SU1021493A1 - Three-high sheet bending machine - Google Patents

Description

The invention relates to b6pa6oj T metal in pressure, in particular to roller bending machines. The closest to the technical essence and the achieved result of the invention is a three-roll bending machine with side support mounted on the frame, an average pressure roll, mounted on the vertical direction of the traverse at the ends of the roller bearings, and; located in the barred duck between the bearing supports mounted on the traverse roller bearings of the pressure roll G 1J. However, such a machine setting the top roll is difficult because of its deflection under the action of self-. weight, and the parts with bending are barrel-shaped, especially if the required beating force MeHbliie is the weight of the roll. The aim of the invention is to reduce the time, ease the setting of the machine and improve the accuracy of bending. The goal is achieved by the fact that a three-roll bending machine, containing side support rolls installed on the frame, a middle press roll mounted on a movable vertical track track on the bearing supports located at the ends of the roll, and located in the gap between the bearing supports traverse roller bearings of the pressure roll, provided with clamps fixed to the traverse, and the pressure in the lock is made with annular grooves, the depth of which is greater than the thickness of the clamps, and the clamps are installed these slots, with the adjusting movement in the direction of tra-45

Versa.

The traverse can be provided with guide rollers installed in its lower part and is adjustable by means of suspended upper rollers which are spring-loaded to the upper part of the traverse, and the clamps are made in the form of an endless flexible band that spans the rollers and the nip roller.

FIG. 1 shows a car, a general view; on. 2 - cut. And in FIG. one; in fig. 3- section BB in FIG. one; in fig. 4- execution of the clamp in the form of a flexible tape.

in this way, then turn on the mechanism for driving the support rolls 3, while the rotating support rolls 2 are moved due to friction

50 billet and thus bend it.

Due to the fact that the pressure roller 1 is always tightly pressed against the intermediate support rollers 7 mounted on the upper yoke 5, its axis is not curved under the action of its own weight / regardless of the width and thickness of the bent workpiece. 3.i Trehva; The sheet bending machine contains a pressure roller 1, support rollers 2, a mechanism for driving the support roller 3 mounted on the bed 4, the upper yoke 5 with the mechanisms for adjusting the pressure roll 6 movably connected to the bed k, intermediate roller supports 7. mounted on the upper beam 5 and frame 4, as well as clamps 8, connected to the upper traverse 5 with screws 9, with screws 9 in the upper part having a right-hand thread, and in the lower part: left-handed. FIG. i shows a collar made of steel tape 10 enclosing the pressure roller 1, support rollers tl and tension rollers 12, the axles 13 of the onopHbix rollers, 11 with the help of brackets 1A fixedly attached to the crosshead 5 and located under it, and the axes nat 16 rollers and springs 17 are connected to helical cams 18, located in the holes of the brackets 19 installed in the upper part of the crosshead 5 and left, and have the possibility of vertical movement. Pressing the pressure roll 1 to the intermediate roller supports: 7 conventional hose clamps 8 with the rotation of the screws 9. The roller clamp 10 is clamped by means of screw pairs 18 by means of tension springs 17, which, trying to raise the rollers 12, pull the clamp 10 (Fig.2). f The machine works as follows in a way. The sheet blank is placed on the support rolls 2, after which, using the setting mechanisms 6, lowers the upper yoke $ with the pressure roll 1. The lowering value is determined by calculation or experience3

in contrast to the known equipment at the present time on the enterprises of mechanical engineering, the proposed machine can (1 {make bending-rolling of large-sized thin sheet blanks and billets with a small width. At the same time, the productivity of labor by reducing push time setting

roll, and also eliminates the need to purchase additional low-power equipment for the bending-rolling of parts with small widths.

Preliminary calculations show that the annual economic effect of using the machine in production is oyopo, 30 thousand rubles.

&

- /

fe

Phage.5

fug. four

f8

R

Claims (2)

(54) (57) 1. THREE-SHAFT SHEET BENDER 'NAL MACHINE, comprising lateral support rolls mounted on a bed, a middle pressure roll mounted on a crosshead movable in a vertical direction on those located on; the ends of the roll of the bearing bearings, and • the roller bearings of the pressure roller fixed on the cross beam located in the interval between the bearing bearings, characterized in that, in order to reduce time, facilitate machine setup and improve accuracy, it is equipped with clamps secured to the beam and the pressure roller made with annular grooves, the depth of which is greater than the thickness of the clamps: and the clamps are installed in these grooves with the possibility of adjusting movement in the direction of the beam. 2. The machine according to claim 1, characterized in that the crosshead is equipped with guide rollers installed in its lower part and the suspension upper rollers are spring-loaded to the upper part of the crosshead, and the clamps are made in the form of an endless flexible tape, covering these rollers and pressure roll.