Laser Parts Custom CNC High Precision Milling Turning Machining Services

Wins tech limited was established in 2012, with many years experience in machining industry. We’re specialized in CNC machining/milling/turning, laser cutting and stamping.

Our products are widely used in lighting industry, construction, electronic products, electronic home appliances, telecommunications, medical devices and equipment, machinery accessories, furniture, automobiles and tools, transportation, and aviation.

Wins tech limited Always Offer Our Customers Competitive Product Price, Well Controlled Quality System, Always On-Time Delivery (Prototypes Within 1 Week, Samples Can be Expedited Within 10 Days, Mass Product Delivery (MOQ) Lead Time Can Always be Less Than 25 Days. ) and Circumspect Communication and Service to Customers, We Have Won The Heart For Every Customer Who Has Ever Did Business With Us. Our Products are Widely Sold In Domestic Market, North America and European countries.

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. Maximum part size

• CNC milling 1500x800x800mm
• CNC turning Ø800x1000mm

Maximum part size depends on your machine size; giant machines can produce parts bigger than 2mx0.8mx1m, five-axis CNC machines have a smaller volume.

2. Take note of wall thickness.

• Metals: Minimum 0.8mm Plastics: Minimum 1.5mm
• Absolute minimum 0.6mm

Thin walls on a part allow for more opportunity to break, no matter what the material. Wall thickness is proportional to the stiffness of the material, so thinner wall thickness leads to vibrations when machining. As a guideline, keep this in mind: for metals, try not to go below 0.8mm, and plastics not less than 1.5mm. Try to design your part from sheet metal instead or use another manufacturing method if required.

3. Height of tall features

• Typically Maximum: 4 x part length

Vibration becomes a problem when machining tall features. Try to work by the ratio of max height is 4 x the length to minimize machine vibrations.

4. Try not to use too many tolerances in your design.

• Standard: ±0.125mm
• Minimum: ±0.001mm

Tolerances are necessary for a design; excess tolerancing only increases machining time and cost. Tight tolerances should only be specified where essential and should keep with the CNC machines tolerance ability. Some standard tolerance to stick by for most CNC machines is ±0.125mm, whereas down to ±0.001mm is feasible. Tolerances should be defined on all critical features.

5. Holes should have accurate length to width ratios.

• Maximum: Hole length = 4x Hole diameter

Try to work with the ratio hole diameter is less than 4 x the length of the hole. If the hole is too deep, this results in the tool deflecting and makes it difficult to remove the chips, leading to tool fracture. An example is a hole 10mm wide that should not be more than 40 mm deep. Deeper holes need to be machined with larger diameter cutting tools; bear this in mind.

6. Limit thread length

• Maximum thread length=3 x hole diameter
• Recommended: M6 or higher
• Smallest: around M2

Strong threads are formed in the first few turns, so long threads are pretty unnecessary; as a rule of thumb, try to design your thread three times longer than the hole diameter. Choose larger threads if possible; they are easier to machine.

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.

Customer Ever Said:

. I want to say that your products are very good. Thank you for all your suggestion, also good after sales service. -- Adela

. We trust the quality of your products. It always the best. Keep this going, and we will establish a long-term trade relationship with you. -- Charlie Bingham

. It has been more than 2 years we worked together, we are very happy working with them.--MICROTEX INC.

. Their products are very good,I trust this company.--RICHARD ENGSTROM

FAQ:

» Sample & Mold

Q : Can i have a trial order or samples only for several pieces?

A : As the product is customized and need to be produced, we will charge sample cost, but if the sample is unqualified, the sample will be free or after you placed mass orders, we will refund the sample cost.

Q : Can you open mold for us to manufacture new product?

A : Yes! if the quantity is big, our company can afford part of the mold cost.

» Delivery time & after-sales service

Q : Can you provide after-sales services?
A : Generally it is 20 -30 days after the drawing confirmed. Generally it is 20 -30 days after the drawing confirmed .

Q : Can you open mold for us to manufacture new product?
A : Yes, every defected products will be replaced and the cost be responsible by us or we will send new ones to customer immediately if it is urgent. However, it would take some time for the first production and almost 0 bad feedback from our customers after then .

» Payment Terms

Q : What is your terms of payment?
A : T/T(For big order, 30-90 days can be acceptable)

» About quotation

Q : How can i get the quotation?
A : Please send us information for quote; drawing, material, weight, quantity and request, we can accept PDF, ISGS, DWG, STEP file format.

If you don’t have drawing, please send the sample to us, we can quote base on your sample too.

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 drawing 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!