SU1245366A1 - Feeding and slewing mechanism for tube cold rolling mill - Google Patents

Description

one.

The invention relates to pipe production, in particular to cold rolling mills for roller pipes. type and can be used for cold rolling mills of pipes.

The purpose of the invention is to increase the speed of the mill by cin: - also dynamic loads.

The drawing shows a kinematic diagram of a cold rolling mill tube mill.

The rotary mechanism of the cold-rolling mill comprises a drive 1-piece 2 with a crooked, thrust-and-rod mechanism 3 connected with a drive through a conical pair. 4 and transmission 1 box 1 box; b, located on the box of speeds, the converter of continuous rotation of the drive shaft into an intermittent (periodic mechanism) in the form of malt yokoh about the cross 7 sitting on the inlet 8 of the speed box, and leads to 9 - crank, sitting on the output shaft 0 of the gearbox, cartridge 11 for feeding and rotating the workpiece, having movement displacement from the screw

the supply connected with the speed box - 30 bursts of intermittent action, and the rotational drive through the gear train 13 and the additional converter in B1, the Maltese cross 14 with the driving gear 15 - the crank sitting on the shaft 16, rigidly coupled to the shaft through the coupling 17 0, chuck mandrel 18, having a rotational drive 19 in the form of a gear and an additional Maltese cross-converter 20 with a drive link 21 — a crank sitting on the shaft 22, rigidly through a coupling 23 connected to the shaft 10.

When rolling, the working stand 2 performs a reciprocating movement from the drive 1 movement. By means of a gear transmission, power is taken from the engine to move the auxiliary feeding and turning mechanisms. The transmission shaft 5 transfers the gears to the gears of the gearbox of 6 speeds, the gear ratio of which is selected in such a way that the output shaft 10 - the driving shaft of the feeding and turning mechanism, rotates with speed.

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five

equal to the speed of rotation of the crankshaft drive cage. On the shaft 10, the driving link 9 of the converter periodically rigidly rotates the input shaft 8 of the gearbox at a certain angle. Through the speed box, the movement is transmitted to the feed screw 12. The feed rate is controlled by changing the gear ratio of the gearbox.

With the constant coupling, the output links 10 and 21 additionally transform the gels, the driven parts of which, malti) 1, are connected with the rotation of the output shaft 10 by means of adjustable coupling sleeves 17 and 23. the crosses 14 and 20, through the mixed gears 13 and i9, rotate the spindles, respectively, of the cartridge of the mandrel-shank and the cartridge of feed and rotation of the workpiece.

Yaastroyka camp, t.a. coordination of the response time, supply chains, workpieces and rotation: of the mandrel rod is made by changing the mutual orientations of the leading links — crankshafts by converting adjustable coupling couplings, taking into account the kinematic compliance, operating mode, and technological requirements.

Installing periodic action converters directly on the actuators (naj po-nm) leads to a significant decrease in nei.nra (from 55 to 6%) of the delivered moments, periodically moving the masses, and consequently, reducing the dynamic loads, and the presence of adjustable 1X coupling couplings It is not possible to correct the onset of the phases for the operation of transducers of the transient action, taking into account the compliance of the kinematic chains.

Such problems in improving the cold rolling mill tube of pipes can increase the reliability and durability of the assemblies and stats as a whole, increase the efficiency and quality of the rolled pipes, increase the speed of the mill by about 45%.

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Compiled by L. Maturina Editor L. Gratilo Tehred O. Sopko, Proofreader O. Lugova

Order 3941/5 Circulation 518. Subscription: VNSHSHI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Yaroektna, 4

Claims (1)

FEEDING AND TURNING MECHANISM OF THE COLD ROLLING MILL. A TUBE comprising a cage drive, a gearbox, a feed and turn cartridge, a drive, a mandrel bar cartridge, its drive, a continuous to intermittent converter mounted on a gearbox and kinematically connected to the cartridge drives, characterized in that, for the purpose of increase the speed of the mill by reducing dynamic loads, it is equipped with additional converters of continuous rotation into intermittent, mounted on cartridges and kinematically connected with their drives, When this § duschie of Great layers of additional transducers are rigidly connected to the clutches of the driving member drive shaft mounted on the gearbox. SU 1245366 A1 1245366 2