CNC Machining - Custom Metal Parts Manufacturer

What is CNC machining?

CNC machining is a manufacturing process that involves using high speed, computer-controlled, precision machines to remove plastic or metal from a blank, a block of metal or plastic, to create a part. The process is subtractive, meaning the machine removes material from the blank to reveal the final part. Since the machine is computer controlled, the process is highly repeatable, resulting in the same identical part each and every time.

A CNC machine is given a specific set of code. The code tells the machine where and how to cut material from the blank. The CNC machine code contains a list of instructions on how to create the part. The instructions are part of a Computer Aided Design (CAD) file that contains the code needed to create the part. The code will first tell the machine where to place the tooltip, then how fast the tooltip should spin, and finally to what coordinates the tooltip should move. CNC machines use coordinates on a set axis. We use multi-axis CNC machines, allowing parts to be cut on the X-, Y-, and Z-axes. CNC machines cut parts with extreme precision. Since the machine is computer controlled, each successive part will be exactly the same as the first, making replication fast and easy.

CNC Machining Processes

CNC Milling

CNC mills are capable of running on programs comprised of number- and letter-based prompts that guide pieces across various distances. The programming employed for a mill machine could be based on either G-code or some unique language developed by a manufacturing team. Basic mills consist of a three-axis system (X, Y and Z), though most newer mills can accommodate three additional axes.

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CNC Turning

In lathe machines, pieces are cut in a circular direction with indexable tools. With CNC technology, the cuts employed by lathes are carried out with precision and high velocity. CNC lathes are used to produce complex designs that wouldn’t be possible on manually run versions of the machine. Overall, the control functions of CNC-run mills and lathes are similar.

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CNC Drilling

CNC drilling services produce precise round holes or threaded defects, typically for machine screws and bolts. Drilling can produce CNC drilled parts in metal, hard plastics, wood, and most other rigid materials. There are several types of drilling machines available for CNC, including these: upright, table, and radial.

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CNC Machining Advantages

The main advantages of CNC machining include the production of complex precision machined parts with high precision while keeping economic production cost. CNC machining contributes to overall accuracy and is a reliable and mature technology that greatly eliminates the possibility of human error. Additionally, operational staff can focus on quality assurance and supervise project during the production process, which helps ensure that the detailed requirements of the production process are met. In terms of cost reduction, CNC machining not only reduces costs by reducing the need for skilled operators, but also reduces the total amount of material wasted.

CNC Machining Parts Made By TIANHUI

What Metals Are Used in CNC Machining?

Aluminum: aluminum is probably the most widely used CNC milling material. The high machining speed of CNC aluminum machining makes aluminum a more useful material for CNC manufacturing. Aluminum is widely used in the production of aircraft parts, automobile parts, bicycle frames, and food containers because of its lightweight, non-magnetic, corrosion resistance, and low price.
Stainless steel: stainless steel alloys are not affected by most stains and rust. The material is favored for its strength and corrosion resistance and can be used in anything from surgical equipment to electronic hardware. Stainless steel is a widely used CNC machining material, which is strong and durable, expanding its application in various industries.
Carbon steel: carbon steel is also one of the popular materials used in CNC machining. It has a variety of types to choose from depending on your application requirements. Due to its durability, safety, long shelf life, economic and environmental protection, the material is mainly used for CNC metal machining.
Brass: brass is widely regarded as one of the easiest and most cost-effective materials for precision machining services. It is selected to manufacture complex parts requiring complicated functions. Brass is easy to process, smooth and clean. It can be used to manufacture medical equipment, consumer goods, electronic hardware and contacts, accessories, commercial products, etc.
Titanium: titanium is heat-resistant and corrosion-resistant, which makes it a feasible choice for many industrial applications. Titanium is not affected by salt and water. It is widely used in the manufacture of medical implants, aircraft parts, and jewelry.
Magnesium: magnesium is the lightest structural metal widely used by precision machining service providers. Magnesium has excellent machinability, strength, and robustness, which makes it very suitable for many industrial applications.

Get consistent quality every time you use our CNC machining services

Tianhui Machine guarantees the quality of every part we manufacture. In addition to thoroughly vetting the manufacturing partners we work with, every order is dimensionally and visually inspected according to Tianhui Machine standards. When necessary, orders manufactured globally also receive a second inspection at our office in Ningbo.

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CNC Machining Factory

Precision machining is the process of cutting metal parts to make them suitable for the end user’s application and function. Many modern machining processes are performed by computer numerical control (CNC), in which computers are used to control the movement and operation of milling machines, lathes, and other cutting machines. This precision manufacturing method, also known as CNC machining, plays a vital role in modern manufacturing, especially for some high-precision machined parts.

For some applications, castings or forgings alone can achieve the required tolerance and surface requirements without machining. However, in most cases, machining is required to meet the customer’s unique specifications and ensure that the finished metal part can work properly with other parts. Even investment casting parts that have better surface and tolerance grades than other metal forming processes still require additional machining processes.

In order to ensure the high quality and high precision of the finished machined parts, computer programs are essential. Computer-aided design, or CAD for short, and computer-aided manufacturing, or CAM for short, are both used as programs that provide detailed instructions for each step of the precision machining process. Programs such as SolidWorks, ProE, and UG create extremely detailed 3D models.

With advanced CNC machines and horizontal and vertical type 4-axis machining centers, Tianhui Machine specializes in manufacturing OEM custom machining parts according to customers’ drawings using machining centers, CNC machines and other special tools with strict tolerances and surface roughness required. Ferrous and non-ferrous metal castings are processed in our machining plant, which can help us have a huge advantage in controlling cost and quality.