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Servo control device

A servo control device and motor technology, applied in program control, control system, digital control, etc., can solve the problems of energy loss, high speed of servo motor, acceleration, etc., and achieve the effect of excellent power efficiency and increased power supply

Pending Publication Date: 2021-01-19
FANUC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, in the case of controlling the servo motor for buffering like this, there are the following problems: Figure 5 As shown, the larger the inertia of the servo motor for buffering, the more rapidly it is necessary to accelerate the power storage control by the servo motor for buffering after regenerative control. The speed of the servo motor becomes excessive and energy is lost, resulting in reduced efficiency

Method used

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  • Servo control device
  • Servo control device
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Examples

Experimental program
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Embodiment Construction

[0027] Below, refer to Figure 1 to Figure 3 A servo control device according to an embodiment will be described.

[0028] Here, the servo control device of the present embodiment is a servo control device capable of reducing power consumption of a driving servo motor (electric motor) for driving a shaft of an industrial machine under high load such as high torque.

[0029] In addition, industrial machinery is an industrial machinery that generates a sharp increase in load when it is driven. Typical examples include punching machines, press-fitting machines, die-casting machines, injection molding machines, cutting machines, machine tools, and robots. Conveyors, measuring devices, testing devices, printing machines, food machines, packaging machines, welding machines, washing machines, coating machines, assembly devices, mounting machines, woodworking machines, sealing devices, and other industrial machines may be used.

[0030] Incidentally, for example, in a press machine, ...

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PUM

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Abstract

Provided is a servo control device for an industrial machine, the servo control device being capable of constructing a system having superior power efficiency than conventional systems. This servo control device is provided with: a drive motor (3) for driving an industrial machine; a load detection unit (5) for detecting the load or the amount of power consumed by the drive motor (3); a buffer motor (6) that regenerates power for the drive motor (3) on the basis of the detection result of the load detection unit (5); and a base speed setting unit (12) for restoring to a second base speed thatis set lower than the first base speed after the electric power is regenerated from the driving motor (3) by decelerating a preset fixed first base speed of the buffering motor (6) before the electricpower is regenerated from the driving motor (3).

Description

technical field [0001] The invention relates to a servo control device. Background technique [0002] It is well known that in the field of mechanical work, CNC (Computerized Numerical Control) technology is used to numerically control the amount of movement, movement speed, etc. by a computer, thereby highly automating the repetition of the same action, complex actions, etc. In addition, servo motors (electric motors) for driving shafts and the like of industrial machines such as press machines, injection molding machines, machine tools, and robots are subjected to driving control of rotation amount, speed, torque, and the like. [0003] On the other hand, for example, when the load such as the torque of the servo motor increases rapidly during pressing in a press machine, during mold clamping in an injection molding machine, or during cutting in a machine tool, the power consumption of the servo motor suddenly increases. The higher the peak power, the higher the contract ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P5/74H02P23/20
CPCH02P5/74H02P23/20G05B2219/42193G05B2219/45131G05B2219/41264H02P5/00G05B19/416G05B2219/34314G05B2219/34311H02P3/18Y02P80/10Y02P70/10G05B2219/41002G05B19/4141
Inventor 中邨勉猪饲聪史
Owner FANUC LTD