Other Products / Services #1860054

As shown the machine is most suitable as a replacement to conventional plate bending machine where pre bending is done manually or on press machine outside and then inserted to machine for rolling purpose.
The machine is most economical model among all plate bending machine and is most useful for small fabrication shop as well as the shop having separate press machine on which pre bending can be carried out.
Since this is a rolling only machine all the power is available for rolling purpose and one can roll smallest possible diametrer for heavy thickness plate material.
The same machine can also used for plate straightening machine for small left over rolled material which is to be reused after straightening.
Also rerolling is easily possible in this machine which enables apple effect correction and out of roundness correction to make it a perfect circular shape to component.

The three roll Planetary axis is a three roll machine having pre pinching/pre bending facility within the machine.
The plate can be inserted from one side and is clamped between top roll and one of the pressure roll for a firm grip and the another pressure roll advances further to form desired radious of shell.
The same procedure is repeated but on another side of plate to form desired radiouse.
After having done pre pinchind the plate is formed in to circular shape by rolling and further pressing of pressure rolls and by forward and reverse movement of rotation by rolls.
Usually a shell is formed in multiple passes of rolling by forward and reverse movement of rolls in rotary motion.
It is also possible to form shell in a single pass provided the pressure roll position is well known for particular size of shell rolling by regular practice and experience.
The PLC based machine is most suitable for repetitive type of jobs and shapes required regularly Other shapes can also be forme in this machine in single pass like square, polycentric, elliptical or open rolling.

The working principle of 4 roll plate bending machine is similer to that of 3 roll plate bending machine but only the difference being it has one extra roll below the top roll which works as a clamping roll or more commonly known as pinchincing roll.
The main advantage is that the plate can be feed horizontally since the bottom and one pressure roll work as a support roll for plate ( in case of 3 roll machine plate is required to feed in a slant position)Also the pressure roller on opposite side works as a reference surface and plate can be fed at perfect right angle to pressure roll or machine.
After the plate is held firmly between top roll and pinching roll , the pressure roll advances to form desired radius on plate edge and adjacent area as shown The radius thus formed is checked with the template and same procedure is repeated till the template matches with pre bent/pre pinched edge of plate.
After pre pinching the one edge of plate the same procedure is repeated on the another edge of plate to form pre pinching radius.
After forming desired radius on both the edges , the rolling/bending is carried our by rotating all rolls in a reverse and forward direction till the complete circle is formed.
It is possible to form different shapes like square, rectangle, polycentric, elliptical, etc shapes more precisely , but it is must that this are formed in a single pass and machine with PLC based controls is most suitable for this application.
Also this machine is most suitable for mass production type components which requires repeatedly same output results mass.
For engineering shop where same size of rolled products are required to be produced in small quantity and the sizes may change on day to day basis depending on job type , the shell can be produced by rolling completed in multiple pass.

As the name indicates the variable axis plate bending machine have all 3 rolls which changes its axis as per rolling needs.

The top roll moves up and down and both side rolls move in and out horizontally giving advantage of reducing bottom roll centre to form small diameter and medium thickness shell rolling and also by increasing bottom roll centre one can roll large diameter and heavy thickness shell.

The another main advantage of machine is that the working height is much less compared to 3 roll/4 roll planetary axis machine.

Also mac hine up to capacity of 50 mm plate bending may not need any foundation.

The variable axis machine can also work as a press for plate straightening application and is also capable to roll conical shapes to almost 80% values that of machine specified capacity by using it as press.

The latest in the 3 roll section bending machine design which gives advantage of 4 roll machine ( the bottom roll workind as a pinch roll) which enables clamping of sections at the centre between top and bottom roll to reduce distance between pinch roll and bending roll

Due this working principle of machine the straight portion of section is at minimum which increases effective material utilisation.

In this type of 4 roll section bending machine the bottom roll works as apinch roll and the material is clamped firmly betwwen top and bottom roll .The side roll advances to give desired radious of bending

Since the bending force is applied nearer to clamping point the unbend portion of section left straight is at minimum.

Due this working principle of machine the straight portion of section is at minimum which increases effective material utilisation.