To improve the machining precision of NC lathe in 1.1 parts and machine tool adjustment
First, from the mechanical adjustment to study how to improve the machining precision of NC lathe. In the adjustment of the machine mainly includes three parts, spindle, a bed body and inlaid with bar and so on, so as to makes the lathe meet the requirements, improve the precision of CNC lathe processing, timing control in the working process, and to continue to optimize the deficiencies in the lathe, in order to adjust the production of the better products. This is to improve the machining accuracy of NC lathe in the most simple and convenient way, this method does not need to adjust the good technology, but need to check the staff from time to time to adjust.
Second, the FBI is improved in the aspects of mechanical and electrical, in order to improve the machining accuracy of parts is mainly carried out in reverse bias and improve the positioning accuracy and repeatability of these aspects. In reverse bias the deviation is too large to first by a mechanical manual mode for correction, and then when the error is small to a certain range after reoccupy major way for further optimization. The location precision adjustment by microscope to optimize the degree of error. The FBI optimize electromechanical in these areas is the most efficient way to adjust these methods. Although more cumbersome but better.
Third, it is through the adjustment in the electric field, this adjustment is mainly includes two aspects, one is the adjustment of machine parameters, in this point and two aspects affecting the machining accuracy is system gain and the positioning of the dead, in system gain we should concern lathe by mechanical damping and rotation inertia, which affect the precision of lathe machining. There is to minimize the positioning of the dead zone, so that it can improve the accuracy of the operation of the lathe. These two aspects are complementary to each other at the same time to adjust. Another aspect is that we can through the application of some system to adjust, because now automation degree unceasing enhancement, CNC lathe is in operation in the process of using automatic remote control, so we have to in remote control to enter a series of monitoring program, this need not too much manual intervention, so that we can more effective regulation, through the program to control settings control and can improve the machining accuracy.
1.2 to adjust the feed mechanism to improve the machining accuracy of CNC lathe
First, in the ball screw error caused by the machining accuracy of NC lathe affected and factors of influence in this area are mainly impulse, so in the procedure of manufacture of ball screws, to try to reduce the error resulting in pulse effect on machining accuracy of NC lathe.
Second, in the gap of the feeding mechanism influence on machining accuracy of NC lathe. This is mainly due to the problems existing in the mechanical transmission part of the effect of, thereby reducing the control accuracy of the lathe. The main part is the gear, shaft coupling, ball screw and supporting shaft. These constitute the part between the problem will affect the machining precision of NC machine tool, so we have to strengthen the connectivity between their structure. The precision between them will affect the accuracy of the lathe processing, thus reducing the gap between the various structures, strengthening the structure of the close between the CNC machining accuracy will be improved.
Effect of error in programming the 1.3
The difference between the CNC lathe and ordinary lathe is parts of different precision, but due to the procedures in the preparation process of error is you can minimize, which requires us to from several aspects to reduce the error, and improve the precision of NC lathe machining.
First, due to the impact of the interpolation error caused by precision lathe. So try to use some ways to reduce programming problems, using absolute programming, and can eliminate the error is to insert a reference point will the quality of program programming.
Second. The influence of approximation error for the final accuracy. Because in the process, the approximate situation so there will be errors. So try to grasp the profile equation when programming will reduce the error to a great extent, it can eliminate the influence of CNC lathe machining precision.
Third, the programming process due to the effect of roundness error reduces the machining accuracy of NC lathe, the minimum linear displacement so we must choose the pulse equivalent is determined in the processing of reference. So when programming should be strictly in accordance with the drawings of the above specification as a reference work.