在镗孔时,往往采用敲刀头用试切法进行加工,此法必须进行多次试切反复测量,要有熟练的技术,否则无法保证镗孔精度。这种对刀法很费时,又难以保证工件的精度。我厂一金车间,顶框精镗孔组合机床现已采用自行设计制造的千分尺形式的镗刀对刀仪(可利用报废的千分尺)。一次调整好镗刀尺寸,镗孔精度可达0.01mm。经几年来使用,效果很好,并已推广到其它机床上使用。具体结构见图,它具有结构简单,制造方便,使用调整范围大,示值直观,调整时迅速可靠,使用方便等特点,特别是用在组合机 In boring, often using knocking head with trial and cut method of processing, this method must be repeated test cutting repeated measurements, there must be skilled technology, or can not guarantee the accuracy of boring. This method is very time-consuming knife, it is difficult to ensure the accuracy of the workpiece. I plant a gold workshop, the top box precision boring machine combination has now adopted the design and manufacture of the micrometer in the form of boring knife on the knife (scrapped micrometer available). Once adjust the boring tool size, boring accuracy of up to 0.01mm. After several years of use, the effect is very good, and has been extended to other machine tools to use. The specific structure shown in Figure, it has a simple structure, easy manufacture, the use of large adjustment range, indicating the value of intuitive, rapid and reliable adjustment, easy to use and so on, especially in combination machine