Onuki Kogyosho Co., Ltd
Most recent update: 2025-02-28
PR message
Mold Manufacturing & Press Processing
We specialize in the production of progressive dies, transfer dies, and single-shot dies, utilizing advanced stamping, bending, deep drawing, and forging technologies.
By transitioning from traditional machining-based manufacturing to press processing, we offer cost reduction, increased productivity, and enhanced quality stability.
Materials We Handle:
Stainless steel, copper, brass, nickel silver, phosphor bronze, aluminum, iron, etc.
Production Capabilities:
Material Thickness: 0.1mm – 5.0mm
Press Machines: 35 tons – 400 tons
Laser Welding Machines: 2 units
We take pride in our expertise in deep drawing of stainless steel and forging of steel sheets, aluminum, and copper.
Currently, we specialize in the mass production of components for automotive, industrial equipment, and semiconductor manufacturing devices.
For small-tonnage presses, we focus on the mass production of terminal components, primarily for bending and stamping applications.
Laser Welding Services:
Available as a standalone service or in combination with press processing.
Currently handling stainless steel and iron welding.
This product is formed from sheet material with protrusions and recesses on both sides, requiring high dimensional accuracy.
It is manufactured using a press method with a die.
Material: SPCC
Base plate thickness: t3.2
Application: EV compressor
Dimensions: 80mm × 30mm × 3mm
Tolerances:
Flatness: ±0.07μm
Round hole circularity: φ0.15μm
Contour accuracy: ±0.4μm
Positional accuracy: φ0.1μm
We perform full-circumference and spot welding using a fiber laser welding machine.
Cross-section polishing is conducted to inspect the welding condition, including voids and blowholes.
Quality control is also carried out alongside these inspections.
This is a deep-drawn product formed through multiple press processes from sheet material.
It is manufactured using a press method with a die.
Material: SUS304
Base plate thickness: t0.8
Application: Solenoid valve
Dimensions: φ23 × φ16 × 35mm
Tolerances:
Roundness, concentricity, parallelism: ±0.03μm
Perpendicularity: ±0.03μm
Step at the opening, opening radius: R0.5
Burr: ±0.02μm
This is a square deep-drawn product formed through multiple press processes from sheet material, with punching on the side and top surfaces.
It is manufactured using a press method with a die.
Material: SUS304
Base plate thickness: t0.5
Application: Solenoid valve
Dimensions: 30mm × 30mm × 20mm
Tolerances:
Flatness: ±0.1μm
Radius: R0.5
Burr: ±0.03μm
This is a deep-drawn product formed through multiple press processes from sheet material, with punching on the side and top surfaces.
It is manufactured using a press method with a die.
Material: SUS304
Base plate thickness: t1.0
Application: Solenoid valve
Dimensions: φ24 × 35mm
Tolerances:
Flatness: ±0.03μm
Perpendicularity: ±0.03μm
Step at the opening, R0.1
Burr: ±0.04μm
This is a forged product formed through multiple press processes from sheet material, designed with a thin outer wall and a raised center.
It is manufactured using a press method with a die.
Material: C1100
Base plate thickness: t1.6
Application: EV headlight
Dimensions: 9mm × 9mm × 4mm
Tolerances:
Flatness: ±0.01μm
Outer wall tolerance: ±0.01μm
Burr: ±0.01μm
This is a processed product formed using a forging press die from sheet material.
It is manufactured using a press method with a die.
Specifications:
① Material: A1050
Base plate thickness: t1.2
Application: Automotive sensor
Dimensions: 60mm × 32mm
Tolerance: Flatness ±0.1μm, Punching tolerance ±0.1μm
② Material: A1050
Base plate thickness: t2.0
Application: Automotive sensor
Dimensions: 42mm × 30mm
Tolerance: Flatness ±0.1μm, Punching tolerance ±0.1μm
Both sides full R0.5
This is a processed product formed using a progressive die from sheet material.
It is manufactured through punching and bending processes.
Material: A1050
Base plate thickness: t1.5
Application: IGBT (inverter component)
Dimensions: 44mm × 50mm
Tolerance: Punching tolerance ±0.2μm
Post-processing: Annealing and surface treatment (performed by a partner factory)
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Progressive die（ Die manufacturing / Press die ） |
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Designing（ Die manufacturing / Press die ） |
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Manufacturing（ Die manufacturing / Press die ） |
| Company name | Onuki Kogyosho Co., Ltd | Website URL | http://www.ohnuki.co.jp |
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| Street address |
日立市 Ibaraki Japan
[See map] |
Person in charge | Hiroto Ohnuki |
| Telephone number | +81-294-53-3821 | Fax number | +81-294-53-6839 |
| Capital | 10,000,000 JPY | Employees | 60 |
| Annual sales | 600,000,000 JPY | EMIDAS Member Number | 34417 |
| Type of manufacturing | Industrial machinery / Electronic parts / Medical equipment | ||
| Main 3 products |
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| Primary clients |
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| Large | Medium | Small |
|---|---|---|
| Designing | Mold designing | Injection molding die Progressive die designing (light electrical) Progressive die designing (auto) Drawing metal press die designing Transfer press die designing General metal press die Extrusion molding die designing 3D modeling (press) 3D modeling (plastic) NC data creation (press) NC data creation (plastic) |
| Designing | Jig and tool designing | General jig designing Welding jig designing Mass production jig designing |
| Development and production of prototype/Small-scale production | Machining | General-purpose milling General-purpose lathe machining Machining/Handles small-scale production (order from 1 piece) |
| Development and production of prototype/Small-scale production | NC machining | NC milling |
| Development and production of prototype/Small-scale production | Electrical discharge machine | Wire electric discharge machining Micro hole machining Electric discharge machining |
| Development and production of prototype/Small-scale production | Sheet-metal processing | Sheet metal protocol manufacturing |
| Development and production of prototype/Small-scale production | Blank cutting | YAG laser machining |
| Development and production of prototype/Small-scale production | Grinding processing | Plane grinding Form grinding |
| Development and production of prototype/Small-scale production | Welding/Adhesive bonding | TIG welding (argon welding) Robot welding YAG laser machining |
| Development and production of prototype/Small-scale production | Jig manufacturing | General jig manufacturing Welding jig manufacturing |
| Development and production of prototype/Small-scale production | Prototype processing | Plastic protocol machining Punching Welding Bending Small-size prototype manufacturing |
| Die manufacturing | Press die | Designing Manufacturing Part processing Plate machining Die set machining NC data creation Drawing die Bending die Blanking die Forming die Shaving die Progressive die Transfer press die Single press die |
| Mass production | Metal press | Drawing Bending Blanking Forming Transfer press (below 80 t) Iron Stainless steel Aluminum Copper Brass Phosphor bronze Plated steel plate Stainless steel material for spring Nickel Thickness Thickness Thickness φ0.6mm - φ9.0mm Diameter Single press (below 80 t) Single press (80 - 200 t) Progressive press (35 - 80 t) Progressive press (80 - 200 t) |
| Surface treatment | Lap polishing | Lap mirror polishing |
| Surface treatment | Barrel polishing | Barrel finishing (vibration) |
| Assembly/Inspection | Assembly | Auto parts assembly |
| Parts manufacturing | Spring | Terminal spring |
