Cutting Accuracy - Hitachi C 10FSB Technical Data And Service Manual

11-11. Cutting Accuracy

Cut appropriate workpieces, measure the squareness with a square or other measuring devices and confirm that
accuracy is within the standards listed below.
[CAUTION] The test workpieces must be processed with a planer, and their rectangularity and surface
flatness must be checked carefully prior to cutting tests. Improper or inaccurate workpieces
are useless for checking the cutting accuracy of the machine.
(1) Press cutting
Cutting conditions
Cutting accuracy
Wood test piece
(2) Bevel cutting
Cutting conditions:
Test piece:
1
Yellow pine 30 mm (1-3/16") in height, 240 mm (8-7/16") in width
2
Saw blade: 255 mm (10") TCT saw blade, number of teeth 40 (Code No. 310878A)
3 Cutting time: 0˚ cutting
4 Measurement points:
Test piece:
1
Yellow pine 75 mm (2-31/32 ") square piece
[Test piece for 45˚ bevel cutting: 55 mm (2-5/32") in height, 60 mm (2-3/8") in width]
2 Saw blade: 255 mm (10 ") TCT saw blade, number of teeth 40 (Code No. 310878A)
3 Cutting time: 0˚cutting
Measurement points:
4
Square
Wood test piece
δ
10 sec.
• • • • • • • • • •
A
• • • • • • • • • • •
10 sec. 45˚ bevel cutting
• • • • • • • • • • •
Angle gauge
45˚
Fig. 81
45˚ bevel cutting
• • • • • • • • • •
Fence mounting surface
B
Cut surface
Turn table mounting surface
Square
--- 62 ---
All surfaces squarely planed.
15 sec.
• • • • • • • • • • •
Fence mounting surface
Cut surface
Turn table mounting surface
Square
Fig. 80
Accuracy
Angle
0˚ 0.12 maximum
45˚ 0.15 maximum
All surfaces squarely planed.
• • • • • • • • • •
15 sec.
Square
Fig. 82
δ (mm)