搜索结果: 16-30 共查到“知识库 刀具技术”相关记录66条 . 查询时间(2.157 秒)
金属切削中刀具月牙洼磨损模型的研究
金属切削 月牙洼磨损模型 磨损轮廓 刀屑交界面温度
2011/2/23
刀具的前刀面月牙洼磨损和后刀面磨损在刀具磨损的研究中占据同等地位,但月牙洼磨损轮廓和刀屑交界面上的切削过程变量不易测量等因素,导致真正依据月牙洼磨损测试获取月牙洼磨损模型的研究非常少。基于硬质合金刀具切削低碳钢的月牙洼磨损实验,提出了一个经验磨损模型。该模型综合了黏结磨损和扩散磨损,考虑了刀屑交界面温度和压力对月牙洼磨损的影响。研究结果表明,该模型能够分析并预测相似切削条件下的月牙洼磨损轮廓。
Influencing Factors on Low Current TIG Arc Resonance
Tungsten inert gas arc discrete Fourier transform resonance dynamic impedance
2011/1/19
Pulsed arc can refine of fusion zone grain size and substructure, reduce width of heat affected zone (HAZ) and so on. However, the research of pulsed arc physical properties is still blank. To deepen ...
Pose Planning for the Endeffector of Robot in the Welding of Intersecting Pipes
intersecting pipes bisecting angle welding quality
2010/12/13
Allposition robots are widely applied in the welding of complicated parts. Welding of intersecting pipes is one of the most typical tasks. The welding seam is a complicated saddlelike space curve, whi...
Dynamic Calibration of the Cutting Temperature Sensor of NiCr/NiSi Thin-film Thermocouple
thin-film thermocouple cutting temperature sensor dynamic calibration
2010/10/14
In high-speed cutting, natural thermocouple, artificial thermocouple and infrared radiation temperature measurement are usually adopted for measuring cutting temperature, but these methods have diffic...
Ultra-precision machining of stainless steel using coated carbide tool
Machining Carbide tool Lubricant Stainless steel
2009/12/2
Purpose: This paper discusses the experimental work carried out to investigate the performance of coated carbide
tool in ultra-precision machining of stainless steel and evaluates whether this tool c...
Data Extraction From CAD Model For Rotational Parts to be Machined at Turning Centres
Data Extraction Process Planning DXF Post-Processing
2009/10/14
Among the most important data produced and stored is product data. CAD data forms one of many
contributors to product data. Although in most circumstances CAD data can be processed within the CIM env...
Time Minimization of CNC Part Programs in a Vertical Machining Center in Terms of Tool Path and Cutting Parameter Criteria
Cutting parameters Tool path planning Machining time NC program
2009/10/10
An algorithm was prepared for minimizing the machining time of CNC part programs used in a vertical machining center. The CNC program is transferred from the machine to the CNC code editor with a seri...
The Effects of Cutting Tool Coating on the Surface Roughness of AISI 1015 Steel Depending on Cutting Parameters
Machining Surface roughness Cutting tool coating Cutting parameters
2009/10/9
The effects of a number of cutting tool coating materials on the surface quality of workpieces, depending on various cutting parameters, were investigated. AISI 1015 steel was processed without coolin...
基于铣削加工刀位轨迹,通过建立球头刀多轴铣削过程中切削刃上任意点相对工件运动的轨迹方程,求解铣削加工表面点形貌高度值.研究了进给方式、刀具倾斜方式、倾斜角度与主轴偏心等因素对加工表面形貌及粗糙度的影响.该算法的优点在于勿需对刀齿进行离散,也不需对工件进行三维网格划分,通用性好.仿真结果与实验及文献结果对比表明,算法对工件表面微观几何形貌和粗糙度的预测准确度高,对实际加工中合理选择加工参数具有指导意...
超精抛光中边缘效应对材料去除量的影响
超精抛光 边缘效应 表面模型 压强分布
2009/8/24
传统环抛加工一般将工件整个包围在抛光盘内，加工之后虽然可以获得较好的工件表面，但是需耗费较多的时间，生产效率较低。针对这种情况，借助PPS快速抛光机床，依据Preston公式，对露出抛光盘的工件部分，即对所谓的边缘效应进行研究，用新的表面模型表示非线性压强分布，合理地避开了线性模型造成的压强负值问题。并且对工件材料去除量进行仿真计算，建立了新的去除模型，得出了偏心距、工件半径和抛光盘转速比值对材料...
最小量润滑精密车削中切削液的渗透性（Permeability of Cutting Fluid in Minimum Quantity Lubrication Precision Turning）
最小量润滑 切削液 渗透
2009/8/11
分析了最小量润滑（MQL）切削中供液方位、供液距离等因素对切削液渗透能力的影响。在SB-CNC超精密数控机床上进行了MQL车削45号钢试验，通过对切削力、表面粗糙度和切屑形态的研究表明：喷嘴位于主后刀面且距刀尖20mm处供应较大量的切削液能达到良好的切削效果。
多齿刀具斜角切削微细铝纤维
多齿刀具 铝纤维 当量直径 表面形貌
2009/3/18
为了高效加工表面粗糙的微细铝纤维，设计开发了一种新型的多齿刀具，利用该刀具能够同时加工出多根金属纤维。通过建立该刀具斜角切削的几何模型，分析其切削机理，并通过试验分析切削用量对铝纤维当量直径和表面形貌的影响。结果表明：该多齿刀具切削时，与工件接触的所有细齿同时参与切削，并均可分屑出纤维；选择合适的刀具参数和切削用量，即可获得当量直径在100 μm以下的表面粗糙的铝纤维。本试验中切削速度v、进给量f...
PCBN刀具加工TC4钛合金的切削加工性
切削加工性 钛合金 立方氮化硼刀具
2009/2/16
针对聚晶立方氮化硼（polycrystalline cubic boron nitride， PCBN）刀具材料和钛合金Ti-6Al-4V（TC4）工件材料的特点，采用单因素试验法对切削力和已加工表面粗糙度进行研究；通过扫描电子显微镜（scanning electron microscope， SEM）观察和能量分散光谱（energy dispersive analysis system，EDS）...
PCBN刀具切削淬硬钢时倒棱参数对切削过程的影响
聚晶立方氮化硼 刀具 硬态切削 倒棱
2009/1/16
研究了聚晶立方氮化硼(PCBN)刀具切削淬硬钢GCr15时，倒棱刃口几何参数（倒棱宽度和倒棱角度）变化对切削力、切削温度和锯齿形切屑形态的影响规律。结果表明：随着倒棱宽度的增大，主切削力、径向力和切削温度逐渐增大，但倒棱宽度对切屑锯齿化程度影响并不明显；随着倒棱角度的增大，主切削力、径向力和切削温度随之增大，径向力增加尤为显著，倒棱角为20°时，切屑锯齿化程度最低。