论文部分内容阅读
对中碳钢工件加工φ250 D_4毫米、长1850毫米的大直径深孔,光洁度要求达到▽▽▽以上,用一般方法是困难的。因为如采用磨削加工,没有这样大的内圆磨床;如采用镗孔,光洁度达不到要求;如采用滚压、珩磨,生产率不高,质量不稳定。为此,我厂职工在党的领导下,针对这一难题,经过刻苦钻研,终于革新成功能达到▽▽▽7以上的深孔冷压光工艺。一、深孔冷压光的挤压工具深孔冷压光工具的结构如图1所示。工具的结构简单,制造容易,使用方便。它共有八个挤压块,第一个先进入工件,其实际尺寸应与工件内孔需镗的实际尺寸相同;自第二个起依次增加0.01毫米,至第八个挤压块的实际尺寸,可略小于工件孔的最大极限尺寸。挤压块的尺寸和形状如图2,直接影响工件的几何形状和尺寸精度。挤压块倒角R处的光洁度必须达到▽▽▽▽10。
Medium carbon steel workpiece processing φ250 D_4 mm, 1850 mm long large diameter deep hole, finish requirements ▽▽▽ above, the general method is difficult. Because if using grinding, there is no such large internal grinder; such as the use of boring, finish less than requirements; such as the use of rolling, honing, productivity is not high, the quality is unstable. To this end, I plant workers under the leadership of the party, in response to this problem, after hard study, and finally succeeded in innovation to achieve ▽ ▽ ▽ more than 7 deep-hole cold light technology. First, the deep hole cold light extrusion tool Deep hole cold light light tool structure shown in Figure 1. The structure of the tool is simple, easy to manufacture and easy to use. It has a total of eight extrusion block, the first into the workpiece, the actual size should be the same as the actual size of the bore hole to be boring; from the second increase in order of 0.01 mm, to the actual size of the eighth extrusion block, Slightly smaller than the maximum limit of the workpiece hole size. Extrusion block size and shape shown in Figure 2, a direct impact on the workpiece geometry and dimensional accuracy. The finish of chamfering R at squeeze block must reach ▽ ▽ ▽ ▽ 10.