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MANUALLY OPERATED SHEET ROLLING MACHINE
INTRODUCTION
Sheet metal creation assumes a vital part in a metal assembling world. Metal sheet is utilized as a part of the generation of materials extending from devices, to pivots, cars and so forth. Sheet metal manufacturing ranges from profound drawing, stamping, framing and hydro shaping, to high vitality rate framing (HERF) to make desired shapes from different purposes. Application of sheet metal is there
in tool making, automobiles industries, boiler shell industries and many more. Sheet metal forming, consisting of deep drawing, forging, and hydro forming, to create desired shape. More easy and elegant shapes may be folded from a single plain sheet of material without stretching or machining, if shape of sheet metal is the bending continuously the piece along a linear axis, this causes alteration of the original form of the sheet as it passes through a path way of bottom rollers. The present innovation relates to the plate bending machine which operates with rollers. Although there are many automated sheets rolling machines are presently available in market today, our aim was to design and develop such machine which is manually operated which can be used in small workshops with vey less cost.
COMPONENTS USED IN MANUFACTURING
[1] Three heavy solid rollers.
[2] Driving and driven gears.
[3] Frame and chassis.
[4] Side plate.
[5] Screw jack.
[6] Manually driven handle.
The term shaft usually refers to the rotating machine elements, circular in shape which supports transmitting elements like gear, pulley and transmit power. Shafts are made from ordinary carbon steel and according to the capacity of the machine. Alloy steels are more expensive compared to the plain carbon steel but they are more ahead and serves the purpose to strength, hardness and toughness and are also corrosion resistant. In this machine we have used three rollers of which the upper roller has a diameter slightly larger than the other two rollers which helps to provide early static load to the metal sheet.
Gears
Gear are used to transmit torque and angular velocity in various different applications. There is also a wide variety of gears chosen according to transmit power and torque. The simplest type of gear, spur gear is designed to operate on parallel shaft and having teeth parallel to the shaft axis. Other types of gears such as helical, bevel, and worm can accommodate within non-parallel shafts.
Screw Jack
Screw jack is mechanical device which is used to convert a rotary motion in a linear motion as required. Lifting of any load, pushing or pulling of mechanical equipment, adjusting of tight clearance of mechanical parts can be done by screw jack. The screw thread on jack provides the screw jack a mechanical advantage. Capacity of screw jack is between 5KN to 2000KN.
PIPE BENDING PROCESS
A pipe bending is a process of bending pipe with the help of attached fixtures on one end of the rollers. A pipe is placed in the main frame and fixed to the bending arm by a clamp. The bending arm is initially placed at the front of the bending machine. The pusher then pushes the pipe forward, which results in a rotation of the bending arm. This introduces a high bending moment in the clamp.
The following points also need to be taken into account:
[1] The shape of the pipe to be bent (round-section square-
section, etc.).
[2] The outside diameter “D” of the pipe.
[3] The wall thickness “S” of the pipe.
[4] The required bending angles.
[5] Details of the length “L” of the overall pipe.
FUTURE SCOPE
It can be used in any machine parts where sheet rollers are required. In commercially to make household things to, it can drums of grain storage, fending, gate or wall light. This it has various scope for future with a less initial cost same productions.
WORKING
After keeping roller steady insert 3 to 5 mm sheet after that by screw adjust their height. Then accordingly rotate the handle and after some pick time inject the screw roll 2/3 rotation and again the same process by this we will get a fine rolled sheet.
FUTURE UPGRADATION
As we all know that up gradation is the best way to reduce human efforts. To reduce the human efforts and increase the accuracy of the machine we have planned to add a spring loaded mechanism which is used in toy car or key locks so it would be the best way to upgrade with less cost and with same output efficiency or more.
CONCUSION
Although there are high speed automated sheet rolling machines are available in the market which are more efficient than this manually operated machine but the cost of such machine is very high and small workshop owner cannot afford such costly machines and also automated machines occupies more floor space. Hence main purpose of this concept is make such a machine which everyone can afford and which canbe used anywhere even in small scale workshop and accommodated in small space and it works without affecting the efficiency and performance. Another advantage is as it is manual so it does not rely on electric supply
