Lifting machine, arrange rope or cable as shown in figure 1, and check to see if the correct balance has been obtained. Then insert pads of soft cloth between the edges of the rope and machine. The net weight of this machine is approx 1100 kgs (2420 lbs). So the rope or cable must be rated at 3000 lbs capacity.

An inspection should be made after arrival of the machine in your plant. Look for possible damage caused by shock or vibration during transportation, also check for any missing parts, standard tools or other equipment.

In shipment, all exposed surfaces of the machine are coated with a antirust liquid. Before moving carriage and cross-slide, lead screw tailstock…etc, these surfaces should be thoroughly cleaned to remove all antirust liquid use a soft brush and solvent. This is very important because it can prevent any dirt or grit which may have accumulated on the antirust liquid from working under the sliding members and causing undue wear.

※CAUTION：
DO NOT USE COMPRESSED AIR TO CLEAN, WHICH WILL REDUCE THE MACHINES LIFE.

A fairly flat foundation and proper installation will provide the machine long-term high accuracy, so supplying a good solid foundation of proper thickness is important. (Generally, a thickness of 300mm (12") is considered to be enough.) The machine has six adjustable feet on the corners of the pedestal base, used for leveling the machine. Place the pads under the feet of pedestal. To adjust, loosen the set screw and raise or lower the foot with a pin wrench so that all six feet rest firmly on the floor. When the adjustment is done, tighten set screws

The CHR-68e TOOLROOM LATHE is shipped completely wired and assembled, Turn Cam Switch "A"(Figure 2) to the "OFF" position, then check motor voltage. Loosen screws "B"(Figure 2), and open the switch case cover, connect the wires from the power source to the terminals (R.S.T), and ground connection is made at the "G"(Figure 3) which is the electric switch case.

Pull out Spindle locking Pin "E" (Figure 4), push "G" (Figure 4) in forward position. The spindle should rotate counterclockwise when viewed from the tailstock end of the machine. If the spindle dose not turn in the correct direction, turn Cam Switch "A" (Figure 2) to "OFF" position. Disconnect electric power source, and interchanges any two leads until the turning direction is correct. When the spindle is rotation correctly, secure switch case cover, turn Cam Switch "A" (Figure 2) to "ON" position.

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.

Figure 5-Speed Change Unit

Figure 7-Gear Box Lubrication

Figure 7-Gear Box Lubrication

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：
THIS TOUCH SCREEN CAN DOING THE THREADING PITCH 0.1~6.35mm/4~200TPI.

Figure 11-Control Speed Control Box

Figure 12-Feed of Thread Change

Figure 13-Carriage Clutches

For CHR-68e have DRO system, the position all appear in touch screen "L" and "M" (Figure 14) or touch position button "O" (Figure 14) to only show the X and Z position, by big character coordinates (Figure 17). If want to set the position number or set position to zero, must be touch set button "A" (Figure 17). If didn’t touch set button can not be set position to zero or any number.

Touch the memory bottom "N" (Figure 14) will appear the digital operation system. Touch "A" (Figure 15) set button before doing any memorize step. If didn’t touch set button and memorize key can not be work. Touch the "B" (Figure 15) to memorize Z and X position from and "D"& "C" (Figure 15). For digital operation have 8 set of memory to memorize the X and Z position. Touch the "E" (Figure 15) switch to 1~4 memory set or 5~8 memory set (Figure 16). Touch return "F" (Figure 15) to return to the main screen.

Figure 15- Speed Control Box


Figure 16- Speed Control Box

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.

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

Run spindle at approximately 1000 rpm. Move lever "G" (Figure 21) to center "STOP" position and let the spindle coast to a stop. This is done to equalize belt tension. Loosen lock nut "N" (Figure 22) with 19mm wrench. Turn adjusting screw "P" (Figure22) with screwdriver clockwise to tighten belts. Stop machine and check belt tension, there should be approx.1" of play in belt.

Figure 21-Control Speed and Direction

Figure 22-Belt Adjustment

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

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.

Figure 31-AC Motor

Figure 32 Power Feed Unit