| Inspection item |
Measuring method |
Pictorial explanation |
Tolerance |
Value before overhaul |
Value after overhaul |
| Levelness of table top face |
Right and left directions |
Set the precision level on the top face of table and execute measurement. The maximum difference in the measurements at center and both ends shall be the measured value. |
 |
0.02/m |
0.014/m |
0.01/m |
| Forward and backward directions |
0.02/m |
0.025/m |
0.01/m |
| Straightness in table movement |
Right and left directions <on vertical plane> |
Set the precision level on the top face of table, move the table and execute measurement. The maximum difference in the readings at center and both ends shall be the measured value. |
 |
0.02/m |
0.02/m |
0.003/m |
| Forward and backward directions <on vertical plane> |
0.02/m |
0.025/m |
0.008/m |
| Parallelism of table in right-and-left motion, with the table top face being the reference |
Set the test indicator so that its probe touches the top face of table, move the table and execute measurement. The maximum difference in the readings of test indicator shall be the measured value. |
 |
0.01/m |
0.005
/
400 |
0.002
/
400 |
| Parallelism of table or grindstone head in forward-and-backward motion, with the table top face being the reference |
Set the test indicator so that its probe touches the top face of table, move the table or the grindstone and execute measurement. The maximum difference in the readings of test indicator shall be the measured value. |
 |
0.01
/
300 |
0.003
/
400 |
0.002
/
200 |
| Parallelism of table in right-and-left motion, with the table or the grindstone head being the reference |
Set a square rule on the top face of table in parallel to the right-and-left motion of table, set the test indicator so that its probe touches another side of square rule and move the table is moved forward and backward. The maximum difference in the readings of test indicator shall be the measured value. |
 |
0.02
/
300 |
0.023
/
200 |
0.003
/
200 |
| Run-out on the face of grindstone shaft top end cone |
Set the test indicator so that its probe touches the face of top end cone perpendicularly and execute measurement by turning the grindstone shaft. The maximum difference in the readings of test indicator shall be the measured value. |
 |
0.005 |
0.006 |
0.001 |
| Parallelism between grindstone axis and table top face |
Stand a rule with circular face and flat base on the top face of table and set a test indicator to the grindstone shaft so that its probe may touch the circular face of the rule. Then turn the test indicator and obtain differences in the readings of test indicator. The larger one shall be the measured value. |
 |
0.02
/
Turning
diameter300 |
0.065
/
300 |
0.001
/
300 |
| Perpendicularity of table in right-and-left motion, with the grindstone axis being the reference |
Set a square surface board on the top face of table in parallel to the right-and-left motion of table and measure. The maximum difference in the readings of test indicator shall be the measured value. |
 |
0.02
/
Turning
diameter300 |
0.014
/
300 |
0.002
/
300 |
| Perpendicularity of grindstone shaft head in up-and-down motion, with the table top face in forward-and-backward motion being the reference |
Stand a rule with circular face and flat base on the top face of table and set the test indicator to the grindstone shaft so that its probe touches the circular face of the rule. Then move the grindstone shaft head and obtain differences in the readings of test indicator. The larger one shall be the measured value. |
 |
0.01
/
100 |
0.04
/
100 |
0.005
/
100 |
Accuracy inspection table