How to set up your Boring Bars for success!

[Music] boring bar applications setting your tools up for success understanding that in boring applications we are restricted by the inside diameter and length of a component feature and these two features will help us select the proper bar for a particular application some of the more critical factors we will cover in this video are effective chip evacuation how to properly hold the bar and how to select insert geometry based on the cutting conditions modern high performance boring tools must be clamped with high stability so as not to introduce a weak link in the setup to start it is important to clamp onto a minimum of three to four times the bar's diameter to help equal out the cutting forces split collars and sleeves are highly recommended to create the most contact between the bar itself and the holder be sure to use quality sleeves and adapters to support tooling optimizations at high stock removal rates the chips need to be evacuated from the hole at an increased rate so as not to damage the work piece effective chip evacuation can be aided with proper coolant flow and high pressure systems in some applications it may be beneficial to bore upside down to allow chips to evacuate more freely as they are being pulled centrifugally to the outside walls of the bore diameter a positive style insert such as a dpmt style combined with a more positive macro geometry will help generate some of the lowest cutting forces when our application allows us to we want to choose the most positive geometry with a chip breaker suitable for the required cutting data in some boring applications you may have to consider a slight compromise on wear resistance and cutting edge strength in order to avoid vibrations or improper chip control for semi finishing and roughing applications in short overhang setups consider a negative style insert such as a cnmg for example keep in mind that negative style inserts can consume up to 20 percent more horsepower on average and significantly create more cutting forces compared to a more positive style insert that significantly reduces the cutting forces being generated as we all know every boring bar application is uniquely different to make it easy to choose we can refer to the recommended type of bar based on the maximum overhang to aid in proper selection of the boring bar material type shown here it is highly recommended to start considering a carbide or heavy metal bar as you surpass four to five times the bar diameter overhang internally damped bars have a significant impact on optimizing speed and feed capabilities and reduce vibration tendencies making them a strong productivity booster in the long length to diameter ratio applications that exceed eight times the bar diameter the patriot high performance utilizes internally damp tunable technology you can see and hear the difference between the conventional steel boring bar and our patriot high performance boring bar patriot high performance damped bar systems up to 14 times diameter reach factory pre-tuned and full adjustable tuning capabilities based on your specific application increase productivity with higher feed rates and improve surface finishes in deep bores modular system offers versatility to accommodate multiple applications such as boring threading grooving and more we also offer fully customizable anti-vibration bars through arch specials making it once again easy to choose easy to use training for patriot high performance and other arch products is always available

Channel: ARCH Global

Views: 4,873

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Id: GWo1BNX20_8

Length: 3min 59sec (239 seconds)

Published: Thu May 20 2021