Metal parts processing, most of the use of mechanical equipment to complete the work, the effect is good, and the processing speed is fast, in a certain range involved is also relatively wide, the era is changing, we need to apply the mechanical equipment is also increasing, different industries, then the types of mechanical equipment, or classification, model are different, precisely because with the times Change, machining precision, requirements are higher and higher. So we must pay attention to the craftsmanship! What are the skills of turning simple shaft in machining knowledge?
Mechanical processing, Dongguan machining skills have what
(1) Before operation, check whether the machine tool operates normally and whether the workpiece and cutter are clamped firmly.
(2) The chuck wrench should be removed immediately after use.
(3) Before turning by hand, the relevant motorized handle should be put in neutral position.
(4) The lathe rotation speed should be suitable and the manual feed rate should be uniform.
(5) When cutting, start the machine first and then feed the tool. After cutting, the tool should be withdrawn first and then stop.
(6) When testing the workpiece, the shift handle should be in neutral position.
What are the machining skills
What is the axial datum in machining knowledge?
Compared with shaft, the expression scheme of sleeve is roughly the same as that of shaft. Generally, only one basic view and a small number of auxiliary views are needed. Only because the sleeve is hollow structure, it is necessary to carry out sectional representation (whether to use full section, half section or partial section depends on the complexity of the internal and external structure shape of the part). The dimension datum only has radial datum and axial datum. The axial datum should be the axial positioning surface when the sleeve is fitted to other parts, that is, the right end face of the left-hand 040 cylinder. The surface roughness requirement is such as the ring plane with Gen value of 0.8.
Mechanical processing, Dongguan machining skills have what
What is the method of threading in machining common sense?
If the diameter of the round rod is too large, it is difficult to insert the die and the thread is not complete if it is too small. The diameter of round rod can be calculated by consulting the manual or empirical formula: the diameter of round rod is 4 = (nominal diameter of thread) – 0.13p (pitch). The end of round rod with thread set shall be chamfered (15 ° ~ 20 °), and the diameter of small end of round rod after chamfering shall be less than the minor diameter of thread, so as to facilitate thread setting. The process of threading is similar to tapping. When threading, the die end face should be strictly vertical to the round rod. When starting to rotate the die, a little pressure should be evenly applied; after 3-4 turns of threading, the die can only be rotated without pressure. In the process of thread setting, it is necessary to reverse frequently for chip breaking. The thread of steel parts should be lubricated with oil.
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