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Патент USA US2135040

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Nov. 1, 1938,
2,135,040
J. a. MORGAN ET AL
TURBINE BLADE TENON SPINNING MACHINE
Filed Dec. 16, 1956
2 Shee’ts-Sheet 1
INVENTORS
JOHN G. Monmm am‘
JOSEEY'PH C‘ BoHn/v.
ATTORNEY
o» ., 0a
NOV- 1, 1938-
J. G. MORGAN ‘ET AL '
2,135,040
TURBINE BLADE TENON SPINNING MACHINE
Filed Dec. 16, 1956
_
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Patented Nov. 1, 1938 '
2,135,040?
UNITED STATES PATENT.’ OFFICE
TURBINE BLADE TENON SPINNING MACHINE ’ 7
John G. Morgan, Collingdale, and Joseph C.>Bo
han, Prospect Park, ~Pa., assignors to Westing
house'Electric & Manufacturing Company,,East .
Pittsburgh, Pa., a corporation of ‘Pennsylvania
Application December 16, 1936,- SerialvNo. 116,106
7 Claims.
(01. 78-53) '
Our invention relates to turbine blade manu
Fig. 5 is a fragmentary plan View showing the
type of assembly and support shown in Fig. 4;
chine for spinning tenons of blades over the.
Fig. 6 is a'plan View showing the-table and the
shroud element of a turbine blade assembly.
type of working support shown in Fig. 1;
_ facture and it has for an object to provide a ma
A further object of our invention is to provide
a machine for spinning tenons of blades over a
Fig. 7 is a detail View showing how the table
and the support. may receive ‘axfurther type of
shroud strip of a blade assembly, the machine in
corporating a support for the assembly and a
turbine blade assembly; and
spinning tool wherein the tool and the assembly
principles of the spinning operation.
10 may be adjusted to effect spinning alinement of
the working end of the tool and a tenon and
wherein the spinning tool may be fed toward and
away from a tenon. .
"
Figs. 8 andf9 are detail views illustrating the
.
.
In the manufacture of elastic ?uid turbines, it 10
is common practice to have turbine blade tenons
extending through openings in shroud strips or
elements, the tenons being headed over to ?rmly
A further object of our invention is to provide, connect the shroud strips or elements to the
15 a machine for spinning the blade tenons over the
shroud element of a turbine blade a‘ssembly
wherein the spinning tool may be adjusted so
that its axis extends normal with respect to the
shroud element and wherein the spinning tool
20 may be fed toward and awayfrom a tenon.
A further object of our invention is to provide
a machine for spinning blade tenons over the
shroud elements of a turbine blade assembly.
wherein the spinning tool-isfed toward'and away
from a tenon and wherein an assembly is clamped
in place with respect to its support in response to
feeding motion of the spinning tool. H
A further object of our inventionis to provide
a machine for spinning blade tenons overv a
30 shroud element of a turbine blade assembly
wherein the support for a blade assembly is con
structed and arranged to provide for adjustment
blades.‘ Heretofore, various ways have been used 15
to e?ect the step of fastening or heading. For
example, the tenons may be hammered or rolled
down, as in riveting, and then again the fasten
ing may be effected by fusion. . In accordance
with‘ the present invention, we provide a spinning 20
machine having a well-known type of head spin
ning tool, the machine incorporating arrange
ments for disposing the, spinning tool in spinning.
alinement with respect to a tenon and for feeding
the‘ spinning tool to effect the spinning and head 25
ing operation. The spinning tool is carried by a
support, which, not only provides for the feeding,
motion‘, but may be adjusted both vertically and
angularly to ‘suit the requirements of a blade
assembly, itv being desirable that the spinning 30.
operation shall be effected with the axis of the
spinning tool disposed normally with respect to
the shroud element. ‘Aside from these features
of adjustment of the spinning tool, the machine
35
A further object of our invention is to provide» incorporates a clamp for holding a'blade assembly
a machine for spinning blade tenons over. a in place during the spinning operation. In order 35
shroud element of turbine blade assembly where- to adaptthe machine for di?erent types of blade
in the assembly is carried by a support m'ounted assemblies, the assembly support is carried by a
on a table andwherein the table ‘is constructed table, which provides, not only foradjustmentof
and arranged to facilitate the removal and as
the support toward and away from the spinning
sembly of a support with respect thereto.
tool to suit'the. radial‘ dimensions of blade assem
These and other objects are effected by our blies, but it is constructed and arranged to pro
invention as will be apparent from the following vide for the assembly and removal’ of blade
4 description and claims taken in connection with assembly supports, whereby a support suitable for >
the accompanying drawings, forming a part of' one type of bladepassembly may be removed'and 45
thereof suitably to the dimensions. of an, as
sembly.
'
this application, in which:
I
Fig. 1 is a side elevational view of my improved
heading machine; _
50
'
.
‘
Fig. 2 is a detail sectional ‘view taken alongthe
line II-H of Fig. 1;
v
'
Fig. 3 is a sectional view. taken
III—III of Fig. 2;
‘I
_
’
along the line
Fig. 4 is a view similar toYFig. 1 but showing a
55, different type of turbine blade assembly support;
another inserted.
.
'
" "
»
Referring now to the drawings morelin detail,
there is shown a frame comprising vertical ped
estals l0 and II carrying a table l2. A rotary
spinning tool [3 is carried by the pedestal H], the 50
spinning tool being manipulated, as hereinafter
described, to spin over tenons M of blades l5
extending through openings l6 of shroud ele-'
ments II of turbine blade assemblies. . '
,
The rotary spinning tool I3 is connected to an
2,135,040
2 .
arbor l3a driven by a motor IS, the motor, arbor
and tool being mounted on a support, at l9,
carried by the upper end of the post 20 guided
for vertical adjustment by the pedestal Ill.
The spinning tool l3 may be adjusted verti
A
cally by raising and lowering thegpost 20 to a
desired extent, this operation being effected by
any suitable means, for example, the post is shown
as being raised and lowered'by ‘rack and pinion
ll) mechanism 2| operated by means of a hand
wheel 22.
Assuming suitable vertical adjustment of the
spinning tool with respect to a blade assembly,v
then the tool may be angularly' adjusted to place
15 the spinning axis of the tool substantially at right
angles to the outer surfacelof .the shroud strip
I‘! so as to assure substantially symmetrical or
uniform heads without the spinningtool gouging
into the shroud or producing a head which is
20 eccentric or which does not engage the shroud
uniformly. To this end; the vertically adjustable
post 20 has fastened to its upper end a yoke 23
having side plates 24,‘ the tool support, at l9,
having pivots or trunnions 25; extending through
25 journal openings 26 formed in the side plates.
The side plates also have slot or slots 21 arranged
concentrically with respect to the openings 26
and having locking bolts or screws 28 extending
therethrough, the locking bolts or screws being
,
I
30 carried by the support, at H].
If it is desired to arrange the axis of the spin
ning tool l3 so as to be normal with respect to
the surface of the shroud strip element [1, then
the locking bolts or screws 28 are loosened and
P’ the support, at I9, is moved'angularly about the
cludes. a pair of blocks 4| having opposed V
notches 42 engaging the spindle element 43 for
the disc, the blocks being drawn together by any
suitable means, for example, the screws 44, to
fit the element 43.
.
The block assembly is connected to the table
l2‘ so as to provide for adjustment thereof to
ward and away from the spinning tool, in any
suitable manner. ‘For example, the table l2 in
cludes parts 45 and 46 which complementally pro
vby and fastened tothe block assembly in any
suitable manner, as by grooves 49 formed in the
assembly and receiving the edges and by the
device 50 for locking the assembly in position 15
along the slot tosuit the dimensions of a blade
disc and the lengths of the blades carried there
- by.
Where the blade assembly is comprised by a
spindle with a plurality of blade discs thereon, as
is the case with the assembly C in Fig. '7, then
the blocks 4|‘ have to be located about the spin
dle between adjacent discs; and, to provide for
removal of the blocks 4| from the guide slot 41,
the assembly of such blocks between adjacent 25
discs and the re-assembly of the blocks encom
passing the spindle between'discs in the guide
slot, thetable part 46 is'movable away from the
part 45 to provide for removal and assembly of
the'block assembly in the slot. The table parts 30
are’ located in proper relative longitudinal posi
tion by means of pins'52 and 53 carried by the
pedestals l0 and. II and Which?t complemen~
tary portions of circular openings 52a and 53a,
formed in the table parts '45 and 46. The table 35
axis of the pivots 25; and, when the desired po
parts are. fastened to the pedestals by means'of
sition is reached, the locking devices are tightened
screws 54.
to clamp the support in adjusted position.
To provide for feeding of the spinning'tool to
40 ward and away from a tenon, ‘the support, at I9,
is preferably formed in two‘ parts, namely, the
housing 30 and the guide or cradle 3|, the housing
30» having ‘a slide portion 32, preferably of T
cross-section, ?tting a guide groove or passage
45 33 formed in the guide or cradle 3 I, the guide por
tion 32 and the guide passage being arranged
r‘
v
‘
Assuming that the blade assembly support of
Figs. 1 and 6 is to be removed so that an assembly,
such as shown in Fig. '1, may be inserted, the
table part 46 is removed,- whereupon the blocks
4| may be released from the guide slot 41 and
arranged in encompassing relation with respect to
the spindle betweendesired blade discs, as shown
in Fig. 7, and, thereafter, the blocks encompassing
the spindle may be reassembled with respect to
parallel to the axis of the spinning tool so that,
the guide slot 41, the tablepart 46 being again
by movement of the housing 30 along theguide,
fastened to the pedestals.‘
the tool may be adjusted in the direction of its
'In Figs. 4_ and 5, there is shown a support or
?xture for a blade assembly of the sector type.
In these views, the support such as shown in
50 axis toward and away from a tenon.
Feed motion may be imparted to'ithe housing
30 by any suitable means. For example, the
guide portion 32 is shown provided with a rack'
10
vide a slot 41 whose opposed edges 48 are engaged ‘
'
Figs' 1 and 6, is replaced by a supporting plate
56 and adjustable along the table I 2 and clamped
34 meshing with a pinion 35, carried by the guide
in position with respect to the, groove 4 41 by
55 or cradle 3| and operatively connected torthe
means of ‘the bolts ‘51, and the clar'n‘pbar 58. The
arcuate holder 38 for the blades I5 is engaged at
the back by a ‘pair of spaced abutments 60 on
lever 36. If the lever 36 is moved in one direc-v
tion, the spinning tool‘ I3 is advanced toward a
tenon l4 and vice versa.
~
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_
_'
The machine is'arranged for spinning blade
60
the plate 56. "Alsofrnidway between the abut
ments 60, there is a third abutment 6 I, the latter
tenons over shroud strips of blade‘ assemblies‘ of being adjustable along the slot‘Gld to suit the
different types. In Fig. 1 the blade assembly A_ curvature of ‘the 'bladaholdin‘g member; The
60
is shown as comprised by a disc 31 carrying blades - axis of the abutment pin 6| ‘is arranged substan
15 having tenons l4 extending through'the open
ings provided in the shroud I1. In Figs. 4 and 5,
65 the blade assembly B is comprised by a segmental
blade holding member 38 of segmental or arcuate
form, this‘ type'being particularly suitable for
stationary or stator b-lading. ‘In Fig. '7,’there is
shown ablade assembly C ‘comprised by ‘a spindle
tially in the vertical plane of-the spinning tool’
axis so that such pin is'in line with the spinning
thrust.
-
e,
'
As shown in Figs. 1 and 4, the machine carries
a clamp 63 which serves to hold aiblade assembly
?rmly in place with respect toits support dur-/
ing the spinning operation, the clamp prefer
types of blade assemblies maybe supported by
the table ‘l2, special supports are provided.
ably being rendered effective by inward- feed 101
motion of the spinning tool toward a tenon. Ac
cordingly, for example, the clamp, 63 is carried.
by one end of the» lever 64 supported at an in
In Figs. 1 and 6 where the assembly A in
cludes a blade disc, the assembly support in
of the lever having ‘an inclined or cam surface
70 39 having a plurality of spaced'blade discs 46
carried thereby. In order that these different
termediate point by a fulcrum 65, theother end
2,135,040‘
56 engaged by a roller GT-on the 'housinglis‘?pthe
arrangement being such‘ that, prior to engage-'4
ment with the spinning tool l3 with a tenon Ill
during feeding motion of the housing 30, the
heads provided by spinning shall be symmetrical
or engage the shroud strip "in a uniform manner
throughout their peripheral extent. As before,
if, due to variations-in dimensions, it should be
necessary to effect vertical adjustment of the post
20, then- this may be readily eifected by operation
of the handwheel 22. To provide for feeding
and backing motion of the spinning tool, the
roller 6'! will have acted‘ on the cam surface 676"
to engage the clamp v63 with the blade holding
member of a blade assembly so as to hold. the
latter ?rmly in position with respect to- its sup-j
port during the spinning operation. Upon re_-1'
10
traction of the housing 39, the clamp'is released
support, at I 9, is shown made'in two parts, a 10
thereby freeingv the blade - holding member " so
housing parti3lll' and a guide 3|, the housing part,
that the latter may be adjusted to bring another
tenon into the vertical planev of the spinningv tool
as well as the spinning tool carried thereby, be
ing moved along the guide by means of the rack
axis. vTo facilitate adjustment of the apparatus
and pinion mechanism actuated by the hand
15 suitably to diiferent blade assemblies”, the ful
lever carried‘ bythe guide 3|.
crum 65 is carried by a post 68 held‘ in vertically
adjusted position by a screw 69'and the-‘lever
has a plurality of fulcrum pin openings 10‘. ‘Fur
thermore, the clamp 63 is carried by a stem ‘H
‘
>
Apparatus made in accordance with our inven-‘
tion is operated as follows: If the tenons of blades ~
of a blade disc are tobe headed, the support ar
25 rangement shown inFigs. ‘1 and 6 is ‘used. On‘
the other hand, if the blade holding member is
in the form of a sector carrying stationary blades,
then the support shown in Figs. 4 and 5 is sub
stituted for the?rst form of support,‘the table
30 l2 being constructed and arranged to receive
either type of support and either type of sup- _
port being adjustable along the guide slot 41 of
the table to suit the dimensional ‘requirements
of the blade holding member. and the blades. As
35 suming that a blade assembly is mounted on its
support and that the latter is adjusted to proper
position along the table, then it is necessary to
adjust the blade holding member to bring the
tenons, one at a time, into the vertical plane
40 of the spinning tool axis. Assuming ‘a tenon to
be properly positioned for ‘the spinning operation,
then it is necessary to make such adjustments
of the post 29 and thejspinning tool support, at
I9, as tov bring the axis of the spinning tool into
45 proper relation or spinning alinement with re-'
spect to a tenon. If the shroud strip is arranged
at right angles to the tenons, the spinning tool.
axis is lined with a tenon axis to effect spinning
alinement. With the work support and the
50 spinning tool support relatively adjusted in this
way, ‘the blade assembly is adjusted angularly
to bring a tenon to be headed into spinning aline
If necessary, the 15
clamp mechanism may be adjusted to suit differ-‘
ent assemblies, the clamp may be adjusted with
respect to the lever, the fulcrum may be raised.
and lowere‘cLand the lever may be adjusted
lengthwise with respect to the fulcrum pin.
20
20. threaded to the lever to secure adjustment of the
clamp with respect to the latter.
3.
ment being ‘necessary in order that ‘the, tenon
"While'vv'e have shown our invention in two
forms, it'willbe obvious to those skilled in‘ the
art that it"i's not so limited, but is susceptible
of ‘various other changes and modi?cations with;
out departing from the spirit thereof, and we de
sire, therefore, that only such limitations shall
be placed thereupon as are imposed by the prior '
art or as are speci?cally set forth in the appended
claims.
3 “
What we claim is:
r -
'
‘
‘
30
1; vIn a machine for headingiblade tenons over
a shroud strip of a turbine blade assembly, a
frame‘ including a table, a rotary spinning tool
carried by the frame, said table including a pair
7 of parts which complementally provide a slot ex
tending toward the tool, a turbine blade assem
bly support carried by the table and adjustable
along the slot suitablyto the dimensions of a
blade assembly, means for holding the assembly
support in adjusted position along the slot,’means 40
providing for movement of one of said table parts
away from the other sufficiently to, open the slot
to‘ facilitate'assembly and removal of an assem
bly support with respect to the table, means pro
viding for relative adjustment of the working end
o'f'the spinningtool, and a blade tenon to effect
spinning alinement thereof, means carried by the
tool support for feeding the spinning tool axially
toward a tenon. and for retracting it from the
latter, and means responsive to feeding move
ment of the tool for clamping a blade assembly in
place with respect to its support during each spin-'
50'
ment with the spinning tool, whereupon the latter ning operation.‘
~
is fed inwardly to effect the spinning operation,
55 the clamping device being rendered effective to. 7 2. In a machine for heading blade tenons over
hold the blade assembly. Upon aytenon being a shroud strip of a turbine blade assembly, a 55
headed over, the spinning tool and its support frame including a table, a. rotary spinning tool, a
are retracted, the clamp being released during support for the spinning tool and carried by the’
frame, said table including a pair of parts which
the back stroke. Next, the blade assembly is in
complementally provide a slot extending toward
60 dexed or adjusted to’bring the next tenon into
the
spinning tool, a turbine blade assembly sup-' 60
spinning alinement and the operations just re- .
ferred to are repeated and so on. Where the port carried by the table and adjustable along the
slot suitably to the dimensions of a blade assem
shroud strip I1 is arranged diagonally with re
spect to a tenon instead of at right angles, then bly, means for holding the assembly support in
65 angular adjustment of the tool support, at I9,
adjusted position, means providing for movement
is necessary to produce spinning alinement of of one of said table parts away from the other 65
the tool and a tenon, the‘support being adjusted 'suf?ciently'to open the slot to facilitate the as
to cause the tool axis to intersect the axis of a
tenon with such axis arranged substantially nor
70 .mal with respect to the shroud strip surface.
Accordingly, in Fig. 4, the support, at I9, is
sembly and removal of a blade assembly support
with respect to the table, means providing for
vertical adjustment of the tool support with re
spect to the frame and for angular adjustment 70
adjusted angularly about the pivots 25 and looked a thereof in the plane of the tool axis, means car
in position by means of the locking bolts 21 to
hold the spinning tool in proper angular position
76 with respect to the shroud strip, this adjust
ried by the tool support for feeding the tool to
ward a tenon and away from the latter, and
means responsive to feeding of the tool toward a 75
43
2385,0405
tenon for clamping. a blade assembly in'place with
respect to its support.
3. In a machine for heading blade tenons over
a‘ shroud strip of a turbine blade assembly, a
frame, a rotary spinning ‘tool, a support embody
ing guide and slide partsand the tool being car
ried‘ by the slide part, a horizontally disposed
turbine blade assembly support carried by the
frame‘, a vertical post, a horizontal pivot between
150,’ the upper end of the post and vsaid guide part,
means for holding the guide part in desired
positions of angular adjustment with respect to
the post, means for supporting the post from
the‘ frame and providing for vertical adjustment
’ thereof and for holding it in- vertically adjusted
position, and means including a pinion carried by
the guide part and meshing with a rack on the
slide part for feeding the spinning tool toward a
tenon and for retracting it from the latter.
4. In- a machine for heading blade tenons over
a shroud strip of a turbine blade assembly, a
frame, a rotary spinning tool, a support for the
tool carried by the frame, means for adjusting
the tool support 'angularly in‘ the vertical plane
- of the tool axis and for holding it in adjusted
a‘ gripping device for holding, the blade assembly
in‘ placev with respect to its support, said gripping
device including a jaw and means carried by one
end of the lever for adjusting the jaw toward and
from the latter, cam mechanism cooperating with‘
the. other end‘ of the lever for rocking the latter
about its fulcrum to cause said- jaw to grip the
blade assembly in place with respect to the sup
port of the latter, said cam mechanism including
an actuating element carried by said slide, and
means providing for vertical adjustment of the
fulcrum.
6. In a machine for heading blade tenons over
a shroud strip of a turbine blade assembly, a
frame, a rotary spinning tool, a support embody
ing guide and slide parts and the tool being car
ried by the slide part, a pivotal connection be
tween'the frame and said guide part and pro
viding for adjustment of the latter in a plane
transverse of the turbine blade assembly support 20v
and the blade assembly carried thereby, means
for holding the guide part in desired positions of
angular adjustment about said pivotal connec
tion, and feed mechanism for imparting feed
motion to the slide part tolfeed the spinning tool
toward a tenon and for retracting it from the
position, a turbine blade assembly support car
ried by the frame and having an upper horizontal
latter and including an operating element carried
supporting surface, means carried by the spin
ning tool support for feeding the spinning tool
'7. In a machine for heading blade tenons over
a shroud strip of a, turbine blade assembly, a
frame, a support embodying guide and slide parts, a
3 toward a tenon and away from’ the latter, alever,
a fulcrum for the lever and carried by the frame,
a gripping member connected to one end of the
by said‘ guide part.
a turbine blade assembly" support carried by the
frame, an arbor carried, by said- slide part and
extending toward the turbine .blade assembly sup
port, a spinning tool carried at the end of the
-. assembly support, and cam means cooperating
arbor adjacent to the turbine blade assembly
with the other end of the lever and responsive to ' support, a motor for driving the arbor and car
feeding motion of the tool to tilt the lever to cause ried by said slide part, a pivotal connection be
the gripping member to clamp a blade assembly tween the frame and said guide part and pro
in place with respect to horizontal supporting viding for adjustment of the latter in a plane
40
-; surfaces.
transverse to the turbine blade assembly support
5. In a machine for heading blade tenons over and the blade assembly carried thereby, means for
a shroud strip of a turbine‘ blade assembly, a holding the guide part in desired positions of an
frame, a rotary spinning tool, a tool support car
gular adjustment about said pivotal connection,
ried by the frame and including a slide part car- and feed mechanism for imparting feed motion
, rying the tool, a horizontally disposed turbine
to the slide part to feed the spinning tool toward
blade assembly support‘ carried by theframe, a tenon and for retracting it from the latter and
means providing for vertical adjustment of the including an operating element carried .by said
tool support and for angular adjustment thereof
guide part.
'
'
‘
in the vertical plane of the tool axis, means for
,
JOHN G. MORGAN. l
feeding the slide part and the tool toward a tenon
JOSEPH C. BOHAN.
lever for holding a blade assemblyin place with
respect to said horizontal surface of the blade
and for retracting it from the latter, a lever, a
fulcrum for the lever and carried by the frame,
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