close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2086051

код для вставки
July 6, 1937,
i
'
w. L, scRlBNER
2,086,051
APPARATUS FOR COLD ROLLING AXLE JOURNALS -\
Filed June 5, 1936
.\\\\\\\\\\\\\\\\
I
Patented Juiy 6, 1937
' attentif
UNITEp sTAr‘Es ArtNr ortica
2,086,051
APPARATUS FOR COLD ROLLING AXL
JOURNALS
.
` William L. Scribner, Canton, Ohio, assignorto
The Timken Roller Bearing Company, Canton,
Ohio, a corporation of Ohio
Application June.5, 1936, Serial N0. 83,601
7 A Claims.
(Cl. 80-22) »
The service conditions that affect locomotive
and railway car axles are such that the journal
membersrare screwthreaded and provided with
portions thereof are liable to fail through fa
nuts II that bear against the end plates 6„ 'I
tigue; and it has been found that the capacity
5 of the axle for reducing fatigue can be greatly
tions thereof.
The endmost portions `of the tie '
and serve to adjust and hold them in position.
In the middle portion of the second end plate ‘I
5
increased by suitably cold rolling the journals
is a boss I2 through which is a horizontal bore, "
thereof. 'I‘he principal object of the present in
vention is to devise an apparatus for cold rolling
such journals and particularly to devise means
and a pressure pin I3 fits slidably in the bore.
On the outer face of the adjacent roller crosse
head is a boss Iâ against which the pressure pin
abuts.
~10
l0 for insuring the proper pressure of the rollers on
the journals and to make the device capable of
rolling journals of Various diameters. The in
vention consists in the parts and in the combina
tions and arrangements of parts hereinafter de
15 scribed and claimed.
In the accompanying drawing wherein like
At a distance below said pressurevpin, the end
for a lever I6 that extends upwardly past the
pressure pin and has a horizontal hole through ¿7.,
its upper end.
Extendingïfreelyk through this
reference numerals refer to like parts wherever
they occur,
hole is a tie rod I'I with a bolt head abutting
against the end of the lever. This tie rod ex
Fig. l is a side elevation of an axle journal
tends through and beyond the top endof the
shank end plate 6 and its projecting portion is
vsurrounded by aV helical spring I8 that bears
20 rolling device embodying my invention;
Fig. 2 is an end elevation of said device;
Fig. 3 is a cross-section on the line 3*-3 in Fig.
1;
Fig. 4 is a cross-section on the line ¿l-II in
25 F-ig- l;
Fig. 5 is a detail section on the line 5-5 in
Fig. 3;
Fig. 6 is a View showing two distance pieces
of different length; and
Fig. 7 is a view showing two pressure pins of
-different length.
My device comprises two pairs of rollers l,
each pair being rotatably mounted in separate
hollow blocks or crossheads 2, which crossheads
35 are disposed vertically and are spaced apart hori
zontally. The periphery of each roller is curved
i convexly longitudinally; and each roller is mount
ed on a horizontal pivot pin 3 that is mounted
in bosses 4 provided therefor in the sides of
40 the crosshead. Each crosshead has a horizontal
bore extending through the corner portion there
ci', the bores of one crosshead being alined
with those of the other. Rods 5, which serve both
as ties and guides, extend through the alined
45 bores of the respective crossheads and have a
sliding iit therewith.
These rods extend through openings provided
therefor in end plates 6, l. One of these end
plates, 6, has a shank 8, preferably integral
50 therewith, which shank is of `suitable size and
shape to ñt in the tool post of an engine lathe.
Between this end plate 5 and the adjacent cross
head, U-shaped saddles or distance pieces 9
straddle the rods 5 and are clamped thereon
55 by bolts I0 which extend through the end por
'
plate l is provided withV spaced lugs I5 with
alined bores in which is mounted the pivot pin
at one end against said plate and at the other end
against a nut I9 that works on the screwthreaded
end of said tie rod. Interposed between the
shank end plate 6 and the lever end plate 'l op
25
posite the end of the lever is a spacing member
2t with end flanges in alinement with holes in
the mounting members. Through these holes
extend bolts 2| whose ends are threaded to receive
nuts 22.
y
30
In practice, the device hereinbefore described
is mounted on the lathe with its shank slid
able in the tool post thereof. The spring I8 is
slackened and the pairs of rollers I spread far
enough apart to permit the axle, which is to be A
rolled, to be entered between the two sets of roll
ers and centered on the head and tail stocks of
the lathe. The lathe is set in motion to rotate
the axle and to feed the rolling device longi
tudinally.V After the lathe has started, the nut I9
is turned to gradually compress the spring, I8,
whose reaction causes the tie rod I 'i to pull on
the end of the lever I6, which bears against the
pressure pin I5, which in turn bears against the
adjacent crosshead l. The crosshead 'I is thus
moved to bring its rollers into contact with the
journal of the axle. At the same time, the pres
sure of the spring I8 against the shank end plate
6 causes the device to move bodily until the roll
ers on the crosshead next to the shank end plate
bear against said journal, the bodily movement
of the device being permitted by the shank ñt
ting slidably in the tool post of the lathe. Thus
both pairs of rollers contact with the journal with
a pressure that is determined by the adjustment
2
2,086,051
of the nut I9. As stated above, the pressure
begins after the lathe has started and is in
creased gradually to the desired intensity and is
held at that intensity until the feed of the lathe
carries the rollers fairly near to the end of the
surface to be rolled and is then gradually re
duced to zero or thereabouts.
ed on each crosshead, a lever pivoted on one end
plate, and means for operatively connecting said
lever to one of said crossheads to apply pressure
thereto, and the other end plate having a shank
adapted to rit slidably in the tool post of a lathe.
4. An apparatus for cold rolling axle journals
and the like comprising rods, two crossheads slid
ably mounted on said rods, end plates on said
rods, nuts threaded on said rods for `positioning
said end plates, a pair of rollers rotatably mount 10
It is noted that the pressure of the spring I8
is multiplied by reason of the fact that the end
of the lever7 Where» the force of the spring is ap
plied, is much further from its pivot than is the ed on each crosshead, a lever pivoted on one end
pressure pin on which the lever acts. It is also
plate, and a pressure pin slidably mounted on
noted that, by reason of the device being slidably Y said end plate with its ends in contact with said
mounted on the tool post and the crossheads be
lever and the adjacent crosshead respectively,
the other end plate having a shank adapted to
15 ing slidable on their guide rods, the pressure of
the rollers is automatically equalized.
ñt slidably in the tool post of a lathe.
lt is a particular advantage of the apparatus
5. An apparatus for cold rolling axle journals
hereinbefore described that it is adaptable for and the like comprising rods, two crossheads slid
use with axles or shafts of widely diñerent diam
ably mounted on said rods, end plates on said
20 eters. Thus, the pressure pin may be readily
rods, nuts threaded on said rods for positioning
replaced with a similar pressure pin of greater said end plates, a pair of rollers rotatably mount
or less length, thereby permitting the crosshead ed on each crosshead, a lever pivoted on one end
to shift accordingly. In like manner, the saddles plate, a pressure pin slidably mounted on said
or distance pieces 9 may be readily replaced with end plate with its ends in contact with said lever
25 similar saddles or spacing members of greater or
and the adjacent crosshead respectively, and
shorter length to decrease or increase the spac
spacing members removably interposed between
ing apart of the pairs of rollers, as may be re
the other end plate and the other crosshead, the
quired.
last named end plate having a shank adapted to
While the apparatus hereinbefore described ñt slidably in the tool post of a lathe.
30 is especially suitable for cold rolling railway car
G. An apparatus for cold rolling axle journals
and locomotive axles, it is obviously applicable
the like comprising rods, two crossheads
for cold rolling other axles and shafts.
What I claim is:
l. An apparatus adapted to be mounted on
35 the tool post of a lathe for cold rolling axle jour
nals and the like comprising rods, two crossheads
slidably mounted on said rods, end plates on said
rods, nuts threaded on said rods for positioning
said end plates, a pair of rollers rotatably mount
slidably mounted on said rods, a pair of rollers
ed on each crosshead, a lever pivoted on one end
plate, and means for operatively connecting it to
one of said crossheads to apply pressure thereto,
said apparatus having a shank adapted to be
mounted in the tool post of a lathe and the roll
ers being equidistant from a common axis.
2. An apparatus adapted to be mounted on the
tool post of a lathe for cold rolling axle jour
nals and the like comprising rods, two cross
heads slidably mounted on said rods, end plates
50 on said rods, nuts threaded on said rods for
rotatably mount-ed on each crosshead, end plates
on said rods of which plates one has a shank 35
adapted to ñt slidably in the tool post of a lathe
and the other has a lever pivoted thereon, nuts
threaded on the ends of said rods for positioning
said end ' plates. spacing members removably
mounted on said rods between the shank end
plate and the adjacent crosshead, a pressure pin
slidably mounted in the lever end plate between
the lever and the adjacent crosshead, a spacing
member between the two end plates opposite the
end of said lever, and a tie rod connected to the
end of said lever and extending beyond the dis
tant end plate, a nut threaded on the end of said
rod, and a helical spring between said nut and
said end plate.
’7. An apparatus adapted to be mounted on the
tool post of a lathe for cold rolling axle journals
positioning said end plates, a pair of rollers ro
tatably mounted on each crosshead, a lever piv
and the like comprising rods, two crossheads slid
ably mounted on said rods, end plates on said
oted on one end plate, and means for operatively
rods, nuts threaded on said rods for positioning
said end plates, a pair of rollers rotatably mount
connecting it to one of said crossheads to apply
55 pressure thereto, said apparatus having a shank
adapted to be mounted in the tool post of a lathe
and the rollers being equidistant from a common
axis.
3. An apparatus for cold rolling axle journals
60 and the like comprising rods, two crossheads
slidably mounted on said rods, end plates on said
rods, nuts threaded on said rods for positioning
said end plates, a pair of rollers rotatably mount
ed on each crosshead, a lever pivoted on one end `
-plate, means for operatively connecting said lever
to one of said crossheads to transmit pressure
thereto, and means comprising a spring for ap
plying pressure to said lever, said apparatus hav
ing a sha-nk adapted to be mounted in the tool
post of a lathe and the rollers being equidistant
from a common axis.
`
WILLIAM L. SCRIBNER.
Документ
Категория
Без категории
Просмотров
0
Размер файла
376 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа