Movable Inner Guide Channel for Vibration-Stable Bar Feeding
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Solution Overview
Problem
In automatic lathes, the transition area between the loading magazine and the lathe is prone to vibrations due to unsupported material bars, leading to reduced speeds and productivity, especially in long and hybrid lathes where the distance between support points is significant, and existing solutions are economically and practically limited by the need for frequent part replacement and difficult access.
Innovation Solution
A material bar magazine with a channel system featuring a first outer guide channel and a second inner guide channel that can move synchronously with the headstock along the longitudinal axis, reducing the distance between the channel system and the collet chuck, thereby minimizing vibrations and oscillations, and allowing for a lighter load to be moved, eliminating the need for additional transition tubes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the headstock is made mobile to enable Swiss turning processes and feed movements in the Z-axis, then productivity and machining capability are improved, but vibrations occur in the transition area between the loading magazine and the lathe due to unsupported material bars
Solution Approach 1:
The guide channel is designed to be movable along the longitudinal axis, synchronized with the headstock position. This dynamic adjustment ensures the guide channel remains at an optimal distance from the collet chuck throughout the machining cycle, providing continuous support to the material bar and preventing vibrations even when the headstock moves for Swiss turning operations
Solution Approach 2:
The movable guide channel acts as an intermediary element between the loading magazine and the headstock. It dynamically adjusts its position to maintain proper support for the material bar during headstock movement, eliminating the unsupported transition area that causes vibrations while allowing the headstock to perform its machining functions
2Adaptability or versatility
If the distance between the loading magazine and the headstock is increased to accommodate longer workpieces, then versatility is improved, but vibrations are exacerbated due to longer unsupported spans
Solution Approach 1:
The guide channel's movable design allows it to dynamically adjust its position along the longitudinal axis based on the headstock position and workpiece requirements. This enables the system to accommodate longer workpieces while maintaining optimal support distance, preventing vibrations that would occur with fixed, longer spans
3Device complexity
If a fixed guide channel is used in the loading magazine, then device complexity is reduced, but the transition area remains unsupported during headstock movement, causing vibrations and reduced productivity
Solution Approach 1:
The guide channel is designed with movable mounting that allows it to move synchronously with the headstock along the longitudinal axis. This dynamic capability eliminates vibrations during headstock movement, enabling higher machining speeds and improved productivity while adding only minimal complexity to the overall system
4Productivity
If the guide channel is moved closer to the headstock to reduce vibrations, then productivity is improved, but the loading magazine becomes more complex and harder to maintain
Solution Approach 1:
Instead of permanently positioning the guide channel close to the headstock, the invention provides it with movable mounting that allows dynamic adjustment. This maintains optimal distance for vibration prevention during machining while allowing the guide channel to be easily positioned and maintained during loading operations, balancing productivity with ease of manufacture
Data Source
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AI summary
The invention relates to a material bar magazine for guiding material bars on an automatic lathe, and to a system comprising such a magazine and an automatic lathe with at least one, in particular one, headstock displaceable along a longitudinal axis of the material bar magazine. The material bar magazine includes a material bar-guiding channel system with a channel opening system and is characterized in that the channel system of the material bar magazine has a first, outer guide channel (14.3, 14.4) and a second, inner guide channel (14.9) mounted inside the first guide channel so as to be movable along the longitudinal direction relative to the first guide channel, wherein the second, inner guide channel (14.9) is connected to the headstock (14.10) of the automatic lathe is coupled or is coupled, namely for moving the second, inner guide channel as a result of a change in position of the headstock along a longitudinal axis of the material bar magazine in towing operation synchronously with it along the longitudinal axis and relative to the first guide channel.