Bevel tooth differential speed reducer for mechanical main shaft of machine tool

Abstract

The invention relates to a speed reducer, in particular to a machine tool mechanical spindle bevel gear differential speed reducer which comprises an output flange component, a planet support component, a pressing sleeve component and a linkage shaft component. The structure size of the planetary support of the speed reducer is not limited by the radial size of the bevel gear, the bearing capacity is large, the rated output torque of the speed reducer is large under the condition that the size is not changed, and the speed reducer can change the output rotating speed and the reduction ratio. According to the speed reducer, the output power and the output torque of the speed reducer can be increased or reduced at the same time on the premise that the output rotating speed of the speed reducer is not changed, and if a first motor and a second motor arranged on the speed reducer are servo motors, the speed reducer can be accurately positioned; after accurate positioning, positioning torque is maintained to offset reverse torque transmitted by a load device, a small numerical control machine tool has the function of a numerical control rotary table capable of accurately positioning after applying the speed reducer, and the speed reducer is beneficial to design of a small numerical control compound machine tool with a simple structure.

Description

technical field [0001] The invention relates to a bevel gear differential speed reducer for a machine tool mechanical spindle, which relates to a reducer, in particular to a planetary support and an output flange located radially outside of bevel gear 1 and bevel gear 2, with a large rated output torque The machine tool mechanical spindle bevel gear differential reducer. Background technique [0002] The double bevel gear differential speed reduction mechanism of application publication number CN109854681A is a double bevel gear differential speed reduction mechanism that adopts two motors to respectively drive the speed difference between the first double bevel gear and the second double bevel gear to obtain a low speed output. Application publication number CN109736047A relates to a method for controlling a double bevel gear differential speed reduction system of a washing machine, which is a method in which a double bevel gear differential speed reduction mechanism is app...

AI Technical Summary

Problems solved by technology

In order to simplify the structure of the small CNC lathe, instead of using the traditional mechanical transmission mechanism, only a reducer can be configured to increase the output torque of the small CNC lathe. The reduction ratio of the traditional reducer is fixed, and it needs to be low when processing large-sized parts. The speed is high and the torque is large. If only the frequency conversion controller is used to reduce the motor speed, the output power of the motor will decrease, resulting in a decrease in the output torque of the motor through the reducer. The existing reducer technology cannot meet the requirements of large rated output torque of CNC machine tools. And the control requirement of increasing or decreasing the output power and output torque of the reducer at the same time under the premise that the output speed of the reducer remains unchanged

[0005] In the above prior art solution, if the output speed and output power of the two motors are adjusted at the same time, on the premise that the speed difference of the two motors driving the double bevel gear differential speed reduction mechanism remains unchanged, the speed of the two motors can be increased or decreased at the same time. output speed, that is, simultaneously increase or decrease the output power of the double bevel gear differential reduction mechanism driven by the two motors, then the above-mentioned existing technical scheme can realize the simultaneous adjustment of the output power and output torque of the motor when the CNC machine tool outputs the same speed control requirements, but the above existing technical solutions cannot meet the technical requirements of large rated output torque, and the popularization and application of intelligent equipment systems requires a technical solution for reducers with large rated output torque and variable reduction ratio

Images