Method of molding a one piece plastic ball nut

Details Method of molding a one piece plastic ball nut Method of molding a one piece plastic ball nut

1987-05-26

1989-08-22

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

Utilizing surface to be reproduced as an impression pattern

744248R, 264227, 264318, B29C 3342, B29C 3902, B29D 1500

Patent

active

048593940

ABSTRACT:
By using an existing ball nut and ball nut screw of a ball nut screw assembly as master models, imprint molds can be molded from a silicone rubber material which positively profiles the threading of the ball nut and ball nut screw with the crossover channel in the master model of the ball nut. A thermoset resin is added to the imprint molds and cured to form unitized all plastic ball nuts and ball nut screws with the helical grooving for accommodating the train of balls including the crossover channel in the ball nut molded therein to thereby provide an easily reproducable ball nut and screw assembly.

REFERENCES:
patent: 3313873 (1967-04-01), Dembiah
patent: 4173907 (1979-11-01), Lundgren
patent: 4272476 (1981-06-01), Benton
patent: 4342235 (1982-08-01), Benton
"Silicones Ease Many Production Tasks", Plastics World, Oct. 63, pp. 214-215.

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