FASTEC SYSTEM
ＲWhat is “FASTEC?”FASTEC is KURODA’S revolutionary Fastening and Skewing Technology thatallows assembly work to be done inside of the die during stamping.
This technology was developed into actual
working machinery by KURODA,
Japan’s leading maufacturer of precision
machinery. ”FASTEC” (Trademark reg.) stands forFastening, Skewing and Technology .

ＦＡＳＴＥＣ SYSTEM have ３ type of stacking method.

・ＦＡＳＴＥＣ
・Concavity stacking
Sell dieLow cost・Many know-how・Handle to various shape・ＬＡＳＥＲ ＦＡＳＴＥＣ• Spot welding stacking
Sell product(core etc.)
Specialized to small product・Strong stacking force from small shape

・ＧＬＵＥ ＦＡＳＴＥＣ• Glue stacking
Sell product(core etc.)
New technology・Possible to stack thin material・Realized to usual material

FASTEC SYSTEM
ＲSell die

What “FASTEC”dies do ?
FASTEC dies incorporate automatic fastening, rotation, skewing, counterboring androtational skewing functions to manufacture core laminations efficiently during acontinuous press run.

１．Fastening

２．Rotation

The die forms convexity andconcavity on the lamina.
When the convexity are pressed tothe concavity in the stamping-out
process., the upper and the lowerlaminas are fastened. When therequired number of laminas arefastened, they are separated with apierced lamina.

If lamina with slightly different
thicknesses are stacked, the shape ofthe lamina will differ from the design.
To minimize differences caused by thethickness of each lamina, the stamping
die stamps out the material whilerotating at intervals and then, bystacking the lamina, quality products
free from inclination can be produced.

3．Skewing
Rotor cores are sometimes skewed toimprove the performance of motors.
The FASTEC die serves to skew thelamina at any angle when fastening
rotor cores.
You can choose between themachanically driven skew and thestep-motor-driven skew according toyour requirements.

LaminaNo rotation

180°rotation

４．Counterbore
The rotor shaft of a motor requirea bore with one two steps toaccommodate the bearing. The FASTEC
system is capable of counterboringby simply presetting the number oflamination of A,B and C.

FASTEC PERIPHERAL DEVICESTACK HEIGHT CONTROLSYSTEM
The thickness of hoops used forstacking lamina and other parts,
tend to vary. This results in anerror in the thickness of finishedproducts even if each product iscomposed of the same number ofstacked lamina. The stack heightcontrol system consisting of alamina thickness measuring sensor
and a control unit equipped withCPU serves to eliminate thisthickness error in finishedproducts to attain the designed
thickness independently of thedifference in material thickness.

5．Rotational skewing
The process is a combination of
2.Rotationg function and 3. Skewing
function. This patented Rotationalskewing high technology has been
innovated to produce reliable
products. All die functions arecontrolled through the control box.

CONTROL BOX
Wide range of parameters forcontrolling the FASTEC system areavailable: The FC series areequipped with lamina
counting/control functions. The
HFC series are equipped withstack height control functions,etc.

The FASTEC system consists of the dies for stamping core laminations and the control box for
setting following functions.

CONSTRACTION OF FASTEC SYSTEM
Air cylinder for separating the core
Stack height measuring device
System A (Roller contact)
Dimensions (W×L):
Single row：450×630mm
Double rows：600×1140mm

Coiler

ＦＡＳＴＥＣ die

LevelerPressmachineFCseries

HC5SHC5W

HFCseriesﾞ

Converter

STACK HEIGHT CONTROLSYASTEMFC series +HC5S/HC5W or HFC series : System A of Roller contact
HFC series ＋Converter： System B (Non-contact measuring)

Approach of motor core backward operation
INSULATOR PAINTING Purpose：Core insulate by coating
Electro painting

Press item

Barrel painting

After coating

Press item

MAGNET BOND

After coating

Innovative In-die Motor Core Manufacturing System

Glue FASTEC SYSTEM
Ｒ

Sell product(core etc.)2009 Japan Excellent Manufacturing Technology Award
2009 Super Manufacturing Automotive Parts Award

Ｐｒｅｓｓ ｍａｃｈｉｎｎｅ

DieＣｏｎｔｒｏｌｌｅｒ

Silicon Steel
Tank

Significant Energy Efficiency Gain:
Significant Energy Efficiency Gain:
Gluing creates insulation and reduces iron loss
Gluing creates insulation and reduces iron loss
Better Alignment:
Better Alignment:
Lack of mechanical stress ensures high stacking accuracy
Lack of mechanical stress ensures high stacking accuracy
Higher Rigidity:
Higher Rigidity:
Gluing leads to higher rigidity and decreases vibration during rotation
Gluing leads to higher rigidity and decreases vibration during rotation
Low Noise:
Low Noise:
Flat and even fastening of steel sheets reduces wind noise
Flat and even fastening of steel sheets reduces wind noise

Ｄｅｃｒｅａｓｅ ＣＯ２

Glue FASTEC core is a product that can save energy andprotect environment

Glue FASTEC SYSTEM

Significant Energy Efficiency Gain ！！
Kuroda has developed a new process in which we use glue to fix steel sheets
together in a die. Glue creates insulation and reduces iron loss. Glue FASTEC
System provides high-efficiency, high-quality and precision motor cores .

Problem of Conventional Core Manufacturing
Conventional core manufacturing (mechanical fastening and laser fastening)leads to low motor efficiency by short circuit between silicon steel.
Mechanical Fastening

Laser Fastening

Short circuits

Short circuits

Glue FASTEC System
Glue creates insulation, prevents short circuits and thus reduces eddycurrent.

Glue®
FASTEC

Silicon Steel(Trademark) stands for Fastening and Skewing Technology.

GlueSell product(core etc.)
High-precision small sized motor core

LASER FASTEC TECHNOLOGY is the one which is developed for mass-production of high-precision small
sized motor core by YAG laser in stacking lamination. The regulation of product shape has a tendency notto be influenced and the small sized lamination core which can not be made so far can be mass –producedwith stable strength and quality.

CONSTRACTION OF LASER FASTEC
Laser controllerHigh Speed press
MachineOptical Fiber
YAG Laser Generator

Chiller Unit

Laser interception cover

Automatic Stacking by YAG LASER WELDING

Optical Unit

LASER FASTEC CORE

Each lamination can be pointed and welded from the side. There is some casethat a few lamina can pointed and welded at the same time taking into accountof efficiency .

Micro-Motor Core●For vibration motor●For digital camera●For VTR camera●For printer

Laser
Laser
（Scale ：１mm）

LaminaEach Lamina

LaminaSpindle motor core
A few lamina

The amount of energy and the focus point can be controlled depending on thethickness, shape, and material of product.

●For HDD（Scale：１mm）

KURODA PRECISION INDUSTRIES LTD
HEAD OFFICE
Kawasaki Tech Center,
580-16 Horikawa-cho, SHIMOHIRAMA, SAIWAI-KU, KAWASAKIKANAGAWA, 212-8560, JAPAN
TEL::81-44-555-3924
FAX: 81-44-555-5825
NAGOYA BRANCH
2-243, KAMIYASHIRO,MEITOU-KU,NAGOYA,AICHI, 465-0025,JAPANTEL: 052-771-4211
FAX: 052-772-6722
E-mail：ps_j@kuroda-precision.co.jp
http：//http://www.kuroda-precision.co.jp
MALAYSIA：KURODA PRECISION INDUSTRIES (M) SDN.BHD.
Block C & D, Lot 3, Solok Waja 3, Bukit Raja Industrial Park, 41050, Klang,Selangor, Malaysia.
TEL 60-3-33413790 (Hunting Line) FAX 60-3-33413736
CHINA：KURODA PRECISION INDUSTRIES PINGHU CO.,LTDNO.256 Chengbei Road. Danghu Town Pinghu City. Zhejiang. P.R. China.P.C:314200
TEL 86-573-85010786 , 86-573-85010790
FAX 86-573-85014123

2014.5