PROJECT OF A PNEUMATIC MULTI-PURPOSE GRINDER

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The purpose of our assignment is to layout and fabricate a pneumatically operated multipurpose grinder. Some operations may be performed with this device.

They are as follows:

1.Grinding (Soft and Hard)

2. Drilling

3. Remapping

4. tedious

5. Screwing This device is operated by compressed air.

It consists of the following main parts:

1. Barrel

2. Shaft

3. The framework and supporting columns

4. chuck and key

5. Couplings and other similar devices

A high pressure of compressed air is forced on a fan, and the fan is made to rotate. This rotation is transmitted to the machining head with the aid of a shaft and the specified operation is carried out. Furthermore, if a hole is to be drilled in a part of an automobile, the particular part has to be dismantled from the vehicle. By using this pneumatically operated device, holes can be drilled in the required part without dismantling it from the vehicle. As a result, this pneumatically operated multi-purpose grinder is used for a variety of operations while requiring less investment.

Introduction

The project work subject is one in which we are actually learning the theoretical concepts in a practical way.Practical revel in is one of the objectives of this subject. For a developing industry, these operating procedures and the parts or components produced should have their minimum possible production cost. Then the industry runs profitably. There are a number of units being used in industries for various purposes. For our thoughts, the various project names are given below.

Sheet meal cutter that pedals
Multi-purpose pneumatic device
The Versa mill.
Paint mixer
Mechanical Jack.

From the above, we selected the ‘PNEUMATIC MULTI-PURPOSE GRINDER’. Screw tightening and loosening, as well as drilling, boring, and grinding, are frequently required in small-scale industries and automobile repair shops. Large and intricately designed parts cannot be machined on standard machines. Furthermore, for every operation, a separate machine is required. This will increase the preliminary price required, big location necessities and a big range of machines are required.

WORKING PRINCIPLE

The pneumatic multi-reason grinder is an air-operated tool used for plenty small operations. It is a portable one. Compressed air is the supply of strength for this device. The compressed air is authorized thru the nozzle in the sort of manner to rotate the fan. The rotation obtained is utilised for machining. The nozzles are welded to the barrel at an perspective to facilitate unfastened rotation. The fan may be circled in both route via way of means of running the one-manner corks. The rpm and torque of the shaft depend upon the pressure of the air admitted, so by varying the pressure, the rpm and torque can be varied. The parts are interconnected by thick tubes. Clamps are used on the connecting elements to save you leakage. In threaded elements, thread seals are used to save you leakage. Here the compressed air from the compressor first enters the control unit. In the manipulate unit, the stress of the air is managed and despatched to the barrel to rotate the fan in any individual direction. The air from the compressor enters the gate valve. The gate valve controls the strain and quantity of air. Then the strain is study via way of means of a strain gauge. Then the air is admitted to the barrel through any one of the two one-way corks to rotate fans. A shaft is placed in the barrel, and it carries the fan. The shaft is supported in either direction by bearings. The bearings are placed in the couplings, which cover the ends of the barrel.

APPLICATIONS

This multipurpose grinder has numerous applications in various fields. In industries, this is used in the assembly section. The required pressure is set and the operation is carried out. In automobile shops, various operations are required frequently Drilling, boring, reaming, grinding, etc. It is also used as a screwdriver for tightening and loosening nuts and bolts. It is used

In automobile workshops,
In small-scale businesses
In such places where frequent changes in operations are required,
In welding shops for grinding.

For performing operations in huge parts which cannot be done in ordinary machines, since it is portable.

ADVANTAGES

The pneumatically operated multi-cause grinder has many advantages.

They are as follows:

It is inexpensive, allowing it to be used in small-scale industries.
More frequent and faster operations
A wide variety of operations like drilling, screw driving, reaming, etc., may be done.
The nuts and bolts may be tightened to a specific strain via means of working the gate valve located inside the manipulating unit and the strain gauge.
Both loosening and tightening are possible. since there is airflow in both directions.
The weight of the unit is lower and can be easily handled.
Reliable operation because it does not require electricity to function.
The weight of the machine is concentrated towards the machining head to facilitate easy manipulation of the machine.

The layout is straightforward and there may be no protection required. The control valve for allowing or restricting air may be placed on the handle to make it easier to control the speed of the machine. The unit's maximum speed is 7000 rpm. The pace offers torque that is appropriate for machining. The maximum pressure that can be used is 7 kg/km². The rpm and torque may be varied via means of varying the stress of the air inlet.

DISADVANTAGES

The initial cost is high.
Spindle rotation is pneumatic power, so this machine has low torque.
You need a separate compressor.