JPH05323U - Discharge cutting device - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the number of control units and drive motors to simplify the system. [Structure] A plurality of drive shafts are connected to one control unit 11 and one drive motor 12, an electrode is attached to each drive shaft, and multi-axis cutting is simultaneously performed by driving one drive motor 12. The number of drive motors is reduced to simplify the device.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric discharge cutting device used for cutting a diaphragm vane or the like of a turbine component.

[0002]

[Prior Art]

 FIG. 5 shows a schematic configuration of a conventional electric discharge cutting device. In the figure, 1 is a control unit, 2 is a drive motor, and 3 is an electrode. One electrode 3 is attached to one control unit 1 and driven by one drive motor 2 to perform electric discharge machining for dividing an annular work W such as a diaphragm vane.

[0003]

[Problems to be solved by the device]

 Since the conventional electric discharge cutting device shown in FIG. 5 has one each of the control unit 1, the drive motor 2 and the electrode 3, when cutting an annular work W such as a diaphragm vane having 10 cutting points C. It was necessary to cut one place at a time, or to prepare the control unit 1, the drive motor 2, and the electrode 3 for each 10 pieces. Further, an indexing device and an indexing work for the cut portion of the annular work W with respect to the electrode 3 are required.

[0004]

[Means for Solving the Problems]

 The structure of the present invention for solving the above-mentioned problems is an electric discharge cutting device including a control unit, a drive motor, and an electrode, in which a plurality of drive shafts are connected to one control unit and one drive motor, and each drive shaft is connected. It is characterized in that electrodes are attached to the machine and multi-axis simultaneous machining is performed by driving one drive motor.

[0005]

[Action]

 One drive motor drives multiple drive shafts simultaneously, and multiple electrodes simultaneously perform electrical discharge cutting.

[0006]

【Example】

 FIG. 1 is a perspective view showing the overall construction of an electric discharge cutting device according to an embodiment of the present invention, FIG. 2 is an enlarged view of an electrode mounting portion, FIG. 3 is a plan view of a driving portion, and FIG. IV-IV line arrow is shown.

In the drawing, 11 is a control unit, 12 is a drive motor, 13 is an electrode, 14 is a bevel gear, 15 is a universal joint, 16 is a drive shaft a for the inner wheel, 17 is a drive shaft b for the outer wheel, and 18 is A clutch, 19 is a work table, 20 is a bed, and 21 is a column. Ten electrodes 13 are attached to one control unit 1 in a radial manner via a drive shaft a16 and a drive shaft b17, and one electrode 13 is simultaneously driven by one drive motor 12. Further, the work table 19 is made to enter and exit just below the radiation center P.

Ten electrodes 3 are drawn from the control unit 11, and the electrodes 13 are attached to each drive shaft a16 and drive shaft b17. The drive shaft a16 is radially divided from the drive motor 12 in eight directions by using the bevel gear 14 and the self-joint 15, and the eight shafts are simultaneously driven. The drive shaft b17 for cutting the outer ring is meshed with the drive shaft a16 for cutting the inner ring by the clutch 18, so that the outer ring and the inner ring can be simultaneously driven for 10 shafts. Further, the drive shaft b17 for cutting the outer ring can be positioned for each ring width of the annular work W (diaphragm stationary blade) by disengaging the clutch 18.

The discharge cutting device is supported by a column 21, and the drive shafts a16 and b17 are supported rotatably in a horizontal / radial direction about a radial center P. A scroll chuck is provided at the center of the work table 19, and the annular work W is gripped by the scroll chuck. By sliding the work table 19 on the bed 20, the center of the scroll chuck can be moved in and out directly below the radial center P.

The discharge cutting device described above has a structure in which one control unit 1 and one drive motor 2 can simultaneously cut 10 axes in the radiation direction, so that the number of control units 1 and drive motors 2 can be reduced to the conventional one. It can be reduced to / 10. Further, since the center of the scroll chuck of the work table 19 is moved to just below the radial center P, a device and work for indexing a cut point are unnecessary, and setup such as slinging and mounting is easy. I can do it. Further, since the clutch 18 and the drive shaft b17 for cutting the outer ring are provided, even if the total width of the inner ring and the outer ring of the annular work W exceeds the width of the electrode 3, the inner ring and the outer ring can be simultaneously disconnected without changeover. Becomes

[0011]

[Effect of the device]

 The electric discharge cutting device of the present invention connects a plurality of drive shafts to one control unit and one drive motor, attaches electrodes to each drive shaft, and performs multi-axis simultaneous cutting by driving one drive motor. As a result, the number of control units and drive motors can be reduced to simplify the equipment and make setup changes easier.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a discharge cutting device according to an embodiment of the present invention.

FIG. 2 is an enlarged view of an electrode mounting portion.

FIG. 3 is a plan view of a drive unit.

FIG. 4 is a view taken along the line IV-IV in FIG.

FIG. 5 is a schematic configuration diagram of a conventional discharge cutting device.

[Explanation of symbols]

 11 Control Unit 12 Drive Motor 13 Electrode 14 Bevel Gear 15 Universal Joint 16 Drive Shaft a 17 Drive Shaft b 18 Clutch 19 Work Table 20 Bed 21 Column

Claims (1)

Claims for utility model registration: 1. A discharge cutting device comprising a control unit, a drive motor, and an electrode.
A discharge cutting device characterized in that a plurality of drive shafts are connected to one drive motor, electrodes are attached to each drive shaft, and multi-axis simultaneous machining is performed by driving one drive motor.