Dressing Spindle Calibration Using Test Mandrel
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Solution Overview
Problem
The calibration of the dressing spindle in machine tools is challenging due to its angular orientation, which makes precise measurement of its position difficult using standard calibration procedures.
Innovation Solution
A method involving the use of a test mandrel and a calibration sphere to accurately determine the tilt angle and referencing point of the dressing spindle, allowing for precise calibration with simple instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the dressing spindle is mounted at an angle to the Z axis to reshape the front surface of the grinding tool, then the ability to dress the grinding tool is improved, but the measurement precision of the rotation axis position deteriorates
Solution Approach 1:
The patent introduces a test mandrel as an intermediary object with a known geometric relationship to the dressing spindle rotation axis. The test mandrel serves as a mediator that translates the difficult-to-measure angled rotation axis position into easily measurable positions on its cylindrical surface, allowing precise determination of the rotation axis location without directly measuring the angled axis itself
Solution Approach 2:
The patent transforms the measurement problem by changing the measurement parameters from directly measuring the angled rotation axis position to measuring positions on the test mandrel surface. By measuring at multiple positions (at least two different heights and azimuths) on the test mandrel and calculating the rotation axis position through coordinate transformation, the system achieves precise measurement despite the angular orientation
Data Source
AI summary
A method for calibrating a dressing spindle of a machine tool having a main spindle arranged in a machine head and the dressing spindle arranged in the machining area, wherein a grinding tool can be mounted on the main spindle and a dressing tool can be mounted on the dressing spindle and the grinding tool and the dressing tool can be moved relatively to each other for dressing the grinding tool by the dressing tool.