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CNC Milling parts/CNC milling Service YI HITECH delivers CNC milling services, precision engineering and metal fabrication to customers around world customer. YI HITECH produce precision milling parts from a full spectrum of materials including aluminum, plastic, stainless steel, tool steel, copper and brass. We house milling machines dedicated to producing single one-offs or full production runs. These can be delivered quickly, efficiently and with short lead times. Send us CAD files, receive an instant CNC milling quote. We are free for instant quote and manufacturability review that will identify any difficult-to-mill features. What is CNC milling? CNC milling is the process of machining using rotary cutters to remove material by advancing a cutter into a work piece, that used to be done varying direction on one or several axes. CNC milling is also 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 machine cutting tools to reach the final shape. Full name of CNC milling is Computer Numerical Controlled milling. CNC milling is a digital manufacturing technology and produces high-accuracy parts with excellent physical properties directly from a CAD file. It is one of the most commonly used processes for machining custom parts to tight tolerances. Table 1 鈥?Characteristics of Milling Machines by Axes of Motion Note 1: If applicable, "A&" indicates advantageouscharacteristics and "D&" indicates disadvantageous characteristic. Note 2: Some millingmachine (by axes) information courtesy of Technox Machine & Manufacturing Inc. Number of AxesCharacteristics 3Capable of managing most machining needs Capable of producing the same products as machines with more axes Suitable for automatic or interactive operation, cutting sharp edges, drilling holes, milling slots, etc. Simplest machine setup (A) Only requires one workstation (A) Higher knowledge requirements for operators (D) Lower levels of efficiency and quality (D) 4Capable of operating on materials ranging from aluminum and composite board to foam, PCB, and wood Suitable for advertising design, art creating, medical equipment creating, technology research, hobby prototype building, and industrial applications Greater functionality than 3-axis machines (A) Higher levels of precision and accuracy than 3-axis machines (A) More complex machine setup 3-axis machines (D) More expensive than 3-axis machines (D) 5Multiple axes configurations available (e.g., 4+1, 3+2, or 5) Suitable for aerospace, architectural, medical, military, oil and gas, and artistic and functional applications Greatest functionality and capabilities (A) Depending on config., faster operation than 3-axis and 4-axis machines (A) Highest levels of quality and precision (A) Depending on config., slower operation than 3-axis and 4-axis machines (D) More expensive than 3-axis and 4-axis machines (D) Overview CNC milling types 鈻?Face milling: cutting tool's axis of rotation is perpendicular to the surface of the workpiece. Generally, face milling is used to create flat surfaces and contours on the finished piece and is capable of producing higher quality finishes than other milling processes. Both vertical and horizontal milling machines support this process 鈻?Plain milling: known as surface or slab milling, the cutting tool's axis of rotation is parallel to the surface of the workpiece. plain milling application require to removal of a large amount of material from the workpiece 鈻?Angular milling: known as angle milling, cutting tool's axis of rotation is at an angle relative to the surface of the workpiece. to produce angular features, such as chamfers, serrations, and grooves. 鈻?Form milling: used to application to irregular surfaces, contours, and outlines, such as parts with curved and flat surfaces, or completely curved surfaces. CNC Milling Parts Process Like most conventional mechanical CNC machining processes, the CNC milling process adopt computerized controls to operate and manipulate machine tools which cut and shape stock material. In addition, the process follows the same basic production stages which all CNC machining processes do, including as below stage. 1. Designing a CAD model with 3D software 2. Converting the CAD model into a CNC program by CAM engineer. 3. Setting up the CNC milling machine 4. Executing the milling operation Advantages of CNC milling parts 鈥?Can produce parts of almost any shape 鈥?Cost-effective for prototyping and short runs 鈥?High dimensional tolerances are possible 鈥?Smooth finishes can be achieved 鈥?Greater throughput,5 times faster on average. 鈥?Multi machining processes on one fixture. 鈥?Greater precision can achieve at Typically 0.001 inch or better. 鈥?Store a library of programs to be used repeatedly, easily create multiple copiesand fewer man-hours needed. 鈥?Complex parts can be made with the versatile milling tools Common Materials for CNC Milling Parts YI HITECH work with a wide range of plastic and metal materials to make parts for prototypes, low-volume, and mass production run, or by injection molding and die casting process. We can provide you with customized raw material as required. Metals 1. Aluminum 2. Stainless steel 3. Brass 4. Mild steel 5. Alloy steel 6. More metals as request Plastics 1. ABS 2. Polycarbonate 3. Nylon 4. PTFE (Teflon) 5. POM (Delrin) 6. More custom materials as request CNC milling parts surface finishing 1. Anodizing Anodizing is mainly applied to aluminum parts. Anodizing is the use of electrochemical principles to generate a layer of Al2O3 (alumina) film on the surface of aluminum and aluminum alloys. This layer of oxide film has special properties such as protection, decoration, insulation and abrasion resistance. 2. Electroplating for metal parts Electroplating is a technique in which a metal film is attached to the surface of a metal by electrolysis to prevent corrosion, improve abrasion resistance, conductivity, light reflection, and enhance appearance. There are most popular electroplating is Nickel plating, Zinc plating, Chrome plating, Brass plating, .etc. 3. Vacuum Metallizing for plastic parts Vacuum coating Methods that use evaporation or high-rate cathode sputtering processes are the best-known means of metalizing plastic components. 4. Powder coating Powder spraying uses powder spraying equipment (electrostatic spraying machine) to spray the powder coating on the surface of the workpiece. Under the electrostatic action, the powder will be uniformly adsorbed on the surface of the workpiece to form a powder coating; the powder coating is subjected to high temperature drying The baking leveling cures to a final coating with various effects (different types of effects for powder coatings). 5. Spray painting Spray painting is a painting technique where a device sprays a coating (paint, ink, varnish, etc.) through the air onto a surface. 6. Brushing Brushing finishing process is a kind of surface treatment method that forms a line pattern on the surface of the workpiece by grinding product and plays a decorative effect. According to the different lines after brushing can be divided into straight-line brushing, chaotic pattern brushing, corrugated, swirling pattern.The brushing process gives the metal surface a non-mirror-like metallic luster, while the brushing process also eliminates the tiny defect on the metal surface.Brushing is mostly used for stainless steel parts or before anodizing aluminum parts, even for electroplating parts as post-process after plating. 7. Shot Blasting: Sandblasting or bead blasting Sandblasting and bead blasting is powered by compressed air to form a high-speed jet beam to spray the material at high speed onto the surface of the workpiece to be processed so that the appearance or shape of the external surface of the workpiece surface changes, and a certain cleanliness and different roughness are obtained. 8. Polishing Polishing is the use of flexible polishing tools and abrasive particles or other polishing media to modify the surface of the workpiece. For different polishing processes: rough polishing (basic polishing process), medium polishing (finishing process) and polishing (glazing process), the use of a suitable polishing wheel can achieve the best polishing effect while improving polishing efficiency. Improve the dimensional accuracy or geometry accuracy of the workpiece to obtain a smooth surface or mirror gloss while eliminating gloss. 9. Etching Etching, also known as photochemical etching, refers to the removal of the protective film of the area to be etched by exposure to the plate, development, exposure to chemical solutions during etching, to achieve dissolution corrosion effect, the formation of uneven or hollow forming effect. Quality Assurance 鈥?ISO9001 certified Manufacturing Partners on request 鈥?Inspection report included in every order. Full dimensional inspection reports on request 鈥?Material certifications and test reports available on request 鈥?Strict NDA agreements with all Manufacturing Partners 鈥?Manufacturing Partner performance tracking on lead time and quality Simple process of ordering parts 1. Upload your files: drawing, 3D model or sketch 2. We provide a quote within 24 hours 3. You confirm the quotation and release order to us. 4. We start production immediately 5. When the parts are ready, our QA engineers verify the quality 6. We deliver your order 7. You pay after you received the parts and are satisfied with their quality Our Advantages 1) Design assistance and full engineering support during your product development. 2) Professional at OEM CNC parts. 3) Complete production lines for custom turning, milling, CNC machining sheet metal fabrication, stamping, bending, argon welding and surface treatment. 4) Advanced machine tools, CAD/CAM programming software. 5) Prototype machining capabilities in short lead time. 6) Strict quality control standards with a highly qualified inspection department. 7) Continually upgrading and advancing our equipment to remain competitive. 8) low volume high mix parts is also available. FAQ Q: What do I need for offering a quote? A: Please offer us 2D or 3D drawings (with material, dimension, tolerance, surface treatment and other technical requirement etc.) , quantity, application or samples. Then we will quote the best price within 24h. Q: What is your MOQ? A: MOQ depends on our client's needs, besides, we welcome trial order before mass-production. Q: What is the production cycle? A: It varies a lot depending on product dimension, technical requirements and quantity. We always try to meet customers' requirement by adjusting our workshop schedule. Q: Is it possible to know how is myproduct going on without visiting your company? A: We will offer a detailed products schedule and send weekly reports with digital pictures and videos which show the machining progress. Cases studyCNC Machining manufacturers website:http://www.yi-hitechs.com/cnc-machining/

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