机械制造中经常遇到要把刻度尺装在支架圆弧面上,装配工艺要求在支架圆弧面上划零位线,钻二个铆钉孔以及把刻度尺装钉在支架圆弧面上,这几道工序必须在一个钻模上完成。过去设计、制造了几种钻模,总是达不到要求。后来经过设计人员的分析和精心设计。设计出了式样新颖、装卸方便的多功能钻模(见附图),能完成上述各项的要求。钻模使用时只要把支架装在定位心轴3上,将滚花螺钉压紧支架。然后把放在定位心轴孔内的划线尺4拉出,从垂直方向转动90°靠在支架圆弧面上划零位线,划好后再把划线尺放回到定位心轴孔内,这样既不妨碍装钉刻度尺,又保护划线尺不碰伤,且跟钻模连成一体,不会掉失,使保管和使用都方便。接着把 Mechanical manufacturing often encountered in the scale to be mounted on the bracket arc surface, the assembly process requires zero arc line drawn on the support arc, drill two rivet holes and the scale mounted on the bracket arc surface, These procedures must be completed in a drilling. In the past, several types of drills were designed and manufactured, always failing to meet the requirements. Later, after the analysis of designers and well-designed. Designed a new style, easy loading and unloading multi-function drilling (see photo), to complete the above requirements. Drill when used as long as the stent mounted on the mandrel 3, the knurled screw pressed stent. Then pull the scribe line 4 placed in the positioning mandrel hole and turn 90 ° from the vertical direction against the arcuate surface of the bracket and draw a zero bit line. After making the drawing, put the scribe line back to the positioning mandrel hole , So that neither obstruct the mounting scale, but also to protect the ruler does not bump, and with the drill into one, will not be lost, so that custody and use are convenient. Then put it