Thread Machining, Lathe Turning, Milling, Screw Tapping
  • The Origin of Thread Machining

    The origin of threading can be traced back to the Industrial Revolution in England at the end of the 18th century. The basic method of threading was established on lathe machines at that time. In addition to turning with lathes, modern thread machining also includes milling, screw tapping, rolling, thread making machines, etc. Threads are widely used in mechanical engineering, and are often used in parts connection and power transmission.

    Threading is a common machining technology. WKPT generally provides turning, milling or tapping on thread machining
  • Methods of Thread Machining

    WKPT can provide three general types of thread machining: thread turning, thread milling and thread tapping. The method of thread turning is cutting with a shaping tool or thread tool on a rotating workpiece, which is suitable for small quantities of precision manufacturing of internal and external threads. Thread milling is milled with a milling cutter with NC program assisted. This method is suitable for small quantities of precision manufacturing of large-pitch internal and external threads. Thread tapping is different from turning and milling, which is machined with thread tools in a hole for internal threads.

    Factors Affecting Thread Precision

    Threads for parts connection and power transmission, its precision must meet the requirements in order to provide good connection and transmission effects. The precision of the thread is related to the following factors:

    • Stability of Clamping
      The force of clamping the workpiece affects the accuracy of the finished product. Offset may happen with insufficient clamping force; while damage will be produced with over clamping force.
    • Rigidity of Machining Center
      It refers to the vibration generated by the machine tool during machining. The higher the rigidity, the smaller the vibration, and the accuracy of the finished product is relatively high.
    • Precision of Tools
      The precision of machining is highly relative to the different properties of various materials in machining. For example, if the material property is hard, there will be more damage to the thread tools during cutting. If the material property has good toughness, the built up edge (BUE) may happen on the cutting tools which will affect the accuracy of the threads.
    • The Level of the Controller
      The higher the level of the controller, the more accurately it can convert motion commands to servo motors, drive motors and machine, and the accuracy of the finished product will be also relatively improved.
  • Quality Control and Inspection of Thread Machining

    After finishing the thread machining, we use thread inspection equipment such as ring thread gauges, thread detectors or 2.5D image measuring machine to provide different levels of accuracy inspection. We ensure the quality and precision of thread machining, detecting from internal/external thread, major/minor diameter, thread depth, pitch to thread angle, making our machining services satisfactory to our customers.

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