Operation Manual

15
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
7.2. descripTion of conTrol elemenTs
Figure A – Control elements
1 Table bracket lift handle 12 Tool unload handle
2 Feed depth adjusting handle 13 Electrical cabinet handle
3 Feed depth leadscrew lock handle 14 Main motor stop button
4 Hand feed handle 15 Lamp button
5 Connect/disconnect button for electromagnetic feed
clutch
16 Coolant pump button
6 Feed regulating lever 17 Tapping select button
7 Coolant supply valve 18 Motor speed switch
8 Spindle speed change handle A 19 Power supply switch
9 Spindle speed change handle B 20 Table clamp/loose lever
10 Main motor start button 21 Bracket clamp/loose lever
11 Emergency stop button
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 (8 and 9) to the desired position. Then turn the switch (18) to position 1 or 2. The
speed for forward is selected. Turn the switch to position “R” for the same speed in reverse running.
Spindle feed operation
Automatic feed
First stop the motor. Turn the feed change lever (6) tot the desired feed rate on the feed chart. Push down
the button (5) on the end of the hand feed lever (4) to engage the electromagnetic clutch. Auto feed with
the selected speed starts. If you need to stop during the process, push button (5) on the control panel to
disengage the electromagnetic clutch.
Hand feed
Turn the handles (4) counter clockwise for hand feed of the spindle during drilling.
Tapping
The auto feed button should not be pushed down when tapping, because the spindle feeds according to the
pitch. For safety, please turn the tapping select button (17) to the tapping position and keep it interlocked with
auto feed.
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.
Tool loading and unloading
Tool loading
Push in the tool loading lever (12) towards the spindle box. The limit shaft blocks the spindle sleeve from rising to
its limit height. Push the tool taper shank into the spindle bore and fit tightly.
Tool unloading
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
1. Never pull out the tool unloading lever (12) 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.
2. 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.