Electric heating – Metal heating – Cutting or disintegrating
Patent
1990-06-22
1992-12-29
Evans, Geoffrey S.
Electric heating
Metal heating
Cutting or disintegrating
219 6912, B23H 110, B23H 702, B23H 736, B23H 1100
Patent
active
051754088
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an electrical discharge machine, and more particularly, to a wire-cut electrical discharge machine in which the operating state of a machining fluid cooler can be easily ascertained and adjusted.
BACKGROUND ART
In a wire-cut electrical discharge machine, a machining fluid is supplied from a machining fluid supplying system to the gap between a wire electrode and a workpiece to remove heat and chips produced by the electrical discharge machine. Also, the machining fluid is supplied to the workpiece, a workpiece table, and members surrounding the table to prevent temperature fluctuations of these elements, thereby preventing lowering of machining accuracy attributable to temperature fluctuations of those various elements.
If the machining fluid supplying system is designed so that the used machining fluid can be circulated for reuse after it is cleaned in a disposer, the machining fluid temperature gradually rises after the start of electrical discharge machining, so that the temperature of the workpiece and the like also rises. If the machining fluid temperature fluctuates in this manner, the machining speed also fluctuates, so that the machining accuracy, including surface roughness, is reduced. Conventionally, therefore, a device for cooling the machining fluid is provided to keep the machining fluid temperature constant.
A conventional machining fluid cooler, along with the aforesaid machining fluid disposer, is located on the rear side of a housing of the electrical discharge machine. Further, the machining fluid cooler comprises display sections for displaying various operation parameters of the machining fluid cooler, including the machining fluid temmperature and the amount of machining fluid supply, and operating sections having various operating elements, including power switches and various switches for adjusting the parameters. These display sections and operating sections are located on the rear side of the machine housing. Accordingly, an operator must take the trouble to get behind the machine housing in turning on the power or identifying or adjusting the various operation parameters of the machining fluid cooler. If the electrical discharge machining is started with any of the various operation parameters off or with the power switches and the like off, moreover, it sometimes may not be able to be noticed.
DISCLOSURE OF THE INVENTION
The object of the present invention is to provide an electrical discharge machine in which the operating state of a machining fluid cooler can be easily ascertained and adjusted.
In order to achieve the above object, an electrical discharge machine according to the present invention comprises an electrical discharge machine housing, and a machining fluid cooler including a display section for displaying at least one first operation parameter and an operating section for adjusting at least one second operation parameter, the display section and the operating section of the machining fluid cooler being located on the front side of the electrical discharge machine housing.
Since the display section and the operating section of the machining fluid cooler are located on the front side of the electrical discharge machine housing, as described above, the operating state of the machining fluid cooler can be easily ascertained and adjusted, so that electrical discharge machining can be safely effected under optimum conditions.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic perspective view showing a wire-cut electrical discharge machine according to one embodiment of the present invention;
FIG. 2 is a schematic top plan view of the electrical discharge machine of FIG. 1; and
FIG. 3 is a schematic front view showing display sections and operating sections of a machining fluid cooling device attached to the electrical discharge machine of FIG. 1.
BEST MODE OF CARRYING OUT THE INVENTION
Referring to FIGS. 1 and 2, a wire-cut electrical discharge machine 1 according to one embodiment of the present invent
REFERENCES:
patent: 4521661 (1985-06-01), Inoue
patent: 4667077 (1987-05-01), Goto
patent: 4685064 (1987-08-01), Kinoshita et al.
EDM Digest, pp. 4-5, Oct./1983, vol. 5, No. 5, advertisement by JAPAX.
EDM Digest, pp. 28-29, Feb. 1984, vol. 6, No. 1, advertisement by REMCOR.
Evans Geoffrey S.
Fanuc Ltd
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