SU1212649A1 - Bending and straightening roller-type machine - Google Patents

Description

2. The machine according to claim 1, about tl and h and rant a so that the attachment point of the spacer roller to the lower work rolls is made in the form of two supports located at the ends of the spacer roller, each of which consists of a fixed on the spacer roller holders in which are mounted. four axes contacting with lower

The invention relates to the processing of metals by pressure and can be used in bending and straightening machines.

The aim of the invention is to expand the technological capabilities by reducing the curvature of the adjacent work rolls in the horizontal plane, which occurs at different speeds of rotation of the rolls, and expanding the technological capabilities as a result of increasing the thickness, strength of the blanks, as well as providing bending of the end portions of the billet.

Figure 1 shows a diagram of a three-roll bending machine; figure 2 - spacer roller; on fig.Z - section aa in figure 2.

The machine has an upper roller 1 and two lower rollers 2 mounted on support rollers 3. A spacer roller 4 is placed between the lower rollers 2, on two pins 5 of which there are fastened casing 6, in each of which the axis 7 is mounted, using standard fastening elements 8- eleven.

The machine works in the following way.

When the work rolls 1 and 2 rotate, the axes 7 of the sleeves 6 and the spinning roller 4 rotate, which are in contact with the lower work rolls 2. When one of the lower rolls 2 is bent, the spacer ponut 4 does not allow these rolls to come together, which prevents unwanted bending rolls in excess of ADAPTESHF1X values equal to 0.001 lengths of the latter Spacer 4 and axis 7 on the cage

1212649

working rolls, with one pair of axes located above the horizontal plane of the lower work rolls, below, and the dissolution between the outer side surfaces of each of the axle pairs exceeds the distance between the inner side surfaces of the lower work rolls.

6 rotates from the friction of the lower work rolls 2 and does not interfere with the bending and straightening process.

When performing hemming end

. of the workpieces, the last bending end is laid on the spacer roller 4 and one of the lower work rolls 2. When pressed with the upper roll 1, the end portion of the workpiece is bent on the required

radius. Due to the fact that the shoulder is out, the bend is less than the distance between the lower working rolls 2 and can be arbitrarily small depending on

From the input of the workpiece, you can ensure the hem of the workpiece. The limiting thickness of the billet being bent is determined by the strength of the construction of the spacer roller.

The roller assembly is installed either when the rolls are mounted or when the rolls of the rolls 2 are separated and then hangs last when they are brought closer. Spacer 4 dl

ease of installation can be installed with a gap of 1 to 4 mm.

Example.- When bending and straightening the workpiece with a width of less than half the working length of the rolls and thickness.

70 mm (instead of 50 mm according to the passport of the machine) from high-strength steel on a three-hp plate bending machine. With a force of 5000 ton-force, bendings of the lower work rolls over 32 mm are observed, due to which the work roll bearings break down and the bed bends. When using the spacer roller ", the said machine excludes bends

the lower work rolls, the reliability of the machine operation increases, that allows 31212649

It is necessary to reject the purchase of power-% it is necessary to build a span of 48.5 m of a straightening machine with a production capacity of 7.5 million rubles, for which 10,000 m is required.

FIG

Editor A. Vorovich Order 694/16

Compiled by S. Shibanov

Tehred S.Nace Corrector L Patay

Circulation 783 Subscription VNIIPI State State Accounts USSR

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

Filial PPP Patent, g, Uzhgorod, st. Project, 4

Claims (2)

1. BENDING AND RIGHT ROLLER MACHINE, containing upper and lower work rolls that are located in the horizontal plane and mounted on the support rollers, characterized in that, with the aim of increasing reliability in operation and expanding technological capabilities by reducing the deflection of the rolls in the horizontal plane, it is equipped with a spacer roller mounted in the plane of the lower work rolls with the possibility of simultaneous contact with the side surface of each of them, and a node for attaching the spacer roller to the lower ra ochima rolls. 2. The machine according to π.1, characterized in that the attachment point of the spacer roller to the lower work rolls is made in the form of two supports located at the ends of the spacer roller, each of which consists of a holder fixed to the spacer roller, in which four axes are mounted, in contact with the lower work rolls, moreover, one pair of axles is located above the horizontal plane of the lower work rolls, the other is lower, and the distance between the outer side surfaces of each of the pairs of axles exceeds the distance between the inner side awns lower work rolls.