Showa Precision Tools Co., Ltd.
Most recent update: 2025-03-07
Showa Precision Tools is specialized in the design and manufacture of precision metal stamping dies. In our factory set up to be the best possible for our industry, we use the best machines in the world in order to achieve micro-level precision. Recently, we have been expanding our business to the design, manufacture, and finishing of die peripheral equipment and automatic machines.
We have more than 80 pieces of equipment ranging from general-purpose machines to NC machines, including lathes, milling machines, machining machines, flat grinding machines, EDM machines, w-EDM machines, and jig grinding machines. For more information, please visit our website.
PR message
The growth Showa Precision Tools has witnessed during more than 60 years of service was achieved thanks to our clients. Through the accumulation of "Excellent Technologies" and "know-how", we aim at achieving the ultimate manufacturing in order to maximize our clients satisfaction.
Showa Precision Tools have manufactured punching and forming dies for magnetic disks (magnetic vapor deposited film), liners (non-woven fabric), shutters (SUS), and hubs (SUS).
For these dies, if the clearance is too wide the workpiece material fibers can get into the gap between the punch and the die, especially for liners which have fibers with a diameter of only a few microns. If it happened, the product and the scraps would then be connected, causing feed defects. Our clients used to use "caulking" in order to further reduce the clearance.
Caulking is a technique which consists in tapping the upper surface of the die near the punch entrance area in order to fill any gap.
This is often used during production as the clearance widens with usage of the die, which can be an issue. In some cases, manufacturers would only be able to run their press for 30mn, after what they would need to stop production for 1h in order to apply this caulking technique...
However we have been able to solve this problem thanks to our high precision parts machining and assembly technology, by conceiving and manufacturing a die which succeeded in maintaining a uniform clearance of 1 micron with dynamic precision.
This technology is also used in our battery electrode foil punching dies technology.
[ Other narrow clearance dies ]
- Electrode Foils Blanking Die (for Lithium-Ion Batteries)
https://en.nc-net.or.jp/company/5140/product/detail/135453/
- Full Blanking Hand Puncher - Battery Material Evaluation Tool
https://en.nc-net.or.jp/company/5140/product/detail/135448/
Feel free to visit our website for more information on our products and technology.
---------------------------------------------------------------
Showa Precision Tools Co.,Ltd
〒236-0004
1-4-2 Fukuura, Kanazawa-ku,
Yokohama City, Kanagawa Prefecture, JAPAN
Sales Department:
TEL：+81-45-785-2237 FAX：+81-45-785-4411
Reception:
TEL：+81-45-785-1111 FAX：+81-45-785-4488
HP: https://www.showa-seiko.co.jp/
Driven Gear - Fine Blanking Product
[ What is a driven gear? ]
When two gears are meshed, the gear moved by the other one is called the "driven gear".
The other one is called the "drive gear".
The gears in the photo are for two-wheeled vehicles and are stamped with a fine blanking die.
[ Sample product specifications of sub-balancer and driven gear ]
- Workpiece material: SCM415HV
- Product size: φ110mm
- Thickness: 5.2mm
- Press: FB400 ton
[ Features ]
- The rectangular holes are just there to reduce the part weight and therefore the dimensional precision required is not so high. However, the gear part needs to have a 100% sheared surface and the profile of the involute part is also strictly controlled.
- The punch/die clearance is maintained at 10μm for the gear and the central hole.
- A V-shaped protrusion on the die is used in order to minimize the die-roll at less than 20%.
- A special radius is set on the dies cutting edges in order to reduce the burrs to a size where they can be removed in a separated process.
- The sides of the die and of the central hole punch are polished to a mirror finish, resulting in a surface roughness of the sheared surface also as smooth as a mirror.
[ Other fineblanking dies ]
- Torsion Damper "Mass" - High-rigidity Blanking Die
https://en.nc-net.or.jp/company/5140/product/detail/135478/
- Fineblanking Die for Seat Recliner Part
https://en.nc-net.or.jp/company/5140/product/detail/138925/
- Fineblanking Die for Parking Pawl
https://en.nc-net.or.jp/company/5140/product/detail/138903/
Fine blanking press FB-800 Mori Ironworks
https://www.nc-net.or.jp/company/5140/product/detail/125137/
Feel free to visit our website for more information on our products and technology.
---------------------------------------------------------------
Showa Precision Tools Co.,Ltd
〒236-0004
1-4-2 Fukuura, Kanazawa-ku,
Yokohama City, Kanagawa Prefecture, JAPAN
Sales Department:
TEL：+81-45-785-2237 FAX：+81-45-785-4411
Reception:
TEL：+81-45-785-1111 FAX：+81-45-785-4488
HP: https://www.showa-seiko.co.jp/
[ Precision Progressive Press Die for Electron Guns G1 Holder ]
An electron gun is a device that forms and emits electron beams. It is rarely seen today, but it is found in cathode-ray tube televisions.
The beam emitted from the electron gun hits particles that emit red (R), green (G), and blue (B), the three primary colors of light. Many colors can be created with this process.
We have designed and manufactured a progressive die to form the holder part of such electron guns.
The Kovar material used for this part is difficult to form. Yet this is a part that requires a high degree of precision, with the positional accuracy of the three holes through which the beam passes and the flatness of the flange being less than 0.02mm.
[ Specifications ]
- Workpiece material: KV-2
- Sheet thickness: 0.3 mm
- Production speed: 165 to 180 shots per minute
- Number of Operations in the die: 20
- Die: 1 cavity progressive die
- Press capacity: 150 tons
[ Similar technologies ]
- Progressive Die for Button Battery Cathode Case
https://en.nc-net.or.jp/company/5140/product/detail/135457/
- 4-Cavities Progressive Die for Motorcycle Chain
https://en.nc-net.or.jp/company/5140/product/detail/152390/
Feel free to visit our website for more information on our products and technology.
---------------------------------------------------------------
Showa Precision Tools Co.,Ltd
〒236-0004
1-4-2 Fukuura, Kanazawa-ku,
Yokohama City, Kanagawa Prefecture, JAPAN
Sales Department:
TEL：+81-45-785-2237 FAX：+81-45-785-4411
Reception:
TEL：+81-45-785-1111 FAX：+81-45-785-4488
In this article we will introduce you a 4-cavities progressive die we conceived and manufactured for the mass production of motorcycle chains.
[ Features ]
- The sheared length has been increased by using carbide punches.
- The clearance at the piercing operation is very narrow and the tolerance of parts is only ±5µm.
[ Specifications ]
- Workpiece material: SAE5046H
- Workpiece material thickness: 2.0mm
- Tensile strength: 90kgf/mm²
- Production speed: 165 to 180 Shots per Minute
- Stamping operation: engraving -> piercing of the holes -> outer blanking
- Press: EH-80
- Press capacity: 80 tons
If you have any questions or concerns, please feel free to contact us.
[ Related technologies ]
Bearing Retainer for Automobile - Stamping Die
https://en.nc-net.or.jp/company/5140/product/detail/152031/
Progressive die manufacturing for automotive transmission parts (1)
https://www.nc-net.or.jp/company/5140/product/detail/138563/
Drawing dies for automotive transmission parts
https://www.nc-net.or.jp/company/5140/product/detail/138576/
Feel free to visit our website for more information on our products and technology.
---------------------------------------------------------------
Showa Precision Tools Co.,Ltd
〒236-0004
1-4-2 Fukuura, Kanazawa-ku,
Yokohama City, Kanagawa Prefecture, JAPAN
Sales Department:
TEL：+81-45-785-2237 FAX：+81-45-785-4411
Reception:
TEL：+81-45-785-1111 FAX：+81-45-785-4488
In this article we will introduce a progressive die technology we have developed for the press forming of electrical contacts used in light electric and home appliances.
Progressive die stamping technology has been developed by Showa since its founding in 1954.
In addition to light electrical and home appliances, we also have developed this technology for the mass production of other products in various fields such as food containers, automobile parts, and medical equipment.
For contact-related parts used in home appliances and relays, clad material contacts are fed into the die from its front side and then tightened together into a single part with the copper skeleton piece which has been cut in a previous station of the die.
The structure which tightens the contacts fed into the die by the parts feeder is also provided by us.
Since the workpiece material (usually copper, aluminum, brass, etc.) are rather soft and can easily be scratched, the die has been designed to prevent any filings.
[ Applications ]
Used for contact points in all kinds of home appliances and relays.
[ Specifications ]
- Punching, bending, coining and other forming operations in 10 to 30 progressive stations
- Compound die using parts feeders, etc.
- Use of a 30 to 60 ton press
Feel free to visit our website for more information on our products and technology.
---------------------------------------------------------------
Showa Precision Tools Co.,Ltd
〒236-0004
1-4-2 Fukuura, Kanazawa-ku,
Yokohama City, Kanagawa Prefecture, JAPAN
Sales Department:
TEL：+81-45-785-2237 FAX：+81-45-785-4411
Reception:
TEL：+81-45-785-1111 FAX：+81-45-785-4488
[ Progressive die for automotive transmission parts (1) ]
We would like to introduce here our progressive die manufacturing technology for automotive transmission clutch plates.
In a car, the "transmission" transmits the driving force from the engine to the wheels.
It is composed of gears and shafts of various sizes, and its "clutches" and "torque converter" are important to transmit the driving force.
The "clutch" is responsible for connecting and disconnecting the driving force by pushing on or separating two friction plates facing each other.
[ Features ]
- Shear surface ratio of 80% on outer diameter
- Number of shots per minute 2 to 3 times higher than with a fineblanking press.
- Composed of a master die set with inserts in order to reduce the die manufacturing cost.
[ Specifications ]
- Workpiece material: JSC270C-8B or SAE1008
- Sheet thickness: 1.6±0.005mm
- Product size: Φ141.7mm
- Workpiece material tensile strength: 35kgf/mm²
- Production speed: 70 shots per minute
- Die: Progressive 1 cavity die
- Press: UL-4000
We are looking forward to hearing from you if you have any questions or concerns.
[ Related Technologies ]
- Progressive die for automotive transmission parts (2)
https://en.nc-net.or.jp/company/5140/product/detail/170739/
- Progressive die for automotive transmission parts (3)
https://www.nc-net.or.jp/company/5140/product/detail/138594/
- Progressive die for automotive transmission parts (4)
https://www.nc-net.or.jp/company/5140/product/detail/138927/
- Progressive die for automotive transmission parts (5)
https://www.nc-net.or.jp/company/5140/product/detail/138933/
- Progressive die for automotive transmission parts (6)
https://www.nc-net.or.jp/company/5140/product/detail/138967/
- AIDA UL-4000 Press
https://ja.nc-net.or.jp/company/5140/product/detail/124196/
Feel free to visit our website for more information on our products and technology.
---------------------------------------------------------------
Showa Precision Tools Co.,Ltd
〒236-0004
1-4-2 Fukuura, Kanazawa-ku,
Yokohama City, Kanagawa Prefecture, JAPAN
Sales Department:
TEL：+81-45-785-2237 FAX：+81-45-785-4411
Reception:
TEL：+81-45-785-1111 FAX：+81-45-785-4488
[ Drawing die for Automotive Transmission Parts ]
Showa Precision Tools Co., ltd. has been providing the automotive industry with forming dies for automobile transmission parts for many years now.
We design dies, manufacture its individual parts, assemble them, prepare the die for production, and try it out before shipment, in accordance with the client's expectations.
[ Features ]
- The drawing of the part is done in one step by using gas cushions
- The forming process puts a lot of strain on the tool's parts, but a standard PVD coating is used to reduce wear and biting of the punch.
[ Specifications ]
- Workpiece material: JSH440W
- Sheet thickness: 3.2 mm
- Tensile strength: 35kgf/mm²
- Production speed: 35 to 65 shots per minute
- Press operation: compound die
- Number of cavities: 1
- Press: AIDA K-630
We are looking forward to hearing from you if you have any questions or concerns.
[ Related technologies ]
- Progressive die for automotive transmission parts (1)
https://en.nc-net.or.jp/company/5140/product/detail/170318/
- Progressive die for automotive transmission parts (2)
https://en.nc-net.or.jp/company/5140/product/detail/170739/
- Progressive die for automotive transmission parts (3)
https://www.nc-net.or.jp/company/5140/product/detail/138594/
Feel free to visit our website for more information on our products and technology.
---------------------------------------------------------------
Showa Precision Tools Co.,Ltd
〒236-0004
1-4-2 Fukuura, Kanazawa-ku,
Yokohama City, Kanagawa Prefecture, JAPAN
Sales Department:
TEL：+81-45-785-2237 FAX：+81-45-785-4411
Reception:
TEL：+81-45-785-1111 FAX：+81-45-785-4488
[ Progressive die for automotive transmission parts (2) ]
Showa Precision Tools has been providing the automotive industry with clutch plate stamping dies for transmissions for many years.
In this brief article we would like to introduce an example of a transmission clutch plate stamping die for which we have a lot of experience.
[ Features ]
- Highly rigid die, used on AIDA UL presses
- With a compact size thanks to the use of inserts, it is very easy to maintain compared to equivalent fineblanking dies.
[ Specifications ]
- Workpiece material: SAE1020 (equivalent to S20)
- Sheet thickness: 3.4 mm
- Tensile strength: 42kgf/mm²
- Sheared surface over the thickness: 2.21mm
- Die: one cavity progressive die
- Press: ULX-8000
- Press capacity: 800 ton
We are looking forward to hearing from you if you have any questions or concerns.
[ Related Technologies ]
- Progressive die for automotive transmission parts (1)
https://en.nc-net.or.jp/company/5140/product/detail/170318/
- Progressive die for automotive transmission parts (3)
https://www.nc-net.or.jp/company/5140/product/detail/138594/
- Progressive die for automotive transmission parts (4)
https://www.nc-net.or.jp/company/5140/product/detail/138927/
- Progressive die for automotive transmission parts (5)
https://www.nc-net.or.jp/company/5140/product/detail/138933/
- Progressive die for automotive transmission parts (6)
https://www.nc-net.or.jp/company/5140/product/detail/138967/
Feel free to visit our website for more information on our products and technology.
---------------------------------------------------------------
Showa Precision Tools Co.,Ltd
〒236-0004
1-4-2 Fukuura, Kanazawa-ku,
Yokohama City, Kanagawa Prefecture, JAPAN
Sales Department:
TEL：+81-45-785-2237 FAX：+81-45-785-4411
Reception:
TEL：+81-45-785-1111 FAX：+81-45-785-4488
 |
Blanking die（ Die manufacturing / Press die ） |
|---|
| Company name | Showa Precision Tools Co., Ltd. | Website URL | https://www.showa-seiko.co.jp |
|---|---|---|---|
| Street address |
Yokohama City Kanagawa Japan
[See map] |
Person in charge | Ishii |
| Telephone number | +81-45-785-1111 | Fax number | +81-45-785-4488 |
| Capital | 80,000,000 JPY | Employees | 91 |
| Annual sales | 1,612,000,000 JPY | EMIDAS Member Number | 5140 |
| Type of manufacturing | Jigs and tools / Industrial machinery / Medical equipment | ||
| Main 3 products |
|
||
| Primary clients |
|
||
| Large | Medium | Small |
|---|---|---|
| Designing | Mold designing | Progressive die designing (light electrical) Progressive die designing (auto) Drawing metal press die designing Transfer press die designing General metal press die 3D modeling (press) 3D modeling (plastic) NC data creation (press) NC data creation (plastic) |
| Designing | Test | Specimen processing |
| Designing | Industrial equipment designing | Automatic machinery manufacturing Industrial machinery designing Food industry machinery designing |
| Designing | Simulation | CAE fluid analysis |
| Development and production of prototype/Small-scale production | Machining | General-purpose milling General-purpose lathe machining Iron Stainless steel High rigid material Aluminum alloy Copper alloy Titanium alloy Nickel alloy |
| Development and production of prototype/Small-scale production | NC machining | Machining (vertical) NC milling NC lathe machining 5-face/5-axis machining |
| 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 | Grinding processing | NC plane grinding Plane grinding Form grinding Cylindrical grinding Profile grinding Jig boring Jig grinding Cylindrical mirror grinding Internal grinding |
| Development and production of prototype/Small-scale production | Jig manufacturing | General jig manufacturing |
| Development and production of prototype/Small-scale production | Prototype processing | Simplified/Molding prototype mold |
| Die manufacturing | Press die | Designing Manufacturing Part processing Plate machining Die set machining NC data creation 3D modeling Drawing die Bending die Blanking die Forming die Fine blanking die Roll forming die Shaving die Progressive die Transfer press die Single press die Below 60 t 60 - 300 t Over 300 t Compound die |
| Die manufacturing | Plastic mold | Manufacturing Part processing Plate machining Mold base machining NC data creation 3D modeling Vacuum/Air pressure molding die |
| Surface treatment | Lap polishing | Lap mirror polishing |
| Assembly/Inspection | Assembly | Precision equipment assembly |
| Assembly/Inspection | Repair | Die repair |
| Assembly/Inspection | Inspection | Metal press |
| Product manufacturing | Production property | Other industrial machinery manufacturing Food industry machinery manufacturing |
