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1.设备累计运转__小时后做一次一级保养,是以__为主,__配合。设备累计运转__小时后做一次二级保养,是以__为主,__参加。2.有一1:12的锥孔,大端内径D=120毫米,孔深L=300毫米,求小端内径?3.在镗床上铰孔,如铰刀中心与镗杆中心不同心时,对加工质量有何影响?4.按图1所示,计算B-C两孔和A-C两孔之间的距离。5.计算图2所示镶条的斜度和小端尺寸。6.标注图3所示标准麻花钻的组成部分和切削部分。
1. The cumulative operation of equipment __ hours after a maintenance, is __ based, __ with. __ hours after the cumulative operation of equipment to do a second maintenance, is __ based, __ to participate. 2. There is a 1:12 tapered bore, large end diameter D = 120 mm, hole depth L = 300 mm, and small end diameter? 3. Reaming holes in the boring machine, such as reamer center and boring bar center is not the same heart, How does it affect the quality of the process? 4. Calculate the distance between the two holes BC and AC as shown in Figure 1. 5. Calculate the slope and small end dimensions of the insert shown in Figure 2. 6. Mark the components and cuttings of the standard twist drill shown in Figure 3.