Prepare Mounting Surface; Position The Scale - Celera Motion MicroE ChipEncoder Series Installation Manual And Reference Manual

ChipEncoder Series
Installation Manual and Reference Guide
5.2

Prepare Mounting Surface

Perform the following steps prior to mounting the glass scales.
Step Action
1. Inspect the mounting surface for any machining irregularities. MicroE Systems recommends a
surface finish of better than 3.2 micrometers Ra.
2. MicroE Systems recommends a mounting surface flatness of 0.0001 inch/inch.
3. Thoroughly clean the scale mounting surface and reference edge using a cotton swab or lint-
free cloth dampened with isopropyl alcohol or acetone. Remove all dust and particles.
5.3

Position the Scale

Note: Use talc-free gloves or finger cots to handle the scales.
'Benching' the scale means aligning the scale by using benching pins. Refer to the applicable interface
drawing for datum edges.
Refer to the following drawing for this procedure:
End Benching
Pin
Step Action
1. Two benching pins are recommended on the long side of the scale and one at the end as shown
below. This is marked as Datum D on the interface drawing.
2. Position the benching pins in from both ends. 20% of the overall scale length is the recommended
distance from the edge of the scale.
3. Be sure the benching pins do not exceed the height of the scale (Z direction) to prevent
mechanical interference with the encoder.
IM-ChipEncoder-Series-Rev. 2
0.2L
Page 15
0.6L
L
Benching Pins
Linear Glass Scale Installation
0.2L
D
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