Multi-Spindle Machine Tool Rupture Separation Method
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Solution Overview
Problem
Existing methods for producing multiple finished workpieces from a blank using machine tools are inefficient and lack a straightforward approach to separate and finish the workpieces effectively.
Innovation Solution
A machine tool is equipped with a controller that controls the machining of the raw part to create a groove and separate the workpiece by driving both workpiece spindles at different speeds, causing the thin cutting edge to rupture and allowing for efficient separation and subsequent finishing of the workpieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a groove is cut into the raw part to separate workpieces, then the workpieces can be separated, but the thin web remaining after groove cutting must be destroyed by rupture through differential spindle speeds
Solution Approach 1:
The separation process is divided into two distinct stages: first, a groove is cut into the raw part to create a separation line, and second, the thin web remaining after groove cutting is destroyed by rupture through differential spindle speeds. This segmentation allows each stage to be optimized independently for its specific function.
Solution Approach 2:
The system employs dynamic control of spindle speeds, where the first and second workpiece spindles are driven at different speeds to create controlled rupture of the thin web. This dynamic speed differential is essential for achieving clean separation without requiring additional cutting tools.
2Productivity
If multiple workpieces are produced from a single blank, then productivity increases, but the process requires complex multi-spindle coordination and control
Solution Approach 1:
Multiple workpiece spindles (first and second spindles) are combined in a single machine tool system, allowing simultaneous processing of multiple workpieces from one raw part. The spindles are coordinated through a control unit that manages their respective movements and operations.
Solution Approach 2:
The machine tool system performs multiple functions: the first workpiece spindle performs initial machining operations, the second workpiece spindle performs finishing operations, and both spindles work together for separation. This multi-functionality increases productivity without requiring separate machines for each operation.
3Productivity
If the raw part remains in the first workpiece clamping device after separation, then the second workpiece can be finished and removed, but the first raw part requires subsequent processing
Solution Approach 1:
The first workpiece spindle performs preliminary machining operations on the raw part before separation occurs. After the second workpiece is separated and removed for finishing, the first raw part remains in position ready for subsequent processing without requiring repositioning or re-clamping.
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 method enables the efficient production of multiple finished workpieces by effectively separating and finishing them from the raw part, particularly suitable for producing ring-shaped workpieces from pipe sections.
Implementation Method 1
both workpiece spindles are driven with the clamped workpiece at different speeds, so that the thin cutting edge remaining after the groove has been cut Web is destroyed by rupture
Data Source
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AI summary
The machine tool has a machine frame (1) and a work piece carriage (4) moving at the machine frame in a horizontal x-direction. The work piece carriage has a spindle axis (24) running around a work piece clamping unit (22) in a vertical z-direction. The work piece clamping unit is driven in a rotary manner by a spindle driving motor (23). An independent claim is also included for a method for manufacturing multiple work pieces from a blank on a machine tool.