Transmission mechanism

Abstract

The invention provides a transmission mechanism, and relates to mechanical manufacturing technology for machining workpieces or other products with variable elliptical sections. The transmission mechanism comprises a box body, a power shaft, a steering gearbox A, a steering gearbox B, a sliding transmission shaft, a guide rail mechanism, an eccentric shaft or a crankshaft and a connecting rod. In the prior art, the numerical control interpolation technology cannot guarantee the continuity and smoothness of the variable elliptic curve surface of a machined workpiece, the profiling profiling machining cannot meet the high-precision requirement, and the high requirements of the workpiece shape and position precision, the surface quality and the curve surface consistency cannot be guaranteed. The transmission mechanism is applied to machining and manufacturing of the variable-ellipse workpiece, the problems are fundamentally solved, and it can be guaranteed that the continuous smooth curve surface of the workpiece is actively and controllably machined and formed; and meanwhile, it is guaranteed that higher machining precision, form and position precision, surface quality and workpiece curved surface consistency are obtained, and the machining process is simpler, more convenient and more efficient.

Description

technical field [0001] The invention relates to the mechanical manufacturing technology of a workpiece or product with a variable ellipse cross section, in particular to a transmission mechanism. Background technique [0002] For the manufacture of workpieces or products with variable ellipse cross-sections, CNC interpolation processing and profiling processing are usually used. Typical applications of CNC interpolation processing technology include the processing of piston skirts changing to ellipse, and special CNC lathes for clamping piston blanks Rotating at a high speed, the tool holder servo system controls the high-frequency response of the tool and adjusts the feed rate to fit the variable elliptic curve as much as possible to realize variable ellipse processing. Two powers participate in the variable elliptic curve forming from different directions. In this key process, the tool feed must accurately track the rotation angle of the spindle during the machining proces...

AI Technical Summary

Problems solved by technology

[0002] For the manufacture of workpieces or products with variable ellipse cross-sections, CNC interpolation processing and profiling processing are usually used. Typical applications of CNC interpolation processing technology include the processing of piston skirts changing to ellipse, and special CNC lathes for clamping piston blanks Rotating at a high speed, the tool holder servo system controls the high-frequency response of the tool and adjusts the feed rate to fit the variable elliptic curve as much as possible to realize variable ellipse processing. Two powers participate in the variable elliptic curve forming from different directions. In this key process, the tool feed must accurately track the rotation angle of the spindle during the machining process, and the position error makes it difficult to guarantee the contour accuracy; the more fundamental problem is that the NC interpolation technology uses the computer to take points or optimize the points to process, the tool must be in the The cutting process is completed in the high-frequency response reciprocating motion. This is a discontinuous intermittent cutting process. There must be a step or an arc between the two cutting points. The processed curve cannot be continuous and smooth. It is determined in principle that it cannot be directly processed. Forming continuous and smooth variable elliptic curved surfaces, the surface quality is difficult to meet the high requirements; the profiling method, the processing accuracy is even more difficult to meet the high requirements, and the processing accuracy of the mold itself and the surface quality of the curved surface are also difficult to meet the high requirements

There has been no processing technology method for continuous and smooth forming of non-circular curved surfaces of variable ellipse workpieces.

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