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Resumen del manual
While supporting the weight of the chuck/faceplate, turn one cam with the chuck key until the cam line is between the two V's on the spindle. Do not fully tighten at this time. Figure 24. Tightening the cam-locks. 7. Rotate the spindle and repeat Step 4 on opposite cam. 8. Rotate the spindle and repeat Step 4 on the rest of the cams in an alternating manner. 9. When all cams are snug, return to the first cam and tighten the cam completely. Repeat this step with the rest of the cams. Three-Jaw Chuck The three-jaw chuck included with this lathe is a scrolling-type chuck, which means all three jaws tighten at the same time when the chuck key is turned. As a result of this scrolling action, the jaws center the workpiece within 0.002"-0.003". Also, the jaws are reversible to accommodate different workpieces, as shown in Figure 25. Clamping on an Outside Diameter Clamping in an Inside Diameter Figure 25. Loading a workpiece. Reversing Jaws 1. DISCONNECT LATHE FROM POWER! 2. Remove the cap screws (Figure 26) from one of the jaws with an 8mm hex wrench, then remove the jaw. Figure 26. Cap screws securing the jaws. 24- MB G9036 13" X 40" Gear-Head Lathe 3. Rotate the jaw 180° and replace the cap screws. Make sure the longer cap screw remains in the thicker part of the jaw. Repeat with the remaining jaws (Figure 27). Figure 27. Reversing the chuck jaws. Mounting Workpiece 1. Use the chuck key to open or close the jaws as necessary and position the workpiece in one of the four configurations shown in Figure 25. 2. Open/close the jaws until they make light contact with the workpiece. 3. Rotate the chuck by hand to make sure all three jaws evenly contact the workpiece and the workpiece is centered. —If the workpiece is off center, loosen the jaws and adjust the workpiece. —If the workpiece is centered, tighten the jaws. Awarning Securely clamp your workpiece and remove the chuck key! Thrown objects from a lathe can cause serious injury or death to the operator and to bystanders many feet away. Four-Jaw Chuck The four-jaw chuck included with this lathe features independently adjustable hardened steel jaws. Each jaw can be removed from the chuck body and reversed for a wide range of work holding versatility. Install the four-jaw chuck according to the instructions on Page 22. Awarning Large chucks are very heavy. Always get assistance when removing or installing large chucks to prevent personal injury or damage to the chuck or lathe. To mount a workpiece in the four-jaw chuck: 1. DISCONNECT LATHE FROM POWER! 2. Open each jaw with the chuck key until the workpiece can lie flat against the chuck face. 3. Support the workpiece and slide the dead center in the tailstock against the workpiece, then lock the tailstock. For more information, refer to the tailstock controls on Page 21 and Centers on Page 27. 4. Turn the tailstock quill so the dead center applies enough pressure to the center point of your workpiece to hold it in place (Figure 28), then lock the tailstock quill. Figure 28. Centering workpiece (tool post removed for clarity). G9036 13" X 40" Gear-Head Lathe -25- 5. Turn each jaw until it just makes contact with the workpiece. Faceplate 6. Tighten each jaw in small increments. After adjusting the first jaw, continue tightening in opposing sequence (see Figures 28 & 29). Check frequently to make sure you have not wandered off your center point due to applying too much pressure to a single jaw. After the workpiece is held in place, back the tailstock away and rotate the chuck by hand. The center point will move if the workpiece is out of center (see Figure 30). The faceplate is used to turn non-cylindrical parts and for off-center turning. To mount a workpiece on the faceplate: 1. DISCONNECT LATHE FROM POWER! 2. Support the workpiece and slide the dead center in the tailstock against the workpiece, then lock the tailstock. For more information, refer to the tailstock controls on Page 21 and Centers on Page 27. 3. Turn the tailstock quill so the dead center applies enough pressure to the center point of your workpiece to hold it in place. 4. Lock the tailstock quill when sufficient pressure is applied to hold the workpiece in place. Additional support may be needed, depending on the workpiece. Awarning Securely clamp your workpiece and remove the chuck key! Thrown objects from a lathe can cause serious injury or death to the operator and to bystanders many feet away. Figure 30. Properly held workpiece for offset machining at low RPM. 8. Make fine adjustments by slightly loosening one jaw and tightening the opposing jaw until the workpiece is precisely aligned. 9. Use low spindle speeds when machining heavy eccentric workpieces. -26- G9036 13" X 40" Gear-Head Lathe 5. Secure the workpiece with a minimum of three independent clamping devices (see Figure 31). Failure to follow this step may lead to deadly injury to yourself or bystanders. Take into account rotation and...