问题
问答题 简答题
数控机床与普通机床的区别？
答案
参考答案：
数控机床与普通机床的区别
1组成区别：数控机床由控制介质、计算机、数控装置、伺服驱动系统、辅助装置、适应控制装置和机床本身组成。普通机床只有机床本身
2特点：①数控机床主传动电机采用交（直）流调速电机代替普通车床的异步电动机
②转速功率大
③变速范围大
④主轴速度的变换速度可靠
搜题请搜索小程序“爱下问搜题”
数控机床与普通机床的区别？
参考答案：
数控机床与普通机床的区别
1组成区别：数控机床由控制介质、计算机、数控装置、伺服驱动系统、辅助装置、适应控制装置和机床本身组成。普通机床只有机床本身
2特点：①数控机床主传动电机采用交（直）流调速电机代替普通车床的异步电动机
②转速功率大
③变速范围大
④主轴速度的变换速度可靠
| 阅读理解。 | ||
| ||
| 1. What is the purpose of the letter? | ||
| A. To complain about a broken toy. B. To oppose the advertising. C. To order a gift for Chrisman. D. To apply for a job in a toy company. | ||
| 2. Why does the writer of the letter that Electro-Robo is violent? | ||
| A. It is controlled by radio water. B. It is expensive to buy. C. It is 80 centimeter. D. It bears arms. | ||
| 3. What dose "End" at the end of the letter mean? | ||
| A. Something attached to the letter. B. A complaint to the toy company. C. A hidden message. D. An encouraging response. | ||
| 4. Electro-Robo can do all the following EXCEPT _____. | ||
| A. sitting down B. shaking hands C. talking D. walking |