我厂生产的CTB7518、7515、6018、6012型四种规格半逆流永磁筒式磁选机的筒体是产品中的关键零件。图示是CTB6018型磁选机筒体,该工件的特点是材料薄,防磁性好,机械强度高,制作难度大,易变形,难整形。筒体在直径φ600处圆度误差不大于2mm,φ530H8两端孔中心偏差不大于0.15mm。由于筒体材料是1Cr18Ni9T不锈钢制成的,筒身壁厚仅3mm。为此,我们专门设计了一套薄壁筒体加工夹具,经生产实践证明,精度高,效益好,使用方便,通用性好,大大提高了经济效益,降低了原材料消耗成本,现介绍如下: 一、夹具的结构特点 1.结构特点图示车削薄壁筒体夹具是由四爿可调筒模和支架、六角螺钉、瓦撑、支撑螺钉、六角螺母合称瓦形支撑及镗棒三大部分所组成。 2.精度保证众所周知,筒体的质量主要是靠夹具的精度来保 I plant the CTB7518, 7515, 6018, 6012-type four kinds of semi-counter-current permanent magnet barrel magnetic separator tube is the key components in the product. The picture shows CTB6018 magnetic separator barrel, the workpiece is characterized by thin material, good anti-magnetic, high mechanical strength, the production of difficult, easy to deform, difficult plastic. Cylinder diameter at roundness φ600 diameter error of not more than 2mm, φ530H8 center hole at both ends of the deviation is not greater than 0.15mm. As the cylinder material is 1Cr18Ni9T made of stainless steel, cylinder wall thickness of only 3mm. To this end, we have designed a set of thin-walled cylinder processing fixture, proved by the production practice, high precision, good efficiency, easy to use, good versatility, greatly improving economic efficiency, reducing raw material costs, are introduced as follows: First, the structural characteristics of the fixture 1. Structural characteristics diagram Turning thin-walled cylinder fixture is adjustable by the four-cylinder tube mold and bracket, hex screws, tile support, support screws, hexagonal nuts, collectively known as tile-shaped support and boring bar three Part of the composition. 2. Accuracy guarantee As we all know, the quality of the cylinder is mainly by the accuracy of the fixture to protect