Surface Finishes: Hard Chrome Plating

The most common and long-established method of decorative plating on steel is copper-nickel-chrome plating also known as ‘chrome plating’. In recent years, nickel-chrome plating (semi-bright + bright plating) is also common for its superior corrosion resistance and aesthetic properties. These ...

Surface Finishes: Heat Treatments

Heat treatment is a type of surface treatment that includes hardening and thermal diffusion. Both use heating to apply the surface treatments to the work piece. There are two types of heat treatments hardening and thermal diffusion. In this post, ...

The Technique of Losing Weight: Part Two

Strength and Shape Design Considerations After looking at ways to use different plastics instead of metal in last week’s post, we will examine shape and material in this week’s post. Weight reduction is a design task assigned to many engineers, ...

The Technique of Losing Weight: Part One

In response to concerns about global warming and depletion of subterranean resources such as petroleum oil, the automobile industry is rapidly shifting from gasoline-based cars to hybrid and electric cars. As a CO2 emissions-reduction measure, many countries are competing to make ...

Rotary Bearing Fits and Tolerancing

Rotary bearings are machine elements that support rotating shafts accurately while providing low friction conditions. In order to maintain a stable bearing performance over a prolonged duration, appropriate bearing fit design considerations are required to avoid any negative effects ([Chart 1]) ...

Timing Belt Maintenance and Belt Failure

There are many advantages to a timing belt: positioning accuracy, speed, low maintenance, and high efficiency. In order to keep your belts in good working order there are some basic maintenance and installation procedures that should be followed. If your ...

5 Ways to Build a Culture of Safety

Everyone agrees that the safety of workers must be a top priority within industrial manufacturing environments, but the exact methods that should be employed are more often the subject of debate. There are dozens of ways that a culture of ...

Linear Guide Tips & Tricks: Removing a block from a rail

Linear guides are a staple component in machine design where linear motion and load transfer is a requirement. The typical structure of a linear guide consists of a rail and a block with recirculating balls inside. The balls are retained ...

Understanding Gear Profile and Gear Module

The geometry of a simple spur gear tooth is complex. Numerous dimensional parameters define the shape of the tooth profile, determine how the gears fit together, and identify locations where forces act at the gear teeth.  Two of the most ...

Part I: Comparing Rolled Ball Screws and Ground Ball Screws

At a high level, ground and rolled ball screws appear to function nearly identically within a wide range of mechanical applications.  However, the raceway surfaces, which are very similar to traditional machine screw threads found in a typical screw/nut system, ...