What is CNC Turning?
CNC Turning is a manufacturing process in which bars of material are held in a chuck and rotated while a tool is fed to the piece to remove material to create the desired shape. A turret (shown center), with tooling attached is programmed to move to the bar of raw material and remove material to create the programmed result. This is also called “subtraction machining” since it involves material removal. If the center has both tuning and milling capabilities, such as the one above, the rotation can be stopped to allow for milling out of other shapes.
How Does CNC Turning Work?
CNC turning lathe are used to produce precise turned parts with round or cylinder shapes, the finished product is complete, and does not need second operation on other CNC machining equipment. The CNC controller works with drive motor and make multiple components work together and move the shaft to complete designed motion according to the CNC programming.
1)Check out whether there is any faults and abnormal situations, make troubleshooting.
2) Upload the G-Code computer file to the CNC lathe.
3)Install a cylindrical material block and secured in the chuck.
4)Set the spindle at required speed, then to rotate the chuck and workpiece.
5)Check the rotating workpiece and spindle speed, ensure there is no discrepancy.
6)Move the tool turret and carriage to locate the cutting tool as specific feed
7)Move the carriage to perform the cutting operation, remove all excess materials to get final CNC lathe part.
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Benefits Of CNC Turning
Main benefits of the CNC lathes are their ease of setting, operation, repeatability and accuracy. They are designed to use the modern tools and after setting the machine it can continuously function for a long time under the occasional supervision of an operator. A CNC lathe is electronically controlled through a computer menu interface. The related program can be displayed on the machine, along with a virtual view of the process.
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CNC Machining Materials
Metals
Aluminum is a versatile material with properties that make it ideal for CNC machining. Aluminum has excellent machinability, welding and electroplating properties as well as good corrosion resistance. The metal is also characterized by a high strength-to-weight ratio and good temperature resistance. After machining, aluminum has a low risk of deformation or defects and is easy to polish and color.
Because of these properties, aluminum is a broadly used metal in many industries, including automotive, defense, aerospace, transportation, construction, packaging, electronics, consumer goods and more.
An alloy made up primarily of iron and carbon, steel is known for its high tensile strength and low costs. The combination of these characteristics has made it a ubiquitous material in the construction, infrastructure, automotive, maritime, tooling, manufacturing and defense industries, among others.
Stainless steel is the low carbon steel that offers many properties that are sought after for industrial applications. Stainless steel typically contains a minimum of 10% chromium by weight.
The material properties associated with stainless steel have made it a popular metal within a broad range of industries, including construction, automotive, aerospace and more. Within these industries, Stainless steel is versatile and is an effective choice for many applications.
Made up of at least 99.3% copper (Cu), copper alloys are characterized by excellent electrical and heat conductivity. These properties make copper alloys suitable for use in various areas, including construction and architecture, shipbuilding, automotive, machinery, appliances, defense and more.
Brass is a metal alloy made of a combination of copper and zinc. It demonstrates excellent electrical conductivity and good machinability. Known for its low friction properties and gold-like appearance, brass is commonly used in the architecture sector as well as to manufacture gears, locks, pipe fittings, musical instruments and more.
Plastics
ABS is a commonly used thermoplastic polymer with excellent impact, temperature and chemical resistance. It is also easy to machine and process and has a smooth surface finish. ABS can undergo various post-processing treatments, including coloring, surface metallization, welding, electroplating, bonding, hot pressing and more.
POM (Polyoxymethylene) is an engineering thermoplastic material that demonstrates excellent dimensional stability, stiffness and impact and temperature resistance. The material, also known as acetal or Delrin, can be produced two ways: as a homopolymer or as a copolymer. POM materials are commonly used in the fabrication of pipe components, gear bearings, household appliances, automotive parts, consumer electronics and more.
PC (polycarbonate) is a type of amorphous thermoplastic known for its high impact resistance and transparency. It also demonstrates good electrical insulation properties and moderate chemical resistance.
Available in a range of rod and plate formats, PC is commonly used in the automotive industry for the production of instrument panels, pumps, valves and more. It is also used in other sectors for the production of protective gear, medical devices, intermal mechanical parts and more.
PA, commonly known as Nylon, is a synthetic polymer with broad applications across many industries. The material is popular because of its good mechanical strength, stiffness, toughness, shock absorption and wear resistance.
Often seen as a universal plastic for producing mechanical structural parts, PA also boasts good electrical insulation and chemical resistance.
PMMA, also known as acrylic, is a transparent thermoplastic. One of the most widely used plastics in the world, PMMA demonstrates good chemical stability, mechanical properties and weather resistance. The material is also easy to process and to dye.
Because of its transparency, PMMA is often used as an alternative to glass and is popular in the interior design, construction and chemical industries. It is also regularly used in advertising to fabricate signage, lightboxes and billboards.
Available Surface Finishes
Polishing,
Grinding,
Sandblasting,
Glass bead blasting
etc.
Hardening,
Quenching and Tempering,
Case hardening,
Gas nitriding,
Plasma nitriding
etc.
Anodizing,
Hard anodizing,
Black finishing,
Passivating,
Phosphate conversion coating,
Nickel plating,
Galvanizing (zinc plating)
etc.
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