Machine Tool Spindle Air Seating Check With Two-Depth Annular Recess
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Solution Overview
Problem
Existing main spindle devices in machine tools face a tradeoff between detecting thin foreign matter quickly and preventing air supply flow channel blockages, which can lead to incorrect seating judgments, either delaying detection or causing false positives.
Innovation Solution
A main spindle device with an annular recess at the distal end face, featuring a shallow first section and a deeper second section, where the air supply flow channel opens, allowing for efficient detection of thin foreign matter without frequent blockages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the depth of the annular groove is made shallower, then thin foreign matter can be detected in a relatively short time, but the outlet of the air supply flow channel becomes blocked easily by foreign matter
Solution Approach 1:
The annular groove is segmented into two sections with different depths: a first section with a shallower depth for rapid detection of thin foreign matter, and a second section with a deeper depth to prevent blockage of the air supply flow channel outlet. This segmentation allows each section to fulfill its specific function while working together to resolve the contradiction between detection speed and reliability.
2Reliability
If the depth of the annular groove is made deeper, then the outlet of the air supply flow channel is blocked less frequently, but the time required for detection of thin foreign matter is increased
Solution Approach 1:
Different sections of the annular groove are given different local qualities in terms of depth. The first section has a shallower depth optimized for detecting thin foreign matter quickly, while the second section has a deeper depth optimized for preventing outlet blockage. This local differentiation of properties allows the system to achieve both rapid detection and high reliability without compromise.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances the reliability of seating confirmation by enabling rapid detection of thin foreign matter while minimizing the risk of air supply blockages, thus maintaining high detection accuracy without increasing the time required for confirmation.
Implementation Method 1
an air supply flow channel connecting with the annular recess and supplying the annular recess with compressed air
Implementation Method 2
a pressure detector detecting pressure of the compressed air inside the air supply flow channel
Data Source
AI summary
A main spindle device for a machine tool that checks the seating of a tool holder using compressed air, wherein the main spindle device for a machine tool comprises: a main spindle that has a distal end face in close contact with a flange end of the tool holder; an annular recess that is formed on the distal end face of the main spindle so as to be covered by the flange end of the tool holder; an air supply flow channel that is linked to the annular recess and that supplies compressed air to the annular recess; a compressed air source that supplies air to the air supply flow channel; and a pressure detector that detects the pressure of the compressed air in the air supply flow channel. The annular recess has a first section and a second section that is deeper than the first section, and the air supply flow channel is opened to the second section.