Metal deforming – By application of fluent medium – or energy field – With actuated tool engaging work
Patent
1984-02-27
1986-04-08
Combs, E. Michael
Metal deforming
By application of fluent medium, or energy field
With actuated tool engaging work
29421R, 29523, 29727, 72 61, B21D 3908, B23P 1102
Patent
active
045804265
ABSTRACT:
An improved sleeving apparatus and process capable of simultaneously expanding and rolling an interference joint between a reinforcing sleeve and a heat exchanger tube is disclosed herein. The apparatus generally comprises an elongated housing onto which upper and lower rollers are mounted, and upper and lower hydraulic expanders capable of applying a radially expansive force onto a sleeve across the length of the rollers. The rolls in the rollers are driven by a common drive shaft which is coupled to a hydraulic motor. The apparatus includes a torque controller including a torque sensor and a computer for controlling the torque, and hence the rolling pressure, that the rollers place on the inside surface of the sleeve. The torque sensor is mechanically connected to the output of the driving means of the drive shaft, and electrically connected to the microcomputer. The microcomputer is connected to the control valve of the power supply of the hydraulic motor driving the drive shaft. The torque value programmed into the microcomputer of the torque controller may be chosen so that the rolling pressure exerted by the rolls elongates the metal in the sleeve at the interference joint to the same extent to which this metal is contracted by the hydraulic expanders, thereby resulting in a substantially stress-free joint.
REFERENCES:
patent: 942184 (1909-12-01), Persons
patent: 1737539 (1929-11-01), Petry
patent: 2238212 (1941-04-01), Cornell
patent: 2954064 (1960-09-01), De Mers
patent: 3585701 (1971-06-01), Stary
patent: 3906771 (1975-09-01), Martin
patent: 3924433 (1975-12-01), Martin
patent: 4007699 (1977-05-01), Clemens
patent: 4134286 (1979-01-01), Martin
patent: 4210991 (1980-07-01), Cooper
patent: 4453304 (1984-06-01), Astill et al.
Combs E. Michael
De Paul L. A.
Westinghouse Electric Corp.
LandOfFree
Hybrid expansion apparatus and process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hybrid expansion apparatus and process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid expansion apparatus and process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2059182