Process for producing a connection of an insert part to a tubula

Details Process for producing a connection of an insert part to a tubula Process for producing a connection of an insert part to a tubula

1998-03-10

2000-01-11

Look, Edward K.

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

Turbine regenerative pump

415 552, 415 553, 415 554, 415 2131, 4152141, 41742314, F04D 104, F04B 2100, F04B 1700

Patent

active

060128968

ABSTRACT:
The insert part (12) is introduced into the tubular part (10) from one end and comes to butt, in the direction of the longitudinal axis (11) of the tubular part (10), against a stop (24). At its end into which the insert part (12) is pushed, the tubular part (10) exhibits a region (30) with increased outer cross section. An annular tool part (36) with an opening (38) is pushed over the tubular part (10), from its other end, the cross section of which opening is smaller than that of the region (30) of the tubular part (10) with increased outer cross section. The tool part (36) is drawn over the region (30) with increased outer cross section, with the result that said region (30) is forced radially inwards, plastic deformation taking place in the process, and comes to butt, against the insert part (12), in doing so fixing the latter in the direction of the longitudinal axis (11). The tubular part (10) is elastically expanded when the tool (36) is drawn over the region (30) with increased outer cross section and then springs back, as a result of which the retaining force on the insert part (12) is increased.

REFERENCES:
patent: 4692092 (1987-09-01), Matsuda et al.
patent: 4958984 (1990-09-01), Aoi et al.
patent: 5399075 (1995-03-01), Frank et al.
patent: 5401147 (1995-03-01), Yu

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