Engineering

Snippets and pages about engineering – if you’re looking for the Workshop Calculator this page has the download.

Belt Drives – an overview of the different forms of belt drive along with some of the pro’s and con’s of each type.

Centre Drills – the profile of the drill and how this captures a small amount of oil that keeps a fixed centre lubricated.

Drill Bit Basics – some fundamental basics around drill bits from 100 years ago – little changes in engineering. Drilling a hole accurately in a pillar drill or mill just takes patience to centre, drill slightly under size and then finally at size.

Gear Design – Some fundamentals about gear terminology and design parameters, separate page on some of the basics with regards to gear noise. Gear cutting with the HobbyMat lathe and a Unimat 3 milling head or gear cutting with a rotary table.

Lathe Tools – cutting angles required for different materials, a description of the different types of material used for lathe tools and some basic hints and tips on setting up the tool in the toolpost.

Metals – a page about all of the different types of metal, along with cutting tool parameters and examples of the use.

Noise & Vibration – Any unwanted acoustic response or vibration – can be related to tool chatter, motor noise, gear noise or noise from an engine exhaust.

Nuts & Bolts – A type of hardware fastener with a threaded hole & a cylindrical threaded fastener – together we have a nut & bolt

Oil & Lubrication – Liquid that reduces friction or wear, or both, between the moving parts within an engine; removes heat, particularly from the underside of pistons; and serves as a combustion gas sealant for the piston rings.

Plastics – lots of different plastics are used in model making and in model engineering. Notes and hints on cutting, turning and finishing along with types of glue that can be used.

Radiused Connecting Rods – there are a number of ways of machining the radius on the end of connecting rods, one way is to use the hole in the end as a pivot in the machine vice and make lots of flats.

Tapers – Jacobs for chuck arbors and Morse for machine to chuck arbors, centres etc.

Threads – A helical projection of uniform section on the internal or external surface of cylinder or cone. Also, the operation of cutting a screw thread. Lots of subpages to this including: BAmetric threads See also the life of the tap wrench.

Tool Manufacturers – as I buy tools I thought it would be nice to write something about the manufacturer, especially as some have ceased to trade.

Workholding – there are many different ways to hold a workpiece. Sometimes the fun of engineering is working out how to hold and machine a part. Sometimes you need inspiration.