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

Electric discharge machining apparatus

一种放电加工、被加工物的技术，应用在放电加工装置领域，能够解决损害加工用电极高速的应答驱动性、加工精度降低、加工速度的高速性降低等问题，达到实现高速应答驱动性、重量轻量化的效果

Inactive Publication Date: 2007-03-28
MITSUBISHI ELECTRIC CORP
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In this electrical discharge machining device, the machining electrode is fixed on the end of the drive shaft that drives the machining electrode, but since the drive shaft doubles as the rotor of the motor, the total weight of the drive shaft is increased, and there is a high speed that damages the machining electrode. In the case of response driveability, there is a problem that the high speed of processing speed is reduced.
[0006] In addition, in order to obtain the high-speed response driving performance of the processing electrode, the attraction force of the electromagnet part of the magnetic bearing can be increased, that is, the current value supplied to the electromagnet part can be increased, but with this, the electromagnet part will be enlarged. Due to the heat generation, the electromagnetic drive device may expand due to the heat generation, and there is a problem that the processing accuracy is reduced.

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
  • Electric discharge machining apparatus
  • Electric discharge machining apparatus
  • Electric discharge machining apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] FIG. 1 is a configuration diagram of an electrical discharge machining apparatus according to Embodiment 1 of the present invention.

[0024] This electric discharge machining device is provided with: the electrode 1 for machining of the tip pointing to the workpiece 2 placed on the bottom surface of the machining tank 4 in which the oil 3 as the machining fluid is placed, and fixed to the electrode for machining via the electrode mounting part 6. 1 and the drive shaft 7 with an insulating plate 115 sandwiched in the middle, the electrode drive device 5 that drives the electrode 1 through the drive shaft 7, and the electrode drive device 5 are fixed on the electrode drive device 5 by an insulating plate 15 made of a ceramic disc. , the power supply device 16 of the electrode drive device 5, which is connected to the drive shaft 7 and in the Z-axis direction (up and down direction on the paper) as the axis direction of the drive shaft 7, and the Y-axis perpendicular to th...

Embodiment 2

[0048] Fig. 3 is a configuration diagram of an electric discharge machining device according to a second embodiment of the present invention.

[0049] In this embodiment, compared with the embodiment 1, except that the structure of the coupling 100 is different and the spring 21 of the embodiment 1 is not included, the other configurations are the same as those of the embodiment 1.

[0050] In this embodiment, in the coupling 150, a Z-direction slider 44 is installed on the upper end of the drive shaft 7, a Y-direction slider 45 is installed on the Z-direction slider 44, and the Y-direction slider 45 passes through the The X-direction slider 46 is attached to the middle circular plate portion 30 . The rotation shaft of the motor 20 is connected to the X-direction slider 46 .

[0051] In this coupling 150, compared with the first embodiment, the arrangement of the Z-direction slider 44 and the X-direction slider 46 is reversed.

[0052] In the case of the coupling 150, the to...

Embodiment 3

[0054] Fig. 4 is a configuration diagram of an electric discharge machining device according to a third embodiment of the present invention.

[0055] In this embodiment, a rotation position scale 151 is installed between the Z-direction slider 44 and the motor 20 so that its central axis coincides with the rotation axis of the motor 20 , and a rotation position scale reader 152 is installed on the motor 20 . Here, a rotation detection mechanism for detecting rotation information of the drive shaft 7 is constituted by the rotation position scale 151 and the rotation position scale reader 152 .

[0056] Other configurations are the same as those of the electric discharge machining device of the first embodiment.

[0057] In this embodiment, the current angle or angular velocity of the central axis of the drive shaft 7 is detected from the rotational position scale 151 by the rotational position scale reader 152 , and the detection signal is input to the control device 25 . Then...

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

An electric discharge machining apparatus has improved responsive drivability and improved machining speed. A tool electrode has a tip end directed toward a work piece, a voltage applied between the tool electrode and the work piece generating a discharge. A drive shaft is connected with the tool electrode. An electrode driving device has magnetic bearings for moving the drive shaft in three directions including a Z-axis direction which is an axial direction of the drive shaft, a Y-axis direction perpendicularly crossing the Z-axis direction, and an X-axis direction perpendicularly crossing the Y-axis direction and Z-axis direction, by supplying electric current to electromagnetic portions to control magnetic attraction. A movable coupling is connected with an end of the drive shaft and is movable in the three directions. An electric motor is connected with an end of the coupling for rotating the drive shaft through the coupling.

Description

[0001] This application is a divisional application of the application with the application number 2003101197678, the application date is December 5, 2003, and the application name is an electric discharge machining device. technical field [0002] The present invention relates to an electrical discharge machining device for machining by applying a voltage between a machining electrode and a workpiece to generate electrical discharge. Background technique [0003] As a conventional electrical discharge machining device, an electrode driving device using a magnetic bearing mechanism for driving an electrode for electrical discharge machining is known, and a device for moving the machining electrode in the X-axis, Y-axis, and Z-axis directions is known (for example, refer to International Publication No. 02 / 024389A1 booklet). [0004] Furthermore, in this device, a motor for rotationally driving the machining electrode is installed inside the electrode driving device. [0005...

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 Applications(China)
IPC IPC(8): B23H7/26B23H7/28B23H7/30B23H7/32
CPCB23H7/28B23H7/30B23H7/26B23H7/265
Inventor 三宅英孝今井祥人中川孝幸
Owner MITSUBISHI ELECTRIC CORP