共查询到18条相似文献,搜索用时 187 毫秒
1.
锥度装置是数控中走丝线切割机床的关键部件及核心技术之一。随着中走丝机床产品的不断升级,对锥度切割精度提出了更高的要求。为此,设计了高精度锥度装置,从结构性能上解决了刚性、可靠性、传动精度和防护等问题。通过应用和验证,其几何精度、数控运动精度均得到稳定提高,能完成高精度锥度切割和多次切割的加工。 相似文献
2.
数控低速走丝电火花线切割机床广泛地应用于模具制造行业及各种硬质合金以及精密零件的加工.能进行高精度的锥度加工是这种机床的重要性能之一.为了保证切割零件的锥度与尺寸都满足加工要求,技术人员必须掌握好加工锥度的方法及技巧.本文以北京阿奇夏米尔CA20数控低速走丝电火花线切割机床为例,详细介绍了锥度零件切割的步骤,锥度加工误差的修正以及一些锥度切割的技巧,对实际生产具有指导意义. 相似文献
3.
数控精密线切割在加工带有锥度的工件时,需对机床的锥度参数进行严格的校正,应用三角函数关系详细论述了机床校正的基本过程和方法. 相似文献
4.
针对锥度切割中的几个主要技术关键进行分析和比较,提出几种适应锥度切割的新型结构.这些结构,在汉川机床厂 HCKX250机床上得到了实现.一、导丝模快走丝线切割机床的导丝模,按结构形式可分成以下三种。 1.导向轮直接作导丝模导向轮的材料有硬质合金、陶瓷、人造宝石等,这种导丝模结构,在不切锥度的情况下,因 相似文献
5.
6.
将两轴联动的线割机床改造成四轴联动,即增加了u轴和v轴的联动时可切割锥度体的线切割机床的微机控制系统。重点介绍了锥度控制原理、齿隙补偿、端偏量补偿、短路回退,并分析了对称、旋转加工的数据自动生成方法。 相似文献
7.
以北京阿奇夏米尔CA20数控低速走丝电火花线切割机床为例,详细介绍了锥度零件切割的加工步骤,锥度加工误差的修正以及一些锥度切割的技巧,对实际生产具有指导意义。 相似文献
8.
9.
传统“X-Y-U-V”式电火花线切割机床受限于几何结构,加上电极丝倾斜时不易保证良好的冲液条件,难以加工锥度大于30°的工件。为提高电火花线切割机床加工上下异型、大锥度等工件时的表面质量和尺寸精度,并拓展其应用范围,提出了工件摆动而电极丝不发生倾斜的摇篮式电火花线切割机床构型。首先,基于刚体运动学的基本理论,建立了用于求解机床各轴数控指令的运动学模型;接着,引入机床几何误差进行精度建模,推导该误差至加工表面的映射关系,并依据此模型对数控指令进行误差补偿;最后,通过实验验证所提出的摇篮式电火花线切割机床加工上下异型、大锥度等工件的可行性。 相似文献
10.
数控线切割机床加工解决了很多传统加工难以解决的难题,尤其是在带锥度平面切割的产品加工过程中更具优势,已广泛应用于塑料模具、航空、航天等工业领域。本文介绍了一个实例,希望读者可以在这加工方法中得到一些启示。 相似文献
11.
12.
对一种用于超大型盘类零件圆周车削加工设备作了初步的研究,对设备的工作原理、加工特点、主传动系统作了简要的分析和说明.本加工设备结构简单,便于制作、运输、安装和调整,能满足一般的加工需要.它可用于大型水电、水泥、化工设备中的大型圆盘类零件的加工. 相似文献
13.
为降低机械加工过程中切削液对环境造成的污染以及处理切削液时高昂的成本,提出一种兼有涡流冷却效应和静电润滑效应的干式钻削技术与装置。将气体离子化、臭氧化后吹到切削加工区域,代替切削液实现润滑、冷却的作用,获得良好的断屑效果,同时延长刀具的寿命。基于结构参数对系统放电性能、臭氧浓度以及冷却效果的影响规律,优化装置结构,形成干式辅助钻削装置。实验结果表明:当电极锥度为15°、电极直径为1 mm、铜帽内径为3 mm、气体流量为20 L/min、驱动电压为6 kV时,臭氧浓度达到峰值34.2×10-6。通过与纯干式切削对比发现:所提技术的切削温度降低40.9%,刀具刃口基本没有损伤,切屑微观表面切痕分布清晰、条理均匀。所设计的涡流冷却静电润滑干式钻削技术在切削效应、冷却效果、刀具磨损以及切屑形态等方面均优于传统的干式钻削技术,可以用于六系铝材的钻削加工。 相似文献
14.
An experimental investigation was conducted to determine the influence of cutting parameters on the surface roughness and kerf taper of an abrasive waterjet machined graphite/epoxy laminate. Experimental design was used to systematically measure the influence of cutting parameters on the surface roughness and kerf taper of laminate specimens. Stylus prolifometry was used to measure the surface roughness and a visual inspection including scanning electron microscopy (SEM) was conducted. Profilometry measurements supplemented with microscopy analysis suggests that three regions of surface topography are evident on the machined surface of the laminate specimens. ANOVA techniques indicate that the influence of cutting parameters on the surface roughness changes as a function of cutting depth. Mathematical models were developed to predict the surface roughness and kerf taper in terms of the cutting parameters of a graphite/epoxy laminate to cutting depths of 16 mm. 相似文献
15.
W. Zhang Y. Peng F. He D. Xiong 《International Journal of Machine Tools and Manufacture》2008,48(6):666-676
Twist drill is a cutting tool of large-batch and diversified varieties. Geometric measurement is indispensable to drill design, manufacture, and regrinding. To meet the demand of advance in manufacturing technology, a three-dimensional (3-D) drill measurement instrument was developed. Method of drill flank and flute measurement by using this device is presented in this work. Cutting angles evaluation is essential to cutting performance appraisal. But, there is no suitable instrument yet to inspect them directly. If the flank/flute intersection is determined, cutting angles calculation would be a routine work of numerical computation. Considering the peculiarity of the drill point configuration, a straightforward method for flank/flute intersection is derived. Procedure of cutting angles calculation is also detailed. The procedure is illustrated by an example of flank and flute inspection, flank/flute intersection, and cutting angles calculation for a standard twist drill. The measurement precision is appraised by using a tool-room microscopy. The maximum error is in the third decimal place. It verifies the validity of the developed 3-D drill meter and the proposed measurement methods. 相似文献
16.
17.
首先,阐述了超声椭圆振动切削技术、原理及其装置特点,着重论述了装置各构成部分的特点及其主要应用类型与材料。其次,分析了国内外学者在双激励、单激励方式下实现纵弯、纵扭、双弯曲和弯扭等复合超声振动装置结构设计及其优化方面的研究成果与进展,并且比较了超声椭圆振动切削与传统加工在加工性能、工件表面质量和加工精度等方面的加工优势与适用范围,以及不同超声振动装置在各切削加工中所能获得的加工效果。最后,对超声椭圆振动切削装置的发展趋势进行了总结和展望,指出该装置发展将朝着结合能场的方向发展。 相似文献
18.
D. SpathA. Hühsam 《CIRP Annals》2002,51(1):91-94
Skiving is a continuous cutting method for high-performance machining of periodic structures. With this method, the main manufacturing times can be reduced substantially.The key to the successful application of skiving is the design of suitable tools and safe processes. Due to the complexity of the skiving kinematics, the tool design has to be based on simulation. A suitable software program was developed for this purpose, so that the complete shape of skiving tools can be defined. By simulating the production process with the same program, all cutting parameters for an optimum process adjustment can be determined. Furthermore, a geometric assessment of the resulting workpiece geometry is provided by the software program.The possibilities offered by the simulation software developed, and the skiving manufacturing method, are demonstrated by the example of cylindrical external gearing. 相似文献