Why Use CNC Machining/Precision Engineering

CNC machining is a procedure where pre-programmed software is used to give directives on how best company tools and equipment ought to move.  To a bystander, these machines look like the same original set. But this is further from the truth. The precision engineering in CNC machining differentiates them from ordinary machines that require live operations. To better understand these concepts, here is a FAQ with answers.

How Does CNC machine work?

Like a robot, CNC machinery will carry out the specified function preprogrammed in the corresponding tool. The numerical generator will often assume that the mechanisms are flawless in programming. The device can make errors, especially if it has been directed to cut in simultaneous directions. The numerical control system outlines the series of inputs known as part programs.

The programs are put into the machine through punch cards. They will first be fed on a computer and then stored in a computer’s memory. Programmers then write the code. The programming works best as you can input new sets of instructions while you have pre-existing programs. It has proven to be the best numerical system of all time.

CNC Machine Programming

In manufacturing sector, they use CNC machines which incorporate numerical control with a software controlling program to help machines carry out certain manufacturing functions. They used G-codes language to outline the machines’ behaviours to conduct themselves in. They include speed, coordination, and feed rate.

In a nutshell, CNC machining has installed programs to make repetitive, predictable cycles with a little human labor. The machines will translate a 2D or 3D drawing, then it’s changed further into computer codes. After installing the program, the operators will cross-check everything to ensure mistakes are kept at bay.

Open and Closed Looped Machining Units

While manufacturing, the position control is considered by an opened and closed-looped machining system. In an open-loop machining system, the signal runs in one direction in between the CNC controller and the motor. On the other hand, in closed-looped machining units, the controller receives feedback which makes rectifying mistakes possible. It can correct irregularities in position and velocity.

Precision engineering in CNC machining allows movement to be on the X and Y-axis. Whereas the tools are stationed through a stepper or servo motor, they imitate the directives that are input in G-codes. When the speed and force of the machine are low, it can then operate through open-loop control. But when high speed is reinstated, then close loop control should run everything. This will allow for industrial applications’ speed, consistency, and accuracy.


Due to its great potential, precision engineering has been adopted to various manufacturing sectors across the world. They include using CNC machining in the plastic and the metal industry. Acquiring such machines for your metalwork can increase costs, but you can locate renting services which are a bit cheaper. At Cheshire Seals we understand how important CNC machining can be to any industry. This is the reason why we have dedicated years into perfecting our skills. You should therefore reach out and get to benefits from our services.