Cutter Assembly Gasket Locking Structure for Stable Road Milling
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Solution Overview
Problem
Conventional gaskets in cutter assemblies for road milling fail to be installed stably on chisel holders, limiting their buffering effect and leading to increased abrasion of the chisel holder.
Innovation Solution
A cutter assembly design featuring a gasket with specific structural features, including a cutter surface groove and annular protrusion, which enhances stability and prevents abrasion by embedding into the cutter body, and a chisel holder structure that supports the gasket's positioning and mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional gasket is installed on the chisel holder to buffer collision, then the loss rate of the cutter is reduced, but the gasket cannot be installed stably and cannot abut against the cutter stably
Solution Approach 1:
The annular protrusion on the cutter body is nested into the cutter surface groove on the gasket, creating a stable mechanical connection. This nesting structure ensures the gasket is firmly positioned on the cutter body, preventing instability during high-impact milling operations while maintaining a relatively simple overall structure.
Solution Approach 2:
The gasket serves as an intermediary component between the cutter body and the chisel holder, absorbing collision impacts. The improved stable installation through the annular protrusion and groove mechanism ensures this intermediary function is effectively performed, reducing cutter loss while protecting the chisel holder from abrasion.
2Strength
If the gasket is designed to buffer high impact during milling, then the cutter loss rate is reduced, but the gasket causes friction and abrasion to the chisel holder
Solution Approach 1:
The gasket is installed on the cutter body in advance to provide cushioning protection during milling operations. By securing the gasket stably through the annular protrusion and groove mechanism before operation, it can effectively absorb high-impact collisions, reducing the transmission of harmful forces to the chisel holder and minimizing friction and abrasion.
3Reliability
If the gasket is made stable on the cutter body, then the buffering effect is improved, but the assembly structure becomes more complex
Solution Approach 1:
The annular protrusion and cutter surface groove form a nested connection structure that provides stable gasket installation. This design achieves reliable buffering performance while adding minimal structural complexity, as the protrusion and groove are integrated into the existing cutter body and gasket components without requiring additional separate parts.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A cutter assembly includes a cutter body, an insert and a gasket. The cutter body includes a head and a handle. The head includes a tapered forward portion having a seat disposed at a forward end and a head base. The head base includes an abutment surface and an annular protrusion disposed at the abutment surface. The insert is brazed into the seat. The gasket includes a gasket body, a through hole and a cutter surface groove. The gasket body includes a cutter surface facing towards the head base and a holder surface opposite to the cutter surface. The through hole penetrates the gasket body. The cutter surface groove is disposed at the cutter surface and located between an outer periphery of the gasket body and the through hole. When the gasket is assembled with the cutter body, the annular protrusion embeds in the cutter surface groove.