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Minimizing the Nega...
Minimizing the Negative Effects of Coolant Channels on the Torsional and Torsional-Axial Stiffness of Drills
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- Parsian, Amir (författare)
- AB Sandvik Coromant, Sandviken, Sweden,AB Sandvik Coromant, 811 34 Sandviken (SWE)
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- Eynian, Mahdi, 1980- (författare)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW
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- Magnevall, Martin (författare)
- Blekinge Tekniska Högskola,Institutionen för maskinteknik,Department of Mechanical Engineering, Blekinge Institute of Technology, Karlskrona (SWE)
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- Beno, Tomas, 1969- (författare)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW
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(creator_code:org_t)
- 2021-09-16
- 2021
- Engelska.
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Ingår i: Metals. - : MDPI. - 2075-4701. ; 11:9, s. 1473-1473
- Relaterad länk:
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Abstract
Ämnesord
Stäng
- Coolant channels allow internal coolant delivery to the cutting region and significantly improve drilling, but these channels also reduce the torsional and torsional-axial stiffness of the drills. Such a reduction in stiffness can degrade the quality of the drilled holes. The evacuation of cutting chips and the delivery of the cutting fluid put strict geometrical restrictions on the cross-section design of the drill. This necessitates careful selection and optimization of features such as the geometry of the coolant channels. This paper presents a new method that uses Prandtl’s stress function to predict the torsional and torsional-axial stiffness values. Using this method drills with one central channel are compared to those with two eccentric coolant channels, which shows that with the same cross-section area, the reduction of axial and torsional-axial stiffness is notably smaller for the design with two eccentric channels compared to a single central channel. The stress function method is further used to select the appropriate location of the eccentric coolant channels to minimize the loss of torsional and torsional-axial stiffness. These results are verified by comparison to the results of three-dimensional finite element analyses.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Nyckelord
- drilling
- dynamics
- stress function
- torsional stiffness
- torsional-axial stiffness
- Production Technology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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