What is Precision Machining?

Precision machining is a computationally programmed operation wherein CNCs are strictly triggered to produce machined parts with particular sizes and shapes. It’s a high-speed substrate process that starts with a material block. The material gets removed from the work-piece with the help of a cutting tool. This aims at achieving desired shapes, sizes, and assortment of parts that work together, including complex geometries and finishes.

Precision machining remains highly esteemed for producing resilient machined parts with repeatability and precision. The reduced rate of rejection also lowers production costs.

Additionally, its speed and efficiency are high due to high-speed CNC robotics and the elimination of secondary processes such as finishing.

Lastly, it is considered safe due to minimal risks of human errors. It only calls for workers to be more skilled in CNC designing and general workplace safety.



How Is Precision Machining Executed?


Step 1 – Designing the Graphical Model


The first phase might require you to do some CAD (Computer-Aided Designed) programs for preparing 3D and 2D models for machining. You may also sketch your starting point and digitize it later.


Step 2 – Conversion of CAM from CAD


The blueprints in your CAD must be turned into data for CNC machine processing. As such, you may use the Computer Aided Manufacturing software to convert the CAD data into cutting equipment coordinated and auxiliary functions (G and M codes).


Step 3 – Machine Set Up


Now that you have machining instructions, the next part will involve you configuring the machine tools and mounting the workpiece. In this step, you must select machining tools pertinent to the material and part design needed. Then, tighten the clamp and set the machining parameters.


Step 4 – Trigger the Machining Process


This step involves activating the CNCs to process the encoded machining codes. It should be noted that the machine runs the cutter tool automatically. Depending on the on-demand design, it can obtain the required material from the workpiece.


Step 5 – Completion


In this phase, the end product from the machining phase is removed from the machine. If necessary, it may go through grinding and polishing. Yet, precision machining products are needless secondary procedures.


What Equipment and Procedures Are Utilized for Precision Machining?


  1. Precision machining calls for specific processes, tools, and methods all created for a particular purpose. Refer to the portion below.
  2. CNC milling – Milling involves rotary blades to remove the machined component from the substrate. CNC routers and mills can also do 3-, 4-, and 5-axis procedures if complex forms and structures are needed.
  3. CNC Turning – CNC turning has the substrate spinning with a linear moving cutter tool which performs the extraction. But the commonly utilized during turning processes that produce cylindric items are CNC lathes.
  4. Grinder – Grinders are best used to create finishes and flat surfaces. They comprise the surface, cylindrical and centerless grinding.
  5. Electrical Discharge Machine – This technique features electrical sparks that may remove the workpiece material. It is effective when your design encompasses complex shapes and hard-to-cut materials.
  6. Swiss machining – When working with small diameters but still fancy accuracy, Swiss machining combines precision turning with milling, drilling, and tapping.
  7. CNC Lasers – The CNC lasers are sued for cutting and engraving different machining materials. They are best when machining complicated parts such as the ones for electronics, automotive and medical industries.
  8. CNC Turning Mills – With the capability of turning and milling in one apparatus, these machines make it easy to machine complicated parts with multiple features without changing your setup.


Quality Control in Precision Machining


Precision machining has its quality control mapwork to achieve accuracy and quality end products. This starts with metrology and measurement, where metrology tools like coordinate measurement machines, optical comparators, and profilometers evaluate the accuracy of dimensions.

Alternatively, statistical process control collects data on stages of production, deviations, and variations and analyzes them for potential issues during machining. Lastly, documentation and traceability allow quick inspection of results to see if they meet precision machining regulatory requirements.


Precision Machining Applications


Precision machining remains the spine of automotive applications. Going to aerospace, they make turbines, engine parts, and landing gear, while in the medical field, they manufacture implants, diagnostics, and prosthetics.

On the other hand, Electronics is benefiting through connectors, housings, and heatsinks. Finally, they are employed in the defense industry to manufacture rifles, automobiles, radar networks, and communication devices.


Final Thoughts


Precision machining, though intricate, can be underrated when it comes to forming highly resilient metal parts. Again, through the use of CNC, their repeatability minimizes errors, improves efficiency, and saves costs in the long run.

Scroll to Top