What are the Different Types of Precision CNC Machining?

What are the Different Types of Precision CNC Machining?

Manufacturing Technology Insights | Tuesday, June 29, 2021

Precision CNC machining offers a wide range of production capabilities for components and finishing in the manufacturing environment.

FREMONT, CA: CNC machining is a broad term that involves a wide range of machining applications. CNC stands for Computer Numerical Controlled and indicates the machine's programmable characteristic, which allows it to do various tasks with minimal human intervention. CNC machining is the process of fabricating a component with the help of a CNC controlled machine. In addition, the word refers to a group of subtractive manufacturing procedures involving removing material from a stock workpiece or bar to create a final part.

These procedures are employed in various industries, like medical, aerospace, industrial, oil and gas, hydraulics, and firearms, and many more. Metal, plastics, glass, composites, and wood are among the materials that can be CNC machined.

CNC machining has numerous advantages over machining that isn't CNC programmable. Reduced cycle times, faster finishes, and the ability to execute numerous features at once can all help to enhance quality and consistency. It is well suitable for medium and high-volume applications requiring accuracy and complexity.

CNC Lathes and Turning Machines

The capacity to rotate (turn) materials during the machining process distinguish CNC lathes and turning machines. These machines' cutting tools are fed in a linear motion around the revolving bar stock, eliminating material until the required diameter (and feature) is accomplished.

Drilled holes, bores, reamed holes, slots, tapping, tapers, and threads can all be created on the component using CNC lathes and turning machines. Likewise, screws, bolts, shafts, poppets, and other components are manufactured on CNC lathes and turning centers.

CNC Milling Machines

CNC milling machines are distinguished by their capability to rotate cutting tools while keeping the workpiece or block of material motionless. In addition, they may mill different shapes, such as face-milled and peripheral-milled features (deep cavities such as slots and threads).

CNC milling machine components are generally square or rectangular in shape and have numerous features.

CNC Laser Machines

A pointed router that has a highly focused laser beam is used in CNC laser machines to cut, slice, or engrave objects precisely. The laser heats the material, causing it to melt or vaporize and cutting a hole in it. The material is usually in the form of a sheet, and the laser beam goes back and forth over it to generate a precise cut.

This method may create a broader range of designs than traditional cutting machines (lathes, turning centers, mills), and it frequently results in cuts or edges that don't require additional finishing.

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