CNC Services

Lehitech services

CNC Machining for Prototyping & Production

Looking for a reliable, quick-turn supplier of machined plastic and metal components? Our unmatched in-house capacity ensures your parts are shipped on-time, every single time. Our AS9100-certified CNC machining facilities are designed for both rapid prototyping and low-volume production of end-use components.

Cnc Service

What is CNC Machining?

CNC (computer numerical controlled) machining is a widely used manufacturing process that uses automated, high-speed cutting tools to form designs from metal or plastic stock. Standard CNC machines include 3-axis, 4-axis, and 5-axis milling machines, lathes, and routers. Machines may vary in how parts are cut—the workpiece may remain in place while the tool moves, the tool may remain in place while the workpiece is rotated and moved, or both the cutting tool and workpiece may move together. 

Skilled machinists operate CNC machines by programming tool paths based on the geometry of the final part. The part geometry information is provided by a CAD (computer-aided design) model. CNC machines can cut almost any metal alloy and rigid plastic with high precision and repeatability, making CNC machined parts suitable for nearly every industry, including aerospace, medical, robotics, electronics, and industrial. We offer CNC machining quotes on over 40 materials ranging from commodity aluminum and acetal to advanced titanium and engineered plastics like PEEK and Teflon.

Metalworking CNC milling machine.
CNC Laser cutting of metal, modern industrial technology.

Cnc Service

Advantages of CNC Machining

There are huge numbers of CNC machining service providers. Why should you choose us? Here are the top 3 reasons:

1. Experience

Our team of engineers have built up rich, deep experience from many previous projects, so they can handle complex and precision parts in several industries without a problem.

2. Advanced Equipment

LehiTech and our partners have extensive equipment for both manufacturing and testing. Your parts will be manufactured and inspected with our advanced equipment, including HAAS 3-, 4-, and 5-axis CNC milling, Hexagon CMM, and Olympus XRF analyzer.

3. Fast Turnaround

We can return quotes within 24 hours, parts ship within 7 days or less, and we have a 99% on-time delivery and quality rate.

CNC Milling

CNC Milling can be used to create complex 3D shapes or to apply a machined surface or features to parts made both plastics and metals. The advantage of multi-axis milling machines makes CNC milling process versatile, as well as accurate and repeatable, for creating many different types of part features of complex geometries. Example include holes, curves, slots, angled shapes, and channels. Milling is also ideal for making tooling for pressure die casting and plastic injection molding.

CNC Turning

CNC lathes allow us to get high-speed turning of both plastics and metals from bar or block material. The turning process allows the production of complex external and internal geometries, including generating all kinds of threads. For any round shaped components, for example, shafts, worms, spheres, CNC turning is a more efficient method compared with CNC milling. 3ERP’sOur turning capability can make prototypes all the way through mass production parts. 

CNC Machining

CNC Machining Finishes

Standard (As-Milled)

The finish option with the quickest turnaround. Parts are left with visible tool marks and potentially sharp edges and burrs, which can be removed upon request. Surface finish is comparable to 125 uin Ra finish.

Bead Blast

The part surface is left with a smooth, matte appearance.

Tumbled

This is a batch-based process that tumbles vibrating media to remove sharp edges and burrs on machined parts. Tumbling can remove machine marks on exterior surfaces. Parts over 8” may require a manual review.

Chem Film (Chromate Conversion Coating)

Provides corrosion resistance and good conductivity properties. Can be used as a base for paint. Can leave surface yellow/gold. Adds very little thickness, about 0.00001”-0.00004”. Chem film will conform to MIL-DTL-5541, TYPE I/II.

Passivation

Improves corrosion resistance for 200 and 300 series and precipitation hardened corrosion-resistant steels. Thickness is negligible, about 0.0000001”. Conforms to ASTM A967, AMS-QQ-P-35, MIL-STD-171, ASTM A380, or AMS 2700.

Electropolishing

An electrochemical process cleans steel parts to reduce corrosion and improve appearance, by making the metal brighter. Removes about 0.0001”-0.0025” of the metal. Conforms to ASTM B912-02.

Electroless Nickel Plating

Provides uniform nickel coating which offers protection from corrosion, oxidation, and wear on irregular surfaces. The finished part will be brighter. Thickness starts at .0001”. Conforms to MIL-C-26074.

Silver Plating

Silver offers high solderability and electrical conductivity but is susceptible to tarnish. Conforms to AMS QQ-S-365D. Thickness is about 0.00002” – 0.0003.”

Gold Plating

Gold Plating provides good corrosion and tarnish resistance with excellent solderability. Default application specification is MIL-G-45204 and ASTM B488, CLASS 00, 0, OR 1. Thickness is about 0.00002″ – 0.00005.”

Zinc Plating

Provides uniform zinc coating which offers protection from corrosion, oxidation, and wear on irregular surfaces. Conforms to ASTM B633-15.

CNC Machining

Metal CNC Machining Materials

CNC Machining Aluminum Alloys

CNC Machining Copper Alloys

CNC Machining Bronze Alloys

CNC Machining Brass Alloys

CNC Machining Stainless Steel Alloys

CNC Machining Steel Alloys

CNC Machining Steel Alloys

CNC Machining Zinc Alloys

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