High-precision diaphragm chuck clamp for processing movable disc

Abstract

The utility model discloses a high-precision diaphragm chuck clamp for machining a movable disc, which belongs to the technical field of movable disc machining and comprises a bottom plate, and a pre-positioning mechanism is mounted at the upper end of the bottom plate. Flexible self-centering clamping mechanisms are mounted at the upper end of the bottom plate and in the bottom plate; the flexible self-centering clamping mechanism comprises an oil cylinder chuck, a diaphragm body, a clamping jaw, a positioning supporting block, a positioning pin, a mounting ring and a mounting fixing ring. By means of the mode, through cooperation of the diaphragm body and the clamping jaws, the device achieves higher positioning precision through small clamping force, the accurate position of the movable scroll plate in the machining process is guaranteed, the machining quality of the movable scroll plate can be improved, and deformation of the movable scroll plate can be prevented; and the movable scroll plate is in a vortex shape, so that accurate positioning of the vortex end part of the movable scroll plate is ensured through the pre-positioning mechanism, and the practicability of the device is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of dynamic disc processing, and specifically relates to a high-precision diaphragm chuck clamp for dynamic disc processing. BACKGROUND

[0002] Dynamic discs are key components in mechanical equipment such as compressors, and their machining precision and surface quality directly affect the performance and service life of the equipment. Moreover, since dynamic discs are usually in the shape of a vortex, a high-precision clamp is needed to ensure machining accuracy.

[0003] Chinese patent CN216576790U discloses a dynamic scroll disc machining clamp, which comprises a base plate, a dynamic clamping mechanism and a static clamping mechanism are arranged on the base plate, the dynamic clamping mechanism comprises two horizontal wedge-shaped sliding blocks, a vertical wedge-shaped sliding block, a cylinder and a base, the horizontal wedge-shaped sliding blocks are respectively located on the two sides of the vertical wedge-shaped sliding block, and the horizontal wedge-shaped sliding blocks are in sliding contact with the vertical wedge-shaped sliding block, the telescopic arm of the cylinder passes through the base plate to connect the vertical wedge-shaped sliding block, the outer side of the horizontal wedge-shaped sliding block is provided with a limiting block, the static clamping mechanism comprises two U-shaped clamping seats, the top of the U-shaped clamping seat is provided with a positioning pin, and the inner side is provided with a thread, and the two U-shaped clamping seats are respectively arranged on the two sides of the two limiting blocks. However, the device still has the following problems in the process of use:

[0004] The device uses the axial force of the oil cylinder to make the clamping jaw move radially, but the oil cylinder and the clamping jaw are rigidly connected, which may cause inaccurate clamping, uneven clamping force distribution, and long-term use may also cause wear of the clamping jaw.

[0005] Therefore, the utility model designs a high-precision diaphragm chuck clamp for dynamic disc processing to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] In view of the above shortcomings of the prior art, the utility model provides a high-precision diaphragm chuck clamp for dynamic disc processing.

[0007] To achieve the above purposes, the utility model realizes the following technical solutions:

[0008] The high-precision diaphragm chuck clamp for machining a moving disc comprises a base plate, a flexible self-centering clamping mechanism, a moving scroll disc and a pre-positioning mechanism. The upper end of the base plate is provided with the pre-positioning mechanism for preliminarily positioning the moving scroll disc. The upper end of the base plate and the inside of the base plate are provided with the flexible self-centering clamping mechanism for self-centering clamping the moving scroll disc and preventing the moving scroll disc from having a large deformation. The flexible self-centering clamping mechanism comprises a cylinder chuck, a diaphragm body, a clamping jaw, a positioning support block, a positioning pin, a mounting ring and a mounting fixed ring. The cylinder chuck is fixedly installed at the middle of the base plate. The diaphragm body is fixedly installed on the movable end of the cylinder chuck and is in communication with the oil passage provided on the cylinder chuck. A plurality of clamping jaws are installed on the diaphragm body. A plurality of positioning support blocks are fixedly installed on the upper end of the base plate. A positioning pin is fixedly installed in the inside of the positioning support block. A mounting ring is fixedly installed at the middle of the upper end of the base plate. The lower end of the mounting fixed ring is fixedly connected with the plurality of positioning support blocks. An avoiding groove is provided at the right side of the outside end of the mounting fixed ring.

[0009] Further, the diaphragm body comprises a diaphragm support part and a diaphragm deformation part. The diaphragm support part is fixedly connected with the piston movable end of the cylinder chuck. A plurality of diaphragm deformation parts are fixedly installed on the upper end of the diaphragm support part. The clamping jaw is fixedly connected with the diaphragm deformation part.

[0010] Further, the diaphragm deformation parts are uniformly distributed in a circumferential array on the diaphragm support part.

[0011] Further, the contact part between the clamping jaw and the moving scroll disc is made of soft rubber.

[0012] Further, the pre-positioning mechanism comprises a first pre-positioning assembly, a second pre-positioning assembly and a third pre-positioning assembly. The first pre-positioning assembly is installed on the right side of the upper end of the base plate. The first pre-positioning assembly is connected with the right side of the vortex end of the moving scroll disc. The second pre-positioning assembly is installed on the back side of the upper end of the base plate. The second pre-positioning assembly is connected with the back side of the vortex end of the moving scroll disc. The third pre-positioning assembly is installed on the left side of the upper end of the base plate. The third pre-positioning assembly is connected with the upper end of the moving scroll disc.

[0013] Further, the first pre-positioning assembly comprises a mistake-proof air cylinder, a first positioning column and a limiting plate. The mistake-proof air cylinder is fixedly installed on the right side of the upper end of the base plate. The limiting plate is fixedly installed on the right side of the upper end of the base plate. The installation position of the limiting plate is below the output end of the mistake-proof air cylinder. The output end of the mistake-proof air cylinder is fixedly provided with the first positioning column which is in contact with the right side of the vortex end of the moving scroll disc. The lower end of the first positioning column is in limiting sliding connection with the limiting plate.

[0014] Further, the second pre-positioning assembly comprises a supporting air cylinder and a second positioning column. The supporting air cylinder is fixedly installed on the back side of the upper end of the base plate. The output end of the supporting air cylinder is fixedly provided with the second positioning column which is in contact with the back side of the vortex end of the moving scroll disc.

[0015] Further, the third pre-positioning assembly comprises a rotary down-pressing cylinder and a pressing plate, the rotary down-pressing cylinder is fixedly installed at the left upper end of the base plate, and the output end of the rotary down-pressing cylinder is fixedly installed with the pressing plate which is in contact with the upper end of the orbiting scroll.

[0016] Compared with the prior art, the utility model discloses the beneficial effects that: first, the dynamic scroll is placed on the positioning support block, the positioning hole on the dynamic scroll is aligned with the positioning pin at this time, then the pre-positioning mechanism works to correct the position of the dynamic scroll on the positioning support block, and the dynamic scroll is pushed down, so that the bottom of the dynamic scroll is inserted into the middle of the mounting ring, then the oil cylinder chuck works, so that the diaphragm body is deformed, and all the clamping jaws are simultaneously retracted or expanded towards the outer end of the dynamic scroll according to the deformation of the diaphragm body. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 is a perspective view of the dynamic disc machining high-precision diaphragm chuck clamp of the utility model; Figure 1 ;

[0019] Figure 2 is a front view of the dynamic disc machining high-precision diaphragm chuck clamp of the utility model;

[0020] Figure 3 is a right view of the dynamic disc machining high-precision diaphragm chuck clamp of the utility model;

[0021] Figure 4 is a perspective view of the dynamic disc machining high-precision diaphragm chuck clamp of the utility model; Figure 2 ;

[0022] Figure 5 is a perspective view cut along the A-A direction of the utility model; Figure 3 ​

[0023] Figure 6 For Figure 4 Enlarged view at B;

[0024] Figure 7 For the perspective view of the diaphragm body and the clamping jaw;

[0025] Figure 8 For the structure schematic diagram of the orbiting scroll.

[0026] The reference signs in the figures respectively represent:

[0027] 1, base plate; 2, flexible self-centering clamping mechanism; 21, oil cylinder chuck; 22, diaphragm body; 221, diaphragm support part; 222, diaphragm deformation part; 23, clamping jaw; 24, positioning support block; 25, positioning pin; 26, mounting ring; 27, mounting fixed ring; 28, avoiding groove; 3, orbiting scroll; 31, vortex end; 4, pre-positioning mechanism; 41, error-proof air cylinder; 42, support air cylinder; 43, rotary down-pressing air cylinder; 44, pressing plate; 45, first positioning column; 46, limiting plate; 47, second positioning column. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the following description, "left", "right", "front", "back", "up", "down" are oriented with the perspective of the front view.

[0030] In some embodiments, please refer to the perspective view of the drawings in the description Figures 1-8A high-precision diaphragm chuck fixture for moving scroll machining includes a base plate 1, a flexible self-centering clamping mechanism 2, a moving scroll 3, and a pre-positioning mechanism 4. The upper end of the base plate 1 is equipped with the pre-positioning mechanism 4 for initial positioning of the moving scroll 3. The upper end and interior of the base plate 1 are equipped with the flexible self-centering clamping mechanism 2 for self-centering clamping of the moving scroll 3 and preventing large deformation of the moving scroll 3. The flexible self-centering clamping mechanism 2 includes a hydraulic cylinder chuck 21, a diaphragm body 22, jaws 23, a positioning support block 24, a positioning pin 25, a mounting ring 26, a mounting fixing ring 27, and a clearance groove 28. A diaphragm body 22 is fixedly installed in the middle of the base plate 1 and is fixedly installed on the movable end of the hydraulic cylinder chuck 21. The diaphragm body 22 is connected to the oil passage provided on the hydraulic cylinder chuck 21. Multiple claws 23 are installed on the diaphragm body 22. Multiple positioning support blocks 24 are fixedly installed on the upper end of the base plate 1. Positioning pins 25 are fixedly installed inside the positioning support blocks 24. An installation ring 26 is fixedly installed in the middle of the upper end of the base plate 1. The lower end of the installation ring 27 is fixedly connected to the multiple positioning support blocks 24. An avoidance groove 28 is provided on the right side of the rear of the outer end of the installation ring 27. The contact part between the claws 23 and the moving scroll plate 3 is made of soft rubber.

[0031] In this invention, the moving scroll plate 3 is first placed on the positioning support block 24, at which point the positioning hole on the moving scroll plate 3 aligns with the positioning pin 25. Then, the pre-positioning mechanism 4 corrects the position of the moving scroll plate 3 on the positioning support block 24 and pushes the moving scroll plate 3 downwards, causing its bottom to insert into the middle of the mounting ring 26. Subsequently, the hydraulic chuck 21 operates, causing the diaphragm body 22 to deform. Based on the deformation of the diaphragm body 22, all the jaws 23 are controlled to simultaneously retract or open towards the outer end of the moving scroll plate 3. When the jaws 23 move the moving scroll plate... After 3 is fixed, the pre-positioning mechanism 4 releases the pre-positioning of the moving scroll 3, and then the moving scroll 3 can be processed. The cooperation between the diaphragm body 22 and the chuck 23 enables the device to achieve higher positioning accuracy with a smaller clamping force, ensuring the accurate position of the moving scroll 3 during the processing, which can improve the processing quality of the moving scroll 3 and prevent the moving scroll 3 from deforming. Furthermore, since the moving scroll 3 is vortex-shaped, the pre-positioning mechanism 4 ensures the accurate positioning of the vortex end 31 of the moving scroll 3, further improving the practicality of the device.

[0032] The diaphragm body 22 includes a diaphragm support portion 221 and a diaphragm deformation portion 222. The diaphragm support portion 221 is fixedly connected to the piston movable end of the hydraulic cylinder chuck 21. Multiple diaphragm deformation portions 222 are fixedly installed on the upper end of the diaphragm support portion 221. The diaphragm deformation portions 222 are evenly distributed in a circumferential array on the diaphragm support portion 221. The chuck 23 is fixedly connected to the diaphragm deformation portions 222.

[0033] In this utility model, when pressurized oil is introduced into the cylinder chuck 21, the piston end pushes the diaphragm support 221 upward, causing the diaphragm deformation part 222 to bulge upward along the axial direction and drive the pawl 23 to open. When the piston end moves downward, it will drive the diaphragm deformation part 222 to concave downward along the axial direction and drive the pawl 23 to clamp.

[0034] The pre-positioning mechanism 4 includes an anti-misalignment cylinder 41, a support cylinder 42, a rotary pressing cylinder 43, a pressure plate 44, a first positioning post 45, a limiting plate 46, and a second positioning post 47. The anti-misalignment cylinder 41 is fixedly installed on the upper right side of the base plate 1, and the limiting plate 46 is fixedly installed on the upper right side of the base plate 1, with the limiting plate 46 positioned below the output end of the anti-misalignment cylinder 41. The output end of the anti-misalignment cylinder 41 is fixedly equipped with a first positioning post that contacts and abuts against the right side of the vortex end 31 of the moving scroll plate 3. 45. The lower end of the first positioning post 45 is slidably connected to the limiting plate 46 for limiting; the support cylinder 42 is fixedly installed on the upper rear side of the base plate 1, and the output end of the support cylinder 42 is fixedly installed with a second positioning post 47 that contacts and abuts against the rear of the vortex end 31 of the moving scroll plate 3; the rotating pressing cylinder 43 is fixedly installed on the upper left side of the base plate 1, and the output end of the rotating pressing cylinder 43 is fixedly installed with a pressure plate 44 that contacts and abuts against the upper end of the moving scroll plate 3. The pressure plate 44 is in contact with and connected to the upper end of the moving scroll plate 3.

[0035] The anti-misalignment cylinder 41 is used to correct the installation position of the moving scroll plate 3;

[0036] The support cylinder 42 is used to support and position the moving scroll plate 3.

[0037] In this invention, the anti-misalignment cylinder 41 drives the first positioning post 45 to move along the limiting plate 46 towards the right of the vortex end 31 of the moving scroll plate 3, and the support cylinder 42 drives the second positioning post 47 to move towards the rear of the vortex end 31 of the moving scroll plate 3. When the first positioning post 45 and the second positioning post 47 touch the moving scroll plate 3, the position of the moving scroll plate 3 within the positioning support block 24 is adjusted to ensure accurate positioning of the vortex end 31 of the moving scroll plate 3. The rotating pressing cylinder 43 drives the pressure plate 44 to move towards the upper end of the moving scroll plate 3. When the pressure plate 44 touches the upper end of the moving scroll plate 3, the rotating pressing cylinder 43 continues to work, driving the moving scroll plate 3 to move downward, so that the lower end of the moving scroll plate 3 extends into the interior of the mounting ring 26, completing the initial fixation. Then, the anti-misalignment cylinder 41 and the support cylinder 42 work to drive the first positioning post 45 and the second positioning post 47 to leave the moving scroll plate 3, and then the moving scroll plate 3 can be flexibly clamped.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-precision diaphragm chuck fixture for moving disc machining, comprising a base plate (1), characterized in that: It also includes a flexible self-centering clamping mechanism (2), a moving scroll plate (3), and a pre-positioning mechanism (4). The upper end of the base plate (1) is equipped with a pre-positioning mechanism (4) for preliminary positioning of the moving scroll plate (3). The upper end of the base plate (1) and the interior of the base plate (1) are equipped with a flexible self-centering clamping mechanism (2) for self-centering clamping of the moving scroll plate (3) and preventing the moving scroll plate (3) from undergoing large deformation. The flexible self-centering clamping mechanism (2) includes a hydraulic cylinder chuck (21), a diaphragm body (22), a chuck (23), a positioning support block (24), a positioning pin (25), a mounting ring (26), and a mounting fixing ring (27). 1) The diaphragm body (22) is fixedly installed in the middle of the base plate (1), and the diaphragm body (22) is fixedly installed on the movable end of the hydraulic cylinder chuck (21), and the diaphragm body (22) is connected to the oil passage provided on the hydraulic cylinder chuck (21); multiple claws (23) are installed on the diaphragm body (22); multiple positioning support blocks (24) are fixedly installed on the upper end of the base plate (1), and positioning pins (25) are fixedly installed inside the positioning support blocks (24); an installation ring (26) is fixedly installed in the middle of the upper end of the base plate (1); the lower end of the installation fixing ring (27) is fixedly connected to multiple positioning support blocks (24), and an avoidance groove (28) is provided on the right side of the rear end of the outer end of the installation fixing ring (27).

2. The high-precision diaphragm chuck fixture for moving disc machining according to claim 1, characterized in that, The diaphragm body (22) includes a diaphragm support (221) and a diaphragm deformation part (222). The diaphragm support (221) is fixedly connected to the piston movable end of the oil cylinder chuck (21). Multiple diaphragm deformation parts (222) are fixedly installed on the upper end of the diaphragm support (221), and the chuck (23) is fixedly connected to the diaphragm deformation part (222).

3. The high-precision diaphragm chuck fixture for moving disc machining according to claim 2, characterized in that, The diaphragm deformation portion (222) is evenly distributed in a circumferential array on the diaphragm support portion (221).

4. The high-precision diaphragm chuck fixture for moving disc machining according to claim 3, characterized in that, The contact area between the claw (23) and the moving scroll plate (3) is made of soft rubber.

5. The high-precision diaphragm chuck fixture for moving disc machining according to claim 1, characterized in that, The pre-positioning mechanism (4) includes a first pre-positioning component, a second pre-positioning component and a third pre-positioning component. The first pre-positioning component is installed on the upper right side of the base plate (1) and is connected to the right side of the vortex end (31) of the moving vortex disk (3). The second pre-positioning component is installed on the upper rear side of the base plate (1) and is connected to the rear side of the vortex end (31) of the moving vortex disk (3). The third pre-positioning component is installed on the upper left side of the base plate (1) and is connected to the upper end of the moving vortex disk (3).

6. The high-precision diaphragm chuck fixture for moving disc machining according to claim 5, characterized in that, The first pre-positioning component includes an anti-misalignment cylinder (41), a first positioning post (45), and a limiting plate (46). The anti-misalignment cylinder (41) is fixedly installed on the upper right side of the base plate (1), and the limiting plate (46) is fixedly installed on the upper right side of the base plate (1). The installation position of the limiting plate (46) is below the output end of the anti-misalignment cylinder (41). The output end of the anti-misalignment cylinder (41) is fixedly installed with a first positioning post (45) that contacts and abuts against the right side of the vortex end (31) of the moving scroll plate (3). The lower end of the first positioning post (45) is slidably connected to the limiting plate (46).

7. The high-precision diaphragm chuck fixture for moving disc machining according to claim 6, characterized in that, The second prepositioning component includes a support cylinder (42) and a second positioning post (47). The support cylinder (42) is fixedly installed on the upper rear side of the base plate (1). The output end of the support cylinder (42) is fixedly installed with a second positioning post (47) that contacts and abuts against the rear of the vortex end (31) of the moving vortex disk (3).

8. The high-precision diaphragm chuck fixture for moving disc machining according to claim 7, characterized in that, The third prepositioning component includes a rotary pressing cylinder (43) and a pressure plate (44). The rotary pressing cylinder (43) is fixedly installed on the upper left side of the base plate (1). The output end of the rotary pressing cylinder (43) is fixedly installed with a pressure plate (44) that contacts and abuts against the upper end of the moving scroll plate (3).

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