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为主进给
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  main feed
     A new type parallel machine tool, which utilizes a 3dof spatial parallel mechanism as main feed machanism, is proposed in this paper.
     提出了一种以空间三自由度并联机构作为主进给机构的并联机床新结构。
短句来源
     The scheme utilizes a 4 DOF spatial parallel mechanism as main feed mechanism, with assistance of a dual-direction movable worktable, multi-coordinates NC machining can be realized. Closed form equations of forward displacement analysis for main feed mechanism are established. Workspaces of main feed mechanism and hybrid type virtual axis machine tool are analysised based on surface analysis method.
     提出了以 4自由度空间并联机构作为主进给机构 ,辅以双向移动工作台实现多坐标数控加工的一种混联型虚拟轴机床的配置方案 ,推导出了主进给机构位置正确的封闭方程 ,基于曲面分析方法分析了主进给机构及其虚拟轴机床的工作空间 ,并给出了数值实例。
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  相似匹配句对
     proliferatum was the predominant species.
     proliferatum为主
短句来源
     SAM is always produced by fermentation of S.cerevisiae.
     cerevisiae发酵为主
短句来源
     Optimising feed rate
     最佳进给速度
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     New Creep-feed Grinding Machine
     新的缓进给磨床
短句来源
     A new type parallel machine tool, which utilizes a 3dof spatial parallel mechanism as main feed machanism, is proposed in this paper.
     提出了一种以空间三自由度并联机构作为主进给机构的并联机床新结构。
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  main feed
The main feed resources include native pasture and crop residues, which are low in nitrogen (6.2-10.6 g/kg DM) and high in fibre (676-772 g/kg DM).
      
Suggestions concerning updating of main feed pumps of Russian thermal power plants are considered.
      
During picking stage 2.0 kg of potassium sulphate is added to the main feed tank.
      
If the return loss is poor/unsatisfied, de-soldered the balun and readjust the length shorter before resoldering onto the main feed line.
      
In well SC-1, three main feed points are recognized based on production logging.
      
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s:A structural disposition plan for parallel machine tool is suggested. In the disposition, a parallel mechanism, which can realise three freedoms of parallel motion, is used as main feeding mechanism, with assistance of a rotary table, multi axis NC machining can be realized. Based on such design, a general design solution of parallel machine tool with three freedoms and its kinematic design method are introduced. The theory has been adopted in developing the prototype of machine tool.

提出以可实现三平动自由度并联机构作为主进给机构 ,辅以回转工作台实现多坐标数控加工的并联机床结构配置方案 ,并据此简要阐述了一种三自由度并联机床的总体设计方案和相应的运动学设计方法。理论成果已用于样机开发

A structure design scheme for a new type virtual axis machine tool(VAMT) is proposed in this paper. The scheme utilizes a 4-dof spatial parallel mechanism as main feed mechanism, assists with a dual-direction movable worktable to realize multi-coor dinates NC machining. The VAMT enjoys many advantages over its conventional counterparts: large workspace, good dexterity, position decoupling with orientation et al. The DOF of main feed mechanism is calculated, approach for inverse displacement analysis is given,...

A structure design scheme for a new type virtual axis machine tool(VAMT) is proposed in this paper. The scheme utilizes a 4-dof spatial parallel mechanism as main feed mechanism, assists with a dual-direction movable worktable to realize multi-coor dinates NC machining. The VAMT enjoys many advantages over its conventional counterparts: large workspace, good dexterity, position decoupling with orientation et al. The DOF of main feed mechanism is calculated, approach for inverse displacement analysis is given, and closed equation of forward displacement analysis is derived. Anumeric example is given for illustration.

提出了以四自由度空间并联机构作为主进给机构,辅以双向移动工作台实现多坐标数控加工的一种新型虚拟轴机床的结构设计方案。该虚拟轴机床具有工作空间大、灵巧性好、位置与姿态解耦等优点。计算了主进给机构的自由度,给出了位置反解的方法,推导了位置正确的封闭方程,并给出了数值实例。

A new type parallel machine tool, which utilizes a 3dof spatial parallel mechanism as main feed machanism, is proposed in this paper. The input-output equation of displacement analysis for the main feed mechanism of parallel machine tool is established. An analytical expression for determining singularity configuration which is a polynomial equation is set, and the numeric-symbolic manipulating technique is introduced in the paper. Analytical expressions of numeric-symbolic form for each coefficient of the...

A new type parallel machine tool, which utilizes a 3dof spatial parallel mechanism as main feed machanism, is proposed in this paper. The input-output equation of displacement analysis for the main feed mechanism of parallel machine tool is established. An analytical expression for determining singularity configuration which is a polynomial equation is set, and the numeric-symbolic manipulating technique is introduced in the paper. Analytical expressions of numeric-symbolic form for each coefficient of the ploynomial equation are derived. The section curve graph of a singularity surface is drawn. A numerical example of singularity configuration analysis is given for illustration.

提出了一种以空间三自由度并联机构作为主进给机构的并联机床新结构。建立了并联机床主进给机构位置分析的输入输出方程,推导了奇异位形判别的解析表达式。该判别式在形式上为多项式代数方程,在推导过程中引入数值-符号处理技术,得到了多项式代数方程中每一系数元素的数值-符号形式的解析表达式。主进给机构的奇异位形的集合为参数空间的曲面片,得到了奇异曲面方程及奇异曲面的截面曲线图,给出了奇异位形分析计算的数值实例

 
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