Active Learning Assignment (Manufacturing process- I)(2131903)

Topic:- Boring machineMechanical Engineering (3 C3)

Prepared By: Chandresh Suthar (140120119229) Sonani Mananv (140120119229) Govind Tade (140120119230)

Guided by:

Prof. Tapan Patel

GANDHINAGAR INSTITUTE OF TECHNOLOGY

Contents Of Boring Machine

BoringHistory of boring machineTypes OF Boring Boring MachineTypes of Boring MachineUses of Boring machine

Boring

In machining, boring is the process of enlarging a hole that has already been drilled (or cast), by means of a single-point cutting tool (or of a boring head containing several such tools), for example as in boring a gun barrel or an engine cylinder.

Boring is used to achieve greater accuracy of the diameter of a hole, and can be used to cut a tapered hole.

Boring can be viewed as the internal-diameter counterpart to turning, which cuts external diameters.

History OF Boring Machine

The first boring machine reported to have been built was Henri-Joseph Maus' Mountain Slicer. Commissioned by the King of Sardinia in 1845 to dig the Fréjus Rail Tunnel between France and Italy through the Alps, Maus had it built in 1846 in an arms factory near Turin.

The first successful use was on the Oahe Dam in 1952 by James S Robbins.

Types Of Boring

There are various types of boring. The boring bar may be supported on both ends (which only works if the existing hole is a through hole), or it may be supported at one end. Lineboring (line boring, line-boring) implies the former. Backboring .

Types of Boring1 Line Boring 2 backboring

Line Boring

Line boring implies former .line boring machines support boring diameters from 1.375 to 80 inches (35 to 2030 mm), with the precision and speed of stationary machines. Specially designed mounting brackets, spherical bearings, self-centering setup cones, and movable rotational drive and feed units simplify setup and allow the tools to work in spaces too tight for most line boring machines.

Back Boring Machine

Backboring (back boring, back-boring) is the process of reaching through an existing hole and then boring on the "back" side of the workpiece (relative to the machine headstock).

Boring Machine

A machine tool designed to machine internal work such as cylinders, holes in castings, and dies; types are horizontal, vertical, jig, and single.

Types OF Boring Machines

The two types of the boring machine, each of which has several varieties, are the horizontal boring and drilling machine, and the vertical boring and turning mill.

Horizontal Boring Machine

A horizontal boring machine or horizontal boring mill is a machine tool which bores holes in a horizontal direction. There are two main types — Table and Floor. The table type is the most common and, as it is the most versatile, it is also known as the universal type.A horizontal boring machine has its work spindle parallel to the ground and work table. Typically there are 3 linear axes in which the tool head and part move.

Horizontal boring machines are often heavy – duty industrial machines used for roughing out large components but there are high-precision models too.

Vertical Boring machines

A vertical boring mill is a machine used to bore holes in metals, usually iron or steel. They are very similar to a typical milling machine, where the workpiece is kept stationary, and milling tools rotate at high speeds. These tools are very similar to drill bits on a drill press and come in many different shapes and sizes to accommodate a variety of applications. A vertical boring mill, however, primarily uses boring bits to bore holes in metals vertically. Boring mills are typically used for drilling holes, or machining the cylinders of an engine block.

Tunnel Boring machine

A tunnel boring machine (TBM) also known as a "mole", is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata. They can bore through anything from hard rock to sand. Tunnel diameters can range from a metre (done with micro-TBMs) to 19.25 metres to date

Uses Of Boring Machine

Boring machines are used to mill, drill, bore, cut threads or face turn using a rotating tool, usually a cutter, drill, boring rod or milling head. Boring machines are used to drill closed and open openings in solid material, boring, reaming, threading, milling surfaces, etc. Drill bits, reamers, thread cutters, milling cutters and other tools are used to perform these operations.

Thank You !!!!!