What is computer-assisted part programming?
With computer-assisted part programming, the machining instructions are written in English-like statements of the NC programming language, which are then processed by the computer to prepare the tape. The computer automatically punches the tape in the proper tape format for the particular NC machine.
Which of the APT modifier Word positions the center of the tool on the check surface?
The ON modifier stops the tool where the center point of the tool would come into contact with the check surface. The PAST modifier stops the tool where the last surface of the tool would contact the check surface. And the TANTO modifier stops the tool at the point of circular tangency with the edge of the tool.
Which is used as the modifier word in Motion statements of APT?
This is determined by using any of four APT modifier words in the descriptive data of the motion statement. The four modifier words are TO, ON, PAST, and TANTO.
Which is true post processor statements of the APT language?
Postprocessor statements; control the machine tool operation, for example, to specify speeds and feeds, set tolerance values for circular interpolation, and actuate other capabilities of the machine tool.
What is difference between manual part programming and computer-assisted part programming?
The difference between the two kinds of part programming is the way it is done. In manual part programming, the programming is done is done manually by humans using low-level machine language. In computer-assisted part programming, the programming is done by the computer.
What is the difference between NC and CNC machine?
NC machine is the machine that is controlled by a set of instructions in the form of numbers, letters, and symbols called a program. CNC machine is used to control motions of the workpiece and tool with a computer program written in alphanumeric data.
What is the difference between manual part programming and computer-assisted part programming?
What is the main difficulty in manual part programming compared to part programming with a computer language such as APT?
Manual part programming can be time consuming, tedious. and subject to errors for parts possessing complex geometries or requiring many machining operations.In these cases, and even for simpler jobs, it is advantageous to use computer-assisted part programming.
What programming language does ATP use?
In the ATP/MinGW program package, the source code of the ATP program is complied by the FORTRAN compiler and C compiler to generate object files. The compilers are also used to compile the user-supplied source code of a “foreign model” written in FORTRAN or C/C++ to generate its object file.
What are the types of part programming?
Hence the methods of part programming can be of two types depending upon the two techniques as below : (a) Manual part programming, and (b) Computer aided part programming. The programmer first prepares the program manuscript in a standard format.
What is meant by canned cycle in CNC?
A canned cycle is a combination of machine movements that perform machining operation like drilling, milling, boring and tapping. This cycle simplifies the program by using a single block with a G-code to specify the machining operations usually specified in several blocks. This cycle is also called as fixed cycle.
What is the difference between G code and M code?
Differences. Although machinists use G and M codes concurrently in any CNC machining process, they differ. G codes direct the machine’s motion and function, while M codes direct the operations outside movements. The G code activates the CNC machine while the M code activates the machine’s programmable logic controller.