KR20150104895A

KR20150104895A - cc

Info

Publication number: KR20150104895A
Application number: KR1020140026831A
Authority: KR
Inventors: 공석태
Original assignee: 공석태
Priority date: 2014-03-06
Filing date: 2014-03-06
Publication date: 2015-09-16

Abstract

In the cover window processing for mobile phones, watches, handsets, etc., glass can be heated to form a curved surface, but sapphire can not be curved, so it is mainly processed in a flat and convex lens shape through cutting and polishing processes.
Currently, sapphire wafers are manufactured by cutting ingot into square or circular shape, cutting it into thin flat wafers using a number of diamond wire saws with necessary thickness, and then polishing and polishing the wafers. In the case of curved surface processing, Grinding, grinding, and polishing are used to make the products, which waste the material and take a long time to process. Therefore, the price is too high to create demand.
In order to eliminate the waste of materials, cutting the surface with a diamond wire saw in a continuous stacked shape reduces the cost of material by reducing waste and shortening the processing time.
In this case, a known technique that is widely used for part processing by disposing a plurality of wafers after arranging a plurality of wafers in a cylindrical jig outer surface or inner surface with a predetermined curvature (R value) in a tapered shape is an outer surface polishing method, We want to make a curved window by polishing after polishing by polishing method
To be more specific,
Cutting sapphire with diamond wire saw to cut the outer surface of sapphire -> Cutting sapphire with tapered shape to cylindrical outer surface - Adhesion to outer surface of jig with wax -> Outside polishing of cylindrical sapphire with cylindrical outer diameter polishing method -> Sapphire outer surface polishing -> Heat Separation of sapphire from outer surface machining jig -> Cylindrical inner surface machining Jig with surface sapphire wax -> Circular inner sapphire polishing by inner grinding method -> Sapphire inner polishing attached to inner surface of cylinder -> Separating sapphire from jig using heat -> Cleaning -> Inspection is the method to produce the products in order. As a result, the sapphire inner and outer surfaces are polished by the planar grinding method after individually cutting them into hexahedron, so there is a lot of material waste. Although it took a lot of processing time, when working with the working method of the present invention, There is no waste of material cut to the curvature hameuroseo high productivity hameuroseo processed into a jig in the cylindrical outer surface or to a multiple bond with wax on the inner surface are known for machining mechanical parts generalized the cylindrical outer surface grinding, cylindrical internal grinding method.

Description

Sapphire curved window processing method of cylinder polishing method {cc}

Sapphire, mobile phone, watch, terminal, wafer

In the cover window processing for mobile phones, watches and handsets, glass can be curved by heat, but sapphire and quartz can not be formed by curved surface, so they are mainly processed by plane and convex lens shapes through cutting and polishing process have.

Currently, sapphire wafers are manufactured by cutting ingot into square or circular shape, cutting it into thin flat wafers using a number of diamond wire saws with necessary thickness, and then polishing and polishing the wafers. In the case of curved surface processing, Grinding, grinding, and polishing are used to make the products, which waste the material and take a long time to process. Therefore, the price is too high to create demand.

In order to eliminate the waste of materials, cutting the surface with a diamond wire saw in a continuous stacked shape reduces the cost of material by reducing waste and shortening the processing time.

In this case, a known technique that is widely used for part processing by disposing a plurality of wafers after arranging a plurality of wafers on a cylindrical jig outer surface or inner surface with a predetermined curvature (R value) in a tapered shape is an outer surface polishing method, And then polished after polishing by a polishing method to produce a curved window.

Cutting sapphire with diamond wire saw to cut the outer surface of sapphire -> Cutting sapphire with tapered shape to cylindrical outer surface - Adhesion to outer surface of jig with wax -> Outside polishing of cylindrical sapphire with cylindrical outer diameter polishing method -> Sapphire outer surface polishing -> Heat Separation of sapphire from outer surface machining jig -> Cylindrical inner surface machining Jig with surface sapphire wax -> Circular inner sapphire polishing by inner grinding method -> Sapphire inner polishing attached to inner surface of cylinder -> Separating sapphire from jig using heat -> Washing -> Inspection

At present, the sapphire inner surface and the outer surface are polished by the planar grinding method after individually cutting the sapphire into a hexagonal shape. Therefore, the material is wasted and the processing time is long because the surface is processed into the curved surface. However, Shaped curvature, there is no waste of material, and the wax is attached to the outer surface or the inner surface of the jig, so that productivity is improved by machining by the known and generalized cylindrical outer surface polishing and cylindrical inner surface polishing method in the machine parts processing field.

A) Sapphire glass perspective with processed window outline
B) Curved cutting process perspective view
C) Curved cut surface perspective view
D) A plurality of curved perspective views
(E) Perspective view of the cut surface
Bar) Cross section cut with curved surface (5-1,5-2,5-3) on cylindrical outer jig
G) Cross-section with a cylindrical inner jig (5-1,5-2,5-3) cut with a curved surface

A plurality of curved surfaces 5 are formed by cutting a sapphire 1 with a diamond wire saw to form the outer surface of the sapphire 1 and bonding the sapphire cut into a tile to the outer surface of the cylindrical outer surface working jig 6 with wax 5 -1,5-2,5-3) -> Polishing of outer surface of cylindrical sapphire by cylindrical polishing method -> Polishing of outer surface of sapphire -> Separation of sapphire processed in outer surface working jig by heat -> Working on cylindrical inner working jig (7) (5-1,5-2,5-3) -> Inner surface polishing of cylindrical sapphire by inner surface polishing method -> Inner surface polishing of sapphire bonded to inner surface of cylinder -> In case of heat, use jig (7) Separation of processed sapphire -> cleaning -> inspection to produce the products in order.

In this explanation, sapphire which is the most difficult to process is explicitly explained, but it is possible to process a curved window by applying the above method with quartz or other materials.

1. Sapphire material with an outer edge
2. Diamond wire saw cutting line
2-1. Diamond wire saw progression direction
3. Sapphire Cutting Material
4. Diamond wire saw section
4-1. Diamond wire saw cut section
5. Surface cutting material
5-1. Surface Cutting Material
5-2. Surface Cutting Material
5-3. Surface Cutting Material
6. Cylindrical polishing outer surface machining jig
7. Cylindrical grinding inner surface machining jig

Claims

How to process sapphire surface windows
A surface cutting step in which a diamond wire saw is piled up with a sapphire having an outer periphery;
Bonding the sapphire cut in a tile shape to the outer surface of the cylindrical outer surface working jig with wax;
Polishing the outer surface of the curved sapphire by a cylindrical outer polishing method; polishing;
Separating sapphire from the outer surface machining jig using heat;
Bonding the cylindrical inner surface working jig with a curved sapphire wax;
Polishing the inside surface of the curved sapphire by a cylindrical inner diameter polishing method;
Sapphire curved window processing method which consists of separating sapphire from jig when using heat