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针对刀具管理的现状,提出一种面向加工中心的RFID刀具信息管理系统。分析了加工中心对刀具信息的需求,采用RFID自动识别技术标识刀具,将刀具关键信息存储在RFID芯片中,并以西门子840D数控系统为例,通过OEM(Original Equipment Manufacture)二次开发软件连接射频处理器与数控系统,实现加工中心刀具信息的自动输入与更新。提高了刀具参数输入的效率与准确性,有效地降低了刀具准备时间与出错率。 相似文献
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刀具直接标刻与识别技术研究 总被引:4,自引:0,他引:4
为解决刀具在库存管理和生产过程追踪管理中的标识问题,提出了激光标刻与二维条码相结合的刀具直接标识方法。研究了条码划伤和刀具储存等对识别可靠性的影响,以及条码标刻深度、表面粗糙度和热影响区等对表面质量的影响。从条码的微观组织、疲劳寿命试验、动平衡试验中分析了对刀具疲劳寿命和动平衡的影响。通过编码,实现了条码识别设备和刀具管理系统的集成。研究表明,该方法对刀具的表面质量、刀具的疲劳强度和刀具的动平衡没有影响,识别可靠性高,为刀具的全生命周期管理和信息追踪提供了有效的技术手段。 相似文献
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为解决刀具分类和识别问题,实现切削刀具高效管理,提出了为每把刀具实体赋予刀具类别编码和刀具ID编码。刀具类别编码反映刀具参数信息,而刀具ID编码为刀具的唯一标识。刀具类别编码采用两级四层的树式编码结构,前三层为一级分类,第四层为二级分类。一级分类主要依据加工方式和刀具模块类别,是长度固定的刚性分类编码。一级分类可以根据加工需要和刀具类别为其配置特征属性树,一级分类下的所有二级分类继承一级分类所具有的属性。二级分类是在一级分类的基础上,根据刀具的物理参数和固有属性对刀具进行更细致的分类。二级分类增加相同一级分类下不同刀具的区分度,为长度可变的柔性分类。根据两级分类方式所形成的刀具类别,产生相应刀具分类编码。刀具ID编码由一级分类编码和四位刀具顺序号组成,构成刀具的唯一标识码。绑定刀具类别编码可以实现对刀具信息的分类和标识,为切削刀具的信息管理和刀具选用提供支持。 相似文献
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依据数控刀具的工艺、结构及材料等特征信息,结合实际刀具管理的需要,对数控刀具进行信息的分类和排序,采用字母与数字混合的方式进行了数控刀具编码系统的设计与开发,使刀具编码包含了数控刀具所有的特征信息与管理信息,确保了刀具编码符合唯一性、适应性、稳定性、可扩充性、可识别性和可操作性原则,满足了生产过程中数控刀具管理的需要。 相似文献
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一、主轴的高速化近几年来 ,为了提高生产率 ,机床的一个重要的发展是主轴的高速化。 1999年在我国的展览会上就展出了 7台转速在 10 0 0 0r/min以上的机床 ,表明我国在主轴的高速化上有了一个良好的开端 ,在主轴的高速化方面 ,支撑它的外围技术是多方面的 ,如支承系统、润滑系统、结构材料等。以滚珠轴承为例 ,随着保持架材料的变化、形状的最佳化和滚珠的小直径化 ,发展了陶瓷滚珠轴承 ,使滚珠轴承的转速延伸到了高速的领域 ;现在又发展成为气体静压、液体静压、动压以及动静压混合形式的各种主轴 ;由于更高转速的要求 ,磁力轴承形式… 相似文献
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Sisira Kanta Pattnaik Neeraj Kumar Bhoi Sachidananda Padhi Saroj Kumar Sarangi 《The International Journal of Advanced Manufacturing Technology》2018,98(1-4):55-65
Machining of aluminum and its alloy is very difficult due to the adhesion and diffusion of aluminum, thus the formation of built-up edge (BUE) on the surface. The BUE, which affects the surface integrity and tool life significantly, affects the service and performance of the workpiece. The minimization of BUE was carried out by selection of proper cutting speed, feed, depth of cut, and cutting tool material. This paper presents machining of rolled aluminum at cutting speeds of 336, 426, and 540 m/min, the feeds of 0.045, 0.06, and 0.09 mm/rev, and a constant depth of cut of 0.2 mm in dry condition. Five cutting tools WC SPUN grade, WC SPGN grade, WC + PVD (physical vapor deposition) TiN coating, WC + Ti (C, N) + Al2O3 PVD multilayer coatings, and PCD (polycrystalline diamond) were utilized for the experiments. The surface roughness produced, total flank wear, and cut chip thicknesses were measured. The characterization of the tool was carried out by a scanning electron microscope (SEM) equipped with energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) pattern. The chip underface was analyzed for the study of chip deformation produced after machining. The results indicated that the PCD tool provides better results in terms of roughness, tool wear, and smoother chip underface. It provides promising results in all aspects. 相似文献
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Zhiwei Lin Jianzhong Fu Hongyao Shen Wenfeng Gan 《The International Journal of Advanced Manufacturing Technology》2014,71(9-12):1835-1848
This paper discusses the singular problem in five-axis machining of freeform surfaces. At first, the generating mechanism of the singularities is studied on the unit sphere in the P-system. Then a new method is developed to avoid the singularities by translating the tool orientations in the configuration-space (C-space) at the time just after the initial cutter locations have been generated for a cutter contact (CC) trajectory on the surface. The tool orientation vectors of the initial cutter locations are projected onto the C-space, forming the orientation polyline. In the C-space, a taper circle is defined. The singularities are detected by contact checking between the orientation polyline and the taper circle. Once they contact, the orientation polyline is translated by a minimum translating vector to avoid the contact. The minimum translating vector is picked on the offset polyline of the original orientation polyline. After that, the translated orientation polyline is inversed to calculate the optimized cutter locations in the P-system. The benefit of avoiding singularities at the tool path planning stage is that the original CC points on the CC trajectory are respected. The developed method is programed and tested through contrastive experiments. Results show that the optimized cutter locations can effectively avoid the singularities. 相似文献
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王黎明 《世界制造技术与装备市场》2004,(3):49-51
继2002年之后,2003年我国继续成为世界机床工具产品第一进口大国,机床工具产品进口(不含磨料磨具)59.57亿美元,同比增长34.44%。其中金属加工机床进口41.31亿美元,同比增长31.12%,机床工具产品和金属加工机床各月进口金额增长走势(见图1)。由图1可见,机床工具产品进口金额和金属加工机床进口金额 相似文献
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Size effect and tool geometry in micromilling of tool steel 总被引:5,自引:0,他引:5
The market for freeform and high quality microdies and moulds made of steel is predicted to experience a phenomenal growth in line with the demand for microsystems. However, micromachining of hardened steel is a challenge due to unpredictable tool life and likely differences in process mechanism compared to macro-scale machining. This paper presents an investigation of the size effect in micromilling of H13 hardened tool steel. In this case, the size effect in micromilling hardened tool steel was observed by studying the effect of the ratio of undeformed chip thickness to the cutting edge radius on process performance. The paper explores how this ratio drives the specific cutting force, surface finish and burr formation in micro-scale machining. In addition, the effect of different microend mill geometry on product quality was explored. The paper provides a valuable insight into optimum micro-scale machining conditions for obtaining the best surface finish and minimizing burr size. 相似文献
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