Die Set

Die Set

Die set is a guide that secures dies to the press and enables accurate vertical motions. For the improvement of the precision of products, it is required that the die set surely hold dies, concentricity and coaxiality (flatness and perpendicularity) of cope and drag be accurate, and the replacement of dies be easy.

NICHIDAI’s Enclosed Die Set

When attached to a generic press, the “enclosed die set” NICHIDAI has developed has a mechanism to enable complex-shaped products to be forged by customer’s mechanical press. Just changing the length of the pantograph enables the mass production of a wide variety of enclosed forgings.

Comparative table of hydraulic and gas types

Hydraulic type Gas type
(1)Actuating force Mineral oil N2Gus
(2)Cylinder / Piston Special Generic
(3)Number of pieces more than 1
(4)Capacity range
(set pressure)
2,000KN 2,000KN
〜20MPa 〜14MPa
(5)Pressure control Yes No
(6)Enclosing stroke One side 〜40mm 〜40mm
Both sides 〜25mm 〜25mm
(7)Production speed 〜38spm 〜580mm/sec
(8)Ancillary equipment Hydraulic device
(9)Other peripheral equipment Piping, cooling water, etc. None

Pantograph mechanism

Pantograph mechanism

Advantage of enclosed forging

図:ダイセットのメリット

Cases for formed products

精密鍛造金型イメージ

Inner race

精密鍛造金型イメージ

Bevel gear

精密鍛造金型イメージ

Cross joint

List of Products

Hydraulic enclosing mechanism with pantograph system die set

[Specifications (actual production)]

・Enclosing load:max1,960KN

・Enclosing stroke:20~30mm(Both sides)

・Enclosing stroke:20~50mm(One side)

・Press used:200~1,250ton

・Die height:500~1,200mm

・Slide stroke:200~4,000mm

Gas pressure enclosed die set

[Specifications (actual production)]

・Enclosing load:max1,960KN

・Enclosing stroke:25~50mm(One side)

・Press used:600~1,200ton

・Die height:600~1,200mm

・Slide stroke:400~500mm

Die Set

Hydraulic back pressure die set

[Specifications (actual production)]

・Enclosing load:max3,920KN

・Enclosing stroke:50~70mm

・Press used:600~1,000ton

・Die height:900~1,200mm

・Slide stroke:400mm

Gas pressure enclosed die set

[Specifications (actual production)]

・Enclosing load:max4,340KN

・Enclosing stroke:45~55mm

・Press used:600~1,000ton

・Die height:1,000mm

・Slide stroke:400mm

Refer to the catalog for details.

Download Catalog:Enclosed Die Set(797KB)

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