US1702856A - Bending machine - Google Patents

Description

Feb. 19, 1929. 1,702,856

A. TROSCH v BENDING MACHINE Filed June 14; 1927 4 Sheets-Sheet 1 mvErg oR .Troscfi/ ATTORNEY Feb. 19, 1929.

A. TROSCH BENDING MACHINE 4 Sheets-Sheet 2 Filed June 14, 1927 INVEN'LO rcd iosc/e/ m ATTORNEY Feb. 19, 1929. I 1,702,856

A. TROSCH BENDING MACHINE Filed June 14, 1927 4 Sheets-Sheet 5 INYENTOR V ficpzrmscz/ kwemwhfg,

@ A/ ATTORNEY Feb. 19, 1929.

.A. TROSCH BENDING MACHINE Filed June 14, 1927 4 Sheets-Sheet 4 wl lv V 9 ATTOR N EY Patented Feb. 19, 1929 uNr-rso "STAT-Es I 1,702,856 PATENT H OFFICE.

ALFRED rnoscn, O F ROCHE STER, NEW YORK, ASSIGNOR TO CONSOLIDATED mom 'roon con-rename}: or AMERICA, or ROCHESTERNEW YORK, A CORPORATION 01' DELAWARE.

relative to the other, that is simple,- ellicient,

and compact, taking up a minimum amount of floor spaceand operating smoothly.

Another object is to provide a compact 1 driving mechanism which gives proper speed reduction between the motor and driven roll and thereby permits use of an looking at the right end thereof;

electric motor with satisfactory results.-

Another object to arrange compact andellicient speed reducing mechanism between the roll elevating and lowering means and the controlling motor therefor so that an electric motor may be used also for adjusting the bodily-movable roll. q i

A further object is to provide an efllc ent and simple mechanism whereby either end of the bodily movable roll may be adjusted separately or both ends may be adjusted s1- multaneously.

Still another obj ple and eflicicnt lubrication of the speed reducing mechanism units controlling both rotation and relative adjustment of the rolls; a With these and other ends in view, the invention comprises the structure and combination of parts which will appear more clearly from the following description when re; n conjunction with the accompanying drawings, the novel features being pointed out in the claims following the specification.

In the drawings:

Figure 1 is a side elevation of a bending machine showing one possible embodiment of my invention;

Figure 2 is a plan view thereof;

Figure 3 is a section through the bending rolls o f the machine showingtheir action in bending a plate into eylindrical form,

Figure 4 is an end view of the machine Figure 5 is a sectional view takenapproximately on the line 55 of Figure 2 and" illustrating one possible embodiment of the drive for the adjusting mechanism; t

Figure 6 is a sectional view taken approximately on the line 6-6 of Figure 2, at right angles to the plane of Figure 5, and

Figure '7 is a section approximately on the line 77-of Figure 1. 1

' ards.

set is to provide for sim-' I VIBENDILNGMACHINEK Application filed June 14, 1927. Serial No. 198,702.

The invention may be applied to various typesof bending machines and is here illus-" trated in conjunction with one conventional type having a bed plate 11 with standards 12 and 13 at the'ends thereof. Lower bending rolls 14 and 15 are journalled at their ends in these standards, and at their left hand ends carry drive pinions 16 and-l7 respectively. An upper bending roll 18 is placed above the rolls 14 and 15 and is adjustable relative to the lower rolls so as to obtain various curvatures on the plates being bent by the machine.

To this end, the'ends of the roll 18 are not journalled directly in the standards 12 and 13 butare mounted in members which are movable vertically relative to the stand- The left hand end of the adjustable roll may be journalled ina block 19 which is attached through a pin'20 to a yoke 21 slidable in vertical guideways in the standard l3 and secured at its lower end to a rod 22 having screw threads 23 thereon. The right hand end of the adjustable roll 18 may be journalled in a block 24 connected through the-pin 25 to the yoke 26 which is attached at its lower end to a member 27 slidable vertically ina slot 28 'inthe stand ard 12. The' lower' end of the member 27 is pivoted at 29 to a rod 30, which, like'the rod 22, carries screw threads at the bottom thereof. Preferably, the block 24 is cut away above the end of the roll'18, and a tapered block 31 is inserted in the opening. 7 The lower side of the block 31 is provided with a suitable bearing surface for the end of the the member 27 may be swung away from the end of the roll about the pin 29 asa pivot. v

To the left of the bed plate 11 is an extension 32 thereof, to which maybe attached a pair of vertical rods 33. Across-piece34 connects these rods at the top and through this cross-piece is threaded a screw 35 having a hand-wheel 36 at the top thereof and a bearing block 37 at the bottom. This block 37 is arranged, when the screw 35gb screwed downward, to bear upon an extension 38 at the left hand end of the roll 18. Therefore, when the yoke 26 has been moved away from the right hand end of the roll 18, as above described, the screw 35 may be utilized to depress the extension 88 and raise the right hand end of the roll, which then pivots about the pin 20. Such a construction is necessary because it is of-en desired to bend plates into cylindrical form, as shown in Figure 3, and when the cylinder has been completed there is no way of removing it from the rolls except to raise the end of the roll 18, as above described, and slip the cylinder off the end thereof.

The mechanism heretofore described is a well known type of bending machine and forms no part of the present invention. This invention relates to a driving mechanism for rotating the rolls and the mechanism for adjusting the top roll 18 with respect to the bottom rolls.

The drive mechanisms heretofore used on bending rolls have been costly, complicated, and cumbersome. As is well known in the art, bending rolls must rotate at a comparatively slow speed. VJhere electric motors have been used for driving them, the speed of the motor has been found much too high for the speed of the roll, and it has therefore been necessary to provide a long series of speed-reducing gears in order to accomplish the transition from the high speed of the motor to the low speed of the roll. These gears have taken up a large amount of space, have been costly to manufacture, and to keep in repair, have been difficult to lubrioate, and have resulted in much less of power and lack of smoothness. The present invention overcomes these objections by the use of a simple and effective drive which reduces the high motor speed to the required slow speed without difiiculty, which is easy and comparatively inexpensive to manufacture and to keep in repair, which takes up comparatively little room, and gives a generally smoother operation. Furthermore, it is easy to lubricate, and greatly reduces the frictional losses.

The invention may be carried out in a number of ways, and as one possible embodiment, there is shown an electric motor 40, mounted upon the bed plate 32 which is rigidly connected to the bed plate 11. Directly connected to the armature shaft of the motor is a worm 41 which drives a worm wheel 42, the latter being fixed to a jack shaft 43. journalled on a pedestal 4. A pinion 45 near one end of the shaft 43 meshes with both the pinions 16 and 17 on the lower rolls 1 1 and 15. A housing 426 completely surrounds the worm ll and worm wheel 4-2, and is preferably made oil tight. This housing may be kept partially filled with oil so that the worm and worm wheel run constantly in a bath of oil. The worm and worm wheel may be of any suitable material, although it is preferred to use a vanadium steel worm and a phosphor bronze worm wheel because of the suits obtained therefrom.

It will be observed that this construction takes up but little room. At thesam'e time, the use of the worm drive reduces the motor speed to the desired roll speed in a single step, thus eliminating the long trains of speed-reducing gearing heretofore used, and doing away also with the excessive frictional losses inherent in such trains. The drive is easily and thoroughly lubricated, since it may be run in a bath of oil. As it consists of but few parts, it is comparatively easyand cheap to manufacture and to keep in order, and takes up much less space than the drives heretofore commonly used.

The improved mechanism for adjusting the top roll 18 will now be described. It is apparent from the mechanism described above that the roll 18 may be adjusted by raising or lowering the rods 22 and 30. As heretofore described, these rods each have screw threads near their bottom ends. A worm wheel is threaded upon each of "these rods and is retained against Vertical movement by suitable thrust bearings 51 and 52 in the standards 12 and 13. Thus it is seen that rotation of the worm wheels 50 will result in screwing the rods 22 and 30 up or down, effecting adjustment of the top roll 18.

In order to produce the desired rotation of the worm wheels 50, there may be pro-, videda motor 53 mounted upon the bed plate of the machine, between the standards 12 and 18, where it will take up but little room and thus not increase the floor space of the machine. Directly connected to the armature shaft of this motor is a Worm 54 driving a worm wheel. 55 on a shaft 56. This worm'and worm wheel may be of any suitable material, such as a vanadium steel worm and a phosphor bronze worm wheel. Preferably, an oil-tight housing 57 surrounds the worm and worm wheel and enables them to be run constantly in a bath of oil.

Just outside of the housing 57, both ends of the shaft 56 are provided with clutch jaws 58. In alinement with the shaft 56 are two jack shafts 59 and 60 to which are affixed worms 61 and 62 meshing with the good rejaws 63and 64, so that movement of the arms 65,0r 66 will slide the clutch ' aws 63 or 64 respectively alongtheir sha ts, and

ing motor 40 and the adjusting motor 53 are preferably of the reversing type, so that they may be operated in either direction.

From the foregoing description it is apparent that the upper roll 18 may be ad justed with great ease. Either end of the roll may be raised or lowered by itself, by clutching in one or the other of the clutches 63 or 6%, or both ends may be raised or lowered simultaneously by engaging both clutches at once. Rotation-of the motor 53 in one direction will raise the roll, while reverse rotation will obviously result in lowering it. By providing separate driving and adjusting motors, it is possible to adjust the rolls at the same time that a plate is being fed through between them, Without in any way interfering with the feeding operation.

lVhile one embodiment of the invention has been disclosed, it is to be understood that the inventive idea may be carried out in a number of ways. Therefore it is not desired to limit this application to the precise details shown, but it is intended to cover all modifications thereof falling within the spirit of the invention or the scop of the appended claims.

I claim:

1. Ina bending machine, the combination with a plurality of bending rolls, of a driving motor therefor, said motor having a main driving shaft, a worm in alinement with and operatively connected to said driving shaft, a worm wheel driven by said worm, a shaft on which said worm wheel is mounted, the axis of' said shaft-being parallel to the axis of one of said bending rolls, a pinion on said shaft, and a pinion on one of said bending rolls, said second pinion meshing with said first pinion.

2. In a bending machine, the combination with a plurality ofbending rolls, of an elec tric driving motor therefor, said motor having'an armature shaft perpendicular to the vertical plane of the. axis, of one of said rolls, a worm connected to and in alinement with said armature shaft, a jack shaft perpendicular to the vertical plane of the axis of said armature shaft and parallel to the bending rolls, a worm wheelon said jack shaft arranged tobe driven by said worm, a pinion on said jack shaft, and apinion on one of said rolls meshing with the pinion on the jack shaft.

3. In abending machine, the combination of a plurality of bending rolls, oneof said rolls being adjustable with respect to another, separate means for adjusting eachend of said adjustable roll, an electric driving motor having an armature shaft arranged transversely of the machine, a worm driven by said motor and with its axis arranged transversely of the machine, a worm wheel driven by said wormand having its axis arranged longitudinally of the ma chine, and means for operatively connecting said worm wheel to either or both of said separate adjusting means, at will.

4. In a bendingmachine, the combination of a plurality of bending rolls, one of said rolls being adjustable with respect to another, separate means for adjusting each end of said adjustable roll, each of said separate adjusting means including a threaded rod and a worm wheel mounted upon said*rod,fa worm for driving each of saidworm wheels, a shaft upon which each of said worms is mounted, saidshafts being alined with but separated from each other, a driving motor, a worm driven by said motor, a worm Wheel driven by said worm, a shaft on j which said worm wheel is mounted, said shaft beingbetween and alined with said Worm shafts, and clutches for connecting either or both of said worm shafts with said worm wheel shaft.

'5. In a bending;machine,the combination of a plurality of bending rolls, one of said rolls being adjustable with respect to another, separate means for adjusting each end of said adjustable roll, an electric driving motor having an armature shaft arranged transversely of the machine, a worm driven by said motor and with its axis arranged transversely of the machine, a worm Wheel driven by said worm and having its axis arranged longitudinally of the machine, an oil-tight housing enclosing said worm and worm wheel, and means for operatively connecting said worm whee" to either/ or both of said separate adjusting means, at will. i w

6L In abending machine, the combination .of a plurality of bending rolls, one of said rolls being adjustable with respect to another, separate means for adjusting each end of said adjustable roll, an electric driving motor having an. armature shaft ar ranged transversely of the machine, a vanadium steel worm driven by said motor and with its axis arranged transversely of the machine, a phosphor bronze worm wheel driven by said worm and having its axis arranged longitudinally of the machine,

and means for operatively connecting said worm wheel to either or both of said separate adjusting means, at will.

7. In a bending machine, the combination of a plurality of bending rolls, one of said rolls being adjustable with respect to another, a longitudinally movable member conected to each end of said adjustable roll, each of said longitudinally movable members having screwthreads, a worm wheel threaded upon each of said members, an electric motor mounted below said rolls and having its armature shaft perpendicular to the vertical plane of the axis of one of said rolls, a worm connected to and inalinement with the armature shaft, a worm w reel driven by said worm, said worm wheel being mounted upon a shaft below and sub stantially parallel to said rolls, jacl: shafts at each end of and in alinement with said worm wheel shaft, a worm carried by each jack shaft and operatively engaging one of the worm wheels upon th threaded members, and means for connecting either or both of said jack shafts to said worm wheel shaft, whereby rotation of the motor will operate either or both of the li st mentioned worm wheels so as to move e ther or both of said longitudinally movable members to adjust said adjustable roll.

8. In a bending machine, the combination with a plurality of bending rolls, one of which is adjustable relative to another, of an electric driving motor for said rolls, said motor having an armature shaft perpendicular to the vertical plane of the axis of one of said rolls, a jack shaft substantially parallel to the axis of said rolls, a worm driven by said armature shaft, a worm wheel on said jack shaft driven by said worm, pinion on said jack shaft, a pinion on one of said rolls meshing with the pinion on the jacl: shaft, a second electric motor mounted below and between the ends of said rolls, said second motor having an armature shaft perpendicular to the vertical plane of the axis of one of said rolls, a Worm driven by the armature shaft of the second motor, a worm wheel shaft substantially parallel to the axis of said rolls, a worm wheel mounted upon said worm wheel shaft and driven by said worm, a jack shaft at each end of and in alinement with said worm wheel shaft, said jack shafts extending from the worm wheel shaft substantially to transverse planes drawn through the ends of the bending rolls, means for operathrely connecting either or both of said jaolt shafts to said worm wheel shaft, and means operated by ach jack shaft for adjusting one end of the adjustable roll.

9. In a bending machine, the combination with a pair of bending rolls arranged in the same horizontal plane and a single bending roll located thereabove, pinions carried by each of said pair of bending rolls; a driving motor, a worm driven by said motor, a worm wheel driven by said worm, a shafton which the worm wheel is mounted, and a pinion carried by said shaft and engaging boththe aforesaid pinions on thesaid pair of bending rolls.

10. In a bending machine, the combination with a pair of bending rolls arranged in the same horizontal plane and a single bendingroll arranged thereabove, pinions carried by each of said pair of bending rolls, an electric driving motor having an armature shaft arranged transversely with relation to said bending rolls, a worm driven thereby, a worm Wheel engaged by said worm, a shaft carrying said worm wheel, and a pinion on said shaft engaging and driving both the aforesaid pinions of said pair of bending rolls. i

11. In a bending machine, the combination with a pair of bending rolls arranged in the same horizontal plane and a single bending roll arranged thereabove, pinions on each of said pair of bending rolls, a; driving motor, a worm driven by said motor, a worm wheel driven by said worm, an oiltight housin enclosing said worm and worm wheel, a shaft on which the worm wheel is mounted, and a pinion carried by said shaft and engaging each of the pinions on the aforesaid pair of bending rolls. 7

12. In a bending machine, the combination with a pair of bending rolls arranged in the same horizontal plane and asingle bending roll arranged thereabove, a pinion on each of saidpair of bending rolls, a driving motor, a vanadium steel worm driven by said motor, a phosphor bronze worm wheel driven by said worm, a shaft on which. the worm wheel is mounted, and a pinion on said shaft engaging each of the pinions on said pair of bending rolls.

13. In a. bending machine, thecombination with a plurality of bending rolls, one of said rolls being adjustable with respect to another, a worm wheel for adjusting each end of said adjustable roll,a worm engaging and driving each of said worm wheels, shafts extending longitudinally of the machine in alinement with each other and carrying said worms which engage the worm wheels, an electric motor having an armature shaft and worm arranged transversely of the machine, a worm wheel driven-by said Worm and having its axis in line with the axes of said longitudinally arranged worm shafts, and means for operatively connecting said, worm wheel with. said longitudinally arranged worm shafts.

In witness whereof, I have hereunto signed my name.

ALFRED TRQSCH.

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