Product Description
A helical gear is a type of gear used to transmit power between two parallel shafts. It is similar to a spur gear, but its teeth are cut at an angle to the axis of the gear, forming a helix. This helical shape allows for smoother and quieter operation than a spur gear.
Helical gears are commonly used in power transmission applications, such as in automotive transmissions, industrial machinery, and other mechanical equipment. They are available in a range of sizes and materials, including steel, brass, and plastic.
The main advantage of helical gears is their ability to transmit power smoothly and quietly, with less vibration and noise than spur gears. They also have a higher load-carrying capacity than spur gears, due to the larger contact area between the teeth. However, they do require more complex manufacturing processes, which can make them more expensive than spur gears.
There are different types of helical gears, including parallel helical gears, cros.sed helical gears, and double helical gears (also known as herringbone gears). Each type has its own advantages and disadvantages, depending on the application requirements
Machinery processing
Design and Material Selection: The design process involves determining the specifications of the gear, including the number of teeth, pitch, pressure angle, and helix angle. The material selection process involves selecting a material that is suitable for the application, such as steel or bronze.
Blank Preparation: The blank preparation process involves preparing the gear blank, which is a cylindrical piece of material that will be used to create the gear. This is typically done by turning the blank on a lathe to the desired size and shape.
Cutting Teeth: The teeth of the helical gear are cut using a milling machine or a hobbing machine. The milling machine uses a rotating cutter to cut the teeth, while the hobbing machine uses a rotating cutting tool called a hob to cut the teeth in a continuous process.
Heat Treatment: The gear is then heat-treated to improve its hardness and strength. This is typically done by heating the gear to a specific temperature and then cooling it in a controlled manner.
Finishing: The final step in the process is finishing, which involves grinding, polishing, and deburring the gear to achieve the desired surface finish and tolerances.
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