JP2009085848A5 - - Google Patents

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JP2009085848A5
JP2009085848A5 JP2007258005A JP2007258005A JP2009085848A5 JP 2009085848 A5 JP2009085848 A5 JP 2009085848A5 JP 2007258005 A JP2007258005 A JP 2007258005A JP 2007258005 A JP2007258005 A JP 2007258005A JP 2009085848 A5 JP2009085848 A5 JP 2009085848A5
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Prior art keywords
correction coefficient
data
workpiece
test
spectral
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JP2007258005A
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JP4812724B2 (en
JP2009085848A (en
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Priority to JP2007258005A priority Critical patent/JP4812724B2/en
Priority claimed from JP2007258005A external-priority patent/JP4812724B2/en
Priority to PCT/JP2008/067767 priority patent/WO2009044746A1/en
Priority to TW97137661A priority patent/TW200925576A/en
Publication of JP2009085848A publication Critical patent/JP2009085848A/en
Publication of JP2009085848A5 publication Critical patent/JP2009085848A5/ja
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Claims (9)

サーボモータによってワークに繰り返し荷重を加える疲労試験装置であって、
少なくとも一周期分の入力波形データを入力する波形データ入力手段と、
前記入力波形データをスペクトルに変換する演算を行い初期スペクトルデータを生成する第１のスペクトル演算手段と、
周波数ごとに定められた補正係数を前記初期スペクトルデータの各スペクトル成分に乗じて第１のスペクトルデータを生成するスペクトルデータ補正手段と、
前記第１のスペクトルデータを逆変換して得られる試験用波形データに基づいてテスト用ワークを変形させるワーク試験手段と、
前記ワーク試験手段によって加えられるテスト用ワークの変形量の変動を示す出力波形データを取得する出力波形データ取得手段と、
前記出力波形データに基づいて前記テスト用ワークの変形量の変動波形のスペクトルを演算して第２のスペクトルデータを得る第２のスペクトル演算手段と、
前記初期スペクトルデータ及び前記第２のスペクトルデータに基づいて前記補正係数の修正が必要か否かを判定する修正判定手段と、
前記補正係数の修正が必要と判定されたときに、前記初期スペクトルデータ及び前記第２のスペクトルデータの対応する周波数のスペクトル成分に基づいて、該補正係数を修正する補正係数修正手段と
を備え、
前記補正係数が修正されたときに、該修正された補正係数を用いて得られる前記試験用波形データに基づいてテスト用ワークの再試験を行い、
前記補正係数の修正が不要と判定されたときに、該補正係数を用いて得られる前記試験用波形データに基づいてワークの疲労試験を行う
ことを特徴とする疲労試験装置。 A fatigue testing device that repeatedly applies a load to a workpiece by a servo motor,
Waveform data input means for inputting input waveform data for at least one cycle;
A first spectrum calculating means for generating an initial spectral data performs an operation of converting the input waveform data to a spectrum,
Spectral data correction means for generating a first spectral data is multiplied by a correction coefficient determined for each frequency to each spectral component of the initial spectral data,
A workpiece testing means for deforming the test work on the basis of the test waveform data obtained by inverse transforming the first spectral data,
Output waveform data acquisition means for acquiring output waveform data indicating variation in the deformation amount of the test work applied by the work test means;
A second spectrum calculating means for obtaining the second spectral data to compute the spectrum of the variation waveform of the deformation amount of the test workpiece on the basis of the output waveform data,
Correction determination means for determining whether the correction coefficient needs to be corrected based on the initial spectrum data and the second spectrum data;
Wherein when a correction of the correction factor is determined to be necessary, the initial spectral data and on the basis of the spectral components of the corresponding frequency of the second spectral data, and a correction coefficient modifying means for modifying the correction coefficient,
When the correction coefficient is corrected, the test workpiece is re-tested based on the test waveform data obtained using the corrected correction coefficient,
When it is determined that correction of the correction coefficient is unnecessary, a work fatigue test is performed based on the test waveform data obtained using the correction coefficient
Fatigue testing device characterized by that . 前記修正判定手段は、前記初期スペクトルデータの各周波数のスペクトル成分を前記第２のスペクトルデータの対応する周波数のスペクトル成分で割った値が所定の範囲内に納まっているかどうかに基づいて、各周波数の補正係数の修正が必要であるかどうかを判定することを特徴とする請求項１記載の疲労試験装置。 The correction determination means, based on whether the corresponding value obtained by dividing the spectral components of the frequency of the second spectral data spectral components of each frequency of the initial spectral data are accommodated in a predetermined range, the frequency 2. The fatigue testing apparatus according to claim 1, wherein it is determined whether or not correction of the correction coefficient is necessary. 前記補正係数修正手段は、前記初期スペクトルデータの各周波数のスペクトル成分を前記第２のスペクトルデータの対応する周波数のスペクトル成分で割った値を、該対応する周波数の補正係数に乗じることによって、該補正係数の修正を行う、ことを特徴とする請求項１又は２に記載の疲労試験装置。 The correction coefficient modifying means, the corresponding value obtained by dividing the spectral components of the frequency of the second spectral data spectral components of each frequency of the initial spectral data, by multiplying the correction coefficient of the corresponding frequency, the correcting the correction coefficient, fatigue testing device according to claim 1 or 2, characterized in that. 前記所定の範囲は０．９５から１．０５の間である、
ことを特徴とする請求項２又は３に記載の疲労試験装置。 The predetermined range is between 0.95 and 1.05;
The fatigue test apparatus according to claim 2 or 3, wherein 前記所定の範囲は０．９９から１．０１の間である、
ことを特徴とする請求項４に記載の疲労試験装置。 The predetermined range is between 0.99 and 1.01;
The fatigue test apparatus according to claim 4, wherein: 前記第１及び第２のスペクトル演算手段は、離散フーリエ変換によってスペクトルを演算する、ことを特徴とする請求項１から５のいずれかに記載の疲労試験装置。   The fatigue test apparatus according to any one of claims 1 to 5, wherein the first and second spectrum calculation means calculate a spectrum by discrete Fourier transform. 前記疲労試験装置が前記ワークにねじり荷重を加えるねじり試験装置であり、
前記該ワークの変形量が該ワークのねじり角度である、
ことを特徴とする請求項１から６のいずれかに記載の疲労試験装置。 Wherein a fatigue test apparatus torsion testing device adding the load torsion to the workpiece,
Deformation amount of the said workpiece is a twist angle of the workpiece,
Fatigue testing apparatus according to any one of claims 1 to 6, characterized in that. 前記疲労試験装置が、送りねじ機構を介して前記ワークに引張、圧縮又は曲げ荷重を加える万能試験装置であり、
前記送りねじ機構によって駆動される、前記ワークを保持するアダプタを更に備え、
前記アダプタの変位量を前記ワークの変形量とする、
ことを特徴とする請求項１から６のいずれかに記載の疲労試験装置。 The fatigue test device, tension on the workpiece through a feed screw mechanism, a universal testing apparatus applying compressive or bending loads,
An adapter for holding the workpiece driven by the feed screw mechanism ;
The amount of displacement of the adapter is the amount of deformation of the workpiece .
Fatigue testing apparatus according to any one of claims 1 to 6, characterized in that. 前記第１及び第２のスペクトル演算手段は、前記入力波形データや前記出力波形データからスペクトルを演算する前に、波形データの高周波成分のカットを行う、ことを特徴とする請求項１から８のいずれかに記載の疲労試験装置。 It said first and second spectrum calculating means, before calculating the spectrum from the input waveform data and the output waveform data, perform a cut of the high frequency components of the waveform data, according to claim 1 to 8, characterized in that The fatigue test apparatus according to any one of the above.
JP2007258005A 2007-10-01 2007-10-01 Fatigue testing equipment Active JP4812724B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2007258005A JP4812724B2 (en) 2007-10-01 2007-10-01 Fatigue testing equipment
PCT/JP2008/067767 WO2009044746A1 (en) 2007-10-01 2008-09-30 Fatigue test device
TW97137661A TW200925576A (en) 2007-10-01 2008-10-01 Fatigue test device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007258005A JP4812724B2 (en) 2007-10-01 2007-10-01 Fatigue testing equipment

Publications (3)

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JP2009085848A JP2009085848A (en) 2009-04-23
JP2009085848A5 true JP2009085848A5 (en) 2010-01-28
JP4812724B2 JP4812724B2 (en) 2011-11-09

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WO (1) WO2009044746A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106874582B (en) * 2017-01-25 2018-03-27 吉林大学 A kind of electro spindle life test time design method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH076866B2 (en) * 1992-03-16 1995-01-30 アイエムブイ株式会社 Vibration control device
JP3383021B2 (en) * 1993-08-30 2003-03-04 株式会社アカシ Drive control device for shaker
JP2002039931A (en) * 2000-07-26 2002-02-06 Shimadzu Corp Materials testing machine
JP3915684B2 (en) * 2002-12-05 2007-05-16 株式会社デンソー Vibration wave determination device
JP2006064668A (en) * 2004-08-30 2006-03-09 Toyota Motor Corp Twist-testing machine and twist-testing method

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