Custom CNC High Precision Machined Parts

HOW TO IMPROVE YOUR CAD DESIGNS FOR CNC MACHINING

CNC Design Rules and Tips

When designing 3D CAD parts that are going to be CNC programmed using CAM software, a few rules or pointers can be followed to allow the part to be machined on a CNC machine.

For example, one needs to remember that the cutting tool used is round, so you cannot have square corners in some places, so one needs to be aware of the cutting tools used.

Here are some rules to follow when designing for CNC machining to prevent the CNC programmer from redesigning your part when they are doing the programming.

1. Avoid designing features that can’t be machined

Not all features can be machined on a CNC. If one sticks to some simple guidelines when designing, the part will be redesigned before machining.

One needs to understand the machine’s capability; for example, A 3 axis machine cannot machine negative angles. Another example is one cannot machine curved holes on a CNC; to do this, one would have to split the part into two and reattach the two halves. EDM is a better process for this.

2. Try to design functional parts that can be machined.

When designing, try to think about the machining processes involved in creating the part; one needs to think practically about how the machine will move and if the part is to be machined on a three-axis or five-axis machine. Three-axis machines can only work with simple geometry and curves, whereas five-axis machines can manage more complex parts.

3. Size of small features

• Minimum: 2.5mm
• Smallest: 0.100 mm

Most CNC machines use a minimum of a 2.5mm tool diameter; this can be considered when designing. It is feasible to develop features smaller than 0.1mm, although this should be avoided.

4. Design restrictions

One needs to think of the surfaces that can be machined with the CNC tool, internal geometries such as a curved hole are impossible to machine, and such a part would need to be split into two separate parts machined separately and then combined to produce that geometry.

The vertical parts of a machined part will always have a radius due to the tool geometry – drills are always round and can only cut radii.

The geometry of the part decides how it is held in the CNC machine; this impacts the cost; if it can’t be bolted down, it would need to be clamped in place, which could add to a positional error when completing subsequent runs.

Workpiece stiffness can change when thin walls are machined into the parts leading to the vibration of the part. Take this into account when designing.

Why Choose Us for Custom CNC Machining?

Fast and Reliably Delivery
Iterate part designs quickly and accelerate product development with quick-turn parts. Our automated design analysis will help spot any difficult to machine features before your design is sent to the manufacturing floor and save you from costly reworks further down the product development cycle.

Manufacturing Analysis and Online Quotes
When you upload your 3D CAD file to request a quote, we'll analyze your part WINS TECH LIMITED to identify any features that may be difficult to machine such as tall, thin walls or holes that cannot be threaded.

Infinite Capacity
Eliminate downtime spent waiting for parts and safeguard in-house machining with on-demand relief and infinite manufacturing capacity.

Material Selection
We stock more than 30 engineering-grade plastic and metal materials that are suitable for various part applications and industries. Materials range from plastics like ABS, polycarbonate, nylon, and PEEK to aluminum, stainless steel, magnesium, and copper.

Advantages Of Precision CNC Machining

• Fast and repeatable for low volume manufacturing
• CNC prototypes deliver on precise and high tolerance specifications
• Wide range of production and rapid prototype manufacturing materials
• Rapid machining offers great surface finishing

Quality inspection:

Zero defect rate target, automatic inspection equipment;

One-stop customized manufacturer accept all kinds of materials;

About WINS TECH LIMITED:

· March, 2012: WINS TECH LIMITED Set Up

· October, 2014: ISO9001 Certificate

· September, 2017: WINS TECH LIMITED HongKong branch office Set Up

· December, 2017:start to expand overseas markets

· May, 2019: 2 automatic production lines set up, 4 production lines in total, factory production capacity over 1 million

· May, 2020: ISO14001 Certificate

· September, 2021: IATF16949 Certificate

· 2022~ : to be continue

Certifications

Wins tech limited guarantees the quality of your machined parts with our ISO 9001:2015, ISO 14001, and IATF16949 certified quality management system, ITAR registration, and options to add inspections, hardware traceability, material certifications, and CoCs. We accept technical drawings and have support teams to ensure you get quality CNC machined parts on time.

High speed fabrication and prototyping!
We accept OEM and ODM, customizable!
We warmly welcome clients from all over the world to come to our factory for visit and cooperation!

FAQ:

1. What is your MOQ?
Normally we do not have MOQ requested , we provide high speed fabrication and prototype service.

2. Can you offer free sample?
Yes, we can provide free samples.

3. What is your delivery time?
We will deliver in 1~5 work days