JPH0425361A - Processing method for slant face of glass part - Google Patents

Abstract

PURPOSE:To obtain a glass part equipped with a polishing slant face having no dispersion over the whole area of the sticking machine inside, by rotating a work sticking board to which a glass part is fixed and a rotating brush in the reverse direction periodically each other and polishing the slant face while rocking the rotating brush. CONSTITUTION:A rotating brush 3 is descended as per an arrow mark and rotated like an arrow mark (b) while this brush 3 applying pressure P so as to press a glass part 4. At this time a work sticking board 5 is rotated as per an arrow mark (c) and becomes in reverse rotation each other with the rotating brush 3. This rotation is controlled by a timer and the reverse rotation is repeated as per arrow marks b', c' periodically. The brush 3 by this rotation movement polishes the slant face of the glass part 4 by the friction due to the elasticity of the tip thereof and the abrasive poured therein.

Description

[Detailed Description of the Invention] [Industrial Application Field] Traditionally, brushes have been widely used to finish the surface of hard brittle materials into a mirror-like state, but the present invention can be applied to the sloped portion of a sapphire cover glass for a wristwatch, for example. The present invention provides a processing method for finishing a matte finish to a mirror finish.

[Summary of the invention]

In the present invention, the workpiece is attached to a board with the sloped surface of the workpiece facing upward, and the brush discs that act on this disc are periodically rotated in opposite directions to each other. The finishing process is performed on multiple glass parts at the same time by applying a swinging motion to the glass parts.

[Conventional technology]

As shown in the front view of FIG. 2, the glass part 4 with the sloped part 4' is pasted on the pasting piece 10, and the sloped part 4' is attached to the surface of the rotating hake 112 while contacting the angle jig 11.
A mirror finish was achieved by press-welding the glass parts 4 and rotating the glass parts 4 from side to side by hand so that the entire circumference of each glass part 4 came into contact with each other.

[Problem to be solved by the invention]

The conventional method described above has a problem in that it is not suitable for mass production processing because it is a manual method. It is an object of the present invention to provide a method that eliminates these conventional drawbacks and enables mass production processing.

[Means to solve the problem]

In order to solve the above-mentioned problem, the present invention provides a processing method for finishing the surface of the sloped part of a plate-shaped glass component having a rough-processed sloped part on the upper surface into a mirror-like state.

For attaching workpieces with fixed glass parts, a plate and a rotating brush periodically rotate in opposite directions, and the rotating brush polishes the sloped surface while making an oscillating motion, making it possible to produce high-quality glass parts with high productivity. This is what we provide.

〔Example〕

Hereinafter, a sapphire cover glass for a wristwatch will be referred to as glass component 4 as an example of the liquefied product according to the embodiment of the present invention.
This will be explained with reference to the front view of FIG.

The glass part 4 has a canted slope like the slope part 4' of the glass part 4 shown in FIG. 2 by rough grinding before illustration. This ground slope portion 4' is still in a matte state, and the workpiece is attached to the board 5 with the surface where this slope portion 4' is facing upward.
A large number of them are scattered and fixed almost evenly. For attaching the workpiece, there is a rotating brush 3 facing the surface of the board 5, and the slope portion 4' is polished by the brush installed here. That is, the rotating brush 3 descends as shown by the arrow a, and while applying pressure P so that the brush presses the glass component 4, the rotating brush 3 rotates as shown by the arrow. At this time, the work pasting board 5 rotates as shown by arrow C, and rotates in the opposite direction to the rotating brush 3. This rotation is controlled by a timer (not shown), and reverse rotation is periodically repeated as indicated by arrows bI and cl.

The rotating brush polishes the sloped surface 4' of the glass component 4 by the friction caused by the elasticity of its tip and by the abrasive material 7 poured into the brush.

One of the features of the present invention is that, in addition to the above-described rotational movement, a mechanism within the head 1 causes the rotating brush 3 to reciprocate in the directions of arrows d and d'. Due to this I8 movement and the above-mentioned reverse rotation movement, the distribution of the abrasives staying between the glass parts 4 becomes uniform, and the abrasives pressed by the elasticity of the brushes are brought into contact with the slope portion 4'. Provides local polishing action. This effect is particularly effective for selectively polishing canted inclined surfaces, which are the object of the present invention, and sharp cut lines and cut surfaces can be obtained even after polishing. This can only be achieved by a polishing method that is different from the conventional polishing of curved surfaces, and its characteristics are that the plate and rotating brush repeatedly rotate in the opposite direction to each other when pasting the workpiece, and the rotating brush moves 11 times to apply the abrasive. It distributes it evenly and gives an even polishing effect to the slopes of a large number of glass parts.

The above explanation does not disclose details such as the identity of the abrasive, the number of rotations of each component, the pressing force, and the reversal period, but these selections can be made arbitrarily depending on the material of the workpiece, the conditions of the slope, the number of pieces, etc. It is a choice.

〔Effect of the invention〕

As explained above, according to the method of the present invention, the surface of the bevel cut of many glass parts at the same time becomes a high-quality mirror surface for both the cut line and the cut surface. This shows the effect of obtaining a glass component with a polished slope that is consistent over the entire area.

[Brief explanation of drawings]

FIG. 1 is a front view of an apparatus to which the method of the present invention is applied, and FIG. 2 is a front view showing conventional machining of a slope portion.・Head・Upper shaft・Rotating brush・Glass parts・Slope part・Passing is a board cent plate Applicant: Seiko Electronic Components Co., Ltd.

Claims (1)

[Claims] In a processing method for finishing the surface of the sloped part of a plate-shaped glass component having a rough-processed sloped part on the upper surface into a mirror-like state,
A method for machining a sloped surface of a glass component, characterized in that a workpiece pasting board to which a glass component is fixed and a rotary brush periodically rotate in opposite directions to each other, and the rotary brush polishes the sloped surface while making an oscillating motion.