Vertical Lathe Spindle Carrier Rigidity and Access
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Solution Overview
Problem
Existing vertical lathes face challenges in achieving a rigid and space-saving design while maintaining accessibility to the tool spindles, as prior designs either compromise on rigidity or hinder tool spindle accessibility due to bearing and drive configurations.
Innovation Solution
A vertical lathe design where the workpiece spindle can move parallel to the spindle carrier's pivot axis, allowing for a space-saving layout and unobstructed access to the tool spindles, with multiple tool spindles arranged along this axis, integrated motor spindles for direct drive, and a swivel drive positioned for compact automation, and a housing with an accessible opening for easy tool access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the spindle carrier is mounted with two opposite pivot bearings to improve rigidity, then the rigidity and manufacturing precision are improved, but the accessibility to tool spindles deteriorates due to the machine wall blocking access
Solution Approach 1:
The patent inverts the conventional arrangement by positioning the pivot bearings on the same side as the tool spindles rather than opposite sides. This inversion allows the machine wall to be positioned away from the tool spindles, providing unobstructed access while maintaining rigidity through the pivot bearing configuration.
Solution Approach 2:
The patent changes the spatial arrangement by arranging multiple tool spindles in a distributed configuration around the workpiece spindle, utilizing three-dimensional space more effectively. This dimensional reorganization allows operators to access tool spindles from multiple directions without being blocked by the machine wall.
2Ease of operation
If the workpiece spindle moves perpendicular to the pivot axis to approach workpiece feed devices, then the workpiece feeding function is achieved, but the accessibility to tool spindles deteriorates and requires accepting compromised rigidity or difficult access
Solution Approach 1:
The patent implements dynamic positioning capabilities where the workpiece spindle can move not only perpendicular to the pivot axis for workpiece feeding but also parallel to the pivot axis. This dynamic multi-directional movement allows the system to adapt its approach path, enabling operators to access tool spindles from optimal angles while maintaining the workpiece feeding function.
3Ease of operation
If the workpiece spindle moves parallel to the pivot axis, then the accessibility to tool spindles and space utilization are improved, but additional positioning capabilities are required
Solution Approach 1:
The patent designs the workpiece spindle with universal multi-directional movement capabilities that serve multiple functions: perpendicular movement enables workpiece feeding, parallel movement enables operator access to tool spindles, and the combined capabilities provide flexible positioning for various machining operations. This multi-functionality reduces the need for separate dedicated positioning devices.
Data Source
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AI summary
The lathe has a vertically-arranged workpiece spindle (3) comprising a workpiece retainer (4) at a lower side, and a tool spindle i.e. integrated motor spindle, arranged on a spindle support (8) that is rotatable around a horizontal pivot axis (9). The workpiece spindle is moved along a movement direction (X) that is aligned parallel to the direction of the pivot axis. A workpiece supplying and delivering station (14) is arranged adjacent to the spindle support in the direction of the pivot axis. The spindle support has two pivot bearings that are arranged on the tool spindle.