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UBC Theses and Dissertations
Factors affecting bandsaw tracking behavior and stability Wong, Darrell C.
Abstract
This theoretical and experimental study examines the tracking behavior and stability of bandsaw blades. Tracking describes the in-plane "front-to-back" motion of a bandsaw as it runs on the bandmill wheels. Bandsaw tracking stability returns the sawblade to its initial position after any in-plane side-to-side displacement caused by a cutting force. The tracking behavior and stability of the sawblade are determined by the geometry of the saw and bandmill wheels. Fourteen factors affect this geometry. They are the cutting force, wheel profile, tilt, cross line and coefficient of friction, and the saw backcrown, overhang, strain, tensioning, thickness, width, guides, rotational speed and temperature distribution. In practice, many of these factors are present at the same time. A theoretical model is presented here that accurately and reliably predicts the behavior and stability of the band. This model incorporates and quantifies the tracking stability of cutting force, wheel profile and tilt, and band overhang, strain, thickness and width. Both the experimental and theoretical results show that wheel crown and overhang are the only true stability factors and that the other factors such as width and thickness only modify the stability of crown and overhang. It was also found that the detail of the wheel profile has a substantial effect on tracking stability and when wheel crown is combined with overhang, the tracking stability of overhang is improved. The model can now be applied to investigate different wheel crown profiles. It provides an important tool for the task of improving bandsaw cutting performance while at the same time reducing the required saw and bandmill maintenance.
Item Metadata
Title |
Factors affecting bandsaw tracking behavior and stability
|
Creator | |
Publisher |
University of British Columbia
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Date Issued |
1996
|
Description |
This theoretical and experimental study examines the tracking behavior and stability of
bandsaw blades. Tracking describes the in-plane "front-to-back" motion of a bandsaw as it
runs on the bandmill wheels. Bandsaw tracking stability returns the sawblade to its initial
position after any in-plane side-to-side displacement caused by a cutting force. The tracking
behavior and stability of the sawblade are determined by the geometry of the saw and bandmill
wheels. Fourteen factors affect this geometry. They are the cutting force, wheel profile, tilt,
cross line and coefficient of friction, and the saw backcrown, overhang, strain, tensioning,
thickness, width, guides, rotational speed and temperature distribution. In practice, many of
these factors are present at the same time.
A theoretical model is presented here that accurately and reliably predicts the behavior and
stability of the band. This model incorporates and quantifies the tracking stability of cutting
force, wheel profile and tilt, and band overhang, strain, thickness and width. Both the
experimental and theoretical results show that wheel crown and overhang are the only true
stability factors and that the other factors such as width and thickness only modify the stability
of crown and overhang. It was also found that the detail of the wheel profile has a substantial
effect on tracking stability and when wheel crown is combined with overhang, the tracking
stability of overhang is improved. The model can now be applied to investigate different
wheel crown profiles. It provides an important tool for the task of improving bandsaw cutting
performance while at the same time reducing the required saw and bandmill maintenance.
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Extent |
4173159 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-03-16
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0080858
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1996-11
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.