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The Process of CNC Machining

Views:1     Author:Site Editor     Publish Time: 2020-06-27      Origin:Site

The Ultimate Brief on CNC Machining

If you’ve ever been in a workshop, it’s likely you’re familiar with how metalworking machines work. Nonetheless, the advancements of technology and software led to innovative high-precision CNC (computer numerically controlled) techniques.

CNC machining enables precision cutting operations to be performed accurately always. What’s more, CNC machining is one of the two ways in which engineers and machinists can create a physical item from a computer design file. The other procedure is 3D printing, which is also called additive manufacturing. And while CNC machining is a subtractive procedure, 3D printing is an additive process, which operates in reverse. With this in mind, here’s a brief on CNC machining to help you better understand the process.

What is CNC Machining?

CNC Machining is a production process involving a pre-programmed software, which instructs the movement of machinery and factory equipment. It can control complex machinery, from lathes and grinders to routers and mills. What’s more, with CNC machining, 3D cutting tasks can be performed in a single series of commands.

How Does CNC Machining Work?

To activate a CNC machining process, you should program the desired cuts into the software and the machine perform the dimensional tasks as established. The machines are operated through numerical control, as a software program controls an object. Further, CNC machining is based on G-code language which is written to guide the corresponding machine’s speed, coordination and feed rate. What’s more, CNC machining allows you to pre-establish the position of the tool and its speed, which run according to software in predictable and repetitive cycles. First, 3D or 2D CAD files are made, which are translated to code so the CNC system can execute them. And after the input of the program, the operator starts a trial run to check for any errors or mistakes in the coding.

Difference between Open Loop and Closed Loop

The position control is established through open or closed-loop systems. In the case of open-loop systems, the signalling is done in one direction from the controller to the motor. In contrast, in a closed-loop system, the controller can receive feedback, which makes allow for error correction. So, a closed-loop system facilitates the correction of irregularities in position and speed. In today’s industry, 3 4 and 5 axis machines are common place. And today’s CNC protocols allow the production of parts via automated pre-programmed files. The exact dimensions are determined by CAD software and converted into finished products with CAM (Computer Aided Manufacturing) software.

The Bottom Line

CNC machining is a critical function in the production sector, from the manufacturing of computer hardware to auto or aerospace parts. Additionally, without the high-tech capacities of CNC machinery, a variety of components and parts included in household products couldn’t be produced.

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