A Portable Boring and Milling Machine for Processing Large-sized Components

Abstract

The invention relates to a boring-milling machine which comprises a support table, wherein support legs are mounted on the support table and provided with support bolts; the support bolts are connected with a workpiece; a center shaft is arranged on the support table and provided with a center bearing; a rotary table is mounted on the center bearing; a rotary arm is mounted on the rotary table; acutting arm is arranged on the rotary arm; a left support frame and a right support frame are mounted on the cutting arm; the right support frame is connected with a moving unit of a left leveling screw; the lower end of the left leveling screw is connected with a left wheel support frame; a left leveling motor is mounted at the upper end of the left leveling screw; a left drive wheel is mounted on the left wheel support frame; a left drive motor is mounted on the left drive wheel; the right side of the cutting arm is the same with the left side of the cutting arm; a right support frame, a right leveling screw, a right wheel support frame, a right drive wheel, a right leveling motor and a right drive motor are arranged on the right side of the cutting arm in a manner of the right side symmetrical to the left side; the left drive wheel and the right drive wheel are driven by the left drive motor and the right drive motor respectively to walk on the upper surface of the workpiece, so asto drive the cutting arm and the rotary arm to rotate around the center shaft; a machine spindle is mounted on the cutting arm; an x-directional guide rail and an x-directional lead screw are mountedon the bottom surface of the cutting arm to be used to adjust the x-directional feed rate of the machine spindle; a z-directional lead screw is mounted on the machine spindle to be used to adjust thez-directional feed rate of the machine spindle; a drive unit is mounted on the machine spindle; a power unit mounted on the rotary arm drives the machine spindle to rotate through a drive unit; and the machine spindle drives a milling head mounted at the bottom end of the machine spindle to cut the surface of the workpiece.

Description

technical field [0001] The invention relates to a portable on-site boring and milling machine. Background technique [0002] In many heavy industry fields, such as marine engineering, nuclear power, shipbuilding and other fields, there are often situations where some components that need to be machined are large in size or heavy in tonnage, and cannot be processed by indoor fixed lathes. In order to solve the above problems, the An on-site cutting lathe is to install and fix the lathe on the component to be processed, and cut the component outdoors. In the prior art, when performing on-site boring and milling on a component with a large size (often over 6 meters in size), it is often Because the existing on-site boring and milling machine adopts the cantilever structure arrangement, that is, the lathe arm takes the rotation center of the boring and milling machine as the support point and the cutting tool is installed at the end of the lathe arm. Therefore, the larger the si...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a portable boring and milling machine, including a support table, a support leg is provided on the support table, and a support bolt is provided on the support leg, and the support bolt fixes the support table On the workpiece, a central shaft is installed on the support table, a central bearing is arranged on the central shaft, the rotating table is installed on the central bearing, a rotating arm is arranged on the rotating table, and a rotating arm is arranged on the rotating arm. There is a central cover plate, the central cover plate is connected with the rotary table through a central stud and the rotary arm is fixed on the rotary table, the power unit is installed on the rotary arm, and a cutting arm is provided on the rotary arm, and the The cutting arm is provided with a left support frame and a right support frame, the left support frame is provided with a left leveling screw, the right support frame is provided with a right leveling screw, and the left leveling motor and the left adjustment The horizontal screw is connected, the sliding unit of the left leveling screw is fixed on the left support frame, the bottom of the left leveling screw is installed on the left roller bracket, and the left driving wheel is installed on the left roller bracket. The roller bracket is provided with a left driving motor, the left driving wheel is connected with the left driving motor through a transmission device, the right leveling motor is connected with the right leveling screw, and the sliding unit of the right leveling screw is fixed on the right On the support frame, the bottom of the right leveling screw is installed on the right roller bracket, and the right roller bracket is equipped with a right driving wheel, and the right driving wheel is provided with a right driving motor, and the right driving wheel is connected to the right driving wheel through the transmission device. The right driving motor is connected, the left and right driving wheels walk on the surface of the workpiece to be processed, the left and right driving wheels are arranged on the same circular arc with the center of the central axis, and the top of the lathe main shaft is provided with a driving unit, so The drive unit is connected with the power unit, the lathe spindle is provided with an upper clamping plate and a lower clamping frame, one end of the z-direction screw is fixed on the upper clamping plate, and the other end of the z-direction screw is fixed Installed on the lower clamping frame, the upper clamping plate and the lathe spindle are fixed together, the lower clamping frame is fixed on the fixing frame, the fixing frame is installed on the support plate, and the lathe spindle is provided with a main shaft Boss, the inner surface of the lower clamping frame is provided with an inner groove to cooperate with the spindle boss of the lathe spindle, which is convenient for the lathe spindle to play a guiding role when moving along the z direction. The fixed frame is installed on the support plate, and the support There is an x-direction rail on the board, and the guide rail body and the sliding unit of the x-direction rail are respectively fixed on the lower surface of the cutting arm and the upper surface of the support plate, and the x-direction lead screw is installed on the support plate, and the x-direction lead screw The two ends of the two ends of the cutting arm are fixed on the lower surface of the cutting arm, and the movable unit of the x-direction screw is connected with the support plate. The present invention realizes that the driving wheel of the rotating motion of the boring and milling machine and the lathe spindle of the cutting motion are located at the same end of the cutting arm, thereby greatly The length of the cantilever support of the lathe arm is reduced, and at the same time, the driving roller bears most of the self-weight of the boring and milling machine with the support of the workpiece surface, thus solving the problem of insufficient rigidity of the lathe arm caused by the self-weight of the equipment

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