Polishing equipment for aluminum alloy frame production and machining

Abstract

The invention discloses polishing equipment for aluminum alloy frame production and machining, and relates to the technical field of aluminum alloy frame machining, and the polishing equipment comprises a workbench, a positioning clamp used for fixing and supporting a frame cross beam, an arc section polishing mechanism, a plane polishing mechanism and a lifting supporting mechanism; the arc section grinding mechanism comprises a main servo motor and a rotary grinding mechanism, and the main servo motor is used for driving the rotary grinding mechanism to grind along the arc part of the end part of the frame cross beam; and the plane grinding mechanism is used for grinding plane parts on the two sides of the end part of the frame cross beam. According to the device, the first grinding columns which are distributed in pairs are used for grinding along the circular arc curved surface part of the end part of the flat frame cross beam, and the flat frame cross beam can longitudinally move to extrude and pass through the extruding columns which are distributed in pairs; and the semi-circle of second grinding columns distributed on the extrusion cylinders can effectively grind the plane parts on the two sides of the frame cross beam, manual treatment is not needed, and the grinding efficiency and effect are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy frame processing, and particularly relates to a grinding device for the production and processing of aluminum alloy frames. Background Art

[0002] Aluminum alloy frames are important components for manufacturing various types of vehicles and are widely used due to their light weight, high strength, corrosion resistance, etc. Especially for bicycle frames, in order to pursue light weight and rigidity, aluminum alloy is used to make the frame. Generally, during the process of making an aluminum alloy bicycle frame, grinding is often required to facilitate the assembly and processing of components.

[0003] Existing aluminum alloy bicycle frames mainly include a cross beam, a head frame, and a tail frame. The two ends of the cross beam are respectively used for assembling and connecting the head frame and the tail frame. To ensure the assembly and connection effect, generally, the ends of the cross beam need to be ground. Because during the processing and production of the cross beam part of the frame, due to operations such as cutting and extrusion, it is very easy for the ends of the cross beam to appear some burrs and other uneven phenomena. Generally, manual operation of an electric grinding tool is mainly relied on to grind the ends of the cross beam.

[0004] The deficiencies of existing aluminum alloy frame grinding devices are as follows: When grinding the ends of the cross beam of an existing aluminum alloy bicycle frame, manual operation of an electric grinding tool is mainly relied on for grinding. The grinding operation is not convenient enough and the grinding efficiency is low. Although there are also relevant existing devices that do not require manual grinding operation, for example, a Chinese patent with the publication number CN117444743B discloses a burr grinding machine for the frame of a children's balance bike. However, this device mainly relies on circular motion to perform relevant grinding operations on a circular tube-shaped cross beam, while many existing bicycle frames have cross beams that are not circular tube-shaped but flat square tube-shaped, and there will be arc-shaped curved surface parts and flat surface parts at their ends. It is more difficult to complete grinding with the above similar devices, and the grinding effect is not good. Summary of the Invention

[0005] The purpose of the present invention is to provide a grinding device for the production and processing of aluminum alloy frames to solve the technical problem in the prior art that the aluminum alloy frame grinding device is not convenient for grinding flat bicycle cross beams.

[0006] The technical problems to be solved by the present invention can be achieved through the following technical solutions:

[0007] A grinding device for the production and processing of aluminum alloy frames, used for grinding flat frame cross beams, includes a workbench, a positioning fixture for fixedly supporting the frame cross beam, and further includes:

[0008] Arc segment grinding mechanism and plane grinding mechanism; the arc segment grinding mechanism includes a main servo motor and a rotary grinding mechanism, the main servo motor is used to drive the rotary grinding mechanism to grind along the arc part at the end of the frame crossbeam; the plane grinding mechanism is used to grind the two side plane parts at the end of the frame crossbeam; the plane grinding mechanism includes a grinding component and an elastic reciprocating idler wheel mechanism, and there are two groups of the elastic reciprocating idler wheel mechanism and the grinding component symmetrically distributed, and the grinding component is correspondingly distributed on the elastic reciprocating idler wheel mechanism;

[0009] Lifting support mechanism, the lifting support mechanism is used to support the positioning fixture, and a transmission mechanism is cooperatively arranged between the main servo motor and the lifting support mechanism.

[0010] As a further solution of the present invention: a main support frame is fixedly connected to the workbench, the main servo motor is fixedly connected to the main support frame, a transmission shaft is fixedly connected to the main shaft end of the main servo motor, and first transmission wheels are arranged on the top of both the transmission shaft and the main support frame. The transmission shaft is coaxially and fixedly connected to the corresponding first transmission wheel, and a first transmission belt is cooperatively connected between the two first transmission wheels, and rotary grinding mechanisms are cooperatively connected to both of the first transmission wheels.

[0011] As a further solution of the present invention: the two rotary grinding mechanisms are symmetrically distributed up and down, and both include an arc connecting plate, a first grinding column and a spacing adjusting mechanism. One side of the arc connecting plate is fixedly connected with a mounting bracket, the mounting bracket is cooperatively connected with the corresponding first transmission wheel, the first grinding column is arranged inside the arc connecting plate, and a driving motor for driving the first grinding column to rotate is arranged on one side of the arc connecting plate. The spacing adjusting mechanism is used to adjust the spacing between the first grinding column and the arc connecting plate.

[0012] As a further solution of the present invention: the spacing adjusting mechanism includes a lifting plate and an adjusting bolt. The adjusting bolt is rotatably connected to the arc connecting plate, the adjusting bolt penetrates through one end of the lifting plate, and the adjusting bolt is threadedly connected to the lifting plate. The other end of the lifting plate is connected to the driving motor, and a limiting guide rod penetrating through the lifting plate is fixedly connected to the arc connecting plate.

[0013] As a further solution of the present invention: the lifting support mechanism includes a first elastic telescopic support rod and a support guide rail. The support guide rail is fixedly connected to the workbench. One end of the first elastic telescopic support rod is slidably connected to the support guide rail, and the other end is fixedly connected to the positioning fixture. And one end of the first elastic telescopic support rod close to the support guide rail is cooperatively connected to the transmission mechanism. A limiting block is fixedly connected to one side of the support guide rail away from the arc segment grinding mechanism.

[0014] As a further solution of the present invention: The transmission mechanism includes a second elastic telescopic support rod, an inclined plane block, a slider and a threaded pushing mechanism. The slider is slidably connected to the workbench. One end of the second elastic telescopic support rod is fixedly connected to the slider, and the other end is fixedly connected to the bottom of the first elastic telescopic support rod. A top frame is fixedly connected to the second elastic telescopic support rod near the slider. The inclined plane block is fixedly connected to the positioning fixture, and the inclined plane of the inclined plane block is aligned and matched with the end of the top frame. The threaded pushing mechanism is cooperatively connected between the transmission shaft and the slider.

[0015] As a further solution of the present invention: The threaded pushing mechanism includes a threaded sleeve, a threaded rod, a first transmission gear, a second transmission gear and a ratchet and pawl mechanism. The ratchet and pawl mechanism is cooperatively connected to the transmission shaft. The first transmission gear is coaxially cooperatively connected to the ratchet and pawl mechanism. The second transmission gear is rotatably connected to the main support frame, and the second transmission gear meshes with the first transmission gear. Second transmission wheels are arranged at the bottoms of the second transmission gear and the main support frame, and a second transmission belt is cooperatively connected between the two second transmission wheels. The threaded sleeve is coaxially fixedly connected to the second transmission wheel at the bottom of the main support frame. One end of the threaded rod is threadedly connected inside the threaded sleeve, and the other end is fixedly connected to the slider.

[0016] As a further solution of the present invention: The ratchet and pawl mechanism includes a fixed ring, a ratchet ring and a pawl body. The fixed ring is fixedly connected to the main support frame. The ratchet ring is rotatably connected inside the fixed ring. The transmission shaft penetrates through the ratchet ring. The pawl body is movably connected to the side wall of the transmission shaft through a return hinge, and the pawl body cooperates with the ratchet ring.

[0017] As a further solution of the present invention: Each of the two elastic reciprocating idler wheel mechanisms includes a sub-support frame, a guide sleeve, a sliding plate and an extrusion cylinder. The sub-support frame is fixedly connected to the workbench. The guide sleeve is fixedly connected to the sub-support frame. The sliding plate horizontally penetrates through the guide sleeve. The extrusion cylinder is fixedly connected to one end of the sliding plate away from the sub-support frame. A limiting spring is fixedly connected between the sliding plate and the sub-support frame. The two extrusion cylinders are in contact with each other in the initial state. The grinding assemblies are distributed on the extrusion cylinders.

[0018] As a further solution of the present invention: Each of the two grinding assemblies includes a sub-servo motor, a main gear, a sub-gear and a second grinding column. The sub-servo motor is correspondingly fixedly connected to the extrusion cylinder. The main gear is fixedly connected to the main shaft end of the sub-servo motor. A plurality of second grinding columns are provided and are evenly distributed in a semi-circle on the circular surface at one end of the extrusion cylinder. Each second grinding column is rotatably connected to the corresponding extrusion cylinder. A plurality of sub-gears are provided and are coaxially fixedly connected corresponding to the second grinding columns. Each sub-gear meshes with the main gear.

[0019] Advantages of the present invention:

[0020] 1. The present invention relies on the paired first grinding columns to grind along the arc-shaped curved surface part at the end of the flat frame crossbeam, and can also longitudinally move and squeeze the flat frame crossbeam through the paired extrusion cylinders. During the passing process, the semi-circular second grinding columns distributed on the extrusion cylinders can effectively grind the flat parts on both sides of the frame crossbeam, thereby effectively grinding the flat frame crossbeam without manual handling, improving the grinding efficiency and effect.

[0021] 2. The main servo motor of the present invention drives the reciprocating swing of the paired arc-shaped connecting plates through the cooperation of the first transmission wheel and the transmission belt, which is convenient for driving the distributed first grinding columns to grind along the arc-shaped curved surface part of the frame crossbeam. At the same time, the main servo motor also intermittently drives the rotation of the threaded sleeve during the swing process through the cooperation of the ratchet and pawl. The threaded sleeve then makes the cooperating threaded rod linearly displace to push the slider, and the slider drives the positioning fixture to have a transverse movement, so as to facilitate the separation of the frame crossbeam from between the paired first grinding columns, so as to facilitate the subsequent grinding of the flat part without separately adjusting the position of the frame crossbeam.

[0022] 3. After the frame crossbeam is separated from the first grinding column, the main servo motor keeps the transmission shaft rotating in a fixed direction, so as to continuously drive the rotation of the threaded sleeve through the cooperation of the second transmission wheel and the second transmission belt. In this way, the threaded rod continuously pushes the slider forward. Since the first elastic telescopic support rod connected to the positioning fixture slides along the support rail to the corresponding position and is restricted by the limit block and cannot continue to slide, the advancing slider then compresses the second elastic telescopic support rod. The compressed second elastic telescopic support rod drives the top frame to squeeze the inclined block, thereby generating a vertical component force, so that the positioning fixture drives the frame crossbeam to compress the first elastic telescopic support rod and realize descent, so as to facilitate extrusion through the second grinding columns distributed on the extrusion cylinders and complete the grinding of the flat part, that is, continuously complete the grinding operations at different positions and improve the operation convenience.

[0023] 4. The multiple second grinding columns distributed on the extrusion cylinders are distributed along the arc edge of the circular surface at one end of the extrusion cylinder. When the frame crossbeam is extruded through, the flat part of the frame crossbeam and the connection position between the flat part and the arc part can be effectively ground by the second grinding columns at different positions, effectively completing the grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The following further describes the present invention with reference to the drawings.

[0025] Figure 1 is the overall structural schematic diagram of the present invention;

[0026] Figure 2It is a schematic diagram of the structure of the extruded cylinder and the auxiliary support frame in the present invention;

[0027] Figure 3 It is a schematic diagram of the structure in which the frame crossbeam is cross-mounted on the extruded cylinder in the present invention;

[0028] Figure 4 It is a schematic structural diagram of the arc connecting plate and the first transmission wheel in the present invention;

[0029] Figure 5 It is a structural schematic diagram of the first grinding column and the arc connecting plate in the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the transmission shaft and the ratchet ring in the present invention;

[0031] Figure 7 It is a schematic structural diagram of the sliding block and the first elastic telescopic support rod in the present invention;

[0032] Figure 8 It is a schematic diagram of the state when the sliding block advances to cause the frame crossbeam to descend in the present invention.

[0033] In the figure: 1, workbench; 2, frame crossbeam; 3, extrusion cylinder; 4, electric telescopic rod; 5, fixed curved pressure plate; 6, positioning plug; 7, first elastic telescopic support rod; 8, second elastic telescopic support rod; 9, support guide rail; 10, inclined block; 11, slider; 12, top frame; 13, extrusion roller; 14, limit block; 15, threaded sleeve; 16, threaded rod; 17, main support frame; 18, main servo motor; 19, second grinding column; 20, main gear; 21, auxiliary servo motor; 22, guide sleeve; 23. Slide plate; 24. Limit spring; 25. Auxiliary support frame; 26. Arc connecting plate; 27. Auxiliary gear; 28. Second transmission belt; 29. ​​Second transmission wheel; 30. Second transmission gear; 31. First transmission gear; 32. Fixed ring; 33. First transmission wheel; 34. First transmission belt; 35. Driving motor; 36. First grinding column; 37. Square rod; 38. Mounting frame; 39. Lifting plate; 40. Limit guide rod; 41. Adjusting bolt; 42. Ratchet ring; 43. Ratchet body; 44. Transmission shaft. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] likeFigures 1 - 8 As shown in the figure, a grinding device for the production and processing of aluminum alloy frames is used to grind bicycle frames made of aluminum alloy. Here, the bicycle frames include frames of mountain bikes, children's balance bikes, and other models, and are used to grind the burr protrusions at the port positions of the flat frame crossbeam 2 to avoid affecting the installation and connection with other accessories. The device includes a workbench 1 and a positioning fixture for fixedly supporting the frame crossbeam 2. The positioning fixture is arranged on one side of the workbench 1 and is used to horizontally support the frame crossbeam 2 on the workbench 1. The device also includes an arc-section grinding mechanism, a plane grinding mechanism, and a lifting support mechanism; the arc-section grinding mechanism is arranged on the side of the workbench 1 away from the positioning fixture, and the arc-section grinding mechanism includes a main servo motor 18 and a rotary grinding mechanism. The main servo motor 18 is used to drive the rotary grinding mechanism to deflect and grind along the arc part at the end of the frame crossbeam 2; the plane grinding mechanism is used to grind the two side plane parts at the end of the frame crossbeam 2; the plane grinding mechanism includes a grinding component and an elastic reciprocating roller mechanism. There are two sets of elastic reciprocating roller mechanisms and grinding components symmetrically distributed, and the grinding components are correspondingly distributed on the elastic reciprocating roller mechanisms. After one end of the frame crossbeam 2 is fixedly supported by the positioning fixture, the other end is placed between the two sets of elastic reciprocating roller mechanisms;

[0036] The lifting support mechanism is used to support the positioning fixture. A transmission mechanism is cooperatively arranged between the main servo motor 18 and the lifting support mechanism. The transmission mechanism is used to convert the rotational motion generated by the main servo motor 18 into linear motion and drive the lifting support mechanism to drive the positioning fixture to lift and lower.

[0037] When one end of the flat frame crossbeam 2 is fixed by the positioning fixture, the other end is placed between the two sets of elastic reciprocating roller mechanisms, and the arc part is on the upper and lower sides. First, rely on the main servo motor 18 to drive the arc-section grinding mechanism to grind the arc part at the end of the frame crossbeam 2, and then rely on the transmission mechanism to convert the rotational motion generated by the main servo motor 18 into linear motion, so that the lifting support mechanism drives the positioning fixture to descend, thus driving the frame crossbeam 2 to descend. During this process, the frame crossbeam 2 begins to squeeze down through the two sets of elastic reciprocating roller mechanisms. During the squeezing process, since the elastic reciprocating roller mechanism always adheres to the outer wall of the frame crossbeam 2 by elastic force, the grinding components distributed on the elastic reciprocating roller mechanisms can grind the plane part passed by the frame crossbeam 2 to complete the grinding operation.

[0038] In some specific implementation schemes, in combination with Figure 1 and Figure 4As shown in the figure, a main support frame 17 is vertically and fixedly connected to the workbench 1. The main servo motor 18 is fixedly connected to the main support frame 17. The main shaft end of the main servo motor 18 is fixedly connected to a transmission shaft 44. First transmission wheels 33 are provided at the top of both the transmission shaft 44 and the main support frame 17. The transmission shaft 44 is coaxially and fixedly connected to the corresponding first transmission wheel 33. The main support frame 17 is rotatably connected to the corresponding first transmission wheel 33 through a rotating shaft. A first transmission belt 34 is connected in cooperation between the two first transmission wheels 33. Rotating grinding mechanisms are connected in cooperation to both of the first transmission wheels 33.

[0039] Among them, in combination with Figure 4 and Figure 5 As shown, the two rotating grinding mechanisms are symmetrically distributed up and down, and each includes an arc connecting plate 26, a first grinding column 36, and a spacing adjusting mechanism. One side of the arc connecting plate 26 is fixedly connected to a mounting frame 38. The mounting frame 38 is preferably a V-shaped structure. The mounting frame 38 is connected in cooperation with the corresponding first transmission wheel 33. The first grinding column 36 is disposed in cooperation inside the arc connecting plate 26. And a driving motor 35 for driving the first grinding column 36 to rotate is provided on one side of the arc connecting plate 26. The spacing adjusting mechanism is used to adjust the spacing between the first grinding column 36 and the arc connecting plate 26.

[0040] Among them, the spacing adjusting mechanism includes a lifting plate 39 and an adjusting bolt 41. The adjusting bolt 41 is rotatably connected to the arc connecting plate 26. One end of the adjusting bolt 41 penetrates through the lifting plate 39, and the adjusting bolt 41 is threadedly connected to the lifting plate 39. The other end of the lifting plate 39 is connected to the driving motor 35. A limiting guide rod 40 penetrating through the lifting plate 39 is fixedly connected to the arc connecting plate 26. The lifting plate 39 can slide up and down relative to the limiting guide rod 40. When the end of the vehicle frame cross beam 2 is between the upper and lower arc connecting plates 26, at this time, the adjusting bolt 41 can be rotated so that the lifting plate 39 slides up and down relative to the limiting guide rod 40, thereby driving the driving motor 35 and the first grinding column 36 to adjust their positions up and down, so that the first grinding column 36 effectively fits on the surface layer of the arc part of the vehicle frame cross beam 2. It should be noted that the center positions of the two first transmission wheels 33 and the relative positions of the arc connecting plates 26 in this solution are designed according to the dimensions corresponding to the arc part of the vehicle frame cross beam 2 to be processed and ground, that is, for grinding and processing a flat vehicle frame cross beam 2 with a certain fixed specification size. And in order to ensure that the first grinding column 36 can effectively fit and complete grinding along the surface layer of the arc part of the vehicle frame cross beam 2 during the deflection of the first transmission wheel 33, an elastic telescopic connecting piece can be provided between the lifting plate 39 and the driving motor 35, that is, connected by a telescopic connecting rod, and a spring is installed between the two ends of the telescopic connecting rod.

[0041] In addition, it should be noted that square rods 37 are coaxially and fixedly connected to the centers of the two first driving wheels 33, and the square rods 37 penetrate through the corresponding mounting brackets 38. The mounting brackets 38 can slide relative to the square rods 37 but cannot deflect relative to them. Moreover, fastening bolts for position fixation are also installed on the mounting brackets 38. When the vehicle frame crossbeam 2 is erected, the two arc connecting plates 26 can first slide away from the vehicle frame crossbeam 2 relative to the square rods 37 by relying on the mounting brackets 38 to ensure that the vehicle frame crossbeam 2 can be erected to the designated position, and then slide back so that the arc connecting plates 26 cover the arc position of the vehicle frame crossbeam 2. Finally, the position of the mounting bracket 38 relative to the square rod 37 can be fixed by the fastening bolts.

[0042] In some specific implementation schemes, as shown in combination with Figure 1 and Figure 2 , the lifting support mechanism includes a first elastic telescopic support rod 7 and a support guide rail 9. The support guide rail 9 is horizontally and fixedly connected to the workbench 1, and the support guide rail 9 is directly below the positioning fixture. One end of the first elastic telescopic support rod 7 is slidably connected to the support guide rail 9, and the other end is fixedly connected to the positioning fixture. It should be noted that here the first elastic telescopic support rod 7 includes a telescopic rod and springs connected to both ends of the telescopic rod. When the first elastic telescopic support rod 7 contracts, it generates a resilience force; and one end of the first elastic telescopic support rod 7 close to the support guide rail 9 is connected to the transmission mechanism in a cooperative manner. A limiting block 14 is fixedly connected to one side of the support guide rail 9 away from the arc segment grinding mechanism.

[0043] Among them, as shown in combination with Figure 1 and Figure 7 , the transmission mechanism includes a second elastic telescopic support rod 8, an inclined block 10, a slider 11, and a threaded pushing mechanism. The slider 11 is slidably connected to the workbench 1. Specifically, a chute or a guide rail can be provided on the workbench 1 for sliding guidance. One end of the second elastic telescopic support rod 8 is fixedly connected to the slider 11, and the other end is fixedly connected to the bottom of the first elastic telescopic support rod 7. The second elastic telescopic support rod 8 is in a horizontal position, and its structure is the same as that of the first elastic telescopic support rod 7. A top frame 12 is fixedly connected to the position of the second elastic telescopic support rod 8 close to the slider 11, and a pressing roller 13 is installed at the end of the top frame 12. The inclined block 10 is fixedly connected to the positioning fixture through a connecting frame, and the inclined surface of the inclined block 10 is aligned and cooperated with the end of the top frame 12. The threaded pushing mechanism is cooperatively connected between the transmission shaft 44 and the slider 11.

[0044] Among them, as shown in combination with Figure 1 , Figure 4 and Figure 7As shown in the figure, the screw driving mechanism includes a screw sleeve 15, a screw rod 16, a first transmission gear 31, a second transmission gear 30 and a ratchet and pawl mechanism. The ratchet and pawl mechanism is cooperatively connected to a transmission shaft 44. The first transmission gear 31 is coaxially and cooperatively connected to the ratchet and pawl mechanism. The second transmission gear 30 is rotatably connected to a main support frame 17 through a rotating shaft, and the second transmission gear 30 meshes with the first transmission gear 31. Second transmission wheels 29 are provided at the bottoms of both the second transmission gear 30 and the main support frame 17, and a second transmission belt 28 is cooperatively connected between the two second transmission wheels 29. It should be noted that the second transmission gear 30 is coaxially and fixedly connected to the corresponding second transmission wheel 29, and the main support frame 17 is rotatably connected to the corresponding second transmission wheel 29 through a rotating shaft. The screw sleeve 15 is coaxially and fixedly connected to the second transmission wheel 29 at the bottom of the main support frame 17. One end of the screw rod 16 is threadedly connected to the inside of the screw sleeve 15, and the other end is fixedly connected to a slider 11.

[0045] Among them, as Figure 6 shown in the figure, the ratchet and pawl mechanism includes a fixed ring 32, a ratchet ring 42 and a pawl body 43. The fixed ring 32 is fixedly connected to the main support frame 17. The ratchet ring 42 is rotatably connected to the inside of the fixed ring 32. Specifically, an annular chute can be opened on the inner sidewall of the inner circle of the fixed ring 32, so that the ratchet ring 42 is slidably connected to the annular chute through a pair of pulleys. The first transmission gear 31 is fixedly connected to the ratchet ring 42 through a cross bar, and their axes coincide. And it should be noted that here the ratchet ring 42 is an annular body, and a circle of inclined grooves cooperating with the pawl body 43 are circumferentially distributed on the inner sidewall of its inner circle. The transmission shaft 44 passes through the ratchet ring 42. The pawl body 43 is movably connected to the sidewall of the transmission shaft 44 through a resilient hinge, and the pawl body 43 cooperates with the ratchet ring 42. Here, the connecting end of the pawl body 43 is cooperatively attached to the arc-shaped sidewall of the transmission shaft 44, and then one side of its connecting end is movably connected to the sidewall of the transmission shaft 44 through a resilient hinge.

[0046] When grinding the arc part at the end of the vehicle frame cross beam 2, first, the motor controller controls the main servo motor 18 to drive the transmission shaft 44 to rotate forward and backward repeatedly at a certain angle. The transmission shaft 44 drives the first grinding columns 36 distributed at the arc positions on the upper and lower sides of the end of the vehicle frame cross beam 2 through two first transmission wheels 33 to reciprocate back and forth along the arc part of the vehicle frame cross beam 2 to ensure the grinding effect. And during this process, due to the existence of the ratchet and pawl mechanism, when the transmission shaft 44 rotates Figure 6When the shown perspective rotates counterclockwise, the transmission shaft 44 drives the pawl body 43 to act effectively on the ratchet ring 42, causing the ratchet ring 42 to rotate counterclockwise within the fixed ring 32. And whenever the transmission shaft 44 rotates clockwise, the pawl body 43 cannot act effectively on the ratchet ring 42, thus preventing the ratchet ring 42 from reversing. During the rotation of the ratchet ring 42, it drives the first transmission gear 31 to rotate, and the first transmission gear 31 drives the second transmission gear 30 to rotate. The second transmission gear 30 drives the threaded sleeve 15 to rotate through the second transmission wheel 29 and the second transmission belt 28. Since the threaded rod 16 slides synchronously with the slider 11, during the rotation of the threaded sleeve 15, the threaded rod 16 gradually withdraws from the threaded sleeve 15, thereby pushing the slider 11 to slide forward. The slider 11 pushes the first elastic telescopic support rod 7 to slide along the support guide rail 9 through the second elastic telescopic support rod 8. At this time, the first elastic telescopic support rod 7 pushes the frame crossbeam 2 to gradually disengage from between the two first grinding columns 36 distributed in pairs through the positioning fixture. When the first elastic telescopic support rod 7 slides and abuts against the limit block 14 and cannot slide further, the grinding end of the frame crossbeam 2 just moves to the position where the planar grinding mechanism is located. And during this process, the second elastic telescopic support rod 8 does not undergo compressive deformation. At the same time, the top frame 12 moves synchronously with the inclined plane block 10 during this process, and there is no relative movement between the two. At this time, the main servo motor 18 can be controlled to drive the transmission shaft 44 to rotate counterclockwise in the direction of Figure 6 the shown perspective, or a pressure sensing switch can be installed on the limit block 14. After the first elastic telescopic support rod 7 abuts against the limit block 14, the pressure sensing switch generates a signal and feeds it back to the controller supporting the main servo motor 18. The controller sends a command to automatically control the main servo motor 18 to drive the transmission shaft 44 to rotate continuously in a fixed direction. In this way, the threaded rod 16 continues to push the slider 11 forward, and the slider 11 starts to compress the second elastic telescopic support rod 8 between it and the first elastic telescopic support rod 7. The end of the second elastic telescopic support rod 8 close to the slider 11 drives the top frame 12 forward. The end of the top frame 12 relies on the extrusion roller 13 to extrude the inclined plane of the inclined plane block 10. When a horizontal force acts on the inclined plane of the inclined plane block 10, a downward component force is generated in the vertical direction due to the horizontal force. Due to the existence of the first elastic telescopic support rod 7, the inclined plane block 10 drives the frame crossbeam 2 to descend through the positioning fixture, thus facilitating the completion of the planar part grinding.

[0047] In some specific implementation schemes, in combination with Figure 2 and Figure 3As shown in the figure, both groups of elastic reciprocating supporting wheel mechanisms include a secondary support frame 25, a guide sleeve 22, a sliding plate 23, and a pressing cylinder 3. The secondary support frame 25 is fixedly connected to the workbench 1. The guide sleeve 22 is fixedly connected to the secondary support frame 25 through a bracket. The sliding plate 23 penetrates the guide sleeve 22 horizontally, and relative sliding can occur between the two. The pressing cylinder 3 is fixedly connected to one end of the sliding plate 23 away from the secondary support frame 25. A compressible limit spring 24 is fixedly connected between the sliding plate 23 and the secondary support frame 25. The initial positions of the two pressing cylinders 3 are in contact with each other. The grinding components are distributed on the pressing cylinders 3.

[0048] Both groups of grinding components include a secondary servo motor 21, a main gear 20, a secondary gear 27, and a second grinding column 19. The secondary servo motor 21 is fixedly connected to the pressing cylinder 3 correspondingly, at the center position of the circular surface at one end of the pressing cylinder 3. The main gear 20 is fixedly connected to the main shaft end of the secondary servo motor 21. There are multiple second grinding columns 19, and they are evenly distributed in a semi-circle on the circular surface at one end of the pressing cylinder 3, on the side close to the center position of the connection line of the two pressing cylinders 3. Each second grinding column 19 is tangent to the axial extension surface of the cylindrical surface of the pressing cylinder 3. Each second grinding column 19 is rotatably connected to the corresponding pressing cylinder 3 through a rotating shaft. There are multiple secondary gears 27, and they are fixedly connected coaxially with the second grinding columns 19 correspondingly. Each secondary gear 27 meshes with the main gear 20.

[0049] When the secondary servo motor 21 drives the main gear 20 to rotate, the main gear 20 drives all the secondary gears 27 to rotate, so that all the second grinding columns 19 rotate. As Figure 8 shown, during the downward movement of the vehicle frame crossbeam 2, the vehicle frame crossbeam 2 squeezes and spreads apart the two pressing cylinders 3. The two pressing cylinders 3 slide horizontally away from each other respectively by relying on the corresponding sliding plates 23. During this process, the limit spring 24 is compressed to generate a resilience force, that is, the two pressing cylinders 3 can always be in contact with the vehicle frame crossbeam 2 by relying on the resilience force of the limit spring 24. Since there is a semi-circle of second grinding columns 19 distributed on one side of each pressing cylinder 3 close to the vehicle frame crossbeam 2, then during the downward extrusion of the vehicle frame crossbeam 2 through the two pressing cylinders 3, the flat parts on both sides can be ground by relying on the running second grinding columns 19. At the same time, since the second grinding columns 19 are distributed along the arc edge of the pressing cylinder 3, it can also make up for the grinding of the connection position between the arc part and the flat part of the vehicle frame crossbeam 2, prevent omissions, and ensure the grinding effect.

[0050] In some specific implementation schemes, such as Figure 1As shown, the positioning fixture includes a positioning plug 6 and a fixed curved pressing plate 5. The cross-section of the positioning plug 6 matches the cross-section of the vehicle frame cross beam 2. The positioning plug 6 is inserted into the inner side of one end of the vehicle frame cross beam 2 for positioning. The positioning plug 6 is fixedly connected with an electric telescopic rod 4 through a bracket. The telescopic direction of the electric telescopic rod 4 is downward. The fixed curved pressing plate 5 is fixedly connected to the telescopic end of the electric telescopic rod 4. When fixing the vehicle frame cross beam 2, the end of the vehicle frame cross beam 2 is sleeved on the positioning plug 6, and then the electric telescopic rod 4 is controlled to extend. The electric telescopic rod 4 drives the fixed curved pressing plate 5 to descend and abut against the vehicle frame cross beam 2 to fix and press it. The pressing surface of the fixed curved pressing plate 5 is provided with anti-slip teeth or anti-slip rubber pads.

[0051] To facilitate the understanding of this solution embodiment by those skilled in the art, the working principle of this solution will be briefly described in combination with a specific application scenario:

[0052] First, one end of the vehicle frame cross beam 2 is fixedly clamped by the positioning fixture. Then, the two arc connecting plates 26 slide relative to the square rod 37 by relying on the mounting frame 38 and cover the arc position of the vehicle frame cross beam 2. And the adjusting bolt 41 is rotated to make the lifting plate 39 slide up and down relative to the limit guide rod 40, thereby driving the driving motor 35 and the first grinding column 36 to adjust the position up and down, so that the first grinding column 36 effectively fits on the surface layer of the arc part of the vehicle frame cross beam 2. At this time, the vehicle frame cross beam 2 is also placed on the two pressing cylinders 3.

[0053] Then, the main servo motor 18 is controlled by the motor controller to drive the transmission shaft 44 to rotate forward and reverse repeatedly at a certain angle. The transmission shaft 44 drives the first grinding columns 36 distributed at the upper and lower arc positions of the end of the vehicle frame cross beam 2 to reciprocate back and forth along the arc part of the vehicle frame cross beam 2 through two first transmission wheels 33 respectively to ensure the grinding effect;

[0054] During this process, due to the existence of the ratchet and pawl mechanism, whenever the transmission shaft 44 rotates counterclockwise, the transmission shaft 44 will drive the pawl body 43 to act effectively on the ratchet ring 42, causing the ratchet ring 42 to rotate counterclockwise within the fixed ring 32. And whenever the transmission shaft 44 rotates clockwise, the pawl body 43 cannot act effectively on the ratchet ring 42, thus preventing the ratchet ring 42 from reversing. During the rotation of the ratchet ring 42, it drives the first transmission gear 31 to rotate, and the first transmission gear 31 drives the second transmission gear 30 to rotate. The second transmission gear 30 drives the threaded sleeve 15 to rotate through the second transmission wheel 29 and the second transmission belt 28. Since the threaded rod 16 slides synchronously with the slider 11, during the rotation of the threaded sleeve 15, the threaded rod 16 gradually withdraws from the threaded sleeve 15, thereby pushing the slider 11 to slide forward. The slider 11 pushes the first elastic telescopic support rod 7 to slide along the support guide 9 through the second elastic telescopic support rod 8. At this time, the first elastic telescopic support rod 7 drives the frame crossbeam 2 to gradually disengage from between the two first grinding columns 36 distributed in pairs through the positioning fixture;

[0055] When the first elastic telescopic support rod 7 slides and abuts against the limit block 14 and cannot slide further, the grinding end of the frame crossbeam 2 just moves to the position where the second grinding column 19 is located. And during this process, the second elastic telescopic support rod 8 does not undergo compressive deformation, and there is no relative movement between the top frame 12 and the inclined plane block 10. At this time, the main servo motor 18 can be controlled to drive the transmission shaft 44 to continuously rotate in the counterclockwise direction. In this way, the threaded rod 16 continues to push the slider 11 forward, and the slider 11 begins to compress the second elastic telescopic support rod 8 between it and the first elastic telescopic support rod 7. The end of the second elastic telescopic support rod 8 close to the slider 11 drives the top frame 12 forward. The end of the top frame 12 relies on the extrusion roller 13 to extrude the inclined plane of the inclined plane block 10. When the inclined plane of the inclined plane block 10 receives a lateral force, a downward component force is generated in the vertical direction due to the existence of the first elastic telescopic support rod 7. Due to the existence of the first elastic telescopic support rod 7, the inclined plane block 10 drives the frame crossbeam 2 to descend through the positioning fixture;

[0056] The descending frame crossbeam 2 presses the two extrusion cylinders 3 distributed in pairs. The two extrusion cylinders 3 slide horizontally and separate from each other respectively by relying on the corresponding sliding plates 23. During this process, the limit spring 24 compresses to generate a resilience force, that is, the two extrusion cylinders 3 can always fit against the frame crossbeam 2 by relying on the resilience force of the limit spring 24. Since half a circle of the second grinding columns 19 is distributed on one side of each extrusion cylinder 3 close to the frame crossbeam 2, then during the process of the frame crossbeam 2 descending and squeezing through the two extrusion cylinders 3, the running second grinding columns 19 can be used to grind the flat parts on both sides. At the same time, since the second grinding columns 19 are distributed along the arc edge of the extrusion cylinder 3, it can also make up for the grinding of the connection position between the arc part and the flat part of the frame crossbeam 2, prevent omission, ensure the grinding effect, and thus complete the end grinding of the flat frame crossbeam 2.

[0057] The above has described several embodiments of the present invention in detail, but the embodiments of the present invention are not limited thereto and should not be considered as defining the scope of implementation of the present invention. Any equivalent changes and improvements made within the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A grinding device for the production and processing of an aluminum alloy frame, which is used to grind the flat frame crossbeam (2), includes a workbench (1) and a positioning fixture for fixedly supporting the frame crossbeam (2), and is characterized in that, It further includes: An arc segment grinding mechanism and a flat surface grinding mechanism; the arc segment grinding mechanism includes a main servo motor (18) and a rotary grinding mechanism, and the main servo motor (18) is used to drive the rotary grinding mechanism to grind along the arc part at the end of the vehicle frame cross beam (2); the flat surface grinding mechanism is used to grind the two flat surface parts on both sides of the end of the vehicle frame cross beam (2); the flat surface grinding mechanism includes a grinding component and an elastic reciprocating support wheel mechanism, and both the elastic reciprocating support wheel mechanism and the grinding component are symmetrically distributed in two groups, and the grinding components are correspondingly distributed on the elastic reciprocating support wheel mechanism; A lifting support mechanism, and the lifting support mechanism is used to support the positioning fixture, and a transmission mechanism is cooperatively arranged between the main servo motor (18) and the lifting support mechanism.

2. The grinding device for the production and processing of an aluminum alloy frame according to claim 1, characterized in that, A main support frame (17) is fixedly connected to the workbench (1), the main servo motor (18) is fixedly connected to the main support frame (17), a transmission shaft (44) is fixedly connected to the main shaft end of the main servo motor (18), first transmission wheels (33) are arranged on both the transmission shaft (44) and the top of the main support frame (17), the transmission shaft (44) is coaxially fixedly connected to the corresponding first transmission wheel (33), a first transmission belt (34) is cooperatively connected between the two first transmission wheels (33), and rotary grinding mechanisms are cooperatively connected to both of the first transmission wheels (33).

3. A grinding device for the production and processing of an aluminum alloy frame according to claim 2, characterized in that, The two rotary grinding mechanisms are symmetrically distributed up and down, and each includes an arc connecting plate (26), a first grinding column (36) and a spacing adjusting mechanism. One side of the arc connecting plate (26) is fixedly connected with a mounting frame (38), the mounting frame (38) is cooperatively connected with the corresponding first transmission wheel (33), the first grinding column (36) is cooperatively arranged inside the arc connecting plate (26), and a driving motor (35) for driving the first grinding column (36) to rotate is arranged on one side of the arc connecting plate (26), and the spacing adjusting mechanism is used to adjust the spacing between the first grinding column (36) and the arc connecting plate (26).

4. A grinding device for the production and processing of an aluminum alloy frame according to claim 3, characterized in that, The spacing adjusting mechanism includes a lifting plate (39) and an adjusting bolt (41), the adjusting bolt (41) is rotatably connected to the arc connecting plate (26), one end of the adjusting bolt (41) penetrates through the lifting plate (39), and the adjusting bolt (41) is threadedly connected to the lifting plate (39), the other end of the lifting plate (39) is connected to the driving motor (35), and a limiting guide rod (40) penetrating through the lifting plate (39) is fixedly connected to the arc connecting plate (26).

5. A grinding device for the production and processing of an aluminum alloy frame according to claim 1, characterized in that, The lifting support mechanism includes a first elastic telescopic support rod (7) and a support guide rail (9), the support guide rail (9) is fixedly connected to the workbench (1), one end of the first elastic telescopic support rod (7) is slidably connected to the support guide rail (9), the other end is fixedly connected to the positioning fixture, and one end of the first elastic telescopic support rod (7) close to the support guide rail (9) is cooperatively connected to the transmission mechanism, and a limiting block (14) is fixedly connected to one side of the support guide rail (9) away from the arc segment grinding mechanism.

6. The grinding device for the production and processing of an aluminum alloy frame according to claim 5, characterized in that, The transmission mechanism includes a second elastic telescopic support rod (8), an inclined plane block (10), a slider (11) and a threaded pushing mechanism. The slider (11) is slidably connected to the workbench (1). One end of the second elastic telescopic support rod (8) is fixedly connected to the slider (11), and the other end is fixedly connected to the bottom of the first elastic telescopic support rod (7). A top frame (12) is fixedly connected to the second elastic telescopic support rod (8) near the slider (11). The inclined plane block (10) is fixedly connected to the positioning fixture, and the inclined plane of the inclined plane block (10) is aligned and matched with the end of the top frame (12). The threaded pushing mechanism is cooperatively connected between the transmission shaft (44) and the slider (11).

7. A grinding device for the production and processing of an aluminum alloy frame according to claim 6, characterized in that, The threaded pushing mechanism includes a threaded sleeve (15), a threaded rod (16), a first transmission gear (31), a second transmission gear (30) and a ratchet and pawl mechanism. The ratchet and pawl mechanism is cooperatively connected to the transmission shaft (44). The first transmission gear (31) is coaxially cooperatively connected to the ratchet and pawl mechanism. The second transmission gear (30) is rotatably connected to the main support frame (17), and the second transmission gear (30) meshes with the first transmission gear (31). Second transmission wheels (29) are arranged at the bottoms of the second transmission gear (30) and the main support frame (17), and a second transmission belt (28) is cooperatively connected between the two second transmission wheels (29). The threaded sleeve (15) is coaxially fixedly connected to the second transmission wheel (29) at the bottom of the main support frame (17). One end of the threaded rod (16) is threadedly connected to the inside of the threaded sleeve (15), and the other end is fixedly connected to the slider (11).

8. A grinding device for the production and processing of an aluminum alloy frame according to claim 7, characterized in that, The ratchet and pawl mechanism includes a fixed ring (32), a ratchet ring (42) and a pawl body (43). The fixed ring (32) is fixedly connected to the main support frame (17). The ratchet ring (42) is rotatably connected to the inside of the fixed ring (32). The transmission shaft (44) penetrates through the ratchet ring (42). The pawl body (43) is movably connected to the side wall of the transmission shaft (44) through a return hinge, and the pawl body (43) cooperates with the ratchet ring (42).

9. The grinding device for the production and processing of an aluminum alloy frame according to claim 1, characterized in that, Both groups of the elastic reciprocating idler wheel mechanisms include a sub-support frame (25), a guide sleeve (22), a sliding plate (23) and an extrusion cylinder (3). The sub-support frame (25) is fixedly connected to the workbench (1). The guide sleeve (22) is fixedly connected to the sub-support frame (25). The sliding plate (23) horizontally penetrates through the guide sleeve (22). The extrusion cylinder (3) is fixedly connected to one end of the sliding plate (23) away from the sub-support frame (25). A limiting spring (24) is fixedly connected between the sliding plate (23) and the sub-support frame (25). The two extrusion cylinders (3) are in contact with each other in the initial state. The grinding assemblies are distributed on the extrusion cylinders (3).

10. A grinding device for the production and processing of an aluminum alloy frame according to claim 9, characterized in that, Both groups of the grinding components include a sub-servo motor (21), a main gear (20), a sub-gear (27), and a second grinding column (19). The sub-servo motor (21) is fixedly connected to the extrusion cylinder (3) correspondingly. The main gear (20) is fixedly connected to the spindle end of the sub-servo motor (21). There are multiple second grinding columns (19), and they are equidistantly distributed in a semi-circle on the circular surface at one end of the extrusion cylinder (3). Each second grinding column (19) is rotatably connected to the corresponding extrusion cylinder (3). There are multiple sub-gears (27), and they are fixedly connected coaxially with the second grinding columns (19) correspondingly. Each sub-gear (27) meshes with the main gear (20).

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