DE1652855A1 - Process for the production of profile rolls - Google Patents

Description

D R. -1 N G. WA LT ERAB! TZ T 6 5? 8 5 5 ^{8 MÖnchen 27} '«« «eneuersfraße

r> »rm-TCD wriDC ^JUJAOJJ . Telephone 483225 and 48 64T5

DR-DIETERMORF. Telegrams = Chemindus Munich Patent attorneys

9. Pefonser 1968

P 4184

DUNCAN ANDREW ENGINEEHS (PROPRIETARY) LIMITED

Saint Auetel Street "Alberto", Transvaal Brovlnce, south african republic

Process for the production of profile rolls _:

The invention relates to a method sur production of profile rolls and the rolls produced by dieseia procedures and in particular roll in the production of Running "for tracked vehicles or Halbkettenfahrzeug © Toggle ^x reversible ₉ soft rolls a considerable length in relation below its diameter.

Although such rolls can be made by casting it is generally preferable to produce them by boiling, since they then result in a longer period of wear and tear

90.988 5/0 20 8

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P-4184

the fiber course lift »that through suitable Sweden can be obtained

Up to now, only clad rolls have been made in two halves, as far as the applicant is aware, which are very reluctantly clad to the required band profile After the remaining rods or nipple section or web have been punched out and bored out, the two halves are placed on a bushing arranged »which they TRIGT and HSLT" After de * applying to the bushing are verschwelst the mutually ιtossenden ends of the two half-rollers together and finally processed to the "rfor" derliche ^v profile, wherein processing nor "- aalerweise verhttltnismässig large tolerances are permitted ο

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As a result of the large number of operations required and the loss of metal in machining the rollers are expensive despite the fact that it is a wear part that is used in very large numbers »

The main object of the invention is the production of such rollers in the form of a single coherent forge "stick at significantly lower costs than was previously possible with conventional methods".

. 90 9 8 85/020 8

The method according to the invention for the production of profile rolls or * rollers comprises the following process steps

a _o the arrangement of a stick in a divided hollow hswo in a divided die »which is open at both ends;

bo the forging of the billet sit with the help of opposing punches, which are equilateral into the open ends of the die pressed, with the latter under kept closed at high pressure;

Co the punch withdrawn the die opened uad the forged billet is removed »

The following is a. preferred method for preparing 'm of Ftofilvollen according to d @ r -i invention »conjunction with the drawings b®ilieg®nden described specifically.

₀ 1 shows a sectional view of the device used with a single billet in an arrangement in readiness for forging;

Fig « Z the formed billet _p with the punch in

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their inner working position, and

Fig * 3 is a partial view showing a lengthening piece

shows old one or more dtr steeple equipped are.

The illustrated embodiment is _s of for example 25 whether has application to the production of a Felgendoppelflansch-roller of substantially conventional Big which both a length and a diameter and is made of a conventional material _B such as carbon "steel or alloy steel _8, the method for forging such? Roles directed

To carry out the forging operation are cylindrical, each with a three-Working ": shown * capacity between about 6oo and lüoo tons in the form of sines reverse Tange Related which are installed in a frame 1 _p vie in the drawing," Two of these working cylinders 2 are arranged horizontally and mutually facing _e while the third working cylinder 3 is arranged centrally between the other two and worked vertically downwards

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Each of the horizontal cylinders is a stack 4 freaked out tmd dit tmter · Helps · 5 one shared · !! Die corresponds to the Aitsseiifoni of the profile role and is rigid «fish the pistil tmd la Ausfluehtung old this arranged «Dl · upper help · of the die is mm de» vertically acting working cylinder carried »

To produce the roll, the stacks 4 are withdrawn, the die is opened and a suitably heated billet 7 is placed on the lower half 5 of the die. The die is then closed and while it is kept closed under high pressure, the dies are fed at the same time communicated into the open ends of the die in order to effect the splitting process until they finally assume the positions shown in FIG. 2 _Q

After withdrawing the staple and opening the The forging stack 8 is removed from the die, and the rest of it Knappel section 9 "which" forms between the stamps, punched out. Bs is considered possible the Carry out the latter operation with the help of one of the forming punches while the forging is still ia die is held for this purpose, the forming dies know su-

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rOckgesoge * will * and kaan eta Verlsageroagatfick Io (see Fig. 3), which forms the iron stegvetjiaJMesteapel, which is attached to buckets voa it is attached, damn mm Ausstansen of the web will be activated * · Di · Bobnmg der Roll · is then for example machined with decomposition of a drilling spindle.

The basic work that was going on, which was still required, depended on the rules that caused it however, in each case the cost of implementation is normally lower than that incurred in the current manufacturing process after forging the two halves attack"

The roll can be in a usable shape after the forging has been bored and trimmed. If necessary, can processing may be required, but this is disproportionate insignificant, since dl · roll directly within reasonable tolerances of a conventional profile shape can be forged. Since the roller is a forging made of one piece, there is no bushing Storage required, however, such a desires to be used to obtain a bearing running surface.

"* .. 90988 5/0208

P-U84

The process of the invention was specially developed for manufacture of rim double flange rollers (rle double flange track rollers), but it is also suf the production of similar profile rolls can be used were made by attaching separate forgings to each other

Of course, the minimum size or capacity changes the required presses according to the size of the profile rolls.

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Claims (1)

P-4184 VJ _{9 #} yvtM ^ Mup 1968 Claims 1 Process xttr production of profile rolls, thereby marked that a. a billet inserted into a split forging die "da" is open at both ends, bo the billet forged by opposing punches wit4 which are squeezed into the open ends of the die on the same side, the latter under high Pressure is closed », Co the punches are withdrawn, the die opened and the forged billet is removed ». 2ο Process for the production of profile rolls, thereby marked a ο a billet is placed in a divided cutting die, which is open at both ends » 9098 85/0208 8 P-4184 bo the billet forged by opposing punches which are pressed simultaneously into the open ends of the die, the latter kept closed under high "pressure to form a cavity in each end of the billet, however to leave the remaining material »which forms a web between the cavities, c. The staple is withdrawn _p the die is opened, the forged billet is removed, and the web is removed. 3, method according to claim 2 "characterized in that the bar is removed by a punching process » 4a method according to claim Z _0, characterized in that & the web is removed by a drilling process. 5. A method for the production of profile rolls, characterized in that a. brought a billet into a split forging die becomes, 'which is open at both ends, 909885/0208 -9- P-4184 bo the stick sniffed through opposite sticks * det is ρ which simultaneously in the open bands of the die, the latter being kept closed under high pressure, us in to form a hollow space at each end of the stick, but to leave the remaining material that forms a web between the cavities " Co the stamps are withdrawn, do the bar punched out i / ird ₈ 9c the die opened and the forged billet removed o 909885/0208