Fixture for quickly positioning precision part

Abstract

The utility model relates to the technical field of positioning fixtures, and discloses a fixture for quick positioning of precision parts, which comprises a base and an aspirator pump, a plurality of chutes are arranged on the front side and the rear side of the top of the base, and the inner walls of the chutes are slidably connected with air suction pipes. The outer walls of the multiple air suction pipes on the front side and the rear side are fixedly connected with the same connecting block, the two connecting blocks are in sliding connection with the base, the front side and the rear side of the inner wall of the base are rotationally connected with lead screws, and the two lead screws are in threaded connection with the corresponding connecting blocks correspondingly. According to the utility model, the screw rod is in threaded fit with the connecting block, so that the connecting block drives the air suction pipe to slide along the sliding chute, the position of the air suction pipe can be adjusted to adapt to different parts, and the air suction pump, the flow equalizer, the hose and the air suction pipe work cooperatively; the problem that precision is reduced due to repeated friction between a traditional positioning pin and a positioning hole is solved.

Description

A fixture for rapid positioning of precision parts Technical Field

[0001] This utility model relates to the field of positioning fixture technology, and in particular to a fixture for rapid positioning of precision parts. Background Technology

[0002] In modern manufacturing, the requirements for the processing of precision parts are increasing. A fixture for the rapid positioning of precision parts is a key tooling to ensure that precision parts are accurately fixed in position during the processing. It enables precision parts to be quickly and accurately positioned on the processing equipment, thereby ensuring processing accuracy and production efficiency. It plays a vital role in improving product quality and shortening the production cycle.

[0003] Existing fixtures for positioning precision parts generally consist of a fixed base with positioning holes. Positioning pins are installed on the part to be positioned, and initial positioning of the part is achieved by inserting the positioning pins into the positioning holes of the fixed base. A clamping structure consisting of bolts and nuts then securely fixes the part to the fixture. In use, the positioning pins on the part are first aligned with the positioning holes of the fixed base and inserted. Then, the clamping device is operated to ensure the part fits tightly against the fixture for subsequent processing. However, in actual use, due to repeated sliding friction between the positioning pins and the positioning holes during multiple clamping and processing operations, the gap between the positioning pins and the positioning holes gradually widens, leading to a decrease in positioning accuracy. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides a fixture for rapid positioning of precision parts, aiming to improve the problem in the prior art where the gap between the positioning pin and the positioning hole gradually widens after long-term use, resulting in a decrease in positioning accuracy.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fixture for rapid positioning of precision parts, comprising a base and an air pump. Multiple sliding grooves are provided on the front and rear sides of the top of the base. Air suction pipes are slidably connected to the inner walls of the multiple sliding grooves. The outer walls of the multiple air suction pipes on the front and rear sides are fixedly connected to the same connecting block. Two connecting blocks are slidably connected to the base. Lead screws are rotatably connected to the front and rear sides of the inner walls of the base. Two lead screws are threadedly connected to the corresponding connecting blocks. Flexible hoses are connected to the opposite sides of the multiple air suction pipes. The other ends of the multiple flexible hoses are connected to the same flow equalizer. Multiple control valves are fixedly connected to the tops of the two flow equalizers. The multiple control valves are respectively connected to the corresponding flexible hoses. A main pipe is connected to the left end of the two flow equalizers. A sleeve is connected to the right end of the outer wall of the air pump. A quick-connect mechanism is provided at the right end of the sleeve for quickly connecting the main pipe and the sleeve. Sliding grooves are provided on the front and rear sides of the top of the base, and clamping components are provided on the inner walls of the two sliding grooves.

[0006] As a further description of the above technical solution:

[0007] The quick-connect mechanism includes two connecting tubes. The left ends of the two connecting tubes are fixedly connected to the right end of the sleeve, and multiple extrusion plates are fixedly connected to the right sides of the two connecting tubes. The outer walls of the multiple extrusion plates are threaded with tightening rings, and the inner walls of the multiple extrusion plates are fixedly connected with sealing rings.

[0008] As a further description of the above technical solution:

[0009] The clamping assembly includes two clamping plates, the bottom left sides of which are slidably connected to the inner walls of corresponding sliding grooves. A bidirectional screw is rotatably connected to the inner walls of the two sliding grooves. Both clamping plates are threadedly connected to the bidirectional screws. A reserved groove is provided on the left and right sides of the top center of the base. A clamping plate is slidably connected to the inner walls of both reserved grooves. A bidirectional screw is rotatably connected to the inner walls of both reserved grooves. The bidirectional screws are threadedly connected to the two clamping plates.

[0010] As a further description of the above technical solution:

[0011] The base is fixedly connected to the left and right sides of its bottom, and the outer walls of the two fixed plates are threaded with fixing bolts.

[0012] As a further description of the above technical solution:

[0013] Multiple grooves are provided on the front and rear sides of the top of the two fixing plates, and gaskets are fixedly connected to the inner walls of the multiple grooves. The multiple fixing bolts pass through the corresponding gaskets respectively.

[0014] As a further description of the above technical solution:

[0015] The base has multiple scale grooves on its top right side, and the spacing between adjacent scale grooves is equal.

[0016] As a further description of the above technical solution:

[0017] A grip is fixedly connected to the rear end of the first bidirectional screw, and a cross handle is fixedly connected to the left end of the second bidirectional screw. The outer walls of both the grip and the cross handle are treated with anti-slip material.

[0018] As a further description of the above technical solution:

[0019] Multiple anti-slip strips are fixedly connected to the outer walls of the two tightening rings, and the spacing between the multiple anti-slip strips is equal.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the screw and the connecting block are threaded together, so that the connecting block drives the suction pipe to slide along the slide groove. The position of the suction pipe can be adjusted to adapt to different parts. The suction pump, the flow equalizer, the hose and the suction pipe work together to achieve the initial positioning of the parts by suction adsorption, which avoids the problem of the gap becoming larger and the accuracy decreasing due to repeated friction between the traditional positioning pin and the positioning hole.

[0022] 2. In this utility model, when connecting, first insert the main pipe into the connecting pipe, rotate the tightening ring, and because of the threaded connection with the extrusion plate, move it to the left to cause the extrusion plate to shrink towards the center and extrude the sleeve. At the same time, the sealing ring on the inner wall tightly fits the outer wall of the sleeve. This not only makes the operation simple, but also ensures the sealing of the connection part, ensuring that the air pump does not leak when it is working, thereby ensuring the stable operation of the clamp's air suction positioning function. Attached Figure Description

[0023] Figure 1 is a perspective view of a fixture for rapid positioning of precision parts proposed in this utility model;

[0024] Figure 2 is a front view of a fixture for rapid positioning of precision parts proposed in this utility model;

[0025] Figure 3 is a partial structural schematic diagram of a fixture for rapid positioning of precision parts proposed in this utility model;

[0026] Figure 4 is a partial structural exploded view of a fixture for rapid positioning of precision parts proposed in this utility model;

[0027] Figure 5 is a schematic diagram of the pad of a fixture for rapid positioning of precision parts proposed in this utility model;

[0028] Figure 6 is a schematic diagram of a quick-connect mechanism for a fixture used for rapid positioning of precision parts proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Quick-connect mechanism; 201. Connecting pipe; 202. Extrusion plate; 203. Tightening ring; 204. Sealing ring; 3. Slide groove; 4. Suction pipe; 5. Connecting block; 6. Screw; 7. Hose; 8. Flow equalizer; 9. Control valve; 10. Main pipe; 11. Suction pump; 12. Sleeve; 13. Sliding groove; 14. Clamping plate one; 15. Double-acting screw one; 16. Reserved groove; 17. Clamping plate two; 18. Double-acting screw two; 19. Fixing plate; 20. Fixing bolt; 21. Groove; 22. Gasket; 23. Scale groove; 24. Grip handle; 25. Cross handle; 26. Anti-slip strip. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Referring to Figures 1, 2, and 4, this utility model provides an embodiment: a fixture for rapid positioning of precision parts, comprising a base 1 and an air pump 11. The base 1 serves as the basic support structure for the entire fixture, providing an installation platform for other components. Multiple sliding grooves 3 are provided on the front and rear sides of the top of the base 1, providing sliding tracks for the air suction pipes 4, allowing them to move flexibly within a certain range. The inner walls of the multiple sliding grooves 3 are slidably connected to the air suction pipes 4. The suction force generated by the air suction initially positions the precision parts on the fixture, ensuring the accuracy of the parts' position during processing. Each suction tube 4 has a fixed connecting block 5 on its outer wall, connecting multiple suction tubes 4 into a whole for easy synchronous movement and position adjustment. Both connecting blocks 5 are slidably connected to the base 1. Lead screws 6 are rotatably connected to the front and rear sides of the inner wall of the base 1. By rotating the lead screws 6, the connecting blocks 5 can be driven to move along the slide groove 3, thereby precisely adjusting the position of the suction tubes 4. The two lead screws 6 are threadedly connected to their corresponding connecting blocks 5, converting the rotation of the lead screws 6 into the linear motion of the connecting blocks 5, achieving precise control of the position of the suction tubes 4. The opposite sides of the multiple suction tubes 4 are all connected to flexible... Pipe 7 is used to transmit the suction force generated by the suction pump 11. The other ends of multiple hoses 7 are connected to the same flow equalizer 8, which connects to the other ends of multiple hoses 7 to evenly distribute the suction force and ensure uniform adsorption force of each suction tube 4. Multiple control valves 9 are fixedly connected to the top of each flow equalizer 8 to individually control the on / off state and suction force of each hose 7, meeting the adsorption requirements of precision parts of different shapes and materials. The multiple control valves 9 are connected to the corresponding hoses 7 to realize independent adjustment of the adsorption force of each suction tube 4. The left end of each of the two flow equalizers 8 is connected to the main pipe 10, which... The suction force generated by the suction pump 11 is collected and transmitted to the flow equalizer 8 to provide a stable suction source for each suction tube 4. The right end of the outer wall of the suction pump 11 is connected to the sleeve 12, which serves as a transition component for connecting the suction pump 11 and the main tube 10, facilitating quick connection. The right end of the sleeve 12 is provided with a quick-connect mechanism 2, which is used to quickly connect the main tube 10 and the sleeve 12. The top front and rear sides of the base 1 are provided with sliding grooves 13 to provide sliding tracks for the clamping plate 14 in the clamping assembly, allowing it to move within a certain range. The inner walls of the two sliding grooves 13 are provided with clamping assemblies.For clamping precision parts, the clamping assembly includes two clamping plates 14. The bottom left side of the two clamping plates 14 is slidably connected to the inner wall of the corresponding sliding groove 13. The inner wall of the two sliding grooves 13 is rotatably connected to a bidirectional screw 15. Both clamping plates 14 are threadedly connected to the bidirectional screw 15. By cooperating with the bidirectional screw 15, the precision parts are clamped in the front-back direction. The top center of the base 1 has reserved grooves 16 on both the left and right sides to provide sliding space for the clamping plate 17, allowing it to move within a certain range. The inner wall of the two reserved grooves 16 is slidably connected to the clamping plate 17. By cooperating with the bidirectional screw 18, the precision parts are clamped in the left-right direction. The inner wall of the two reserved grooves 16 is rotatably connected to the bidirectional screw 18. The bidirectional screw 18 is threadedly connected to the two clamping plates 17.

[0033] Specifically, the base 1 serves as the basic support, and its top groove 3 provides a sliding track for the suction pipe 4, allowing the suction pipe 4 to move flexibly to adapt to the adsorption position requirements of different precision parts. The connecting block 5 connects multiple suction pipes 4 on the front and rear sides and slides to the base 1. Driven by the lead screw 6, the position of the suction pipe 4 is adjusted along the groove 3. The lead screw 6 is threadedly connected to the connecting block 5, and rotating the lead screw 6 can precisely control the position of the suction pipe 4. The suction pipe 4 is connected to the flow equalizer 8 through the hose 7. The flow equalizer 8 ensures that the airflow is evenly distributed to each suction pipe 4. The control valve 9 is connected to the top of the flow equalizer 8 and the hose 7, which can individually control the airflow of each hose 7 to meet the adsorption requirements of different parts. The flow device 8 is connected to the sleeve 12 of the suction pump 11 through the main pipe 10. The quick-connect mechanism 2 enables the quick connection between the main pipe 10 and the sleeve 12, which facilitates the suction pump 11 to provide suction to the suction pipe 4 to adsorb precision parts. The sliding groove 13 and the reserved groove 16 on the top of the base 1 are respectively used to install clamping components. When the bidirectional screw 15 rotates, the two clamping plates 14 connected to it by threads slide relative to each other or back to back in the sliding groove 13 to clamp the parts in the front and back directions. When the bidirectional screw 18 rotates, it drives the two clamping plates 17 sliding in the reserved groove 16 to clamp the parts in the left and right directions, thereby adapting to and firmly clamping precision parts of different sizes, and working with the suction pipe 4 to achieve rapid positioning of precision parts.

[0034] Referring to Figures 1, 2, and 6, the quick-connect mechanism 2 includes two connecting pipes 201 for connecting to the sleeve 12 and providing an installation base for subsequent components, serving as a connection and positioning mechanism. The left ends of the two connecting pipes 201 are fixedly connected to the right ends of the sleeve 12, ensuring that the suction force generated by the suction pump 11 can be smoothly transmitted to the subsequent pipeline, guaranteeing the stability of the air path. Multiple compression plates 202 are fixedly connected to the right sides of the two connecting pipes 201, which can be retracted towards the center under the action of the tightening ring 203, achieving [the desired effect]. For the compression and fastening of the connecting components, the outer walls of multiple extrusion plates 202 are threaded with tightening rings 203, which are threaded to the extrusion plates 202. By rotating the tightening rings 203, the degree of retraction of the extrusion plates 202 can be controlled, thereby adjusting the clamping force on the connecting components. The inner walls of multiple extrusion plates 202 are fixedly connected with sealing rings 204, which are fixed to the inner walls of the extrusion plates 202. When the extrusion plates 202 compress the connecting components, the sealing rings 204 can tightly fit the surface of the connecting components, play a sealing role, and prevent gas leakage.

[0035] Specifically, the left ends of the two connecting pipes 201 are fixedly connected to the right end of the sleeve 12, serving as a connector and forming the basic component for the connection between the main pipe 10 and the sleeve 12. Multiple extrusion plates 202 fixed around the right side of the connecting pipes 201 are key components for achieving a tight connection and seal. A tightening ring 203 threaded to the outer wall of the extrusion plate 202 generates displacement through rotation. When the tightening ring 203 is rotated, due to the transmission of the threads, the tightening ring 203 moves along the outer wall of the extrusion plate 202, gradually advancing to the left. As the tightening ring 203 moves, it applies pressure to the extrusion plate 202. Applying an inward force causes the multiple extrusion plates 202 to gradually converge toward the center. The sealing ring 204 fixed to the inner wall of the extrusion plate 202 will tightly fit the outer wall of the main pipe 10 when the extrusion plate 202 converges toward the center and squeezes the main pipe 10 inserted into the connecting pipe 201. The sealing ring 204 has good elasticity and sealing performance. It works with the extrusion plate 202 to enhance the sealing performance of the connection part and prevent air leakage when the suction pump 11 is working. On the other hand, it ensures the stability of the connection between the main pipe 10 and the sleeve 12 and ensures the stable operation of the suction positioning function of the clamp.

[0036] Referring to Figures 1, 4, and 5, fixing plates 19 are fixedly connected to the bottom left and right sides of the base 1 to assist in fixing the base 1. Fixing bolts 20 are threadedly connected to the front and rear sides of the outer walls of the two fixing plates 19. Through the threaded connection, the base 1 can be stably installed on the workbench surface. Multiple grooves 21 are opened on the front and rear sides of the top of the two fixing plates 19. The gaskets 22 in the grooves 21 increase the contact area with the fixing bolts 20 and distribute the pressure. Gaskets 22 are fixedly connected to the inner walls of the multiple grooves 21, and the multiple fixing bolts 20 pass through the corresponding gaskets 22.

[0037] Specifically, the fixing plates 19 on the left and right sides of the bottom of the base 1 are used to assist in fixing the base 1. The fixing bolts 20 on the front and rear sides of the outer wall of the fixing plate 19 are connected by threads to securely install the base 1 on the workbench surface. The gaskets 22 in the grooves 21 on the front and rear sides of the top of the fixing plate 19 increase the contact area with the fixing bolts 20 and distribute the pressure. On the other hand, they also play a buffering role. The fixing bolts 20 pass through the gaskets 22, making the fixture installation more secure, reducing the impact of vibration, and ensuring the stability of the fixture during operation.

[0038] Referring to Figures 1, 2, and 3, the top right side of the base 1 has multiple graduated grooves 23, with equal spacing between adjacent grooves 23, providing a quantitative reference for adjusting the position of components such as the suction tube 4, facilitating precise positioning; the rear end of the bidirectional screw 15 is fixedly connected to a handle 24, and the left end of the bidirectional screw 28 is fixedly connected to a cross handle 25, making it easy for the operator to grip and apply force to rotate the screws to adjust the clamping plate; the outer walls of both the handle 24 and the cross handle 25 are treated with anti-slip material; multiple anti-slip strips 26 are fixedly connected around the outer walls of the two tightening rings 203, with equal spacing between the anti-slip strips 26;

[0039] Specifically, the scale groove 23 on the top right side of the base 1 provides a quantitative reference for adjusting the position of components such as the suction tube 4, facilitating precise positioning. The grip 24 at the rear end of the bidirectional screw 15 and the cross handle 25 at the left end of the bidirectional screw 28 make it easy for the operator to grip and apply force to rotate the screws, thereby adjusting the clamping plate 2 17. Its outer wall is treated with anti-slip material to increase friction and make operation more stable. Similarly, the anti-slip strip 26 on the outer wall of the tightening ring 203 facilitates the rotation of the tightening ring 203, thereby achieving a sealed connection of the quick-connect mechanism 2.

[0040] Working principle: When positioning precision parts, the lead screw 6 is rotated according to the shape and size of the part. The lead screw 6 is threadedly connected to the connecting block 5, causing the connecting block 5 to move along the slide groove 3 on the top of the base 1. This, in turn, drives the suction pipe 4 connected to it to slide within the slide groove 3, thereby adjusting the position of the suction pipe 4 so that it can be aligned with precision parts in different positions, meeting the adsorption requirements of parts with different shapes and positions. Next, the suction pump 11 is turned on. The suction pump 11 is quickly connected to the main pipe 10 through the sleeve 12, drawing in gas. The gas passes through the flow equalizer 8, which evenly distributes the airflow to each hose 7, thereby generating suction through the suction pipe 4. Under the action of suction, the precision part is tightly pressed against the suction pipe 4, achieving initial positioning. This positioning method relying on suction avoids the repeated sliding friction caused by the traditional positioning pin and positioning hole mating method. This leads to problems such as increased gaps and decreased precision. Subsequently, depending on the size of the part, the clamping assembly is operated. For parts with different dimensions along the front-back direction of the base 1, the bidirectional screw 15 is rotated. Since the two clamping plates 14 are threadedly connected to the bidirectional screw 15 and their bottom left side slides in the sliding groove 13, the rotation of the bidirectional screw 15 will drive the two clamping plates 14 to move relative to or away from each other, thereby clamping the part in the front-back direction. For parts with different dimensions along the left-right direction of the base 1, the bidirectional screw 18 is rotated. The bidirectional screw 18 is threadedly connected to the two clamping plates 17 and the clamping plates 17 slide in the reserved groove 16, thereby achieving clamping of the part in the left-right direction. In this way, the fixture can adapt to and firmly clamp precision parts of different sizes, further ensuring the stability and positioning accuracy of the parts during the processing.

[0041] Furthermore, when connecting the main pipe 10 and the sleeve 12, the end of the main pipe 10 is first inserted into the connecting pipe 201. The connecting pipe 201 serves as the basic component for connection, providing positioning and support for subsequent operations. Then, the tightening ring 203 is rotated. Since the tightening ring 203 and the extrusion plate 202 are connected by threads, as the tightening ring 203 rotates along the outer wall of the extrusion plate 202, according to the transmission principle of the thread, the tightening ring 203 will gradually move to the left. During the process of the tightening ring 203 moving to the left, multiple extrusion plates 202 are subjected to the tightening ring 203. As the compression plate 202 gradually converges towards the center, this centripetal movement of the compression plate 202 will exert a compression effect on the sleeve 12 inserted into the connecting tube 201. A sealing ring 204 is fixedly connected to the inner wall of the compression plate 202. When the compression plate 202 compresses the sleeve 12, the sealing ring 204 will also move with the compression plate 202 and tightly fit against the outer wall of the sleeve 12. In this way, the sealing of the connection part is effectively guaranteed, preventing air leakage during the operation of the suction pump 11 and ensuring that the suction positioning function of the entire fixture can operate stably.

[0042] Finally, it should be noted that the above description is only 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. A fixture for rapid positioning of precision parts comprising a base (1) and a suction pump (11), characterized in that: The base (1) has multiple sliding grooves (3) on its top front and rear sides. Each sliding groove (3) has a suction pipe (4) slidably connected to its inner wall. The outer walls of each suction pipe (4) on the front and rear sides are fixedly connected to the same connecting block (5). Both connecting blocks (5) are slidably connected to the base (1). Each inner wall of the base (1) has a lead screw (6) rotatably connected to its front and rear sides. Both lead screws (6) are threadedly connected to their respective connecting blocks (5). Each suction pipe (4) has a flexible hose (7) connected to its opposite side. The other end of each flexible hose (7) is connected to the same... The top of each of the two flow equalizers (8) is fixedly connected to a plurality of control valves (9), and the plurality of control valves (9) are respectively connected to the corresponding hoses (7). The left end of each of the two flow equalizers (8) is connected to a main pipe (10). The right end of the outer wall of the suction pump (11) is connected to a sleeve (12). The right end of the sleeve (12) is provided with a quick-connect mechanism (2). The quick-connect mechanism (2) is used to quickly connect the main pipe (10) and the sleeve (12). The top front and rear sides of the base (1) are provided with sliding grooves (13), and the inner walls of the two sliding grooves (13) are provided with clamping components.

2. The fixture for rapid positioning of precision parts according to claim 1, characterized in that: The quick-connect mechanism (2) includes two connecting tubes (201). The left ends of the two connecting tubes (201) are fixedly connected to the right ends of the sleeve (12). Multiple extrusion plates (202) are fixedly connected to the right sides of the two connecting tubes (201). The outer walls of the multiple extrusion plates (202) are threaded with tightening rings (203), and the inner walls of the multiple extrusion plates (202) are fixedly connected with sealing rings (204).

3. A fixture for rapid positioning of precision parts according to claim 1, characterized in that: The clamping assembly includes two clamping plates (14). The bottom left sides of the two clamping plates (14) are slidably connected to the inner walls of the corresponding sliding grooves (13). The inner walls of the two sliding grooves (13) are rotatably connected to a bidirectional screw (15). The two clamping plates (14) are threadedly connected to the bidirectional screw (15). The top center of the base (1) is provided with reserved grooves (16) on both the left and right sides. The inner walls of the two reserved grooves (16) are slidably connected to clamping plates (17). The inner walls of the two reserved grooves (16) are rotatably connected to bidirectional screws (18). The bidirectional screws (18) are threadedly connected to the two clamping plates (17).

4. A fixture for rapid positioning of precision parts according to claim 1, characterized in that: The base (1) is fixedly connected to the left and right sides of the bottom with fixing plates (19), and the outer walls of the two fixing plates (19) are threaded with fixing bolts (20).

5. A fixture for rapid positioning of precision parts according to claim 4, characterized in that: Multiple grooves (21) are provided on the front and rear sides of the top of the two fixing plates (19). Gaskets (22) are fixedly connected to the inner walls of the multiple grooves (21). Multiple fixing bolts (20) pass through the corresponding gaskets (22).

6. A fixture for rapid positioning of precision parts according to claim 1, characterized in that: The base (1) has multiple scale grooves (23) on the top right side, and the spacing between adjacent scale grooves (23) is equal.

7. A fixture for rapid positioning of precision parts according to claim 3, characterized in that: The rear end of the first bidirectional screw (15) is fixedly connected to a grip (24), and the left end of the second bidirectional screw (18) is fixedly connected to a cross handle (25). The outer walls of both the grip (24) and the cross handle (25) are treated with anti-slip material.

8. The fixture for rapid positioning of precision parts of claim 2, wherein: Multiple anti-slip strips (26) are fixedly connected around the outer walls of the two tightening rings (203), and the spacing between the multiple anti-slip strips (26) is equal.

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