Machine Tool Superposition Control for Inclined-Axis Y Movement
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Solution Overview
Problem
In machine tools with superposition control, the movement of the spindle headstock is not accurately regulated when the tool post moves in the Y axis direction, leading to a potential loss of positional relationship between the tool post and the spindle headstock.
Innovation Solution
A machine tool design that includes movement axes in the X axis direction and a direction inclined but not orthogonal to the X axis, with a controller that regulates the movement of the spindle headstock in superposition control to maintain the positional relationship between the tool post and the spindle headstock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the tool post is moved in the Y axis direction by combining movement in the X axis direction and movement in the Ys axis direction (which is inclined relative to the X axis), then the tool post can achieve movement in the Y axis direction, but the spindle headstock moves in the X axis direction under superposition control, causing the positional relationship between the tool post and the spindle headstock to be lost
Solution Approach 1:
The control device monitors the movement of the tool post in both X axis and Ys axis directions, calculates the resulting X axis displacement, and uses this feedback information to regulate the spindle headstock movement, ensuring the positional relationship is maintained
Solution Approach 2:
The control device acts as an intermediary that coordinates between the tool post movement control and spindle headstock movement control, regulating the spindle headstock based on the tool post's combined axis movements to maintain proper positioning
2Adaptability or versatility
If superposition control is used to move the tool post in the Y axis direction by combining X axis and Ys axis movements, then multi-axis movement is achieved, but the spindle headstock movement in the X axis direction cannot be appropriately regulated
Solution Approach 1:
The control device merges the control of tool post movement with spindle headstock movement regulation, combining multiple control functions into a single integrated control system that handles both axes coordination and positional relationship maintenance
Data Source
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AI summary
In superposition control with a tool post that moves in a direction (Ys axis) inclined to an X axis to intersect therewith, a machine tool (100) includes a spindle headstock (110) having a main spindle (111), a spindle headstock (120) having a main spindle (121) with a Z3 axis parallel to an axis center direction of the main spindle (111), a turret (131) that moves relative to the spindle headstocks (110, 120), and a controller (150) that superposition-controls the spindle headstock (120) with movement of the turret (131) as a standard, wherein the turret (131) is movable in directions of an X axis and a Ys axis that are orthogonal to a Z axis and intersect with the Z axis at an angle except for the right angle, and the controller (150) moves the turret (131) in a direction of a Y axis different from the Ys axis and the X axis by combining movement in the direction of the Ys axis and movement in the direction of the Y axis, and regulates, in the superposition control, the movement of the spindle headstock (120) in the X axis direction associated with the movement in the Y axis direction.