共查询到20条相似文献,搜索用时 171 毫秒
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二轴联动数控加工球头铣刀的虚拟制造模型 总被引:2,自引:0,他引:2
分析了三种不同定义的螺旋刃口曲线的异同和与优劣 ,给出了二轴联动数控加工时不同截形的螺旋沟槽球头铣刀的刃口、沟槽及砂轮截形、相对进给速度等设计模型 ,并通过实得沟槽及计算机模拟结果进行了验证 ,认为借助该模型可获得较理想的球头回转铣刀。 相似文献
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球头铣刀切削力模型的研究进展 总被引:1,自引:0,他引:1
综合评述了国内外对球头铣刀切削力模型的研究成果及发展动态,重点介绍了球头铣刀铣削力的经验系数建模、理论建模和自动化加工铣削力建模方法。 相似文献
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基于数控铣削加工仿真系统,研究了在虚拟制造环境下对球头铣刀磨损引起的曲面加工误差的预测与补偿。建立了与加工参数相关的球头铣刀磨损模型,用于预测球头铣刀切削刃的磨损量,提出了球头铣刀铣削加工误差的补偿方法,并通过实验验证了该方法的有效性。 相似文献
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<正>1后球头刃铣刀的应用一般意义的球头刃铣刀是指球头刃小于或等于180°球面的铣刀,有普通球头铣刀(见图1)和锥度球头铣刀两种。球头刃铣刀广泛应用于机械切削加工,尤其是模具加工中。数控加工中使用的球头刃铣刀的切削刃,一般在五轴数控工具磨床上加工,其几何形状和精度完全可以满足使用需求。 相似文献
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球头模具铣刀球头部分的几何参数分析 总被引:4,自引:0,他引:4
根据国内球头模具铣刀设计与制造过程中存在的问题,研究了球头铣刀球头部分几何参数的影响因素及各因素的选择方法,可作为设计与制造球头铣刀的理论依据。 相似文献
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Ching-Ben Chen 《The International Journal of Advanced Manufacturing Technology》2007,35(5-6):493-504
Defining the helical angle as the angle between the cutting edge and revolving axis of the cutter presents the designing models
of the cutting edge and helical groove of a toroid shaped taper cutter. Under the condition of a certain revolving speed,
the relative radial and axial feeding speeds of the grinding wheel in two-axis NC machining of the cutter are deduced. The
models for calculating the actual obtained groove and the simulation-method of computer are also provided.The surface near
to the top of the end cutter has no helical cutting edges and infinite feeding speeds of NC machine. It is necessary to adopt
a supplementary cutting edge. A supplementary cutting edge is designed as a cutting edge with a constant pitch. This paper
provides valuable reference for the design and NC machining of this kind of toroid shaped taper cutter. 相似文献
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W.-F. Chen C.-K. Chen H.-Y. Lai 《The International Journal of Advanced Manufacturing Technology》2002,20(3):169-179
The paper presents a geometric modelling approach for the precision design and NC machining of a concave-arc ball-end milling
(CABEM) cutter which is an important tool for mould-making industries. This paper presents systematic models of the cutting
edge, helical groove, and grinding wheel design for the NC machining of a CABEM cutter. Both the normal to the revolving axis
and the tangent to the groove, are used to derive the required precision sectional profiles of the grinding wheel. In compliance
with the maximal sectional radius of the cutter, the profile of the groove section and both the radial and axial cutting speeds
of the grinding wheel are computed in sequence. Using the computer simulation results of the groove actually obtained, this
paper proposes a method to resolve the problems of the residual revolving surface and the narrow cutting edge strip. This
paper is intended to serve as a reference for the design and NC machining of cutters of this type . 相似文献
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建立了面向虚拟制造的特种回转面刀具数控加工仿真系统的体系结构 ,并以砂轮与刀具为例对体系中不同对象间的碰撞干涉进行了讨论 ,推导了相应的检验算法。该体系将几何模型与物理模型相结合 ,较真实地反映了特种回转面刀具数控加工的实际情况 ,提出了新的高效判交算法 ,可有效地提高检验效率 相似文献
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整体叶轮鼓形刀五坐标数控加工刀位轨迹生成 总被引:1,自引:0,他引:1
研究了用鼓形刀具进行整体叶轮五坐标数控加工的编程技术.根据鼓形刀具的几何特点,设计了一种无干涉的鼓形刀刀位轨迹生成算法,开发出整体叶轮五坐标数控加工程序生成功能模块.通过算例,证明设计的鼓形刀无干涉刀位轨迹算法是切实可行的,与球头刀相比,对于同样的残留高度,可以增大加工行距,使刀轨长度变短,可提高整体叶轮数控加工的效率. 相似文献
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