Steel Cone Roller

We are a professional cone rolling machine manufacturer with over 10 years of industry experience. Today, we would like to introduce the working principle of cone rolling machine to you:

As an important equipment for metal plate forming and processing, the working principle of roll taper machine is based on elastic-plastic mechanics and mechanical transmission theory. This article will systematically describe the mechanical structure of the cone rolling machine, the working principle and key technical points.

1, Equipment structure composition

Standard cone rolling machine is mainly composed of the following core components:

(1)Frame: The steel structure frame that carries the whole equipment

(2)Working roller system: Including the upper working roller and lower working roller group

(3)Transmission system: motor, reducer, gear and other power transmission devices

(4)Hydraulic system: Pressure device to control roller displacement

(5)Control system: PLC or CNC control unit.

Among them, the form of configuration of the work roll determines the type of equipment. The common ones are:

Three-roll symmetrical type

Three-roll asymmetric type

Four-roller type

Multi-roll specialized type

2, The working principle analysis

The working principle of the cone rolling machine can be divided into three main stages:

(1)Feeding and positioning stage

The sheet enters the work roll area through the feeding device, and the initial positioning accuracy is ensured by the side guiding device. At this time, the upper roll is in a lifting state, preparing for subsequent molding.

(2)Progressive molding stage

The upper roller is driven by the hydraulic system to press down, so that the plate produces initial bending. With the rotary movement of the roll axis, the plate undergoes plastic deformation under the action of three-point bending. Through repeated reciprocating rolls, it gradually reaches the predetermined curvature.

(3)Stage of molding correction

When the molding is close to the final size, fine-tuning correction is carried out. By precisely controlling the roller spacing and pressure, the effect of rebound is eliminated and dimensional accuracy is ensured.

3, The key technical points

(1)Roller configuration technology

The upper roller adopts adjustable slope design to realize taper control.

The lower roller group adopts rigid support structure to ensure molding stability.

The hardness of the roll surface is controlled at HRC55-62 to ensure wear resistance.

(2)Pressure control system

The pressure range of the hydraulic system is usually 15-30MPa.

Adopt proportional valve to realize precise pressure adjustment.

Pressure fluctuation is controlled within ±0.5MPa.

(3)Rebound compensation technology

Preset compensation parameters based on material database

Real-time feedback adjustment by laser ranging

Typical compensation amount is 5-15% of the theoretical angle.

4, Process parameters control

The main process parameters include:

(1)Molding speed: usually controlled at 2-8m/min.

(2)Single downward pressure: not more than 15% of the thickness of the plate.

(3)The number of rolls: according to the thickness of the material to determine, usually 3-10 times.

(4)Roller temperature: control at 60 ℃ or less, to avoid thermal deformation.

5, Typical application cases

Take boiler cone molding as an example:

(1)Material：Q345R boiler plate, thickness 20mm

(2)Molding angle：30°

(3)Process route:

Initial molding: 5 times rolling, each under pressure 3mm

Finishing molding: 3 times fine-tuning rolling

Rebound compensation: Preset 3° overbend amount

Final precision: Angle tolerance ± 0.5°, roundness deviation ≤ 2mm

If you are interested in cone rolling machine, please contact us.