Multi-Spindle Lathe with NC Carriages for Flexible Precision Turning
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Solution Overview
Problem
Existing multi-spindle lathes, particularly those used for manufacturing furniture components, face limitations in flexibility, productivity, and accuracy due to their reliance on templates for shape reproduction, which restricts their ability to efficiently produce diverse elongated workpieces.
Innovation Solution
A numerically controlled multi-spindle lathe configuration with adjustable centers and tailstocks, synchronized motorized rotation, and multiple translation axes allows for flexible and high-precision machining of multiple workpieces simultaneously, enhancing productivity and accuracy by enabling synchronized rotation and movement of tools along multiple axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If copying machines with templates are used to manufacture workpieces, then manufacturing accuracy is maintained through template reproduction, but flexibility and adaptability are reduced due to reliance on fixed templates
Solution Approach 1:
The patent replaces the mechanical template-based control system with a numerically controlled system that uses programmed coordinates and automated tool paths. This substitution eliminates the need for physical templates while maintaining manufacturing precision through digital control, thereby increasing flexibility and adaptability.
Solution Approach 2:
The invention changes the control parameters from fixed template geometries to variable numerical control parameters. By using programmable coordinates, feed rates, and tool paths, the system can adapt to different workpiece configurations and machining requirements while maintaining accuracy through precise numerical control.
2Productivity
If multiple workpieces are machined simultaneously on multi-spindle lathes, then productivity is increased, but machine complexity and synchronization requirements increase
Solution Approach 1:
The patent divides the multi-spindle lathe into independent yet synchronized modules, where each spindle-center-tailstock assembly can be controlled individually through numerical control. This segmentation allows for simplified control of each unit while maintaining overall synchronization, reducing machine complexity compared to traditional mechanically coupled systems.
Solution Approach 2:
The invention incorporates feedback mechanisms through numerically controlled motors that monitor and adjust the rotation and positioning of each spindle, center, and tailstock. This feedback ensures precise synchronization across multiple workpieces being machined simultaneously, maintaining productivity while managing complexity through automated control.
3Adaptability or versatility
If centers and tailstocks are fixed in position, then machine structure is simplified, but adaptability to different workpiece lengths and configurations is reduced
Solution Approach 1:
The patent transforms the fixed centers and tailstocks into dynamically adjustable components. The centers are motorized and can be positioned at variable locations along the workpiece, while tailstocks are adjustable in position. This dynamic capability allows adaptation to different workpiece lengths and configurations without requiring complex reconfiguration mechanisms.
Solution Approach 2:
The invention creates a universal machining system where the same spindle-center-tailstock assembly can machine various workpiece types and lengths by adjusting the position of centers and tailstocks. This multi-functionality is achieved through numerically controlled positioning, eliminating the need for multiple specialized fixtures or machine configurations.
Data Source
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AI summary
The lathe comprises a bearing structure (3) with a base (9) extending according to a first translation axis (X). Centers and tailstocks are configured to support a plurality of workpieces to be machined simultaneously. The lathe comprises: a first carriage (23) guided on first guides (21) integral with the base (9) and extending in the direction of the first translation axis (X); and a second carriage (25), supported by the first carriage (23) and movable with respect to the first carriage (23), on second guides (27), in the direction of a second translation axis (Y), orthogonal to the first translation axis (X). A plurality of spindles (31) with parallel axes, carried by the second carriage (25), are configured to machine a plurality of workpieces (P) simultaneously.