Summer Training AT HMT MACHINE TOOLS

7/21/2019 Summer Training AT HMT MACHINE TOOLS

1/30

TOOLS

atHMT MACHINE TOOLS LTD.

SUBMITTED FOR PARTIAL FULFILLMENTOF

BACHELOR OF TECHNOLOGYMECHANICAL ENGINEERING

Submitted By:-

ARPIT NAGPAL

11115150 (D1)


2/30

NTIt is my pleasure to acknowledge the help I have received from different individuals du

project based training period.

My first sincere appreciation and gratitude goes to respected Mr. Prem Chand, HRD OMachine Tools L td. for allowing me to pursue my training in their esteemed organizati

Also it gives me immense pleasure to express my sincere and whole hearted sense of gDGM , Training Center, HMT M achine Tools Ltd.For their invaluable and untiring gusupervision throughout the training period. To derive benefits of their enormous experimatter of great privilege for us.

Finally, I wish to say thanks to Dr. N.K BATRA, HOD, Mechanical Department, MMMULLANA and all people of the institute for their kind cooperation. This report conveheartiest thanks to all those officers and employees of HMT M achine Tools L imi ted, Phave given me their full cooperation and devoted their valuable time, for rendering me services, guidelines during the course of imparting me practical training and with their

precious help, I have been able to complete my practical training successfully.


3/30


4/30


5/30


6/30

Pattern MakingShopMaterials Used:-

Wood, Aluminium and Thermocol

ALLOWANCES:-

Shrinkage allowance.

Machine allowance.

Grinding allowance.

SHRINKAGE OF MATERIAL:-

Every material after cooling contracts or shrinks. This is known as Shrinkage

Shrinkage of Cast iron is 1%

Shrinkage of aluminium is 2%

Shrinkage of brass is 1.5%


7/30

FoundryShop

Foundry is divided into following sections:-

Sand plant systems.

Core making and baking.

Moulding section.

Melting section.

Testing lab.

Core setting and metal pouring section.

Fettling and primary section.


8/30

Properties of MouldingSand:-

Porosity: Sand must be porous in order to allow the escape of any ai

moisture present or generated in mould when the hot metal is pour

Plasticity: Sand must be plastic so that it can be shaped to form patt

Adhesives:Sand must be adhesive i.e. capable of attaching itself to abody so that it will cling to the sides of the moulding box and to thewhich it is moulded or supports provided in flask.

Cohesion:The ability of the particles to stick together is necessary topattern to be removed without breaking the mould and also to withhigh temperatures and the flow of molten metal as it enters into thMoreover, it must retain cohesion on becoming hot.


9/30


10/30

MaterialTesting

Metals are tested in two labs:

Mechanical Lab

1. Universal Testing machine

2. Brinell Hardness Test

3. Rockwell Hardness Test

Chemical Lab

1. Chemical composition

2. Microstructure


11/30

SmallParts

The small part division is further divided into the following s

Turrets

Gears

Accessories

Round

Non-round

Spindle

Sheet metal


12/30

TURRETS

This division is so named because of its turret because of turrTurrets are machines, which are used for mass production.

Various machines in the turret section are:

Drum turret lathe

Centre less grinding machine

Polygon drilling machine

Lathe Radial drilling machine

Bench drilling machine

Vertical milling machine

Horizontal milling machine

Cylindrical grinder

Surface grinder


13/30

Components manufactured in the turret section are as fol

Screw, Special screws, Thick washer, Hard Washer, Screw plug etc.

Operations performed in this section are:- Turning

Surface grinding

Internal grinding

Cylindrical grinding

Polygon grinding Drilling

Components Manufactured:-

Spares, Rings Studs, Nuts, Holders, Micro Nut etc.


14/30

GEARS

All the gears that are used in machine tool division are made in this se

EQUIPMENT

HORIZONTAL HOBBING MACHINES
http://en.wikipedia.org/wiki/File:Hobbing_machine.jpghttp://en.wikipedia.org/wiki/File:W%C3%A4lzfr%C3%A4smaschine_CNC_2001.jpg


15/30

The different kinds of gears manufactured in this section are:-

Worm gears

Bevel gears

Spur helical gears

Machines installed in the gear section are:-

Center Lathe

Gear Hobbing Machine

Combined Turning And Drilling Lathe

Horizontal Broaching Machine

Vertical Broaching Machine

Cylindrical Grinding Machine

High Production Gear Hobber

Bevel Gear Generator

Gear Grinding


16/30

NON-ROUNDS

All the non-round jobs that are to be used in machines are machined here.

Components manufactured:

Blocks, rectangular strips, Gibs, pump body, stop block, adjustable plate, shift fork e

Operations performed:

Marketing

Vertical milling

Drilling

Fitting Grinding

Machines used in this section are:

Horizontal milling machine

Vertical milling machine

Surface grinding machine


17/30

SHEETMETAL

This section includes the cutting of sheets, bending of sheets at varioVarIous operations like drilling, bending, shearing etc., are complete

section.

Some of the areas where sheet metals are used are: For outer body manufacture

For making junction boxes in CNC machines.

The machines used in this section are: Radial arm drilling machine Nibbling machine

Bending machine

Shearing machine (hydraulic)

NC Shearing

CNC


18/30

CNCSECTION

This section has the CNC machines providing the main operation of sdimensions, finishing etc. It includes following machines:

Type of machines No. of machines

Straight Tool Changer 5

High Pt. Internal Grinding m/c 1

Vertical Mulling (NC) 1 Vertical Tool Changer 2


19/30

HEAT TREATMENTSECTION

In this section, various operations like annealing, normalizing, hardenincarburizing are performed at various temperatures to improve the phys

mechanical properties of the material. This section has the furnaces, hoand various types of tanks containing different salts & chemical to perfovarious operations.

Regardless of the reason for the heat treating, the basic pro

the same has three steps:- Heat the metal to a specific temperature

Hold the metal at that temperature for a specific amount of time

Cool the metal in a specific manner

HI TECH


20/30

HI-TECHASSEMBLY

INTRODUCTION

It would be incorrect to state that present manufacturing belongs to n

controlled machines rather computer numerically controlled would beappropriate to say. With Larger and Larger proportion of manufacturibecoming in job or small batch production of a variety of components

Often complex shapes require high precision, the need for flexible Authas always been felt. And this is the era of machine tool automation. automation is implemented in the machine tools in the form of NC antechnology. Today HKT is producing a lot of Conventional Machine To

specialized functions and mostly CNC products.

AND FEW OF HMT MACHINES ARE: HMC 600 HMT 630 HMC 500


21/30

The following four heat treatment processes are tcommonly used:

Annealing

Normalizing

Stress Relieving

Quench Tempering


22/30

HEAVYPARTS

It is the shop which gives the shape to the castings which come from ththis shop after being painted rough. In this section various operations a

performed by the help of planners &milling machines.

This section is generally divided into two sections basically

PLANNING

BORING


23/30

GRINDINGINTRODUCTION

It is a process of removing material in form of small chips by the abrasive actrevolving wheel on the surface of work piece the wheel used for performingaction is called grinding wheel. It is basically a finishing process used for prodimensional and smooth surface finish.

GRINDING WHEEL

In machine tools generally wheel containing SIC as abrasive is used. But AluOxide can also be used.


24/30

GRINDING MACHINES CNC GRINDING MACHINE (made by STIDER)

SURFACE GRINDING MACHINE

CYLINDER GRINDING MACHINE

THREAD GRINDING MACHINE

MILLING

Milling is the process of removing metal by feeding the work against amultipoint cutter. In milling operation the rate of metal is rapid as cutat a high speed and has many cutting edges.

TYPES OF MILLING MACHINE In machine shop milling is done with following machines:

JIG BORING MACHINE (made by VOLTAS)

HORIZONTAL BORING MACHINE

CNC MACHINES (made by HMT)

VERTICAL UNIVERSAL MILLING MACHINE

GPM


25/30

GPMASSEMBLY

SCRAPING

INTRODUCTION

Scraping is very useful and significant process of removing metal in vequantity, which is used in assemble process.

Why Is Scraping Done?

By scraping we get number of bearing points. So load is uniformly dis

For alignment with greater accuracy

For having good appearance.

Tools Used

Scrapper

Spirit level

Angle gauge


26/30

CNCASSEMBLY

INTRODUCTION

This is one of the most important and lucrative shop for the plant whereassembled. The products prepared at other shops, purchased and impoform the various countries are combined here and the output is known far discussed about design lab, the o/p of that lab is used here. The desmachine according to application and as per demand is taken and the ostarts. The parts are prepared in Hi-tech Small Parts shops. Then they acombined to from Head, column, bed, ATC Assembly etc. electrical wirin

made. Electric cabinet of machine is taken from the concern shop and tattached to the machine.

After attaching the operating system and computer hardware then the nrefers to Electronics lab. The concern deptt. Examines the exact circuitryof the machine. If the machine is working well then the last mode is to accuracy of the operation and the minimum time of various operations.these activities its time to decorate and surround it for its good lookingsafety purposes. Now the machine is ready for SALE.

ELECTRICAL &


27/30

ELECTRICAL &ELECTRONICS ITEMS

PROXIMITY SWITCH

LIMIT SWITCH

CIRCUIT BREAKER

OVERLOAD RELAYS

CONTRACTORS

FUSE PRESSURE SWITCH

INTRODUCTION TO NC

FEED BACK DEVICE

TOOL


28/30

TOOLROOM

INTRODUCTION

This is one of the necessary sections in any industry which deals with requirement of tool of its other section. In HMT the tool room has beinto two sections one in HIGH-TECH and NEOLOGY section and other ione. In the high technology section the more complex machinery implike Jig boring machines and CNC cylindrical grinding machine. As botmachine provide the better accurate finishing this is up to microns.

JIG BORING


29/30

JIG BORINGMACHINE

A metal-cutting machine for finishing holes, planes and slots with a hilocation of centres or surfaces without the use of special attachmentsalignment.

Jig-boring machines are used for boring, drilling, counter-sinking, reammilling, and other types of finishing in individual and small-scale prodduring the manufacturer of cutting and measuring tools, jigs, dies, andcomponents of machines and instruments.

There are two types of these machine tools: double-sided (gantry) maa one-movement table and open-sided (single-sided, overhanging) ma

a two-movement table. In open-sided machines the spindle head movertically; in the double-sided machines it moves horizontally along thcrosspiece, which can travel in a vertical direction.

Its mains parts are:

Heavy base

Two vertical columns

CNC ASSEMBLY


30/30

CNC ASSEMBLYSECTION

Input Unit

Control Unit

Memory Unit

Arithmetic Unit

Output Unit

Operator Interface

Machine Interface

CNC System

Summer Training AT HMT MACHINE TOOLS

Documents