JPS5969228A - Wire-cut electric discharge machine - Google Patents

Abstract

PURPOSE:To use a wire completely by marking at the flange section of a feed bobbin to know residual amount of electrode wire thereby anticipating the continuous workable time reliably. CONSTITUTION:A feed bobbin 14 is provided with a flange section 36 where the drum section is cylindrical and bobbin axial hole 40 is made along the central shaft. The diameter 42 of electrode wire to be wound around the feed bobbin 14 is marked on the rear face of flange section 36 while a plurality of positional lines 44 are marked with predetermined interval from inside to outside of the rear face of the flange section 36 to mark the weight 46 of electrode wire in the bobbin 14 and the residual length 48 of electroce wire when the outer end face of the electrode wire 18 wound around said bobbin 14 is positioned near each positioning line 44.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a wire-cut electric discharge machining apparatus, in particular, which can accurately determine the remaining amount of electrode wire in the electrode supply bobbin during machining, and determines the machining continuation time from the remaining amount of electrode wire in the bobbin. The present invention relates to a wire-cut electric discharge machining device that can be estimated.

In wire-cut electrical discharge machining equipment, the workpiece is usually placed on a table installed in a machining tank, and a power source is connected between the electrode wire that runs through the workpiece and the workpiece. Then, electrical discharge machining is performed while maintaining the electrical discharge interval, and the electrode wire is wound around a circular bobbin.
During processing, electrode wires are sequentially fed from the supply bobbin to the workpiece at a constant speed. However, in the past, whether or not there was enough electrode wire in the supply bobbin to finish machining the entire circumference of the workpiece was determined solely by the operator's intuition; If it was determined that the supply bobbin was insufficient to process the workpiece, it was replaced with a supply bobbin wrapped with a new, unused electrode wire. As a result, the amount of electrode wire remaining in the supply bobbin may be misjudged, resulting in a shortage of electrode wire during processing, forcing the processing to be stopped, or unused electrode wire may be produced, allowing the electrode wire to be used more effectively. There were some difficulties, such as not being able to do it.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to accurately determine the remaining amount of electrode wire in the supply bobbin, and determine the remaining amount of the electrode wire to determine the remaining amount of machining. An object of the present invention is to provide a wire-cut electrical discharge machining device that can be estimated.

In order to achieve the above object, the present invention provides a wire-cut electric discharge machining apparatus in which the amount of the electrode wire wound around the supply bobbin is adjusted to the flange portion of the supply bobbin of the electrode wire that runs through the workpiece. Based on the electrode wire diameter and electrode wire weight: A scale is engraved to indicate the remaining amount of electrode wire in the supply bobbin that is to be cut out, and the machining continuation time can be determined from the remaining amount of electrode wire in the supply bobbin sequentially during processing. It is characterized by being able to be estimated.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a schematic configuration diagram of a wire-cut electrical discharge machining apparatus, in which 1o is a bed, 12 is a column, and column 1
A wire feeding device is mounted on the column 2, 14 is an electrode wire supply bobbin, 16 is an electrode wire take-up bobbin, and the electrode wire 18 is guided by a guide roller 20 to the column 1.
It is stretched in the vertical direction of the front part of 2. The lower surface of the front end of the column 12 is provided to protrude downward, and the upper nozzle 22 is configured to be movable in the vertical direction. This upper nozzle 2
An arm 24 extending from the bottom of the column 12 opposite to the arm 24
Similarly, there is a lower nozzle 2 through which the electrode wire 18 is inserted and supported.
6 is attached. NC table 2 is 1° above the bed.
8 is installed, a processing tank 3o is placed on the NC table, and a table 34 on which a workpiece 32 is placed is fixed to the processing tank 3°. FIGS. 2 and 3 are detailed views of the electrode wire supply bobbin 14 of the present invention. It has a cylindrical shape, and a bobbin shaft hole 4o is bored along its central axis.

The characteristic feature of the present invention is that the remaining amount of electrode wire in the supply bobbin 14 is determined from the diameter of the electrode wire and the weight of the electrode wire based on the amount of the electrode wire wound around the flange portion 36 of the supply bobbin 14. For example, as shown in FIG. 3, the diameter 42 of the electrode wire to be wound around the supply bobbin 14 is stamped on the back surface of the flange portion 36 of the supply bobbin 14, and the diameter 42 of the electrode wire to be wound around the supply bobbin 14 is A plurality of position lines 44 are engraved at predetermined intervals from the inside to the outside of the back surface of 36, and each position line 4
Electrode wire 1 wound around supply bobbin 14 near 4
The weight 46 of the electrode wire in the supply bobbin 14 and the remaining distance 48 of the electrode wire when the outer end surface of the supply bobbin 8 is positioned are engraved.

In order to know the remaining amount of electrode wire 18 in the supply bobbin 14 sequentially during machining of a workpiece using an electric discharge machining apparatus equipped with the supply bobbin 14 configured as described above, it is necessary to It is only necessary to read the characters on the position line 44 on the back surface of the flange portion 36 where the outer end surface of the cut electrode wire 18 is located, and it is possible to accurately estimate the possible continuous machining time from the remaining amount of the electrode wire.

As described above, according to the present invention, it is possible to grasp the remaining amount of electrode wire in the supply bobbin sequentially during processing, etc., and accurately estimate the possible continuous processing time with the same supply bobbin without relying on intuition. This makes it possible to use the wire effectively without leaving anything unused, and there are effects such as ease of operation of the electrical discharge machining apparatus.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of an electrical discharge machining device, Fig. 2 is a front view of a supply bobbin according to the present invention, and Fig. 3 is a diagram showing A-A in Fig. 2.
FIG. In each figure, the same members are given the same reference numerals, 14 is a supply bobbin, 18 is an electrode wire, 32 is a workpiece, and 36 is a flange portion. Agent: Patent attorney Shin Kuzuno (and 1 other person) Figure 1 Figure 2 Commissioner of the Japan Patent Office 1, Indication of case Japanese Patent Application No. 180318-1888 2
, Title of the invention: Wire cutter (・Electric discharge machining device 3), Relationship to the amended case Patent applicant address: 2-2-3 Marunouchi, Chiyoda-ku, Tokyo Name (601) Jinhachi Katayama, Representative of Mitsubishi Electric Corporation Part 4 Agent Address: 2-2-3-5 Marunouchi, Chiyoda-ku, Tokyo, Amended Nori 1 Customer Drawing

Claims (1)

[Claims] (1) In a wire-cut electric discharge machining device, the flange of the supply bobbin of the electrode wire that is run through the workpiece is calculated based on the electrode wire diameter and electrode wire weight based on the amount of the electrode wire wound around the supply bobbin. A wire cutting device characterized in that a scale is engraved to indicate the remaining amount of electrode wire in the supply bobbin to be determined, so that it is possible to estimate the machining continuation time from the remaining amount of electrode wire in the supply bobbin sequentially during processing. Electrical discharge machining equipment.