Introduction
In industrial manufacturing, cutting threads on cylindrical parts represented by pieces of stock is a common task of machining centers. Threaded pieces are used in a variety of applications, such as bolts, screws and nuts. CNC lathe is one of the most appropriate machine for cutting threads. The Variable Lead Thread Cutting on the CNC lathe have the advantages of high precision, strong rigidity and simple programming, Therefore, it is increasingly used in industrial production.
Principle
The Variable Lead Thread Cutting on CNC lathe includes involute thread cutting, which is a cutting mode that relies on the contact between the cutter motion curve and the thread cutting groove. The motion curve of cutter can be straight line or non-linear curve according to the threadlead. The motion curve is the motion path generated by the motion of the tool post along with the rotation of the spindle. The corresponding motion curve can be generated according to the curve level, or the length and lead of the thread on the computer. When cutting, the cutter slides in the axial direction along the lead l, forming a cutting edge length l, so that the thread with specific lead l is cut on the workpiece.Involute thread is the most commonly used thread because it has better rigidity, easier machine manufacturing and shorter cutting time compared with other kinds of threads.
Structure and Features
The basic structure of the Variable Lead Thread Cutting on CNC lathe consists of a workpiece chuck, a tool post, a tool holder, a cutter, a CNC system and a bed. The tool post consists of components such as a slide bar, a lead screw and a motor, which cooperate with the tool holder, cutter and CNC system to change the lead of the cutter along the axial direction of the workpiece and control the motion path along with the rotation of the workpiece chuck.
The Variable Lead Thread Cutting on CNC lathe has the features of high precision and stability. The cutter motion curve can be non-linear and the lead of the thread can be changed easily. According to the motion curve of the cutter and the difference of lead, the cutting length of the edge can be changed, thus enabling the thread cutting with various lead.
Application
The Variable Lead Thread Cutting on CNC lathe is widely used in industrial production because of its high precision and strong rigidity. It is suitable for mass production of parts with high precision requirements and small batch production of parts with special requirements. It can accurately cut threads with different angles and lead and is especially suitable for parts with complex shapes and steps, especially for parts with large lead changing range.
Conclusion
The Variable Lead Thread Cutting on CNC lathe has the advantages of high precision, strong rigidity and simple programming and is suitable for mass production of parts with high precision requirements and small batch production of parts with special requirements. With the development of CNC technology, the Variable Lead Thread Cutting on the CNC lathe will gain more applications and play a more important role in industrial production.
