WO2017043171A1 - 機械部品の製造方法、機械部品の製造装置、回転対称面の加工方法、記録媒体およびプログラム - Google Patents
機械部品の製造方法、機械部品の製造装置、回転対称面の加工方法、記録媒体およびプログラム Download PDFInfo
- Publication number
- WO2017043171A1 WO2017043171A1 PCT/JP2016/070144 JP2016070144W WO2017043171A1 WO 2017043171 A1 WO2017043171 A1 WO 2017043171A1 JP 2016070144 W JP2016070144 W JP 2016070144W WO 2017043171 A1 WO2017043171 A1 WO 2017043171A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- axis
- cutting
- cutting edge
- rotationally symmetric
- symmetric surface
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/36—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes
Definitions
- the present invention relates to a machine part manufacturing method, a machine part manufacturing apparatus, a rotationally symmetric surface processing method, a recording medium recording a program of the manufacturing method, and the program.
- Patent Document 1 discloses a machining method of a workpiece using a linear cutting edge.
- the cutting edge is inclined with respect to the feed direction and is fed in a direction transverse to the rotation axis of the workpiece.
- the method for manufacturing a mechanical component according to one aspect of the present invention is a method for manufacturing a mechanical component having a rotationally symmetric surface.
- the manufacturing method includes a step of machining the rotationally symmetric surface by sending a cutting edge having a linear shape or a curved shape while contacting the cutting edge of the rotationally symmetric surface.
- the processing step uses a three-dimensional orthogonal coordinate system in which the rotation axis is the Z-axis, the axis in the radial direction of the rotational symmetry plane is the X-axis, and the axis perpendicular to both the Z-axis and the X-axis is the Y-axis. Determining the trajectory of the cutting edge and feeding the cutting edge along the trajectory.
- the determining step is: (1) the first end of the cutting edge is positioned at the cutting start position of the rotationally symmetric surface, and (2) N (N is an integer of 2 or more) regions for dividing the cutting edge. (3) The first inclination corresponding to the inclination of the tangent line at each cutting point of the N regions on the cutting plane of the rotationally symmetric surface including the Z-axis and the cutting point A condition that is equal to the second inclination corresponding to the target inclination of the tangent line passing through the point and touching the rotationally symmetric surface, and (4) the second end of the cutting edge is positioned at the cutting end position of the rotationally symmetric surface. To determine the trajectory.
- FIG. 1 is a perspective view showing a manufacturing method according to an embodiment of the present invention.
- FIG. 2 is a block diagram schematically showing the configuration of the manufacturing apparatus according to one embodiment of the present invention.
- FIG. 3 is a graph showing the surface roughness of the surface cut according to the manufacturing method according to the embodiment of the present invention.
- FIG. 4 is a schematic view of a cutting edge used in the processing method according to this embodiment.
- FIG. 5 is a schematic plan view of a rotationally symmetric surface processed by the processing method according to this embodiment.
- FIG. 6 is a diagram for explaining the coordinates of the cutting edge.
- FIG. 7 is a view for explaining a rotationally symmetric surface processed by the cutting edge.
- FIG. 8 is a view showing a cutting edge that moves while contacting a rotationally symmetric surface.
- FIG. 9 is a model diagram expressing the rotationally symmetric surface and the cutting edge on the XZ plane in the vicinity of the position where the rotationally symmetric surface and the cutting edge are in contact with each other.
- FIG. 10 is a model diagram expressing the rotationally symmetric surface and the cutting edge on the XY plane in the vicinity of the position where the rotationally symmetric surface and the cutting edge come into contact.
- FIG. 11 is a diagram for explaining an X-axis coordinate and a Y-axis coordinate of a cutting point.
- FIG. 12 is a diagram for explaining the cutting edge projected onto the X′Z plane.
- FIG. 13 is an XY plan view for explaining the relationship between the cutting point on the rotationally symmetric surface and the tip of the cutting edge.
- FIG. 14 is an X′Z plan view for explaining the relationship between the cutting point on the rotationally symmetric surface and the tip of the cutting edge.
- FIG. 15 is a diagram illustrating an example in which the inclination of the tangent of the cutting edge is different from the target inclination of the tangent of the rotationally symmetric surface.
- FIG. 16 is a diagram illustrating a method for calculating the inclination of the cutting edge on the XZ plane.
- FIG. 17 is a diagram illustrating a method for calculating the inclination of the cutting edge on the XY plane.
- FIG. 18 is a diagram for explaining the coordinates of the nodes on the rotationally symmetric surface.
- FIG. 19 is a diagram for explaining parameters of a rotationally symmetric surface for calculating the trajectory of the cutting edge.
- FIG. 20 is a diagram showing angles used for calculating the trajectory of the cutting edge.
- FIG. 21 is a flowchart showing a method of manufacturing a machine part according to the embodiment of the present invention.
- FIG. 22 is a flowchart showing details of the trajectory calculation process shown in FIG.
- FIG. 23 is a diagram showing five regions of the cutting edge for monitoring the locus of the cutting edge.
- FIG. 24 is a diagram showing the result of calculating the processing of the curved rotating surface by the curved cutting edge.
- FIG. 25 is a diagram showing a trajectory error in the Z-axis direction based on the calculation result shown in FIG.
- FIG. 26 is a diagram illustrating a result of calculating the processing of the linear rotating surface with a curved cutting edge.
- FIG. 27 is a diagram showing a trajectory error in the Z-axis direction based on the calculation result shown in FIG.
- FIG. 28 is a schematic diagram of a linear cutting edge.
- FIG. 29 is a diagram showing a result of calculation of processing of a curved rotating surface by a linear cutting edge.
- FIG. 30 is a diagram showing the trajectory error in the Z-axis direction based on the calculation result shown in FIG.
- FIG. 31 is a diagram showing the result of calculating the processing of the linear rotating surface with a linear cutting edge.
- FIG. 32 is a diagram showing a trajectory error in the Z-axis direction based on the calculation result shown in FIG.
- WO2001 / 043902 discloses a cylindrical side as a rotationally symmetric surface.
- the rotationally symmetric surface is not limited to the cylindrical side surface. There is an obvious or potential need to accurately machine various rotationally symmetric surfaces by cutting.
- An object of the present disclosure is to provide a technique for accurately machining various rotationally symmetric surfaces by cutting. [Effects of the present disclosure] According to the present disclosure, various rotationally symmetric surfaces can be accurately processed by cutting.
- a method for manufacturing a mechanical component according to one aspect of the present invention is a method for manufacturing a mechanical component having a rotationally symmetric surface.
- the manufacturing method includes a step of machining the rotationally symmetric surface by sending a cutting edge having a linear shape or a curved shape while contacting the cutting edge of the rotationally symmetric surface.
- the processing step uses a three-dimensional orthogonal coordinate system in which the rotation axis is the Z-axis, the axis in the radial direction of the rotational symmetry plane is the X-axis, and the axis perpendicular to both the Z-axis and the X-axis is the Y-axis. Determining the trajectory of the cutting edge and feeding the cutting edge along the trajectory.
- the determining step is: (1) the first end of the cutting edge is positioned at the cutting start position of the rotationally symmetric surface, and (2) N (N is an integer of 2 or more) regions for dividing the cutting edge. (3) The first inclination corresponding to the inclination of the tangent line at each cutting point of the N regions on the cutting plane of the rotationally symmetric surface including the Z-axis and the cutting point A condition that is equal to the second inclination corresponding to the target inclination of the tangent line passing through the point and touching the rotationally symmetric surface, and (4) the second end of the cutting edge is positioned at the cutting end position of the rotationally symmetric surface. To determine the trajectory.
- machine parts having various rotationally symmetric surfaces can be machined with high accuracy.
- a cutting edge having a linear shape or a curved shape is fed while being brought into contact with the cutting point of the rotationally symmetric surface. More specifically, the cutting blades are fed so that N regions that divide the cutting blades sequentially contact the rotationally symmetric surface.
- the accuracy regarding the surface roughness of the rotationally symmetric surface can be increased. That is, a smoother surface can be obtained.
- the inclination of the cutting edge at the cutting point affects the radius of the processed rotationally symmetric surface.
- the plane including the Z-axis and the cutting point is a rotationally symmetric surface (a cutting surface of a machine part).
- the trajectory of the cutting edge is such that the inclination of the tangent line (first inclination) at each cutting point of the N regions of the cutting edge on this plane is the target inclination of the tangent line passing through the cutting point and touching the rotational symmetry plane ( The second slope) is satisfied.
- a cutting edge is sent along this track. Therefore, a rotationally symmetric surface can be formed according to the target shape.
- the first inclination is equal to the second inclination includes not only the case where both are completely equal, but also the case where the first inclination is substantially equal to the second inclination. “Substantially equal” includes, for example, a case where the difference between the slope of the first and the slope of the second is equal to or smaller than the minimum measured value. In the case where a manufacturing tolerance is defined, if the difference between the first slope and the second slope is within the tolerance, the first slope and the second slope are substantially equal. May be considered.
- the coordinates (X (t), Y (t) of the first edge of the cutting edge are determined by a variable t taking (N + 1) values of 0 or more and 1 or less.
- X (t) (R sh (t) cos ⁇ (t) ⁇ X chip (t))
- Y (t) (R sh (t) sin ⁇ (t) ⁇ Y chip (t))
- Z (t) (Z sh (t) ⁇ Z chip (t))
- the coordinates (X (0), Y (0), Z (0)) are the coordinates of the first end of the cutting edge positioned at the cutting start position and the origin of the three-dimensional orthogonal coordinate system.
- (X chip (t), Y chip (t), Z chip (t)) is a coordinate representing the position of the cutting edge in contact with the rotationally symmetric surface at the cutting point with reference to the first end of the cutting edge. is there.
- (X chip (1), Y chip (1), Z chip (1)) represent the coordinates of the second end of the cutting edge positioned at the cutting end position.
- R sh (t) represents the radius of the rotationally symmetric surface corresponding to the distance from the center of rotation on the Z axis to the cutting point.
- Z sh (t) represents coordinates on the Z axis of the rotation center.
- ⁇ (t) is an angle formed by a straight line connecting the cutting point projected on the XY plane and the origin of the XY plane with respect to the X axis.
- ⁇ (t) is an angle formed by the i-th region with respect to the X axis when the i-th region in contact with the cutting point among the N regions of the cutting edge is projected onto the XZ plane.
- ⁇ (t) is an angle formed by the i-th region with respect to the X axis when the i-th region is projected onto the XY plane.
- ⁇ s (t) is an angle representing the second inclination.
- the cutting edge can be virtually divided into N regions by using the variable t. Furthermore, the rotationally symmetric surface can be virtually divided into N areas each corresponding to the N areas of the cutting edge. Accordingly, the trajectory of the cutting edge can be determined so that each region of the cutting edge cuts a corresponding region of the rotationally symmetric surface. Since the first end portion of the cutting edge is positioned at the cutting start position, the movement of the cutting edge from the cutting start position to the cutting end position can be expressed by the trajectory of the first end portion of the cutting edge. As the cutting edge moves, the position of the cutting point on the rotationally symmetric surface changes.
- Cutting point coordinates (R sh (t) cos ⁇ (t), R sh (t) sin ⁇ (t), Z sh (t)) and relative coordinates of the cutting point with reference to the first end of the cutting edge
- the trajectory of the first end of the cutting edge can be determined by (X chip (t), Y chip (t), Z chip (t)).
- the cutting edge has a curved shape.
- t is determined so as to divide the central angle determined according to the curved radius of curvature into N equal parts.
- the trajectory of the cutting edge having a curved shape can be determined.
- the cutting edge has a linear shape. t is determined so that the length of the cutting edge between the first end and the second end is equally divided into N.
- a machine part manufacturing apparatus is an apparatus for executing the machine part manufacturing method according to any one of (1) to (4).
- the rotationally symmetric surface of the machine part can be processed with high accuracy.
- machine parts can be manufactured with high accuracy.
- a processing method is a processing method of a rotationally symmetric surface.
- the processing method includes a step of processing the rotationally symmetric surface by sending a cutting edge having a linear shape or a curved shape while contacting the cutting edge of the rotationally symmetric surface.
- the processing step uses a three-dimensional orthogonal coordinate system in which the rotation axis is the Z-axis, the axis in the radial direction of the rotational symmetry plane is the X-axis, and the axis perpendicular to both the Z-axis and the X-axis is the Y-axis. Determining the trajectory of the cutting edge and feeding the cutting edge along the trajectory.
- the determining step is: (1) the first end of the cutting edge is positioned at the cutting start position of the rotationally symmetric surface, and (2) N (N is an integer of 2 or more) regions for dividing the cutting edge. (3) The first inclination corresponding to the inclination of the tangent line at each cutting point of the N regions on the cutting plane of the rotationally symmetric surface including the Z-axis and the cutting point A condition that is equal to the second inclination corresponding to the target inclination of the tangent line passing through the point and touching the rotationally symmetric surface, and (4) the second end of the cutting edge is positioned at the cutting end position of the rotationally symmetric surface. To determine the trajectory.
- a recording medium is a computer-readable recording medium on which a program for manufacturing a machine part having a rotationally symmetric surface is recorded.
- the recording medium causes the computer to execute a step of processing the rotationally symmetric surface by sending a cutting edge having a linear shape or a curved shape while contacting the cutting point of the rotationally symmetric surface.
- the processing step uses a three-dimensional orthogonal coordinate system in which the rotation axis is the Z-axis, the axis in the radial direction of the rotational symmetry plane is the X-axis, and the axis perpendicular to both the Z-axis and the X-axis is the Y-axis.
- the step of determining the trajectory includes the coordinates (X (t), Y (t), Z (t)) of the first edge of the cutting edge by a variable t taking (N + 1) values from 0 to 1.
- the X (t) (R sh (t) cos ⁇ (t) ⁇ X chip (t))
- Y (t) (R sh (t) sin ⁇ (t) ⁇ Y chip (t))
- Z (t) (Z sh (t) ⁇ Z chip (t))
- the coordinates (X (0), Y (0), Z (0)) are the coordinates of the first end portion of the cutting edge positioned at the cutting start position of the rotationally symmetric surface, and in the three-dimensional orthogonal coordinate system. It is the origin.
- (X chip (t), Y chip (t), Z chip (t)) is a coordinate representing the position of the cutting edge in contact with the rotationally symmetric surface at the cutting point with reference to the first end of the cutting edge. is there.
- (X chip (1), Y chip (1), Z chip (1)) represent the coordinates of the second end of the cutting edge positioned at the cutting end position of the rotationally symmetric surface.
- R sh (t) represents the radius of the rotationally symmetric surface corresponding to the distance from the center of rotation on the Z axis to the cutting point.
- Z sh (t) represents coordinates on the Z axis of the rotation center.
- ⁇ (t) is an angle formed by a straight line connecting the cutting point projected on the XY plane and the origin of the XY plane with respect to the X axis.
- the first inclination corresponding to the inclination of the tangent at each cutting point in the N regions is set as the tangential target passing through the cutting point and in contact with the rotationally symmetric surface.
- ⁇ (t) is an angle formed by the i-th region with respect to the X axis when the i-th region in contact with the cutting point among the N regions of the cutting edge is projected onto the XZ plane.
- ⁇ (t) is an angle formed by the i-th region with respect to the X axis when the i-th region is projected onto the XY plane.
- ⁇ s (t) is an angle representing the second inclination.
- a program according to an aspect of the present invention is a program for manufacturing a machine part having a rotationally symmetric surface.
- the program causes the computer to execute the step of machining the rotationally symmetric surface by sending a cutting edge having a linear shape or a curved shape while contacting the cutting point of the rotationally symmetric surface.
- the processing step uses a three-dimensional orthogonal coordinate system in which the rotation axis is the Z-axis, the axis in the radial direction of the rotational symmetry plane is the X-axis, and the axis perpendicular to both the Z-axis and the X-axis is the Y-axis. Determining the trajectory of the cutting edge and feeding the cutting edge along the trajectory.
- the step of determining the trajectory includes the coordinates (X (t), Y (t), Z (t)) of the first edge of the cutting edge by a variable t taking (N + 1) values from 0 to 1.
- X (t) (R sh (t) cos ⁇ (t) ⁇ X chip (t))
- Y (t) (R sh (t) sin ⁇ (t) ⁇ Y chip (t))
- Z (t) (Z sh (t) ⁇ Z chip (t))
- the coordinates (X (0), Y (0), Z (0)) are the coordinates of the first end of the cutting edge positioned at the cutting start position on the rotationally symmetric surface, and are in a three-dimensional orthogonal coordinate system.
- Is the origin of (X chip (t), Y chip (t), Z chip (t)) is a coordinate representing the position of the cutting edge in contact with the rotationally symmetric surface at the cutting point with reference to the first end of the cutting edge. is there.
- (X chip (1), Y chip (1), Z chip (1)) represent the coordinates of the second end of the cutting edge positioned at the cutting end position of the rotationally symmetric surface.
- R sh (t) represents the radius of the rotationally symmetric surface corresponding to the distance from the center of rotation on the Z axis to the cutting point.
- Z sh (t) represents coordinates on the Z axis of the rotation center.
- ⁇ (t) is an angle formed by a straight line connecting the cutting point projected on the XY plane and the origin of the XY plane with respect to the X axis.
- the first inclination corresponding to the inclination of the tangent at each cutting point in the N regions is set as the tangential target passing through the cutting point and in contact with the rotationally symmetric surface.
- cos ( ⁇ (t) + ⁇ (t)) / cos ⁇ (t) tan ⁇ (t) / tan ⁇ s (t) Meet.
- ⁇ (t) is an angle formed by the i-th region with respect to the X axis when the i-th region in contact with the cutting point among the N regions of the cutting edge is projected onto the XZ plane.
- ⁇ (t) is an angle formed by the i-th region with respect to the X axis when the i-th region is projected onto the XY plane.
- ⁇ s (t) is an angle representing the second inclination.
- FIG. 1 is a perspective view showing a manufacturing method according to an embodiment of the present invention.
- the mechanical component 1 having a rotationally symmetric surface (processed surface) 1 ⁇ / b> A rotates about the rotation axis 10.
- the machine part 1 is a manufactured product manufactured by the manufacturing method according to an embodiment of the present invention.
- FIG. 1 shows a processing step which is one step of the manufacturing method according to one embodiment of the present invention. Therefore, in the process shown in FIG. 1, the machine part 1 can also be called a workpiece.
- the machining process includes cutting.
- the manufacturing method according to an embodiment of the present invention may include other steps.
- the manufacturing method can include, for example, a casting process, an assembly process, an inspection process, and the like.
- the feed of the cutting edge 2A is controlled according to a three-dimensional orthogonal coordinate system.
- the Z axis corresponds to the rotation axis 10.
- the X axis and the Y axis are both perpendicular to the Z axis and perpendicular to each other.
- the X-axis can be a direction that determines the diameter or radius dimension of the rotationally symmetric surface, also referred to as the radial direction or the blade feed direction in the cutting process.
- the Y axis is an axis orthogonal to both the X axis and the Z axis, and is called, for example, a horizontal direction or a rotation direction.
- axes defined as an X axis, a Y axis, and a Z axis in a lathe can be applied to the X axis, the Y axis, and the Z axis in the embodiment of the present invention.
- the Z-axis direction is defined as the feed (vertical feed) direction of the cutting edge 2A.
- the negative direction of the X axis is defined as the direction of cut into the machine part 1.
- the direction of the Y axis is opposite to the moving direction of the cutting edge 2A for cutting.
- the cutting edge 2A is a part of the cutting tip 2B.
- the cutting tip 2B is detachable from a holder (tool). In FIG. 1, the holder is not shown.
- cutting edge when it is not necessary to distinguish between the cutting edge 2A and the cutting tip 2B, both are collectively referred to as “cutting edge”.
- the cutting edge 2A is fed while contacting the machine component 1 along a track having an X-axis component, a Y-axis component, and a Z-axis component. From the start of cutting to the end of cutting, the individual regions of the cutting edge 2A from the front end 3_1 to the rear end 3_5 sequentially come into contact with the surface to be processed (rotationally symmetric surface 1A).
- the position where the cutting edge 2A contacts on the rotationally symmetric surface 1A is referred to as a “cutting point”.
- point 3_t represents the position of the cutting edge 2A that contacts the cutting point of the rotationally symmetric surface 1A.
- a rotationally symmetric surface 1A is formed by the movement of the cutting edge 2A.
- the type of the rotationally symmetric surface 1A is not particularly limited.
- the rotationally symmetric surface 1A can be determined by a line rotating around the rotation axis 10. This line is referred to as a “generating line” in the present embodiment.
- the generatrix corresponds to a line representing a portion corresponding to the rotational symmetry plane 1 ⁇ / b> A.
- the generatrix of the rotationally symmetric surface 1A may be a straight line.
- the rotationally symmetric surface 1A may be a cylindrical side surface or a truncated cone surface.
- the generatrix of the rotationally symmetric surface 1A may be an arbitrary curve including an arc.
- FIG. 1 and the drawings described below an example in which the generatrix of the rotationally symmetric surface is a curve is shown.
- a rotationally symmetric surface whose bus is an arbitrary curve including an arc is hereinafter referred to as a “curve rotating surface”.
- the type of the machine part 1 is not particularly limited.
- the mechanical component 1 is an automobile drive system component.
- the machine part 1 is a pulley for constituting a continuously variable transmission.
- FIG. 2 is a block diagram schematically showing the configuration of the manufacturing apparatus according to an embodiment of the present invention.
- the manufacturing apparatus 100 according to an embodiment of the present invention can be realized by, for example, a computerized numerical control (CNC) lathe.
- the manufacturing apparatus 100 includes an input unit 101, a display unit 102, a storage unit 103, a control unit 104, a drive unit 105, a feed mechanism 106, a holder 2, and a cutting blade 2A.
- a cutting tip 2B having the following.
- the input unit 101 is operated by the user.
- the input unit 101 receives information from the user and sends the information to the control unit 104.
- the information from the user includes information on the program selected by the user, various data necessary for manufacturing the machine part 1 (processing of the rotationally symmetric surface), instructions from the user, and the like.
- the display unit 102 displays characters, symbols, figures, and the like.
- the display unit 102 can display information received by the input unit 101, a calculation result of the control unit 104, and the like.
- the storage unit 103 stores information received by the input unit 101, a program for manufacturing the machine part 1, and the like.
- This program includes a program for processing a rotationally symmetric surface.
- the storage unit 103 is configured by a rewritable nonvolatile storage device. Therefore, the memory
- the program may be provided through a communication line. Also in this case, the program is stored in the storage unit 103.
- the control unit 104 is a computer configured to control the manufacturing apparatus 100 in an integrated manner.
- the control unit 104 includes a calculation unit 110.
- the calculation unit 110 performs numerical calculation based on information received by the input unit 101 and information stored in the storage unit 103.
- the calculation unit 110 may be realized by a CPU (Central Processing Unit) executing a program.
- CPU Central Processing Unit
- the drive unit 105 drives the feed mechanism 106.
- the drive unit 105 is controlled by the control unit 104.
- the feed mechanism 106 is configured to feed the holder 2 in the X-axis direction, the Y-axis direction, and the Z-axis direction.
- the holder 2 holds the cutting edge 2A by holding the cutting tip 2B.
- the holder 2 is attached to the feed mechanism 106.
- the holder 2 is fixed to the feed mechanism 106 so as not to rotate with respect to the rotation axis. Therefore, the holder 2 maintains the angle of the cutting edge 2A when processing the rotationally symmetric surface 1A.
- the holder 2 can rotate around the rotation axis when the rotationally symmetric surface 1A is not processed (in the example, during maintenance of the manufacturing apparatus 100). Thereby, the advantage that the maintenance of the manufacturing apparatus 100 becomes easy, for example is acquired.
- the cutting edge 2A is formed by a ridge line between the rake face and the flank face of the cutting tip 2B.
- the ridge is a curve. That is, the shape of the cutting edge 2A is a curved line. In one example, the cutting edge 2A has an arc shape.
- the cutting edge 2A has a shape that is convex toward the rotationally symmetric surface 1A.
- the cutting edge 2A may have a dent.
- the shape of the cutting edge 2A can be determined so that the cutting edge 2A does not interfere with the processed portion of the rotationally symmetric surface 1A.
- the shape of the cutting edge 2A may be a linear shape.
- the term “straight” means that the shape of the cutting edge 2A is a straight line.
- the shape of the cutting tip 2B for realizing a linear cutting edge is not particularly limited. In one embodiment, the cutting tip 2B has a triangular prism shape.
- each region of the cutting edge 2A sequentially contacts the rotationally symmetric surface 1A from the start of cutting to the end of cutting regardless of the shape of the cutting edge 2A.
- wear is dispersed throughout the cutting edge 2A. Therefore, the life of the cutting edge 2A can be extended.
- FIG. 3 is a graph showing the surface roughness of the surface cut according to the manufacturing method according to the embodiment of the present invention.
- FIG. 3 an example of the result of processing a cylindrical side surface by the linear cutting edge 2A is shown.
- a cutting method point cutting
- the cutting edge is sent while bringing the same portion of the cutting edge into contact with the machining surface.
- the coordinate on the X-axis of the cutting edge is changed while feeding the cutting edge in the Z-axis direction.
- various shapes of rotationally symmetric surfaces can be formed.
- the contact resistance of the cutting edge is small.
- a spiral locus is likely to be formed on the processed surface.
- the manufacturing method according to the embodiment of the present invention can increase the accuracy (surface roughness) of the processed surface while increasing the feed rate of the cutting edge by using the entire cutting edge. Therefore, a smoother surface can be formed.
- FIG. 4 is a schematic view of a cutting edge used in the processing method according to this embodiment.
- FIG. 5 is a schematic plan view of a rotationally symmetric surface processed by the processing method according to this embodiment.
- the cutting edge 2A of the cutting tip 2B is virtually divided into N areas (N is an integer of 2 or more). N regions are referred to as blades 21, 22,..., 2N. Each of the blades 21, 22, ..., 2N has a linear shape. When the cutting edge 2A has a curved shape, the shape of the cutting edge 2A is approximated by N line segments.
- N blades 21, 22,..., 2N sequentially contact the rotationally symmetric surface 1A.
- the rotationally symmetric surface 1A is virtually divided into regions 11, 12,..., 1N.
- the i-th blade (i is an integer from 1 to N) of the N blades cuts the i-th region of the N regions.
- the rotationally symmetric surface 1A is processed while using the entire cutting edge 2A. It is possible to prevent a part of the cutting edge 2A from being significantly worn compared to other parts. Therefore, the lifetime of the chip can be extended. Furthermore, since the rotationally symmetric surface 1A is processed while using the entire cutting edge 2A, the accuracy of the processed surface can be increased (see FIG. 3).
- FIG. 6 is a diagram for explaining the coordinates of the cutting edge.
- the variable t is a variable for expressing the degree of progress of cutting of the rotationally symmetric surface by the cutting edge 2A.
- the variable t is referred to as “cutting progress t”.
- the cutting progress t takes (N + 1) values from 0 to 1.
- N blades 21, 22,..., 2N sequentially contact the rotationally symmetric surface 1A. Therefore, the position of the point 3_t changes according to the cutting progress t.
- the coordinates of the point 3_t are expressed as (X chip (t), Y chip (t), Z chip (t)).
- (X chip (t), Y chip (t), Z chip (t)) are relative coordinates based on the position of the tip 3_1 of the cutting edge 2A.
- the coordinates (X chip (t), Y chip (t), Z chip (t)) depend on the shape of the cutting edge 2A, the mounting angle of the cutting edge 2A, and the angle of the holder 2.
- the mounting angle of the cutting edge 2A corresponds to the inclination of the cutting edge 2A with respect to the X axis when the cutting edge 2A is projected on the XZ plane.
- the angle of the holder 2 corresponds to the inclination of the cutting edge 2A with respect to the X axis when the cutting edge 2A is projected onto the XY plane.
- FIG. 7 is a view for explaining a rotationally symmetric surface processed by the cutting edge.
- the R axis is a radial axis of the rotationally symmetric surface.
- the R axis is orthogonal to the Z axis.
- the rotationally symmetric surface 1A is represented by a line. This line can be either a straight line or a curve, depending on the rotational symmetry plane.
- cutting is performed from the outer end of the rotationally symmetric surface 1A toward the inner end of the rotationally symmetric surface.
- the position of the cutting point P changes. Therefore, the coordinates of the cutting point P can be expressed as a function depending on the cutting progress t.
- R sh (t), Z sh (t) The coordinates of the cutting point P are expressed as (R sh (t), Z sh (t)).
- R sh (t) is the radius of the rotationally symmetric surface 1A corresponding to the distance from the center of rotation on the Z axis to the cutting point P.
- Z sh (t) is the Z-axis coordinate of the rotation center.
- the function R sh (t) and the function Z sh (t) can be appropriately determined according to various shapes of rotational symmetry planes.
- R max be the radius of the rotationally symmetric surface at the cutting start position P1.
- R max is a predetermined value.
- R min be the radius of the rotationally symmetric surface at the cutting end position P2.
- FIG. 8 is a view showing a cutting edge that moves while contacting a rotationally symmetric surface. As shown in FIG. 8, the cutting edge 2A is fed while being in contact with the cutting point P of the rotationally symmetric surface 1A.
- the tip 3_1 (first end) of the cutting edge 2A is positioned at the cutting start position P1 of the rotationally symmetric surface 1A.
- the position of the point 3_t on the cutting edge 2A is equal to the position of the tip 3_1 of the cutting edge 2A.
- (X chip (0), Y chip (0), Z chip (0)) is set as the origin of the XYZ coordinate system.
- the coordinates of the cutting start position P1 are (R sh (0), Z sh (0)).
- the coordinates of the cutting end position P2 are (R sh (1), Z sh (1)).
- the coordinates of the point 3_t on the cutting edge 2A are (X chip (t), Y chip (t), Z chip (t)).
- the cutting edge 2A is in contact with the cutting point P on the rotationally symmetric surface 1A at the point 3_t.
- the coordinates of the cutting point P are expressed as (R sh (t), Z sh (t)).
- Z chip (t) and Z sh (t) are different. The reason is that the Z-axis coordinate Z chip (t) of the point 3_t is expressed as a relative coordinate based on the Z coordinate of the tip 3_1 of the cutting edge 2A.
- FIG. 9 is a model expressing the rotationally symmetric surface 1A and the cutting edge 2A on the XZ plane in the vicinity of the position where the rotationally symmetric surface 1A and the cutting edge 2A contact each other.
- FIG. 10 is a model diagram expressing the rotationally symmetric surface 1A and the cutting edge 2A on the XY plane in the vicinity of the position where the rotationally symmetric surface 1A and the cutting edge 2A contact each other.
- blade 2i is the i-th blade among the N blades of cutting edge 2A.
- the region 1i is the i-th region among the N regions of the rotationally symmetric surface 1A.
- the blade 2 i contacts the region 1 i at the cutting point P.
- the position on the blade 2i that contacts the region 1i is represented by a point 3_t.
- the angle ⁇ s (t) represents the inclination of the region 1i projected on the XZ plane.
- the angle ⁇ s (t) is an angle that represents the inclination of the tangent line that passes through the cutting point P and touches the region 1 i projected onto the XZ plane.
- the slope of the tangent corresponds to the ratio of the change amount in the Z-axis direction to the change amount in the X-axis direction. Therefore, the angle ⁇ s (t) can be expressed according to the following equation.
- dt is the amount of change in the cutting progress t.
- the angle ⁇ (t) represents the inclination of the blade 2i projected on the XZ plane with respect to the X axis. Specifically, the angle ⁇ (t) is an angle that represents the inclination of the tangent line that passes through the point 3_t and touches the blade 2i projected on the XZ plane.
- the angle ⁇ (t) can be expressed according to the following equation.
- the angle ⁇ (t) of the holder 2 can be expressed as an angle of a tangent line that passes through the point 3_t and touches the blade 2i projected on the XY plane.
- the angle ⁇ (t) can also be defined as the angle of the blade 2i.
- the angle ⁇ (t) can be expressed according to the following equation:
- FIG. 11 is a diagram for explaining the X-axis coordinates and the Y-axis coordinates of the cutting point P.
- the cutting point P when the cutting point P is projected on the XY plane, the cutting point P is located on the circumference of the radius R sh (t) with the origin as the center.
- the X ′ axis is an axis connecting the origin and the cutting point P in the XY plane.
- the cutting angle ⁇ (t) represents an angle between the X ′ axis and the X axis on the XY plane.
- the cutting angle ⁇ (t) depends on t. As t changes from 0 to 1, the X ′ axis rotates in the XY plane about the origin.
- dL XY is the length of the blade 2i projected on the XY plane.
- the blade 2i is inclined at an angle ⁇ (t) with respect to the X axis.
- the length in the X-axis direction, the length in the Z-axis direction, and the length in the X′-axis direction of the blade 2i are dX, dZ, and dX ′, respectively.
- dX, dZ, dX ′ can be expressed according to the following equation using dL XY .
- FIG. 12 is a diagram for explaining the cutting edge projected on the X′Z plane.
- the X′Z plane is a plane including the Z axis and the cutting point P, and corresponds to the cutting plane of the rotationally symmetric plane 1 ⁇ / b> A (the cutting plane of the mechanical component 1).
- An angle formed with respect to the X ′ axis of the blade 2 i projected onto the X′Z plane is represented by ⁇ ′ (t). The following relationship holds for the angle ⁇ ′ (t).
- the inclination of the rotationally symmetric surface 1A at the cutting point P becomes the target inclination (angle ⁇ s (t)) on the cut surface (X′Z plane).
- the blade 2i must be sent.
- the blade 2i has a linear shape.
- the inclination of the processed rotationally symmetric surface 1A reflects the inclination of the blade 2i.
- the cutting angle ⁇ (t) is determined so that the cutting angle ⁇ (t) satisfies the above relationship.
- the inclination (first inclination) of the tangent line of the cutting edge at the cutting point P is the rotation at the cutting point P on the cut surface (X′Z plane) of the rotationally symmetric surface 1A.
- the state of being equal to the target inclination (second inclination) of the symmetry plane 1A is maintained.
- the cutting edge 2A is virtually divided into N blades having a linear shape. Therefore, the inclination of the tangent line of the cutting edge at the cutting point P can be replaced with the inclination of the cutting edge (blade 2i) at the cutting point P.
- FIG. 13 is an XY plan view for explaining the relationship between the cutting point on the rotationally symmetric surface and the tip of the cutting edge.
- the distance from the origin to the cutting point P on the X ′ axis is R sh (t).
- the X ′ axis makes an angle ⁇ (t) with respect to the X axis.
- FIG. 14 is an X′Z plan view for explaining the relationship between the cutting point on the rotationally symmetric surface and the tip of the cutting edge.
- the Z-axis coordinate of cutting point P is Z sh (t).
- the three-dimensional coordinates (X cut (t), Y cut (t), Z cut (t)) of the cutting point P can be expressed according to the following equations.
- the position of the point 3_t on the cutting edge 2A is equal to the position of the cutting point P.
- the coordinates (X (t), Y (t), Z (t)) of the tip 3_1 of the cutting edge 2A can be expressed according to the following equations.
- the coordinates (X (t), Y (t), Z (t)) of the tip 3_1 of the cutting edge 2A are the cutting points on the cutting plane of the rotationally symmetric surface 1A passing through the Z axis and the cutting point P. Is derived from the condition that the tangent slope (first slope) of the cutting edge 2A is equal to the target slope (second slope) of the tangent line of the rotationally symmetric surface 1A at the cutting point. Thereby, a rotationally symmetric surface can be processed according to the target shape. In order to understand this, the processing when the above conditions are not satisfied will be described below.
- FIG. 15 is a diagram illustrating an example in which the inclination of the tangent line of the cutting edge 2A is different from the target inclination of the tangent line of the rotationally symmetric surface 1A.
- the angle of the blade 2 i projected on the X′Z plane (cut surface) is ⁇ ′ 0 .
- the X-axis coordinate and Y′-axis coordinate of the blade 2 i in the vicinity of the cutting point P are expressed according to the following equations.
- Y ′ chip (t) 0.
- the R-axis coordinates of the point represented by the coordinates (X ′ chip (t 0 + ⁇ t), Y ′ chip (t 0 + ⁇ t)) are expressed according to the following equation.
- the angle ⁇ 0 ′ of the blade 2i in the X′Z plane is smaller than the ideal angle ⁇ s of the rotationally symmetric surface 1A ( ⁇ ′ 0 ⁇ s (t 0 )). In this state, when the blade 2i is fed, the rotationally symmetric surface 1A is excessively cut.
- the amount of change dt of t can be determined as follows. Before the cutting progress changes from t to (t + dt), the length of the cutting edge 2A used for cutting is dL chip . The length of the rotationally symmetric surface cut by the region of the length dL chip of the cutting edge 2A is defined as dL sh . dL chip and dL sh can be expressed according to the following equations:
- dL sh / dL chip can be used as one index of the wear amount at each position of the cutting edge 2A.
- the index dL sh / dL chip is equal at all positions of the cutting edge 2A. Therefore, for example, dt is determined so that dL sh and dL chip are uniform.
- the condition for making the minute length with respect to dt in each region uniform can be expressed according to the following equation. Thereby, the lifetime of a cutting edge can be lengthened.
- L chip is the entire length of the cutting edge 2A
- L sh is the entire length of the rotationally symmetric surface 1A.
- a simpler method is to define the cutting progress t as a variable that takes (N + 1) values t 0 , t 1 ,..., T N.
- the cutting edge 2A can be virtually divided into N blades.
- the coordinates of the tip 3_1 of the cutting edge 2A for each of (N + 1) pieces of t are obtained, and the trajectory connecting these points can be used as the trajectory of the tip 3_1 of the cutting edge 2A.
- the coordinates of the point 3_t X chip (t), Y chip (t), Z chip (t)
- R sh (t), Z sh (t)) is calculated.
- the cutting angle ⁇ (t) is obtained for each of t 0 , t 1 ,..., T N.
- Equation (13), (14), using (15), t t 0 , t 1, ⁇ , for each t N, determine the coordinates of the tip 3_1 of the cutting edge 2A.
- the trajectory of the cutting edge 2A is determined so that the tip 3_1 of the cutting edge 2A sequentially follows the positions indicated by these coordinates.
- the division number N can be determined from the cutting accuracy, the minimum feed amount of the cutting edge, and the like.
- FIG. 16 is a diagram illustrating a method for calculating the inclination of the cutting edge 2A on the XZ plane.
- FIG. 17 is a diagram illustrating a method for calculating the inclination of the cutting edge 2A on the XY plane.
- R arc is the radius of curvature of the cutting edge 2A.
- ⁇ arc is the central angle of the arcuate cutting edge 2A.
- L is the length of a straight line connecting the tip 3_1 of the cutting edge 2A and the rear end 3_5 of the cutting edge 2A.
- L corresponds to the length of the cutting edge 2A.
- R arc , ⁇ arc and L are known values.
- the cutting edge 2A is virtually divided into N blades on the XZ plane.
- the coordinates (X chip (i), 0, Z chip (i)) of the i-th division position (node) of the blade can be expressed as follows.
- ⁇ i corresponds to an angle obtained by dividing ⁇ arc into N equal parts.
- ⁇ i ⁇ arc ⁇ (i / N ⁇ 0.5)
- L is the length of the cutting edge 2A between the first end 3_1 and the second end 3_5.
- FIG. 18 is a diagram for explaining the coordinates of the nodes of the rotationally symmetric surface 1A.
- R-axis coordinate R sh (i) and the Z-axis coordinate Z sh (i) indicating the position of the node in the i-th region are expressed as follows. be able to.
- R mzx, R min, and H are values determined in advance by the design of the machine component 1.
- FIG. 19 is a diagram for explaining parameters of a rotationally symmetric surface for calculating the trajectory of the cutting edge.
- R sh is the radius of curvature of the rotationally symmetric surface 1A.
- the point O corresponds to the center of curvature of the rotationally symmetric surface 1A.
- D offset represents the distance of the point O from the Z axis. That is, D offset corresponds to the R-axis coordinate of the point O.
- ⁇ 1 is an angle formed by a straight line passing through the point O and parallel to the Z axis, and a straight line connecting the point O and the cutting end position (inner end point) P2.
- ⁇ 2 is an angle formed by a straight line passing through the point O and parallel to the Z axis, and a straight line connecting the point O and the cutting start position (outer end point) P1. Since R max , R min , H, and ⁇ s have already been described, the following description will not be repeated.
- D offset is a value predetermined by the design of the machine component 1.
- the R-axis coordinate R sh (i) and the Z-axis coordinate Z sh (i) of the i-th node can be expressed as follows.
- FIG. 20 is a diagram showing angles used for calculating the trajectory of the cutting edge.
- blade 2i forms an angle ⁇ (t i ) with respect to the X axis.
- the region 1i forms an angle ⁇ s (t i ) with respect to the X axis on the XZ plane.
- the range of the X-axis coordinates of the region 1i is from R sh (t i-1 ) to R sh (t i ).
- the value of R sh (t i) is smaller than R sh (t i-1) .
- ⁇ (t 0 ) ⁇ (t 1 )
- ⁇ (t) can be obtained in all of t 0 to t N.
- FIG. 21 is a flowchart showing a method of manufacturing a machine part according to the embodiment of the present invention. As shown in FIG. 21, the cutting tip 2 ⁇ / b> B is attached to the holder 2 in step S ⁇ b> 01. Furthermore, the holder 2 is attached to the manufacturing apparatus 100 (feed mechanism 106).
- step S10 the trajectory of the tip 3_1 of the cutting edge 2A is calculated.
- step S20 the rotationally symmetric surface 1A is processed by the cutting edge 2A. The processes in steps S10 and S20 are executed when the control unit 104 reads out the program stored in the storage unit 103.
- step S20 the control unit 104 positions the tip 3_1 of the cutting edge 2A at the cutting start position (step S21).
- the control unit 104 determines that the three-dimensional coordinates (X (t), Y (t), Z (t)) of the tip 3_1 of the cutting edge 2A are (R sh (t) cos ⁇ (t) ⁇ X chip ( t), R sh (t) sin ⁇ (t) ⁇ Y chip (t), Z sh (t) ⁇ Z chip (t)), so that the cutting edge 2A is sent (step S22).
- step S20 In the second and subsequent processing, the process of step S20 is repeated.
- the control unit 104 executes the processes of steps S21 and S22.
- step S20 Further steps necessary for manufacturing the machine part 1 may be performed after step S20 or before step S01. For example, after step S20, an inspection process for inspecting the machine part 1 may be performed.
- FIG. 22 is a flowchart showing details of the trajectory calculation process shown in FIG. This process is executed by the calculation unit 110 shown in FIG. Referring to FIG. 22, in step S ⁇ b> 11, calculation unit 110 determines the division number N. For example, N can be determined so that the feed amount of the cutting edge 2 ⁇ / b> A becomes a minimum value determined by the constraints of the manufacturing apparatus 100.
- t t 0 at each point of ⁇ t N, the 3_t point of the cutting edge 2A coordinates (X chip (t), Y chip (t), Z chip ( t)), the coordinates of the cutting point P (R sh (t), Z sh (t)), and the angle ⁇ (t) are calculated.
- Values known by the design of the machine component 1 such as the values of R max , R min , H, ⁇ s , D offset , and the coordinates of the point O are input to the arithmetic unit 110 via the input unit 101.
- the coordinates of the tip 3_1 of the cutting edge 2A at each point from 0 to t N are calculated. Thereby, the position on the orbit of the tip 3_1 of the cutting edge 2A is calculated.
- step S10 ends.
- step S20 shown in FIG. 16 may be performed following the process of step S10.
- the trajectory calculation process in step S10 may be executed independently of the process in step S20.
- the computer that executes the process of step S ⁇ b> 10 may be a computer provided outside the manufacturing apparatus 100.
- FIG. 23 is a diagram showing five regions of the cutting edge 2A for monitoring the locus of the cutting edge 2A.
- the regions 3_2, 3_3, and 3_4 of the cutting edge 2A are represented by dots. Note that the positions of the regions 3_2, 3_3, and 3_4 correspond to positions that divide the length between the front end 3_1 and the rear end 3_5 into four equal parts.
- the locus of the cutting edge 2A will be described in detail later.
- FIG. 24 is a diagram showing the result of calculating the processing of the curved surface with a curved cutting edge.
- “Chip position 1”, “Chip position 2”, “Chip position 3”, “Chip position 4” and “Chip position 5” of each curve in the graph are the tips 3_1 of the cutting edge 2A shown in FIG. , Region 3_2, region 3_3, region 3_4, and rear end 3_5, respectively.
- the shape of the rotationally symmetric surface is determined by the trajectory of each position of the cutting edge 2A (cutting tip 2B). Specifically, the shape of the rotationally symmetric surface in the RZ plane corresponds to the envelope of the trajectory drawn by each region of the cutting edge 2A on the RZ plane.
- the trajectory of each region of the cutting edge 2A can be determined according to R sh , R max , R min , ⁇ s regarding the rotationally symmetric surface, angles ⁇ , ⁇ , L, R chip and the division number N regarding the cutting edge.
- a design value of the machine part 1 can be used.
- the processed rotationally symmetric surface has a predetermined radius of curvature.
- FIG. 25 is a diagram showing the trajectory error ⁇ Z in the Z-axis direction based on the calculation result shown in FIG.
- the trajectory error ⁇ Z corresponds to a difference obtained by subtracting the Z-axis coordinate of the target rotationally symmetric surface from the Z-axis direction coordinate of the processed rotationally symmetric surface.
- ⁇ Z ⁇ 0 indicates that the Z-axis coordinate of the machined surface is smaller than the target surface. That is, ⁇ Z ⁇ 0 indicates that the processed surface is lower than the target height. That is, ⁇ Z ⁇ 0 indicates that the result of the processing is excessive cutting.
- ⁇ Z> 0 indicates that the processed surface is higher than the target height. That is, ⁇ Z> 0 indicates that the processing result is uncut.
- the trajectory at each of the five chip positions is depicted as a change in ⁇ Z with respect to the radial direction R.
- Five orbits corresponding to the respective chip positions 1 to 5 are arranged along the R-axis direction.
- the five tracks represent that the cutting edge is sent from the peripheral portion of the rotationally symmetric surface toward the center of the rotationally symmetric surface. Therefore, the track at the tip position 1 is the outermost track among the five tracks arranged along the R axis.
- the track at the tip position 5 is the innermost track among the five tracks arranged along the R axis.
- ⁇ Z of the processed rotationally symmetric surface can be represented by an envelope E of five trajectories. As shown in FIG. 25, ⁇ Z of the envelope E is almost zero. 24 and 25 show that the processing method according to this embodiment can accurately process a surface having a predetermined radius of curvature with the curved cutting edge 2A.
- FIG. 26 is a diagram showing a calculation result of processing of a linear rotating surface with a curved cutting edge.
- FIG. 27 is a diagram showing the trajectory error ⁇ Z in the Z-axis direction based on the calculation result shown in FIG. As shown in FIGS. 26 and 27, the rotationally symmetric surface is expressed as a straight line on the RZ plane of the rotationally symmetric surface. Furthermore, ⁇ Z of the envelope E of each track is almost zero.
- FIG. 26 and FIG. 27 show that the processing method according to this embodiment can accurately process the linear rotating surface with the curved cutting edge 2A.
- FIG. 28 is a schematic diagram of a linear cutting edge 2A.
- the regions 3_2, 3_3, and 3_4 of the cutting edge 2A are arranged on a straight line connecting the tip 3_1 of the cutting edge 2A and the rear end 3_5 of the cutting edge 2A.
- the positions of the regions 3_2, 3_3, and 3_4 correspond to the positions that divide the length L between the front end 3_1 and the rear end 3_5 into four equal parts.
- FIG. 29 is a diagram showing the result of calculating the processing of the curved rotating surface with a linear cutting edge.
- FIG. 30 is a diagram showing the trajectory error ⁇ Z in the Z-axis direction based on the calculation result shown in FIG. As shown in FIGS. 29 and 30, the rotationally symmetric surface has a predetermined radius of curvature. Further, ⁇ Z of the envelope E of each track is almost zero. 29 and 30 show that the processing method according to this embodiment can accurately process a curved rotating surface by the cutting edge 2A having a linear shape.
- FIG. 31 is a diagram showing a calculation result of processing of a linear rotating surface with a linear cutting edge.
- FIG. 32 is a diagram showing a trajectory error ⁇ Z in the Z-axis direction based on the calculation result shown in FIG. As shown in FIGS. 31 and 32, the rotationally symmetric surface is represented as a straight line on the RZ plane. Further, ⁇ Z of the envelope E of each track is almost zero.
- FIG. 31 and FIG. 32 show that the processing method according to this embodiment can accurately process the linear rotating surface with the cutting edge 2A having a linear shape.
- a rotationally symmetric surface having an arbitrary curvature can be processed by a cutting edge having an arbitrary curvature.
- the “arbitrary curvature” is not limited to a finite curvature.
- a straight line can be regarded as a figure having an infinite curvature. Therefore, the “arbitrary curvature” may be a finite curvature or an infinite curvature.
- the rotationally symmetric surface 1A may be a cylindrical side surface.
- the bus is parallel to the rotation axis (Z axis).
- the directions of the X axis, the Y axis, and the Z axis are not limited as shown in each drawing.
- the positive direction of each of the X axis, Y axis, and Z axis may be opposite to the direction shown in the drawing. It is also possible to exchange the X axis, the Y axis, and the Z axis with each other.
- the embodiment of the present invention can also be applied to machining of workpieces that are not limited to machine parts.
- 1 machine part 1A rotationally symmetric surface, 11-1N, 1i region (rotationally symmetric surface), 2 holder, 2A cutting edge, 21-2N blade, 2B cutting tip, 3_1 tip (cutting edge), 3_5 trailing edge (cutting edge) ) 3_t point (cutting edge), 3_2, 3_3, 3_4 area (cutting edge), 10 rotation axis, 100 manufacturing device, 101 input unit, 102 display unit, 103 storage unit, 104 control unit, 105 drive unit, 106 feed Mechanism, 110 arithmetic unit, E envelope (orbit), P cutting point, O point, P1 cutting start position, P2 cutting end position, S01, S10 to S15, S20 to S22 steps.
- E envelope orbit
Abstract
Description
国際公開第2001/043902号は、回転対称面として円柱側面を開示する。しかし回転対称面は円柱側面に限られない。さまざまな回転対称面を、切削によって精度よく加工することに対する顕在的あるいは潜在的なニーズが存在する。
[本開示の効果]
本開示によれば、切削によってさまざまな回転対称面を精度よく加工することができる。
最初に本発明の実施態様を列記して説明する。
X(t)=(Rsh(t)cosφ(t)-Xchip(t))
Y(t)=(Rsh(t)sinφ(t)-Ychip(t))
Z(t)=(Zsh(t)-Zchip(t))
に従って算出するステップを含む。座標(X(0),Y(0),Z(0))は切削開始位置に位置付けられた切れ刃の第1の端部の座標であり、かつ、三次元直交座標系の原点である。(Xchip(t),Ychip(t),Zchip(t))は、切削点において回転対称面に接する切れ刃の位置を、切れ刃の第1の端部を基準として表した座標である。(Xchip(1),Ychip(1),Zchip(1))は、切削終了位置に位置付けられた切れ刃の第2の端部の座標を表す。Rsh(t)は、Z軸上の回転中心から切削点までの距離に対応する、回転対称面の半径を表す。Zsh(t)は、回転中心のZ軸上の座標を表す。φ(t)は、XY平面上に投影された切削点と、XY平面の原点とを結ぶ直線が、X軸に対してなす角度である。切れ刃の第1の傾きを回転対称面の第2の傾きに等しくするために、φ(t)は、cos(φ(t)+β(t))/cosβ(t)=tanθ(t)/tanθs(t)という条件を満たす。θ(t)は、切れ刃のN個の領域のうち切削点に接するi番目の領域をXZ平面に投影したときに、i番目の領域がX軸に対してなす角度である。β(t)は、i番目の領域をXY平面に投影したときに、i番目の領域がX軸に対してなす角度である。θs(t)は、第2の傾きを表す角度である。
(4)好ましくは、切れ刃は、直線形を有する。tは、第1の端部と第2の端部との間の切れ刃の長さをN等分するように定められる。
(5)本発明の一態様に係る機械部品の製造装置は、上記(1)~(4)のいずれかに記載の機械部品の製造方法を実行する装置である。
X(t)=(Rsh(t)cosφ(t)-Xchip(t))
Y(t)=(Rsh(t)sinφ(t)-Ychip(t))
Z(t)=(Zsh(t)-Zchip(t))
に従って算出するステップを含む。座標(X(0),Y(0),Z(0))は回転対称面の切削開始位置に位置付けられた切れ刃の第1の端部の座標であり、かつ、三次元直交座標系の原点である。(Xchip(t),Ychip(t),Zchip(t))は、切削点において回転対称面に接する切れ刃の位置を、切れ刃の第1の端部を基準として表した座標である。(Xchip(1),Ychip(1),Zchip(1))は、回転対称面の切削終了位置に位置付けられた切れ刃の第2の端部の座標を表す。Rsh(t)は、Z軸上の回転中心から切削点までの距離に対応する、回転対称面の半径を表す。Zsh(t)は、回転中心のZ軸上の座標を表す。φ(t)は、XY平面上に投影された切削点と、XY平面の原点とを結ぶ直線が、X軸に対してなす角度である。Z軸および切削点を含む、回転対称面の切断面において、N個の領域の各々の切削点における接線の傾きに対応する第1の傾きを、切削点を通り回転対称面に接する接線の目標の傾きに対応する第2の傾きと等しくするために、φ(t)は、cos(φ(t)+β(t))/cosβ(t)=tanθ(t)/tanθs(t)という条件を満たす。θ(t)は、切れ刃のN個の領域のうち切削点に接するi番目の領域をXZ平面に投影したときに、i番目の領域がX軸に対してなす角度である。β(t)は、i番目の領域をXY平面に投影したときに、i番目の領域がX軸に対してなす角度である。θs(t)は、第2の傾きを表す角度である。
X(t)=(Rsh(t)cosφ(t)-Xchip(t))
Y(t)=(Rsh(t)sinφ(t)-Ychip(t))
Z(t)=(Zsh(t)-Zchip(t))
に従って算出するステップを含む。座標(X(0),Y(0),Z(0))は、回転対称面の切削開始位置に位置付けられた切れ刃の第1の端部の座標であり、かつ、三次元直交座標系の原点である。(Xchip(t),Ychip(t),Zchip(t))は、切削点において回転対称面に接する切れ刃の位置を、切れ刃の第1の端部を基準として表した座標である。(Xchip(1),Ychip(1),Zchip(1))は、回転対称面の切削終了位置に位置付けられた切れ刃の第2の端部の座標を表す。Rsh(t)は、Z軸上の回転中心から切削点までの距離に対応する、回転対称面の半径を表す。Zsh(t)は、回転中心のZ軸上の座標を表す。φ(t)は、XY平面上に投影された切削点と、XY平面の原点とを結ぶ直線が、X軸に対してなす角度である。Z軸および切削点を含む、回転対称面の切断面において、N個の領域の各々の切削点における接線の傾きに対応する第1の傾きを、切削点を通り回転対称面に接する接線の目標の傾きに対応する第2の傾きと等しくするために、φ(t)は、cos(φ(t)+β(t))/cosβ(t)=tanθ(t)/tanθs(t)という条件を満たす。θ(t)は、切れ刃のN個の領域のうち切削点に接するi番目の領域をXZ平面に投影したときに、i番目の領域がX軸に対してなす角度である。β(t)は、i番目の領域をXY平面に投影したときに、i番目の領域がX軸に対してなす角度である。θs(t)は、第2の傾きを表す角度である。
以下、図面に基づいて本発明の実施の形態を説明する。以下の図面において同一または相当する部分には同一の参照番号を付し、その説明は繰返さない。説明を分かりやすくするために、図面において、発明の構成要素の一部のみが示される場合がある。
図4は、この実施の形態に係る加工方法に使用される切れ刃の模式図である。図5は、この実施の形態に係る加工方法によって加工される回転対称面の平面模式図である。
(1)切れ刃の全体の使用
切れ刃2Aの軌道は、XYZ座標系によって表現される。X軸、Y軸およびZ軸の各々の方向は、図1に示されるように定義される。
図9は、回転対称面1Aと切れ刃2Aとが接触する位置の近傍での回転対称面1Aと切れ刃2AとをXZ平面上で表現したモデル図である。図10は、回転対称面1Aと切れ刃2Aとが接触する位置の近傍での回転対称面1Aと切れ刃2AとをXY平面上で表現したモデル図である。
上記座標(X’chip(t0+Δt),Y’chip(t0+Δt))で表される点のR軸座標は、以下の式に従って表される。
tの変化量dtは、次のようにして決定することができる。切削進行度がtから(t+dt)まで変化するまでの間に、切削に用いた切れ刃2Aの長さをdLchipとする。切れ刃2Aの長さdLchipの領域によって切削された回転対称面の長さをdLshとする。dLchipおよびdLshは、以下の式に従って表すことができる。
切れ刃2Aの点3_tの座標(Xchip(t),Ychip(t),Zchip(t))は、切れ刃2Aの形状に応じて、以下のように決定することができる。
Xchip(i)=L/2+Rarc×sinθi
Zchip(i)=-Rarc×cosθi+Rarc×cos(θchip×0.5)
一方、切れ刃2Aが直線形を有する場合には、切れ刃の長さがN等分される。i番目の節の座標(Xchip(i),0,Zchip(i))は、以下のように表すことができる。Lは、第1の端部3_1と第2の端部3_5との間の切れ刃2Aの長さである。
Zchip(i)=0
切れ刃2Aの先端3_1を中心として、XZ平面上で、切れ刃2Aを角度θ’回転させる。角度θ’と角度θ,βとの間には以下の関係が成立する。なお、角度θ’の大きさは図12に示された角度θ’に等しい。
図21は、本発明の実施の形態に係る機械部品の製造方法を示したフローチャートである。図21に示されるように、ステップS01において、切削チップ2Bがホルダ2に取り付けられる。さらに、ホルダ2が製造装置100(送り機構106)に取り付けられる。
(1)曲線形の切れ刃-曲線回転面
図23は、切れ刃2Aの軌跡をモニタするための切れ刃2Aの5つの領域を示した図である。図23において、先端3_1および後端3_5に加えて、切れ刃2Aの領域3_2,3_3,3_4が、点によって表される。なお、領域3_2,3_3,3_4の位置は、先端3_1と後端3_5との間の長さを4等分する位置に対応する。切れ刃2Aの軌跡については後に詳細に説明される。
図26は、曲線形の切れ刃による直線回転面の加工を計算した結果を示した図である。図27は、図26に示された計算結果に基づいて、Z軸方向の軌道誤差ΔZを表した図である。図26および図27に示されるように、回転対称面のRZ平面上では、回転対称面は直線として表現される。さらに各軌道の包絡線EのΔZは、ほぼ0である。図26および図27は、この実施の形態に係る加工方法が、曲線形状の切れ刃2Aによって直線回転面を精度よく加工できることを示す。
図28は、直線形の切れ刃2Aの模式図である。図28に示されるように、切れ刃2Aの先端3_1と切れ刃2Aの後端3_5とを結ぶ直線上に、切れ刃2Aの領域3_2,3_3,3_4が配置される。図23に示された曲線形状の切れ刃と同じく、領域3_2,3_3,3_4の位置は、先端3_1と後端3_5との間の長さLを4等分する位置に対応する。
図31は、直線形の切れ刃による直線回転面の加工を計算した結果を示した図である。図32は、図31に示された計算結果に基づいて、Z軸方向の軌道誤差ΔZを表した図である。図31および図32に示されるように、RZ平面上では、回転対称面は直線として表される。さらに各軌道の包絡線EのΔZはほぼ0である。図31および図32は、この実施の形態に係る加工方法が、直線形状を有する切れ刃2Aによって、直線回転面を精度よく加工できることを示す。
Claims (8)
- 回転対称面を有する機械部品の製造方法であって、
直線形または曲線形を有する切れ刃を前記回転対称面の切削点に接触させながら送ることによって、前記回転対称面を加工するステップを備え、
前記加工するステップは、
回転軸線をZ軸とし、前記回転対称面の半径の方向の軸をX軸とし、前記Z軸および前記X軸の両方に直交する軸をY軸とする三次元直交座標系を用いて、前記切れ刃の軌道を決定するステップと、
前記軌道に沿って前記切れ刃を送るステップとを含み、
前記決定するステップは、
(1)前記切れ刃の第1の端部が、前記回転対称面の切削開始位置に位置付けられ、
(2)前記切れ刃を分割するN個(Nは2以上の整数)の領域が前記回転対称面に順に接触し、
(3)前記Z軸および前記切削点を含む、前記回転対称面の切断面において、前記N個の領域の各々の前記切削点における接線の傾きに対応する第1の傾きが、前記切削点を通り前記回転対称面に接する接線の目標の傾きに対応する第2の傾きと等しく、かつ
(4)前記切れ刃の第2の端部が、前記回転対称面の切削終了位置に位置付けられる、
という条件に従って前記軌道を決定する、機械部品の製造方法。 - 前記軌道を決定するステップは、
0以上1以下の(N+1)個の値をとる変数tにより、前記切れ刃の前記第1の端部の座標(X(t),Y(t),Z(t))を
X(t)=(Rsh(t)cosφ(t)-Xchip(t))
Y(t)=(Rsh(t)sinφ(t)-Ychip(t))
Z(t)=(Zsh(t)-Zchip(t))
に従って算出するステップを含み、
座標(X(0),Y(0),Z(0))は前記切削開始位置に位置付けられた前記切れ刃の前記第1の端部の座標であり、かつ、前記三次元直交座標系の原点であり、
(Xchip(t),Ychip(t),Zchip(t))は、前記切削点において前記回転対称面に接する前記切れ刃の位置を、前記切れ刃の前記第1の端部を基準として表した座標であり、
(Xchip(1),Ychip(1),Zchip(1))は、前記切削終了位置に位置付けられた前記切れ刃の前記第2の端部の座標を表し、
Rsh(t)は、前記Z軸上の回転中心から前記切削点までの距離に対応する、前記回転対称面の前記半径を表し、
Zsh(t)は、前記回転中心の前記Z軸上の座標を表し、
φ(t)は、XY平面上に投影された前記切削点と、前記XY平面の原点とを結ぶ直線が、前記X軸に対してなす角度であり、前記切れ刃の前記第1の傾きを前記回転対称面の前記第2の傾きに等しくするために、φ(t)は、cos(φ(t)+β(t))/cosβ(t)=tanθ(t)/tanθs(t)という条件を満たし、
θ(t)は、前記切れ刃の前記N個の領域のうち前記切削点に接するi番目の領域をXZ平面に投影したときに、前記i番目の領域が前記X軸に対してなす角度であり、
β(t)は、前記i番目の領域をXY平面に投影したときに、前記i番目の領域が前記X軸に対してなす角度であり、
θs(t)は、前記第2の傾きを表す角度である、請求項1に記載の機械部品の製造方法。 - 前記切れ刃は、前記曲線形を有し、
tは、前記曲線形の曲率半径に従って決定される中心角をN等分するように定められる、請求項2に記載の機械部品の製造方法。 - 前記切れ刃は、前記直線形を有し、
tは、前記第1の端部と前記第2の端部との間の前記切れ刃の長さをN等分するように定められる、請求項2に記載の機械部品の製造方法。 - 請求項1から請求項4のいずれか1項に記載の機械部品の製造方法を実行する、機械部品の製造装置。
- 回転対称面の加工方法であって、
直線形または曲線形を有する切れ刃を前記回転対称面の切削点に接触させながら送ることによって、前記回転対称面を加工するステップを備え、
前記加工するステップは、
回転軸線をZ軸とし、前記回転対称面の半径の方向の軸をX軸とし、前記Z軸および前記X軸の両方に直交する軸をY軸とする三次元直交座標系を用いて、前記切れ刃の軌道を決定するステップと、
前記軌道に沿って前記切れ刃を送るステップとを含み、
前記決定するステップは、
(1)前記切れ刃の第1の端部が、前記回転対称面の切削開始位置に位置付けられ、
(2)前記切れ刃を分割するN個(Nは2以上の整数)の領域が前記回転対称面に順に接触し、
(3)前記Z軸および前記切削点を含む、前記回転対称面の切断面において、前記N個の領域の各々の前記切削点における接線の傾きに対応する第1の傾きが、前記切削点を通り前記回転対称面に接する接線の目標の傾きに対応する第2の傾きと等しく、かつ
(4)前記切れ刃の第2の端部が、前記回転対称面の切削終了位置に位置付けられる、
という条件に従って前記軌道を決定する、回転対称面の加工方法。 - 回転対称面を有する機械部品を製造するためのプログラムを記録した、コンピュータ読み取り可能な記録媒体であって、
前記プログラムがコンピュータに、
直線形または曲線形を有する切れ刃を前記回転対称面の切削点に接触させながら送ることによって、前記回転対称面を加工するステップを実行させ、
前記加工するステップは、
回転軸線をZ軸とし、前記回転対称面の半径の方向の軸をX軸とし、前記Z軸および前記X軸の両方に直交する軸をY軸とする三次元直交座標系を用いて、前記切れ刃の軌道を決定するステップと、
前記軌道に沿って前記切れ刃を送るステップとを含み、
前記軌道を決定するステップは、
0以上1以下の(N+1)個の値をとる変数tにより、前記切れ刃の第1の端部の座標(X(t),Y(t),Z(t))を
X(t)=(Rsh(t)cosφ(t)-Xchip(t))
Y(t)=(Rsh(t)sinφ(t)-Ychip(t))
Z(t)=(Zsh(t)-Zchip(t))
に従って算出するステップを含み、
座標(X(0),Y(0),Z(0))は前記回転対称面の切削開始位置に位置付けられた前記切れ刃の前記第1の端部の座標であり、かつ、前記三次元直交座標系の原点であり、
(Xchip(t),Ychip(t),Zchip(t))は、前記切削点において前記回転対称面に接する前記切れ刃の位置を、前記切れ刃の前記第1の端部を基準として表した座標であり、
(Xchip(1),Ychip(1),Zchip(1))は、前記回転対称面の切削終了位置に位置付けられた前記切れ刃の第2の端部の座標を表し、
Rsh(t)は、前記Z軸上の回転中心から前記切削点までの距離に対応する、前記回転対称面の前記半径を表し、
Zsh(t)は、前記回転中心の前記Z軸上の座標を表し、
φ(t)は、XY平面上に投影された前記切削点と、前記XY平面の原点とを結ぶ直線が、前記X軸に対してなす角度であり、
前記Z軸および前記切削点を含む、前記回転対称面の切断面において、前記N個の領域の各々の前記切削点における接線の傾きに対応する第1の傾きを、前記切削点を通り前記回転対称面に接する接線の目標の傾きに対応する第2の傾きと等しくするために、φ(t)は、cos(φ(t)+β(t))/cosβ(t)=tanθ(t)/tanθs(t)という条件を満たし、
θ(t)は、前記切れ刃の前記N個の領域のうち前記切削点に接するi番目の領域をXZ平面に投影したときに、前記i番目の領域が前記X軸に対してなす角度であり、
β(t)は、前記i番目の領域をXY平面に投影したときに、前記i番目の領域が前記X軸に対してなす角度であり、
θs(t)は、前記第2の傾きを表す角度である、コンピュータ読み取り可能な記録媒体。 - 回転対称面を有する機械部品を製造するためのプログラムであって、
前記プログラムが、コンピュータに、
直線形または曲線形を有する切れ刃を前記回転対称面の切削点に接触させながら送ることによって、前記回転対称面を加工するステップを実行させ、
前記加工するステップは、
回転軸線をZ軸とし、前記回転対称面の半径の方向の軸をX軸とし、前記Z軸および前記X軸の両方に直交する軸をY軸とする三次元直交座標系を用いて、前記切れ刃の軌道を決定するステップと、
前記軌道に沿って前記切れ刃を送るステップとを含み、
前記軌道を決定するステップは、
0以上1以下の(N+1)個の値をとる変数tにより、前記切れ刃の第1の端部の座標(X(t),Y(t),Z(t))を
X(t)=(Rsh(t)cosφ(t)-Xchip(t))
Y(t)=(Rsh(t)sinφ(t)-Ychip(t))
Z(t)=(Zsh(t)-Zchip(t))
に従って算出するステップを含み、
座標(X(0),Y(0),Z(0))は、前記回転対称面の切削開始位置に位置付けられた前記切れ刃の前記第1の端部の座標であり、かつ、前記三次元直交座標系の原点であり、
(Xchip(t),Ychip(t),Zchip(t))は、前記切削点において前記回転対称面に接する前記切れ刃の位置を、前記切れ刃の前記第1の端部を基準として表した座標であり、
(Xchip(1),Ychip(1),Zchip(1))は、前記回転対称面の切削終了位置に位置付けられた前記切れ刃の第2の端部の座標を表し、
Rsh(t)は、前記Z軸上の回転中心から前記切削点までの距離に対応する、前記回転対称面の前記半径を表し、
Zsh(t)は、前記回転中心の前記Z軸上の座標を表し、
φ(t)は、XY平面上に投影された前記切削点と、前記XY平面の原点とを結ぶ直線が、前記X軸に対してなす角度であり、
前記Z軸および前記切削点を含む、前記回転対称面の切断面において、前記N個の領域の各々の前記切削点における接線の傾きに対応する第1の傾きを、前記切削点を通り前記回転対称面に接する接線の目標の傾きに対応する第2の傾きと等しくするために、φ(t)は、cos(φ(t)+β(t))/cosβ(t)=tanθ(t)/tanθs(t)という条件を満たし、
θ(t)は、前記切れ刃の前記N個の領域のうち前記切削点に接するi番目の領域をXZ平面に投影したときに、前記i番目の領域が前記X軸に対してなす角度であり、
β(t)は、前記i番目の領域をXY平面に投影したときに、前記i番目の領域が前記X軸に対してなす角度であり、
θs(t)は、前記第2の傾きを表す角度である、プログラム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017538895A JP6679599B2 (ja) | 2015-09-09 | 2016-07-07 | 機械部品の製造方法、機械部品の製造装置、回転対称面の加工方法、記録媒体およびプログラム |
CN201680051732.0A CN107949448B (zh) | 2015-09-09 | 2016-07-07 | 用于制造机器部件的方法、用于制造机器部件的设备、用于加工旋转对称面的方法和记录介质 |
EP16844036.0A EP3348339A4 (en) | 2015-09-09 | 2016-07-07 | METHOD FOR PRODUCING A MACHINE PART, DEVICE FOR PRODUCING A MACHINE PART, PROCESSING METHOD FOR ROTATION SYMMETRIC SURFACE, RECORDING MEDIUM AND PROGRAM |
US15/758,036 US10543537B2 (en) | 2015-09-09 | 2016-07-07 | Method for manufacturing machine component, apparatus for manufacturing machine component, method for machining rotation symmetry plane, recording medium, and program |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015-177512 | 2015-09-09 | ||
JP2015177512 | 2015-09-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017043171A1 true WO2017043171A1 (ja) | 2017-03-16 |
Family
ID=58239367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/070144 WO2017043171A1 (ja) | 2015-09-09 | 2016-07-07 | 機械部品の製造方法、機械部品の製造装置、回転対称面の加工方法、記録媒体およびプログラム |
Country Status (5)
Country | Link |
---|---|
US (1) | US10543537B2 (ja) |
EP (1) | EP3348339A4 (ja) |
JP (1) | JP6679599B2 (ja) |
CN (1) | CN107949448B (ja) |
WO (1) | WO2017043171A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022075223A1 (ja) * | 2020-10-05 | 2022-04-14 | ファナック株式会社 | 制御装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3261792A1 (de) * | 2015-02-24 | 2018-01-03 | Vandurit GmbH Hartmetall und Diamantwerkzeuge | Vorrichtung, verfahren und schneidplatte zur spanenden bearbeitung eines rotierenden werkstücks |
CN108778579B (zh) * | 2016-03-04 | 2020-07-14 | 住友电工硬质合金株式会社 | 用于制造机器部件的方法、用于制造机器部件的设备、用于加工旋转对称面的方法、记录介质和程序 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006011300B3 (de) * | 2006-03-11 | 2007-09-27 | Felsomat Gmbh & Co. Kg | Drehmaschine und Verfahren zur Herstellung rotationssymmetrischer Flächen eines Werkstückes und Verwendung einer Drehmaschine |
JP2009241221A (ja) * | 2008-03-31 | 2009-10-22 | Mitsubishi Electric Corp | 切削加工装置および切削加工プログラム |
WO2014171244A1 (ja) * | 2013-04-16 | 2014-10-23 | 村田機械株式会社 | 工作機械および張出部付きワークの切削加工方法 |
WO2015079836A1 (ja) * | 2013-11-29 | 2015-06-04 | 村田機械株式会社 | 工作機械及び切削方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE244089T1 (de) | 1999-12-17 | 2003-07-15 | Boehringer Werkzeugmaschinen | Verfahren zur drallfreien spanenden bearbeitung von rotationssymmetrischen flächen |
DE10144649C5 (de) * | 2001-09-11 | 2008-11-13 | Boehringer Werkzeugmaschinen Gmbh | Verfahren zur drallfreien spanenden Bearbeitung von rotationssymmetrischen Flächen |
JP3963750B2 (ja) * | 2002-03-25 | 2007-08-22 | 日本電産サンキョー株式会社 | 曲面切削加工方法 |
CN101456080A (zh) * | 2008-12-25 | 2009-06-17 | 清华大学 | 一种用于精加工球形坯料的方法及装置 |
DE102009004337B3 (de) | 2009-01-12 | 2010-09-30 | Emag Holding Gmbh | Verfahren und Vorrichtung zur spanenden Bearbeitung eines um eine Mittelachse rotierenden Werkstücks |
MX2017009143A (es) | 2015-01-16 | 2018-05-07 | Sumitomo Electric Hardmetal Corp | Metodo para fabricar partes de maquinas, aparato para fabricar partes de maquinas, metodo de maquinado para superficie rotacionalmente simetrica, medio de grabacion y programa. |
-
2016
- 2016-07-07 EP EP16844036.0A patent/EP3348339A4/en active Pending
- 2016-07-07 JP JP2017538895A patent/JP6679599B2/ja active Active
- 2016-07-07 US US15/758,036 patent/US10543537B2/en active Active
- 2016-07-07 CN CN201680051732.0A patent/CN107949448B/zh active Active
- 2016-07-07 WO PCT/JP2016/070144 patent/WO2017043171A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006011300B3 (de) * | 2006-03-11 | 2007-09-27 | Felsomat Gmbh & Co. Kg | Drehmaschine und Verfahren zur Herstellung rotationssymmetrischer Flächen eines Werkstückes und Verwendung einer Drehmaschine |
JP2009241221A (ja) * | 2008-03-31 | 2009-10-22 | Mitsubishi Electric Corp | 切削加工装置および切削加工プログラム |
WO2014171244A1 (ja) * | 2013-04-16 | 2014-10-23 | 村田機械株式会社 | 工作機械および張出部付きワークの切削加工方法 |
WO2015079836A1 (ja) * | 2013-11-29 | 2015-06-04 | 村田機械株式会社 | 工作機械及び切削方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3348339A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022075223A1 (ja) * | 2020-10-05 | 2022-04-14 | ファナック株式会社 | 制御装置 |
Also Published As
Publication number | Publication date |
---|---|
EP3348339A1 (en) | 2018-07-18 |
US10543537B2 (en) | 2020-01-28 |
EP3348339A4 (en) | 2019-07-03 |
CN107949448A (zh) | 2018-04-20 |
US20180200802A1 (en) | 2018-07-19 |
CN107949448B (zh) | 2019-05-14 |
JPWO2017043171A1 (ja) | 2018-06-28 |
JP6679599B2 (ja) | 2020-04-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR20170138440A (ko) | 재료를 제거하는 것에 의해 공구를 가공하기 위한 방법 및 디바이스 | |
WO2017043171A1 (ja) | 機械部品の製造方法、機械部品の製造装置、回転対称面の加工方法、記録媒体およびプログラム | |
US7234899B2 (en) | Cutting tool having a wiper nose corner | |
US10960471B2 (en) | Method for manufacturing machine component, apparatus for manufacturing machine component, method for machining rotation symmetry plane, recording medium, and program | |
US20030232578A1 (en) | Curved surface cutting processing method | |
JP6734361B2 (ja) | 機械部品の製造方法、機械部品の製造装置、回転対称面の加工方法、記録媒体およびプログラム | |
JP6838056B2 (ja) | 切れ刃の軌道を補正する方法、記録媒体およびプログラム | |
JP6643087B2 (ja) | スパイラルベベルギヤまたはハイポイドギヤの製造方法 | |
JP5689138B2 (ja) | 総形溝の端面バリ除去方法及び面取り用総形回転切削工具 | |
EP4075216A1 (en) | Tool path generation method, tool path generation device, and machine tool control device | |
JP2005212030A (ja) | 輪帯光学素子用金型の製造方法 | |
JP6175096B2 (ja) | 機械部品の製造方法、機械部品の製造装置、回転対称面の加工方法、記録媒体およびプログラム | |
JP2005098752A (ja) | ブローチの形状測定装置 | |
JP6175082B2 (ja) | 機械部品の製造方法、機械部品の製造装置、回転対称面の加工方法、記録媒体およびプログラム | |
US11642748B2 (en) | Machining program creation method, workpiece machining method, and machine tool control device | |
JP2022065184A (ja) | エンドミル | |
JP2020069622A (ja) | 歯車加工シミュレーション装置及び加工用工具 | |
JP2006293175A (ja) | 輪帯光学素子の製造方法および輪帯光学素子用金型の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16844036 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2017538895 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15758036 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2016844036 Country of ref document: EP |