Electronic cam control device and electronic cam curve generation method

An electronic cam and control device technology, applied in the direction of electric controller, electric program control, non-electric variable control, etc., can solve the problems of slave axis vibration, the position of the slave axis servo motor cannot be completely followed, impact, etc., and achieve acceleration suppression. Effect

Active Publication Date: 2015-04-29
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the following problems arise: the position of the slave axis servo motor cannot completely follow the position indicated by the electronic cam curve, or, vibration or shock is generated in the slave axis

Method used

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  • Electronic cam control device and electronic cam curve generation method
  • Electronic cam control device and electronic cam curve generation method
  • Electronic cam control device and electronic cam curve generation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] figure 1 It is a figure which shows the structure of the electronic cam system concerning Embodiment 1. The electronic cam system includes an electronic cam control device 1A, a servo amplifier 3 , a servo motor 5 , an encoder 6 , and a load mechanism 8 .

[0028] The electronic cam control device 1A is a device that generates an electronic cam profile and controls the servo amplifier 3 , the servo motor 5 , and the load machine 8 using the generated electronic cam profile. In the electronic cam system, by controlling the servo amplifier 3 with the electronic cam control device 1A, the servo amplifier 3 controls the servo motor 5 and thereby controls the load machine 8 .

[0029] The electronic cam control device 1A generates an electronic cam curve based on coordinate data information 21 and acceleration / deceleration interval information 22 input by the user in advance, wherein the coordinate data information 21 specifies the positional relationship between the master...

Embodiment approach 2

[0164] Next, use Figure 7 and Figure 8 Embodiment 2 of the present invention will be described. In the electronic cam system according to Embodiment 1, in addition to the designated N coordinates, an electronic cam curve is obtained using (N+1) acceleration / deceleration intervals. The electronic cam system of this embodiment also obtains an electronic cam curve having the same properties as that of Embodiment 1, but instead of (N+1) acceleration / deceleration intervals, one parameter is used. Moreover, the electronic cam system automatically determines (N+1) acceleration and deceleration intervals according to a parameter, and then obtains the electronic cam curve.

[0165] Figure 7 It is a figure which shows the structure of the electronic cam system concerning Embodiment 2. for Figure 7 The realization and figure 1 The constituent elements of the electronic cam system according to Embodiment 1 shown with the same functions are denoted by the same reference numerals an...

Embodiment approach 3

[0216] Next, use Figure 9 to Figure 11 , Embodiment 3 of the present invention will be described. The electronic cam system of Embodiments 1 and 2 generates the following electronic cam curve, the waveform of which is the cam speed obtained by differentiating the position of the slave shaft with respect to the position of the main shaft, and the constant cam speed V in the adjacent area i , V i＋1 between linear acceleration / deceleration. The electronic cam system of the present embodiment generates an electronic cam curve by connecting constant cam speeds in adjacent regions in an arbitrary curve that monotonically increases or decreases monotonically. In the present embodiment, an example will be described in which an electronic cam curve is generated by connecting constant cam speeds in adjacent regions in a continuous acceleration / deceleration curve. The electronic cam system of this embodiment generates, for example, an electronic cam curve in which the cam speed accel...

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Abstract

The present invention is characterized in that it has: an electronic cam curve generating unit that generates an electronic cam curve by specifying a plurality of designated coordinates that define the relationship between the master axis position and the slave axis position; and an output unit that communicates with the master axis The slave shaft position corresponding to the position is output as a position command to the external device following the electronic cam curve, and the electronic cam curve generation part generates the electronic cam curve, so that the waveform of the cam speed obtained by differentiating the electronic cam curve with respect to the position of the main shaft has Each of the specified coordinates has a constant cam speed, and the adjacent areas are accelerated / decelerated by monotonically increasing or monotonically decreasing to connect the constant cam speed. The monotonic acceleration and deceleration interval.

Description

technical field [0001] The present invention relates to an electronic cam control device and an electronic cam curve generation method that generate an electronic cam curve from the relationship between the position of the main axis and the position where the slave axis should be when it moves corresponding to the position of the main axis. Background technique [0002] The electronic cam control device is a device that does not install a mechanical cam mechanism, but outputs the position where the slave axis should be when it moves corresponding to the position of the master axis based on the electronic cam curve set by software. Here, the position of the main shaft is, for example, the position of a servo motor of another axis, or the position of a synchronous encoder provided on a certain rotary axis, or the like. [0003] For example, an electronic cam control device is used in a rotary knife device, which drives a rotary knife synchronously with the movement of the pape...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D3/00
CPCG05B19/4083G05B2219/34343G05B19/416G05D3/12F16H25/08G05B11/36
Inventor 上田浩一郎丸下贵弘水野公博
Owner MITSUBISHI ELECTRIC CORP
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