DE84778C - - Google Patents

Description

"1

IMPERIAL

PATENT OFFICE.

The purpose of the present invention is to create hollow and solid bodies from one end ready to roll, to calibrate and in Qiierschnill to change, with the desired change in cross-section of the workpiece intermittently in the case of a short piece of it, and this treatment is carried out successively by one progresses to the other end, with planetary motion of the work rolls.

The working rollers or roller rollers move over the workpiece and roll on the same.

The roller axes are guided in a circular arc, i.e. they describe cylinders, cones or hyperboloids, whereby the roller peripheries only touch and process the workpiece over a short distance of their rotation. As a result of the circular movement of the work roll axes, the machining of the workpiece by the rolls is repeated in short intervals, at the same time the workpiece is advanced and the machining of the same progresses continuously or periodically from one end to the other. The work roll axes thus make a circular movement around a central axis with simultaneous rotation around their axis of rotation, the workpiece mainly makes a progressive movement, to which in most cases a rotary or vibrating movement around its axis is added.

The unwinding of the work rolls on the workpiece 'can make the progressive movement of the workpiece must be aligned in the same direction or in the same direction, so the roller peripherals can do that Either leave the workpiece at the thicker (unprocessed) area first and then after the stretch the thinner (already machined) side, or the rollers can touch the workpiece touch the thinner side first and move rolling towards the thicker side.

The axes of the work rolls are guided in a circular arc around a central axis. (The Axis of the propellant, in which the propulsive force is usually introduced.)

The working roller rollers are rotated about their axis during the circular movements of their axes about the central axis (the drive body axis) so that certain parts of the roller caliber meet certain parts of the workpiece. This rotation of the work rolls around their axes is best done by means of toothed rings on the same and a ring gear, on which the toothed rims roll around the central axis as the work rolls rotate and which is mounted concentrically to the drive body axis.

During this machining, the work rolls and the workpiece lead relative to one another a pilgrim step-like movement as in those described in Patents No. 58762 and No. 59052 protected procedures.

Fig. 1 to 13 of the drawings illustrate the method and the devices for rolling out solid and hollow bodies with planetary movement of the working rollers. . ■ ■

Fig ι. And 2 illustrate a rolling mill as an example, namely 1, Fig. 2 a longitudinal section through the drive body axes and the roll axes, Fig. Shows a section at right angles thereto to AB by · the gears of the lower drive body and the detected ring gear, in which to unroll the gears. Fig. 3 shows a section at right angles to Men floating body axes through the center of the work rolls.

Letter α in the figures illustrate the propellant body, b, the work rolls, c the axes of the work rolls, i.e. the toothed rings aiii 'the work roll axes of the lower driving body, c · the means of the Flantschen e ^l and the screw f mn stator fixed sprockets of, Line Treihkilrpers, in which the Zahnringc unroll d to the roller axes during rotation of the Arbeilswalzen. Ks is evident from the fact that these ring gears are concntrisch with the axis of the drive body a. Instead of connecting the ring gear e to the stand of the rolling mill, you can let it rest on the propulsion body a , but then prevent it from an arbitrary rotation so that it does not rotate when the propulsion body rotates. In this case the rollers can be raised or lowered, whereby the toothed ring always remains concentric, g shows the toothed rings on the working rollers of the upper drive bodies, /; the fixed ring gear belonging to the same. On the axes of the propulsion bodies sit the gears z, which make the movement of the two propulsion bodies uniform. In Fig. 3, k is a hollow workpiece which is machined on the mandrel m. Workpiece A "with mandrel m are advanced a little after each attack by the work rolls and ideally rotated by a right angle. The feed of the workpiece can be the same as or different from the feed of the mandrel, in the latter case the workpiece moves away from the mandrel during rolling withdraws or is postponed on the same.

The movement of the propellants can take place in the direction of the arrows n, the work rolls b moving in the direction of the arrows n ^l. The work rolls first touch the workpiece on the unmachined side and roll towards the already machined side. If all the movements of the drive bodies and work rolls are made in opposite directions, the work rolls first touch the workpiece on the part that has already been machined and roll off towards the unmachined end.

The movement of the workpiece and the mandrel usually takes place in the breaks between the attacks of the work rolls.

If the axes of the work rolls b are skewed against the axes of the drive bodies a (FIG. 4), the work rolls, when rolling on the workpiece, have the tendency to rotate the workpiece during processing. In this case, it is no longer necessary to rotate the workpiece in the intermediate pauses. Such axes of the work rolls, which are skewed to the central axis, describe hyperboloids when they rotate about the drive body axis.

If the axes of the work rolls are not set parallel to the central axis, not even skewed, but lets the axes of the work rolls and the propulsion body in any way intersecting a point, this is how the 'work roll aclise cones' describe.

The axes of the work rolls do not all need to be in the same position with respect to the Bring drive body axes, but can, for example, be a work roll axis with the propellant axis on one side, the other opposite work roll axes on the opposite side let cut.

Instead of one, e.g. B. the lower, propellant can be a deformation of the workpiece the abutment for the Form workpiece.

In FIGS. 3, 5 and 6, one work roll always engages on each side of the workpiece on the workpiece, which mutually form the abutment.

The position of the propulsion body axes relative to the horizontal plane can be arbitrary. In most In cases, both drift axes are moved in horizontal planes.

Fig. 5 shows a drive body with three embedded work rolls, Fig. 6 with those four embedded work rolls.

The number of work rolls embedded in each drive body can be 1, 2, 3, 4 and more. In most cases, two work rolls can be attacked on opposite sides of the workpiece at the same time. B. three, or, as can be seen from Fig. -J and 8, arrange four propellers so that the work rolls on them machine the workpiece from four sides (or. With χ propellers from χ sides) at the same place at the same time. .

Instead of having the work rolls in Fig. 7 and 8 attack from four sides at the same time, can alternate between two work rolls

Attack the workpiece at the top and bottom and two from the right and left. With the appropriate Kulibrirung the work rolls one then has no rotation of the workpiece necessary and achieves treatment from all sides.

In all the figures the work rolls are best not of concentric caliber, but rising or falling respectively. increasing or decreasing caliber (Fig. 3). The caliber itself can be round, oval or otherwise shaped to fit the workpiece into the to bring the desired shape.

Since the work rolls usually have expanding or narrowing calibres, so must when they come into contact with the workpiece, they regularly have the same points of theirs Present the caliber if a cylindrical or prismatic piece is to be produced. to for this purpose the gears on the work roll axles have such a number of teeth in relation to the ring gear with which they roll, they do so with every rotation Always assume the same position on the workpiece.

One can, however, this return 'to the starting position of the work rolls at Entry into contact with the workpiece by other means instead of gears cause z. B. by springs, which always return the work rolls to the initial position.

At the moment the work rolls come into contact with the workpiece, then As a result of the friction with the workpiece, the work rolls rotate and roll up same, from. After leaving the workpiece, the work rolls are then through the spring is moved back into the initial position against a stop (FIGS. 9 to 11).

If you make the work rolls heavier on one side, the spring can by centrifugal force or replaced by weights.

Instead of the above-mentioned methods of returning the work rolls to their Starting position can especially when using only one work roll for the Propellants also use other mechanical means, e.g. B. pole tracks or steering rods, to be used.

If the work rolls are rotated in such a way that they do not always present the same parts of their conical caliber to the workpiece, then conical, conoidal or stepped workpieces can be produced. The easiest way to do this is to use either the sprockets e and /; arranged rotatably and imparted a certain rotational movement to the same by mechanical means (endless screw, or otherwise), whereby the workpiece then periodically comes into contact with other workplaces of the conical caliber, or the same can be achieved by changing the number of teeth on the toothed rings on the work roll axes in relation to the number of teeth of the gear rims on which they roll, is such that the latter are not multiples of the number of teeth on the work rolls. Externally conical, conoidal, or stepped workpieces can also be obtained by moving the propulsion bodies with the concentric toothed rings belonging to them constantly or periodically away from or approaching the working center during the rotation.

If you want a conical, conoidal or offset inside of hollow workpieces To achieve shape, a conical, conoidal or stepped mandrel is used on which one gives a different position during the rolling out of the workpiece to the propulsion bodies by applying the Spines axially constant or periodically displaced or retracted; every time between the Rolling pieces of the dome then determine the inner dimension. If you turn conical or stepped, longitudinally adjustable mandrels at the same time as those described above two processes of outer conical rolling are used, so one can use tubes of produce varying inner and outer diameter.

The advancement and rotation of the workpiece respectively. Domes between the rollers, In the present procedure, the easiest way to do this is by hand, but it can the screw or other means are also used to move and rotate will.

If you move the workpiece differently from the mandrel, you can do the same thing pull or push off from the mandrel during rolling, and this pulling off can or deportation happen constantly or periodically, and that during the attack of the work rolls on the workpiece or in the intermediate breaks or after completion all the rolling work on a special press or drawing device:

Fig. 7 shows a device for rotating of the work rolls during the rotation of the drive bodies by means of gears on the roll axles and rotating gear with external teeth on the propulsion body axis, in contrast to the fixed ring gear in Fig. 1 and 2, which is designed as a ring gear.

In FIGS. R and 8 the gear wheel is moved in the same direction at a correspondingly greater speed than the drive body axis in order to achieve that the work rolls

roll on the workpiece at the desired speed.

Fig. 9, io and η show work rolls, which are rotatably arranged and with which springs the return to the initial position obtain.

With rotations of the driving body, the work rolls come b with the workpiece into contact by friction in contact with the workpiece, they roll off on the workpiece and tension the spring ■ F (Fig. S).

FIG. 10 shows such a rolling mill in longitudinal section, FIG. 9 shows a section transversely through the work rolls according to AB, FIG. 11 shows a section according to CD through the springs rotating the work rolls. According to Fig. 12, the suspension is replaced by the loaded lever K, in which by means of centrifugal force the work rolls b are countered against projections M on the drive bodies until the work rolls are rotated with the lever under the influence of contact with the workpiece.

After the contact with the workpiece has ceased, the lever rotates the work roll again up to the stop M. If the rolls do not run very quickly, the lever can also be turned through instead of by centrifugal force. Let the weight work by giving them an appropriate position.

In the arrangements shown in FIGS make the work rolls, which are mainly intended for very small dimensions, when the propellant rotates only oscillations back and forth, not complete rotations around their axes of rotation.

For many cases, as shown in Figs. 12 and 13, geni'ict the centrifugal force of the work rolls even to keep it in an initial position at the beginning of contact with the workpiece to have, which comes back automatically after the touch has stopped.

Claims (1)

Patent Claims: 1. Process of rolling, shaping or sizing of hollow and solid bodies, sheet metal, wire, by roller rollers, whose axes describe cylinders, cones or hyperboloids around a second axis, being provided with expanding or narrowing calibers Roller rotations or partial rotations run around its axis of rotation and focus on a short piece of the continuously or periodically advancing workpiece Repeatedly unroll, causing the workpiece to come off intermittently from one end on the other hand, is progressively processed, and where the work rolls and the Workpiece relative to each other a pilgrim step-shaped Perform movement as in procedures protected by Patents No. 58762 and No. 59052. 2. To carry out the process protected under 1. a rolling mill, marked .by one or more force-introducing drive rollers and one or more work rolls provided with expanding or narrowing gauges, which in the ball or body of the propellant are stored eccentrically to their axis of rotation and even rotary movements carry out. 3. A rolling mill of the type protected under 2., characterized in that the Rotation of the work rolls about their axes of rotation takes place through associated with them Sprockets and unwinding of these sprockets in the circular movement of the work rolls around the floating body axis ', on toothed wheels or toothed rings mounted concentrically with this propulsion body axis, which are fixed or arranged in a rotating manner. A rolling mill of the under 3rd protected Art, characterized in that the rotation of the work rolls around their axes of rotation during their movement around the propulsion body axis occurs through the friction in contact with the workpiece, and Return . in the initial position 'by any mechanical means, e.g. B. ring gears, Spring, weight or centrifugal force of the one-sided heavier work rolls. 5. A rolling mill of the type protected under 2., characterized in that a Anvil as an abutment for the workpiece when processing the same by an or multiple roller rollers are used. 6. A rolling mill of the type protected under 2., characterized in that 2, 3, 4 or more propellants with embedded work rolls are used, the latter on different sides of the same Attack the work-in-progress point of the workpiece and at the same time alternately or periodically machine the workpiece in pairs. 7. A rolling mill of the type protected under 2. for the production of 'outside or inside or of externally and internally conical, conoidal or stepped workpieces, ^: characterized in that the toothed rims of the work rolls, during the rotations of the drive bodies, roll on the toothed rims or gears that are in contact with them in such a way that they constantly or periodically bring somewhat different parts of their expanding or narrowing caliber into contact with the workpiece. Kin AVii I ζ work of the protected under 2. Type of production of outside or inside or conical outside and inside, conoidal or stepped workpieces, characterized in that the propellant axles with those concentric to them Toothed rings gradually or periodically approached or removed from one another will. A rolling mill of the type protected under 2. for the production of outside or inside or of externally and internally conical, conoidal or stepped workpieces, characterized in that a conical, conoidal or stepped mandrel during the movement of the propulsion body its position in relation to the rollers in the course of the Work changes. For this purpose 2 sheets of drawings.