Computing formula for processing rocker shaft eccentric toothed sector of numerical control gear shaping machine and processing method

Abstract

The invention discloses a computing formula for a numerical control gear sector gear slotting machine to process an eccentric gear sector of a rock arm shaft, and a method for processing the same. The computing formula comprises a computing formula of the hobbing radial radius rho of the eccentric gear sector of the rock arm shaft, a computing formula of the corresponding arc length of the revolution angle of the eccentric gear sector of the rock arm shaft and a computing formula for processing the contour curve of a reference circle of the eccentric gear sector of the rock arm shaft. The processing method comprises the following steps: 1) starting a program; 2) computing the initial position of the eccentric gear sector of the rock arm shaft; 3) starting auxiliary actions; 4) starting to cut the position; 5) inputting the cutting parameter into a numerical control register; 6) computing the displacement at three coordinate axes by a numerical control system; 7) cutting the contour line of the eccentric gear sector through the linkage of the three coordinate axes; 8) extending the Z axis to a retracting position; 9) extending the Y axis and the X axis to the retracting position; 10) stopping a cooling fluid and stopping a slotting cutter; and 11) ending the program. The computing formula and the method have the advantages that a parameterized programming can finish the computation and processing of the contour curve of the whole workpiece, and the parameter can be input into the numerical system in a short time to achieve the requirement of processing an eccentric distance gear sector.

Description

technical field [0001] The invention relates to a calculation formula and a processing method for machining an eccentric gear sector of a rocker arm shaft, in particular to a calculation formula and a processing method for processing the eccentric gear sector of a rocker arm shaft on a numerically controlled gear sector gear shaper. Background technique [0002] At present, a rocker shaft eccentric tooth sector is provided on the steering gear of an automobile, and there is an eccentricity between the center of the rocker arm shaft eccentric tooth sector and the rotation center of the rocker shaft, and the middle tooth thickness of the rocker shaft eccentric tooth sector is larger than the standard tooth The thickness of the above-mentioned rocker shaft eccentric gear sector in the prior art is: placing the rocker shaft eccentric gear sector in a fixture with an eccentric distance, and then processing the ordinary cylindrical gear with a CNC gear sector gear shaper. The ecce...

AI Technical Summary

Problems solved by technology

[0003] The processing method of the above-mentioned prior art has the following defects: the eccentric tooth segments of the rocker shafts of different specifications have different eccentric distances, which require fixtures of different specifications. The above-mentioned processing method has many fixtures, which not only brings cumbersome design, Manpower and material resources are also increased in manufacturing

In the processing process, if the jig is replaced, the machine tool must be adjusted, which not only increases the workload and working hours of the operator, but also increases the product cost

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