Table of Contents

PNEUMATIC AUTO FEED DRILLING MACHINE

SYNOPSIS

In small-scale industries and automobile maintenance shops, there are frequent needs of tightening and loosening in screws, drilling, boring, grinding machine. Huge and complicated designed parts cannot be machined in ordinary machine. Further for every operation separate machine is required. The increases the initial cost required, large area requirements and large number of machine are required.

In a single machine all the above specified operation can be carried out, i.e., after drilling, the drill head is removed from the barrel key and the required tools like grinding wheels, boring tool etc., can be attached, and the operation can be performed. By the application of pneumatics, the pneumatic cylinder with piston which is operated by an air compressor will give the successive action to operate this machine. By this we can achieve our industrial requirements.

See another Mechanism for this project: Fabrication Of Pneumatic Multi-Purpose Machine- Mechanical Project

INTRODUCTION

The main objective of our project is to perform various machining operations using “Auto feed mechanism” in drilling machine with the help of pneumatic sources. For a developing industry the operation performed and the parts (or) components produced should have it minimum possible production cost, then only industry runs profitability. In small-scale industry and automobile maintenance shops, there are frequent needs of tightening and loosening of screws, drilling, boring, grinding. Further for every operation separate machine is required. This increases the initial cost required, large area requirements and large number of machines is required. In our project the above complicated are rectified.

SELECTION OF PNEUMATICS

Mechanization is broadly defined as the replacement of manual effort by mechanical power. Pneumatic is an attractive medium for low cost mechanization particularly for sequential (or) repetitive operations.

Many factories and plants already have a compressed air system, which is capable of providing the power (or) energy requirements and the control system (although equally pneumatic control systems may be economic and can be advantageously applied to other forms of power).

The main advantage of an all pneumatic system are usually economic and simplicity the latter reducing maintenance to a low level. It can also have out standing advantages in terms of safety.

WORKING PRINCIPLE

The compressed air from the compressor is used as the force medium for this operation. There are two pneumatic cylinder used. One is used for auto feeding mechanism and another one cylinder for workpiece clamping. The pneumatic double acting cylinder is used for feeding mechanism .The air from the compressor enters to the four way junction. From four way junctions one way of air enters to the barrel unit. In side the barrel having vane arrangement is welled. The other way of air enters to the 5/2 solenoid valve. The function of solenoid valves all of air correct time interval. From solenoid valve air enters to the pneumatic double acting cylinder through flow control valve.

From 4-way junction, the air also enters to the Single acting solenoid valve. This valve is used to automatic workpiece clamping Operation. The air is from single acting solenoid valve to single acting pneumatic cylinder.

The solenoid valve (5/2 and single acting) ON condition, the drilling head is automatically downwards and drilling operation occurs. At the same time the work piece is clamped by single acting pneumatic cylinder. After some time, the solenoid valve is OFF; the drilling head and workpiece is automatically released.

FIG. PNEUMATIC AUTO FEED DRILLING MACHINE

MERITS

It reduces the manual work.
Quick operation
Accuracy is more
Low cost machine
Its used multipurpose device like Grinding, screw driving.

DEMERITS

Noise produced

APPLICATIONS

Used automobile workshops like carburetor holes
Used small scale industries
In welding shop for grinding
For performing the operations in huge part which cannot be done in ordinary machines. Since it’s portable.
In such places where frequent change in operation are required.

More Resources /articles