|
CALIBRATION PROCEDURE FOR THE TRUE CAL UNIT
|
|
- CALIBRATE 60° SETTING MASTER
The certified Setting Master must be to the tolerance specified and 60° angle to be central to the pins. (See fig. 1)
| Angle Setting Master Ref. No |
| Actual Measured Angle |
|
- SET THE TRUE CAL USING 60° SETTING
MASTER
To align Angle blocks A & B, clamp the Setting master using clamp screw with matched set of slip gauges. Release the blocks A & B and press against slip gauges to align with the calibrated master & clamp setting master in this position. See fig. 2
The setting master will ensure that the Angle Blocks will align to the central axis of the True Cal.
All 4 matched Slip blocks must be tested for contact.
When set correctly, Angle blocks A & B will align to the setting master within ± 00° 00' 05".
Straightness of the Angle Blocks to be within 0.002mm/25mm length at any position on the faces.
Straightness of the Angle Blocks to be within 0.002mm/25mm length at any position on the faces.
| True Cal Ref. No. |
| Parameter |
Side A |
Side B |
SliderAnvil |
| Straightness |
|
|
N /A |
| Squareness |
|
|
|
| A & B Angle |
|
Angle of sides A and B calibrated
to 60°± 00° 00' 40" (See fig. 5)
Systematic error of ±0.0028mm can be calculated over 25mm range. Over 12.5mm range the systematic error will be ±0.0014mm.
|
 |
| 010 |
22/04/07 |
INFOR. ISSUE |
M.S.S |
| ISSUE No. |
ISSUE. DATE |
MOCIFICATIONS |
APP.BY |
| INSTRUCTION SHEET REF 25002 |
1 0FF 1 |
|
