FI944638A - Method for measuring diameter differences in a large rotatable cylindrical piece - Google Patents

Method for measuring diameter differences in a large rotatable cylindrical piece Download PDF

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Publication number
FI944638A
FI944638A FI944638A FI944638A FI944638A FI 944638 A FI944638 A FI 944638A FI 944638 A FI944638 A FI 944638A FI 944638 A FI944638 A FI 944638A FI 944638 A FI944638 A FI 944638A
Authority
FI
Finland
Prior art keywords
measured
sensors
diameter differences
axial spacing
measurement
Prior art date
Application number
FI944638A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI102414B (en
FI102414B1 (en
FI944638A0 (en
Inventor
Miikka Kotamaeki
Timo R Nyberg
Original Assignee
Miikka Kotamaeki
Timo R Nyberg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miikka Kotamaeki, Timo R Nyberg filed Critical Miikka Kotamaeki
Priority to FI944638A priority Critical patent/FI102414B1/en
Publication of FI944638A0 publication Critical patent/FI944638A0/en
Publication of FI944638A publication Critical patent/FI944638A/en
Application granted granted Critical
Publication of FI102414B publication Critical patent/FI102414B/en
Publication of FI102414B1 publication Critical patent/FI102414B1/en

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  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention concerns a method for measuring diameter differences of cylindrical objects that are prescribed to rotate, in which method sensors A, B, C, which are attached in the peripheral direction of the object being measured in measurement housing 11 are turned in essentially the same transverse plane in the axial direction of the object 10 being measured. In the method the distance of the sensors from the surface of the object 10 being measured is measured with sensors A, B, C at a predetermined axial spacing f in a measurement point F. At measurement point F of each axial spacing f the distance results of sensors A, B, C are observed in the method essentially simultaneously. By using a known three-point method calculation the diameter difference is determined in the method for the measurement result by assuming that the deviations from the circular form in the transverse plane of the object 10 being measured are small relative to the diameter differences measured from the measurement point F of each axial spacing f to the next. <IMAGE>
FI944638A 1994-10-05 1994-10-05 Method for measuring diameter differences in a large rotatable cylindrical object FI102414B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI944638A FI102414B1 (en) 1994-10-05 1994-10-05 Method for measuring diameter differences in a large rotatable cylindrical object

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI944638 1994-10-05
FI944638A FI102414B1 (en) 1994-10-05 1994-10-05 Method for measuring diameter differences in a large rotatable cylindrical object

Publications (4)

Publication Number Publication Date
FI944638A0 FI944638A0 (en) 1994-10-05
FI944638A true FI944638A (en) 1996-04-06
FI102414B FI102414B (en) 1998-11-30
FI102414B1 FI102414B1 (en) 1998-11-30

Family

ID=8541501

Family Applications (1)

Application Number Title Priority Date Filing Date
FI944638A FI102414B1 (en) 1994-10-05 1994-10-05 Method for measuring diameter differences in a large rotatable cylindrical object

Country Status (1)

Country Link
FI (1) FI102414B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010037904A1 (en) * 2008-10-03 2010-04-08 Metso Paper, Inc. Method for measuring a cylindrical element in a fiber web machine and an arrangement and a measuring device for the method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010037904A1 (en) * 2008-10-03 2010-04-08 Metso Paper, Inc. Method for measuring a cylindrical element in a fiber web machine and an arrangement and a measuring device for the method

Also Published As

Publication number Publication date
FI102414B (en) 1998-11-30
FI102414B1 (en) 1998-11-30
FI944638A0 (en) 1994-10-05

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