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CNC device

A technology of numerical control device and control unit, applied in the direction of automatic control device, feeding device, digital control, etc., can solve problems such as interference and inability to replace tools, and achieve the effect of preventing interference and effective use

Inactive Publication Date: 2015-12-23
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, problems such as inability to replace the tool and interference between the tool and the workpiece sometimes arise.

Method used

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Experimental program
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Effect test

Embodiment approach 1

[0029] figure 1 It is a figure which shows the structure of the numerical control device concerning Embodiment 1 of this invention. As shown in the figure, the numerical control device 1 includes a program analysis unit 2 , a movement command determination unit 3 , an interpolation unit 4 , a tool replacement command output unit 5 , and a parameter storage unit 6 .

[0030] The parameter storage unit 6 stores in advance various parameters for controlling the machine tool by the numerical control device 1 . Here, mechanical structure information 17 is stored as one of the above parameters. The mechanical structure information 17 is information describing which axes are the axes related to the tool changing operation and the axes not related to the tool changing operation.

[0031] figure 2 It is a diagram showing an example of a mechanical configuration of a machine tool to be controlled by the numerical control device 1 . According to this example, the machine tool 100 in...

Embodiment approach 2

[0072] As described above, before executing the tool changing operation, the tool is moved to the tool changing position on the Z axis. When the tool reaches a preset position in the middle of moving to the tool changing position, which ensures that the tool does not interfere with the workpiece, the numerical control device according to Embodiment 2 starts positioning operations for axes not involved in the tool changing operation. Thereby, compared with the numerical control device 1 of Embodiment 1, machining time can be shortened further.

[0073] Figure 8 It is a figure which shows the structure of the numerical control device concerning Embodiment 2 of this invention. In addition, among the components included in the numerical control device 1 a according to the second embodiment, those having the same functions as those in the first embodiment are assigned the same names and reference numerals, and redundant descriptions are omitted.

[0074] The numerical control de...

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Abstract

In order to prevent the interference between the tool and the workpiece and effectively use the tool replacement time, the numerical control device is equipped with: a program analysis part, which reads the tool replacement command and the post-replacement positioning command from the machining program and outputs them respectively; the tool replacement command output part , which causes the machine tool to perform a tool change operation based on a tool change command; and a movement command determination section and an interpolation section, which wait for the post-change positioning command to position an axis related to the tool change operation if the positioning command is an axis component command for positioning an axis related to the tool change operation. The control of the axis based on the axis component command is started only after the tool change operation is completed. If the post-change positioning command is an axis component command for positioning an axis that is not related to the tool change action, they do not wait for the completion of the tool change action. The control of the axis based on the axis component command starts.

Description

technical field [0001] The present invention relates to a numerical control device for controlling a work machine capable of performing tool replacement. Background technique [0002] Currently, there is a numerical control device that enables a machine tool to perform machining while changing the tool for each type of machining by specifying a tool by the user based on a machining program. A series of operations for tool replacement includes movement to a position where tool replacement is possible, tool replacement, and movement to a position where machining starts. The time consumed by these series of operations for tool change (tool change time) is the time when the workpiece is not being processed. In the case of frequent tool change processing, the tool change time has a large impact on the machining time. Therefore, it is desired to shorten the tool replacement time. [0003] In this regard, Patent Document 1 discloses a technology that reads a machining program fir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/4155B23Q15/00
CPCG05B19/4155G05B2219/36361G05B19/19G05B2219/32105
Inventor 井内幸弘藤野大助小野俊郎
Owner MITSUBISHI ELECTRIC CORP