叶切面最大厚度计算是螺旋曲面加工准备过程中必要的环节。
The computation of maximum thickness of the section of blades is necessary for preparing for manufacturing of the screw surface.
既提高了螺旋曲面加工的精度，又满足了加工过程中自动化生产的要求。
It not only improves the efficiency of the manufacturing precision of screw, but also meets the satisfaction of the manufacturing automation.
本文重点研究了用成形法加工螺旋曲面时，对砂轮要不断进行修形控制的问题。
The error of the result data is analyzed in this paper. The problems for controlling continuous dressing of the grinding wheel in form grinding processing are studied in this paper.
基于螺旋线数控铣削的螺旋曲面粗加工的方法可大大提高加工效率，减少刀具磨损，降低加工成本。
This article introduces a means of nc program about rough cut of helicoid base on helix-milling. The means can improve efficiency of cutting, reduce the cutting abrasion, depress the operating costs.
设计过程中按推导出的数学方程构造各段螺旋线，并以该螺旋线作为扫描轨迹，遵循范成法原理包络出螺杆的各段螺旋曲面。
The varying pitch helixes were constructed on the parameter equation, and were selected as sweep trajectory; the surface of the screw was enveloped on the generating method.
在螺旋曲面的数控粗加工中，采用一般的编程方法得到的刀具路径在实际应用中存在加工时间长、效率低、对刀具要求高等缺点。
In rough cut of NC milling of helicoid, there are many defects when the generic programming means, for example, longer cutting time, inefficient, exigent tools are used.
在圆柱螺旋曲面的盘形铣刀成形铣削加工工艺中，工件上的螺旋曲面实质上就是盘形铣刀切削刃回转面螺旋进给运动所形成的包络。
In the forming technique of cylindrical spiral curved surfaces, the contour of workpiece is virtually the result that disk shaped milling tools feed into the workpiece and move around its axis.
目的研究颅面部骨性管道的多层螺旋CT曲面重建成像。
Objective To study the curved planar reformation (CPR) imagings of bony canals in craniofacial region with multislice spiral CT.
目的探讨多层螺旋CT曲面重组成像对面神经管的应用价值及其技术要点。
Objective To study the value of curved planar reformation(CPR) CT in imaging facial nerve canal and the related method.
基于空间曲面共轭原理，确定齿轮切齿矢量关系，建立了螺旋锥齿轮的齿面矢量方程。
Based on the conjugation theory of space curved surface, the vector relation of gear cutting is ensured. Tooth vector equation of bevel gear is established.
前言： 目的：探讨非增强螺旋CT全尿路曲面重建对输尿管结石的诊断价值。
Objective:To study the value of curved planar reformation (CPR) of unenhanced spiral CT in diagnosis of ureter stone.
通过统计学中的响应曲面法建立了螺旋铣削过程中切削力的二阶模型，并分析了主轴转速、每齿进给量、轴向和径向切削深度等因素对切削力的影响。
A quadratic model of predicting helical milling force was researched. The effects of spindle speed, feed per tooth, and axial and radial depth of cut were analyzed.
船用螺旋桨是一类典型的自由曲面零件，它的设计和制造精度直接决定了其推进效率。
Marine propeller is a type of free form surface part. Its design and manufacture precision decide ship's thrust efficiency directly.
目的：在牙种植过程中，比较螺旋CT和曲面断层的应用价值。
Objective:To compare the clinical application of Spiral Computed Tomogarphy(SCT)and orthopantomogarphy(OP) in implant procedure.
螺旋桨表面和它的尾涡面离散为四边形双曲面元，每个面元上布置等强度偶极子和源汇分布。
The surface of propeller and its trailing vortex is divided into a number of small hyperboloidal quadrilateral panels with constant source sink and doublet distributions.
材料和方法：用Siemens螺旋CT扫描机，对20例共25颗上颌埋伏阻生前牙患者进行螺旋CT横断面扫描，并进行曲面、三维重建。
Materials and Methods:20 patients with 25 un-erupted and impacted teeth were scanned by Spiral CT and processed by dental reconstruction with SIEMENS spiral CT scanner.
目的探讨16层螺旋CT曲面重建技术(CPR)在正常阑尾显示中的应用价值。
Objective To evaluate the value of curved planar reformation (CPR) in 16-slice ct of normal veriform appendix.
常见的共轭曲面包括齿轮的齿面、空间凸轮的工作面和螺旋面等，其中螺旋面被广泛应用于螺纹、蜗杆、螺杆泵及金属切削刀具等领域。
The common conjugate surface includes tooth surface of gear, working surface of solid CAM, helicoidal surfaces existing in spiral burr, worm, chip flute of cutters, and so on.
给出了定子螺旋面和转子蜗杆齿廓曲面方程以及行星轮轮齿滚珠与定子螺旋面及转子蜗杆之间的接触线方程。
The curved surface equations of the teeth profile on the stator helical surface and the rotor worm are given.
基于空间曲面共轭原理，确定齿轮切齿矢量关系，建立了螺旋锥齿轮的齿面矢量方程。
Based on the conjugation theory of space curved surface, the vector relation of gear cutting is ensured.
结晶器搅拌桨采用船用螺旋桨结构，桨叶为复杂曲面。
The structure of the crystallizer propeller is the same as that of Marine propeller.
刀倾半展成法是加工螺旋锥齿轮和准双曲面齿轮的有效方法。
The "Tool Pan Tilted method" is a high effect method to generate spiral-bevel gears and Hypoid gears.
实际加工结果表明，该方法提高了回转曲面螺旋槽加工精度和效率。
The machining practice shows that the approach enhances the efficiency and precision for the machining of screw flutes with surfaces of revolution.
给出了基于可成形性的三角网格曲面分区算法和通过偏置来生成各曲面分区多道次螺旋线成形轨迹的方法。
A triangular mesh surface zoning approach based on formability was given. Moreover a strategy to generate multi-stage spiral forming tool path for each surface area by offset was presented.
算法应用实例表明，该方法能够对曲面进行分区，并为相关曲面分区生成光滑连续的多道次螺旋线成形轨迹。
The case studies indicated that the proposed method could realize surface zoning and generate smooth and successive multi-stage spiral forming path for the corresponding surface zones.
方法：10例接受ITI种植的患者，在术前均接受螺旋CT和曲面断层的影像学检查。
Methods:10 patients received ITI implant treatment had image analysis by SCT and OP.
锥齿轮的齿可以是直齿、螺旋形或准双曲面。
锥齿轮的齿可以是直齿、螺旋形或准双曲面。
应用推荐