Custom CNC Machining Service

Why Choose Our CNC Machining Service

Are you looking for precise metal and plastic parts for your project?  Here is why you should choose CNC machining services.

• Automation and Speed

High levels of CNC automation lead to faster production cycles. Meanwhile, automated tool changes and programmed instructions allow rapid production of complex parts.

The Principle of CNC Machining

CAD Modeling

The CNC machining service with the creation of a detailed 3D model, including all geometrical features,  dimensions, tolerance, annotations, labels, etc. The designer often uses tools like AutoCAD and SolidWorks. You can also directly send the design to the manufacturer if you need custom machining.

G-code Instructions

G-codes are digital instructions about feed,  tool movement, coordinate position, cutting depth, and speed. They are created with CAM or other similar software. Additionally, M-codes are needed for auxiliary function control. Then, these codes are uploaded to the CNC machine’s controller, ready for execution.

Machine Setup

In machine setup, the workpiece is securely clamped or mounted onto the machining bed or in a fixture. Meanwhile, a suitable tool is set on the spindle. Here, the setup can differ on the machining method, like CNC turning,  milling, and turn-milling.  The tool selection depends on the equipment type and desired geometrical features. For example, end mills are ideal for complex profiles, whereas you need to use boring tools for enlarging the holes. Basically, every tool has its own capabilities.

Machining Process

On tool and workpiece and tools are set, then, the coordinates are fixed and the CNC controller executes the codes. It might process cutting, facing, drilling, and other operations to form the final shape. Moreover, it requires continuous monitoring and adjustment of variables if required.

Post Processing

CNC machining services often include post-processing and surface treatments. This step is crucial for achieving the tight dimensions and the desired set of surface properties, including aesthetics.

CNC Machining Materials Options

The properties of final parts or products depend on the material type. Therefore, CNC machining material selection is critical for any project. Make your choice based on requirements,  metals, plastics, or composites.

You have a lot of options for CNC metals such as aluminum, stainless steel, brass,  titanium, etc. Consequently, each of these metals has different alloy grades with unique composition and properties. Meanwhile, You can machine CNC plastics like ABS, Acrylic, PEEK, PC, etc.

Metal CNC Machining 

Aluminum Alloys

Aluminum alloys are known for being lightweight, having corrosion resistance, excellent thermal conductivity, and strengths (vary on alloying elements).  They are highly machinable and offer high production speed.  

• Grades: 2007, 2017A, 5083, 6060,  6061,  6082, 7075, etc.  
• Applications: Aerospace components, automotive parts, sheet metal products, structural parts.

Stainless Steel Grades

Stainless steel is one of the most common metals used in CNC machining. Steel alloys provide corrosion resistance, high mechanical strength, ductility, and excellent machinability. 

• Grades: 303, 304, 316L,  316Ti,  304L, etc. 
• Applications: High-strength and durable parts for automotive, food processing, medical equipment, etc.

Steel Grades

Steel grades provide high tensile strength, good plasticity, and varying hardness & ductility.  The machinability also varies on particular alloy grades. Steel CNC machining produces durable, wear-resistant, high-strength, and heat-treatable parts. 

• Grades: S235JR, C45, C40, S355J2G3, 90MnCrV8, 16MnCr5, 25CrMo4, 42CrMo4, etc. 
• Applications:  Automotive parts, machinery components, structural applications, tool and die manufacturing.

Brass Grades

Brass is a copper alloy that offers good conductivity, formability, strength, and corrosion resistance. Brass grades are also easy to machine and the machined parts can be solder and braze. easily.

• Grades: Ms58 / CuZn39Pb3
• Applications: Electrical and thermal components, decorative items, etc. 

Titanium Grades

Titanium grades are renowned for exceptional strength-to-weight ratio, corrosion protection, and biocompatibility. The machining of titanium is used for lightweight and durable parts that can withstand harsh environments.

• Grades: Grade 2 / Grade 5 (Ti-6Al-4V)

Applications:  Aircraft structural parts, medical implants, oils and gas structures, and high-stress components. 

Plastic CNC Machining 

ABS

ABS is popular in CNC machining due to its high tensile strength and toughness. It can create parts with excellent impact-resistant,  wear-resistant, flame retardantdency, and also leaves good as a machined finish. It is often used as a metal replacement in some automotive and marine applications. 

Acrylic

Acrylic or PMMA is a transparent and tough thermoplastic with excellent surface hardness, weather resistance, wear and abrasion resistance, and chemical inertness. The machining of acrylic surfaces can weaken the transparency, but further surface polishing can achieve that. Acrylic is ideal for applications requiring optical transparency or as a cost-effective alternative to polycarbonate.

PC (Polycarbonate)

Polycarbonate is also a transparent plastic but is more durable and shatterproof, than acrylic. It is a UV-stabilized and flame-retardant material.  While machining, the PC is prone to stress cracking and requires slow feed rates and sharp tools The use of Polycarbonate machining is widespread, in food and beverage,  packaging, medical devices, eyewear, electronics, etc.

PEEK

It is high-performance CNC plastic with excellent mechanical strength, fatigue resistance, chemical resistance, and thermal stability. But it can be more expensive than other plastic materials. Some application examples include tubes, bearings, seals, valves, and medical implants.

Polypropylene (PP)

Polypropylene is a CNC plastic material used in applications requiring high elongation and low flexural modulus. It has a transparent black-and-white appearance. Machining PP is mainly used for prototypes and large-size products like storage items.

CNC Machining Material Guide

Comparison with Other Manufacture Processes

CNC Machining Vs 3D Printing

3D printing is additive manufacturing that builds by adding successive material layers based on the provided CAD design. It is fast and simple in terms of tool setup and process handling, but the parts compromise the structural strength. 3D printing is ideal for the initial stages of testing prototypes.

Technology Overview

Different types of CNC Machining

Numerous (10+) types of CNC machines are designed for specific machining operations. For example, CNC milling creates complex geometries that allow up to six-axis machining. Milling rotates the workpiece and removes the tool following the uploaded drawing and command. CNC routers are functionally similar to CNC milling machines. Still, they are used for softer materials such as aluminum, wood, and plastics—the CNC routing machine routes the spindle and tool path.

CNC Turning is primarily used for cylindrical workpieces, and it renovates the material from the outer surface of the rotating workpiece for facing, chamfering, and other operations. Its caliber is generally measured by rotating speed. CNC plasma cutters use electronically ionized gas (plasma) to cut the workpiece precisely. The plasma beam strikes the metal and cuts it, even though the plasma temperature can reach 10,000 degrees Celsius.

The process of CNC machining

CNC machining is a type of manufacturing in which computer software dictates the movement of tools and machinery. CNC machining can control various complex machinery, including grinders, lathes, mills, and routers. Three or more dimensional cutting tasks can be completed using a single set of prompts with CNC machining.

Under CNC Machining, Machine tools function through numerical control. A computer program is customized for a workpiece. The machines are programmed with a CNC machining language called G-code that essentially controls all features like feed rate, coordinate, location, and speeds. In addition, the computer controls the exact positioning and velocity of the operation.

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