Spring Forming Machine Servo Control for Independent Tool Adjustment
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Solution Overview
Problem
Conventional spring forming machines require significant time and effort for individual adjustments of movable parts, as the cored bar's movement affects the pitch tool's position, making precise adjustments cumbersome.
Innovation Solution
A spring forming machine design featuring a forming tool slide mechanism, lifting mechanisms for the pitch and cutting tools, and a controller with individual drive control and interlocking mechanisms to independently operate servo motors, allowing precise positioning of forming tools and cored bar without simultaneous movement of the pitch tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cored bar is moved by individual adjustment, then the position of the cored bar is adjusted, but the pitch tool is also moved accordingly, making adjustment time-consuming and effort-consuming
Solution Approach 1:
The system segments the control of movable parts by introducing independent servo motors for the cored bar (96) and pitch tool (91), allowing them to be adjusted separately. The interlocking control unit selectively engages or disengages the coupling between these components based on operation mode, enabling independent adjustment when needed while maintaining linked operation during normal production.
Solution Approach 2:
The system dynamically changes the coupling state between the cored bar and pitch tool based on operational requirements. During individual adjustment mode, the interlocking control unit disengages the mechanical or control linkage, allowing independent movement. During normal operation, the linkage is re-engaged to maintain synchronized positioning, making the system adaptable to different operational states.
2Manufacturing precision
If the pitch tool and cored bar are mechanically linked, then their positions are coordinated, but individual adjustment becomes difficult and cumbersome
Solution Approach 1:
The interlocking control unit acts as an intermediary between the servo motors controlling the cored bar and pitch tool. It selectively activates or deactivates the control linkage based on operational mode, allowing the system to switch between coordinated operation (for precision) and independent adjustment (for ease of operation) without physical modification to the mechanical structure.
Solution Approach 2:
The system changes the control parameter state by switching the interlocking control unit between different modes. When in individual adjustment mode, the control parameters allow independent servo motor operation. When in normal operation mode, the parameters enforce coordinated movement, thus adapting the system behavior to match operational requirements without altering the physical configuration.
Data Source
AI summary
A spring forming machine includes: a forming tool slide mechanism including a slider with a forming tool; a first lifting mechanism including a slider with a pitch tool; a second lifting mechanism including a slider with a cutting tool; a fixing base to which the wire feeder and the forming tool slide mechanism are attached; a lifting base to which the cored bar, the first lifting mechanism, and the second lifting mechanism are attached; a plurality of servo motors serving as drive sources; a controller controlling the servo motors; an individual drive control unit individually driving the servo motors; and an interlocking control unit that, when the servo motor of the lifting base is individually operated, interlocks the servo motors of the lifting base and the first lifting mechanism and, when the servo motor of the first lifting mechanism is individually operated, does not interlock the servo motors thereof.