共查询到20条相似文献,搜索用时 270 毫秒
1.
针对目前加工钢管坡口方法的质量差、成本高、效率低、劳动强度大、质量难以控制等问题,设计了一种钢管管端坡口自动加工组合机床.利用该设备可实现钢管的快速装卸,可靠定位及夹紧,自动完成循环加工过程.较大地降低劳动强度,提高生产效率,为钢管的坡口加工提供了可靠的技术保证,具有良好的经济效益和应用价值.文中还给出了钢管管端加工工艺方案、机床夹具、动力头及电气-液压控制系统的设计方案. 相似文献
2.
倒棱机仿形浮动刀架的设计 总被引:1,自引:0,他引:1
针对大管径的焊接钢管端面加工问题,设计一台具有仿形浮动刀架的钢管端面倒棱机.它的特点是:工件不动,刀盘旋转,在切削过程中,刀架浮动,滚轮内仿形,使得钢管的设计基准与工艺基准一致,有效地消除了焊接钢管在直径方向上的不圆度对坡口均匀度的影响,使得加工出来的钢管端面坡口均匀光洁,可达较高的精度. 相似文献
3.
4.
5.
通过对焊接钢管的坡口加工精度的分析表明,采用固定刀盘车削焊管,其精度难以得到保证,为此,提出了仿形车削方法和仿形车削刀盘的设计结构. 相似文献
6.
7.
袁礼彬 《机械工人(冷加工)》2010,(1):45-46
夹具是机床切削加工的重要工艺装备,使用夹具的首要目的是保证机械零件尺寸(形状)精度及位置精度,而机械零件的制造精度很大程度上取决于加工该零件的机床夹具能否达到设计精度的要求。 相似文献
8.
9.
为保证AP1000反应堆冷却剂主管道的安装满足设计要求,对测量技术、主管道坡口加工及主管道焊接变形控制进行了研究。结果表明:激光测量能完全满足精度控制要求,坡口加工的进刀量不超过0. 25 mm/次,对主管道焊接变形可进行有效控制及跟踪。在上述研究的指导下,主管道安装完全满足设计要求。 相似文献
10.
《现代制造技术与装备》2021,(8)
高速切削加工技术能够有效提高生产效率,增强加工精度,节约资源。在数控机床上中的具体应用,主要体现在数控系统、配套刀具、机构设计、伺服单元以及机床主轴等方面。随着技术的进步和发展,高速切削加工技术正在朝着绿色化和高精度方向发展。因此,主要分析了高速切削加工技术在数控机床中的具体应用。 相似文献
11.
目前在机械加工领域,沟槽广泛出现在精密设备的关键件上,由于沟槽是由高精度的异形槽构成,因此采用传统加工工艺难度很大,加工成本过高。这里将高速切削技术应用到沟槽类零件的加工中,提出了零件的工装设计与装夹方案。并对高速切削过程中涉及的粗加工、半精加工和精加工策略进行探讨,最后总结出加工中缓解刀具寿命下降的工艺措施。 相似文献
12.
13.
Ching-Ben Chen Fu-Shou Wang Pai-Chi Chang Jia-Huei Hwang Wei-Fang Chen 《The International Journal of Advanced Manufacturing Technology》2006,31(3-4):283-296
Having first defined the helical angle as the angle between the cutting edge and the axis of rotation of the cutter, this paper then presents design models for producing the cutting edge and groove of a ball-end cutter with concave-arc generator. The relative feed speeds of the grinding wheel in the radial and axial directions during NC machining of the cutter are derived based upon a given speed of rotation. The feed speed of the grinding wheel in the radial direction is modified according to the cross section of the groove that passes through the center of the cutter sphere. The paper presents a method for manufacturing a concave-arc ball-end (CABE) cutter using a 2-axis NC machine. The models that are used to calculate the actual obtained groove and the computer simulation method are also included. To further enhance the accuracy of the mathematical models, a compensatory machining process that eliminates residual profile on the revolving surface is presented. This paper provides a valuable reference for the design and machining of this cutter type. 相似文献
14.
数控机床在线测量技术与误差分析 总被引:1,自引:0,他引:1
对数控机床在线测量技术和系统误差分析进行了研究,认为随着制造技术的不断发展,对于超精密加工,相应的测量设备必须跟上,才能保证精度达到设计要求;要开发出具有在线测量功能的数控机床,才能够适应机械加工的需求. 相似文献
15.
16.
17.
本文介绍数控机床的最新发展 ,着重论述信息技术和驱动新技术给数控机床带来的高精度、高速加工、兼容性、开放性等优异性能 相似文献
18.
19.
介绍折线绳槽卷绕技术的起源、及钻机绞车滚筒绳槽的制造现状.针对里巴斯(LEBUS)绳槽的特点,说明了加工里巴斯绳槽的机床设计、加工里巴斯绳槽的工艺方法、加工绳槽的几种实用加工程序及编程技巧,该方法成功地解决了钻机上各种LEBUS绳槽整体车削的加工难题,提高了绳槽的加工精度,满足钻机的工作要求并延长设备的使用寿命. 相似文献
20.
Heng LUO Zhigang DONG Renke KANG Yidan WANG Jiansong SUN Zhaocheng WEI 《Frontiers of Mechanical Engineering》2023,18(1):13
When ultrasonically cutting honeycomb core curved parts, the tool face of the straight blade must be along the curved surface’s tangent direction at all times to ensure high-quality machining of the curved surface. However, given that the straight blade is a nonstandard tool, the existing computer-aided manufacturing technology cannot directly realize the above action requirement. To solve this problem, this paper proposed an algorithm for extracting a straight blade real-time tool face vector from a 5-axis milling automatically programmed tool location file, which can realize the tool location point and tool axis vector conversion from the flat end mill to the straight blade. At the same time, for the multi-solution problem of the rotation axis, the dependent axis rotation minimization algorithm was introduced, and the spindle rotation algorithm was proposed for the tool edge orientation problem when the straight blade is used to machine the curved part. Finally, on the basis of the MATLAB platform, the dependent axis rotation minimization algorithm and spindle rotation algorithm were integrated and compiled, and the straight blade ultrasonic cutting honeycomb core postprocessor was then developed. The model of the machine tool and the definition of the straight blade were conducted in the VERICUT simulation software, and the simulation machining of the equivalent entity of the honeycomb core can then be realized. The correctness of the numerical control program generated by the postprocessor was verified by machining and accuracy testing of the two designed features. Observation and analysis of the simulation and experiment indicate that the tool pose is the same under each working condition, and the workpieces obtained by machining also meet the corresponding accuracy requirements. Therefore, the postprocessor developed in this paper can be well adapted to the honeycomb core ultrasonic cutting machine tool and realize high-quality and high-efficient machining of honeycomb core composites. 相似文献