Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Machine Tool shopping experience:
1. Compare - without doubt the biggest advantage that the Machine Tool offers shoppers today is the ability to compare thousands of Machine Tool at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Machine Tool? Wrong! If the Machine Tool is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Machine Tool then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Machine Tool? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Machine Tool and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Machine Tool wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Machine Tool then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Machine Tool site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Machine Tool, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Machine Tool, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
A
machine tool is a powered mechanical device, typically used to fabricate metal components of machines by machining, which is the selective removal of metal. The term
machine tool is usually reserved for tools that used a power source other than
human movement, but they can be powered by people if appropriately set up. Many historians of technology consider that the true machine tools were born when direct human involvement was removed from the shaping or stamping process of the different kinds of tools. For instance, they consider that Lathe (tool) machine tools were invented around 1751 by
Jacques de Vaucanson because he was the first to mount the cutting instrument on a mechanically adjustable head, taking it out of the hands of the operator.
Overview
Machine tools can be powered from a variety of sources. Human and animal power are options, as is energy captured through the use of
waterwheels. However, machine tools really began to develop after the development of the
steam engine, leading to the Industrial Revolution. Today, most are powered by electricity.
Machine tools can be operated manually, or under automatic control. Early machines used flywheels to stabilize their motion and had complex systems of gears and levers to control the machine and the piece being worked on. Soon after
World War II, the Numerical control, or
numerical control, machine was developed. NC machines used a series of numbers punched on
paper tape or punch cards to control their motion. In the 1960s,
computers were added to give even more flexibility to the process. Such machines became known as
CNC, or
computerized numerical control, machines. NC and CNC machines could precisely repeat sequences over and over, and could produce much more complex pieces than even the most skilled tool operators.
Before long, the machines could automatically change the specific cutting and shaping tools that were being used. For example, a drill machine might contain a magazine with a variety of
drill bits for producing holes of various sizes. Previously, either machine operators would usually have to manually change the bit or move the work piece to another station to perform these different operations. The next logical step was to combine several different machine tools together, all under computer control. These are known as machine centers, and have dramatically changed the way parts are made.
From the simplest to the most complex, most machine tools are capable of at least partial self-replication since they are machines, and produce machine parts as their primary function.
Examples
Examples of machine tools are:
When fabricating or shaping parts, several techniques are used to remove unwanted metal. Among these are:
Other techniques are used to
add desired material. Devices that fabricate components by selective
addition of material are called
rapid prototyping machines.
Several regions of the United States became centers for machine tool development, including Cincinnati, Ohio, Rockford, Illinois and Springfield, Vermont.
A collection of machinery showing photographs of the main types of metal working machinery is online at www.museumofmaking.org
See also
External links
- National Institute for Metalworking Skills Standards download page
- U.S. Department of Labor Bureau of Labor Statistics Occupational Outlook Handbook
- American Precision Museum—A museum that preserves historically important machine tools and helps to educate on the history of machine tools
A
machine tool is a powered mechanical device, typically used to fabricate metal components of machines by
machining, which is the selective removal of metal. The term
machine tool is usually reserved for tools that used a power source other than human movement, but they can be powered by people if appropriately set up. Many historians of technology consider that the true machine tools were born when direct human involvement was removed from the shaping or stamping process of the different kinds of tools. For instance, they consider that
Lathe (tool) machine tools were invented around
1751 by
Jacques de Vaucanson because he was the first to mount the cutting instrument on a mechanically adjustable head, taking it out of the hands of the operator.
Overview
Machine tools can be powered from a variety of sources. Human and
animal power are options, as is energy captured through the use of waterwheels. However, machine tools really began to develop after the development of the
steam engine, leading to the
Industrial Revolution. Today, most are powered by electricity.
Machine tools can be operated manually, or under automatic control. Early machines used flywheels to stabilize their motion and had complex systems of gears and levers to control the machine and the piece being worked on. Soon after World War II, the Numerical control, or
numerical control, machine was developed. NC machines used a series of numbers punched on paper tape or punch cards to control their motion. In the 1960s, computers were added to give even more flexibility to the process. Such machines became known as
CNC, or
computerized numerical control, machines. NC and CNC machines could precisely repeat sequences over and over, and could produce much more complex pieces than even the most skilled tool operators.
Before long, the machines could automatically change the specific cutting and shaping tools that were being used. For example, a drill machine might contain a magazine with a variety of drill bits for producing holes of various sizes. Previously, either machine operators would usually have to manually change the bit or move the work piece to another station to perform these different operations. The next logical step was to combine several different machine tools together, all under computer control. These are known as machine centers, and have dramatically changed the way parts are made.
From the simplest to the most complex, most machine tools are capable of at least partial self-replication since they are machines, and produce machine parts as their primary function.
Examples
Examples of machine tools are:
When fabricating or shaping parts, several techniques are used to remove unwanted metal. Among these are:
- EDM (electrical discharge machining)
- Grinding
- Multiple edge cutting tools
- Single edge cutting tools
Other techniques are used to
add desired material. Devices that fabricate components by selective
addition of material are called
rapid prototyping machines.
Several regions of the United States became centers for machine tool development, including
Cincinnati, Ohio,
Rockford, Illinois and Springfield, Vermont.
A collection of machinery showing photographs of the main types of metal working machinery is online at www.museumofmaking.org
See also
External links
- National Institute for Metalworking Skills Standards download page
- U.S. Department of Labor Bureau of Labor Statistics Occupational Outlook Handbook
- American Precision Museum—A museum that preserves historically important machine tools and helps to educate on the history of machine tools
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