DE16602C - Innovation in rolling mills for rolling wrought iron railroad car wheels - Google Patents

Description

ί <ΘΜ (WIlUAtV Öa-ύ}

I P-- P. * ^J. ίι P

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 49: Mechanical metalworking.

'Reiche refrain from January 18, 1881.

Fig. Ι the beüi
the vertical * ^!
Grundrifs with i
and 0

The drawings represent the cross-section, FIG. 2 the middle upper roller, the general view of the rolling mill.
consists essentially of α and b, Fig. i, on which the c and d sit, which the rollers are arranged in an inclined position to one another and can be moved closer to one another or removed from one another as required during the course. Since the rollers must exert considerable pressure on the piece of iron to be rolled, a double back gear with significant transmission is arranged for the purpose of the roller position, which, Fig. 1, 2 and 3, consists of the handwheel e, the shaft / with worm, the worm wheel g, the shaft h, the gear unit i, the gear wheel /, the shaft k, the eccentrics with rods / and P, the clamps m and m ¹ as well as the levers η and n ^x with the tie rods and the clamps / and / ¹ , and allows the wrought-iron bearing supports q and q ^x to move towards or away from one another in such a way that when the upper shaft is raised, the lower shaft is simultaneously lowered, and vice versa. In this way the fairly considerable weights balance each other out, and the tension and pressure on the shaft k also keep each other in balance. At the ends, the bearing supports q and q ^{l are provided} with crosshead-like carriages χ and x ¹ , Fig. 1, which have their guides in the arcuate carriages ζ and z ^{1 of} the uprights A and Ä ¹ , so that the shafts move sideways the rollers is avoided.

In addition, the bearing supports q and q ^{l are} still connected to wrought iron rods B and B ¹ , FIGS. Ι and 2, which serve as supports for the bearings D and D ¹ for the roller shafts α and b and are designed in the form of bearings at one end and with the latter comprise the operating shafts C and C ¹ , so that the precise meshing of the angular gears C ² and C ^{3 is} ensured, which transmit the rotating movement from the operating shafts C and C ¹ to the roller shafts α and b .

The lower operating shaft is set in motion by the steam engine and is driven by the powerful gear wheels E and 2? ¹ connected to the upper shaft; the waves therefore rotate in the opposite direction, as required by the action of the rollers.

Furthermore, a fixed lathe bed F is attached between the two uprights A and A ¹ , which is provided with a bolster G in order to leave space for the lower bearing bracket q of the lower roller shaft. This lathe bed serves a support H as a path on which it can be moved back and forth by means of the spindle I, the worm wheel J, the worm K, the stationary shaft L and the handwheel M , and with a recess NNNN, Fig. 2, is provided so that the lower roller reach BEZW. can come into action. In addition, two pins O and P are fastened in the support. On O there is a rotatable roller Q, which serves as a third roller and is provided with the screwed-in caliber for the flange of the wheel

Claims (1)

is, while the pin P is intended to receive the piece of iron to be machined. The manufacturing process is now as follows: First, the weight of a wheel is determined as precisely as possible by calculation according to the ordered dimensions, the burn-off that takes place in the welding furnace is added and then packages of this weight are produced. Brought up to the heat of the tail in the welding furnace, these are placed under a steam hammer of sufficient weight to achieve a good welding together of the individual plates of the package, in which after welding by means of an attached dome through the steam hammer a hole of the diameter of the pin P is in the middle is driven. When this happens, the perforated packet is placed on a longer mandrel, the can serve as a handle for two workers and then grind to some extent with the steam hammer Forged round, after which the package is put back in the oven. In this round forging, care must be taken that the height or thickness of the packet is at least equal to the length of the hub of the finished wheel, and it will initially depend on the skill of the workers, whether the work described so far is done with one or two heat can, which, however, is of no great importance. The process described so far is also used to manufacture steel tires for railway wheels, and it is the same here only for a better understanding of the present machine has been described. The package, heated in the welding furnace to the right amount of tail heat, a round cleaning iron approx. 20 cm high and approx. 47 cm in diameter with a hole 8 cm in diameter in the middle, is now placed on the pin P of the previously screwed back support and this then screwed as far as possible against the roller disks set apart from one another, as the hub of the pin P allows, without hitting the lower roller disk; The rollers, which can always be in motion, are then put together so far that they grasp the hot piece of iron, causing it to rotate around the pin P and stretch from the center to the outer edge; Having arrived at this, the support is moved in the opposite direction, while at the same time tightening the rollers, and so on, until, through this continuous stretching outwards, the diameter of the piece of iron has become so large that it reaches the third roller Q , which also rotates through friction is offset, whereby the finishing rolling of the flange then takes place, while any excess of iron between the lower edge of the third roller Q and the rear edge of the lower roller disk is squeezed out as a burr, which is either cut away with the chisel when the wheel is in rough Condition is to be sold, or in other cases it can be turned away on the lathe, since the wheel has to come on the lathe to bore out the hub for the axle. When the wheel is then completely rolled in the manner explained, the rollers are set apart from one another so that the support can be screwed back, so that the finished wheel can be removed from the pin P and a new iron plaster can be put on, which then immediately starts the same manipulation again can begin. If the flange of such a wheel is so worn that it can no longer be used, it can be turned away and the wheel, fitted with an ordinary wheel tire, can be used again and again; Nothing stands in the way of rolling bare wheel hulls, i.e. wheels without flange, in which case only the third roller Q needs to be replaced by another one in which no caliber is screwed in for the flange, if the railways are special Steel tires should be preferred over the wheels. Patenτ claim: The device shown by the drawing of the roll position of a rolling mill intended for the production of forged iron disc wheels, namely the eccentrics / and / 'and the cranks η and n ¹ , which are supported by corresponding rods with the support bars q and q ¹ for the neck bearings, which are guided in circular arcs of the roller shafts α and b are connected to move the rollers c and d against each other when they are adjusted. For this purpose 2 sheets of drawings.