A Complete Guide To CNC Precision Machining

Everything You Need To Know About CNC Precision Machining

Precision is an essential aspect of high-quality machining. It is crucial for producing specific items with tight tolerances and attractive surface finishes. Almost every industry relies on CNC precision machining to provide high-quality custom-machined parts that satisfy specifications. Let’s go over the specifics of precision CNC machining and how it can help your project.

CNC Precision Machining

What Is CNC Precision Machining?

CNC precision machining is the process of shaping raw materials into desired products using Computer-Aided Manufacturing plans. It is a subtractive process that removes surplus material from various materials using various production procedures.

Precision CNC machining is now a necessary aspect of the manufacturing process. This procedure frequently needs the involvement of skilled designers and professional engineers. This is required when manufacturing elaborate pieces with complex shapes requires advanced tools. A typical CNC machine’s tolerance standard is +/- 0.005 in. (0.13mm). It can be as little as +/-0.002 in CNC precision machining. (0.051 mm) ~ Ā±.0002 in. (0.005mm).

Precision machining is the way to go if your project entails making vital components for demanding applications.

How Many Types Of CNC Precision Machining Equipment Are There?

Precision CNC machining entails numerous procedures. As a result, various pieces of equipment are required for quality work. In certain circumstances, the tools are assembled on a single CNC machine. In such circumstances, the machinist will just need to start and stop the machining process.

In some cases, the machinist must position the tools on multiple CNC machines. In that instance, the material or workpiece will have to be moved from one machine to another. The following CNC machines are utilised for effective CNC precision machining:

Drilling Machine

1. CNC Milling Machines

CNC milling is a precision machining procedure that involves removing superfluous material from workpieces with rotary cutters. Various mills are used in this manufacturing process. Chamfer mills, helical mills, and end mills are examples of mills. Hand milling machines, universal milling machines, universal milling machines, and plain milling machines are also examples of computer numerical control-enabled devices. These milling machines can be oriented horizontally or vertically.

2. CNC Turning Machines

One more precision CNC machining procedure that involves the rotation of the object next to a cutting tool is turning. Cutting tools are frequently rotating single-point equipment. CNC lathes are among the most often used CNC turning tools. Engine lathes, engine-purpose lathes, and turret lathes are examples of these lathes. Taper and straight turning devices, threads, and external grooves are also utilised in turning.

3. CNC Drilling Machines

Drilling is the process of making cylindrical holes in workpieces by employing rotating drill bits. Drill bits are multi-point instruments that ensure accurate machining.

Its layouts also verify that the raw material’s chips wither away from it. You can be certain that the drilled holes are nice this way. Drill bits often used in CNC machining procedures include:

  • Spotting Drills: Making pilot or shallow holes.
  • Screw Machine Drills: Used to create non-pilot holes.
  • Peck Drills: They aid in the reduction of workpiece chips.
  • Chucking Reamers: Used to enlarge previously drilled holes.
  • Drill Presses: These tools aid in specialised drilling jobs.
CNC Machining

4. Wire EDM (Electrical Discharge Machining) Tools


Electrical Discharge Machining (EDM) is a precise CNC machining technology that uses sparks of electricity to produce the desired result. The tooling electrode and the workpiece electrode are both part of a wire EDM system.

These electrodes are separated by a dielectric fluid and are subjected to an electrical voltage. The procedure is also known as spark machining, die sinking, wire erosion, or spark eroding by some machinists. It is particularly effective in producing complicated pieces for a variety of applications. The best CNC machine for your project will be determined by the part’s complexity and shape, as well as the material. Because the cutting tool will make touch with the rotating workpiece, a cylindrical part, for example, is an excellent candidate for a CNC lathe. 5-axis CNC machining, on the other hand, is excellent for more complex items with varying geometries.

Applications Of CNC Precision Machining

Precision CNC machining is gaining popularity in the manufacturing industry due to its low cost, quick turnaround time, versatility, and general product quality. CNC machining applications and benefits are beneficial in the following industries.

CNC Machining Medical

Medical Industry

The healthcare industry is constantly evolving, necessitating the development of new instruments. Aside from the creation of new tools, there is also a demand for large quantities of existing equipment. One of the areas that need strict standards is the medical business. Orthotic devices, MRI machines, implants, secure enclosures, research equipment, and other items fall into this category. Precision CNC machining enables this.


Automotive Industry

The automobile industry is one of the most transformed nowadays. With the current automotive revisions, new automobile inventions appear to emerge every day. However, before incorporating these elements into the manufacturing process, prototypes must be created. As a result, automakers prefer CNC precision machining to produce prototypes to exact specifications. It also manufactures trucks, shipping vessels, and other modes of transportation.


Aerospace Industry

Aerospace vehicles, whether planes or space shuttles, require extreme precision because any error may be catastrophic. Thus, CNC precision machining aids in the production of a variety of products in this industry. Bushings, landing gear ports, airfoils, manifolds, and other components fall into this category.


Military and Defense Industry

Nations around the world now have a variety of different designs for their defence systems, with computer numerical control manufacturing becoming increasingly important. The exact manufacturing process aids in bringing these innovative concepts to life using various techniques and materials. Transportation components, plan pieces, ammunition, communication parts, and other items are manufactured for this industry.

Electronics Industry


As the downsizing trend in consumer electronics continues, components are becoming smaller and more powerful. These components are likewise designed to be lightweight and compact.

Precision CNC machining can handle the essential materials in high-volume production runs while maintaining exceptionally tight tolerance for even the smallest component. CNC machines are capable of developing and producing a wide range of production parts for the electronics industry. Consumer electronics, semiconductors, circuit boards, heat sinks, and other components are examples of components.

Materials Used For Precision Machining

CNC precision machining produces high-quality, extremely precise products from a wide range of materials. Here are some materials that are suitable for precise CNC machining:


Precision machining is useful for a wide range of metals, regardless of their strength or hardness. The modern technologies employed in this procedure provide effective metal shaping and machining. The following metals are the most commonly used for precision CNC machining:

  • Aluminium (6061, 6061-T651, 7075, etc.)
  • Stainless Steel
  • Steel
  • Aluminum
  • Copper
  • Brass
  • Bronze
  • Titanium
  • Exotic Metal Alloys


Basic plastics or tailored plastics could be utilised as precision CNC machining raw materials. Regardless of your decision, the method provides flawless operation at a cheap cost. Plastic CNC machining materials include the following:

  • PMMA
  • ABS
  • PC
  • POM
  • PA

Advantages Of Precision CNC Machining Services

Precision CNC machining services generate components to far higher standards than normal machining. It is the optimum choice for meeting strict specifications and tolerance levels. Some of the benefits are as follows:

Tight Tolerances and Repeatability

Manufacturers may make items with tolerances as low as +/-0.0001 inches with the correct machines and equipment. This guarantees that these parts will easily fit into the applications planned. Furthermore, the correct manufacturing partner with sufficient capabilities ensures repeatable machining of parts with the same tolerances. This advantage contributes to customer trust.

Increased Volume and a Wide Array of Applications

Precision CNC machining services may accommodate high production volumes. It is ideal for prototyping, high-volume production runs, and blanket orders.

The versatility of CNC machining with various materials is likewise astounding. This method works flawlessly with aluminium, iron, stainless steel, steel, brass, and a variety of other materials. It is also suitable for numerous types of polymers. Its capacity to aid a variety of industries, including automotive, medical, aerospace, and defence, makes it extremely important. As a result, regardless of size, your company may compete in custom-designed part manufacturing.

High-Quality CNC Technology

Computer-aided manufacturing (CAM) or computer-aided design (CAD) is used in CNC precision machining (CAD). These cutting-edge technologies manipulate the equipment to mould the workpiece to the intended outcome.

Reduced Cycle Times and Lower Labor Costs

Machinists are frequently required to programme machines and change the ideal speed and tooling in traditional machining. Precision CNC machining, on the other hand, necessitates a high level of automation. Most of the time, the operator is simply required to start and control the device. This has a net beneficial impact on turnaround times and labour costs.

Improved Part Quality

When it comes to item quality, CNC precision machining is unrivalled. These computer numerical control machines use powerful software to match design parameters, even on complicated parts, in a reasonably seamless manner.

Rigorous testing of the parts guarantees that these meet and exceed the expectations of the clients. It comes as no surprise that precision machining firms boast improved part performance. Many countries regard it as the greatest choice for their industrial applications as well.


CNC precision machining is among the most efficient methods for producing custom-machined items. It allows for little margin for error while creating products with tight tolerances and complex standards. You should incorporate it into your projects as a manufacturing process. NabTech Engineering provides a comprehensive variety of precision machining services. For various projects, we use 3-, 4-, and 5-axis CNC machines. You can count on us for high-quality CNC Machining Parts. Our skilled staff has considerable knowledge and appropriate field experience.