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Патент USA US2133444

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Oct. 18, 1938.
n
R, w. GLASNER ET AL
_
. 2,133,444
PRESS
Filed Sept. 16, 1937
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6 Sheets-Sheet 2
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Oct. 18, 1938.
~ R. w. GLASN'ER ET Al. '
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` 2,133,444
PRESS
Filed sept, 16, 1957
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oct. 18, 1938.
. R. w. GLASNER E'r AL.
2,133,444
PRESS
Filed-Sept. 16“, 1937
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6 Sheets-Sheet 4
Oct. 18, 1938.
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R. w. GLAsNER E-r AL
PRESS
Filed sept. 1e, 1957
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Oct. -’18, 1938.
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Filed Sept. 16, 1937
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Patentes on. 1s, 193s
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PATENT OFFICE
_- UNITED STATES'
2,133,444
mss
Rudolph W. Glasner and Einar K. Johansen,
Chicago, Ill.; laid Johansen assigner to said
Gleaner
' Application September 18, 1937, Serial No. 164,176
>
Y
4 Claims.
(Cl. 113-38)
Figure 1 is a view partly in elevation, partly in
This invention relates to improvements in
section and partly broken away of a press of
presses particularly adapted, though not neces
sarily limited to that type of presses commonly this character constructed in accordance with the
known as triple action, used in drawing metal. principles of this invention.
Figure 2 is a tcp plan view of Figure 1.
In presses of this character, 'and particularly
when a plurality of slides are employed, one of
which is operable as a blank or work holder, it is
necessary in order to perform the drawing, or thev
shaping oi’ the work, to p'rovide a degree or- period
10 of dwell in the blank holding slide while itis hold
ing or gripping the work, and while another slide
is imparting its operating stroke.
Heretofore the operating means for the blank
holder has either been iroma crank motion, or
mechanism describing a circular path oi' move
ment, and in order to obtain a long dwell it has
been necessary to employ a large number or series
of links, the pivots of which pass through dead
centers, as well as other complicated and expen
20 sive mechanism.
Even with such prior structures the amount of
dwell obtained has been of comparatively short
duration with respect to the 360° of rotation of
the actuating shafts or gears.
It is one of the objects of the present inven
25. . tion to provide improved means whereby a de
gree of dwell of the blank or work holding slide
, as high as`150° or even more of a dwell can be
obtained .in one complete cycle of rotation of the
main driving gear or shaft, and at the same time
30 simplify the construction and reduce the amount
of linkage necessary, by selecting the driving or
operating point for the blank holder movement,
and locating such driving or connection point of
the links with an eccentric actuating strap, and
which point of connection will be laterally offset
with respect to the center of the eccentric, caus
ing, when the eccentric is rotated, the center of
the pin or connection to travel in an elliptical
path of movement, thereby obtaining a long dwell
without the use of the conventional link motion.
During such movement of the said point of
connection, the period of dwell of the blank or
. Work holder will occur on the ñat or long side of
the ellipse.
~
With this simple construction of providing an
_ offset pin on' the eccentric strap, all that is neces
sary to change the amount of dwell is to change
the location of the center of this pin, whereas in
50 presses of the conventional type, change of the
entire linkage is necessary if the duration of
dwell is required to be. altered.
'
To the attainment of these ends andthe ac
complishment of other new and useful objects as
will appear, th'e invention consistsin the fea
tures of novelty in substantially the construction,
combination', and arrangement oi the several
parts, hereinafter more i‘ully described and
claimed and shown in the accompanying draw
60 ings illustrating this invention, and in which
- Figure 3 is a detail vertical sectional view taken I
on line 3-3, Figure2.
Figure 4 is a view partly in elevation. partly in
section and partly broken away of the mecha
niszn for actuating the inner slide.
10
' Figure 5 is a view similar to Figure 4 showing a
portion oi' the mechanism for actuating the. outer
slide.
»
Figure 6 is a detail view partly in elevation,
partly broken away and partly in section, show
ing a portion of the mechanism whereby the ex
tended period of dwell of the inner slide is ob-'
tained, on an enlarged scale.
Figure 7 is a detail perspective view oi the
mechanism shown in Figure 6.
20
Figure 8 is a view partly in elevation, partly in
section and partly ‘broken away, showing the bed
of a press, the lower slide and the mechanism for
actuating the lower slide.
Figure 9 is an irregular vertical sectional view
taken online 9_9, Figure 8.
25
Figure 10 is a cyclograph of the movement of
the slides showing the extended or long period
of dwell obtained in the slides.
Figure 11 isanother cyclograph of the move
ment of the upper slides obtainable with this 30
mechanism.
f
`
Referring more particularly to the drawings,
the press consists essentially of a bed I 5, uprights
I6, a hollow crown I1, secured together in any
suitable manner, an outer slide I8 slidable upon 35
guides I9 carried by the uprights, and an inner
slide 20 nested with the'outer slide I8 and mov
able in guides 2l on the outer slide, all as well
known in this art.
` The outer slide I8, constituting a blank or work 40
holder, is supported by upright members 22 ad
justably connected at one end yto the slide, in
any suitable manner and moving through suit
able. bearings 23, supported by the bottom of the
crown Il, and which bearings are of such a length
that the outer slide will be relieved of all lateral
stresses exerted upon the members 22 by the ac
tuating mechanism.
Loosely supported upon shafts 24, which shafts
are laterally spaced, parallel with each other, and
journaled in suitable bearings, are rocking mem
bers 25, one member being provided for each of .
the supporting lmembers 22, and the members 25
are connected with the respective members 22
through the medium of links'26 pivotally con
nected at one end as at 21 with the members 25,
and pivotally connected at their other end `as at
28 with the members 22, so that when the mem
bers '25 are rocked about the shafts 2l, in a man
2
2,138,444
' ner to be described, a reciprocatory movement ,
which is connected to the free end or extremity
43 of the eccentric strap.
In order- to obtain a period of dwell in the outer `
With this construction four eccentrics will be
slide, suitable mechanism intermediate the mem
provided and the connections between the links
bers 25 and the actuating eccentric is provided, and the portion 3| of th'e eccentric strap, by the
and as the actuating mechanism which is con
pivot 4| will operate the outer slide, one being pro
nected to each of the members 22 is the same, vided adjacent each corner of the slide, while
the description of one will apply equally as well the free ends of the eccentric strap through the
to them all. Secured to the shaft 24 for rotation medium of the link connection will operate the
10 therewith is an eccentric 29, and an eccentric inner slide. Each eccentric strap will be con 10
strap 30 encompasses the eccentric and the ec
nected at one point to the outer slide and at an
centric strap is provided with a projecting por
other point to the inn'er slide but the points of
tion 3| which is offset laterally with respect to connection between the outer and inner slides
the center of the eccentric. A supporting shaft> will be on opposite sidesof the press.
32 arranged parallel with the shaft 24`carries
'I'he shafts 24 have secured thereto operating 15
a sleeve 33 mounted to oscillate about such shaft, ~ gears 53 (see particularly Figures 1 and 2) which
and connected to the sleeve is an arm 34 which mesh with each other and meshing with one of
will be imparted to the outer slide I9.
, in turn is connected by means of a link 35 with
-the gears is a pinion 54 which is mounted upon a
the rocking member 25, the link 35 being piv
shaft 55 and on the shaft 55 is another gear 56.
20 otally connected as at 36 with the arm 34 and as
at 31 with the member 25.
The sleeve 33 is provided with arms36 (see
particularly Figure 2) which are connected with
the eccentric strap 30 through the medium of a
25 link 39 one »end of which is pivotally connected
»as at 40 to the arms 38 and the other end is piv
otally connected as at 4| with the extension 3|
of the eccentric strap 30.
With this construction, when the eccentric 29
ao is rotated in the direction indicated by the ar
row in Figure 6 the eccentric strap, and particu
larly the portion 3| thereof, will be given a move
ment that the point of pivotal connection 4|
.between the link 39 and the portion 3| of the
35 eccentric strap will be given an elliptical path of
movement as indicated by the line 42 in Figure 6.
This will rock the sleeve 33 and through the me
dium of the intermediate connecting members
between the sleeve 33 and the member 22 will,
40 move the outer slide downwardly into engage
ment with the work and thence upwardly. The
movement of the slide toward and into engage
ment with the work will occur while the pivot
point 4| is traveling through the smaller arcs of
45 the ellipse; and, after the slide has moved into
engagement with the work lto clamp the same,
the pivot point 4| will be traveling along the long
side of the ellipse, thereby producing a prolonged
or extended dwell of the slide for approximately
50 150° of the 360° of rotation of the driving shaft
24 or eccentric 29.
The end 43 of the eccentric strap 30 is con
nected to an arm 44 by means of a pivot 45 and
this arm 44 is connected to a sleeve 46 (see par
55 ticularly Figure 3) that is in turn mounted upon
a bearing or extension 41 of one of the eccentrics
29, and depending from the sleeve 46 is an arm
48 to vwhich latter is pivotally connected by means
of a pivot 49, a link 50. 'I'his link in turn is con
nected to upright members 5| (see also Figure 4)
This gear 56 is in turn rotated by means of a 20
pinion 51 meshing therewith. The pinion 51 is
driven from a motor 58. Intermediate the pinion
51 and the motor 58 is a clutch device of any de
sired or suitable construction which is adapted to
be rendered active and inactive to cause the shafts 25
24 tobe rotated or to arrest their movement.
This is accomplished by actuating the clutch de
vice 59 in any suitable manner, either manually,
electrically, hydraulically or by fluid pressure (not
'
shown) .
Suilice it to say that when the clutch 30
islrendered active the shafts 24 will be rotated
but when the clutch is rendered inactive the
shafts 24 will remain idle. Any suitable connec
tion between the pinion 51 and the motor may
be provided, such for instance as a belt drive 60
passing over a pulley 6| on the motor shaft and a
pulley 62 which forms a part of the clutch device.
A lower slide 63 operates in the bed I5 and this
slide may be actuated in any desiredor suitable
manner such as by means of eccentrics 64 with
which eccentric straps 65 co-operate. These ec
centric straps are pivotally connected to up
rights 66, any number of which may be provided.
The uprights in turn are adjustably connected
with the slide 63, as at 61, and the uprights slide 45
in extended bearings 68 so that any lateral
»stresses exertedupon the uprights 66. by the
actuating mechanism will not be manifested upon
the slide 63.
.
One of these uprights and eccentric driving. 50
mechanisms is preferably provided in each corner
of and below the bed..
'
Each eccentric 64, is secured to a shaft 69 and
the shaft is rotated by means of a gear 16 with ,
which a pinion gear 1| meshes. This pinion gear 55
is in turn connected with a. gear 12 and the adja
cent gears 12 mesh with each other. A pinion
gear 13 meshes with one of the gears 12 and this
pinion gear is connected to a shaft 14, the shaft
in turn being connected to a clutch member 15,
which latter are in turn adjustably connected to
the inner slide 22 (see also Figure 1). The mem
bers 5| slide in extended bearings 52 which are
Supported by the crown |1. 'I'he bearings 52 are
65 of such a length that the members 5| will re
main upright so that any lateral stress exerted
an endless drive belt 11 which passes over a 65
upon the members 5| by the actuating mecha
nism for the inner slide, will not be manifested
upon the inner slide 20.
'I'hus it will be seen that upon operation of the
eccentric 29, the outer slide will be operated
through the medium of the connection of the
links between the slide and the eccentric strap
at one end of the eccentric strap, and the inner
pulley 18 on the shaft 19 of a motor 80, the motor
80 being supported by a suitable bracket 6|. .
The clutch member 16 is continuously rotated
by the motor and is mounted to freely rotate 70
upon the shaft 14 and when the clutch 15 is in
active with respect to the clutch member 16, the
shaft 14 will remain idle. When, however, the
clutch members 15 and 16 are rendered active
'Il slide will be operated by the link mechanism
with respect to each other, the shaft 14' will be 75
(see particularly Figures 8 and 9).
Loosely
mounted upon the shaft 14 is another clutch
member 16 with which the clutch member 15 co
operates. Passing over the clutch member 16 is
3
2,138,444
rotated and this in turn will rotate eccentrics 64
to reciprocate the slide 63.
Y
The upper slides I8 and 20 and the lower slide
63 may be operated in timed relation with each
other or in any predetermined order or sequence,
the operation of the slides being controlled by the
respective clutch devices.
By reason of the link connection between the
eccentric straps 30 and the outer slides, and by
10 reason of the pivot 4| traveling in the elliptical
path indicated by the line 42, there is procured
one end to the other set of rocker members and
pivotally connected at the other end to the ec
centric straps at points offset from the center
of the respective eccentrics, the said points mov
ing in an elliptical path during operation of the
eccentrics, said links being of such length' that
during the movement of said points about a. sub
stantial portion of its elliptical path they will
pivot about their points of connection with the
rocker members, whereby an extended period of 10
dwell will be obtained in the slide.
2. In a press, a plurality of slides, a plurality
a period of dwell in the operation of the outer
ofv eccentrics, eccentric straps individual to the
slide for a greater extent, or approximately 150°
with respect to the complete cycle of operation of eccentrics, two sets of rocker members, said ec
the driving shafts, to-wit, the shafts 24, or the centric straps directly connected to one set of
eccentrics 29, than has been possible with the said rocker members, means forming connections
construction heretofore provided. The period of between one of said sets of rocker members and
dwell in the operation of the outer slide is dia , one of said slides, means forming connections be
grammatically represented in the cyclographs. tween the other set of rocker members and an
other of said slides, links pivotally connected at
The degree of dwell of the inner slide is also
20
one end to the other set of rocker members and
indicated in cyclographs.
When it is desired to increase the period of- pivotally connected at the other end to the ec
dwell in the operation of b_oth the inner and the centric straps at points oiîset from the center of
outer slides, the clutch device controlling these the respective eccentrics, the said points moving
in an elliptical path during operation of the ec
25 two slides is rendered inactive at a predetermined
centrics, said links being of such lengths that
time of the operation of the press, that is, when
the slides reach the limit of their lowermost during the movement of said points about a sub
movement; that is, when the dies carried by these stantial portion of its elliptical path they will
slides are operating upon the work, the 'clutch pivot about their points of connection with th'e
rocker members, this portion of the `ellipitical
30 device which controls these slides is rendered in
active. In other words, the actuating mechanism path being substantially the same as the path of
a radius of the link described from its point of
for the slides i8 and 20 is disconnected from the
motor so that these two slides will remain at rest connection with the rocker member, whereby an
extended period of dwell will be obtained in the
lwhile the lower slide is operating.
When it is desired to control the movement of slide.
35
3. A press, embodying in its structure two
the lower slide the clutch device which controls
slides, an eccentric, an eccentric strap,- a rocker
this slide is rendered active or inactive according
to the work which the lower slide is to perform member, said eccentric strap connected to the
or whether it is desired to maintain the lower
slide inactive.
‘
~
`
'I‘he dwell is obtained in the outer or blank
holding slide through the medium of the link
connection with the eccentric strap, while the
dwell of the inner slide is obtained by disengag
ing the clutch device and arresting the move
ment of the shafts 24 and eccentrics 29.
With this improved construction it will be
manifest that the period of dwell of the slides
is materially increased from the period of -dwells
20
25
30
35
rocker member, means forming a connection be
tween said rocker member and one of the slides, a -
second rocker member, means forming a connec
tion between said second rocker member and the
other slide, a link pivotally connected at one
40
end to the last said rocker member and pivotally y
connected at its other end to the eccentric strap
at a point oiîset from the center of the eccentric,
said point moving in an elliptical path during
operation of the eccentric, said link being of rsuch
length that during the movement of said point
which can be obtained with prior constructions, . through a portion of its elliptical path it will
50 and at the same time a‘ considerably less eX
pivot about its point of connection with the rock 50
pensive structure is produced and the number of
links has been reduced and the complicated
mechanism heretofore necessary to accomplish
these results has been very much simplified.
55
By the manipulation of the clutch devices with
respect to their individual actuating mechanisms,
this press may be caused to operate either as a
triple or a double action press.
er member, whereby an extended'period of dwell
will be obtained in the slide. '
4. A press embodying in its structure two slides,
an eccentric, an eccentric strap, a rocker member,
said eccentric strap connected to the rocker mem 55
ber, means forming a connection between said
rocker member and one of the slides, a second
rocker member, means forming a connection be
While the preferred form of the invention has
been herein described, it is to be understood that
various changes may be made in the details of
tween said second rocker member and the other
slide, a link pivotally connected at one end to the 60
construction and in the combination and ar
at its'other end to the eccentric strap at a point
rangement of the several parts, within the scope
of the claims, without departing from the spirit
of this invention.
'
What is claimed as new is:
1. In a press, a plurality of slides, a plurality of
eccentrics, eccentric straps individual to the ec
centrics, two sets of rocker members, said' eccen
70 tric’straps directly connected to one set of said
rocker members, means forming connections be
' tween one of said sets of rocker members and
one of said slides, means forming connections be
tween the other set of rocker members and an- '
75 other of said slides, links pivotally connected at
last said rocker member and pivotally connected
offset from the center of the eccentric, said point
moving'in an elliptical path during operation of
the' eccentric, said link being of such` length that 65
during the movement of said point through a
portion of its elliptical path it will pivot about
vits point oi’ connection with the rocker member,
this portion of the elliptical path being substan
tially the same as the radius of the link described 70
from its point of _ connection with the rocker
member, whereby an extended period of dwell
will be obtained in the slide.
~
`
RUDOLPH W. GLASNER.
EINAR K. JOI-IANISEN.
i
75
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