JPS6033381A - Preparation of petri dish shaped metal cylinder - Google Patents

Abstract

PURPOSE:To obtain an extremely thin petri dish shaped metal cylinder, by applying thick plating to a circular metal plate, which is coaxially held between the end surfaces of two rolls and has the same diameter as each roll on the peripheral surface of the rolls so as to secure and integrate said metal plate and the rolls. CONSTITUTION:Two metal rolls 2 are formed by cutting a metal roll crosswise while a circular metal plate 3 is prepared by an etching method or a plating method and fixed between the rolls 2 by shafts 4 in a state held therebetween. In the next step, only a surface to be plated is left and the other surface is coated with varnish 6. In this state, plating is applied to the metal plate 3 in a plating liquid to form a plated metal 7 to the peripheral edge of said metal plate 3. Next, the shafts 4 are removed and metal parts are removed from the rolls 2 to obtain a petri dish shaped metal cylinder.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention manufactures a chalet-shaped metal part in which a cylindrical part and a disc-shaped part are integrated by a plating method and a combination of a plating method and a corrosion method (hereinafter referred to as a plating method, etc.). Regarding how to.

Chalet-shaped metal parts that have a thin cylindrical part with slits or patterns and a disc-shaped part are used for camera rotary shutters, drum-shaped encoders, circular slit plates, etc. Conventionally, such metal parts have been manufactured by hollowing out, for example, aluminum material by machining, and therefore it has been extremely difficult to create thin chalet-shaped metal parts.

The present invention solves the above-mentioned problems and makes it possible to manufacture extremely thin chalet-shaped metal parts by the following method. That is, in the method of the present invention, a circular metal plate made by a plating method or a corrosion method is coaxially sandwiched between the end faces of two rolls of the same diameter, and the circumferential surface of the rolls with the circular metal plate sandwiched therebetween is formed by the plating method. A metal cylinder is formed by fixing and integrating with a C circular metal plate on top.

Hereinafter, the process steps will be explained in order with reference to FIGS. 2 to 8.

First, a roll of metal, such as stainless steel, is manufactured (12
(Fig.) Next, thread the screw hole l into which the shaft will be screwed into the stainless steel roll. This metal roll is cut into rings to form two metal rolls 2 as shown in FIG.

Next, a circular metal plate 3 of a predetermined thickness is prepared using a corrosion method or a plating method.
(For example, the one shown in FIG. 4) is manufactured. This circular metal plate 3
may be made on the end face of the roll, or may be made separately). This circular metal plate 3 is placed between the rolls 20 which have been cut into rings (Fig. 5), and then the shaft 4 is inserted as shown in Fig. 6. Although the shaft 4 is shown as being threaded, the hole in the roll and the shaft 4 may be unthreaded and may have a smooth surface. A circular metal plate 3 is further inserted between the cut metal rolls 2 and 2' from the other side and fixed as shown in FIG. When the shaft 4 and the hole have smooth surfaces without threads, a separate tightening fixture is provided. Next, leave only the surface to be plated, and apply varnish, for example, 6
Cover with etc. The coating with varnish may be applied before operation, ie before clamping and fixing. Next, nickel plating is performed in a plating bath as shown in FIG. As shown in FIG. 9, a plated metal 7 is applied to the peripheral edge 3' of the circular metal plate 3 (d) to form a cylindrical metal part 7 integrally with the circular metal plate.Next, the shaft is removed and the metal parts are rolled. A chalet-shaped metal part shown in FIG. 1 is obtained.

By using the above method, extremely thin metal parts can be manufactured extremely easily, and various patterns can be freely applied to the cylindrical part. Further, as for the type of metal, any metal other than nickel can be used as long as it can be used as a plating bath. It is also possible to deform into a chalet-type shape other than the shape shown in the drawings.

[Brief explanation of drawings]

FIG. 1(a) is a side view of a seven-layer one-shaped metal part of the present invention;
FIG. 1(b) shows its front view. FIGS. 2(a) and 2(b) show a side view and a front view, respectively, of a state in which the metal roll is threaded. Figures 3(a) and (1)) are similar to Figures 2(a) and (b).
A diagram showing a Nometal roll cut into rounds. FIGS. 4(a) and 4(b) show a side view and a front view of the V'i circular metal plate. FIG. 5 shows a state in which a circular metal plate is sandwiched between rolls cut into rings. Figure 6 shows a diagram in which 7 Yafts are inserted into the state shown in Figure @5. FIG. 7 shows a state in which a rod with a threaded hole is screwed in from the other side, and an assembly of rolls, circular metal plates, and rolls arranged in this order is fixed by this rod and the shaft. FIG. 8 shows the state in which the assembly shown in FIG. 7 is coated with varnish 6 and then nickel plated. FIG. 9 is a partial enlarged view of FIG. 8, showing a state in which the circular metal plate and the cylindrical portion are integrated. 1 screw hole, 20-hole, 3 circular metal plate, 3' periphery of circular metal plate, 4 shaft, 5 shaft on the other side, 6 varnish, 7 plated metal (cylindrical part) Applicant Kenshodo Co., Ltd. Agent Person Sasai Yatabe -1 Sasai Katsube □ ) Imo 1 repair VJ11 sword 0) 1 Yu Tsumei 6 Figure

Claims (3)

[Claims] (1) A circular metal plate is coaxially sandwiched between the end faces of two rolls having the same diameter, and after coating the unplated portions of the roll surface with the circular metal plate sandwiched therebetween, a metal cylinder is formed. A method for manufacturing metal parts, which comprises forming a circular metal plate and a metal cylinder so that they are fixed and integrated by a plating method, and then removing the metal parts from the roll. (2) The method of item 1, wherein the circular metal plate is produced by plating or corrosion. (3) The method of item 1, in which the above two rolls are sliced into rings.