Multi-Axis Turntable Layout for Stable Tool Rigidity
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Solution Overview
Problem
Existing double rotating shaft turntables are limited in versatility and flexibility, leading to reduced machining accuracy and surface quality when handling workpieces of varying sizes, as they require longer cutting tools and spindle overhangs, compromising rigidity and size tolerance.
Innovation Solution
A multi-axis turntable design featuring a rocker arm, swing arm, and workbench with adjustable rotation axes, allowing continuous adjustment of the machining area proximity to the primary rotation axis, thereby stabilizing cutting tool rigidity and improving machining accuracy across different workpiece sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed double rotating shaft turntable is used, then the structure is simple, but the machining accuracy deteriorates when machining smaller workpieces due to longer cutting tool overhang
Solution Approach 1:
The patent applies the dynamics principle by making the swing arm rotatable around the first rotation axis, allowing the second rotation axis to change position dynamically. This enables adjustment of the cutting tool overhang length according to workpiece size, maintaining rigidity and machining precision without complicating the overall structure
Solution Approach 2:
The patent changes the parameter of the second rotation axis position by rotating the swing arm to different angles. This parameter change allows optimization of the cutting tool overhang for different workpiece sizes, improving surface quality while maintaining structural simplicity
2Ease of operation
If the cutting tool overhang is increased to machine smaller workpieces, then the machining area is approached, but the rigidity of the cutting tool system deteriorates
Solution Approach 1:
The swing arm's rotatable design allows dynamic adjustment of the second rotation axis position, enabling the cutting tool to reach smaller workpieces while maintaining optimal overhang length, thus preserving rigidity without sacrificing accessibility
3Ease of manufacture
If a fixed turntable design is used, then the manufacturing is simple, but the versatility for different workpiece sizes is limited
Solution Approach 1:
The rotatable swing arm provides dynamic positioning capability, allowing the same turntable structure to accommodate various workpiece sizes by adjusting the second rotation axis position, enhancing versatility without complicating manufacturing
Solution Approach 2:
The turntable is designed with multi-functionality through the swing arm mechanism, enabling it to process workpieces of different sizes using the same structure, thus achieving versatility while maintaining manufacturing simplicity
Data Source
AI summary
A multi-axis turntable includes a base, a rocker arm and a first driving device capable of driving the rocker arm to rock around the first rotation axis on the base. A swing arm and a second driving device, which is capable of driving the swing arm to swing around the second rotation axis on the rocker arm, are provided on the rocker arm. A workbench and a third driving device for driving the workbench to rotate around the third rotation axis are provided on the swing arm. The second rotation axis and the third rotation axis are parallel to each other or on different planes. Compared with the existing double rotating shaft turntable, the multi-axis turntable of the present invention has a cutting tool system of good and stable rigidity.