System and method for manufacturing reduced thread height point fasteners
AssigneeResearch Engineering & Manufacturing, Inc.
InventorJohn R. Reynolds
Life of this patent
Estimating the term…
Abstract
A system and method for manufacturing reduced thread height point fasteners. Thread rolling dies are created with a first set of grooves designed to form the body threads on a blank fastener and a second set of grooves, which may vary over the length of the die, to form the lead threads on the blank fastener. The second set of grooves are designed to minimize the flat surface areas on the shaft of the fastener between the lead threads, thereby reducing the known manufacturing problems in producing variable height thread fasteners using thread rolling.
Claims11
A system for thread rolling a fastener, the system comprising:
- a first die, the first die having:
- a first set of grooves, the first set of grooves configured to form a first set of threads on the fastener when the fastener is rolled between the first die and a second die, and
- a second set of grooves, the second set of grooves configured to form a second set of threads on the fastener when the fastener is rolled between the first die and the second die;
- and
- the second die having:
- a third set of grooves, the third set of grooves configured to form the first set of threads on the fastener when the fastener is rolled between the first die and the second die, and
- a fourth set of grooves, the fourth set of grooves configured to form the second set of threads on the fastener when the fastener is rolled between the first die and the second die.
Dependencies are inferred from the claim text.