Inspection & Metrology: ‘We must never stand still’
Small series and prototype production at ZF Friedrichshafen AG create new challenges for quality control time and again: measurement programs for new components need...
Tooling & Workholding: Making Out-of-Round Parts Round
One of the most vexing problems in machining today is how to most efficiently make an out-of-round part round. In the days of thick-walled...
Tooling Workholding: A new solution for bevel gears
The creativity of the designers knows no bounds with new drive element and gear geometries. Faced with constantly increasing demands from a wide variety...
Is anyone printing gears using metal additive manufacturing?
The AGMA Emerging Technology Committee wanted to look at additive manufacturing through the lens of the goal of the committee: “Identify, investigate, and inform...
Online exclusive: How many mils is your coating?
Instantaneous handheld coating thickness gauges that can be operated by virtually any technician deliver lab-quality readings even on curved and complex surfaces like gears.
From...
Tooling & Workholding: A success story: Low-deformation workpiece clamping
Those who want to turn, mill, or grind rings, flanges, housings, or other thin-walled parts will quickly reach the limits of what is possible...
Two-Probe Pitch Inspection Method For Large Gears
A gear’s pitch (a k a index or spacing) accuracy is one of the most fundamental gear characteristics affecting its performance. Pitch errors affect...
Chamfer Hobbing, Perfect Timing
New gearbox developments, particularly for eDrives, are creating a whole new set of gear design and manufacturing criteria. Compact gearbox design is paramount, and...
Residual Stresses in Case Hardened Steel Gears
Aerospace gear components are required to demonstrate excellent load-carrying and endurance characteristics. Case-hardened steels are often used for these parts. During the manufacturing process...
Choosing the proper grinding wheel
Methods of gear grinding have changed over the years. As manufacturing standards get tighter, the right machines and abrasives needed to meet specifications have...
Why are Today’s Hypoids the Perfect Crossed-Axes Gear Pairs?
In 1924, Ernest Wildhaber, a well-known gear scientist, invented hypoid gearing. Compared to spiral bevel gears, hypoid gears provide an offset that allows lowering...
Increasing Static Friction with Laser
Flat and curved surfaces with functionality of high static friction are increasingly needed for force-fitted nonslip power transmissions. The motivation is driven by the...
Hydraulic workholding takes hold
In the brave new world of smart factories, Internet 4.0 and highly automated machines and cells, workholding rarely gets top billing. It’s surprising that...
Still Stuck with Hand Deburring?
No blueprint ever revealed, nor engineer ever designed, a part with burrs. It is only after a process is selected for making a part...
Industrial gear lubricants face formulation challenges
Gears transmit motion from one shaft to another or from a rotating shaft to a reciprocating element. Gears transmit power, change speed, change force...
Advantages of a dual-screw H-Frame broaching machine
Like any industry, in the machine-tool industry, the needs of the market drive new designs and the development of new technologies. Naturally, everyone wants...
Streamlining safety for high-speed/small-footprint milling machines
Safety in design is critical to CNC milling operations end products as well as to the machine’s profitability. As the trajectory of today’s new...
Integrating Non-Contact Metrology in the Process of Analysis and Simulation of Gear Drives
Speed and accuracy are critical factors for gear inspection. The faster the inspection process, the larger number of gear units can be inspected. The...
Design features of perfect gears for crossed-axes gear pairs
Gearings that operate on crossing axes of rotation of a gear and a mating pinion have been known for centuries. Common sense and accumulated...
Magnetic Barkhausen Noise as an Alternative to Nital Etch for the Detection of Grind Temper...
The detection and prevention of grinding burn is critical to the production of ground gears of all types and sizes. Overheating during grinding, or...
