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CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
7.3. spindle speed change conTrol
The 12 steps of the spindle speed are accomplished by a gear driving system and 2-speed motor (see figureE).
To change the speed, first stop the motor.
Turn the speed change handles (6 and 7) to the desired position. Then turn the switch (8) to position 1 or 2. The
speed for forward is selected. Turn the switch to position “R” for the same speed in reverse running.
7.4. spindle feed operaTion
Turn the handle (4) counter clockwise for hand feed of the spindle during drilling.
7.5. spindle reseT
The balance and reset of the spindle are accomplished by the coiled spring. The force of spindle balance can be
adjusted by loosening the screw and turning the angle of the spring housing.
7.6. Tool unloading
See gure A
Pull the tool unloading lever out. Grasp the tool with one hand, turn hand feed lever (4) with another hand. The
spindle rises rapidly. The tool shank knocks into the ram on the end of the spline shaft. The tool is pushed out.
Important remarks
Never pull out the tool unloading knob (10) while the machine is running. It is dangerous because when the
spindle rises and the ram on the end of the spline shaft knocks into the tool taper shaft, the tool will drop.
In case the tool taper shank fits in the spindle bore too tightly, turn the hand feed lever (4) quickly and make the
tool taper shank knock into the ram three times. If the tool still does not come out, extend the spindle sleeve and
use a tool unloading wedge to knock down the tool.
7.7. conTrol of The feed depTh
The cutting depth is set by moving the scale nut on the scale rod. In batch production, the cutting depth is
controlled by loosening screw (3), turning the knob (2) and moving the scale nut to the desired depth.
7.8. work Table brackeT
By loosening lever (13) and turning lift handle (1) the work table bracket can be elevated to its desired height. It
can also swing around the column.
By loosening lever (20) the work table can be rotated on the center at ± 180°.
If you loosen the 4 nuts M14 on the bracket and remove the roller pin, the work table can be tilted ± 45°. To reset
the bracket, readjust the table with accuracy conform G5 and push the roller pin back in.
8. lubricaTion
Picture F – Lubrication
8.1. lubricaTion meThods
Grease lubricating
Hand oiling
8.1.1 grease lubricaTing
The gears in the gear box are lubricated by no. 3 lithium grease. For new machines, after 6 months of running, the
lubricant must be cleaned and changed. Subsequently, grease must be replaced once per year.
Table 3
Place of
lubrication
Description Method Lubricant Cycle
1 Main driving shaft I bearing Oil gun Lithium grease no. 3 Every 3 months
2 Main driving shaft II bearing Oil gun Lithium grease no. 3 Every 3 months
3 Main driving shaft III bearing Oil gun Lithium grease no. 3 Every 3 months
4 Bracket lift system Oil gun Machine oil nr. 40 Every shift
5 Bracket lift worm bearing Oil gun Machine oil nr. 40 Every shift
6
Column guideway surface
Oil gun pouring Machine oil nr. 40 Every shift
7 Column guideway surface Oil gun pouring Machine oil nr. 40 Every shift
9 Spindle sleeve surface Oil gun pouring Machine oil nr. 40 Every shift
10 Gear shaft bearings Oil gun Machine oil nr. 40 Every shift
12 Speed declutch Shift shaft Oil gun Machine oil nr. 40 Every shift
13 Speed declutch Shift shaft Oil gun Machine oil nr. 40 Every shift
15


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