Orientable Multi-Spindle Lathe for Flexible Synchronized Machining
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Solution Overview
Problem
Existing numerically controlled multi-spindle lathes lack flexibility in machining operations and are limited in the variety of machining tasks they can perform simultaneously.
Innovation Solution
A numerically controlled multi-spindle lathe design featuring a load-bearing structure with adjustable headstock and tailstock pairs, motorized headstocks, and a rotatable support system for spindles, allowing for synchronized and flexible machining operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional multi-spindle lathe with fixed headstocks and tailstocks is used, then the structure is simple and reliable, but the flexibility in machining operations is limited
Solution Approach 1:
The headstocks and tailstocks are made motorized with adjustable positions along the first translation axis, allowing dynamic reconfiguration of the machining setup. This enables the same machine to adapt to different workpiece lengths and machining requirements, significantly improving flexibility without requiring multiple dedicated machines
Solution Approach 2:
The lathe is designed with multiple headstock-tailstock pairs that can be independently positioned and controlled, allowing the same apparatus to perform multiple different machining operations on various workpieces. The universal design enables machining of different materials (wood, light alloys, synthetic resins) and different geometries using the same equipment
2Productivity
If multiple headstock-tailstock pairs are added to increase productivity, then more pieces can be machined simultaneously, but the device complexity increases
Solution Approach 1:
Multiple headstock-tailstock pairs are integrated into a single coordinated system sharing common control and guidance infrastructure. The carriages for different spindle pairs move along shared guide systems, and the numerical control system coordinates all spindles simultaneously, achieving multi-piece machining without proportionally increasing overall system complexity
Solution Approach 2:
The lathe is divided into independent modular units (headstock-tailstock pairs), each capable of independent operation. This segmentation allows each unit to be controlled individually while benefiting from the shared control system, enabling flexible productivity scaling without requiring a completely separate control architecture for each spindle pair
3Adaptability or versatility
If the distance between headstocks and tailstocks is made adjustable, then different workpiece lengths can be accommodated, but the mechanism complexity increases
Solution Approach 1:
The manual adjustment mechanism for headstock-tailstock distance is replaced with motorized actuation controlled by numerical control. Motors drive the headstocks and tailstocks along precision guide systems, enabling programmable position adjustment without complex manual mechanical linkages. This substitution maintains precision while simplifying the control interface and enabling automated operation
Data Source
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AI summary
The multi-spindle lathe comprises a base (9) along which a first carriage (23) moves along a first translation axis (X). The first carriage (23) carries a second carriage (25) which moves along a second translation axis (Y), orthogonal to the first translation axis. The second carriage (25) carries a slide (43), on which a rotatable support (41) carrying a plurality of spindles (31) is rotatably mounted. The rotatable support rotates around an axis parallel to a third translation axis (Z), along which the slide (43) moves with respect to the second carriage (25).