error n. 1.错误;失错。 2.谬见,误想;误信;误解。 3.罪过。 4.【数学】误差;【法律】误审,违法;(棒球中的)错打。 commit [make] an error 犯[出]错。 correct errors 改正错误。 a clerk's [clerical] error 笔误。 mean errors 标准误差。 a writ of error 【法律】(推翻错误原判的)再审命令。 nature's error 天生畸形。 in error 弄错了的;错误地。 errors of commission [omission] 违犯[疏忽]罪。 fall into error 误入歧途。 nature's error 天生畸形。 adj. -less 无错误的,正确的。
It is more important to mass production of aspheric optics . in this paper one aspheric surface measuring instrument is discussed . some of aspects connected with measuring instrument are introduced such as the work theory of aspheric surface measuring instrument , the causations of machine error and the solving ways of these causations , the precision of instrument confirming , the result and analysis of experiments and the function of this instrument in practical production 本论文就是讨论了一种自行研制的非球面轮廓仪,主要用于非球面光学元件精磨阶段面形的检测,文中主要介绍了小型非球面轮廓仪的工作原理、产生测量误差原因的分析以及减小误差的方法、轮廓仪精度标定、使用轮廓仪进行的各种实验以及实验结果分析,以及轮廓仪用于实际生产的情况。
The mathematic model of co - rotating twin - screw machining with milling tool is built . according to this model the tool parameters and theoretical machining error are computed and analyzed . the technique and the approach can effectively aid the designing and choosing of cylinder helical surface machining tools for co - rotating twin - screw 建立了用圆柱立铣刀加工双螺杆的数学模型,提出了基于接触线的取点求距优化算法,通过该模型和算法实现了刀具参数的优化求解以及加工理论误差的分析计算。
This dissertation integrates theory analysis with experiment research and makes further research on nc geometric simulation . the establish of the cutting forces model , cutter wear model , machining error predition and compensation , machining parameter optimization in the physical simulation fields are made more research on the basis of the above research contents . the main achievements are as follows : 1 本文采用理论分析与实验研究相结合的思路,进一步研究了几何仿真与精度验证技术,研究了铣削力模型的建立、刀具磨损模型的建立、加工误差模型与误差补偿技术、基于加工仿真的加工参数优化等物理仿真关键技术,主要研究内容和成果如下: 1 .设计了集几何仿真和物理仿真为一体的数控加工仿真系统的体系结构。
The three major types of machining error are geometric , thermal and cutting - force induced error . at the present time , error compensation model usually aims at single type of error and is used for the specific machine tool . this paper develops a universal synthetical model of error compensation for three - axis numerical control ( nc ) machine tool , which can be updated on time when manufacturing surroundings is changed 论文广泛研究了机床误差补偿技术目前的发展状况,针对目前误差补偿系统存在的不足(诸如大多为单项误差补偿、通用性较差,模型多为静态等) ,提出了机床综合误差的补偿策略,以三轴数控机床为例建立了综合误差补偿系摘要统,系统的误差模型可实时更新,该补偿系统可直接移植到多轴加工系统中。