Expansion valve grinding machine

Abstract

The utility model provides an expansion valve polisher which is applied to the technical field of polishers and comprises a polishing mechanism and a moving mechanism, and the polishing mechanism comprises an upper polishing assembly and a lower polishing assembly which are respectively used for polishing the upper surface and the lower surface of a workpiece; a clamping block of the moving mechanism is in a long strip shape and used for clamping, fixing and moving the multiple workpieces, and the multiple workpieces sequentially pass through the grinding mechanism to be ground. An auxiliary plate and a transferring mechanism are arranged beside the grinding mechanism, the transferring mechanism is used for conducting guiding and shaping on the multiple workpieces and pushing the multiple shaped workpieces to the auxiliary plate, and a guiding groove used for guiding the workpieces is formed in the auxiliary plate. The multiple workpieces are arranged and shaped through the transferring mechanism, so that the moving mechanism can clamp the multiple workpieces at a time, the moving mechanism drives the multiple workpieces to sequentially pass through the grinding mechanism, the grinding efficiency is improved, the starting and stopping frequency of a driving part of the grinding mechanism is reduced, and the service life is prolonged.

Description

An expansion valve grinding machine Technical Field

[0001] This utility model belongs to the field of grinding machine technology, specifically relating to an expansion valve grinding machine. Background Technology

[0002] Grinding machines are used for grinding materials and are widely used in the mold industry for precision machining and surface polishing. For automotive expansion valves, surface grinding and polishing are required during the production process.

[0003] In existing technologies, most workpieces are polished by handheld grinders, which is labor-intensive and generates dust that seriously affects the health of workers. Furthermore, most existing benchtop grinders are designed to hold individual workpieces in place with clamps before grinding, resulting in low efficiency and frequent start-stop cycles that significantly shorten their lifespan. Summary of the Invention

[0004] In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide an expansion valve grinding machine, which arranges and shapes multiple workpieces through a transfer mechanism, so that the moving mechanism can clamp multiple workpieces at one time, and the moving mechanism drives multiple workpieces to pass through the grinding mechanism in sequence. This not only improves the grinding efficiency but also reduces the start and stop frequency of the grinding mechanism's drive components, which is beneficial to extending the service life.

[0005] An expansion valve grinding machine includes a grinding mechanism and a moving mechanism. The grinding mechanism includes an upper grinding component and a lower grinding component, which are symmetrically arranged vertically and vertically, respectively used for grinding the upper and lower surfaces of the workpiece. The clamping block of the moving mechanism is elongated and used to clamp and move multiple workpieces that are distributed in an elongated shape, so that the multiple workpieces pass through the grinding mechanism in sequence to complete the grinding operation on the upper and lower surfaces of the workpieces. An auxiliary plate and a transfer mechanism are arranged on the side of the grinding mechanism. The transfer mechanism is used to guide and shape the multiple workpieces to achieve an elongated distribution of the multiple workpieces, and push the shaped multiple workpieces to the auxiliary plate. The auxiliary plate is provided with guide grooves for guiding the workpieces.

[0006] Preferably, the upper grinding assembly includes a second motor and a grinding component, wherein the grinding component is driven to rotate by the second motor, and the second motor and the grinding component are driven to move up and down by a fifth cylinder.

[0007] Preferably, cylinder five is mounted on a bracket, and the bracket is equipped with a guide rod that can move up and down. The bottom of the guide rod and the telescopic end of cylinder five are both connected to an adjusting seat, and motor two is mounted on the adjusting seat.

[0008] Preferably, the moving mechanism includes a translation component for driving the clamping component to achieve reciprocating translational motion. The translation component includes a motor, a rotating wheel, a transmission belt, a connecting plate, a slide block, and a slide rail. Both ends of the transmission belt are connected to the rotating wheel, one of which is driven to rotate by the motor. The connecting plate is mounted on the transmission belt and connected to the slide block. The slide block is slidably connected to the slide rail. The clamping component is connected to the slide block. The motor, rotating wheel, and slide rail are all mounted on a support frame, which is positioned above the grinding mechanism.

[0009] Preferably, the clamping assembly includes a connecting rod, a second slide block, a first cylinder, a second cylinder, a clamping block, and a second slide rail. The connecting rod is connected to the first slide block, and the first cylinder and the second slide rail are mounted on the connecting rod. The telescopic end of the first cylinder is connected to the second slide block, and the second slide block is slidably connected to the second slide rail. The second cylinder is mounted on the second slide block, and the telescopic end of the second cylinder is connected to a clamping block for clamping the workpiece.

[0010] Preferably, the transfer mechanism includes a rodless cylinder, a slide plate, a push block, and a support plate. The rodless cylinder is mounted on the support plate, and the support plate is provided with a baffle for guiding and shaping the workpiece. The slide plate is located on the slide table of the rodless cylinder, and the push block is connected to the slide plate. The push block is used to push the workpiece on the support plate toward the grinding mechanism. The push block is provided with a slot that engages with the baffle.

[0011] Preferably, the transfer mechanism is installed at the end of the transmission mechanism one. The transfer mechanism also includes a fixed plate, a slide rail three, a slide block three, and a cylinder four. The cylinder four and the slide block three are both installed on the fixed bracket of the transmission mechanism one. The telescopic end of the cylinder four is connected to the bottom of the bearing plate through the fixed plate. The bearing plate is slidably connected to the slide block three through the slide rail three.

[0012] Preferably, a second transmission mechanism is configured on the side of the grinding mechanism away from the first transmission mechanism. The transmission directions of the first and second transmission mechanisms are opposite. The transfer mechanism is used to carry the workpieces transmitted from the first transmission mechanism and push the shaped workpieces onto the auxiliary plate by the push block. The moving mechanism is used to clamp and fix the workpieces on the auxiliary plate and drive the workpieces to pass through the grinding mechanism in sequence to complete the grinding operation, and to move the ground workpieces onto the second transmission mechanism for unloading and transmission.

[0013] Preferably, the second transmission mechanism is equipped with a lifting plate, which is driven by a third cylinder to move up and down. The third cylinder is mounted on a fixed frame, which is positioned above the second transmission mechanism.

[0014] Preferably, the length of the clamping block is adapted to the width of transmission mechanism one and transmission mechanism two.

[0015] The beneficial effects of this utility model are: the expansion valve grinding machine arranges and shapes multiple workpieces through the structural design of the transfer mechanism, so that the clamping block of the moving mechanism can clamp multiple workpieces at one time, and the moving mechanism can drive multiple workpieces to pass through the grinding mechanism in sequence. One clamping and moving action of the moving mechanism can realize the grinding operation of multiple workpieces, which not only improves the grinding efficiency but also reduces the start and stop frequency of the driving components in the grinding mechanism, which is conducive to extending the service life.

[0016] Through the structural design of the transfer mechanism and auxiliary plate, multiple workpieces can be arranged in a long strip, with corresponding long strip clamping blocks to facilitate clamping and fixing of multiple workpieces. Furthermore, relying on the symmetrical structural design of the upper and lower grinding components, when the moving mechanism clamps multiple workpieces and passes through the grinding mechanism, the grinding operation of the upper and lower surfaces can be completed simultaneously, ensuring the grinding efficiency of the workpieces.

[0017] By setting up transmission mechanism one and transmission mechanism two, combined with the spatial layout of transfer mechanism and moving mechanism, automatic loading and unloading of workpieces can be achieved, reducing manual intervention and further reducing labor costs. At the same time, automation can improve work efficiency. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 is a structural schematic diagram of this utility model;

[0020] Figure 2 is a front view of this utility model;

[0021] Figure 3 is a top view of this utility model;

[0022] Figure 4 is an enlarged view of point A in structural schematic diagram 1 of this utility model;

[0023] Figure 5 is a schematic diagram of the transfer mechanism of this utility model;

[0024] Figure 6 is a side view of the transfer mechanism of this utility model;

[0025] Figure 7 is a schematic diagram of the grinding mechanism of this utility model.

[0026] The diagram is labeled as follows: 1. Transmission Mechanism 1; 2. Transfer Mechanism; 201. Rodless Cylinder; 202. Slide Plate; 203. Push Block; 204. Bearing Plate; 205. Fixing Plate; 206. Slide Rail 3; 207. Slide Base 3; 208. Cylinder 4; 3. Grinding Mechanism; 301. Cylinder 5; 302. Guide Rod; 303. Bracket; 304. Motor 2; 305. Grinding Part; 306. Adjusting Seat; 4. Transmission Mechanism 2; 5. Moving Mechanism; 501. Motor 1; 502. Rotating Wheel; 503. Transmission Belt; 504. Connecting Plate; 505. Slide Base 1; 506. Slide Rail 1; 507. Connecting Rod; 508. Slide Base 2; 509. Cylinder 1; 510. Cylinder 2; 511. Clamping Block; 512. Slide Rail 2; 6. Fixing Frame; 7. Lifting Plate; 8. Cylinder 3. Detailed Implementation

[0027] Example 1

[0028] As shown in Figure 1, an expansion valve grinding machine includes a transmission mechanism 1, a transfer mechanism 2, a grinding mechanism 3, a transmission mechanism 4, and a moving mechanism 5. The grinding mechanism 3 is located between the transmission mechanism 1 and the transmission mechanism 4, and the transmission directions of the transmission mechanism 1 and the transmission mechanism 4 are opposite. The transfer mechanism 2 is located at the end of the transmission mechanism 1 and is used to transfer the workpiece transmitted from the transmission mechanism 1 to the grinding area where the grinding mechanism 3 is located.

[0029] The grinding mechanism 3 includes an upper grinding component and a lower grinding component. The upper grinding component is mounted above the lower grinding component via a support frame. The upper and lower grinding components are symmetrically arranged and can move relative to each other. The upper and lower grinding parts 305 distributed vertically and vertically perform grinding operations on the upper and lower surfaces of the workpiece. The support frame is also equipped with a moving mechanism 5, which is used to clamp and fix the workpiece and move the workpiece sequentially through the grinding area. After grinding by the grinding mechanism 3, the workpiece is moved to the second transmission mechanism 4 for automatic unloading.

[0030] Example 2

[0031] As shown in Figure 5, the structure of this embodiment is basically the same as that of the first embodiment. The difference is that the transfer mechanism 2 in this embodiment includes a rodless cylinder 201, a sliding plate 202, a push block 203 and a support plate 204. The rodless cylinder 201 is installed on the support plate 204, and the support plate 204 is equipped with a stop bar for shaping the workpiece transferred from the transfer mechanism 1, so as to facilitate the clamping component of the moving mechanism 5 to clamp it.

[0032] The slide plate 202 is located on the slide table of the rodless cylinder 201. A push block 203 is connected to the slide plate 202. The push block 203 is used to push the workpiece on the support plate 204 towards the grinding mechanism 3. Furthermore, the push block 203 is provided with a groove for engaging with the stop bar, which facilitates the stability of the movement of the push block 203. It should be noted that an auxiliary plate is provided between the grinding mechanism 3 and the transfer mechanism 2. The auxiliary plate is provided with a guide groove for guiding the workpiece.

[0033] In addition, as shown in Figure 6, the transfer mechanism 2 also includes a fixed plate 205, a slide rail 206, a slide block 207, and a cylinder 208. The cylinder 208 and the slide block 207 are both mounted on the fixed bracket of the transfer mechanism 1. The telescopic end of the cylinder 208 is connected to the bottom of the support plate 204 through the fixed plate 205. The support plate 204 is slidably connected to the slide block 207 through the slide rail 206.

[0034] When the receiving plate 204 of the transfer mechanism 2 contacts the end of the transmission mechanism 1, it receives the workpiece from the transmission mechanism 1. The workpiece is limited and shaped by the stop strip on the receiving plate 204. Then, the cylinder 208 drives the receiving plate 204 to move away from the transmission mechanism 1, so that the workpiece can correspond to the grinding area of ​​the grinding mechanism 3, which facilitates the transfer of the workpiece to the auxiliary plate. The rodless cylinder 201 drives the push block 203 to push the workpiece on the receiving plate 204 to the auxiliary plate. Then, the cylinder 208 drives the receiving plate 204 to reset and continue to receive the workpiece from the transmission mechanism 1. This cycle repeats to realize the transfer of the workpiece from the transmission mechanism 1 to the auxiliary plate.

[0035] Example 3

[0036] As shown in Figures 1 to 4, the structure of this embodiment is basically the same as that of embodiment 2. The difference is that when the workpiece is located on the auxiliary plate in this embodiment, the workpiece is clamped and fixed by the moving mechanism 5 and moved from the auxiliary plate to the transmission mechanism 2 4. During the movement, multiple workpieces can pass through the grinding area in sequence, and the grinding mechanism 3 grinds the upper and lower surfaces of the workpiece.

[0037] Specifically, the moving mechanism 5 includes a motor 501, a rotating wheel 502, a transmission belt 503, a connecting plate 504, a slide 505, a slide rail 506, a connecting rod 507, a slide 508, a cylinder 509, a cylinder 510, a clamping block 511, and a slide rail 512.

[0038] The motor 501, rotating wheel 502, transmission belt 503, connecting plate 504, slide block 505, and slide rail 506 constitute a translation assembly, which drives the clamping assembly to reciprocate between the auxiliary plate and the transmission mechanism 4. The connecting rod 507, slide block 508, cylinder 509, cylinder 510, clamping block 511, and slide rail 512 constitute a clamping assembly, wherein two clamping blocks 511 are arranged opposite to each other, which are used to clamp or release the workpiece.

[0039] Specifically, as shown in Figures 2 and 3, the two ends of the transmission belt 503 are connected to the rotating wheel 502 respectively. One of the rotating wheels 502 is driven to rotate by the motor 501 through the reducer. The connecting plate 504 is installed on the transmission belt 503 and is connected to the slide block 505. The slide block 505 is slidably connected to the slide rail 506. The motor 501, the rotating wheel 502, and the slide rail 506 are all installed on the support frame.

[0040] As shown in Figure 4, the connecting rod 507 is connected to the slide block 505. The connecting rod 507 is equipped with a cylinder 509 and a slide rail 512. The telescopic end of the cylinder 509 is connected to the slide block 508. The slide block 508 is slidably connected to the slide rail 512. The slide block 508 is equipped with a cylinder 510. The telescopic end of the cylinder 510 is connected to a clamping block 511 for clamping the workpiece.

[0041] Please refer to Figure 1 for details. The length of the clamping block 511 corresponds to the width of the transmission mechanism 1 and the transmission mechanism 4. It is used to clamp multiple workpieces at once to improve grinding efficiency.

[0042] Motor 501 drives the connected rotating wheel 502 to rotate, and the transmission belt 503 drives another rotating wheel 502 to rotate. Through the interaction between the rotating wheel 502 and the transmission belt 503, the position of the connecting plate 504 is adjusted by the transmission belt 503.

[0043] Furthermore, cylinder 509 is used to adjust the vertical position of clamping block 511, and cylinder 510 is used to adjust the relative distance between the two clamping blocks 511. By adjusting the position of clamping block 511, the clamping block 511 can clamp and fix the workpiece on the auxiliary plate. Then, it is driven to move laterally by transmission belt 503, and multiple workpieces on clamping block 511 pass through grinding mechanism 3 in sequence to grind the upper and lower surfaces. Then, they are moved to transmission mechanism 4 and the ground workpieces are placed on transmission mechanism 4 to facilitate automatic unloading by transmission mechanism 4.

[0044] Please refer to Figures 1 and 4. It should be noted that the two cylinders 510 that control the horizontal movement of the two clamping blocks 511 are synchronously driven by existing synchronous control technology. At the same time, the two cylinders 509 that control the vertical movement of the two clamping blocks 511 are also synchronously driven by existing synchronous control technology, thereby achieving synchronous movement of the two clamping blocks 511.

[0045] Example 4

[0046] As shown in Figure 7, the structure of this embodiment is basically the same as that of Embodiment 3, except that the upper grinding assembly in this embodiment includes cylinder 301, guide rod 302, bracket 303, motor 304, grinding component 305, and adjusting seat 306. Cylinder 301 is mounted on bracket 303, which is equipped with a guide rod 302 capable of vertical movement. The bottom of guide rod 302 and the telescopic end of cylinder 301 are connected to adjusting seat 306. Guide rod 302 is used to improve the stability of adjusting seat 306 during vertical movement. Motor 304 is mounted on adjusting seat 306, and the drive end of motor 304 is connected to grinding component 305.

[0047] The grinding part 305 is driven by the second motor 304 to achieve high-speed rotation, thereby performing grinding operations on the surface of the workpiece. Its vertical position is adjusted by the drive end of the fifth cylinder 301, which facilitates position adjustment according to the height of the workpiece.

[0048] Since the upper and lower grinding components are symmetrically arranged, the upper grinding component will be used as an example for structural description, and the lower grinding component will not be described in detail. It should be noted that the bracket 303 of the upper grinding component is connected to the support frame and is mounted above the lower grinding mechanism, while the bracket 303 of the lower grinding component is connected to the fixed bracket of the grinding mechanism 3.

[0049] Example 5

[0050] As shown in Figures 2 and 3, the structure of this embodiment is basically the same as that of embodiment four, except that: in this embodiment, a lifting plate 7 is mounted on the transmission mechanism 2 4 via a fixed frame 6. The lifting plate 7 is driven up and down by a cylinder 3 8, which is installed on the top of the fixed frame 6. The lifting plate 7 is used to prevent the workpieces from moving to the end of the transmission mechanism 2 4. After a certain number of workpieces have accumulated, the lifting plate 7 is removed to allow the workpieces to move to the end of the transmission mechanism 2 4, making it easier for workers to collect the materials.

[0051] Among them, transmission mechanism 1 and transmission mechanism 2 are both transmission belt structures. The transmission function of the transmission belt is achieved by the rotation of gears and chains driven by motors. Their working principle is existing technology and will not be described in detail here.

[0052] Working principle: When using this expansion valve grinding machine, the operator arranges multiple workpieces in a long strip on the transmission mechanism 1. The transmission mechanism 1 transports the workpieces to the transfer mechanism 2. The transfer mechanism 2 contacts the end of the transmission mechanism 1 to receive the workpieces. At this time, the workpieces are arranged and shaped by the baffles on the bearing plate 204 of the transfer mechanism 2. Then, the rodless cylinder 201 drives the push block 203 to push the workpieces onto the auxiliary plate. The guide groove on the auxiliary plate maintains the long strip arrangement of multiple workpieces.

[0053] Then, the translation component of the moving mechanism 5 drives the clamping component to move, and the two clamping blocks 511 clamp and fix multiple workpieces at once. Then, the translation component drives multiple workpieces to pass through the grinding area of ​​the grinding mechanism 3 in sequence. At the same time, the upper grinding component and the lower grinding component of the grinding mechanism approach each other until they contact the upper and lower surfaces of the workpieces. Then, the motor 2 304 drives the grinding part 305 to rotate at high speed to realize the grinding operation of the workpieces.

[0054] The clamping assembly drives the workpieces through the grinding mechanism 3 in sequence, and then moves the ground workpieces to the second transmission mechanism 4. The second transmission mechanism 4 is used to unload the workpieces. Furthermore, the lifting plate 7 can be used to block the workpieces on the second transmission mechanism 4. When the workpieces accumulate to a certain amount, the lifting plate 7 is removed to transfer the workpieces to the end of the second transmission mechanism 4, which is convenient for workers to collect the workpieces.

[0055] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An expansion valve grinding machine, characterized in that, The device includes a grinding mechanism (3) and a moving mechanism (5). The grinding mechanism (3) includes an upper grinding component and a lower grinding component. The upper grinding component and the lower grinding component are symmetrically arranged and are used to grind the upper surface and the lower surface of the workpiece, respectively. The clamping block (511) of the moving mechanism (5) is long and narrow. It is used to clamp and fix multiple workpieces that are distributed in a long strip and move them so that multiple workpieces pass through the grinding mechanism (3) in sequence to complete the grinding operation of the upper and lower surfaces of the workpieces. An auxiliary plate and a transfer mechanism (2) are provided on the side of the grinding mechanism (3). The transfer mechanism (2) is used to guide and shape multiple workpieces to achieve a long strip distribution of multiple workpieces and push the shaped multiple workpieces to the auxiliary plate. The auxiliary plate is provided with a guide groove for guiding the workpieces.

2. The expansion valve grinding machine according to claim 1, characterized in that, The upper grinding assembly includes a second motor (304) and a grinding component (305). The grinding component (305) is driven to rotate by the second motor (304), and the second motor (304) and the grinding component (305) are driven to move up and down by a fifth cylinder (301).

3. The expansion valve grinding machine according to claim 2, characterized in that, The cylinder five (301) is mounted on the bracket (303), and the bracket (303) is equipped with a guide rod (302) that can move up and down. The bottom of the guide rod (302) and the telescopic end of the cylinder five (301) are connected to the adjusting seat (306). The motor two (304) is mounted on the adjusting seat (306).

4. The expansion valve grinding machine according to claim 1, characterized in that, The moving mechanism (5) includes a translation component for driving the clamping component to achieve reciprocating translational motion. The translation component includes a motor (501), a rotating wheel (502), a transmission belt (503), a connecting plate (504), a slide block (505), and a slide rail (506). The two ends of the transmission belt (503) are respectively connected to the rotating wheel (502). One of the rotating wheels (502) is driven to rotate by the motor (501). The connecting plate (504) is installed on the transmission belt (503). The connecting plate (504) is connected to the slide block (505). The slide block (505) is slidably connected to the slide rail (506). The clamping component is connected to the slide block (505). The motor (501), the rotating wheel (502), and the slide rail (506) are all installed on a support frame. The support frame is assumed to be above the grinding mechanism (3).

5. The expansion valve grinding machine according to claim 4, characterized in that, The clamping assembly includes a connecting rod (507), a second slide (508), a first cylinder (509), a second cylinder (510), a clamping block (511), and a second slide rail (512). The connecting rod (507) is connected to the first slide (505). The first cylinder (509) and the second slide rail (512) are mounted on the connecting rod (507). The telescopic end of the first cylinder (509) is connected to the second slide (508). The second slide (508) is slidably connected to the second slide rail (512). The second cylinder (510) is mounted on the second slide (508). The telescopic end of the second cylinder (510) is connected to a clamping block (511) for clamping the workpiece.

6. The expansion valve grinding machine according to claim 1, characterized in that, The transfer mechanism (2) includes a rodless cylinder (201), a slide plate (202), a pusher block (203), and a support plate (204). The rodless cylinder (201) is mounted on the support plate (204), and the support plate (204) is provided with a baffle for guiding and shaping the workpiece. The slide plate (202) is located on the slide table of the rodless cylinder (201), and the pusher block (203) is connected to the slide plate (202). The pusher block (203) is used to push the workpiece on the support plate (204) toward the grinding mechanism (3). The pusher block (203) is provided with a slot for engaging with the baffle.

7. The expansion valve grinding machine according to claim 6, characterized in that, The transfer mechanism (2) is installed at the end of the transmission mechanism (1). The transfer mechanism (2) also includes a fixed plate (205), a slide rail (206), a slide block (207), and a cylinder (208). The cylinder (208) and the slide block (207) are both installed on the fixed bracket of the transmission mechanism (1). The telescopic end of the cylinder (208) is connected to the bottom of the bearing plate (204) through the fixed plate (205). The bearing plate (204) is slidably connected to the slide block (207) through the slide rail (206).

8. The expansion valve grinding machine according to claim 7, characterized in that, The grinding mechanism (3) is equipped with a second transmission mechanism (4) on the side away from the first transmission mechanism (1). The transmission directions of the first transmission mechanism (1) and the second transmission mechanism (4) are opposite. The transfer mechanism (2) is used to carry the workpieces transmitted by the first transmission mechanism (1) and push the shaped workpieces onto the auxiliary plate by the push block (203). The moving mechanism (5) is used to clamp and fix the workpieces on the auxiliary plate and drive the workpieces to pass through the grinding mechanism (3) in sequence to complete the grinding operation, and to move the ground workpieces onto the second transmission mechanism (4) for unloading and transmission.

9. The expansion valve grinding machine according to claim 8, characterized in that, The second transmission mechanism (4) is equipped with a lifting plate (7), which is driven by a third cylinder (8) to move up and down. The third cylinder (8) is mounted on a fixed frame (6), which is mounted above the second transmission mechanism (4).

10. The expansion valve grinding machine according to claim 8, characterized in that, The length of the clamping block (511) is adapted to the width of the transmission mechanism one (1) and the transmission mechanism two (4).

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