光电工程
光電工程
광전공정
OPTO-ELECTRONIC ENGINEERING
2014年
6期
70-74
,共5页
张川%陈耀龙%陈晓燕%王平
張川%陳耀龍%陳曉燕%王平
장천%진요룡%진효연%왕평
非球面%磨抛工艺%等去除量%变速运动
非毬麵%磨拋工藝%等去除量%變速運動
비구면%마포공예%등거제량%변속운동
aspheric surface%grind-polish%equal-remove rate%variable speed motion model
针对回转对称非球面的抛光工序,本文提出了一种点接触式的磨抛工艺以及实现等去除量磨抛加工的数控设备运动模型。磨抛工艺基于数控光学表面成形技术及Preston假设,采用筒形磨抛轮对回转对称非球面进行点接触式磨抛加工。在加工过程中,数控设备各轴的运动为变速运动,即工件的转速及磨抛轮的进给速度随着加工位置的改变而改变。通过对该变速运动模型进行求解,并由数控加工设备进行精确控制,从而实现等去除量的磨抛加工。实验结果表明,该变速运动模型能够很好地实现回转对称非球面的等去除量磨抛加工。
針對迴轉對稱非毬麵的拋光工序,本文提齣瞭一種點接觸式的磨拋工藝以及實現等去除量磨拋加工的數控設備運動模型。磨拋工藝基于數控光學錶麵成形技術及Preston假設,採用筒形磨拋輪對迴轉對稱非毬麵進行點接觸式磨拋加工。在加工過程中,數控設備各軸的運動為變速運動,即工件的轉速及磨拋輪的進給速度隨著加工位置的改變而改變。通過對該變速運動模型進行求解,併由數控加工設備進行精確控製,從而實現等去除量的磨拋加工。實驗結果錶明,該變速運動模型能夠很好地實現迴轉對稱非毬麵的等去除量磨拋加工。
침대회전대칭비구면적포광공서,본문제출료일충점접촉식적마포공예이급실현등거제량마포가공적수공설비운동모형。마포공예기우수공광학표면성형기술급Preston가설,채용통형마포륜대회전대칭비구면진행점접촉식마포가공。재가공과정중,수공설비각축적운동위변속운동,즉공건적전속급마포륜적진급속도수착가공위치적개변이개변。통과대해변속운동모형진행구해,병유수공가공설비진행정학공제,종이실현등거제량적마포가공。실험결과표명,해변속운동모형능구흔호지실현회전대칭비구면적등거제량마포가공。
Based on CCOS and Preston assumption, a grind-polishing technique for rotational symmetry aspheric surface polishing process is proposed. In order to achieve equal-remove rate, a variable speed motion model is establishedbased on keeping the contact pressure between grinding tool and workpiece as a constant. By this theoretical principle, the functions of rotate speed and feed speed for every processing position have been inferred. To solve these functions, the rotation speed of workpiece and feed speed of grind-polish wheel in different working position should be gotten. CNC equipment would execute processing accurately. The results of experiment prove that the motion control model could ensure precision of grinding process, so that, the difficulty of polishing process has been reduced and whole processing efficiency has been improved.