JPH01135456A - One-surface grinding device of duplex head surface grinder - Google Patents

Abstract

PURPOSE:To easily polish only one surface of a workpiece by oppositely arranging the edge surfaces of a grindstone and a pressing grindstone which is not used for grinding and arranging a transfer means for allowing a workpiece to pass through the edge surfaces of the both grindstones, in the state where the both surfaces corresponding to the edge surfaces of these grindstones are exposed. CONSTITUTION:A workpiece 6 is inserted into the pocket 7 of a carrier 5, in the state where th ground surface 6b unnecessary in grinding is set upwardly, and the upper and lower surfaces 6b and 6a of the workpiece 6 are exposed, and the workpiece 6 is inserted into between two revolving grindstones 2 and 4 during the revolution of the carrier 5. In this case, the nonground surface 6b as one surface of the workpiece 6 contacts the pressing surface 4a of a pressing grindstone 4, and is not ground, and only the ground surface 6a as the other surface of the workpiece 6 is ground by the grinding surface 2a of the grindstone 2. Therefore, the workpiece 6 whose one side only is ground is transported from between two grindstones 2 and 4 by the revolution of the carrier 5, and dropped from the pocket 7 of the carrier 5 by the gravity and discharged.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a single-sided grinding device for a double-headed surface grinder.

Conventional technology and its problems For example, when grinding only one side of an engine valve's ceramic shoe or steel hemispherical piece, conventionally,
The workpiece was fixed to a clamp jig so that the surface to be ground was exposed.

For this reason, it was necessary to attach and detach the workpieces by hand, which was cumbersome.

An object of the present invention is to provide a single-sided grinding device for a double-head surface grinder that solves the above problems.

Means for Solving the Problems In the single-sided grinding device for a double-head surface grinder according to the present invention, a grinding wheel and a holding wheel that does not perform grinding are arranged so that their end faces face each other, and the workpiece is separated into two A workpiece transfer means is provided for passing the workpiece between the end surfaces of the grindstones with both surfaces corresponding to the end surfaces of the grindstones exposed.

The working workpiece is passed between the end surfaces of the two grinding wheels with both surfaces corresponding to the end surfaces exposed, but one of the grinding wheels is a grinding wheel and the other is a holding wheel that does not perform grinding. Since it is a grindstone, only one side of the workpiece is ground. Therefore, the workpiece can be transported using the same carrier as when grinding both sides with a double-head surface grinder, and there is no need to use a clamp jig. Therefore, there is no need to manually attach and detach the workpiece, making the work easier.

Example The drawing shows the main parts of a chamber-shaft double-head surface grinder.

A grinding wheel (2) such as an SD (synthetic diamond) grinding wheel or a CBN (cubic boron nitride) grinding wheel is mounted on the upper end of the lower grinding wheel shaft (1), and a grinding wheel (2) such as an SD (synthetic diamond) grinding wheel or a CBN (cubic boron nitride) grinding wheel is mounted on the lower end of the upper grinding wheel shaft (3). A presser whetstone (4) having elasticity that does not perform grinding is attached to each of the grinding wheels (4), and the grinding surface (2a) at the upper end of the grinding whetstone (2)
) and the presser surface (4a) at the lower end of the presser whetstone (4) are opposed to each other with a predetermined distance therebetween. These two whetstones (2)
(4), a disc-shaped carrier (5) is mounted on a surface plate (
8). A plurality of pockets (holes) (7) for accommodating the workpiece (6) are formed in the carrier (5) at regular intervals in the circumferential direction.
A part of 5) is stuck between the two grindstones (2) and (4).

This double-head surface grinder is the same as a normal double-head surface grinder, except that one of the grindstones (2) and (4) is a holding grindstone (4) that does not perform grinding. Note that the arrow in the drawing (
A) is the rotation direction of the grindstone (2) (4) and carrier (5), arrow <8) is the input position of the workpiece (6) in the carrier (5), and arrow (C) is the workpiece in the carrier (5). The discharge positions of (6) are shown respectively.

One side of the workpiece (6) is a surface to be ground (6a) that requires grinding,
The other surface is a non-grinding surface (6b) that does not require grinding. The workpiece (6) is placed in the pocket (7) of the carrier (5) with the non-ground surface (6b) facing upwards, and both the top and bottom surfaces (G
b) Two grindstones (2) with (Ga) exposed (
4). At this time, the non-ground surface (Bb) is
Since it contacts the presser foot m (4a) of the presser whetstone (4), it is not ground, and only the surface to be ground (Ga>) is ground by the grinding surface (2a) of the grinding wheel (2).And,
The workpiece (6), which has been ground on one side, falls by gravity from the Pokeso I-(7) of the carrier (5) and is discharged.

The means for passing the workpiece (6) between the two grindstones (2) and (4) is not limited to that of the above embodiment, and can be modified as appropriate.

In the above embodiment, a double-head surface grinder with a chamber axis is shown, but the present invention can also be applied to a double-head surface grinder with a horizontal axis.

Effects of the Invention According to the single-sided grinding device for the double-head surface grinder of the present invention, since it is equipped with a grinding wheel and a holding grindstone that does not perform grinding, it is possible to grind only one side of the workpiece without using a clamping jig. can be ground. Therefore, there is no need to manually attach and detach the workpiece, and the work is easy.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of the main part of a single-sided grinding device of a chamber-shaft double-head surface grinder showing one embodiment of the present invention, and Fig. 2 is a view taken along the line ■-■ in Fig. 1. . (2)... Grinding wheel, (4)... Grinding wheel, (
5)...Carrier, (6)...Workpiece, (Oa)・
...Grinded surface, (6b)...Unground surface. that's all

Claims (1)

[Claims] A grinding wheel and a holding wheel that does not perform grinding are arranged so that their end surfaces face each other, and the workpiece is passed between the end surfaces of these grinding wheels with both surfaces corresponding to the end surfaces of the two grinding wheels exposed. A single-sided grinding device in a double-head surface grinding machine equipped with a workpiece transfer means.