Automatic Pneumatic Paper Cutting Machine

Generally, scissors are used for simple paper cutting. It is a method which results in wastage of papers because of mistakes such as wrong dimensions etc., and also even a simple cutting may take a long time. Hydraulic machines are also available for paper cutting. But it is used only for heavy paper cutting & sheet metal cutting in large industries and its cost is very high. To resolve this problem, you are going to build a pneumatic system which will be rather easy to build but also work effectively during paper cutting.

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The material you should use to build the frame of the machine is Mild steel. This is because It is the greatest material mankind has for construction. It is cheap, strong, readily available, easily cut, joined, and formed. You will use a cylinder for storing pressurized air. This pneumatic pressure is used in the double acting cylinder, which will convert pressure energy to mechanical energy by achieving reciprocating motion. Blades made from stainless steel are cheap and easily available in the market. You will use those for exerting the shearing force on the paper.

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Project Description:

  1. PNEUMATIC CYLINDER: Pneumatic cylinders (sometimes known as air cylinders) are mechanical devices which use the power of compressed gas to produce a force in a reciprocating linear motion. Like, hydraulic cylinders, pneumatic cylinders use the stored potential energy of a fluid, in this case, compressed air, and convert it into kinetic energy as the air expands in an attempt to reach atmospheric pressure. This air expansion forces a piston to move in the desired direction. The piston is a disc or cylinder, and the piston rod transfers the force it develops to the object to be moved. Engineers prefer to use pneumatics sometime because they are quieter, cleaner, and do not require large amounts of space for fluid storage. Here you are going to use Double acting pneumatic cylinder as it provides two linear motion.
  2. NIPPLE Device: In plumbing and piping, a nipple is a fitting, consisting of a short piece of pipe, usually provided with a male pipe thread at each end, for connecting two other fittings. You will use this one to fix two female joints of two pipe.
  3. ASSEMBLED RAZOR BLADE: Razor blade steel, also known as razor steel, is a special type of stainless steel designed specifically to be used as a razor blade. You will use a no of blade to make a blade assembly, which will be used to cut papers.
  4. TOGGLE SWITCH: A toggle switch is used to control the flow of compressed air to the cylinder. You will use this switch in two positions, one for allowing the air to enter at the backend and the other for moving the piston upwards. No air passes in the intermediate positions.

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Project Implementation:

  1. At 1st do some research on the component specified above. Try to get a basic Idea on these components with the specification.
  2. Then design the frame of your machine using any solid modelling software. While designing consider the following points,
    • Availability of materials.
    • Suitability of the material for the required components.
    • Suitability of the material for the desired working conditions.
    • Cost of the material and Design.
    • The strength of your structure.
  3. After done with designing, fabricate the structure. While joining go for fixed joints, as rigidity should be of higher preference.
  4. Then assemble pneumatic cylinder, Compressor, Nipple, Blades, a toggle switch to the fabricated structure.
  5. After the assembly give electricity supply, to perform the paper cutting operation.

Project Brief: The composite which you will build most be strong in both compression, tension and bending too. Proper distribution of reinforcements and polymers over the entire volume will result in higher mechanical strength of the composite.

Software requirements:

  1. CATIA: This is one of the popular solid modelling software made by Dassault System. You will use this software to design your machine structure.

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Automatic Pneumatic Paper Cutting Machine
Skyfi Labs Last Updated: 2021-04-01

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