The Development of the Microplastic Gear Pump

本文介绍了如何在塑料齿轮上做一个非常微小的起始件，采用增压热收缩的方法。因为它使机械系统微型化，所以可以实现微小的运动。塑料也有另一面，也有一些缺陷，也有很多优点。实验上，用多轴测距法将其压在塑料板上制成薄膜。高精度齿轮经冲压后，通过加压热收缩得到微小齿轮。由于多个轴在缩小率上是一致的，因此机器制造精度保持不变。实验结果使模数为0.04、外径小于或等于1 mm的齿轮的制造成为可能。齿形精度、尺寸精度也都很高，能得到高精度的齿轮与之相去甚远。这些齿轮可以是大齿宽的齿轮，预计会有很多应用。1995年设计制造了轴孔加工用压力机夹具。通过一次制造、冲压模具间隙修正和冲击损失量修正，制造出精度较高的齿轮，1996年的研究表明，可将增压热收缩作为二次制造。作为实验的结果，测量了微小塑料齿轮的外径和轴孔的口径。通过加工可以获得高精度的齿轮，并获得重现性。随着这些制造技术的出现，微型齿轮泵的制造成为可能。通过这种制造方式，对今后齿轮泵设备的发展具有一定的参考价值。

This paper is described about doing a very minute plastic gears in the initiation, using a pressurization heat shrinkage. Because it minute-izes a mechanical system, the minuter movement can be realized. Plastic has the other side, some defects which has a lot of merits, too. Experimentally, it pressed at the plastic board to have made filmy with the numerous axis ranging method. After that of a high precision gear is won in pressing., it gets a very minute gear by the pressurization heat shrinkage. Because the numerous axis is uniform about the shrinkage percentage, machine manufacture precision is kept just as it is. The manufacturing of the gear with module 0.04, equal to or less than 1mm of outside diameters became possible as a result of the experiment. The tooth shaped precision, the size precision, too, are high and can get the gear of the high precision with is not so far. These gears can be one with big tooth width and a lot of application is expected. In 1995, it designed and it manufactured a press jig for the axis hole manufacture. It manufactured a higher precision gear by being first manufacture and doing the revision of the clearance of the die for the pressing and the wallop and the revision of the loss quantity of the wallop and the study in 1996 could manufacture in the pressurization heat shrinkage as the secondary manufacture. As the result of the experiment, it measured the outside diameter of the very minute plastic gear and the caliber of the axis hole. The high precision gear could be gotten and reappear-ability by the manufacture was gotten. with the probability of these manufacture technique, the manufacture of the microgear pump became possible. By this way of manufacturing, in the future, the development of the equipment which used a gear pump is expected.