Guide Bushing Multi-Spindle Lathe for Stable Long Workpiece Machining
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Solution Overview
Problem
Multi-spindle lathes are not suitable for machining long and narrow workpieces due to instability and vibration issues, and they cannot efficiently perform all necessary machining steps like deburring and turning at the same spindle station without underutilization.
Innovation Solution
The integration of a whirl-turn-milling unit on one tool slide and a guide bushing carrier on an adjacent slide, which guides and stabilizes the workpiece, allowing for 3-axis movement and positioning of tools relative to the workpiece, enabling precise machining of long workpieces without vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional multi-spindle lathes are used to machine long workpieces, then the workpiece can be processed, but the workpiece oscillates or vibrates during machining due to unfavorable length-to-diameter ratio
Solution Approach 1:
A guide bushing is introduced as an intermediary component between the workpiece and the machine tool. The guide bushing is arranged on a guide bush carrier that can be moved along the tool slide, providing physical support and guidance to the workpiece during machining operations, thereby reducing oscillation and vibration of long workpieces
Solution Approach 2:
The guide bush carrier is designed to be movable relative to the tool slide along the X-axis, allowing dynamic adjustment of the guide bushing position to match different workpiece lengths and machining requirements. This dynamic positioning capability enables the system to adapt to varying workpiece dimensions while maintaining stability
2Productivity
If multiple machining steps are performed at separate spindle stations, then each operation can be specialized, but the multi-spindle lathe cannot be optimally utilized due to underutilization of slides
Solution Approach 1:
Multiple machining operations (turning, milling, whirling, deburring) are merged into a single spindle station by equipping one tool slide with a guide bush carrier and another with multiple tools. This allows concurrent performance of multiple operations on the same workpiece at the same spindle station, maximizing machine utilization
Solution Approach 2:
The tool slide is designed with multi-functionality to perform various machining operations. By mounting different tools (turning tool, milling tool, whirling tool, deburring tool) on the same tool slide, the system achieves universal capability to execute diverse machining tasks without requiring separate specialized stations
3Stability of the object's composition
If a guide bush carrier is added to stabilize long workpieces, then workpiece stability improves, but the device complexity increases
Solution Approach 1:
The guide bush carrier is designed as a multi-functional component that not only provides guidance and support for long workpieces but also serves as a mounting platform for various machining tools. This universal design allows the same structural element to fulfill multiple purposes, minimizing additional complexity while maximizing functionality
Data Source
Figure 1
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AI summary
Device for machining workpieces (7) on a multi-spindle lathe (1), wherein the device comprises at least one tool carrier (4) with a tool slide (5) and at least two tool slides (5, 5', 5") are assigned to a rotatably mounted workpiece spindle (3) of the multi-spindle lathe (1), wherein workpieces (7) to be machined are arranged in the workpiece spindles (3), wherein at least one whirling turning and milling unit (8) is arranged on a first tool slide (5, 5') and at least one guide bushing carrier (12) with at least one guide bushing (13) is arranged on the second tool slide (5, 5") and that the guide bushing carrier (12) guides the workpiece (7) during machining with the whirling turning and milling unit (8).