Published on 29th Jan '14 14:52
Number of Views: 1759
Can you contribute any technical articles, industry news reports, engineering blogs or CAD tutorials to the Mechanical Design Forum? We're looking for new writers to bring the best mechanical engineering content to our members. Please email if you're interested, and give me an idea of what you'd like to offer. Here are some guidelines of what you can contribute:
1) Blog You are welcome to start your own blog relating to mechanical
Published on 28th Jul '12 22:51
Number of Views: 2500
The Mechanical Design Forum is now 3 years old. It really doesn't feel like that long since it was started.
Below are a few screenshots of how the site has developed over the last three years.
The current incarnation of MDF (let's call it MDF 2.0) uses the excellent vBulletin software. The previous versions that are pictured below (let's call them MDF 1.0 to 1.3) used phpBB. The latter is open-source so it's freely available.
Published on 16th Jul '12 22:15
Number of Views: 17356
Here are some notes on car wheels that we put together a few years ago as part of a university project. These notes give some insight into the history, manufacturing processes, materials and design considerations relating to car wheels.
The first light-alloy sheet wheels were used in Daimler-Benz and Auto-Union racing cars in the 1930s. In the 1960s, Porsche began the batch production of sheet wheels, which consisted
Published on 28th Apr '12 08:40
Number of Views: 13772
Electro-Discharge Machining (EDM) is machining with sparks. The work-piece is held in a jig submerged in a dielectric fluid such as kerosene. A power supply generates rapid electric pulses that create a discharge between the work piece and an electrode (a continuous wire or a shaped graphite form) at the point at which the two are closest. The discharge creates a plasma causing the melting, and probably the vaporisation,
Published on 28th Jan '12 23:32
Number of Views: 10151
Here's is a great piece of freeware. It's simply called "convert" by Josh Madison. It's an amazingly useful program - something that every mechanical engineer should have on their desktop! It's function is simple - it converts any imaginable unit of measure. Force, mass, volume, acceleration, density, distance etc. Here's a screenshot:
Published on 26th Oct '11 22:46
Number of Views: 10138
A coherent beam of monochromatic light is focused on the workpiece causing material removal by vaporisation. Machines are generally CAD/CAM compatible, with 3-axis and 5-axis machines being generally available.
Profile creation of sheet metal parts is the most common applications, but it is also possible to drill holes and create blind features in many different types of material.
Gas-assisted laser beam machining
Published on 25th Oct '11 23:15
Number of Views: 7987
Electrical Discharge Wire Cutting (EDWC) involves a continuously spooling conductive wire (the most widely used is brass). A power supply generates rapid electric pulses that create a discharge between the workpiece and electrode (the wire). The discharge causes the melting, and probably the vaporisation, of a minute piece of material, slowly eating into the work piece. Any electrical conductive material can be machined
Published on 24th Oct '11 21:34
Number of Views: 5212
This is a metal cutting process that uses a high temperature stream of ionised gas through a water-cooled nozzle at very high velocity. An arc is formed between the electrode and the workpiece, which is constricted by a fine bore copper nozzle. Oxygen oxidises the workpiece material, and it is melted by the exothermic reaction. The melted metal is then blown away from the line of cut. Temperatures can reach up to 20,000˚C.