A discussion of the 3D heat-treatment process called Direct Metal Laser Sintering
Selling the Wheel, a book by Jeff Cox, tells the story of Max, a stone-age entrepreneur who creates the wheel and is looking to...
Q&A with Dennis Richmond
Reishauer has a range of gear grinding machines. What sort of capabilities do you offer?
We have a family of smaller grinding machines with capacities...
Powder Metal Gears, Part VII
So far, five powder metal gear related topics have been covered: effects of porosity, noise and NVH, micro design and robustness, macro design and...
The spiral tooth form, as with the helical gear, provides a smoother and higher...
An analogy can be drawn between a spur and helical gear and the straight and spiral bevel gear. The pitch surfaces and the conjugate...
Machining – more specifically, the tools that make removing metal possible
Decades ago there was only one option: High-speed tool steels such as molybdenum types M2, M4, M50, and the tungsten series T15 for example....
Q&A with Justin Gordon
Tell our readers a little bit about the workholding products Fairlane provides.
We manufacture serrated grippers and other workholding components—the contact points that hold onto...
Powder Metal Gears, Part VI
The heat treatment issue discussed in previous columns remains for the rollforming as well; low-pressure carburization helps, due to a better process when introducing...
There are four standardized AGMA systems of bevel gear tooth proportions: 20° straight bevel,...
In this month’s edition of Tooth Tips, let’s take a look at bevel gears at angles other than 90º.
When the sine of the angle...
Finding the perfect heat treat
Three on the tree; four-on-the-floor; four speed automatic; five speed manual; six speed automatic; six speed manual; seven, eight, and nine speed automatic…where will...
Q&A with Bill Gay
What’s so important about choosing the right lubricant for gear production?
With the right lubricant, it all comes down to contamination elimination, which extends the...
The choice of straight bevel tooth forms limited to those forms that can be...
Continuing our discussion of bevel gears, let's take a look at the design of the straight bevel tooth. In Figure 1, it can be...
Getting the right training
If I’ve told you once I’ve told you a thousand times: Close the door — and don’t slam it! That command, albeit in a...
Powder Metal Gears, Part V
So far we covered porosity of powder metal and some of its effects: Noise and NVH, macro design and reduced weight, and micro design...
Q&A with Zen Cichon
Innovative Rack and Gear services the oil, aerospace, steel, marine, automation, machine tool, computer, medical, and precision instrument industries and supplies gear racks to...
Powder Metal Gears, Part IV
In the previous article, the micro design, in the sense of profile modifications to the teeth, was discussed. This fourth article will deal with...
Accurate thickness, taper, gear blanks, proportions, other specifications necessary for maximum gear performance
Gear Blanks
Bevel gears are almost always produced from shaped blanks. Therefore, more care and attention has to be taken in the selection of the...
Gas vs. electricity
Do you have gas? Every year we encounter at least one OEM or new heat treater looking at heat treating in-house, and we ask...
Q&A with Chuck Chen
Tell me a little bit about the history of Luren. I understand you are based out of Taiwan.
Yes, that is correct. We are located...
Powder Metal Gears, Part III
Since the Young’s modulus and Poisson’s number are density-related, it is important to use the PM relevant numbers in the design phase of the...
Bevel gears, pressure angles and their relationship
In this edition of “Tooth Tips,” I’d like to examine straight-tooth bevels, the oldest form of a true bevel gear. It is one of...
