Two-piece tooth type indexing table based on worm and gear pair and gear compound transmission

Abstract

The invention relates to the technical field of workbenches, in particular to a two-piece tooth type indexing workbench based on worm and gear pair and gear compound transmission, which comprises a bottom shell, an oil pressure assembly, a mandrel, a disc surface, a transmission assembly and a driving assembly, and a mounting interface seat is arranged in an inner cavity of the bottom shell; the oil pressure assembly is fixed in a central mounting hole of the mounting interface seat; the mandrel is rotationally arranged in the oil pressure assembly through the first bearing set arranged in the axial direction and the second bearing set arranged in the radial direction. A gear ring is fixedly arranged on one side, close to the mounting interface seat, of the disc surface; the transmission assembly comprises a gear shaft and a worm gear fixedly arranged on the gear shaft in a sleeving mode. A gear meshed with the gear ring is arranged at the top of the gear shaft, and a worm on the driving assembly is meshed with the worm gear. Two-stage speed reduction is achieved through the worm and gear pair and the gear, so that the speed reduction ratio is increased, the torque needed by workpiece cutting is fully met, the constancy of the meshing face of the worm and gear is kept, the accuracy of meshing of two teeth is guaranteed through the floating type mandrel, and the positioning precision of the disc face is improved.

Description

technical field [0001] The invention relates to the technical field of workbenches, in particular to a two-piece tooth-type indexing workbench based on the compound transmission of worm gears and gears. Background technique [0002] With the progress of society, the development of technology and the new market requirements of equipment manufacturing, the requirements for machining accuracy of mechanical parts are getting higher and higher. As an indispensable functional component of CNC boring and milling machines, gantry machining centers, CNC gear milling machines, gear grinding machines, etc., CNC rotary tables are developing towards higher precision and better precision retention. [0003] The traditional two-piece toothed indexing table mainly adopts the transmission form of worm gear and worm pair. The worm wheel is fixed on the mandrel, and the mandrel is set on the fixed seat of the workbench through the relative rotation of the bearing group, and the worm is set on ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a two-piece tooth-type indexing table based on the compound transmission of worm gear and worm pair and gear, so as to solve the problem that the transmission ratio is small and cannot provide the torque required for workpiece cutting, and the worm gear and worm pair are in sliding contact. The resulting wear of the tooth surface leads to an increase in the meshing gap, which seriously affects the transmission accuracy and transmission stability of the turntable.

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