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Control model This set of piston shaped pin hole CNC boring system adopts digital technology control. The industrial control computer sends out control signals (number of pulses) to drive the AC servo motor to drive the ball screw to drive, thus pushing the bevel slider on the linear guide. The front and rear sliding occurs to cause deformation of the deformable section of the flexible joint, so as to achieve a slight displacement of the mast in the radial direction and to machine the required piston shaped pin hole.
The position detection signal generated by the sensor is sent back to the industrial control computer. After the industrial control computer judges the actual position of the boring tool in the boring process, the control signal is sent to the AC servo motor to determine whether the AC servo motor needs to continue working. . The micro-feed device designed by the micro-feed device discards the basic idea of ​​the piezoelectric element, the magnetostrictive rod, etc., which are deformed after being controlled, so that the micro-displacement of the mast along the radial direction of the pin hole is obtained, but from the mechanical From the perspective of the transmission, a new mechanical micro-feed device is designed. The micro-feed device flexible joint bevel slider sleeve. The micro-feed device uses a bevel slider with a 1:100 taper in a straight line. The rail slides back and forth to cause the flexible joint to deform, and the mast will deviate from the axial direction by a slight angle, resulting in a slight displacement in the radial direction of the piston pin bore. The slide rail of the linear guide rail is mounted on the inclined surface slider, the slider of the linear guide rail is mounted on the flexible joint, the fixed end of the flexible joint is fixed on the hollow spindle of the machine tool, the hollow spindle of the random bed rotates, and the mast is fixed in the flexible shaft The deformable end of the joint. The other end of the ramp slider is fixed to a sleeve by a rolling bearing, and the sleeve is fixed to the nut of the ball screw. The sleeve is fixed to the machine bed by a linear bearing and can only be fed back and forth with the rotation of the ball screw. In addition, a linear bearing can be installed in the middle of the inclined slider, the linear bearing is fixed on the hollow spindle of the machine tool, and the hollow spindle of the random bed rotates to increase the stability during the transmission process.
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