Industrial Information - High Speed Milling Machines

By: John Morris

High speed machining is a proven stipulation characterized by low cutting forces and high metal removal. High Speed Milling is a technique used in the CNC Milling Industry that combines high spindle speeds with increased feed rates. This results in a high chip-forming rate and lower milling forces, producing an improved surface quality and closer tolerances. In high speed milling, the electronics can make all the difference. The right CNC coupled with other elements of the control system can let a slower machine mill a given form faster than a machine with a higher top feed rate.

1. High Speed Uses

High-speed CNC milling is used, for example, to machine the titanium rotors of the first high-pressure compressor stages of the EJ200 engine. High speed CNC milling allows cost-effective milling of the airfoil geometry from the solid. By subsequent finishing operations the planned surface finish is achieved. The CNC milling which caters to high speed must be structured with an axis movement system that is suitable for machining.

2. Axis Movement

The high-speed CNC milling machines required for the process must be fitted with an axis movement system suitable for machining blisks, which should be at least 5 axes simultaneously, depending on the milling task involved and an efficiently high-speed control system.

3. 3D Surfaces

High Speed CNC milling machines working on 3D surfaces in any materials produce a finer surface finish and higher accuracy in less time that the traditional milling machine. Acceleration is the most critical factor that affects the high speed machining. Since one or more axis are always increasing or decreasing velocity in a 3-D cut, ultimate feed rate is directly related to acceleration

4. What Can A High Speed Control Possibly Do?

A CNC milling machine which possesses a higher structural stiffness has a greater potential acceleration rate. Box shaped high speed CNC milling machine, like Bridge and Gantry is the mostly widely used types of High speed CNC milling tools. The overhead type Gantry exudes the highest stiffness, acceleration and accuracy among other high speed CNC milling tools. Due to its scalability, this machine type is available in sizes to match the work piece, from small to large.

In usual terms, it simply gives you the ability to finish one task faster and move along to the next sooner, making work output higher. In drilling and tapping, this can result in faster hole-to-hole times, quicker spindle reversals for tapping, and substantial cycle-time reductions. The most dramatic benefits, though, come in 3D designs machining. Few, drilling and tapping jobs require a million lines of machine codes. In molds, dies, patterns, and prototypes, complex surfaces comprising a million or more line segments are not at all uncommon. Saving just a fraction of a second per move can result in substantial cycle-time improvements.

5. Downsides - When Is Fast Too Fast?

But despite all these benefits, in high milling, the tool path segments can be so short that a machining center moving at a high feed rate can't accelerate or decelerate fast enough to make direction changes accurately. Corners may be rounded off and the work piece surface may be gouged. Look-ahead is one answer. Look-ahead capability can let the CNC read ahead a certain number of blocks in the program, to anticipate sudden direction changes and slow the feed rate accordingly.

6. Additional Benefits:

- Improved accuracy
- Better fit
- Superior finish
- Better life
- Produce more work in less time
- Improving the accuracy and finish
- Reducing polishing and fitting time
- Tools simply last longer because their chip load is more consistent

Article Source: http://www.bigfreearticles.com

About the Author:
For more great milling machine related articles and resources check out http://www.millingmachineadvisor.com

Please Rate this Article

Comments

Share This Article - Quick and Easy Using This Button:

Add to Onlywire

Click the XML Icon Above to Receive Technology Articles Via RSS!

Read More Articles From - Home | Technology

Brush Up On The Latest Gizmos For The Office By: Dominic Donaldson - The world of gadgets is moving at a rapid rate however Intel have recently predicted that the rise of the robots will not be for another 40 or so years. To curb your disappointment this article examines the latest in gadget technology for the office, to indulge the techno-holic in you. Recently the gadgets market has been saturated with relatively pointless USB toys so today we are looking at more practical gizmos. First up we have something every business person can use, the Targus Mini USB Business Car Scanner.
Tags: technology, gadgets, office hardware, shredders, usb gadgets
Discover The Latest News From The World Of Audio By: Dominic Donaldson - Every year all of the sectors of the electronics industry gear up for their trade show where they can flex their technological muscle. This year in Berlin it is expected that with HDTV hitting the mainstream, the latest models of HD ready TV sets will dominate the show. There has been some news on other fronts and this article delivers the latest audio news summarising the most recent developments from the IFA. There have been several additions from Griffin technology the self proclaimed leader in iPod technology covering iPhones, iPods and anything related.
Tags: technology, audio news, audio equipment, audio reviews, ifa news
The Internet Now Offers New Media for the Nintendo Wii By: Ron Subs - You knew you could go down to the store and pick up new games for your Nintendo Wii, but did you know that you could also do it from the comfort of your living room? Since its release two years ago the Wii has revolutionized home entertainment, and it continues to do so by offering its players the chance to download games, music, video and other media onto their personal computer, store it on a disk or memory chip and enjoy it on their Wii.
Tags: technology, wii, download wii games, wii games online
Hydrogen Fuel from Water By: Dan Huffman - The ordinary people felt that the term water fuel is a paradoxical term. They know many uses of water. But cannot think of the water as the resource of fuel. You cannot blame them really. The nature is full of lot many similar paradoxes. It is possible to get hydrogen fuel from water. In this small article about hydrogen fuel from water we will get all the info about this topic of hydrogen fuel from water.
Tags: technology, hydrogen fuel cell, water to fuel, hydrogen fuel from water, hydrogen cell generator, hydrogen cell kits, hydrogen fuel plans
People Search by Phone –Your assistance in knowing someone By: Watoy Israel - Looking back, it is really hard to locate or look for someone. You can’t do the work alone. Investigators are always to the rescue. They will be the one perform the job of looking for someone. Of course, you have to prepare a bigger amount to tap the investigator and the result may be that reliable but you have to wait, till he gathers all the information and presents it to you. But those were the days.
Tags: technology, people search by phone
Cell Phone Reviews By: Isabelle Lucas - In today’s hectic life cell phone has become the easiest and the most convenient means of communication as a person can communicate with anybody from any place in the world. This way he can keep in touch with his near and dear ones and with his colleagues and office people. It not only helps him to communicate regularly but is also helpful when there is some kind of emergency and he has to call for immediate help.
Tags: technology, cell phone reviews, hand phone
Discover The Latest Technological News By: Shaun Parker - The world of technology is in disarray and not just because of the old news that is the Yahoo takeover by Microsoft. The EU are at loggerheads with the US over the tariffs that are charged for high tech goods. The problem is focussed around the EU hiking up prices on a number of goods including multi-function printers and TV set-top boxes that have internet capabilities.
Tags: technology, technology news, company news, business news, it news
Photo Books, Prints And The History Of Photography By: Shaun Parker - Photography is centuries old. When photography first became popular around about the turn of the century it was presided over by experienced experts. It is no longer necessary for people to be experts in photography to take good photos. Indeed the advent of digital cameras has seen it become easier to take photos and with photo technology now available on mobile phones the number of people taking photos has increased. The quality of printing has improved alongside the standard of cameras. This means that many people now have access to technologies in their own home.
Tags: technology, photo, books, photos, prints
How to Get Started in Performing Phone Number Look Up By: Michel David - In the past, you needed to a hire private investigator if you wanted to have information about a person. These days - not anymore! With the internet, you can find and locate almost everything. If you are looking for information or if you are seeking for a person behind a phone number that you have, you can easily locate it by using the internet. If you have a phone number but do not know who owns it, you will naturally want to know the owner of it.
Tags: technology, reverse phone lookup
How To Increase Kilometers Per Liter With HHO Generators By: Mark Roberts - Would you like to know how to improve kilometers per litre. Fuel prices go up or vary from day to day and globally some countries pay more than we do for our petrol. You could buy a hybrid but they cost much more compared to comparable vehicles. If you keep up on the maintenance and repairs of your current vehicle you should be able to maintain peak performance of he engine and in some cases if an engine diagnostic is performed and a problem is discovered you could find that you increase kilometers per litre.
Tags: technology, save gas, save gasoline, improve gas mileage, gas saving devices, gas saving device, cars