machine drawing lecture 2 - ahmed nagib drawing...machine drawing lecture 2. machine drawing lecture...

Machine Drawing

Lecture 2

Dr./ Ahmed Nagib

October 11, 2015

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Fasteners Threads

Threaded products incorporating helical surfaces are divided into two

groups:

1. Fasteners, designed for holding together the various parts of a

structure, e.g., bolts with nuts, set screws, studs, etc.

2. Various kinds of screws and worms, designed to transform rotary

motion into translational motion, e.g., lifting screws, motion screws

worms, etc.

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Fasteners Threads

C-Clamp

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Fasteners Threads

Vice

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Fasteners Threads

Worm and Worm wheel

5

Fasteners Threads

Valve

6

Fasteners 1. Bolts

A bolt and nut in combination is a fastening device used to hold two

parts together.

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Fasteners 1. Bolts

The nuts with internal threads engage with the corresponding size of the

external threads of the bolt.

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Fasteners 1. Bolts

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Fasteners 1. Bolts

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Fasteners 1. Bolts

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Fasteners 1. Bolts

In drawings, threads are not drawn true to life. It would require much

time and work to draw a thread as it really is.

Threads will be drawn as follows

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Fasteners 1. Bolts

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Fasteners 1. 1.Through Bolt

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Fasteners 1. 1.Through Bolt

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Fasteners 1. 1.Through Bolt

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Fasteners 1. 1.Through Bolt

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Fasteners 1. 2. Stud Bolt

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Stuffing Box

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Stuffing Box Parts

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Stuffing Box Parts

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Stuffing Box Parts

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