五、课程设计评分标准 1.设计文档完整性和规范性（20分）； 2.硬件设计的合理性和可行性（20分）； 3.软件设计的正确性和有效性（20分）； 4.系统测试的准确性和实用性（20分）； 5.创新性和实际应用价值（20分）,滚珠丝杠是一种通过滚珠与螺纹杆间的接触实现传动的装置，具有高精度、高刚性、高效率等特点，广泛应用于机械加工、自动化生产线、航空航天等领域,Ball screw nut assemblies are commonly used in many industrial applications, such as CNC machines, robotics, and aerospace. The ball screw nut assembly consists of a threaded rod, known as the screw, and a nut with recirculating ball bearings. As the screw rotates, the nut moves along the thread, converting the rotary motion of the screw into linear motion. The use of ball bearings in the nut assembly reduces friction and increases the efficiency and accuracy of the system. There are several types of ball screw nut assemblies, including: 1. Rolled ball screw nut assembly: This type of nut assembly is made by rolling the thread on the screw and the nut. It is a cost-effective option for low-speed, low-precision applications. 2. Ground ball screw nut assembly: In this type of nut assembly, the thread on the screw and the nut is ground to a high level of precision, resulting in improved accuracy and efficiency. It is suitable for high-speed and high-precision applications. 3. Preloaded ball screw nut assembly: This type of nut assembly uses a spring to preload the ball bearings in the nut, reducing backlash and increasing accuracy. 4. Miniature ball screw nut assembly: This type of nut assembly is designed for small-scale applications, such as medical devices and miniature robotics. Overall, ball screw nut assemblies offer a reliable and efficient solution for converting rotary motion into linear motion in a wide range of industrial applications.,同时，滚珠的滚动也减小了螺纹杆和导轨之间的摩擦系数，提高了传动效率,当螺杆旋转时，滚珠会沿着螺纹槽移动，从而将旋转运动转化为线性运动, 4. 上海云仙机电设备有限公司：成立于2005年，主要生产滚珠丝杠、直线导轨、螺母等产品, 滚珠丝杠的结构分析可以从以下几个方面进行总结： 1. 螺杆的结构：螺杆一般采用圆柱形或矩形截面，其表面上有螺纹,需要注意的是，选型时需要考虑到滚珠丝杠的额定负载、轴向负载和径向负载等因素，以确保滚珠丝杠的稳定性和使用寿命, 7. 滚珠丝杠的电机功率不足，需要更换更强的电机,其承载能力取决于滚珠丝杠的直径、螺距、滚珠数量和材料等因素