Page 54 - 《橡塑技术与装备》2021年16期（8月下半月塑料）

橡塑技术与装备（塑料） CHINA RUBBER/PLASTICS TECHNOLOGY AND EQUIPMENT (PLASTICS)

3.2 大、小件注塑模定、动模镶件结构， 4 结束语
如图 4 所示，它们所有孔的加工，可以在坐标镗 转换开关大、小件的注塑模，不仅是超高精度注
床或慢走丝进行。先是以一大面和两相邻侧面为基准， 塑件模具的克隆设计和制造的问题，还是注塑件综合
加工出所以的孔。所有孔均留单边 0.5 mm 的加工余量， 技术应用的问题。如注塑件高分子材料和填充料的选
在坐标测量仪测量出孔位尺寸后再进行精加工。各件 择 ；注塑件诸多缺陷的整治 ；黏接剂和黏接工艺的选
以 Φ18H7、Φ6H7 和 Φ9H7 孔为基准，精加工各件所 用和试验 ；模具精度的修复 ；孔的超高几何精度加工
以的孔。 等一系列的课题合理解决的问题。缺失那一方面问题
3.3 孔位尺寸坐标值的转换 没有得到很好地解决，转换开关组件都得不到成功的
如图 4 所示，大、小件注塑模定、动模镶件所标 制造。如此看来，一个注塑产品的成功开发是要从多
注孔位的角度值尺寸，是很难用坐标镗床或慢走丝是 方面的技术作手才能获得成功。
进行加工的。需要将各孔的角度值尺寸，转换成直角
坐标值才能进行加工，如按图 5 所示。其中大件定模 参考文献 ：
[1] 文根保，文莉，史文 . 成型塑件的障碍体与注射模的结构设计
镶件 10 的 Φ6H7 为工艺孔，加工时以大件动模镶件和
分析 [J] . 模具制造，2009(12):36-43.
小件注塑模定、动模镶件 Φ18H7 的圆心为坐标原点 [2] 文根保，文莉，史文 . 注塑件模具结构痕迹分析与克隆技术 [J] .
“O”， 大件定模镶件的 Φ6H7 工艺孔圆心的为坐标原点 MC 现代零部件，2011(9):76-79.
“O”。OX 和 OY 坐标和各孔的 OX 及 OY 坐标值，如
图 4 所示。

Cloning design and manufacture of super precision injection mold for
large and small parts of transfer switch

Wen Genbao , Wen Li , Shi Wen 2
1
1
(1.AVIC Aerospace Life-Support Industries Co. LTD., Xiangyang 441002, Hubei, China;
2. University of Sydney, Sydney 2194, Australia)
Abstract: The precision of the large and small holes of the transfer switch is super high. According to
the drawings provided by the supplier, the injection mold is cloning designed from the molding trace of the
sample. Due to the errors in providing drawings and plastic varieties and rough assembly of molds, injection
molded parts have experienced repeated selection of plastic, filler and adhesive varieties; The bonding
and tape making process has been tested thousands of times; The super precision hole, hole location and
its geometric accuracy have been trial produced for hundreds of times; The repair of the mold and the
use of the secondary restrictive shrinkage characteristics of the injection molded parts finally make the
hole accuracy of the transfer switch assembly reach IT6 and IT7, the bonding flatness is 0.02 mm, the hole
cylindricity is less than 0.005 mm, and the hole position is not only the same as that of the large and small
parts, but also consistent with that of the German sample. It breaks through the worldwide problem of low
processing accuracy of injection molded parts. At the same time, the air tightness and shear strength of
components meet the requirements of use, and the service life is better than that of imported parts.
Key words: transfer switch; drawing; injection mold; design; clone
（R-03）

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