3D COMPONENT FEATURES PROFESSIONAL ENGLISH IN USE FOR ENGINEERING

 

PROFESSIONAL ENGLISH IN USE FOR ENGINEERING UNIT 22. 3D COMPONENT FEATURES

 

A 3D forms of edges and joints The plan and sections below show the end of stainless steel pipe and an access plate, which are part of production line at a chemicals manufacturing plant. The top edge of the plate is chamfered – at an angle of 45 degrees with the sides of the plate. All the other edges are square (90 degrees). Around the bottom of the plate is a rebate – an internal corner. The top of the pipe is also rebated around the inside, so that the bottom of the plate can slot into the top of the pipe. B 3D forms of holes and fasteners ·             The holes in the plate, for screws, are through holes – they go through the metal. The holes in the pipe wall are blind holes – they do not go all the way through. The screws which are intended to be screwed into these holes (by a turning action) have threads (helical grooves). The internal surfaces of the holes in the pipe walls are also threaded.   EXERCISES 22.1 The extracts below are from technical conversations about machine tools. Match the pairs of sentences and choose the correct word from the brackets in the second sentence. Look at A and B opposite to help you. 1. According to the drawing, we cut to a depth of 40 mm in a 60 mm thick plate. 2. The edge of the die is cut off at 45 degrees. 3. The tool is used as a scribe for scratching lines on the surfaces of ceramics. 22.2 Complete the description of a screwdriver and screw using the words in the box. Look at A and B opposite to help you. accommodate constant flush recessed rounded square threaded chamfered countersunk groove ridge slot tapered tip

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