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the best parts
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Cutting Parts

We take on the challenge of machining difficult-to-cut materials with pride and absolute quality.

Experience in all types of metal processing and mass production.

Utilizing our in-house tool design and manufacturing know-how, we overcame the unique stickiness and softness of aluminum processing, which was a key issue in reducing the weight of AT components in automobile parts, and achieved 24-hour production.
By using in-house designed and manufactured tools for difficult-to-cut materials, we differentiate ourselves from other companies through our own unique tool layout.

Delivering absolute quality 365 days a year.

The functions of the AT components we produce are “parts that depend on life (absolute quality)” and we strive to achieve zero defects.
Our company is striving to achieve this goal by planning and implementing quality improvement activities centered on ISO9001:2015 and enhancing employee training.

We respond with the latest equipment and craftsmanship.

Our advanced cutting technology, which has been our specialty since our founding, is constantly evolving.
By proactively introducing the latest equipment, each employee always being aware of problems, and pooling their knowledge to find solutions, we aim to become a group of professionals in metal cutting. Achieving high precision, high quality, and low cost.

Receiving round bars

We accept materials provided by customers as well as ferrous and non-ferrous round bars procured by us. We also flexibly respond to various materials that can be used as materials for products.

Cutting processing

High productivity is achieved through complex machining using a high-performance cutting machine (CNC automatic lathe). For aluminum materials, we have secured cutting technology with micron precision.

Polishing

In addition to outer diameter grinding, we also have technology for grinding aluminum parts. For cylindrical parts, we achieve high precision and efficiency by performing through-feed grinding (through polishing).

Parts cleaning

Processed products are washed using an automatic washing machine that uses environmentally friendly hydrocarbons. De-oiling and foreign matter removal are achieved using a high-performance 0.001 mesh filter and filtration equipment.

Finished product inspection

The quality of parts must be guaranteed through rigorous inspection. Inspectors inspect parts for damage or defects through visual inspection and palpation.

Packing and shipping

We ship in packaging that meets both quality and transportation efficiency. We deliver important products to our customers using our own logistics.

Cutting Parts Facility

We have the latest equipment to meet the demands of the world with better quality, faster and more efficiently.

Main processing equipment

  • TSUGAMI CNC automatic lathe
    BS18
    29units
  • TSUGAMI CNC automatic lathe
    BS20
    15units
  • TSUGAMI CNC automatic lathe
    BS26
    03units
  • TSUGAMI CNC automatic lathe
    BS32
    03units
  • TSUGAMI CNC automatic lathe
    MB38
    01units
  • TSUGAMI CNC automatic lathe
    MU38
    01units
  • TSUGAMI CNC automatic lathe
    MB50
    01units
  • TSUGAMI CNC automatic lathe
    B020F
    01units
  • TSUGAMI CNC automatic lathe
    B0205
    07units
  • TSUGAMI CNC automatic lathe
    SS207
    15units
  • TSUGAMI CNC automatic lathe
    BW209
    14units
  • TSUGAMI CNC automatic lathe
    B0326
    02units
  • CITIZEN CNC automatic lathe
    L16
    03units
  • CITIZEN CNC automatic lathe
    L20
    02units
  • CITIZEN CNC automatic lathe
    A20
    01units
  • STAR PRESICION CNC automatic lathe
    SR-20R
    02units
  • STAR PRESICION CNC automatic lathe
    SC20
    01units
  • STAR PRESICION CNC automatic lathe
    SR-20J
    01units
  • STAR PRESICION CNC automatic lathe
    SR-10J
    08units
  • MICRON Stop polishing machine
    MD-450
    02units
  • OMIYA MACHINERY Precision centerless
    grinding machine
    OC-18BR-200
    01units
  • MICRON Precision centerless
    grinding machine
    MEC-450
    01units
  • CLEANVY Hydrocarbon vacuum
    cleaning dryer
    TWH3-3040VA2PCV
    01units
  • ORIGINAL Secondary processing
    machine
    02units

Non-contact fully automatic measurement system

  • MITUTOYO Roundness measuring
    machine Model
    RA-2100SA
    01units
  • MITUTOYO Surface roughness
    measuring instrument device
    SV3100
    01units
  • MITUTOYO Contour measuring device
    CV-31000S4
    02units
  • MITUTOYO Measuring microscope
    MF-A1730
    04units
  • KEYENCE 3-D measuring machine
    XM-7500
    01units
  • KEYENCE One shot 30 shape measuring machine
    VR-5000
    01units
  • KEYENCE Image dimension
    measuring machine
    IM-6120
    01units
  • KEYENCE Image dimension
    measuring machine
    IM-7000
    01units
  • KEYENCE Image dimension
    measuring machine
    IM-8020
    01units

Special Parts

With the development of science and technology, a wide variety of products are being manufactured in all fields, and their functions and shapes are becoming increasingly complex and sophisticated.Naturally, similar technological innovations are required for the machines and tools used to make these products and parts.Since its founding, National Tool has been producing tools that meet a variety of needs by always incorporating technology and equipment that are one step ahead of the times in the field of special tools.While special tools require high precision, they are not mass produced.Each user company, and even each tool, has different functions, shapes, and sizes, and their manufacturing methods and processes also vary.At our company, we use state-of-the-art automated machinery as well as manual processing by skilled workers. Furthermore, we are confident that we can handle not only precision but also highly difficult special tools.

Product introduction

Carbide stepped burnishing・Drill・Reamer

〈Target work〉
Nonferrous metals
〈Features〉
  • High precision hole finishing
  • Good surface roughness due to burnishing
  • For Φ13 or more, types with plate tip solders can also be manufactured
  • Machining allowance = 0.1 to 0.2 (recommended)
  • Oil hole type and twisted type are also available

Stepped twist drill

〈Target work〉
No choice of work material
〈Features〉
  • Simultaneous drilling and chamfering
  • Point blank drill type is available for Φ10 or more
  • Helix angle ○ strong = sharpness improves, but chip evacuation performance decreases
  • Type with oil hole also available

Full-form drill・full-form cutter

〈Target work〉
No choice of work material
〈Features〉
  • For machining complex shapes
  • For larger diameters, solder type can also be manufactured

Half-moon cone (drill)

〈Target work〉
Nonferrous metals
〈Features〉
  • Half-moon shaped single-blade reamer
  • Generally, the workpiece rotation drill stops
  • The core thickness can be thicker than the diameter

Flat drill (flat drill)

〈Target work〉
No choice of work material
〈Features〉
  • Straight drill with flat plate shape
  • For larger diameters, we can also manufacture flat brazed types
  • The plate thickness is approximately 1/3 of the diameter
  • Web taper ⇒ Ensure rigidity

Carbide full type bite/dovetail

〈Target work〉
Transfer complex shapes to workpieces
〈Features〉
  • Shape and dimension tolerance ±0.005 possible
  • Squeeze/R breaker processing is also possible, improving cutting and ejection performance

End mill

〈Target work〉
Non-ferrous metals (iron and SUS are also available)
〈Features〉
  • For machining O-ring grooves (dovetail grooves)
  • Can be manufactured in full shape, R shape, tapered shape, etc. depending on the intended use

Special Parts Facility

Not only do we have the latest equipment, but we are skilled workers who can use general-purpose equipment rather than specialized equipment, so we are able to combine techniques with the latest equipment.

Main equipment
[Blank processing department]

  • TAKIZAWA CNC lathe
    ATO-400A
    01units
  • SHIZUOKA NC milling
    B-3V
    01units
  • OKK Machining center
    VM4ll
    01units
  • HEIWA Fine cut carbide cutting
    machine
    N-7
    01units
  • TOROU 10K high frequency
    brazing machine
    01units
  • FUJISEIKI Dry blast device
    D10-121
    01units

Main equipment
[finishing department]

  • MAKINO CNC tool grinding machine
    CNS2
    01units
  • MAKINO CNC tool grinding machine
    CNV-60
    02units
  • MAKINO Tool sharpening cutting
    machine
    C-40
    03units
  • STUDER CNC universal
    cylindrical grinder
    S33
    01units
  • TOYODA CNC cylindrical grinding
    machine
    GE3
    01units
  • MITSUBISHI CNC cylindrical grinding
    machine
    RD33
    02units
  • SHIGIYA CNC cylindrical grinding
    machine
    GPS-2050
    02units
  • SHIGIYA Circular grinder
    GU3060
    01units
  • TSUGAMI Circular grinder
    GU4A
    01units
  • OKAMOTO Surface grinder
    PSG-63DX
    01units
  • WASHINO CNC optical copy
    grinding machine
    GLS-5T
    01units
  • WASHINO CNC optical copy
    grinding machine
    GLS135AS
    02units
  • WASHINO CNC optical copy
    grinding machine
    GLS130AS
    01units
  • ITO Universal grinder
    DP-3
    01units
  • IIDA tool grinding
    GE-120S
    01units
  • EWAG Universal tool grinder
    WS-11
    01units
  • MAZAK CNC multi-tasking machine
    INTEGREX j-200
    01units