利用一只220V/6V电源变压器,经四只2CZ11二极管整流,为二只DZ-202型玩具电机提供直流电,再自制几只简单的零件,即可制成简易注射针磨尖擦洗机。制作时,先取出二只电机的转子,分别在其端部套丝5毫米。另取二段直径6毫米、长10毫米的铁棒作套轴,中间打孔,并用2毫米丝锥攻丝。制作磨尖机时,另取一直径2毫米、长15毫米的铜棒,二头套丝。将电机轴和铜棒分别套入套轴后,再将上海齿科材料厂出品的312型砂轮(外径25毫米,中心孔2毫米)套入铜棒另一端,用2毫米螺帽固定,即成 Using a 220V / 6V power transformer, the four 2CZ11 diode rectifier, two DZ-202-type toy motor to provide DC, and then made a few simple parts, can be made of simple injection needle sharpener. Production, first remove the two motor rotor, respectively, in the end of the wire sets 5 mm. Another two sections of 6 mm in diameter, 10 mm long iron rod for sleeve shaft, the middle punch, and tap with 2 mm tap. When making grinding machine, another take a diameter of 2 mm, 15 mm long copper rod, two sets of silk. The motor shaft and copper rod were set into the sleeve shaft, and then produced by the Shanghai Dental Material Factory 312 wheel (diameter 25 mm, center hole 2 mm) into the other end of the copper rod, with 2 mm nut fixed, Serve