Multi-Axis Tool Head Layout for Negative-Angle Machining
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Solution Overview
Problem
Existing machine tools for multi-axis machining face limitations in precision, inability to mill negative angles, and stability issues, particularly with fork heads being massive and having limited processing options, and prior solutions do not allow for efficient machining of angles smaller than 0 degrees or horizontal alignment.
Innovation Solution
A machine tool design featuring a workpiece table and tool head holder with an angle housing that allows for movement in three perpendicular directions, enabling the tool head to rotate about an adjustment axis inclined relative to the angle housing axis, which can be rotated about an axis deviating from the horizontal or vertical, allowing for a wider angular range and improved accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fork head design is used to enable negative machining angles, then machining versatility is improved, but structural stability deteriorates due to robust construction and force redirection
Solution Approach 1:
The patent implements a dynamically adjustable tool head holder that can rotate about an adjustment axis inclined at a specific angle (e.g., 30°) relative to the angle housing axis. This dynamic positioning capability allows the tool to achieve negative machining angles and various orientations without requiring a massive fork head structure, thereby maintaining stability while improving versatility.
Solution Approach 2:
The invention changes the geometric parameters of the tool head mounting system by introducing an inclined adjustment axis with a specific angle (e.g., 30°) between the tool rotation axis and the angle housing axis. This parameter change enables negative angle machining and improved accessibility while avoiding the need for robust fork head construction, thus resolving the contradiction between versatility and stability.
2Measurement precision
If two rotary axes are arranged in series on a support bracket, then precise angular adjustment is improved, but device complexity increases
Solution Approach 1:
The patent combines the functions of multiple rotary axes into a integrated angle housing structure. The tool head holder is rotatably mounted to the angle housing about an adjustment axis, while the angle housing itself can be rotated about an angle housing axis. This merging of rotational functions into a unified structure reduces device complexity while maintaining precise angular adjustment capabilities through coordinated rotation of the combined system.
3Device complexity
If the tool head is mounted vertically on a cross slide, then structural simplicity is improved, but inability to mill negative angles occurs
Solution Approach 1:
The invention transforms the static vertical mounting arrangement into a dynamic system where the tool head holder can rotate about an inclined adjustment axis. This dynamic capability allows the tool to achieve negative machining angles and various orientations while maintaining relatively simple structural mounting to the angle housing, thus resolving the contradiction between structural simplicity and machining versatility.
Data Source
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AI summary
A machine tool for multi-axis machining of a workpiece in a single setup comprises a machine stand (1), a workpiece table (10) arranged on the machine stand (1), and a tool head holder (21) attached to the machine stand (1). The tool head holder (21) is designed for use with a tool rotating about a machining axis (53) of the tool head holder (21). The tool head holder (21) is movable relative to the workpiece table (10) in three mutually perpendicular directions and can be controlled for movement. An angle housing (20) is attached to the machine stand (1), with the tool head holder (21) rotatably mounted to the angle housing (20) at one end (23) of the angle housing about an adjustment axis (51).In addition, the angle housing (20) is rotatably attached to the machine stand (1) about an angle housing axis (52), wherein the angle housing axis (52) is aligned at an angle different from the table plane (54), and wherein the angle housing axis (52) and the adjustment axis (51) are at an angle to each other other than 0 degrees.