Rotating Spherical Tool Chip Holder for Longer Finishing Life
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Solution Overview
Problem
Conventional finishing tools with spherical machining surfaces wear out quickly, leading to inefficient use of expensive tool chips due to limited usage of their surfaces.
Innovation Solution
A finishing tool design featuring a housing, slide and drive sleeves, and a chip holder that allows the tool chip to be mounted reversibly and rotated in a specific direction, enabling the chip to be used over its entire spherical surface, extending its service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the tool chip is mounted reversibly at front and back positions, then the service life of the tool chip is extended by using both sides, but the utilization of the spherical machining surface remains limited and the service life cannot be maximized
Solution Approach 1:
The chip holder is designed to rotate in the first direction during reciprocating movement, dynamically changing the contact position on the spherical machining surface. This rotation mechanism allows different portions of the spherical surface to be utilized sequentially, transforming a static two-position reversible mounting system into a dynamic multi-position utilization system that maximizes the service life of the tool chip.
2Productivity
If the same portion of the machining surface is used repeatedly, then the machining process is simple and efficient, but the surface becomes worn or damaged resulting in roughened machining surface of the workpiece
Solution Approach 1:
The rotation mechanism causes the contact position on the spherical machining surface to change during reciprocating movement, preventing concentrated wear at a single location. This dynamic position change distributes the mechanical stress across different areas of the spherical surface, maintaining surface quality and workpiece reliability while preserving machining efficiency.
Solution Approach 2:
The invention introduces rotational movement as an additional dimension to the reciprocating linear movement. This creates a two-dimensional utilization pattern on the spherical surface rather than one-dimensional repeated use, spreading wear across multiple areas and preventing surface degradation that would compromise workpiece quality.
Data Source
AI summary
A finishing tool, includes: a housing having a cylindrical holder chamber that opens toward a distal end and located along a central axis; a slide sleeve disposed coaxially with the central axis in the holder chamber and rotates only in a first direction; a drive sleeve disposed coaxially with the central axis in the holder chamber and rotates only in the first direction; a tool chip having a spherical surface at a distal end; and a chip holder penetrating the slide sleeve and the drive sleeve, reciprocable between a forward end and a rearward end, capable of mounting the tool chip at a distal end, axially slidable relative to the slide sleeve, and rotates in the first direction as the chip holder moves forward relative to the drive sleeve.