Thursday, 13 July 2017

How Milling Machine Works? Full explained

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How Milling Machine Works? Full explained


Introduction

Milling is the cutting operation that removes metal by feeding the work against a rotating, cutter having single or multiple cutting edges. Flat or curved surfaces of many shapes can be machined by milling with good finish and accuracy. A milling machine may also be used for drilling,  making a circular profile and gear cutting by having suitable attachments.


Milling Machine working explained

Working Principle:

The work piece is holding on the worktable of the machine. The table movement controls the feed of work piece against the rotating cutter. The cutter is mounted on a spindle or arbor and revolves at high speed. Except for rotation the cutter has no other motion. As the work piece advances, the cutter teeth remove the metal from the surface of work piece and the desired shape is produced.

Horizontal Milling Machine Construction:

The main part of machine is base, Column, Knee, Saddle, Table, Over arm, Arbor Support and Elevating Screw.

1. Base: It gives support and rigidity to the machine
2. Column: The column is the main supporting frame mounted vertically on the base
3. Knee: The knee is a rigid casting mounted on the front face of the column. The knee moves vertically and this movement enables to adjust the distance between the cutter and the job mounted on the table. The adjustment is obtained manually or automatically by operating the elevating screw provided below the knee.
4. Saddle: The saddle rests on the knee and constitutes the intermediate part between the knee and the table. The saddle moves transversely.
5. Table: The table provides support to the work. The table is made of cast iron, its top surface is accurately machined and carriers slots which accommodate the clamping bolt for fixing the work. The worktable and hence the job fitted on it is given motions in three directions:
a). Vertical (up and down) movement provided by raising or lowering the knee.
b). Cross (in or out) or transverse motion provided by moving the saddle in relation to knee.
c). Longitudinal (back and forth) motion provided by hand wheel fitted on the side of feed screw.
6. Overarm: The Overarm is mounted at the top of the column and is guided in perfect alignment by the machined surfaces. The Overarm is the support for the arbor.
7. Arbor support: The arbor support is fitted to the Overarm and can be clamped at any location on the Overarm. The arbor is a machined shaft that holds and drives the cutters.
8. Elevating screw: The upward and downward movement to the knee and the table is given by the elevating screw that is operated by hand or an automatic feed.

 CLASSIFICATION OF   MILLING

Ø Peripheral Milling

In peripheral (or slab) milling, the milled surface is generated by teeth located on the periphery of the cutter body. The axis of cutter rotation is generally in a plane parallel to the work piece surface to be machined.
Ø Face Milling
In face milling, the cutter is mounted on a spindle having an axis of rotation perpendicular to the work piece surface. The milled surface results from the action of cutting edges located on the periphery and face of the cutter.
Ø End Milling
The cutter in end milling generally rotates on an axis vertical to the work piece. It can be tilted to machine tapered surfaces. Cutting teeth are located on both the end face of the cutter and the periphery of the cutter body.

METHODS OF MILLING
Ø Up Milling
Up milling is also referred to as conventional milling. The direction of the cutter rotation opposes the feed motion. For example, if the cutter rotates clockwise, the work piece is fed to the right in up milling.

Ø Down Milling
Down milling is also referred to as climb milling. The direction of cutter rotation is same as the feed motion. For example, if the cutter rotates counterclockwise, the work piece is fed to the right in down milling.

The chip formation in down milling is opposite to the chip formation in up milling
Types of Milling Machines
Milling machines are among the most versatile and useful machine tools due to their capabilities to perform a variety of operations. They can be broadly classified into the following types:
Ø  Column and knee type of milling machines
Ø  Bed type
Ø  Rotary table
Ø  Tracer controlled


     Horizontal Milling Machine             Vertical Milling Machine
Column & Knee type Milling Machines

Used for general purpose milling operations, column and knee type milling machines are the most common milling machines. The spindle to which the milling cutter is may be horizontal (slab milling) or vertical (face and end milling).
The basic components are:
Ø  Work table, on which the work piece is clamped.
Ø  Saddle, which supports the table and can move transversely.
Ø  Knee, which supports the saddle and gives the table vertical movements for adjusting the depth of cut.
Ø  Over arm in horizontal machines, which is adjustable to accommodate different arbor lengths.




Bed type Machines

In bed type machines, the work table is mounted directly on the bed, which replaces the knee, and can move only longitudinally. These machines have high stiffness and are used for high production work.



Rotary Table Machines

Rotary table machines are similar to vertical milling machines and are equipped with one or more heads to do face milling operations.


Tracer Controlled Machines

Tracer controlled machines reproduce parts from a master model. They are used in the automotive and aerospace industries for machining complex parts and dies.


Advantages
1.       The metal is removed at a faster rate as the cutter has got multiple cutting edges and rotates at a higher speed.
2.        It is possible to perform machining by mounting more than one cutter at a time.
3.        The table of the machine can be moved to an accuracy of 0.02mm.
4.       It is very useful since various cutters and precise tools can be machined.
5.       Special attachments can be mounted on the machine to perform operations that are performed in other machine tools.
6.       The quality of the shop is enhanced with the presence of this machine

Disadvantages
1.       The cost of the milling machine is high.
2.       As milling cutters cost high, the investment for procuring tools is more.

3.       The production cost will increase if we carry out the operations performed in a shaper or a drilling machine with a milling machine.


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How Do ATMs Work? Full ATM working Explained

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How Do ATMs Work? Full ATM working Explained


An ATM is a Simple machine that has two input and four output devices attach to it. Like every machine ATM also have to communicate and process a certain information from with the user and data terminal. Host processer does the communication. The host process is analogues to the internet service provider (ISP) through which all the ATM machines are available to the cardholders.


How ATM work internally fully explained



Most host processes is connected with the leased line or dial up machines. Leased line is connected with Four wire through dedicated line of control. Dial Up connection are connected using a modem or through internet or phone.

Leased-line ATMs are popularly for very high-volume place because of their thru-put power, and dial-up ATMs are preferred for retail merchant locations where cost is a greater factor than thru-put. The initial cost for a dial-up machine is less than half that for a leased-line machine. The monthly OS for dial-up are only a fraction of the costs for leased-line.
The host Processer may be owned by a bank or any financial institution or by an independent Internet service providing company. The process is that only bank owned data processor support only bank related calls where Independent service providing company support merchant-owned Machines.

ATM has two input and four Output devices, let discuss them here in detail.
Input devices

1.   Card reader: The card reader function is to read the code on your debit card or Credit card. The host processor uses this information to read the instruction on the card.
2.   Keypad: The keypad enable the card holder that which type of transection he want, either he want to transect the money online or the payment he want in cash in which type of amount or in what chan.
ATM has Four-output device
1.   Speaker: The speaker function is to communicate visually with the cardholder and provide feedback for the user command.

2.   Visual Screen: The visual screen help the user money transection history. The screen has LED which is monochrome light. 

1.    Recipient printer:
           This device provide the cardholder a recipient of his transection.
2.   Cash dispenser: 
             This device is the heart of the ATM the other one that you may called the heart called the base of the ATM.

Sensing eye
The cash dispenser mechanism that identify the amount on the card using electric signals to the ATM, the dispenser calculate the whole amount of transection on the card. The journal information is stored for two years and also with a hard copy.
Besides that electric eye there is a sensor in the cash dispenser mechanism has, the function of the sensor is to calculate the thickness of the bill, if two bills are struck together then the other one is send to bin. This bin also called rejected bin. The same happens when the bill is either folded or muddled.
If more number of bills are rejected this will produce in alarming situation in which either it is detected that there is a problem with the Machine or with the card holder.

So what happens when you insert card in ATM?

When a cardholder want to transect the money he enter Card in the ATM machine and type the desired amount on keypad. The ATM transects this information to the host processor, which find out the cardholder bank account or desired institution. If the card holder want cash, then the electronic fund transfer is take place from bank account to host processor account. When the ATM machine receive the instruction that the user has enough balance to cash out, the ATM show him what type of chin he need, like note of $10, $100 or how many notes of $100. All these information are noted and machine do what has been decided by the cardholder.

ATM security

It is important to use a well light in public ATM so that the user can easily see the keypad and other things related to ATM; money transection procedure.
Many banks have the rule that you need to add the pin number written on the card in order to transect money from ATM machine. Here are some PIN tips. (PIN stand for personnel identification number.
A: Don’t write your PIN on a page or somewhere else, try to remember the code, if you lost it and someone found it then will be in trouble.

B: Only use your card when you approach ATM, if you are waiting for ATM and pick your card someone may take from you by force.

C: Don’t enter your PIN when you are surrounded by People or someone else is going on the way.

D: Don’t ever handle your PIN to close friend or some one who you can trust.

E: Don’t keep your car running when you have a walk in ATM, take keys with your self and try to lock door and windows of the car.

F: If someone is trying to feel you discomfort able leave the transaction and let other do the transaction.

G: Always use that machine which is located in well light and safe place other wise either you end up losing your money or losing your PIN.

H: Never ever try to transect in late night time, may someone is following you and can snatch the money and the card from you.

The entry of your four-digit personal identification number (PIN) on the keypad should still be obscured from observation. When you enter your PIN try to stand staright and cover the screen.

In this article we discuss the internal parts of the ATM machine, how host processor help in the ATM mechanism and at the second last topic we study how ATM works when you insert your Card and how it transfer money, in the last section we discuss some safety issues and precautions needed to take by the card holder to perform transection using ATM machine.
If you still have any problem feel free to comment and share you views.

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Sunday, 2 July 2017

Helplogger.blogspot.com Earning Per Month

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How Much Helplogger.blogspot.com Earns

Helplogger is a Blogging and Blogger.com Related Site. Helplogger has a Alexa rank of 4000s in India. It is one of the best platform for those people who want to start over.

How much helplogger earns per day


How much helplogger earnsHelplogger is a hub for blogger.com related searches and have worked in SEO, Blogger widgets, AdSense and Earn Online.Helplogger has a total traffic per day range from 10k to 15k and have a per day earning is $60 to $70, but this is just estimation, their earning may be higher than that.Helplogger.blogspot.com is an example that we need to take for those people who considering free platform worthless.This blog does not use Affiliate products or anything else. The only monetizing source is AdSense. This is one of the best platforms for day bloggers.If the admin of Helplogger is earning that much amount of money, you can do that to earn.Here is a Free guide that which free platform you need to chooseHere are few tips for you if you want to start blogging at free platform1.     Hard Work
2.     Knowledge of SEO
3.     Patience
4.     Consistent
I started this http://techmintle.blogspot.com just because I inspire from this site and think that if anyone is earning because of this platform then why not me?
I know there are some of the drawbacks that I have, but as famous Bill gates Quote is “You never be 100% Prepare for a thing, Just Start it”Helplogger is working for years to achieve a place where it is right know.To get traffic you also need to have a social media backup and Helplogger use this strategy in a very good way, he has 15k Facebook Fans and a more then that just remind his blog name, like me.I daily visit this blog. At his amusing content and I may claim that I read all his blog posts.He is an amusing Guy, Reply to all comments and help in any situation if you ask in comment section of his blog, that is why he is on the top.You can start today, earn a lot of money and all for free but this need that four things that I mention in the upper paragraph. Related Posts

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Saturday, 1 July 2017

Industrial engineering internship: How to find internship as IE Student

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Industrial engineering internship: How to find internship as IE Student


Here in this article I am going to tell you how to get internship as an industrial engineer. All you need to read this article with care and not to offend with regrets; it is the part of life.
When I was finding internship, I feel a lot of hardship, but at the end that hardships pay off. Going from college to hostel, in the end of the years is to find any site that offers any job for Industrial engineering student.

Internship picture

Industrial engineering scope is in every type of industry and every type of businesses.
Here is the full guide to get internship as industrial engineering student.

1.      Have good academic records
2.      Have an impressive Resume
3.      Active on social media groups
4.      Find companies that offer internship
5.      Approach companies
6.      Approach University Career development centers
7.       Approach your seniors working in different sectors
8.      Find solution for a problem for a company

1.      Have a Good Academic Record:


Your good academic record shows that you are doing work, that interests you and have the courage to solve company problems and made something for company that is valuable and make something that bring quality and value to their products and services. You can only do that if you have strong command over your industrial engineering academic learnings.

2.      Have an impressive Resume:


Resume shows the ability within you and everything that you have or do in your industrial engineering studies. Make an impressive resume that is attractive enough to attract the reader. If you do not have any experience related resume making then you may use some samples, you can download it for free from internet, or you can buy the service using freelancing site like Fiverr.com or Freelancing, where professionals are sitting to offer service for $5

3.      Active on social media


One thing I learn in my life is bad the social media is for your time but it also help you to find a career or your dream job or your dream internship. Most of my classmates get a lot of things that I easily get but just because I am not active on social media I have a disadvantage, follow those groups which is related to your internship query, active notification for that group. When someone post on that group you will easily check it, this will reduce your time wastage on social media.

4.      Find companies that offer internship:


You can find those companies that offer internship using Google, you have to type the relevant keyword on Google search and Google will automatically display the relevant result of Industrial engineering Internship providing companies in X (Your Place).


5.      Approach companies


One of the best technique to get internship as industrial engineering student is to approach companies either by physical means or through website. Keep in mind when you approaching company tell them their problems and at the same time tell that that you are going to solve this problem. You can also pre-search on the company and make it sure that the company is going to be more profitable under the umbrella of your solution.
This approach has more probability that you are selected as internee in the company and if you do will may be, they tell you in advance that you are our future employee.

6.      Approach university career development center:

Some universities in Asia and Africa have a mini institution in university that informs students of possible job or internship. Join their social media page; this will help you to get internship because they announce internships on their page, whenever they receive it.


7.      Approach your seniors, working in different sectors

This helps many people. You need to build connection with the follow seniors to get in to the pool of company you want to join.
Sometimes your seniors friend inform you about the possible job or internship, so it is a very good act to make connection with your seniors.


8.      Find solution for a problem for a company

Research the company, find out what they are missing, do some hard work to solve the problem for the company and let them know what you have done.
All these Eight methods while help you as an industrial engineering to find internship in any local or multinational company.
Hope this article helps you to find internship as Industrial engineering

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