查询词典 machining

The main research contents of the dissertation are given. In chapter 2, the machining principle of arc-typed non-circular section, controlling model of tool path, and the equations of section contour curve are studied systematically and deeply.

第一章论述了开展多面形非圆曲面数控加工技术研究在现代机械制造中的重要意义和作用，并详细分析和评述了有关理论和技术的研究现状和发展趋势，从而确定了本论文研究工作的主要内容。

In the NC machining process, due to processing of the object complex and diverse, especially the contour shape of the curve and location of the ever-changing, with improvements in materials are different in different quantities and many other factors, the specific parts in the development of processing programs, should be a detailed analysis and differential treatment, flexibility.

在数控机床加工过程中，由于加工对象复杂多样，特别是轮廓曲线的形状及位置千变万化，加上材料不同、批量不同等多方面因素的影响，在对具体零件制定加工方案时，应该进行具体分析和区别对待，灵活处理。

This assembly, later common on similar-sized lathes, enabled the feed screw to propel the front edge of the cross slide back over the forward edge of the saddle - and so make a contribution to increasing the slide's travel - so useful when mounting a vertical milling slide or doing boring or other machining work on the table.

本届大会，共同对以后类似的中小型车床，使饲料的螺钉来推动前沿交叉倒退的前进边缘鞍-等做出自己的贡献增加了幻灯片的旅行-非常有益的垂直安装时，铣镗幻灯片或做或其他加工的工作摆在桌面上。

The cutting angle and length is controlled by the digital display system with high machining precision.

数字显示技术，型材切割角度及长度尺寸由数显系统显示，加工精度高。

Effect of tool rake angle on cutting vibration by experiments are done at different cutting speed in machining operation, and corresponding theoretical analysis is conducted.

对机械加工中刀具前角对切削加工振动的影响进行了系统的实验研究和相应的理论分析，结果表明：随着刀具前角增加切削加工振动的振幅逐渐减小。

This paper studies the influence of eletrical parameters on the cutting rate and surface roughness of the cutting compound material SiC p/LY12 in wire cutting electric discharging machining and analysed the surface features of cutting with SEM.

研究了电参数对电火花线切割加工SiCp/LY1 2复合材料的切割速度和表面粗糙度的影响；用扫描电镜分析了复合材料线切割加工表面的SEM形貌。

The machining of valve guider and valve set is one of the key process in production of engine cylinder-head.Arming at the precision finishing of valve guider and valve set,a special compound deep-hole cutting tool was designed and made out.

发动机气门导管孔和气门座圈的加工是发动机缸盖加工的关键工艺之一，针对气门导管孔与气门座圈的精密加工，设计制造了专用的复合深孔加工刀具，介绍了该刀具的结构与加工原理，并在试验的基础上优选了加工刀片材料，设计了加工刀片的结构参数。

Wire cutting electric discharging machining ; compound material of SiC p/LY12; surface roughness ; cutting rate

电火花线切割加工； SiCp/LY12复合材料；表面粗糙度；切割速度

Elaborated the punching components formation principle, the basic dies structure and the rate process and the principle of design; and designed some conventional punching die:the die for big diameter three direction pipe which solved the problom of traditional machining,the drawing and punching compound die with float punch-matrix,the drawing and cutting compound dies with unaltered press,the compound die for the back bowl of the noise keeper,the design of the compound die which could produce two workpieces in one punching,the bending die for the ring shape part ,the bending die which used the gemel ,automate loading die for cutting, the drawing,punching and burring compound dies with sliding automated loading,the punching die for the long pipe with two row of hole,the drawing die for the square box shape workpiece and the burring die for the box shape workpiece.

本文对冷冲压技术的分类、特点及发展方向作了简略概述；论述砬冲压零件的形成原理、基本模具结构与运动过程及其设计原理；对典型的冲压件模具进行了设计：大直径三通管冲压复合模设计盖世了肥直径三通管的加工难题、带有浮动凸凹模的拉伸冲孔复合模设计、适力压边式落料拉伸切边复合模设计、消音器后补碗落料、拉深、冲孔、翻边复合模设计、一模两件落料拉伸冲孔翻边复合模设计、环形弯曲件的模具设计、铰链卷圆成形工艺及模具设计、半自动送料切角装置设计、滑板式送料拉深、冲孔、翻边模设计实现自动送料、长管多孔冲模设计、带凸缘台阶方盒形零件拉深模与盒形件侧壁小孔翻孔模。

Elaborated the punching components formation principle, the basic dies structure and the rate process and the principle of design; and designed some conventional punching die:the die for big diameter three direction pipe which solved the problom of traditional machining,the drawing and punching compound die with float punch-matrix,the drawing and cutting compound dies with unaltered press,the compound die for the back bowl of the noise keeper,the design of the compound die which could produce two workpieces in one punching,the bending die for the ring shape part ,the bending die which used the gemel ,automate loading die for cutting, the drawing,punching and burring compound dies with sliding automated loading,the punching die for the long pipe with two row of hole,the drawing die for the square box shape workpiece and the burring die for the box shape workpiece.

本文对冷冲压技术的分类、特点及发展方向作砬简略概述；论述了冲压零件的形成原理、基本模具结构与运动过程及其设计原理；对典型的冲压件模具进行了设计：肥直径三通管冲压复合模设计盖世了大直径三通管的加工难题、带後浮动凸凹模的拉伸冲孔复合模设计、适力压边式落料拉伸切边复合模设计、消音器后补碗落料、拉深、冲孔、翻边复合模设计、一模两件落料拉伸冲孔翻边复合模设计、环形弯曲件的模具设计、铰链卷圆成形工艺及模具设计、半自动送料切角装置设计、滑板式送料拉深、冲孔、翻边模设计实现自动送料、长管多孔冲模设计、带凸缘台阶方盒形零件拉深模与盒形件侧壁小孔翻孔模。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。