CNC MIlling Service

What We Offer

Transmission case for visualization of interior

INAC US offers superior CNC Milling Services utilizing advanced 3-axis and 5-axis machining centers.

Our high-precision, single-pass processing with DMG Mori Seiki 5-axis machining center caters to a broad spectrum of materials including plastics, ferrous and non-ferrous metals.

Delivering high-quality and prompt results, our service ensures that your prototyping needs are met with expertise and versatility.

Types of CNC Milling

3-axis Milling

3-axis milling

Our 3-Axis CNC Milling service provides reliable and efficient machining for a wide variety of shapes. This service is ideal for parts that require machining on three sides and can be effectively used for both large scale production and prototyping.

5-axis Milling

5-axis milling

In our 5-Axis CNC Milling service, we employ a state-of-the-art DMG Mori Seiki 5-axis machining center that offers enhanced rigidity, allowing us to process entire parts with high precision in a single pass. This capability expands the geometrical possibilities, increases accuracy, and reduces setup time, making it a great option for complex components.

Materials We Handle

Plastic/Resin

MaterialDensity (g/cm3)Flexural Strength (GPa)Tensile Strength (MPa)Izod Impact (kJ/m)
ABS1.032.2380.4
POM1.412.58730.07
PP0.9121.6025.20.136
Nylon1.142.3158.80.524
PEEK1.3 – 1.53.8 – 1997 – 2000.078 – 0.12

Clear Plastic/Resin

MaterialDensity (g/cm3)Flexural Strength (GPa)Tensile Strength (MPa)Izod Impact (kJ/m)
PC (Polycarbonate)1.15-1.22.2-2.561-69up to 900
Acrylic1.19117690.4
PMMA1.19117690.4
PVC1.3 – 1.452.6743.20.442

Ferrous Metal

MaterialDensity (g/cm3)Elongation (%)Ultimate Tensile Strength (MPa)Hardness (BHN)
SUS303 (AISI 303)8.0335 Min500-750230 Max HB
SUS304 (AISI 304)8.040 Min515201 Max HB
S45C (AISI 1045)7.8716.00565163

Non-Ferrous Metal

Material Density (g/cm3) Elongation (%) Tensile Strength (MPa) Hardness Brinell (HB or HRB)
Pure Titanium 4.51 26-60 240 70 – 74 HRB
Brass (Copper Alloy) 8.39 52.00 360 81.3 HB
Aluminum Alloy 2.67-2.73 3-35 76-84 60 HB

CNC Milling Tolerances

Maximum Part Size41.34/20.87/20.08 inches (Mori Seiki) or 41.34/25.59/14.96 inches (Iwama)
Depending on the material, even larger sizes can be accommodated by bonding.
Standard Lead TimeUsually 5 to 7 days. May vary depending on size, quantity, etc.
General TolerancesJIS B 0405 Medium grade ±0.00197 inches
Precision Tolerances±0.00118 inches (Please feel free to contact us even if you need higher precision.)
Minimum Feature SizeMinimum blade size is 0.0118 inches.
Threads and Tapped HolesSuitable for threading, tapping, inserts, heliserts, etc.

Past Works

Transmission Case

Visualization of interior for any mechanical parts is available.

Internal visualization for transmissions is used in automobiles / industrial machines.

It is possible to observe the internal oil flow inside. It is possible to reproduce the original shape with high precision by combining polycarbonate machining and our unique technologies of transparent treatment.

Non-ferrous Metal

A wide range of materials are available, including aluminum.

We proudly offer only the highest quality.

Outstanding high-quality products can be produced by a highly rigid 5-axis machining center, improvement of machining conditions, and set-up for processing.

Transparent mold

It is possible to observe the internal material flow by pouring water inside. It helps you find the cause of short shot, blow-whole etc.

■ Characteristics of acrylic (PMMA)

Acrylic resin is noted for its high degree of transparency (approximately 93%) which is more transparent than glass (approximately 90%).

It is well-suited when creating models that require intricate designs, such as a monument.

Finishing Options

Coloring/Painting

We offer a wide range of colors and finishes including solid color, metallic, clear, and gradient color.

Our in-house toning ensures that we can match the color sample you provide, and we always secure approval for the toned test pieces before proceeding.

Precision Masking

Need specific areas of your part to remain untouched during the finishing process?

Our precision masking has got you covered. Utilizing a high-precision cutting machine, we meticulously mask off areas that require protection during painting or other finish applications.

Metallizing

We use advanced aluminum vapor deposition techniques to create a metal-like finish on your parts, enhancing both their visual appeal and durability.

Composite decorations, including painting and masking on aluminum evaporation, are also available.

Pros and Cons of CNC Milling

Advantages

  • Precision and Consistency: CNC milling can produce highly accurate parts consistently, making it ideal for complex and detailed designs.
  • Versatility: CNC milling can handle a wide range of materials, including various types of plastic, ferrous and non-ferrous metals.
  • Efficiency: Once programmed, CNC milling machines can work continuously, which makes them suitable for mass production.
  • Integration with CAD/CAM: CNC milling machines can be directly programmed using CAD/CAM software, reducing the time from design to prototype.

Disadvantages

  • Expertise Needed: Proper operation of CNC milling machines requires skilled operators and programmers, which can be an additional cost for businesses.

Get In Touch!

If you have something you want to make, please contact us. Even a rough idea is OK.

We will give shape to your idea and deliver it to you. Please feel free to contact us.

STEP5: Quality Assurance and Precision Inspection

A quality inspection is performed. At INAC, where quality comes first, we use CMMs, gauges, and other equipment for precision checks.

STEP4: Post-Processing and Finishing

Finishing is done by removing the supports, polishing, and applying transparency treatment. It is also possible to paint and apply plating to the formed product.

STEP3: UV-Laser Print Formation (SLA Process)

Output: The product is formed by irradiating the liquid with a laser beam of UV light and laminating it. The conditions of the external environment, such as room temperature and humidity, must be maintained.

STEP2: Model Program Generation and Support Adjustment

A program for model formation is created. Depending on the shape, it may be necessary to adjust the degree of tilt and the position of the supports.

STEP1: CAD File Submission

Upload your CAD to our online quoting platform.

STEP 3: Rendering and Scene Integration

We can also handle exterior modeling and interior structure design based on illustrations. After creating the 3D models, we can create a rendering to fit a scene. We can deliver images even if we do not proceed with production.

STEP 2: Detailed Design and 3D Modeling

Once the design is determined, drawings and 3D models will be created. The structure will be examined, taking into consideration not only the external design but also functionalities such as mating and sliding.

STEP 1: Initial Design Consultation

The first step is a meeting to discuss the project. Drawings are not required for this meeting. We will create a design from a sketch based on the overall image and concept that you have in mind.

STEP5: Quality Assurance and Inspection

We perform quality inspections. At INAC, where quality comes first, we use CMMs, gauges, and other equipment for precision checks.

STEP4: Post-Casting Finishing

Vacuum casting materials are cured and then taken out of the silicone rubber mold. Then we perform finishing such as deburring and gating, and they are made into finish products.

STEP3:Material Injuction

Liquid casting material is injected into the silicone rubber mold in a vacuum environment. 

STEP2: Mold Preparation

The silicone mold is cut open into a male and female mold, and the master model is removed.

STEP1: Mold Creation

The master model is fixed to a wooden frame and silicone is poured to create a mold.