Unlock instant, AI-driven research and patent intelligence for your innovation.

Wire electrodischarge machining apparatus

A technology of electrical discharge machining and wire electrode, which is applied in the field of online electrode electrical discharge machining devices, can solve the problems of wire electrode disconnection detection delay and failure to detect wire electrode disconnection, etc., and achieve the effect of rapid detection

Active Publication Date: 2015-06-17
MITSUBISHI ELECTRIC CORP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the above-mentioned conventional technology is applied under the situation of performing the above-mentioned control, since the tension motor operates in a manner to maintain the rotation speed before the wire breakage after the wire breakage, the following problems will occur: If there is no speed difference between the two rotating elements, the wire breakage cannot be detected; or, it takes a long time until the rotation speed difference occurs, and the wire breakage detection is delayed.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wire electrodischarge machining apparatus
  • Wire electrodischarge machining apparatus
  • Wire electrodischarge machining apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0025] figure 1 It is a figure showing the structure of the wire electric discharge machining apparatus concerning Embodiment 1 of this invention. The wire electric discharge machining apparatus according to Embodiment 1 has: a wire electrode 1; a bobbin 3 for supplying the wire electrode 1; wire guide rollers 4, 5, 6, 7, and 10 arranged on a path along which the wire electrode 1 travels; The rollers 11a, 11b recover the wire electrode 1 at a prescribed speed; the recovery motor 12 drives the recovery roller 11a; the speed controller 15 controls the rotation speed of the recovery motor 12; Electrode 1 applies tension; pinch rollers 8a, 8b, which press the wire electrode 1 on the tension roller 9; tension motor 13, which drives the tension roller 9; encoder 14, which is installed on the tension motor 13; motor control A controller 16, which controls the tension motor 13; and a superior control device 17, which controls the speed controller 15 and the motor controller 16 as a s...

Embodiment approach 2

[0042] Figure 6 It is a figure showing the structure of the wire electric discharge machining apparatus of Embodiment 2. Here, the same reference numerals are assigned to the same constituent elements as those in Embodiment 1, and overlapping descriptions will be omitted.

[0043] Such as Figure 6 As shown, the wire discharge machining device according to Embodiment 2 has: wire electrode 1; bobbin 3; wire guide rollers 4, 5, 6, 7, 10; pinch rollers 8a, 8b; tension roller 9; recovery rollers 11a, 11b ; recovery motor 12; tension motor 13; encoder 14; speed controller 15; motor controller 16; device 21 a ; comparator 22 ; disconnection detection counter 23 ; and disconnection detection count threshold storage unit 24 .

[0044] That is, the wire electric discharge machining apparatus of Embodiment 2 adds a comparator 22 , a wire breakage detection counter 23 , and a wire breakage detection count threshold storage unit 24 to the structure of Embodiment 1. Line detection han...

Embodiment approach 3

[0055] Figure 9 It is a figure showing the structure of the wire electric discharge machining apparatus of Embodiment 3. Here, the same reference numerals are assigned to the same constituent elements as those in Embodiment 1, and overlapping descriptions will be omitted.

[0056] Such as Figure 9 As shown, the wire discharge machining device according to Embodiment 3 has: wire electrode 1; bobbin 3; wire guide rollers 4, 5, 6, 7, 10; pinch rollers 8a, 8b; tension roller 9; recovery rollers 11a, 11b ; recovery motor 12; tension motor 13; encoder 14; speed controller 15; motor controller 16; means 21b; and an averaging processing means 25.

[0057] That is, the configuration of the wire electric discharge machining apparatus according to Embodiment 3 is based on the configuration of Embodiment 1 by adding an averaging processing device 25 and changing the wire breakage detection process of the wire breakage detection device 21 .

[0058] Here, the averaging processing dev...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

In order to detect a wire breakage as soon as possible, the wire electrical discharge machining apparatus includes a speed fluctuation compensator that generates a speed fluctuation suppression command that is a speed compensation value that suppresses fluctuation of the rotational speed of the tension motor on the basis of the rotational speed of the tension motor and a breakage detecting device that detects a breakage of the wire electrode on the basis of a comparison of a preset breakage detection threshold and a speed fluctuation suppression command output from the speed fluctuation compensator.

Description

technical field [0001] The invention relates to a wire electrode electric discharge machining device. Background technique [0002] Currently, in the wire electric discharge machining apparatus, the machining conditions are adjusted to increase the machining energy in order to increase the machining speed. However, if the machining energy is increased, the wire is likely to be disconnected. In addition, there are cases where the wire is easily disconnected due to aging of elements of the wire traveling system. In addition, when machining a shape whose machining tends to become unstable, the wire electrode is also likely to break. After the wire breakage, if the machining power supply and the wire travel are not stopped immediately, electric discharge is likely to occur in a place other than the workpiece, which is dangerous. Therefore, it is necessary to install a wire breakage detection device on the wire discharge machining device. [0003] As a wire breakage detection d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23H7/10
CPCB23H7/104B23H7/14B23H7/10
Inventor 小野寺康雄中川孝幸
Owner MITSUBISHI ELECTRIC CORP