数控成型平面磨床磨头及修整机构的设计+CAD图纸
毕业论文关键词： 高精度；效率高；砂轮；数控修整；角接触球轴承
Design of NC molding plane grinder’s grinding head and dressing mechanism
Abstract: Numerical control molding plane grinder is a plane grinder for machining a part. The design of the NC dresser and grinding head is the key part of this machine tool. NC dresser to the needs of grinding wheel dressing city shape, and then use the shape of grinding wheel. Numerical control molding plane grinder is a machine which developed rapidly in recent years, he has the characteristics of high precision, high efficiency and widely, this study is the content of the grinding head and NC correction mechanism. This paper discusses the characteristics and the grinding head and NC correction on a surface grinder to elucidate the role of the purpose and significance of the subject. I have chosen is a stepper motor through the coupling control screw rod to rotate, thereby driving a carriage motion profile control NC dresser, and the head part is composed of P4 angular contact ball bearing, spindle, belt pulley, general motor. Numerical control technology is to keep up with the pace of technological development and systematic knowledge and practice.
Keywords: High precision；High efficiency；Grinding wheel；NC dresser；Angular contact ball bearings
目 录
1 绪论 1
1.1 磨床简介 1
1.1.1数控平面磨床：MK7650A、B 1
1.2 数控平面磨床的发展 2
1.3 数控成形平面磨床简介 3
1.4 数控平面磨床的展望 4
2 数控修整器以及磨头设计综述 5
2.1 数控修整器工作原理 5
2.1.1 金刚石滚轮修整法 5
2.2 数控修整器的要点以及提高精度的方法 6
2.3 磨头的主要要点与工作原理 6
3设计要点 7
3.1步进电机 7
3.1.1 工作原理 7
3.1.2 步进电机的特点 8
3.1.3主要特性 8
3.2 交叉滚子导轨 8
3.3 滚珠丝杠副的选择 9
3.5 角接触球轴承 10
3.6 技术要求与参数 11
4 设计计算内容 12
4.1 电动机 12
4.2 角接触球轴承的设计计算 12
4.2.1设计参数 12
4.2.2 被选轴承信息 12
4.2.3当量动载荷 13
4.2.4 校核轴承寿命 13
4.3 主轴的设计计算 13
4.3.1 主轴基本数据 13
4.3.2 确定轴的最小直径 13
4.3.3 轴的结构造型 14
4.3.4 支反力计算 14
4.3.5 内力计算 15
4.3.6 弯曲应力校核 15
4.3.7 安全系数校核 15
4.3.8 扭转刚度校核 16