一种夹具及车削加工治具
By designing the adjusting screw and clamping block structure of the fixture, the problem of unstable clamping of the bicycle head tube during machining was solved, achieving stable clamping and high-precision turning, and enhancing the versatility and positioning accuracy of the fixture.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GIANT BICYCLES
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-17
AI Technical Summary
In the prior art, when machining the head tube of a bicycle, the clamping surface of the movable jaw is horizontal, which cannot fully fit with the tapered tubular workpiece, resulting in unstable clamping. The workpiece is prone to shifting during machining, affecting the turning accuracy.
A clamping fixture was designed, including a body, a clamping block, an adjusting screw, and an adjusting hole. By cooperating with the adjusting screw, the position of the clamping block in the adjusting groove can be adjusted in real time to clamp workpieces with different tapers or diameters. Combined with the guide and the annular positioning reference surface, the clamping stability and accuracy are ensured.
It achieves stable clamping of workpieces with different tapers or diameters, avoids workpiece movement, improves turning accuracy, and enhances the versatility and positioning accuracy of the fixture.
Smart Images
Figure CN224509035U_ABST
Abstract
Claims
1. A clamp characterized in that, include: The body (1) has a cavity (11) for fitting at least a portion of the workpiece (9) to be processed. The cavity (11) extends along the axial direction of the body (1). An adjustment groove (12) is provided on the inner wall of the cavity (11). The adjustment groove (12) extends along the axial direction of the cavity (11) and has an opening communicating with the cavity (11). A clamping block (2) is provided in the adjusting groove (12), and the clamping block (2) and the adjusting groove (12) are in clearance fit. The clamping block (2) and the inner wall of the cavity (11) are used to clamp the workpiece (9) to be processed. Adjusting screw (3) and adjusting hole (4), the adjusting hole (4) is provided in the body (1), the adjusting hole (4) is connected to the adjusting groove (12), the adjusting screw (3) is arranged radially along the cavity (11), the adjusting screw (3) is screwed into the adjusting hole (4), and the adjusting screw (3) abuts against the clamping block (2).
2. The clamp of claim 1, wherein The clamp includes two adjusting screws (3) and two adjusting holes (4). The two adjusting holes (4) are spaced apart at both ends of the body (1) along the axial direction. The two adjusting screws (3) are screwed into the two adjusting holes (4) in a one-to-one correspondence, and both adjusting screws (3) abut against the clamping block (2).
3. The clamp of claim 2, wherein The clamp also includes a guide (5), the extension direction of which is parallel to the length direction of the adjusting screw (3), one end of which is connected to the clamping block (2), and the guide (5) is slidably connected to the bottom wall of the adjusting groove (12) along the length direction of the guide (5).
4. The clamp of claim 3, wherein The clamp includes two guide members (5), which are arranged in parallel and spaced between the two adjusting screws (3). One end of each guide member (5) is connected to the clamping block (2), and along the length of the guide member (5), both guide members (5) are slidably connected to the bottom wall of the adjusting groove (12).
5. The clamp of claim 4, wherein Both guide members (5) are guide screws. The clamping block (2) is provided with two guide holes (7). The bottom wall of the adjusting groove (12) is provided with multiple through holes (6). The two guide holes (7) are selectively aligned with two of the multiple through holes (6). The two guide screws pass through the two through holes (6) aligned with the guide holes (7) one by one and are screwed into the corresponding two guide holes (7).
6. The clamp of claim 1, wherein A ring-shaped positioning reference surface (8) is fixedly connected to the inner wall of the cavity (11) in the circumferential direction. The positioning reference surface (8) is perpendicular to the axis of the cavity (11). The workpiece (9) to be processed can abut against the positioning reference surface (8). The cavity (11) has an insertion end and a reference end. The insertion end is used for the workpiece (9) to be processed to be inserted into the cavity (11). The end face of the reference end is flush with the positioning reference surface (8).
7. The clamp of claim 1, wherein The gap between the pressing block (2) and the groove wall of the adjusting groove (12) is 0.4mm-1.5mm.
8. The clamp of claim 1, wherein The adjusting groove (12) is a dovetail groove.
9. The clamp of any one of claims 1-8, wherein, The pressing block (2) is made of metal material.
10. A turning jig for machining a tapered pipe, characterized by, The turning tooling jig comprises a chuck and the clamp of any one of claims 1-9, and the clamp is clamped to the chuck.