Chuck Table Correction for Cutting Precision
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Solution Overview
Problem
The accuracy of cutting-in a cutting blade relative to a workpiece is compromised due to potential inclinations of the chuck table and its holding surface, which are not perfectly parallel to the direction of movement, and variations in the chuck table's thickness and supporting base, affecting the precision of cutting operations.
Innovation Solution
A chuck table correction method involving a processing feeding step and an indexing feeding step, where the chuck table and cutting unit are moved in specific directions to form a corrected surface on the chuck table, allowing the cutting blade to cut into the holding surface and create a new, accurate holding surface for enhanced precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the chuck table and cutting unit are relatively moved for cutting operations, then the workpiece can be cut, but the holding surface of the chuck table becomes inclined relative to the direction of relative movement, compromising cutting accuracy
Solution Approach 1:
The patent applies preliminary action by performing a correction cutting operation before the actual workpiece cutting. The holding surface of the chuck table is cut by the cutting blade to form a corrected surface that is parallel to the direction of relative movement. This preliminary correction of the chuck table surface ensures that subsequent cutting operations achieve high accuracy without being affected by the inclination problem.
2Manufacturing precision
If the cutting blade is positioned at a predetermined height to cut into the holding surface, then a corrected surface is formed to improve cutting accuracy, but additional processing steps are required
Solution Approach 1:
The patent applies universality by making the cutting blade serve multiple functions. The same cutting blade used for cutting workpieces is also used to correct the holding surface of the chuck table. This multi-functional approach allows the system to perform both correction and cutting operations without requiring additional specialized tools, thereby improving precision without significantly increasing device complexity.
3Manufacturing precision
If the chuck table base upper surface is inclined or the chuck table thickness is non-uniform, then the holding surface cannot be parallel to the movement direction, but these are inherent manufacturing variations
Solution Approach 1:
The patent applies self-service by using the chuck table itself as the object to be corrected. The cutting blade cuts into the holding surface of the chuck table to form a corrected surface, making the chuck table self-correcting. This eliminates the need for separate correction procedures or external intervention, allowing the system to compensate for manufacturing variations in the chuck table base or thickness.
Data Source
AI summary
A chuck table correction method includes the step of: positioning a lower end of a cutting blade, relative to a chuck table, at a predetermined height for cutting into a holding surface; and relatively moving the chuck table and a cutting unit in a processing feeding direction, to cut the holding surface side of the chuck table, thereby forming the chuck table with a corrected surface that functions as a new holding surface.