New energy automobile aluminum alloy hub thermal state reverse mechanical correction and detection device and method

Abstract

The invention provides a new energy automobile aluminum alloy hub thermal state reverse mechanical correction and detection device and method. According to the thermal-state reverse mechanical correction and detection device, after metal mold low-pressure casting of the aluminum alloy hub is finished, size detection and mechanical correction of the aluminum alloy hub can be synchronously and rapidly achieved, and at the moment, the material yield strength limit of the aluminum alloy hub is low; the thermal state mechanical correction can be carried out on the inner side rim area and the outer side rim area of the aluminum alloy hub with small torsional moment, and the thermal state mechanical correction device has the advantages of being high in response speed and production effect. When the thermal-state reverse mechanical correction rotary rod is adopted to perform thermal-state reverse mechanical correction on the aluminum alloy hub, the inner-side rim laser range finder and the outer-side rim laser range finder are started synchronously, and a proper torsional moment is formed on the thermal-state reverse mechanical correction rotary rod; and full-size thermal state reverse mechanical correction is conducted on the inner side rim area and the outer side rim area of the aluminum alloy hub.

Description

Technical Field

[0001] The present invention belongs to the field of manufacturing technology and technology of new energy vehicle structural parts, and specifically relates to a hot reverse mechanical correction and detection device and a correction and detection method for a new energy vehicle aluminum alloy wheel hub. Background Art

[0002] The wheel is assembled from parts such as the hub, tire, valve or air pressure sensor, and decorative cover. It is mainly composed of the hub and tire. The hub is the hardest supporting part of the wheel. It is a component installed together with the axle, supporting the entire wheel component, and is the most critical and important part of the wheel assembly. As an assembly component, the wheel plays a very important role in the whole vehicle. It not only realizes power conversion through transmission, but also bears the vehicle's own gravity and the safety of the vehicle's weight during the driving process. The wheel needs to withstand a lot of forces, such as the huge torque generated during braking and other comprehensive interactive forces, the positive pressure of the vehicle body itself, the rotational torque of the vehicle starting, and even the irregular forces generated in all directions such as impact and turning during the driving process of the vehicle. As a key component of the vehicle operation, the quality of the wheel directly affects the quality of the vehicle itself. During high-speed driving, the stability, flexibility, impact resistance and durability of the wheel operation will affect the safety, stability, reliability, controllability and comfort of the vehicle driving, and even affect the service life and safety of the vehicle. Therefore, the requirements of automobile OEMs for the production stability and use safety of wheels are increasing.

[0003] As the most popular wheel hub material on the market, aluminum alloy wheels are known for their lightweight properties. They can reduce the total weight of the car, thereby improving the driving distance and handling of new energy vehicles. The excellent thermal conductivity of aluminum alloy materials also helps the heat dissipation of the wheel hub, and the corrosion resistance is significantly improved compared to steel wheels. At present, aluminum alloy wheels are mainly produced by metal mold low-pressure casting process. When using metal mold low-pressure casting to produce aluminum alloy wheels, due to the different structural forms and wall thicknesses of the spoke area and rim area of ​​the aluminum alloy wheel, the solidification temperature gradient will produce large solidification thermal stress during the solidification process, resulting in solidification deformation of the aluminum alloy wheel. The solidification thermal stress accumulated in the solidification stage of the aluminum alloy wheel cannot be effectively released. The superposition of quenching thermal stress in the solid solution quenching stage often causes a large deformation of the aluminum alloy wheel, which directly affects the dynamic balance performance of the aluminum alloy wheel, thereby affecting the handling, stability and safety of new energy vehicles. Summary of the invention

[0004] The inventor of the present application has found through research that the commonly used correction process is to be carried out after the aluminum alloy wheel hub has completed the quality inspection. At this time, the yield strength limit of the aluminum alloy wheel hub has risen to more than 150MPa, and the correction is difficult; and when using conventional correction devices to calibrate the aluminum alloy wheel hub, it is difficult to take into account the full size of the aluminum alloy wheel hub. Often, after the size of some areas is corrected, the size of other areas has undergone a large deformation, and the correction and detection of the aluminum alloy wheel hub cannot be realized synchronously. In order to improve the deficiencies of the prior art, the present invention comprehensively considers the current aluminum alloy wheel hub metal mold low-pressure casting process and the synchronous correction and detection of the aluminum alloy wheel hub, and proposes a hot reverse mechanical correction and detection device and method for the aluminum alloy wheel hub of new energy vehicles. The hot reverse mechanical correction and detection device and method are characterized by simple operation, low manufacturing cost and short production cycle. The hot reverse mechanical correction and detection device and method are used to quickly detect the solidification deformation of the inner rim and the outer rim of the aluminum alloy wheel hub after the aluminum alloy wheel hub completes the low-pressure casting of the metal mold, and to perform hot reverse mechanical correction on the aluminum alloy wheel hub when the yield strength limit of the aluminum alloy wheel hub is low, which significantly improves the dimensional accuracy and surface finish of the aluminum alloy wheel hub, greatly improves and enhances the dynamic balancing performance of the aluminum alloy wheel hub, and obtains a dimensional tolerance of the aluminum alloy wheel hub ≤IT8 level and a surface finish of Ra ≤0.8μm, axial runout of the inner and outer sides of the aluminum alloy wheel ≤0.10mm, unbalanced mass ( Unbalance Mass ) ≤0.8g, dynamic balancing test amplitude ≤8μm, imbalance angle ≤5°, which greatly improves the handling, stability and safety of new energy vehicles.

[0005] The object of the present invention is achieved through the following technical solutions: A hot reverse mechanical correction and detection device for an aluminum alloy wheel hub of a new energy vehicle, the device comprising a metal mold low-pressure casting unit, a mold cavity unit, a transmission unit and a correction and detection unit; the correction and detection unit and the mold cavity unit are arranged above the metal mold low-pressure casting unit; the transmission unit is arranged on one side of the metal mold low-pressure casting unit; the mold cavity unit comprises a left box mold, a rear box mold, a right box mold, a front box mold, a metal core and a top box mold; the left box mold, the rear box mold, the right box mold and the front box mold are located around the metal core, and the top box mold is located at the metal core. The left box mold, the rear box mold, the right box mold, the front box mold, the metal core and the top box mold constitute a casting cavity of the aluminum alloy wheel hub; the correction and detection unit comprises a hot reverse mechanical correction rotating rod, an inner rim laser rangefinder, an aluminum alloy wheel hub and an outer rim laser rangefinder; the hot reverse mechanical correction rotating rod is located at the center of the top box mold and is limited in position with the top box mold; the inner rim laser rangefinder is located on one side of the top box mold and is limited in position with the top box mold; the outer rim laser rangefinder is located on the other side of the top box mold and is limited in position with the top box mold.

[0006] Beneficial effects of the present invention: The present invention provides a hot reverse mechanical correction and detection device and method for an aluminum alloy wheel hub of a new energy vehicle. Compared with the existing correction process and detection method, the hot reverse mechanical correction and detection device of the present invention can synchronously and quickly realize the size detection and mechanical correction of the aluminum alloy wheel hub after the low-pressure casting of the metal mold is completed. At this time, the material yield strength limit of the aluminum alloy wheel hub is relatively low, that is, a relatively small torque moment is required to perform hot mechanical correction on the inner rim and outer rim areas of the aluminum alloy wheel hub, which has the characteristics of fast response speed and fast production effect. At the same time, when the hot reverse mechanical correction rod is used to perform hot reverse mechanical correction on the aluminum alloy wheel hub, the inner rim laser rangefinder and the outer rim laser rangefinder are turned on simultaneously. The inner rim and the outer rim of the aluminum alloy wheel hub are measured by laser and compared with the theoretical calculated value. The advance amount of the hot reverse mechanical correction rod can be obtained by reverse calculation. Combined with the control gear drive motor and the transmission gear speed, a torque moment of appropriate size is formed on the hot reverse mechanical correction rod, and full-size hot reverse mechanical correction is performed on the inner rim and the outer rim area of ​​the aluminum alloy wheel hub.

[0007] Compared with the conventional aluminum alloy wheel correction process, the method described in the present invention can shorten the production cycle by more than 70%, reduce the manufacturing cost by more than 55%, improve the dimensional tolerance of the aluminum alloy wheel by more than one level, and significantly improve the surface quality and dynamic balance performance of the aluminum alloy wheel. The hot reverse mechanical correction and detection device and method of the aluminum alloy wheel of a new energy vehicle described in the present invention can quickly realize the dimensional detection and hot reverse mechanical correction of the aluminum alloy wheel, and has the characteristics of small equipment investment, low manufacturing cost, short production cycle, and strong process applicability. It can be used for the precision forming and manufacturing of aluminum alloy wheels with complex curved surface structures of new energy vehicles in my country, improve the dimensional accuracy, surface finish and dynamic balance performance of aluminum alloy wheels, and significantly improve the controllability, stability and safety of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic structural diagram of a thermal reverse mechanical correction and detection device according to a preferred embodiment of the present invention.

[0009] Figure 2 It is a schematic structural diagram of a thermal reverse mechanical correction and detection device according to a preferred embodiment of the present invention.

[0010] Figure 3 It is a schematic structural diagram of a thermal reverse mechanical correction and detection device according to a preferred embodiment of the present invention.

[0011] Figure 4 It is a schematic structural diagram of a thermal reverse mechanical correction and detection device according to a preferred embodiment of the present invention.

[0012] Figure 5 An isometric view of a thermal reverse mechanical correction and detection device according to a preferred embodiment of the present invention.

[0013] Figure 6 This is an exploded view of a thermal reverse mechanical correction and detection device according to a preferred embodiment of the present invention.

[0014] Figure 7 A cross-sectional view of a thermal reverse mechanical correction and detection device according to a preferred embodiment of the present invention.

[0015] Figure 8 A cross-sectional view of a thermal reverse mechanical correction and detection device according to a preferred embodiment of the present invention.

[0016] Fig. 9 This is a schematic diagram of the working principle of the thermal reverse mechanical correction and detection device described in a preferred embodiment of the present invention.

[0017] Fig.10It is a schematic diagram of the operation of the inner rim and outer rim laser rangefinder according to a preferred embodiment of the present invention.

[0018] Fig.11 Schematic diagram of the working principle of thermal reverse mechanical correction according to a preferred embodiment of the present invention.

[0019] Fig.12 This is a physical schematic diagram of the aluminum alloy wheel hub for new energy vehicles prepared in Example 3.

[0020] Fig.13 This is a physical schematic diagram of the aluminum alloy wheel hub for new energy vehicles prepared in Example 4.

[0021] Fig.14 This is a physical schematic diagram of the aluminum alloy wheel hub for new energy vehicles prepared in Example 5.

[0022] Figure numerals: 1 is a bottom plate; 2 is a gear drive motor support rod; 3 is a gear drive motor; 4 is a gear drive motor speed rod; 5 is a gear; 6 is a bottom plate support column; 7 is a casting platform; 8 is a crucible slot coordination ring; 9 is a crucible; 10 is a riser tube coordination ring; 11 is a transmission gear; 12 is a transmission gear bearing; 13 is a riser tube; 14 is a left box mold displacer; 15 is a left box mold slide rail; 16 is a left box mold; 17 is a rear box mold displacer; 18 is a rear box mold slide rail; 19 is a rear box mold; 20 is a right box mold displacer; 21 is a right box mold slide rail; 22 is a right box mold; 23 is a front box mold displacer; 24 is a front box mold slide rail; 25 is a front box mold; 26 is a metal core; 27 is a top box mold; 28 is a hot 29 is the inner rim laser rangefinder; 30 is the outer rim laser rangefinder; 31 is the aluminum alloy wheel hub; 32 is the support rod; 33 is the support rod positioner; 34 is the support rod connecting frame; 35 is the hot reverse mechanical correction rotating rod connecting rod; 36 is the hot reverse mechanical correction rotating rod connecting rod positioner; 37 is the support rod connecting frame limit column fastening nut; 38 is the support rod connecting frame limit column; 39 is the inner rim laser rangefinder connecting rod limiter; 40 is the inner rim laser rangefinder connecting rod; 41 is the inner hub rim laser rangefinder connecting rod positioner; 42 is the outer rim laser rangefinder connecting rod limiter; 43 is the outer rim laser rangefinder connecting rod; 44 is the outer rim laser rangefinder connecting rod positioner. DETAILED DESCRIPTION

[0023] <Hot reverse mechanical correction and detection device for aluminum alloy wheels of new energy vehicles> As mentioned above, the present invention provides a hot reverse mechanical correction and detection device for an aluminum alloy wheel hub of a new energy vehicle, the hot reverse mechanical correction and detection device comprises a metal mold low-pressure casting unit, a mold cavity unit, a transmission unit and a correction and detection unit; the correction and detection unit and the mold cavity unit are arranged above the metal mold low-pressure casting unit; the transmission unit is arranged on one side of the metal mold low-pressure casting unit; The mold cavity unit includes a left box mold 16, a rear box mold 19, a right box mold 22, a front box mold 25, a metal core 26 and a top box mold 27; the left box mold 16, the rear box mold 19, the right box mold 22 and the front box mold 25 are located around the metal core 26, and the top box mold 27 is located directly above the metal core 26. The left box mold 16, the rear box mold 19, the right box mold 22, the front box mold 25, the metal core 26 and the top box mold 27 constitute a casting cavity of the aluminum alloy wheel hub 31; The correction and detection unit includes a hot reverse mechanical correction rotary rod 28, an inner rim laser rangefinder 29, an aluminum alloy wheel hub 31 and an outer rim laser rangefinder 30; The hot reverse mechanical correction rotary rod 28 is located at the center of the top box mold 27 and is limited in position with the top box mold 27; the inner rim laser rangefinder 29 is located on one side of the top box mold 27 and is limited in position with the top box mold 27; the outer rim laser rangefinder 30 is located on the other side of the top box mold 27 and is limited in position with the top box mold 27.

[0024] <Transmission unit> According to an embodiment of the present invention, the transmission unit is disposed on one side of the metal mold low-pressure casting unit, and the transmission unit is used to drive the aluminum alloy wheel hub 31 to rotate to achieve hot reverse mechanical correction and detection of the aluminum alloy wheel hub.

[0025] According to an embodiment of the present invention, the transmission unit includes a gear-driven motor support rod 2, a gear-driven motor 3, a gear-driven motor speed rod 4 and a gear 5; the gear-driven motor support rod 2 is connected to the gear-driven motor speed rod 4 through the gear-driven motor 3, and the gear-driven motor speed rod 4 is connected to the gear 5.

[0026] According to an embodiment of the present invention, the gear 5 is connected to the metal mold low-pressure casting unit; preferably, the gear 5 is gear-engaged with the transmission gear 11 in the metal mold low-pressure casting unit.

[0027] According to an embodiment of the present invention, the gear drive motor 3 drives the gear 5 to rotate through the gear drive motor speed rod 4, the gear 5 drives the transmission gear 11 in the metal mold low-pressure casting unit to rotate, and the transmission gear 11 drives the aluminum alloy wheel hub 31 to rotate.

[0028] According to an embodiment of the present invention, the centers of the gear-driven motor support rod 2, the gear-driven motor 3, the gear-driven motor speed rod 4 and the gear 5 are collinear.

[0029] According to the embodiment of the present invention, the gear-driven motor support rod 2 is made of stainless steel, with a diameter of ≥20 mm and a height of ≥300 mm.

[0030] According to the embodiment of the present invention, the working mode of the gear drive motor 3 is stepping, the step angle is 1.2°-1.5°, the torque is 2000N·m-4000N·m, and the moment of inertia is 800Kg·m 2 -2400Kg·m 2 , rated power is 450kW-800 kW.

[0031] According to the embodiment of the present invention, the gear drive motor speed rod 4 is made of alloy steel and has a speed of 1200 r·min. -1 -2000r·min -1 .

[0032] According to an embodiment of the present invention, the gear 5 is made of carburized steel, has a module of 25-40, a number of teeth of 24-32, a pressure angle of 18°-22°, and a tooth width of 0.2-0.4.

[0033] <Metal mold low pressure casting unit> According to an embodiment of the present invention, the metal mold low-pressure casting unit is used to provide alloy liquid to the mold cavity unit to complete the metal mold low-pressure casting of the aluminum alloy wheel hub 31 .

[0034] According to an embodiment of the present invention, the metal mold low-pressure casting unit includes a casting platform 7, a crucible slot coordination ring 8, a crucible 9, a riser tube coordination ring 10, a transmission gear 11, a transmission gear bearing 12 and a riser tube 13; the crucible slot coordination ring 8 is limitedly matched with the central circular hole of the casting platform 7; the crucible 9 is limitedly matched with the crucible slot coordination ring 8; the transmission gear 11 is located directly above the crucible 9; the riser tube coordination ring 10 is located below the transmission gear 11 and is connected to the transmission gear 11; the transmission gear bearing 12 is located at the center of the transmission gear 11 and is limitedly matched by the riser tube coordination ring 10; the riser tube 13 passes through the transmission gear bearing 12 and the riser tube coordination ring 10, and is positioned by the riser tube coordination ring 10.

[0035] According to an embodiment of the present invention, the transmission gear 11 is gear-engaged with the gear 5 in the transmission unit.

[0036] According to an embodiment of the present invention, the bottom end of the riser tube 13 is located inside the crucible 9, and the top end of the riser tube 13 is located above the transmission gear 11. Exemplarily, the distance between the bottom end of the riser tube 13 and the bottom of the crucible 9 is 200mm-240mm.

[0037] According to an embodiment of the present invention, the centers of the riser tube 13, the transmission gear bearing 12, the transmission gear 11, the riser tube coordination ring 10 and the crucible 9 are colinear.

[0038] According to the implementation scheme of the present invention, the limiting cooperation between the crucible slot coordination ring 8 and the central circular hole of the casting platform 7 means that the central circular hole of the casting platform 7 limits the position of the crucible slot coordination ring 8 to prevent the crucible slot coordination ring 8 from exceeding the limiting area; the limiting cooperation method is clearance cooperation, and the clearance amount is 0.5mm-1.0mm.

[0039] According to the embodiment of the present invention, the limiting cooperation between the crucible 9 and the crucible slot coordination ring 8 means that the crucible slot coordination ring 8 limits the position of the crucible 9 to prevent the crucible 9 from exceeding the limiting area; the limiting cooperation method is clearance cooperation, and the clearance amount is 0.5mm-1.0mm.

[0040] According to the implementation scheme of the present invention, the transmission gear bearing 12 is limited by the riser tube matching ring 10, which means that the riser tube matching ring 10 limits the position of the transmission gear bearing 12 to prevent the transmission gear bearing 12 from exceeding the limit area; the limit matching method is clearance matching, and the matching clearance amount is 0.5mm-1.0mm.

[0041] According to an embodiment of the present invention, the top surface of the crucible 9 is coplanar with the horizontal plane of the casting platform 7 .

[0042] According to an embodiment of the present invention, the riser pipe coordination ring 10 is connected to the transmission gear 11 via a nut.

[0043] According to an embodiment of the present invention, the casting platform 7 is made of low-carbon steel; the casting platform 7 has a length ≥1800 mm, a width ≥1500 mm, and a thickness ≥30 mm.

[0044] According to an embodiment of the present invention, the casting platform 7 has a slot on each side in the length direction, preferably a "U"-shaped slot; the casting platform 7 has a slot on each side in the width direction, preferably a "U"-shaped slot.

[0045] According to an embodiment of the present invention, the width of the "U"-shaped slot is ≥50 mm, the depth of the "U"-shaped slot is ≥40 mm, and the length of the "U"-shaped slot is 40-80 mm.

[0046] According to an embodiment of the present invention, the material of the crucible slot coordination ring 8 is low-carbon steel; the shape of the crucible slot coordination ring 8 is annular.

[0047] According to an embodiment of the present invention, the crucible 9 is made of graphite or stainless steel, and has a capacity of 500L-750L.

[0048] According to an embodiment of the present invention, the riser tube coordination ring 10 is made of stainless steel.

[0049] According to an embodiment of the present invention, the transmission gear 11 is made of carburized steel, has a module of 75-100, a number of teeth of 80-120, a pressure angle of 20°-25°, and a tooth width of 0.3-0.5.

[0050] According to an embodiment of the present invention, the transmission gear bearing 12 is made of high carbon chromium steel.

[0051] According to the embodiment of the present invention, the inner diameter of the transmission gear bearing 12 is 120mm-140mm, the outer diameter is 180mm-200mm, the width is 20mm-24mm, the dynamic load is 4000N-4500N, the static load is 1200N-1500N, and the limit speed is 6000r·min -1 -6500r·min -1 .

[0052] According to an embodiment of the present invention, the metal mold low-pressure casting unit further includes a bottom plate 1 and a bottom plate support column 6 ; the bottom plate 1 is located below the casting platform 7 , and the bottom plate 1 is connected to the casting platform 7 via the bottom plate support column 6 .

[0053] According to an embodiment of the present invention, the bottom plate 1 is located below the casting platform 7 , and the top surface of the bottom plate 1 is connected to the bottom surface of the casting platform 7 through the bottom plate support column 6 .

[0054] According to an embodiment of the present invention, the base plate support column 6 is connected to the base plate 1 through nuts.

[0055] According to the embodiment of the present invention, the base plate 1 is made of carbon steel, with a length ≥ 2000 mm, a width ≥ 1600 mm, and a thickness ≥ 40 mm.

[0056] According to an implementation scheme of the present invention, the material of the bottom plate support column 6 is alloy steel, and the number is 4; the cross-section of the bottom plate support column 6 is a square, such as a square with a side length ≥ 60 mm; the height of the bottom plate support column 6 is ≥ 800 mm; the bottom plate support columns 6 are symmetrically distributed along the length direction of the bottom plate 1, such as the number of the bottom plate support columns 6 is 4, distributed at the four corners of the bottom plate 1, and symmetrically distributed along the length direction of the bottom plate 1.

[0057] <Mold Cavity Unit> According to an embodiment of the present invention, the mold cavity unit is disposed above the metal mold low-pressure casting unit, and the metal mold low-pressure casting unit and the mold cavity unit jointly complete the metal mold low-pressure casting of the aluminum alloy wheel hub 31 .

[0058] According to an embodiment of the present invention, the left box mold 16 , the right box mold 22 , the rear box mold 19 , and the front box mold 25 are distributed along the circumference of the metal core 26 , and together with the top box mold 27 form a casting cavity for the aluminum alloy wheel hub 31 .

[0059] According to an embodiment of the present invention, the two sides of the left box mold 16 are in contact with the rear box mold 19 and the front box mold 25 respectively, the two sides of the rear box mold 19 are in contact with the left box mold 16 and the right box mold 22 respectively, the two sides of the right box mold 22 are in contact with the rear box mold 19 and the front box mold 25 respectively, and the two sides of the front box mold 25 are in contact with the left box mold 16 and the right box mold 22 respectively.

[0060] According to an embodiment of the present invention, the left box mold 16 is located on the left side of the metal core 26, the right box mold 22 is located on the right side of the metal core 26, the rear box mold 19 is located on the rear side of the metal core 26, and the front box mold 25 is located on the front side of the metal core 26. The left box mold 16, the right box mold 22, the rear box mold 19, the front box mold 25, the metal core 26 and the top box mold 27 together constitute the casting cavity of the aluminum alloy wheel hub 31.

[0061] According to an embodiment of the present invention, the left box mold 16 is located on the left side of the casting cavity of the aluminum alloy wheel hub 31, the right box mold 22 is located on the right side of the casting cavity of the aluminum alloy wheel hub 31, the rear box mold 19 is located on the rear side of the casting cavity of the aluminum alloy wheel hub 31, the front box mold 25 is located on the front side of the casting cavity of the aluminum alloy wheel hub 31, and the metal core 26 is located inside the casting cavity of the aluminum alloy wheel hub 31.

[0062] According to an embodiment of the present invention, the metal core 26 is located directly above the transmission gear 11 of the metal mold low-pressure casting unit, and the metal core 26 and the center of the transmission gear 11 are colinear.

[0063] According to an embodiment of the present invention, the metal core 26 is made of hot working die steel.

[0064] According to an embodiment of the present invention, the top box mold 27 is made of hot working die steel, is cylindrical, has a thickness of ≥40 mm, and a diameter of ≥400 mm.

[0065] According to an embodiment of the present invention, the left box mold 16, the right box mold 22, the rear box mold 19, and the front box mold 25 are located on the casting platform 7 of the metal mold low-pressure casting unit.

[0066] According to an embodiment of the present invention, the mold cavity unit further comprises a left box mold displacer 14, a left box mold slide 15, a rear box mold displacer 17, a rear box mold slide 18, a right box mold displacer 20, a right box mold slide 21, a front box mold displacer 23 and a front box mold slide 24; The left box mold displacer 14 is connected to the left box mold 16 through the left box mold slide rail 15, the right box mold displacer 20 is connected to the right box mold 22 through the right box mold slide rail 21, the rear box mold displacer 17 is connected to the rear box mold 19 through the rear box mold slide rail 18, and the front box mold displacer 23 is connected to the front box mold 25 through the front box mold slide rail 24.

[0067] According to an embodiment of the present invention, the rear box mold displacer 17 is connected to the rear box mold slide rail 18 through a nut, the front box mold displacer 23 is connected to the front box mold slide rail 24 through a nut, the right box mold displacer 20 is connected to the right box mold slide rail 21 through a nut, and the left box mold displacer 14 is connected to the left box mold slide rail 15 through a nut.

[0068] According to an embodiment of the present invention, the left box mold displacer 14 can drive the left box mold 16 to move inward or outward along the center direction of the metal core 26 through the left box mold slide rail 15, and the left box mold displacer 14 can move a distance of 40mm-80mm, that is, the left box mold displacer 14 slides a distance of 40mm-80mm in the slot on the casting platform 7.

[0069] According to an embodiment of the present invention, the right box mold displacer 20 can drive the right box mold 22 to move inward or outward along the center direction of the metal core 26 through the right box mold slide rail 21, and the right box mold displacer 20 can move a distance of 40mm-80mm, that is, the right box mold displacer 20 slides a distance of 40mm-80mm in the slot on the casting platform 7.

[0070] According to an embodiment of the present invention, the front box mold displacer 23 can drive the front box mold 25 to move inward or outward along the center direction of the metal core 26 through the front box mold slide rail 24, and the front box mold displacer 23 can move a distance of 40mm-80mm, that is, the front box mold displacer 23 slides a distance of 40mm-80mm in the slot on the casting platform 7.

[0071] According to an embodiment of the present invention, the rear box mold displacer 17 can drive the rear box mold 19 to move inward or outward along the center direction of the metal core 26 through the rear box mold slide rail 18, and the rear box mold displacer 17 can move a distance of 40mm-80mm, that is, the rear box mold displacer 17 slides in the slot on the casting platform 7 A distance of 40mm-80mm.

[0072] According to an embodiment of the present invention, the rear box mold displacer 17, the front box mold displacer 23, the right box mold displacer 20 and the left box mold displacer 14 are located on the casting platform 7 of the metal mold low pressure casting unit.

[0073] According to an implementation scheme of the present invention, the left box mold displacer 14 is located in the slot on the left side of the casting platform 7 of the metal mold low-pressure casting unit in the width direction, and is matched with the slot gap, the gap amount is 0.4mm-1.2mm, and the lubricant is a solid lubricant; the left box mold slide rail 15 is a retractable slide rail; the telescopic moving distance of the left box mold slide rail 15 along the length direction of the casting platform 7 is 60mm-320mm; the number of the left box mold slide rails 15 is 2, the material is low carbon steel, and the length is 320mm-500mm; the material of the left box mold 16 is hot working die steel, and the thickness of the left box mold 16 is ≥20mm.

[0074] According to an embodiment of the present invention, the right box mold displacer 20 is located in the slot on the right side of the casting platform 7 of the metal mold low-pressure casting unit in the width direction, and is matched with the slot gap, the gap amount is 0.4mm-1.2mm, and the lubricant is a solid lubricant; the right box mold slide rail 21 is a retractable slide rail; the telescopic moving distance of the right box mold slide rail 21 along the length direction of the casting platform 7 is 60mm-320mm; the number of the right box mold slide rails 21 is 2, the material is low carbon steel, and the length is 320mm-500mm; the material of the right box mold 22 is hot working die steel, and the thickness of the right box mold 22 is ≥20mm.

[0075] According to an implementation scheme of the present invention, the rear box mold displacer 17 is located in a slot on the rear side of the casting platform 7 of the metal mold low-pressure casting unit in the length direction, and is matched with the slot gap, the gap amount is 0.3mm-0.9mm, and the lubricant is a solid lubricant; the rear box mold slide rail 18 is a retractable slide rail; the telescopic moving distance of the rear box mold slide rail 18 along the width direction of the casting platform 7 is 60mm-320mm; the number of the rear box mold slide rails 18 is 2, the material is low carbon steel, and the length is 350mm-450mm; the material of the rear box mold 19 is hot working die steel, and the thickness of the rear box mold 19 is ≥25mm.

[0076] According to an embodiment of the present invention, the front box mold displacer 23 is located in the slot on the front side of the casting platform 7 of the metal mold low-pressure casting unit in the length direction, and is matched with the slot gap, the gap amount is 0.3mm-0.9mm, and the lubricant is a solid lubricant; the front box mold slide rail 24 is a retractable slide rail; the retractable moving distance of the front box mold slide rail 24 along the width direction of the casting platform 7 is 60mm-320mm; the number of the front box mold slide rails 24 is 2, the material is low carbon steel, and the length is 350mm-450mm; the material of the front box mold 25 is hot working die steel, and the thickness of the front box mold 25 is ≥25mm.

[0077] According to an embodiment of the present invention, the solid lubricant includes the following components in mass fraction: graphite powder 32%-34% (mass fraction, the same below), with a particle size of 25μm-60μm; polytetrafluoroethylene PTFE powder 25%-27%, with a particle size of 1.5μm-4.5μm; mullite powder 22%-24%, with a particle size of 80 mesh-120 mesh; epoxy resin powder 8%-10%, with a particle size of 15μm-45μm; the remainder is ethanol, with a chemical purity of ≥95%.

[0078] <Calibration and testing unit> According to an embodiment of the present invention, the calibration and detection unit is disposed above the metal mold low-pressure casting unit, and the calibration and detection unit is used for calibrating and detecting the aluminum alloy wheel hub 31 .

[0079] According to an embodiment of the present invention, the hot reverse mechanical correction rotary rod 28 is located at the center of the top box mold 27 and is limitedly matched with the top box mold 27, which means that the top box mold 27 limits the position of the hot reverse mechanical correction rotary rod 28 to prevent the hot reverse mechanical correction rotary rod 28 from exceeding the limit area; the limit matching method is clearance matching, and the matching clearance amount is 0.6mm-1.2mm.

[0080] According to an embodiment of the present invention, the top end of the hot reverse mechanical correction rotary rod 28 is located inside the top box mold 27 and is limitedly matched with the top box mold 27; the limiting matching method is clearance matching, and the matching clearance amount is 0.6mm-1.2mm; the bottom end of the hot reverse mechanical correction rotary rod 28 is located below the top box mold 27.

[0081] According to an embodiment of the present invention, the correction and detection unit also includes a hot reverse mechanical correction rotary rod connecting rod 35 and a hot reverse mechanical correction rotary rod connecting rod positioner 36; the top end of the hot reverse mechanical correction rotary rod 28 is connected to the hot reverse mechanical correction rotary rod connecting rod positioner 36 via the hot reverse mechanical correction rotary rod connecting rod 35.

[0082] According to an embodiment of the present invention, the center points of the hot reverse mechanical correction rotary rod connecting rod 35 and the hot reverse mechanical correction rotary rod connecting rod positioner 36 are collinear.

[0083] According to an embodiment of the present invention, the material of the hot reverse mechanical correction rotating rod connecting rod 35 is carburized steel. The diameter of the hot reverse mechanical correction rotating rod connecting rod 35 is ≥40 mm.

[0084] According to an embodiment of the present invention, the hot reverse mechanical correction rotary rod connecting rod positioner 36 is used to adjust the distance between the hot reverse mechanical correction rotary rod 28 and the top box mold 27.

[0085] According to an embodiment of the present invention, the hot reverse mechanical correction rotating rod 28 is made of high-strength alloy steel.

[0086] According to an embodiment of the present invention, the shape of the hot reverse mechanical correction rotating rod 28 is an "L" shape, the short side of the "L" shape is connected to the bottom end of the hot reverse mechanical correction rotating rod connecting rod 35, and the long side of the "L" shape is a correction side with a correction end. The length of the long side of the "L" shape is greater than the outer diameter of the aluminum alloy wheel hub 31.

[0087] According to an embodiment of the present invention, the correction end is in a concave shape, the end of the concave shape is hemispherical, and the radius is 5mm-10mm. The width of the concave groove is greater than the thickness of the rim of the aluminum alloy wheel hub 31.

[0088] According to the embodiment of the present invention, the hot reverse mechanical correction rotary rod 28 is used to apply an inward or outward torque along the center direction to the aluminum alloy wheel hub 31 to achieve hot reverse mechanical correction of the aluminum alloy wheel hub 31 .

[0089] According to the implementation scheme of the present invention, the inner rim laser rangefinder 29 is located on one side of the top box mold 27 and is limitedly matched with the top box mold 27, which means that the top box mold 27 limits the position of the inner rim laser rangefinder 29 to prevent the inner rim laser rangefinder 29 from exceeding the limit area; the limit matching method is clearance matching, and the matching clearance amount is 0.8mm-1.2mm.

[0090] According to an embodiment of the present invention, the top end of the inner rim laser rangefinder 29 is located inside the top box mold 27 and is limitedly matched with the top box mold 27; the limited matching method is clearance matching, and the matching clearance amount is 0.8mm-1.2mm; the bottom end of the inner rim laser rangefinder 29 is located below the top box mold 27.

[0091] According to the embodiment of the present invention, the inner rim laser rangefinder 29 is used to measure the distance of the inner rim of the aluminum alloy wheel hub 31 .

[0092] According to an embodiment of the present invention, the calibration and detection unit further comprises an inner rim laser rangefinder connecting rod stopper 39, an inner rim laser rangefinder connecting rod 40 and an inner rim laser rangefinder connecting rod positioner 41; The top end of the inner wheel rim laser rangefinder 29 is connected to the bottom end of the inner wheel rim laser rangefinder connecting rod 40, and the top end of the inner wheel rim laser rangefinder connecting rod 40 is connected to the inner wheel rim laser rangefinder connecting rod positioner 41 through the inner wheel rim laser rangefinder connecting rod limiter 39.

[0093] According to an embodiment of the present invention, the center points of the inner rim laser rangefinder connecting rod stopper 39, the inner rim laser rangefinder connecting rod 40 and the inner rim laser rangefinder connecting rod positioner 41 are collinear.

[0094] According to an embodiment of the present invention, the inner rim laser rangefinder connecting rod stopper 39 is in an "inverted U" shape.

[0095] According to an embodiment of the present invention, the inner rim laser rangefinder connecting rod limiter 39 is made of carbon steel.

[0096] According to an embodiment of the present invention, the inner rim laser rangefinder connecting rod positioner 41 is located directly above the inner rim laser rangefinder connecting rod 40, and is used to adjust the distance between the inner rim laser rangefinder 29 and the top box mold 27 or the distance between the inner rim laser rangefinder 29 and the aluminum alloy wheel hub 31, such as the distance between the inner rim laser rangefinder 29 and the inner hub of the aluminum alloy wheel hub 31.

[0097] According to the embodiment of the present invention, the resolution of the inner wheel rim laser rangefinder 29 is 0.5mm-1.0mm, the measuring distance is 1m-500m, the measuring accuracy is ±1.0mm~±0.5mm, the laser is visible red light, the wavelength of visible red light is 615nm-680nm, the safety level is Class 3R, the environmental protection level is IP 67, and the data storage frequency is 0.02s-0.1s. The measuring distance refers to the sum of the distances that the inner wheel rim laser rangefinder 29 can measure; illustratively, when the aluminum alloy wheel hub rotates, the measuring distance through the inner wheel rim laser rangefinder 29 is N times the circumference of the inner wheel rim of the aluminum alloy wheel hub, and N is the number of revolutions of the aluminum alloy wheel hub.

[0098] According to the implementation scheme of the present invention, the outer wheel rim laser rangefinder 30 is located on one side of the top box mold 27 and is limitedly matched with the top box mold 27, which means that the top box mold 27 limits the position of the inner wheel rim laser rangefinder 29 to prevent the outer wheel rim laser rangefinder 30 from exceeding the limit area; the limit matching method is clearance matching, and the matching clearance amount is 0.8mm-1.2mm.

[0099] According to an embodiment of the present invention, the top end of the outer rim laser rangefinder 30 is located inside the top box mold 27 and is limitedly matched with the top box mold 27; the limited matching method is clearance matching, and the matching clearance amount is 0.8mm-1.2mm; the bottom end of the outer rim laser rangefinder 30 is located below the top box mold 27.

[0100] According to the embodiment of the present invention, the outer rim laser distance meter 30 is used to measure the distance of the outer rim of the aluminum alloy wheel hub 31 .

[0101] According to an embodiment of the present invention, the calibration and detection unit further comprises an outer wheel rim laser rangefinder connecting rod stopper 42, an outer wheel rim laser rangefinder connecting rod 43 and an outer wheel rim laser rangefinder connecting rod positioner 44; The top end of the outer wheel rim laser rangefinder 30 is connected to the bottom end of the outer wheel rim laser rangefinder connecting rod 43 , and the top end of the outer wheel rim laser rangefinder connecting rod 43 is connected to the outer wheel rim laser rangefinder connecting rod positioner 44 through the outer wheel rim laser rangefinder connecting rod stopper 42 .

[0102] According to an embodiment of the present invention, the center points of the outer wheel rim laser rangefinder connecting rod stopper 42, the outer wheel rim laser rangefinder connecting rod 43 and the outer wheel rim laser rangefinder connecting rod positioner 44 are collinear.

[0103] According to an embodiment of the present invention, the outer rim laser rangefinder connecting rod stopper 42 is in an "inverted U" shape.

[0104] According to an embodiment of the present invention, the outer rim laser rangefinder connecting rod stopper 42 is made of carbon steel.

[0105] According to an embodiment of the present invention, the outer rim laser rangefinder connecting rod positioner 44 is located directly above the outer rim laser rangefinder connecting rod 43, and is used to adjust the distance between the outer rim laser rangefinder 30 and the bottom end of the top box mold 27 or the distance between the outer rim laser rangefinder 30 and the aluminum alloy wheel hub 31, such as the distance between the outer rim laser rangefinder 30 and the outer wheel hub of the aluminum alloy wheel hub 31.

[0106] According to the embodiment of the present invention, the resolution of the outer wheel rim laser rangefinder 30 is 0.5mm-1.0mm, the measuring distance is 1m-500m, the measuring accuracy is ±1.0mm~±0.5mm, the laser is visible red light, the wavelength of visible red light is 615nm-680nm, the safety level is Class 3R, the environmental protection level is IP 67, and the data storage frequency is 0.02s-0.1s. The measuring distance refers to the sum of the distances that the outer wheel rim laser rangefinder 30 can measure; illustratively, when the aluminum alloy wheel hub rotates, the measuring distance through the outer wheel rim laser rangefinder 30 is N times the circumference of the outer wheel rim of the aluminum alloy wheel hub, and N is the number of revolutions of the aluminum alloy wheel hub.

[0107] According to an embodiment of the present invention, the hot reverse mechanical correction and detection unit also includes a support rod 32, a support rod positioner 33 and a support rod connecting frame 34; the support rod connecting frame 34 is located between the hot reverse mechanical correction rotary rod connecting rod 35 and the hot reverse mechanical correction rotary rod connecting rod positioner 36; the bottom of the support rod 32 is connected to the casting platform 7 in the metal mold low-pressure casting unit, and the top of the support rod 32 is connected to the support rod connecting frame 34; the support rod positioner 33 is arranged on the support rod 32.

[0108] According to an embodiment of the present invention, the center points of the support rod connecting frame 34, the hot reverse mechanical correction rotating rod connecting rod 35 and the hot reverse mechanical correction rotating rod connecting rod positioner 36 are collinear.

[0109] According to an embodiment of the present invention, the support rod connecting frame 34 is located directly above the hot reverse mechanical correction rotary rod connecting rod 35, the hot reverse mechanical correction rotary rod connecting rod positioner 36 is located directly above the support rod connecting frame 34, and the lower end of the support rod connecting frame 34 is connected to the hot reverse mechanical correction rotary rod connecting rod 35, and the upper end of the support rod connecting frame 34 is connected to the hot reverse mechanical correction rotary rod connecting rod positioner 36.

[0110] According to an embodiment of the present invention, the bottom of the support rod 32 is connected to the top surface of the casting platform 7. The support rod 32 is connected to the support rod connecting frame 34 through a nut.

[0111] According to an embodiment of the present invention, the number of the support rods 32 is 4, and they are symmetrically distributed along the length direction of the casting platform 7, such as the support rods 32 are distributed at the four corners of the casting platform 7, and the support rods 32 are symmetrically distributed along the length direction of the casting platform 7. The material of the support rods 32 is alloy steel. The cross-section of the support rods 32 is a square, such as a square with a side length of ≥80 mm; the height of the support rods 32 is ≥1000 mm.

[0112] According to an embodiment of the present invention, the support rod connecting frame 34 is in an "X" shape. The support rod connecting frame 34 is made of carbon steel. The thickness of the support rod connecting frame 34 is ≥50 mm.

[0113] According to an embodiment of the present invention, the support rod position adjuster 33 is arranged at a middle position along the height direction of the support rod 32. The number of the support rod position adjusters 33 is four.

[0114] According to an embodiment of the present invention, the support rod positioner 33 is used to adjust the position of the top box mold 27, for example, to adjust the distance between the top box mold 27 and the casting platform 7 or to adjust the distance between the top box mold 27 and the metal core 26.

[0115] According to an embodiment of the present invention, the correction and detection unit also includes a support rod connecting frame limit column fastening nut 37 and a support rod connecting frame limit column 38; the bottom end of the support rod connecting frame limit column 38 is connected to the top box mold 27 in the mold cavity unit through the support rod connecting frame limit column fastening nut 37; the top end of the support rod connecting frame limit column 38 is connected to the support rod connecting frame 34.

[0116] According to an embodiment of the present invention, the material of the support rod connecting frame limit column fastening nut 37 is threaded steel.

[0117] According to an embodiment of the present invention, the support rod connection frame limit column 38 is made of carbon steel. The number of the support rod connection frame limit column 38 is 4. The diameter of the support rod connection frame limit column 38 is ≥35mm, and the height is ≥300mm. The support rod connection frame limit column 38 is located at the midpoint of each beam of the "X"-shaped support rod connection frame 34.

[0118] According to an embodiment of the present invention, the support rod connecting frame limiting column 38 is used to provide structural support to the support rod connecting frame 34 on the top box mold 27.

[0119] <Hot reverse mechanical correction and detection method for aluminum alloy wheels for new energy vehicles> The present invention also provides a method for hot reverse mechanical correction and detection of aluminum alloy wheel hubs for new energy vehicles. The method is based on the above-mentioned hot reverse mechanical correction and detection device for aluminum alloy wheel hubs for new energy vehicles. The method comprises the following steps: (i) injecting aluminum alloy melt into a casting cavity of an aluminum alloy wheel hub 31 composed of a left box mold 16, a right box mold 22, a front box mold 25, a rear box mold 19, a metal core 26 and a top box mold 27 to prepare an aluminum alloy wheel hub 31; (ii) After the low-pressure casting of the aluminum alloy wheel hub 31 is completed, the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 are pushed outward along the center direction of the metal mold core 26; and the top box mold 27 is pushed upward along the vertical direction; (iii) adjusting the inner wheel rim laser distance meter 29 to the edge position of the inner wheel rim of the aluminum alloy wheel hub 31, and adjusting the outer wheel rim laser distance meter 30 to the edge position of the outer wheel rim of the aluminum alloy wheel hub 31; Turn on the transmission unit to drive the aluminum alloy wheel hub 31 to rotate; The inner wheel rim laser rangefinder 29 is turned on to perform laser distance measurement on the inner wheel rim of the aluminum alloy wheel hub 31, and the outer wheel rim laser rangefinder 30 is turned on to perform laser distance measurement on the outer wheel rim of the aluminum alloy wheel hub 31. According to the laser distance measurement result, the hot reverse mechanical correction rod 28 is used to apply an inward or outward torque along the center direction to the rotating aluminum alloy wheel hub 31, so as to realize hot reverse mechanical correction and detection of the aluminum alloy wheel hub 31.

[0120] According to an embodiment of the present invention, in step (i), the preheating temperatures of the left box mold 16, the right box mold 22, the front box mold 25, and the rear box mold 19 are respectively 280°C-320°C; the preheating temperatures of the metal core 26 and the top box mold 27 are respectively 200°C-240°C.

[0121] According to an embodiment of the present invention, in step (i), the low-pressure casting temperature of the aluminum alloy melt is 685°C-715°C, the liquid rising pressure of the aluminum alloy melt is 40kPa-55kPa, the liquid rising pressure is 5kPa-15kPa, and the liquid rising speed is 6kPa·s -1 -12kPa -1 , the holding time is 180s-300s.

[0122] According to an embodiment of the present invention, in step (i), the casting cavity of the aluminum alloy wheel hub 31 is prepared by the following method: Start the left box mold displacer 14, the right box mold displacer 20, the front box mold displacer 23 and the rear box mold displacer 17 to push the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 to move toward the center of the metal core 26; Start the support rod positioner 33 to push the top box mold 27 to move downward in the vertical direction; The left box mold 16 , the right box mold 22 , the front box mold 25 , the rear box mold 19 , the metal core 26 and the top box mold 27 constitute a casting cavity of the aluminum alloy wheel hub 31 .

[0123] According to an embodiment of the present invention, in step (i), before injecting the aluminum alloy melt into the casting cavity of the aluminum alloy wheel hub 31, the left box mold 16, the right box mold 22, the front box mold 25, the rear box mold 19, the metal core 26 and the top box mold 27 are preheated, so that the preheating temperatures of the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 are 280°C-320°C respectively; the preheating temperatures of the metal core 26 and the top box mold 27 are 200°C-240°C respectively.

[0124] According to an embodiment of the present invention, in step (i), the aluminum alloy melt is injected into the casting cavity of the aluminum alloy wheel hub 31 by the following method: The crucible 9 is filled with aluminum alloy melt, and the low-pressure casting machine is turned on. The aluminum alloy melt in the crucible 9 flows through the riser pipe 13 under pressure and is injected into the casting cavity of the aluminum alloy wheel hub 31 to complete the metal mold low-pressure casting of the aluminum alloy wheel hub 31.

[0125] According to an embodiment of the present invention, step (ii) specifically comprises the following steps: Start the left box mold displacer 14, the right box mold displacer 20, the front box mold displacer 23 and the rear box mold displacer 17 to push the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 to move outward along the center direction of the metal core 26; The support rod positioner 33 is started to push the top box mold 27 to move upward in the vertical direction.

[0126] According to the implementation scheme of the present invention, in step (ii), the left box mold 16 is pushed to move outward 40mm-80mm along the center direction of the metal core 26; the right box mold 22 is pushed to move outward 40mm-80mm along the center direction of the metal core 26; the front box mold 25 is pushed to move outward 40mm-80mm along the center direction of the metal core 26; and the rear box mold 19 is pushed to move outward 40mm-80mm along the center direction of the metal core 26.

[0127] According to an embodiment of the present invention, in step (ii), the top box mold 27 is pushed to move upward in the vertical direction so that the distance between the top box mold 27 and the metal core 26 is 120 mm-150 mm.

[0128] According to the embodiment of the present invention, in step (iii), the inner wheel rim laser distance meter connecting rod positioner 41 is started to adjust the inner wheel rim laser distance meter 29 to the edge position of the inner wheel rim of the aluminum alloy hub 31 .

[0129] Preferably, the inner rim laser distance meter 29 is adjusted to a height distance between the inner rim laser distance meter 29 and the edge of the inner rim of the aluminum alloy wheel hub 31 of 15 mm to 35 mm.

[0130] According to the embodiment of the present invention, in step (iii), the outer wheel rim laser distance meter connecting rod positioner 44 is started to adjust the outer wheel rim laser distance meter 30 to the outer wheel rim edge position of the aluminum alloy wheel hub 31 .

[0131] Preferably, the outer rim laser distance meter 30 is adjusted to a height distance between the outer rim laser distance meter 30 and the edge of the outer rim of the aluminum alloy wheel hub 31 of 15 mm to 35 mm.

[0132] According to the embodiment of the present invention, in step (iii), the gear drive motor 3 in the transmission unit is turned on, and the gear 5 is driven to rotate by the gear drive motor speed rod 4, the gear 5 drives the transmission gear 11 to rotate, and the transmission gear 11 drives the aluminum alloy wheel hub 31 to rotate.

[0133] According to an embodiment of the present invention, step (iii) specifically comprises the following steps: The inner wheel rim laser distance meter 29 is adjusted to the edge position of the inner wheel rim of the aluminum alloy wheel hub 31, and the outer wheel rim laser distance meter 30 is adjusted to the edge position of the outer wheel rim of the aluminum alloy wheel hub 31; Turn on the transmission unit to drive the aluminum alloy wheel hub 31 to rotate at a low speed; The inner wheel rim laser rangefinder 29 is turned on to perform laser distance measurement on the inner wheel rim of the aluminum alloy wheel hub 31, and the outer wheel rim laser rangefinder 30 is turned on to perform laser distance measurement on the outer wheel rim of the aluminum alloy wheel hub 31; The laser distance measurement results and theoretical values ​​of the inner wheel rim laser distance meter 29 and the outer wheel rim laser distance meter 30 are calculated according to Formula 1: Formula 1 in, L It is the circumference of the inner rim or outer rim of the aluminum alloy wheel hub; ω is the rotation speed of the aluminum alloy wheel; The laser distance measurement results of the inner wheel rim laser distance meter 29 and the outer wheel rim laser distance meter 30 are compared with the theoretical values: If υ1<υ1', and υ2>υ2', it indicates that the aluminum alloy wheel hub 31 is deformed inward, and the transmission unit is turned on to drive the aluminum alloy wheel hub 31 to rotate at a high speed; the hot reverse mechanical correction rotating rod 28 is used to apply an outward torque along the center direction to the inner rim of the rotating aluminum alloy wheel hub 31; If υ1>υ1', and υ2<υ2', it indicates that the aluminum alloy wheel hub 31 is deformed outward, and the transmission unit is turned on to drive the aluminum alloy wheel hub 31 to rotate at a high speed; the hot reverse mechanical correction rotating rod 28 is used to apply a torque inward along the center direction to the outer rim of the rotating aluminum alloy wheel hub 31; Among them, υ1' is the calculated value of the theoretical rotation speed of the inner rim of the aluminum alloy wheel hub, υ2' is the calculated value of the theoretical rotation speed of the outer rim of the aluminum alloy wheel hub, υ1 is the actual rotation speed of the inner rim of the aluminum alloy wheel hub measured by laser ranging, and υ2 is the actual rotation speed of the inner rim of the aluminum alloy wheel hub measured by laser ranging.

[0134] According to an embodiment of the present invention, the rotation speed of the low-speed rotation is 10 r·min -1 -15r·min -1 The high speed rotation speed is 1000r / min -1 -1450r·min -1 .

[0135] According to an embodiment of the present invention, when υ1<υ1' and υ2>υ2', the hot reverse mechanical correction rod 28 is adjusted to be close to the inner rim of the aluminum alloy wheel hub 31, and the hot reverse mechanical correction rod 28 applies an outward torque along the center direction to the rotating aluminum alloy wheel hub 31, so as to perform hot reverse mechanical correction on the inner rim of the aluminum alloy wheel hub 31.

[0136] According to an embodiment of the present invention, when υ1<υ1' and υ2>υ2', the hot reverse mechanical correction rotary rod connecting rod positioner 36 is started, the hot reverse mechanical correction rotary rod 28 is moved close to the inner rim of the aluminum alloy wheel hub 31, and the "concave" shaped correction end of the hot reverse mechanical correction rotary rod 28 is made to contact the inner rim of the aluminum alloy wheel hub 31, and the hot reverse mechanical correction rotary rod 28 applies an outward torque along the center direction to the rotating aluminum alloy wheel hub 31, so as to perform hot reverse mechanical correction on the inner rim of the aluminum alloy wheel hub 31.

[0137] According to an embodiment of the present invention, when υ1>υ1' and υ2<υ2', the hot reverse mechanical correction rod 28 is adjusted to be close to the outer rim of the aluminum alloy wheel hub 31, and the hot reverse mechanical correction rod 28 applies an inward torque along the center direction of the circle to the rotating aluminum alloy wheel hub 31, thereby performing hot reverse mechanical correction on the outer rim of the aluminum alloy wheel hub 31.

[0138] According to an embodiment of the present invention, when υ1>υ1' and υ2<υ2', the hot reverse mechanical correction rotary rod connecting rod positioner 36 is started, the hot reverse mechanical correction rotary rod 28 is moved close to the outer rim of the aluminum alloy wheel hub 31, and the "concave" shaped correction end of the hot reverse mechanical correction rotary rod 28 is made to contact the outer rim of the aluminum alloy wheel hub 31, and the hot reverse mechanical correction rotary rod 28 applies an inward torque along the center direction of the circle to the rotating aluminum alloy wheel hub 31, so as to perform hot reverse mechanical correction on the outer rim of the aluminum alloy wheel hub 31.

[0139] According to an embodiment of the present invention, when the comparison deviation between υ1 and υ1' and between υ2 and υ2' is less than 2%, the transmission unit (the gear drive motor 3 of the transmission unit) is turned off to complete the hot reverse mechanical correction and detection of the aluminum alloy wheel hub 31.

[0140] According to an embodiment of the present invention, the contrast deviation between υ1 and υ1' being less than 2% means |υ1-υ1'| / υ1'<2%; the contrast deviation between υ2 and υ2' being less than 2% means |υ2-υ2'| / υ2'<2%.

[0141] According to the embodiment of the present invention, in step (iii), by starting the hot reverse mechanical correction rotating rod connecting rod positioner 36, the hot reverse mechanical correction rotating rod 28 is brought into contact with the aluminum alloy wheel hub 31, so that the hot reverse mechanical correction rotating rod 28 applies a torque inward or outward along the center direction to the rotating aluminum alloy wheel hub 31. Preferably, the hot reverse mechanical correction rotating rod 28 is brought close to the outer rim of the aluminum alloy wheel hub 31, and the "concave" correction end of the hot reverse mechanical correction rotating rod 28 is brought into contact with the outer rim of the aluminum alloy wheel hub 31; or, the hot reverse mechanical correction rotating rod 28 is brought close to the inner rim of the aluminum alloy wheel hub 31, and the "concave" correction end of the hot reverse mechanical correction rotating rod 28 is brought into contact with the inner rim of the aluminum alloy wheel hub 31.

[0142] According to an embodiment of the present invention, the method further comprises the steps of: (iv) pushing the top box mold 27, taking out the metal core 26 manually or mechanically, and then taking out the aluminum alloy wheel hub 31 manually or mechanically, and inspecting the dimensional tolerance, surface finish and dynamic balance quality of the aluminum alloy wheel hub 31.

[0143] The technical scheme of the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the following embodiments are only exemplary descriptions and explanations of the present invention and should not be construed as limiting the scope of protection of the present invention. All technologies implemented based on the above content of the present invention are included in the scope that the present invention is intended to protect.

[0144] Unless otherwise specified, the experimental methods used in the following examples are all conventional methods; the reagents, materials, etc. used in the following examples, unless otherwise specified, can be obtained from commercial channels.

[0145] Example 1 This embodiment provides a hot reverse mechanical correction and detection device for an aluminum alloy wheel hub of a new energy vehicle, the hot reverse mechanical correction and detection device comprising a metal mold low-pressure casting unit, a mold cavity unit, a transmission unit and a correction and detection unit; the correction and detection unit and the mold cavity unit are arranged above the metal mold low-pressure casting unit; the transmission unit is arranged on one side of the metal mold low-pressure casting unit; The metal mold low-pressure casting unit includes a bottom plate 1, a bottom plate support column 6, a casting platform 7, a crucible slot coordination ring 8, a crucible 9, a riser tube coordination ring 10, a transmission gear 11, a transmission gear bearing 12 and a riser tube 13; The transmission unit includes a gear drive motor support rod 2, a gear drive motor 3, a gear drive motor speed rod 4 and a gear 5; The mold cavity unit includes a left box mold displacer 14, a left box mold slide 15, a left box mold 16, a rear box mold displacer 17, a rear box mold slide 18, a rear box mold 19, a right box mold displacer 20, a right box mold slide 21, a right box mold 22, a front box mold displacer 23, a front box mold slide 24, a front box mold 25, a metal core 26 and a top box mold 27; The correction and detection unit comprises a hot reverse mechanical correction rotating rod 28, an inner rim laser rangefinder 29, an outer rim laser rangefinder 30, an aluminum alloy wheel hub 31, a support rod 32, a support rod positioner 33, a support rod connecting frame 34, a hot reverse mechanical correction rotating rod connecting rod 35, a hot reverse mechanical correction rotating rod connecting rod positioner 36, a support rod connecting frame limiting column fastening nut 37, a support rod connecting frame limiting column 38, an inner rim laser rangefinder connecting rod limiter 39, an inner rim laser rangefinder connecting rod 40, an inner rim laser rangefinder connecting rod positioner 41, an outer rim laser rangefinder connecting rod limiter 42, an outer rim laser rangefinder connecting rod 43 and an outer rim laser rangefinder connecting rod positioner 44; In the transmission unit, the gear-driven motor support rod 2 is connected to the gear-driven motor speed rod 4 through the gear-driven motor 3, and the gear-driven motor speed rod 4 is connected to the gear 5; and the centers of the gear-driven motor support rod 2, the gear-driven motor 3, the gear-driven motor speed rod 4 and the gear 5 are collinear; The gear drive motor 3 drives the gear 5 to rotate through the gear drive motor speed rod 4, the gear 5 drives the transmission gear 11 to rotate, and the transmission gear 11 drives the aluminum alloy wheel hub 31 to rotate; In the metal mold low-pressure casting unit, the crucible slot coordination ring 8 is limitedly matched with the central circular hole of the casting platform 7; the crucible 9 is limitedly matched with the crucible slot coordination ring 8; the transmission gear 11 is located directly above the crucible 9; the riser tube coordination ring 10 is located below the transmission gear 11 and is connected to the transmission gear 11; the transmission gear bearing 12 is located at the center of the transmission gear 11 and is limitedly matched by the riser tube coordination ring 10; the riser tube 13 passes through the transmission gear bearing 12 and the riser tube coordination ring 10, and is positioned by the riser tube coordination ring 10; The bottom plate 1 is located below the casting platform 7, and the bottom plate 1 is connected to the casting platform 7 through the bottom plate support column 6; the bottom end of the riser 13 is located inside the crucible 9, and the top end of the riser 13 is located above the transmission gear 11; the riser 13, the transmission gear bearing 12, the transmission gear 11, the riser coordination ring 10 and the crucible 9 are collinear; the top surface of the crucible 9 is coplanar with the horizontal plane of the casting platform 7; In the mold cavity unit, the left box mold 16 is located on the left side of the metal core 26, the right box mold 22 is located on the right side of the metal core 26, the rear box mold 19 is located on the rear side of the metal core 26, the front box mold 25 is located on the front side of the metal core 26, and the top box mold 27 is located directly above the metal core 26. The left box mold 16, the rear box mold 19, the right box mold 22, the front box mold 25, the metal core 26 and the top box mold 27 together constitute a casting cavity for the aluminum alloy wheel hub; The left box mold displacer 14 is connected to the left box mold 16 through the left box mold slide rail 15, the right box mold displacer 20 is connected to the right box mold 22 through the right box mold slide rail 21, the rear box mold displacer 17 is connected to the rear box mold 19 through the rear box mold slide rail 18, and the front box mold displacer 23 is connected to the front box mold 25 through the front box mold slide rail 24; The metal core 26 is located directly above the transmission gear 11, and the metal core 26 is colinear with the center of the transmission gear 11; the left box mold 16, the right box mold 22, the rear box mold 19, the front box mold 25, the rear box mold displacer 17, the front box mold displacer 23, the right box mold displacer 20 and the left box mold displacer 14 are located on the casting platform 7 of the metal mold low-pressure casting unit; In the correction and detection unit, the hot reverse mechanical correction rotary rod 28 is located at the center of the top box mold 27 and is limitedly matched with the top box mold 27; the top end of the hot reverse mechanical correction rotary rod 28 is connected to the hot reverse mechanical correction rotary rod connecting rod positioner 36 through the hot reverse mechanical correction rotary rod connecting rod 35; the center points of the hot reverse mechanical correction rotary rod connecting rod 35 and the hot reverse mechanical correction rotary rod connecting rod positioner 36 are collinear; the hot reverse mechanical correction rotary rod connecting rod positioner 36 is used to adjust the distance between the hot reverse mechanical correction rotary rod 28 and the top box mold 27; the hot reverse mechanical correction rotary rod 28 is used to apply an inward or outward torque along the center direction of the circle to the aluminum alloy wheel hub 31, so as to realize hot reverse mechanical correction of the aluminum alloy wheel hub 31; The top end of the inner wheel rim laser rangefinder 29 is located inside the top box mold 27 and is limitedly matched with the top box mold 27; the bottom end of the inner wheel rim laser rangefinder 29 is located below the top box mold 27; the inner wheel rim laser rangefinder 29 is used to measure the distance of the inner wheel rim of the aluminum alloy wheel hub; the top end of the inner wheel rim laser rangefinder 29 is connected to the bottom end of the inner wheel rim laser rangefinder connecting rod 40, and the top end of the inner wheel rim laser rangefinder connecting rod 40 is connected to the inner wheel rim laser rangefinder connecting rod 40 through the inner wheel rim laser rangefinder. The distance meter connecting rod stopper 39 is connected to the inner rim laser distance meter connecting rod positioner 41; the center points of the inner rim laser distance meter connecting rod stopper 39, the inner rim laser distance meter connecting rod 40 and the inner rim laser distance meter connecting rod positioner 41 are collinear; the inner rim laser distance meter connecting rod positioner 41 is located directly above the inner rim laser distance meter connecting rod 40, and is used to adjust the distance between the inner rim laser distance meter 29 of the aluminum alloy wheel hub and the bottom end of the top box mold 27; The top end of the outer wheel rim laser rangefinder 30 is located inside the top box mold 27 and is limitedly matched with the top box mold 27; the bottom end of the outer wheel rim laser rangefinder 30 is located below the top box mold 27; the outer wheel rim laser rangefinder 30 is used to measure the distance of the outer wheel rim of the aluminum alloy wheel hub; the top end of the outer wheel rim laser rangefinder 30 is connected to the bottom end of the outer wheel rim laser rangefinder connecting rod 43, and the top end of the outer wheel rim laser rangefinder connecting rod 43 is connected to the outer wheel rim laser rangefinder connecting rod 43 through the outer wheel rim laser rangefinder. The distance meter connecting rod stopper 42 is connected to the outer wheel rim laser distance meter connecting rod positioner 44; the center points of the outer wheel rim laser distance meter connecting rod stopper 42, the outer wheel rim laser distance meter connecting rod 43 and the outer wheel rim laser distance meter connecting rod positioner 44 are collinear; the outer wheel rim laser distance meter connecting rod positioner 44 is located directly above the outer wheel rim laser distance meter connecting rod 43, and is used to adjust the distance between the outer wheel rim laser distance meter 30 of the aluminum alloy wheel hub and the bottom end of the top box mold 27; The support rod connecting frame 34 is located directly above the hot reverse mechanical correction rotary rod connecting rod 35, the hot reverse mechanical correction rotary rod connecting rod positioner 36 is located directly above the support rod connecting frame 34, and the lower end of the support rod connecting frame 34 is connected to the hot reverse mechanical correction rotary rod connecting rod 35, and the upper end of the support rod connecting frame 34 is connected to the hot reverse mechanical correction rotary rod connecting rod positioner 36; The bottom of the support rod 32 is connected to the casting platform 7, and the top of the support rod 32 is connected to the support rod connecting frame 34; the support rod positioner 33 is arranged on the support rod 32; the center points of the support rod connecting frame 34, the hot reverse mechanical correction rotary rod connecting rod 35 and the hot reverse mechanical correction rotary rod connecting rod positioner 36 are collinear; the support rods 32 are distributed at the four corners of the casting platform 7, and the support rods 32 are symmetrically distributed along the length direction of the casting platform 7; the support rod positioner 33 is arranged at the middle position of the support rod 32 along the height direction. The number of the support rod positioners 33 is 4; the support rod positioner 33 is used to adjust the position of the top box mold 27, for example, to adjust the distance between the top box mold 27 and the casting platform 7 or to adjust the distance between the top box mold 27 and the metal core 26; The bottom end of the support rod connecting frame limiting column 38 is connected to the top box mold 27 in the mold cavity unit through the support rod connecting frame limiting column fastening nut 37; the top end of the support rod connecting frame limiting column 38 is connected to the support rod connecting frame 34; the number of the support rod connecting frame limiting columns 38 is 4, and the support rod connecting frame limiting columns 38 are located at the midpoint of each beam of the "X"-shaped support rod connecting frame 34; the support rod connecting frame limiting columns 38 are used to provide structural support to the support rod connecting frame 34 on the top box mold 27.

[0146] In a preferred embodiment of the present invention, the shape of the hot reverse mechanical correction rotary rod 28 is an "L" shape, the short side of the "L" shape is connected to the bottom end of the hot reverse mechanical correction rotary rod connecting rod 35, and the long side of the "L" shape is a correction side with a correction end. The length of the long side of the "L" shape is greater than the outer diameter of the aluminum alloy wheel hub 31. The shape of the correction end is a "concave" shape, and the end of the "concave" shape is hemispherical. The width of the groove of the "concave" shape is greater than the thickness of the rim of the aluminum alloy wheel hub 31.

[0147] Example 2 This embodiment provides a method for hot reverse mechanical correction and detection of aluminum alloy wheel hubs for new energy vehicles. The method is based on the hot reverse mechanical correction and detection device for aluminum alloy wheel hubs for new energy vehicles described in Embodiment 1. The method comprises the following steps: (i-1) Start the left box mold displacer 14, the right box mold displacer 20, the front box mold displacer 23 and the rear box mold displacer 17 to push the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 to move toward the center of the metal core 26; start the support rod positioner 33 to push the top box mold 27 to move downward in the vertical direction; the left box mold 16, the right box mold 22, the front box mold 25, the rear box mold 19, the metal core 26 and the top box mold 27 constitute the casting cavity of the aluminum alloy wheel hub; (i-2) preheating the left box mold 16, the right box mold 22, the front box mold 25, the rear box mold 19, the metal core 26 and the top box mold 27, so that the mold temperature of the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 is 280°C-320°C, and the mold temperature of the metal core 26 and the top box mold 27 is 200°C-240°C; (i-3) Fill the crucible 9 with aluminum alloy melt, start the low-pressure casting machine, and the aluminum alloy melt in the crucible 9 flows through the liquid riser 13 under pressure and is injected into the casting cavity of the aluminum alloy wheel hub, wherein the temperature of the aluminum alloy melt is 685°C-715°C, the liquid rise pressure of the aluminum alloy melt is 40kPa-55kPa, the liquid rise pressure is 5kPa-15kPa, and the liquid rise speed is 6kPa·s -1 -12kPa -1 , the holding time is 180s-300s, completing the metal mold low-pressure casting of the aluminum alloy wheel hub 31 to prepare the aluminum alloy wheel hub 31; (ii) After the low-pressure casting of the aluminum alloy wheel hub 31 is completed, the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 are respectively moved outward by 40-80 mm along the center direction of the metal mold core 26; the top box mold 27 is pushed upward in the vertical direction so that the distance between the top box mold 27 and the metal mold core 26 is 120 mm-150 mm; (iii) starting the inner wheel rim laser distance meter connecting rod positioner 41, adjusting the inner wheel rim laser distance meter 29 to a height distance between the inner wheel rim laser distance meter 29 and the edge of the inner wheel rim of the aluminum alloy wheel hub 31 of 15 mm to 35 mm; starting the outer wheel rim laser distance meter connecting rod positioner 44, adjusting the outer wheel rim laser distance meter 30 to a height distance between the outer wheel rim laser distance meter 30 and the edge of the outer wheel rim of the aluminum alloy wheel hub 31 of 15 mm to 35 mm; Turn on the gear drive motor 3, and drive the gear 5 to rotate through the gear drive motor speed rod 4, the gear 5 drives the transmission gear 11 to rotate, and the transmission gear 11 drives the aluminum alloy wheel hub 31 to rotate; the rotation speed is 10r·min -1 -15r·min -1 ; The inner wheel rim laser rangefinder 29 is turned on to perform laser distance measurement on the inner wheel rim of the aluminum alloy wheel hub 31, and the outer wheel rim laser rangefinder 30 is turned on to perform laser distance measurement on the outer wheel rim of the aluminum alloy wheel hub 31; The laser distance measurement results and theoretical values ​​of the inner wheel rim laser distance meter 29 and the outer wheel rim laser distance meter 30 are calculated according to Formula 1: Formula 1 in, L It is the circumference of the inner rim or outer rim of the aluminum alloy wheel hub; ω is the rotation speed of the aluminum alloy wheel; The laser distance measurement results of the inner wheel rim laser distance meter 29 and the outer wheel rim laser distance meter 30 are compared with the theoretical values: If υ1<υ1', and υ2>υ2', it indicates that the aluminum alloy wheel hub 31 is deformed inward, and the gear drive motor 3 is turned on to drive the aluminum alloy wheel hub 31 to rotate; the hot reverse mechanical correction rod 28 is used to apply a torque outward along the center direction to the inner rim of the rotating aluminum alloy wheel hub 31; the rotation speed is 1000r·min -1 -1450r·min -1 ; If υ1>υ1', and υ2<υ2', it indicates that the aluminum alloy wheel hub 31 is deformed outward, and the gear drive motor 3 is turned on to drive the aluminum alloy wheel hub 31 to rotate; the hot reverse mechanical correction rod 28 is used to apply a torque inward along the center direction to the outer rim of the rotating aluminum alloy wheel hub 31; the rotation speed is 1000r·min -1 -1450r·min -1 ; Among them, υ1' is the theoretical rotation speed calculated value of the inner rim of the aluminum alloy wheel hub, υ2' is the theoretical rotation speed calculated value of the outer rim of the aluminum alloy wheel hub, υ1 is the actual rotation speed of the inner rim of the aluminum alloy wheel hub measured by laser ranging, and υ2 is the actual rotation speed of the inner rim of the aluminum alloy wheel hub measured by laser ranging; When υ1<υ1' and υ2>υ2', the hot reverse mechanical correction rotating rod connecting rod positioner 36 is started, the hot reverse mechanical correction rotating rod 28 is brought close to the inner rim of the aluminum alloy wheel hub 31, and the "concave" correction end of the hot reverse mechanical correction rotating rod 28 is brought into contact with the inner rim of the aluminum alloy wheel hub 31, and the hot reverse mechanical correction rotating rod 28 applies an outward torque along the center direction to the rotating aluminum alloy wheel hub 31, so as to perform hot reverse mechanical correction on the inner rim of the aluminum alloy wheel hub 31; When υ1>υ1' and υ2<υ2', the hot reverse mechanical correction rotating rod connecting rod positioner 36 is started, the hot reverse mechanical correction rotating rod 28 is brought close to the outer rim of the aluminum alloy wheel hub 31, and the "concave" correction end of the hot reverse mechanical correction rotating rod 28 is brought into contact with the outer rim of the aluminum alloy wheel hub 31, and the hot reverse mechanical correction rotating rod 28 applies an inward torque along the center direction to the rotating aluminum alloy wheel hub 31, so as to perform hot reverse mechanical correction on the outer rim of the aluminum alloy wheel hub 31; When the comparison deviation between υ1 and υ1' and between υ2 and υ2' is less than 2%, the transmission gear drive motor 3 is turned off to complete the hot reverse mechanical correction and detection of the aluminum alloy wheel hub 31.

[0148] (iv) pushing the top box mold 27, taking out the metal core 26 manually or mechanically, and then taking out the aluminum alloy wheel hub 31 manually or mechanically, and inspecting the dimensional tolerance, surface finish and dynamic balance quality of the aluminum alloy wheel hub 31.

[0149] Example 3 This embodiment provides a method for hot reverse mechanical correction and detection of aluminum alloy wheel hubs for new energy vehicles. The method is based on the hot reverse mechanical correction and detection device for aluminum alloy wheel hubs for new energy vehicles described in Example 1 and the hot reverse mechanical correction and detection method for aluminum alloy wheel hubs for new energy vehicles described in Example 2. The method specifically includes the following steps: In step (i-2), the left box mold 16, the right box mold 22, the front box mold 25, the rear box mold 19, the metal core 26 and the top box mold 27 are preheated so that the mold temperature of the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 is 300°C, and the mold temperature of the metal core 26 and the top box mold 27 is 220°C; In step (i-3), the low-pressure casting temperature of the aluminum alloy melt is 700°C, the liquid lifting pressure of the aluminum alloy melt is 50 kPa, the liquid lifting pressure is 10 kPa, and the liquid lifting speed is 8 kPa·s -1 , the holding time is 240s; In step (ii), after the low-pressure casting of the aluminum alloy wheel hub 31 is completed, the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 are respectively moved outward by 60 mm along the center direction of the metal core 26; the top box mold 27 is pushed upward in the vertical direction so that the distance between the top box mold 27 and the metal core 26 is 135 mm; In step (iii), the height distance between the inner rim laser distance meter 29 and the edge of the inner rim of the aluminum alloy wheel hub 31 is 25 mm; the height distance between the outer rim laser distance meter 30 and the edge of the outer rim of the aluminum alloy wheel hub 31 is 25 mm; the rotation speed of the aluminum alloy wheel hub 31 at low speed is 12 r / min -1 The aluminum alloy wheel hub 31 rotates at a high speed of 1250 r / min. -1 .

[0150] The working mode of the gear drive motor 3 is stepping, the step angle is 1.4°, the torque is 3000N·m, and the moment of inertia is 1600Kg·m 2 , rated power is 650kW; the module of gear 5 is 32, the number of teeth is 28, the pressure angle is 20°, and the tooth width is 0.3; the module of the transmission gear 11 is 85, the number of teeth is 100, the pressure angle is 22°, and the tooth width is 0.4; the inner diameter of the transmission gear bearing 12 is 130mm, the outer diameter is 190mm, the width is 22mm, the dynamic load is 4250N, the static load is 1350N, and the limit speed is 6250r·min -1 .

[0151] The resolution of the inner rim laser rangefinder 29 and the outer rim laser rangefinder 30 is 0.8mm, the measuring distance is 200m, the measuring accuracy is ±0.8mm, the laser is visible red light, the wavelength of visible red light is 650nm, the safety level is Class3R, the environmental protection level is IP 67, and the data storage frequency is 0.05s.

[0152] The aluminum alloy wheel hub in Example 3 is made of A356. Table 1 shows the comparison between Example 3 and the process method of manually correcting the aluminum alloy wheel hub. Fig.12 This is a schematic diagram of the aluminum alloy wheel hub for new energy vehicles prepared in Example 3.

[0153] Table 1 Comparison of the effects of Example 3 and the manual mechanical correction process for aluminum alloy wheels

[0154] Example 4 This embodiment provides a method for hot reverse mechanical correction and detection of aluminum alloy wheel hubs for new energy vehicles. The method is based on the hot reverse mechanical correction and detection device for aluminum alloy wheel hubs for new energy vehicles described in Example 1 and the hot reverse mechanical correction and detection method for aluminum alloy wheel hubs for new energy vehicles described in Example 2. The method specifically includes the following steps: In step (i-2), the left box mold 16, the right box mold 22, the front box mold 25, the rear box mold 19, the metal core 26 and the top box mold 27 are preheated so that the mold temperature of the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 is 280°C, and the mold temperature of the metal core 26 and the top box mold 27 is 200°C; In step (i-3), the low-pressure casting temperature of the aluminum alloy melt is 685°C, the liquid lifting pressure of the aluminum alloy melt is 40 kPa, the liquid lifting pressure is 5 kPa, and the liquid lifting speed is 6 kPa·s -1 , the holding time is 180s; In step (ii), after the low-pressure casting of the aluminum alloy wheel hub 31 is completed, the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 are respectively moved outward by 40 mm along the center direction of the metal core 26; the top box mold 27 is pushed upward in the vertical direction so that the distance between the top box mold 27 and the metal core 26 is 120 mm; In step (iii), the height distance between the inner rim laser distance meter 29 and the edge of the inner rim of the aluminum alloy wheel hub 31 is 15 mm; the height distance between the outer rim laser distance meter 30 and the edge of the outer rim of the aluminum alloy wheel hub 31 is 15 mm; the rotation speed of the aluminum alloy wheel hub 31 at a low speed is 10 r / min -1 The aluminum alloy wheel hub 31 rotates at a high speed of 1000 r / min. -1 .

[0155] The working mode of the gear drive motor 3 is stepping, the step angle is 1.2°, the torque is 2000N·m, and the moment of inertia is 800Kg·m 2 , rated power is 450kW; the module of gear 5 is 25, the number of teeth is 24, the pressure angle is 18°, and the tooth width is 0.2; the module of the transmission gear 11 is 75, the number of teeth is 80, the pressure angle is 20°, and the tooth width is 0.3; the inner diameter of the transmission gear bearing 12 is 120mm, the outer diameter is 180mm, the width is 20mm, the dynamic load is 4000N, the static load is 1200N, and the limit speed is 6000r·min -1 .

[0156] The resolution of the inner rim laser rangefinder 29 and the outer rim laser rangefinder 30 is 0.5mm, the measuring distance is 120m, the measuring accuracy is ±1.0mm, the laser is visible red light, the wavelength of visible red light is 615nm, the safety level is Class3R, the environmental protection level is IP 67, and the data storage frequency is 0.02s.

[0157] The material of the aluminum alloy wheel hub in Example 4 is A357. Table 2 shows the comparative effect of the process method of Example 4 and the conventional mechanical correction of the aluminum alloy wheel hub. Fig.13 This is a schematic diagram of the aluminum alloy wheel hub for new energy vehicles prepared in Example 4.

[0158] Table 2 Comparison of the effects of Example 4 and conventional mechanical correction process for aluminum alloy wheels

[0159] Example 5 This embodiment provides a method for hot reverse mechanical correction and detection of aluminum alloy wheel hubs for new energy vehicles. The method is based on the hot reverse mechanical correction and detection device for aluminum alloy wheel hubs for new energy vehicles described in Example 1 and the hot reverse mechanical correction and detection method for aluminum alloy wheel hubs for new energy vehicles described in Example 2. The method specifically includes the following steps: In step (i-2), the left box mold 16, the right box mold 22, the front box mold 25, the rear box mold 19, the metal core 26 and the top box mold 27 are preheated so that the mold temperature of the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 is 320°C, and the mold temperature of the metal core 26 and the top box mold 27 is 240°C; In step (i-3), the low-pressure casting temperature of the aluminum alloy melt is 715°C, the liquid lifting pressure of the aluminum alloy melt is 55 kPa, the liquid lifting pressure is 15 kPa, and the liquid lifting speed is 12 kPa.s -1 , the holding time is 300s; In step (ii), after the low-pressure casting of the aluminum alloy wheel hub 31 is completed, the left box mold 16, the right box mold 22, the front box mold 25 and the rear box mold 19 are respectively moved outward by 60 mm along the center direction of the metal core 26; the top box mold 27 is pushed upward in the vertical direction so that the distance between the top box mold 27 and the metal core 26 is 150 mm; In step (iii), the distance between the inner rim laser distance meter 29 and the edge of the inner rim of the aluminum alloy wheel hub 31 is 40 mm; the distance between the outer rim laser distance meter 30 and the edge of the outer rim of the aluminum alloy wheel hub 31 is 40 mm; the rotation speed of the aluminum alloy wheel hub 31 at low speed is 15 r / min -1 The aluminum alloy wheel hub 31 rotates at a high speed of 1450 r / min. -1 .

[0160] The working mode of the gear drive motor 3 is stepping, the step angle is 1.5°, the torque is 4000N·m, and the moment of inertia is 2400Kg·m 2, rated power is 800 kW; the module of gear 5 is 40, the number of teeth is 32, the pressure angle is 22°, and the tooth width is 0.4; the module of the transmission gear 11 is 100, the number of teeth is 120, the pressure angle is 25°, and the tooth width is 0.5; the inner diameter of the transmission gear bearing 12 is 140mm, the outer diameter is 200mm, the width is 24mm, the dynamic load is 4500N, the static load is 1500N, and the limit speed is 6500r·min -1 .

[0161] The resolution of the inner rim laser rangefinder 29 and the outer rim laser rangefinder 30 is 1.0mm, the measuring distance is 500m, the measuring accuracy is ±0.5mm, the laser is visible red light, the wavelength of visible red light is 680nm, the safety level is Class3R, the environmental protection level is IP 67, and the data storage frequency is 0.1s.

[0162] The aluminum alloy wheel hub in Example 5 is made of A356. Table 3 shows the comparison between Example 5 and the process method of manually correcting the aluminum alloy wheel hub. Fig.14 This is a schematic diagram of the aluminum alloy wheel hub for new energy vehicles prepared in Example 5.

[0163] Table 3 Comparison of the effects of Example 5 and the manual mechanical correction process for aluminum alloy wheels

[0164] The above is an explanation of the embodiments of the present invention. However, the present invention is not limited to the above embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hot reverse mechanical correction and detection device for aluminum alloy wheels of new energy vehicles, characterized in that: The hot reverse mechanical correction and detection device comprises a metal mold low-pressure casting unit, a mold cavity unit, a transmission unit and a correction and detection unit; the correction and detection unit and the mold cavity unit are arranged above the metal mold low-pressure casting unit; the transmission unit is arranged on one side of the metal mold low-pressure casting unit; The mold cavity unit comprises a left box mold (16), a rear box mold (19), a right box mold (22), a front box mold (25), a metal core (26) and a top box mold (27); the left box mold (16), the rear box mold (19), the right box mold (22) and the front box mold (25) are located around the metal core (26), the top box mold (27) is located directly above the metal core (26), and the left box mold (16), the rear box mold (19), the right box mold (22), the front box mold (25), the metal core (26) and the top box mold (27) constitute a casting cavity for the aluminum alloy wheel hub; The correction and detection unit comprises a hot reverse mechanical correction rotating rod (28), an inner wheel rim laser distance meter (29), an aluminum alloy wheel hub (31) and an outer wheel rim laser distance meter (30); The hot reverse mechanical correction rotating rod (28) is located at the center of the top box mold (27) and is limitedly matched with the top box mold (27); the inner wheel rim laser distance meter (29) is located on one side of the top box mold (27) and is limitedly matched with the top box mold (27); and the outer wheel rim laser distance meter (30) is located on the other side of the top box mold (27) and is limitedly matched with the top box mold (27).

2. The thermal reverse mechanical correction and detection device according to claim 1, characterized in that: The transmission unit comprises a gear-driven motor support rod (2), a gear-driven motor (3), a gear-driven motor speed rod (4) and a gear (5); the gear-driven motor support rod (2) and the gear-driven motor speed rod (4) are connected via the gear-driven motor (3), and the gear-driven motor speed rod (4) is connected to the gear (5); the centers of the gear-driven motor support rod (2), the gear-driven motor (3), the gear-driven motor speed rod (4) and the gear (5) are collinear; The metal mold low-pressure casting unit comprises a casting platform (7), a crucible slot coordination ring (8), a crucible (9), a liquid riser coordination ring (10), a transmission gear (11), a transmission gear bearing (12) and a liquid riser (13); the crucible slot coordination ring (8) is in position-limiting cooperation with the central circular hole of the casting platform (7); the crucible (9) is in position-limiting cooperation with the crucible slot coordination ring (8); the transmission gear (11) is located directly above the crucible (9); the liquid riser (13 ... The liquid pipe coordination ring (10) is located below the transmission gear (11) and is connected to the transmission gear (11); the transmission gear bearing (12) is located at the center of the transmission gear (11) and is limitedly matched by the liquid riser coordination ring (10); the liquid riser (13) passes through the transmission gear bearing (12) and the liquid riser coordination ring (10) and is positioned by the liquid riser coordination ring (10); the transmission gear (11) is gear-engaged with a gear (5) in the transmission unit.

3. The thermal reverse mechanical correction and detection device according to claim 1 or 2, characterized in that: The two sides of the left box mold (16) are in contact with the rear box mold (19) and the front box mold (25) respectively, the two sides of the rear box mold (19) are in contact with the left box mold (16) and the right box mold (22) respectively, the two sides of the right box mold (22) are in contact with the rear box mold (19) and the front box mold (25) respectively, and the two sides of the front box mold (25) are in contact with the left box mold (16) and the right box mold (22) respectively; the metal mold core (26) is located directly above the transmission gear (11) of the metal mold low-pressure casting unit, and the metal mold core (26) and the center of the transmission gear (11) are colinear; the left box mold (16), the right box mold (22), the rear box mold (19), and the front box mold (25) are located on the casting platform (7) of the metal mold low-pressure casting unit.

4. The thermal reverse mechanical correction and detection device according to claim 1, characterized in that: The mold cavity unit further comprises a left box mold displacer (14), a left box mold slide rail (15), a rear box mold displacer (17), a rear box mold slide rail (18), a right box mold displacer (20), a right box mold slide rail (21), a front box mold displacer (23) and a front box mold slide rail (24); The left box mold displacer (14) is connected to the left box mold (16) via the left box mold slide rail (15), the right box mold displacer (20) is connected to the right box mold (22) via the right box mold slide rail (21), the rear box mold displacer (17) is connected to the rear box mold (19) via the rear box mold slide rail (18), and the front box mold displacer (23) is connected to the front box mold (25) via the front box mold slide rail (24); The rear box mold displacer (17), the front box mold displacer (23), the right box mold displacer (20) and the left box mold displacer (14) are located on a casting platform (7) of a metal mold low-pressure casting unit.

5. The thermal reverse mechanical correction and detection device according to claim 1, characterized in that: The top end of the hot reverse mechanical correction rotating rod (28) is located inside the top box mold (27) and is limitedly matched with the top box mold (27); the bottom end of the hot reverse mechanical correction rotating rod (28) is located below the top box mold (27); The hot reverse mechanical correction rotating rod (28) is used to apply a torque inward or outward along the center direction to the aluminum alloy wheel hub (31), thereby achieving hot reverse mechanical correction of the aluminum alloy wheel hub (31); The shape of the hot reverse mechanical correction rotating rod (28) is an "L" shape, the short side of the "L" shape is connected to the bottom end of the hot reverse mechanical correction rotating rod connecting rod (35), and the long side of the "L" shape is a correction side with a correction end; the length of the long side of the "L" shape is greater than the outer diameter of the aluminum alloy wheel hub; the shape of the correction end is a "concave" shape, and the end of the "concave" shape is hemispherical; the width of the groove of the "concave" shape is greater than the thickness of the rim of the aluminum alloy wheel hub (31); The correction and detection unit further comprises a hot reverse mechanical correction rotary rod connecting rod (35) and a hot reverse mechanical correction rotary rod connecting rod positioner (36); the top end of the hot reverse mechanical correction rotary rod (28) is connected to the hot reverse mechanical correction rotary rod connecting rod positioner (36) via the hot reverse mechanical correction rotary rod connecting rod (35); The center points of the hot state reverse mechanical correction rotary rod connecting rod (35) and the hot state reverse mechanical correction rotary rod connecting rod positioner (36) are collinear; The hot reverse mechanical correction rotating rod connecting rod positioner (36) is used to adjust the distance between the hot reverse mechanical correction rotating rod (28) and the top box mold (27).

6. The thermal reverse mechanical correction and detection device according to claim 1, characterized in that: The top end of the inner wheel rim laser distance meter (29) is located inside the top box mold (27) and is limitedly matched with the top box mold (27); the bottom end of the inner wheel rim laser distance meter (29) is located below the top box mold (27); the top end of the outer wheel rim laser distance meter (30) is located inside the top box mold (27) and is limitedly matched with the top box mold (27); the bottom end of the outer wheel rim laser distance meter (30) is located below the top box mold (27); The calibration and detection unit further comprises an inner wheel rim laser rangefinder connecting rod stopper (39), an inner wheel rim laser rangefinder connecting rod (40) and an inner wheel rim laser rangefinder connecting rod positioner (41); the top end of the inner wheel rim laser rangefinder (29) is connected to the bottom end of the inner wheel rim laser rangefinder connecting rod (40), and the top end of the inner wheel rim laser rangefinder connecting rod (40) is connected to the inner wheel rim laser rangefinder connecting rod positioner (41) via the inner wheel rim laser rangefinder connecting rod stopper (39); the center points of the inner wheel rim laser rangefinder connecting rod stopper (39), the inner wheel rim laser rangefinder connecting rod (40) and the inner wheel rim laser rangefinder connecting rod positioner (41) are collinear; The calibration and detection unit further comprises an outer wheel rim laser rangefinder connecting rod stopper (42), an outer wheel rim laser rangefinder connecting rod (43) and an outer wheel rim laser rangefinder connecting rod positioner (44); the top end of the outer wheel rim laser rangefinder (30) is connected to the bottom end of the outer wheel rim laser rangefinder connecting rod (43), and the top end of the outer wheel rim laser rangefinder connecting rod (43) is connected to the outer wheel rim laser rangefinder connecting rod positioner (44) via the outer wheel rim laser rangefinder connecting rod stopper (42); and the center points of the outer wheel rim laser rangefinder connecting rod stopper (42), the outer wheel rim laser rangefinder connecting rod (43) and the outer wheel rim laser rangefinder connecting rod positioner (44) are collinear.

7. The thermal reverse mechanical correction and detection device according to claim 6, characterized in that: The hot reverse mechanical correction and detection unit further comprises a support rod (32), a support rod positioner (33) and a support rod connecting frame (34); The support rod connecting frame (34) is located between the hot reverse mechanical correction rotary rod connecting rod (35) and the hot reverse mechanical correction rotary rod connecting rod positioner (36); the bottom of the support rod (32) is connected to the casting platform (7) in the metal mold low-pressure casting unit, and the top of the support rod (32) is connected to the support rod connecting frame (34); the support rod positioner (33) is arranged on the support rod (32); the center points of the support rod connecting frame (34), the hot reverse mechanical correction rotary rod connecting rod (35) and the hot reverse mechanical correction rotary rod connecting rod positioner (36) are collinear.

8. A method for hot reverse mechanical correction and detection of aluminum alloy wheel hubs for new energy vehicles, the method being based on the hot reverse mechanical correction and detection device for aluminum alloy wheel hubs for new energy vehicles according to any one of claims 1 to 7, the method comprising the following steps: (i) injecting an aluminum alloy melt into a casting cavity of an aluminum alloy wheel hub (31) composed of a left box mold (16), a right box mold (22), a front box mold (25), a rear box mold (19), a metal core (26) and a top box mold (27), thereby preparing an aluminum alloy wheel hub (31); (ii) after the low-pressure casting of the aluminum alloy wheel hub (31) is completed, the left box mold (16), the right box mold (22), the front box mold (25) and the rear box mold (19) are pushed outward along the center direction of the metal mold core (26); and the top box mold (27) is pushed upward in the vertical direction; (iii) adjusting the inner wheel rim laser distance meter (29) to the edge position of the inner wheel rim of the aluminum alloy wheel hub (31), and adjusting the outer wheel rim laser distance meter (30) to the edge position of the outer wheel rim of the aluminum alloy wheel hub (31); Turning on the transmission unit to drive the aluminum alloy wheel hub (31) to rotate; The inner wheel rim laser distance meter (29) is turned on to perform laser distance measurement on the inner wheel rim of the aluminum alloy wheel hub (31), and the outer wheel rim laser distance meter (30) is turned on to perform laser distance measurement on the outer wheel rim of the aluminum alloy wheel hub (31). According to the laser distance measurement result, a hot reverse mechanical correction rotating rod (28) is used to apply an inward or outward torque along the center direction to the rotating aluminum alloy wheel hub (31), thereby achieving hot reverse mechanical correction and detection of the aluminum alloy wheel hub (31).

9. The method according to claim 8, characterized in that In step (i), the casting cavity of the aluminum alloy wheel hub (31) is prepared by the following method: Start the left box mold displacer (14), the right box mold displacer (20), the front box mold displacer (23) and the rear box mold displacer (17) to push the left box mold (16), the right box mold (22), the front box mold (25) and the rear box mold (19) to move toward the center of the metal core (26); Starting the support rod positioner (33) to push the top box mold (27) to move downward in the vertical direction; The left box mold (16), the right box mold (22), the front box mold (25), the rear box mold (19), the metal core (26) and the top box mold (27) form a casting cavity of the aluminum alloy wheel hub (31); Step (ii) specifically includes the following steps: Start the left box mold displacer (14), the right box mold displacer (20), the front box mold displacer (23) and the rear box mold displacer (17) to push the left box mold (16), the right box mold (22), the front box mold (25) and the rear box mold (19) to move outward along the center direction of the metal core (26); Starting the support rod positioner (33) to push the top box mold (27) to move upward in the vertical direction; In step (iii), the inner wheel rim laser distance meter connecting rod positioner (41) is started to adjust the inner wheel rim laser distance meter (29) to a height distance between the inner wheel rim laser distance meter (29) and the edge of the inner wheel rim of the aluminum alloy wheel hub (31) of 15 mm to 35 mm; In step (iii), the outer wheel rim laser distance meter connecting rod positioner (44) is started to adjust the outer wheel rim laser distance meter (30) to a height distance between the outer wheel rim laser distance meter (30) and the edge of the outer wheel rim of the aluminum alloy wheel hub (31) of 15 mm to 35 mm; In step (iii), the gear drive motor (3) in the transmission unit is turned on, and the gear drive motor speed rod (4) drives the gear (5) to rotate, the gear (5) drives the transmission gear (11) to rotate, and the transmission gear (11) drives the aluminum alloy wheel hub (31) to rotate.

10. The method according to claim 8 or 9, characterized in that: Step (iii) specifically includes the following steps: The inner wheel rim laser distance meter (29) is adjusted to the edge position of the inner wheel rim of the aluminum alloy wheel hub (31), and the outer wheel rim laser distance meter (30) is adjusted to the edge position of the outer wheel rim of the aluminum alloy wheel hub (31); Turning on the transmission unit to drive the aluminum alloy wheel hub (31) to rotate at a low speed; Turning on the inner wheel rim laser distance meter (29) to perform laser distance measurement on the inner wheel rim of the aluminum alloy wheel hub (31), and turning on the outer wheel rim laser distance meter (30) to perform laser distance measurement on the outer wheel rim of the aluminum alloy wheel hub (31); The laser distance measurement results and theoretical values ​​of the inner wheel rim laser distance meter (29) and the outer wheel rim laser distance meter (30) are calculated according to formula 1: Formula 1 in, L It is the circumference of the inner rim or outer rim of the aluminum alloy wheel hub; ω is the rotation speed of the aluminum alloy wheel; The laser distance measurement results of the inner wheel rim laser distance meter (29) and the outer wheel rim laser distance meter (30) are compared with the theoretical values: If υ1<υ1', and υ2>υ2', it indicates that the aluminum alloy wheel hub is deformed inwardly, and the transmission unit is turned on to drive the aluminum alloy wheel hub (31) to rotate at a high speed; a torque in an outward direction along the center of the circle is applied to the inner rim of the rotating aluminum alloy wheel hub (31) by using a hot reverse mechanical correction rotating rod (28); If υ1>υ1', and υ2<υ2', it indicates that the aluminum alloy wheel hub is deformed outward, and the transmission unit is turned on to drive the aluminum alloy wheel hub (31) to rotate at a high speed; a torque inward along the center direction is applied to the outer rim of the rotating aluminum alloy wheel hub (31) by using a hot reverse mechanical correction rotating rod (28); Among them, υ1' is the theoretical rotation speed calculated value of the inner rim of the aluminum alloy wheel hub, υ2' is the theoretical rotation speed calculated value of the outer rim of the aluminum alloy wheel hub, υ1 is the actual rotation speed of the inner rim of the aluminum alloy wheel hub by laser ranging, and υ2 is the actual rotation speed of the inner rim of the aluminum alloy wheel hub by laser ranging; the rotation speed of the low-speed rotation is 10r·min -1 -15r·min -1 The high speed rotation speed is 1000r / min -1 -1450r·min -1 .

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