Lathe Control Unit Vertical Motor Stacking
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Solution Overview
Problem
Escomatic DX automatic bar-turning machines, which rely on cam control systems, face challenges in retrofitting to numerically controlled systems due to space constraints and rigidity issues when replacing cam control systems with servomotors, leading to increased costs and reduced precision.
Innovation Solution
A control unit that utilizes a single servomotor to control the position of two tools, arranged on one side of the lathe, maintaining system rigidity and accuracy, and allows for easy maintenance without significant modifications to the chassis, using a compact design with motors placed at the rear or one above the other, and incorporating a second motor in the material advance axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two servomotors are arranged side by side in the location occupied by the gearbox, then the machine can be retrofitted with numerical control, but the control group occupies a relatively large space and makes access difficult
Solution Approach 1:
The patent transitions from a horizontal side-by-side arrangement to a vertical stacking arrangement of the two servomotors. This dimensional change allows the control group to occupy less horizontal space while maintaining the same functional capacity, thereby resolving the contradiction between retrofitting capability and space occupation.
2Device complexity
If the second actuator is located relatively far from the tool holder, then the control group can be compact, but very long sliding rods are required which reduce rigidity and positioning accuracy
Solution Approach 1:
By stacking the servomotors vertically rather than arranging them horizontally, the patent reduces the horizontal distance between the second actuator and the tool holder. This eliminates the need for excessively long sliding rods while maintaining a compact control group design, thus resolving the contradiction between compactness and positioning accuracy.
3Ease of manufacture
If servomotors are mounted on an existing Escomatic DX lathe with minimal modifications, then retrofitting costs decrease, but the mounting options are limited by the original design
Solution Approach 1:
The patent divides the control group into modular components that can be independently mounted and adjusted. This segmentation allows the servomotors to be installed on existing Escomatic DX lathes with minimal modifications to the frame, while still providing flexible mounting options through the modular design of the control group components.
Data Source
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AI summary
The invention relates to a control unit for an automatic lathe (1), in particular an Escomatic lathe, comprising: a first servomotor (11) for controlling the position of the tools (17, 19) of the lathe; a second servomotor (13) for controlling the forward movement of a material bar; mounting elements (110, 10) for mounting the two servomotors one above the other on the same side of the lathe; a transverse shaft (25) intended for laterally passing through said lathe in order to transmit the movements of the first servomotor (11); a lever (27) which is mounted at one end, opposite said servomotors (11, 13), of said transverse shaft (25) and arranged such as to be rotated in a vertical plane by said transverse shaft (25), such as to control the horizontal movement of an axial rod (23) for controlling the position of said tools (17, 19).