A grinding device for elevator fitting production

Abstract

The application provides a grinding device for elevator accessory production and relates to the field of grinding devices.The grinding device comprises a grinding assembly, which is composed of a track mechanism, a profiling mechanism, a grinding mechanism and a synchronization mechanism.The grinding assembly has a profiling function.Through the control of the profiling mechanism, the grinding mechanism can self-adaptively adjust the grinding angle according to the inclination of the conical surface, so as to ensure that the grinding belt is always parallel to the grinding surface, guarantee the quality and effect of the grinding processing, and automatically and dynamically adjust the running track of the grinding belt according to the slope of the conical surface, so that the grinding processing operation can be adapted to different specifications of elevator conical accessories, and the problem that, when the existing grinding device grinds the conical accessory, the grinding belt cannot accurately fit the inclination angle of the conical surface due to the lack of profiling self-adaptive function, the surface grinding degree is uneven, and the surface precision of the accessory is seriously affected is solved.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and more particularly to a grinding equipment for the production of elevator parts. Background Technology

[0002] In the production process of elevator parts, grinding can make the surface of the parts achieve higher precision and smoothness, ensuring the operational accuracy, stability and safety of the parts after assembly. There are many tapered parts in elevator parts, such as tapered guide rail sliders and tapered bearing seats.

[0003] When existing grinding equipment used in elevator parts production grinds tapered parts, it lacks a contour-adaptive function. The grinding belt cannot precisely conform to the inclination angle of the tapered surface, and its trajectory cannot dynamically adjust with the tapered surface slope. This results in the grinding belt remaining non-parallel to the tapered surface, causing differences in grinding pressure and stroke across different areas of the tapered part's surface. Consequently, the surface grinding degree varies, leading to over-grinding or under-grinding in certain areas, severely affecting the surface accuracy of the parts. Furthermore, when dealing with parts of different taper specifications, frequent changes of grinding fixtures or adjustments to equipment parameters are required, making operation cumbersome and adaptable, resulting in low overall grinding efficiency and limited practicality. Summary of the Invention

[0004] This invention relates to a grinding device for elevator parts production, which includes a grinding assembly. The grinding assembly enables rapid grinding of conical elevator parts, is convenient and flexible to use, and has a contouring function. Through the control of the contouring mechanism, the grinding mechanism can adaptively adjust the grinding angle according to the inclination of the conical surface, thereby ensuring that the grinding belt is always parallel to the grinding surface, ensuring the quality and effect of the grinding process. Furthermore, the running trajectory of the grinding belt can be automatically and dynamically adjusted according to the inclination of the conical surface, thus adapting to the grinding of elevator conical parts of different specifications. It is highly flexible, adaptable, and practical.

[0005] This invention provides a grinding device for elevator parts production, specifically including: a mounting assembly, which includes a mounting base, an electric push rod, and a positioning chuck, wherein the positioning chuck is rotatably connected to the top of the mounting base, and the electric push rod is fixedly mounted on the top of the mounting base; and a grinding assembly, which includes a track mechanism, a contouring mechanism, and a grinding mechanism. The track mechanism includes a track seat, a positioning rod, and a synchronizing rod. The track seat is fixedly installed on the top of the push rod of the electric push rod, and the positioning rod is rotatably connected inside the track seat. The synchronizing rod is rotatably connected to the side of the track seat. The contouring mechanism includes a displacement seat a and a contouring arm. The displacement seat a is inserted into the track seat, and the contouring arm is rotatably connected to the bottom of the displacement seat a. The grinding mechanism includes a displacement seat b, a roller frame, two drive rollers, a grinding belt, and a drive motor. The displacement seat b is inserted into the track seat, and the roller frame is rotatably connected to the bottom of the displacement seat b. The two drive rollers are rotatably connected inside the roller frame, and the grinding belt is installed outside the two drive rollers. The drive motor is fixedly installed on the side of the displacement seat b.

[0006] Furthermore, the grinding assembly also includes a synchronization mechanism. There are two sets of synchronization mechanisms, which are symmetrical to each other. The synchronization mechanism includes a connecting seat, a control lever, a synchronization block, and a linkage block. The connecting seats of the two sets of synchronization mechanisms are fixedly connected to the sides of displacement seat a and displacement seat b, respectively. The control lever is rotatably connected inside the connecting seat, the synchronization block is rotatably connected inside the connecting seat, and the linkage block is inserted into the inside of the connecting seat. The synchronization mechanism located on the side of displacement seat a is the driving mechanism, and the synchronization mechanism located on the side of displacement seat b is the driven mechanism.

[0007] Furthermore, the contouring arm has a contact wheel on its side and a return torsion spring on the outside of the contouring arm's shaft. Under the action of the return torsion spring, when the contouring arm and the contact wheel are not pressed by external force, the contouring arm is in a vertical state.

[0008] Furthermore, both displacement seats a and b have movable protrusions inside, and the positioning rod has a spiral moving groove on the outside. The moving groove has two sections, and the two sections are symmetrical to each other. The movable protrusions of displacement seats a and b are respectively inserted into the interior of the two sections of the moving groove.

[0009] Furthermore, both displacement seats a and b are provided with reset springs on their sides. One reset spring has its two ends abutting against the inside of the track seat and the side of displacement seat a, respectively, while the other reset spring has its two ends abutting against the inside of the track seat and the side of displacement seat b, respectively.

[0010] Furthermore, the synchronization mechanism also includes a reversing gear, which is rotatably connected inside the connecting seat. A connecting gear is provided outside the rotating shaft of the control lever, and control gears are provided outside the rotating shafts of the contouring arm and the roller frame. The reversing gear of the active mechanism meshes with the control gear of the contouring arm and the connecting gear of the control lever of the active mechanism on both sides, and the reversing gear of the driven mechanism meshes with the control gear of the roller frame and the connecting gear of the control lever of the driven mechanism on both sides.

[0011] Furthermore, the control lever has a linkage slot inside, and the linkage block has a linkage lever on its side, with the linkage lever inserted into the linkage slot.

[0012] Furthermore, the linkage block has a conversion protrusion inside, and the synchronization block has a conversion groove with a spiral direction on the outside, with the conversion protrusion inserted into the inside of the conversion groove.

[0013] Furthermore, the cross-sectional shape of the synchronizing rod is a regular polygon, and the inside of the synchronizing block is provided with a synchronizing groove, with the part of the synchronizing rod with the regular polygonal cross-section inserted into the inside of the synchronizing groove.

[0014] Furthermore, the contouring mechanism and the grinding mechanism are symmetrically arranged on both sides of the center of the positioning chuck, and the side of the drive motor is provided with a drive gear. The drive gear and the rotating shaft of the roller frame are on the same axis. The top of the rotating shaft of one of the transmission rollers is provided with a grinding gear, and the grinding gear and the drive gear mesh and transmit power.

[0015] This invention provides a grinding device for elevator parts manufacturing, which has the following advantages: 1. The grinding assembly enables rapid grinding of conical elevator parts, offering convenient and flexible operation. It also features a contouring function; through the control of the contouring mechanism, the grinding mechanism adaptively adjusts the grinding angle based on the inclination of the conical surface, ensuring the grinding belt remains parallel to the grinding surface and guaranteeing the quality and effectiveness of the grinding process. Furthermore, the grinding belt's trajectory can automatically and dynamically adjust with the conical surface slope, thus adapting to grinding operations on elevator conical parts of different specifications, enhancing the device's flexibility, adaptability, and practicality.

[0016] 2. The contact wheel of the contouring mechanism can provide real-time feedback according to the slope of the conical surface. Through the linkage structure of the gear transmission chain and the spiral groove group of the synchronization mechanism, the roller frame is driven to deflect synchronously at the corresponding angle, ensuring that the grinding belt always maintains a parallel grinding state with the conical surface. This fundamentally eliminates the problem of uneven surface accuracy caused by angular deviation in traditional grinding. The linkage design of the spiral moving groove of the positioning rod and the displacement seat enables the grinding components to achieve synchronous contouring displacement in the lateral dimension, forming a three-dimensional dynamic contouring system. It can automatically adapt to various conical elevator parts for processing. With the elastic buffer structure of the return torsion spring and the return top spring, it not only ensures the uniformity of grinding pressure but also avoids the risk of device jamming.

[0017] 3. The design that the drive gear and the roller frame's shaft are on the same axis ensures that the teeth of the grinding gear and the drive gear are always in a meshing transmission state, regardless of how the roller frame's operating angle changes, thus guaranteeing the stability of the grinding process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram: Figure 1 A schematic diagram of the structure of the present invention is shown.

[0021] Figure 2 The present invention is shown. Figure 1 A schematic diagram of the structure on the dorsal side.

[0022] Figure 3 The present invention is shown. Figure 2 Enlarged structural diagram of part A in the middle.

[0023] Figure 4 A schematic diagram of the disassembled track mechanism of the present invention is shown.

[0024] Figure 5 A schematic diagram of the disassembled contouring mechanism and grinding mechanism of the present invention is shown.

[0025] Figure 6 A schematic diagram of the disassembled synchronization mechanism of the present invention is shown.

[0026] Figure 7 A schematic diagram of the internal structure of the present invention is shown.

[0027] Figure 8 The present invention is shown. Figure 7 Enlarged structural diagram of part B in the middle.

[0028] Figure 9 The present invention is shown. Figure 7 Enlarged structural diagram of part C in the middle.

[0029] Figure 10 This diagram illustrates the internal structure of the conical component during grinding according to the present invention.

[0030] Figure 11 The present invention is shown. Figure 10 Enlarged structural diagram of part D in the middle.

[0031] Figure 12 This diagram illustrates the internal structure of a tapered fitting of another specification during grinding according to the present invention.

[0032] List of reference numerals 1. Mounting components; 101. Mounting base; 102. Electric actuator; 103. Positioning chuck; 2. Track mechanism; 201. Track base; 202. Positioning rod; 2021. Moving slot; 203. Synchronizing rod; 3. Copying mechanism; 301. Displacement seat a; 3011. Moving protrusion; 3012. Return spring; 302. Copying arm; 3021. Abutting wheel; 3022. Control gear; 4. Grinding mechanism; 401. Displacement seat b; 402. Roller frame; 403. Transmission roller; 4031. Grinding gear; 404. Grinding belt; 405. Drive motor; 4051. Drive gear; 5. Synchronization mechanism; 501. Connecting seat; 502. Control lever; 5021. Linkage slot; 5022. Connecting gear; 503. Synchronization block; 5031. Conversion slot; 5032. Synchronization slot; 504. Linkage block; 5041. Linkage lever; 5042. Conversion protrusion; 505. Reversing gear. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please refer to Figures 1 to 12 Example 1: This invention proposes a grinding device for elevator parts production, comprising: a mounting assembly 1, which includes a mounting base 101, an electric push rod 102, and a positioning chuck 103, wherein the positioning chuck 103 is rotatably connected to the top of the mounting base 101, and the electric push rod 102 is fixedly mounted on the top of the mounting base 101; and a grinding assembly, which includes a track mechanism 2, a contouring mechanism 3, and a grinding mechanism 4. The track mechanism 2 includes a track base 201, a positioning rod 202, and a synchronizing rod 203. The track base 201 is fixedly installed on the top of the push rod of the electric push rod 102, and the positioning rod 202 is rotatably connected inside the track base 201. The synchronizing rod 203 is rotatably connected to the side of the track base 201. The contouring mechanism 3 includes a displacement seat a301 and a contouring arm 302. The displacement seat a301 is inserted into the inside of the track base 201, and the contouring arm 302 is rotatably connected to the displacement seat a301. The bottom of the grinding mechanism 4 includes a displacement seat b401, a roller frame 402, two transmission rollers 403, a grinding belt 404 and a drive motor 405. The displacement seat b401 is inserted into the inside of the track seat 201, and the roller frame 402 is rotatably connected to the bottom of the displacement seat b401. The two transmission rollers 403 are rotatably connected to the inside of the roller frame 402, and the grinding belt 404 is installed on the outside of the two transmission rollers 403. The drive motor 405 is fixedly installed on the side of the displacement seat b401. The grinding assembly also includes a synchronization mechanism 5, which has two sets and is symmetrical to each other. The synchronization mechanism 5 includes a connecting seat 501, a control lever 502, a synchronization block 503, and a linkage block 504. The connecting seats 501 of the two sets of synchronization mechanisms 5 are fixedly connected to the sides of the displacement seats a301 and b401, respectively. The control lever 502 is rotatably connected inside the connecting seat 501, the synchronization block 503 is rotatably connected inside the connecting seat 501, and the linkage block 504 is inserted into the inside of the connecting seat 501. The synchronization mechanism 5 located on the side of the displacement seat a301 is the driving mechanism, and the synchronization mechanism 5 located on the side of the displacement seat b401 is the driven mechanism.

[0035] The contouring mechanism 3 and the grinding mechanism 4 are symmetrically arranged on both sides of the clamping center of the positioning chuck 103. A drive gear 4051 is provided on the side of the drive motor 405. The drive gear 4051 and the rotating shaft of the roller frame 402 are on the same axis. A grinding gear 4031 is provided on the top of the rotating shaft of one of the transmission rollers 403. The grinding gear 4031 and the drive gear 4051 mesh and transmit power. This design ensures that regardless of the change in the operating angle of the roller frame 402, the teeth of the grinding gear 4031 and the drive gear 4051 are always in a meshing transmission state, guaranteeing the stability of the grinding process. The elevator's tapered components can pass through... The positioning chuck 103 is used for positioning and fixing, which facilitates the subsequent grinding operation of the grinding assembly on the part. The extension and retraction of the electric push rod 102 can drive the overall lifting and lowering of the grinding assembly. By controlling the lowering of the grinding assembly, the grinding belt 404 can be pressed against the side of the conical part for grinding. When the drive motor 405 rotates, the drive gear 4051 of the drive motor 405 can drive one of the transmission rollers 403 to rotate through the grinding gear 4031. Thus, under the cooperation of the two transmission rollers 403 and the grinding belt 404, the grinding belt 404 can move cyclically and perform grinding operation on the surface of the conical part, which is convenient and flexible to use.

[0036] The contouring arm 302 has a contact wheel 3021 on its side, and a return torsion spring is provided on the outside of the shaft of the contouring arm 302. Under the action of the return torsion spring, when the contouring arm 302 and the contact wheel 3021 are not subjected to external force, the contouring arm 302 is in a vertical state. In use, the grinding assembly has the function of contouring tapered parts, thereby adaptively adjusting the grinding angle according to the inclination of the tapered surface, ensuring that the grinding belt 404 is always parallel to the grinding surface, thus improving the quality of grinding. Under the action of the return torsion spring, the contouring arm 302 is in a vertically downward state. Furthermore, the contouring arm 302 can also make the roller frame 402 vertically downward through two sets of synchronous mechanisms 5. When the grinding assembly moves down, the contact wheel 3021 of the contouring arm 302 will contact the surface of the conical part. Under the contact and squeezing action of the surface of the conical part, the contouring arm 302 will rotate to adapt to the surface inclination of the conical part, and the displacement seat a301 will move to one side to avoid and compress the reset top spring 3012, which can prevent the device from jamming. The contouring mechanism 3 can realize the state control of the grinding mechanism 4 through the above actions, thereby realizing the function of contour grinding.

[0037] Both displacement seats a301 and b401 have internal movable protrusions 3011, and the positioning rod 202 has an externally spirally oriented movable groove 2021. The movable groove 2021 has two sections, which are symmetrical to each other. The movable protrusions 3011 of displacement seats a301 and b401 are respectively inserted into the interior of the two sections of the movable groove 2021. Both displacement seats a301 and b401 have a return spring 3012 on their sides, with one of the return springs 3012 having two ends abutting against the interior of the track seat 201 and the positioning rod 202. On the side of the shift seat a301, the two ends of another return top spring 3012 abut against the inside of the track seat 201 and the side of the shift seat b401, respectively. In use, when the shift seat a301 moves, the moving protrusion 3011 inside it can drive the positioning rod 202 to rotate through the moving groove 2021. When the positioning rod 202 rotates, the moving groove 2021 can drive the shift seat b401 to move synchronously through the moving protrusion 3011 of the shift seat b401. The shift seat b401 and the shift seat a301 move in opposite directions, realizing the contouring action in the lateral position.

[0038] The synchronization mechanism 5 also includes a reversing gear 505, which is rotatably connected inside the connecting seat 501. The reversing gear 505 changes the swing direction of the control lever 502 during transmission, ensuring that the control lever 502 swings outwards. This design avoids interference between the two control levers 502 during contour control, ensuring stable operation. The control lever 502 has a connecting gear 5022 on its external shaft, and both the contour arm 302 and the roller frame 402 have control gears 3022 on their external shafts. The reversing gear 505 of the driving mechanism meshes with the control gear 3022 of the contour arm 302 and the connecting gear 5022 of the control lever 502 on both sides. Similarly, the reversing gear 505 of the driven mechanism meshes with the control gear 3022 of the roller frame 402 and the connecting gear 5022 of the control lever 502 on both sides. The control lever 502 has a linkage groove 5021 inside, and the linkage block 504 has a linkage lever 5041 on its side. The linkage lever 5041 is inserted into the linkage groove 502. Inside the linkage block 504, a conversion protrusion 5042 is provided, and a spiral conversion groove 5031 is provided on the outside of the synchronization block 503. The conversion protrusion 5042 is inserted into the inside of the conversion groove 5031. The cross-sectional shape of the synchronization rod 203 is a regular polygon. The synchronization block 503 has a synchronization groove 5032 inside, and the part of the regular polygonal cross-section of the synchronization rod 203 is inserted into the inside of the synchronization groove 5032. In use, when the contouring arm 302 rotates to adapt to the surface inclination of the tapered accessory, the following actions will occur inside the active mechanism: the control gear 3022 of the contouring arm 302 can drive the reversing gear 505 of the active mechanism to rotate. When the reversing gear 505 rotates, it can pass through The connecting gear 5022 drives the control lever 502 to rotate. When the control lever 502 rotates, the linkage slot 5021 can drive the linkage block 504 to move outward (away from the conical part) through the linkage lever 5041. When the linkage block 504 moves, the conversion protrusion 5042 can drive the synchronization block 503 to rotate through the conversion slot 5031. When the synchronization block 503 rotates, it can drive the synchronization rod 203 to rotate through the synchronization slot 5032. At the same time, the following actions occur inside the driven mechanism: when the synchronization rod 203 rotates, it can drive the synchronization block 503 of the driven mechanism to rotate through the synchronization slot 5032. When the synchronization block 503 rotates, it can drive the linkage block 504 to move outward. When moving, it can drive the control lever 502 to rotate. When the control lever 502 rotates, it can drive the roller frame 402 to rotate through the reversing gear 505. Due to the above actions, the rotation direction of the contouring arm 302 and the roller frame 402 is also opposite, and the rotation angle of the contouring arm 302 and the roller frame 402 is the same. Thus, the contouring arm 302 can be used to adjust the angle of the grinding belt 404. The grinding belt 404 can always be parallel to the surface of the conical part during grinding, which improves the grinding quality. The contouring arm 302 can adaptively adjust its own angle according to the inclination of the conical part, so the roller frame 402 can also be adjusted synchronously. It can adapt to the rapid grinding of different types of conical parts.

[0039] The specific usage and function of this embodiment: In this invention, the conical component of the elevator can be positioned and fixed by the positioning chuck 103. The positioning chuck 103 can drive the conical component of the elevator to rotate to achieve the overall grinding operation, which facilitates the subsequent grinding operation of the component by the grinding assembly. The extension and retraction of the electric push rod 102 can drive the grinding assembly to rise and fall as a whole. By controlling the grinding assembly to descend, the grinding belt 404 can be pressed against the side of the conical component for grinding. When the drive motor 405 rotates, the drive gear 4051 of the drive motor 405 can drive one of the transmission rollers 403 to rotate through the grinding gear 4031, thereby causing the two transmission rollers 403 and the grinding belt 404 to rotate. Under the combined action of 04, the grinding belt 404 can circulate and perform grinding operations on the surface of the conical part. The grinding assembly has a contouring function for the conical part, thereby adaptively adjusting the grinding angle according to the inclination of the conical surface, ensuring that the grinding belt 404 is always parallel to the grinding surface, thus improving the quality of the grinding process. Under the action of the return torsion spring, the contouring arm 302 is in a vertically downward state, and the contouring arm 302 can also make the roller frame 402 in a vertically downward state through two sets of synchronous mechanisms 5. When the grinding assembly moves down, the contact wheel 3021 of the contouring arm 302 will abut against the surface of the conical part. Under the abutment and compression action of the surface of the conical part, the contouring arm 302 The device rotates to adapt to the surface inclination of the tapered accessory, and the displacement seat a301 moves to one side to avoid and compress the return spring 3012, preventing the device from jamming. The contouring mechanism 3 can control the state of the grinding mechanism 4 through the above actions. When the displacement seat a301 moves, its internal moving protrusion 3011 can drive the positioning rod 202 to rotate through the moving groove 2021. When the positioning rod 202 rotates, the moving groove 2021 can drive the displacement seat b401 to move synchronously through the moving protrusion 3011 of the displacement seat b401. The displacement seat b401 and the displacement seat a301 move in opposite directions, realizing the contouring action in the lateral position. When the contouring arm 302... When the surface inclination of the tapered accessory is adjusted by rotation, the following actions occur inside the active mechanism: the control gear 3022 of the contour arm 302 can drive the reversing gear 505 of the active mechanism to rotate. When the reversing gear 505 rotates, it can drive the control lever 502 to rotate through the connecting gear 5022. When the control lever 502 rotates, the linkage groove 5021 can drive the linkage block 504 to move outward (away from the tapered accessory) through the linkage lever 5041. When the linkage block 504 moves, the conversion protrusion 5042 can drive the synchronization block 503 to rotate through the conversion groove 5031. When the synchronization block 503 rotates, it can drive the synchronization rod 203 to rotate through the synchronization groove 5032.Meanwhile, the following actions occur inside the driven mechanism: when the synchronizing rod 203 rotates, it drives the synchronizing block 503 of the driven mechanism to rotate through the synchronizing groove 5032. When the synchronizing block 503 rotates, it drives the linkage block 504 to move outward. When the linkage block 504 moves, it drives the control lever 502 to rotate. When the control lever 502 rotates, it drives the roller frame 402 to rotate through the reversing gear 505. Due to the above actions, the rotation directions of the contouring arm 302 and the roller frame 402 are opposite, and the rotation angles of the contouring arm 302 and the roller frame 402 are the same. This realizes the contouring adjustment function of the grinding belt 404 using the contouring arm 302. During grinding, the grinding belt 404 can always be parallel to the surface of the conical part. The contouring arm 302 can adaptively adjust its own angle according to the inclination of the conical part, so the roller frame 402 can also be synchronously adjusted, enabling rapid grinding of different types of conical parts.

Claims

1. A grinding device for producing elevator parts, comprising: The mounting assembly (1) includes a mounting base (101), an electric push rod (102), and a positioning chuck (103). The positioning chuck (103) is rotatably connected to the top of the mounting base (101), and the electric push rod (102) is fixedly mounted on the top of the mounting base (101). The assembly is characterized by further including a grinding assembly, which includes a track mechanism (2), a contouring mechanism (3), and a grinding mechanism (4). The track mechanism (2) includes a track seat (201), a positioning rod (202), and a synchronizing rod (203). The track seat (201) is fixedly installed on the top of the push rod of the electric push rod (102), and the positioning rod (202) is rotatably connected to the inside of the track seat (201). The synchronizing rod (203) is rotatably connected to the side of the track seat (201). The contouring mechanism (3) includes a displacement seat a (301) and a contouring arm (302). The displacement seat a (301) is inserted into the inside of the track seat (201), and the contouring arm (302) is rotatably connected to the displacement seat a (301). 1) The bottom of the grinding mechanism (4) includes a displacement seat b (401), a roller frame (402), two transmission rollers (403), a grinding belt (404) and a drive motor (405). The displacement seat b (401) is inserted into the inside of the track seat (201), and the roller frame (402) is rotatably connected to the bottom of the displacement seat b (401). The two transmission rollers (403) are rotatably connected to the inside of the roller frame (402), and the grinding belt (404) is installed on the outside of the two transmission rollers (403). The drive motor (405) is fixedly installed on the side of the displacement seat b (401). The grinding assembly also includes a synchronization mechanism (5). The synchronization mechanism (5) has two sets, and the two sets of synchronization mechanisms (5) are symmetrical to each other. The synchronization mechanism (5) includes a connecting seat (501), a control lever (502), a synchronization block (503), and a linkage block (504). The connecting seats (501) of the two sets of synchronization mechanisms (5) are respectively fixedly connected to the sides of displacement seats a (301) and displacement seats b (401). The control lever (502) is rotatably connected to the inside of the connecting seat (501). The synchronization block (503) is rotatably connected to the inside of the connecting seat (501), and the linkage block (504) is inserted into the inside of the connecting seat (501). The synchronization mechanism (5) located on the side of displacement seat a (301) is the active mechanism, and the synchronization mechanism (5) located on the side of displacement seat b (401) is the driven mechanism. The displacement seat a (301) and displacement seat b (401) are both provided with a movable protrusion (3011) inside, and the positioning rod (202) is provided with a spiral moving groove (2021) outside. The moving groove (2021) is provided with two sections, and the two sections of the moving groove (2021) are symmetrical to each other. The movable protrusion (3011) of displacement seat a (301) and displacement seat b (401) are respectively inserted into the interior of the two sections of the moving groove (2021). The synchronization mechanism (5) also includes a reversing gear (505), which is rotatably connected inside the connecting seat (501). A connecting gear (5022) is provided outside the rotating shaft of the control lever (502), and control gears (3022) are provided outside the rotating shafts of the contour arm (302) and the roller frame (402). The reversing gear (505) of the active mechanism meshes with the control gear (3022) of the contour arm (302) and the connecting gear (5022) of the active mechanism control lever (502) on both sides, and the reversing gear (505) of the driven mechanism meshes with the control gear (3022) of the roller frame (402) and the connecting gear (5022) of the driven mechanism control lever (502) on both sides.

2. The grinding device for producing elevator parts according to claim 1, characterized in that, The contour arm (302) has a contact wheel (3021) on its side, and a return torsion spring is provided on the outside of the shaft of the contour arm (302). Under the action of the return torsion spring, when the contour arm (302) and the contact wheel (3021) are not subjected to external force, the contour arm (302) is in a vertical state.

3. The grinding device for producing elevator parts according to claim 2, characterized in that, Both displacement seat a (301) and displacement seat b (401) are provided with a reset top spring (3012) on their sides. One of the reset top springs (3012) has its two ends abutting against the inside of the track seat (201) and the side of displacement seat a (301), respectively. The other reset top spring (3012) has its two ends abutting against the inside of the track seat (201) and the side of displacement seat b (401), respectively.

4. The grinding device for producing elevator parts according to claim 3, characterized in that, The control lever (502) has a linkage slot (5021) inside, and the linkage block (504) has a linkage lever (5041) on its side, with the linkage lever (5041) inserted into the linkage slot (5021).

5. A grinding device for producing elevator parts according to claim 4, characterized in that, The linkage block (504) has a conversion protrusion (5042) inside, and the synchronization block (503) has a spiral conversion groove (5031) outside, with the conversion protrusion (5042) inserted into the inside of the conversion groove (5031).

6. A grinding device for producing elevator parts according to claim 5, characterized in that, The cross-sectional shape of the synchronizing rod (203) is a regular polygon, and the synchronizing block (503) has a synchronizing groove (5032) inside. The part of the synchronizing rod (203) with the regular polygonal cross-section is inserted into the synchronizing groove (5032).

7. A grinding device for producing elevator parts according to claim 6, characterized in that, The contouring mechanism (3) and the grinding mechanism (4) are symmetrically arranged on both sides of the clamping center of the positioning chuck (103), and the side of the drive motor (405) is provided with a drive gear (4051). The shafts of the drive gear (4051) and the roller frame (402) are on the same axis. The top of the shaft of one of the transmission rollers (403) is provided with a grinding gear (4031). The grinding gear (4031) and the drive gear (4051) mesh and transmit power.

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