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GCr15钢制弹簧夹头热处理工艺的改进 总被引:1,自引:0,他引:1
周辉全 《机械工人(热加工)》1995,(11):23-23
弹簧夹头广泛应用于轴承套圈车加工生产中,通过其胀紧作用使套圈定位,要求具有良好的塑韧性。但许多轴承生产企业为了便于生产和管理,一般不采用弹簧钢制造,而常用GCr15钢代替。由于GCr15钢不具备良好的塑韧性,故在生产中常常造成弹簧夹头的大量破碎,影响了生产的正常进行,GCr15钢制弹簧夹头的失效形式主要是早期脆断,断裂部位主 相似文献
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我厂是专业生产轴承保持架的企业。产品精车加工在 CA7620液压半自动车床上进行。以往在车削小型号产品内径、端面和沟槽时,采用的是移动式弹簧夹具,如图1所示。这种夹具通过拉杆2带动弹簧夹头4向左移动,使弹簧夹头压紧缩小,工件随着弹簧夹头移动而定心夹紧。加工完毕后,拉杆向右移动, 相似文献
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杨来永 《机械工人(冷加工)》1986,(3)
批量精车六角螺栓杆部,使用三爪夹盘,很难保证六方与杆部的同轴度。所以,我们设计了快速装夹精车螺杆夹具,保证了加工精度。安装前调整螺钉7使弹簧5得到合适的预紧力,然后装入车床卡盘找正。操作时将工件六方放入弹簧夹头4内,用顶尖顶紧,顶紧力通过顶柱2带动夹头4位移,将工件夹紧。加工完毕,旋回顶尖,借弹簧5及弹簧夹头4 相似文献
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在轴承套圈车加工中,用传统的内夹式弹簧夹具,容易导致簧瓣与夹持面的不完全接触,夹紧力分布和均匀,造成套圈外径表面夹伤或套圈严重弹性变形,影响加工质量。采用改进后并用特定方法加工的夹具,能变不完全接触为完全接触,夹紧力分布均匀,消除套圈外径夹伤,防止夹紧弹性变形,提高加工质量。附图5幅,参考文献1篇。 相似文献
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赵新太 《机械工人(冷加工)》1995,(10)
在机械加工中,许多轴套类零件。由于内外圆同轴度要求高,所以采用一般性的心轴去加工外圆往往在质量上难以保证。为此,我们设计了一种能在大批量生产中,不停车加工轴套类工件的夹具,如图所示。 该夹具主要由内锥套8、轴承7、螺纹挡圈6、止摊套5、弹簧夹头4及外壳3等主要零件组成。弹簧夹头4的右端为 相似文献
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我厂加工小型轴、套和圆销等工件较多,机床开关次数频繁,电机易于发热,装夹工件劳动强度大,又因卡盘跳动,加工质量也受影响。我们经过反复实践,改用了不停车夹具,效果良好。特点消除了电机发热,减轻了劳动强度,提高了加工质量,操作方便,安全可靠,可提高工效7倍以上,在大批量生产中效果更为显著。弹簧夹头的规格可根据实际情况进行选取,我厂采用的弹簧夹头内孔尺 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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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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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
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针对目前市场对工业设计人才的需求,本文论述了我校在工业设计教育方面的改革措施,着重介绍了我校工业设计教育在软件和硬件方面所进行的一系列的改革。 相似文献
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