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就目前情况看,钢或铸铁零件的内孔在精镗后,其光洁度能稳定达到▽▽6的并不多,如要达到和稳定在▽▽▽7就更困难了。应用滚压工具,可以提高内孔的精度和光洁度。先将钢件内孔预先加工至▽▽5～▽▽6,再用滚压工具加工,光洁度一般可达▽▽▽▽10,尺寸精度在0.01毫米左右。若将孔加工至▽3～▽▽4,滚压后光洁度可达▽▽▽8～▽▽▽9(加工铸铁件,光洁度相应的低二级)。此外,还可部分消除椭圆度和锥度。一、工作原理如图1,滚子5绕刀杆13公转的同时,本身也自转,其旋转扭力由机床主轴传来。未滚压时,滚子与隔离套4对刀杆无相对转动,滚子也不自转。滚压时,滚
The current situation, the steel or cast iron parts bore after fine boring, the finish can be stable to reach ▽ ▽ 6 is not much, to reach and stabilize at ▽ ▽ ▽ 7 even more difficult. Application of rolling tools, can improve the accuracy and finish bore. First steel hole pre-processed to ▽ ▽ 5 ~ ▽ ▽ 6, and then rolling tool processing, finish generally up to ▽ ▽ ▽ ▽ 10, dimensional accuracy of about 0.01 mm. If the hole is machined to ▽ 3 ~ ▽ ▽ 4, the finish after rolling up to ▽ ▽ ▽ 8 ~ ▽ ▽ ▽ 9 (cast iron parts, the corresponding lower finish). In addition, ovality and taper can be partially eliminated. First, the working principle shown in Figure 1, roller 5 around the knife 13 revolutions, itself also rotation, the rotation torque from the machine tool spindle came. Not rolling, the roller and the sleeve 4 relative to the arbor no rotation, the roller does not rotate. Roll, roll