山本精機 List of Products and Services

Traditionally, the hole drilling for ultra-small deep-drawn parts was done from the outside. However, we received a request from a customer to drill holes from the inside without leaving any burrs on the inner side of the deep-drawn parts. As a result, we have established the "hole drilling technology for ultra-small deep-drawn parts" that allows drilling from the inside. By drilling holes from the inside and applying a barrel, we have made it possible to create ultra-small deep-drawn hole-drilled parts without burrs. 【Features】 ■ By using a progressive die, it is possible to process burr-free hole-drilled parts at a low cost. ■ Limit for the diameter of lateral holes: The minimum diameter for lateral holes is Φ1.0. *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Other Auto Parts

As for the lamination technology of motor cores, traditionally, dowel pin fastening and welding were common. However, when laminated using dowel pin fastening or welding, there was a disadvantage that the insulating coating of the electromagnetic steel sheets could be damaged, leading to the generation of eddy currents. Therefore, we established a technology called "vacuum impregnation adhesive lamination," which involves vacuuming the adhesive to penetrate between the layers and laminate the core. Since we use adhesive for lamination, it is possible to protect the insulating coating. This helps suppress the generation of eddy currents, reducing iron losses and thus minimizing energy loss. 【Advantages】 ■ No damage to the insulating coating during lamination - Non-energized cores without current can be achieved between layers ■ High packing density of the core (98-99%) can be expected ■ Capable of accommodating thin sheets and complex-shaped cores *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Other motors
• Other Auto Parts

Our company specializes in layered processing by fitting and stacking the convex and concave dowels of sheet materials punched within molds. By applying conventional layering technology, we are able to realize delicate shapes, complex shapes, and deep shapes of parts that are difficult to achieve through machining, one after another. Please feel free to contact us if you have any requests. 【Features】 ■ Capable of processing delicate parts ■ Can be processed with minimal force, extending the lifespan of press molds ■ High precision step processing possible through thin sheet punching ■ Improved adhesion and airtightness through impregnation bonding ■ Hollow processing possible even for small parts ■ Capability to create tapped holes *For more details, please download the PDF or contact us.

• Processing Contract