Custom Precision Machined Parts Milled CNC Machining Parts Milling CNC Steel Part

Brand Name:Yexin
Certification:ISO9001:2015
Model Number:SM25
Minimum Order Quantity:1 pcs
Delivery Time:3-15 work days
Payment Terms:L/C, D/A, D/P, T/T, Western Union
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Location: Dongguan Guangdong China
Address: Hengjiao Industry Zone, Hengjiao Village, Shijie Town, Dongguan, Guangdong, China
Supplier`s last login times: within 1 hours
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Custom Precision Machined Parts Milled CNC Machining Parts Milling CNC Steel Part


CNC machining, short for computer numerical control machining, is a widely used manufacturing

process that employs automated, high-speed cutting tools to shape designs from metal or plastic

stock materials.


Common CNC machines include 3-axis, 4-axis, and 5-axis milling machines, lathes, and routers.

These machines may employ different approaches to cut CNC parts, such as keeping the workpiece

stationary while the tool moves, keeping the tool stationary while rotating and moving the workpiece,

or moving both the cutting tool and workpiece simultaneously.


Experienced machinists operate CNC machines by programming tool paths based on the final machined

parts' geometrical specifications, which are derived from a CAD (computer-aided design) model.

CNC machines exhibit the capability to precisely and repeatedly cut nearly any metal alloy and rigid

plastic, making them suitable for custom machined parts in a wide range of industries, including

aerospace, medical, robotics, electronics, and industrial applications.


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CNC machining is a versatile machining process that can effectively work with various materials.

These materials include metals like aluminum, steel, brass, and titanium, as well as plastics

such as acrylic, nylon, and polycarbonate.


Here is a comprehensive overview of the most popular materials.

The Most Popular Materials
NameCharacteristics
Aluminum 6061Good strength-to-weight ratio, excellent machinability, low hardness
Stainless Steel 304

Excellent mechanical properties, resistant to corrosion & acid,

relatively difficult to machine

Brass C360High ductility, excellent machinability, good corrosion resistance
ABSExcellent impact resistance, good mechanical properties, susceptible to solvents
Nylon (PA6 & PA66)Excellent mechanical properties, high toughness, poor moisture resistance
POM (Delrin)High stiffness, excellent thermal & electrical properties, relatively brittle

Surface Finishes
NameApplicable toMachining marks
As machinedMetals, PlasticsVisible, light surface scratches
Smooth machining
Fine machiningMetalsSlightly visible
PolishingMetalsRemoved on primary surfaces
Bead blastingMetals

Removed for non-cosmetic,

removed on primary surfaces for cosmetic

BrushingMetals
Anodizing Type IIAluminum
Anodizing Type IIIAluminumVisible under anodizing
Black oxideCopper, Stainless steel, Alloy steel, Tool steel, Mild steelVisible
Powder coatingMetalsRemoved
Brushed + electropolishingStainless steelRemoved on Primary surfaces

Specialist Industries


CNC machining finds extensive applications across various industries. It is prevalent in sectors

like aerospace, automotive, consumer electronics, robotics, agriculture, and others that rely

on metal components.


Additionally, CNC machining plays a significant role in medical devices, household products,

energy, oil and gas, as well as various consumer-oriented applications. It stands as one of the

most widely adopted manufacturing processes globally.

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FAQ's


1. What is the typical delivery time and quotation process?


Our delivery time and quotation process are influenced by the complexity of your project.

For low-complexity parts, expect a lead time of 2-3 days. As complexity increases, the lead time

can range from 2-5 days. High-complexity parts may require a lead time of 5-15 days.


Quotation turnaround time varies based on complexity as well.

For straightforward designs, we can provide a quote within 1 business day or even faster.

However, for more intricate projects, the quoting process may take 3 or more business days.

If you have a design that needs assessment and a quote from our team, please don't hesitate to

contact us.


2. What are typical machining tolerances?


The standard machining tolerance is ± 0.005 inches or 0.13 millimeters.

Tolerances define the allowable range for a dimension.

For example, if a CNC machining tool has a tolerance of ± 0.01 millimeters, it means that the

tool can deviate by 0.01 millimeters in each cut.


When provided with a drawing, our CNC machining service can achieve tolerances as tight as

± 0.0002 inches. Without a drawing, all CNC parts adhere to our ISO 2768 medium standard.

We can also machine to even tighter tolerances of ± 0.025 millimeters or ± 0.001 inches when

an engineering drawing specifies critical features.


3. What size of fillets are added when no specific fillet is specified by the 3D model

or drawing?


If a particular fillet radius is not specified in the 3D model or drawing, please indicate your

preference. In the absence of specific instructions, the fillet radii will be added by the machinist

based on their judgment for ease of machining.


As a general guideline, internal vertical edge radii may exceed one-third of the depth,

while internal horizontal edges could be left sharp or have a radius ranging from 0.5mm to 1mm.

China Custom Precision Machined Parts Milled CNC Machining Parts Milling CNC Steel Part supplier

Custom Precision Machined Parts Milled CNC Machining Parts Milling CNC Steel Part

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