Common problems and solutions of thread milling

Cutting edge chipping

① Cause: Incorrect cutting speed and feed selection. Solution: Make sure that the correct cutting speed and feed are selected from the machining parameters table.

(2) Cause: The thread milling cutter moves or slips on its clamping device. Solution: Use a hydraulic chuck.

③Cause: Insufficient rigidity of the machining machine. Solution: Make sure the workpiece is clamping reliably; if there is **, re-clamp the workpiece or improve the clamping stability.

④ Cause: Insufficient coolant pressure or flow rate. Solution: Increase the coolant flow rate and flow rate.

Thread milling cutter accelerated wear or excessive wear

①Cause: Incorrect selection of cutting speed and feed amount. Solution: Make sure that the correct cutting speed and feed are selected from the machining parameter table.

②Cause: The pressure on the tool is too high. Solution: Reduce the amount of feed per tooth; shorten the tool change interval; check the excessive wear on the tool - the threads at the start will wear **fast.

③ Cause: Incorrectly selected coating has created a chip tumor. Solution: Research the suitability of other coatings; increase the coolant flow rate and flow rate.

④Cause: The spindle speed is too high. Solution: reduce the spindle speed.

Difference in detection results between workpiece and workpiece

① Cause: The distance between the tool processing part and the clamping part is too far. Solution: Shorten the overhang of the tool on the clamping device as much as possible.

②Reason: The selected coating is incorrect and generates chip tumor. Solution: Study the applicability of other coatings; increase the coolant flow rate and flow rate.

③Cause: Excessive wear of the thread milling tool. Solution: Shorten the time interval between tool changes.

④Cause: The workpiece is displaced on the fixture. Solution: Make sure the workpiece is clamping reliably; if there is **, re-clamp the workpiece or improve the clamping stability.

Steps appear on the threaded tooth pattern

①Cause: The feed rate is too high. Solution: Reduce the amount of feed per tooth.

(2) Cause: The ramp milling process is programmed with axial motion. Solution: Make sure that the thread milling cutter mills the tooth profile at the large diameter of the thread without making radial movement.

③Cause: Excessive wear of the thread milling cutter. Solution: Shorten the tool change interval.

④Cause: The tool machining part is too far away from the clamping part. Solution: Shorten the overhang of the tool on the clamping device as much as possible.