JPH02167620A - Removing method for electrolytic forming body of electrochemical device - Google Patents

Abstract

PURPOSE:To improve working accuracy and the removing efficiency of an electrolytic forming body by removing the electrolytic forming body by giving jetstream to an electrolyte, excepting the working time by an electrochemical device, i.e. after an electrode apart from a work. CONSTITUTION:At the time when an electrode 2 is descended, a work current is passed to a work 1 by taking the work 1 as an anode(positive pole) and the electrode 2 as a cathode(negative pole) and the surfacing(surface finishing) of the work 1 is performed. At this time, no valve of a nozzle 4 is opened until the work current is stopped, i.e. until the working is completed and no jet is generated in an electrolyte 3 at the working time. When the working current is then stopped, the electrode 2 is ascended soon and separated from the work 1. In case of the gap enough for the jet coming in being caused by opening the space between the work 1 and electrode 2, the valve of the nozzle 4 is opened, the jet is given into the electrolyte 3 and the electrolytic forming body 5 formed during working by the impact stream thereof is removed from between the work 1 and electrode 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electrolytic product removal method for removing electrolytic products generated during processing in an electrolytic processing apparatus.

[Conventional technology]

Figure 3 is a cross-sectional view showing the main parts (processing parts) of an electrolytic processing apparatus such as an electrolytic finishing apparatus, etc., in which Figure 3 (a) is before processing, and Figure 3 (b) is during processing. , and FIG. 3(c) respectively show the state after processing. In the figure, 1 is a workpiece to be machined (workpiece), 2 is an electrode for applying a machining current to this workpiece l, 3 is an electrolytic solution filled between the workpiece 1 and electrode 2, and 4 is this electrolytic solution 3 a nozzle for giving a jet stream, 5
is an electrolytic product generated in the electrolytic solution 3 during processing.

In the electrolytic machining apparatus described above, the work 1 is used as an anode and the electrode 2 is used as a cathode, and a machining current (direct current) is passed through a small gap between the work 1 and the electrode 2 with an electrolytic solution 3 interposed therebetween. As a result, the surface of the workpiece 1 is electrolytically eluted, and desired processing such as surface finishing is performed. At this time, the electrolytically eluted metal becomes an electrolytic product 5, which impedes the processing effect of the workpiece 1. For this reason, it is necessary to discharge a jet electrolyte from the nozzle 4 to remove the electrolytic products 5 in the electrolyte 3.

Conventionally, the method for removing the electrolytic product 3 by applying a jet to the electrolytic solution 3 involves opening the valve of the nozzle 4 from the start of machining as shown in FIG. 3(b) to after the end of machining as shown in FIG. 3(C). A method is adopted in which the electrolytic products 5 are removed during and after processing.

[Problem to be solved by the invention]

In the conventional method for removing electrolytic products from electrolytic processing equipment,
As mentioned above, since electrolytic products are removed by applying a jet to the electrolytic solution from the time of machining to after machining, metal elution becomes uneven due to the liquid flow from the nozzle during machining, resulting in uneven machining. This has the problem of reducing machining accuracy, and depending on the position of the nozzle, the jet may not reach the target.In this case, the removal effect will be poor, so either increase the number of nozzles or reduce the jet. There was a problem in that the momentum had to be increased and the equipment became expensive.

The present invention was made in view of these problems, and provides a method for removing electrolytic products in an electrolytic processing apparatus, which has good processing accuracy, is inexpensive, and has an improved removal effect of electrolytic products. It is intended to.

[Means to solve the problem]

The method for removing electrolytic products in the electrolytic machining apparatus of the present invention is such that the electrolytic products are removed by applying a jet to the electrolytic solution other than during machining, and after the machining current is stopped, the electrode is removed from the machining process. A jet is applied to the electrolyte after it is separated from the object.

[Effect]

In the method for removing electrolytic products in an electrolytic processing apparatus of the present invention, since an electrolytic solution jet is applied at times other than during processing, a liquid flow that causes uneven processing is not generated, and the removal effect can be improved. .

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

Figure 1 is a cross section showing the main parts of the electrolytic processing equipment.
) shows the state during processing, and FIG. 1(b) shows the state after processing. In the figure, the same symbols as in Figure 3 indicate the same components, 1 is a workpiece, 2 is an electrode, 3 is an electrolyte, 4 is
is a nozzle, and 5 is an electrolytic product.

Next, the processing of the workpiece 1 and the removal operation of the electrolytic product 5 in the processing apparatus will be explained using the timing chart of FIG. Figure 2 shows the start (Start) and stop (Stop) of the machining current flowing through the workpiece 1, the rising (Up), descending (Down) and stopping (Stop) of the electrode 2, and the opening (ON) of the valve of the nozzle 4. The timings of closing (OFF) are shown respectively.

First, when the electrode 2 is lowered as shown in Figure 1 (a), the above-mentioned machining current is applied to the workpiece L with the workpiece 1 as the anode (positive) electrode and the electrode 2 as the cathode (negative) electrode, and the surface of the workpiece 1 is Perform processing (surface finishing).

At this time, as shown in Figure 2, until the machining current stops,
In other words, the valve of nozzle 4 will not open until the machining is completed.
No jet is generated in the electrolytic solution 3 during processing. Then, when the machining current stops, the electrode 2 immediately rises and separates from the workpiece 1.

Then, as shown in FIG. 1(b), when the gap between the workpiece 1 and the electrode 2 opens to create a gap large enough for the jet to enter, the valve of the nozzle 4 opens, and the jet is applied to the electrolyte 3, causing its impact. Electrolytic products 5 generated during machining are removed from between the workpiece 1 and the electrode 2 by the g flow.

Further, the electrode 2 stops when it rises to an appropriate height, then begins to descend again when the valve of the nozzle 4 is closed, and stops when it returns to the original processing position.

Then, wait until the electrolytic solution 3 has calmed down and become stable, and then apply the machining current again.

At this time, the jet is applied at times other than machining, and the valve of nozzle 4 is closed during machining, so there is no liquid flow that would cause uneven metal elution and machining, and machining accuracy becomes good. Further, since the valve of the nozzle 4 is opened after the electrode 2 is separated from the workpiece 1 after processing and there is a gap large enough for the jet to enter, the jet reaches sufficiently deep and the removal efficiency of the electrolytic products 5 is improved. Therefore, there is no need to change the number of nozzles 4 or the force of the jet stream, resulting in an inexpensive product.

〔Effect of the invention〕

As described above, according to the present invention, since a jet stream is applied to the electrolytic solution at times other than during machining, a liquid flow that causes uneven machining is not generated, and machining accuracy is good, and the electrolytic generation part can be removed. The effect is that efficiency is improved.

[Brief explanation of the drawing]

1 and 2 are diagrams showing one embodiment of the present invention, and FIGS. 1(a) and 2(b) are cross-sectional views showing the main parts of an electrolytic processing apparatus, and FIG. 2 is a diagram showing the apparatus shown in FIG. 1. FIG. 3(a) is a timing chart showing the machining current and the timing of the electric insertion and nozzle operation in FIG. (b) and (c) are sectional views showing a conventional example. 1... Work (workpiece) 2... Electrode 3... Electrolyte 4... Nozzle 5... Electrolytic product applicant Stanley Denki Co., Ltd.

Claims (2)

[Claims] (1) A method for removing electrolytic products generated during processing with an electrolytic processing device by applying a jet to the electrolytic solution, characterized in that the electrolytic products are removed by applying a jet to the electrolytic solution at a time other than the above-mentioned processing. A method for removing electrolytic products from electrolytic processing equipment. (2) The method for removing electrolytic products from an electrolytic machining apparatus according to claim 1, characterized in that after the machining current has stopped and the electrode has moved away from the workpiece, a jet is applied to the electrolytic solution.