Automatic ELG Lapping System

This equipment laps all each MR head of row-bar into regulation resistance by minute elastic modification (seven points) of the bar, measuring ELG resister value, in the ABS surface(surfacing side) lapping process.

Characteristic

Precision one side lapping machine

Facing unit true direct degree : 1μm or less
Field deflection accuracy of lapping surface : 1μm or less

Rocking mechanism

Capable of rocking/rocking like character "8".
Rocking mechanism evacuates automatically from the lapping surface after lapping process end.

Base unit

Minute elastic modification function by air pressure using air cylinder.
Air pressure can be controlled variously by electrical controlled valve regulator.

Wiper unit

Wiping function for compulsive removal of slurry.

ELG resister measurment

2 msec or less per one head.

Bending control

Control processed while correcting curvature of row-bar pasted on a lapping jig. (the jig is bent.)

• The jig is designed so that each bending point might interfere mutually.
• Each bending point is bended (push and pull) by air cylinder and rink mechanism.
• Bending is controlled for minimizing the disparsion of resistance, monitoring all ELG(Electric Lapping Guide) resistance in row-bar.
• Processing accuracy MRh(ρ) = 10nm or less

Notes : MRh (MR height)
The converted value of ELG resistance into the thickness direction size of row-bar.

Others

2 row-bars can be lapped simultaneously by 2 heads.
Freely choose and select a combination of various processing parameters.

Catalog

PDF Automatic ELG Lapping System(83KB / elg9.pdf)

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