Positioning mechanism for hollow pressure transmitting block

Abstract

The utility model belongs to the field of workpiece clamping devices, and particularly relates to a positioning mechanism for a hollow pressure transmitting block. In order to solve the technical problem that in the prior art, when a pneumatic clamp is used for clamping a hollow pressure transmitting block and a grinding disc is used for grinding the side face of the hollow pressure transmitting block, a worker cannot guarantee that the distance between the to-be-ground faces of different hollow pressure transmitting blocks and the grinding disc is constant all the time, and therefore the machining precision of the hollow pressure transmitting block is poor. The utility model provides a positioning mechanism for a hollow pressure transmitting block. The positioning mechanism for the hollow pressure transmitting block comprises two clamping pieces used for clamping the hollow pressure transmitting block, a direct-acting driving device used for driving the two clamping pieces to get close to each other or get away from each other and a supporting table used for supporting the hollow pressure transmitting block, and a positioning shaft used for being inserted into a through hole of the hollow pressure transmitting block to position the hollow pressure transmitting block is arranged on the supporting table. The hollow pressure transmitting block is preliminarily positioned through the positioning shaft, so that it is guaranteed that the distance between the to-be-ground faces and the grinding faces is constant, and the machining precision is improved.

Description

Technical Field

[0001] The utility model belongs to the field of workpiece clamping devices, in particular to a positioning mechanism for a hollow pressure transmission block. Background Art

[0002] The hollow pressure transmission block comprises a rectangular parallelepiped base body, a cylindrical through hole is processed on the base body, a receiving space for receiving diamond powder is arranged inside the base body, and a part of the cylindrical through hole constitutes the receiving space.

[0003] For example, a Chinese utility model patent with authorization announcement number CN2325106Y and authorization announcement date 1999.06.23 discloses a hollow pressure transmission block for synthesizing diamond. The hollow pressure transmission block includes a rectangular substrate with a cylindrical through hole processed on the substrate. A rectangular accommodating space for accommodating diamond powder is provided inside the substrate, and a part of the cylindrical through hole constitutes the accommodating space.

[0004] When processing the hollow pressure transmission block for artificial diamond, it is necessary to grind the six surfaces of the block of the hollow pressure transmission block with a grinding disc to obtain a hollow pressure transmission block with smaller dimensional tolerance, smaller shape and position tolerance and higher end face quality. When grinding the end face of the hollow pressure transmission block, it is necessary to fix the hollow pressure transmission block with a positioning mechanism.

[0005] For example, a Chinese utility model patent with authorization announcement number CN219818937U and authorization announcement date 2023.10.13 discloses an auxiliary adjustment structure (equivalent to a clamping structure) of a pneumatic clamp, including two pneumatic clamps (equivalent to clamping members) and a direct-acting drive device that drives the two pneumatic clamps to move closer to or away from each other. The distance between the two pneumatic clamps is adjusted by the direct-acting drive device to clamp the workpiece to be processed between the pneumatic clamps. Specifically, a thread block is fixedly connected to the bottom of each pneumatic clamp, and the thread blocks of the two pneumatic clamps are threadedly connected to the same forward and reverse threaded column. Both ends of the forward and reverse threaded column are provided with thread segments with different rotation directions. The thread blocks of the two pneumatic clamps are respectively threadedly connected to different thread segments, and the thread block and the forward and reverse threaded column constitute a direct-acting drive device.

[0006] When the auxiliary adjustment structure of the above-mentioned pneumatic clamp is used to clamp the hollow pressure transmission block and the grinding disc is used to grind the side of the hollow pressure transmission block, in one case, the worker places the hollow pressure transmission block on the shell, and the two pneumatic clamps clamp the hollow pressure transmission block. However, since it is impossible for the worker to place the hollow pressure transmission block in the middle of the two pneumatic clamps, and it is impossible for the worker to make the end surface of each hollow pressure transmission block facing the grinding disc (hereinafter referred to as the grinding surface to be ground) parallel to the grinding surface of the grinding disc used to grind the hollow pressure transmission block, the two pneumatic clamps are used to clamp the hollow pressure transmission block. The pneumatic clamps will contact the hollow pressure transmission block successively. The pneumatic clamps that contact the hollow pressure transmission block first will push the hollow pressure transmission block to move, causing the hollow pressure transmission block to move horizontally and rotate, which in turn causes the distance between the grinding surface and the grinding surface of the hollow pressure transmission block to change; in another case, the worker holds the hollow pressure transmission block until the two pneumatic clamps clamp the hollow pressure transmission block. Since the worker's hands cannot be in the same position every time, the distance between the grinding surface and the grinding surface of different pressure transmission blocks is different. When grinding the hollow pressure transmission block, since it is impossible to re-measure the distance between the grinding surface and the grinding surface and adjust the feeding depth of the grinding disc when grinding each hollow pressure transmission block, the grinding depth of different hollow pressure transmission blocks is different, and the processing accuracy is poor. Utility Model Content

[0007] The purpose of the utility model is to provide a positioning mechanism for a hollow pressure transmission block to solve the problem that when the pneumatic clamps in the prior art are used to clamp the hollow pressure transmission block and the grinding disc is used to grind the side of the hollow pressure transmission block, in one case, the worker places the hollow pressure transmission block on the shell, and two pneumatic clamps clamp the hollow pressure transmission block, but since it is impossible for the worker to place the hollow pressure transmission block in the middle of the two pneumatic clamps, and it is impossible for the worker to make the end surface of each hollow pressure transmission block facing the grinding disc (hereinafter referred to as the surface to be ground) parallel to the grinding surface of the grinding disc used to grind the hollow pressure transmission block, the two pneumatic clamps will contact the hollow pressure transmission block successively, and the pneumatic clamp that contacts the hollow pressure transmission block first will Pushing the hollow pressure transmission block to move causes the hollow pressure transmission block to move horizontally and rotate, which in turn causes the distance between the surface to be ground and the grinding surface of the hollow pressure transmission block to change; in another case, the worker holds the hollow pressure transmission block until two pneumatic clamps clamp the hollow pressure transmission block. Since the worker's hands cannot be in the same position every time, the distance between the surface to be ground and the grinding surface of different pressure transmission blocks is different. When grinding the hollow pressure transmission block, it is impossible to re-measure the distance between the surface to be ground and the grinding surface and adjust the feed depth of the grinding disc when grinding each hollow pressure transmission block. Therefore, the grinding depths of different hollow pressure transmission blocks are different, resulting in poor machining accuracy. Technical problems.

[0008] In order to achieve the above-mentioned purpose, the technical solution of the positioning mechanism for the hollow pressure transmission block provided by the utility model is:

[0009] A positioning mechanism for a hollow pressure transmission block includes a clamping structure for clamping the hollow pressure transmission block, the clamping structure includes two clamping parts for clamping the hollow pressure transmission block and a direct-acting drive device for driving the two clamping parts to move closer to or away from each other, and the positioning mechanism for the hollow pressure transmission block also includes a support platform for supporting the hollow pressure transmission block, and the support platform is provided with a positioning shaft for inserting into a through hole of the hollow pressure transmission block to position the hollow pressure transmission block.

[0010] Furthermore, the positioning shaft is an expansion shaft, and the expansion shaft is provided with a power source for controlling the expansion degree of the expansion shaft.

[0011] Furthermore, the positioning shaft is arranged in the middle of the two clamping members.

[0012] Furthermore, the two clamping members are respectively arranged on both sides of the hollow pressure transmission block along the grinding direction of the grinding disc.

[0013] Furthermore, the positioning mechanism for the hollow pressure transmission block also includes a controller for controlling the direct-acting drive device and a detection device for transmitting a signal to the controller after detecting that the positioning shaft is inserted into the hollow pressure transmission block.

[0014] Furthermore, the detection device is an infrared sensor arranged on one side of the positioning shaft.

[0015] Furthermore, the clamping member is provided with a mounting platform, the clamping member is movably mounted on the mounting platform, and the direct-acting drive device is fixedly mounted on the mounting platform.

[0016] Furthermore, a support seat is provided below the support platform, and the height of the support seat and the mounting platform satisfies that the center of one end of the clamping member used to clamp the hollow pressure transmission block coincides with the center of the corresponding end face of the hollow pressure transmission block.

[0017] Furthermore, one of a slide groove and a slider is provided on the mounting platform, the other of the slider or the slide groove is provided on the clamping member, and the clamping member is slidably mounted on the mounting platform through the slider and the slide groove.

[0018] Furthermore, the direct-acting drive device is two direct-acting drive cylinders, and the output end of each direct-acting drive cylinder is respectively connected to different clamping members in a transmission manner. The two clamping members, the two direct-acting drive cylinders and the mounting platform together constitute the clamping structure.

[0019] The beneficial effects of the positioning mechanism for the hollow pressure transmission block of the utility model are as follows: the utility model is an improved invention. The two clamping parts are driven to approach or move away from each other by a direct-acting drive device, so that the two clamping parts can clamp the hollow pressure transmission block; the hollow pressure transmission block is supported by a support table, and the hollow pressure transmission block is positioned by a positioning shaft. When the side of the hollow pressure transmission block is ground by a grinding disc, the distance from the grinding surface of different hollow pressure transmission blocks to the grinding surface of the grinding disc can be ensured to be the same, thereby ensuring the grinding depth of the grinding disc without adjusting the feeding depth of the grinding disc, and improving the processing accuracy of the hollow pressure transmission block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of a positioning mechanism for a hollow pressure transmission block of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure after omitting some parts.

[0022] Description of reference numerals:

[0023] 1. Support table; 2. Hollow pressure transmission block; 3. Mounting frame; 4. Clamping piece; 5. Slider; 6. Cylinder; 7. Mounting table; 8. Expansion shaft. DETAILED DESCRIPTION

[0024] In order to solve the problems raised in the background technology, the main inventive concept of the utility model is: using the positioning axis to perform preliminary positioning of the hollow pressure transmission block, so as to ensure that the distance from the grinding surface of different hollow pressure transmission blocks to the grinding surface of the grinding disc is the same, and without adjusting the feed depth of the grinding disc, the grinding depth of the grinding disc is guaranteed, thereby improving the processing accuracy of the hollow pressure transmission block.

[0025] The present invention is further described in detail below in conjunction with the embodiments.

[0026] Specific embodiments of the positioning mechanism for the hollow pressure transmission block provided by the utility model:

[0027] like Figure 1-2 As shown, the positioning mechanism for the hollow pressure transmission block includes a clamping structure for clamping the hollow pressure transmission block 2, the clamping structure includes two clamping parts 4 for clamping the hollow pressure transmission block 2 and a direct-acting drive device for driving the two clamping parts 4 to move closer to or away from each other, and the positioning mechanism for the hollow pressure transmission block also includes a support platform 1 for supporting the hollow pressure transmission block, and the support platform 1 is provided with a positioning shaft for inserting into the through hole of the hollow pressure transmission block 2 to position the hollow pressure transmission block 2.

[0028] Specifically, the positioning shaft is an expansion shaft 8, and the expansion shaft 8 is provided with a power source for controlling the expansion degree of the expansion shaft 8, and the power source is a mechanism such as a cylinder or a hydraulic cylinder arranged in the support platform 1. Since the expansion shaft 8, the support platform 1 and the power source arranged in the support platform 1 are prior art, they are not described here. The hollow pressure transmission block 2 can be fixed by utilizing the inner wall of the through hole of the hollow pressure transmission block 2 through the expansion shaft 8, so as to better position the hollow pressure transmission block 2 and improve the processing accuracy. However, in other specific embodiments, the positioning shaft can also be a positioning cylinder that is clearance-matched with the inner wall of the through hole of the hollow pressure transmission block 2.

[0029] The two clamping members 4 are driven to move toward or away from each other by a direct-acting drive device, so that the two clamping members 4 can clamp the hollow pressure transmission block 2; the hollow pressure transmission block is supported by the support platform 1, and the hollow pressure transmission block 2 is positioned by the positioning shaft. When the side of the hollow pressure transmission block 2 is ground by the grinding wheel, the distance from the grinding surface of different hollow pressure transmission blocks 2 to the grinding surface of the grinding wheel can be ensured to be the same, so that the grinding depth of the grinding wheel is ensured without adjusting the feeding depth of the grinding wheel, and the processing accuracy of the hollow pressure transmission block 2 is improved. Specifically, after the hollow pressure transmission block 2 is positioned by the positioning shaft, the two clamping members 4 are driven to move toward each other by a direct-acting drive device, so that the two clamping members 4 clamp the hollow pressure transmission block 2, and the hollow pressure transmission block 2 is fixed. At the same time, it can also avoid the hollow pressure transmission block 2 from rotating slightly when being ground, and further improve the processing accuracy of the hollow pressure transmission block 2.

[0030] When the positioning shaft is an expansion shaft 8, the hollow pressure transmission block 2 is supported by the support platform 1, and the expansion degree of the expansion shaft 8 inserted into the through hole of the hollow pressure transmission block 2 is controlled by the power source, so that the expansion shaft 8 is used to achieve preliminary positioning of the hollow pressure transmission block 2, avoiding the clamping part 4 from pushing the hollow pressure transmission block 2 to move, ensuring the grinding depth of the grinding disc, and thus improving the processing accuracy of the hollow pressure transmission block 2.

[0031] When using the positioning mechanism for the hollow pressure transmission block in the present embodiment, first, place the hollow pressure transmission block 2 from top to bottom on the support platform 1, while ensuring that the expansion shaft 8 penetrates into the through hole of the hollow pressure transmission block 2; then, control the expansion of the expansion shaft 8 through a power source, and use the expansion shaft 8 to perform preliminary positioning on the hollow pressure transmission block 2; finally, control the two clamps 4 to clamp the hollow pressure transmission block 2 through a direct-acting drive device.

[0032] like Figure 1-2As shown, in order to simplify the structure, as a specific embodiment, the positioning shaft is set in the middle of the two clamping members 4, and the positional relationship between the positioning shaft and the two clamping members 4 satisfies: the two clamping members 4 are in contact with the opposite two end surfaces of the hollow pressure transmission block 2 at the same time. Specifically, the two clamping members 4 can be moved towards each other at the same speed to ensure that the two clamping members 4 are in contact with the opposite two end surfaces of the hollow pressure transmission block 2 at the same time. Of course, in other specific embodiments, the speed of one clamping member 4 can also be set to twice the speed of the other clamping member 4, and the distance between the positioning shaft and the clamping member 4 with a faster speed is twice the distance from the clamping member 4 with a slower speed. Alternatively, in other specific embodiments, one clamping member 4 can also be made to contact the hollow pressure transmission block 2 first, and then the other clamping member 4 can be made to contact the hollow pressure transmission block 2. After both clamping members 4 are in contact with the hollow pressure transmission block 2, the two clamping members 4 move again and clamp the hollow pressure transmission block 2 together. In this embodiment, the manner in which the clamping member 4 clamps the hollow pressure transmission block 2 is not limited, as long as the clamping member 4 can clamp the hollow pressure transmission block 2 on the positioning shaft and prevent the hollow pressure transmission block 2 from rotating on the positioning shaft.

[0033] like Figure 1-2 As shown, in order to facilitate the use of the assembly line to process the hollow pressure transmission block 2, as a specific embodiment, the positioning mechanism for the hollow pressure transmission block also includes a controller for controlling the direct drive device and the power source, and the positioning mechanism for the hollow pressure transmission block also includes a detection device for transmitting a signal to the controller after detecting that the expansion shaft 8 is inserted into the hollow pressure transmission block 2. Specifically, the detection device is an infrared sensor (not shown in the figure) arranged on one side of the expansion shaft 8, and the infrared sensor is installed on the mounting frame 3. The structure is simple, and the infrared sensor can be used to easily detect whether the hollow pressure transmission block 2 is located at the set position, that is, whether the expansion shaft 8 is inserted into the hollow pressure transmission block 2.

[0034] Of course, in other specific embodiments, a pressure sensor can also be arranged on the support platform 1. The pressure sensor constitutes the detection device. When the expansion shaft 8 is inserted into the hollow pressure transmission block 2 and the support platform 1 supports the hollow pressure transmission block 2, the pressure sensor can sense the pressure of the hollow pressure transmission block 2, thereby being able to determine the position of the hollow pressure transmission block 2 based on the pressure sensor.

[0035] Of course, in other specific embodiments, the operation can also be performed manually. After the expansion shaft 8 is inserted into the hollow pressure transmission block 2, the worker controls the power source and expands the expansion shaft 8; then, the worker controls the direct drive device to work so that the two clamping members 4 clamp the hollow pressure transmission block 2. When the positioning shaft is a positioning cylinder, the controller is only used to control the direct drive device.

[0036] like Figure 1-2As shown, in order to further improve the processing accuracy, as a specific implementation, two clamping members 4 are respectively used to be arranged on both sides of the hollow pressure transmission block 2 along the grinding direction of the grinding disc. In other specific implementations, the two clamping members 4 can also be respectively used to be arranged on both sides of the hollow pressure transmission block 2 along the grinding direction perpendicular to the grinding direction of the grinding disc.

[0037] Compared with the technical solution in which two clamping members 4 are respectively used to be arranged on both sides of the hollow pressure transmission block 2 along the grinding direction perpendicular to the grinding disc, the two clamping members 4 respectively clamp the hollow pressure transmission block 2 on both sides along the grinding direction of the grinding disc, so that the clamping members 4 can better balance the force of the grinding disc on the hollow pressure transmission block 2, better avoid the hollow pressure transmission block 2 from rotating slightly when being ground, and ensure the processing accuracy.

[0038] like Figure 1-2 As shown, in order to conveniently install the clamping member 4 and the direct-acting drive device, as a specific embodiment, the clamping member 4 is provided with a mounting platform 7, the clamping member 4 is movably mounted on the mounting platform 7, and the direct-acting drive device is fixedly mounted on the mounting platform 7, thereby conveniently fixing the clamping member 4 and the direct-acting drive device. However, in other specific embodiments, the direct-acting drive device can also be mounted on the mounting platform 7, and the clamping member 4 is in a suspended state, and the output end of the direct-acting drive device is fixedly connected to the clamping member 4.

[0039] like Figure 1-2 As shown, in order to simplify the structure, as a specific implementation, a slider 5 is provided on the mounting platform 7, and a slide groove is provided on the clamping member 4. The clamping member 4 is slidably mounted on the mounting platform 7 through the slider 5 and the slide groove, and the structure is simple. Specifically, the slider 5 constitutes a guide rail, so that the clamping member 4 can slide under the guidance of the slide rail. Of course, in other specific implementations, a slider can also be provided on the clamping member 4, and a slide groove can be provided on the mounting platform 7. In this case, the slide groove constitutes a guide rail; or a guide rail can be provided on the mounting platform 7, and a roller matching the guide rail can be provided on the clamping member 4, so that the clamping member 4 can roll with the mounting cylinder.

[0040] like Figure 1-2 As shown, in order to further improve the processing accuracy, as a specific implementation method, a support seat is provided under the support table 1, and the height of the support seat and the mounting table 7 satisfies: the center of one end of the clamping member 4 used to clamp the hollow pressure transmission block 2 coincides with the center of the corresponding end face of the hollow pressure transmission block 2, so that the clamping member 4 can better clamp the hollow pressure transmission block 2, avoid the hollow pressure transmission block 2 from rotating during grinding, and improve the processing accuracy.

[0041] Of course, in other specific embodiments, the center of one end of the clamping member 4 used to clamp the hollow pressure transmission block 2 can coincide with the upper portion of the corresponding end surface of the hollow pressure transmission block 2; or, the center of one end of the clamping member 4 used to clamp the hollow pressure transmission block 2 can coincide with the lower portion of the corresponding end surface of the hollow pressure transmission block 2.

[0042] like Figure 1-2 As shown, in order to make the two clamping members 4 conveniently clamp the hollow pressure transmission block 2, as a specific embodiment, the direct drive device is two direct drive cylinders, and the output end of each direct drive cylinder is respectively connected to different clamping members 4 by transmission, and the two clamping members 4, the two direct drive cylinders and the mounting platform 7 together constitute the clamping structure. Specifically, the direct drive cylinder is a cylinder 6. Of course, in other specific embodiments, the direct drive cylinder can also be a hydraulic cylinder or other structure. The output end of each direct drive cylinder is respectively connected to different clamping members 4 by transmission, so that the two clamping members 4 can conveniently clamp the hollow pressure transmission block 2, and the structure is simple.

[0043] Of course, in other specific embodiments, under the premise that both clamping members 4 are guided and moved in coordination with the mounting platform 7, a first connecting rod is hinged on each clamping member 4, and the other ends of the two first connecting rods are hinged with the second connecting rod at the same time, and the output end of the direct-acting drive cylinder is connected to the second connecting rod in a transmission manner, and the position of the second connecting rod is controlled by the direct-acting drive cylinder, thereby controlling the angle between the two first connecting rods. Since the mounting platform 7 guides the clamping member 4, when the angle between the two first connecting rods changes, the distance between the two clamping members 4 changes, so that the two clamping members 4 can be driven to move closer to or farther from each other by a direct-acting drive cylinder. Of course, in other specific embodiments, the direct-acting drive cylinder can also be replaced with a screw elevator, and a moving block is connected to the screw of the screw elevator, and a transmission rod is fixedly connected to the moving block, and the transmission rod is fixedly connected to the clamping member 4. When the screw of the screw elevator rotates, the moving block moves, thereby driving the clamping member 4 to move through the transmission rod, thereby making the two clamping members 4 move closer to or farther from each other.

[0044] Specifically, Figure 1 As shown, as a specific embodiment, the clamping member 4 includes a sliding block for slidingly cooperating with the slide rail on the mounting table 7, a connecting block fixedly connected to the sliding block, and a clamping block fixedly connected to the connecting block, and the output end of the direct-acting drive cylinder is transmission-connected with the connecting block. However, in other specific embodiments, when the clamping member 4 is suspended in the air, the clamping member 4 can also be a clamping rod, the end face of one end of the clamping rod is used to cooperate with the stopper of the hollow pressure transmission block 2, and the other end is used to be fixedly connected to the output end of the direct-acting drive cylinder. In this embodiment, the structure of the clamping member 4 is not limited, as long as the clamping member 4 can be transmission-connected with the direct-acting drive device, and the clamping member 4 can be rotation-stopped with the end face of the hollow pressure transmission block 2.

[0045] Finally, it should be noted that the above are only preferred embodiments of the utility model and are not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A positioning mechanism for a hollow pressure transmission block, comprising a clamping structure for clamping the hollow pressure transmission block, the clamping structure comprising two clamping members for clamping the hollow pressure transmission block and a direct-acting drive device for driving the two clamping members to move closer to or away from each other, characterized in that: The positioning mechanism for the hollow pressure transmission block also includes a support platform for supporting the hollow pressure transmission block, and a positioning shaft for inserting into the through hole of the hollow pressure transmission block to position the hollow pressure transmission block is provided on the support platform.

2. The positioning mechanism for the hollow pressure transmission block according to claim 1, characterized in that: The positioning shaft is an expansion shaft, and the expansion shaft is provided with a power source for controlling the expansion degree of the expansion shaft.

3. The positioning mechanism for the hollow pressure transmission block according to claim 1 or 2, characterized in that: The positioning shaft is arranged in the middle of the two clamping members.

4. The positioning mechanism for the hollow pressure transmission block according to claim 1 or 2, characterized in that: The two clamping parts are respectively used to be arranged on two sides of the hollow pressure transmission block along the grinding direction of the grinding disc.

5. The positioning mechanism for the hollow pressure transmission block according to claim 1 or 2, characterized in that: The positioning mechanism for the hollow pressure transmission block also includes a controller for controlling the direct-acting drive device and a detection device for transmitting a signal to the controller after detecting that the positioning shaft is inserted into the hollow pressure transmission block.

6. The positioning mechanism for the hollow pressure transmission block according to claim 5, characterized in that: The detection device is an infrared sensor arranged on one side of the positioning shaft.

7. The positioning mechanism for the hollow pressure transmission block according to claim 1 or 2, characterized in that: The clamping member is provided with a mounting platform, the clamping member is movably mounted on the mounting platform, and the direct-acting driving device is fixedly mounted on the mounting platform.

8. The positioning mechanism for the hollow pressure transmission block according to claim 7, characterized in that: A support seat is provided below the support platform, and the height of the support seat and the mounting platform satisfies that the center of one end of the clamping piece used to clamp the hollow pressure transmission block coincides with the center of the corresponding end face of the hollow pressure transmission block.

9. The positioning mechanism for the hollow pressure transmitting block according to claim 7, characterized in that: The mounting platform is provided with one of a slide groove and a slider, the clamping member is provided with the other of the slider or the slide groove, and the clamping member is slidably mounted on the mounting platform through the slider and the slide groove.

10. The positioning mechanism for the hollow pressure transmission block according to claim 7, characterized in that: The direct-acting drive device is two direct-acting drive cylinders, and the output end of each direct-acting drive cylinder is respectively connected to different clamping members in a transmission manner. The two clamping members, the two direct-acting drive cylinders and the mounting platform together constitute the clamping structure.

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