Inclined CNC Worktable for Bottom-Up Machining Access
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Solution Overview
Problem
Current CNC machining centers are limited in machining pieces from bottom to top, as the head cannot be lowered below a certain height due to a horizontal and fixed lower supporting surface, requiring piece repositioning and interrupting processing cycles, thereby increasing production time.
Innovation Solution
A CNC machine with a worktable that rotates and translates on an inclined plane, allowing the head with the tool-holding spindle to be positioned at a lower height by varying the slide's height through inclined guides, enabling machining from bottom to top without repositioning the workpiece, and incorporating a programmable electronic circuit for controlled movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lower supporting surface is horizontal and fixed, then the structure is simple and stable, but the head cannot be lowered below a certain height, preventing machining from bottom to top
Solution Approach 1:
The lower supporting surface is changed from a horizontal plane to an inclined plane, introducing a new dimensional aspect (inclination angle) to the structure. This allows the head to access positions below the original horizontal level while maintaining structural stability, enabling machining from bottom to top without increasing overall device complexity.
2Adaptability or versatility
If the head is lowered to machine from bottom to top, then machining versatility is improved, but the head cannot be lowered below a given height due to the fixed supporting surface
Solution Approach 1:
By inclining the supporting surface, the system creates additional vertical space below the original horizontal level. This allows the head to be positioned lower for bottom-up machining while maintaining ease of operation through the same positioning mechanisms, resolving the contradiction between versatility and operational ease.
3Adaptability or versatility
If the piece is removed and repositioned to machine from bottom to top, then machining versatility is improved, but production time increases due to interruption
Solution Approach 1:
The inclined supporting surface allows the head to access bottom surfaces of workpieces without requiring removal or repositioning. The continuous inclined geometry enables seamless bottom-up machining operations, maintaining high productivity while achieving machining versatility in multiple directions.
Solution Approach 2:
The inclined supporting surface enables continuous machining operations from bottom to top without interrupting the workpiece on the table. The head can move continuously along the inclined plane to access different surfaces, eliminating the need to stop, remove, and reposition the workpiece, thus maintaining continuous productive action.
Data Source
Figure 1
AI summary
The invention is a numerical control machine comprising in its main parts a bearing structure-frame suited to support the various other parts, at least one lower surface (4), at least one table (7) suited to hold a workpiece (3) and mounted on said lower surface (4) and at least one head (8) with an electric tool-holding spindle (81), and wherein said lower surface (4) is inclined.