CNC Turning Capabilities and Features
CNC Turning:As a professional precision parts machining company, U-Need is able to provide cost-effective CNC lathe services and high quality products with high precision machining.
| Flexible customization | High Quality Assurance | Solution | Experience |
| Customized materials Customized surface treatment Custom surface finish |
(Every) Piece inspection | Combined process plan of turning, milling and grinding Production cost control scheme |
20+experience in machining industry Customers are all over Europe, America and Asia |
What is CNC Turning
CNC turning is one of the most widely used precision machine tools. It is mainly used for cutting the inner and outer cylindrical surfaces of shaft parts or disc parts, inner and outer conical surfaces of arbitrary taper angles, complex rotating inner and outer surfaces, and cylindrical and conical threads, etc.
And it can perform eccentric, spherical, rolling, grooving, drilling, reaming and boring, etc.CNC machining tools automatically process the parts in accordance with the pre-programmed processing program. We write the machining process route, process parameters, tool motion trajectory, displacement, cutting parameters and auxiliary functions of the part into a machining program list according to the instruction code and program format specified by the CNC machine tools. And then we record the content of the program list on the control medium. Ultimately, we input into the numerical control device of the numerical control machine tools to direct the machine tools processing to get the machining parts.
You will get a comprehensive one-stop business solutions for rapid CNC machining, as our CNC turning services work in tandem with other CNC machining operations.
Our precision CNC lathe has made many types of CNC turning parts, such as punches, dies, washers, bolts, shafts, rivets, spacers, sleeves, threaded joint, stainless steel fitting, steel pipe fittings, plastic pipe fittings, lighting fittings, wheels studs, and so on.
If you are looking for high-quality, experienced and well-cooperation CNC turned parts, please get in touch with us, and we will provide you with professional CNC machining service.
The stroke and tolerance for U-Need’s CNC turning machine process
| Machine | Maximum Stroke(mm) | Maximum Stroke(inches) | Machining accuracy(mm) |
| CNC lathe machine | 248*500 | 9.7637*19.6850 | 0.005 |
| High Speed Lathe | 320*750 | 12.5984*29.5276 | 0.005 |
| Table Lathe | 30*200 | 1.1811*7.8740 | 0.01 |
Minimum size for our CNC lathes machining：
| External diameter | 1.0mm | 0.03937” |
| Hole | 1.0mm | 0.03937” |
| External Thread | M2 | |
| Internal Thread | M2 | |
| External groove width | 1.5mm | 0.05906” |
| Inner hole slot width | 1.5mm | 0.05906” |
| External raised chamfer | R0.2mm | R0.00787” |
| External concave chamfer | R0.2mm | R0.00787” |
| Internal raised chamfer | R0.2mm | R0.00787” |
| Internal concave chamfer | R0.2mm | R0.00787” |
General Tolerances to DIN ISO 2768
GE NERAL TOLERANCES FOR LINEAR AND ANGULAR DIMENSIONS (DIN ISO 2768 T1）
LINEAR DIMENSION:
| Permissible deviations im mm for ranges in nominal length | f(fine) | Tolerance class designstion desceription | v(cery coarse) | |
| m(medium) | c(coarse) | |||
| 0.5 up to 3 | ±0.05 | ±0.1 | ±0.2 | – |
| over 3 up to 6 | ±0.05 | ±0.1 | ±0.3 | ±0.5 |
| over 6 up to 30 | ±0.1 | ±0.2 | ±0.5 | ±1.0 |
| over 30 up to 120 | ±0.15 | ±0.3 | ±0.8 | ±1.5 |
| over 120 up to 400 | ±0.2 | ±0.5 | ±1.2 | ±2.5 |
| over 400 up to 1000 | ±0.3 | ±0.8 | ±2.0 | ±4.0 |
| over 1000 up to 2000 | ±0.5 | ±1.2 | ±3.0 | ±6.0 |
| over 2000 up to 4000 | – | ±2.0 | ±4.0 | ±8.0 |
external radius and chamfer heights
| Permissible deviation in mm for ranges in nominal length |
f (fine) | Tolerance class designation (description) | v (very coarse) | |
| m(middle) | c(coarse) | |||
| 0.5 up to 3 | ±0.2 | ±0.2 | ±0.4 | ±0.4 |
| over 3 up to 6 | ±0.5 | ±0.5 | ±1.0 | ±1.0 |
| over 6 | ±1.0 | ±1.0 | ±2.0 | ±2.0 |
ANGULAR DIMENSION
| Permissible deviation in mm for ranges in nominal length | f(fine) | Tolerance class designation(descriptipon) | v(very coarse) | |
| m(middle) | c(coarse) | |||
| up to 10 | ±1° | ±1° | ±1°30′ | ±3° |
| over 10 up to 50 | ±0°30′ | ±0°30′ | ±1° | ±2° |
| over 50 up to 120 | ±0°20′ | ±0°20′ | ±30′ | ±1° |
| over 120 up to 400 | ±0°10′ | ±0°10′ | ±0°15′ | ±0°30′ |
| over 400 | ±0°5′ | ±0°5′ | ±0°10′ | ±0°20′ |
GENERAL TOLERANGES FOR FORM AND POSITION (DIN ISO 2768 T2)
flatness and straightness
| Ranges in nominal lengt in mm | Talerance class | ||
| H | K | L | |
| up to 1 | 0.02 | 0.05 | 0.1 |
| over 10 up to 30 | 0.05 | 0.1 | 0.2 |
| over 30 up to 100 | 0.1 | 0.2 | 0.4 |
| over 100 up to 300 | 0.2 | 0.4 | 0.8 |
| over 300 up to 1000 | 0.3 | 0.6 | 1.2 |
| over 1000 up to 3000 | 0.4 | 0.8 | 1.6 |
PERPENDICULARITY TOLERANCE
| Ranges in nominal length in mm | Tolerance class | ||
| H | K | L | |
| up to 100 | 0.2 | 0.6 | 0.6 |
| over 100 up to 300 | 0.3 | 0.6 | 1 |
| over 300 up to 1000 | 0.4 | 0.8 | 1.5 |
| over 1000 up to 3000 | 0.5 | 1 | 2 |
SYMMETRY TOLERANCE
| Ranges in nominal | Tolerance class | ||
| H | K | L | |
| up to 100 | 0.5 | 0.6 | 0.6 |
| over 100 up to 300 | 0.5 | 0.6 | 1 |
| over 300 up to 1000 | 0.5 | 0.8 | 1.5 |
| over 1000 up to 3000 | 0.5 | 1 | 2 |
RUN-OUT TOLERANCE
|
Tolerance class |
||
| H | K | L |
| 0.1 | 0.2 | 0.5 |
CNC turning can be applied to various types of materials, including carbon steel, alloy steel, stainless steel, copper, iron, POM, and other raw materials.The following table shows some common materials of CNC turning parts factory. Please contact us if the material you need is not on the table.
| Steel | 45# 、Q235 steel、SKD61、P20 steel、SKS3 steel、SKD11、SKH51、ASP30、ASP60 |
| Tungsten Carbide | ST6 material、ST7、 KG5、KG6、ceramic materials |
| Copper | C260 brass、 C360 brass、Beryllium Copper |
| Aluminium | AL5052、AL6061、AL6063、AL7075 |
| Stainless Steel | 303 stainless steel、304 grade stainless steel、stainless steel 316、416 stainless steel |
| Plastic | POM plastic、PEEK plastic、DELRIN plastic、NYLON plastic、plastic PVC、POLYSTYRENE plastic |
Surface finishes are classifie by materials:
| Steel | Sand blasting, shot blasting, grinding, tumble/roll polishing, polishing, brushing, mirror polishing, spraying, painting, oiling, bluing and blackening, phosphating, pickling, PVD, ion nitriding, laser surface deal. |
| Carbied | Sand blasting, shot blasting, grinding, tumble/roll polishing, polishing, brushing, mirror polishing, spraying, painting, oiling, bluing and blackening, phosphating, pickling, PVD, ion nitriding, laser surface deal. |
| Copper | Pickling, Passivation, Gold Plating, Zinc Plating, Nickel Plating, Chrome Plating. |
| Aluminum | Grinding, tumbling/roll polishing, polishing, brushing, anodizing, electroplating. |
| Stainless steel | Grinding, tumbling/roll polishing, polishing, brushing, spraying, painting. |
| Plastic | Grinding, polishing,painting. |
FAQ:
- What products are suitable for CNC lathe tool machining?
– Inner and outer cylindrical surfaces of shaft or disc parts.
– Internal and external conical surfaces of any cone angle of the shaft or disc parts.
– Machining of complex rotary inner and outer surfaces of the shaft or disc parts, cylindrical and conical threads, etc.
– Grooving, drilling, reaming, and boring of shaft or disc parts.
– Products that require high-volume lathe machining are suitable for CNC lathe machine.
– The structure of the product or workpiece should be suitable for precision machining CNC lathe.
– The material of the workpiece is suitable for CNC lathe process.
– The workpiece’s diameter, length, processing technology, etc., are suitable for CNC lathe machining. - What are CNC lathes used for?
– Inner and outer cylindrical surfaces of the shaft or disc parts.
– Internal and external conical surfaces of any cone angle of the shaft or disc parts.
– Machining of complex rotating inner and outer surfaces of the shaft or disc parts, cylindrical and conical threads, etc.
– Grooving, knurling, drilling, reaming and boring of the shaft or disc parts. - What are the differences between CNC lathe and CNC machining center?
– CNC lathe is two-axis control, and CNC machining center is multi axis machining.
– CNC lathe uses a tool holder, and CNC machining center has a tool magazine. The tool holder is an integral part of the CNC lathe. It installs various cutting tools. Its structure directly affects the cutting performance and working efficiency of the lathe. The tool holder is divided into turret type and row tool type. There are more types of tool magazines in CNC machining center than those of tool holders in CNC lathes. There are disc type tool magazine, turntable style / bamboo-hat type tool magazine for CNC machining center, flying saucer type tool magazine, chain type tool magazine, synchronous types, etc. The tool capacity of most tool magazines is more significant than that of CNC lathe tool holders.
– From the process difference, because CNC machining center has its tool magazine, it can automatically change the tool to realize multi-process machining. However, CNC lathe does not come with its tool magazine and can only complete one process.
– Different from the processing range, the processing range of CNC lathe is smaller than that of CNC machining center. CNC lathe is mainly used to for machining of rotary shaft parts, such as cylinders, cones, etc. CNC machining center can do more, such as boring, milling, cutting, reaming-tapping screws, etc. CNC machining center is divided into three-axis control, four-axis CNC, and five-axis CNC. The more axes, the broader range for CNC machining center processing, such as Box parts, special-shaped parts, plate parts, complex surface, etc.
– In terms of programming, the same CNC systems are used. CNC lathes are somewhat similar to three-axis or four-axis machine centers, but CNC machining centers are more complicated to program. - Customized heat treatment of precision CNC lathe parts.
– Reference to manufacturing standards: Heat treatment of many materials is standardized and can be customized with reference to the standardization of heat treatment.
– Specifying desired hardness: Specify common methods for the heat treatment and case hardening of tool steels. For example, the hardness for SKD61 is usually required to be 50~52hrc; For SKD11, it usually requires a hardness of 58~50hrc.
– Specify heat treatment cycle: according to the use function of the part, when the details of the known required heat treatment are set, these details can be clearly marked together when placing an order. - What are the differences between CNC turning lathe and CNC milling machine?
– Working principle is different. CNC lathe is that the workpiece rotates on the spindle. And the tool is on the tool holder, moving in the XY axis direction. CNC milling machine is the rotation of the milling cutter on the spindle or the feed movement of the milling head, and the workpiece moves in the XYZ axis direction on the worktable. Thereby, the workpiece can obtain the required machining surface.
– Programming is different. Determined by the working mode, CNC lathe programming only needs to input the XY coordinates, and the milling machine needs to input the XYZ coordinates.
– The scope of work is different. The lathe can process shafts, discs, sleeves, outer circles, tapered surfaces, grooves, end faces, drill holes, threads, and others with rotary surface workpieces. Milling machines can mill planes, holes, grooves, toothed parts and various curved surfaces, and so on. - What is the process flow of CNC lathes?
According to the processing drawings provided by the customer, the technicians can analyze the shape, dimensional accuracy, surface roughness, work-piece material, heat treatment requirements, and surface requirements of the parts. And then, they select the tool and determine the positioning and clamping devices, processing methods, and process sequencing. In deciding the CNC lathe processing, they will fully consider the command function of the CNC lathe machine tools, and give full play to the efficiency of turning machine tools, so that the processing route is reasonable, with less time for cutting and short processing hours. - The experience of the technicians?
Technicians have all studied through relevant mechanical manufacturing majors, and the longest working time of technicians in the industry is over 20+ years. - where is the origin?
Dongguan City, Guangdong Province, China - How long is the usual processing cycle?
7~15 days after placing the order - What is the minimum order quantity?
One piece minimum order - How to place an order?
E-Mail - How to transport?
Air express (UPS, DHL, FEDEX, OCS…), Ocean freight - How to pay?
T/T - How to make an inquiry?
E-mail，Whats app, Skype - How to conduct quality inspection?
Digital calipers, micrometers, height measuring instruments, plug gauges, profile projectors, COORDINATE MEASURING MACHINE, industrial screws, thread gauges, dial indicators, ring gauges - How to packing？
Secondary Inspection——Wiping ——Bagging——Spraying Anti-rust Oil——Packing - How long is the shipping time?
Europe and the United States 3~7 working days, according to different express times
Japan 2~7 working days, according to different express time