Results 41 to 50 of about 152,043 (117)
Jixie chuandong, 2013 The 3-D models of various kinds of cylindrical gears are generated through simulation of rack cutter gear shaping in the light of the principle of cutting gears with the generation method by using AutoLISP language program.The program that takes various ...
周太平, 谢世坤, 康志成
doaj
Research on the Dynamic Instability Behavior of High Speed Metal Cutting
, 2016 随着高端装备制造业的兴起，高效，节能，优质的金属高速切削技术逐渐进入人们的视线。目前，高速切削技术已经应用于航空航天，高速列车，机床制造，核电装备等行业，拥有广阔的发展前景。但是高速切削是一个极为复杂的非线性过程，复杂的加载条件，多场耦合效应的存在，使得高速切削涌现出了锯齿状切屑，黏滑摩擦等不同于普通塑性变形的动态不稳定流动行为。对这类问题的研究，不仅有助于高速切削加工技术的发展以及工程应用的普及，更有助于推动金属材料在极端加载条件之下的力学基础理论的研究。在工程和科研上都有着重大的意义。基于此 ...
王祺
core +2 more sources
Effect of Sulphide on Cutting Characteristics of Sulphur Bearing Gear Steel 20CrMnTiH
Teshugang, 2012 The cutting characteristics of common gear steel 20CrMnTiH (0. 006% S) and sulphur bearing gear steel 20CrMnTi (0. 031 % S) with different cutting speed (200 ~230 m/min) and cutting depth (0. 5 ~2 mm) have been tested and researched.
申景霞, 郑艳, 张海霞, 朱荣
doaj
Jixie chuandong, 2010 Chipping and breakage happened frequently for tools in wood cutting process because of anisotropy of wood and high speed of cutting.Especially in the cut-in process,tools bear great impact.By means of ADAMS,the cut-in process for wood milling of direct ...
张国梁, 刘志军, 李成华
doaj
Shiyou jixie, 2012 针对川东北地区海相地层钻井速度慢、周期长等问题，采用室内试验、统计分析与理论研究相结合的方法，对海相地层抗钻特性进行分析，对高效破岩工具进行了优化设计，优选出适合海相地层PDC钻头的切削齿尺寸和后倾角。从剖面形状设计、布齿设计、力平衡设计和水力设计等方面对PDC钻头进行优化设计，研制出适合川东北海相地层高效钻进的个性化PDC钻头。现场应用结果表明，研制的P613MRR型PDC钻头能够大幅度提高机械钻速和钻头进尺，降低钻井成本，为海相地层的高效开发提供有力保障。
曹文学, 曹继飞
doaj
, 2010 在VERICUT软件环境下建立了虚拟数控非圆齿轮磨齿机床.首先基于成形砂轮展成磨削非圆齿轮的基本原理,进行了磨床的运动数据计算,并构造了符合实际加工要求的G代码形式.然后在 VERICUT下进行了机床模型的搭建,并根据实际磨床的系统特性,选择了合适的控制器,配置了相关参数,建立了非圆齿轮数控加工的虚拟磨床系统.最后在VERICUT下进行了非圆齿轮的加工仿真,对加工仿真中各种干涉情况进行了检查.通过该方法,可以很好地验证非圆齿轮磨削理论的准确性 ...
俞, 春华 +4 more
core +1 more source
Jixie chuandong, 2010 High-speed dry hobbing is a high efficiency green technology in gear manufacturing developed in recent years,which has overcome the disadvantage of traditional gear machining including low productive efficiency,high productive costs,polluting environment
周鹏举, 林超, 陆大成, 钟小平
doaj
Dynamic Changing Regularity of Temperature and Cutting Force during High Speed Machining of TiAl6V4
, 2011 切削温度和切削力是反映高速切削加工过程的两个重要物性指标,是高速切削研究的主要内容。本文基于实验验证的有限元数值模拟技术,系统研究了高速切削TiAl6V4过程中切削温度与切削力随切削速度的变化规律,揭示了其中的物理起源,并对Salomon假设的存在性进行了初步探索。研究结果表明,刀具与切屑接触区温度总是随着切削速度的增加而上升,而工件加工表面温度则在切削速度达到一定临界值后随切削速度增加而降低。另一方面,切削速度的增加将引起主、次剪切区温度上升以及刀—屑接触长度的缩短 ...
仝兴华 +3 more
core +2 more sources
Jixie chuandong, 2008 The process of high-speed dry gear milling by single tooth flying cutter is discussed taking these factors such as the regenerate domino effect of milling liberation,non-continuous cutting and cutting thickness into account,the kinetics’ model of this ...
郭茜, 李庆
doaj
Jixie chuandong, 2006 According to the knowledge of Heat Transfer and Metal Cutting Theory, high-speed dry gear milling by flying cutter to simulate the gear hobbing process is adopted.
林超, 周鹏举, 丘华
doaj