JP2009023038A - Working method for tool rest rotary type working machine, and control unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carry-in type tool rest rotary type working machine for performing highly accurate work for an inner circumferential face and an end face while avoiding the degradation of working accuracy due to an eccentric error, without depending on set-up adjustment with a side jack or a leveling device. <P>SOLUTION: In working the inner circumferential face, an eccentric compensation control means 123 corrects the horizontal axial position of a sliding beam 31 corresponding to the rotating angle position of a turntable 21 for eccentric compensation on the basis of the center point of a workpiece to cancel an eccentric error due to an eccentric amount computed by an eccentric amount computing means 122. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a processing method and a control unit of a tool post rotating type processing machine, and more particularly to a processing method and a control unit of a tool post rotating type processing machine that performs cutting of an inner circumferential surface and an end face of a large-sized workpiece. It is.

  Cutting of the inner circumferential surface (cylindrical inner circumferential surface, tapered inner circumferential surface, etc.) and end surface (annular flange surface, square flange surface, annular end surface) of large workpieces is performed with a portal-type vertical lathe. It is common (for example, patent document 1).

In cutting with a vertical lathe, the work piece is placed on a rotary table, the work piece is rotated by the rotary table, and the cross rail that forms a gate shape with the columns on both sides in the Y-axis direction (the horizontal diameter of the rotary table). The turning head provided so that the axis can be moved in the Y direction is moved in the Y axis, and the ram provided in the turning head and the tool post attached to the lower end of the ram are moved in the Z axis direction (up and down). Then, the inner circumferential surface and the end surface of the workpiece on the rotary table are cut with a tool such as a tool attached to the tool post.
Japanese Patent Publication No. 1-56364

  In cutting with a vertical lathe, as a matter of course, the gate width, maximum machining diameter, gate height, and maximum machining height of the vertical lathe must not be larger than the outer diameter and overall height of the workpiece. For this reason, a large vertical lathe is required according to the size of the workpiece, and a large space is always required for machine installation. Considering that large vertical lathes are expensive and in many cases, there is not always machining of large workpieces, large vertical lathes can be said to be equipment with poor cost performance and space efficiency.

  On the other hand, a rotating table is rotatably provided on the base, a slide beam is provided on the rotating table so as to be movable in the horizontal axis direction, and a tool post base fixedly attached to the end of the slide beam is provided. Using a tool post rotary processing machine having a movable tool post movable in the vertical axis direction with respect to the tool post base, the tool post rotary processing machine (the entire apparatus) is centered on the workpiece using a crane or the like. Installed at the position, attached the tool to the movable turret, rotationally driven the rotary table, moved the slide beam in the horizontal axis direction to perform cutting feed, and given the axial feed by moving the movable turret in the vertical axis direction The inner circumferential surface of the workpiece is cut, or the movable tool post is moved in the vertical axis direction to perform infeed feeding, and the radial feed is given by the horizontal axis movement of the slide beam to give the end of the workpiece. It is cut has been proposed by the present applicant the same applicant and (Japanese Patent Application No. 2006-148684).

  In the cutting process of the inner circumferential surface and end face by such a carry-in tool post rotary type processing machine, an expensive large processing machine and a large surface are not required, and a cylindrical surface and end face of a large work piece are cut. There is an advantage that it can be performed efficiently with high cost performance in a space efficient manner.

  However, in the carry-in tool post rotary processing machine, the rotation center point (rotation center point of the rotary base) of the tool post rotary processing machine carried in at the center position of the workpiece is not necessarily the center of the workpiece. It does not coincide with the point, and an eccentric error occurs in the inner circumferential surface machining. In addition, since the installation surface of the tool post rotary processing machine is not always in good condition, the vertical axis of the tool post rotary processing machine does not match the vertical axis of the work piece and is inclined with respect to the vertical axis of the work piece. Thus, a tool post rotating type processing machine is installed, and an inclination error of the central axis is caused in the inner circumferential surface machining. This means that in end face machining, the horizontal axis of the tool post rotary type machine is not parallel to the horizontal end face of the work piece, resulting in a tilt error.

  This is the case when a large, divided work piece is roughly processed with a finishing allowance in advance, and finishing is carried out after assembly with the above-mentioned carry-in tool post rotary processing machine, This is particularly a problem when the refinishing process is performed with the above-described carry-in tool post rotary type processing machine.

  In contrast to this, it is possible to adjust the centering and tilt by moving the tool post rotary type processing machine with a side jack or level adjusting device arranged at the installation base of the tool post rotary type processing machine. However, due to the fact that the vibration / tilt detection working part is separated from the adjustment working part by the side jack or level adjusting device, and the tool post rotary processing machine is small, it has a weight of tens of tons. However, the tilt adjustment work is not easy, it has a high-precision mind, and it takes a lot of work time to perform the tilt adjustment. In addition, complete centering and tilt adjustment are difficult to perform in practice, and there are not a few eccentricity errors and tilt errors (end surface tilt errors). Machining accuracy with a carry-in tool post rotating machine Cause problems.

  The problem to be solved by the present invention is a reduction in machining accuracy due to an eccentric error, an inclination error, and an end face inclination error in a loadable tool post rotating type processing machine without depending on installation adjustment by a side jack or a level adjusting device. Is to enable highly accurate inner circumferential surface processing and end surface processing.

  In the machining method using the tool post rotating type processing machine according to the present invention, a rotating table is rotatably provided on a base, and a slide beam is provided on the rotating table so as to be movable in a horizontal axis direction. A method of processing using a tool post rotating type processing machine having a tool post base fixedly attached to an end of the tool post and a movable tool post movable in a vertical axis direction with respect to the tool post base. A processing machine carrying-in process in which a mold processing machine is carried in and placed at the center position of the workpiece; a dimension measuring device is attached to the movable tool post; the turntable is rotated; and at each of a plurality of rotation positions of the turntable A rotational position corresponding radial distance measuring step of measuring a radial distance between a rotation center point of the turntable and an inner circumferential surface of the workpiece by the dimension measuring instrument, and a rotational position corresponding radial distance measuring step. Measure An eccentricity calculation step of calculating an eccentricity amount of the rotation center point of the turntable with respect to a center point of the workpiece from a measured value, a tool is attached to the movable tool post, the turntable is driven to rotate, and the slide beam An inner circumferential surface machining step of machining the inner circumferential surface of the workpiece by moving the workpiece in the horizontal axis direction to perform infeed feeding and applying axial feeding by moving the movable tool rest in the vertical axial direction. In the inner circumferential surface machining step, the horizontal axis of the slide beam according to the rotation angle position of the turntable is canceled so that the eccentricity error due to the eccentricity calculated in the eccentricity calculation step is canceled. The direction position is corrected, and eccentricity compensation is performed based on the center point of the workpiece.

  In the machining method using the tool post rotating type processing machine according to the present invention, a rotating table is rotatably provided on a base, and a slide beam is provided on the rotating table so as to be movable in a horizontal axis direction. A method of processing using a tool post rotating type processing machine having a tool post base fixedly attached to an end of the tool post and a movable tool post movable in a vertical axis direction with respect to the tool post base. A processing machine loading step for loading and installing a mold processing machine at the center position of the workpiece, a dimension measuring device is attached to the movable tool post, and the movable tool post is moved in the vertical axis direction at a predetermined rotation position of the rotary table. A radial distance measuring step corresponding to a vertical axis position that measures a radial distance between a rotation center point of the turntable and an inner circumferential surface of the workpiece by the dimension measuring device at each of a plurality of vertical axis positions; ,in front A tilt angle calculating step for calculating a tilt angle of the rotation center axis of the rotary table with respect to the vertical axis of the workpiece from a measurement value measured in a radial distance measuring step corresponding to a vertical axis position, and attaching a tool to the movable tool post The rotary table is driven to rotate, the slide beam is moved in the horizontal axis direction to perform cutting feed, and the axial direction feed is given by the vertical axis direction movement of the movable tool post to provide an inner circumferential surface of the workpiece. An inner circumferential surface machining step, and in the inner circumferential surface machining step, the tilt error due to the tilt angle calculated in the tilt angle calculation step is canceled. The position of the slide beam in the horizontal axis direction is corrected according to the rotation angle position, and tilt compensation is performed with respect to the vertical axis of the workpiece.

In the machining method using the tool post rotating type processing machine according to the present invention, a rotating table is rotatably provided on a base, and a slide beam is provided on the rotating table so as to be movable in a horizontal axis direction. A method of processing using a tool post rotating type processing machine having a tool post base fixedly attached to an end of the tool post and a movable tool post movable in a vertical axis direction with respect to the tool post base. A processing machine carrying-in step for carrying in and installing a mold processing machine at the center position of the workpiece, a dimension measuring device attached to the movable tool post, rotating the turntable, and a plurality of rotation positions of the turntable A rotational position corresponding radial distance measuring step of measuring a radial distance between a rotation center point of the rotary table and an inner circumferential surface of the workpiece by the dimension measuring instrument, and the rotational position corresponding radial distance Depending on the measurement process An eccentric amount calculation step for calculating an eccentric amount of the rotation center point of the turntable with respect to the center point of the workpiece from the measured value, and a dimension measuring device is attached to the movable tool post, and a predetermined rotation position of the turntable The movable tool rest is moved in the vertical axis direction, and the radial distance between the rotation center point of the turntable and the inner circumferential surface of the workpiece is measured by the dimension measuring device at each of a plurality of vertical axis positions. The tilt angle of the rotation center axis of the turntable with respect to the vertical axis of the workpiece is calculated from the measurement value measured by the vertical distance measurement step corresponding to the vertical axis position to be measured and the radial distance measurement step corresponding to the vertical axis position. A tilt angle calculation step, a tool is attached to the movable tool post, the rotary table is driven to rotate, the slide beam is moved in a horizontal axis direction to perform cutting feed, and the movable An inner circumferential surface machining step for machining an inner circumferential surface of the workpiece by giving an axial feed by moving a workpiece in the vertical axial direction, and calculating the amount of eccentricity in the inner circumferential surface machining step In accordance with the rotation angle position of the turntable, both the eccentricity error due to the eccentricity calculated in the step and the inclination error due to the inclination angle calculated in the inclination angle calculation step are canceled. The position of the slide beam in the horizontal axis direction is corrected, and cylindrical surface eccentricity-tilt compensation is performed with reference to the center point of the workpiece and the vertical axis of the workpiece.

  In the machining method using the tool post rotating type processing machine according to the present invention, a rotating table is rotatably provided on a base, and a slide beam is provided on the rotating table so as to be movable in a horizontal axis direction. A method of processing using a tool post rotating type processing machine having a tool post base fixedly attached to an end of the tool post and a movable tool post movable in a vertical axis direction with respect to the tool post base. A processing machine carrying-in step of carrying in and installing the mold processing machine at the center position of the workpiece, and attaching a dimension measuring device to the movable tool post, moving the slide beam in the horizontal axis direction at a predetermined rotational position of the turntable, A vertical distance measuring step of measuring a vertical distance between a predetermined vertical axis position of the movable tool rest and a horizontal end surface of the workpiece by the dimension measuring instrument at each of a plurality of horizontal axis direction positions; An end surface inclination angle calculation step for calculating an end surface inclination angle in the horizontal axis direction of the slide beam with respect to a horizontal end surface of the workpiece from a measurement value measured by the direct distance measurement step, a tool is attached to the movable tool post, and the rotation End face machining that drives the table to rotate, moves the movable tool rest in the vertical axis direction to perform cutting feed, and gives the radial feed by moving the slide beam in the horizontal axis direction to machine the horizontal end face of the workpiece. And in the end face machining step, the movable according to the rotation angle position of the turntable so that the end face inclination error due to the end face inclination angle calculated in the end face inclination angle calculation step is canceled. The vertical axis position of the tool post is corrected, and end face tilt compensation is performed with respect to the horizontal end face of the workpiece.

  The control unit of the tool post rotating type processing machine according to the present invention includes a rotating table rotatably provided on a base, a slide beam provided on the rotating table to be movable in a horizontal axis direction, and an end of the slide beam. A turret base fixedly mounted on the part and a movable turret movable in the direction of the vertical axis with respect to the turret base, and the entire apparatus is loaded and installed at the center position of the work piece. A tool is attached, the rotary table is driven to rotate, the slide beam is moved in the horizontal axis direction to perform cutting feed, and the axial movement is given by the vertical axis direction movement of the movable tool post to give the workpiece A control unit for a tool post rotating type processing machine for processing an inner circumferential surface, wherein a rotation center point of the rotating table at a plurality of rotation angle positions of the rotating table and an inner circumferential surface of the workpiece Radial direction In the machining of the inner circumferential surface of the workpiece, an eccentricity calculation means for inputting a measured value of separation and calculating the eccentric amount of the rotation center point of the turntable with respect to the center point of the workpiece from the measurement value The position of the slide beam in the horizontal axis direction is corrected in accordance with the rotation angle position of the rotary table so that the eccentricity error due to the eccentricity calculated by the eccentricity calculating means is canceled, and the workpiece And an eccentricity compensation control means for performing eccentricity compensation with reference to the center point.

  The control unit of the tool post rotating type processing machine according to the present invention includes a rotating table rotatably provided on a base, a slide beam provided on the rotating table to be movable in a horizontal axis direction, and an end of the slide beam. A turret base fixedly mounted on the part and a movable turret movable in the direction of the vertical axis with respect to the turret base, and the entire apparatus is loaded and installed at the center position of the work piece. A tool is attached, the rotary table is driven to rotate, the slide beam is moved in the horizontal axis direction to perform cutting feed, and the axial movement is given by the vertical axis direction movement of the movable tool post to give the workpiece A control unit for a tool post rotating type processing machine for processing an inner circumferential surface, wherein a rotation center point of the turntable at a plurality of vertical axis positions of a predetermined rotation position of the turntable and an inside of the workpiece An inclination angle calculating means for inputting a measurement value of a radial distance to the peripheral surface, calculating an inclination angle of a rotation center axis of the turntable with respect to a vertical axis of the workpiece from the measurement value, In the inner circumferential surface machining, the horizontal axis direction position of the slide beam is corrected according to the rotation angle position of the turntable so that the tilt error due to the tilt angle calculated by the tilt angle calculation means is canceled. And tilt compensation control means for performing tilt compensation with reference to the vertical axis of the workpiece.

  The control unit of the tool post rotating type processing machine according to the present invention includes a rotating table rotatably provided on a base, a slide beam provided on the rotating table to be movable in a horizontal axis direction, and an end of the slide beam. A turret base fixedly mounted on the part and a movable turret movable in the direction of the vertical axis with respect to the turret base, and the entire apparatus is loaded and installed at the center position of the work piece. A tool is attached, the rotary table is driven to rotate, the slide beam is moved in the horizontal axis direction to perform cutting feed, and the axial movement is given by the vertical axis direction movement of the movable tool post to give the workpiece A control unit for a tool post rotating type processing machine for processing an inner circumferential surface, wherein a rotation center point of the rotating table at a plurality of rotation angle positions of the rotating table and an inner circumferential surface of the workpiece Radial direction An eccentricity calculation means for inputting a measurement value of separation and calculating an eccentricity amount of the rotation center point of the turntable with respect to the center point of the workpiece from the measurement value, and a plurality of predetermined rotation positions of the turntable The measurement value of the radial distance between the rotation center point of the turntable at the vertical axis position and the inner circumferential surface of the workpiece is input, and the rotation of the turntable with respect to the vertical axis of the workpiece is input from the measurement value. In an inclination angle calculating means for calculating an inclination angle of a central axis, and in an inner circumferential surface machining step of the workpiece, the eccentricity error due to the eccentricity calculated by the eccentricity calculating means is canceled. Eccentricity compensation control means for correcting the position of the slide beam in the horizontal axis direction according to the rotational angle position of the turntable and performing eccentricity compensation with reference to the center point of the workpiece, and the inner circumference of the workpiece In surface processing, The horizontal axis direction position of the slide beam is corrected according to the rotation angle position of the turntable so that the tilt error due to the tilt angle calculated by the tilt angle calculation means is canceled, and the vertical direction of the workpiece is corrected. Inclination compensation control means for performing inclination compensation with respect to the axis.

  The control unit of the tool post rotating type processing machine according to the present invention includes a rotating table rotatably provided on a base, a slide beam provided on the rotating table to be movable in a horizontal axis direction, and an end of the slide beam. A turret base fixedly mounted on the part and a movable turret movable in the direction of the vertical axis with respect to the turret base, and the entire apparatus is loaded and installed at the center position of the work piece. A tool is attached, the rotary table is driven to rotate, the movable tool post is moved in the vertical axis direction to perform cutting feed, and the slide beam is moved in the horizontal axis direction to give a radial feed so that the workpiece A control unit for a tool post rotating type processing machine for processing a horizontal end face, wherein a predetermined vertical axis position of the movable tool rest at a plurality of horizontal axial positions of a predetermined rotation position of the turn base and a subject to be added Input a measured value of a vertical distance from the horizontal end surface of the workpiece, and calculate an end surface tilt angle calculating means for calculating an end surface tilt angle of the slide beam in the horizontal axis direction relative to the horizontal end surface of the workpiece from the measured value; In the end face processing of the workpiece, the vertical axis position of the movable tool rest according to the rotation angle position of the turntable so that the end face tilt error due to the end face tilt angle calculated by the end face tilt angle calculating means is cancelled. And end face inclination compensation control means for performing end face inclination compensation with reference to the horizontal end face of the workpiece.

  In the processing method and control unit of the tool rest rotary processing machine according to the present invention, in the inner circumferential surface machining, the turntable is canceled so that the eccentricity error due to the eccentricity calculated based on the measured value of the radial distance is canceled. The position of the slide beam in the horizontal axis direction is corrected according to the rotation angle position of the workpiece, and eccentricity compensation is performed with reference to the center point of the workpiece. Even if it is insufficient, the machining accuracy is not lowered by the eccentric error in the inner circumferential surface machining, and the inner circumferential surface machining with high accuracy is performed.

  In addition, in the inner circumferential surface machining, the horizontal axis direction position of the slide beam is set according to the rotation angle position of the turntable so that the tilt error due to the tilt angle calculated based on the measured value of the radial distance is canceled. Correction and tilt compensation based on the vertical axis of the work piece are performed, so even if vertical parallel alignment between the tool rest rotary machine and the work piece is insufficient, machining accuracy is reduced due to the tilt error. There is no, and highly accurate inner circumferential surface machining is performed.

  In the end face machining, the vertical axis position of the movable tool rest is corrected according to the rotation angle position of the turntable so that the end face tilt error due to the end face tilt angle calculated based on the measured value of the radial distance is canceled. Since end face tilt compensation is performed with respect to the horizontal end face of the work piece, even if the tool post rotation processing machine and the work piece are not sufficiently leveled, machining accuracy is reduced due to end face tilt error. High-accuracy end face processing is performed.

  First, one embodiment of a tool post rotary processing machine to which a processing method and a control device according to the present invention are applied will be described with reference to FIGS.

  The tool post rotating type processing machine of this embodiment is indicated by reference numeral 1 as a whole. The tool post rotating type processing machine 1 includes, as a basic configuration, a cylindrical base 11, a substantially disk-shaped rotary base 21 provided on the base 11 so as to be rotatable (C-axis rotation), and a rotary base 21. The slide beam 31 is movably provided in the horizontal direction (X-axis direction), the tool base 41 is detachably fixed to the end of the slide beam 31, and the vertical axis direction (Z And a movable tool rest 51 movably provided in the axial direction. A suspension boss 14 for lifting the entire machine with a crane or the like is attached to the base 11.

  The rotation guide of the turntable 21 is performed by a turning guide bearing 12 attached to the base 11 and the turntable 21.

  An annular external ring gear 13 is fixedly mounted on the base 11 concentrically with the rotation guide of the turntable 21 described above. The turntable 21 is provided with a pinion 23 meshed with the external ring gear 13 and a C-axis servomotor 24 that rotates the pinion 23 as rotation drive means for rotating the turntable 21 with respect to the base 11. It has been. When the pinion 23 is rotationally driven by the C-axis servomotor 24, the rotary base 21 is rotationally driven with respect to the base 11.

  Although not shown, the C-axis servomotor and the pinion 23 are drive-coupled with a required reduction ratio by a reduction gear train. A C-axis rotary encoder 22 that is an absolute rotary encoder that detects the rotational position of the C-axis servomotor 24 is attached to one gear shaft of the reduction gear train.

  As a linear guide for guiding the horizontal movement of the slide beam 31, two parallel linear guide rails 33 extending across the rotary table 21 in the radial direction (X-axis direction) are provided on the bottom surface of the slide beam 31. It is fixedly attached.

  A linear guide member (not shown) that engages with the linear guide rail 33 is attached to the upper surface of the rotary table 21, and the slide beam 31 is guided by the linear guide rail 33 by this engagement to the rotary table 21. Moves in the X-axis direction.

  The turntable 21 rotatably supports both ends of the X-axis feed screw 25 by bearing portions 26. The X-axis feed screw 25 extends substantially across the center of the turntable 21 in the radial direction (X-axis direction). The X-axis feed screw 25 is threadedly engaged with a feed nut 32 that is fixedly attached to the bottom surface of the slide beam 31.

  The X-axis feed screw 25 is drivingly connected to an X-axis servo motor 28 mounted on the turntable 21 by a coupling 27. Connected to the X-axis servomotor 28 is an X-axis rotary encoder 29 that is an absolute rotary encoder for detecting the X-axis position (detecting the rotational position of the X-axis servomotor 28).

  When the X-axis feed screw 25 is rotationally driven by the X-axis servomotor 28, the slide beam 31 is driven to move back and forth in the horizontal direction (X-axis drive) with respect to the turntable 21.

  The slide beam 31 has a beam length substantially equal to the diameter of the turntable 21. As a result, in the state where the slide beam 31 is at the X-axis movement home position (the last retracted position), almost the entire slide beam 31 is placed on the turntable 21 as shown in FIG. It will be compact. Accordingly, it is possible to deal with a workpiece having a small inner circumferential diameter, and the processing machine can be easily conveyed.

  Two linear guide rails 52 parallel to the vertical direction are fixedly mounted on the back surface of the movable tool rest 51. A linear guide member 42 that engages with the linear guide rail 52 is attached to the front surface of the tool post base 41, and the movable tool post 51 is guided by the linear guide rail 52 by this engagement to the tool post base 41. Axis moves in the Z-axis direction (vertical direction).

  The tool post base 41 rotatably supports the upper and lower ends of the Z-axis feed screw 43 by bearings 44. The Z-axis feed screw 43 is engaged with a feed nut 53 fixedly mounted on the back surface of the movable tool rest 51.

  The Z-axis feed screw 43 is drivably coupled to a Z-axis servo motor 45 built in the tool post base 41 via a reduction gear train 46. The Z-axis servo motor 45 is connected to a Z-axis rotary encoder 47 that is an absolute rotary encoder for detecting the Z-axis position (detecting the rotational position of the Z-axis servo motor 45).

  When the Z-axis feed screw 43 is rotationally driven by the Z-axis servomotor 45, the movable tool rest 51 is driven up and down (Z-axis drive) with respect to the tool rest base 41.

  The turret base 41 and the movable turret 51 are handled as a turret unit 61 that is an assembly.

  The movable tool rest 51 has a tool mounting portion 54 on the front surface portion. The tool mounting portion 54 receives a tool shank portion such as a bite tool 57 and fixes the shank receiving portion 55 that is fixed by fastening bolts (not shown) at a predetermined interval in the vertical direction (a pitch shorter than the moving stroke of the movable tool rest 51). And have multiple.

  A control unit 71 is mounted on the slide beam 31. The control unit 71 includes a power control device such as a drive unit of servo motors 24, 28, and 45 for each axis, a microcomputer control device such as a numerical controller (CNC), a programmable controller (PLC), and the like. The servo motor 24, the X-axis servo motor 28, and the Z-axis servo motor 45 are controlled.

  As shown in FIG. 4, the control unit 71 includes a position control unit (axis control unit) 121. The position control unit 121 receives position information from each of the rotary encoders 22, 29, 47 for each axis, and receives a position command for the C-axis servomotor 24, a position command for the X-axis servomotor 28, and a Z-axis servomotor 45. Position control is performed, and the position control of the C-axis position of the turntable 21, the X-axis position of the slide beam 31, and the Z-axis position of the movable tool rest 51 is performed.

  A slip ring device 72 for power supply is provided between the base 11 and the turntable 21. The slip ring device 72 for power supply supplies power from the base 11 side (fixed side) to the turntable 21 side (rotation side). Thereby, even if the turntable 21 is rotating, power is supplied to all electric devices on the rotating side such as the C-axis servomotor 24, the X-axis servomotor 28, the Z-axis servomotor 45, the control unit 71, and the like. Done.

  An on-board operation panel (console) 73 is disposed on the slide beam 31 as an operation panel of the control unit 71. Since the control unit 71 including the on-board operation panel 73 is disposed on the slide beam 31 (rotation side), the power cable and signal cable of the control unit 71 need only be on the rotation side. It is not necessary to provide a slip ring device for each signal cable.

  Since the on-board operation panel 73 is provided on the slide beam 31, an operator's operation scaffold 74 having a protective fence 75 is disposed on the slide beam 31.

  As another operation panel (console) of the control unit 71, a wireless communication type on-floor operation panel 76 is provided on an on-floor operation table 80 arranged on the floor. The control unit 71 and the on-floor operation panel 76 are provided with a wireless communication device (not shown) capable of two-way wireless communication. For this wireless communication, both the control unit 71 and the on-floor operation table 80 are wireless. Communication antennas 77 and 78 are attached.

  In the case of a hollow work piece such as a center part of a large-sized work piece W fixedly arranged using a crane or the like, a cylindrical work piece, etc., the tool post rotary type processing machine 1 is carried into the inner space of the center part. In the cutting of the cylindrical inner peripheral surface Wb of the workpiece W, the bite tool 57 is fixedly attached to one selected shank receiving portion 55 of the tool attachment portion 54 of the movable tool rest 51.

  The turntable 21 is rotated by the C-axis servomotor 24. Thereby, the cutting tool 57 of the movable tool rest 51 rotates around the rotation center of the turntable 21, and the rotation radius (processing diameter) is the horizontal movement amount of the slide beam 31 with respect to the turntable 21, that is, the X-axis position. The cutting feed is performed by the X-axis movement of the slide beam 31 by the X-axis servomotor 28. Then, by the Z-axis movement of the movable tool rest 51 by the Z-axis servo motor 45, cutting feed in the axial direction (bus line direction) with respect to the machining surface (cylindrical inner peripheral surface Wb) is performed.

  In the cutting of the tapered inner peripheral surface (conical inner peripheral surface), the rotation radius (processing diameter) determined by the X-axis position of the slide beam 31 is changed according to the Z-axis position.

  In cutting the flange surface Wa of the workpiece W, the upward flange surface machining adapter 111 is attached to the upper end surface of the movable tool rest 51, and the bite tool 57 is attached to the bite tool attachment portion 114 of the adapter 111.

  The turntable 21 is rotated by the C-axis servomotor 24. As a result, the bite tool 57 of the movable tool rest 51 rotates around the rotation center of the turntable 21, and cutting feed is performed by the Z-axis movement of the movable tool rest 51 by the Z-axis servo motor 45. Then, the X-axis servomotor 28 moves the slide beam 31 in the X-axis to perform cutting feed in the radial direction with respect to the processing surface (flange surface Wa).

  In the inner circumferential surface cutting of the cylindrical inner circumferential surface Wb of the workpiece W described above, as shown in FIG. 5, the rotation center point of the tool post rotating type processing machine 1 (rotation center point of the rotating table). If Cm does not coincide with the center point Cw of the workpiece W, the cutting tool 57 of the movable tool rest 51 draws a rotation locus indicated by the symbol t, resulting in an eccentric error δX. Further, as shown in FIG. 6, the vertical axis Azm of the tool rest rotary processing machine 1 does not coincide with the vertical axis Azw of the workpiece W and has an inclination with respect to the vertical axis Azw of the workpiece W. When the turret rotary processing machine 1 is installed, a tilt error δθv of the central axis occurs in the inner circumferential surface cutting.

  In the end face cutting of the flange surface Wa of the workpiece W described above, the vertical axis Azm of the tool post rotary processing machine 1 does not match the vertical axis Azw of the workpiece W as shown in FIG. When the tool post rotary processing machine 1 is installed with an inclination with respect to the vertical axis Azw of the workpiece W, the horizontal axis Axm of the tool post rotary processing machine 1 is set to the horizontal end face (flange surface Wa of the workpiece W). ) And a tilt error δθh is generated.

  If the inclination of the vertical axis Azm of the tool post rotary processing machine 1 with respect to the vertical axis Azw of the workpiece W is the same in the inner circumferential surface cutting and the end surface cutting, an inclination error δθv and an inclination error δθh are obtained. Are correlated.

  In order to avoid a reduction in machining accuracy due to the above-described eccentricity error and inclination error (end surface inclination error) without depending on the carry-in installation accuracy of the tool post rotating processing machine 1, the control device according to the present invention is shown in FIG. As shown in FIG. 4, the control unit 71 includes an eccentricity calculation means 122, an eccentricity compensation control means 123, an inclination angle calculation means 124, an inclination compensation control means 125, an end face inclination angle calculation means 126, and an end face. Inclination compensation control means 127 is provided.

  The eccentricity calculation means 122 is a measurement value of the radial distance between the rotation center point Cm of the turntable 21 and the inner circumferential surface (cylindrical inner circumferential surface Wb) of the workpiece W at a plurality of rotation positions of the turntable 21. (Amount of change in the radial distance around the C axis) is input, and the eccentric amount of the rotation center point Cm of the turntable 21 with respect to the center point Cw of the workpiece W is calculated from the measured value. The amount of eccentricity includes vector information indicating the absolute amount of eccentricity and the direction of eccentricity.

  The radial distance measurement corresponding to the actual rotational position is performed by using the radial distance between the rotation center point Cm of the turntable 21 and the inner circumferential surface of the workpiece W at a predetermined rotational position as a reference value. What is necessary is just to measure the amount of change in the radial distance between the rotation center point Cm of the turntable 21 and the inner circumferential surface of the workpiece W. The measured value of the radial distance is the amount of change around the C axis of the radial distance. It may be.

  The eccentricity compensation control means 123 is detected by the C-axis rotary encoder 22 so that the eccentricity error due to the eccentricity calculated by the eccentricity calculation means 122 is canceled in the inner circumferential surface machining of the workpiece W. According to the rotational angle position (C-axis position) of the turntable 21, the X-axis servo motor 28 controls the position of the slide beam 31 in the X-axis direction by the position control by the X-axis servomotor 28, and the X-axis position (horizontal axis direction position) of the slide beam 31 Correction is performed, and eccentricity compensation based on the center point Cw of the workpiece W is performed.

  As a result, the bite tool 57 of the movable tool rest 51 draws a circle around the center point Cw of the workpiece W in the C-axis rotation of the turntable 21 in the inner circumferential surface machining, and the machining accuracy due to the eccentric error is increased. Reduction is avoided.

  The tilt angle calculation means 124 includes a rotation center point Cm of the turntable 21 at a plurality of vertical axis positions at a predetermined rotation position of the turntable 21, an inner circumferential surface (cylindrical inner circumferential surface Wb) of the workpiece W, and the like. The measured value of the radial distance (the amount of change in the radial distance in the vertical axis direction) is input, and the inclination of the rotation center axis (vertical axis Azm) of the turntable 21 relative to the vertical axis Azw of the workpiece W from the measured value Calculate the angle. This inclination angle includes vector information indicating the absolute amount of the inclination angle and the direction of the inclination.

  The radial distance measurement corresponding to the actual vertical axis position is based on the radial distance between the rotation center point Cm of the turntable 21 and the inner circumferential surface of the workpiece W at a predetermined vertical axis position of the workpiece W. The amount of change in the radial distance between the rotation center point Cm of the turntable 21 and the inner circumferential surface of the workpiece W at other vertical axis positions may be measured, and the measured value of the radial distance is measured in the vertical axis direction. It may be the amount of change in the radial distance.

  The inclination compensation control means 125 is the rotation detected by the C-axis rotary encoder 22 so that the inclination error due to the inclination angle calculated by the inclination angle calculation means 124 is canceled in the inner circumferential surface machining of the workpiece W. The X-axis position (horizontal axis direction position) of the slide beam 31 is corrected by moving the slide beam 31 in and out of the X-axis direction by position control by the X-axis servomotor 28 according to the rotation angle position of the table 21, Inclination compensation is performed using the vertical axis Azw of W as a reference.

  Thereby, the bit tool 57 of the movable tool rest 51 moves in parallel with the vertical axis Azw of the workpiece W in the Z-axis movement of the movable tool rest 51 in the inner circumferential surface machining, and the machining accuracy is reduced due to the tilt error. Is avoided.

  The end surface oblique angle calculating means 126 is configured such that the predetermined vertical axis position of the movable tool rest 51 and the horizontal end surface (flange surface Wa) of the workpiece W at a plurality of horizontal axis direction positions at the predetermined rotation position of the turntable 21. A measurement value of vertical distance (amount of change in vertical distance in the horizontal direction) is input, and an inclination angle in the horizontal axis direction (X-axis direction) of the slide beam 31 with respect to the horizontal end surface of the workpiece W is calculated from the measurement value. . This inclination angle includes vector information indicating the absolute amount of the inclination angle and the inclination direction.

  The actual vertical distance measurement value is obtained by using the vertical distance between the predetermined vertical axis position of the movable tool rest 51 and the horizontal end surface of the workpiece W at a predetermined rotational position of the workpiece W as a reference value, and the other vertical axis positions. The amount of change in the vertical distance between the predetermined vertical axis position of the movable tool rest 51 and the horizontal end surface of the workpiece W may be measured, and the measured value of the vertical distance is the amount of change in the vertical distance in the horizontal direction. Good.

  The end surface tilt compensation control means 127 is a turntable detected by the C-axis rotary encoder 22 so that the tilt error due to the tilt angle calculated by the end surface tilt angle calculation means 126 is canceled in the end surface processing of the workpiece W. In accordance with the rotational angle position of 21, the movable tool rest 51 is moved up and down in the Z-axis direction by position control by the Z-axis servo motor 45 to correct the Z-axis position (vertical axis position) of the movable tool rest 51 and to be processed. End surface inclination compensation with reference to the horizontal end surface of the object W is performed.

  As a result, the cutting tool 57 of the movable tool rest 51 moves the slide beam 31 in the end surface processing in parallel with the horizontal end surface (flange surface Wa) of the workpiece W in the X-axis movement, and the processing accuracy decreases due to the end surface tilt error. Is avoided.

  Below, the procedure (process) of the inner periphery surface processing of the workpiece W by the tool rest rotary type processing machine 1 is demonstrated.

  (1) As a processing machine carrying-in process, the tool post rotating type processing machine 1 is carried in and installed at the center position of the workpiece W. Prior to the loading of the turret rotary processing machine 1, rough centering such as roller scale measurement is performed so that the center of the base plate 102 is positioned at the center position of the workpiece W. The level adjustment is performed so that the upper surface of the base plate 102 is substantially parallel to the flange surface Wa of the workpiece W by using a plurality of leveling blocks 101. The installation work of the base plate 102 is performed in a state in which the tool post rotary processing machine has not yet been carried in, and thus is easily performed in a wide work space.

  Thereafter, the turret rotary processing machine 1 is placed on the base plate 102 using a crane or the like, and the radial position of the base 11 of the turret rotary processing machine 1 is adjusted and rotated by a plurality of side jacks 103. Positioning is performed so that the rotation center point Cm of the table 21 substantially matches the center point Cw of the workpiece W.

  (2) As a rotational distance corresponding radial direction measuring step, a dimension measuring instrument (not shown) is attached to the movable tool rest 51, and the dimension measuring instrument is pressed against the cylindrical inner peripheral surface Wb of the workpiece W at a predetermined rotational position. The measured value at this time is used as a reference value for the radial distance corresponding to the rotational position. Then, the rotary table 21 is rotated, and at each of a plurality of rotational positions detected by the C-axis rotary encoder 22, the rotation measuring point Cm of the rotary table 21 and the inner circumferential surface of the workpiece W are measured by the dimension measuring instrument. The amount of change around the C axis of the radial distance from the (cylindrical inner peripheral surface Wb) is measured.

  The dimension measuring instrument used here may be a dial gauge, a displacement sensor, or the like. The measurement of the radial distance may be performed at each of the rib placement positions with little bending when the workpiece W is provided with ribs at four positions at intervals of 90 degrees.

  (3) As an eccentricity calculating step, the measurement value measured by the rotational position corresponding radial distance measuring step is input to the eccentricity calculating unit 122, and the rotating table 21 with respect to the center point Cw of the workpiece W is input by the eccentricity calculating unit 122. The eccentric amount of the rotation center point Cm is calculated.

  When the dimension measuring device is a dial gauge, the operator inputs the measured value to the eccentricity calculating means 122 manually from the on-board operation panel 73 or the on-floor operation panel 76. When the dimension measuring device is a displacement sensor, the measured value is automatically input to the eccentricity calculating means 122.

  (4) As a radial distance measuring step corresponding to the vertical axis position, the movable tool rest 51 is moved in the Z-axis direction at a predetermined rotational position of the turntable 21, and the dimensions are measured at each of a plurality (two points) of the Z-axis positions. The measuring device measures a radial distance (a variation in the radial distance in the Z-axis direction) between the rotation center point Cm of the turntable 21 and the inner circumferential surface (cylindrical inner circumferential surface Wb) of the workpiece W. In this measurement as well, at the predetermined rotation position of the turntable 21, the dimension measuring instrument attached to the movable tool rest 51 is pressed against the cylindrical inner peripheral surface Wb of the workpiece W at the predetermined Z-axis position. The value is used as a reference value for the radial distance corresponding to the vertical axis position. Then, the rotary table 21 is moved in the Z-axis direction, and the diameter of the rotation center point Cm of the rotary table 21 and the inner circumferential surface (cylindrical inner peripheral surface Wb) of the workpiece W with respect to the Z-axis direction is measured by the dimension measuring instrument. What is necessary is just to measure the variation | change_quantity of direction distance.

  (5) As an inclination angle calculation step, the measurement value measured by the vertical axis position corresponding radial distance measurement step is input to the inclination angle calculation means 124, and the rotation table with respect to the vertical axis Azw of the workpiece W is input by the inclination angle calculation means 124. The tilt angle of the rotation center axis 21 (vertical axis Azm) is calculated.

  When the dimension measuring device is a dial gauge, the operator inputs the measurement value to the tilt angle calculating means 124 manually from the on-board operation panel 73 or the floor operation panel 76. When the dimension measuring device is a displacement sensor, the measured value is automatically input to the tilt angle calculation means 124.

  (6) As an inner circumferential surface machining step, a tool tool 57 is attached to the movable tool rest 51 in place of the dimension measuring instrument, and the turntable 21 is driven to rotate around the C axis by the C axis servomotor 24. 28, the slide beam 31 is moved in the X-axis direction to perform cutting feed, and the axial cutting feed is given by the movement of the movable tool rest 51 in the Z-axis direction to cut the cylindrical inner peripheral surface Wb of the workpiece W. .

  In this inner circumferential surface machining step, eccentricity compensation is performed so that both the eccentricity error due to the eccentricity amount calculated in the eccentricity amount calculation step and the inclination error due to the inclination angle calculated in the inclination angle calculation step are canceled. The X-axis position of the slide beam 31 is corrected by the X-axis servomotor 28 according to the rotation angle position of the turntable 21 detected by the C-axis rotary encoder 22 by the control means 123 and the inclination compensation control means 125, and the workpiece is processed. Cylindrical surface eccentricity-tilt compensation is performed based on the center point Cw of the workpiece W and the vertical axis Azw of the workpiece W.

  Cylindrical surface eccentricity-tilt compensation is a compensation value calculated each time during the inner circumferential surface machining step based on the eccentric amount calculated by the eccentric amount calculating means 122 and the inclination angle calculated by the inclination angle calculating means 124. Alternatively, the compensation value calculated and stored in advance may be used. When the position detection resolution of the C-axis rotary encoder 22 is insufficient, an NC interpolation function that smoothly connects the two points is used.

  Below, the procedure (process) of the end surface processing of the to-be-processed object W by the tool rest rotary type processing machine 1 is demonstrated.

  (1) As a processing machine carrying-in process, the tool post rotating type processing machine 1 is carried in and installed at the center position of the workpiece W. This processing machine carry-in process is exactly the same as that at the time of inner circumferential surface machining, and when the end face machining is performed following the inner circumferential surface machining, a new processing machine carry-in process is unnecessary.

  (2) As a vertical distance measuring step, a dimension measuring device is attached to the upward flange surface processing adapter 111 attached to the movable tool rest 51, and the slide beam 21 is moved in the X-axis direction at a predetermined rotational position of the turntable 21, The vertical distance (X-axis direction) between a predetermined vertical axis position of the movable tool rest 51 and the horizontal end surface (flange surface Wa) of the workpiece W at each of a plurality of (two points) X-axis direction positions by the dimension measuring instrument. Change amount of vertical distance). The dimension measuring instrument used here may also be a dial gauge, a displacement sensor, or the like.

  In this vertical distance measurement, the dimension measuring instrument attached to the movable tool rest 51 is pressed against the reference end surface of the workpiece W, the turntable 21 is rotated, and the turntable 21 is rotated at each of a plurality of rotational positions. You may measure the fluctuation | variation of the vertical axis direction distance of the rotation locus | trajectory of the turntable 21, and the reference end surface of the to-be-processed object W with the dimension measuring device.

  (3) As the end face inclination angle calculation step, the measurement value measured in the vertical distance measurement step is input to the end face inclination angle calculation means 126, and the end face inclination angle calculation means 126 applies the slide beam 31 to the flange surface Wa of the workpiece W. The tilt angle in the X-axis direction (horizontal axis Axm) is calculated.

  When the dimension measuring device is a dial gauge, the operator inputs the measured value to the end surface tilt angle calculating means 126 manually from the on-board operation panel 73 or the on-floor operation panel 76. When the dimension measuring device is a displacement sensor, the measured value is automatically input to the end surface inclination angle calculation means 126.

  (4) As an end face machining step, a bite tool 57 is attached to the upward flange face machining adapter 111 attached to the movable tool rest 51 in place of the dimension measuring device, and the turntable 21 is rotated around the C axis by the C axis servo motor 24. The movable turret 51 is driven to move in the vertical axis direction to perform cutting feed, and the X-axis servomotor 28 moves the slide beam 31 in the X-axis direction to give a radial cutting feed to give the workpiece W The flange surface Wa is cut.

  In this end face machining step, the rotation angle of the turntable 21 detected by the C-axis rotary encoder 22 by the end surface inclination compensation control means 127 so that the inclination error due to the inclination angle calculated in the inclination angle calculation step is canceled. Depending on the position, the Z-axis position of the movable tool rest 51 is corrected according to the rotational angle position of the turntable 21, and end face inclination compensation is performed with reference to the horizontal flange surface Wa of the workpiece W.

  The end face tilt compensation uses the compensation value calculated and stored in advance even if the compensation value calculated each time during the end face machining step is used based on the tilt angle calculated by the end face tilt angle calculating means 126. May be.

  Note that the inclination angle of the slide beam 31 in the X-axis direction (horizontal axis Axm) with respect to the flange surface Wa of the workpiece W is the rotation center axis (vertical axis Azm) of the turntable 21 with respect to the vertical axis Azw of the workpiece W. Since the tilt angle and the phase difference of 90 degrees have the same value, the tilt angle input to the end surface tilt compensation control means 127 may be input with the help of the tilt angle calculated by the tilt angle calculation 124. In this case, the vertical distance measuring step can be omitted.

It is a side view showing one embodiment of a tool post rotation type processing machine to which a processing method and a control device by this invention are applied. It is a top view which shows one Embodiment of the tool post rotary type processing machine with which the processing method by this invention and a control apparatus are applied. It is a fragmentary sectional view showing an axis feed system of one embodiment of a tool post rotary type processing machine to which a processing method and a control device by this invention are applied. It is a block diagram which shows one Embodiment of the control apparatus of the tool rest rotary type processing machine by this invention. It is explanatory drawing which shows an eccentric error. It is explanatory drawing which shows inclination error. It is explanatory drawing which shows an end surface inclination error.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Turret rotation type processing machine 11 Base 12 Turning guide bearing 13 External ring gear 14 Hanging boss 21 Rotating table 22 C axis rotary encoder 23 Pinion 24 C axis servo motor 25 X axis feed screw 26 Bearing part 27 Coupling 28 X Axis servo motor 29 X-axis rotary encoder 31 Slide beam 32 Feed nut 33 Linear guide rail 41 Turret base 42 Linear guide member 43 Z-axis feed screw 44 Bearing section 45 Z-axis servo motor 46 Reduction gear train 47 Z-axis rotary encoder 51 Movable Tool post 52 Linear guide rail 53 Feed nut 54 Tool mounting part 55 Shank receiving part 57 Tool tool 61 Tool post unit 71 Control unit 72 Slip ring device for power supply 73 On-machine operation panel 74 Operating scaffold 75 Protective fence 76 On-floor operation Panels 77 and 78 Antenna 80 On-floor operation table 82 Receiver 101 Leveling block 102 Base plate 103 Side jack 111 Upward flange surface processing adapter 114 Tool tool mounting part 121 Position control part 122 Eccentricity amount calculation means 123 Eccentricity compensation control means 124 Inclination angle calculation Means 125 Inclination compensation control means 126 End face inclination angle calculation means 127 End face inclination compensation control means

Claims (8)

A turret base is provided on the base so as to be rotatable, a slide beam is provided on the turntable so as to be movable in a horizontal axis direction, and the turret base fixed to the end of the slide beam and the turret base Is a processing method using a tool post rotating type processing machine having a movable tool post movable in the vertical axis direction,
A processing machine carrying-in step for carrying in and installing the tool post rotating type processing machine at the center position of the workpiece,
A dimension measuring device is attached to the movable tool rest, the rotating table is rotated, and the rotational center point of the rotating table and the inner circle of the workpiece are measured by the dimension measuring device at each of a plurality of rotational positions of the rotating table. A rotational position corresponding radial distance measuring step for measuring the radial distance to the circumferential surface;
An eccentric amount calculating step of calculating an eccentric amount of the rotation center point of the turntable with respect to the center point of the workpiece from a measurement value measured by the rotational position corresponding radial direction distance measurement step;
A tool is attached to the movable tool post, the rotary table is driven to rotate, the slide beam is moved in a horizontal axis direction to perform cutting feed, and an axial feed is given by vertical axis movement of the movable tool post to give the axial feed. An inner circumferential surface machining step for machining the inner circumferential surface of the workpiece,
In the inner circumferential surface machining step, the position of the slide beam in the horizontal axis direction according to the rotation angle position of the turntable so that the eccentricity error due to the eccentricity amount calculated in the eccentricity amount calculation step is cancelled. A machining method for correcting eccentricity and performing eccentricity compensation based on the center point of the workpiece. A turret base is provided on the base so as to be rotatable, a slide beam is provided on the turntable so as to be movable in a horizontal axis direction, and the turret base fixed to the end of the slide beam and the turret base Is a processing method using a tool post rotating type processing machine having a movable tool post movable in the vertical axis direction,
A processing machine carrying-in step for carrying in and installing the tool post rotating type processing machine at the center position of the workpiece,
A dimension measuring instrument is attached to the movable tool rest, the movable tool rest is moved in the vertical axis direction at a predetermined rotational position of the turntable, and the turntable is rotated by the dimension measuring instrument at each of a plurality of vertical axis positions. A radial distance measurement step corresponding to a vertical axis position for measuring a radial distance between a center point and an inner circumferential surface of the workpiece;
An inclination angle calculating step of calculating an inclination angle of a rotation center axis of the rotary table with respect to a vertical axis of the workpiece from a measurement value measured by the vertical distance measurement step corresponding to the vertical axis position;
A tool is attached to the movable tool post, the rotary table is driven to rotate, the slide beam is moved in a horizontal axis direction to perform cutting feed, and an axial feed is given by vertical axis movement of the movable tool post to give the axial feed. An inner circumferential surface machining step for machining the inner circumferential surface of the workpiece,
In the inner circumferential surface machining step, the position of the slide beam in the horizontal axis direction according to the rotation angle position of the turntable so that the tilt error due to the tilt angle calculated in the tilt angle calculation step is cancelled. A method of correcting inclination and compensating for tilt with reference to the vertical axis of the workpiece. A turret base is provided on the base so as to be rotatable, a slide beam is provided on the turntable so as to be movable in a horizontal axis direction, and the turret base fixed to the end of the slide beam and the turret base Is a processing method using a tool post rotating type processing machine having a movable tool post movable in the vertical axis direction,
A processing machine carrying-in step for carrying in and installing the tool post rotating type processing machine at the center position of the workpiece,
A dimension measuring device is attached to the movable tool rest, the rotating table is rotated, and the rotational center point of the rotating table and the inner circle of the workpiece are measured by the dimension measuring device at each of a plurality of rotational positions of the rotating table. A rotational position corresponding radial distance measuring step for measuring the radial distance to the circumferential surface;
An eccentric amount calculating step of calculating an eccentric amount of the rotation center point of the turntable with respect to the center point of the workpiece from a measurement value measured by the rotational position corresponding radial direction distance measurement step;
A dimension measuring instrument is attached to the movable tool rest, the movable tool rest is moved in the vertical axis direction at a predetermined rotational position of the turntable, and the turntable is rotated by the dimension measuring instrument at each of a plurality of vertical axis positions. A radial distance measurement step corresponding to a vertical axis position for measuring a radial distance between a center point and an inner circumferential surface of the workpiece;
An inclination angle calculating step of calculating an inclination angle of a rotation center axis of the rotary table with respect to a vertical axis of the workpiece from a measurement value measured by the vertical distance measurement step corresponding to the vertical axis position;
A tool is attached to the movable tool post, the rotary table is driven to rotate, the slide beam is moved in a horizontal axis direction to perform cutting feed, and an axial feed is given by vertical axis movement of the movable tool post to give the axial feed. An inner circumferential surface machining step for machining the inner circumferential surface of the workpiece,
In the inner circumferential surface machining step, both the eccentricity error due to the eccentricity calculated in the eccentricity amount calculation step and the inclination error due to the inclination angle calculated in the inclination angle calculation step are canceled. In addition, the horizontal axis direction position of the slide beam is corrected in accordance with the rotational angle position of the turntable, and the cylindrical surface eccentricity-tilt compensation is performed based on the center point of the workpiece and the vertical axis line of the workpiece. Processing method to be performed. A turret base is provided on the base so as to be rotatable, a slide beam is provided on the turntable so as to be movable in a horizontal axis direction, and the turret base fixed to the end of the slide beam and the turret base Is a processing method using a tool post rotating type processing machine having a movable tool post movable in the vertical axis direction,
A processing machine carrying-in step for carrying in and installing the tool post rotating type processing machine at the center position of the workpiece,
A dimension measuring device is attached to the movable tool post, the slide beam is moved in the horizontal axis direction at a predetermined rotational position of the turntable, and the movable tool post is moved by the dimension measuring device at each of a plurality of horizontal axis direction positions. A vertical distance measuring step for measuring a vertical distance between a predetermined vertical axis position and a horizontal end surface of the workpiece;
An end surface tilt angle calculating step of calculating an end surface tilt angle in the horizontal axis direction of the slide beam with respect to a horizontal end surface of the workpiece from a measurement value measured by the vertical distance measuring step;
A tool is attached to the movable tool post, the rotary table is driven to rotate, the movable tool post is moved in the vertical axis direction to perform cutting feed, and a radial feed is given by moving the slide beam in the horizontal axis direction to give the radial feed. An end face machining step for machining the horizontal end face of the workpiece,
In the end face machining step, the vertical axis position of the movable tool rest according to the rotation angle position of the turntable so that the end face tilt error due to the end face tilt angle calculated in the end face tilt angle calculation step is canceled. A processing method for correcting end face inclination compensation based on a horizontal end face of the workpiece. A turret base is provided on the base so as to be rotatable, a slide beam is provided on the turntable so as to be movable in a horizontal axis direction, and the turret base fixed to the end of the slide beam and the turret base A movable tool rest that is movable in the direction of the vertical axis with respect to the workpiece, the entire apparatus is carried in and installed at the center position of the workpiece, a tool is attached to the movable tool rest, the rotary table is driven to rotate, A turret rotary processing machine that performs cutting feed by moving a slide beam in a horizontal axis direction, and processing the inner circumferential surface of the workpiece by giving an axial feed by moving the movable tool rest in a vertical axis direction. A control unit,
The measurement value of the radial distance between the rotation center point of the turntable and the inner circumferential surface of the work piece at a plurality of rotation angle positions of the turntable is input, and the center of the work piece is calculated from the measurement value. An eccentric amount calculating means for calculating an eccentric amount of the rotation center point of the rotary table with respect to a point;
In the machining of the inner circumferential surface of the workpiece, the horizontal movement of the slide beam according to the rotational angle position of the turntable is canceled so that the eccentricity error due to the eccentricity calculated by the eccentricity calculating means is canceled. An eccentricity compensation control means for correcting an axial position and performing eccentricity compensation with reference to the center point of the workpiece;
A control unit for a tool post rotating type processing machine having A turret base is provided on the base so as to be rotatable, a slide beam is provided on the turntable so as to be movable in a horizontal axis direction, and the turret base fixed to the end of the slide beam and the turret base A movable tool rest that is movable in the direction of the vertical axis with respect to the workpiece, the entire apparatus is carried in and installed at the center position of the workpiece, a tool is attached to the movable tool rest, the rotary table is driven to rotate, A turret rotary processing machine that performs cutting feed by moving a slide beam in a horizontal axis direction, and processing the inner circumferential surface of the workpiece by giving an axial feed by moving the movable tool rest in a vertical axis direction. A control unit,
A measurement value of a radial distance between a rotation center point of the turntable and an inner circumferential surface of the workpiece at a plurality of vertical axis positions at a predetermined rotation position of the turntable is input, and the measured value is used to input the measured value. An inclination angle calculating means for calculating an inclination angle of the rotation center axis of the turntable with respect to a vertical axis of the workpiece;
The horizontal axis of the slide beam according to the rotation angle position of the turntable so that an inclination error due to the inclination angle calculated by the inclination angle calculation means is canceled in the inner circumferential surface processing of the workpiece. A tilt compensation control means for correcting the direction position and performing tilt compensation based on the vertical axis of the workpiece;
A control unit for a tool post rotating type processing machine having A turret base is provided on the base so as to be rotatable, a slide beam is provided on the turntable so as to be movable in a horizontal axis direction, and the turret base fixed to the end of the slide beam and the turret base A movable tool rest that is movable in the direction of the vertical axis with respect to the workpiece, the entire apparatus is carried in and installed at the center position of the workpiece, a tool is attached to the movable tool rest, the rotary table is driven to rotate, A turret rotary processing machine that performs cutting feed by moving a slide beam in a horizontal axis direction, and processing the inner circumferential surface of the workpiece by giving an axial feed by moving the movable tool rest in a vertical axis direction. A control unit,
The measurement value of the radial distance between the rotation center point of the turntable and the inner circumferential surface of the work piece at a plurality of rotation angle positions of the turntable is input, and the center of the work piece is calculated from the measurement value. An eccentric amount calculating means for calculating an eccentric amount of the rotation center point of the rotary table with respect to a point;
A measurement value of a radial distance between a rotation center point of the turntable and an inner circumferential surface of the workpiece at a plurality of vertical axis positions at a predetermined rotation position of the turntable is input, and the measured value is used to input the measured value. An inclination angle calculating means for calculating an inclination angle of the rotation center axis of the turntable with respect to a vertical axis of the workpiece;
The horizontal axis of the slide beam according to the rotational angle position of the turntable so that the eccentric error due to the eccentricity calculated by the eccentricity calculating means is canceled in the inner circumferential surface processing of the workpiece. Eccentricity compensation control means for correcting the directional position and performing eccentricity compensation based on the center point of the workpiece,
In the inner circumferential surface machining step of the workpiece, the slide beam is horizontally leveled according to the rotation angle position of the turntable so that the tilt error due to the tilt angle calculated by the tilt angle calculation means is canceled. A tilt compensation control means for correcting a position in the axial direction and performing tilt compensation based on a vertical axis of the workpiece;
A control unit for a tool post rotating type processing machine having A turret base is provided on the base so as to be rotatable, a slide beam is provided on the turntable so as to be movable in a horizontal axis direction, and the turret base fixed to the end of the slide beam and the turret base A movable tool rest that is movable in the direction of the vertical axis with respect to the workpiece, the entire apparatus is carried in and installed at the center position of the workpiece, a tool is attached to the movable tool rest, the rotary table is driven to rotate, A control unit for a turret rotary processing machine that moves a movable turret in the vertical axis direction to perform cutting feed, and gives a radial feed by moving the slide beam in the horizontal axis direction to process the horizontal end face of the workpiece. Because
A measurement value of a vertical distance between a predetermined vertical axis position of the movable tool rest and a horizontal end surface of the workpiece at a plurality of horizontal axis direction positions at a predetermined rotation position of the turntable is input, and the workpiece is calculated from the measurement value. An end surface tilt angle calculating means for calculating an end surface tilt angle in the horizontal axis direction of the slide beam with respect to a horizontal end surface of an object;
In the end face machining of the workpiece, the vertical movement of the movable tool rest according to the rotation angle position of the turntable is canceled so that the end face tilt error due to the end face tilt angle calculated by the end face tilt angle calculating means is canceled. End face inclination compensation control means for correcting the axial position and performing end face inclination compensation with reference to the horizontal end face of the workpiece;
A control unit for a tool post rotating type processing machine having

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