一种适用于小齿轮车加工的偏心定位工装
By designing an eccentric positioning fixture suitable for machining small gears, and adopting an eccentric positioning hole, a relief groove, and a spring plate structure, the problem of the difficulty in machining eccentric gears on existing CNC lathes has been solved, and the stability and appearance have been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHU ZHAOHENGZHONGLI PRECISION MASCH CO LTD
- Filing Date
- 2025-04-02
- Publication Date
- 2026-07-17
AI Technical Summary
Existing CNC lathes have difficulty directly machining gear products with eccentric or inverted structures, resulting in high machining difficulty, unstable dimensions, and difficulty in guaranteeing appearance.
Design an eccentric positioning fixture suitable for machining small gears. It adopts an eccentric positioning hole, a relief groove and a spring plate structure, combined with fastening bolts and positioning teeth to ensure stability and accurate positioning during the machining process.
The use of eccentric positioning fixtures significantly improves the stability and quality of pinion machining, reduces machining difficulty, and ensures dimensional stability and aesthetic appearance.
Smart Images
Figure CN224508616U_ABST
Abstract
Claims
1. An eccentric positioning tooling suitable for pinion machining, characterized by, The eccentric positioning fixture body is cylindrical in shape. A circular groove is provided on the top of the eccentric positioning fixture body. An eccentric positioning hole is set at the bottom of the groove according to the process requirements of the gear being processed. A clearance groove is also provided on the bottom of the groove. One end of the clearance groove is connected to the eccentric positioning hole. The groove body and the eccentric positioning hole together form a spring plate. Fastening bolt holes are provided on the outer side of the eccentric positioning fixture body. The center line of the fastening bolt holes is aligned with the spring plate. A protrusion is provided on the groove wall facing directly above the eccentric positioning hole. The center line of the protrusion is coplanar with the center line of the eccentric positioning hole. The top of the protrusion is provided with positioning teeth that match the size of the corresponding eccentric gear.
2. The eccentric positioning tool suitable for machining pinion gear according to claim 1, characterized in that, The clearance groove is L-shaped in general, including a short groove section and a long groove section. The top of the short groove section is connected to the eccentric positioning hole. One side surface of the spring plate is the inner groove wall of the long groove section. The center line of the fastening bolt hole is perpendicular to the inner groove wall of the long groove section.
3. The eccentric positioning tool suitable for machining pinion gear according to claim 2, characterized in that, The tail end of the long groove section of the avoidance groove is provided with a wire cut hole in the direction of the eccentric positioning hole.
4. The eccentric positioning tool suitable for machining pinion gear according to claim 1, characterized in that, The outer side of the eccentric positioning fixture body is provided with a positioning mounting surface, and the fastening bolt hole is a countersunk hole, which is located on the edge of the positioning mounting surface.
5. The eccentric positioning tool suitable for machining pinion gear according to claim 1, wherein, The top of the protrusion has at least two positioning teeth.
6. The eccentric positioning tool suitable for machining pinion gear of claim 1, wherein, The eccentric positioning hole has friction texture on its hole wall.