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July 16,1946. v
_
LE ROY LAYTON
_ 2,404,304
NOSING-IN APPARATUS FOR SHELL FORGINGS
5 Sheets-Sheet. 2
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July 16, 1946~
_
LE ROY LAYTON
2,404,304.
NOSING-IN‘APPARATUS FOR SHELL FORGINGS
Filed June 4,, 1942
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July 16, 1946;
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LE ROY LAYTQN
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2,404,304
“USING-IN APPARATUS FOR SHELL FORGINGS I
Filed June 4, 1342
5 Sheets-Sheei 4
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July 16, 1946.‘
2,404,304
LE ROY 'LAYTON
NOSING-I'N APPARATUS FOR SHELL FORGINGS
Filed June 4, 1942
5 Sheets-Sheets
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‘in
'
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Patented July 16, 1946 I
2,404,304
.
UNITED STATES PATENT OFFICE‘
2,404,304
NOSING-IN APPARATUS FOR SHELL
FORGINGS
Le Roy Layton, Lansdowne, Pa., assignor to Lans
downe Steel & Iron Company, Morton, Pa., a
corporation of Pennsylvania
Application June 4, 1942, Serial No. 445,797
13 Claims. (01. 78-15)
1
ratus forming the subject matter of the present
invention will be fully disclosed hereinafter refer
ence being had to the accompanying drawings,
This invention relates to ‘apparatus for work:
ing hollow forgings, such for example as explosive
shell forgings, and particularly to what is known
in the art of ordnance manufacture, as a “nosing
in” die, i. e. a device adapted to be employed
with
a
hydraulic
or
mechanical
press
of which:
Fig. 1 is a front elevation of the apparatus,
showing two nosing-in dies alternately shiftable
for
horizontally on the base of a mechanical or hy
draulic press into axial alignment with the ver
open end of a shell forging into, a longitudinally
tically reciprocable ram of the press;
curved gradually tapering nose, having an axial
Fig. 2 is an enlarged vertical section of the
opening adapted to be threaded to receive an 10
nosing-in
die underlying the press ram, with the
impact or time fuse detonator by which the
radially reducing the normally hollow cylindrical
press ram raised, as in Fig. 1;
charge of explosive contained in the ?nished shell
'
Fig. 3 is a view similar to Fig. 2, showing the
is ?red.
.
ram
partly lowered and effecting centering of‘
In the manufacture of shell forgings, the axial
cavity extending inwardly from the open end 15 the shell in the chuck and closing of the chuck
around the shell;
of the primary forging, and which eventually con
Fig. 4 is a view similar to Figs.~2 and 3, showing
stitutes the explosive chamber of the shell, is
the ram in its fully lowered position with the open
?nished ?rst, after which the external surface‘
end of the forging nosed-inby the nosing-in die;
is turned down concentrically to the interior sur
Figs. 5, 6 and 7 are sectional plan views taken
20
face of the axial cavity, from the closed base end
on the lines 5-—5, Fig. 2, 6-6, Fig. 4, and 'I-'I,
of the shell along a substantial portion of the
Fig. 4 respectively;
'
length of the shell, before the open end of the
Fig.
8
is
a
sectional
elevation
taken
on
the
line H
forging is radially contracted to form the nose of
8-8, Fig. 6; and
‘
_
the shell.
The radial contracting of the open end of shell 25 Fig. 9 is a face view of one of the chuck jaws.
As shown in Figs. 1 and 2, the device of the
forgings has presented many recognized and well
present invention comprises a pair of units A1
know problems to the ordnance manufacturers
and A2, of identical construction, secured to a
such as off -set nosing, axial distortion, wall thick
horizontally} movable table B, which is slidably
ness irregularity, etc. resulting from the many
mounted on the ?xed base C of a conventional
different methods and apparatuses employed.
vertical forging press, for shifting of either of
One object of the present invention is to prothe units A1 or A2 into axial alignment with the
vide a nosing-in die by which axial rectilinear
vertically reciprocable ram D, and ejector E of
ity of the shell from end to end will be accu
the press.
rately maintained, and by which concentricity of
the inner and outer surfaces of the hollow forg 35 ' Primarily the device includes a frusto-conical
nosing-in die block I, which rests on the upper
ing will be retained throughout the nosing-in
face I) of the table B and is provided with a cen
operation.
.
tral depending centering boss 2 which snugly
Another object of the invention is to provide an
?ts within a counter bore b1 in the table B.
accurately centering chuck ‘for embracing and
The die block I is centrally bored to the shape
40
rigidifying the cylindrical portion of the forging
of the ?nished nose f of the shell forging, F
to prevent longitudinal distortion thereof during
(Fig. 4) as indicated at 3.
the nosing-in operation.
The frusto-conical die block I is ?tted into a
Another object of the invention is to provide
?ller
ring 4 having a tapered bore corresponding
means for accurately guiding the chuck in true
axial alignment with the nosing-in die throughout 45 to the exterior of the block I.
The ?ller ring 4 is shouldered circumferentially
relative axial movement between the chuck and
adjacent its lower end and ?tted into a base block
the die, or vice versa, during the nosing-in opera
5 which is secured, by bolts 5a, to the table B.
The ?ller ring 4 is also circumferentially
Another object of the invention is to provide a
self-centering wedge ring for centering the base 50 shouldered adjacent its upper end to receive the '
lower» end of an annular guide block 6 which also
end of the shell forging in the body of the chuck
rests on the top of the base block 5 and is secured
prior to the closing of the radially movable jaws
tion.
‘
‘
of the chuck into circumferentially embracing
contact with the forging. ,
'The, construction and operation of the appa
thereto by bolts 1.
’
‘
Slidably mounted in the annular. guide block 6
55 between the die block I and a limit ring 8 placed
2,404,304
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f.’ >- I’
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and held on top of the ‘guide block 6 by the bolts 1,
with the inner peripheral edge of the limit ring
overhanging the circular surface of the bore 9 of
the guide block 6, is a chuck body II].
The chuck body It! is provided with a straight
cylindricalbore II, in its upper end, and a down—
enters the open mouth at the upper end of the
tapering bore 3 of the die I.
the open end of the forging is forced deeper into
the tapering bore 3 of the die I and effects radial
end, for reception and operation of a series of six
segmental chuck jaws I3, I3.
Each of the jaws I3 is provided with a T shaped 10
a jaw operating ring I6.‘
I
The inner face I? of each jaw I3 is concave
and ?nished on a radius corresponding to‘ the
radius of the outside surface of the forging
The outside surface of each jaw I3 is’ convex,
with the upperpart straight and the lower part
I
As the ram D continues to move downwardly,
wardly and inwardly taperingbore I2 in its lower
head I 4 which is slidably mounted in a similar
T shaped groove I5 formed in the lowerendof .
Vii-lit.‘
4
contraction, with some axial elongation, of the
cylindrical wall 5 of the forging F, adjacent the
open end of the. forging, as shown in» Fig. 4, thus
effecting the so called “nosing-in” of the forging.
During the nosing-in operation, the annular
circumferential rib f3 is eradicated and the metal
thereof, by being forced radially inwardly, dis
places the metal of the wall f5 of the forging F
inwardly adjacent the open end thereof and
forms an inner ridge is on the inside of the hollow
, forging, whiledisplacement of the metal in the
- tapered end f4 reacts to form a substantially cy
tapered, in accordance with the straight cy‘iirn '
lindrical bore f7 in, the open end of the forging
for threading to receive the detonator which is
drical and tapered surfaces of the bores II and 20 screwed into the forging and constitutes the apex
.
or nose of the shell.
'Radial movement of the jaws I3, I3 islimited
The downward movement of the chuck ring I6
by pins I8 depending from the operating ring iii
relative to the chuck body It is at all times op
into elongated grooves I13 formed in’ the tops of
posed by a series of spring-pressed plungers~ 3Q, '
' thev T heads Ill of thejaws IS.
25 35 (Figs. 6 and 8), and the descent of the chuck
The upper portion of the operating ring I 6 vhas
body It in the guide block 5 is at all times op
a tapered bore ze'which surrounds a frusto-coni
posed by compression of springs or of elastic-?uid
cal end portion For’ the shell forging F.
trapped in a series ofcylinders 3i, ill, formed
Adapted to enter the flaring top of the annular
in the guide block 6 (Figs. 2, 3, 4 and 6).
groove formed between the tapered and conical
In each of the cylinders 3| is a plunger 32
surfaces of the ring It and forging F, is an an
which is connected to a radially extending ear
, nular wedge 2| having outer and inner inclined
33 carried by the chuck body It. The elastic
surfaces 22 and 23 adapted to engage the inclined
?uid is constantly admitted to the bottoms of
surfaces 529 and f1 of the ring It and forging F,
the cylinders 3|, through passages 34 from an
respectively, and a straight cylindrical bore 35
and'which
annular passage
is connected,
35 formed
by ain pipe
the (~35,
basetoblock
an ex
7 adapted to engage and embrace the outer straight
cylindrical surface f2 of the forging F,for cen
pansion tank, in which the elastic fluid is trapped
tering and holding the forging in the chuck. ,
,under predetermined pressure, or to‘ a compressor
‘The wedge ring '2! is carried by a disc-like
by which any desired pressure may be supplied
base 25 which is provided with a vertical annular 40 to the cylinders 3i, '3! uniformly.
'
>
f I2-of the chuck body Iii.
?ange 26 of slightly larger inside diameter than
a punch block 27 which is secured’t‘o i‘hc under
' As the ram D rises, the trapped elastic ?uid in
the cylinders 3 I, 3i reacts to raise the chuck body
in until stopped by the limit ring 8, after which
side of the rain D. The ?'ange 23 is radially‘bored
at 28 for reception of hanger studs 29 which ‘?t ‘ ' the spring-pressed plungers 3!], 3t react to raise
into the radial bores 28, loosely, and‘ support the 45 the chuck ring I 6 relative'to the-body It and
annular wedge. 24 for lateral shifting and self
thereby permit outward radial movement of the
aligning with respect to the chuck ring I6, when
chuck jaws I3, I3 to release the nosed-in shell
the ram descends frcmthe position shown in
Fig. .2 to the position shown in Fig. 3.
As the ram D moves in the manner‘just de
forging F.
50
scribed, the flaring face 23 of the wedge slides
down‘on the tapering face I1 of the forging F
'
In order to loosen the lower nosed-in end of
the forging F from the die I, if there shouldbe
any sticking of the forging in the‘ die, the ejector
E, which is common inv hydraulic or mechanical
to center the ring relative to the forging. The
presses, is operated to raise a plunger til, which
tapering face 22 of the wedge ring 2i then slides
is slidably mounted in the table B to engage the
into and seats againstv the ?aring face 223' of the 55 nose ‘end of the forgingand loosen, it in‘ the
chuck ring It, thereby centering the wedge ring
die I.
2| and the forging relative to the‘ chuck ring IS.
After the ram D is raised to its maximum ‘po
, As the ram moves downwardly and assumes the
sition shown in Fig. '1, the table "B is shifted lat—
position ofv Fig. 3, the chuck ring i'?‘moves down
erally to move the device A1 out of alignment
wardly with respect to the body Id of the chuck, 60 with the‘ ram D, for replacementof the ‘nosed-in
‘causing the outside tapering faces of the chuck
forging F with a new primary forging,.and to
jaws I3 to slide down ‘on the'inside ?aring face
bring the ‘device A2 in which a new. primary forg
I2 of thechuck body I El, thereby effecting radi
ally inward-Inovement of thechuck jaws I3, until
ing has been deposited, into vertical alignment
‘cylindrical surface f2 of the forging F.
made'with the forgings out in. the open from be
neath the ram, which makes it ‘possible to ‘use a
theinner concave faces I ‘I engage the outside 65 with the ram D, thus the replacements can be
" Further downward movement of, the ram D
shortened travel of the ram with a consequent
slides the chuck body it downwardly in the bore
9 of the guide block 3, and carries the embraced
forging F downwardly toward the die I.
‘
The outer cylindricalsurface fzrof the forging
F‘ is provided with a circumferential rib is, ad
jacent the open end of the forging and which
provides a taperingendsu'rface'j‘4 thereon, which a‘
saving in operating costs.
70
,
.
It will be understood that the slide 13 may be
eliminated and a single nosi'ngein die structure I
rigidly mounted on the base C‘ of the press, in
?xed axial alignment with the rami'D, if desired,
in which case the upwardv travel of the-ram would
be increased sufficiently tdpermit the 'forgings
2,404,304,
5
.
to be‘ readily placed in and removed from the
die;
.
.
tially embracing the oppos'te end of said forging
to align said forging with said ring and movable
axially toward said die for initially actuating said
ring, to close said jaws around said forging and
subsequently to force said forging end into said
I
It will also be understood that the nosing-in
device of the present invention is equally appli
cable for use with cold or hot forgings; and
that,1in‘ either-case, the chuck is adapted to em
brace the forging at the place where radial ex
pansion is most likely to occur as a result of axial
compression caused by radial reduction during
nosing-in of the open end of the forging.
I claim:
6
having universal free movement in a plane trans
verse to the axis of‘ said chuck for circumferen
bore.
'
6.‘ A nosing-in device, comprising a die having
10 a bore of progressively decreasing diameter, a
chuck including a ring having an open center
_
- p 1; A nosing-in device, comprising a die having
axially aligned with said bore'for receiving a hol
low forging, a series of jaws intermediate said
ring and ‘said die and movable radially to the
axis of said chuck for circumferentialy embrac
ing said forging with an open end portion thereof
seated in the larger end of said bore, and means
movable axially toward and into the open center
of said chuck ring for drawing the opposite end
of said forging into axial alignment with said
a bore of progressively decreasing diameter, a
chuck for circumferentially embracing a hollow
forging and leaving an open end projecting ax
ially for entrance into said bore, means enclosing
‘said chuck circumferentially and extending ax
ially from said die for axially aligning said chuck
with said bore, and means normally spaced axially
from said chuck to provide for insertion of a
open center of said chuck ring.
'
forging into the chuck between the chuck and
'7. A nosing-in device, comprising a die' having
said means, said means being ‘adapted to move
a bore of progressively decreasing diameter, a *
axially into contact with the chuck after inser-v
cylindrical guide axially aligned with said bore,
tion of the forging for advancing said chuck and
a cylindrical chuck body slidably mounted in
forging axially to force the extended open end of 25 said guide, a series of jaws slidably mounted for
the forging into said’ bore to effect radial con
axial and radial movement in said body, axially
traction thereof.
.
converging surfaces on said jaws engaging cor
2. A nosing-in device, comprising a die having
responding surfaces in said body, and an axially
a bore of progressively decreasing diameter, a
movable ring carried by and axially aligned with
chuck axially aligned with, ‘said bore in spaced _
said body and engageable with said jaws to‘effect
relation to said die for receiving and circumfer
axial movement of said jaws relative to said body
entially embracing a hollow forging and leaving
and radial movement thereof by said correspond
an open end thereof projecting axially beyond
ing surfaces into exterior contact with’ a hollow
saidchuck and resting in the larger end of said
forging passed through said ring into said body
bore, and means normally spaced axially from
between said jaws,
' >
V
saidchuck to provide for insertion of a forging
8. A nosing-indevice, comprising a die having
into the chuck between the chuck and said means,
a bore of progressively decreasing diameter,‘ a
I, said means being adapted to move axially into
cylindrical guide axially aligned with said bore,
contact with the chuck after insertion of the forg
cylindrical chuck body‘ slidably mounted in
ing for advancing said chuck axially to force said 1 > asaid
guide, a series of jaws slidably mounted for
projecting end of the forging into said bore and
axial and radial movement in said body, axially
effect radial contraction thereof.
converging surfaces on said jaws engaging cor
3., A nosing-in device, comprising a die having
responding
surfaces in said body, a ring carried
a bore of progressively decreasing diameter, a
by and axially aligned with said body and en
chuck embracing and maintaining a hollow forg- .
gageable with said jaws to effect axial movement
ingin axial alignment with said bore, axially
of said jaws relative to said body and radial move
movable means for advancing said chuck toward
ment thereof by said corresponding surfaces into
said die and forcing a projecting open end of the
exterior contact with a hollow forging passed
forging into said bore to effect radial contraction
through said ring into said body between said
thereof, and counter-acting means constantly
jaws, said ring having a radialy flared mouth, an
active to effect reverse movement of said chuck.
annular element for encircling one end of said
4. A nosing-in device, comprising a die having
forging, and axially converging surfaces on said
a bore of progressively decreasing diameter, a
annular element for entering said flared mouth
chuck embracing and maintaining a hollow forg
to center said forging in said chuck.
ing in axial alignment with said bore, means for
9. A nosing-in device, comprising a die having
centering the said forging in said chuck, axially
a bore of progressively decreasing diameter, a
movable means for advancing said centering
cylindrical guide axially aligned with said bore,
means and said chuck toward said die and forcing
a cylindrical chuck body slidably mounted in said
a projecting open end of the forging into said bore
guide, a series of jaws slidably mounted for axial
to effect radial contraction thereof, counter-act
and radial movement in said body, axially con
ing means constantly active to effect reverse
verging surfaces on said jaws engaging corre
movement of said chuck, and counter-acting
sponding surfaces in said body, a ring carried by
means carried by said chuck for effecting release
and axially’ aligned with said body and engage
of said chuck from the forging upon reverse
65 able with said jaws to effect axial movement of '
movement of said centering means.
said jaws relative to said body and radial move
5. A nosing-in device, comprising a die having
ment thereof by said corresponding surfaces into
a bore of progressively decreasing diameter, a
exterior contact with a hollow forging passed
chuck including a ring having an open center
through said ring into said ‘body between said
axially aligned with said bore, a series of jaws
said ring having a radially ?ared mouth,
operable by said ring and movable radially to the 70 jaws,
an annular element for encircling one‘end of ~
axis of said chuck for circumferentially embrac
said forging, axially converging surfaces on said
ing one portion of a hollow forging and leaving
annular element for entering said ?ared mouth
to center said forging in said chuck, a plunger for
moving said annular element into said ring, and
bore, and means including an annular element 75
an open end portion thereof projecting axially‘
beyond said jaws to enter the larger end of said
2,404,304
7
'8
means supporting said annular element on said
carried by said guide, and means for admitting
plunger for‘ lateral-movement ‘relative, thereto to
?uid to said cylinders to reverse the movement
permit self-centering thereof withrespectto said
ring ‘to e?ect said centering of said forging.
10. A nosing-in device, comprising axdie having
a bore of progressively decreasing diameter, a
cylindrical guide axially aligned with, said bore,
a cylindrical chuck body " slidably’ mounted, in
v said guide, a series of jaws Islidably mounted for
ofsaid
chuck.
.
"
'
'
~
1 ‘ 12. A nosing-in’ device, comprisinga die having
a bore of progressively decreasing diameter,‘ a
cylindrical guide axially aligned with said bore, a
cylindrical chuck body slidably mounted'in-said
guide, aseries of jaws slidably mounted for axial
and radial movement in said body, axially cone
axial andradial movement in said body, axially 10 verging
surfaces on said jaws engaging corre
converging ‘surfaces on said: jaws‘ engaging cor
spondingrsurfaces in said body, a ring carriedi'by'
' responding surfaces infsaid body,-.a ring carried’ by
and axially aligned with said bodyiand ‘engage
and axially aligned with said body and engage
able withzsaid- jawsto eifect axial: movement of
ablewithl said jawsto effect axial movement of
said. jaws relative to ‘said body and radial move,
said jaws ‘relative .to said body and radial move
ment thereof by said corresp ending; surfacesi into
ment' thereof by said corresponding surfaces into
exterior contact with; a: zhollo-w' forging passed
exterior contact’ with a. hollow forging passed
through. said ring. intolsaid fbody‘ between said
throughsaid ring’ into said body between said
jaws, a plungertfor effecting :axial movement of
jaws, said ring having a radially ?ared mouth, 7
said: ring and subsequent .axialt movement‘ of said
an annularelement for encircling one end of '
said forging, axially converging surfaces on said ‘
annular element for entering said ?ared mouth
to centersaid, forging in said chuck, and a plunger ,
for; re?ecting said axial movement of said ring
andrsubsequent axial movement of said chuck to
force-ran open axially projecting end of said forg
inginto said bore
,
11.1. A nosing-in device, comprising a die having
a bore of, progressively decreasing diameter, a
cylindrical guide axially aligned with said bore, a 30
' cylindrical ‘chuck body slidably mounted in said
> '
guide, a series of jaws slidably mounted for axial
and, radial movement in said body, .axially'con
verging surfaces on said: jaws engaging corre
sponding. surfaces 'in' said body, a ring carried by :
and axially aligned with saidybody andYengage
chuck toiforce ancopeni axially projectingendpf '
said ‘forging. into, said bore, ‘ aiseries‘ of: plungers
carried by said 'body' and ' operating respectively
in .a' series oficylinders carried- by said guide, and
means. for admittingr?uid to said cylinders-to
Kreverserthe:movementof
» 513. A nosing-in device, comprising
said vchuck.a die»' having
>
a bore of progressively decreasing diameter, a
cylindrical guide axially aligned with said bore,
a cylindrical chuck body slidably mounted in said
guidaa series of jaws slidably‘mountedifor-axial
and radial movement in said" body, axially con
verging surfaces on said jaws engaging corre
sponding surfaces in said body, a ring'carried ‘by
and axially aligned with said’ body and-engage‘
ablew with said jaws to velfect axial movement-of
said‘ jaws relative to said body-and radial move
ment thereof by said corresponding surfaces into
able with said jaws to e?‘ect axial movement of
saidjaws relative to-said body and radial move
exterior contact with a .hollow forging passed
ment thereof by said corresponding surfaces into
exterior contact with a hollow forging passed 40 through said ring into- said body between said
‘jaws, a plunger ‘forleifecting axial movement? of
7 through said ring into said body between said
said ring and subsequent axial’ movement of said
jaws, said ring having a radially ?ared mouth,
,chuck to force an open axially projectingend of
, anannular element for encircling one end of said
said forging into said ‘bore, a series of plungers
forging, axially converging surfaces on said an
carried bysaid-body and operating respectively‘
nular element for enterin'gzsaid ?ared mouth to
in a series.v of cylinders carried by said guide,
center said forging in'said chuck, a plunger for
means for admitting fluid to said “cylinders, to
effecting said axialmovement .of said ring and
reverse the movement of said chuck, and a'series
.subsequentaxial movement of, saidichuck to force , :of
spring press plungersrcarried ‘by said chuck
an .opentraxially projecting end of said forging into
.bodyand
engaging said ring to reverse‘ the move,
said bore, aseries of plungers carried by said body
ment. ofsaid ring to release said jaws. '
rP
and operatingrespectively in a series ofcylinders
'
,
'
.
~
LE ROY LAYTON.‘
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