机械常见问题必知（Must know the common problems of Mechanical）.docVIP

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机械常见问题必知（Must know the common problems of Mechanical）.doc

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机械常见问题必知（Must know the common problems of Mechanical）

机械常见问题必知（Must know the common problems of Mechanical） (1) the robot is a programmable robot arm, which is replaced by the motion of a variable program Moving materials, parts and tools... And other tasks, increasingly wide range of applications. (2) by acousto-optic, electromagnetic, infrared... A guided device operated or driven by pressure and oil pressure. 4. application of friction The application of the mechanical friction wedge, screw, bearing, shaft, rolling friction belt, etc.. 5. what is centripetal force and frictional force? (1) the force that causes two objects to produce relative motion or sliding tendency on the contact surface is called frictional force. (2) the force acting on a rotating object and moving in the same direction as the centripetal acceleration (constant pointing at the center of the circle) Centripetal force. 6. Newtons three laws The first law: the law of inertia (motion, static Heng Jing) The second law: the law of motion (F = MA) The third law: the law of reaction (equal in magnitude, opposite in direction) 7. can the gears be made of lathes? (reason) No, a lathe is a workpiece that rotates and is machined with fixed tools. Can 8. thread be manufactured by milling machine? (reason) Yes, the workpiece will be held at an equal speed with an indexing head, and the bed table will move at constant speed and move through the rotating milling cutter. 9. Pascal theorem The liquid is in an airtight container, the pressure at any point (P) is equal, and perpendicular to the acting surface (A). 10. why does the locomotive keep vibrating when it starts? The transmission of an eccentric shaft in an internal-combustion engine and the movement of a cam that controls the opening and closing of the valve. 11. please indicate which items of automation equipment should be included in mechanical engineering? (1) traditional machinery (CAM, gear train, speed change mechanism, ball screw) (2) air pressure and oil pressure; (3) integrated circuit IC (tran