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挤压孔工艺具有生产效率高,加工孔质量好,所需设备简单及工具容易制造等特点,故在机械加工中广泛应用。我厂采用挤压孔的工艺已有多年,最近又遇到了薄板件(板厚度为2～4mm)精孔加工。由于精冲孔尺寸分散范围大,达不到图纸要求的需要,而采用挤压孔工艺后,使孔的尺寸分散范围减为0.01mm,达到了要求。薄板孔的挤压与一般孔挤压工艺有些不同的特点,现将我们的体会介绍如下:
Extrusion hole technology with high production efficiency, processing holes of good quality, the required equipment is simple and easy to manufacture tools and other characteristics, it is widely used in machining. I plant extrusion hole technology has been for many years, recently encountered a thin plate (plate thickness of 2 ~ 4mm) precision hole processing. As the fine punching size distribution range, can not meet the needs of the drawing requirements, and the use of extrusion process, the hole size distribution range reduced to 0.01mm, to meet the requirements. Sheet metal extrusion and general hole extrusion process somewhat different characteristics, we will now introduce the experience as follows: