JPS63120038A - Working fluid temperature controller in wire-cut electric discharge machine - Google Patents

Abstract

PURPOSE:To prevent a difference between temperature in a working fluid (dielectric fluid) scattered on a work and a table and temperature in the work and the table from occurring, by setting up a temperature detector of the working fluid in a fluid receiving vessel which receives the working fluid in close proximity to the work. CONSTITUTION:The working fluid scattered on a work 26 and a table 24 is received by a fluid receiving vessel 32 surrounding this table 24, and the working fluid after use passes through a drain port 34 and recovered in a wastewater tank 10. Temperature in the working fluid influenced by a feeding pump 18, a pipe line and discharge heat is easily measurably by setting up a temperature detector 36 for the working fluid around the drain port 34 existing in a proximate part of the work 26 and the table 24 and coming into a stationary flow state. The detected water temperature of this detector 36 is inputted into a temperature controller 40, comparing it with ambient temperature to be measured by this temperature controller 40, whereby the working water pumped out of a fresh water tank 16 is cooled or heated so as to get rid of both temperature differences. This working water is put back to the fresh water tank 16 again, and this circulation is repeated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a temperature control device for a machining fluid in a wire-cut electric discharge machine, and particularly to a temperature control device in which a temperature sensor for the machining fluid is installed near a workpiece.

[Conventional technology and problems]

Conventionally, when controlling the temperature of the machining fluid in a wire-cut electrical discharge machine, the temperature of the fluid in the reservoir tank that stores the machining fluid in preparation for supplying the machining fluid is measured to compensate for the difference with the ambient temperature (room temperature). Pe〈A friend who performs cooling or heating.

However, the machining fluid in the storage tank passes through a pump and long piping before being supplied to the workpiece, and is also affected by discharge heat in the machining area, causing it to drip onto the workpiece and table. The temperature of the liquid is not necessarily the ambient temperature (that is, the temperature of the workpiece). If there is a difference between the temperature of the workpiece or table and the temperature of the machining fluid poured onto them, it will affect the machining accuracy of the workpiece.

Therefore, in order to solve this problem, the present invention provides a temperature control device so that the temperature of the machining liquid poured onto the workpiece and the table does not differ from the temperature of the workpiece and the table. With the goal.

[Means for solving problems]

In view of the above-mentioned objects of the invention, the present invention provides a wire-cut electrical discharge machining machine characterized in that a temperature sensor for machining fluid is installed in a liquid receiving container that receives the machining fluid in close proximity to a workpiece. Provides a processing fluid temperature control device for a machine.

[Effect]

If a temperature detector is installed in the liquid receiving container, the temperature of the machining liquid affected by the pump, piping, and discharge heat can be measured.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below based on embodiments shown in the accompanying drawings.

The processed water is collected after use, and the recovered processed water is fed from the wastewater tank 10 storing the recovered processed water to the paper filter 14 using the filter circuit pump 12, and the processed water thus filtered is transferred to the fresh water tank 16. is stored in This processing water is for supply.
The upper nozzle 20 surrounds the upper and lower guides that guide the electrical discharge machining wire 30 of the processing machine.
and the lower nozzle 22. In this way, machining water is sprayed from the upper nozzle 20 and the lower nozzle 22 between the wire 30 and the workpiece 26 placed on the table 24 of the machining machine via the workpiece stand 28 and the like.

The machining liquid thus poured onto the workpiece 26 and the table 24 is received in a water receiving container 32 surrounding the table 24. The processed water after use passes through the drain port 34 to the sewage tank 10.
will be collected. The temperature of the next processing water is affected by the supply ring 18, the piping, and the discharge heat. The temperature can be easily measured by installing a water temperature detector 36. The water temperature detected by the temperature detector 36 is input to a commercially available temperature control device 40, and compared with the ambient temperature measured by the temperature control device 40, water is pumped out from the fresh water tank 16 by a pump 38 so that there is no difference between the two temperatures. Cools processing water.

Or heat it. The processed water that has undergone this temperature control is returned to the fresh water tank 16 again. This cycle is repeated and work 2 is always
The temperature of the machining water poured onto the workpiece 6 and the table 24 is
6 and the table 24 (ambient temperature).

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the temperature of the machining fluid poured onto the workpiece or table is not the same as the temperature of the workpiece or table, causing deformation of the workpiece or table during machining. Therefore, the machining accuracy of the workpiece increases.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a machining fluid temperature control device in a wire-cut electric discharge machine according to the present invention together with a machining fluid piping path. 10... Sewage tank, 12... Filter circuit pump,
14...paper filter, 16...clean water tank, 18...
Supply pump, 20... Upper nozzle, 22... Lower nozzle, 24... Table, 26... Work, 30...
・Wire, 32... Water receiving container, 34... Drain port, 3
6...Water temperature detector, 38...Pump, 40...Temperature control device. Special 1 Figure

Claims (1)

[Claims] 1. A machining fluid temperature control device for a wire-cut electrical discharge machine, characterized in that a machining fluid temperature detector is installed in a liquid receiving container that receives the machining fluid in close proximity to a workpiece.