Abstract A method of manufacturing a hub member (50) for use in a coaster brake (52). A supply of tubular stock material (8) is transported to a work station and the interior thereof machined to establish first and second diameters (16) and (17), respectively, separated by a shoulder (15). A cylindrical member (10) is cut from the stock (8) and placed in a fixture (36). A disc or ring member (30) has a peripheral surface with a serrated section (32) separated from a shoulder (33) by a groove (35). The disc or ring member (30) is placed on a second fixture (38) and brought into alignment with diameter (16) of the cylindrical member (10). A ring of brazing material (37) is placed in groove (35). A force is applied to move disc member (30) into the diameter (16) of the cylindrical member (10). The serrated surface (32) on disc or ring member (30 ) engages diameter (17) to distort material therein and establish a mechanical joint (44). The force continues to move the second fixture (38) toward the first fixture (36) until face (42) on shoulder (33) of the disc or ring member (30) engages shoulder (15) on cylindrical member (10). Thereafter, the cylindrical member (10) with disc or ring member (30) insert is transported to an oven and heated sufficiently to flow the brazing material (37) into joint (44) to establish a brazed joint for the hub member (50).
A method of manufacturing a hub for retaining a clutch and expandable shoes of a coaster brake, comprising the steps of: transportating a supply of tubular material to a work station; machining the interior of said tubular material to establish first and second diameters therein separated by a first shoulder; cutting a cylindrical member from said tubular material; placing said cylindrical member in a first fixture; placing a ring member having a peripheral surface with a serrated section separated from a second shoulder by a groove in a second fixture; moving said second fixture with respect to said first fixture to align said ring member with said second diameter of said cylindrical member; applying a force to said second fixture to bring said serrated section into engagement with said first diameter of the cylindrical member; and continuing to move said second fixture toward said first fixture to control the distortion of material from said first diameter by said serrated section until said second shoulder engages said first shoulder and thereby establishes a mechanical joint therebetween.
Claim 2
Independent Claim
175 words
A method of manufacturing a hub for retaining a clutch and expandable shoes of a coaster brake, comprising the steps of: transportating a supply of tubular material to a work station; machining the interior of said tubular material to establish first and second diameters therein separated by a first shoulder; cutting a cylindrical member from said tubular material; placing said cylindrical member in a first fixture; placing a ring member having a peripheral surface with a serrated section separated from a second shoulder by a groove in a second fixture; moving said second fixture with respect to said first fixture to align said ring member with said second diameter of said cylindrical member; applying a force to said second fixture to bring said serrated section into engagement with said first diameter of the cylindrical member; and continuing to move said second fixture toward said first fixture to control the distortion of material from said first diameter by said serrated section until said second shoulder engages said first shoulder and thereby establishes a mechanical joint therebetween.
Claim 3
Dependent Claim
41 words
The method, as recited in claim 1, further including the steps of: placing a brazing material in said groove on said peripheral surface of said ring member prior to moving said ring member into said second diameter of said cylindrical member.
Claim 4
Dependent Claim
76 words
The method, as recited in claim 2 further including the step of: transporting said cylindrical member with the ring member insert from said first and second fixtures to an oven where the temperature is sufficient to flow the brazing material from said groove into the serrated section and develop a brazed joint with said first diameter to reinforce said mechanical joint sufficient to prevent rotative movement of the ring member with respect to the cylindrical member.
Claim 5
Dependent Claim
44 words
The method as recited in claim 3 further including the step of: forming a tapered section on the interior surface of said ring member, said tapered section being engaged by the clutch to impart rotative torque from a drive member into said cylindrical member.
Claim 6
Dependent Claim
10 words
The product produced by the method recited in claim 3.