CNC Machining suppliers

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Создавать темы 06-Апр-2021 10:35

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Precision CNC Machining
YI HITECH offer precision CNC machining services in china to around world customer. With our high precision equipment and our professionalism, we can support our customer from their concept design to mass production, even you just need one piece we are also can support, YI HITECH is committing to provide low volume high-mix part that need integrated CNC machining service that include CNC milling process and CNC turning or lathe process service, secondary process, such as painting or plating ect.
What is CNC machining?
Precision CNC machining is a subtractive manufacturing process that parts are created by removing material from a solid block (called the blank or the workpiece) using a variety of cutting tools to reach the final shape. The solid block material is mainly metal or plastic. Full name of CNC machining is Computer Numerical Controlled machining, which is a fundamentally different way of manufacturing compared to additive (3D printing) or formative (Injection Molding) progress. CNC machining is a digital manufacturing technology and produces high-accuracy parts with excellent physical properties directly from a CAD file There are two main processes for CNC machining: milling and turning.
MillingEmploys rotating multi-point cutting tools
Workpiece fed in same direction as cutting tool rotation
Removes material from workpiece
Produces broader range of shapes
TurningEmploys single-point cutting tools
Rotates workpiece
Cutting tool fed along the surface of the workpiece
Removes material from the workpiece
Produces round or cylindrical parts
CNC Machining Support Software
The precision CNC machining process employs software applications to ensure the optimization, precision, and accuracy of the customized-designed part or product. Software applications includes CAD, CAM,CAE. Some integrated program software applications have combined all the aspects of CAD, CAM, and CAE software, allows a single software program to manage the entire fabrication process from design to analysis to production.
CAD: Computer-aided design (CAD) software are programs used to draft and produce 2D or 3D solid part and surface renderings, necessary technical documentation and specifications associated with the part as well.
CAM: Computer-aided manufacturing (CAM) software are programs used extract the technical information from the CAD model and generate a program to run the CNC machine and manipulate the tooling to produce the custom-designed part.
CAE: Computer-aided engineering (CAE) software are programs used by engineers during the pre-processing, analysis, and post-processing phases of the development process. CAE software is used as assistive support tools in engineering analysis applications, such as design, simulation, planning, manufacturing, diagnosis, and repair, to help with evaluating and modifying product design.
The CNC Machining Process
CNC Machining process itself is quite simple and our process involves the following steps.
1. Design stage: engineer first designs the product with CAD software to create 2D or 3D models of the parts you need making.
2. Programming: CAM engineer then turns the CAD file into a CNC program (G-code), which is the language used to program these machines.
3. Machine: Set up the machine with the correct tools and material.
4. Make the part: When everything is set up, the CNC machine system executes all instruction based on the program (G-code), removing material and creating the part.
Precision CNC machining Material options
The CNC machining process is suitable for a variety of engineering materials, including. The optimal material for selection to apply to a CNC manufacturing application is greatly dependent on the manufacturing application and its specifications, which can withstand the machining process鈥攊.e., enough hardness, tensile strength, shear strength, and chemical and temperature resistance
鈥?Metal material: stainless steel, brass, aluminum alloy etc.
鈥?Plastic matrial: PEEK, PTFE, nylon PA, PC etc.
Advantages Precision CNC Machining
1. No need makes big one-time investment at beginning of your project.
2. Vast variety of material selection that owns excellent material properties.
3. Highly accurate parts with tight tolerances.
4. Low Error, by using automation CNC machines process, The chances for error is extremely low as compared to human machining.
5. Consistent Product Quality, as high automation used by CNC
6. Easier Prototype testing during product development phase, Precision CNC machining offers your business an opportunity to explore smaller niche markets with low volume production.
7. Highly Efficient 鈥?CNC Machines feature an internal quality assurance detector, which makes the machining very efficient.
8. Quick turnaround times, Faster Production Cycles, it is feasible to run Small-to-medium production, to be flexible with changes due to industry regulations or customer requests
9. Increases Production Speed, CNC machining just to cutting material from block. It is the fastest Way to be reality.
Disadvantage of precision CNC machining
1. Relatively high start-up costs
2. Geometric complexity has a high cost
3. Tool access and work holding restrictions
CNC machining vs. 3D printing
When choosing between CNC machining and 3D printing, there are a few simple guidelines that you can apply to the decision-making process. Below table is assumed that all technologies are able to produce the geometry of the part in question. When this is not the case, 3D printing is generally the preferred method of manufacturing.
Scaling up production
No. of PartsPlasticMetal
1-103D printingCNC machining (consider 3D printing)
10-1003D printing and CNC machiningCNC machining
100-1000CNC machining (consider Injection molding)CNC machining (consider Investment casting)
1000+Injection moldingInvestment or Die casting
CNC Machining Surface Finishes
Surface finishes are applied after machining and can change the appearance, surface roughness, hardness and chemical resistance of the produced parts. Below is a quick summary of the most common finishes for CNC.
As machined
Our standard finish is "as machined" finish. It has a surface roughness of 3.2 渭m (126 渭in).Tool marks are visible.
Smoothing Polish
A finishing CNC machining operation can be applied to the part to reduce its surface roughness. The standard smoothing surface roughness (Ra) is 1.6 渭m (63 渭in). This can be decreased down to 0.4 渭m (15.7 渭in) upon request and on a case-by-case basis. Machine marks are less evident but still visible.
Shot Blasting
Shot blasting adds a uniform matte or satin surface finish on a machined part, removing the tool marks. This is used mainly for visual purposes and comes in several different grits which indicate the size of the bombarding pellets.
RequirementSpecification
Grit#100, #120 and #150
ColorUniform matte of raw material color
Part maskingIndicate masking requirements in technical drawing
Anodizing color or clear (type II)
Anodizing is mainly used to produce parts with a uniform, aesthetically pleasing surface and provides good corrosion and limited wear resistance.
RequirementSpecification
Thickness8 - 12 渭m (clear), 4 - 8 渭m (color)
ColorBlack, clear or any RAL code or Pantone number
Part maskingIndicate masking requirements in technical drawing
Anodizing hard coating
Anodizing provides excellent corrosion and wear resistance, suitable for functional applications.
RequirementSpecification
Thickness50 - 125 渭m
ColorBlack or clear
Part maskingIndicate masking requirements in technical drawing
Powder Coating
Powder coating is a strong, wear-resistant finish that is compatible with all metal materials and can be combined with a bead blasting to create parts with smooth and uniform surfaces and excellent corrosion resistance.
RequirementSpecification
Thickness18 - 72渭m
ColorBlack or any RAL code or Pantone number.
Part maskingIndicate masking requirements in technical drawing.
Electropolishing
Electropolishing is an electrochemical process used to polish, passivate and deburr metal parts. It is useful to reduce surface roughness.
RequirementSpecification
ColorNatural metal color.
Part maskingIndicate masking requirements in technical drawing.
Black oxide
Black oxide is a conversion coating used to improve corrosion resistance and minimize light reflection.
RequirementSpecification
ColorBlack.
Part maskingIndicate masking requirements in technical drawing.
Brushing Finish
Brushing finish is produced by polishing the metal with grit resulting in a unidirectional satin finish. Not advisable for applications where corrosion resistance is required.
RequirementSpecification
Surface roughness0.8 - 1.5 渭m
Grit#80-120
Part maskingIndicate masking requirements in technical drawing.
Application of precision CNC machinging
Our team works closely with every customer's project requirements, no matter the industry or size of the job. Examples of our precision machining can be found in:
鈼?Defense/Military
鈼?Medical
鈼?Aerospace/Avionics
鈼?Energy
鈼?Electronic enclosures
鈼?Custom projects
CNC Machining have been growing, becoming more and more advanced in recent years. Keeping up to speed or ahead of the curve is vital for your business in order to meet the demands of today's customers. get in touch with our friendly and helpful team today.
Case StudiesCNC Machining suppliers
website:http://www.yi-hitech.com/cnc-machining/
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