Techniques for Improving the Machining Accuracy of CNC Lathe

2023-12-13 11:21:02

1. Ways to improve the machining accuracy of CNC lathes

1.1 in terms of parts and machine tool adjustment to improve the accuracy of CNC lathe processing

First, from the mechanical adjustment to study how to improve the accuracy of CNC Lathe processing. In the machine tool adjustment mainly includes these parts, the spindle, the bed and the strip and so on, so as to make the lathe to meet the requirements, improve the precision of CNC lathe processing, in the process of work should also be real-time monitoring, and to constantly optimize the lathe deficiencies, in order to timely adjust the production of better products. This is the most simple and convenient way to improve the machining accuracy of CNC lathes. This adjustment method does not require good technology, but requires employees to check from time to time to make adjustments.

Second, it is an improvement in the mechanical and electrical adjustment. To improve the machining accuracy of parts, it is mainly to improve the reverse deviation and 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 method, and then further optimize it in a professional way when the error is small within a certain range. Adjustments in terms of positioning accuracy are constantly optimized by the degree of error of the microscope. The electromechanical adjustment method optimized in these aspects is the 1 most efficient of these adjustment methods. Although it will be more cumbersome but the effect is better.

Third, this is through the adjustment in electrical aspects. The adjustment in 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: system gain and positioning dead zone. In terms of system gain, we should pay attention to the mechanical damping of the lathe and the rotational inertia, which all affect the machining accuracy of the lathe. There is to minimize the positioning of the dead zone, which can also improve the accuracy of the Lathe operation. These two aspects are complementary and need to be adjusted at the same time. Another aspect is that it can be adjusted through the application of some systems. As the degree of automation is constantly improving, CNC lathes use automatic remote control during operation, so we need to enter a series of real-time monitoring procedures during remote control, so that there is no need for excessive manual intervention, which can be more effective for supervision, the setting control can be supervised by the program and then the precision at the time of lathe machining can be improved.

Improve the machining accuracy of CNC lathes 1.2 adjusting the feed mechanism

First, in the ball screw lead error caused by the CNC lathe machining accuracy is affected, in this aspect of the impact of the main factors is the pulse, so in the manufacture of ball screw procedures, to minimize the error caused by the impact of CNC lathe machining accuracy.

Second, the influence of the gap of the feed mechanism on the machining accuracy of the CNC lathe is mainly due to the problems in the components of its transmission machinery, which reduces the accuracy of the out-of-control lathe machining. The main components are gears, couplings, ball screws and supporting shafts. The problems between these components will affect the machining accuracy of CNC Machine Tools, so we must strengthen the connectivity between their structures. The precision between them will affect the accuracy of lathe processing, thereby reducing the gap between the various structures, and strengthening the tightness between the various structures will improve the accuracy of CNC lathe processing.

1.3 the impact of errors in programming

The difference between CNC lathes and ordinary lathes is that the accuracy of the parts is different, but because the program in the preparation process of the error can be minimized, which requires us to reduce the error from several aspects, so as to improve the accuracy of CNC lathe processing. First, it is due to the influence of interpolation error on the accuracy of the lathe. Therefore, we should try our best to adopt a certain way to reduce the problems of programming, adopt absolute programming, and what can eliminate errors is to use the quality of the insertion reference point to carry out programming in the program. Second, the effect of the approximation error on the final accuracy. Due to the use of approximation in the process, errors will occur. Therefore, it is necessary to master the profile equation as much as possible when programming, which will greatly reduce the error, so that the influence on the accuracy of CNC lathe processing can be eliminated. Third, the programming process due to the impact of the rounding error reduces the machining accuracy of the CNC lathe, so we have to choose the minimum value of the linear displacement determined by the pulse equivalent for reference. Therefore, when programming, work should be carried out in strict accordance with the specifications above the drawings.