Posture Adjustment Unit for Constant Speed Control
Solution Overview
Problem
Existing techniques struggle to maintain a constant posture change speed for control target parts in machines, leading to rapid posture changes that deteriorate work quality in applications like welding, coating, and cutting.
Innovation Solution
A control device and teaching device that adjust the posture of a control target part based on reference information, using either a reference point or reference line to ensure a substantially constant posture change speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a teacher manually adjusts posture at each teaching point to maintain constant posture change speed, then work quality is improved, but the teaching process becomes complex and difficult for inexperienced operators
Solution Approach 1:
The system automatically calculates and adjusts posture change speeds between teaching points without requiring manual intervention. The control device computes the posture change amount and speed based on the movement distance and predetermined posture change speed, eliminating the need for teachers to manually adjust each posture point while maintaining constant posture change speed throughout the operation trajectory.
2Manufacturing precision
If a teacher teaches posture by trial and error to achieve constant posture change speed, then work quality is improved, but teaching time is increased
Solution Approach 1:
The system pre-calculates the posture change speed for each operation instruction based on the movement distance between teaching points and a predetermined posture change speed. This preliminary calculation is performed automatically during the teaching process, eliminating the need for trial and error adjustments and significantly reducing the time required to teach the operation trajectory while ensuring constant posture change speed.
3Productivity
If posture change amount is increased to match movement distance ratio, then movement efficiency is improved, but posture change speed becomes unstable and work quality deteriorates
Solution Approach 1:
The system changes the parameter from fixed posture change amount to calculated posture change speed. For each operation instruction, the control device calculates the posture change speed by dividing the posture change amount by the movement time (which is derived from movement distance and movement speed). This parameter change ensures that posture change speed remains constant even when movement distance varies, maintaining work quality while allowing efficient movement.
Data Source
AI summary
This control device comprises: a posture adjustment unit that, on the basis of reference information for the posture of a to-be-controlled part of a machine, adjusts the posture of the to-be-controlled part on the movement track thereof; and a control unit that controls the operation of the machine on the basis of the adjusted posture. The posture adjustment unit uses a reference point and/or a reference line as the reference information.