Clamp for turning inner cavity of thin-walled workpiece
By designing a vehicle cavity fixture for thin-walled parts, using a combined structure of the swell and jaws, the problem of stress deformation of thin-walled parts during processing is solved, and the processing quality is improved.
Patent Information
- Application Number
- CN202421566829.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-04
AI Technical Summary
When the existing thin-walled parts of the vehicle cavity clamp is processed by the thin-walled parts of the circular cavity, the thin-walled wall leads to deformation under stress, and trembling patterns occur in the processing part, causing defects in the thin-walled parts and affecting product quality.
A thin-walled car interior cavity fixture is designed, and the expansion sleeve is used to slide front and back through the internal hole cone for tightening and fixing, and through the cooperation of the counterweight block and the jaw, the workpiece is prevented from being subjected to stress during turning.
It effectively avoids the stress deformation of thin-walled parts when turning the inner cavity, reduces the trembling phenomenon in the processing part, and improves the processing quality of thin-walled parts.
Smart Images
Figure CN222843629U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of clamp equipment, in particular to a clamp for the inner cavity of a thin-walled part. Background Art
[0002] During the machining process of thin-walled parts, they need to be clamped and fixed. In the prior art, the clamping plate is driven by a cylinder to achieve the compaction and fixation of thin-walled parts. However, the existing thin-walled parts turning inner cavity clamp only fixes thin-walled parts with circular inner cavities through internal support. Due to the thin inner cavity wall, the inner cavity is deformed by force during turning, and chatter marks are generated in the processed parts, resulting in defects in thin-walled parts and affecting product quality. Utility Model Content
[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model proposes a thin-walled part inner cavity turning fixture, which solves the problem that the thin-walled part with a circular inner cavity is only fixed by internal support. Due to the thin wall of the inner cavity, the inner cavity is deformed by force during turning, and chatter marks are generated in the processed part, causing defects in the thin-walled part and affecting product quality.
[0004] The technical solution adopted by the utility model is as follows: The utility model proposes a thin-walled parts lathe inner cavity clamp, including a connecting plate, a main body, a pull rod, a spacer sleeve, an expansion sleeve, a positioning plate, a swing arm, a connecting block, a claw, a latch, a counterweight block and a tension spring. The connecting plate connects the main body to the machine tool, the pull rod is slidably arranged in the main body back and forth and the front end is fixed on the oil cylinder, the spacer sleeve is arranged between the pull rod and the main body and the spacer sleeve is slidably arranged on the main body, the expansion sleeve and the spacer sleeve are sealingly connected, the positioning plate is connected to the main body by screws, the connecting block is connected to the positioning plate by screws, the latch passes through the connecting block and is rotatably arranged, the swing arm is connected to the connecting block using a latch, the claw is connected to the swing arm by a latch, the counterweight block is fixed at the front end of the swing arm, one end of the tension spring is fixed on the swing arm and the other end is fixed on the positioning plate.
[0005] Preferably, a conical hole portion and a straight hole portion are provided in the expansion sleeve and are connected to the main body.
[0006] In order to achieve a better tightening effect, the expansion sleeve slides back and forth through the internal hole cone to tighten and fix the inner cavity wall.
[0007] In order to achieve the purpose of protecting the outer wall more quickly, the claws are arranged in three groups at a 120-degree angle.
[0008] Furthermore, the claws are arranged in an arc shape.
[0009] In order to achieve the effect of returning to the original position, the tension spring is arranged between the positioning plate and the swing arm, and the claw on the swing arm is pulled to reset.
[0010] The beneficial effects achieved by the utility model using the above structure are as follows: the present invention proposes a thin-walled component inner cavity clamp, in which the expansion sleeve tightens and fixes the thin-walled component, and when rotating, the counterweight moves centrifugally outward, thereby pulling the swing arm to push the clamping claw to squeeze and wrap the thin-walled component. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the overall structure of a thin-walled part inner cavity clamp proposed by the utility model;
[0012] Figure 2 The utility model is a schematic diagram of the swing arm structure of a thin-walled component inner cavity clamp.
[0013] Among them, 1. receiving plate, 2. main body, 3. pull rod, 4. spacer, 5. expansion sleeve, 6. positioning plate, 7. swing arm, 8. connecting block, 9. claw, 10. pin, 11. counterweight block, 12. tension spring.
[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0016] like Figure 1 and Figure 2 As shown, the utility model proposes a thin-walled parts lathe inner cavity clamp, including a receiving plate 1, a main body 2, a pull rod 3, a spacer sleeve 4, an expansion sleeve 5, a positioning plate 6, a swing arm 7, a connecting block 8, a claw 9, a latch 10, a counterweight 11 and a tension spring 12. The receiving plate 1 connects the main body 2 with the machine tool, the pull rod 3 is slidably arranged in the main body 2 and the front end is fixed on the oil cylinder, the spacer sleeve 4 is arranged between the pull rod 3 and the main body 2 and the spacer sleeve 4 is slidably arranged on the main body 2, the expansion sleeve 5 and the spacer sleeve 4 are sealed and connected, the positioning plate 6 is connected to the main body 2 by screws, the connecting block 8 is connected to the positioning plate 6 by screws, the latch 10 passes through the connecting block 8 and is rotatably arranged, the swing arm 7 is connected to the connecting block 8 by using the latch 10, the claw 9 is connected to the swing arm 7 by the latch 10, the counterweight 11 is fixed to the front end of the swing arm 7, and one end of the tension spring 12 is fixed on the swing arm 7 and the other end is fixed on the positioning plate 6.
[0017] like Figure 1 As shown, a conical hole portion and a straight hole portion are arranged in the expansion sleeve 5 and connected to the main body 2 .
[0018] like Figure 1 As shown, the expansion sleeve 5 slides back and forth through the internal hole cone to tighten and fix the inner cavity wall.
[0019] like Figure 2 As shown, the claws 9 are arranged in three groups at an angle of one hundred and twenty degrees.
[0020] like Figure 2 As shown, the claw 9 is arranged in an arc shape.
[0021] like Figure 1 and Figure 2 As shown, the tension spring 12 is arranged between the positioning plate 6 and the swing arm 7, and pulls the claw 9 on the swing arm 7 to reset.
[0022] In specific implementation, the expansion sleeve 5 tightens the workpiece. During the rotation of the machine tool spindle, the counterweight block 11 is thrown outward under the action of centrifugal force, driving the clamping claw 9 to wrap the workpiece, so as to avoid the workpiece being deformed due to the thin wall thickness during turning, and chatter marks on the processed part.
[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
[0025] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A thin-walled part inner cavity clamp, characterized in that: It includes a connecting plate, a main body, a pull rod, a spacer sleeve, an expansion sleeve, a positioning plate, a swing arm, a connecting block, a claw, a latch, a counterweight and a tension spring. The connecting plate connects the main body to the machine tool. The pull rod is slidably arranged in the main body forward and backward and the front end is fixed on the cylinder. The spacer sleeve is arranged between the pull rod and the main body and the spacer sleeve is slidably arranged on the main body. The expansion sleeve and the spacer sleeve are sealingly connected. The positioning plate is connected to the main body by screws. The connecting block is connected to the positioning plate by screws. The latch passes through the connecting block and is rotatably arranged. The swing arm is connected to the connecting block by a latch. The claw is connected to the swing arm by a latch. The counterweight is fixed to the front end of the swing arm. One end of the tension spring is fixed on the swing arm and the other end is fixed on the positioning plate.
2. A thin-walled part inner cavity clamp according to claim 1, characterized in that: The expansion sleeve is provided with a conical hole portion and a straight hole portion which are connected to the body.
3. A thin-walled part inner cavity clamp according to claim 2, characterized in that: The expansion sleeve slides back and forth through the internal hole cone to tighten and fix the inner cavity wall.
4. A thin-walled part inner cavity clamp according to claim 3, characterized in that: The clamping claws are arranged in three groups at an angle of one hundred and twenty degrees.
5. A thin-walled part inner cavity clamp according to claim 4, characterized in that: The clamping claw is arranged in an arc shape.
6. A thin-walled part inner cavity clamp according to claim 5, characterized in that: The tension spring is arranged between the positioning plate and the swing arm, and pulls the clamping claw on the swing arm to reset.