Hydraulic 4p1628

A

PROGRESSIVE REPORT ON

HYDRAULIC SHEET METAL CUTTING Submitted

FOR PARTIAL FULFILLMENT FOR THE AWARD OF DEGREE OF

BACHELOR OF TECHNOLOGY In

MECHANICAL ENGINEERING SUBMITTED BY MOHD ADIL KHAN (1313240098) PANKAJ TYAGI (1313240115) PRAVEEN CHOUDHARY (1313240123) SHASHWAT NAND (1313240153)

Under The Guidance Of PROF. JITENDRA KUMAR TRIPATHI

GREATER NOIDA INSTITUTE OF TECHNOLOGY, GREATER NOIDA (D TO DR. A.P.J. ABDUL KALAM TECHNICAL UNIVERSITY)

INTRODUCTION The

sheet metal cutting process is a main part of the all industries. Cutting processes

are those in which a piece of sheet metal is separated by applying a great enough force to cause the material to fail. Normally the sheet metal cutting machine is manually hand operated one for medium and small scale industries. The most common cutting processes are performed by applying a shear force, and are therefore sometimes referred to as shearing process. Our project is about the implementation of hydraulic pressure in the process of cutting a metal sheet. Hence we introduce our project namely as “Hydraulic metal sheet cutting machine”. Automation

in the modern world is inevitable. The sheet metal cutting machine works

with the help of hydraulic cylinder. The piston is connected to the moving cutting tool. It is used to cut small sized pieces of the sheet metal. The machine is portable in size, so easily transportable. The hydraulic sheet metal cutting machine has a hydraulic cylinder piston attached to a sheet cutter which has 6mm thick blades, used to cut the required metal sheet into pieces. When the hydraulic jack is scaled and lever arm is moved up and down, the pressure developed in the cylinder reservoir leads to the lifting of the piston rod which cause for the cutting tool to cut down the metal sheet.

PURPOSE OF HYDRAULIC SHEET METAL CUTTING 

Sheet cutting machine of hydraulic type is used to cut the sheets into two pieces by hydraulic power, there is no need of human effect for this machine. This machine has bottom blade and top blade, where bottom blade is fixed one and top blade, where bottom blade is fixed one and top blade is moved by a hydraulic cylinder, remaining structures are made of forged steel and cutting blades are made of high carbon steel.



The sheet metal cutting machine works with the help of hydraulic cylinder. The piston is connected to the moving cutting tool. It is used to cut small sized pieces of the sheet metal. The hydraulic sheet cutting machine has a hydraulic cylinder piston attached to a sheet cutter which has 6mm thick blades, used to cut the required metal sheet into pieces. When the hydraulic jack is sealed and the lever arm is moved up and down, the pressure developed in the cylinder reservoir leads to the lifting of the piston rod which cause for the cutting tool to cut down the metal sheet.

VARIOUS TYPES OF SHEET CUTTING MACHINE



Hydraulically Operated



Pneumatically Operated



Rack and Pinion Operated



Spring Operated

DEG OF CYLINDER The hydraulic cylinder is a device that converts the energy of fluid into mechanical energy. The fluid is pumped into the cylinder by means of a pump and it can be used to move a load. The size of the cylinder determines the amount of load that can be handled by it Major parts of a hydraulic cylinder. 1. Piston 2. Cylinder

EXPLANATION OF DESIGN Design is the application of creativity to planning the optimum solution of a given problem and the communication of that plan to others. Apart from the communication aspect: 

SHEARING



SHEET METAL



SHEARED EDGE

PARTS PRESENT IN SHEET CUTTING MACHINE The hydraulic sheet cutting machine consists of various parts which help in the cutting of the sheet material into various small pieces. The sheet cutting machine is attached to a hydraulic jack who in turn helps the machine to move very easily without any excessive force to add onto the sheet metal. The sheet cutting machine mainly consists of parts such as: 1) Blades 2) Gear 3) Frame 4) Hydraulic Jack

MATERIAL SELECTION To prepare any machine part, the type of material should be properly selected, considering design, safety .The selection of material for engineering application is given by the following factors:

Availability of materials.



Suitability of the material for the required components



Suitability of the material for the required components



Cost of the materials.

The machine is basically made up of mild steel. The reasons for the selection are Mild steel is readily available in market .It is economical to use and is available in standard sizes. It has good mechanical properties i.e. it is easily machinable. It has moderate factor of safety, because factor of safety results in unnecessary wastage of material and heavy selection. Low factor of safety results in unnecessary risk of failure. It has high tensile strength. Low Coefficient of thermal expansion. The materials of the sheets to be cut are taken as aluminium and plastic as they are replacing many metals in the present scenario because of their distinguished properties and features.

OBJECTIVE 

We design a hydraulic sheet cutting machine which costs less than that available in the market.



Preparing useful to cut metal sheet thicker than the capacity of the ordinary shearing machine as it has 3 ton capacity jack.



Simple frame which occupies less space which any one can operate, and manufactured it at 1/3rd of the original cost in market.

Methodology 

The literature view of the process was done highlighting the different types of each of the major processes and the different types of equipment used to perform this process. This complicated the first part of the project, which enables us to come up with a questionnaire to start off the second part of the project which was on survey.



This questionnaire was designed to survey the different companies that do fabrication, the nature of there business, their product range, the size of their workshop, layout, type of equipment and the labour force in the company.



Different companies that offer metal fabrication were identified. The visit to these companies was done and the questioners filled, the data then was analyzed and discussed from which a conclusion was made.

LITERATURE REVIEW •

Sorli P. et. al. (1999) [1] Most of the earlier hydraulic controls systems are used in the process control industries, where the low pressure air of the order 7-bar was easily obtainable and give sufficiently fast response.

•

Tablin et. al. (2000) [2] Studied the certain performance characteristics such as fuel consumption, dynamic response and output stiffness can be compared for general types of hydraulic actuators, such as piston cylinder and reciprocate types.

•

Sebastian et. al. (2002) [3] In this review author studied the an electro pneumatic actuator design was develpoed and tested to meet the engine characterstics such as start ability, load carrying ability, and engine dynamic performance. As an application of micro mechanical actuators a new concept for a micro pneumatically driven actuator has been developed and realized.

•

Pavol et. al. (2008) [4] In intelligent soft arm control (ISAC) robot system the pneumatic actuator was used for the position control of a t.

•

Joachim et. al. (2004) [5] The quality of the model was verified by implementing it as a torque controller and running experiments on a test bed.

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R. K. Singh et. al. (2005) [6] He described the design process by which the air brake control valves of heavy and medium duty trucks were centralized modulus.

GAP IN LITERATURE REVIEW The literature found on metal composite has not taken into consideration following aspects: •

Most of the work has been conducted on metal sheet cutting machine.

•

Not much work has been done on hydraulic jack and solenoid valve.

•

Commonly used mild steel can be applied instead of currently used materials.

•

The input conditions can be varied to parameters like pressure, temperature etc.