Automatic cutting machine processing method

The shapes positions of the geometric dimensions of the components that constitute the contour part (for example, the position of the line, the radius of the arc the circle, arc straight line intersects, etc.) are important bases for NC program design. When programming manually, it should be defined according to the calculated coordinate values of each node when programming automatically. No matter what the conditions are, programming cannot be performed. Therefore, when analyzing the model parts, it must be careful, "- the problems found in Japan should be negotiated with the designers to change the design.
The positioning system benchmark of the automatic cutting machine CNC technology processing, in the analysis of the CNC processing process, pay attention to improving the selection installation of the workpiece positioning base push other issues. Attention should be paid to the following issues:
(1) According to the principle of a unified standard, a unified positioning benchmark for the table back is selected to ensure the accuracy of the surface position of the workpiece avoid reducing the positioning error caused by repeated clamping.

(2) Strive to achieve the same difficulty by designing a benchmark, process benchmark programming method to calculate the basis.
(3) If necessary, establish a process benchmark on the workpiece contour remove it after processing.
(4) Generally, the processed surface should be selected as the positioning benchmark for CNC machining.
The process analysis CNC machining objects are usually carried out in the rough parts the development of the design plan. You will encounter many problems. Especially in the ordinary machine tool RAU change processing of the original part of the CNC machine tool, you will encounter more trouble. Paper cutter Because the product has been finalized to adapt to CNC machining, the part drawing blank drawing must be significantly changed, but it is just a matter of the technical department. Therefore, the programmer works closely with the product design process, as much as possible to review the program before the product parts are established, fully consider CNC machining, labeling part drawings, basically the technical characteristics of the structure to adapt to the requirements of CNC machining, without affecting the functional use of the parts, partially meet the design requirements of CNC machining.
The processing technology of CNC button milling includes milling of a plane, milling of two-dimensional contours, milling of plane cavities, drilling, wall hole processing, processing of box parts, milling of complex surfaces through three-dimensional structures. These information processing capabilities are generally carried out on CNC hammer milling machines collar milling service centers. Among them, the development of contour milling with very complex curve contours, complex cavity milling three-dimensional complex surface milling must also use electronic computer network assisted CNC programming, while other processing processes can directly use traditional manual programming, can also use graphic programming computer teaching assisted CNC programming.
Common process problems of CNC milling of fully automatic cutting machines are mainly manifested in the following aspects.
1. Determination of the coordinate system of the workpiece setting of the program origin
The workpiece coordinate system adopts the coordinate direction consistent with the machine tool motion coordinate system. The origin of the workpiece coordinate system (that is, the program origin) should be selected as a reference position that is convenient for measurement tool setting, should also be convenient for programming calculation.
2. Determination of safety height
When the automatic cutting machine is milling, the starting point the retreat point must be at a safe height away the upper surface of the machined part to ensure that there will be no collision between the workpiece the fixture when the tool stops. At the safe height, the plane the tool center ( tip) is located is called the safety plane.