A compression mechanism with angle measurement function

Abstract

The present application relates to the technical field of measuring tools, and particularly relates to a pressing mechanism with an angle measuring function, which comprises a pressing assembly, a positioning member mounted on a workbench surface, a horizontal pressing member arranged in the middle section of the positioning member and used for pressing the side surface of a workpiece, and a vertical pressing member arranged on the top of the positioning member and used for pressing the top of the workpiece; an angle measuring assembly is respectively mounted on the clamping end of the horizontal pressing member and the vertical pressing member, and the angle measuring assembly comprises a measuring member, a pressing block arranged on the measuring member and used for abutting against the workpiece, and an indicating needle driven by the pressing block and used for displaying the angle of the workpiece. The pressing block is rotationally connected with the housing through a driving gear, so that when the workpiece needs to be placed at a certain angle, the pressing block can rotate by itself to abut against the outside of the workpiece, thereby not only exerting a stable pressing force on the workpiece, but also driving the indicating needle to rotate, thereby saving time and effort.

Description

Technical Field

[0001] This invention relates to the field of measuring tool technology, and in particular to a clamping mechanism with angle measuring function. Background Technology

[0002] A clamping mechanism is a mechanical device used to tightly connect two or more components together to prevent them from moving or separating relative to each other. There are various types and applications of clamping mechanisms, such as clamping mechanisms and locking mechanisms. The basic principle of a clamping mechanism is to use the force generated by components such as screws, cams, wedges, and springs to apply pressure to the object being clamped through components such as pressure plates, pressure heads, and pressure blocks, so that it forms a firm contact with a fixed base or support, ensuring accuracy and stability during processing, inspection, and other processes.

[0003] Existing clamping mechanisms cannot simultaneously measure the horizontal angle of a workpiece when clamping it. For example, if a workpiece needs to be placed horizontally at a certain angle before being fixed, the horizontal angle of the workpiece is usually measured and corrected by measuring tools after clamping, which is time-consuming, labor-intensive, and has high limitations. Summary of the Invention

[0004] In this section, as well as in the abstract and title of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract, and the title of this application, and such simplifications or omissions shall not be used to limit the scope of the invention.

[0005] The purpose of this invention is to provide a clamping mechanism with angle measurement function.

[0006] Therefore, its purpose is to solve the problem that measuring and correcting the horizontal angle of a workpiece using measuring tools is time-consuming, labor-intensive, and has high limitations.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a clamping mechanism with angle measurement function, comprising a clamping assembly, which includes a positioning member mounted on a worktable, a transverse clamping member disposed in the middle section of the positioning member for clamping the side of the workpiece, and a vertical clamping member disposed on the top of the positioning member for clamping the top of the workpiece; an angle measuring assembly, respectively mounted on the clamping ends of the transverse clamping member and the vertical clamping member, the angle measuring assembly including a measuring member, a clamping block disposed on the measuring member for fitting against the workpiece, and an indicator needle driven by the clamping block to display the angle of the workpiece.

[0008] As a preferred embodiment of the clamping mechanism with angle measurement function of the present invention, the positioning component includes a positioning rod, the bottom of the positioning rod is provided with a first threaded groove, at least two nuts are connected to the first threaded groove, a slide cylinder is fixed to the top of the positioning rod, and a first wing bolt is threadedly connected to the top of the slide cylinder.

[0009] As a preferred embodiment of the clamping mechanism with angle measurement function of the present invention, the transverse clamping member includes a slider slidably disposed in the middle of the positioning rod, a guide rod for guiding the slider to slide is fixed inside the positioning rod, the slider is threadedly connected to a transverse screw in the horizontal direction, and second wing bolts are threadedly connected to both ends of the slider, and a detachable handle is connected to the end of the transverse screw away from the angle measuring component; wherein, the vertical clamping member includes a slide rod slidably connected to the slide cylinder, and a vertical threaded rod is threadedly connected to the slide rod in the vertical direction.

[0010] As a preferred embodiment of the clamping mechanism with angle measurement function of the present invention, the measuring component includes a housing, a driven gear is rotatably connected inside the housing, a rotating shaft is fixed in the middle of the driven gear, and the rotating shaft is coaxially fixed with the indicator needle.

[0011] As a preferred embodiment of the clamping mechanism with angle measurement function of the present invention, wherein: a drive gear is fixedly connected to the end of the clamping block away from the workpiece, the drive gear and the driven gear are connected by a transmission belt, and the drive gear is rotatably connected to the housing.

[0012] As a preferred embodiment of the clamping mechanism with angle measurement function of the present invention, wherein: a measuring ruler fixed on the housing is provided on the outside of the indicator needle, and the surface of the measuring ruler is provided with scale lines.

[0013] As a preferred embodiment of the clamping mechanism with angle measurement function of the present invention, wherein: a limiting component is installed inside the housing to limit the horizontal angle of the workpiece, the limiting component includes a limiting ring rotatably connected to the inner wall of the housing, a limiting telescopic cylinder is fixed to the inner wall of the limiting ring, and a control ring for driving the limiting ring to rotate is rotatably connected to the surface of the housing.

[0014] As a preferred embodiment of the clamping mechanism with angle measurement function of the present invention, wherein: a rotating seat is fixed at one end of the limiting telescopic cylinder, the rotating seat is rotatably disposed on the inner wall of the limiting ring, a fixed ring is rotatably connected to the inner wall of the limiting ring, two sets of driving teeth respectively meshing with the rotating seat are symmetrically arranged on the fixed ring, a magnetic adsorption block is fixed on the outer side of the limiting ring, a limiting telescopic rod adsorbed by the magnetic adsorption block is slidably connected inside the limiting telescopic cylinder, and a limiting rod corresponding to the limiting telescopic cylinder is fixed on the surface of the rotating shaft.

[0015] As a preferred embodiment of the clamping mechanism with angle measurement function of the present invention, wherein: a snap-fit ​​assembly is installed inside the housing for self-locking the rotation of the control ring; the snap-fit ​​assembly includes a snap-fit ​​ring rotatably connected to the inner wall of the housing; the snap-fit ​​ring is fixedly connected to the control ring; a first locking groove is provided on the end face of the snap-fit ​​ring facing the control ring; a second locking groove corresponding to the first locking groove is fixed inside the housing; and the end of the snap-fit ​​ring away from the control ring is connected to a limiting ring through a compression spring.

[0016] As a preferred embodiment of the clamping mechanism with angle measurement function of the present invention, wherein: a magnetic piston is slidably connected inside the limiting telescopic rod, an abutment spring is fixedly connected between the magnetic piston and the limiting telescopic rod, a display window is fixed on the surface of the housing, the display window and the limiting telescopic rod are connected through a pipe, and a magnetic block for driving the magnetic piston is fixed inside the limiting rod.

[0017] The beneficial effects of the clamping mechanism with angle measurement function of the present invention are as follows: the clamping block is rotatably connected to the housing through the drive gear, so when the workpiece needs to be placed at a certain angle, the clamping block itself can rotate to fit against the outside of the workpiece, which not only applies a stable clamping force to the workpiece, but also drives the indicator needle to rotate. Compared with the traditional measurement method, this device can complete the angle measurement while clamping the workpiece, without the need for the operator to measure with an angle measuring tool, saving time and effort. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 This is a three-dimensional structural diagram of the clamping component of the clamping mechanism with angle measurement function in this invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the transverse clamping component of the clamping mechanism with angle measurement function in this invention.

[0021] Figure 3 This is a schematic diagram illustrating the clamping structure of the clamping component of the clamping mechanism with angle measurement function in this invention, demonstrating the clamping of a workpiece.

[0022] Figure 4 This is an exploded structural diagram of the angle measuring component of the clamping mechanism with angle measuring function in this invention.

[0023] Figure 5This is an exploded view of the limiting component of the clamping mechanism with angle measurement function in this invention.

[0024] Figure 6 This is a cross-sectional view of the limiting telescopic cylinder of the clamping mechanism with angle measurement function in this invention.

[0025] Figure 7 This is a schematic diagram of the display window structure of the clamping mechanism with angle measurement function in this invention.

[0026] In the picture:

[0027] 100. Clamping assembly; 101. Positioning component; 102. Lateral clamping component; 103. Vertical clamping component;

[0028] 101a, Positioning rod; 101b, Nut; 101c, Slide cylinder; 101d, First wing bolt;

[0029] 102a, slider; 102b, guide rod; 102c, second wing bolt; 102d, transverse screw; 102e, detachable handle;

[0030] 103a, sliding rod; 103b, vertical threaded rod;

[0031] 200. Angle measuring assembly; 201. Measuring component; 202. Clamping block; 203. Indicator needle;

[0032] 201a, Housing; 201b, Driven Gear; 201c, Shaft;

[0033] 202a, drive gear; 202b, transmission belt;

[0034] 203a. Measuring ruler;

[0035] 300. Limiting assembly; 301. Limiting ring; 302. Limiting telescopic cylinder; 303. Limiting rod; 304. Control ring;

[0036] 302a, Rotating seat; 302b, Drive gear; 302c, Limiting telescopic rod; 302d, Magnetic adsorption block;

[0037] 302c-1, Magnetic piston; 302c-2, Abutment spring; 302c-3, Display window;

[0038] 303a, Magnetic block;

[0039] 400, snap-fit ​​assembly; 401, snap-fit ​​ring; 402, second locking groove; 403, compression spring. Detailed Implementation

[0040] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0042] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0043] Example 1

[0044] Reference Figure 1-2 This is the first embodiment of the present invention, which provides a clamping mechanism with angle measurement function, including a clamping assembly 100. The assembly includes a positioning member 101 mounted on a worktable, a transverse clamping member 102 disposed in the middle section of the positioning member 101 for clamping the side of the workpiece, and a vertical clamping member 103 disposed at the top of the positioning member 101 for clamping the top of the workpiece. The positioning member 101 includes a positioning rod 101a, with a first threaded groove at its bottom. At least two nuts 101b are connected to the first threaded groove. A slide cylinder 101c is fixed to the top of the positioning rod 101a, and a first wing bolt 101d is threadedly connected to the top of the slide cylinder 101c. The vertical clamping member 103 includes a slide rod 103a slidably connected to the slide cylinder 101c, and a vertically threaded rod 103b is threadedly connected to the slide rod 103a in the vertical direction.

[0045] According to the angle of the workpiece placement, the bottom of the positioning rod 101a is inserted into the round hole on the worktable, and then the two nuts 101b are rotated to fix the positioning rod 101a. The slide cylinder 101c guides the sliding of the slide rod 103a, so that the vertical thread rod 103b corresponds with the top of the workpiece and the workpiece is pressed.

[0046] Secondly, the slide cylinder 101c can be pressed and fixed by rotating the first wing bolt 101d, so the stability of the vertical threaded rod 103b is also guaranteed when pressing the workpiece.

[0047] The transverse clamping member 102 includes a slider 102a slidably disposed in the middle of the positioning rod 101a. A guide rod 102b is fixed inside the positioning rod 101a to guide the slider 102a to slide. A transverse screw 102d is threadedly connected to the slider 102a in the horizontal direction. Second wing bolts 102c are threadedly connected to both ends of the slider 102a. A detachable handle 102e is connected to one end of the transverse screw 102d away from the angle measuring component 200.

[0048] refer to Figure 1-2 By loosening the second wing bolt 102c, the height of the slider 102a can be adjusted, thereby adjusting the clamping height on the side of the workpiece. This provides high applicability. Furthermore, under the sliding guidance of the guide rod 102b, the slider 102a moves more smoothly. By rotating the transverse screw 102d, the operator can bring the angle measuring component 200 into contact with the workpiece, thus applying a horizontal clamping force to the workpiece. This force, combined with the vertical clamping force of the vertical clamping component 103, fixes the workpiece, facilitating subsequent welding operations.

[0049] In addition, the detachable handle 102e has plugs threaded at both ends. The detachable handle 102e can be removed by removing the plugs, which facilitates the subsequent disassembly and maintenance of the horizontal screw 102d.

[0050] An angle measuring component 200 is respectively installed on the clamping ends of the horizontal clamping member 102 and the vertical clamping member 103. The angle measuring component 200 includes a measuring element 201, a clamping block 202 disposed on the measuring element 201 for contact with the workpiece, and an indicator needle 203 driven by the clamping block 202 to display the angle of the workpiece. The measuring element 201 includes a housing 201a, a driven gear 201b rotatably connected inside the housing 201a, and a rotating shaft 201c fixed in the middle of the driven gear 201b. The rotating shaft 201c is coaxially fixed with the indicator needle 203. A driving gear 202a is fixedly connected to the end of the clamping block 202 away from the workpiece. The driving gear 202a and the driven gear 201b are connected by a transmission belt 202b, and the driving gear 202a is rotatably connected to the housing 201a. A measuring scale 203a is fixed on the housing 201a on the outside of the indicator needle 203, and the surface of the measuring scale 203a is provided with scale lines.

[0051] refer to Figure 3-4The clamping block 202 is rotatably connected to the housing 201a via the drive gear 202a. Therefore, when the workpiece needs to be placed at a certain angle, the clamping block 202 itself can rotate to fit against the outside of the workpiece, which not only applies a stable clamping force to the workpiece, but also drives the drive gear 202a to rotate. During the rotation of the drive gear 202a, the driven gear 201b is driven to rotate synchronously via the transmission belt 202b. The driven gear 201b drives the indicator needle 203 to rotate via the rotating shaft 201c. By observing the direction indicated by the indicator needle 203 on the measuring ruler 203a, the operator can quickly measure the angle of the current workpiece. Compared with the traditional measurement method, this device can complete the angle measurement while clamping the workpiece, eliminating the need for the operator to use angle measuring tools, saving time and effort.

[0052] In addition, the transmission belt 202b uses an internal toothed transmission belt, which has an accurate transmission ratio and no slippage, thereby improving the accuracy of measurement.

[0053] Example 2

[0054] Reference Figure 3-5 This is the second embodiment of the present invention. Unlike the previous embodiment, it also includes a limiting component 300 installed inside the housing 201a to limit the horizontal angle of the workpiece. The limiting component 300 includes a limiting ring 301 rotatably connected to the inner wall of the housing 201a. A limiting telescopic cylinder 302 is fixed to the inner wall of the limiting ring 301. A control ring 304 that drives the limiting ring 301 to rotate is rotatably connected to the surface of the housing 201a. One end of the limiting telescopic cylinder 302 is fixed with a rotating seat 302a, which is rotatably mounted on the inner wall of the limiting ring 301. The inner wall of the limiting ring 301 is rotatably connected to a fixed ring. The fixed ring is symmetrically provided with two sets of driving teeth 302b that mesh with the rotating seat 302a respectively. A magnetic adsorption block 302d is fixed on the outer side of the limiting ring 301. A limiting telescopic rod 302c that is attracted by the magnetic adsorption block 302d is slidably connected inside the limiting telescopic cylinder 302. A limiting rod 303 corresponding to the limiting telescopic cylinder 302 is fixed on the surface of the rotating shaft 201c.

[0055] When it is necessary to limit the rotation angle of the clamping block 202, the operator can rotate the control ring 304 to the preset measurement angle. The control ring 304 drives the limiting ring 301 to rotate synchronously. When the limiting ring 301 rotates, the rotating seat 302a meshes with the driving tooth 302b, so the rotating seat 302a rotates accordingly. Its rotation angle is preferably 90°. Therefore, the abutment on the limiting telescopic rod 302c can correspond to the limiting rod 303. That is to say, when the limiting rod 303 is driven by the clamping block 202 to rotate in the preset direction, the limiting rod 303 will be blocked by the limiting telescopic rod 302c when it rotates to the preset angle, thereby achieving the purpose of controlling the rotation angle of the clamping block 202. Therefore, by controlling the rotation angle of the clamping block 202, the present invention can realize the adjustment of the workpiece clamping angle, and can perform repeated clamping and welding operations on workpieces with the same angle to improve work efficiency.

[0056] The rotating seat 302a, under the control of two sets of driving teeth 302b, will mesh with the driving teeth 302b when it rotates up or down, thereby adjusting its own angle so that the upper abutment interface of the limiting telescopic rod 302c always abuts against the limiting rod 303, thereby constraining the limiting rod 303.

[0057] Furthermore, in its initial state, the limiting telescopic rod 302c corresponds to the magnetic adsorption block 302d. Therefore, the magnetic force generated by the magnetic adsorption block 302d overcomes the elastic force of the push spring inside the limiting telescopic rod 302c, causing the limiting telescopic rod 302c to retract. Thus, the retracted limiting telescopic rod 302c will not collide with the limiting rod 303, preventing interference with its movement. A magnet with the opposite magnetism to the magnetic adsorption block 302d is fixed inside the limiting telescopic rod 302c.

[0058] The housing 201a is equipped with a snap-fit ​​assembly 400, which is used to self-lock the rotation of the control ring 304. The snap-fit ​​assembly 400 includes a snap-fit ​​ring 401 that is rotatably connected to the inner wall of the housing 201a. The snap-fit ​​ring 401 is fixedly connected to the control ring 304. The end face of the snap-fit ​​ring 401 facing the control ring 304 is provided with a first locking groove. The housing 201a is fixed with a second locking groove 402 corresponding to the first locking groove. The end of the snap-fit ​​ring 401 away from the control ring 304 is connected to the limiting ring 301 through a compression spring 403.

[0059] refer to Figure 4-5When the operator needs to rotate the control ring 304, they must first press the control ring 304 to cause it to separate the locking ring 401 from the second locking groove 402. At this time, the control ring 304 is released from its restriction, and the control ring 304 rotates synchronously through the compression spring 403. When the control ring 304 rotates to the preset angle, the second locking groove 402 pushes the control ring 304 back to its original position under the elastic force of the compression spring 403. The first locking groove on the locking ring 401 and the second locking groove 402 fit together to achieve self-locking, thereby improving the stability of the limit ring 301. When it comes into contact with the limit rod 303, it will not rotate due to external force, further improving the accuracy of the measurement.

[0060] In addition, in order to improve the stability of the connection between the limiting ring 301 and the second locking groove 402, multiple connecting blocks can be provided on the second locking groove 402, and the connecting blocks are slidably connected to the limiting ring 301, thereby further improving the connection strength between the limiting ring 301 and the second locking groove 402.

[0061] Example 3

[0062] Reference Figure 5-7 This is the third embodiment of the present invention, which further provides a clamping mechanism with an angle measurement function. It includes a magnetic piston 302c-1 slidably connected inside a limiting telescopic rod 302c, a retaining spring 302c-2 fixedly connected between the magnetic piston 302c-1 and the limiting telescopic rod 302c, a display window 302c-3 fixedly fixed on the surface of the housing 201a, the display window 302c-3 being filled with liquid, and the display window 302c-3 and the limiting telescopic rod 302c being connected via a pipe. A magnetic block 303a, which drives the magnetic piston 302c-1, is fixedly fixed inside the limiting rod 303.

[0063] As can be seen from Example 2, when the limiting rod 303 is in contact with the limiting telescopic rod 302c, the magnetic force generated by the magnetic block 303a inside the limiting rod 303 will overcome the elastic force of the abutting spring 302c-2, so the magnetic piston 302c-1 slides. At the same time as the magnetic piston 302c-1 slides, it will draw liquid from the display window 302c-3 through the pipe. Therefore, by observing whether the liquid in the display window 302c-3 changes, the operator can quickly understand whether the pressing block 202 has rotated to the preset angle.

[0064] Secondly, by using the elastic force applied to the magnetic piston 302c-1 by the abutting spring 302c-2, the magnetic piston 302c-1 can automatically return to its original position, thereby transporting the liquid inside the limiting telescopic rod 302c to the display window 302c-3 to prevent accidental triggering.

[0065] In addition, the magnetic piston 302c-1 contains magnetic positions, such as magnetic sheets, and the magnetic force of the magnetic sheets is opposite to that of the magnetic block 303a, thus generating a magnetic force that attracts the magnetic piston 302c-1.

[0066] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0067] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0068] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A clamping mechanism with angle measurement function, characterized in that: include, The clamping assembly (100) includes a positioning member (101) mounted on the worktable surface, a transverse clamping member (102) disposed in the middle section of the positioning member (101) for clamping the side of the workpiece, and a vertical clamping member (103) disposed at the top of the positioning member (101) for clamping the top of the workpiece. An angle measuring component (200) is respectively installed on the clamping ends of the horizontal clamping member (102) and the vertical clamping member (103). The angle measuring component (200) includes a measuring member (201), a clamping block (202) disposed on the measuring member (201) for fitting with the workpiece, and an indicator needle (203) driven by the clamping block (202) to display the angle of the workpiece. The positioning component (101) includes a positioning rod (101a), the bottom of the positioning rod (101a) is provided with a first threaded groove, at least two nuts (101b) are connected to the first threaded groove, and a slide cylinder (101c) is fixed to the top of the positioning rod (101a), and a first wing bolt (101d) is threaded to the top of the slide cylinder (101c). The transverse clamping member (102) includes a slider (102a) slidably disposed in the middle of the positioning rod (101a), a guide rod (102b) for guiding the slider (102a) to slide is fixed inside the positioning rod (101a), a transverse screw (102d) is threadedly connected to the slider (102a) in the horizontal direction, and second wing bolts (102c) are threadedly connected to both ends of the slider (102a), and a detachable handle (102e) is connected to the end of the transverse screw (102d) away from the angle measuring component (200). The vertical clamping member (103) includes a slide rod (103a) that is slidably connected to the slide cylinder (101c), and the slide rod (103a) is threaded with a vertical threaded rod (103b) in the vertical direction. The measuring component (201) includes a housing (201a), a driven gear (201b) is rotatably connected inside the housing (201a), a rotating shaft (201c) is fixed in the middle of the driven gear (201b), and the rotating shaft (201c) is coaxially fixed with the indicator needle (203); The clamping block (202) is fixedly connected to a drive gear (202a) at the end away from the workpiece. The drive gear (202a) and the driven gear (201b) are connected by a transmission belt (202b). The drive gear (202a) is rotatably connected to the housing (201a). The indicator needle (203) is provided with a measuring ruler (203a) fixed on the housing (201a) on the outside, and the surface of the measuring ruler (203a) is provided with scale lines; A limiting component (300) is installed inside the housing (201a) to limit the horizontal angle of the workpiece. The limiting component (300) includes a limiting ring (301) rotatably connected to the inner wall of the housing (201a). A limiting telescopic cylinder (302) is fixed to the inner wall of the limiting ring (301). A control ring (304) that drives the limiting ring (301) to rotate is rotatably connected to the surface of the housing (201a).

2. The clamping mechanism with angle measurement function as described in claim 1, characterized in that: One end of the limiting telescopic cylinder (302) is fixed with a rotating seat (302a). The rotating seat (302a) is rotatably mounted on the inner wall of the limiting ring (301). The inner wall of the limiting ring (301) is rotatably connected to a fixed ring. The fixed ring is symmetrically provided with two sets of driving teeth (302b) that mesh with the rotating seat (302a). A magnetic adsorption block (302d) is fixed on the outside of the limiting ring (301). A limiting telescopic rod (302c) that is adsorbed by the magnetic adsorption block (302d) is slidably connected inside the limiting telescopic cylinder (302). A limiting rod (303) corresponding to the limiting telescopic cylinder (302) is fixed on the surface of the rotating shaft (201c).

3. The clamping mechanism with angle measurement function as described in claim 2, characterized in that: The housing (201a) is equipped with a snap-fit ​​assembly (400) for self-locking the rotation of the control ring (304). The snap-fit ​​assembly (400) includes a snap-fit ​​ring (401) rotatably connected to the inner wall of the housing (201a). The snap-fit ​​ring (401) is fixedly connected to the control ring (304). The snap-fit ​​ring (401) has a first locking groove on its end face facing the control ring (304). The housing (201a) is equipped with a second locking groove (402) corresponding to the first locking groove. The end of the snap-fit ​​ring (401) away from the control ring (304) is connected to the limiting ring (301) through a compression spring (403).

4. The clamping mechanism with angle measurement function as described in claim 2, characterized in that: A magnetic piston (302c-1) is slidably connected inside the limiting telescopic rod (302c). A retaining spring (302c-2) is fixedly connected between the magnetic piston (302c-1) and the limiting telescopic rod (302c). A display window (302c-3) is fixed on the surface of the housing (201a). The display window (302c-3) is filled with liquid. The display window (302c-3) and the limiting telescopic rod (302c) are connected by a pipe. A magnetic block (303a) that drives the magnetic piston (302c-1) is fixed inside the limiting rod (303).

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