US1055962A - Forging-press. - Google Patents

Description

W. WITK'OWSKI.

FORGING PRESS 'ABILIOJ JIIOIEY FILED APR.15, 1911.

Patented Mar. 11, 1913.

3 SHEETS-SHEET 1.

m z'ces s as COLUMBIA" PLANOGRAPH COHWASHINGTON, D. c.

W. WITKOWSKIJ FORGING PRESS.

APPLICATION FILED APR. 15, 1911.

1,055,962. 7 Patented Mar. 11, 1913.

3 SHIBETSSHEET 3.

1 I I z 4 W6$aeses I 7zg zz z iski COLUMBIA PLANOGRAPH c0., WASHINGTON, D. C

WLADYSLAW WITKOWSKI, OF PASIECZNA, NEAR NADWORNA, AUSTRIA-HUNGARY.

FORGING-PRESS.

Specification of Letters Patent.

Patented Mar. 11, 1913.

Application filed. April 15, 1911. Serial No. 621,320.

To all whom it may concern Be it known that I, WLADYsLAw VVITKOW- SKI, a subject of the Emperor of Austria- Hungary, residing at Pasieczna, near Nadworna, in Galicia, Austria-Hungary, have invented certain new and useful Improvements in Forging-Presses, of which the following is a specification.

The object of this invention is a forging press in. which the shaft from which the toand-fro-motion of the press-head is derived is being driven alternately at two different numbers of revolutions and viz., during the last part of the working stroke of the presshead and the first part of its idle stroke it is driven at the higher number of revolutions whereas during the last part of the idle stroke and the first part of the working stroke of the same it is driven at the lower number of revolutions. This method of working has the advantage that the press dies are driven into the red-hot iron with rapidity, whereby their wear and tear is considerably diminished. Furthermore the time during which the iron possesses the proper temperature is better utilized and the blanks are less liable to break than in the case of presses working with uniform low speed. During the part of the motion accomplished at the lower number of revolutions the operator has sufficient time to remove the iron from the matrix and to allow the latter to cool without stopping the driving mechanisn'i for this purpose. The change of the rate of speed is effected in the following manner: During the upward or idle stroke of the press-head an abutment affixed to the press-head at a certain point of the stroke is caused to displace, by an intermediate mechanism, a coupling in such a manner as to connect the presshead to the gear of the lower number of revolutions, while, during the following working-stroke of the press-head, a second abutment connected to the same will cause the coupling to connect the press-head to the gear of the higher number of revolutions. Furthermore, the press is provided with an automatically working ejecting device which removes the finished blank from the matrix and simultaneously performs the cleaning of the latter from the iron cinders and other waste materials accumulated in the matrix.

The accompanying drawings show a form of execution of the object of the invention.

Figure 1 is a side elevation and Fig. 2

is a section through the anvil block showing the ejecting device. Fig. 6 is a sectional view of the locking device associated with the clutch operating mechanism.

On the main shaft 1 are loosely fitted two pulleys 2 and 3; the pulley 2 preferably mounted as a fly-wheel is driven at the higher speed and the other pulley 3 at the lower speed. Now the main shaft can be coupled with the one or with the other of these pulleys or be disconnected from both of them so as not to be driven at all. For this purpose upon the shaft 1 are keyed two sets of crossed double arms or crosses 4t and 5 between the arms of which are arranged two clamping jaws G and 7 and 8 and 9 respectively (Figs. 2 and 3) capable of a radial but not of an axial motion, as also a pivoted three- armed lever 10 and 11 respectively. The ends of two of the arms of this lever engage corresponding apertures of the clamping jaws in such a manner that by an appropriate oscillation of the said lever, the interior and the exterior clamping jaws can be brought nearer together to or wider apart from each other. Between the interior and the exterior clamping jaws of each of the crosses reaches a ring- shaped flange 12 or 13 respectively con nected to each of the corres1: onding pulleys. If new the clamping jaws of one of the crosses are brought nearer together the shaft- 1 is coupled with the pulley corresponding to this cross. In order to control the proper displacement of the clamping jaws a coupling box 14 is loosely fitted between the two crosses so as to be capable of a lateral motion on the shaft 1. This coupling box is provided on each side with four claws 15 and 16 respectively, projecting between the two parts of each arm of the corresponding cross so that the coupling-box will always be carried along with the pulley which, for the time being, is in operation. In the recesses provided in the coupling boxes en gage the third arm-ends of the levers 10 and 11. If now, the coupling box will be moved for instance to the left the clamping jaws of the cross 4 are pressed against the flange 12 of the pulley 2 and thus the shaft 1 is coupled with this pulley 2, while pulley 3 is running idle. If the coupling box is moved far enough to the right, the contrary relation will occur. If finally the coupling box occupies its middle position the shaft 1 is out of engagement with either of the pulleys. On the shaft 1 is further keyed a toothed wheel 17 meshing with another toothed wheel 19 mounted upon a shaft 18. This shaft 18 carries at its ends two cranks 20 connected by rods 21 with cranks 22 mounted upon the crank shaft 24 that has its bearings in the anvil block 23. The boss of each crank 2 is provided with an extension which carries a journal 25 connected by a rod 26 to a journal 23 affixed to the press-head 27. Thus, if the main shaft 1 is rotated, the press-head guided vertically between pillars 29 will execute an up and down motion.

A ring 30 actuated by two one-armed levers 32 mounted on a rock shaft 31 serves for shifting the coupling box 14. At the front side of the anvil block a three-armed lever 33 is affixed to the end of the shaft 31. Two of its arm-ends are made in the shape of pedals 34 and 35; the third arm end 36 is provided with a longitudinal slot in which a locking pawl 37 is guided that interchangeably engages the three notches 38, 39, provided in a disk segment 41 that is affixed upon the anvil block. Thus the three-armed lever 33 and consequently also the coupling box 14 can be adjusted in three different positions. The notch 38 corresponds to that position of the coupling box in which the shaft 1 is coupled with the pulley 2 (rapid motion), the notch 39 to that position where the two pulleys 2 and 3 are running idle, and the notch 40 corresponds to the position of the coupling box in which shaft 1 is cou pled with the pulley 3 (slow motion).

Upon each of the pedals 34 and 35 a twoarmed lever 42 and 43 respectively is pivoted. The pawl 37 is constantly pressed inwardly by a spring 64 and carries an extension 44 upon the end of which act the ends of the levers 42 and 43. If now for instance the left hand end of lever 42 is pressed downward, the pawl 37 is first pushed out of the notch 40 and thus the threear1ned lever 33 is disengaged and then the pedal 34 of this lever can be turned downward.

In order that the changing from one speed of the press to the other rate of speed maybe effected automatically the following means are provided: To the pillars 29 of the press are pivoted levers 45 and 46 respectively that are connected by means of the rods 47 and 48 respectively to levers 49. and 50 respectively pivoted to the anvil block, the free ends of the said levers 49 and 50 cooperating with those of levers 42 and 43 re spectively. Upon the levers 45 and 46 are pivoted catches 51 and 52 respectively. A

pin 53 on the lever 45 prevents the catch 51 from moving downward and a pin 54 on the lever 46 prevents the catch 52 from moving upward; the catch 51, being disposed above pin 53, normally rests thereon by gravity, while the catch 52, which is disposed beneath pin 54, is held against the latter by a spring 65 or some other suitable device. On the catches 51 and 52 act pins 55 and 56 respectively arranged on the press-head in such a manner that during the working stroke of the press-head the pin 55 will actuate the lever 45 to which the catch 51 is connected and during the idle stroke of the press-head the pin 56 actuates lever 46 which carries the catch 52.

Assuming that the parts are in the position depicted in Fig. 4, the change-speed device will work as follows :As the presshead moves downward, its pins and 56 will respectively engage the catches 51 and 52, carried by levers 45 and 46, the pressure thus exerted upon catch 51 being transmitted directly against pin 53, whereupon the inner or pin end of lever 45 will be depressed and the outer end raised. Catch 52, on the other hand, will be merely swung downwardly, since it is disposed below pin 54, and will produce no movement of lever 46. The above-described swinging movement of lever 45 serves to rock lever 49 in a clockwise direction, owing to the connection of said levers to rod 47, the downward movement of the inner arm of lever 49 bringing its free end into contact with the adjacent end of the pawl-operating lever 42, which latter is then depressed and, in consequence, disengages pawl 37 from notch 40. As this movement of lever 49 is continued, pedal lever 34 is depressed, thus rocking shaft 31 countercloclnvise and coupling the left-hand pulley 2 to the drive shaft, and when pin 55 passes beyond catch 51, the pressure upon lever 45 is removed, and the levers 45 and 49 return to normal or horizontal position, this return movement being due to the counterbalancing action of said levers and the connecting rod 47. hen the pressure upon lever 42 is removed in this way, pawl 37, which is then opposite notch 38, will be forced thereinto by spring 64, thus locking lever 33 in its new position. Catch 52 is automatically returned to normal position by means of spring 65, on being disengaged by pin 56. The action just described is reversed when the crosshead ascends, the lever 45 being unaffected by the idle movement of catch 51, consequent upon its engagement by pin 55, while the lever 46 is rocked countercloclnvise on its pivot when pin 56 engages catch 52. During the movement of lever 46, rod 48 is lowered and, in turn, depresses lever 50, whereupon lever 43 is actuated to disengage pawl 37 from notch 38 and, subsequently, to rock shaft 31 clockwise to its original position, for coupling the right-hand pulley 3 to the drive shaft.

The ejecting device shown in Fig. 5 has the following arrangement: In a recess provided in the surface of the anvil block is arranged a vertically displaceable pin 57 above which the blank pressed into the matrix is lying during the working of the press. Below this pin 57 a rod 59 pivoted to a onearmed lever 58 is guided in the anvil block. The lever 58 is pivoted to the hinge support 60 so as to be capable of oscillation and rests with its free end on the crank shaft 24 provided on the corresponding part of its length with a cam 61.. Shortly after the press-head has started on its upward stroke this cam 61 by the intermediate action of lever 58 and rod 59 pushes the pin 57 upward and thus removes the iron from the matrix.

I claim as my invention 1. In a forging press, the combination, with a drive shaft, a reciprocating part, and connections between said reciprocating part and said shaft for operating the former from the latter; of a pair of driving elements loose on said shaft and revoluble at different speeds; a clutch element keyed on said shaft for interchangeable engagement with said driving element; and means engaging said clutch element alternately with said driving elements during each complete movement of said reciprocating part.

2. In a forging press, the combination, with a drive shaft, a reciprocating part, and connections between said reciprocating part and said shaft for operating the former from the latter; of a pair of driving elements loose on said shaft and revoluble at different speeds; a clutch element keyed on said shaft for interchangeable engagement with said driving element; and means operated by the reciprocating part for engaging said clutch element alternately with said driving elements during each complete movement of said reciprocating part.

3. In a forging press, the combination, with a drive shaft, a reciprocating part, and connections between said reciprocating part and said drive shaft for operating the former from the latter; of a pair of driving elements loose on said shaft and revoluble at different speeds; a clutch element keyed on said shaft for interchangeable engage,

ment with said driving elements; a rocking member connected with said clutch element for shifting the same; means for rocking said member in one direction during the working stroke of said reciprocating part; and additional means for rocking said member in the opposite direction during the idle stroke of said reciprocating part.

4. In a forging press, the combination, with a drive shaft, a reciprocating part, and connections between said reciprocating part and said shaft for operating the former from the latter; of a pair of driving elements loose on said shaft and revoluble at different speeds; a clutch element keyed on said shaft for interchangeable engagement with said driving elements; a rocking member connected with said clutch element for shifting the same; means operated by said reciprocating part for rocking said member in one direction during the working stroke of said reciprocating part; and additional means operated by said reciprocating part for rocking said member in the opposite direction during the idle stroke of said reciprocating part.

5. In a forging press, the combination, with a drive shaft, a reciprocating part, and connections between said reciprocating part and said shaft for operating the former from the latter; of a clutch mechanism associated with said shaft for controlling the operation thereof; an operating member for said mechanism; means operated by said reciprocating part during its movement in one direction for actuating said operating member; and additional means operated by said reciprocating part during the movement thereof in the opposite direction for actuating said operating member.

6. In a forging press, the combination, with a drive shaft, a reciprocating part, and connections between said reciprocating part and said shaft for operating the former from the latter; of a clutch mechanism associated with said shaft for controlling the operation thereof; a rocking operating member for said mechanism provided with a pair of opposed arms; and separate lever systems operatively associated with said reciprocating partand arranged to engage the adjacent arms on said operating member during the movements of the reciprocating part in opposite directions, for rocking said operating member alternately in opposite directions.

7. In a forging press, the combination, with a drive shaft, an anvil and a reciproeating part cooperating therewith, and connections between said reciprocating part and said shaft for operating the former from the latter; of a clutch mechanism associated with said shaft for controlling the operation thereof; a rocking operating member for said mechanism provided with a pair of opposed arms; a. pair of levers pivoted to said anvil and arranged to engage the adjacent arms on said operating member, for rocking the latter alternately in opposite directions; and separate means operated by said reciprocating part during its movement in opposite directions for rocking the adjacent levers.

8. In a forging press, the combination With an anvil, a pair of pillars adjacent thereto, and a reciprocating part cooperating with the anvil; of a drive shaft; connections between said reciprocating part and said shaft for operating the former from the latter; a clutch mechanism assosecond-named levers during the movements of said reciprocating part in opposite directio-ns.

9. In a forging press, the combination, with a drive shaft, a reciprocating part, and connections between said reciprocating partand said shaft for operating the former from the latter; of a clutch mechanism for controlling the operation of said shaft; a rocking operating member for said mechanism; means for normally locking said member in adjusted position; and means operated by said reciprocating part for unlocking said member and actuating the same.

10. In a forging press, the combination, with a drive shaft, a reciprocating part, and connections between said reciprocating part and said shaft for operating the former from the latter; of a clutch mechanism for controlling the operation of said shaft; a rocking operating member for said mechanism provided with a pair ,of opposed arms; a locking member carried by said operating member; a notched member with which said locking member is normally engaged, for retaining said operating member in adjusted position; and means operated by said reciprocating part for disengaging said locking member from said notched member and for actuating said operating member.

11. In a forging press, the combination, with a drive shaft, a reciprocating part, and connections between said reciprocating part and said shaft for operating the former, from the latter; of a clutch mechanism for controlling the operation of said shaft; a

rocking operating member for said mechanism provided with a pair of opposed arms; a locking member carried by said operating member; a notched member with which said locking member is normally engaged, for retaining said operating member in adjusted position; a lever pivoted to each of said arms and arranged to engage said locking member; and means operated by said reciprocating part during its movements in opposite directions for alternately actuating the adjacent levers, to periodically release said locking member and rock said operating member.

12. In a forging press, the combination, with a drive shaft, a reciprocating part, and connections between said reciprocating part and said shaft for operating the former from the latter; of a pair of driving elements loose on said shaft and revoluble at different speeds; a clutchielement keyed on said shaft for interchangeable engagement with said driving elements; and mechanism for automatically engaging said clutch element with one of said driving elements during the movement of the reciprocating part in one direction and with the other driving element during the moving of said reciprocating part in the opposite direction.

13. In a forging press, the combination, with an anvil provided with a matrix, a reciprocating part cooperating with said anvil, a drive shaft, and connections between said reciprocating part and said shaft for operating the former from the latter; of a pair of driving elements loose on said shaft and revoluble at different saeeds; a clutch element keyed on said shaft for interchangeable engagement with said driving elements; means for automatically engaging said clutch element alternately with said driving elements during each complete movement of said reciprocating part; and means for automatically ejecting the work from said matrix during the movement of said reciprocating part in one direction.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

IVLADYSLAIV VI'IKOV SKI. lVitnesses:

Josnr RUBAsoH, AUGUST F UGGER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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