Jet GHD-35PFV, Руководство по эксплуатации

Страница: 16 / 37

Model
GHD-35PFV
Operation Manual
Total 24
page 14
4.2 Explanation of the circuit
When using the machine, breaker QF1,QF2
，
which positioned electric box B1( drawing 4,5) must be closed, it can be opened
when examined and repaired. The two breakers separately protect short circuit
、
over loading and short phase of spindle motor and
pump motor .When close the chief switch QS1, the system is entering working state and the single lamp HL1 light up ,when break
the chief electric source, the lamp crush out and working stopped.
4.3 Tapping operation:
Electric Element for the tapping control mainly transducer INV1 and contactors KM1, selection switch SX1 and limit switches
SQ2 and SQ3 for tapping depth control. Put the selection switch SX1 into the “1”(“0”is for hole drilling only),arrange the
spindle revolution in clockwise direction KM1 engaged), put the spindle manual operation lever in down position until touches
work piece, tapping job noe is starting. When required depth is reached , the limit switch SQ3 works, the spindle immediately
runs in counter clockwise direction , the tap returns out of the work piece, when spindle returns to the up highest position ,the
limit switch SQ2 works, spindle runs in clockwise direction, now one tapping job is finished. If tapping stop is required, push
the button (SB4) on the lever end , the spindle motor will immediately run in count clockwise direction, that’s all. If the
selection switch SX1 is in the “0”position, normal drilling work starts.
Attention: As the spindle motor works frequently during tapping, the motor will be hot quickly ,so the tapping job could not
be down for a long time, eight times of tapping per minutes maximum is recommended as the motor needs cool
when it is hot otherwise it will be burned.
4.4 Auto feed operation:
When auto feed , moving spindle down 5-6mm, press a push button at the end of either one of the three levers, now feed clutch
is engaged and indicator HL2 on the panel is lighted auto feed job is started. When required drilling depth is reached, the
limited switch will be pressed, then spindle returns automatically. Press the push button of the lever once again, auto feed
will be stopped and the spindle will return back to the original place.
4.5 Emergency stop operation:
If emergency stop is necessary during operation, press emergency push button SB1 that makes the loss of electric power of the
contactor KM1,so the machine is completely stopped .After eliminating the breakdown ,release the lock of the push button then
restart the machine.
4.6 Coolant pump
Revolving the switch(SX2)of coolant pump right, then the coolant pump is moving and working with the spindle. When the
spindle stopped, the coolant pump stopped too.
4.7 Installation of the main motor:
Insert the key of the main motor into the slot position of the spline shaft then fixed by 4-M10
×
35 hex screw bolts.
Connect three phases and one ground wires to the power supply as per the electrical diagram (5) of the machine.(please note the
direction of main revolving).
4.8 Sheet metal guard:
The sheet metal guard of this machine has a safety protection function, when it is opened
The spindle can’t working, until it is closed when the spindle is working now, it immediately stopped if The sheet metal guard is
opened.
4.9 Maintenance of the electric equipment:
Turn off the electric power before maintenance of the electric equipment starts. The electric equipment must keep on clean
condition. Therefore, regularly cleaning is necessary. However, liquid such as kerosene, gasoline and detergent etc.is not be
allowed for the cleaning. Wave of power supply shall not be over
±
5% required by the electric motor. Maintenance of electric
equipment is absolutely important in order to keep machine works well.