Dual-Spindle Machining Center Layout for Large Workpiece Precision
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Solution Overview
Problem
Existing multi-axis machining centers are limited in machining large workpieces due to reduced productivity and precision, and multitasking machines are bulky and difficult to integrate into production facilities.
Innovation Solution
A multi-axis machining center with dual spindles and a mechanized tool magazine system, allowing simultaneous machining of large workpieces on multiple axes with enhanced productivity and precision, utilizing motorized components and a transversely offset workpiece holding table for increased versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple successive machining processes are performed on large workpieces using conventional machine tools, then different machining operations can be completed, but productivity and machining precision are drastically reduced due to repeated workpiece repositioning
Solution Approach 1:
The patent combines multiple machine tools into a single integrated multi-axis machining center that can perform milling, boring, tapping, and other machining operations simultaneously. This merging eliminates the need to transfer workpieces between separate machines, thereby maintaining high productivity and precision while processing large workpieces.
Solution Approach 2:
The machining center is designed with multi-functional capability to perform various machining operations (milling, boring, tapping, etc.) using a single spindle system. This universal machine can handle different machining tasks without requiring workpiece repositioning, thus resolving the contradiction between completing multiple machining processes and avoiding productivity loss.
2Adaptability or versatility
If multitasking machines with single spindle and five axes are used for large workpieces, then different machining processes can be performed, but productivity is limited and the machine becomes extremely bulky
Solution Approach 1:
Instead of using a single spindle system, the patent divides the machining capability into multiple parallel spindles (first and second spindles) that can operate independently and simultaneously. This segmentation allows multiple machining operations to be performed at the same time on different portions of the workpiece, significantly increasing productivity while maintaining versatility.
Solution Approach 2:
The patent introduces a vertical arrangement of spindles (first spindle for horizontal machining, second spindle for vertical machining) adding a dimensional aspect to the machining center. This multi-dimensional spindle configuration enables simultaneous machining from different orientations, enhancing both productivity and versatility without requiring an extremely bulky horizontal layout.
3Adaptability or versatility
If multitasking machines are designed to handle large workpieces, then machining capability is improved, but the machine becomes extremely bulky and difficult to place inside production facility
Solution Approach 1:
The patent utilizes vertical space by arranging spindles in different orientations (horizontal and vertical) and positioning them at different heights. This three-dimensional spindle arrangement allows the machine to handle large workpieces without requiring excessive horizontal footprint, thus reducing the overall machine volume and making it easier to integrate into production facilities.
Data Source
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AI summary
A machining center, comprising two independent carriages (14', 14'') that are supported so that they can slide along respective longitudinal translation axes (X', X'') by two parallel horizontal rails (16a, 16b) which are fixed in a raised position to a supporting structure (12). The carriages (14', 14'') support respective machining heads (22', 22'') which can move along two respective translation axes (Y', Y'', Z', Z''). The machining heads (22', 22'') support respective tool holding spindles (28', 28'') in a rotatable manner about a horizontal rotation axis (Yr', Yr'') by virtue of rotary support means (26', 26''). A workpiece holding table (34) is supported at the base (30', 30'') of the supporting structure (12). Two mechanized tool magazines (36', 36'') are supported at the opposite longitudinal ends of the supporting structure (12) and are accessible by the spindles (28', 28''). The rotary support means (26', 26'') and/or the workpiece holding table (34) can rotate about a respective vertical axis.