RU2013154338A - DEVICE FOR PROCESSING PARTS ON CNC MILLING MACHINE - Google Patents

Abstract

A device for processing parts on a CNC milling machine containing a cutter with a holder, a dust and chip removal device and a computer, characterized in that it is equipped with a cutting force sensor mounted on the holder, an operational amplifier, a resistor, a switch and a controller, the output of the cutting force sensor connected to the first input of the operational amplifier, the second input of the operational amplifier with a resistor, the input of which is connected to the output of the controller, the input of the controller is connected to the output of the computer, and the output of the operating preamplifier connected to the input of the switch connected to the device to remove dust and chips, while using a computer to determine the cutting force value for milling operations; the surface of the workpiece with a complex contour consisting of two or more sections of different shapes, including the relative movement of the end mill and the workpiece, when machining shaped and intersecting straight sections of the contour, the end mill continuously moves along one common path, which is determined by the equation: where x, y - coordinates in the plane perpendicular to the axis of the cutter, in which the cutter is moved; A = 0.1, B = -1.5 · 10, m = 4, n = 2, and the parameters of the path common for different sections and the diameter of the cutter are set such that they provide processing of the contoured section of the contour, outlined in one or two arcs circles, characterized in that the workpiece is fixed in a rotary-swing two-coordinate table with direct drives, built-in braking devices and absolute rotation sensors for rigid fixation during processing and monitoring the angular position of the plate

Claims (1)

A device for processing parts on a CNC milling machine containing a cutter with a holder, a dust and chip removal device and a computer, characterized in that it is equipped with a cutting force sensor mounted on the holder, an operational amplifier, a resistor, a switch and a controller, the output of the cutting force sensor connected to the first input of the operational amplifier, the second input of the operational amplifier with a resistor, the input of which is connected to the output of the controller, the input of the controller is connected to the output of the computer, and the output of the operating preamplifier connected to the input of the switch connected to the device to remove dust and chips, while using a computer to determine the cutting force value for milling operations; the surface of the workpiece with a complex contour consisting of two or more sections of different shapes, including the relative movement of the end mill and the workpiece, when machining shaped and intersecting straight sections of the contour, the end mill continuously moves along one common path, which is determined by the equation: $$y=A{x}^n+B{x}^m,\left(\mathrm{one}\right)$$

where x, y are the coordinates in the plane perpendicular to the axis of the cutter in which the cutter is moved; A = 0.1, B = -1.5 · 10 ^-4 , m = 4, n = 2, and the parameters of the path common for different sections and the diameter of the cutter are set such that they provide processing of the contoured section of the contour outlined one by one or two arcs of circles, characterized in that the workpiece is fixed in a rotary-swing two-coordinate table with direct drives, built-in braking devices and absolute rotation sensors for rigid fixation during processing and monitoring the angular position of the table plate, consists of a rotary table fixed with the possibility of swinging from itelno horizontal axis perpendicular to the axis of the spindle of the machine via a support shaft mounted in the double row angular roller bearing and the drive shaft mounted in a roller thrust radial bearing, wherein said bearings are installed in the openings of vertical lugs base; and in the rotary table on the radial thrust bearing there is a faceplate rotating relative to the vertical axis, and its rotation is provided by a direct drive with an integrated torque motor consisting of a rotor and a stator, while the rotor is mounted on the drive shaft on a coupling made in the form of an elastically deformable shell, and the control of the angle of rotation of the faceplate and its fixation in a predetermined position is provided by a sensor and a braking device, consisting of a coupling made in the form of an elastically deformable shell, while the coupling This interacts with a sleeve rigidly connected to the faceplate and the hydraulic cylinder cup formed by the cup, cover and piston coaxial to the rotary table housing, and the table is swung around the horizontal axis by a direct drive with a built-in torque motor, a sensor and a brake device similar to the faceplate rotation drive, and the base of the table is rigidly attached to the base of the vertical eyes with a threaded hole made in the central part for interaction with the lead screw, the axis of the aperture is perpendicular to the plane of the drawing, and lies in a plane passing through the vertical axis of the table, while the axis of the hole and the vertical axis of the table are mutually perpendicular and lie in the same plane, and grooves are made in the lower part of the base of the table, perpendicular to the plane of the drawing, for example, a trapezoidal profile, for interaction with the guides of the machine drill-milling-boring group when performing multi-coordinate machining of parts with the required accuracy.