JPS59101275A - Production of brake disc - Google Patents

Abstract

PURPOSE:To make an operation simple and highly efficient by irradiating laser light to the intermediate part on the side face of a ring from the outside, welding the same on the inside and heating the same in a furnace of the like thereby brazing the ring. CONSTITUTION:A plate 1 and a ring 2 are preliminarily superposed and positioned on each other, via a brazing material 3 interposed between the same. Laser light 5 is irradiated to the intermediate part 4 on the side face of the ring 2 and welding is accomplished on the inside position 4a thereof. The assembly is then conducted into a furnace to heat the entire part, then the material 3 melts and the plate 1 and the ring 2 are bound to each other in one body.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a brake disc mainly applied to two-wheeled motor vehicles.

Conventionally, the method of manufacturing this persimmon brake disc was to temporarily bond the disk plate and the pad sliding ring superimposed on each side of the disk plate to each other by welding, and then to integrally bond them together by brazing. In this case, the welding consists of T-work G or M-work G welding, and this is generally applied to the inner or outer periphery of the ring. In the case of the inner periphery, the appearance is likely to be spoiled by the welded part, and furthermore, in the case of the outer periphery,
Next, in order to remove the welded-in part, it is necessary to pre-fill the outer peripheral part in advance, which is disadvantageous in that it tends to impair economic efficiency and workability.

The object of the present invention is to provide a method that does not cause such inconveniences.After temporarily bonding a disk plate and a pad sliding ring superimposed on each side of the disk plate to each other by welding, Next, in a type in which the plate and the +) ring are integrally connected to each other by brazing, the plate and the +) ring are prepared in advance in a polymerized state through a brazing material, and then the side surface of the ring is A laser beam is irradiated to the middle part from the outside to weld the ring and the plate at the inside position, and then this is heated in a furnace or elsewhere and brazed with the brazing material. It is characterized by

An example of the uninvented fruit 1r+M is explained in the attached drawing (=J.

In the drawing, ) indicates a disk-shaped disk plate), (21 indicates a pad sliding ring made of stainless steel or other material superimposed on each side thereof, and the plate (1) and the ring (2)
These are first temporarily bonded to each other by welding, and then integrally bonded to each other by brazing.1 This point is not particularly different from conventional ones.

According to the invention, the plate (1) and the ring (2) are pre-waxed (3) in the middle as shown in Figure 1, for example.
), and then a laser beam is applied from the outside to the middle part of the side surface of the ring (2), 111, the middle part (4) between the outer circumferential edge and the inner circumferential edge. (5
) is irradiated and a weld is applied to its inner position (4a), so that the play (1) and the ring (2) are temporarily bonded to each other, which then For example, the solder material (3
) was once melted so that the plate (1) and the ring (2) were integrally bonded to each other. The middle part (4)
For example, as shown in Fig. 2, if the laser beam (5) is projected at multiple locations on the circumference, for example, three locations as shown in the figure, the surface will be Although a somewhat rough surface is obtained due to the melting, this is corrected by grinding or other processing performed on the surface of the ring (2) and there is no problem.

In this way, according to the present invention, the disk plate and the pad sliding ring superimposed on each side of the disk plate are welded together at their inner parts by a laser beam irradiated from the outside to the middle part of the side of the ring. It is temporarily tied together after being
It is possible to eliminate the above-mentioned disadvantages of the conventional type of T-work G or M-work G welding applied to the inner or outer peripheral edge of the ring, and the work is simple and easy since it is sufficient to heat it in a furnace or the like. It has the effect of increasing efficiency.

[Brief explanation of the drawing]

FIG. 1 is a cutaway side view of a part of the temporary binding process of a product in one example of the method of the present invention, and FIG. 2 is a front view of one example of the product. +l)...Disc plate (2)...Pad sliding contact ring (3)...Rolling oil (4)...
...Middle part (5) ...Laser beam (4a) ...Inner position

Claims (1)

[Claims] In a type in which a disk plate and a pad sliding ring superposed on each side thereof are temporarily bonded to each other by welding, and then integrally bonded to each other by brazing, the plate and the ring are prepared in advance in a polymerized state via a brazing material, and then a laser beam is irradiated from the outside to the middle part of the side surface of the ring to weld the ring and the plate at the inside position. A method for producing a brake disc, the method comprising: heating it in a furnace or other means to remove the wax with the brazing filler metal.