Four-screw drive system for vertical axis of CNC milling and boring machine

Abstract

The four-screw drive system for the vertical axis of the CNC milling and boring machine is characterized in that the vertical section of the column is hollow-shaped, and two sets of screw drive systems are arranged at the front and rear of the column. Span, the vertical four lead screws are in a trapezoidal layout; four guide rails are arranged parallel to each lead screw, two front guide rails are arranged in front of the two inner corners of the column, and the other two rear guide rails are arranged at the rear of the hollow opposite side of the column , the guide rail and the column are fixed with screws, the headstock elevation is connected with the 4 sliders of the guide rail with screws; the upper and lower screw bearing seats are fixed with the columns with screws, and the screw nut is connected with the headstock with screws; the control system is in operation according to the grating scale Feedback, real-time adjustments to the four vertical axis driver units to achieve synchronous control of the motors and independent speed regulation. Realize the synchronous control of the vertical axis and the drive of the center of gravity, and overcome the shortcomings of the vertical axis transmission system such as poor rigidity, poor synchronization, unstable operation, and high failure rate.

Description

technical field [0001] The invention relates to the field of CNC machine tool manufacturing, in particular to a drive mechanism for vertical feed motion of a CNC milling and boring machine. Background technique [0002] The spindle box of the CNC milling and boring machine needs to move up and down in the vertical direction along the column to process the parts. At present, in the transmission structure of the vertical axis of the existing CNC milling and boring machine, a single-screw side-mounted box or a double-screw side-mounted box structure is generally adopted, and the side-mounted box, that is, the spindle box, is installed on one side of the column. At present, the better transmission method is to use double screw screws to hang the transmission box. Such as Figure 5 As shown, the front end of the spindle box 28 adopts the transmission of the leading screw 29, and the rear end adopts the transmission of the hydraulic cylinder transmission 25 and the hydraulic rod ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a four-screw drive system for the vertical axis of a CNC milling and boring machine, which can realize the synchronous control of the vertical axis and drive the center of gravity, and overcome the poor rigidity, poor synchronization, unstable operation, and failure of the vertical axis drive system. Disadvantages such as high rate

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