A gear helical spline hole machining device with automatic precision adjustment

Abstract

A gear helical spline hole processing device with automatic precision adjustment, including a base, a broach transmission device and a clamping rotation device, and features: the clamping rotation device is provided with a gear rotation detection device at the workpiece clamping position, and a broach transmission device. There is a moving distance detection device at the installation position of the broach, the gear rotation detection device includes a mounting seat connected with the clamping rotating device, a baffle fixed on the mounting seat and located on the side away from the clamping rotating device, a For the slide rail set on the mounting seat, a pulse encoder fixed seat set on the slide rail, a pulse encoder installed on the pulse encoder fixed base, and a pair of pulse encoder fixed base and baffle set Between the springs, the moving distance detection device includes a sensor guide post and a sliding sensor. Advantages: It avoids the errors caused by gear clearance, transmission chain length and gear deflection, and improves the accuracy and qualification rate of the gear helical spline hole.

Description

technical field [0001] The invention belongs to the technical field of gear hole processing, and in particular relates to a gear helical spline hole processing device with automatic precision adjustment. Background technique [0002] The helical spline gear is mainly used as the starting clutch gear of the motorcycle engine, that is, the gear moves linearly on the starting shaft through the helical spline hole to the position of the engine gear and drives the engine gear to rotate and start, although it is not common in daily life, but The demand is very large and the required machining precision is very high. During the processing of the helical spline gear, the pass rate of the helical spline hole processing is generally low due to the influence of the transmission gear clearance, the transmission chain is too long and the clamping slippage, which is mainly reflected in the helical pitch of the helical spline hole. The helical pitch of the broach is inconsistent, which wi...

AI Technical Summary

Problems solved by technology

Due to the influence of factors such as transmission gear clearance, long transmission chain and clamping slippage during the processing of spiral spline gears, the qualified rate of spiral spline hole processing is generally low, which is mainly reflected in the helical pitch of the spiral spline hole and the The pitch of the helical line of the broach is inconsistent, which will cause the gear to get stuck when sliding through the helical groove. If you want to process a qualified helical spline hole on the gear, you must ensure that the gear rotates once and the broach moves along the broach. The distance remains stable, the theoretical number of rotations and moving distance of the gear and broach during the machining process are calculated by the motor speed and gear ratio, but the actual data are affected by the gear clearance, thread clearance and transmission chain length. The difference is, especially during the broaching process of the broach, if the gear is clamped too tightly, the teeth will be crushed, and if the clamp is too loose, the gear may be deflected. At this time, the gear does not rotate a circle but is broached by the broach The pitch of one rotation greatly affects the machining accuracy of the helical spline hole. Even high-precision machine tools cannot avoid the influence of this situation on the accuracy of the helical spline hole.

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