Spindle Tool Interface Reciprocation for Chip Removal
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Solution Overview
Problem
Conventional machine tools face inefficiencies in removing chips adhering to tools due to varying amounts and states of chips, despite existing techniques like cleaning air and vibration methods.
Innovation Solution
A machine tool design incorporating a tool attachment unit, a tool change unit, an air supply unit, and a controller that allows the tool and tool insertion portion to reciprocate relative to each other, creating turbulence in airflow through a gap between the tool and the tool insertion portion to efficiently remove chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cleaning air is passed through the gap between the tool and tool attachment unit while the tool is stopped, then chips can be removed from the tool, but chips may not be sufficiently removed due to varying amounts and states of chips adhering to the tool
Solution Approach 1:
The invention makes the tool and tool insertion portion reciprocate relative to each other during the cleaning process, transforming the static cleaning method into a dynamic one. This reciprocating motion creates varying gap distances that generate turbulence in the airflow, enhancing the ability to remove chips of varying amounts and states consistently
Solution Approach 2:
The reciprocating motion between the tool and tool insertion portion creates periodic changes in the gap distance. This periodic action generates pulsating airflow that effectively removes chips by creating repeated cycles of high-velocity air bursts, improving reliability of chip removal across different chip conditions
2Ease of manufacture
If a drive motor is used to vibrate the tool, then chips adhering to the tool can be removed, but chips may not be sufficiently removed due to varying amounts and states of chips
Solution Approach 1:
The invention replaces the mechanical vibration method with a pneumatic approach. By supplying air to the gap between the tool and tool insertion portion while they reciprocate, the system uses pneumatic forces to remove chips, which is more effective for varying chip amounts and states
Solution Approach 2:
The system creates dynamic pneumatic cleaning by combining air supply with reciprocating motion. The varying gap distance during reciprocation creates changing airflow patterns and turbulence, making the chip removal process adaptable to different chip conditions and improving consistency
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 configuration effectively removes chips from the tool by generating turbulence in the airflow, ensuring efficient chip removal even with varying chip amounts and states, enhancing the tool change process.
Implementation Method 1
creating turbulence in airflow through a gap between the tool and the tool insertion portion to efficiently remove chips
Data Source
Figure 1
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AI summary
A machine tool includes a spindle (43) including a tool insertion portion (44) having a shape of an opening into which a shank (201) of a tool (200) is inserted and configured to attach the tool (200) thereto, a tool change unit configured to change the tool (200) attached to the spindle (43) while gripping the tool (200), an air supply unit configured to supply air to a gap (210) between the tool insertion portion (44) and the shank (201) of the tool (200) when the tool change unit changes the tool, and a controller configured to control driving of at least any one of the spindle (43) and the tool change unit to allow the tool (200) and the tool insertion portion (44) to reciprocate relative to each other in a predetermined direction with the shank (201) of the tool (200) inserted into the tool insertion portion (44) and with a gap (210) provided between the tool insertion portion (44) and the shank (201) of the tool (200).