Vertical Machining Center Layout for Compact Rigidity
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Solution Overview
Problem
Existing vertical machining centers require large installation spaces due to overhung structures for maintaining rigidity, which limits their compactness and mobility.
Innovation Solution
A vertical machining center design featuring a slant-shaped column with offset Y-axis guides and a movable spindle head, along with a protection cover that expands and contracts, allows the table to enter the column's lower part, reducing overhang and space requirements while increasing rigidity through a compact structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the spindle head is positioned with a large horizontal distance from the column to enable table movement, then the machining range is improved, but the machine rigidity deteriorates
Solution Approach 1:
The patent introduces a slanted column structure that adds a dimensional inclination to the traditional vertical column. This slant allows the Y-axis guides to be positioned at different heights and horizontal locations, enabling the spindle head to achieve greater horizontal travel distance while maintaining structural rigidity through the inclined support geometry.
2Adaptability or versatility
If the saddle is positioned away from the column to increase machining range, then the adaptability is improved, but the machine rigidity deteriorates due to increased overhang
Solution Approach 1:
The patent employs asymmetric positioning of the Y-axis guides relative to the column centerline. The first Y-axis guide is positioned at a different location than the second Y-axis guide, creating an asymmetric support structure that optimizes both the reach of the spindle head and the rigidity of the saddle connection to the column.
3Reliability
If a protection cover is added to cover the Y-axis guides, then the machine completeness is improved, but the device complexity increases
Solution Approach 1:
The patent uses a bellows-type flexible protection cover that can expand and contract as the saddle moves along the Y-axis. This flexible membrane structure provides continuous protection for the Y-axis guides throughout the full range of motion without requiring complex mechanical joints, seals, or segmented coverings.
Data Source
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AI summary
An upright machining center (11) is characterized in being provided with: X-axis guides (29a, 29b) for moving and guiding a table (35) in the left-right direction on a bed (13); a column (15) provided on the bed (13) and provided with an opening (7) that straddles the X-axis guides (29a, 29b) in the front-back direction so that a moving body (27), on which the table (35) is provided, can enter therein in the left-right direction; a saddle (17), which is disposed on the upper part of the column (15) so as to be movable in the front-back direction and for which a first Y-axis guide (19a) that extends in the front-back direction on the right side of the left-right direction and a left second Y-axis guide (19b) that is located lower and parallel thereto are provided; and a main shaft head (22), which is disposed on the left side surface of the saddle (17) and moves in the vertical direction.