A high-precision mechanical part positioning and clamping device

Abstract

The utility model relates to mechanical part technical field, concretely is a kind of high-precision mechanical part positioning clamping device, it includes: clamping mechanism, the bottom side one end of clamping mechanism is provided with driving mechanism, clamping mechanism includes rectangular frame, the inner surface of rectangular frame is provided with inner plate, the inner surface of rectangular frame is connected with the outside of inner plate and is slidably connected, this high-precision mechanical part positioning clamping device, the motor connected with screw rod is started, so that the two rectangular frames on screw rod move to the same direction, the part between two can be clamped and fixed, setting has the lever on the side of rectangular frame, the ninety degrees rotation of cross bar is carried out, so that lever starts to cause external force to U plate, inner plate will slide in rectangular frame, and sector plate slides out from rectangular frame, when it is contacted with irregular part surface, it can automatically adjust angle according to the outline of part, realizes multiple point contact and adhesion, can switch clamping mode according to the shape of part.

Description

Technical Field

[0001] This utility model relates to the field of mechanical parts technology, specifically a high-precision mechanical parts positioning and clamping device. Background Technology

[0002] Mechanical parts are components with specific shapes, sizes, and functions, made from a single material or multiple materials through specific processes. They cooperate and work together to enable the machine to achieve the expected movement and function.

[0003] In existing technologies, mechanical parts come in various forms and are used in different scenarios. After production, they require clamping and polishing. Due to limitations in the processing technology, their surfaces may have burrs, uneven roughness, dimensional deviations, and other problems. These problems not only affect the appearance quality of the parts but may also reduce their performance and service life.

[0004] However, during the machining and polishing process, clamping is the first step. When dealing with irregular parts, whose unique shapes make it difficult to accurately position them using conventional general-purpose fixtures without switching, this can be challenging. For example, mold inserts with complex shapes have irregular contours, and general-purpose fixtures cannot fit the key positioning surfaces, causing positional shifts during polishing. This makes it difficult to meet the dimensional accuracy and form and position tolerances of the inserts, affecting the overall assembly and forming quality of the mold. To address this, we propose a high-precision mechanical part positioning and clamping device. Utility Model Content

[0005] One of the technical problems to be solved by this application is: by designing a switchable fixture, parts can be clamped and positioned at any time.

[0006] To address the aforementioned technical problems, this application provides a high-precision mechanical part positioning and clamping device, comprising: a clamping mechanism, an auxiliary mechanism on the bottom side of the clamping mechanism, a driving mechanism at one end of the bottom side of the clamping mechanism, the clamping mechanism including a rectangular frame, an inner plate on the inner surface of the rectangular frame, the inner surface of the rectangular frame being slidably connected to the outer side of the inner plate, a fan-shaped plate on one end of the inner wall of the inner plate, the inner wall of the inner plate being rotatably connected to one end of the fan-shaped plate, a connecting rod on one side of the inner plate, the connecting rod being fixedly connected to one end of the connecting rod, and a U-plate on the other end of the connecting rod, the connecting rod being fixedly connected to one end of the U-plate.

[0007] In some embodiments, the auxiliary mechanism includes a support rod, a roller is provided at the bottom end of the support rod, the bottom end of the support rod is rotatably connected to the inner side of the roller, a base plate is provided at the outer side of the roller, and the outer side of the roller is slidably connected to the top side of the base plate.

[0008] In some embodiments, the driving mechanism includes a motor, the output end of which is provided with a lead screw, the output end of which is fixedly connected to one end of the lead screw, the other end of which is rotatably connected to the inner wall of the base plate, one end of the base plate is fixedly connected to one end of the motor, and the outer side of the lead screw is threadedly connected to the inner wall of one bottom end of the rectangular frame.

[0009] In some embodiments, the bottom side of the rectangular frame is slidably connected to the top side of the base plate, a semicircular block is provided on the top side of the rectangular frame, the top side of the rectangular frame is rotatably connected to the bottom end of the semicircular block, a rotating rod is provided on the top end of the semicircular block, and the top end of the semicircular block is fixedly connected to the bottom end of the rotating rod.

[0010] In some embodiments, the inner wall of the rotating rod is provided with a handle, the inner wall of the rotating rod and the inner wall of the handle are slidably connected through vertically, and the bottom side of the handle is provided with an insertion rod, the bottom side of the handle and the top end of the insertion rod are fixedly connected.

[0011] In some embodiments, a locking groove is provided on the top side of the rectangular frame, and the inner surface of the locking groove is perpendicularly engaged with the outer side of the bottom end of the insertion rod. A lever is provided at one end of the side of the rectangular frame, and the outer side of the lever is rotatably connected to the side of the rectangular frame. One end of the lever is rotatably contacted with the inner side of the U-plate.

[0012] In some embodiments, a crossbar is provided at the top of the lever, the top of the lever is fixedly connected to the bottom of the crossbar, and a semi-circular groove is provided on the inner wall of the crossbar, the inner surface of the semi-circular groove being rotatably engaged with the outer side of the semi-circular block.

[0013] In some embodiments, a sub-block is provided at the middle of the inner wall of the sector plate, the middle of the inner wall of the sector plate is rotatably in contact with the outer side of the sub-block, a spring piece is provided at one end of the sub-block, one end of the sub-block is fixedly connected to one end of the spring piece, the other end of the spring piece is fixedly connected to the inner wall of the sector plate, and the bottom end of the sub-block is fixedly connected to the inner surface of the inner plate.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. Start the motor connected to the lead screw, causing the two rectangular frames on the lead screw to move in the same direction, thereby clamping and fixing the two parts. A lever is set on one side of the rectangular frame. The lever has a protrusion located inside the U-plate, and a crossbar is installed at the top of the lever. Then, the crossbar rotates 90 degrees, causing the lever to apply external force to the U-plate. Due to the external force on the U-plate, the inner plate will slide within the rectangular frame, and the fan-shaped plate will slide out from the rectangular frame. When it contacts the surface of the irregular part, it can automatically adjust the angle according to the shape of the part to achieve multi-point contact and fit. The clamping method can be switched according to the shape of the part.

[0016] 2. After the crossbar rotates 90 degrees, since there is a semi-circular groove on the crossbar and a semi-circular block on the top side of the rectangular frame, the semi-circular block naturally falls into the semi-circular groove after rotation. At this time, by rotating the handle on the rotating rod 180 degrees, the semi-circular block rotates in the same way and fits into the semi-circular groove, thus keeping the position of the crossbar after rotation still. Then, press the handle down inside the rotating rod so that the insertion rod on the handle corresponds to the locking groove on the rectangular frame in the rotated position. By pressing the handle, the insertion rod enters the locking groove, thereby fixing the position of the lever after rotation and ensuring that the external force applied to the U-plate by the lever is always stable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the clamping mechanism component of this utility model;

[0019] Figure 3 This is a schematic diagram of some components of the clamping mechanism of this utility model;

[0020] Figure 4 This is a rear view schematic diagram of the clamping mechanism assembly of this utility model;

[0021] Figure 5 This is an enlarged structural schematic diagram of the clamping mechanism component of this utility model;

[0022] Figure 6 This is a top view of the clamping mechanism assembly of this utility model;

[0023] In the diagram: 1. Clamping mechanism; 11. Rectangular frame; 12. Inner plate; 13. Sector plate; 14. Spring piece; 15. Sub-block; 16. Connecting rod; 17. U-plate; 18. Lever; 19. Crossbar; 110. Semicircular groove; 111. Semicircular block; 112. Rotating rod; 113. Inserting rod; 114. Locking groove; 115. Turning handle; 116. Base plate;

[0024] 2. Auxiliary mechanism; 21. Support rod; 22. Roller;

[0025] 3. Drive mechanism; 31. Motor; 32. Lead screw. Detailed Implementation

[0026] 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.

[0027] Example 1: Please refer to Figures 1-6This utility model provides a technical solution: a high-precision mechanical parts positioning and clamping device, comprising: a clamping mechanism 1, an auxiliary mechanism 2 provided on the bottom side of the clamping mechanism 1, a driving mechanism 3 provided at one end of the bottom side of the clamping mechanism 1, the clamping mechanism 1 including a rectangular frame 11, an inner plate 12 provided on the inner surface of the rectangular frame 11, the inner surface of the rectangular frame 11 being slidably connected to the outer side of the inner plate 12, a fan-shaped plate 13 provided at one end of the inner wall of the inner plate 12, the inner wall of the inner plate 12 being rotatably connected to one end of the fan-shaped plate 13, a connecting rod 16 provided on one side of the inner plate 12, the one side of the inner plate 12 being fixedly connected to one end of the connecting rod 16, the connecting rod 1... The other end of the 6 is provided with a U-plate 17, and the other end of the connecting rod 16 is fixedly connected to one end of the U-plate 17. The bottom side of the rectangular frame 11 is slidably connected to the top side of the base plate 116. A semi-circular block 111 is provided on the top side of the rectangular frame 11, and the top side of the rectangular frame 11 is rotatably connected to the bottom end of the semi-circular block 111. A rotating rod 112 is provided on the top end of the semi-circular block 111, and the top end of the semi-circular block 111 is fixedly connected to the bottom end of the rotating rod 112. A handle 115 is provided on the inner wall of the rotating rod 112, and the inner wall of the rotating rod 112 and the inner wall of the handle 115 are slidably connected vertically through each other. An insertion rod 113 is provided on the bottom side of the handle 115, and the bottom side of the handle 115 is connected to the insertion rod 113. The top of the 3 is fixedly connected. A locking groove 114 is provided on the top side of the rectangular frame 11. The inner surface of the locking groove 114 is perpendicularly engaged with the outer side of the bottom end of the insertion rod 113. A lever 18 is provided on one side of the rectangular frame 11. The outer side of the lever 18 is rotatably connected to the side of the rectangular frame 11. One end of the lever 18 is rotatably engaged with the inner side of the U-plate 17. A crossbar 19 is provided at the top of the lever 18. The top of the lever 18 is fixedly connected with the bottom end of the crossbar 19. A semi-circular groove 110 is provided on the inner wall of the crossbar 19. The inner surface of the semi-circular groove 110 is rotatably engaged with the outer side of the semi-circular block 111. A sub-block 15 is provided in the middle of the inner wall of the sector plate 13. The middle end of the inner wall is rotatably connected to the outer side of the sub-block 15. One end of the sub-block 15 is provided with a spring piece 14, and one end of the sub-block 15 is fixedly connected to one end of the spring piece 14. The other end of the spring piece 14 is fixedly connected to the inner wall of the fan-shaped plate 13. The bottom end of the sub-block 15 is fixedly connected to the inner surface of the inner plate 12. The drive mechanism 3 includes a motor 31. The output end of the motor 31 is provided with a lead screw 32, and the output end of the motor 31 is fixedly connected to one end of the lead screw 32. The other end of the lead screw 32 is rotatably connected to the inner wall of the bottom plate 116. One end of the bottom plate 116 is fixedly connected to one end of the motor 31. The outer side of the lead screw 32 is threadedly connected to the inner wall of one bottom end of the rectangular frame 11.

[0028] When this high-precision mechanical parts positioning and clamping device is in use, firstly, a lead screw 32 is designed in the base plate 116. The lead screw 32 is of a bidirectional type, and a rectangular frame 11 is threaded to the outside of the lead screw 32. There are two rectangular frames 11. Therefore, by starting the motor 31 connected to the lead screw 32, the two rectangular frames 11 on the lead screw 32 move in the same direction, thereby clamping and fixing the parts between them.

[0029] To accommodate irregularly shaped mechanical parts, an inner plate 12 is provided inside the rectangular frame 11. A sector-shaped plate 13 is installed on the inner wall of the inner plate 12, with one end of the sector-shaped plate 13 rotatably connected to one end of the inner wall of the inner plate 12. A connecting rod 16 is designed on one side of the inner plate 12, and one end of the connecting rod 16 is connected to the U-plate 17. Furthermore, to allow the sector-shaped plate 13 on the inner plate 12 to slide out of the rectangular frame 11, a lever 18 is provided on one side of the rectangular frame 11. The lever 18 has a protruding portion located inside the U-plate 17, and a crossbar 19 is installed at the top of the lever 18. 9. Rotate 90 degrees so that lever 18 begins to exert external force on U-plate 17. Due to the external force on U-plate 17, inner plate 12 will slide within rectangular frame 11, and fan-shaped plate 13 will slide out from rectangular frame 11. When it contacts the surface of irregular parts, it can automatically adjust the angle according to the shape of the parts to achieve multi-point contact and fit, further fine-tune the position of the parts, and ensure that the parts achieve high-precision positioning during clamping. This effectively reduces positioning errors caused by irregular part shapes. Therefore, in this way, the clamping method can be switched according to the shape of the parts, further improving flexibility.

[0030] Secondly, after the crossbar 19 is rotated 90 degrees, since a semi-circular groove 110 is provided on the crossbar 19 and a semi-circular block 111 is designed on the top side of the rectangular frame 11, the semi-circular block 111 naturally falls into the semi-circular groove 110 after rotation. At this time, by rotating the handle 115 on the rotating rod 112 180 degrees, the semi-circular block 111 rotates in the same way and fits into the semi-circular groove 110, thus keeping the position of the crossbar 19 after rotation still. Then, the handle 115 is pressed down in the rotating rod 112, so that the insertion rod 113 on the handle 115 corresponds to the locking groove 114 on the rectangular frame 11 when rotated. By pressing the handle 115, the insertion rod 113 enters the locking groove 114, thereby fixing the position of the lever 18 after rotation and ensuring that the external force given to the U plate 17 by the lever 18 is always stable.

[0031] Example 2: Please refer to Figures 1-6The auxiliary mechanism 2 includes a support rod 21, a roller 22 is provided at the bottom end of the support rod 21, the bottom end of the support rod 21 is rotatably connected to the inner side of the roller 22, a base plate 116 is provided on the outer side of the roller 22, and the outer side of the roller 22 is slidably connected to the top side of the base plate 116.

[0032] A support rod 21 is installed on the bottom side of the rectangular frame 11, and a roller 22 is designed at the bottom end of the support rod 21. Therefore, when the rectangular frame 11 moves, the roller 22 on the support rod 21 will roll against the base plate 116. Compared with sliding friction, rolling friction has much less resistance. This makes the movement of the rectangular frame 11 smoother, and the driving force required by the motor 31 is correspondingly reduced, thus reducing energy loss. It also reduces wear and heat generation problems caused by excessive friction. Furthermore, the support rod 21 allows the rectangular frame 11 to move smoothly during movement, preventing large-scale swaying.

[0033] Please see Figures 1-6 By starting the motor 31 connected to the lead screw 32, the two rectangular frames 11 on the lead screw 32 move in the same direction, thereby clamping and fixing the parts between them. An inner plate 12 is provided inside the rectangular frame 11, and a sector plate 13 is installed on the inner wall of the inner plate 12. One end of the sector plate 13 is rotatably connected to one end of the inner wall of the inner plate 12. At this time, a connecting rod 16 is designed on one side of the inner plate 12, and one end of the connecting rod 16 is connected to the U plate 17. In order to allow the sector plate 13 on the inner plate 12 to slide out from the rectangular frame 11, a lever 18 is provided on one side of the rectangular frame 11. The lever 18 has a protrusion located inside the U plate 17, and a crossbar 19 is installed at the top of the lever 18. The crossbar 19 can then rotate 90 degrees. This causes the lever 18 to exert an external force on the U-plate 17. As the U-plate 17 is subjected to external force, the inner plate 12 will slide within the rectangular frame 11, and the fan-shaped plate 13 will slide out from the rectangular frame 11. This allows it to automatically adjust its angle according to the outline of the irregular part when it comes into contact with the surface of the part, achieving multi-point contact and fit. After the crossbar 19 is rotated 90 degrees, since a semi-circular groove 110 is provided on the crossbar 19, and a semi-circular block 111 is designed on the top side of the rectangular frame 11, the semi-circular block 111 will naturally be located in the semi-circular groove 110 after rotation. At this time, by rotating the handle 115 on the rotating rod 112 180 degrees, the semi-circular block 111 will rotate in the same way and fit with the semi-circular groove 110, thereby keeping the position of the crossbar 19 after rotation still.

[0034] As the rectangular frame 11 moves, the rollers 22 on the support rod 21 will roll against the base plate 116. Compared to sliding friction, rolling friction has much less resistance. This makes the movement of the rectangular frame 11 smoother, and the driving force required by the motor 31 is reduced accordingly, thus reducing energy loss. It also reduces wear and heat generation caused by excessive friction. In addition, the support rod 21 allows the rectangular frame 11 to move smoothly during its movement.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A high-precision mechanical part positioning and clamping device, comprising, characterized in that: A clamping mechanism (1) is provided with an auxiliary mechanism (2) on its bottom side and a driving mechanism (3) on one end of its bottom side. The clamping mechanism (1) includes a rectangular frame (11). An inner plate (12) is provided on the inner surface of the rectangular frame (11). The inner surface of the rectangular frame (11) is slidably connected to the outer side of the inner plate (12). A fan-shaped plate (13) is provided on one end of the inner wall of the inner plate (12). The inner wall of the inner plate (12) is rotatably connected to one end of the fan-shaped plate (13). A connecting rod (16) is provided on one side of the inner plate (12). The one side of the inner plate (12) is fixedly connected to one end of the connecting rod (16). A U-plate (17) is provided on the other end of the connecting rod (16). The other end of the connecting rod (16) is fixedly connected to one end of the U-plate (17).

2. The high-precision mechanical parts positioning and clamping device according to claim 1, characterized in that: The auxiliary mechanism (2) includes a support rod (21), a roller (22) is provided at the bottom end of the support rod (21), the bottom end of the support rod (21) is rotatably connected to the inner side of the roller (22), a base plate (116) is provided on the outer side of the roller (22), and the outer side of the roller (22) is slidably connected to the top side of the base plate (116).

3. The high-precision mechanical parts positioning and clamping device according to claim 2, characterized in that: The drive mechanism (3) includes a motor (31), and a lead screw (32) is provided at the output end of the motor (31). The output end of the motor (31) is fixedly connected to one end of the lead screw (32), and the other end of the lead screw (32) is rotatably connected to the inner wall of the base plate (116). One end of the base plate (116) is fixedly connected to one end of the motor (31), and the outer side of the lead screw (32) is threadedly connected to the inner wall of one bottom end of the rectangular frame (11).

4. The high-precision mechanical parts positioning and clamping device according to claim 3, characterized in that: The bottom side of the rectangular frame (11) is slidably connected to the top side of the base plate (116). A semicircular block (111) is provided on the top side of the rectangular frame (11). The top side of the rectangular frame (11) is rotatably connected to the bottom end of the semicircular block (111). A rotating rod (112) is provided on the top end of the semicircular block (111). The top end of the semicircular block (111) is fixedly connected to the bottom end of the rotating rod (112).

5. The high-precision mechanical parts positioning and clamping device according to claim 4, characterized in that: The inner wall of the rotating rod (112) is provided with a handle (115), and the inner wall of the rotating rod (112) and the inner wall of the handle (115) are connected vertically and slidably through each other. The bottom side of the handle (115) is provided with a plug (113), and the bottom side of the handle (115) is fixedly connected to the top end of the plug (113).

6. The high-precision mechanical parts positioning and clamping device according to claim 5, characterized in that: The top side of the rectangular frame (11) is provided with a locking groove (114), the inner surface of the locking groove (114) is perpendicularly engaged with the outer side of the bottom end of the insertion rod (113), and a lever (18) is provided at one side end of the rectangular frame (11). The outer side of the rectangular frame (11) is rotatably connected to the outer side of the lever (18), and one end of the lever (18) is rotatably contacted with the inner side of the U plate (17).

7. The high-precision mechanical parts positioning and clamping device according to claim 6, characterized in that: The top of the lever (18) is provided with a crossbar (19), the top of the lever (18) is fixedly connected to the bottom of the crossbar (19), and a semi-circular groove (110) is provided on the inner wall of the crossbar (19). The inner surface of the semi-circular groove (110) is rotatably engaged with the outer side of the semi-circular block (111).

8. The high-precision mechanical parts positioning and clamping device according to claim 1, characterized in that: A sub-block (15) is provided at the middle of the inner wall of the sector plate (13). The middle of the inner wall of the sector plate (13) is rotatably contacted with the outer side of the sub-block (15). A spring piece (14) is provided at one end of the sub-block (15). One end of the sub-block (15) is fixedly connected to one end of the spring piece (14). The other end of the spring piece (14) is fixedly connected to the inner wall of the sector plate (13). The bottom end of the sub-block (15) is fixedly connected to the inner surface of the inner plate (12).

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