Clamping mechanism for machining high-precision thin-wall cylindrical part
By using adhesive fastening and rubber clay support, the deformation and vibration problems of thin-walled parts during processing were solved, achieving high-precision and high-quality processing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI PINGYANG IND MACHINERY
- Filing Date
- 2025-03-24
- Publication Date
- 2026-04-17
AI Technical Summary
Thin-walled parts are prone to deformation and vibration during processing, making it difficult to guarantee processing quality and accuracy. Existing radial or axial clamping methods lead to deformation and vibration marks.
The clamping method, which combines adhesive fastening with rubber clay support, uses adhesive to fix the outer periphery of the parts and rubber clay to support the processing area, replacing the traditional clamping method, thereby enhancing rigidity and eliminating vibration.
It effectively solves the problems of clamping deformation and springback deformation, eliminates vibration, ensures the machining accuracy and surface quality of thin-walled parts, and avoids the deformation and vibration marks problems of traditional clamping methods.
Smart Images
Figure CN224129207U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, specifically a clamping mechanism for machining high-precision thin-walled cylindrical parts. Background Technology
[0002] Thin-walled parts are widely used in aviation, aerospace and marine products. However, due to their poor rigidity and weak strength, these parts are prone to deformation and vibration during machining, making it difficult to guarantee the machining quality. The clamping method is the key factor affecting the machining quality of thin-walled parts.
[0003] Currently, the machining of thin-walled parts uses radial clamping methods such as three-jaw or four-jaw clamps, but these methods have significant drawbacks, directly causing part deformation. Even when axial clamping is used instead of radial clamping, the part still experiences springback deformation after machining. Furthermore, the cutting force and the rigidity of the machining system can cause resonance during the machining process, resulting in severe vibration marks on the machined surface, making it difficult to guarantee the dimensional accuracy and surface quality of the part. Therefore, this utility model proposes a clamping mechanism and method for machining high-precision thin-walled cylindrical parts, which can simply, practically, and adaptably solve the problems of deformation and vibration during the machining of thin-walled parts. Utility Model Content
[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a clamping mechanism for machining high-precision thin-walled cylindrical parts, employing a clamping method that combines adhesive fastening with rubber putty-assisted support. This method uses adhesive bonding instead of traditional clamping, effectively solving the problems of clamping deformation and springback deformation. Rubber putty is used to support the machining area of the part to enhance its rigidity, effectively eliminating vibration and ensuring the machining accuracy and surface quality of the thin-walled parts.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping mechanism for processing high-precision thin-walled cylindrical parts, comprising a machine tool worktable, a base fixed at the center of the machine tool worktable surface, a limiting boss formed in the middle of the base, and an outer surface of the base formed on the outer periphery, wherein a cylindrical part is placed on the base, the limiting boss is fitted in the inner hole of the inner surface of the cylindrical part, and the inner surface of the cylindrical part is located on the outer surface of the base; two pads are symmetrically arranged on both sides of the base, and a support ring is placed on the two pads, the inner end face of the support ring is clearance-fitted with the outer surface of the cylindrical part; the support ring and the pads on both sides are respectively clamped and fixed by a clamping auxiliary mechanism; the contact area between the bottom outer periphery of the cylindrical part and the outer surface of the base is fixed by coating with adhesive, and the top outer periphery of the cylindrical part and the inner end face of the support ring are fixed by filling with rubber putty.
[0006] As a preferred embodiment, the clamping auxiliary mechanism includes a support column, a pressure plate, and a locking screw symmetrically placed on the outer periphery of the machine tool worktable. The pressure plate has a strip-shaped hole in the middle, and the locking screw passes through the strip-shaped hole. The lower end of the locking screw is screwed into a preset threaded hole on the surface of the machine tool worktable, and its upper end is locked by a nut. One end of the pressure plate presses the support ring onto the pad, and the other end presses it onto the support column.
[0007] As a preferred embodiment, the base has a base through hole at its center, and the machine tool worktable has a corresponding fixing threaded hole. A set screw is screwed between the base through hole and the fixing threaded hole to fix the base.
[0008] As a preferred embodiment, the diameter of the inner end face of the support ring is 10-20 mm larger than the diameter of the outer surface of the part, and the width of the support ring is 50-100 mm.
[0009] As a preferred embodiment, the thickness of the support ring is the same as the depth dimension of the machined surface of the cylindrical part.
[0010] As a preferred embodiment, the support ring is a circular ring.
[0011] As a preferred embodiment, the upper end of the cylindrical part is flush with the surface of the support ring.
[0012] As a preferred embodiment, the wall thickness of the cylindrical part is 2.75 mm.
[0013] As a preferred embodiment, the gap between the outer surface of the part and the inner end face of the support ring is 10mm.
[0014] As a preferred embodiment, the adhesive is a two-component curable adhesive or an ethyl α-cyanoacrylate adhesive.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] This clamping mechanism employs an adhesive fastening method, replacing traditional clamping with bonding to effectively solve clamping and springback deformation problems. Furthermore, it utilizes rubber putty for auxiliary support at the machining area of the part, enhancing its rigidity and effectively eliminating vibration. This invention effectively ensures the machining accuracy and surface quality of thin-walled parts, overcoming deformation problems caused by traditional radial clamping and axial clamping methods, as well as issues such as vibration marks caused by cutting forces and the rigidity of the machining system. Attached Figure Description
[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0018] Figure 1 This diagram shows the structure of the machined part according to the present invention.
[0019] Figure 2 This is a schematic diagram showing the structure of the base of this utility model.
[0020] Figure 3 This is a schematic diagram showing the structure of the support ring of this utility model.
[0021] Figure 4 This is a schematic diagram showing the clamping structure of this utility model.
[0022] Among them, 1. Machine tool worktable; 2. Base; 21. Base through hole; 22. Base outer surface; 23. Limiting boss; 3. Support ring; 31. Support ring inner end face; 32. Support ring outer end face; 4. Pad; 5. Cylindrical part; 51. Part outer surface; 52. Part inner surface; 6. Pressure plate; 61. Strip hole; 7. Support column; 8. Locking screw; 9. Nut; 10. Rubber putty; 11. Adhesive; A- Part machining area. Detailed Implementation
[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model. Example
[0024] like Figure 1 The part to be processed shown has a thin-walled and weakly rigid shell. When the inner hole is precision machined, due to its poor rigidity and weak strength, it vibrates severely during the machining process, and the surface quality cannot be guaranteed. After the part is removed from the machine, it is prone to springback deformation due to the clamping force, and the dimensional tolerance cannot be guaranteed.
[0025] like Figure 1-4As shown, to solve the above problems, this utility model provides a clamping mechanism for machining high-precision thin-walled cylindrical parts, including a machine tool worktable 1. A base 2 is fixed at the center of the surface of the machine tool worktable 1. A limiting boss 23 is formed in the middle of the base 2, and an outer surface 22 is formed on the outer periphery of the base. A cylindrical part 5 is placed on the base 2. The limiting boss 23 is located in the inner hole of the inner surface 52 of the cylindrical part 5. The inner surface 52 of the cylindrical part 5 is located on the outer surface 22 of the base 2. The base 2 is symmetrical on both sides. Two pads 4 are provided, and a support ring 3 is placed on the two pads 4. The inner end face 31 of the support ring 3 is in clearance fit with the outer surface 51 of the cylindrical part 5. The support ring 3 and the pads 4 on both sides are pressed and fixed by clamping auxiliary mechanisms. The contact area between the bottom outer periphery of the outer surface 51 of the cylindrical part 5 and the outer surface 22 of the base is fixed by applying adhesive 11. The top outer periphery of the outer surface 51 of the cylindrical part 5 and the inner end face 31 of the support ring 3 are fixed by filling with rubber putty 10.
[0026] like Figure 4 As shown, the clamping auxiliary mechanism includes support columns 7, pressure plates 6, and locking screws 8 symmetrically positioned around the outer periphery of the machine tool worktable 1. The pressure plate 6 has a slotted hole 61 in its center, through which the locking screw 8 passes. The lower end of the locking screw 8 is screwed into a pre-threaded hole on the surface of the machine tool worktable 1, and its upper end is locked by a nut 9. One end of the pressure plate 6 presses the support ring 3 against the pad 4, and the other end presses it against the support column 7. The two pads 4 are placed on the surface of the machine tool worktable 1 and pressed together by the pressure plate 6. Similarly, the support column 7 is also placed on the surface of the machine tool worktable 1 and pressed together by the pressure plate 6. The pressure plate 6 secures the pads 4 and the support column 7, meeting the actual working requirements.
[0027] like Figure 2 As shown, the base 2 has a base through hole 21 in the center, and the machine tool worktable 1 has a corresponding fixing thread hole. A set screw is screwed between the base through hole 21 and the fixing thread hole to achieve fixation.
[0028] like Figure 3 As shown, the support ring 3 is a circular ring with a width of 50-100mm and a thickness that is the same as the depth of the machined surface of the cylindrical part 5; the diameter of the inner end face 31 of the support ring is 10-20mm larger than the diameter of the outer surface 51 of the part.
[0029] like Figure 1 As shown, the wall thickness of the cylindrical part 5 is 2.75 mm, and its upper end is flush with the surface of the support ring 3.
[0030] Preferably, the gap between the outer surface 51 of the part and the inner end face 31 of the support ring is 10mm.
[0031] Preferably, the adhesive 11 is a two-component curable adhesive or an ethyl α-cyanoacrylate adhesive. Example
[0032] like Figure 1-4 As shown, the usage process of the above-mentioned clamping mechanism for machining high-precision thin-walled parts is as follows:
[0033] 1. Installation and fixing of the clamping mechanism
[0034] Pass the set screw through the through hole 21 of the base and screw it into the corresponding fixed threaded hole on the machine tool worktable 1; two pads 4 are symmetrically arranged on both sides of the base 2, and the support ring 3 is placed on the pads 4 to ensure that the inner end face 31 of the support ring is concentric with the outer surface 22 of the base.
[0035] 2. Fixing auxiliary mechanism
[0036] The locking screw 8 is passed through the strip hole 61 on the pressure plate 6, and the lower end is screwed into the preset threaded hole on the surface of the machine tool worktable 1. The upper end is locked by the nut 9, so that one end of the pressure plate 6 presses the support ring 3 onto the pad block 4, and the other end presses the support column 7 onto the machine tool worktable 1.
[0037] 3. Assembly and adhesive fastening of parts
[0038] The cylindrical part 5 is placed on the limiting boss 23 of the base 2 that mates with it, ensuring that its upper end is flush with the surface of the support ring 3 and that the gap between the outer surface 51 of the part and the inner end face 31 of the support ring is 10mm. Adhesive 11 is applied to the contact area between the outer periphery of the bottom end of the outer surface 51 of the cylindrical part 5 and the outer surface 22 of the base. Rubber putty 10 is filled between the outer periphery of the top end of the outer surface 51 of the cylindrical part 5 and the inner end face 31 of the support ring 3 for bonding and fastening.
[0039] 4. Parts machining
[0040] Once everything is ready, begin machining the cylindrical part 5. After machining, remove the rubber clay 10 and adhesive 11, and disassemble the cylindrical part 5 to complete the machining process.
[0041] Subsequent processing only requires repeating steps 3-4.
[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 clamping mechanism for machining high-precision thin-walled cylindrical parts, comprising a machine tool table (1), characterized in that, A base (2) is fixed at the center of the surface of the machine tool worktable (1). A limiting boss (23) is formed in the middle of the base (2), and an outer surface (22) is formed on the outer periphery. A cylindrical part (5) is placed on the base (2). The limiting boss (23) is located in the inner hole of the inner surface (52) of the cylindrical part (5). The inner surface (52) of the cylindrical part (5) is located on the outer surface (22) of the base (2). Two pads (4) are symmetrically arranged on both sides of the base (2). Support rings are placed on the two pads (4). (3) The inner end face (31) of the support ring (3) is clearance-fitted with the outer surface (51) of the cylindrical part (5); the support ring (3) and the pads (4) on both sides are pressed and fixed by the clamping auxiliary mechanism; the contact area between the bottom outer periphery of the outer surface (51) of the cylindrical part (5) and the outer surface (22) of the base is fixed by coating with adhesive (11); the top outer periphery of the outer surface (51) of the cylindrical part (5) and the inner end face (31) of the support ring (3) are fixed by filling with rubber clay (10).
2. The clamping mechanism for machining high-precision thin-walled cylindrical parts according to claim 1, characterized in that, The clamping auxiliary mechanism includes a support column (7), a pressure plate (6), and a locking screw (8) symmetrically placed on the outer periphery of the machine tool worktable (1). The pressure plate (6) has a strip hole (61) in the middle. The locking screw (8) passes through the strip hole (61). The lower end of the locking screw (8) is screwed into a preset threaded hole on the surface of the machine tool worktable (1), and its upper end is locked by a nut (9). One end of the pressure plate (6) presses the support ring (3) onto the pad (4), and the other end presses it onto the support column (7).
3. The clamping mechanism for machining high-precision thin-walled cylindrical parts according to claim 1, characterized in that, The base (2) has a base through hole (21) at its center, and the machine tool worktable (1) has a corresponding fixing thread hole. A set screw is screwed between the base through hole (21) and the fixing thread hole to fix the base (2).
4. The clamping mechanism for machining high-precision thin-walled cylindrical parts according to claim 1, characterized in that, The diameter of the inner end face (31) of the support ring is 10-20 mm larger than the diameter of the outer surface (51) of the part, and the width of the support ring (3) is 50-100 mm.
5. The clamping mechanism for machining high-precision thin-walled cylindrical parts according to claim 1, characterized in that, The thickness of the support ring (3) is the same as the depth dimension of the machined surface of the cylindrical part (5).
6. The clamping mechanism for machining high-precision thin-walled cylindrical parts according to claim 1, characterized in that, The support ring (3) is a circular ring.
7. The clamping mechanism for machining high-precision thin-walled cylindrical parts according to claim 1, characterized in that, The upper end of the cylindrical part (5) is flush with the surface of the support ring (3).
8. The clamping mechanism for machining high-precision thin-walled cylindrical parts according to claim 1, characterized in that, The wall thickness of the cylindrical part (5) is 2.75 mm.
9. The clamping mechanism for machining high-precision thin-walled cylindrical parts according to claim 1, characterized in that, The gap between the outer surface (51) of the part and the inner end face (31) of the support ring is 10mm.
10. The clamping mechanism for machining high-precision thin-walled cylindrical parts according to claim 1, characterized in that, The adhesive (11) is a two-component mixed curing adhesive or ethyl α-cyanoacrylate adhesive.