JPH06143134A - Electrolytic dressing grinding device - Google Patents

Abstract

PURPOSE:To work a grinding worked surface with high precision by uniformly carrying out the electrolytic dressing for a grinding wheel by installing a liquid reservoir for storing and supplying an electric conductive working liquid between a minus side electrode and the grinding wheel. CONSTITUTION:A structure for the uniform supply of an electric conductive working liquid and the discharge of the excessive working liquid 4 to the upper part is formed by forming a liquid reservoir 12 on an electrolytic electrode 3. The electrolytic dressing for a grinding wheel 1 can be carried out by allowing the electric conductive working liquid 4 to flow uniformly by the always uniform pressure from the liquid reservoir 12. Accordingly, the grinding worked surface can be worked with high precision, and the precision of the worked surface can be maintained for a long period.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for supplying a conductive working liquid for uniformly dressing a grindstone during grinding.

[0002]

2. Description of the Related Art In recent years, a mirror surface grinding method using a fine grain metal bond grindstone (straight) has been attracting attention as a practical ultra-precision grinding technology. Behind the establishment of this mirror surface grinding is the development of an electrolytic dressing method suitable for high-strength metal-bonded superabrasive grindstones such as cast iron fiber-bonded diamond grindstones. Therefore, by establishing a dressing based on electrolytic etching in an environment that does not use an electrolytic solution, an "electrolytic in-process dressing (Elid) grinding method" was developed to bring out the capabilities of metal-bonded superabrasive grindstones that were not recognized in the prior art. ing.

This method is a processing principle which enables stable use of the metal-bonded superabrasive grindstone by applying in-process electrolytic dressing with a weakly conductive grinding liquid.

A conventional electrolytic dressing grinding apparatus is shown in FIG.
Shown in (a) and (b). In the conventional method of supplying a conductive machining liquid for electrolytic dressing to a grindstone, a supply hole 5 is provided in the electric field electrode 3, and the conductive machining liquid 4 is supplied from the supply hole 5 to the grindstone 1.
Was being supplied to.

[0005]

As described above, in the method of forming a hole in the electric field electrode and supplying the conductive working liquid,
There is a drawback that the electroconductive machining liquid does not flow uniformly between the grindstone and the electrode, or the electroconductive machining liquid does not evenly flow, so that the electrolytic dressing of the grindstone is not uniformly performed. Therefore, there is a problem that the ground surface cannot be machined with high accuracy and the accuracy of the machined surface cannot be maintained for a long time.

The present invention is intended to solve the above problems by providing a liquid reservoir for accumulating and supplying a conductive machining liquid between a negative electrode and a grindstone in an electrolytic dressing grinding apparatus.

[0007]

The present invention is characterized in that an electrolytic dressing grinding apparatus is provided with a liquid reservoir for accumulating and supplying a conductive machining liquid between a negative electrode and a grindstone.

[0008]

EXAMPLE FIG. 1 shows an example of the present invention. As shown in the figure, the electrolytic reservoir 3 is provided with a liquid reservoir 12 so that the conductive working liquid 4 is evenly distributed.
In addition, a structure is provided in which the excess conductive processing liquid 4 is discharged to the upper part, so that the conductive processing liquid 4 is constantly flowed at a uniform pressure to perform electrolytic dressing of the grindstone 1, and the grinding surface is raised. It can be machined with high precision, and the precision of the machined surface can be maintained for a long time.

[0009]

As described above, according to the present invention, by forming a pool of the conductive working liquid in the electrode portion, the conductive working liquid is made to flow uniformly between the grindstone and the electrode, and the electrolytic dressing of the grindstone is performed. Can be performed uniformly, the ground surface can be processed with high accuracy, and the accuracy of the processed surface can be maintained for a long time.

[Brief description of drawings]

FIG. 1 is a side view (a) and a top view (b) showing an embodiment of the present invention.

FIG. 2 is a side view (a) and a top view (b) showing a conventional example.
Is.

[Explanation of symbols]

 1 Grindstone (Straight) 2 Working Surface 3 Electrolytic Electrode 4 Conductive Machining Liquid 5 Supply Hole 6 Table 7 Cover 8 Electrolytic Electrode 9 Brush 10 Spindle 11 Workpiece 12 Liquid Reservoir

Claims (1)

[Claims] 1. An electrolytic dressing grinding process for dressing a grindstone by using an electrolytic action, wherein a liquid reservoir is provided between the negative electrode and the grindstone to supply and store a conductive machining liquid. Dressing equipment