西华大学学报(自然科学版)
西華大學學報(自然科學版)
서화대학학보(자연과학판)
JOURNAL OF XIHUA UNIVERSITY(NATURAL SCIENCE EDITION)
2015年
4期
23-27
,共5页
鼓形蜗杆%齿面误差%检测原理%测量方法
鼓形蝸桿%齒麵誤差%檢測原理%測量方法
고형와간%치면오차%검측원리%측량방법
crown worm%tooth surface errors%detection principle%measurement method
为对鼓形蜗杆齿面这一复杂螺旋面的误差进行检测,提出一种以鼓形齿面偏差作为综合判断平面包络鼓形蜗杆齿面加工误差的误差检测方法。基于齿轮啮合原理建立齿面数学模型,利用齿轮检测中心的轮廓扫描得到轴向齿形;为得到鼓形蜗杆齿面实际接触坐标值,依据鼓形蜗杆齿面方程和齿轮测量中心的特点,进行了测头半径补偿;为实现测量数据与鼓形蜗杆齿面的理想测头中心轨迹的比较,进行了坐标变换;应用最小二乘法原理对测量数据和理论数据进行匹配,得到评估函数,进而得到各测量点的齿面偏差值。对鼓形蜗杆样件齿面进行误差测量实验,验证了上述检测原理和测量方法的可行性。测量结果表明,该鼓形蜗杆样件的上侧齿面误差值为0.079 mm,下侧齿面误差值为0.082 mm。研究内容能形成鼓形蜗杆齿面的误差检测评价体系,有利于内齿轮包络鼓形蜗杆传动的推广和应用。
為對鼓形蝸桿齒麵這一複雜螺鏇麵的誤差進行檢測,提齣一種以鼓形齒麵偏差作為綜閤判斷平麵包絡鼓形蝸桿齒麵加工誤差的誤差檢測方法。基于齒輪齧閤原理建立齒麵數學模型,利用齒輪檢測中心的輪廓掃描得到軸嚮齒形;為得到鼓形蝸桿齒麵實際接觸坐標值,依據鼓形蝸桿齒麵方程和齒輪測量中心的特點,進行瞭測頭半徑補償;為實現測量數據與鼓形蝸桿齒麵的理想測頭中心軌跡的比較,進行瞭坐標變換;應用最小二乘法原理對測量數據和理論數據進行匹配,得到評估函數,進而得到各測量點的齒麵偏差值。對鼓形蝸桿樣件齒麵進行誤差測量實驗,驗證瞭上述檢測原理和測量方法的可行性。測量結果錶明,該鼓形蝸桿樣件的上側齒麵誤差值為0.079 mm,下側齒麵誤差值為0.082 mm。研究內容能形成鼓形蝸桿齒麵的誤差檢測評價體繫,有利于內齒輪包絡鼓形蝸桿傳動的推廣和應用。
위대고형와간치면저일복잡라선면적오차진행검측,제출일충이고형치면편차작위종합판단평면포락고형와간치면가공오차적오차검측방법。기우치륜교합원리건립치면수학모형,이용치륜검측중심적륜곽소묘득도축향치형;위득도고형와간치면실제접촉좌표치,의거고형와간치면방정화치륜측량중심적특점,진행료측두반경보상;위실현측량수거여고형와간치면적이상측두중심궤적적비교,진행료좌표변환;응용최소이승법원리대측량수거화이론수거진행필배,득도평고함수,진이득도각측량점적치면편차치。대고형와간양건치면진행오차측량실험,험증료상술검측원리화측량방법적가행성。측량결과표명,해고형와간양건적상측치면오차치위0.079 mm,하측치면오차치위0.082 mm。연구내용능형성고형와간치면적오차검측평개체계,유리우내치륜포락고형와간전동적추엄화응용。
To test complex helical cylindrical worm tooth surface error, a kind of error detection method is put forward and drum gear surface deviations are regarded as overall judgment of the tooth surface machining error for planar enveloping cylindrical worm. As for the crown worm tooth surface, the mathematical model of tooth surface is established, and the contour scan of test center gear is uti-lized to obtain axial tooth shape. In order to work out the position of the cylindrical worm tooth surface, the probe radius is compensated based on the cylindrical worm gear tooth surface equation and the characteristics of the gear measuring center. Coordinate transformation is performed to compare contour profile of worm gear tooth surface measured with the drum head center trajectory. LMS principle is adopted to optimize the model parameters and the tooth surface deviation is obtained. The crown worm prototype was used in experiment and the correctness and validity of this measurement method were proved. The results show that the tooth surface error of upside is equal to 0. 079 mm, as well as that of the underside is equal to 0. 082 mm. The error measurement and evaluation system are formed, and it is propitious to the promotion and application of internal gear enveloping crown worm drive.