B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
153/24
B21D 21/00 (2006.01)
Patent
CA 1051763
ABSTRACT OF DISCLOSURE Disclosed herein is a method of and apparatus for forming a cutting link including a link portion, a shank portion extending from the link portion in angular relation thereto, and a toe portion extending from the shank portion in angular relation thereto and in transverse relation to the link portion, from a saw chain cutting link blank including a link part which provides the link portion, a second part which extends from the link part and which is formed to provide the shank portion, and a third part which extends from the second part and which is formed to provide the toe portion. The method comprises the steps of placing the blank in an apparatus or die including a stationary die part and first and second movable die parts, forming the shank portion from the second part of the blank and partially forming the toe portion from the third part of the blank by bending the second part of the blank into the shank portion and the third part of the blank into a position extending in generally parallel and offset relation to the link portion in response to movement of the first movable die part in one direction relative to the stationary die part, completing the forming the third part of the blank into the toe portion by engaging and cold flowing the extending third part of the blank into the toe portion in response to movement of the second die part in a direction transverse to the one direction and relative to the stationary die part, and removing the formed link from the die. ABSTRACT OF DISCLOSURE continued The apparatus comprises a stationary die part, means including a first die part movable relative to the stationary part in a first path and operable, in response to movement of the first movable die part relative to the stationary die part, to bend the shank part relative to the link part to form the shank portion into the angular relation and to partially bend the toe part relative to the shank part, and means including a second die part movable in a direction transverse to the first path and relative to the stationary die part and operable, in response to movement of the second die part relative to the stationary die part, to cold flow the toe part to form the toe portion into the angular relation to the shank portion and into the transverse relation to the link portion.
259146
Northey Douglas A.
Weber Stanton W.
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