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Through transformation of parameters, the meshing design system among Hy-Vo silent chain, sprocket and hob was built up based on the research of the pitch increment and the equivalent apothem increment of the effects on the common normal line length when the Hy-Vo silent chain was wrapped around and located on the sprocket, with the proper meshing conditions of Hy-Vo silent chain and sprocket into consideration. The design method of common normal line length was put forward that can be used when the value of the sprocket pressure angle was equal or unequal to the value of the Hy-Vo chain plate pressure angle.

在分析Hy-Vo齿形链链节围在链轮轮齿上定位时其节距增量和当量边心距增量对链轮公法线长度影响的基础上,根据Hy-Vo齿形链与链轮的正确啮合条件,通过参数变化,建立了Hy-Vo齿形链-链轮-滚刀三者之间的啮合设计体系,提出了既适用于链板齿形角等于链轮压力角情况,也适用于链板齿形角不等于链轮压力角情况的Hy-Vo齿形链链轮公法线长度的计算方法。

In the belt grinding for cam a method of by adding medial mechanism to avoid direct contacting of conjugate cam and sand belt so as to prolong conjugate cam's life is put forward in this paper which can solve the problem that conjugate cam is easy to wear.

根据凸轮砂带磨削技术中共轭轮易磨损的情况,提出了一种增加中间摆动机构,避免共轭轮与砂带直接接触,从而增加共轭轮工作寿命的方法,并给出了该机构共轭轮廓形计算的方法。

In this paper, based on nonlinear FEA software ANSYS/LS-DYNA, 3D dynamic simulation models of eighteen-type tubes for backward spinning was established. This paper not only obtained spinning force of tube backward spinning but also obtained the spinning force curves varying with the different reducer ratio, feeds, fillet radius for spinning roller, forming angle and diameter of spinning roller, and diameter blank inner.

以大型非线性有限元软件ANSYS/LS-DYNA为分析平台,通过对18种几何尺寸和参数不同的筒形件三旋轮强力反旋旋压过程的三维动态模拟,得到了它们的旋压力以及旋压力随不同减薄率,旋轮进给量,旋轮圆角半径,旋轮成形角,旋轮直径和毛坯内径的变化曲线。

Ifs use finger shape milling cutter or a dish of shape piece of milling cutter adopt single tooth dispart law cutting time, cans process straight teeth, skewed tooth, a garden of stud gear and bring groove double helical gear or worm gear, this moment was processed gear's dentiform then by cutting tool become shape.

若用指形铣刀或盘形片铣刀采用单齿分度法切削时,可加工直齿、斜齿、园柱齿轮及带槽人字齿轮或蜗轮,此时被加工齿轮的齿形则由刀具成形。

The smallest dominant species were the Rotifera Brachionus forficula, Brachionus angularis and Polyarthra vulgaris, with an average length less than 100μm.

轮虫优势种中,体长最小的是剪形臂尾轮虫、角突臂尾轮虫和广布多肢轮虫等,它们的平均体长均小于100μm。

The zooplankton was mainly contributed by copepods, and its dominant species were mostly eutrophication indicators: Keratella cochlearis, Polyarthra trigla.

水库的主要优势种为轮虫,而且优势种所出现的种类多为富营养化指示种,如:螺形龟甲轮虫Keratella cochlearis、针簇多肢轮虫Polyarthra trigla。

Besides the maskers, they stared at that procession--peculiar to Shrove Tuesday as to Longchamps,-- of vehicles of every description, citadines, tapissieres, carioles, cabriolets marching in order, rigorously riveted to each other by the police regulations, and locked into rails, as it were.

除了观看化装戴假面具的人外,还要看这狂欢节所特有的、象隆桑那样的车队,这些形形式式的车辆,如出租马车、市民马车、带篷大车、皮篷式两轮小车、单马有篷双轮车,它们顺序前进,按警章严格要求,一辆紧跟一辆,好象在铁轨上行驶一般。

This paper uses VBAlanguage which is one of the secondary development tools for AutoCAD 2000 and applies the ActiveX technology to develop CAD system of worm-shaped honing wheel to complete the parametric design, which has friendly UI.

通过对蜗杆形珩磨轮珩齿机理的探讨,推出了阿基米德蜗杆形珩磨轮的设计计算公式。

Parts taper machining error analysis and compensation for wire cut machine tools;2. Process points analysis for die and mould in wire cut machining;3. Using MasterCAM and UG as the tools, the second method is carried through 3D modeling, 4 Axis NC programming and NC 2nd wire cut of worm wheel involute gear.

针对常规数控加工方法加工精密小模数蜗轮模具型腔,加工精确度低,齿形变形大,传动准确度低的问题,探讨了用Mastercam、UG软件进行蜗轮三维造型、四轴数控编程、数控线切割加工蜗轮模具型腔的工艺方法,给出了解决精密小模数齿轮模具加工新工艺,在工程上具有推广价值。

Is specialized in manufacturing reinforced resin cut-off wheel、cymbals shape grinding wheel、super thin cut-off wheel、GG、WA series of special grinding disc、PVA spongy wheel、steel wire wheel、plane abrasive cloth wheel、sheep's wool wheel、sand millstone、sand paper flat、pull floss slice、resin grinding wheel abrasives.

本公司专业生产增强树脂薄片砂轮、钹形砂轮、超薄切割片、GC、WA系列特种磨片、PVA抛光轮、钢丝轮、平面砂布轮、羊毛轮、砂盘、砂纸片、抛光膏等树脂砂轮磨具,是一家具有悠久的生产历史和相当技术力量的专业公司。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。