CNC Turning Services
Minghe has cooperated with many companies in the United States, Germany, and Canada for 10 years. Fast DMF assessment and efficient service are the beginning of our cooperation.
- DHL.FEDEX.UPS. TNT Shipping Fastest 3 days worldwide delivery.
- Prototypes can be processed in as little as 1 day.
- Tolerances as low as +-0.001mm.
- ISO 9001:2015, CE:SHBST100665461231
CNC Turning Service Overview
Minghe is a direct factory, including those with CNC lathes and turning centers, to provide you with the capacity and capability your project requires, while also offering the most competitive prices and lead times. Minhe’s machine learning training technology platform also provides instant manufacturability feedback to ensure your parts are optimized for the CNC turning process and meet your needs. Our on-demand manufacturing platform delivers high-quality metal and plastic CNC turned parts for rapid prototyping or low-volume production. Get an instant quote from your 3D CAD file today.
Why choose Minghe for your CNC turned parts?
Minhe works with engineers, designers and procurement teams to consistently deliver CNC turning services on time and on budget. With unmatched quality, capability and flexibility, our wide range of fabrication and finishing options means we can provide a one-stop solution for your CNC precision fabrication requirements.
Our ISO 9001 certification demonstrates our commitment to high quality CNC turned parts.
Coupled with our responsive, personal and knowledgeable customer service, Minhe can help you advance your custom fabrication project from initial inquiry through delivery.
CMM Reports
1 – 2.5 week lead time for complex projects
Tolerance: +/- 0.05mm or better on request.
Material certificate EN3.1
First Article Inspection Report
Delivered 2 days in advance on average
Minghe CNC Turning Tolerances
We have a variety of CNC manufacturing capabilities to meet a wide variety of needs.
1. Size
Threaded Holes
UNC & UNF threads from #2 up to 0.5 in.
Metric threads M0.8 and above.
Radii
Turned outside corners will typically include a 0.0005 in. chamfer.
Minimum hole size:
- Minimum on-axis and axial: 0.02 in. (0.5mm)
- Minimum radial: 0.002 in. (0.5mm), 0.001 in (0.025mm) for aluminum and brass
Grooves:
- Minimum OD groove width: 0.02 in. (0.5mm)
- Minimum OD groove width for aluminum and brass:0.019 in (0.5mm)
- Maximum OD groove depth: 19.6 in. (500mm)—varies with a groove width
Linear dimension
+/- 0.005mm
+/- 0.0002 inches
Hole diameter (not reamed)
+/- 0.025mm
+/- 0.001 inches
Shaft diameter
+/- 0.025mm
+/- 0.001 inches
Part Dimension limit
950*550*480mm
37.0 * 21.5 * 18.5 inches
2. CNC Machining Standards
CNC Machining Standards (DIN ISO 2768-1(1991-06)
Tolerance(mm)
Tolerance class
Metal (ISO 2768-F)
0.5 to 3
Over 3 to 6
Over 6 to 30
Over 30 to 120
Over 120 to 400
Over 400 to 1000
Over 1000 to 2000
F
±0.05
±0.05
±0.1
±0.15
±0.2
±0.3
±0.5
Plastic (ISO 2768-F)
Tolerance class
0.5 to 3
Over 3 to 6
Over 6 to 30
Over 30 to 120
Over 120 to 400
Over 400 to 1000
Over 1000 to 2000
F
±0.05
±0.05
±0.1
±0.15
±0.2
±0.3
±0.5
2.1 General tolerances on shape and position
General tolerances for shape and position (DIN ISO 2768-2(1991-04)
Tolerance(mm)
Tolerance class
Straightness and Flatness
10
10 to 30
30 to 100
100 to 300
300 to 1000
1000 to 3000
H
±0.02
±0.05
±0.1
±0.2
±0.3
±0.4
Verticality
Symmetry
Tolerance class
to 100
100 to 300
300 to 1000
1000 to 3000
to 100
100 to 300
300 to 1000
1000 to 3000
H
±0.2
±0.3
±0.4
±0.5
±0.5
Minghe’s CNC Turning Materials – Materials for CNC Turning Services
CNC turning services can be applied to a variety of materials, including metal, plastic, and wood. Turning metal and wood requires different lathes. Depending on the type of material being machined, a lathe may require certain maintenance and safety precautions. Below are some materials commonly used by CNC turning manufacturers. If the material you require is not listed, please contact us.
Material
Available Varieties
Aluminum
Aluminum 5052,
Aluminum 7075,
Aluminum 7075-T6,
Aluminum 6063-T5,
Aluminum 7050-T7451,
Aluminum MIC-6,
Aluminum 6061-T6,
Aluminum 2024-T3
Brass/Bronze
EPT Copper C110,
Copper 101
Copper
Brass C360,
Brass 260,
C932 M07 Bearing Bronze
Plastics
ABS,
Acetal [Delrin],
Acrylic,
G-10 Garolite,
Nylon 6/6,
PEEK,
Polycarbonate,
PTFE [Teflon],
Polypropylene,
Ultra-High Molecular Weight, Polyethylene
Steel
Alloy Steel 4130,
Alloy Steel 4140,
ASTM A36,
Stainless Steel 15-5,
Stainless Steel 17-4,
Stainless Steel 18-8,
Stainless Steel 303,
Stainless Steel 304,
Stainless Steel 316/316L,
Stainless Steel 416,
Stainless Steel 420,
Steel 1018,
Steel A36
Titanium
Titanium Grade 2,
Titanium 6Al-4V
Zinc
Zinc Sheet Alloy 500
Minghe CNC Turning Surface Finishing – Surface Finishing Process for Turned Parts
Choose from a variety of metal surface finishing services here for machining CNC turned parts to improve part appearance, surface smoothness, corrosion resistance and other characteristics.
As Machined
Description
As machined
Standard finish with a surface roughness of 0.8 μm (126 μin).
Smoothing
The standard smoothing surface roughness (Ra) is 0.2 μm (63 μin).
Painting
Spraying paint, pigment, or color to a solid surface as a colored protective layer.
Passivation
Remove ferrous contaminants or use a light coat of protective material to create a shell.
Powder Coating
A functional and decorative finish that is applied as a free-flowing, dry powder.
Anodizing
Type II (anodizing color or clear) or Type III (anodizing hard coat)
Polishing
Produce a smooth and shiny surface.
Black Oxide
Forming a black conversion coating on metal parts.
Bead Blasting
Removing surface deposits by applying fine glass beads at a high pressure.
Abrasive Blasting /Sandblasting
Smoothing and cleaning a hard surface by forcing solid particles across that surface.
Electroplating /Plating
Form a thin coherent metal coating on an electrode.
Brushing
Polishing the metal with grit resulting in a unidirectional satin finish.
Chromate Conversion Coating
Increase the corrosion resistance while maintaining conductive properties.
Why Choose Our Custom CNC Turning Services
Instant Quote
Simply upload your design files for an instant CNC quote.
We will quote within 24 hours.
consistently high quality
We strictly implement the quality management system to ensure that the product quality is consistent and meets expectations. A thorough inspection also ensures that you receive precision machined parts free of unwanted defects.
Fast Lead Time
Not only do we have a digital CNC machining service platform that provides a faster ordering process, we also have an in-country workshop with state-of-the-art machines to speed up production of your prototype or part.
24/7 Engineering Support
No matter where you are in the world, our engineering support is available 24/7, year-round. Our experienced engineers can provide the most suitable solution for your part design, material selection, surface treatment options and even delivery time.
CNC Turning FAQs
1. Is My Part a Good Fit for CNC Turning?
The following parts are well suited for CNC turning:
- Rotary parts with high precision requirements.
- Rotating parts with complex surface shapes.
- Rotating parts for transverse machining.
- Ultra-precision and ultra-low surface roughness parts.
- Parts with special threads.
2. How to Reduce the Cost of Machining Parts?
The main costs associated with CNC machining can be broken down into machining time, start-up costs, material costs, and feature costs. To reduce costs, you need to understand how these factors affect costs.
- The best way to reduce machining time is to design features that can be machined quickly, such as choosing the correct inside corner radius, reducing cavity depth, increasing wall thickness, limiting thread length, and designing standard size holes.
- Material costs can be reduced by considering the size of the blank required and the cost and machinability of the bulk material (softer alloys are processed faster).
- Can reduce startup costs by reducing the number of part rotations or repositionings required to complete a part, such as breaking geometry into multiple parts for later assembly.
- Using tolerances only when absolutely necessary, removing all text and letters, and avoiding multiple surface treatments can reduce feature cost.
Read more details on how to reduce the cost of CNC machined parts in our complete guide.
3. What Parts Can Be Made with CNC Turning?
CNC turning is used to create a wide variety of parts including automotive parts, knobs, tubes, gears, toy parts, flywheels, crankshafts, hubs and disc cams. It is most commonly used to manufacture CNC parts online for the automotive, aerospace, medical and other industries.
4. What is CNC Turning Center – Difference Between CNC Lathes and CNC Turning Centers
A CNC turning center, equipment or machine for CNC turning services, is a computer controlled 3, 4 or 5 axis machine capable of turning, drilling, tapping and milling, using power tools with powered rotary turrets, dual spindles , Y axis and multiple turrets. The CNC lathe is relatively simple, it is a 2-axis single-spindle, and basically consists of a headstock, a frame, a tailstock, and a bed.
- The structure of CNC turning center is more complicated than that of CNC lathe.
- CNC turning centers are more productive and versatile than CNC lathes.
- CNC lathes are generally of the flat bed type, while turning centers are generally of the inclined bed type.
There are very few guards around lathes, whereas turning centers usually have full guards to keep chips and coolant from splashing inside the machine.
5. Heat Treatment of Precision Turned parts
Heat treatment can be applied to precision CNC turned parts to improve key properties such as hardness. Heat treatment can be applied to metal parts throughout the manufacturing process.
– Hardening: Used to harden the material and make it stronger, it also reduces ductility.
– Annealing: Metal parts are heated to very high temperatures and then cooled slowly to obtain the desired microstructure.
– Normalizing: used to eliminate internal stresses generated during machining.
– Quenching: Heating metal to very high temperatures followed by rapid cooling.
6. What is the Difference Between CNC Turning and Milling?
The most notable difference is that CNC turning rotates the part for cutting, and CNC milling rotates the tool for cutting the part. Taking it a step further, CNC turning is often used on cylindrical parts because when the cutting tool is held against the part, you rely on the part itself to rotate and create friction to remove material. CNC milling, on the other hand, can create more complex parts because it is the rotating cutting tool (rather than the material).
7. What are Types of CNC Turning Operations
CNC Lathe Services There are many types of CNC turning operations that can be performed on an on-site tool lathe in a CNC turning shop, including hard turning, parting, facing, boring, reaming, taper turning, drilling, knurling, threading , slotting, etc., have different tools, costs and setup times.
– Conical Turning: Produces cylindrical parts whose diameter decreases from one end to the other.
– Hard turning: For materials with a Rockwell C hardness greater than 45, usually after heat treatment.
– Spherical Generation: Creates spherical finishing surfaces, turned around a fixed axis of rotation.
– Turning: Turning operations that machine a workpiece to its center.
– Separation: Create deep grooves to remove complete or partially complete components from their parent material.
– Grooving: Similar to parting, but only cuts to a specific depth from the outside or inside of the workpiece.
– Drilling: Material is removed to drill a hole from inside the workpiece, with the drill head attached to the tailstock or turret of the lathe. Drilling: Enlarging or smoothing existing holes.
– Knurling: A knurling tool is used to cut a jagged pattern into the surface of a workpiece to alter or enhance visual effect or feel.
– Reaming: A small amount of material is removed from a drilled hole to obtain a high precision diameter.
– Thread: car standard and non-standard thread, generally refers to single-point thread.
– Polygon turning: non-circular machining operations without interrupting the rotation of the raw material.
Let’s discuss your project. For DMF review, please click here.
What is CNC Turning Services and How does CNC Turning Work – Basics of the CNC Turning Process
CNC turning is a specialized form of precision CNC machining in which a cylindrical workpiece is held in a chuck and rotated while a cutting tool is fed into the workpiece and removes material to obtain the desired CNC turned part, resulting in an excellent finish finish, sometimes no post-processing is required. Turning can be performed on the exterior or interior of the workpiece to produce tubular components of different geometries.
When it comes to CNC turning processes, subtractive manufacturing methods are usually performed on CNC lathes or turning centers. Before cutting, the G-code and lathe need to be prepared, and then the billet rod is held in the chuck of the spindle, which holds the workpiece in place as the spindle rotates. As the spindle rotates to a certain speed, the stationary single-point CNC turning tool will move on a straight path parallel to the axis of rotation and remove excess material, reduce the diameter of the block, specify the size and produce the finish to obtain the desired specification. Final custom CNC turned parts.
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https://youtu.be/b98r555Mg6A
What is a CNC turning center – the difference between a CNC lathe and a turning center
A CNC turning center, a device or machine used for CNC turning services, is a computer-controlled 3-, 4-, or 5-axis machine capable of turning, drilling, tapping, and milling, using powered rotary turrets, twin spindles, Y’s power tool axis and multiple turrets. The CNC lathe is a relatively simple single-spindle and two-axis machine tool, which is basically composed of a headstock, a frame, a tailstock and a bed.
- The structure of the CNC turning center is more complicated than that of the CNC lathe.
- CNC turning centers have higher production capacity and versatility than CNC lathes.
- CNC lathes are generally flat bed type, while turning centers are generally inclined bed type.
- Lathes have minimal guards around them, while turning centers often have full guards to keep chips and coolant from splashing inside the machine.
CNC Turning Operations – Types of CNC Turning
There are many types of CNC turning operations for CNC lathe services that can be performed on an on-site tool lathe in a CNC turning shop, including hard turning, parting off, facing, boring, reaming, taper turning, drilling, knurling, threading, slotting etc. , with different tools, costs and setup times.
https://youtu.be/komnmkzfgz0
- Tapered turning: produce a cylindrical part of which diameter decrease from one end to another.
- Hard turning: suited for materials with a Rockwell C hardness greater than 45, typically performed after heat treated.
- Spherical generation: create a spherical finished surface, turning around fixed rotary axis.
- Facing: a turning operation in which the workpiece is machined to its center.
- Parting: create deep grooves that remove a completed or part-complete component from its parent stock.
- Grooving: similar to parting, but only cut to a specific depth from outside or inside of workpiece.
- Drilling: remove materials to drill holes from the inside of a workpiece with drill bits held stationary in the tail stock or tool turret of the lathe.Boring: enlarge or smooth an existing hole.
- Knurling: cut serrated pattern onto the surface of workpiece with knurling tool, to change or enhance visual effect or hand grip.
- Reaming: remove a small volume of materials from a drilled hole, for highly accurate diameters.
- Threading: turn standard and non-standard screw threads, generally means single-point threading.
- Polygonal turning: non-circular forms machining operation without interrupting the rotation of the raw material.
