Analysis and solution of common problems in the thread milling

(1) the reasons for the accelerated wear or excessive wear of the thread milling cutters: the choice of cutting speed and feed rate is not correct. Solution: to ensure that the correct cutting speed and feed rate are selected from the machining parameter table.
Reason: the tool is too much pressure. Solution: reduce the feed per tooth; shorten the tool changing time interval; check the excessive wear of the tool. The thread of the starting place will be the fastest.
Reasons: the selection of the coating is not correct, resulting in the accumulation of debris. Solution: To study the applicability of other coatings; increase coolant flow rate and flow rate.
The reason: the spindle speed is too high. Solution: reduce the speed of the spindle.
(2) cutting edge collapse causes: cutting speed and feed choice is not correct. Solution: determine the correct cutting speed and feed rate from the machining parameter table.
Cause: the thread milling cutter moves or slips on the clamping device. Solution: use hydraulic chuck.
Reasons: the lack of rigidity of machine tools. Solution: to determine the workpiece clamping reliability; if necessary, to re clamp the workpiece or improve the stability of the clamping.
The reason: lack of coolant pressure or flow. Solution: increase the coolant flow rate and flow.
(3) the reasons for the emergence of the thread tooth type: the feed rate is too high. Solution: reduce feed per tooth.
The reason: the slope milling programming using axial movement. Solution: to ensure that the thread milling cutter in large diameter thread milling at teething curve, without radial movement.
Cause: excessive wear of the thread milling cutter. Solution: shorten the time for changing the cutter.
The reason: the cutter position and clamping position too far apart. Solution: as far as possible to reduce the amount of suspension of the tool in the clamping device.
(4) the results of the detection of the workpiece and the workpiece are different. The reason: the cutting part of the tool is too far away from the clamping part. Solution: as far as possible to reduce the amount of suspension of the tool in the clamping device.
Reasons: the selection of coating is not correct, resulting in the accumulation of debris. Solution: To study the applicability of other coatings; increase coolant flow rate and flow rate.
Cause: excessive wear of the thread milling cutter. Solution: shorten the time for changing the cutter.
The reason: the workpiece in the fixture on the shift. Solution: to determine the workpiece clamping reliability; if necessary, to re clamp the workpiece or improve the stability of the clamping.