Machine Tool Pivoting Element Reinforcement for Precision
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Solution Overview
Problem
Existing machine tools for producing toothed sections on workpieces face challenges in achieving high machining precision and productivity due to limitations in rigidity, thermal behavior, and vibration resistance.
Innovation Solution
A machine tool design featuring a pivoting element with two workpiece spindles that are pivotable and rotatable, a tool positioning unit with a tool head that is linearly movable and pivotable, and a reinforcing frame structure that includes a bearing element and a reinforcing element fastened to the machine bed, enhancing rigidity and vibration resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional machine tool structure is used with single workpiece spindle, then the device complexity is low, but the productivity is limited and machining precision is insufficient
Solution Approach 1:
The patent combines multiple workpiece spindles (at least two) on a single pivoting element, merging their functions into one integrated unit. This allows simultaneous machining of multiple workpieces or rapid sequential machining, significantly improving productivity while the pivoting element design keeps the overall structure manageable
Solution Approach 2:
The pivoting element is pre-configured with multiple workpiece spindles in ready positions, allowing quick switching between workpieces without requiring complex repositioning operations. The bearing element and reinforcing element are pre-installed to provide immediate structural support, reducing setup time and increasing effective machining productivity
2Manufacturing precision
If conventional mounting of pivoting element is used, then the device complexity is low, but the machining precision is insufficient due to poor rigidity and vibration resistance
Solution Approach 1:
The bearing element is designed as a curved or arc-shaped component that connects the pivoting element to the reinforcing element. This curved geometry provides optimal force distribution and structural reinforcement, enhancing rigidity and vibration resistance while maintaining a compact design that doesn't excessively increase device complexity
Solution Approach 2:
The reinforcing element is designed as a composite structural component that integrates multiple functions: structural support, vibration damping, and precision positioning reference. This composite design provides enhanced rigidity and machining precision without requiring separate components for each function, thereby controlling device complexity
Data Source
AI summary
To produce toothed sections on workpieces, a machine tool has a machine bed, a pivoting element with at least two workpiece spindles arranged thereon and a tool positioning unit with a tool head. The spindles can be pivoted relative to the machine bed about a workpiece spindle pivot axis and each spindle has a workpiece receiver that can be rotatably driven about a rotational axis. The tool head can be linearly moved in three directions relative to the spindles, and can be pivoted about a tool head pivot axis. A bearing element extending in the direction of the workpiece spindle pivot axis, has a free end which is pivotable about the workpiece spindle pivot axis, and is rigidly arranged on the pivoting element. A reinforcing element is fastened to the machine bed. The pivoting element is reinforced about the workpiece spindle pivot axis by the reinforcing element.