Special peed change mechanism for numerical control machine tool

Abstract

The invention discloses a special speed change mechanism for a numerical control machine tool. The special speed change mechanism comprises a driving device, a gear shifting device and a speed change device. An output shaft of the driving device is connected with an input shaft of the speed change device. The gear shifting device is connected to the speed change device through a shaft. The driving device of the mechanism can achieve interconversion of two rotating speed ranges and torque through gear shifting in a rated speed and rated torque state, and therefore working efficiency is improved. In the mechanism, the driving device is connected with the input shaft of the speed change device through a coupler, the torque of the driving device can be transmitted to the speed change device to the maximum degree, and the coaxiality of the driving device and the speed change device can be adjusted through the coupler. A gear shifting hydraulic oil cylinder or a gear shifting air pressure lever is adopted in the gear shifting device of the mechanism, the proven technique is adopted in the gear shifting device, it can be guaranteed that enough pressure is provided, and both maintenance and preservation at the later period are very convenient and quick. The mechanism is compact in structure and low in manufacturing cost and difficulty brought for an operator.

Description

technical field [0001] The invention relates to numerical control equipment, in particular to a speed change mechanism dedicated to numerical control machine tools. Background technique [0002] CNC machine tool is the abbreviation of numerical control machine tool, which is an automatic machine tool equipped with a program control system. The control system can logically process programs with control codes or other symbolic instructions, decode them, express them in coded numbers, and input them into the numerical control device through the information carrier. After calculation and processing, various control signals are sent by the numerical control device to control the movement of the machine tool, and the parts are automatically processed according to the shape and size required by the drawing. CNC machine tools solve complex, precise, small-batch, and multi-variety parts processing problems. It is a flexible, high-efficiency automatic machine tool that represents the...

AI Technical Summary

Problems solved by technology

At present, the gear transmission mechanism of CNC machine tools basically has two forms: manual operation mechanism and hydraulic transmission mechanism. Among them, the structure of manual operation mechanism is relatively simple and primitive, but it is inconvenient to work on the CNC machine tool, and it cannot be fully automated during the working process of the machine tool. When shifting, the operator needs to stop the main rotation of the machine tool. Manually shifting gears, the shifting efficiency is low; the hydraulic shifting mechanism uses hydraulic cylinders or pistons to push the sliding gears to move to achieve shifting. It is currently the most widely used shifting on CNC machine tools. The mechanism adopts the method of rotating at low speed first and then meshing when shifting gears, but its disadvantage is that it needs to run at low speed first to avoid the top teeth, resulting in long shifting time, low efficiency, and the need for complex hydraulic system support, which increases product costs.

Images