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Home Metal Working Process-for-the-assembly-of-engines

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 Process for the assembly of engines

Details
Inventors: Schlegel, Mark; Rihel, Jerry P.; Monocello, Lawrence T.; Link, Ronald L.; Duzyk, John A.;
Assignee: General Electric Company (Schenectady, NY)
Primary Examiner: Bryant; David P.
Assistant Examiner: Cozart; Jermie E.
Attorney, Agent or Firm: Welsh & Katz, Ltd, Rowold; Carl

A process for assembling an engine from an engine frame includes the steps of defining a plurality of work steps necessary to assemble the engine. Each of the work steps has associated therewith a time period for carrying out that work step. A sequence of work steps is established to effect complete assembly of the engine. A plurality of work stations is defined, including a first work station and a last work station, for carrying out the work steps. Each work station includes at least one of the work steps and defines an assembly sequence. Work steps are allocated within the work stations in the assembly sequence to effect an aggregate of the time periods at each station for carrying out the work steps within that work station. The aggregate is about equal to respective aggregates of time periods at each of the other stations for carrying out the work steps within these other work stations. An engine frame is conveyed through the work stations, and the work steps are performed on the engine frame at each of said work stations in the established sequence to complete assembly of the engine. The time period that the engine frame resides at any of the work stations is levelized so that the time period at any one station is substantially equal to the time period that the engine frame resides at any of the other work stations.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS While the present invention is susceptible of embodiment in various forms, there is shown in the drawings and will hereinafter be described presently preferred processes with the understanding that the present disclosure is to be considered an exemplification of the invention and is not intended to limit the invention to the specific processes illustrated.
Referring to FIG.
1, the present work process includes defining a plurality of work steps ws.
sub.
1i .
.
.
ws.
sub.
niv from commencement to completion of assembly of an engine.
The work steps ws.
sub.
1i .
.
.
ws.
sub.
niv are defined to establish a predetermined sequence to effect complete assembly.
Each of the work steps ws.
sub.
1i, ws.
sub.
1ii .
.
.
ws.
sub.
niii, ws.
sub.
niv has associated therewith a time period t.
sub.
1i, t.
sub.
1ii .
.
.
t.
sub.
niii, t.
sub.
niv necessary to carry out that particular work step.
It is to be understood that the present process for assembling an engine is applicable to new engines, as well as rebuilt engines.
Such engine rebuilds can be carried out using refurbished or repaired parts, or new parts, or a combination of refurbished/repaired parts and new parts.
A plurality of work stations wst.
sub.
1, wst.
sub.
2 .
.
.
wst.
sub.
n is defined or established, and the work steps ws.
sub.
1i .
.
.
wst.
sub.
n are allocated to the work stations based upon relatedness of the work steps ws.
sub.
1i .
.
.
ws.
sub.
niv, and the time period t.
sub.
1i, t.
sub.
1ii .
.
.
t.
sub.
niii, t.
sub.
niv necessary to carry out the specific work steps ws.
sub.
1i .
.
.
ws.
sub.
niv.
The aggregate time period t.
sub.
1, t.
sub.
2 .
.
.
t.
sub.
n at each work station is set about equal to the aggregate time period for each other work station, thus effecting a levelized work-time among the stations.
In this manner, the time t.
sub.
1, t.
sub.
2 .
.
.
t.
sub.
n necessary to complete the work steps at any of the plurality of work stations wst.
sub.
1, wst.
sub.
2 .
.
.
wst.
sub.
n is about equal to the time necessary to complete the work steps at any of the other work stations



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