A deformation prevention device for machining curved, thin-walled, deep cylindrical parts

Abstract

This invention relates to an anti-deformation device for machining curved, thin-walled, deep cylindrical parts. It includes a base and a pair of support frames mounted on the upper surface of the base. Connecting discs are movably disposed on the surfaces of the pair of support frames. A connecting block is movably disposed on the side wall of one of the connecting discs. A connecting shaft is disposed on the surface of the connecting block, and a lifting assembly is disposed on the surface of the connecting shaft. The lifting assembly is used to lift the workpiece. In this invention, by incorporating the lifting assembly, the rotation of the connecting shaft inside the lifting assembly causes the surface-engaged lead screw collar to move relative to it. This movement, via a swing arm, causes the end support plate to move upward. The upward movement of the support plate compresses the deep cylindrical body. During this process, a guide block is compressed and moves to both sides, ultimately causing the groove inside the guide block to engage with the side wall of the deep cylindrical body and lift the deep cylindrical body. This reduces uneven deformation caused by stress during the machining of the deep cylindrical body, thus preventing deformation and making it suitable for widespread application.

Description

Technical Field

[0001] This invention belongs to the field of parts processing technology, specifically, it relates to an anti-deformation device for processing curved thin-walled deep cylindrical parts. Background Technology

[0002] The parts to be processed are curved, thin-walled, deep cylinders. If spin forming is used, the cost of mold making and part fabrication is too high, the production cycle is long, and the economic efficiency is poor. Machining is a more economical and cost-effective method. During machining, the curved, thin-walled cylinders require a grinding process to remove burrs from both the inside and outside, improving the production quality.

[0003] During the grinding process of curved thin-walled cylinders, due to the thinness of the product wall, when clamping it with a three-jaw chuck, it is necessary to forcefully squeeze the jaws inward, which can easily cause deformation of the thin-walled cylinder itself, thereby affecting the quality of the finished product manufactured later.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0006] A deformation prevention device for machining curved thin-walled deep cylindrical parts includes a base and a pair of support frames mounted on the upper surface of the base. The surfaces of the pair of support frames are movably provided with connecting plates. One of the connecting plates is movably provided with a connecting block on its side wall. The surface of the connecting block is provided with a connecting shaft. The surface of the connecting shaft is provided with a lifting component. The lifting component is used to lift the workpiece.

[0007] The lifting assembly includes a lead screw collar, which is sleeved on the surface of the connecting shaft. Four pairs of swing arms are movably hinged to the side wall of the lead screw collar. A support plate is movably mounted at the end of each pair of swing arms. Limiting grooves are provided at the ends of both sides of the support plate. Guide blocks are movably mounted on the surface of the limiting grooves. The guide blocks are triangular in shape and have grooves at their bottoms. Deep cylinder bodies are sleeved on the outer surfaces of the four support plates, and the thickness of the deep cylinder bodies is less than the thickness of the grooves.

[0008] In a preferred embodiment of the present invention, a limiting plate is provided on the side wall of the support plate at the bottom. A through groove is provided inside the limiting plate, and a positioning rod is movably inserted into the surface of the through groove. The width of the positioning rod is the same as the width of the through groove, and the length of the positioning rod is less than the length of the through groove. The positioning rod is fixedly installed on the surface of the base.

[0009] In a preferred embodiment of the present invention, a turntable is fixedly provided on the central shaft of one of the connecting discs. The turntable is located on the outside of the support frame, and a handle is provided on the surface of the turntable, with an anti-slip sleeve fitted onto the surface of the handle.

[0010] In a preferred embodiment of the present invention, the surface of the connecting shaft is respectively provided with positive lead screw threads and negative lead screw threads, the positive lead screw threads and negative lead screw threads are symmetrically distributed, and lead screw collars are engaged on both the positive lead screw thread and negative lead screw thread surfaces.

[0011] In a preferred embodiment of the present invention, a limiting rod is provided laterally inside the limiting groove, the surface of the limiting rod movably passes through the guide block, and a return spring is sleeved on the outer surface of the limiting rod. One side of the return spring is engaged with the inner side of the limiting groove, and the other side of the return spring is fixedly disposed on the side wall of the guide block.

[0012] In a preferred embodiment of the present invention, the guide block has a cavity inside, and a rod is movably inserted through the cavity and the groove. A pressure plate is fixedly installed at the end of the rod located inside the groove. A compression spring is installed on the side wall of the pressure plate, and the other side of the compression spring is snapped onto the side wall of the groove.

[0013] In a preferred embodiment of the present invention, a swing arm is movably provided at the other end of the insertion rod, a locking rod is movably provided at the end of the swing arm, and the locking rod movably passes through the guide block. A pull rod is fixedly provided on the surface of the locking rod, and the pull rod movably passes through the side wall of the guide block. A stepped locking block is provided on the side wall of the support plate, and the groove of the stepped locking block is vertically corresponding to the locking rod.

[0014] In a preferred embodiment of the present invention, a positioning block is fixedly provided on the surface of another connecting plate. A positioning groove is provided on the surface of the positioning block. A rectangular block is provided inside the positioning groove, and the positioning groove and the rectangular block are adapted to each other in size. The end of the rectangular block is fixedly connected to the connecting shaft. A sealing plate is movably provided on the upper surface of the positioning groove, and a baffle is movably provided on the side wall of the positioning groove.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This invention incorporates a lifting assembly. The rotation of the connecting shaft within the lifting assembly causes the surface-engaged lead screw collar to move relative to it. A swing arm then drives the end support plate to move upwards. This upward movement of the support plate compresses the deep cylinder body. During this process, the guide block is compressed and moves to both sides, ultimately causing the groove inside the guide block to engage with the sidewall of the deep cylinder body. This lifting of the deep cylinder body reduces uneven deformation during processing and prevents deformation.

[0017] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] In the attached diagram:

[0019] Figure 1 A schematic diagram of the overall structure of an anti-deformation device for machining a curved, thin-walled, deep cylindrical part;

[0020] Figure 2 A schematic diagram of the internal structure of an anti-deformation device for machining a curved, thin-walled, deep cylindrical part;

[0021] Figure 3 Deformation prevention device for machining a curved, thin-walled, deep cylindrical part Figure 2 Enlarged view of point A;

[0022] Figure 4 Deformation prevention device for machining a curved, thin-walled, deep cylindrical part Figure 2 Enlarged view of point B;

[0023] Figure 5 Deformation prevention device for machining a curved, thin-walled, deep cylindrical part Figure 4 A sectional view;

[0024] Figure 6 This is a front view of an anti-deformation device for machining curved, thin-walled, deep cylindrical parts.

[0025] In the diagram: 1. Base; 2. Support frame; 3. Connecting plate; 4. Connecting block; 5. Connecting shaft; 6. Positive thread; 7. Reverse thread; 8. Threaded rod collar; 9. Swing arm; 10. Support plate; 11. Guide block; 12. Groove; 13. Limiting slide; 14. Limiting rod; 15. Return spring; 16. Stepped locking block; 17. Pull rod; 18. Locking rod; 19. Swing arm; 20. Insert rod; 21. Pressure plate; 22. Compression spring; 23. Limiting plate; 24. Through groove; 25. Positioning rod; 26. Turntable; 27. Handle; 28. Positioning block; 29. ​​Positioning groove; 30. Rectangular block; 31. Sealing plate; 32. Baffle; 33. Deep cylinder body. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0027] Example 1:

[0028] like Figures 1 to 6As shown, an anti-deformation device for machining curved thin-walled deep cylindrical parts includes a base 1 and a pair of support frames 2 mounted on the upper surface of the base 1. A connecting plate 3 is movably disposed on the surface of the pair of support frames 2. A connecting block 4 is movably disposed on the side wall of one of the connecting plates 3. A connecting shaft 5 is disposed on the surface of the connecting block 4. A lifting component is disposed on the surface of the connecting shaft 5. The lifting component is used to lift the workpiece.

[0029] The lifting assembly includes a lead screw collar 8, which is sleeved on the surface of the connecting shaft 5. Four pairs of swing arms 9 are movably hinged to the side wall of the lead screw collar 8. A support plate 10 is movably mounted at the end of each pair of swing arms 9. Limiting grooves 13 are provided on both sides of the support plate 10. Guide blocks 11 are movably mounted on the surface of the limiting grooves 13. The guide blocks 11 are triangular in shape and have grooves 12 at their bottom. Deep cylinder bodies 33 are sleeved on the outer surfaces of the four support plates 10, and the thickness of the deep cylinder body 33 is less than the thickness of the grooves 12. With the lifting assembly, the rotation of the connecting shaft inside the assembly causes the lead screw collar, which is engaged with the surface, to begin relative movement. The swing arms then drive the end support plates to move upwards, pressing against the deep cylinder body. During this upward movement, the support plates press against the guide blocks, causing them to move to both sides. Ultimately, the grooves inside the guide blocks engage with the side wall of the deep cylinder body, lifting the deep cylinder body. This reduces uneven deformation during the processing of the deep cylinder body and prevents deformation.

[0030] like Figures 1 to 6 As shown, in a specific embodiment, a limiting plate 23 is provided on the side wall of the support plate 10 at the bottom. A through groove 24 is provided inside the limiting plate 23. A positioning rod 25 is movably inserted into the surface of the through groove 24. The width of the positioning rod 25 is the same as the width of the through groove, and the length of the positioning rod 25 is less than the length of the through groove. The positioning rod 25 is fixedly set on the surface of the base 1. By providing the positioning rod 25 and the through groove 24, the positioning function is mainly used to ensure that the entire lifting assembly will not rotate.

[0031] like Figures 1 to 6 As shown, furthermore, a turntable 26 is fixedly mounted on the central shaft of one of the connecting discs 3. The turntable 26 is located on the outside of the support frame 2, and a handle 27 is provided on the surface of the turntable 26, with an anti-slip sleeve fitted onto the surface of the handle 27. Rotating the turntable 26 causes the connecting disc 3, the connecting block 4, and the connecting shaft 5 to begin rotating.

[0032] like Figures 1 to 6As shown, the surface of the connecting shaft 5 is respectively provided with positive screw threads 6 and negative screw threads 7, which are symmetrically distributed. Screw collars 8 are engaged on both the positive screw threads 6 and the negative screw threads 7. The presence of positive screw threads 6 and negative screw threads 7 on the surface of the connecting shaft 5 causes the engaged screw collars 8 to move towards the center. This movement of the screw collars 8 causes a change in the angle of the swing arm 9, and the support plate 10 at the lifting end moves outward, thus contacting the surface of the deep cylinder body 33.

[0033] Example 2:

[0034] like Figures 1 to 6 As shown, in a specific embodiment, a limiting rod 14 is laterally arranged inside the limiting groove 13. The surface of the limiting rod 14 movably passes through the guide block 11. A return spring 15 is sleeved on the outer surface of the limiting rod 14. One side of the return spring 15 is engaged with the inner side of the limiting groove 13, and the other side of the return spring 15 is fixedly arranged on the side wall of the guide block 11. First, the deep cylinder body 33 contacts the guide block 11, causing the guide block 11 to start moving to both sides, and the internal compression spring 22 begins to compress until the groove 12 on the surface of the deep cylinder body 33 is inserted into the interior of the deep cylinder body 33. At this time, the compression spring 22 begins to drive the guide block 11 to move and drive the guide block 11 back to its initial position.

[0035] like Figures 1 to 6 As shown, the guide block 11 has a cavity inside, and a rod 20 is movably inserted through the cavity and the groove 12. A pressure plate 21 is fixedly installed at the end of the rod 20 located inside the groove 12. A compression spring 22 is installed on the side wall of the pressure plate 21, and the other side of the compression spring 22 is engaged with the side wall of the groove 12. A swing rod 19 is movably installed at the other end of the rod 20, and a locking rod 18 is movably installed at the end of the swing rod 19. The locking rod 18 movably penetrates the guide block 11. A pull rod 17 is fixedly installed on the surface of the locking rod 18. The pull rod 17 movably penetrates the side wall of the guide block 11. A stepped locking block 16 is installed on the side wall of the support plate 10, and the groove of the stepped locking block 16 is vertically aligned with the locking rod 18. The pressure plate 21 and the insertion rod 20 move inward, thereby driving the locking rod 18 to move vertically downward through the swing rod 19, so as to insert it into the bottom stepped locking block 16, thereby locking the state and ensuring that the support plate always lifts the deep cylinder body 33, which achieves the purpose of preventing deformation.

[0036] like Figures 1 to 6As shown, in a specific embodiment, a positioning block 28 is fixedly provided on the surface of another connecting plate 3. A positioning groove 29 is provided on the surface of the positioning block 28. A rectangular block 30 is provided inside the positioning groove 29, and the dimensions of the positioning groove 29 and the rectangular block 30 are adapted. The end of the rectangular block 30 is fixedly connected to the connecting shaft 5. A sealing plate 31 is movably provided on the upper surface of the positioning groove 29, and a baffle 32 is movably provided on the side wall of the positioning groove 29. First, the rectangular block 30 of the device needs to be separated from the positioning groove 29, that is, the connecting shaft 5 and the connecting block 4 are driven to rotate along the connecting plate 3. After rotating a certain angle, the deep cylinder body 33 is movably inserted into the outside of the support plate 10. At this time, the connecting shaft 5 and the connecting block 4 are reset, and the rectangular block 30 is re-inserted into the positioning groove 29. The notch of the positioning groove 29 is sealed by the sealing plate 31. The baffle 32 is rotated so that one side of the baffle 32 covers the surface of the sealing plate 31, which plays a positioning role.

[0037] The implementation principle of the anti-deformation device for machining curved thin-walled deep cylindrical parts in this embodiment is as follows: When the device is needed, the rectangular block 30 of the device needs to be separated from the positioning groove 29, that is, the connecting shaft 5 and the connecting block 4 are rotated along the connecting plate 3. After rotating a certain angle, the deep cylindrical body 33 is movably inserted into the outside of the support plate 10. At this time, the connecting shaft 5 and the connecting block 4 are reset, and the rectangular block 30 is re-inserted into the positioning groove 29. The notch of the positioning groove 29 is sealed by the sealing plate 31. The baffle 32 is rotated so that one side of the baffle 32 covers the surface of the sealing plate 31, which plays a positioning role.

[0038] Next, the user needs to rotate the turntable 26, which drives the connecting plate 3, connecting block 4, and connecting shaft 5 to rotate. The connecting shaft 5 has positive screw threads 6 and negative screw threads 7 on its surface, which drives the screw collar 8, which is engaged on the surface, to move towards the center. The movement of the screw collar 8 causes the angle of the swing arm 9 to change, and the support plate 10 at the lifting end moves outward, thus contacting the surface of the deep cylinder body 33. First, the deep cylinder body 33 contacts the guide block 11, which drives the guide block 11 to move to both sides, and the internal compression spring 22 begins to compress until the deep cylinder body... The groove 12 on the surface of the body 33 is inserted into the inside of the deep cylinder body 33. At this time, the compression spring 22 starts to drive the guide block 11 to move and drive the guide block 11 back to the initial position. During this process, the bottom pressure plate 21 and the insertion rod 20 will move inward, thereby driving the locking rod 18 to move vertically downward through the swing rod 19, so as to insert it into the bottom stepped locking block 16, thereby locking the state and ensuring that the support plate always lifts the deep cylinder body 33, which achieves the purpose of preventing deformation. Later, the locking rod 18 can be moved by the pull rod 17 for easy reset later.

Claims

1. A deformation-preventing device for machining a curved thin-walled deep-cylindrical part, comprising a base (1) and a pair of supporting frames (2) installed on the upper surface of the base (1), characterized in that, A pair of said support frame (2) surface activity is provided with a connecting disc (3), one of said connecting disc (3) side wall activity is provided with a connecting block (4), the surface of the connecting block (4) is provided with connecting shaft (5), the connecting shaft (5) surface respectively open has positive screw thread (6) and reverse screw thread (7), the positive screw thread (6) and reverse screw thread (7) are symmetrically distributed, and the positive screw thread (6) and reverse screw thread (7) surface are engaged with screw sleeve ring (8); The side wall of the screw sleeve ring (8) is movably hinged with four swing arms (9), the corresponding swing arms (9) on the two screw sleeve rings (8) are movably connected with the same support plate (10) at the end, the two ends of the support plate (10) are provided with a limiting sliding groove (13), the surface of the limiting sliding groove (13) is movably provided with a guide block (11), the inner side of the limiting sliding groove (13) is clamped with a reset spring (15), the other side of the reset spring (15) is fixedly arranged on the side wall of the guide block (11), the guide block (11) is triangular, a groove (12) is formed in the side of the guide block (11) away from the support frame (2), four support plates (10) are sleeved with a deep cylinder body (33), and the thickness of the deep cylinder body (33) is less than the thickness of the groove (12).

2. The anti-deformation device for processing a curved thin-walled deep cylindrical part according to claim 1, characterized in that, The side wall of the support plate (10) at the bottom is provided with a limiting plate (23), the inside of the limiting plate (23) is provided with a through groove (24), the surface of the through groove (24) is movably inserted with a positioning rod (25), the width of the positioning rod (25) is the same as the width of the through groove, the length of the positioning rod (25) is less than the length of the through groove, and the positioning rod (25) is fixedly arranged on the surface of the base (1).

3. The anti-deformation device for processing a curved thin-walled deep cylindrical part according to claim 1, characterized in that, One of the connecting discs (3) is fixedly arranged with a rotating disc (26) at the center axis, the rotating disc (26) is arranged outside the support frame (2), the surface of the rotating disc (26) is provided with a handle (27), and the surface of the handle (27) is sleeved with an anti-skid sleeve.

4. The anti-deformation device for processing a curved thin-walled deep cylindrical part according to claim 1, characterized in that, The inner side of the limiting sliding groove (13) is transversely provided with a limiting rod (14), the surface of the limiting rod (14) is movably penetrated through the guide block (11), and the reset spring (15) is movably sleeved on the limiting rod (14).

5. The anti-deformation device for processing a curved thin-walled deep cylindrical part according to claim 1, characterized in that, The inside of the guide block (11) is provided with a cavity, the inside of the cavity and the groove (12) is movably penetrated with an insertion rod (20), the end of the insertion rod (20) at the inside of the groove (12) is fixedly arranged with a pressing plate (21), the side wall of the pressing plate (21) is provided with an extrusion spring (22), the other side of the extrusion spring (22) is clamped on the side wall of the groove (12).

6. The anti-deformation device for processing a curved thin-walled deep cylindrical part according to claim 5, characterized in that, The other end of the insertion rod (20) is movably provided with a swing rod (19), the end of the swing rod (19) is movably provided with a clamping rod (18), the clamping rod (18) is movably penetrated through the bottom wall of the guide block (11), the surface of the clamping rod (18) is fixedly provided with a pull rod (17), the pull rod (17) is movably penetrated through the side wall of the guide block (11), the side wall of the support plate (10) is provided with a stepped clamping block (16), the groove of the stepped clamping block (16) is vertically corresponding to the clamping rod (18).

7. The anti-deformation device for processing a curved thin-walled deep cylindrical part according to claim 1, characterized in that, Another said connecting disc (3) surface is fixedly provided with a positioning block (28), the positioning block (28) surface is provided with a positioning groove (29), the positioning groove (29) is internally provided with a rectangular block (30), and the positioning groove (29) and the rectangular block (30) are size adapted, the rectangular block (30) end is fixedly connected with the connecting shaft (5), the upper surface of the positioning groove (29) is movably provided with a sealing plate (31), and the side wall of the positioning groove (29) is movably provided with a baffle (32).

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