Sanshin has been involved in the development of our own technologies based on the technologies and experiences in the manufacture of lapping film polishing machines through the partnership with lapping film manufacturers. As a result, we successfully researched and developed high-quality, high-reliability ultra-precision polishing systems in diversified mechatronics fields covering the electronic industry segments up to shafts and gears of automotive industry parts as technologies inherent in Japan, thus responding widely to user needs.

Intended Work Piece

Round surface

Magnetic head

VTR head

MR head

Concave-convex surface

Various concave-convex lens

Aspherical lens

Optical fiber ferrule

Automotive parts

Plain disc surface

Stamper for CD and DVD

Automotive parts

Semiconductors, silicon, device

Plain surface

PDP, LCD, and EL substrates

Thin-film and thick-film substrates

Multilayer substrates, buildup substrates

Ceramic substrates

LCD cell plate cleaners

Chamfering

LCD substrates

Various glass substrates

Silicon wafers

Multilayer substrates

Outer diameter

Shafts

Camshafts

Crankshafts

Small-diameter shafts

Inner diameter

Shafts with inner diameter up to 6 mm

Tapered inner diameter

Stepped inner diameter

Advantages of Lapping Film Polishing

1.Super-precision finish down to 0.00001mm is possible

2.Control of roughness is easy. The lapping film types are abundant.

3.Abrasive grains that ensure uniform finish

4.Lapping finishes according to applications are possible by selecting abrasive grain materials.

5.Fine deburring can be done along with processing of surface roughness.

6.The method can be applied for both dry and wet types. Although the dry type is employed in general, powder dust is seldom generated.

7.The processing environment is clean and compact. In addition, handling can be done speedily. Further, in case the dry type can be used, the method contributes to labor saving in the cleaning process.

8.The super-finish processing requires a certain level of skill, but inexperienced persons can do the work.

9.There is no burden of grinding compensation to deal with wear of grinding stone, and the replacement of lapping film is easy.