JPS6048289B2 - Electrolytic buffing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention combines the anodic dissolution action of the metal to be polished by electrolysis and the polishing action of removing the passivated oxide film formed on the surface to be polished by using an abrasive. This invention relates to an electrolytic para-polishing device that finishes polished objects such as stainless steel to a mirror finish by preferentially electrolytically dissolving convexities on the surface of the object.

Next, this invention will be explained in detail with reference to drawings showing one embodiment thereof. FIG. 1 shows an electrolytic para-polishing apparatus of the present invention, in which 1 is a rotating shaft formed with an inner hole 2 for supplying an electrolytic solution to the electrolytic working surface, and 3 is a rotary shaft for forming a free pitcher. A spherical knob 4 is formed at the tip of the rotating shaft 1, and a spherical seat 5 is slidably fitted to the knob 3.
, a tool electrode mounting seat with a disc-shaped lower part, 6 a plurality of transmission pins provided radially around the outer periphery of the rotating shaft 1, and 7 a notch formed radially in the upper part of the mounting seat 4. , the transmission pin 6 is fitted with a gap, and during electrolytic para-polishing,
The rotational force of the rotating shaft 1 is transmitted to the tool electrode mounting seat 4 via the transmission pin 6, and the tip of the rotating shaft 1 is a spherical knob 3.
Because of this, the tool electrode mounting seat 4 can be positioned in any position along the spherical surface.

8 and 9 are seals J such as O rings provided to prevent the electrolyte from leaking from the sliding part between the knob 3 and the tool electrode mounting seat 4.
10 and 11 are bearings that support the rotating shaft 1 on the polishing device frame; 12 is a tool electrode having an electrolyte discharge port attached to the tool electrode mounting seat 4; An abrasive material such as Para or abrasive cloth is attached and is electrically insulated from the tool electrode 12.
The radially exposed electrodes and the abrasive material 13 form the tool electrode 12.
are formed alternately in the rotational direction of the tool electrodes 1 and
The area of the abrasive material 13 is 112 to 41 with respect to the total area of 2.
It is set so that the ratio is 5.

Reference numeral 14 indicates an object to be polished, which is opposed to the tool electrode 12 with a required gap below, 15 is a sheave formed on the outer periphery of the rotating shaft 1, 16 is a belt for transmitting rotational force, and 17 is a drive belt. Sheave, 18 is sheave 17, belt 16, sheave 1
The tool electrode 12 is connected to the rotary shaft 1 through the
A drive source such as an electric motor or an air motor that rotates at a speed of Qrpm, 19 is a brush connected to the cathode side of the power source and slidably in contact with the rotating shaft 1, and the anode side of the power source is connected to the object to be polished 14.

A rotary seal 20 is provided on the upper part of the rotating shaft 1, and the electrolyte is passed through the inner hole 2 of the rotating shaft 1 to the tool electrode 12.
and the object to be polished 14.

Next, the operation of the apparatus of the above embodiment will be explained. In the electrolytic buff polishing method, the best finished surface can be obtained when the surface to be polished and the tool electrode surface are parallel, the gap is 2 to 3 wt, and the pressing force is 0.1 to 0.4k91cr1.

As shown in FIG. 1, the polishing state is when the rotation axis 1 of the electrolytic buff polishing device is perpendicular to the surface to be polished of the object 14, that is, the surface to be polished and the surface of the tool electrode 12 are parallel to each other. If they are flat, there is no problem, but it is generally difficult to set the surface to be polished and the tool electrode surface parallel to each other, and moreover, the larger the area of the surface to be polished, the more likely they are to become non-parallel.

However, this. According to the apparatus of the invention, even when the surface to be polished is not perpendicular to the rotation axis 1, that is, is inclined as shown in FIG. 2, the knob 3 and the spherical seat 5 can
The tool electrode 12 is always parallel to the surface to be polished,
A uniform pressing crab acts on the entire surface of the tool electrode 12, and the gap becomes constant. Since stable electrolysis always acts on the polished surface, polishing can be carried out under ideal conditions. Further, since no local pressing force is applied, the durability of the abrasive material 13 attached to the tool electrode 12 is increased.
On the other hand, as shown in Fig. 3, when the tool electrode mounting seat 4' is fixed to the rotating shaft 1', the tool electrode 12' is in uneven contact with the surface to be polished, resulting in locally excessive Since a pressing force is applied and the gap in that area is too small, the current becomes excessive, which roughens the polished surface and reduces polishing efficiency. As described above, according to the electrolytic buff polishing apparatus of the present invention, among the passivated oxide films formed on the uneven parts of the surface of the anodic polished object by electrolytic action, the convex parts and the abrasive material are used to rub and remove the passivated oxide film, An electrolytic buff polishing device that finishes the surface of an object to be polished to a mirror finish includes a rotating shaft rotatably supported on a pedestal and rotated by a drive source, and a machining fluid supply formed on the rotating shaft through which an electrolytic solution flows. a spherical knob formed at the tip of the rotating shaft; a tool electrode mounting seat having a disc-shaped lower part and having a spherical seat slidably fitted to the knob; A transmission pin provided on the outer periphery of the shaft, a notch formed in the mounting seat in which the transmission pin is spaced with a gap, and a machining fluid discharge port that communicates with the inner hole attached to the mounting seat. By comprising a tool electrode, and electrodes that are electrically insulated and attached to the lower surface of the tool electrode and are exposed radially of the tool electrode and abrasive materials that are formed alternately in the rotational direction of the tool electrode, The spherical knob on the rotating shaft and the spherical seat on the tool electrode mounting seat allow the tool electrode on the mounting seat to rotate freely relative to the rotating shaft, ensuring that the tool electrode is always parallel to the surface to be polished, resulting in good polishing performance. In addition, the rotation of the rotating shaft can be transmitted to the mounting seat with a simple configuration using the transmission pin of the rotating shaft and the notch of the mounting seat, and furthermore, the rotating shaft can be freely rotated on the mount. Because it is supported, the load on the knob and spherical seat is small, and the structure is simple.Furthermore, the structure of the exposed tool electrode and the abrasive material allows efficient electrolytic buffing.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of one embodiment of the electrolytic buffing apparatus of the present invention, FIG. 2 is a cross-sectional view illustrating the construction state of the apparatus of the present invention, and FIG. 3 is a cross-sectional view explaining the construction state of another apparatus. There is a diagram. 1...rotating shaft, 2...inner hole, 3...
...Knob, 4...Tool electrode mounting seat, 5...
... Spherical seat, 8, 9 ... Seal material, 12.
...Tool electrode, 13...Abrasive material, 14.
...Object to be polished.

Claims (1)

[Claims] 1. An electrolytic buff polishing device that uses an abrasive to remove the convex portions of the passivated oxide film formed on the surface of the anodic polished object by electrolytic action, and finishes the surface of the polished object to a mirror finish. , a rotating shaft rotatably supported on a pedestal and rotated by a drive source; an inner hole for supplying machining fluid formed in the rotating shaft through which electrolyte flows; and a spherical shape formed at the tip of the rotating shaft. a knob, a tool electrode mounting seat having a disk-shaped lower part and having a spherical seat slidably fitted to the knob; a transmission pin provided on the outer periphery of the rotating shaft; A tool electrode having a notch in which the transmission pin is spaced with a gap, a machining fluid discharge port that is attached to the mounting seat and communicated with the inner hole, and a tool electrode that is electrically insulated and attached to the lower surface of the tool electrode. An electrolytic buff polishing device comprising: radially exposed electrodes of the tool electrode; and abrasive materials alternately formed in the rotational direction of the tool electrode.