Summer Training AT HMT MACHINE TOOLS
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Transcript of Summer Training AT HMT MACHINE TOOLS
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TOOLS
atHMT MACHINE TOOLS LTD.
SUBMITTED FOR PARTIAL FULFILLMENTOF
BACHELOR OF TECHNOLOGYMECHANICAL ENGINEERING
Submitted By:-
ARPIT NAGPAL
11115150 (D1)
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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.
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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%
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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.
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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.
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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
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SmallParts
The small part division is further divided into the following s
Turrets
Gears
Accessories
Round
Non-round
Spindle
Sheet metal
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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
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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.
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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 -
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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
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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
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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
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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
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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
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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
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The following four heat treatment processes are tcommonly used:
Annealing
Normalizing
Stress Relieving
Quench Tempering
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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
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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.
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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
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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
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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 &
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ELECTRICAL &ELECTRONICS ITEMS
PROXIMITY SWITCH
LIMIT SWITCH
CIRCUIT BREAKER
OVERLOAD RELAYS
CONTRACTORS
FUSE PRESSURE SWITCH
INTRODUCTION TO NC
FEED BACK DEVICE
TOOL
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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
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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
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CNC ASSEMBLYSECTION
Input Unit
Control Unit
Memory Unit
Arithmetic Unit
Output Unit
Operator Interface
Machine Interface
CNC System