共查询到20条相似文献,搜索用时 125 毫秒
1.
2.
3.
液体磁性磨具光整加工技术是用磨具本身的流变特性对工件表面进行光整加工的新技术.在实际加工试验研究的基础上,分析了磁场强度、工件转速、加工时间工艺参数对加工表面质量的影响规律;为进一步研究液体磁性磨具的加工机理和加工装置的改进提供了依据. 相似文献
4.
5.
6.
7.
金属切削加工在机械制造业中占有重要的地位。切削工艺包括有车、刨、钻、铣等不同的类型,利用切削刀具从毛坯上切除多余的金属,以获得要求的形状、尺寸和表面精度零件的加工方法。金属工件的切削加工过程中,在已加工工件表面形成的鳞刺会严重影响工件表面质量。本文通过对鳞刺的产生原因和形成机理进行深入的探讨,并从中分析出抑制或减少鳞刺产生的具体方法,减小已加工表面粗糙度,从而达到改善金属切削加工工件表面质量的目的。 相似文献
8.
9.
10.
11.
单点金刚石车削技术是产生纳米特征表面的光学元件重要制造工艺之一。此加工技术在空间科学、生物医学工程、军事、国防和光学等领域有着广泛的应用。然而,金刚石刀具在切削硬脆和黑色金属材料时受到限制,如刀具磨损加剧、刀具寿命缩短以及工件表面加工质量降低等。为了减少刀具磨损和提高工件表面加工质量,相关学者提出了不同的解决方案,将从单点金刚石车削辅助工艺、工件改性、刀具性能改善和超硬材料及刀具方面梳理面向提高硬脆和黑色金属材料加工质量的单点金刚石车削加工技术相关研究,分析当前各种加工技术的优势与局限,提出未来将多种能场辅助的单点金刚石车削技术和基于聚焦离子束改性的金刚石刀具技术作为研究的重点。 相似文献
12.
13.
玻璃孔加工的试验研究 总被引:3,自引:0,他引:3
研究了电镀金刚石工具结构和加工参数对玻璃孔加工质量和加工效率的影响。试验结果表明,在电镀金刚石工具端部开槽,可获得小的玻璃爆边直径和高的材料去除率。冷却方式影响玻璃孔的加工质量,主轴转速和配重载荷影响玻璃孔的加工效率。 相似文献
14.
15.
为解决微结构功能表面的金刚石超精密加工过程中,难以经济而灵活地预测表面质量及加工条件对加工表面质量的影响的问题,以自行设计的带有快速伺服刀架的超精密机床为基础,采用Matlab/ Simulink模块建立正弦波微结构功能表面金刚石超精密加工过程的动态仿真模型。利用该模型,不仅可以预测加工表面质量,还可以对加工条件如进给速度、主轴转速对加工表面质量的影响进行仿真进而对加工条件进行优化。通过微结构功能表面的金刚石超精密切削加工验证试验,加工出表面粗糙度约为45 nm、形状精度约为0.65 µm的正弦波微结构功能表面,试验结果表明,该模型的建立对于微结构功能表面的金刚石超精密加工具有重要的指导意义。 相似文献
16.
The previous research of precision grinding optical glasses with electrolytic in process dressing (ELID) technology mainly concentrated on the action of ELID and machining parameters when grinding,whic... 相似文献
17.
Lei Zheng Baowei Wang Baofu Feng Chao Gao Juntang Yuan 《The International Journal of Advanced Manufacturing Technology》2011,56(5-8):421-427
Laminated ceramic composite armors made of engineering ceramics, fiber-enforced composite, and lightweight alloy are expected to be used widely in armor protection area. However, secondary machining is still a problem for the distinct properties of composing materials, and up to now, few reports can be found out about machining technology. In this work, an experimental study on drilling a typical laminated ceramic composite armor by using a special sintering diamond thinwall trepanning tool has been carried out deeply. To improve the machining efficiency, process parameters including the spindle speed and the axial force have been optimized through drilling experiments. Moreover, the three phases of the whole drilling process of the typical ceramic composite armor is proposed, and the machining mechanism and chip forms in each phase have been analyzed. Also, diamond tool skidding phenomena whether at hole exit or during drilling middle engineering ceramics have been explored, and the skidding mechanisms are presented. In addition, the surface quality of a hole wall machined has been studied, and an advisable measure is given. Results achieved in this paper can provide a technical base for diamond trepanning tool drilling similar laminated ceramic composite armors. 相似文献
18.
For the technology of diamond cutting of optical glass, the high tool wear rate is a main reason for hindering the practical application of this technology. Many researches on diamond tool wear in glass cutting rest on wear phenomenon describing simply without analyzing the genesis of wear phenomenon and interpreting the formation process of tool wear in mechanics. For in depth understanding of the tool wear and its effect on surface roughness in diamond cutting of glass, experiments of diamond turning with cutting distance increasing gradually are carried out on soda-lime glass. The wear morphology of rake face and flank face, the corresponding surface features of workpiece and the surface roughness, and the material compositions of flank wear area are detected. Experimental results indicate that the flank wear is predominant in diamond cutting glass and the flank wear land is characterized by micro-grooves, some smooth crater on the rake face is also seen. The surface roughness begins to increase rapidly, when the cutting mode changes from ductile to brittle for the aggravation of tool wear with the cutting distance over 150 m. The main mechanisms of inducing tool wear in diamond cutting of glass are diffusion, mechanical friction, thermo-chemical action and abrasive wear. The proposed research makes analysis and research from wear mechanism on the tool wear and its effect on surface roughness in diamond cutting of glass, and provides theoretical basis for minimizing the tool wear in diamond cutting brittle materials, such as optical glass. 相似文献
19.
20.
试验用设计的金刚石端铣刀进行了铝合金铣削试验,在常规的切削速度下用普通刀具加工零件,由于积屑瘤和毛刺的形成,往往引起刀具寿命短,加工表面质量差及切削刃质量差.在许多行业的铝合金加工技术中,较高的表面光洁度及切削刃质量很重要,也很需要.本试验的结果揭示出使用新设计的金刚石端铣刀高速切削铝合金,能加工出镜面表面,而不产生积屑瘤和毛刺. 相似文献