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采用旋风铣装置可以加工各种内外螺纹,加工锥管内螺纹效果更好,如加工乙炔瓶瓶颈内锥管螺纹,采用旋风铣装置进行加工,比原来在普通车床上加工,提高单人劳动生产率40倍,产品合格率由40%提高到96%,经济效益显著。旋风铣装置的结构及加工原理旋风铣装置的结构如图1所示、该装置安装在C620普通车床上,由电动机通过三角皮带轮带动刀杆轴旋转,刀杆轴上装有螺纹刀作高速旋转。刀具和工件偏一个角距离,工件对刀具作相反方向低速旋转,刀具旋转一转在工件上车削一块切屑,同时旋转装置作轴向进给运动,就可加工出螺纹。 相似文献
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非回转类零件的大规格螺纹孔,通常是在车床或镗床上配备专用夹具或辅助装置利用挑丝方法加工。这种方法技术准备工作量大,操作麻烦,特别是大规格的圆锥管螺纹加工更是困难。我厂在新产品的试制过程中,根据加工中心的特点,在主轴设有位置编码器,不具备螺纹加工功能的情况下,设计制造螺纹铣刀,采用螺旋线插补功能(数控系统或数控机床的选用功能),用同一种牙型螺距刀具,加工出不同孔径、不同旋向的螺纹。这之后又开发出圆锥管螺纹加工功能,成功地解决了非回转类零件上大规格螺纹孔的加工问题。本文以圆锥管螺纹孔的铣削为例,对刀具设计和NC编… 相似文献
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简述了传统数控车床螺纹加工的方法和存在的缺点,提出了新的数控车床螺纹加工工具设计方案,介绍数控车床螺纹加工工具的工作原理、技术特点及使用方法,分析了其优缺点,通过实例进行螺纹编程加工,证明该装置是一种结构简单、操作简便、实用性强的螺纹加工工具. 相似文献
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通过分析、研究螺纹加工原理及常用小规格螺纹加工方法及其实践,结合细长杆外螺纹工件的特点,研究出一种小于M2的细长杆外螺纹加工方法,并设计了细长杆外螺纹辅助机加工装置,解决了细长杆外螺纹加工中常见的螺纹弯曲、乱牙、扭断及螺纹牙型不规范等问题,提高了细长杆外螺纹的加工质量和生产率,降低了加工难度。 相似文献
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In a recent paper, the Ritz method with simple algebraic polynomials as trial functions was used to obtain an eigenvalue equation for the free vibration of a class of homogeneous solids with cavities. The method presented is here extended to the study of a class of non-homogeneous solids, in which each solid is composed of a number of isotropic layers with different material properties. The Cartesian coordinate system is used to describe the geometry of the solid which is modelled by means of a segment bounded by the yz, zx and xy orthogonal coordinate planes and by two curved surfaces which are defined by fairly general polynomial expressions in the coordinates x, y and z. The surface representing the interface between two material layers in the solid is also described by a polynomial expression in the coordinates x, y and z. In order to demonstrate the accuracy of the approach, natural frequencies are given for both a two- and three-layered spherical shell and for a homogeneous hollow cylinder, as computed using the present approach, and are compared with those obtained using an exact solution. Results are then given for a number of two- and three-layered cylinders and, to demonstrate the versatility of the approach, natural frequencies are given for a five-layered cantilevered beam with a central circular hole as well as for a number of composite solids of more general shape. 相似文献
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通过分析膨胀套在实际使用产生滑移受阻现象、卡死现象原因的实质,并在分析产生问题原因的基础上提出了改进措施即:增加导向机构。 相似文献
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设计了磨粉机快辊轴承座的加工工艺和具体的工装夹具.利用卧式加工中心加工磨粉机快辊轴承座,辅以能够高效快速夹紧的夹具,既可以保证加工精度,又能够提高加工效率. 相似文献
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本文以某些积算和双笔记录仪产品为例说明由于仪表功能设计的不合理或选型不当,影响了仪表的正常使用,制造厂和用户应关注这类问题。 相似文献
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一种涡旋压缩机径向随变机构的设计 总被引:1,自引:0,他引:1
详细介绍了运用随变原理设计的一种新型径向密封机构的结构特点,工作原理及主要参数的确定方法,该机构可补偿由于涡旋体加工精度不高而造成的功率损失,适用于涡旋压缩机的批量生产。 相似文献
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Modern methods of implementation of the rule of positive gradient of mechanical properties are considered; this rule was formulated by I.V. Kragelskii and its application serves to minimize the friction and wear of solids. The given methods include the application of coatings with the method of finishing antifricton abrasion-free treatment; application of new metal-cladding lubricating materials; and creation of a nanostructural state of the surface iron nitride layer by nitriding steel with a positive gradient of hardness normal to the surface. 相似文献
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V. P. Dragunov E. G. Kostsov 《Optoelectronics, Instrumentation and Data Processing》2009,45(3):234-242
Specific features of operation of one- and two-capacitor microelectromechanical converters (MEMC) of energy of mechanical microscopic vibrations into electric energy with a modulated electrode-gap magnitude and with allowance for the mutual influence of electrical and elastic forces are analyzed, and the characteristics of these two devices are compared. The main factors restricting the increase in MEMC power are demonstrated to be the effects of “collapsing” and the condition of conservation of positive rigidity of the system. Expressions for estimating the limiting MEMC parameters are derived. The possibility of electrical energy generation in the presence of “real“ sources of wide-spectrum microscopic vibrations is considered. 相似文献