US655719A

US655719A - Apparatus for handling forgings.

Info

Publication number: US655719A
Application number: US2304299A
Authority: US
Inventors: John Lanz
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-02-25
Filing date: 1899-02-25
Publication date: 1900-08-14
Anticipated expiration: 1917-08-14

Description

No. 655,7I9 Patented Aug. I4, |900.

J LANZ APPARATUS FII HANDLING FURGINGS. (Application led. Feb. 25, 1899. Renewed July 9, 1900.)

(No Model.)

' Patented Aug. I4, 1900.A

J. LANZ.

APPARATUS FOR HANDLING FURGINGS.

(Afrp'caton filed Feb. 25, 1899. Renewed July 9, 1990.) (No Model.) 4 Sheets-Sheet 2` mz gums mns co. vuomimm, msnmuron, n4 p.

Patented Aug. I4, i900.

No. 655,7I9.

J. LANZ.

APPARATUS FOR HANDLING FORGINGS. (Application tiled Feb. 25, 1899. Renewed July 9, 1900.)

(Nn Model.) l 4 Sheets-Sheet 3.

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Patented A'ug. I4, |900.

J. LANZ. APPARATUS'FOR HANDLING FORGINGS.

(Application led Feb. 25, 1899. Renewed July 9, i900.)

(No Model.)

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THE NDRRIS PETERS CO, PHOTO-LITRO.. WASHINGTON, D. CV

JonN LANZ, on rr'rrsnune, rnNNsYLvANIA.V

APPARATUS FOR HANDLING FoRGlNes.

SPECIFICATION forming part of Letters :Patent N0. 655,719, dated August 14, 190C. Application filed February Z5, 1899. Renewed July 9, 1900. Serial No. 23,042. iNo model.)

T0 all whom, t may concern:

Be it known that l, JOHN LANZ, a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Apparatus for Handling Forgings; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to apparatus for handling forgings, axles, tbc.

In an application filed by me onthe Zth day lof April, 1897, Serial No. 633,631, there is set forth a method of forging or swaging in which a hot bar of metal is squeezed or compressed on two of its opposite sides into blank sections and a swell or protuberance produced on its free sides, said bar being then rolled to reduce said swells or protuberances, and finally cutting and finishing the blank sections to the desired form. rlhe above method is applicable to the manufacture of axles, connecting-rods, armor-plate bolts, and other forgings, and the present invention relates to apparatus for handling the hot axles or other forgings after the blanks have been formed in this manner.

The object of my invention is to provide a form of apparatus by means of which the axle-blanks when fed thereto are grasped and acted on by the apparatus without the use of cranes, tongs, tbc., further making the handling easier and more rapid on the part of the operator,and discharged from the machine in finished forging.

My invention comprises, generally stated, suitable forming or squeezing dies adapted to act on two axles at the same time, one axle by the first operation of the dies being forged for the greater portion of its length and the other axle being forged for the opposite greater portion of its length, and means for transferring the axleforgings so that when the dies are again operated said partly-form ed axles will have exchanged positions and the portions not finished 4by the first operation will beproperly acted on and finished.

To enable others skilled in the ar-t to make and use my invention, I will describe the same more fully, referring to the accompanying drawings, in which- Figure 1 is a side elevation of my improved apparatus. Fig. 2 is an end view thereof.` Fig. 3 is a plan view, partly in section. Fig. l1 is a detail view of one of the clamping-arms. Figs. 5 is a longitudinal section of the device for throwing the clampingarms into engage ment with the ends of the blank. Fig. 6 is a cross-section on the line 6 6, Fig. 5. Fig. 7 is a detail view of the means for bringing the clamping device into the proper position for grasping the blanks. Fig. 8 is a detail view of the gage or stop regulating the distance to which the blank may be moved in feeding it to the apparatus. Fig. 9 is a View, partly in section, of the shears for cutting blanks and stamping notches in the ends thereof. Fig. 10 is a front View of same. Fig. 1l is a plan view of the axle-blank. Fig. 12 is a side View, partly in section. Fig. 13 is a view of the nished axle. Figs. 14c and 15 are views ofa partly-finished blank.

Like reference characters indicate like parts in each of the figures.

The numeral 5 designates a suitable bed for the hydraulic press, which carries the stationary die or anvil 6, above which is arranged, in proper alinement therewith, the movable die 7, held by the die-head 8, which is carried by the guides 9, moving in guideways 10 in the bed 5. These guides extend through the bed and are connected to the cross-head 1l, which is forced downward by means of the plunger 12, moving in the hydraulic cylinder l3,which is formed in and made part of the bed 5.

The movable die 7 is raised by means of two smaller cylinders, onel of which is shown in Fig. 1 and designated by the numeral 14.. The piston-rod l5, acting in this cylinder, lifts the cross-head ll by means of the connecting- "links 16, which are connected to the shaft 17 at the upper end of the piston-rod 15. The dies 6 and 7 are so arranged that two axles may be operated upon at the same time with one stroke, the die-seat 18 acting upon one end and a greater portion ofthe length ofthe axle-blank, while the die-seat 19 at the same time is acting upon the opposite portion of another axle-blank, the axles being completed by transferring the axle-forging from die-seat 18 to die-seat- 19 and that from die-seat 19 to 18 in the manner hereinafter set forth. The blank from which the axle is to be formed is IOO y the hollow shaft or motive cylinder 24, which shaft is supported on rollers 25, which have their bearings on the hangers 26, said hangers being pivotally connected at 27 to the frame of the machine and provided with the weights 26a, which act to counterbalance said hangers and hold arms at rest or make pivots center of gravity. As there are two sets of arms 22 acting at the same time independently upon two different axles, I will only proceed to describe one of them, as each set is alike and is operated in the same manner. The arms 22 are also supported at about their centers by the hanger 28, which is secured to the end of the lever 29. The hangers 2G and 2S are made of such proportional length that when said hangers swing in the handling of the forging said forging will move substantially in a horizontal plane, or the forging will even be in a lower position when the hangers are at an angle to their vertical position than when in their vertical position. By-this arrangement the forging will remain at the position it has been swung to by the hangers. This lever 29 is fulcrumed at 30, the opposite end of this lever being connected to the piston-rod 3l of the steam or hydraulic cylinder 32. The hanger 28is connected to the arm 22 by means of the clevis 33 and is also connected to the lever 29 by the elevis 34. This is for the purpose o-f givingit substantially universal movement.

The hollow shaft 24, heretofore referred to, to lwhich the arms 22 are attached, is formed in two parts, one of said parts being enlarged near the center of the machine to form the hydraulic cylinder 35, the other part forming a piston-head 36, which is splined and operates within said cylinder 35. The outer ends of these hollow shafts 24 are connected by suitable hose or other fiexible connections to a valve, (not shown,) through which the fluid is admitted to operate said cylinder 35 and' of the laxle-blanks, as will more fully hereinafter appear.

When it is desired to lift the blanks from the rollers 2O to place them in the die-seats, the arms 22 are swung backward by the operator until the lugs 39 come into alinement with the notches or indentations in the ends of said axle-blanks, and the arms are then drawn together by means of hydraulic pressure in the cylinder 35, so that the lugs 39 enter into said notches or depressions in the ends of the axle-blanks, and the faces 40 of the shanks 38 grip the blanks firmly between them. The cylinder 32 is then operated to lift the hanger through the lever 29, and the axle-blank is thus lifted above the plane of the anvil 6 and is swung over one of the dieseats by the hand of the operator, when the pressure in the cylinder 32 is released and the blank is allowed to drop into the die-seat. In the same manner a blank is placed in the other die-seat by means of the other set of arms.

In the operationl of forging the axle it is necessary to turn the blankafter each stroke or succession of strokes in order to forge the proper rotundity on the axle, and to accomplish this so same can be done easily by the operator the shaft 38 is mounted in its bearings 37 by means of the antifriction balls or rollers 4l. The shaft 38 is engaged at its outerend,formingashoulder33. Th'isshoulder acts as a cone, which bears against the balls 4l and is held in place by means of the jam-nuts 42. The handle-bar 44 has a square eye in the center thereof, adapted to engage with the square end of this shaft, and said bar is grasped by the operator when he desires to turn the blank.

As it is necessary to employ 'two arms to pick up each. axle-blank and as it requires but one operator for each blank, it is necessary to have the lugs 39 at the opposite end of the machine from where the operator stands come into proper alinement with the indentations in the axle-blank automatically. To accomplish this, the outer end of'the shaft 38 has a flattened oblong lug 45 with curved faces, against which the spring 46 is compressed, so that this shaft will be automatically turned into proper position for grasping another blank immediately after the completed axle has been released therefrom.

When the axle-blank is run in upon the rollers 20, it is necessary to provide a stop to prevent-it from going too far. To provide for this, a weighted arm 47 is pivoted to the anvil G at 48. This arm is forced down out of the way by contacting with the outer end of the shaft 38 when it comes into position to drop the finished axle. When a new blank has been received by the carrying device and has been lifted to the dies, this arm is raised into proper position by means of the weight 49, so that a blank coming in upon the rollers 2O will not go beyond the proper position.

I have referred to notches or depressions in the ends of the axle-blank, with which the lugs 39 on the ends of the shafts 38 ofthe arms 22 are adapted to engage, and I will now describe how these notches or depressions are formed. It is preferred to make the axle- IOO IIO

blanks in long lengths, so that a number may be formed from one continuous bar in the manner set forth in my application for patent hereinbefore, referred to. Where the method involved in that application is followed, the blank when cut will have the shape represented in Figs. 11 and 12, the top and bottom of said blank being flat. The bar from which the blanks are to be cutis carried under the upper shear-knife, resting upon the lower bed U. The crop end formed in the squeezers, giving to the blank its proper shape, is first sheared from the bar, and when this crop end is sheared off the upper knife T in shearing said crop end descends far enough to stamp the die or punch T into the upper face of the end of the bar, while the punch U3 on the lower knife is stamped into the lower face of the bar to form an indentation therein. This is caused by the force of the descent of the upper die with the bar resting upon the punch U3. In this manner in cutting off the crop end indentations 'i6 are formed at the end of said bar upon its upper and lower faces. The crop end having been sheared off and the indentations formed as described, the bar is then fed into the shears the length of the blank section, whereupon said upper knife T again descends, and in its stroke the blank sheared off is forced by said upper knife T down onto the punch U2. The pressure of the upper knife in cutting off forces or stamps the punch into the axle-blank to form an indentation on its lower face, while the projection T2 of the knife T stamps an indentation on the upper face. In this manner the axle-blank is provided at each end with the indentations i6. In cutting off this blank from the bar like indentations are formed, in the manner hereinbefore described, on the end of the bar which is to form the next axle-blank. As the axle-blanks are cut from the bar they are carried away and introduced into a suitable continuous heating-furnace in order to retain their temperature in case of delay or to raise them to the proper temperature for bringing them to their finished shape. The blanks when properly heated are then fed by a suitable apparatus to the rollers 20, said axles being deposited within the angular grooves 2l of said rollers. These rollers thus support the axleblanks at an oblique angle. The blanks are carried onto said rollers until their forward ends strike the stops 47. The swinging arms 22 are then swung back in position to bring the shafts 38 in alinement with the axle-blanks, so that the lugs 39 on the ends of said shafts can enter the indentations s formed in the ends of the axle-blanks. The lowering of the arms 22 to effect this result will force the stops 47 out of the way in order to permit the lugs 39 on the ends of the shafts 38 adjacent thereto to engage with the indentations on the inner ends of said blanks. This move- Yment of the arms is effected by suitable levers which operate the pistonsin the cylinders 32. The lugs39 on the shafts 38 having been brought into coincidence with the indentations of theaxle-blanks, the front and rear shafts or motiveA cylinders 38 of the arms 22 are then moved toward each other, so as to bring the lugs 39 into engagement with said indentations. This is accomplished by admitting water or steam to the cylinder 35, whereupon the hollow shaft 24 recedes within said cylinder 35 far enough to force the lugs 39 into the indentations in the ends of the axle-blank and holds the same securely therein. The axle blanks having been grasped in this manner by the arms 22, said arms are then swung over in such a position as to lower the axle-blanks into the die-

seats

18 and 19, said blanks being placed in said grooves edgewise. The movable die 7 is then operated to move down and up several strokes, that the greater part of the axleblank in the die-seat 18 may be acted on so as to forge that portion of the axle-blank so acted on by the dies toiinished shape, while the die-seat 19 acts upon the greater portion of the other axle-blank in the same manner. As the axles when forged have certain oifsets or shoulders, itis obvious that if it was attempted to forge the axle for its entire length in the die the contraction of the axle in cooling between dies during contact within the die would prevent its withdrawal therefrom, as the shoulders would act to lock the axle wit-hin the die-seat. While the axleblanks are in the dies, said blanks are turned by means of the handle-bar 44 in the end of the shaft 38. An operator stands at each end of the machine, and in this way each axle-blank is turned. By turning the handle-bar 44 the axle is brought into different positions of advantage within the dies in order to be properly forged. By this operation two axle-blanks have been shaped for the greater part of their length; but it is necessary now to forge the portion not nished by the above operation, which is done in the following manner:`After the axle blanks have been shaped for the greater part of their length the blank in the die 18 is swung or carried to the die-seat 19 and the blank in the die-seat 19 exchanged to the die-seat 18. This is accomplished by swinging the arms 22 in such positions as to effect this result, whereupon the foregoing operation is again repeated until the ends of the axle-blanks not iinished by the first forging operation are brought to the finished forging. The axle when finished will be in the form shown in Fig. 13. When the axles are forged, they are transferred to the grooves 23 of the rollers 20, whereupon the piston 36 in the cylinder 35 is operated to release the shafts 38 of the arms 22 from engagement with the finished Power may then be applied to drive axles.

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the rollers 20 in the proper direction, when the axles will be carried away and another set of blanks be carried onto the rollers 20.

By the above form of apparatus I provide a machine for the handling of forgings and axles in which the blanks fed thereto are automatically grasped, carried, and easily handled. The operator by suitable lever mechanism quickly transfers and manages the blanks from the rollers to the dies and changes the positions of the blanks from one die-groove to the other, as described.

No claim is made in this application for the method of preparing and handling the forged blanks by pressing notches or indentations in the ends of the blanks during shearing thereof and grasping and centering the blanks by such indentations and forging the same to shape when so centered, as the same forms the subject-matter of a separate application for patent filed by me on the 29th day of September, 1899, Serial No. 732,014.

What I claim as my invention, and des-ire to secure by Letters Patent, is*

l. In apparatus for'handling forgings, the combination of suitable dies having a dieseat adapted to receive the blank, swinging arms adapted to engage the opposite ends of said blan1k,.said arms bei-ng arranged at right angles to said die-seat, and said swinging arms carrying mechanism for moving said arms horizontally toward each other, substantially as set forth.

2. In apparatus for handling forgings, the combination of suitable dies having a dieseat adapted to receive the blank, swinging 'z combination of suitable dies having a die-seat adapted to receive the blank, swinging arms, frotatable shafts on said arms, projections on @said shafts adapted to engage indentations at jthef ends of said blank, and a spring on one arms, rotatable shafts in said arms adapted to engage the oppositeend faces of said blank, and mechanism carried by said swinging arms for moving said arms toward each other, substantially as set forth.

3. In apparatus-for handling forgings, the

combination of suitable dies having adieseat adapted to receive the blank, swinging' arms adapted to engage the opposite end faces l combination' of dies having die-seats therein adapted to receive the blanks, one die-seat formed to shape one portion of a blank and the other die-seat formed to shape the oppo ,site portion of another blank, feeding-rollers at each side of said dies, and mechanism for of the blank, and atelescopic shaft carried by said swinging arms for moving said arms toward each other, substantially as set forth.

4. Inl apparatus for handling forgings, the

combination of suitable dies having a dieseat adapted to receive the blank, swinging arms adapted to engage the opposite end faces of the blank, a hollow telescopic shaft.

on which said arms are mounted, one section of said shaft having a piston-chamber therein, and the other section having a piston adapted to reciprocate in said chamber, substantially as set forth.

5. In apparatus for handling forgings, the' combination of suitable dies having die-seats adapted to-` receive the blanks, one die-seat zi savio 6. In apparatus for handling forgings, the combination of suitable dies having diefseats adapted to receive the blanks, one die-seat formed to shape one portion of a blank, the other die-seat formed to shape the opposite l portion of another blank, swinging arms adapted to engage theA ends of said blanks, and mechanism for raising and lowering said arms, substantially as set forth.

7. In apparatus for handling forgings, the combination of suitable dies having a die-seat adapted to receive the blank, swinging arms,

` rotatable shafts on said arms, projections' on said shafts adapted to engage indentationsat the ends of said blank, and mechanism for automatically turning one of said shafts to cause its projections to register with the indentations on the blank, substantially' as set forth.

8. In apparatus for handling forgings, the combination of suitable dies having a die-seat adapted to receive the blank, swinging arms, rotatable shafts on said arms, projections on said shafts adaptedl to engage indentations at the ends of said blank, and a spring on one 1 of saidarms engaging its shaft and ad-apted x to turn same, substantially as set forth.

9'. In apparatusv for handling forgings, the' combination of suitable dies having a die-seat adapted to receive the blank, swinging arms, rotatable shafts on said arms, projections on said shafts adapted to engage indentations at Athe ends of said blank, and a spring on one of said arms engaging an oblong lug o-nits' ishaft, substantially as set forth.

10. In apparatus for handling forgings, the

of said arms engaging an oblong lug on its 11. In apparatus for handling forgings, the

lifting said blanks from said rollers to the dies and from said dies back to said rollers, substantially as set forth.

12. In apparatus for handling forgings, the combination of dies having die-seats therein adapted to receive the blanks, one die-seat formed to shape one portion of a blank and the other die-seat formed to shape the opposite portion of another blank, feeding-rollers at each side of said dies, said feeding-rollers having conical portions, and mechanism for lifting said blanks from said rollers to the dies and from said dies back to said rollers, substantially' as set forth.

13. In apparatus for handling forgings, the

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lcombination of suitable dies having a die-seat hangers being Weighted, substantially as set adapted to receive the blank, a shafb,arms on forth.

said shaft adapted to engage the opposite Itestilnony whereof I, the said JOHN LANZ, ends of said blank, mechanism for moving have hereunto set my hand.

said arms toward each other, swinging rods JOHN LANZ. connected to said arms, mechanism for rais- Witnesses:

ing and lowering said rods, swinging hangers ROBT. D. TOTTEN,

supporting said shaft, the upper ends of said ROBERT C. TOTTEN.