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How to improve the machining accuracy of lathe parts(rapid prototype)

Oct 29,20

How to improve the machining accuracy of lathe parts (Rapid Prototype)
 
  1. Parts and machine tool adjustment

(1) First, from the mechanical adjustment to study how to improve the accuracy of CNC lathe processing. In terms of machine tool adjustment, it mainly includes these parts, such as spindle, bed and inlay, so as to make the lathe meet the requirements, improve the machining accuracy of CNC lathe, and regularly monitor in the working process, and constantly optimize the deficiencies in the lathe, so as to timely adjust the better products in the production department. This is the most simple and convenient way to improve the machining accuracy of CNC lathe. This adjustment method does not need good technology, but it needs staff to check and adjust from time to time.
(2) The improvement of mechanical and electrical joint debugging. In order to improve the machining accuracy of parts, it is mainly to improve the reverse deviation, positioning accuracy and repeated positioning accuracy. In terms of reverse deviation, when the deviation is too large, we should first correct it by mechanical manual way, and then when the error is small to a certain range, we will further optimize it by professional way. In the adjustment of positioning accuracy, the error is continuously optimized by the degree of the microscope. In these aspects, the electromechanical joint debugging mode is the most efficient one among these adjustment methods. Although it will be more cumbersome, but the effect is better.
 
  1. Through the electrical adjustment. The adjustment of this aspect mainly includes two aspects: one is the adjustment of machine tool parameters. In this angle, there are two aspects that affect the machining accuracy: the system gain and the positioning dead zone. In terms of system gain, we should pay attention to the mechanical damping of the lathe and the moment of inertia, which affect the machining accuracy of the lathe. There is to minimize the dead zone of positioning, which can also improve the accuracy of lathe operation. These two aspects complement each other and should be adjusted at the same time. On the other hand, it can be adjusted through the application of some systems. Due to the continuous improvement of automation, CNC lathes use automatic remote control in the process of operation, so we need to enter a series of monitoring procedures in remote control, which does not need too much manual intervention, so that it can be more effective for supervision Program to monitor the setting control, and then can improve the accuracy of lathe processing.
 
  1. Feed mechanism
 
  1. In the ball screw lead error caused by the CNC lathe machining accuracy is affected, in this respect the main factor is the pulse, so in the process of manufacturing ball screw, we should try our best to reduce the impact of pulse on the machining accuracy of CNC lathe.

(2) The influence of feed mechanism clearance on the machining accuracy of CNC lathe is mainly caused by the problems existing in the components of its transmission machinery, thus reducing the machining accuracy of out of control lathe. The main components are gear, coupling, ball screw and supporting shaft. The problems between these components will affect the machining accuracy of CNC machine tools, so we should strengthen the connectivity between their structures. The precision between them will affect the accuracy of lathe processing, so as to reduce the gap between each structure, and strengthen the tightness between the structures will improve the machining accuracy of CNC lathe.
3The influence of errors in programming
The difference between CNC lathe and ordinary lathe lies in the different precision of parts, but because the error in the process of programming can be reduced as much as possible, which requires us to reduce the error from several aspects.
 
  1. The influence of interpolation error on the accuracy of lathe. So we should try to use a certain way to reduce the programming problems, using absolute programming, and can eliminate errors is to use the quality of the reference point to program in the program.
 
  1. The influence of approximation error on the final accuracy. Due to the use of approximation in the process, so there will be errors. Therefore, it is necessary to master the profile equation as much as possible to reduce the error to a great extent, so as to eliminate the impact on the accuracy of CNC lathe processing.

(3) In the process of programming, due to the influence of rounding error, the machining accuracy of CNC lathe is reduced, so we should select the minimum value of linear displacement determined by pulse equivalent for reference. Therefore, when programming, we should strictly follow the specifications on the drawings as the benchmark.