- Do not rotate the spindle more than maximum allowable speed. This may result in fatal injury that spring out the workpiece.
- If the chuck or the jig being used is not SYIL products, check the maximum safe operating speed and maximum allowable pressure of the manufacturer, then operate them within maximum conditions.
- Make sure to set the machining condition securely when cutting the heavy or big diameter workpiece. Set the machining condition according to the instruction manual of chuck maker.
- Always use tools suitable for the work and which conform to the machine specifications.
- Replace tools quickly since badly worn tools may result in a sudden accident or machine damage.
- Before starting to rotate the spindle, check that any part which are bolted or clamped to the chuck or the steady rest are properly secured.
- If the center hole on large bar workpiece is too small, the workpiece could come off when a load is applied. Make sure that the hole is big enough and that it has the correct angle.
- Take care not to be caught your fingers in the chuck.
- Always use the crane or lifting gear for heavy chucks, steady rests, and workpieces.
- Be sure not to turn off the power under the condition of clamping the workpiece.
- Always close the front shield before starting to rotate the spindle.
- Specially pay attention to the machining condition and the workpiece balancing when the spindle is rotating at maximum allowable speed.
- If special jaws(larger than standard soft-top jaws) are used, observe the following points:
- Lower the spindle speed because centrifugal force reduce the gripping force of chuck.
- Jaw nuts must be positioned within outer diameter of the chuck.
- Machine the jaws with the workpiece shape.
- Securely tighten the bolts on the chuck body and the jaws to the specified torque according to the instruction manual of chuck maker.
- For safe chucking
- The gripping force of chuck must be set to enough the safety factor(2-3 or more). Run the spindle within the allowable speed range.
- In constant peripheral speed cutting, calculate the actual machining speed before designating G50 (maximum speed limit function).
- Secure the jaw gripping depth as much as possible.
- Before machining an unbalanced workpiece, carry out balancing of the workpiece weight by gradual changing the spindle speed.
- Never attempt to install jigs using T-nut. Be sure to fix the jigs with bolts.
- No chucks prepared by SYIL have T-groove.
- When inserting a bar material into the hollow chuck, ensure that the bar does not protrude from the rear end of the cylinder.
- Never use double chucking method.
- If the spindle must be rotated close to the maximum allowable spindle speed, observe the following points:
- Make sure that the workpiece clamped in the chuck is balanced.
- Apply the allowable maximum amount of pressure to grip the workpiece because centrifugal force reduces the chuck gripping force.
- The maximum allowable spindle speed and application pressure are indicated on the name plate on the front shield and on the chuck body. The allowable maximum speed and the applicable pressure ensure a chucking force that is more than one-third overthe original chuck gripping force with the standard soft-top jaw set in line with the periphery of the chuck body.
- Since the tool holders can be mounted from the left or the right, check that the tool holder is mounted facing the correct direction.
- Spindle chuck must be adjusted so the radial stroke is no more than 4 mm over workpiece dimension, and it is very important to clean and grease at least every week at the chuck guide for keeping clamping force.
- Tools setting must be done in axes and spindle stopped condition. In the tool setting and maintenance phase, it is necessary to pay attention to tool spike and turret position to avoid interference with machine parts or body parts. Tool and tool holder screw tightening torque must be as specified in normalized ISO table.
- Make sure that the tool length is not to interfered with fixtures or other objects.
- Perform a test operation after mounting a tool.
- After machining soft jaws, check that the workpiece is correctly clamped and the chuck pressure is correct.