Workpiece locking and positioning device for horizontal machining center of automobile auxiliary frame

Abstract

The invention relates to the field of machining equipment, and discloses an automobile auxiliary frame horizontal machining center workpiece locking and positioning device which comprises a base table, connecting plates are fixedly connected to the two sides of the base table correspondingly, rotating structures are rotationally connected to the sides, away from each other, of the connecting plates correspondingly, and a second rotating shaft is fixedly connected to the middle of the base table; the top of the second rotating shaft is rotationally connected with a platform, T-shaped grooves are evenly formed in the top of the platform, positioning structures are arranged in the T-shaped grooves of the platform, guide rails are symmetrically arranged on the upper surface of the platform, and hydraulic oil cylinders are fixedly connected to the two sides of the platform. The automobile auxiliary frame is positioned through the positioning structure, the connecting rod is driven by the hydraulic oil cylinder to move horizontally, horizontal thrust is converted into vertical downward pressure through the wedge shape of the wedge-shaped pressing block, the automobile auxiliary frame is locked on the platform, and the automobile auxiliary frame is driven by the rotating structure to rotate with the fourth rotating shaft as the circle center.

Description

Technical Field

[0001] The present invention relates to the technical field of machining equipment, and particularly to a workpiece locking and positioning device for a horizontal machining center of an automobile subframe. Background Art

[0002] In modern automobile manufacturing, the development of machining equipment technology plays a crucial role in the production quality and efficiency of automobile parts. With the rapid development of the automobile industry, especially the rapid rise of the new energy vehicle market, automobile manufacturing processes face many new challenges. As a crucial load-bearing component in the automobile chassis, the machining accuracy of the automobile subframe is directly related to the performance of the vehicle's suspension system, and thus affects the driving stability and safety of the vehicle. Horizontal machining centers, with their high efficiency and high-precision machining capabilities, have become one of the important equipment for machining automobile subframes, and the positioning and clamping devices for workpieces therein are the core links determining the machining quality.

[0003] Traditional locking and positioning devices usually adopt pneumatic floating fixtures, which use compressed air as power and are equipped with rubber buffer pads at the same time. During operation, the compressed air pushes the fixture components to move, and the rubber buffer pads play a role in absorbing vibration and buffering. However, with long-term use, the aging and fatigue of the rubber material gradually appear, and its elastic performance will continuously decay. When the elastic attenuation reaches a certain level, during the machining process, in the face of external forces such as cutting forces, the rubber buffer pads can no longer provide stable support and positioning for the automobile subframe, resulting in a small displacement of the workpiece and affecting the machining accuracy. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a workpiece locking and positioning device for a horizontal machining center of an automobile subframe, which solves the problem that traditional locking and positioning devices usually adopt pneumatic floating fixtures, which use compressed air as power and are equipped with rubber buffer pads at the same time. With long-term use, the rubber buffer pads can no longer provide stable support and positioning for the automobile subframe, resulting in a small displacement of the workpiece and affecting the machining accuracy.

[0005] To achieve the above object, the present invention is realized by the following technical solutions: A workpiece locking and positioning device for a horizontal machining center of an automobile subframe, including a base platform, both sides of the base platform are fixedly connected with connecting plates, and both sides of the connecting plates away from each other are rotatably connected with rotating structures. The middle part of the base platform is fixedly connected with a second rotating shaft, the top of the second rotating shaft is rotatably connected with a platform, the top of the platform is evenly provided with T-shaped grooves, a positioning structure is arranged inside the T-shaped grooves of the platform, guide rails are symmetrically arranged on the upper surface of the platform, hydraulic cylinders are fixedly connected to both sides of the platform, the output ends of the hydraulic cylinders are fixedly provided with connecting rods, wedge-shaped pressing blocks are symmetrically and fixedly connected to the opposite sides of the connecting rods, a pressure sensor is arranged on one side of the wedge-shaped pressing block, second sliders are symmetrically and fixedly connected to the bottom of the connecting rods, and the bottoms of the second sliders are arranged inside the guide rails. An adjusting and heat dissipation structure is fixedly connected to the bottom of the platform.

[0006] By adopting the above technical solutions, the automobile subframe is positioned through the positioning structure, the automobile subframe is driven by the rotating structure to rotate around the rotating structure as the center, the connecting rod 8 is driven to move by the hydraulic cylinder, and by using the wedge shape of the wedge-shaped pressing block 9, the horizontal thrust is converted into a vertical downward pressure to lock the automobile subframe on the platform 6. The connecting rod 8 moves more stably through the second slider 10 and the guide rail 7. The adjusting and heat dissipation structure drives the automobile subframe to rotate around the second rotating shaft 16, which further facilitates multi-angle machining of the automobile subframe and dissipates the oil temperature of the hydraulic cylinder 5, improving the service life of the device, thereby realizing high-precision positioning.

[0007] Preferably, one side of the wedge-shaped pressing block is provided with an inclined surface with an inclined surface angle of 15°. The outer circumferential wall of the second rotating shaft is fixedly connected with a second gear. An air duct is arranged inside the platform, and heat dissipation holes are evenly arranged on one side of the air duct of the platform.

[0008] Preferably, a connecting block is fixedly connected to the top of the inner wall of the air duct of the platform. An oil storage pipe is arranged on one side of the hydraulic cylinder, and one side of the oil storage pipe is fixedly connected to one side of the connecting block. The oil storage pipe is located inside the air duct of the platform.

[0009] Preferably, the adjusting and heat dissipation structure includes a U-shaped mounting plate. The top of the U-shaped mounting plate is fixedly connected to the bottom of the platform. A first motor is fixedly arranged on one side of the U-shaped mounting plate. The output end of the first motor is fixedly connected with a first rotating shaft. The top end of the first rotating shaft is rotatably connected with an air box. The top of the air box is fixedly connected to one side of the platform. The bottom of the air box is rotatably connected to the middle part of the first rotating shaft.

[0010] Preferably, the bottom of the bellows is evenly provided with air inlets, a filter plate is arranged inside the air inlets of the bellows, the top of the bellows is provided with an air outlet, the air outlet of the bellows is communicated with the air duct of the platform, the circumferential outer wall of the first rotating shaft is evenly fixedly connected with fan blades, the fan blades are located inside the bellows, the bottom of the bellows is fixedly connected with an electric push rod, and the output end of the electric push rod is fixedly connected with a first slider.

[0011] Preferably, a plurality of limiting strips are evenly fixedly connected to one side of the first rotating shaft, limiting rings are fixedly connected to both ends of the limiting strips, the middle parts of the limiting rings are fixedly connected to the outer wall of the first rotating shaft, and a first gear is slidably connected to the outer wall of the limiting strip. A T-shaped annular chute is arranged at the top of the first gear.

[0012] Preferably, the outer wall of the first slider is slidably connected to the T-shaped annular chute of the first gear, the inner wall of the first gear is slidably connected to the outer wall of the first rotating shaft, and the tooth end of the first gear can be meshed with the tooth end of the second gear.

[0013] Preferably, the rotating structure includes a base, a mounting plate is fixedly connected to the top of the base, a cavity is arranged inside the mounting plate, a second motor is fixedly arranged on one side of the inner wall of the mounting plate, and a fourth rotating shaft is rotatably connected to the inside of the mounting plate. The relatively close ends of the fourth rotating shafts are fixedly connected to the relatively far sides of the connecting plates.

[0014] Preferably, a fourth gear is fixedly connected to the circumferential outer wall of the fourth rotating shaft, the tooth end of the fourth gear is meshed with a third gear, the middle part of the third gear is fixedly connected to a third rotating shaft, one end of the third rotating shaft is rotatably connected to one side of the inner wall of the mounting plate, and the other end of the third rotating shaft is fixedly arranged at the output end of the second motor.

[0015] Preferably, the positioning structure includes a positioning pin, a bushing is fixedly connected to the bottom of the positioning pin, a bolt is fixedly connected to the bottom of the bushing, and the outer wall of the bolt is threadedly connected to the T-shaped groove inside the platform.

[0016] Working principle: During use, the automotive subframe is hoisted onto the platform and positioned through the cooperation of the positioning pins with the reference holes of the automotive subframe. The hydraulic cylinder drives the connecting rod to move horizontally closer or farther away from each other, thereby driving the wedge-shaped pressing block to move horizontally, clamping the automotive subframe, and using the wedge shape of the wedge-shaped pressing block to convert the horizontal thrust into a vertical downward pressure, thus locking the automotive subframe on the platform. The connecting rod is supported to a certain extent by the second slider and the guide rail, making its movement more stable. The pressure sensor senses the pressure of the wedge-shaped pressing block on the automotive subframe in real time, and controls the hydraulic cylinder to adjust the pressure of the wedge-shaped pressing block on the automotive subframe, thereby achieving high-precision positioning and locking. The second motor drives the third rotating shaft to rotate inside the mounting plate, causing the third gear to rotate, driving the fourth gear to rotate around the fourth rotating shaft, and then causing the fourth rotating shaft to rotate inside the mounting plate. Thus, the connecting plate rotates around the fourth rotating shaft on one side of the mounting plate, driving the base and various structures on the base to rotate around the fourth rotating shaft, and then rotating the automotive subframe on the platform around the fourth rotating shaft according to requirements to adjust the processing angle of the automotive subframe, facilitating multi-angle processing of the automotive subframe.

[0017] The first motor drives the first rotating shaft to rotate, thereby driving the fan blade to operate inside the air box, sucking the outside air into the air box, filtering it through the filter plate, and enabling the filtered air to enter the air duct to dissipate heat from the oil storage pipe inside the air duct, thereby dissipating heat from the oil temperature of the hydraulic cylinder, preventing the temperature from rising when the hydraulic cylinder works under high load for a long time, resulting in a decrease in the viscosity of the hydraulic oil and affecting the performance and efficiency of the hydraulic system, improving the service life of the device. Moreover, through the limitation of the first gear by the limiting strip, when the first rotating shaft rotates, it can drive the first gear to rotate. The electric push rod drives the first slider to move vertically, thereby driving the first gear to slide on the outer walls of the limiting strip and the first rotating shaft. Thus, according to the processing requirements, the position of the first gear is adjusted to mesh with the second gear, and then the force generated by the meshing drives the platform to rotate around the second rotating shaft, further adjusting the processing angle of the automotive subframe and facilitating multi-angle processing of it.

[0018] The present invention provides a workpiece locking and positioning device for a horizontal machining center of an automotive subframe. It has the following beneficial effects: 1. The present invention positions the automotive subframe through a positioning structure, drives a connecting rod to move horizontally through a hydraulic cylinder, and utilizes the wedge shape of the wedge-shaped pressing block to convert the horizontal thrust into a vertical downward pressure, locking the automotive subframe on the platform. The automotive subframe is driven to rotate around the fourth rotating shaft through a rotating structure for multi-angle processing of the automotive subframe. The automotive subframe is driven to rotate around the second rotating shaft through an adjustable heat dissipation structure, further facilitating multi-angle processing of the automotive subframe, and dissipating the oil temperature of the hydraulic cylinder to extend the service life of the device. The pressure sensor is used to sense the pressure of the wedge-shaped pressing block on the automotive subframe in real time, so as to more accurately cooperate with the reference hole of the automotive subframe to achieve high-precision positioning and locking.

[0019] 2. The present invention drives the first rotating shaft to rotate through the first motor, causing the fan blades to operate and sending the outside air into the air duct to dissipate heat from the oil storage pipe, preventing the temperature from rising when the hydraulic cylinder works under high load for a long time, which may affect the performance and efficiency of the hydraulic system, and extending the service life of the device. The electric push rod drives the first slider to move vertically, so that while cooling, according to the processing requirements, the position of the first gear is adjusted to mesh with the second gear, and the force generated by the meshing drives the platform to rotate around the second rotating shaft, thereby adjusting the processing angle of the automotive subframe and facilitating multi-angle processing of it.

[0020] 3. The present invention drives the third rotating shaft to rotate inside the mounting plate through the second motor, thereby driving the third gear to rotate, causing the fourth gear to rotate around the fourth rotating shaft, and further causing the fourth rotating shaft to rotate inside the mounting plate. As a result, the connecting plate rotates around the fourth rotating shaft on one side of the mounting plate, driving the base and various structures on the base to rotate around the fourth rotating shaft, and further causing the automotive subframe on the platform to rotate around the fourth rotating shaft, thereby further adjusting the processing angle of the automotive subframe and facilitating multi-angle processing of the automotive subframe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural diagram of the present invention; Figure 2 is a partial structural diagram of the base of the present invention; Figure 3 is a partial structural diagram of the inside of the platform of the present invention; Figure 4 is a partial structural diagram of the first motor of the present invention; Figure 5 is a partial structural diagram of the inside of the air box of the present invention; Figure 6 is a partial structural diagram of the first gear of the present invention; Figure 7 Schematic diagram of the internal structure of the mounting plate of the present invention; Figure 8 Schematic diagram of the partial structure of the positioning pin of the present invention.

[0022] Wherein, 1, base; 2, connecting plate; 3, base; 4, mounting plate; 5, hydraulic cylinder; 6, platform; 7, guide rail; 8, connecting rod; 9, wedge-shaped pressing block; 10, second slider; 11, positioning pin; 12, bushing; 13, pressure sensor; 14, fourth gear; 15, fourth rotating shaft; 16, second rotating shaft; 17, second gear; 18, U-shaped mounting plate; 19, first motor; 20, oil storage pipe; 21, air duct; 22, heat dissipation hole; 23, air box; 24, first gear; 25, filter plate; 26, electric push rod; 27, limit ring; 28, limit strip; 29, first rotating shaft; 30, air inlet; 31, air outlet; 32, fan blade; 33, T-shaped annular chute; 34, first slider; 35, second motor; 36, third rotating shaft; 37, third gear; 38, bolt; 39, connecting block. Specific embodiments

[0023] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to the attached Figure 1 - attached Figure 8 , the embodiment of the present invention provides a workpiece locking and positioning device for a horizontal machining center of an automotive subframe, including a base 1, both sides of the base 1 are fixedly connected with connecting plates 2, and both sides of the connecting plates 2 away from each other are rotatably connected with rotating structures. The middle of the base 1 is fixedly connected with a second rotating shaft 16, the top of the second rotating shaft 16 is rotatably connected with a platform 6, the top of the platform 6 is evenly provided with T-shaped grooves, a positioning structure is arranged inside the T-shaped grooves of the platform 6, guide rails 7 are symmetrically arranged on the upper surface of the platform 6, hydraulic cylinders 5 are fixedly connected to both sides of the platform 6, the output ends of the hydraulic cylinders 5 are fixedly provided with connecting rods 8, wedge-shaped pressing blocks 9 are symmetrically and fixedly connected to the opposite sides of the connecting rods 8, a pressure sensor 13 is arranged on one side of the wedge-shaped pressing block 9, second sliders 10 are symmetrically and fixedly connected to the bottoms of the connecting rods 8, and the bottoms of the second sliders 10 are arranged inside the guide rails 7. An adjustable heat dissipation structure is fixedly connected to the bottom of the platform 6.

[0025] Specifically, each structure is installed through the base 1. Through the operation of the rotating structure, the connecting plate 2 is driven to rotate around the rotating structure as the center, thereby driving the base 1 and each structure on the base 1 to rotate around the rotating structure as the center. The automotive subframe is placed through the platform 6. The positioning structure is matched with the reference holes of the automotive subframe on the platform 6 to position the automotive subframe, thereby driving the automotive subframe to rotate around the rotating structure as the center, facilitating multi-angle machining of the automotive subframe. The base 1 and the platform 6 are rotationally connected through the second rotating shaft 16, facilitating the rotation of the platform 6 on the base 1. Multiple positioning structures are installed through the T-shaped grooves of the platform 6. The hydraulic cylinder 5 is selected from the HSG series engineering cylinders with a rated pressure of 21 MPa. The material of the wedge-shaped pressing block 9 is 42CrMo, and the surface nitriding treatment layer depth is 0.3 mm. Through the operation of the hydraulic cylinder 5, the connecting rod 8 is driven to move horizontally closer to or away from each other, thereby driving the wedge-shaped pressing block 9 to move horizontally, clamping the automotive subframe positioned by the positioned structure, and using the wedge shape of the wedge-shaped pressing block 9 to convert the horizontal thrust into a vertical downward pressure, thereby locking the automotive subframe on the platform 6. Moreover, the movement of the connecting rod 8 can drive the second slider 10 to move inside the guide rail 7, thereby providing a certain support for the connecting rod 8 and making its movement more stable, thus preventing the automotive subframe from generating displacement. At the same time, by adjusting the operation of the heat dissipation structure, according to the processing requirements, the platform 6 is driven to rotate around the second rotating shaft 16 as the center, thereby driving the automotive subframe to rotate around the second rotating shaft 16 as the center, further facilitating multi-angle machining of the automotive subframe. And by adjusting the operation of the heat dissipation structure, the oil temperature of the hydraulic cylinder 5 is dissipated, preventing the temperature from rising when the hydraulic cylinder 5 works under high load for a long time, resulting in a decrease in the viscosity of the hydraulic oil and affecting the performance and efficiency of the hydraulic system, improving the service life of the device. Through the setting of the pressure sensor 13, the pressure of the wedge-shaped pressing block 9 on the automotive subframe is sensed in real time, thereby controlling the operation of the hydraulic cylinder 5 according to the requirements and adjusting the pressure of the wedge-shaped pressing block 9 on the automotive subframe, so as to more accurately cooperate with the reference holes of the automotive subframe and achieve high-precision positioning, thus solving the problem that the traditional locking and positioning device usually uses a pneumatic floating fixture, which uses compressed air as power and is equipped with a rubber buffer pad. With long-term use, the rubber buffer pad can no longer provide stable support and positioning for the automotive subframe, resulting in a slight displacement of the workpiece and affecting the machining accuracy.

[0026] Please refer to the attached Figure 1 - attached Figure 3, one side of the wedge-shaped pressing block 9 is provided with an inclined surface with an inclined surface angle of 15°. The outer circumferential wall of the second rotating shaft 16 is fixedly connected with a second gear 17. A wind duct 21 is arranged inside the platform 6, and heat dissipation holes 22 are evenly opened on one side of the wind duct 21 of the platform 6; a connecting block 39 is fixedly connected to the top of the inner wall of the wind duct 21 of the platform 6. One side of the hydraulic cylinder 5 is provided with an oil storage pipe 20. One side of the oil storage pipe 20 is fixedly connected to one side of the connecting block 39, and the oil storage pipe 20 is located inside the wind duct 21 of the platform 6.

[0027] Specifically, through the inclined surface on one side of the wedge-shaped pressing block 9, the horizontal thrust is converted into a vertical downward pressure, which is convenient for locking the automotive subframe. Through the settings of the wind duct 21 and the heat dissipation holes 22, it is convenient for the oil storage pipe 20 to dissipate heat. Through the connection between the connecting block 39 and the oil storage pipe 20, the oil storage pipe 20 is limited inside the wind duct 21.

[0028] Please refer to the attached Figure 2 - attached Figure 6 , the adjustable heat dissipation structure includes a U-shaped mounting plate 18. The top of the U-shaped mounting plate 18 is fixedly connected to the bottom of the platform 6. One side of the U-shaped mounting plate 18 is fixedly provided with a first motor 19. The output end of the first motor 19 is fixedly connected with a first rotating shaft 29. The top end of the first rotating shaft 29 is rotatably connected with an air box 23. The top of the air box 23 is fixedly connected to one side of the platform 6. The bottom of the air box 23 is rotatably connected to the middle of the first rotating shaft 29; the bottom of the air box 23 is evenly provided with air inlets 30. A filter plate 25 is arranged inside the air inlets 30 of the air box 23. An air outlet 31 is opened at the top of the air box 23. The air outlet 31 of the air box 23 is communicated with the wind duct 21 of the platform 6. The outer circumferential wall of the first rotating shaft 29 is evenly fixedly connected with fan blades 32. The fan blades 32 are located inside the air box 23. The bottom of the air box 23 is fixedly connected with an electric push rod 26. The output end of the electric push rod 26 is fixedly connected with a first slider 34.

[0029] Specifically, through the setting of the U-shaped mounting plate 18, the first motor 19 is installed on the platform 6. Through the operation of the first motor 19, the first rotating shaft 29 is driven to rotate. Through the connection between the air box 23 and the platform 6, the air box 23 is limited on the platform 6, and the air outlet 31 is communicated with the wind duct 21. Through the rotation of the first rotating shaft 29, the fan blades 32 are driven to operate inside the air box 23, so as to suck the outside air into the air box 23. Through the setting of the filter plate 25, the air entering the air box 23 is filtered, and the filtered air enters the wind duct 21 to dissipate heat from the oil storage pipe 20 inside the wind duct 21. Through the connection between the electric push rod 26 and the air box 23, the electric push rod 26 is installed on the air box 23. Through the operation of the electric push rod 26, the first slider 34 is driven to move vertically.

[0030] Please refer to the attached Figure 3 - attached Figure 6, on one side of the first rotating shaft 29, limiting strips 28 are evenly and fixedly connected. At both ends of the limiting strips 28, limiting rings 27 are fixedly connected. The middle parts of the limiting rings 27 are fixedly connected to the outer wall of the first rotating shaft 29. A first gear 24 is slidably connected to the outer wall of the limiting strip 28. A T-shaped annular chute 33 is opened at the top of the first gear 24; the outer wall of the first slider 34 is slidably connected in the T-shaped annular chute 33 of the first gear 24. The inner wall of the first gear 24 is slidably connected to the outer wall of the first rotating shaft 29. The tooth end of the first gear 24 can be meshed and connected with the tooth end of the second gear 17.

[0031] Specifically, the first slider 34 is limited by the T-shaped annular chute 33, and the first slider 34 slides in the T-shaped annular chute 33. Thus, through the movement of the first slider 34, the first gear 24 is driven to slide on the outer walls of the limiting strip 28 and the first rotating shaft 29. Through the setting of the limiting ring 27, the movement of the first gear 24 is limited. And through the limitation of the first gear 24 by the limiting strip 28, when the first rotating shaft 29 rotates, the first gear 24 can be driven to rotate. Since the tooth end of the first gear 24 can be meshed and connected with the tooth end of the second gear 17, thus according to the processing requirements, through the operation of the electric push rod 26, the first slider 34 is driven to move, so that the first gear 24 moves on the limiting strip 28 and the first rotating shaft 29, adjusting the position of the first gear 24 to mesh it with the second gear 17. Thus, through the force generated by the meshing, the first motor 19 and the U-shaped mounting plate 18 are driven to rotate around the second rotating shaft 16, and further the platform 6 is driven to rotate around the second rotating shaft 16, thereby adjusting the processing angle of the automotive subframe and facilitating multi-angle processing of it.

[0032] Please refer to the appendix Figure 1 、appendix Figure 2 、appendix Figure 7 , the rotating structure includes a base 3. A mounting plate 4 is fixedly connected to the top of the base 3. A cavity is opened inside the mounting plate 4. A second motor 35 is fixedly arranged on one side of the inner wall of the mounting plate 4. A fourth rotating shaft 15 is rotatably connected inside the mounting plate 4. The relatively close ends of the fourth rotating shafts 15 are fixedly connected to the relatively far sides of the connecting plate 2; a fourth gear 14 is fixedly connected to the circumferential outer wall of the fourth rotating shaft 15. The tooth end of the fourth gear 14 is meshed and connected with a third gear 37. The middle part of the third gear 37 is fixedly connected to a third rotating shaft 36. One end of the third rotating shaft 36 is rotatably connected to one side of the inner wall of the mounting plate 4. The other end of the third rotating shaft 36 is fixedly arranged at the output end of the second motor 35.

[0033] Specifically, through the setting of the base 3, the device is supported. The second motor 35 is installed through the cavity of the mounting plate 4. By the operation of the second motor 35, the third rotating shaft 36 rotates inside the mounting plate 4, thereby driving the third gear 37 to rotate. Through the meshing of the third gear 37 and the fourth gear 14, the fourth gear 14 rotates around the fourth rotating shaft 15, and then the fourth rotating shaft 15 rotates inside the mounting plate 4. Thus, the connecting plate 2 rotates around the fourth rotating shaft 15 on one side of the mounting plate 4, driving the base 1 and various structures on the base 1 to rotate around the fourth rotating shaft 15, and then the automotive subframe on the platform 6 rotates around the fourth rotating shaft 15, thereby adjusting the processing angle of the automotive subframe and facilitating multi-angle processing of the automotive subframe.

[0034] Please refer to the attached Figure 1 - attached Figure 3 、attached Figure 8 , the positioning structure includes a positioning pin 11. A bushing 12 is fixedly connected to the bottom of the positioning pin 11. A bolt 38 is fixedly connected to the bottom of the bushing 12. The outer wall of the bolt 38 is threadedly connected inside the T-shaped groove of the platform 6.

[0035] Specifically, the positioning pin 11 is made of YG8 hard alloy with a hardness ≥ 89HRA. Through the setting of the positioning pin 11, it is thus matched with the reference hole of the automotive subframe on the platform 6 to position the automotive subframe. The positioning pin 11 is limited by the bushing 12, and the bushing 12 is installed inside the T-shaped groove of the platform 6 through the bolt 38, and then the positioning pin 11 is installed on the surface of the platform 6.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A workpiece locking and positioning device for a horizontal machining center of an automobile subframe, comprising a base (1), characterized in that: Both sides of the base (1) are fixedly connected to connecting plates (2), and the side of the connecting plate (2) that is away from the connecting plate (2) is rotatably connected to a rotating structure. A second rotating shaft (16) is fixedly connected to the middle of the base (1), and the top of the second rotating shaft (16) is rotatably connected to a platform (6). The top of the platform (6) is evenly provided with T-shaped grooves, and a positioning structure is arranged inside the T-shaped groove of the platform (6). The upper surface of the platform (6) is symmetrically provided with guide rails (7). Both sides of the platform (6) are fixedly connected to hydraulic cylinders (5), and the output end of the hydraulic cylinder (5) is fixedly provided with a connecting rod (8), and the opposite side of the connecting rod (8) is symmetrically fixedly connected to a wedge-shaped pressure block (9), and a pressure sensor (13) is arranged on one side of the wedge-shaped pressure block (9). The bottom of the connecting rod (8) is symmetrically fixedly connected to a second slider (10), and the bottom of the second slider (10) is arranged inside the guide rail (7). The bottom of the platform (6) is fixedly connected to an adjustable heat dissipation structure.

2. The workpiece locking and positioning device for a horizontal machining center of an automobile subframe according to claim 1 is characterized in that: A slope with a slope angle of 15° is provided on one side of the wedge-shaped pressure block (9); a second gear (17) is fixedly connected to the circumferential outer wall of the second rotating shaft (16); an air duct (21) is provided inside the platform (6); and heat dissipation holes (22) are evenly provided on one side of the air duct (21) of the platform (6).

3. The workpiece locking and positioning device for a horizontal machining center of an automobile subframe according to claim 1 is characterized in that: A connecting block (39) is fixedly connected to the top of the inner wall of the air duct (21) of the platform (6); an oil storage pipe (20) is provided on one side of the hydraulic cylinder (5); one side of the oil storage pipe (20) is fixedly connected to one side of the connecting block (39); and the oil storage pipe (20) is located in the air duct (21) of the platform (6).

4. The workpiece locking and positioning device for a horizontal machining center of an automobile subframe according to claim 1 is characterized in that: The heat dissipation regulating structure comprises a U-shaped mounting plate (18), the top of the U-shaped mounting plate (18) being fixedly connected to the bottom of the platform (6), a first motor (19) being fixedly arranged on one side of the U-shaped mounting plate (18), an output end of the first motor (19) being fixedly connected to a first rotating shaft (29), a top end of the first rotating shaft (29) being rotatably connected to a bellows (23), a top of the bellows (23) being fixedly connected to one side of the platform (6), and a bottom of the bellows (23) being rotatably connected to a middle portion of the first rotating shaft (29).

5. The workpiece locking and positioning device for a horizontal machining center of an automobile subframe according to claim 4 is characterized in that: The bottom of the bellows (23) is evenly provided with air inlets (30), a filter plate (25) is arranged inside the air inlet (30) of the bellows (23), the top of the bellows (23) is provided with an air outlet (31), the air outlet (31) of the bellows (23) is connected to the air duct (21) of the platform (6), the circumferential outer wall of the first rotating shaft (29) is evenly fixedly connected with fan blades (32), the fan blades (32) are located in the bellows (23), the bottom of the bellows (23) is fixedly connected with an electric push rod (26), and the output end of the electric push rod (26) is fixedly connected with a first slider (34).

6. The workpiece locking and positioning device for a horizontal machining center of an automobile subframe according to claim 5 is characterized in that: One side of the first rotating shaft (29) is evenly fixedly connected to a limit strip (28), both ends of the limit strip (28) are fixedly connected to limit rings (27), the middle portion of the limit ring (27) is fixedly connected to the outer wall of the first rotating shaft (29), the outer wall of the limit strip (28) is slidably connected to a first gear (24), and a T-shaped annular sliding groove (33) is provided on the top of the first gear (24).

7. The workpiece locking and positioning device for a horizontal machining center of an automobile subframe according to claim 5 is characterized in that: The outer wall of the first sliding block (34) is slidably connected to the T-shaped annular sliding groove (33) of the first gear (24), the inner wall of the first gear (24) is slidably connected to the outer wall of the first rotating shaft (29), and the tooth end of the first gear (24) can be meshed with the tooth end of the second gear (17).

8. The workpiece locking and positioning device for a horizontal machining center of an automobile subframe according to claim 1 is characterized in that: The rotating structure comprises a base (3), a mounting plate (4) is fixedly connected to the top of the base (3), a cavity is provided inside the mounting plate (4), a second motor (35) is fixedly arranged on one side of the inner wall of the mounting plate (4), a fourth rotating shaft (15) is rotatably connected inside the mounting plate (4), and the fourth rotating shaft (15) is fixedly connected to the side of the connecting plate (2) that is away from the connecting plate (2) in a moving manner that is close to the connecting plate (2).

9. The workpiece locking and positioning device for a horizontal machining center of an automobile subframe according to claim 8, characterized in that: The circumferential outer wall of the fourth rotating shaft (15) is fixedly connected to a fourth gear (14), a tooth end of the fourth gear (14) is meshingly connected to a third gear (37), a middle portion of the third gear (37) is fixedly connected to a third rotating shaft (36), one end of the third rotating shaft (36) is rotatably connected to one side of the inner wall of the mounting plate (4), and the other end of the third rotating shaft (36) is fixedly arranged at the output end of the second motor (35).

10. The workpiece locking and positioning device for a horizontal machining center of an automobile subframe according to claim 1, characterized in that: The positioning structure comprises a positioning pin (11), the bottom of the positioning pin (11) is fixedly connected to a bushing (12), the bottom of the bushing (12) is fixedly connected to a bolt (38), and the outer wall of the bolt (38) is threadedly connected to the inside of the T-slot of the platform (6).

Images