Y-Axis Insert Holder for Precise Projection and Core Height
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Solution Overview
Problem
In Y-axis direction automatic cutting lathes, the adjustment of the cutting tool's height (core height) and projection amount is not accurately considered, leading to potential dispersion within tolerance limits due to manufacturing accuracy limitations of the holder and insert.
Innovation Solution
A holder for cutting inserts is designed with a shape that allows adjustable projection amounts along the X-axis, featuring a positioning portion on the end portion to determine the projection amount from the tool rest, enabling easy adjustment of the cutting edge's height and facilitating precise positioning for accurate cutting operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If adjustment of core height is performed using shims in standard turning tools, then the height of the cutting edge can be adjusted, but the device complexity increases and adjustment becomes more difficult
Solution Approach 1:
The holder body itself serves as the adjustment mechanism through its protruding end portion design. The positioning portion on the holder directly determines the projection amount without requiring external shims or complex adjustment devices. The holder structure provides its own adjustment capability through the predetermined protrusion distance from the cutting edge.
2Ease of manufacture
If projection amount adjustment is not considered in Y-axis direction automatic cutting lathes, then manufacturing simplicity is maintained, but manufacturing precision deteriorates due to dispersion within tolerance
Solution Approach 1:
The holder is designed with a predetermined protruding end portion that establishes the correct projection amount before the cutting operation begins. The positioning portion is pre-configured at a specific distance from the cutting edge, so that when the holder is installed on the tool rest, the projection amount is automatically determined without requiring post-manufacturing adjustment or complex assembly procedures.
3Manufacturing precision
If a positioning portion is added to the holder end portion, then the projection amount can be accurately determined, but the device complexity increases
Solution Approach 1:
The positioning portion is merged with the holder body as an integrated feature rather than a separate component. The end portion of the holder itself forms the positioning structure that contacts the tool rest, combining the holder function with the positioning function in a single unified structure. This eliminates the need for separate positioning devices while maintaining accurate projection amount determination.
Data Source
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AI summary
Provided is a holder of a cutting insert that performs turning on a work by feeding a cutting edge in a Y axis direction which is different from a longitudinal direction (X axis) of a tool holder installed in a tool rest, and that can easily adjust the projection amount without contacting a part of the holder to the tool rest. A Y axis holder holds the cutting insert including a cutting edge to perform turning on a work that moves along the Z axis, and is installed in a state where relative movement in the X axis direction with respect to the tool rest is possible, such that a projection amount of the cutting insert along the X axis is changeable. The Y axis holder performs turning on the work using the cutting insert when the holder moves in the Y axis direction which is different from the X axis direction. The Y axis holder has a shape in which an end portion thereof in the X axis direction is projected from the cutting edge of the cutting insert, and a positioning portion to determine the projection amount of the cutting insert from the tool rest is disposed on the end portion.