US555641A

US555641A - Machinery

Info

Publication number: US555641A
Authority: US
Publication date: 1896-03-03
Anticipated expiration: 1913-03-03

Description

UNITED STATES PATENT CFFICE.

ALBERT H. DEAN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO TIIE WIRE GOODS COMPANY, OF SAME PLACE.

SWAGING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 555,641, dated March 3, 1896. Application 1116.1 May 2,1894. Renewed November 4,1895. Serial No. 567,958. (No model.)

To aZZ whom it may concern:

Be it known that I, ALBERT H. DEAN, a citizen of the United States, residing at Worcester, in the county of Worcester and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Swaging Machinery, of which the following is a specifi cation.

The object of my invention is to provide a machine in which metallic rods may be swaged.

The machine is one in which the rod while being swaged is turned while it receives a series of blows upon its surface between properly-constructed dies. In this respect it is to be distinguished from that class of swaging machinery in which the stock is not turned, but in which the swaging-dies are placed in a revolving head and act toward a common center.

In the drawings, Figure 1 is a plan view of the machine. Fig. 2 is afront view, inpartial section, showing the swaging-dies and the manner in which they are mounted and their relation to the other parts of the machine. Fig. 3 shows the means for connecting the two shafts of the machine, as will be more particularly explained hereinafter. Fig. 4 is a transverse sectional view through the line 4 4, Fig. 1. Fig. 5 is a rear view of the powercarriage, referred to hereinafter; and Fig. 6 is a detail view of the supporting device, referred to hereinafter.

In Fig. 1, Ais the bed of the machine, which may be mounted upon a table or upon suit able legs, as may be found most convenient. I is a pulley which receives power by means of a belt from the main shaft. The belt is shown at 2, Fig. 2.

3, Fig. l, is the main shaft of the machine, mounted in suitable stationary boxes 5 5 5 and carrying the eccentric 6, which actuates the swaging-die 7, mounted in the movable carriage 8,which has a reciprocating motion in the ways indicated by solid and dotted lines.

The die-carriage and eccentric are connected by the wrist-pin 9. (Shown in dotted lines, Fig. 1.) A front view of the die and die-carriage is shown in Fig. 2;

It will be noted that the shaft 3 is provided with a thread for part of its length and that it in detail in Fig. 4.)

passes through the power-carriage l0. (Shown This power-carriage is so constructed that by means of the lever 11 pressure may be brought to bear upon the nut 13, which is secured to the lever-arm by the screw 12. The thread of the nut conforms to the thread on the main shaft 3, so that when the lever 11, pivoted at 38, is pushed up the thread in the nut engages with the thread of the shaft, so that when the shaft is revolved the power-carriage is moved positively upon it.

When it is desired to move the power-carriage rapidly from one end of the shaft to the other, which occurs when a rod is taken out of the machine and a new one put in, the power-carriage and the shaft can be disconnected by depressing the lever 11, thus raising the nut 13 out of contact with the thread of shaft 3. The carriage may then be moved to and fro at pleasure, entirely independent of the shaft 3.

The power-carriage is mounted on a way 14,

and is prevented from any lateral movement by the downwardly-projecting sides 15,which embrace the way upon which the carriage moves, as shown in Fig. 4.

The shaft v3 at the end opposite the driving-wheel 1 is provided with a disk 16, upon the circumference of which is the wrist-pin 17, (shown partly in dotted lines,) upon which the rod 18 is loosely pivoted, while the opposite end of the rod 18 is connected in the usual manner with pawl and ratchet-wheel 19 20, whereby motion may be communicated from the main shaft 3 to what may be termed the secondary shaft 21. The secondary shaft 21 has a bearing at the end toward the ratchetwheel in the stationary box 22-, and at its opposite end in the box 23, which is mounted upon the movable chuck-carriage 24, which is capable of being moved to and fro in the ways 25. The secondary shaft 21 is provided with a chuck 26,which is capable of receiving the metal rod 27 to be swaged. (Shown in dotted lines.) The rod is secured and held in place by means of the screw 23, which acts upon a common split bushing, as shown. The secondary shaft 21 is provided through part of its length with a groove 29, while the ratchet-wheel 20 is provided with a key 30, which has a seat in the groove 29, so that the shaft 21 may freely slip through the ratchetwheel 20 and at the same time be rotated by it.

In order that the chuck-carriage 24: may not move too freely, it is provided with a friction device (shown in Fig. 4) consisting of two bolts 31 31, connected by a bridge 32, beneath the center of which a spring 33 has a bearing upon a proper base 54, so that the required friction may be secured upon the ways in which the carriage moves.

In Figs. 1 and 2 is shown a stop 34 attached to the bed of the machine, which may be moved in a line parallel with the main shaft 3 and seeurelyfixed at any desired point, and so placed that when the carriage 10 arrives at the desired point the lower end of lever 35 (shown in Fig. 5) will strike against the stop 34:. This will throw the hook end 36 of the lever 35 out of its normal position, in which it is held by the spring 46, thus releasing the end 37 of lever 11, (shown in Figs. 1 and 4,) which is pivoted at 38. The spiral spring 39 is then free to act and pulls down the lever 11, which throws the nut 13 out of contact with the thread on shaft 3. The progress of the power-carriage 10 may thus be automatically stopped at any desired point.

The carriage 10, which, for the sake of convenience, I have referred to as the powercarriage, is provided with a curved arm 40, which at its outer end presses against a projecting part 41 of the chuck-carriage 24 in such manner that as the power-carriage 10 travels along the shaft 3 it carries with it the chuck-carriage 24, the secondary shaft 29, and consequently the metal rod secured in the chuck and in process of being swaged.

The movable swaging-die is shown in section in Fig. 2, and it will be noted that its face is hollowed somewhat to conform to the shape of the rod to be reduced.

The movable carriage 8 which carries the die is also shown in Fig. 2, together with the ways in which it moves, formed in the bed of the machine.

The die 7 strikes upon a stationary fellow die of similar shape, 43, which is secured. to the bed of the machine by a screw 44.

It is evident that when the die 7 is withdrawn from contact with the rod which is being swaged the rod must be held in place; otherwise it would drop out of the groove in the die 43 and out of reach of the swaging-die. To effect this I provide a supporting device -15. (Shownin detail in Fig. (3.) I also inclicate its position in Fig. 1.. This supporting device is located between the swaging-dies, which it just clears, and the holding-chuck, and consists of an arm secured to a projection on the bed of the machine by the pin 47, on which it can oscillate. The arm is held in place and against the red by the spring 46, which is secured to the bed of the machine by a screw, as shown.

The rod to be swag-ed is placed in the groove across the face of the die 43, where it is held by the arm 45, which acts on the opposite side of the rod, one end of the rod being secured in the chuck 2G. The rod is thus held firmly in place until the process is completed.

Having described the details of my improved machine, I will proceed to describe its mode of operation.

The rod 27 is placed in proper position between the swaging-dies, Where it is held by the supporting-arm a5, and one end is cured in the chuck 26. Power is then applied to the driving-wheel 1, and thence imparted to the main shaft 3, which, through the reciproeating rod 18, imparts a rotary motion to the shaft 21. The power-carriage, which at the beginning of its journey is nearly in contact with the box 5, travels a little distance before the arm 40 comes in contact with the projecting elbow 41 upon the chuck-carriage 24, the result being that the rod being treated is turned upon its axis and evenly swagcd the width of the die around its entire eircumfer ence before longitudinal motion is imparted to the carriage 24, which then draws the rod 27 slowly along between the swaging-dies, while at the same time the rod has arotary motion, so that every part of the circumference of the rod is treated alike and an even surface is thus produced. The necessity for this arrangement is apparent upon a statement of the fact, for if the chuekcarriage were to move longitudinally as soon as rotary motion were imparted to the red the first end of the rod would receive a rough and uneven finish. The ratchet which turns the secondary shaft 29 is so timed that the secondary shaft, and consequently the rod which is being swaged, is turned while the movable reducing-die is returning after delivering a blow; but when the blow is delivered the rod remains stationary.

Theoretically the longitudinal movement of the secondary shaft 21 does not cease during the swaging operation; but, practically, of course, the rod must remain stationary while the blow is being struck, and does so, as there is sufficient spring in the arm i0 and the connections between the main shaft 3 and the secondary shaft 21 to permit of it.

\Vhen the swaging operation is completed the machine may be stopped by use of an ordinary clutch connection between pulley 1 and shaft 3, or by shipping the belt on the counter-shaft overhead, or in any other wellknown way, the swaged rod removed, another put in its place, and the operation repeated.

It will be observed that a metallic rod may be so treated as to have one or two enlarged heads of any desired length, with the intervening part of the rod swaged to any required size and for any required length.

Having described my invention, what I claim as new, and. desire to secure by Letters Patent, is-

1. In a swaging-machine the combination of a shaft, threaded for part of its length, and carrying an eccentric which actuates a swaging-die, with a carriage adapted to engage with said thread, a second shaft adaptedto hold a rod, and intermediate mechanism, whereby rotary and longitudinal motion may be imparted to said last-named shaft, substantially as shown and described.

2. In a swaging-machine, the combination of a shaft, threaded for part of its length, and carrying an eccentric, which actuates a swaging-die, with a carriage adapted to engage with said thread, a second shaft adapted to hold a rod, and intermediate mechanism