A brake disc assembly anti-reaction rotation device

Abstract

This utility model provides a rotary device for anti-reaction force assembly of brake discs, used in the production of brake discs. The device includes: a base, a lifting mechanism, a rotary mechanism, a clamping mechanism, and several positioning mechanisms. The base is fixed on the production line; the lifting mechanism is mounted on the base; the rotary mechanism is mounted on the lifting mechanism; the clamping mechanism is fixed on the rotary mechanism; and several positioning mechanisms are fixed on the lifting mechanism. The rotary mechanism includes: a second motor, a cross roller, and a cam roller; the second motor is fixed on the lifting mechanism; one end of the cross roller is connected to the output end of the second motor, and the other end is provided with a second thread; the cam roller includes: an inner ring, an outer ring, and a rolling element; the inner ring is fixed on the lifting mechanism; the outer ring is connected to the clamping mechanism; the outer ring is sleeved outside the inner ring and engages with the second thread of the cross roller; the rolling element is disposed between the inner and outer rings.

Description

Technical Field

[0001] This utility model relates to the field of train equipment technology, and in particular to an anti-reaction force rotation device for brake disc assembly. Background Technology

[0002] With the development of my country's railway industry, the demand for trains is gradually increasing. Brake discs, as the braking and rotation devices of train vehicles, play a crucial role in ensuring the normal operation of trains. Currently, in the production of brake discs, the anti-reaction rotation device typically uses a worm gear meshing connection or gear structure as the rotation mechanism to achieve the rotation of the brake disc. Therefore, it suffers from poor rotation accuracy, and the existing anti-reaction rotation device is greatly affected by external forces. For example, accidental external force can cause the brake disc to deflect or even cause the anti-reaction rotation device to shake, easily leading to misalignment between the fixed components and the anti-reaction components. Therefore, during the production process, manual adjustment of the brake disc's rotation position is required to ensure the accuracy of the brake disc's rotation. This operation method is inefficient and labor-intensive for operators. Therefore, there is a need for an anti-reaction rotation device that can achieve precise rotation and high stability. Utility Model Content

[0003] The purpose of this invention is to provide a brake disc assembly anti-reaction rotation device, which improves the rotation accuracy, radial load capacity and stability of the anti-reaction rotation device, and reduces the workload of manual labor.

[0004] To achieve the above objectives, this utility model provides a brake disc assembly anti-reaction force rotation device, comprising:

[0005] The base is fixed on the production line;

[0006] A lifting mechanism is mounted on the base.

[0007] A rotary mechanism is mounted on the lifting mechanism;

[0008] The clamping mechanism is fixed to the rotary mechanism;

[0009] Several positioning mechanisms are symmetrically fixed to the lifting mechanism with the clamping mechanism as the center.

[0010] The rotary mechanism includes:

[0011] The second motor is fixed on the lifting mechanism;

[0012] A cross roller, one end of which is connected to the output end of the second motor, and the other end is provided with a second thread;

[0013] A cam roller includes an inner ring, an outer ring, and a rolling element; the inner ring is fixed on a lifting mechanism; the outer ring is connected to a clamping mechanism; the outer ring is sleeved outside the inner ring and engages with the second thread of the cross roller; the rolling element is disposed between the inner ring and the outer ring.

[0014] Optionally, the second motor is a servo motor and is equipped with a brake.

[0015] Optionally, the lifting mechanism includes:

[0016] The drive unit includes: a first motor, a lead screw, and a lead screw nut; the first motor is fixed on the base; the lead screw is placed vertically and connected to the output end of the first motor through a coupling; the lead screw nut is sleeved on the lead screw and rotates with the lead screw to achieve lifting and lowering.

[0017] Several first positioning rods are vertically fixed on the base;

[0018] The workbench includes:

[0019] The first platform is used to install the rotary mechanism, clamping mechanism and several positioning mechanisms;

[0020] The second platform has a first through hole, and the lead screw nut is fixed inside the first through hole, so that the lead screw passes through the lead screw nut and drives the second platform to move up and down; the edge of the second platform has a number of first positioning holes that match the position of the first positioning rod, so that the first positioning rod passes through the corresponding first positioning hole.

[0021] Several support rods are vertically placed between the first platform and the second platform, so that there is an accommodating space between the first platform and the second platform; and when the lifting mechanism is in the initial position, the top of the first positioning rod passes through the corresponding first positioning hole, enters the accommodating space, and contacts the lower surface of the first platform.

[0022] Optionally, the first through hole is located at the center of the second platform, so that the drive unit is located at the center of the worktable.

[0023] Optionally, a bushing bearing is provided at each of the first positioning holes of the second platform, so that the first positioning rod corresponding to the first positioning hole passes through the bushing bearing.

[0024] Optionally, the clamping mechanism is a three-jaw chuck, which is coaxially placed with the cam roller and includes: three jaws and an air inlet; the air inlet is located at the bottom end of the three-jaw chuck and is used to supply air to the three-jaw chuck and drive the jaws to move outward along the radial direction of the three-jaw chuck; the three jaws are located at the top end of the three-jaw chuck and are used to pass through the central positioning hole of the brake disc and make it fit tightly against the inner wall of the central positioning hole to fix the brake disc.

[0025] Optionally, it further includes: a pneumatic slip ring, which is disposed on a first platform at the center of the inner ring of the cam roller; the pneumatic slip ring is provided with a stator and a rotor connected by a seal, the stator is connected to a gas pipe, and the rotor is disposed at the axis of the three-jaw chuck and connected to the air inlet of the three-jaw chuck to realize the supply of air to the three-jaw chuck.

[0026] Optionally, each positioning mechanism includes:

[0027] A cylinder, with its output end pointing vertically upward, is used to provide upward thrust.

[0028] A push rod, one end of which is located at the output end of the cylinder;

[0029] An anti-reaction component is fixed to the other end of the push rod, and the top surface of the anti-reaction component is provided with a groove, the shape and size of which match the fixing component of the brake disc;

[0030] A support frame is vertically mounted on a first platform; the cylinder is mounted on the top of the support frame, and a third through hole is provided at the corresponding position of the cylinder in the support frame, so that the top end of the push rod passes through the third through hole and connects with the anti-reaction component.

[0031] Optionally, the height of the anti-reaction member after it is raised is matched with the height of the brake disc after it is fixed in the clamping mechanism, so that the bottom of the groove of the anti-reaction member contacts the fixing part of the brake disc.

[0032] Optionally, each of the positioning mechanisms further includes:

[0033] A support base, the lower surface of which is connected to the top end of the push rod, and the upper surface of which is connected to the bottom end of the anti-reaction component, so that the support base is fixed between the anti-reaction component and the top end of the push rod;

[0034] The second positioning rod has its top end passing through a second positioning hole opened next to the third through hole in the top support plate and connected to the support base.

[0035] Compared with the prior art, the technical solution of this utility model has at least the following beneficial effects:

[0036] The anti-reaction rotation device of this utility model utilizes a meshing connection structure of cam rollers and crossed rollers. Compared with the worm gear meshing connection used in the prior art as a rotation mechanism or gear rotation mechanism, it has higher repeatability and improves the rotation accuracy of the rotation mechanism. Simultaneously, by installing a brake on the second motor connected to the crossed rollers, it prevents the second motor from moving due to external forces when it is stationary and de-energized, thereby preventing the crossed rollers from rotating and ensuring the rotation accuracy of the rotation mechanism. The rotation angle of the rotation mechanism can be precisely controlled by controlling the working time of the second motor, reducing the workload of manual adjustment.

[0037] In the anti-reaction rotation device of this utility model, the first positioning rod passes through the first positioning hole at the edge of the second platform, enabling the second platform to rise and fall along the first positioning rod, thereby improving the radial load capacity of the anti-reaction rotation device. At the same time, a bushing bearing is provided at each first positioning hole of the second platform, and the first positioning rod passes through the bushing bearing, reducing the radial clearance between the first positioning hole and the first positioning rod, further improving the ability of the worktable to withstand radial loads, and improving the stability and durability of the lifting mechanism.

[0038] In the anti-reaction rotation device of this utility model, the positioning mechanism is provided with a second positioning rod and a support seat. When the anti-reaction component receives a torque force, the torque force can be transmitted to the second positioning rod through the support seat. The second positioning rod and the support frame through which it passes together provide a reaction force to prevent the anti-reaction component from rotating and improve the stability of the anti-reaction component. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the anti-reaction device for the brake disc assembly described in this utility model.

[0040] Figure 2 This is a cross-sectional view of the anti-reaction device assembled with the brake disc described in this utility model.

[0041] Figure 3 This is a schematic diagram of the rotary mechanism in the anti-reaction device of the brake disc assembly described in this utility model.

[0042] Figure 4 This is a schematic diagram of the meshing connection between the cross rollers and the cam rollers in the anti-reaction device of the brake disc assembly described in this utility model.

[0043] Figure 5 This is a schematic diagram of the positioning mechanism of the anti-reaction device for the brake disc assembly described in this utility model.

[0044] In the diagram, 1-base, 21-first motor, 22-coupling, 23-lead screw, 24-lead screw nut, 25-first platform, 26-second platform, 27-support rod, 28-first positioning rod, 29-bulb bearing, 3-rotation mechanism, 31-second motor, 32-cam roller, 321-outer ring, 322-protruding tooth, 323-inner ring, 33-cross roller, 331-second thread, 34-roller housing, 35-roller housing, 4-clamping mechanism, 41-jaw, 5-positioning mechanism, 51-cylinder, 52-push rod, 53-anti-reaction component, 54-second positioning rod, 55-support seat, 56-support frame, 561-bottom support plate, 562-top support plate, 563-vertical support plate. Detailed Implementation

[0045] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0046] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] During the brake disc manufacturing process, it is necessary to fix the center positioning hole at the center of the brake disc and then tighten the fixing parts arranged in the circumferential direction of the brake disc in sequence. To achieve precise positioning of the brake disc fixing parts and meet the anti-reaction force requirements of the tightening process, reduce the workload of manual positioning, and improve the stability of the anti-reaction force rotation device, such as... Figure 1As shown, this utility model provides a rotary device for resisting reaction force in brake disc assembly. The rotary device for resisting reaction force includes: a base 1, a lifting mechanism, a rotary mechanism 3, a clamping mechanism 4, and several positioning mechanisms 5. The base 1 is fixed on the production line; the lifting mechanism is disposed on the base 1 and can change its height; the rotary mechanism 3, the clamping mechanism 4, and the several positioning mechanisms 5 are all disposed on the lifting mechanism, and the clamping mechanism 4 is fixed on the rotary mechanism 3, and the several positioning mechanisms 5 are symmetrically fixed on the outside of the rotary mechanism 3.

[0049] like Figure 2 As shown, the lifting mechanism includes a drive unit, a worktable, and several first positioning rods 28. The drive unit is connected to the worktable and controls the height of the worktable. The worktable is used to house the rotary mechanism 3, the clamping mechanism 4, and several positioning mechanisms 5. Each first positioning rod 28 is vertically fixed to the base 1, and its top end passes through the worktable to limit the movement of the worktable.

[0050] Specifically, the drive unit includes: a first motor 21, a coupling 22, a lead screw 23, and a lead screw nut 24. The first motor 21 is fixed on the base 1 and is used to provide torque energy; the coupling 22 is fixedly disposed at the output end of the first motor 21 and is used to transmit torque energy; the lead screw 23 is placed vertically and is connected to the output end of the first motor 21 through the coupling 22. When the first motor 21 is turned on and outputs torque energy, it can drive the lead screw 23 to rotate through the coupling 22; the lead screw nut 24 is sleeved on the lead screw 23 and is connected to the lead screw 23 through a first thread, and can be raised and lowered as the lead screw 23 rotates.

[0051] The workbench is a platform for tightening brake disc fasteners, comprising: a first platform 25, a second platform 26, and several support rods 27. The first platform 25 houses the rotary mechanism 3, the clamping mechanism 4, and several positioning mechanisms 5. The second platform 26 has a first through hole, inside which a lead screw nut 24 is fixed. The diameter of the first through hole matches the outer diameter of the lead screw nut 24, allowing the lead screw 23 to pass through the lead screw nut 24 and rotate under the drive of the first motor 21. The lifting and lowering of the lead screw nut 24 then drives the second platform 26 to move up and down. The edge of the second platform 26 has several first positioning holes that match the positions of the first positioning rods 28, allowing the first positioning rods 28 to pass through the corresponding first positioning holes. Each support rod 27 is vertically connected between the first platform 25 and the second platform 26, creating an accommodating space between them. Furthermore, the first positioning rod 28 and the support rod 27 are staggered in the vertical direction (i.e., the positions of the first positioning rod 28 and the support rod 27 are not on the same axis) to ensure that the first positioning rod 28 can be inserted into the accommodating space.

[0052] When the lifting mechanism is in its initial position, the tip of each of the first positioning rods 28 passes through its corresponding first positioning hole and enters the accommodating space, with its tip contacting the lower surface of the first platform 25 to limit the descent height of the worktable. When the drive unit is activated to control the worktable to rise, as the worktable moves upward along the lead screw 23, the lower surface of the first plane 25 will gradually move away from the tip of the first positioning rod 28 until the tip of the first positioning rod 28 enters its corresponding first positioning hole, that is, until the tip of the first positioning rod 28 is flush with the second platform 26.

[0053] Furthermore, the length of the first positioning rod 28 matches the length of the lead screw 23, preventing the top of the first positioning rod 28 from disengaging from the first positioning hole and limiting the lifting height of the worktable. Therefore, the maximum lifting height of the worktable is related to the height of the accommodating space.

[0054] In a preferred embodiment, the first through hole is located at the center of the second platform 26, so that the drive unit is located at the center of the worktable, ensuring that the worktable is always subjected to balanced force, and improving the stability and resistance to external forces of the lifting mechanism.

[0055] When the height of the worktable is changed, the first motor 21 drives the coupling 22 to rotate, which in turn drives the lead screw 23 to rotate. The lead screw nut 24 rises and falls with the rotation of the lead screw 23. Since the second platform 26 is fixed together with the lead screw nut 24 and its edge passes through the first positioning rod 28, the second platform 26 moves up and down along the first positioning rod 28 and together with the lead screw nut 24. In turn, the second platform 26 drives the first platform 25 to move up and down through the support rod 27.

[0056] In a preferred embodiment, the drive unit is a screw jack, with the first motor 21 and the screw 23 placed vertically. The coupling 22 includes a worm and a worm wheel that mesh with each other. The worm is placed horizontally and connected to the output end of the first motor 21, and the worm surface has a third thread. The worm wheel is a gear structure with a surface that matches the third thread on the worm surface. This gear structure meshes with the third thread of the worm and rotates with the worm. The worm wheel is sleeved on the bottom end of the screw 23 and can drive the screw 23 to rotate coaxially. The first motor 21 drives the worm to rotate, which in turn drives the worm wheel to rotate, thus changing the direction of the output torque kinetic energy of the first motor 21, thereby causing the vertically positioned screw 23 to rotate.

[0057] In a preferred embodiment, bushing bearings 29 are provided at each of the first positioning holes of the second platform 26, so that the first positioning rod 28 corresponding to the first positioning hole passes through the bushing bearings 29, thereby reducing the radial clearance between the first positioning hole and the first positioning rod 28, improving the ability of the worktable to withstand radial loads, and thus improving the stability and durability of the lifting mechanism. The bushing bearings 29 are selected from graphite bushing bearings with positioning steps.

[0058] In a preferred embodiment, a limiting block is provided at the top of the lead screw 23 to limit the lifting height of the worktable and prevent the lead screw nut 24 from disengaging from the lead screw 23 when it rises.

[0059] like Figure 2 , Figure 3 and Figure 4 As shown, the rotary mechanism 3 is fixed on the first platform 25 and includes: a housing, a second motor 31, a cam roller 32, and a cross roller 33. The second motor 31 is fixed on the first platform 25 and is typically a servo motor. The servo motor is pulse controlled and is equipped with a brake to prevent the second motor 31 from moving due to external forces when it is stationary and de-energized.

[0060] like Figure 4 As shown, one end of the cross roller 33 is connected to the output end of the second motor 31, and the other end is provided with a second thread 331.

[0061] like Figure 4 As shown, the cam roller 32 is a ball bearing that meshes with the cross roller 33, enabling high-precision rotary motion. The cam roller 32 includes an inner ring 323, an outer ring 321, and rolling elements. The inner ring 323 has several evenly arranged second through holes on its side surface, allowing it to be fixed to the first platform 25 using a connector. The outer ring 321 is fitted over the inner ring 323, and its outer surface has evenly arranged protruding teeth 322. The spacing of the protruding teeth 322 matches the pitch of the second thread 331, allowing the outer ring 321 to mesh with the cross roller 33. The rolling elements are positioned between the inner ring 323 and the outer ring 321, separating them and providing lubrication; the rolling elements are typically ball bearings.

[0062] like Figure 3 As shown, the housing is used to protect the cam roller 32 and the cross roller 33, and includes: a roller housing 34 and a roller housing 35; the roller housing 35 is sleeved on the protrusions 322 of the outer ring 321, protecting the protrusions 322 of the outer ring 321 inside the roller housing 35; the cross roller 33 is provided inside the roller housing 34, and the roller housing 34 and the roller housing 35 are connected together at the junction of the cross roller 33 and the cam roller 32.

[0063] When the rotary mechanism 3 rotates, the second motor 31 outputs torque kinetic energy and transmits it to the cross roller 33, and the cross roller 33 starts to rotate. Since the second thread 331 on the cross roller 33 is engaged with the outer ring 321 of the cam roller 32, the cross roller 33 drives the outer ring 321 of the cam roller 32 to rotate.

[0064] like Figure 1 and Figure 2 As shown, the clamping mechanism 4 is fixed on the outer ring 321 of the cam roller 32 and is placed coaxially with the cam roller 32, so that the clamping mechanism 4 can rotate together with the outer ring 321 of the cam roller 32. The clamping mechanism 4 is a three-jaw chuck, typically a KS10-3XC30 type pneumatic chuck. The three-jaw chuck includes three jaws 41 at its top, which fix the center positioning hole of the brake disc by expanding and contracting. When the three-jaw chuck is in its initial state, the three jaws 41 are in a retracted state, and the center positioning hole of the brake disc can be inserted into the three jaws 41. When the three-jaw chuck is in an inflated state, the three jaws 41 move outward along the radial direction of the three-jaw chuck, so that the three-jaw chuck is in an open state, clamping the center positioning hole of the brake disc. When the three-jaw chuck is in a deflated state, the three jaws 41 move inward along the radial direction of the three-jaw chuck, so that the three-jaw chuck is in a retracted state.

[0065] Furthermore, the three-jaw chuck also includes an air inlet at its bottom end, and a third through hole can be provided on the first platform 25 at the center of the inner ring 323 of the cam roller 32, so that the air pipe passes through the third through hole and the cam roller 32 in sequence and is connected to the air inlet, thereby supplying air to the three-jaw chuck, and driving the jaw 41 to move outward along the radial direction of the three-jaw chuck.

[0066] In a preferred embodiment, to prevent the air pipe from being damaged when the three-jaw chuck rotates with the cam roller 32, a pneumatic slip ring is provided on the first platform 25 at the center of the inner ring 323 of the cam roller 32. The pneumatic slip ring has a stator and a rotor connected by a seal. The stator is connected to the air pipe, and the rotor is located at the axis of the three-jaw chuck and connected to the air inlet of the three-jaw chuck to supply air to it. When the three-jaw chuck rotates together with the outer ring 321 of the cam roller 32, the stator of the pneumatic slip ring remains stationary, while the rotor rotates coaxially with the three-jaw chuck. Simultaneously, gas enters the stator of the pneumatic slip ring through the air pipe, passes through the seal, enters the rotor, and then enters the three-jaw chuck, pushing the jaws 41 of the three-jaw chuck to move outward in the radial direction, causing the three jaws 41 of the three-jaw chuck to open, so that the three jaws 41 are tightly attached to the inner wall of the center positioning hole, thereby achieving clamping of the center positioning hole of the brake disc.

[0067] like Figure 1 , Figure 2 and Figure 5 As shown, several positioning mechanisms 5 are symmetrically fixed on the first platform 25 with a three-jaw chuck as the center. Each positioning mechanism 5 includes: a support frame 56, a cylinder 51, a push rod 52, and an anti-reaction component 53. The cylinder 51 is mounted on the support frame 56, and its output end is vertically upward, used to provide upward pushing energy; one end of the push rod 52 is connected to the output end of the cylinder 51, used to transmit pushing energy; the anti-reaction component 53 is fixed to the other end of the push rod 52, so that the height of the anti-reaction component 53 can be changed by the push rod 52; the top surface of the anti-reaction component 53 is provided with a groove, the shape and size of which match the fixing component of the brake disc, so that the anti-reaction component 53 is fitted onto the fixing component of the brake disc, preventing the fixing component from moving. The support frame 56 is vertically mounted on the first platform 25, and the support frame 56 is a cuboid structure formed by connecting a bottom support plate 561 and a top support plate 562 through two vertical support plates 563. The bottom support plate 561 is fixed to the first platform 25, and the two vertical support plates 563 are vertically fixed on the symmetrical sides of the bottom support plate 561 to provide support for the top support plate 562. The two ends of the top support plate 562 are respectively fixed to the two vertical support plates 563; a cylinder 51 is fixed to the lower surface of the top support plate 562, and a third through hole is provided at the corresponding position of the cylinder 51 fixed on the top support plate 562, so that the top end of the push rod 52 passes through the third through hole and connects to the anti-reaction member 53.

[0068] Furthermore, when the positioning mechanism 5 is working, the cylinder 51 is inflated and pushes the push rod 52 upward, causing the anti-reaction member 53 to rise. The height of the anti-reaction member 53 after it rises matches the height of the brake disc after it is fixed to the three-jaw chuck, so that the bottom of the groove of the anti-reaction member 53 can contact the fixing part of the brake disc.

[0069] Furthermore, the cylinders 51 of several of the positioning mechanisms 5 operate synchronously.

[0070] In a preferred embodiment, to improve the stability of the anti-reaction component 53 during operation, such as... Figure 5As shown, each positioning mechanism 5 further includes: a support base 55 and a second positioning rod 54; simultaneously, a second positioning hole is opened next to the third through hole of the top support plate 562. The lower surface of the support base 55 is connected to the top end of the push rod 52, and the upper surface of the support base 55 is connected to the bottom end of the anti-reaction member 53, so that the support base 55 is fixed between the anti-reaction member 53 and the top end of the push rod 52; the top end of the second positioning rod 54 passes through the second positioning hole and is connected to the support base 55. When the positioning mechanism 5 is working, the cylinder 51 is inflated and pushes the push rod 52 upward, which in turn drives the support seat 55 and the anti-reaction member 53 to move upward. At the same time, the support seat 55 drives the second positioning rod 54 to move upward through the second positioning hole until the bottom end of the groove of the anti-reaction member 53 contacts the fixing part of the brake disc. When the fixing part of the brake disc is tightened, the anti-reaction member 53 fixes the fixing part of the brake disc to prevent the fixing part from rotating. At this time, the second positioning rod 54 is further fixed to the anti-reaction member 53 through the support seat 55 to prevent the anti-reaction member 53 from swaying left and right.

[0071] In the production of the brake disc, the positioning mechanism 5 of the rotary device is located directly below the tightening equipment. During production, the brake disc to be assembled is transported to the top of the three-jaw chuck of the rotary device. At this time, the first motor 21 starts working, sequentially driving the coupling and the lead screw 23 to rotate, thereby driving the lead screw nut 24 to move upward; the lead screw nut 24 drives the worktable to move upward, and at the same time, the second platform 26 in the worktable moves upward along the first positioning rod 28; when the jaws 41 of the three-jaw chuck on the worktable are inserted into the center positioning hole of the brake disc, the three-jaw chuck is controlled to be in an inflated state, so that the jaws 41 of the three-jaw chuck change from a contracted state to an open state, so that all three jaws 41 are tightly attached to the inner wall of the center positioning hole, thereby fixing the brake disc. Simultaneously, the cylinder 51 of the positioning mechanism 5 is inflated, causing the push rod 52 to move upward. The push rod 52 drives the support base 55 and the anti-reaction member 53 to move, which in turn causes the support base 55 to drive the second positioning rod 54 to move upward through the second positioning hole until the bottom of the groove of the anti-reaction member 53 contacts the fixing member of the brake disc. Then, the tightening device descends and tightens the fixing member of the brake disc (if the fixing member is a bolt, the tightening device tightens the nut and bolt). At this time, the groove of the anti-reaction member 53 clamps the fixing member to prevent the fixing member from rotating. At the same time, the second positioning rod 54 further fixes the anti-reaction member 53 through the support base 55, improving the anti-torque capability of the anti-reaction member 53.

[0072] After the tightening device completes one tightening operation of the fastener, the tightening device rises again, and the cylinder 51 releases air, causing the push rod 52 to return to its original position. At the same time, the second motor 31 drives the cross roller 33 to rotate, which in turn drives the cam roller 32 to rotate, and drives the three-jaw chuck connected to the outer ring 321 of the cam roller 32 to rotate, which in turn drives the brake disc to rotate. The working time of the second motor 31 can be set according to the spacing of the fasteners on the brake disc, so as to precisely control the rotation angle of the brake disc and move the untightened fasteners on the brake disc to directly above the anti-reaction member 53. The above process is repeated until all the fasteners on the brake disc are tightened.

[0073] In summary, the anti-reaction rotation device of this utility model utilizes the meshing connection structure of cam rollers and cross rollers to improve the rotation accuracy of the rotation mechanism; at the same time, by setting a bushing bearing between the first positioning rod and the first positioning hole, the ability of the worktable to withstand radial loads is improved; and by setting a second positioning rod and a support seat in the positioning mechanism, the anti-torque capability of the anti-reaction component is improved, thereby improving the stability and durability of the anti-reaction rotation device.

[0074] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A reaction force-resistant rotary device for brake disc assembly, used in brake disc production operations, characterized in that, include: The base is fixed on the production line; A lifting mechanism is mounted on the base. A rotary mechanism is mounted on the lifting mechanism; The clamping mechanism is fixed to the rotary mechanism; Several positioning mechanisms are symmetrically fixed to the lifting mechanism with the clamping mechanism as the center. The rotary mechanism includes: The second motor is fixed on the lifting mechanism; A cross roller, one end of which is connected to the output end of the second motor, and the other end is provided with a second thread; A cam roller includes an inner ring, an outer ring, and a rolling element; the inner ring is fixed on a lifting mechanism; the outer ring is connected to a clamping mechanism; the outer ring is sleeved outside the inner ring and engages with the second thread of the cross roller; the rolling element is disposed between the inner ring and the outer ring.

2. The anti-reaction rotation device for brake disc assembly according to claim 1, characterized in that, The second motor is a servo motor and it is equipped with a brake.

3. The anti-reaction rotation device for brake disc assembly according to claim 1, characterized in that, The lifting mechanism includes: The drive unit includes: a first motor, a lead screw, and a lead screw nut; the first motor is fixed on the base; the lead screw is placed vertically and connected to the output end of the first motor through a coupling; the lead screw nut is sleeved on the lead screw and rotates with the lead screw to achieve lifting and lowering. Several first positioning rods are vertically fixed on the base; The workbench includes: The first platform is used to install the rotary mechanism, clamping mechanism and several positioning mechanisms; The second platform has a first through hole, and the lead screw nut is fixed inside the first through hole, so that the lead screw passes through the lead screw nut and drives the second platform to move up and down; the edge of the second platform has a number of first positioning holes that match the position of the first positioning rod, so that the first positioning rod passes through the corresponding first positioning hole. Several support rods are vertically placed between the first platform and the second platform, so that there is an accommodating space between the first platform and the second platform; and when the lifting mechanism is in the initial position, the top of the first positioning rod passes through the corresponding first positioning hole, enters the accommodating space, and contacts the lower surface of the first platform.

4. The anti-reaction rotation device for brake disc assembly according to claim 3, characterized in that, The first through hole is located at the center of the second platform, so that the drive unit is located at the center of the worktable.

5. The anti-reaction rotation device for brake disc assembly according to claim 3, characterized in that, A bushing bearing is provided at each of the first positioning holes of the second platform, so that the first positioning rod corresponding to the first positioning hole passes through the bushing bearing.

6. The anti-reaction rotation device for brake disc assembly according to claim 1, characterized in that, The clamping mechanism is a three-jaw chuck, which is coaxially placed with the cam roller and includes: 3 jaws and an air inlet; the air inlet is located at the bottom of the three-jaw chuck and is used to supply air to the three-jaw chuck and drive the jaws to move outward along the radial direction of the three-jaw chuck; the 3 jaws are located at the top of the three-jaw chuck and are used to pass through the central positioning hole of the brake disc and make it fit tightly against the inner wall of the central positioning hole to fix the brake disc.

7. The anti-reaction rotation device for brake disc assembly according to claim 6, characterized in that, Also includes: A pneumatic slip ring is provided, which is set on a first platform at the center of the inner ring of the cam roller; the pneumatic slip ring has a stator and a rotor connected by a seal inside, the stator is connected to a gas pipe, and the rotor is set at the axis of the three-jaw chuck and connected to the air inlet of the three-jaw chuck to supply air to the three-jaw chuck.

8. The anti-reaction rotation device for brake disc assembly according to claim 1, characterized in that, Each positioning device includes: A cylinder, with its output end pointing vertically upward, is used to provide upward thrust. A push rod, one end of which is located at the output end of the cylinder; An anti-reaction component is fixed to the other end of the push rod, and the top surface of the anti-reaction component is provided with a groove, the shape and size of which match the fixing component of the brake disc; A support frame is vertically mounted on a first platform; the cylinder is mounted on the top of the support frame, and a third through hole is provided at the corresponding position of the cylinder in the support frame, so that the top end of the push rod passes through the third through hole and connects with the anti-reaction component.

9. The anti-reaction rotation device for brake disc assembly according to claim 8, characterized in that, The height of the anti-reaction component after it is raised matches the height of the brake disc after it is fixed in the clamping mechanism, so that the bottom of the groove of the anti-reaction component contacts the fixing part of the brake disc.

10. The anti-reaction rotation device for brake disc assembly according to claim 8, characterized in that, Each of the positioning mechanisms further includes: A support base, the lower surface of which is connected to the top end of the push rod, and the upper surface of which is connected to the bottom end of the anti-reaction component, so that the support base is fixed between the anti-reaction component and the top end of the push rod; The second positioning rod has its top end passing through a second positioning hole opened next to the third through hole in the support frame and connected to the support base.

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