Example 1 Is a thread with a tooth type of equilateral triangle, a nominal diameter of 36, and a pitch of 2 considered as a standard thread?Solution: According to the table of the given conditions, the thread whose profile is equilateral triangle and pitch is 2 is an ordinary thread.The basis is that in the diameter and pitch of the ordinary thread in Schedule 3, the nominal diameter 36 can be found (in the first series), and then the pitch can be found along the transverse, and the pitch 2 can be found in the fine tooth bar. Therefore, the thread given is a standard fine ordinary thread.
Briefsummary
First, in the specified drawing of the thread, three lines should be seized.The top of the tooth is indicated by a thick solid line (diameter that can be felt with the hand).The tooth base is indicated by a thin solid line (the diameter is not palpable by hand). The thread termination line is represented by a thick solid line.2Notice how the section lines are drawn in the section view.Second, the purpose of thread labeling is mainly to reflect the type and parameters of the thread. The dimensional boundary should be drawn from the large diameter.Third, bolts, screws, studs, nuts, washers are standard parts, master the simplified drawing of its connection assembly drawing, pay attention to compare their similarities and differences. Know what they’re tagged with.
Post time: Sep-15-2023