Analysis of factors influencing the accuracy of cnc lathe
In recent years, have been widely used in mechanical manufacturing and other industrial production, playing an important role in generating income and increasing profits and improving production efficiency. Industrial production requires high precision of mechanical products, especially precision instrument manufacturing, which puts forward stricter requirements for numerical control technology. Therefore, it is of great significance to improve the precision operation of CNC lathe, accurately produce qualified products according to the design requirements, and strictly control the quality and safety.
1. Analysis of factors affecting the accuracy of :
In the actual operation process, due to factors such as parameter setting, lack of operator experience, non-uniform operation standards, aging and wear of lathe equipment, the machining accuracy deviation will be caused, which will affect the product processing quality. Only through careful analysis of the main influencing factors and targeted rectification can the production of qualified products be effectively guaranteed.
Servo drive generally plays an important role in the system control of CNC lathe, mainly responsible for the smooth connection between the processing parts, so as to facilitate the construction according to the process. Its working principle is to use the ball screw for effective positioning, and then use the servo motor to provide driving force to drive the operation of each component, so as to effectively control the construction accuracy of the ball screw in positioning.
Generally speaking, the semi closed loop servo system is widely used in the process of NC lathe machining. Before the motor starts, the motor will show a reverse motion state, with obvious polarization gap and idling state. Under the stable working state of the motor, a certain range of elastic deformation will occur due to the combined external force of the rotating parts and the driving mechanism. Due to different vibration frequencies, the machining point and other positions to be machined will have obvious differences, As a result, there are many gaps and the construction accuracy cannot be guaranteed.
When analyzing the system error, it is also necessary to consider the superposition effect of the direction clearance and the resulting error value, which will reduce the precision and quality of product processing.
Generally speaking, are mainly processed according to the established program through computer digital programming. The processing data is required to be input into the program in digital form, and the cutter is adjusted through parameter settings to wait for the cutting work of the processed products, so as to ensure that the finished products can meet the design requirements.
In the process of turning, the basic parameters such as the principal deflection angle and the radius of the tool tip arc can be reflected through the turning tool. When machining bar, axial dimension is often easy to cause some deviation. When such problems occur, reasonable analysis shall be carried out in time to reduce the impact of errors. This error is usually inversely proportional to the principal deviation. When the principal deviation gradually increases, the corresponding error will decrease accordingly; But it is proportional to the radius of the tool tip arc. Therefore, when the tool parameters are in the process of machining, the machining accuracy will also be reduced.
In the actual processing operation process, processing quality and processing links can be deployed and managed through reasonable prevention and control measures. Use scientific control, strictly abide by rules and regulations and technological processes, and promote the coordination and division of labor among professionals. From the aspects of equipment manufacturing design, commissioning, processing, problem investigation, improvement suggestions, supervision and management, improve the precision processing and precision management level, ensure further guarantee of product quality and safety quality, and achieve the expected goal of product design.