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测量内孔用的塞规,通常采用碳素钢工具淬火后磨削而成,由于材料所限,淬火硬度最高只能达HRC 60～62,因此耐磨性较差。如我们厂生产的195机油泵中的内转子、泵体、泵盖用的ф13塞规每加工1～2千件后便磨损严重,每年用于加工塞规的费用很多。为此我们改用了如图所示镶硬质合金的塞规,这种塞规可检验零件达十万件,大大提高了经济效益。制作方法:塞规淬火前在外圆上等分的铣出六个槽,槽深2毫米,六个
Gauges used to measure the bore, usually carbon steel tool after grinding hardened, due to limited materials, the highest hardness of only HRC HRC 60 ~ 62, so wear resistance is poor. Such as our factory production of 195 oil pump rotor, pump body, pump cover ф13 plug gauge for each processing of 1 to 2 thousand pieces of serious wear and tear, the annual cost for processing plug gauge. To this end, we use the plug shown carbide carbide, the plug gauge can inspect parts up to one hundred thousand, greatly improving economic efficiency. Production method: Cypriot quenching before the outer circle on the milling of six slots, slot depth of 2 mm, six