Controlling device for coil spring bending tool and controlling method therof
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United States of America Patent
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Jul 16, 2019
Grant Date -
Dec 28, 2017
app pub date -
Jan 22, 2015
filing date -
Jan 22, 2015
priority date (Note) -
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Abstract
A control method and a device for a cutter shaped by a helical spring includes two controlling apparatuses (20) connected to two coil spring bending tools (10) respectively and including a lifting apparatus (30). The two controlling apparatuses (20) are arranged in the same assembly platform (40). The controlling apparatus (20) controls an amount of displacement of the stretching and retracting of the two coil spring bending tools (10). The amount of displacement of the coil spring bending tools (10) and the amount of up and down movement of the assembly platform (40) are controlled simultaneously by a motor (50). By applying the concept of relative coordinates, the requirements of control can be simplified from two two-dimensional control movements to three single-axis linear movements by using the coordinate of the center point (P3) of a spring coil as the origin of the coordinates for the movement of the spring outer diameter cutter. In the case that the distances of linear movement on the three axes are identical or at a fixed ratio, the advantage of reducing the number of motors is achieved.
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