Precision CNC Machining Services Company

What Is CNC Machining?

CNC stands for Computerized Numerical Control. CNC machining generally refers to precision machining. To be more precise, CNC precision machining is a subtractive manufacturing process that uses various precision cutting tools and machines to remove raw materials to make certain parts or components. CNC machining is suitable for a wide range of materials such as titanium, aluminum, stainless steel, brass or copper and surface finish, which can all be achieved by China CNC machining supplier LJZ. CNC Machining finds application in a variety of industries, for example: cnc machining prototype, cnc machining aerospace parts, aerospace cnc machine and so on.

As a reliable custom precision CNC machining company in China, LJZ has experienced engineers that are able to machine different types of materials such as titanium, brass/copper, through our CNC machining and formulate suitable process for each product. CNC machined products' accuracy can be controlled between 0.01 and 0.005 (mm) to meet your precision requests. If you take interest in china cnc machining service, do contact us for more information, and we are sure that LJZ, one of the most professional China precision cnc machining suppliers would provide you with the most satisfied China cnc machining service.

CNC Machining Process

CNC（Computerized Numerical Control）machining, also known as precision machining. CNC machining process is simply the combination of CNC machine and Computerized Numerical Control systems. By input program, CNC machine works under the control of computer to obtain high quality, high precision and complex machined products. LJZ precision CNC machining process includes CNC milling, CNC turning, Grinding, EDM/Wire EDM, etc.

① Drawing analysis: analysis CAD model, i.e. 2D&3D drawings, choose the best machining process.

② Programming: convert CAD files into CNC programs, program can be simply understood as the language that CNC machine can read. Input program into CNC machine.

③ Setup: check and calibrate CNC machine and tools, and setup tools and raw material in CNC machine.

④ Operating: CNC Operators start machines to make the drawings into products.

CNC Machining VS 3D Printing VS Injection Molding

CNC VS 3d Printing and CNC Machining VS Injection Molding are topics which many people want to know, today LJZ China CNC Machining Supplier will take you on a quick journey into the world of CNC machining and its related technology. There are five aspects we will talk about:

① Processing method;

② Material selection;

③ Speed;

④ Cost;

⑤ Precision.

First, for CNC Machining:

• CNC machining usually uses subtraction. Use a fast rotating tool to remove unwanted material from the raw material.

• CNC can use a variety of materials, and almost all solid materials can be processed with CNC.

• Small batch processing takes longer than 3D processing. However, CNC processing time is particularly advantageous in large batches.

• For volume orders, CNC production costs are lower.

• The finished parts have high precision and excellent surface quality.

Then, for 3d Printing:

• 3D printing usually uses addition. Create products layer by layer with 3D printing materials on a blank panel.

• Most of the materials used for CNC can also be used for 3D printing. However, 3D printers which can process metals are very expensive.

• The processing time of large batches is longer than that of CNC. However, 3D printing processing time has advantages in small batches.

• For small batch orders, 3D printing costs are lower.

• The finished parts have low precision and poor surface quality.

  
  

Last, for Injection Molding:

• Injection molding is to dissolve the granular plastic, and then press the liquid plastic into the mold through high pressure. The corresponding parts can be obtained after cooling.

• Thermoplastic and thermosetting plastics are generally used, such as ABS/PE/PC/nylon/TPE/rubber and other daily plastics.

• It is suitable for mass processing, but needs to make molds. Compared with CNC processing, the delivery time of injection molding is longer.

• Large batch processing has great advantages, and the single piece price is low. However, there is mold cost.

• The surface precision is extremely high, and the shape error of the same batch of products is very small.

CNC Machine Design

1. A 90 degree internal angle is recommended to be changed to an arced R angle. Due to the characteristics of CNC CNC tools, it is difficult to machine 90 degree right angles. Therefore, we usually recommend our customer change the design to R angle. Or use EDM to make 90 degree right angles, but at a higher cost.

2. Keep the ratio of drilling depth to diameter less than 8. Even for special drills, it is difficult to maintain strict tolerances during production.

3. Increase the depth of design by 25% when drilling blind holes. if the design depth isn't enough in production, there will be a drilling point at the bottom of the part.

4. Avoid thin walls as much as possible. It is difficult to control the tolerance of thin wall. It is suggested to increase the wall thickness appropriately. Or EDM can be used with high cost.

5. Share with us the purpose and the functionality required of the part. We are pleased to recommend the most suitable raw material and processing plan for you.

Benefits of CNC Machining

• Fast delivery time

• Stable High precision

• Machinable complex parts

• High processing efficiency

• New product R&D and shape modification