TOP > Product Information
The products of Yoshikawa Kogyo Finetech with high technology are widely used
for various scenes from large size such as automotive parts to small size
such as smartphone parts which require delicate movement.
Used in engine parts of vehicls and electric forklifts,and motor for generators.
See more
Used for parts of cars such as wiper,sunroof,and speed meter.Also for home appliances such as vacuum cleaner and airconditioner,and latest equipment drone.
See more
Used for the parts that require delicate movement such as zoom motor of digital camera.
See more
Used for TV set,personal computer,and automotive electrical components.
See moreWe produce products of various specifications. We can use the precise press working and caulking technologies to finish even a quite small part. In addition, we are sensitive enough to fulfill any demands of our customers.
Please consult us any issues even if they seem to be insignificant.
Use combinations of proprietary tools and devices to produce highly precise products!
Large-sized motor cores mounted in automobiles, etc. Precise press working and caulking technologies enable us to realize excellent accuracy. Additionally, rotational lamination is also employed.
Using our proprietary oil hydraulic cylinder to apply a back pressure enables us to produce less curved products. In Japan, it is said that only a few companies can produce tools of this size for motor cores.
Our main products. Utilized in various situations of daily life such as home electric appliances.
Used in home electric appliances such as vacuum sweepers and driers, and smartphones. This group is one of our main products.
Higher productivity with a high speed of 700SPM or higher, and the minimum thickness of laminated materials is as thin as 0.1 mm. There is only an insignificant gap between the internal and external diameters, and we can cope with size adjustments even in micron unit.
High precision products with the squareness of 0.1 mm or less corresponding to the customers' demands.
A divided motor core that joins parts in an annular shape. How to reduce errors is the most important point.
Our caulking adjustment technology keeps a squareness of 0.1 mm or less. We can satisfy customers' needs with our high technical capability.
Fine caulking technology is utilized in a part smaller than a rice grain.
A motor core smaller than a rice grain. Fine caulking enables a precision that cannot be attained by welding.
In 2000, we succeeded to develop lamination of vibration motor cores for mobile phone for the first time in the world, which received attention. The technology is utilized for the zoom function of digital cameras and the vibration function of game machine controllers, which require high accuracy.
Bent sections can be machined into various shapes according to the customers' demands.
Bent motor core which enables smoother winding of coil. It leads to an increase of material yield rate.
We have a number of processing results for various shapes of bent sections. Consult us for any shape.
The press working cost has successfully been reduced about 90%.
We use the press working and caulking technologies to produce Irregular-shape Laminated Parts which are traditionally processed by cutting work.
Introduction of high productivity and precision press working has led to about 90% of cost down.
Highly precise flatness and parallelism have been achieved with the fine adjustment technology of ultimate caulking.
Precision parts used for the driving motor control of the hybrid automobile and electric vehicle and for the torque sensor of the electric power steering.
For these parts, highly precise flatness and parallelism are kept by using our proprietary fine adjustment technology of caulking. The achieved flatness is 0.1 mm or less.
The results of our microfabrication technology which has been developed and accumulated for many years. Also applied to other products.
Our microfabrication technology which has been developed and accumulated in our lead frame production for many years are utilized in other products.
Press working of lead frame requires a minute maintenance technology. Please rely on YOSHIKAWA KOGYO FINETECH whose strong point is microfabrication.
We manufacture tools that can satisfy the customers' demands, including selection of materials and structures.
We also manufacture tool bodies required for press working. We select appropriate edge materials of tool including magnetic steel sheets, copper materials, aluminum materials, SUS materials, etc., according to the material specified by the customer.
We can produce high precision products under the established information control structure by implementing all processes from design to processing in our company. In addition, the temperature and humidity are completely controlled in our factory. As the result of these ruling passion, errors are kept within ±1μm.
A longer service life of tool can be achieved by selecting the most appropriate materials.
We produce and sale any parts incorporated in our tools.
We select optimum tool materials based on the feedback of the know-how gained in press working. In addition, we can cope with any tools that are not manufactured by us provided that the corresponding drawings are presented.
Bonding thin plate materials contributes to the improvement of motor characteristics.
Lamination technology which automatically applies adhesion bond between plates to bond them. Adhesive lamination of thin plate materials enables us to produce high characteristic motors.
Plate thickness：0.1mm～0.5mm
Detailed shape：External diameter of product：Φ20mm～Φ200mm
Steadily cope with the materials for which caulking lamination is difficult.
For thin plates or shapes for which caulking lamination is difficult, the laser welding lamination can be applied. We have high productivity laser welding machines supporting a press speed of 600SPM.
Plate thickness：0.1mm or thicker
Product use：Home electric appliance motors
Achieved ultra-high precision press working with a total pitch of ±2.5μ or less.
We use our proprietary special punching method. Ultra high precision press working is achieved within ±2.5μm total pitch for 300 slits or more.
Plate thickness：0.02mm～
Product use：Printer parts, etc.
Large-sized Motor Core
Medium/small-sized Motor Core
Divided Motor Core
Micro Motor Core
Bent Core
Irregular−shape Laminated Parts
Resolver Sensor Core
Lead Frame
Tool
Parts for Tools