The purpose of thread milling cutters:
       1. Mold manufacturing molds are precision machinery with high production costs. Therefore, in order to ensure accurate hole center distance and full thread profile, threads in large molds are processed with thread milling cutters to ensure the quality of the workpiece.
       2. For non rotating or asymmetric parts, the first difficulty encountered by using thread turning methods due to the shape asymmetry of the parts is clamping, and the machining accuracy can also be guaranteed.
       3. Large boring hole diameter and intermittent cutting.
       Common problems with thread milling cutters:
       1. Cutting edge collapse
       ① Reason: Incorrect selection of cutting speed and feed rate. Solution: Determine the correct cutting speed and feed rate from the machining parameter table.
       ② Reason: The thread milling cutter moves or slips on its clamping device. Solution: Use hydraulic clamps.
       ③ Reason: Insufficient rigidity of the machining machine. Solution: Ensure the reliability of workpiece clamping; If necessary, re clamp the workpiece or improve clamping stability.
       ④ Reason: Insufficient coolant pressure or flow rate. Solution: Increase the coolant flow rate and flow rate.
       2. There are differences in the detection results between the workpiece and the workpiece
       ① Reason: The distance between the tool processing area and the clamping area is too far. Solution: Minimize the overhang of the tool on the clamping device as much as possible.
       ② Reason: The selected coating is incorrect, resulting in chip buildup. Solution: Study the applicability of other coatings; Increase the coolant flow rate and flow rate.
       ③ Reason: The thread milling cutter is excessively worn. Solution: Shorten the interval between tool changes.
       ④ Reason: The workpiece is displaced on the fixture. Solution: Ensure the reliability of workpiece clamping; If necessary, re clamp the workpiece or improve clamping stability.
       3. Accelerated or excessive wear of thread milling cutters
       ① Reason: Incorrect selection of cutting speed and feed rate. Solution: Ensure that the correct cutting speed and feed rate are selected from the machining parameter table.
       ② Reason: The tool is subjected to excessive pressure. Solution: Reduce the feed rate per tooth; Shorten the interval between tool changes; Check for excessive tool wear - the thread at the beginning will wear the fastest.
       ③ Reason: The selected coating is incorrect, resulting in chip buildup. Solution: Study the applicability of other coatings; Increase the coolant flow rate and flow rate.
       ④ Reason: The spindle speed is too high. Solution: Reduce the spindle speed.
       4. Steps appear on the thread profile
       ① Reason: The feed rate is too high. Solution: Reduce the feed rate per tooth.
       ② Reason: The machining programming of slope milling adopts axial motion. Solution: Ensure that the thread milling cutter milling the tooth profile curve at the major diameter of the thread without radial movement.
       ③ Reason: The thread milling cutter is excessively worn. Solution: Shorten the interval between tool changes.

       ④ Reason: The distance between the tool processing area and the clamping area is too far. Solution: Minimize the overhang of the tool on the clamping device as much as possible.

       That's all for today's introduction of the knowledge of thread milling cutters. I hope everyone in the team can be helpful. You can also follow Shandong Tianhua Science and Trade Co., Ltd. to learn more about cutting tool knowledge.