SU988437A1

SU988437A1 - Hammer die shank

Info

Publication number: SU988437A1
Application number: SU813309232A
Authority: SU
Inventors: Василий Павлович Беркутов; Леонид Демидович Демидов; Геральд Николаевич Хохряков; Александр Михайлович Юминов; Иван Семенович Мокшаев
Original assignee: Предприятие П/Я А-1950; Предприятие П/Я М-5481
Priority date: 1981-04-16
Filing date: 1981-04-16
Publication date: 1983-01-15

Description

Изобретение относится к машиностроению, в частности к конструкциям молотовой штамповой оснастки.The invention relates to mechanical engineering, in particular to designs of hammer dies.

Известен хвостовик молотового штампа типа «ласточкин хвост», содержащий торцовые наклонные к ней боковые грани, а так- 5 же галтели перехода от наклонных граней к заплечикам штампа [1].There is a well-known dovetail type hammer shank containing end side faces inclined toward it, as well as 5 fillets of transition from inclined faces to the shoulders of the stamp [1].

Недостатком известного хвостовика является высокая концентрация напряжений в области галтелей и, как следствие, такая стойкость штампа.A disadvantage of the known shank is a high concentration of stresses in the fillet region and, as a consequence, such a stamp resistance.

Цель изобретения — повышение стойкости штампа. еThe purpose of the invention is to increase the durability of the stamp. e

Поставленная цель достигается тем, что в хвостовике штампа «ласточкин хвост», содержащем торцовую и наклонные к ней бо- 15 ковые грани, а также галтели перехода от наклонных граней к заплечикам штампа на торцовой грани по всей длине хвостовика выполнены скосы, при чем опорная поверхность торцовой грани выполнена шириной 0,7-0,9 расстояния между галтелями, а ²⁰скосы выполнены под углом 172—178° к опорной поверхности.This goal is achieved by the fact that in the shank of the stamp “dovetail” containing the end face and side edges inclined to it, and also the fillets of the transition from the inclined faces to the shoulders of the stamp on the end face along the entire length of the shank, bevels are made, and the supporting surface the end face is made with a width of 0.7-0.9 of the distance between the fillets, and ²⁰ bevels are made at an angle of 172-178 ° to the supporting surface.

На чертеже схематически изображен предлагаемый хвостовик штампа.The drawing schematically shows the proposed shank of the stamp.

Хвостовик содержит торцовую 1 и наклонные 2 к ней грани, а также галтели 3 перехода от наклонных граней 2 к заплечикам 4 штампа. По всей длине хвостовика выполнены скосы 5 под углом d = 172— 178° к торцовой грани 1, причем опорная поверхность имеет ширину а, равную 0,7-0,9 расстояния в между галтелями.The shank contains the end face 1 and the faces inclined 2 to it, as well as the fillets 3 of the transition from the inclined faces 2 to the shoulders 4 of the stamp. Bevels 5 are made along the entire length of the shank at an angle d = 172—178 ° to the end face 1, and the supporting surface has a width a equal to 0.7-0.9 of the distance between the fillets.

Коэффициент концентрации напряжений в области галтелей в этом случае равен 1,1 против 2,7 в известном штампе.The stress concentration coefficient in the fillet region in this case is 1.1 versus 2.7 in the known stamp.

Экономический эффект от внедрения изобретения обеспечивается за счет повышения стойкости штампов по сравнению с известными.The economic effect of the implementation of the invention is provided by increasing the durability of the dies in comparison with the known.

Claims

The invention relates to mechanical engineering, in particular to the design of hammer die tools. The shank of the dovetail type stamp, containing end faces inclined to it, as well as the fillets of the transition from the inclined faces to the shoulders of the stamp 1, is known. A disadvantage of the known shank is a high concentration of tension in the area of the fillets and, as a result, stamp. The purpose of the invention is to increase the durability of a stamp. bevels, with the support surface of the end face made 0.7-0.9 wide between the fillets, and the bevels made at an angle of 172-178 ° to the support surface. The drawing schematically shows the proposed shank stamp. The shank contains face 1 and 2 inclined to it, as well as the fillets 3 transitions from inclined faces 2 to the shoulders 4 of the stamp. Along the entire length of the shank made bevels 5 at an angle cX. 172-178 ° to the end face 1, the support surface having a width a equal to 0.7-0, 9 distances in between the fillets. The coefficient of stress concentration in the area of fillets in this case is 1.1 versus 2.7 in the well-known stamp. The economic effect of implementing the invention is provided by increasing the durability of the dies compared to. famous. Claim 1. Shank of the dovetail hammer stamp containing front and side faces inclined to it, as well as transition fillets from inclined edges to the shoulder of the stamp, characterized in that in order to increase durability by reducing stress concentration in the area of fillets on the end face on

the entire length of the shank is made bevels, and the supporting surface of the end face is made 0.7-0.9 in width between the fillets.

2. The shank of claim 1, distinguished by 1, is that the said bevels are made at an angle. 172-178 ° to opopFyuyu surface.

Sources of information taken into account in the examination

1. Forging hammers h stamping. The dimensions of the elements of fasteners stamps and boykbv to the woman and the pillow. GOST 6039-71, M., 1971 (prototype).