US2243952A

US2243952A - Press

Info

Publication number: US2243952A
Application number: US265401A
Authority: US
Inventors: Rudolph W Glasner
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-04-01
Filing date: 1939-04-01
Publication date: 1941-06-03
Anticipated expiration: 1958-06-03
Also published as: GB528497A; DE904622C; FR854965A

Description

June 3, 1941 w GLASNER 2,243,952 I PRESS Filed April 1, 1958 3 Sheets-Sheet 1 June 3, 1941. R. w. GLASNER PRESS Filed April 1, 1939 3 Sheets-Sheet '2 June 3, 1941. R. w. GLASNER 2,243,952

PRESS Filed April 1, 1939 a SheetsQShee't a iii? k x' Q 2],

*il' f Patented June 3, 194-1 UNITED STATES PATENT OFFICE PRESS Rudolph W. Glasner, Chicago, Ill. Application April 1, 1939, Serial No. 265,401

6 Claims.

This invention relates to improvements in presses, particularly adapted though not necessarily limited in use for operation upon metal.

Heretofore, in presses of this character it has been customary to mount the cranks or cams for actuating the slide, upon long shafts extending substantially across the press frame from one side to the other side thereof, with the result that the main stress exerting parts of the die and slide often extend or are located beyond the points of connection between the cranks or eccentrics and the slide, with the further result that there is a tendency to tilt the slide or spring the shaft.

Furthermore, with the prior construction it has not been possible to increase the length of the press, that is, the distance between the side members or uprights of the press frame, without in-- creasing the length of the shafts, and the defiection and torque of the shaft under operating conditions.

' It is one of the objects of the present invention to provide an improved press of this character wherein all of the connections between the slide and the operating shaft will be disposed entirely within and housed by the uprights of the press frame, with the result that the lower face of the slide will substantially fill the space between the uprights, and with the further result that when a die or dies which is, or are fastened to the slide are of a shape or requirement which exert high pressures off center, such pressure loads will be exerted entirely within the area of the points at which the actuating power is exerted upon the slide.

A further object is to provide in an improved press of this character a frame in which the crown may serve only as a spacing member or means for connecting the upper ends of the uprights together and serves no important function as regards the taking of any strains or stresses built up when the press is exerting its operating force upon the work.

A further object is to provide in a press of this character an improved frame embodying hollow uprights in which the shafts for the operating cranks or eccentrics which are connected to the ends of the slide are separate from each other and. supported within their respective uprights, thereby rendering it possible to increase the width of the press without increasing the length of such main stress bearing shafts and without altering the points of connection between the slide and such shafts.

To the attainment of these ends and the accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arrangement of the several parts, hereinafter more fully described and claimed and shown in the accompanying drawings illustrating this invention, and in which- Figure l is a view partly in vertical section and partly in elevation of a press of this character constructed in accordance with the principles of this invention.

Figure 2 is a detail vertical sectional View taken on line 22, Figure 1.

Figure 3 is a vertical sectional view taken on line 3--3 Figure 1.

Figure 4 is a vertical sectional view taken on line 44 Figure 2, on an enlarged scale.

Figure 5 is a view similar to Figure 4 showing the parts in another position.

Figure 6 is a detail perspective view of a modified form of adjustment for the slide.

The press consists essentially of a base l0 which may be constructed in any desired or suitable manner and uprights ll projecting thereabove. These uprights are hollow and may be formed in any suitable manner. At the upper end of the uprights there is arranged a connection for maintaining the uprights in fixed spaced relation to each other. This connection member may consist of a crown l2 or may be formed of any suitable connection member.

The numeral I3 designates generally a slide which is reciprocable between the uprights H, and the lower face M of the slide to which the dies are secured is of an unobstructed area to substantially fill the space between the uprights, not only increasing the space to which the dies may be fastened, but when a die or dies of a kind are fastened to the slide, the shape or requirement of which exert high pressures 01f center, these pressure loads will always be within the area of the power or slide operating means which operating power means are applied to the slide at points beyond the space intermediate the uprights and within and housed by the uprights.

To this end the operating mechanism for the slide is applied to both ends thereof, and is housed in the respective uprights.

Each of these actuating mechanisms for the slide in the present exemplification of the invention embodies a shaftv I5 which is supported by opposite walls of the upright and is fixed against rotation, the shaft serving as an additional means for maintaining the walls of the upright in fixed spaced relation.

' Rotatably supported by the shaft 15 and within the upright is a gear I6 which has secured thereto and forming a part thereof an eccentric ll.

Encompassing the eccentric is an eccentric strap IE and the end of the strap is pivotally connected as at I?) to an adjustable member or nut 23.

Secured to the slide I3 in any suitable manner and for movement therewith is a housing 2i which projects into the upright llv through a slot 22 in the wall of the upright so as not to interfere with the reciprocation of the slide.

The housing 2! is provided with an enlarged portion 23 in which a head or shouldered portion 2% of the nut or member reciprocates while the body portion of the slide reciprocates within the portion 25 of the housing 2l. Y

the ordinary and well known combined clutch and brake mechanism in which the elements work in opposition to each other, that is, when the brake is applied the clutch will be released, and vice versa.

Any suitable mechanism may be provided for adjusting the slide with respect to its operating mechanism to vary the working space above the bed 33 while the stroke of the slide will remain constant.

A suitable and efiicient mechanism embodies a shaft 44 which is mounted in suitable bearings upon the slide and the ends of the shaft project through the openings 22 in the uprights, pinion gears 46 being secured to the ends of the shaft to mesh respectively with the beveled 7 gears 36].

The housing 2i may be of any desired length with respect to the length of the nut ormember 25 so as to allow the latter to be relatively a-djusted with respect to the housing in directions lengthwise to the axes thereof.

Centrally disposed within the housing 28 is an upright screw 26 mounted for rotation in any suitable manner such as by means of a reduced end 2? thereof passing loosely through the bottom of the housing 2! with its extremity threaded, as at 28, to receive a nut or collar 29.

Secured to the screw 26 for rotation therewith and within the housing 21 is a beveled gear 39 and the screw 25 projects into a threaded recess 3i through the bottom of the nut or member 20. Upon rotation of the screw 26 the nut or member 28 will be adjusted with respect to the housing 21 lengthwise of its axis so as to adjust the slide I3 to vary the working space between the slide and a bolster plate 32 which is secured to the bed plate 33 of the base it, according to the direction of rotation of the screw 25.

After the nut or member 26 has been adjusted or the slide i3 has been properly positioned according to the size of the working space it is desired to provide, the slide will be reciprocated upon rotation of the gears it, the connection being provided by means of the eccentric ll, eccentricstrap i8, pivot l9, nut or member 20, screw 2% and housing 2i.

Motion may be imparted to the gears 15 from any suitable source of power through the medium c: a driving belt 3d which engages over a ulley 35 that loosely rotates upon a shaft 35 extending across the frame and journaled in suitable hearings in the uprights. 7

Gears, M are secured to the shaft 35 for rotation therewith and these gears are disposed within the respective uprights and mesh respectively with the gears iii.

The pulley 35 maybe connected to the shaft 35 for rotation therewith in any desired or suitable manner and throughthe medium of any suitable fluid pressure controlled mechanism 33, fluid pressure being admitted to the clutch mechanism through a-passageway '39 in the shaft which receives fluid pressure from the source I through a pipe 43.

Associated with the clutch mechanism is a brake of any desired or suitable construction, suilice it to say that it embodies a brake element ti which is adapted to be moved into engagement with a stationary brake element 52 secured v .to any. suitable stationary part of the frame; this Couplings ll may, if desired, be provided in the shaft 44.

This shaft 44 may be rotated by means of a motors? mounted upon the slide and suitably controlled, the shaft of the. motor being connected with the shaft 44 by a suitable reduction gearing or drive mechanism diagrammatically illustrated at 49.

The l'l'llOtOI' may be of a type to impart a forward or backward rotation to its shaft and likewise rotate the shaft 44 forwardly or backwardly according to the direction of rotation of the motor shaft.

When the shaft 44 is rotated the gears 30 will also be rotated through the medium of the gears 46 and this will in turn rotate the screws .25, simultaneously.

If desired, a manually operated mechanism may be provided for rotating the shaft 44 such for instance as a ratchet gear 50 which may be secured to the shaft 44 and this ratchet gear may be rotated intermittently by means of an operating lever 5| through the medium of an ordinary pawl 52. If desired, and in order to maintain the lever 5! in its adjusted position a fastening pin 53 may be provided which passes through a portion of the lever and being adapted to enter recesses or openings 54in a portion 55 of the slide;

This hand actuated mechanism is also carried by and is reciprocable with the slide. 7

Within the base 10 of the press may be arranged suitable cushioning mechanism 56 which may be a single unit or a plurality of units and may be of any ordinar and well known construction, suffice it to say that the cushioning mechanism. embodies a pin supporting plate 5? against which die supporting pins are adapted to rest and which die supporting pinspass freely through openings 58 in the bolster 32 and registering openings 59 in the bed plate 33.

With this improved construction of press it will be manifest that the power exerted upon the slide to reciprocate the same and toperform :of a connecting member which may be the crown of the press or any other connecting member, andthat the crown of the press, ifit' is-em ployed as a connecting member, will be relieved of all of the working stresses exerted against the slide, and serves merely as a means for maintaining the slides of the uprights in fixed spaced relation.

It will also be manifest that with this construction the width of the press may be varied and when so varied it is not necessary to increase the length of the operating shaft for the slide operating mechanism with the further advantage that stresses and strains against the shaft will be exerted against the shaft and such shafts, will not be subjected to the usual torque present in shafts of extended length.

While the preferred form of the invention has been herein shown and described, it is to be understood that various changes may be made in the details of construction and in the combination and arrangement 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. A press embodying spaced uprights, a slide reciprocable between the uprights, each of said uprights embodying oppositely spaced walls, a shaft supported completely by both walls of the respective uprights, the length of said shaft being commensurate with the width of the upright in directions lengthwise of the shaft, a gear supported by each of said shafts, operative connections between said gears and said slide, said connections being disposed within the respective uprights, the work resisting stresses upon the slide being exerted lengthwise of the respective uprights and entirely upon the said walls thereof through the medium of the respective said shafts, and means for rotating said gears.

2. A press embodying spaced uprights, a slide reciprocable between the uprights, each of said uprights embodying oppositely spaced walls, a shaft supported completely by both walls of the respective uprights, the length of said shaft being commensurate with the width of the upright in directions lengthwise of the shaft, a gear supported by each of said shafts, operative connections between said gears and said slide, said connections being disposed within the respective uprights, the work resisting stresses upon the slide being exerted lengthwise of the respective uprights and entirely upon the said walls thereof through the medium of the respective said shafts, and means for rotating said gears, said operative connections each embodying an eccentric connected with the said gear.

3. A press embodying spaced uprights, a slide reciprocable between the uprights, each of said uprights embodying oppositely spaced walls, a shaft supported completely by both walls of the respective uprights, the length of said shaft being commensurate with the width of the upright in directions lengthwise of the shaft, a gear supported by each of said shafts, operative connections between said gears and said slide, said connections being disposed within the respective uprights, the work resisting stresses upon the slide being exerted lengthwise of the respective uprights and entirely upon the said walls thereof through the medium of the respective said shafts, and means for rotating said gears, said operative connections each embodying an eccentric connected with the said gear, said connections each embodying adjustment means whereby the depth of the space between the slide and press bed may be varied while the stroke of the slide remains constant, said adjustment means being disposed Within the confines of the respective uprights.

4. A press embodying spaced uprights, a slide reciprocable between the uprights, each of said uprights embodying oppositely spaced walls, a shaft supported completely by both Walls of the respective uprights, the length of the shaft being substantially commensurate with the width of the upright in the direction lengthwise of the shaft, a driving element carried by each of the shafts, an operative connection between said slide and each of said driving elements, said elements and said driving connections being disposed within the respective uprights, whereby the work resisting stresses upon the slide will be exerted lengthwise of the uprights and entirely upon the walls of the uprights through the medium of the respective said shafts, and means for actuating said driving elements.

5. A press of the character described embodying spaced uprights, means maintaining the uprights in fixed spaced relationship, a rotary power driven shaft journaled in opposite uprights, interm'ediary speed reduction mechanisms between said slide and said shaft and embodying rotary eccentrics journaled in the respective uprights and driven by said mechanism, thrust imparting connections between said eccentrics and the slide, said thrust connections operating within the uprights and reacting thereupon lengthwise thereof through said eccentrics so that the uprights themselves tend to maintain the constancy of their spaced inter-relationship and the said connecting means will be relieved of the stress of the slide operating means, the said uprights being hollow, and the said speed reduction mechanisms, the said eccentrics and the thrust imparting connections being housed within the uprights.

6. A press of the character described embodying spaced uprights, means maintaining the uprights in fixed spaced relationship, a rotary power driven shaft journaled in opposite uprights, intermediary speed reduction mechanism between said slide and said shaft and embodying rotary eccentrics journaled in the respective uprights and driven by said mechanism, and thrust imparting connections between said eccentric and the slide, said thrust connections operating within the uprights and reacting thereupon lengthwise thereof through said eccentrics so that the uprights themselves tend to maintain the constancy of their spaced inter-relationship and the said connecting means between the uprights will be relieved of the stress of the slide operating means, said uprights embodying opposite walls and said operating means embodying a bearing shaft completely supported by both of the walls of the respective uprights, the length of said bearing shaft being commensurate with the width of the upright in a direction lengthwise of the shaft, the said bearing shaft being fixed to the walls of the upright and serving as a journal for a rotatable gear and eccentric unit.

RUDOLPH N. GLAgNER.