G0509G Precision Lathe Inspection Record
-3-
No.
Diagram of Measuring
Method
Allowed Tolerances
Typical
Measured
Value (mm)
Typical
Measured
Value (inch)
G8
Parallelism of center line of tailstock
spindle to longitudinal motion of carriage:
a. In vertical plane: 0.02mm (0.0007") in
100mm (3.937")
b. In horizontal plane: 0.015mm (0.0006")
in 100mm
0.007mm
0.005mm
0.00027"
0.0002"
G9
Parallelism of center line of tailstock
spindle hole to longitudinal motion of
carriage:
a. In vertical plane: 0.03mm (0.001") in
300mm (11.811")
b. In horizontal plane: 0.03mm (0.001") in
300mm (11.811")
0.015mm
0.01mm
0.0006"
0.0003"
G10
Difference in center height between
headstock and tailstock: 0.04mm (0.0015")
0.04mm
0.0015"
G11
Parallelism of spindle axis with
longitudinal movement of upper slide
0.015mm (0.0006") in 150mm (5.905")
0.01mm
0.0003"
G12
Cross slide alignment to face follow or
conave only on 160mm (6.300") diameter
0.02mm (0.0007")
0.008mm
0.0003"
G13
Lead screw parallel with ways
0 to 0.10mm horizontal (0.004"
0 to 0.10mm vertical (0.004")
0.05mm
0.07mm
0.0019"
0.0027"
G14
Lead screw alignment of half nut
0 to 0.10mm horizontal (0.004")
0 to 0.10mm vertical (0.004")
0.07mm
0.08mm
0.0027"
0.0031"
