JPS62105730U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a side view of an embodiment of this invention, Fig. 2 is a schematic diagram of the rolling state of this invention, Fig. 3 is a side view of the conventional product, and Fig. 4 is a schematic diagram of the rolling state of the conventional product. , Figure 5 is a schematic diagram of the rolling method using a flat rolling die,
FIG. 6 is a perspective view with the upper die of FIG. 5 removed. 1, 2... Rolled flat die, 3... Teeth group with bite, 3
b... Top roll tooth group with bite, 4... Finished tooth group,
5... Relief tooth group, 8... Totsuprol teeth, 10...
...groove, L...bottom of die, P...pitch.

Claims (1)

[Scope of utility model registration request] A pair of flat dies consisting of a tooth group with tooth height gradually increasing from the tip, a finishing tooth group following the biting tooth group, and a relief tooth group with tooth height decreasing sequentially toward the rear end are rolled. In flat rolling dies, which are arranged opposite to each other to sandwich the object, and which plastically forms a tooth profile on the outer periphery of the object to be rolled by the relative movement of the flat die, a toothed top roll tooth group is provided in the first half of the toothed teeth group, and the teeth of the top roll tooth group are The root height of the tooth from the tip to the end is gradually lowered with a root slope that causes a certain amount of interference on the tooth tip of the object to be rolled, and the pitch of each tooth of the top roll tooth group is adjusted by half a rotation of the object to be rolled. A rolled flat die characterized by a tooth shape that expands in the same pattern every minute.