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要铣削一批工件,其槽深精度为+0.001in,而工件的厚度尺寸又很不一致。在这种情况下,要保证这样高精度是相当困难的。文章介绍的这套装置(图1),却可以顺利解决这一问题。该装置的飞刀臂由断面尺寸为0.5 in×1.5in 的矩形钢条制成,其上有三孔,分别装有立铣刀、飞刀和平衡螺栓装置;此外,还有两个螺孔,以紧固飞刀和立铣刀之用。为保证精度,该装置对工件的顶面和槽底表面同时进行加工。调整时,松开紧固立铣刀螺钉,使立铣刀上下滑动,距离尺寸用块规测定。达到要求后拧紧立铣刀紧固螺钉即可。
To mill a number of workpieces, the depth of groove accuracy is +0.001in, and the thickness of the workpiece size is very inconsistent. In this case, to ensure such high precision is very difficult. The article describes the device (Figure 1), but it can successfully solve this problem. The unit’s flying arm is made of a rectangular steel bar with a cross-section of 0.5 in × 1.5 in. It has three holes on it, equipped with end mills, flying knives and counterbalance bolting devices. In addition, there are two screw holes, To fasten flying knife and end mill use. To ensure accuracy, the device processes the top and bottom surfaces of the workpiece simultaneously. Adjustment, loosen fastening end mill screw, make the end mill slide up and down, the distance from the block size determination. Tighten the end mill fastening screw to meet the requirements.