Part program for CNC engraving and milling machine

When engraving and machining parts on CNC engraving and milling machines, whether it is manual programming or automatic programming, the first problem encountered by Shouguang is process processing. The part program for CNC engraving and milling machine is usually much more complicated than the part procedure used for ordinary machine tools. The process specification for ordinary engraving and milling machines is actually just a process card. The tools used on the machine tool, cutting amount, cutting route, and steps in the process are often selected by the operator. On CNC engraving and milling machine.

These contents must be changed into a fixed purchase program. Even if the operator wants to master the Dongqu flexibly, it must be selected and arranged in advance, and written in the program. The part program should include the movement process of the machine tool, the selection of the tool, the fixed tool The determination of the route, the choice of cutting amount and so on. This requires programmers to have a high level of quality. They must be familiar with machine tool performance, features, cutting specifications, and tool systems. Gading programs must not go wrong, otherwise accidents will occur.

CNC engraving and milling machine mainly uses PC104 system technology. It is an industrial control bus specifically defined for embedded control. Its signal definition is basically the same as PC / AT, but the electrical and mechanical specifications are completely different. It is an optimization. Compared with ordinary PC and ISA bus control system, the embedded control system of small, small, stacked structure has the following characteristics:

(1) Small size structure: The mechanical size of the standard module is 3.6 × 3.8 inches, that is, 90 × 96mm.

(2) Stacked connection: The bus is connected in layers of "pins" and "holes", that is, between PC104 bus modules. The connection of the bus is to bite and connect to each other through the pins on the upper layer and the holes on the lower layer. Good shock resistance.

(3) Easy bus drive: reduce the number of components and power consumption, 4mA bus drive can make the module work normally, each module consumes 1 ~ 2W. It is precisely because PC104 is small in size, low in power consumption, and reliable in connection. Using PC104 as the host can greatly reduce the size of the CNC controller, and the system is more compact and reliable. Therefore, PC104 industrial control computer is selected as the upper computer here, and a "position control card" is set up. + PC104 "open form CNC system.