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Types of CNC Machining

CNC machining is a broad term covering a wide range of computer-guided processes. Some of these include:

Drilling

Drilling relies on the use of multi-point drill bits to create cylindrical holes. The CNC machine follows programmed instructions, precisely controlling the drill bit and feeding it into the surface of a workpiece to produce vertical holes. In some cases, angular drilling can be achieved through specialized machine configurations, tooling, and work-holding devices such as tapping, reaming, countersinking, or counterboring.

 

Milling

The milling process is reductive, which means it removes material from the workpiece using rotating multipoint cutting tools. While manual milling requires that the workpiece be fed into the machine in the opposite direction of the cutting tool’s rotation, a CNC machine can achieve precise cuts while moving the workpiece in the same rotational direction as the cutting tool. CNC milling is a diverse process, providing related capabilities such as:

  • Face milling. This process is used to cut flat surfaces, or to cut cavities with flat bottoms into a workpiece.
  • Peripheral milling. Peripheral milling is used to cut much deeper cavities, such as threads and slots.

Turning

Turning is also a reductive process that uses one or more single point cutting tools to remove material from a workpiece. The CNC turning machine—also commonly known as a CNC lathe—rotates the workpiece, and the cutting tool removes material around the circumference based on its programmed instructions. This process is typically used to create cylindrical parts.

The CNC turning process can perform multiple functions, such as:

  • Boring
  • Facing
  • Grooving
  • Threading

Other CNC Machining Operations

There are a variety of other processes that can be controlled using CNC processes.

  • Broaching
  • Sawing
  • Grinding
  • Honing
  • Lapping

Materials

CNC machining processes can be used to cut nearly any metal, as well as a variety of other material types, such as:

  • Aluminum
  • Brass & copper
  • Composites
  • Exotic metals/alloys
  • Precious metals
  • Plastics/polymers
  • Stainless steel
  • Steel
  • Super hard specialty alloys

Industries Served

A variety of industries and applications rely on CNC machining for the production of critical parts and components. Whether it’s the siding for a plane or a massive part designed to be installed in a tractor, CNC-machined parts are a critical part of:

  • The automotive industry (automobile frames)
  • The aerospace industry (airplane engine components)
  • The construction industry (building components)
  • The agriculture industry (hand tools, garden tools)
  • The medical industry (medical devices, surgical equipment)

Benefits of CNC Machining

Precision Machining & Fab offers CNC machining services for the fabrication of high-precision, high-accuracy products. We can also achieve cost-effective manufacturing on one-off and medium-volume production runs.

Our 40,000-foot facility houses an expansive fleet of available machines, so we are well-equipped to handle all your CNC machining needs, including rush jobs. Our equipment is vertically integrated and our value-added capabilities go well beyond machining, with a range of services from cutting to painting and powder coating.

Our machining capabilities and tooling, along with ISO 9001:2015 and AS 9001 certifications, render us the ideal choice for virtually any CNC machining need. Please don’t hesitate to contact us for assistance with upcoming projects.