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Control device for machine tool

A machine tool control and control unit technology, applied in the direction of automatic control devices, motor control, feeding devices, etc., can solve the problems of cycle time increase, suppression, power consumption increase, etc.

Active Publication Date: 2010-10-20
FANUC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, like the device described in JP6-161535A, in the structure of extending the acceleration time of the servo motor for shaft feed, the cycle time increases, the power consumption of the above-mentioned equipment increases, and it is difficult to suppress the power consumption of the entire machine tool to the optimum.

Method used

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  • Control device for machine tool
  • Control device for machine tool
  • Control device for machine tool

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Experimental program
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Embodiment Construction

[0015] Below, refer to Figure 1 to Figure 8 Embodiments of the present invention will be described. figure 1 It is a diagram schematically showing the overall configuration of a machine tool to which the control device according to the embodiment of the present invention is applied.

[0016] figure 1 The machine tool shown is a so-called vertical machining center in which a spindle is arranged in a vertical direction. The spindle is driven to rotate by the spindle motor 10s, and the tool 11 is driven to rotate by the drive of the spindle motor 10s. The tool 11 is a cutting tool such as an end mill, a cutter, or a drill, or a grinding tool, and is detachably attached to the spindle head 12 . A table 13 is provided laterally below the tool 11 , and a workpiece 14 is fixed on the table 13 .

[0017] A ball screw 16 is bolted to the table 13 via a nut 15 . The ball screw 16 is rotationally driven by the feed axis motor 10f, and the table 13 moves in the horizontal direction ...

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Abstract

A control device for a machine tool including a feed axis driving motor; a first power consumption calculating portion calculating power consumption of the feed axis driving motor; a second power consumption calculating portion calculating power consumption of equipment adapted to be operated by constant power; and a motor control portion determining a target time constant correlated with at least one of acceleration time and deceleration time of the feed axis driving motor, based on a summation of the power consumption calculated by the first power consumption calculating portion and the power consumption calculated by the second power consumption calculating portion, and controlling the feed axis driving motor based on the target time constant.

Description

technical field [0001] The present invention relates to a machine tool control device for controlling machine tools such as machining centers. Background technique [0002] There is known a device for suppressing power consumption when machining a workpiece. In the device described in Japanese Unexamined Patent Publication No. 6-161535 (JP6-161535A), the acceleration time of the servo motor for shaft feeding is extended to reduce the maximum value of the required current, thereby suppressing power consumption. [0003] However, in this type of machine tool, not only the motor for shaft feed is driven, but also a device that operates at a constant power, such as a hydraulic pump for supplying cutting fluid, is driven at the time of machining a workpiece. Therefore, like the device described in JP6-161535A, in the structure of extending the acceleration time of the servo motor for shaft feeding, the cycle time increases, the power consumption of the above-mentioned equipment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/416B23Q15/00H02P29/00
CPCG05B2219/34314G05B19/416
Inventor 岩下平辅置田肇手塚淳一
Owner FANUC LTD
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