全文获取类型
收费全文 | 166篇 |
免费 | 3篇 |
国内免费 | 9篇 |
专业分类
电工技术 | 2篇 |
综合类 | 9篇 |
化学工业 | 14篇 |
金属工艺 | 21篇 |
机械仪表 | 31篇 |
建筑科学 | 7篇 |
矿业工程 | 2篇 |
能源动力 | 2篇 |
轻工业 | 53篇 |
石油天然气 | 1篇 |
无线电 | 7篇 |
一般工业技术 | 14篇 |
冶金工业 | 8篇 |
自动化技术 | 7篇 |
出版年
2024年 | 1篇 |
2022年 | 3篇 |
2021年 | 1篇 |
2020年 | 3篇 |
2019年 | 1篇 |
2018年 | 1篇 |
2017年 | 2篇 |
2016年 | 6篇 |
2015年 | 5篇 |
2014年 | 5篇 |
2013年 | 15篇 |
2012年 | 8篇 |
2011年 | 8篇 |
2010年 | 4篇 |
2009年 | 5篇 |
2008年 | 3篇 |
2007年 | 8篇 |
2006年 | 7篇 |
2005年 | 8篇 |
2004年 | 5篇 |
2003年 | 9篇 |
2002年 | 8篇 |
2001年 | 12篇 |
2000年 | 6篇 |
1999年 | 2篇 |
1998年 | 4篇 |
1997年 | 13篇 |
1996年 | 9篇 |
1995年 | 3篇 |
1994年 | 4篇 |
1993年 | 2篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 4篇 |
1988年 | 1篇 |
排序方式: 共有178条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
6.
在生产中,不锈冷轧带钢的表面光洁度一般用粗糙度进行控制,其粗糙度越低,光洁度越高。应使用低粗糙度和低微小缺陷面积率的不锈热轧带钢,高的总压下量,低粘度轧制油和平整率达到1%的工艺轧制可获得较高光洁度的不锈冷轧带钢。高速钢轧辊轧制的不锈冷轧带钢的光洁度优于模具钢轧辊。 相似文献
7.
In-Hugh Choi Min-Yang Yang Won-Pyo Hong Tae-Sung Jung 《The International Journal of Advanced Manufacturing Technology》2005,25(3-4):325-333
Finish machining of a curved surface is often carried out by an NC system with curve interpolation in the field. This function, called a NURBS interpolation, adopts a feedrate optimizing strategy based on both the geometrical information of the curved path and dynamic properties such as the curvature of the curve, the allowable acceleration and the time constant. However, in the case of a finish cut using a ball-end mill, the curve interpolator needs to take the machining process into account for improved surface roughness, while reducing the polishing time. This surface roughness on high-speed machining is theoretically defined by the feed per tooth and the pickfeed at the given radius of the tool. In this study, the effect of low machinability at the bottom of a tool on surface roughness is also considered. A curve interpolation algorithm is proposed for generating particular feedrate commands that are able to control the roughness of a curved surface. The simulation of the machined surface by the proposed algorithm was carried out, and experimental results are presented. A feedrate scheme that depends on the inclination angle has important potential application in part finishes consistent with prescribed surface roughness. The results show that the proposed algorithm is potentially useful for roughness-controlled machining of curved surface products. 相似文献
8.
Study on the surface roughness of specimen is a significant field of research because this parameter affects the performance of the machined parts. Meanwhile, the evaluation of surface roughness of specimens using a vision system via the images captured from the specimen is an interesting method which is widely used. Although the effect of flank and crater wear has been investigated extensively in the past researches on surface profiles, some reports indicated that, in finish turning, the nose radius wear has a greater effect on the surface profile of specimen. Although, vibration can affect the surface profile of a specimen in rough turning, the final surface profile in the product used is usually shaped by finish turning that may not be affected by vibration using the robust machine tool. In this work, a machine vision was used to capture the images of the tool tip in-cycle. The 2-D images of the nose area of tool tips were used to simulate the surface profile of specimens in finish turning. The simulated images of specimens in a range of machining condition were detected using the algorithm of this work. The results showed that this method can be used successfully to simulate and evaluate the surface profile of a specimen in finish lathe machining as a fingerprint of the tool tip. This method can be used for forecasting the final surface profile in order to control the performance of products. 相似文献
9.
基于组态软件和PLC的机翼精加工水平测控系统 总被引:1,自引:0,他引:1
利用Modbus通信协议及工业控制计算机(IPC)、组态软件、可编程控制器(PLC)、位移传感器设计开发出机翼精加工水平测控系统。该系统实现了自动/手动自由切换控制、数据的集中管理、传感器的校正、故障报警及检测等多方面功能,为精加工的快速、精确、安全运行提供了保证。该系统投入运行后,较好地实现了工艺控制要求,测控过程稳定可靠,具有较高的性价比,是一种较经济的测控系统。 相似文献
10.
本文以滚动轴承为对象,用铁谱分析技术研究点接触滚动摩擦副的磨损状态。作者对平面磨、镜面磨、工具磨、抛光、超精研1,超精研2六种不同加工试件进行了对比试验。结果表明:滚动磨损在“磨合”期产生片状、切削状颗粒,并有粘着磨损和表面划伤的象迹。所用的六种加H试件中,超精研2试件的磨损特性最佳。 相似文献