Self-centering clamping tool for thin-wall part
The design of the self-centering clamping fixture solves the problems of deformation and vibration caused by poor rigidity and uneven clamping force in the processing of thin-walled parts, achieving high-precision and stable processing results, and is suitable for clamping thin-walled parts.
Patent Information
- Application Number
- CN202422826985.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-11-20
AI Technical Summary
Thin-walled parts are prone to deformation and vibration during processing due to poor rigidity and uneven clamping force, which affects dimensional and positional accuracy. Traditional clamping fixtures lack sufficient rigidity and positioning accuracy.
Design a self-centering clamping fixture, including a base and a clamping ring. The workpiece is uniformly clamped by the threaded connection of the clamping ring and the extrusion of the frustum surface, which enhances rigidity and reduces deformation. The fixture adopts a surface contact clamping method.
It improves the processing stability and accuracy of thin-walled parts, reduces deformation and vibration, simplifies the mounting and unmounting process, and is suitable for mass production.
Smart Images
Figure CN223629914U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of self-centering chucking tool for thin-walled part, belong to thin-walled part clamping technical field. BACKGROUND
[0002] Due to thin-walled parts, the rigidity of cutting system composed of workpiece, tool and fixture is poor, and the workpiece is easily deformed under the action of clamping force. In addition, under the action of radial cutting force and back force in cutting process, the workpiece is prone to vibration and deformation, affecting the dimensional accuracy and geometric accuracy of the workpiece.
[0003] When clamping thin-walled parts, clamping force needs to be evenly distributed, and clamping contact surface needs to be increased to avoid deformation caused by excessive local stress. At the same time, the rigidity and positioning accuracy of the clamping tool directly affect the stability and accuracy of part machining. Reasonable clamping scheme can reduce the clamping and unloading time and improve production efficiency. UTILITY MODEL CONTENT
[0004] The utility model aims at solving the problem that traditional tooling is prone to cause deformation of workpiece due to excessive local stress when machining thin-walled parts, and the rigidity and positioning accuracy of the clamping tool are poor. Therefore, a self-centering chucking tool for thin-walled parts is provided.
[0005] The utility model aims to achieve the following technical solutions:
[0006] The utility model relates to a kind of self-centering chucking tool for thin-walled part, including base and clamping ring;The base is disc-shaped structure;The upper end surface center of the base is provided with cylindrical clamping blind hole, and the outer circle of the cylindrical clamping blind hole of the upper end surface of the base is provided with circular mounting groove, so that the annular clamping part is formed between the cylindrical clamping blind hole and the circular mounting groove;The outer ring side surface of the circular mounting groove is machined with connecting thread, and the inner ring side surface of the circular mounting groove is machined into a circular truncated cone surface converging upward, and a group of circumferentially distributed shrinkage notches are formed on the annular clamping part.
[0007] The outer ring side wall of the clamping ring is machined with connecting thread matched with the outer ring side surface of the circular mounting groove of the base, and the inner ring side wall of the clamping ring is machined into a circular truncated cone surface matched with the inner ring side surface of the circular mounting groove of the base.
[0008] The clamping ring is screwed into the circular mounting groove of the base, and the clamping ring radially extrudes the inner ring side surface of the circular mounting groove of the base through the circular truncated cone surface of the inner ring side wall, so that the annular clamping part of the base clamps the internal workpiece.
[0009] Further, to improve the clamping effect of the annular clamping part, the depth of the cylindrical clamping blind hole is less than the depth of the circular mounting groove.
[0010] Further, for the convenience of the installation of the clamping ring, the upper end face of the clamping ring is processed with a wrench hole.
[0011] Working process
[0012] When clamping the thin-walled workpiece, first, the thin-walled workpiece is inserted into the cylindrical clamping blind hole of the base, so that the bottom of the thin-walled workpiece tightly abuts against the inner bottom of the cylindrical clamping blind hole of the base, and then the clamping ring is threadedly connected in the annular mounting groove of the base, and in the process of threadedly rotating the clamping ring downward, the clamping ring radially extrudes the inner ring side surface of the annular mounting groove of the base through the circular truncated cone surface of the inner ring side wall, so that the annular clamping portion of the base clamps the thin-walled workpiece.
[0013] When disassembling the thin-walled workpiece, the clamping ring is reversely rotated, so that the thin-walled workpiece can be taken out from the cylindrical clamping blind hole of the base.
[0014] Beneficial effects
[0015] The clamping tool has the advantages that the internal structure is closely matched, the overall rigidity is good, the device is in surface contact with the workpiece during clamping, deformation and vibration during machining are greatly reduced, the tool can realize self-centering, the clamping and unloading of the workpiece can be realized only by rotating the clamping ring in and out, operation is convenient, and the tool is suitable for mass production and machining of thin-walled parts. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a sectional view of the self-centering clamping tool of the utility model;
[0017] Figure 2 It is a perspective view of the self-centering clamping tool of the utility model;
[0018] In the figure, 1 is a wedge-shaped ring, and 2 is a base. DETAILED DESCRIPTION
[0019] The content of the utility model will be further described below in combination with the drawings and examples.
[0020] Examples
[0021] For example, Figure 1 , 2As shown, the utility model discloses a kind of self-centering chucking tool for thin-walled part, including base 2 and clamping ring 1;The base 2 is disc structure;The upper end surface center of the base 2 is provided with cylindrical clamping blind hole, the outer circle of the cylindrical clamping blind hole of the upper end surface of the base 2 is provided with circular mounting groove, so that annular clamping portion is formed between the cylindrical clamping blind hole and the circular mounting groove;The outer ring side of the circular mounting groove is machined with connecting thread, the inner ring side of the circular mounting groove is machined as the circular table face converging upwards, a group of circumferentially distributed shrinkage notches are opened on the annular clamping portion;
[0022] The outer ring side wall of the clamping ring 1 is machined with the connecting thread matched with the outer ring side of the circular mounting groove of the base 2, and the inner ring side wall of the clamping ring 1 is machined as the circular table face matched with the inner ring side of the circular mounting groove of the base 2;
[0023] The clamping ring 1 is threadedly connected in the circular mounting groove of the base 2, and the inner ring side wall of the clamping ring 1 radially extrudes the inner ring side of the circular mounting groove of the base 2, so that the annular clamping portion of the base 2 clamps the internal workpiece.
[0024] Further, to improve the clamping effect of the annular clamping portion, the depth of the cylindrical clamping blind hole is less than the depth of the circular mounting groove.
[0025] Further, to facilitate the installation of the clamping ring 1, a wrench hole is machined on the upper end surface of the clamping ring 1.
[0026] Working process
[0027] When clamping the thin-walled workpiece, first insert the thin-walled workpiece into the cylindrical clamping blind hole of the base 2, so that the bottom of the thin-walled workpiece tightly tops the inner bottom of the cylindrical clamping blind hole of the base 2, then threadedly connect the clamping ring 1 in the circular mounting groove of the base 2, during the downward threaded rotation of the clamping ring 1, the inner ring side of the circular mounting groove of the base 2 is radially extruded inward by the circular table face of the inner ring side wall of the clamping ring 1, so that the annular clamping portion of the base 2 clamps the thin-walled workpiece.
[0028] When disassembling the thin-walled workpiece, reverse rotation of the clamping ring 1 can make the thin-walled workpiece be taken out from the cylindrical clamping blind hole of the base 2.
Claims
1. A self-centering chucking tool for thin-walled workpieces, characterized by: The utility model relates to a clamping ring and base for clamping workpiece, comprising a base and a clamping ring; the base is disc structure; the upper end surface center of base is opened the cylindrical clamping blind hole, the outer circle of cylindrical clamping blind hole of base upper end surface is opened the circular mounting groove, makes the annular clamping portion between the cylindrical clamping blind hole and the circular mounting groove; the outer ring side of circular mounting groove is processed with the connecting thread, the inner ring side of circular mounting groove is processed as the circular truncated cone that converges upward, and a group of circumferentially distributed shrinkage notches are opened on the annular clamping portion; The outer ring side wall of the clamping ring is processed with the connecting thread matched with the outer ring side of the circular mounting groove of the base, and the inner ring side wall of the clamping ring is processed as the circular truncated cone matched with the inner ring side of the circular mounting groove of the base; The clamping ring is screwed in the circular mounting groove of the base, and the clamping ring radially extrudes the inner ring side of the circular mounting groove of the base through the circular truncated cone of the inner ring side wall, so that the annular clamping portion of the base clamps the internal workpiece.
2. A self-centering chucking tool for thin-walled workpieces as set forth in claim 1, characterized in that: The depth of the cylindrical clamping blind hole is less than the depth of the circular mounting groove.
3. A self-centering chucking tool for thin-walled workpieces according to claim 1 or 2, characterized in that: The upper end surface of the clamping ring is processed with a wrench hole.