Split Slide Carriage for Accurate Cantilevered Cartesian Machine Tools
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Solution Overview
Problem
Large-sized Cartesian machine tools with horizontal slides face accuracy limitations due to structural deformations, and existing correction systems introduce geometric errors that are difficult to control.
Innovation Solution
A Cartesian machine tool design with a slide carriage divided into two parts, allowing vertical translation and transverse movement to compensate for deformations without deforming the sliding guides, using actuator means to restore the machining head's correct position and minimize geometric errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sliding guides of the slide are deformed to correct positioning errors, then positioning accuracy is improved, but geometric errors are introduced that are difficult to control during detection and correction
Solution Approach 1:
The slide carriage is divided into two separate parts: a first part coupled to the post for vertical movement, and a second part that can move transversely relative to the first part. This segmentation allows independent correction of positioning errors through transverse movement of the second part without deforming the sliding guides, thus improving positioning accuracy while avoiding geometric errors in the guiding elements
Solution Approach 2:
The system introduces dynamic adjustability by allowing the second part of the slide carriage to move transversely relative to the first part. This dynamic mechanism enables real-time correction of positioning deviations during operation, maintaining accuracy without permanent deformations to the structural elements or guides
2Productivity
If the slide and machining head are made larger to increase working capacity, then productivity is improved, but structural deformations increase that limit accuracy
Solution Approach 1:
By segmenting the slide carriage into two independently movable parts, the system can compensate for structural deformations in large-sized components through the transverse movement capability of the second part, maintaining positioning accuracy despite the increased size and working capacity
Solution Approach 2:
The system uses sensors to detect positioning deviations caused by structural deformations in large components, and the control system automatically adjusts the transverse position of the second part to compensate for these deviations, maintaining accuracy in large-sized machine tools
Data Source
AI summary
A Cartesian machine tool, of the type with a horizontal slide and a machining head supported in a cantilever manner by the slide, includes a slide carriage, with respect to which the slide can move horizontally with corresponding elements of horizontal translation, and a post, which includes two opposite guiding columns for the vertical movement of the slide carriage with elements of vertical translation. The slide carriage includes a first front part coupled to the post with the elements of vertical translation and a second rear part coupled to the first part with elements of translation in a transverse direction with respect to a direction of motion of the slide with respect to the carriage.