Planetary screw and toolroom machine with planetary screw

Abstract

The invention provides a planetary screw and a toolroom machine with the planetary screw. The planetary screw and the toolroom machine with the planetary screw are used for solving the problems of complex structure and rotary noise of an existing planetary screw. The planetary screw comprises a main screw, a nut and a planet group, wherein the main screw is provided with an external thread and a connecting part; the nut is provided with a hole for penetrating through two end surfaces of the nut, and the inner wall surface for forming the hole is provided with an internal thread; and the planetgroup is provided with a supporting structure, the supporting structure is used for supporting a plurality of rolling columns to position and rotate on the supporting structure, the multiple rollingcolumns are the same with one another and provided with external threads, and the external threads of the multiple rolling columns mesh with the external thread of the main screw and the internal thread of the nut. The planetary screw can be used for the toolroom machine.

Description

technical field [0001] The invention relates to a linear translation mechanism and a machine tool with the linear translation mechanism, in particular to a planetary screw for converting rotary motion into linear translation motion, or converting linear translation motion into rotary motion, and a planetary screw with the same machine tool. Background technique [0002] Please refer to figure 1 , which is an existing planetary screw 9, the planetary screw 9 is provided with a plurality of rollers 93 between a main screw 91 and a nut 92, the main screw 91 has an external thread 911, and the nut 92 has an internal The thread 921 and the non-thread 922 part on both sides of the internal thread 921 section, the non-thread 922 part accommodates a collar 94, the collar 94 has inner ring teeth 941 and a fixed plate 95, the plurality of rollers 93 They are identical to each other and have external threads 931 and external teeth 932, and the two ends of the plurality of rollers 93 ...

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned existing planetary stud 9, in order to ensure that the plurality of rollers 93 can rotate around the main screw 91 and the nut 92 in a stable manner, the outer teeth 932 are additionally processed on the plurality of rollers 93, and Process the two non-threaded 922 parts in the nut 92 to accommodate the collar 94, and process the inner ring teeth 941 in the collar 94, so the structure of the existing planetary screw is complicated and causes processing costs additional questions

[0005] In addition, the lubricating oil will still be gradually lost along the parts of the external threads 911, 931 where the main screw 91 and the plurality of rollers 93 are screwed together, which will cause noise when the planetary screw rotates, and the two parts need to be frequently disassembled. After the end cap 96, the two fixing plates 95, the collar 94 and the plurality of rollers 93, the lubricating oil is filled in the nut 92 and between the two fixing plates 95, so that the lubricating oil Filling becomes troublesome and difficult

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