Hair planting machine High speed hair planting machine_The principle and application of toothbrush hair planting machine

The electric control system structure of the toothbrush tufting machine currently on the market is mainly divided into a single-chip microcomputer control system or a CNC numerical control system. Among them, the control system of single-chip microcomputer is mainly based on the integrated supporting services of automation system manufacturers, and the independent research and development of toothbrush equipment manufacturers is supplemented. Most of the CNC systems with superior performance are Delta's PUTNC-H2P and imported brands from Europe and Japan.

CNC numerical control is mainly to control axis pulse command signal to realize servo drive, usually four-axis control output is realized. Delta's CNC can realize only two-axis output, and the servo of the other two axes can be completed by DuLi. Toothbrush tufting machine requires the system to be able to The two-axis interpolation operation can be realized. The four sets of servo drives are Zhongda's B series ASDA-B AC servo system, with a power of 400W, and the drive has multiple functions for control. The inverter model of the spindle motor is Zhongda's VFD-S, with a power of 400W.

Key points for debugging toothbrush hair planting machinery:

The difficulty in the development of the solution is the joint debugging of the electromechanical system, the most important of which is the adjustment of the servo gain. Among the four servo axes, the X-axis and Y-axis have relatively stable mechanical inertia due to the screw drive structure, so debugging is relatively easy, and the bandwidth can generally be adjusted to more than 130HZ. The Z-axis of the flap is a rotating shaft, and there is centrifugal force in high-speed rotation. If the bandwidth is simply set high, there will be vibration when the motor starts and stops. At this time, the position smoothing filter parameter can be turned on to eliminate the vibration.

Relatively speaking, the mechanical structure of the cam mechanism of the shaved U-axis makes debugging more difficult. In addition, the mechanical rigidity of the U-axis is not good. When the motor is running, the inertia ratio changes greatly, and the output current of the motor also changes greatly. Well, when the motor runs left and right, the shaft either vibrates or whistles, or responds sluggishly. For this reason, it is necessary to apply the resonance suppression function of the B series ASDA-B AC servo system. It is the principle of resonance suppression for system gain with resonance.

When the low-pass filter is increased from 0, B.W. will become smaller and smaller. Although the resonance problem is solved, the system response bandwidth and phase boundary are also reduced, and the system will become more unstable. If the resonance frequency can be known, the band rejection filter can directly eliminate the resonance. Usually knowing how much resonance suppression is, the effect of using a band rejection filter will be better than a low pass filter, but if the resonance frequency will drift with time or other factors, and if the drift is too far, then it is not suitable to use a band rejection filter . The problem caused by the operation of the U-axis of the equipment in this project is that the resonance point is floating. The effect of using the P2-25 low-pass filter is better, and its parameters are set to a large value. In addition, the position accuracy of this axis is not too high, so the problem is solved. .

The article comes from MX brushmachinery /product/show_product.php?id=53