JPH0265909A - Removal of rubber thin plate of steel plate having rubber thin plate - Google Patents

Abstract

PURPOSE:To surely remove only a rubber thin plate in a short time without damaging a steel plate by pressing an end mill whose edge surface cutter part is chamferred, onto the surface of the rubber thin plate of a steel plate applied with rubber thin plates which is formed by attaching each rubber thin plate onto the surface and revolving the end mill at a low speed. CONSTITUTION:A steel plate 1 applied with rubber thin plates is formed by attaching each rubber thin plate 3 onto the both surfaces of a steel plate 2, and an end mill 4 is formed by chamferring the top edge cutter part by an oil stone, and the included angle of the top edge cutting edge part forms an obtuse angle. The steel plate 1 having rubber thin plates is nipped between a work board 6 on a milling machine table 5 and a pressing plate 7 having a window 7a and fixed by a tightening tool 8. The top edge cutter edge part of the end mill 4 is lowered to contact the rubber thin plate 3 on the surface of the steel plate 1 applied with the rubber thin plate, and pressed by a pressing force in 1.2-1.8 times of the thickness of the rubber thin plate 3, and revolved in three times or so, and then only the rubber thin plate 3 can be surely removed in circular form in a short time without damaging the steel plate 2.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for removing a thin rubber plate from a steel plate with a thin rubber plate, and in particular, the present invention relates to a method for removing a thin rubber plate from a steel plate with a thin rubber plate, and in particular, a method for removing a rubber thin plate from a steel plate with a thin rubber plate. This invention relates to a thin plate removal method.

[Background of the invention]

Conventionally, it has been known to use a combination of a steel plate and a thin rubber plate as a gasket, but compared to the case where the steel plate and the rubber thin plate are used separately, it is better to bond them together with an adhesive or the like and use them as a single unit. By using the gasket, the assembly work when using the gasket can be simplified.

In addition, compared to the case where a gasket consisting of a steel plate and a thin rubber plate is assembled in one piece using an adhesive or the like on-site, the steel plate and the thin rubber plate are attached in advance at a separate location such as a factory using an adhesive or the like. By mass-producing an integrated product using the same method, it is possible to provide a large amount of products with a constant quality, improving production efficiency and improving quality.

When using a gasket in which a steel plate and a thin rubber plate are bonded together in advance as described above, if there is a part where an operating part such as a valve repeatedly contacts the surface of the gasket, the abutting part of the gasket should be Since the rubber thin plate part of the gasket is damaged and falls off, it becomes necessary to remove the rubber thin plate at the abutting part.In the present invention, we are considering developing a method for removing only the rubber thin plate of the steel plate with rubber thin plate used as the gasket. did.

Conventionally, there is no established method for removing only the thin rubber plate from a gasket made of a thin rubber plate attached to a steel plate as described above. Possible methods include rotating a whetstone to scrape off, and rotating an end mill to scrape off.

However, the manual method described above has problems such as low work efficiency and large variations in the quality of the scraped product.Additionally, the method of scraping with a whetstone causes the scraped rubber powder to scatter around the surrounding area. There are problems in that the work gets dirty and takes a long time.Furthermore, although the method using an end mill can be scraped off in a short time, it also has the problem of scraping the steel plate on the bottom of the thin rubber plate. However, neither method yielded satisfactory results.

An object of the present invention is to solve the above-mentioned problems and provide a method for removing a thin rubber plate from a steel plate with a thin rubber plate, which can reliably remove only the thin rubber plate in a short time without damaging the steel plate.

[Means to solve the problem]

In order to achieve the above object, the present invention has been developed by pressing the leading edge of an end mill with a chamfered edge on the surface of a thin rubber plate of a steel plate with a thin rubber plate on which rubber 'aFi is adhered to the surface of the steel plate. It has means for rotating this end mill at low speed.

[Effect]

By employing the above-mentioned means, the present invention makes it possible to reliably remove only the rubber thin plate without damaging the steel plate.

[Example〕 Embodiments of the present invention shown in the drawings will be described below.

FIG. 1 shows an end mill used in the method of removing a rubber thin plate from a steel plate with a rubber thin plate according to the present invention, FIG. 2 shows the steel plate with a rubber thin plate fixed to a milling machine table, and FIG. Each figure shows a process diagram of a method for removing a thin rubber plate from a steel plate with a thin rubber plate.

A steel plate with a rubber thin plate 1 used in the method of removing a rubber thin plate from a steel plate with a rubber thin plate according to the present invention, and rubber thin plates 3 on both sides of the steel plate 2.
The rubber thin plate attached steel plate 1 can be selected from various combinations of the thickness of the steel plate 2 and the thickness of the rubber plate 3.

The end mill 4 used in the method of removing a thin rubber plate from a steel plate with a thin rubber plate according to the present invention has a cutting edge portion at its tip chamfered with oilstone as shown in FIG. The cutting edge angle is obtuse compared to that of the previous one.

Note that the end mill 4 shown in FIGS. 1(a), 1(b), and 1(c) has two blades.

Then, as shown in FIG. 2, the above-mentioned steel plate l with a thin rubber plate is held between a work stand 6 on a milling machine table 5 and a work holding plate 7 provided with a window 7a, and then the whole is placed between a pair of It is fixed with a fastener 8.8, and the steel plate 1 with a thin rubber plate is processed in the following steps using the end mill 4 used in the present invention.

First, as shown in FIG. 3(a), with respect to the steel plate 1 with a thin rubber plate set on the milling machine table 5 as described above,
The tip end portion 4a of the end mill 4 is attached to a steel plate 1 with a thin rubber plate.
lower it to a position where it comes into contact with the thin rubber plate 3 on the surface.

Next, as shown in FIG. 3), the end mill 4 is rotated at low speed until the rubber thin plate 3 is removed, with the tip 4a of the end mill 4 pressed against the surface of the rubber thin plate attached steel plate 1 with a predetermined pressing force. do. End mill 4 required to remove this thin rubber plate 3
The number of rotations is approximately 3 rotations. In addition, the low rotational speed at this time is preferably 2 Orpm or less,
A speed of about 5 to 10 rpm is more preferable.

Furthermore, the amount by which the tip end portion 4a of the end mill 4 is pressed against the steel plate 1 with a thin rubber plate varies depending on the precision of the milling machine, the thickness of the thin rubber plate 3 of the steel plate l with a thin rubber plate, etc. It is preferably about 1.2 to 1.8 times the thickness, and more preferably about 1.3 to 1.6 times the thickness.

Finally, as shown in FIG. 3(C), after moving the end mill 4 upward away from the steel plate 1 with the rubber thin plate, the steel plate 1 with the rubber thin plate is removed from the milling machine table 5, and the rubber thin plate is removed. The work is completed.

In the method of removing the thin rubber plate 3 of the steel plate 1 with a thin rubber plate according to the present invention using the end mill 4 having a chamfered cutting edge as described above, the end mill 4 is rotated several times (3 turns) without damaging the steel plate 2. In a short time operation such as 100 degrees, only the thin rubber plate 3 attached to the upper surface of the rubber plate 3 can be reliably scraped off in a circular shape.

In addition, in the end mill 4 used in the present invention, the leading edge portion 4a is chamfered, but the blade portion on the outer periphery may or may not be chamfered, and the removal boundary of the thin rubber plate 3 to be scraped and removed can be formed with a clean border. In order to create a flat surface, it is better not to chamfer the outer edge of the blade.

In addition, when using an end mill 4 that does not have a chamfered cutting edge 4a, the thin rubber plate 3 of the steel plate 1 with a thin rubber plate can be removed, but the steel plate 2 on the lower surface will also be scraped, making it impossible to put it into practical use. It became impossible.

In addition, an end mill 4 with a chamfered tip 4a is used.
Orpm, high rotational speed such as 500rpm1,
If the thin rubber plate 3 is processed by contacting it with a steel plate l with a thin rubber plate that has been cut in advance, the thin rubber plate 3 cannot be completely removed and it takes a long time (1 to 2 minutes), which is also impractical. It wasn't.

Although the end mill 4 shown in the above embodiment has two blades, the number of blades is not limited to this, and may be four or more blades.

Furthermore, the steel plate with rubber yII plate is not limited to one in which thin rubber plates are attached to both sides of the steel plate, and the present invention can of course be applied to steel plates in which a thin rubber plate is attached to one side of the steel plate. It is.

〔Effect of the invention〕

In the present invention, as described above, the tip of an end mill having a chamfered edge is pressed against the thin rubber plate surface of a steel plate with a thin rubber plate attached to the surface of the steel plate, and then the end mill is rotated at a low speed. As a result, it has excellent effects such as being able to reliably remove only the rubber thin plate in a short time without damaging the steel plate of the steel plate with rubber thin plate.

[Brief explanation of the drawing]

FIGS. 1(a), (b), and (C) show an end mill used in the method for removing a rubber thin plate from a steel plate with a rubber thin plate according to the present invention,
Figure 1 (a) is a front view of the tip of the cutting edge;
b) is an enlarged explanatory view of the main parts of Fig. 1(a), Fig. 1(C) is a side view, Fig. 2 is a state diagram of a steel plate with a thin rubber plate fixed to a milling machine table, and Fig. 3(a) ( b) (C) is a process diagram of the method for removing a rubber thin plate from a steel plate with a rubber thin plate according to the present invention. 2... Steel plate 3... Rubber thin plate 4... End mill 4a... End cutting edge portion 5... Milling machine table 6... ...Work table 7... Work holding plate 7a... Window 8... Fastener 1... Steel plate with rubber thin plate. Tesnoi Kawarago ZJ I magic lantern 11 circles

Claims (1)

[Claims] (1) The leading edge of an end mill (4) with a chamfered edge on the surface of the thin rubber plate (3) of the steel plate (1) with a thin rubber plate (3) attached to the surface of the steel plate (2) (4
A method for removing a thin rubber plate from a steel plate with a thin rubber plate, which comprises rotating the end mill (4) at low speed after pressing a).