Proper lubrication supplied carefully , will maintain the life and performance of the machine for a long period. Therefore, lubricate the machine with a high quality lubricant, and check periodically to assure that the lubricant in the oil sight gage is filled to the proper level.

1.CARRIAGE LUBRICATION:
Fill with Mobil Vactra Oil No.2 (machine oil #20) or equivalent in oil reservoir. Lift plunger on reservoir "R" (Figure 5) hold briefly and release to keep bed ways lubricated.

Figure 5-Speed Change Unit

2. GEAR BOX AND CLUTCH LUBRICATION:
Maintain oil level in sight windows "W" (Figure 7). To fill gearbox, remove plug "C" (Figure 7) use Automatic Transmission Fluid Mobil 200 (Esso ATF or equivalent Change oil every 500 hours).
To drain oil, remove the Drain Plug "M" located under the oil gear box (Figure 7).

Figure 7-Gear Box Lubrication

*CAUTION¡GUSE OF ANY OTHER TYPE OF OIL IN THE GEARBOX MAY RESULT IN DAMAGE TO THE CLUTCH SURFACES.

3. HEADSTOCK LUBRICATION:
The headstock spindle is mounted on precision preloaded ball bearings. The ball bearings are grease packed for life and require no further lubrication.

Figure 8-Control Unit Door Figure 9-Control Speed and Direction

Figure 10-Control Speed Control Box

While you threading, you have to following the steps to set up, first choose the mm/inch "H" or "G" (Figure 11) by touch screen, and choose the Right hand thread "E" (Figure 11) or Left hand thread "F" (Figure 11) by touch screen, after that choose the pitch "G" (Figure 11) and engage the lead screw nut by moving ball handled lever "I" (Figure 13) clockwise. Start the spindle by moving the lever "G" (Figure 12). Move the lever "D" (Figure 12) to make movement going left or right. The threading speed is all control by server motor , so if your make the spindle speed faster, the threading speed also will going faster, The rapid speed is control by rapid retract cam "B" (Figure 11).

*CAUTION¡GTHIS TOUCH SCREEN CAN DOING THE THREADING PITCH 0.1~6.35mm/4~200TPI.

FOLLOW SPINDLE SPEED LIMIT FOR THREADING OPERATION¡G

Figure 11-Control Speed Control Box

BIG-CHARACTER COORDINATES

Figure 17- Speed Control Box

When threading into a blind hole or to a shoulder without a thread relief. The lead screw half nut if engaged at the start of the threading work is completed. Left or right hand threads are controlled by Control lever "D" (Figure 18), the lever is joined with the control bar "B" (Figure 19). When the carriage touches the adjusting screw "S" (Figure 19) of the length control bar, it will push the lever "D" (Figure 18) to "STOP" position, and make the lead screw stop.

Figure 18-Control Speed and Direction

Figure 19-Thread Length Control

Inverter unit "D" is used to perform dynamic braking. In addition, discharge resister "C" shortens braking time (Figure 20).

Figure 20-Control Unit

Figure 21-Control Speed and Direction

Figure 22-Belt Adjustment

Before replacement of the closer, clean inside of the headstock spindle and outside diameter at rear of spindle where Adjusting Nut "N" (Figure 24) is located. Apply a film of light oil on rear of spindle Do not force Adjusting Nut "N" on spindle. If Adjusting Nut "N" fits to tight, remove and check for burrs or scratches, then replace. Clean collet closer tube inside and out apply a film of light oil on slip surface "T" (Figure 24) of the collet closer tube, replace collet loser and insert Link Pin "L" (Figure 24).

Figure 24-Collet Closer Removal

1. Before using collet closer, and any collet or step chuck to be used should be thoroughly cleaned.
2. Push the lock Pin "E" (Figure 25). To engage lock pin, turn spindle by hand till lock pin enters notch to lock.
3. Press the Closer Adjusting Finger "P" (Figure26) down to the point "F" (Figure 26).
4. Guard "G" (Figure 26) forward with the left hand, and hold the collet or stop chuck with the right hand at the same time.
5. Place a work piece in collet or step chuck.
6. Place lever "L" (Figure 26) to the extreme left fixed position. Turn the Shell Guard "G" (Figure 26) toward operator until the work piece is clamped by the collet.
7. Place lever "L" (Figure 26) to the right, the released position. Turn Shell Guard "G" (Figure 26) toward operator, move the Adjusting Finger "P".
   

Test collet closer's tension on work piece. If the work piece needs additional gripping pressure, press down on the adjusting finger "P" (Figure 26) and turn Shell Guard "G" (Figure 26) forward and lock.

Single dials with Inch Hand wheel dial "W" (Figure 27) graduations are in 0.005″. It is built for the operator's convenience of operation, both of hand wheel have indicate position system L (Figure 27). The X axis have 8 position indicate system I (Figure 27).

Figure 27-Carriage Indicating

To hold the carriage in a fixed position on the bed use the Carriage Lock Handle "H" (Figure 28). Move the lock handle "H" (Figure 28) clockwise toward the operator, lock the carriage in position. Move the lock handle "H" (Figure 28) counterclockwise away from the operator. To unlock the carriage.

Figure 28-Carriage Look

1. The carriage clutches are made of a friction type material, designed to slip when slide or carriage engages a feed stop. The clutches are a spring-loaded arrangement and can not be adjusted for more pulling power. If clutch slips under a cut, it is a sign of improper tool grinding, dull tool or excessive feed. The friction clutches have sufficient power to handle all work.
2. When the machine contacts a feed "stop", it is intended for the clutch to slip, To operate clutches as shown in (Figure 29), raise handle "H" (Figure 29) approx. 20degress above horizontal, the clutch will engage, Push down the handle "H" (Figure 29), the clutch will release. When the carriage lead screw is engaged for threading the carriage feed clutch is mechanically interlocked (can not be engaged). This is to prevent machine damage. Adjust clutches as shown in (Figure 29).

Figure 29-Carriage Clutches

The CHR-68e have quick-change turret. Pull handle H (Figure 30) down, the turret locker G (Figure 30) will unlock then the turret will turn to next position. CHR-68e turret have 6 position, each position repeat accuracy is 0.005mm.

Figure 30-Cross Slide Indicated Ring and Quick Acting

The carriage power feed mechanism is mounted on the carriage.
It is powered by a AC motor "M" (Figure 31).

1. The power feed can be operated only when the machine is running. Start the power feed by turning Cam Switch "S" (Figure 32)
2. The Cam Switch "S" (Figure 32) controls the direction of the power feed.
3. The carriage Feed Control "N" (Figure 32) controls the rate of feed. When Cam Switch "S" (Figure 33) is placed in "RIGHT" position, the carriage will feed toward the right, the cross slide will feed away from the operator.
4. When Cam Switch "S" (Figure 32) is placed in "LEFT" position, the carriage will feed toward the left, the cross slide will feed toward operator.
5. Turn Cam Switch "S" (Figure 32) to "STOP" position, power feed motor is turned off.
6. The rate of the carriage feed should be pre-selected to suit each particular job, which depend on material, diameter, type of cut, and tooling used.
7. The numbers on the carriage feed control panel, do not represent either thousandths per revolution or inches per minute. So the operator must test sample pieces for determining the spindle speed and rate of feed which can best suit to the requested surface finish and production rate, then record the proper settings after testing.
8. Handle I (Figure 30) control power feed Z-axis , Handle J (Figure 30) control power feed X-axis.

When use power feed unit control to do the facing parts , we can use CHR-68e facing length control unit to control the length . To loose screw C (Figure 34) to move the facing length . Also screw B (Figure 34) can be adjust the length .

Figure 33-Facing Stoper

The coolant pump is controlled by Switch "C" (Figure 34). Turn Switch "C" (Figure 34) to "ON" position, the pump will run continuously, turn to "AUTO" position, the pump will run only when the machine is running. If pump switch is set at "OFF" position, the coolant pump is off. Pump should be cleaned periodically, depending on the type of material being machined.

Figure 34-Control Unit Door