JPS5936345Y2 - Machining fluid supply nozzle device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a nozzle device that supplies machining fluid to an electrically machined part in electric discharge machining, electrolytic machining, electrolytic grinding, electrodeposition machining, etc.

When machining is performed by applying a machining action such as electric discharge or electrolysis to a minute gap between an electrode and a workpiece facing each other, machining debris is generated.

It is also accompanied by fever. Machining debris is removed and cleaned by the flow of machining fluid, and heat generation is cooled.

In addition, it is necessary to always provide a liquid with a constant conductivity and a liquid with a high ion concentration to the processing area for stable processing and high-speed processing.

The present invention provides a nozzle device that can suitably supply such machining fluid, and the nozzle is made of an insulating flexible material or an insulating-coated flexible material, and can be bent in any direction. The present invention is characterized in that the machining fluid can be supplied from the optimum direction, and means is provided for generating ultrasonic vibrations in the machining fluid jetted from the nozzle.

The present invention will be explained below by way of an example.

Figure 1 shows an example of practical use in electrical machining. 1 is a mechanical device, for example an electric discharge machine, in which a machining table 3 is provided in a tank 2 whose X-Y movement is controlled on a bed; The workpiece 4 is attached.

Reference numeral 5 denotes a processing head that supports the processing electrode 6 and provides vertical processing feed, for example, servo feed, to always maintain a constant gap facing the workpiece 4.

Although not shown, a machining pulse power source is provided in the gap between the electrode and the workpiece, and machining is performed by repeatedly generating pulse discharges while supplying machining fluid.

Reference numeral 7 denotes a machining fluid supply nozzle device, a detailed configuration diagram of which is shown in FIG. This supply liquid is distributed and jetted to a plurality of nozzles 11, 12, 13, and 14 protruding from the upper surface.

Each nozzle is made of an insulating flexible material or a flexible pipe coated with an insulating material, and is configured to be able to bend and spray in any direction or location.

Furthermore, since it is insulative, even if it comes into contact with electrodes, it will not cause short circuits, sparks, etc., and will not interfere with current flow.

15 is an oscillator for ultrasonic vibration, and each of the jet nozzles 11.
12. Apply ultrasonic vibration to the machining fluid before it is divided into 14 degrees.

16 is a gas mixing device that mixes gas into the machining fluid supplied from the pump through the supply port 10, which uses the flow rate of the machining fluid to form a negative pressure section, and supplies gas such as air from the surrounding area there. The structure is such that good mixing can be achieved by doing this.

Although not shown, 17 is an input vibe portion for the machining fluid supplied from the pump device, and is in communication with the supply port 10 of the nozzle device.

The nozzle device 7 is compact and removable, and can be arbitrarily set in the machining tank 2 near the machining gap where the electrode 6 and the workpiece 4 face each other. It can be attached to the stand 3 or, if the workpiece 4 is large, to the workpiece itself.

The entire nozzle device is mounted in a position close to such a processing part by setting a plurality of nozzles 11, 12, and 13, and this process can be done extremely easily.

The nozzles 11, 12, and 13 are made of flexible material and are bendable, and can be bent and set in any direction to supply machining liquid. The machining fluid can be jetted in the optimum direction by setting it so that the jet flows from the direction.

Furthermore, since the nozzles 11, 12, 13 are made of an insulating material, even if they come into contact with the electrode 6 or the like, they will not generate short circuits, sparks, etc., and will not interfere with current flow and processing.

The machining fluid jetted from each nozzle 11.12.13 is supplied from an external pump device, and the machining fluid supplied from the supply port 10 is divided into each nozzle 11.12.13 and jetted.

Of course, the jet direction can be changed by switching, opening and closing the nozzle.

The oscillator 15 generates 10 to 5 QKH to the jetting machining fluid.
Ultrasonic vibrations of about z are applied, and the jet flows through the processed part while undergoing ultrasonic vibrations.

Therefore, the effect of removing machining debris accompanying this liquid flow is enhanced, the cooling effect of the machining part is enhanced, and the flow rate of the machining fluid interposed in the machining gap is increased, increasing the exchange effect. Stable machining can be performed at high speed by constantly circulating new machining fluid to maintain constant electrical conductivity and constant ion concentration.

Also, a device 16 for mixing gas into the machining fluid supplied and distributed from the supply port.
When the required amount of gas (air) is mixed in and the gas mixed processing liquid is jetted from the nozzle 11, 12, 13, ultrasonic vibration is generated as the mixed gas contracts and expands, increasing the vibration effect and working. , enhances the flow effect of the machining fluid and enables stable high-speed machining.

Of course, it is possible to generate ultrasonic vibrations simply by mixing gas into the jet machining fluid using the gas mixing device 16, without using it together with the application of vibration by the oscillator 15, and a considerable effect can be expected.

As described above, the machining fluid supply nozzle of the present invention can arbitrarily change the direction of the machining fluid jet to be supplied to the machining section, and can jet the fluid from the best direction.Moreover, the machining fluid can be jetted while being ultrasonically vibrated. Therefore, the effect of removing machining debris is optimal and stable machining can be continued.

This is not limited to electric discharge machining, but also applies to electrolytic machining and electrolytic grinding. Also, in electrodeposition machining, it is possible to constantly supply machining fluid with high ion concentration into narrow gaps, so it can be used at high speeds. It can be processed and has the effect of forming a high-density electrodeposited layer.

[Brief explanation of drawings]

FIG. 1 is an embodiment of the present invention, and FIG. 2 is an enlarged detailed view of the main part. 2 is a processing tank, 3 is a processing table, 4 is a workpiece, 5 is a head, 6 is an electrode, 7 is a nozzle device, 8 is a main body, 9 is a magnetic chuck, 10 is a processing fluid supply port, 11, 12.13
．． 14 is a jet nozzle, 15 is an oscillator, 16 is a gas mixing device, and 17 is a machining liquid filling tube.

Claims (4)

[Scope of utility model registration request] (1) A nozzle body is removably installed near the current-carrying machining part between the tool electrode and the workpiece, and a jet nozzle protruding from the nozzle body supplies machining fluid supplied from a pump in one direction to the gap between the machining parts. Or, in a nozzle device that supplies jets from multiple directions, the jet nozzle is made of an insulating flexible material or a flexible material coated with an insulating material so that the jet nozzle can bend in any direction and supply the machining liquid from the optimal direction. A machining fluid supply nozzle device characterized in that the nozzle body is provided with means for applying ultrasonic vibration to the machining fluid jetted from the jet nozzle. (2) The machining fluid supply nozzle according to claim 1, which is a utility model registration, characterized in that an oscillator that applies ultrasonic vibrations to the machining fluid supplied to the jet nozzle is used as a means for generating ultrasonic vibrations. Device. (3) The machining fluid according to claim 1 of the utility model registration claim, which uses a gas mixing device that mixes gas into the machining fluid supplied to the jet nozzle as a means for generating ultrasonic vibrations. Supply nozzle device. (4) A utility model characterized in that, as a means for generating ultrasonic vibrations, an oscillator that applies ultrasonic vibrations to the machining fluid supplied to the jet nozzle and a gas mixing device that mixes gas into the machining fluid are used. A machining fluid supply nozzle device according to registered claim 1.