3-6 Change of horizontal spindle speed
Move lever (1)(Fig.7) to position
.
or
depending upon the spindle speed
range required,and move lever (2)(Fig.7) to the position of the particular speed reuqired.Speed
changes must not be made while the main motor is running. To facilitate changing spindle
speed,stop main motor by depressing horizontal spindle stop button (2)(Fig.6). Turn spindle
rotated direction switch (3)(Fig.7) to position 1 or 2 and then intermittently press the inching
button (4)(Fig.7), at the same time moving lever (2)(Fig.7) until the required gears are engaged.
It should be noted that the feed motor will automatically stop when the inching button is
operated.
Fig. 7
3-7 Table feed
3-7-1 Operation of manual feed
Operate longitudinal feed by hand wheel (1) (Fig.5), cross feed by habd wheel (2) (Fig. 5),
and vertical feed by hand lever (3) (Fig. 5).
If directional changing lever (4) (Fig. 5) at central frontof saddle is in neutral position,
longitudinal manual feed can not be operated.
Chart of rotation of manual feed hand wheel and moving direction of working table.
Hand wheel
Table
Rotation direction
(clockwise)
Displacement
One division
Scale collar
One revolution
Longitudinal Feed
Right hand
0.02 mm
(0.001 inch)
5mm
(0.2 inch)
Cross feed
Forward(go far from
operator)
0.02mm
(0.001 inch)
Vertical feed
Upward
0.01mm
(0.0005 inch)
1.2mm
(0.05 inch)
1
2
3
4
Chung Sing 12
VERSION: 2
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