精刨代刮研是铸件精加工的一种先进工艺。过去,北京第一机床厂所采用的是窄刃硬质合金刨刀,宽度为8～15毫米,走刀量0.8～1毫米/双行程,不但生产效率低,而且表面光洁度差,仅为▽▽6下限。在第三个五年计划开始的第一年,面临着提高效率、提高质量的迫切要求,对导轨要求精刨加工表面光洁度达▽▽▽7,班产量也要相应地提高。为适应上述要求,该厂最近采用硬质合金宽刃精刨刀来代替窄刃精刨刀,经过试验后已取得了 Fine Planing Scraping is an advanced process of casting finishing. In the past, the first Beijing Machine Tool Plant is narrow blade carbide planing knife width of 8 to 15 mm, take the amount of 0.8 to 1 mm / double trip, not only low production efficiency, but also poor surface finish, only ▽ ▽ 6 lower limit. In the first year of the third five-year plan, we are faced with the urgent requirement of improving efficiency and improving quality. The guide rails are required to finish the machined surface with a finish of ▽ ▽ ▽ 7, and the class output should also be raised accordingly. In order to meet the above requirements, the plant recently used carbide wide blade precision sharpener to replace the narrow blade fine sharpener, after the test has been made