Planetary speed increasing mechanism device with internally-arranged spindle

Abstract

The invention relates to the field of machine tools, in particular to a planetary speed increasing mechanism device with an internally-arranged spindle. A driving shaft of the device is supported by two groups of bearings fixed in a shell, a driven shaft penetrates through the driving shaft along the axis of the driving shaft, the front end of the driven shaft is fixed to the bearings, the tail end of the driven shaft is inserted into a connecting part, and the connecting part is fixed to the bearings; a gear ring is fixed in the shell and meshed with a planetary gear, and the planetary gear is fixed to the driving shaft through a driving pin to serve as a planetary gear speed increasing mechanism. The planetary speed increasing mechanism device is suitable for some machine tools which are provided with high-speed cutting spindles, grinding spindles and the like and need to provide high-speed rotation, and when the planetary speed increasing mechanism device with the internally-arranged spindle rotates at a high speed, cooling liquid can be provided for a heating portion of the spindle and a rotation tool on the premise that any parts in the device are not influenced.

Description

technical field [0001] The invention relates to the field of machine tools, in particular to a planetary speed-up mechanism device with a built-in spindle, which is suitable for some machine tools equipped with high-speed cutting spindles and grinding spindles that need to provide high-speed rotation, and a planetary speed-up mechanism device with a built-in spindle When rotating at high speed, without affecting any parts in the device, coolant can be supplied to the heat-generating parts of the spindle and the rotary tool. Background technique [0002] Now the requirements for processing efficiency are getting higher and higher, and the requirements for the spindle with rotary tools on the machine tool are also correspondingly increased. On this basis, the planetary speed-increasing mechanism device with built-in spindle is used by most machine tools. It mainly has the following functions: to increase the rotation speed of the input end several times and transmit it to the ...

AI Technical Summary

Problems solved by technology

But at the same time of cooling, since the coolant enters from the outside, it is easy for the coolant to enter the inside of the bearing, affecting the lubrication effect of the bearing, thereby affecting the bearing life; on the other hand, the coolant enters from the outside, and the sealing of the box also increases the difficulty, because It is a high-speed rotating spindle, which wears a lot on the seals, and the seals must be replaced regularly, otherwise the sealing effect will be affected

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