In order to ensure product quality, improve productivity and reduce cost, CNC machining of Shenzhen Puffitt Precision Products Co., Ltd. requires that the machine tool not only has good versatility and flexibility, but also has a high degree of automation in the machining process. Numerical control machining technology is a kind of efficient and flexible automatic machining technology developed under this environment, which is controlled by the digital information of numerical control machine tools and is suitable for high precision, complex part shape single piece and small and medium-sized batch production.
It contains all the information necessary for processing a part. Common control media include perforated tape, magnetic tape, magnetic disk and other carriers that can store instruction information. For short CNC machining program, it can be directly input into the CNC device through the keyboard on the CNC operation panel. Including servo drive mechanism and movable parts of machine tool. It is the executive part of machine tool numerical control system.
The pulse signal sent by the numerical control device is converted into the movement of the machine tool components, so that it becomes the command to control the machine tool. After processing the input information, the numerical control device sends command pulses to the servo system of each coordinate axis of the machine tool, drives the corresponding moving parts of the machine tool, and controls other actions such as speed change, tool change, starting and stopping the machine tool to automatically process the workpieces that meet the requirements of the drawing.
CNC machine tools are classified according to the process use, that is, according to the processing characteristics or the main processing procedures completed, mainly including CNC lathes (including turning centers), CNC milling machines (including milling centers), CNC boring machines, machining centers mainly focusing on milling and boring, and certain tables are compiled according to the movement sequence and the command code and program format given by the CNC machine tools used. Such tables are called "part processing program sheets" or "program sheets" for short.
Then record all the contents in the program sheet on the control medium (such as perforated paper tape, magnetic tape, etc.), and then send it to the CNC device to command the CNC machine tool processing. For processing simple parts composed of arcs and lines, it is only necessary to calculate the coordinate values of the intersection or tangent point (base point) of adjacent geometric elements on the part contour, and obtain the starting point, end point of the line, and the starting point of the arc.