''Accuracy is the degree of closeness to true value. Precision is the degree to which an instrument or process will repeat the same value. In other words, accuracy is the degree of veracity while precision is the degree of reproducibility.
Machining process is a broad term that refers to the cutting processes, abrasive processes and the non-traditional machining processes.
First and foremost it obtains it's accuracy through The Rigorous Process called Precision Manufacturing.
non conventional machining process are those where the tool & work piece does not make contact each other but the require machining process is done. some of the non conventional maching process are listed as: ultra sonic,plasma arc machining ,LASER machining,ELECTRO CHEMICAL PROCESS, ELECTRO DISCHARGE MACHINING ABRASIVE JET
a machining process carried out on a workpiece with constant cross-section.
objectives of magneto abrasive flow machining
forcing abrasives over work piece at higher speed for cutting . it is unconventional machining process .
Five axis CNC machining is an advanced CNC machining technology that can perform cutting operations on multiple axes simultaneously to achieve complex shape machining. Compared with traditional three-axis machining, five-axis CNC machining has greater flexibility and accuracy. Five axis CNC machining is usually operated using a CNC machine tool with five independent motion axes. These five axes include the X axis, Y axis, Z axis, and two rotation axes, commonly referred to as the A axis and C axis. X. The Y and Z axes are responsible for linear movement, while the A and C axes are responsible for rotation. By simultaneously controlling the motion of these five axes, a five axis CNC machine tool can perform cutting operations in multiple directions, thereby achieving complex shape machining. This machining technology is suitable for workpieces that require cutting on multiple planes, such as curved parts, complex engraving, spiral shapes, etc. The main advantages of five axis CNC machining include: Complex shape machining: Five axis CNC machining can simultaneously perform cutting operations on multiple angles and planes, making it easier and more accurate to process complex shaped parts. Reduced process: Compared to traditional multi process machining, five axis CNC machining can complete multiple surface machining through one clamping and continuous cutting, reducing process and clamping errors. Improve production efficiency: the simultaneous cutting ability of five axis NC machining can significantly improve production efficiency and shorten Makespan. Improving surface quality: Through five axis CNC machining, smoother and finer surface quality can be achieved, reducing subsequent manual finishing. It should be noted that the five axis CNC machining technology is more complex than traditional three axis machining and requires a higher level of operation and programming skills. At the same time, the equipment and maintenance costs of the five axis CNC machine tool are also high. However, for applications that require high-precision and complex shape machining, five axis CNC machining is a very valuable technology.
The adaptive control is basically a feedback system that treats CNC as an internal unit in which the machining variables automatically adapt themselves to the actual conditions of the machining process.
conventional machining is that in which the control of removal of material is either by automatic machines or by man handled.while cnc machinig is that in which control of machining process is done by computes or through programming.