Muffler punching anti-burr bidirectional punching cutter structure
By designing a two-way punching tool structure with a muffler and anti-burr, the problem of needing to replace the entire tool when it wears out has been solved. This allows for the individual replacement of the stepped punch, improving the tool's efficiency and lifespan.
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUZHOU HENGZHUO AUTO PARTS
- Filing Date
- 2025-06-17
- Publication Date
- 2026-05-15
AI Technical Summary
Existing muffler drilling tools need to be replaced entirely when the working section wears out, resulting in the waste of functional non-working section materials and failing to fully utilize the tool's life cycle value.
A bidirectional punching tool structure for muffler drilling and anti-burr design was designed, including a disassembly and assembly mechanism and an auxiliary mechanism. It allows the stepped punch to be replaced individually when worn, and achieves quick disassembly and installation through the cooperation of slide bar, locking block, limit spring and swivel ring.
It improves the efficiency of tool use and replacement, reduces material consumption, and extends the service life of tools.
Smart Images

Figure CN224238036U_ABST