2 結果與分析 [size=1em]由上述對4種木工圓鋸片的模態試驗得其振型和頻率動力特性參數。4種木工圓鋸片試驗模態的振型及其固有頻率值分別見表2、表3。 [size=0.8em]表2 四種木工圓鋸片試驗模態的振型表
[size=0.8em]表3 四種木工圓鋸片試驗模態的固有頻率值
[size=1em]表2和表3中,D004630-2#在M=0,N=2,B001880-2#和B001890-1#在M=1,N=1時均出現振型無法辨識的情況。其原因在于受節點劃分精度的影響,使其某些模態振型無法辨識。 3 主要結論[size=1em]圓鋸片工作中,其轉速應避開木工圓鋸機各階固有頻率的半功率譜帶值?傊,通過模態試驗法可便于進行圓鋸片產品的提升和改進,這將對圓鋸片的優化設計及其工藝工作具有良好的工程價值。 [size=1em]參考文獻: [size=1em][1] 葛健煜,黃波,王志,等.組合金剛石圓鋸片模態和頻響分析[J].中北大學學報(自然科學版),2016,37(4):375-380. [size=1em][2] 王正,高子震,顧玲玲,等.木工圓鋸片動力學綜合檢測裝置的研制[J].實驗室研究與探索,2015,34(7):72-74. [size=1em][3] 伍占文,朱兆龍,原慧敏,等.木工刀具磨損特性及抗磨技術研究現狀[J].林業機械與木工設備,2021,49(5):16-20+28. [size=1em][4] 袁哲,曹瑞元,趙民.金剛石圓鋸片模態分析[J].制造業自動化,2013,35(17):147-149. [size=1em][5] 王正,何繼龍,黃飛.木工圓鋸片固有頻率測試方法研究[J].木材加工機械,2006(3):31-33. [size=1em][6] 常潤安,胡俊.盾構開倉檢修更換刀具施工關鍵技術研究[J].森林工程,2020,36(4):85-93. [size=1em][7] Vahid N,Ahmad M,Julie C.The effect of rotation speed on the power consumption and cutting accuracy of guided circular saw:Experimental measurement and analysis of saw critical and flutter speeds[J].Wood Material Science & Engineering,2020,15(3). [size=1em][8] 曹彩婷,劉一波,徐燕軍,等.硬質合金圓鋸片基體擴孔用珩磨條配方設計與試驗[J].超硬材料工程,2020,32(5):7-12. [size=1em][9] 胡歡,張云才,李春林,等.耐沖擊型金剛石圓鋸片鋸切受力的數值模擬(二)—以新型半圓形水槽鋸片為例[J].金剛石與磨料磨具工程,2020,40(2):89-93. [size=1em][10] Milenko B,Bojana R,Tijana D,et al.Fatal craniofacial circular-saw-related injury:a rare case of accidental death.[J].Forensic science,medicine,and patholog,2020. [size=1em][11] 王正,顧玲玲,高子震,等.木工圓鋸片減振槽系統的動剛度力學性能測算與分析[J].林產工業,2014,41(6):47-50. [size=1em][12] 武松靈,臧勇,熱處理軟點對圓鋸片模態參數和剛度的影響[J].材料科學與工程學報,2017,35(3):494-497. [size=1em][13] Buyuksagis I S,Rostami J,Yagiz S.Development of models for estimating specific energy and specific wear rate of circular diamond saw blades based on properties of carbonate rocks[J].International Journal of Rock Mechanics and Mining Sciences,2020,135. [size=1em][14] 趙磊,胡歡,孫爽.基于有限元理論分析掏孔對金剛石圓鋸片剛度的影響[J].石材,2020(7):22-24. [size=1em][15] 姜陽春,王正.基于ANSYS的木工圓鋸片有限元模態分析[J].木工機床,2006(4):9-12. [size=1em][16] 葉魯浩,王志,張進生,等.基于ANSYS圓鋸片模態分析及諧響應分析[J].金剛石與磨料磨具工程,2015,35(4):41-46. [size=1em][17] 王正,董超,何杰,等.圓鋸片的聲模態試驗研究[J].木材加工機械,2009,20(6):1-4.
Experimental Modal Analysis of Woodworking Circular Saw Blades[size=1em]GAO De-wei1, DONG Ya-fei1, WANG Zheng2*
(1.College of Mechanical and Electronic Engineering,Nanjing Forestry University,Nanjing,Jiangsu 210037,China;2.College of Materials Science and Engineering,Nanjing Forestry University,Nanjing Jiangsu 210037,China) [size=1em]Abstract:Woodworking circular saw blades are one of the core accessories of woodworking circular saw machines to realize the cutting function.Their performance,structure,manufacturing process and other parameters influence their cutting quality and service life.In this paper,the experimental modal analysis of four kinds of woodworking circular saw blades was carried out in order to master the vibration mode and natural frequency value of circular saw blades,which has guiding significance for the research on vibration reduction and structural stability of saw blades. [size=1em]Key words:woodworking circular saw blade;experimental mode;vibration mode;natural frequency;number of pitch circles;number of pitch diameters
[size=1em]中圖分類號:S776 [size=1em]文獻標識碼:A [size=1em]文章編號:2095-2953(2022)04-0016-04 [size=1em]收稿日期:2021-09-28 [size=1em]第一作者簡介:高德偉(1996-),男,碩士研究生,研究方向為控制工程,E-mail:3488397212@qq.com。 [size=1em]*通訊作者:王 正(1963-),男,教授,博士,研究方向為木結構建筑,E-mail:wangzheng63258@163.com。
|