Universal Cutting Insert Clamping for Mixed Corner Angles
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Solution Overview
Problem
Existing cutting tools require separate tool main units for different types of cutting inserts with varying corner angles, leading to reduced operation efficiency and increased costs, as well as limitations in processing various work materials due to machine tool constraints.
Innovation Solution
A cutting tool with a tool main unit that includes a fixing portion capable of selectively fixing multiple types of cutting inserts, including negative and positive types with corner angles exceeding or less than 60°, by utilizing a side wall face with distinct contact portions for each type, allowing for firm holding of four types of inserts with a single unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate tool main units are provided for each type of cutting insert, then each cutting insert can be firmly fixed, but operation efficiency drops and costs increase
Solution Approach 1:
The tool main unit is designed with a universal fixing portion that can accommodate multiple types of cutting inserts (negative/positive types with corner angles exceeding or less than 60°) through a standardized clamping mechanism. This multi-functional design eliminates the need for dedicated tool main units for each insert type, allowing operators to use a single tool main unit for various insert types, thereby improving operation efficiency while maintaining reliable fixing through the screw-clamp mechanism
2Manufacturing precision
If dedicated tool main units are used for each cutting insert type, then fixing accuracy is ensured, but the number of required holding tools increases
Solution Approach 1:
A standardized fixing portion with universal clamping features is designed to accommodate multiple cutting insert types. The fixing mechanism includes a bottom face for contact with the insert bottom and side wall faces with contact portions that adapt to different insert geometries. This universal design reduces the number of holding tools needed while maintaining fixing accuracy through precise contact surfaces and clamping action
3Adaptability or versatility
If multiple tool main units are provided for various work materials, then processing capability is enhanced, but machine tool constraints are exceeded
Solution Approach 1:
The tool main unit incorporates a universal fixing portion that can hold multiple types of cutting inserts suitable for different work materials and machining operations. By enabling a single tool main unit to accommodate negative and positive type inserts with various corner angles, the system expands processing capability for different work materials without requiring multiple tool main units, thus respecting machine tool constraints
4Reliability
If different tool main units are used for each cutting insert type, then optimal performance is achieved, but costs increase
Solution Approach 1:
The tool main unit is designed with a universal fixing portion that maintains reliable fixing performance across multiple cutting insert types. The standardized clamping mechanism and contact surfaces ensure optimal performance for negative and positive type inserts with various corner angles, eliminating the need to manufacture multiple dedicated tool main units and thereby reducing manufacturing costs
Data Source
AI summary
The present invention provides a cutting tool that can firmly hold four types of cutting inserts by one tool main unit. A cutting insert of a cutting tool 1 has an approximately triangular stereoscopic shape including three corner portions. A tool main unit has a fixing portion that can selectively fix a plurality of types of cutting inserts, including: a negative type cutting insert of which angle of the corner portion exceeds 60°, a positive type cutting insert of which angle of the corner portion exceeds 60°; a negative type cutting insert of which angle of the corner portion is less than 60°; and a positive type cutting insert of which angle of the corner portion is less than 60°. The fixing portion has a bottom face that contacts with a bottom face of the cutting insert, and a side wall face that contacts with a side face of the cutting insert. A portion, which contacts with the cutting insert, of the side wall face of the fixing portion differs depending on the type of the cutting insert.