1 The influence of NC programming on machine tool machining accuracy and its solution 1.1 The influence of the choice of programming origin on the machining accuracy and control measures When programming NC, the first factor to consider is the determination of the programming origin. Generally speaking, the determination of the programmed coordinate system requires the relevant operator to consider the characteristics of the required machined parts and drawings, etc., in which the determination...
The machining process of CNC machine tools involves a wide range of factors, and there are many influencing factors. When processing the workpiece, the processing characteristics of CNC machine tools should be considered. 1. Analyze the dimensioning method in the part drawing Figure 1 Unified reference labeling method The method of engraving the size or directly labeling the coordinate size with the same reference is a unified reference labeling method. The marking method (shown in Figure 1) is...
In production, it often encounters faults in the machining accuracy of CNC machine tools. Such faults are highly concealed and difficult to diagnose. The main causes of such failures are the following: 1) The machine feed unit has been changed or changed 2) The zero offset (NULLOFFSET) of each axis of the machine tool is abnormal. 3) Axial backlash (BACKLASH) anomaly 4) The motor is running abnormally, that is, the electrical and control parts are faulty. 5) In addition, the preparation of the...
Quickly establish the machining accuracy of CNC carving equipment in three minutes This article is suitable for CNC engraving machine beginners to quickly popularize knowledge. Let's look at the machine first, the verticality, flatness, positioning accuracy and repeated positioning accuracy between the shafts. Taking the positioning accuracy as a simple example of 0.01mm / 300mm, this is the theoretical maximum accuracy that can be achieved for each 300mm of the device. At 0.01mm. Look at the...
Because more and more factories use automatic control, manual operation is replaced by mechanical or automation equipment, the executive body is required to act as an interface between the control system and the valve mechanical movement, and the implementing agency is required to enhance the work safety performance and Environmental protection performance. In some hazardous situations, automated actuator installations reduce personnel injuries. Some special valves require emergency opening or...
Compared with the internal cylindrical grinding machine of lathes, milling machines, etc., the use of CNC system later, due to its special requirements for CNC system. In recent decades, with the realization of CNC technology, continuous grinding wheel dressing, automatic compensation, automatic wheel change, multi-table, automatic transmission and clamping workpiece, CNC technology has gradually become popular in surface grinding machines and internal cylindrical grinding. Internal grinding...
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