JPS6135381Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electrolytic composite polishing tool that allows a sheet-like abrasive material to be easily attached without loosening or wrinkling.

Generally, in electrolytic composite polishing, which combines the polishing action of electrolysis and the abrasion action of an abrasive, when finishing the surface to be polished to a mirror finish, the abrasive is loosened,
If wrinkles etc. occur, the pressing force will be uneven,
Scratches occur, making it impossible to obtain a high-quality mirror surface.

This invention has been made with the above-mentioned points in mind, and next, this invention will be explained in detail with reference to drawings showing one embodiment thereof.

In the drawing, 1 is a rotating shaft rotated by a drive mechanism, 2 is a center hole of the rotating shaft 1, 3 is a mounting seat with a circular cross section formed at the lower end of the rotating shaft 1, and 4 is a mounting seat at the lower circumference of the mounting seat 3. A taper with a small diameter at the lower end is formed on the outer surface of the extended circular annular body, 5 is a disc-shaped electrode attached to the lower surface of the annular body, and a current-carrying portion serving as an electrode surface is provided on the lower surface; Insulating parts covered with an insulating material are alternately formed in a radial pattern. Reference numeral 6 indicates a plurality of through holes formed radially through the electrode 5; 7 indicates a liquid-permeable, insulating felt-like cushioning material adhered to the lower surface of the electrode 5; 8 indicates a liquid-permeable, insulating paper; It is a sheet-shaped abrasive material such as
The center portion of the cushioning material 7 is placed on the lower surface of the cushioning material 7.
9 is a circular ring whose inner diameter is slightly larger than the outer diameter of the circumferential surface of the annular body; 10 is a circular abutment portion formed protruding from the inner surface of ring 9; and 11 is formed below the abutment portion 10. It tapers inward, and the inclination of this taper 11 is slightly smaller than the inclination of the taper 4 of the mounting seat 3. Reference numeral 12 denotes a slit formed horizontally in a part of the ring 9, and a part of the ring 9 is divided into an upper piece 13 and a lower piece 14. It is divided into a left piece 16 and a right piece 17 by a notch 15. 18 is a notch formed near the end of the right piece 17; 19 is a screw threaded into the left piece 16 inserted from the notch 18 to the end face side of the right piece 17; It passes through the hole 2 and the through hole 6 of the electrode 5, and is supplied between the electrode 5 and the surface to be polished.

Next, the means for attaching the abrasive material 8 will be explained.

An abrasive material 8 is applied to the lower surface of the buffer material 7, and a ring 9 is inserted into the annular body from below. At this time,
The peripheral edge of the abrasive material 8 is bent upward by the inner surface of the ring 9 and lifted upward, and the contact portion 10 slides onto the taper 4 of the annular body through the abrasive material 8 and moves upward. The contact portion 10 is pressed against the taper 4 via the abrasive material 8. Then, the right piece 17 and the left piece 16 of the ring 9 are tightened with the screw 19 to fix the ring 9 to the annular body.

Therefore, the abrasive material 8 can be polymerized onto the electrode 5 via the buffer material 7 without loosening or wrinkles, and uniform tension can be applied to the abrasive material 8, thereby preventing the occurrence of twisting. This also prevents the polishing from occurring and allows the surface to be polished to have a mirror finish.

In addition, when removing the abrasive material 8 for replacement etc.,
By loosening the screw 19 and removing the ring 9,
Can be easily removed.

As described above, this invention consists of a rotating shaft in which a central hole through which electrolyte is supplied is formed, a circular mounting seat formed at the lower end of the rotating shaft, and a circular mounting seat extending from the lower circumferential surface of the mounting seat. a circular annular body having a tapered outer surface with a small diameter downward; a disc-shaped electrode attached to the lower surface of the annular body and having electrode surfaces and insulating parts alternately formed radially on the lower surface; a through hole through which an electrolytic solution flows; a liquid-permeable buffer material pasted on the lower surface of the electrode; a central portion of the buffer material is placed on the lower surface of the buffer material; a sheet-like abrasive material applied to the outer surface of the annular body, and a circular ring whose inner diameter is slightly larger than the outer diameter of the circumferential surface of the annular body;
a circular abutment part that is formed to protrude from the inner surface of the ring and is pressed against the taper through the peripheral edge of the abrasive material; and a circular contact part that is formed in a horizontal direction on a part of the ring and that connects a part of the ring to an upper piece. a slit divided into a lower piece; a notch formed vertically in the center of the upper piece and dividing the upper piece into a left piece and a right piece;
The electrolytic composite polishing tool includes a screw that is inserted through the right piece and screwed into the end face of the left piece to fasten the right and left pieces.

Therefore, according to this invention, a sheet-like abrasive material can be polymerized onto an electrode via a buffer material, and uniform tension is applied to the abrasive material, there is no loosening or wrinkles, and the attachment of the abrasive material is easy. It is easy to operate and has a very simple structure.

[Brief explanation of drawings]

The drawings show one embodiment of the electrolytic composite polishing tool of this invention, in which FIG. 1 is a plan view, FIG. 2 is a partially cutaway front view, and FIG. 3 is a partially left side view. 1...Rotating shaft, 3...Mounting seat, 4...Taper,
5...electrode, 7...buffer material, 8...abrasive material, 9...
...Ring, 10...Abutment part.

Claims (1)

[Scope of utility model registration request] A rotating shaft in which a center hole through which an electrolyte is supplied is formed, a circular mounting seat formed at the lower end of the rotating shaft, and a taper extending from the lower circumferential surface of the mounting seat and having a smaller diameter downwardly on the outer surface. A circular annular body is formed, a disc-shaped electrode is attached to the lower surface of the annular body and electrode surfaces and insulating parts are alternately formed in a radial manner on the lower surface, and an electrolytic solution is passed through the electrode. a liquid-permeable cushioning material affixed to the lower surface of the electrode, and a sheet-shaped sheet having a central portion placed on the lower surface of the cushioning material and a peripheral portion placed on the outer surface of the annular body. an abrasive, a circular ring whose inner diameter is slightly larger than the outer diameter of the circumferential surface of the annular body, and a circular abutment formed protruding from the inner surface of the ring and pressed against the taper through the circumferential edge of the abrasive. a slit formed horizontally in a part of the ring and dividing a part of the ring into an upper piece and a lower piece; and a slit formed vertically in the center of the upper piece to separate the upper piece into a left piece. An electrolytic composite polishing tool comprising a notch divided into a right piece, and a screw inserted through the right piece and screwed into the end face of the left piece to fasten the right piece and the left piece.