Main shaft drive device

Abstract

The invention discloses a main shaft drive device. One drive group is matched with a back lash eliminating organization to mainly correspond to a gearbox to drive two power output shafts and therefore the main shaft is driven by the two power output shafts to operate. Under the condition that the back lash eliminating organization is not started, due to back lash exists among various transmission gears, interference produced by frictional heating among the various transmission gears can be avoided when the main shaft operates at high speed. And the main shaft is driven by the gearbox and therefore the main shaft has a switch function of high grade speed change and low grade speed change and can widely conduct normal cutting processes. Double output torque and balance drive effect can be achieved due to the fact that the two power output can simultaneously output action power. When the main shaft needs to locate an accurate position, a purpose of accurate position control of main shaft can be achieved through the start of a back lash eliminating function. In addition, cost of the whole drive system can be reduced due to the fact that only one drive group is used by the main shaft drive device as drive force.

Description

technical field [0001] The present invention relates to a spindle drive device, especially a drive structure with a high-speed and low-speed shifting and a backlash elimination mechanism for the spindle, so that the spindle can run at high speed when the backlash elimination function is not activated, and has high- and low-speed shifting The switching function can be widely used in general cutting processing; when the spindle is positioned accurately, the spindle drive device can achieve the purpose of precise spindle position control by activating the backlash elimination function. Background technique [0002] Existing rotary spindles such as figure 1 As shown, in order to be applicable to the general-purpose processing of high-speed low-torque and low-speed high-torque, the driving group 5 usually needs to switch between high and low gears through the gearbox 51, and then transmit the power to the drive shaft 52 through the gear 53. The main shaft 54 ​​is used to meet va...

AI Technical Summary

Problems solved by technology

Since the amount of backlash elimination is fixed, it cannot be automatically compensated and adjusted; and when the main shaft has no backlash elimination and must run at high speed, it is also impossible to eliminate the backlash caused by the pitch error between the transmission gears, so there is no balance drive during turning function of

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