一种用于螺纹加工的工装夹具及车床
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI AIRCRAFT MFG
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-17
AI Technical Summary
In traditional thread cutting, the die specifications are fixed, leading to frequent sleeve replacements, poor versatility, increased equipment adjustment time and operational complexity, and reduced production efficiency.
Design a tooling fixture including multiple dies with different outer diameters and reducing sleeves. Through the four-stage reducing through holes of the reducing sleeves and the corresponding threaded holes of the dies, the quick replacement of threads of different specifications can be achieved, reducing the number of sleeve replacements.
It improves the versatility and production efficiency of the equipment, reduces equipment adjustment time and operational complexity, saves time and manpower, and adapts to the needs of mass production.
Smart Images
Figure CN224508631U_ABST
Abstract
Claims
1. A tool holder for thread machining, characterized in that, include: Multiple dies (1) with different outer diameters, and each die (1) has multiple threaded holes on its outer peripheral wall, which are distributed circumferentially along the die (1). A variable diameter sleeve (2) has a four-stage variable diameter through hole on its inner wall, which is arranged in sequence as a first diameter segment, a second diameter segment, a third diameter segment and a fourth diameter segment. The diameter of each diameter segment gradually decreases from the first diameter segment to the fourth diameter segment, and adjacent diameter segments are smoothly connected by a transition slope. The outer peripheral wall of the variable diameter sleeve (2) has a plurality of first strip holes extending along its own axis, and the plurality of first strip holes correspond one-to-one with the plurality of threaded holes. The die sleeve (3) has a plurality of second strip holes on its outer peripheral wall. The plurality of second strip holes correspond one-to-one with the plurality of first strip holes, and the extension direction of each second strip hole is consistent with the extension direction of the corresponding first strip hole. One of the plurality of dies (1) can be selectively inserted into one of the first diameter segment, the second diameter segment, the third diameter segment and the fourth diameter segment, and the first fastener (4) can be threaded into the threaded hole of the die (1) after passing through the second strip hole and the first strip hole in sequence.
2. The tool holder according to claim 1, wherein The die sleeve (3) includes a fixing part (31) and a connecting part (32) installed in the fixing part (31). The variable diameter sleeve (2) is inserted into the fixing part (31). The connecting part (32) is used to connect with the tailstock tool holder (5) of the lathe. The outer peripheral wall of the fixing part (31) is provided with a plurality of second strip holes.
3. The tool holder according to claim 1, wherein Each of the dies (1) is provided with a thread rolling hole, and the sidewall of the thread rolling hole is provided with multiple chip removal grooves.
4. The tool holder according to claim 1, wherein Each of the aforementioned teeth (1) has anti-slip textures on its outer peripheral wall.
5. The tool holder according to claim 1, wherein The outer circumferential surface of the variable diameter sleeve (2) is provided with anti-slip texture.
6. A tool holder for thread machining according to any one of claims 1-5, characterized in that The inner surface of the variable diameter sleeve (2) is provided with a first wear-resistant layer, the wear rate of the first wear-resistant layer is less than the wear rate of the variable diameter sleeve (2), and the first wear-resistant layer forms at least the surface that contacts the die (1). And / or, the outer surface of the variable diameter sleeve (2) is provided with a second wear-resistant layer, the wear rate of the second wear-resistant layer is less than the wear rate of the variable diameter sleeve (2), and the second wear-resistant layer forms at least the surface that contacts the die sleeve (3).
7. A tool holder for thread machining according to claim 6, characterized in that The variable diameter sleeve (2) is made of alloy steel.
8. The tool holder according to claim 6, wherein The outer surface of the variable diameter sleeve (2) is marked with axial scale.
9. A lathe characterised in that, The tool holder includes a lathe tailstock tool holder (5) and a tooling fixture for thread machining as described in any one of claims 1-8, wherein the lathe tailstock tool holder (5) is slidably connected to the die sleeve (3).
10. The lathe of claim 9, wherein, The die sleeve (3) includes a fixing part (31) and a connecting part (32) installed on the fixing part (31). The connecting part (32) is provided with a third strip hole. The lathe tailstock tool holder (5) is provided with a threaded hole. The lathe tailstock tool holder (5) passes through the connecting part (32). The second fastener (6) can pass through the third strip hole and be threadedly connected to the threaded hole on the lathe tailstock tool holder (5); or, the lathe tailstock tool holder (5) is provided with a third strip hole. The connecting part (32) is provided with a threaded hole. The connecting part (32) passes through the lathe tailstock tool holder (5). The second fastener (6) can pass through the third strip hole and be threadedly connected to the threaded hole on the connecting part (32).