来回运动系统

模型HV-EXP3675
往复运动系统本系统采用往复运动箱UHING，将光滑轴的连续旋转运动转化为直线往复运动。在电影中，它就像一个螺旋螺母系统。然而，两个补充功能可以实现:设置螺纹-螺母系统的螺纹和改变螺纹方向(螺旋在左边或右边)。最后一个功能允许改变外壳的位移方向。另外，由于一个特殊的特性，平移方向的反演几乎是瞬时的。这些机构在绕线技术中被大量使用。它们用于正确地分配线轴上的电线或电缆。从技术上讲，对于这种操作，重要的是要检查:换向速度决定绕组的质量。考虑到螺母和轴的轴承内圈之间的不滑动，无论壳体的加速度是多少。本系统可以在机械工程和电气工程领域进行实际工作:由于翻转和设置螺纹运动变换案例的复杂性，本系统具有较高的机械层次。 It allows to study the functional analysis of the different functions: To measure the performances of the system (thread setting, transmissible effort before sliding. To cinematically model the UHING system (contact shaft – bearing ring, thread setting system. To make a computer simulation (SolidWorks) in relation to the thread setting and direction change subsystems. The electrical and control aspects are also very important with the Direct Current motor and its 4 quadrants speed driver, the instrumentation (speed, position and force sensors). Practical works list: Discovery of the system and internal functional analysis. Experimental verification of the performances. Kinematics computer simulation Computer simulation of the thread setting Computer simulation of the direction change Measurement of the performances. Reversing time and thread Study and measurement of the sliding. Implementation of a winding operation. Associated setting Closed loop control. Identification of the system Quadrants functioning of the speed driver Technical specifications A testing bench including A USING case mounted on support with device to implement a winding operation. Two bobbins allow to adjust the device and to achieve this operation with wires of different diameters A direct current motor Some sensors allow to measure in real time: The rotational speed of the motor by a tachometer The speed of transfer of the case by a tachogenerator The motor current, picture of the torque The angular position of the bearing axis similar to a nut according to the time during the reversing time by a potentiometer sensor. A force sensor allowing to test limits sliding force. A control cabinet including: A 4 quadrants electronic speed driver. The input set points imposed to the motor by the speed driver are of the type:step, rampand sinusoid speed. A data acquisition card National Instruments allow to reach a frequency of 10000 Hz. This level of measurement allows to study the reversing phase which last about 0,1 second. A digital transmitter for the rotational speed of the motor. A switch for working in manual or software mode. A control and data acquisition software Using case for manipulation. Case with cover made of Plexiglas® allowing the visualization of the mechanical functioning of the system (setting of the thread and change of direction).