Case Study 31
Productivity-boosting boring heads
Author
Kip Hanson
Published April 1, 2015
Boring can be done at higher speeds. With the growth of high-speed spindles, boring heads are spinning faster. Yet the often nonsymmetrical construction of boring heads can make them wobble and vibrate when run beyond a few thousand rpm—especially single-edge finishing heads.
BIG Kaiser Precision Tooling Inc., Hoffman Estates, Ill., provides auto-balancing heads are a must-have for these situations. They use a pinion gear to move a counterweight—as the cutting edge slides in one direction along with the cartridge (the insert holder), the weight moves opposite to it, keeping the head balanced for whatever diameter bored.
For deep-hole finishing, Smart Damper tools are to be used in conjunction with auto-balance heads. The Smart Damper is BIG Kaiser’s solution for chatter, a common occurrence as boring depth increases. Damping often becomes necessary at length-to-diameter ratios of 8:1 and higher. Damping allows for a heavier DOC and feed rate, sometimes two to three times that of an undamped boring head. Thus higher spindle speeds can be used, feed rate and depth of cut are also increased giving higher productivity.
The Smart Damper series covers hole diameters from 1.625 " to 4 ", and up to 16 " deep.
https://www.ctemag.com/news/articles/productivity-boosting-boring-heads
https://www.bigkaiser.com/en/products/boring-tools/modular-components/damping-bars
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https://www.youtube.com/watch?v=NxO3OSqk04Y
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8 Jan 2020
BIG KAISER-Americas
Sep 2019
Adding an edge to boring bar machining
https://www.pesmedia.com/yamazaki-mazak-rigibore-vcn-530c-machining-centre-activeedge-boring-bar-system/
BIG KAISER boring head with built-in smart damper for fast, vibration-free operation
November 23, 2016
https://mfgtechupdate.com/2016/11/big-kaiser-boring-head-built-smart-damper-fast-vibration-free-operation/
Asymmetric boring increases productivity, reduces costs
May 14, 2015
A geometric leap forward, asymmetric line boring accentuates the advantages of reaming and line boring of items such as engine blocks, while eliminating disadvantages.
https://www.todaysmotorvehicles.com/article/tmv0515-asymmetric-line-boring/
Productivity-boosting boring heads
Author
Kip Hanson
Published April 1, 2015
Boring can be done at higher speeds. With the growth of high-speed spindles, boring heads are spinning faster. Yet the often nonsymmetrical construction of boring heads can make them wobble and vibrate when run beyond a few thousand rpm—especially single-edge finishing heads.
BIG Kaiser Precision Tooling Inc., Hoffman Estates, Ill., provides auto-balancing heads are a must-have for these situations. They use a pinion gear to move a counterweight—as the cutting edge slides in one direction along with the cartridge (the insert holder), the weight moves opposite to it, keeping the head balanced for whatever diameter bored.
For deep-hole finishing, Smart Damper tools are to be used in conjunction with auto-balance heads. The Smart Damper is BIG Kaiser’s solution for chatter, a common occurrence as boring depth increases. Damping often becomes necessary at length-to-diameter ratios of 8:1 and higher. Damping allows for a heavier DOC and feed rate, sometimes two to three times that of an undamped boring head. Thus higher spindle speeds can be used, feed rate and depth of cut are also increased giving higher productivity.
The Smart Damper series covers hole diameters from 1.625 " to 4 ", and up to 16 " deep.
https://www.ctemag.com/news/articles/productivity-boosting-boring-heads
https://www.bigkaiser.com/en/products/boring-tools/modular-components/damping-bars
_______________
https://www.youtube.com/watch?v=NxO3OSqk04Y
_______________
8 Jan 2020
BIG KAISER-Americas
Sep 2019
Adding an edge to boring bar machining
https://www.pesmedia.com/yamazaki-mazak-rigibore-vcn-530c-machining-centre-activeedge-boring-bar-system/
BIG KAISER boring head with built-in smart damper for fast, vibration-free operation
November 23, 2016
https://mfgtechupdate.com/2016/11/big-kaiser-boring-head-built-smart-damper-fast-vibration-free-operation/
Asymmetric boring increases productivity, reduces costs
May 14, 2015
A geometric leap forward, asymmetric line boring accentuates the advantages of reaming and line boring of items such as engine blocks, while eliminating disadvantages.
https://www.todaysmotorvehicles.com/article/tmv0515-asymmetric-line-boring/
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