The application of motion geometry measurement in the measurement of straight bevel gears When machining straight bevel gears, regardless of the planer or grinding process, the contour shape of the profiled tool face is the corresponding flat-top bevel gear tooth shape. The motion relationship between the gear cutter formed by the machining machine drive chain and the gear to be machined is in accordance with the meshing transmission relationship between the flat-top bevel gear and the bevel gear to be machined. The single-bit bevel gear overall error measuring instrument developed according to the principle of motion geometry measurement adopts the measuring straight bevel gear with special controlled measuring ridge line as the measuring component, and the measured straight bevel gear is controlled at a single point. In the yoke state, the single-toothed tooth meshing measurement motion (inter-tooth is to ensure single-tooth meshing), and the motion accuracy of the measured straight bevel gear can be measured by comparing with the theoretical motion relationship.
In the measurement process, since the measuring component is in single contact with the measured gear, the measurement error is the transmission error of the measured gear at that point. After the measurement result is calculated and coordinate converted according to the meshing motion equation, the Geometric position error of the point. During the continuous rotation measurement of the measured gear, the trajectory left by the measured point on the tooth surface is the trajectory of the contact line on the tooth surface when the measured gear and the measuring component mesh with the transmission measurement. According to the measurement needs, the measuring elements with different shape and position measuring ridges are appropriately selected, and the corresponding measuring trajectory can be either the end face profile of the gear or the meshing profile. After the measured transmission error of the trajectory is calculated and converted according to the meshing motion equation, the tooth profile deviation (or the meshing tooth profile deviation) of the measured gear and the spur tooth deviation can be obtained.
In order to detect and monitor the machining accuracy of straight bevel gears for automotive differential mechanisms, the author used two measuring cones prepared by different measuring ridgeline manufacturing processes on the bevel gear overall error measuring instrument used in Qingdao Precision Forging Gear Factory. The gears were researched and tested on the factory-produced precision forged straight bevel gears.
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1. Plestic cable chain Material: reinforced nylon. It can stand with high pressure and has good tensile strength, toughness and elasticity, wearing and falmable resistance
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3. operating speed and acceleration: Max.operating speed is 5m/sec. and max.acceeleration is 5m/sec. (specfic speed and acceleration depends on specific situation).
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