JPH0441167A - Both head surface grinding method for brake disk - Google Patents

Abstract

PURPOSE:To enable the grinding of the whole both side faces and grinding of a small diameter, by interposing the both side faces of a brake disk by a pair of drive rollers, and giving rotation to the brake disk by the drive roller. CONSTITUTION:The peripheral face of a brake disk 11 is supported freely rotatably by plural rollers 16 arranged at the outside of a pair of grindwheels 12, 13 and one roller 19 arranged at the inner side than the grinding parts of the grindwheels 12, 13 at the medium of the grindwheels 12, 13, after indexing the brake disk 11 between a pair of the grindwheels 12, 13 arranged in opposition at the upper and lower parts of a grinder. The grindwheels 12, 13 are then driven with their rotation as well as rotation is given to the brake disk 11 by a pair of drive rollers 21, 22 and the both faces of the brake disk 11 are simultaneously ground by the grindwheels 12, 13 by giving notches to the grindwheels 12, 13. The both side faces of the brake disk 11 can thus be ground over the whole face and also the grind of a small diameter can be performed as well.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for grinding both sides of a brake disc, which is a friction disk for performing a braking action in a disc brake, at the same time. It is something.

[Conventional technology]

Disc brakes, which generate braking force by pressing friction material (pads) against both sides of a disc (brake disc) that rotates together with the wheel, have stable effectiveness and do not reduce effectiveness due to braking from high speeds or repeated braking. (heat fued) is also rare, and is widely used in the front brakes of passenger cars and light trucks.

Conventionally, as a method for simultaneously grinding both sides of the brake disc in the above-mentioned disc brake, as shown in Figs. A pair of whetstones (2
) (3) After indexing by an indexing mechanism (not shown), the periphery of the mounting hole (1a) of the brake disc (1) is gripped by the clamping mechanism (4), and then clamped by a drive mechanism (not shown). Mechanism (4
) to rotate the brake disc (1), drive the grindstones (2) and (3) to rotate, and give the grindstones (2 and 3) a cut using a feed mechanism (not shown). As a result, both sides of the brake disc (1) are simultaneously ground using the grindstones (2) and (3).

In addition, as shown in FIGS. 5 and 6, the brake disc (1) is placed between a pair of grinding wheels (2) and (3), which are disposed opposite to each other on the left and right sides of a horizontal double-head surface grinder, by an indexing mechanism (not shown). After indexing, one drive roller (5) and two driven rollers (6) (6) index the circumferential surface of the brake disc (1) at three equal points on the outside of the grindstone (2) <3. The drive roller (5) is rotationally driven to give rotation to the brake disc (1), and the grindstones (2) and (3) are rotationally driven.
2) Both sides of the brake disc (1) are simultaneously ground using grindstones (2) and (3) by making a cut using a feed mechanism (not shown) in (3).

[Problems to be Solved by the Invention] By the way, each of the above conventional methods has the following problems. That is, in the method of FIGS. 3 and 4,
Since the clamp mechanism (4) grips and grinds the periphery of the mounting hole (1a) of the brake disc (1), it becomes impossible to grind the periphery, and both sides of the brake disc (1) are completely covered. There was a problem in that it was not possible to perform grinding. Furthermore, in the methods shown in FIGS. 5 and 6,
Although it is possible to grind both sides of the brake disc (1) over the entire surface, the circumferential surface of the brake disc (1) is ground by three rollers (5) (6) on the outside of the grinding wheels (2) (3).
(6), so there is no problem if the diameter of the brake disc (1) is large, but if the diameter of the brake disc (1) is small, as shown in Figure 6-2.
As shown by the dotted line, the driven rollers (6) (6) are connected to the grinding wheel (
2) It came to interfere with (3), and there was a limit to the diameter of the brake disc (1) that could be ground. Furthermore, the horizontal double-head surface grinder used in the conventional grinding method has low mechanical rigidity and cannot achieve precision in heavy grinding such as grinding both sides of the brake disc (1), and also requires a large installation space. There was a problem in that it was difficult to transport the index of the brake disc (1), etc.

The present invention was proposed in view of the above-mentioned problems, and an object of the present invention is to provide a double-sided surface grinding method for a brake disc that can grind both sides of the entire surface of the brake disc and also allows grinding of small diameters. That is.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention indexes a brake disc between a pair of grinding wheels arranged above and below to face each other in a vertical double-headed surface grinder, and places the circumferential surface of the brake disc on the outside of the pair of grinding wheels. The brake disc is rotatably supported by a plurality of arranged rollers and one roller arranged between the pair of grindstones and inside the grinding part of the grindstone, and both sides of the brake disc are held between a pair of drive rollers. The present invention provides a method for grinding a double-end surface of a brake disc, in which rotation is imparted to the brake disc by rotationally driving one or both of the pair of drive rollers.

[Effect]

According to the present invention, after a brake disc is inter-noxed between a pair of grinding wheels arranged above and below oppositely to each other in a vertical double-head surface grinding machine, a plurality of rollers arranged outside the pair of grinding stones and a plurality of rollers arranged on the outside of the pair of grinding stones The circumferential surface of the brake disc is rotatably supported by a roller placed between the grinding wheels and inside the grinding part of the grinding wheel, and a pair of drive rollers rotates the brake disc. By driving the grindstones to rotate and making a cut in the pair of grindstones, both surfaces of the brake disc are polished simultaneously by the pair of grindstones.

〔Example〕 Hereinafter, the present invention will be explained based on FIGS. 1 and 2.

The first [is a schematic plan view showing a specific configuration example for carrying out the double-sided surface grinding method for a brake disc according to the present invention,
Figure 2 is an enlarged sectional view taken along A-AiJI in Figure 1, where (11) is a brake disc, (12) (13)
are a pair of grinding wheels of a vertical double-headed surface grinder, which are mounted on a single main body frame (not shown) so as to be vertically opposed to each other. (14) is an index table that is rotatably driven in a plane perpendicular to the grinding wheel axis between the grinding wheels (12) (13), and has a plurality of pockets, for example, three pockets (15) (15) (15) on its periphery. ) are formed at equal intervals, and each pocket (15) (15) (1
5), two movable rollers (16) (1
6) is rotatably installed. (17) is a guide plate for the brake disc (11) stationary at the bottom of the index table (14).
It is formed in a substantially C-shape with a notched portion facing the outside, and an arc-shaped guide member (18) is provided protruding from the outer periphery except for a portion. (19) is a fixed roller placed between the grinding wheels (12) and (13) and inside the grinding part of the grinding wheels (12) and (13), and the guide plate (17) has a supporting plate thinner than the brake disc (11). It is rotatably attached via (20). (21) (22) is the information board (
A pair of drive rollers (21) are installed vertically opposite each other in the cutout portion of (17), each having a tapered shape. By sandwiching both side surfaces of the brake disc (11) with the drive roller (22) and rotating one or both of the upper and lower drive rollers (21) and (22) by a drive mechanism (not shown), the brake It is configured to give rotation to the disk (11).

Next, the brake disc (1
1) The double-head surface grinding method will be explained.

First, the brake disc (11) supplied onto the guide plate (17) is moved by the index table (14) to the movable roller (16) of the index table (14) (
16) and the guide member (18) of the guide plate (17) while being conveyed toward the grindstones (12) and (13).

Then, the brake disc (11) is transported to the notch of the guide plate (17) and indexed between the grinding wheels (12) and (13), and then the index table (14)
) movable roller (16) (16) and grindstone (12) (
The circumferential surface is supported at three points by a fixed roller (19) placed in the middle of the grinding wheel (13) and inside the grindstone portion.

After that, the upper drive roller (21) is lowered and the lower drive roller (22) is connected to the brake disc (11).
) while simultaneously holding both sides of the upper and lower drive rollers (
21) Rotate one or both of (22) to give rotation to the brake disc (11). Next, by rotationally driving the grindstones (12) and (13) and making a cut using a feed mechanism (not shown), both sides of the brake disc (11) are ground by the grindstones (12) and (13).
12) Grind at the same time using (13).

According to the method of the present invention, two movable rollers (16) (16) and a grindstone (12) (
The grinding wheel (12) is supported at three points by one fixed roller (19) placed inside the grinding part of the
13), so the brake disc (
The movable roller (16) (16) can be used as a grindstone (12) even if the diameter of the brake disc (11) becomes small.
Since it does not interfere with (13), it is possible to grind small diameters.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to grind both sides of a brake disc over the entire surface, and also to grind small diameters, and it is an object of the present invention to provide a method for grinding a double-sided surface of a brake disc, which is extremely practical. I can do it. In addition, since the vertical double-head surface grinder used in the method of the present invention has a single body frame, it has high mechanical rigidity and can achieve high precision even in heavy grinding such as grinding both sides of a brake disc. It does not require installation space, and it is easy to transport the brake disc index, etc., and it is used for grinding the brake disc.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing a specific configuration example for carrying out the double-sided surface grinding method for brake discs according to the present invention;
FIG. 2 is an enlarged sectional view taken along line A--A in FIG. 1. 3 and 4 are a schematic front view and a schematic side view for explaining a conventional brake disc grinding method. FIGS. 5 and 6 are a schematic front view and a schematic side view for explaining another conventional brake disc grinding method. (11) - Brake disc, (12) (13) - Grindstone, (14) - Index table, (16) - Movable roller, (17) - Guide plate, (18) - Guide member, (19) ) - Fixed roller, (21) (22L-m-drive roller.

Claims (1)

[Claims] (1) A brake disc is indexed between a pair of grinding wheels placed oppositely above and below a vertical double-head surface grinder, and the circumferential surface of the brake disc is indexed between a plurality of rollers placed outside the pair of grinding wheels. The brake disc is rotatably supported by a roller disposed between the pair of grindstones and inside the grinding part of the grindstone, and both sides of the brake disc are held between a pair of drive rollers. A method for grinding a double-end surface of a brake disc, characterized by imparting rotation to the brake disc by rotationally driving one or both of the discs.