Serrated Tool Head Coupling for Quick-Change Cutting Holders
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Solution Overview
Problem
Existing tool holders lack a quick and efficient mechanism for removing and replacing tool heads while maintaining strong coupling between the tool head and holder, which limits versatility and operational efficiency in metal cutting applications.
Innovation Solution
A tool head design featuring serrated portions on multiple surfaces and a coupling recess allows for sliding engagement and clamping, enabling quick removal and reinstallation without completely disassembling the clamping member, and includes a retention mechanism to prevent tool head displacement during cutting operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a fastener is used to clamp the holder blade between two inner walls of the groove with serrated surfaces, then the coupling strength between tool head and holder is improved, but the time required for removal and replacement of tool heads increases
Solution Approach 1:
The tool head is segmented into a modular design with distinct coupling portions (serrated surfaces on opposite sides) that interface with corresponding portions on the holder. This segmentation allows the tool head to be quickly released and replaced while maintaining secure coupling during operation, resolving the contradiction between strong coupling and quick replacement.
Solution Approach 2:
The coupling mechanism transitions from a static fully-clamped state to a dynamic quick-release state. The holder blade can be rapidly extracted from the groove by releasing the clamping force, enabling quick tool head changes while maintaining strong coupling when clamped, thus resolving the time-strength contradiction.
2Ease of operation
If a bolt passing across the end of the shank is used for assembly, then the ease of assembly is improved, but the coupling strength and security against displacement deteriorates
Solution Approach 1:
The coupling mechanism extends from a single-point bolt connection to a multi-dimensional serrated interface. The serrated surfaces on opposite sides of the groove engage with corresponding serrated portions on the holder blade, creating coupling strength in multiple directions and dimensions, thereby improving both assembly ease and coupling strength simultaneously.
Data Source
AI summary
A tool head has a longitudinal axis, forward and rearward ends, and top, bottom and peripheral surfaces. The peripheral surface has first and second side walls provided with respective first and second serrated portions, each of the first and second side walls being divided into spaced apart top and bottom side wall portions. The peripheral surface also has a stopper wall which faces in the rearward direction, extends transversely to the second side wall and is provided with a stopper serrated portion. A rear wall formed at the rearward end and connects the first and second side walls. The tool head also includes an insert retaining portion proximate the forward end, and a coupling portion which extends in the direction of the rearward end and includes vertically spaced apart top and bottom coupling arms separated by a coupling recess opening out to the rear wall.