WO2016111354A1 - Form cutting tool - Google Patents

Form cutting tool Download PDF

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Publication number
WO2016111354A1
WO2016111354A1 PCT/JP2016/050514 JP2016050514W WO2016111354A1 WO 2016111354 A1 WO2016111354 A1 WO 2016111354A1 JP 2016050514 W JP2016050514 W JP 2016050514W WO 2016111354 A1 WO2016111354 A1 WO 2016111354A1
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WO
WIPO (PCT)
Prior art keywords
axial direction
tool
cutting tool
oil supply
tooth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/050514
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French (fr)
Japanese (ja)
Inventor
昌紘 安村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to KR1020177018116A priority Critical patent/KR101943779B1/en
Priority to MYPI2017702416A priority patent/MY185249A/en
Priority to CN201680004977.8A priority patent/CN107107201B/en
Publication of WO2016111354A1 publication Critical patent/WO2016111354A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/06—Profile cutting tools, i.e. forming-tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/10—Cutting tools with special provision for cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/12—Cooling and lubrication

Definitions

  • the present invention relates to an improvement of a total cutting tool for cutting an inner peripheral surface of an annular member.
  • Patent Document 1 discloses a ball bearing 1 as shown in FIG. 8 as a radial ball bearing for supporting various rotating parts such as bearing parts of various rotating machine devices.
  • the shape of the inner peripheral surface of the outer ring 2 or the inner ring 3 constituting such a ball bearing 1 is formed by, for example, cutting using a machine tool (such as a lathe) in which a total cutting tool is incorporated.
  • a machine tool such as a lathe
  • a cutting method for forming the outer ring raceway 4, the pair of shoulder portions 5a, 5b, and the pair of seal locking grooves 6a, 6b on the inner peripheral surface of the outer ring 2 will be described with reference to FIG. However, a brief explanation will be given.
  • the columnar workpiece 7 has one end in the axial direction (left end in FIG. 9) fixed to the main spindle (not shown) of the machine tool via a chuck device or the like.
  • a cylindrical portion 8 formed at the other axial end portion (the right end portion in FIG. 9) of the columnar workpiece 7 constitutes an annular member (workpiece) which is a workpiece of the cutting method.
  • the axial direction, the circumferential direction, and the radial direction refer to directions related to the total cutting tool in a state where the total cutting tool is fixed to the machine tool unless otherwise specified.
  • the overall cutting tool 10 has a cross-sectional shape of the inner peripheral surface of the outer ring 2 after processing (a virtual plane including the central axis of the outer ring 2) on a part of the outer peripheral surface near the tip in the axial direction (one axial end).
  • a tooth portion 11 having a contoured tooth tip along the cross-sectional shape) is formed.
  • the total cutting tool 10 is positioned such that the axial tip of the total cutting tool 10 is on the inner diameter side of the cylindrical portion 8. Move in the axial direction until At this time, the total cutting tool 10 is not rotating. In this state, the cutting oil is sprayed from the oil supply holes 13 opened at one end surface in the axial direction of the oil supply nozzle 12 and the fixed bush 9 as shown by arrows ⁇ 1 and ⁇ 2 in FIG. Then, the total cutting tool 10 is displaced radially outward (downward in FIG. 9) to bring the tooth portion 11 into contact with the inner peripheral surface of the cylindrical portion 8.
  • the inner peripheral surface of the cylindrical portion 8 is cut into a shape that follows the contour shape of the tooth tip of the tooth portion 11 (cross-sectional shape with respect to a virtual plane orthogonal to the axial direction), and the outer ring raceway 4 and the shoulder portion. 5a, 5b and seal locking grooves 6a, 6b are formed.
  • the oil supply nozzle 12 and the oil supply hole 13 are provided at the above-described positions, so that the cutting oil is shown at the tip of the tooth portion 11 of the total cutting tool 10 (indicated by ⁇ in FIG. 9). It is difficult to get to (part). For this reason, during cutting, the tip of the tooth portion 11 becomes hot, and there is a possibility that damage such as welding or wear may occur in the portion. When such damage occurs, it is necessary to regrind the tooth portion 11 or replace the tool, which increases the processing cost.
  • one end portion in the axial direction (back end portion in the axial direction) of the cylindrical portion 8 is closed by the bottom portion.
  • the present invention can suppress the occurrence of damage such as welding and wear at the tip of the tooth portion, and can easily discharge chips generated during processing to the outside of the annular member. It is invented to realize the structure of the die cutting tool.
  • the total cutting tool of the present invention is for rotating a work having an annular part at least in part and cutting the inner peripheral surface of the annular part in a state in which the rotation is prevented. .
  • one end in the axial direction of the annular portion of the workpiece (the end opposite to the side on which the total cutting tool is disposed) is integrated with the workpiece. It can be used suitably for the cutting method performed in the state closed by the provided bottom or the lid provided separately.
  • Such a total cutting tool of the present invention includes a shaft-shaped tool body and a tooth portion. The tool body is inserted into the annular portion at least in the axial direction at the time of processing.
  • the tooth portion is provided integrally or separately from the tool main body at the tip end in the axial direction of the tool main body, and has a tooth tip shape that matches the cross-sectional shape of the inner peripheral surface after processing of the annular portion. Have. And, in the tool body, an opening on one end side in the axial direction is opened on the surface facing the tip end side in the axial direction of the portion inserted into the annular portion of the tool body during processing, An oil supply passage for supplying cutting oil to the tooth portion is formed.
  • the tooth portion may be formed directly on the tool body, or a separate part may be connected and fixed to the tool body.
  • the tooth portion may be additionally provided at a part in the circumferential direction of the axial tip portion of the tool body.
  • at least a part of the opening on the one end side in the axial direction of the oil supply passage may be additionally opened on the tip surface of the tool body.
  • the oil supply passage may be additionally formed in a state where at least a part in the axial direction is opened radially outward.
  • the cross-sectional shape regarding the virtual plane orthogonal to the axial direction of the oil supply passage may be formed in a quadrangular shape.
  • the oil supply passage is formed in the tool main body of the total cutting tool, and the opening on one end side in the axial direction of the oil supply passage is formed in the annular portion of the workpiece during machining of the tool main body. An opening is made in the surface facing the tip end side in the axial direction of the portion inserted inside.
  • the cutting oil injected from the oil supply passage is more likely to reach the tip of the tooth portion than in the case of the conventional method described above.
  • the annular portion of the workpiece in which one end portion in the axial direction is closed by the bottom portion is cut.
  • the cutting oil sprayed from the opening on one end side in the axial direction of the oil supply passage causes a flow in a direction opposite to the direction of the injection (a direction toward the axial opening of the annular portion of the workpiece) by the bottom portion. .
  • chips generated during processing are easily discharged to the outside of the annular portion of the workpiece.
  • the removal work for removing the chips after processing is unnecessary, or even if the removal work is performed, simple work can be performed, and work efficiency can be improved. Furthermore, it can suppress that the cyclic
  • FIG. 1 The figure seen from the front end side of the total type cutting tool which shows the 1st example of embodiment of this invention. Similarly, it is a figure for demonstrating the cutting method using a general-type cutting tool, Comprising: The figure (a) which shows the state before a process, and the figure (b) which shows the state after a process.
  • the figure similar to FIG. 1 which shows the 2nd example of embodiment of this invention.
  • the figure similar to FIG. 1 which shows the 3rd example of embodiment of this invention.
  • A) And (b) is a figure similar to FIG. 2 which shows the 4th example of embodiment of this invention.
  • FIG. 2 which shows the 5th example of embodiment of this invention.
  • FIG.2 (b) shows the 6th example of embodiment of this invention.
  • Sectional drawing which shows the structure of the ball bearing provided with the outer ring
  • the general cutting tool 10a of this example is used for cutting for processing the inner peripheral surface of the annular portion of the workpiece into a desired shape. Specifically, for example, an outer ring raceway 4, a pair of shoulder portions 5a and 5b, and a pair of seal locking grooves 6a, on the inner peripheral surface of the outer ring 2 constituting the ball bearing 1 as shown in FIG. It is used for cutting to form 6b.
  • the structure of the general cutting tool 10a of this example will be described, and then a cutting method performed by incorporating the general cutting tool 10a of this example into a machine tool (for example, a lathe) will be described.
  • the total cutting tool 10a of this example is a cutting for forming the outer ring 2 by forming the outer ring raceway 4, both shoulder parts 5a, 5b, and both seal locking grooves 6a, 6b on the inner peripheral surface of the annular part of the workpiece.
  • it is made of high-speed steel (SKH51, high-speed steel), cemented carbide or the like.
  • Such an overall cutting tool 10 a includes a tool body 14 and a tooth portion 15.
  • the tool body 14 includes a proximal end side shaft portion 16 and a distal end side shaft portion 17.
  • the proximal end side shaft portion 16 is formed in a substantially cylindrical shape.
  • the distal end side shaft portion 17 is smaller in diameter than the proximal end side shaft portion 16, and from the substantially central portion of one axial end surface (the surface in FIG. 1, the left end surface in FIG. 2) of the proximal end side shaft portion 16. It is formed in a state protruding in one axial direction (the front side in FIG. 1 and the left side in FIG. 2).
  • the shape of the distal end side shaft portion 17 is not particularly limited as long as it is a shape capable of forming a tooth portion 15 described later, and is appropriately determined in consideration of rigidity and the like. In the case of this example, the distal end side shaft portion 17 is formed in a state of becoming thinner (a cross-sectional area becomes smaller) toward the distal end.
  • the tip end surface of the tip end side shaft portion 17 is a flat surface 18 having a substantially semicircular shape (tiltball shape) when viewed from one axial direction.
  • the tooth portion 15 is directly formed in a part in the circumferential direction of the tip portion of the tip side shaft portion 17. Specifically, the tooth portion 15 is one end edge in the circumferential direction of the arc portion 19 of the flat surface 18 in the circumferential direction of the distal end side shaft portion 17 (the counterclockwise side edge in FIG. It is formed at a position (position overlapping in the axial direction) aligned with a position indicated by Y in FIG. Such a tooth portion 15 is brought into contact with the inner peripheral surface of the annular portion of the rotating workpiece (rotating clockwise in FIG. 1) during processing, and this inner peripheral surface is brought into contact with the inner peripheral surface.
  • the contour shape of the tooth tip of the tooth portion 15 (cross-sectional shape related to a virtual plane including the central axis of the tip side shaft portion 17) is formed so as to be copied onto the inner peripheral surface of the annular portion of the workpiece. Is.
  • the contour shape of the tooth tip of the tooth portion 15 has a shape (a shape along the shape) that matches the cross-sectional shape of the inner peripheral surface of the outer ring 2.
  • a pair of seal groove forming portions 20a for forming both seal locking grooves 6a, 6b of the outer ring 2 at portions near both axial ends of the tooth tip of the tooth portion 15. , 20b are provided.
  • a track forming portion 21 for forming the outer ring raceway 4 of the outer ring 2 is provided at the axial center portion of the tooth tip of the tooth portion 15.
  • a pair of shoulders 5a and 5b for the outer ring 2 are formed between both axial edges of the track forming part 21 and the axially central edges of both seal groove forming parts 20a and 20b.
  • Shoulder forming portions 22a and 22b are provided.
  • the outer peripheral surface of the distal end side shaft portion 17 is aligned with the circular arc portion 19 in the circumferential direction (position overlapping with the axial direction) and aligned with the tooth tip of the tooth portion 15 in the axial direction.
  • a tooth spare part At the position to be overlapped (position overlapping with respect to the circumferential direction), a tooth spare part (the two-dot chain line X representing the shape after re-polishing in FIG. 1 and FIG. And the arc portion 19).
  • a long oil supply passage 23 is formed in the axial direction.
  • the oil supply passage 23 has a circular cross-sectional shape with respect to a virtual plane orthogonal to the axial direction.
  • the cross-sectional shape regarding the virtual plane orthogonal to the axial direction of the oil supply passage is not particularly limited.
  • the cross-sectional shape can be formed into an elliptical shape, a rectangular shape, or the like.
  • path 23 is formed in the half part of the flat surface 18 on the opposite side to the tooth
  • the opposite half portion in the circumferential direction connects the center C 19 in the circumferential direction of the arc portion 19 of the flat surface 18 and the center of curvature (center of the virtual circle) O 19 including the arc portion 19.
  • the line segment d 19 it refers to the half portion on the opposite side of the tooth portion 15 (left half portion in FIG. 1).
  • the outer ring raceway 4 the shoulders 5a, 5b, and both seal locking grooves of the outer ring 2 are formed on the inner peripheral surface of the annular part of the workpiece having at least a part of the annular part.
  • work can be selected suitably.
  • the contour shape of the tooth tip of the tooth portion 15 is appropriately changed according to the shape formed on the inner peripheral surface of the annular portion of the workpiece.
  • the cutting method of this example uses a workpiece 24 formed by forming a cylindrical portion 25 at the other axial end of a columnar material.
  • the cylindrical portion 25 corresponds to the annular portion of the present invention.
  • the cylindrical portion 25 is formed at the stage of the previous process. In such a cylindrical portion 25, one end surface in the axial direction is closed by the bottom portion 26.
  • the other axial side surface (the right side surface in FIG. 2) of the bottom portion 26 is formed in a conical surface shape that is inclined in one axial direction toward the inner side in the radial direction. The shape of the other side surface in the axial direction of the bottom portion 26 can be changed as appropriate.
  • it may be a partial spherical shape that is recessed in one axial direction as it goes radially inward.
  • One end of the workpiece 24 in the axial direction is fixed to a spindle (not shown) of the machine tool via a chuck device or the like.
  • a total cutting tool 10a is disposed on the other axial side of the cylindrical portion 25.
  • the base end portion of the base end side shaft portion 16 is supported and fixed to a part of the machine tool via a fixing bush 9.
  • the total cutting tool 10a When performing the cutting process, as shown in FIG. 2A, the total cutting tool 10a is moved in the axial direction of the total cutting tool 10a while the workpiece 24 (cylindrical portion 25) is rotated. The portion (one axial end portion) is moved in one axial direction until it is located on the inner diameter side of the cylindrical portion 25. At this time, the total cutting tool 10a is not rotating. In this state, the cutting oil from the opening of the axial end of the oil supply passage 23, keep the injection as indicated by the arrow alpha 3 in FIG.
  • a part of the cutting oil injected from the opening on one end side in the axial direction of the oil supply passage 23 moves in the radial direction of the bottom portion 26 along the other side surface in the axial direction of the bottom portion 26, and is cylindrical. While flowing along the inner peripheral surface of the cylindrical portion 25, the cylindrical portion 25 flows out from the opening on the other axial end side. Then, the total cutting tool 10 a is displaced (cut) in the radially outward direction (downward in FIG. 2), and the tooth portion 11 is brought into contact with the inner peripheral surface of the cylindrical portion 25.
  • the inner peripheral surface of the cylindrical portion 25 is shaved into a shape along the contour shape of the tooth tip of the tooth portion 11 (cross-sectional shape related to a virtual plane including the central axis of the distal end side shaft portion 17).
  • the track 4, both shoulders 5a and 5b, and both seal locking grooves 6a and 6b are formed.
  • the total cutting tool 10a of this example is displaced only in the radial direction during processing (cutting). As described above, the total cutting tool 10a is displaced in the axial direction when the tip end in the axial direction of the total cutting tool 10a is positioned on the inner diameter side of the cylindrical portion 25 and after machining. This is only when the axial tip of the die cutting tool 10 a is retracted from the inner diameter side of the cylindrical portion 25. After the cutting process is completed, the processed cylindrical portion 25 is cut off at a position indicated by ⁇ in FIG. 2B, and the process proceeds to the next step.
  • the overall cutting tool 10a of the present example configured as described above, it is possible to suppress the occurrence of damage such as welding or wear at the tip of the tooth portion 15 when performing the cutting method as described above.
  • the tool body 14 of the total cutting tool 10a is formed with an oil supply passage 23 having an opening on one end side in the axial direction and opening on the flat surface 18 of the tool body 14.
  • the cutting oil sprayed from the oil supply passage 23 can easily reach the tip of the tooth portion 15 as compared with the conventional cutting method.
  • the axial end of the oil supply passage 23 on the one end side in the axial direction is provided.
  • the cutting oil sprayed in one axial direction from the opening is guided to the other side surface in the axial direction of the bottom portion 26 and is in the direction opposite to the direction of this spraying (the other in the axial direction toward the opening of the cylindrical portion 25). ) Is triggered. For this reason, chips generated during processing are easily discharged to the outside of the cylindrical portion 25. As a result, the removal work for removing chips after processing becomes unnecessary, or a simple work can be performed even when the removal work is performed, and the work efficiency can be improved. Furthermore, it can suppress that the cylindrical part 25 after a process is damaged by a chip.
  • the other side surface in the axial direction of the bottom portion 26 is formed in a conical surface shape that is inclined in one axial direction toward the inner side in the radial direction. For this reason, the cutting oil sprayed from the opening on one axial end side of the oil supply passage 23 can be moved in the radial direction of the bottom portion 26 along the other axial side surface of the bottom portion 26. Therefore, it is possible to easily supply the cutting oil to the tip portion of the tooth portion 15 (the portion indicated by ⁇ in FIG. 2B).
  • the opening on one end side in the axial direction of the oil supply passage 23 is formed in the half of the flat surface 18 opposite to the tooth portion 15 in the circumferential direction. For this reason, it is possible to secure a margin for re-polishing a plurality of times between the opening on the one end side in the axial direction of the oil supply passage 23 and the tooth portion 15.
  • the arc portion 19 of the flat surface 18 can ensure a large length L 19 in the circumferential direction of a portion existing between the opening portion on one end side in the axial direction of the oil supply passage 23 and the tooth portion 15. As a result, the number of times that the tooth portion 15 can be re-polished can be sufficiently secured, and the processing cost can be reduced.
  • the re-polishing means that the tooth portion 15 is polished and reused as indicated by a two-dot chain line X in FIG. 1 when the tooth portion 15 is damaged or the sharpness is deteriorated. Therefore, as this re-polishing is repeated, the position of the tooth portion 15 approaches the opening on the one end side in the axial direction.
  • the opening on one end side in the axial direction of the oil supply passage 23a is formed at the end of the flat surface 18 of the tip end side shaft portion 17 opposite to the tooth portion 15 in the circumferential direction. , Formed in a portion that hangs from the flat surface 18 in a position radially outward.
  • the part formed in the base end side axial part 16 of the tool main body 14 among the oil supply path 23a is formed in the through-hole shape which only the axial direction both ends opened.
  • the part formed in the front end side shaft portion 17 of the tool main body 14 in the oil supply passage 23a is formed in a concave groove shape having both ends in the axial direction and radially outward.
  • the arc portion 19 of the flat surface 18 has a length in the circumferential direction of a portion existing between the opening portion on one end side in the axial direction of the oil supply passage 23a and the tooth portion 15. It can be ensured larger than in the case of the first example of the embodiment described above. As a result, the number of times that the tooth portion 15 can be re-polished can be sufficiently secured, and the processing cost can be reduced.
  • Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.
  • FIG. 1 A third example of the embodiment of the present invention will be described with reference to FIG.
  • the position Y where the tooth portion 15 is formed in the circumferential direction on the outer peripheral surface of the base end side shaft portion 16 and the distal end side shaft portion 17 constituting the tool body 14;
  • An oil supply groove 27 having openings at both ends in the axial direction and radially outward is formed in a portion on the substantially opposite side.
  • Such an oil supply groove 27 has a quadrangular cross-sectional shape (a shape viewed from the axial direction) with respect to a virtual plane orthogonal to the central axis (axial direction) of the distal end side shaft portion 17.
  • this oil supply groove 27 corresponds to the oil supply passage of the present invention.
  • the other end in the axial direction of the oil supply groove 27 is open to the other end surface in the axial direction of the base end side shaft portion 16.
  • the arc portion 19 of the flat surface 18 includes an opening portion on one end side in the axial direction of the oil supply groove 27 and a tooth portion.
  • the length in the circumferential direction of the portion existing between 15 can be secured larger than in the case of the first example of the embodiment described above.
  • the number of times that the tooth portion 15 can be re-polished can be sufficiently secured, and the processing cost can be reduced.
  • Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.
  • FIG. 5 shows another example of a cutting method that is performed by incorporating any one of the first to third examples of the overall cutting tools 10a, 10b, and 10c in the machine tool.
  • the total cutting tool 10a of the first example of the embodiment described above is used.
  • the outer ring raceway 4 the shoulders 5a, 5b, and both seals of the outer ring 2 are provided on the inner peripheral surface of the annular member. This is a cutting method for forming the grooves 6a and 6b.
  • the other half in the axial direction of the cylindrical workpiece 28 having a larger dimension in the axial direction than the outer ring 2 corresponds to the annular portion of the present invention.
  • a workpiece 28 is open at both ends in the axial direction. Therefore, in the case of this example, the opening on one end side in the axial direction of the work 28 is supported by a lid 29 constituting a part of a chuck device for supporting and fixing the work 28 to a main shaft (not shown) of the machine tool. It is blocking.
  • the structure of the lid is not particularly limited as long as it is a shape that closes one end of the cylindrical workpiece 28 in the axial direction.
  • the other side surface in the axial direction of the lid 29 can be formed in a conical surface like the other side surface in the axial direction of the bottom portion 26 of the first example of the embodiment described above.
  • Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.
  • FIG. 6 shows another example of a cutting method that is performed by incorporating any one of the first to third examples of the overall cutting tools 10a, 10b, and 10c in the machine tool.
  • the total cutting tool 10a of the first example of the embodiment described above is used.
  • the cutting method of this example is similar to the first example of the above-described embodiment, on the inner peripheral surface of the annular portion of the workpiece, the outer ring raceway 4 of the outer ring 2, both shoulder portions 5a, 5b, and both seals. This is a cutting method for forming the locking grooves 6a and 6b.
  • the workpiece 28a having the same axial dimension as the axial dimension of the outer ring 2 corresponds to the annular portion of the present invention.
  • Such a workpiece 28a is supported and fixed to the spindle of the machine tool by externally fixing and fixing the grip portion 30 of the chuck device to the outer peripheral surface thereof.
  • Such a workpiece 28a is open at both ends in the axial direction. Therefore, in the case of this example, the opening on the one end side in the axial direction of the work 28 a is closed by the lid 31.
  • the lid body 31 has a bottomed cylindrical shape including a cylindrical portion 32 and a bottom portion 33 that closes one axial end portion of the cylindrical portion 32.
  • Such a lid 31 is supported by a part of the machine tool in a state where the other axial end surface (the right end surface in FIG. 6) of the cylindrical portion 32 is in contact with the one axial end surface of the workpiece 28a.
  • the other axial side surface of the lid body 31 is formed in a flat surface shape.
  • the other side surface in the axial direction of the lid 31 can be formed in a conical surface shape like the other side surface in the axial direction of the bottom portion 26 of the first example of the embodiment described above.
  • Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.
  • the total cutting tool 10d of this example is a cutting process for forming a pair of chamfered portions 34a and 34b at both axial ends of the inner peripheral surface of the inner ring 3 constituting the ball bearing 1 as shown in FIG. Used for.
  • the tooth portion 15a constituting the total cutting tool 10d of the present example is formed with a pair of chamfer forming portions 35a and 35b for forming double-side chamfered portions 34a and 34b at both ends in the axial direction.
  • a portion between the double-sided forming portions 35a and 35b in the axial direction is formed with a flat portion 36 whose outer diameter does not change in the axial direction.
  • the flat portion 36 cuts the portion between the double-sided chamfered portions 34a and 34b on the inner peripheral surface of the inner ring 3. Since the cutting method method using the general cutting tool 10d as described above is substantially the same as that in the first example of the above-described embodiment, the description thereof is omitted. Other configurations and operations / effects are also the same as in the first example of the embodiment described above.
  • the total cutting structure of each example of the above-described embodiment can be used as appropriate.
  • the object of the general cutting tool of the present invention and the cutting method using the general cutting tool is not limited to the outer ring and the inner ring of the ball bearing described in each example of the embodiment described above, but various annular members. Can be targeted.
  • path can also be formed in parts other than the front end surface of a tool main body.
  • the total type cutting tool of each example of embodiment mentioned above employ
  • gear part provided separately to a tool main body can also be employ

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

A form cutting tool (10a) is provided with a tool body (14) and a tooth section (15) formed on a circumferential portion near the tip of the leading end shaft section (17) of the tool body (14). An oiling passage (23), of which the opening at one end in the axial direction opens onto a flat surface (18) that is the leading end face of the leading end shaft section (17), is formed in the tool body (14). During cutting, cutting oil is supplied from the opening at the one end of the oiling passage (23) in the axial direction. As a result, it is possible to limit the occurrence of damage such as deposits or abrasion on the leading edge of the tooth section (15) and discharge of chips generated during machining to the outside of a circular member is facilitated.

Description

総型切削工具Total cutting tool

　本発明は、環状部材の内周面に切削加工を施す為の総型切削工具の改良に関する。 The present invention relates to an improvement of a total cutting tool for cutting an inner peripheral surface of an annular member.

　各種回転機械装置の軸受部等、各種回転部分を支持する為のラジアル玉軸受として、特許文献１には、図８に示す様な玉軸受１が記載されている。この様な玉軸受１を構成する外輪２又は内輪３の内周面の形状は、例えば、総型切削工具が組み込まれた工作機械（旋盤等）を使用した切削加工により形成される。以下、外輪２の内周面に、外輪軌道４、１対の肩部５ａ、５ｂ、及び１対のシール係止溝６ａ、６ｂを形成する為の切削加工方法に就いて、図９を参照しつつ簡単に説明する。 Patent Document 1 discloses a ball bearing 1 as shown in FIG. 8 as a radial ball bearing for supporting various rotating parts such as bearing parts of various rotating machine devices. The shape of the inner peripheral surface of the outer ring 2 or the inner ring 3 constituting such a ball bearing 1 is formed by, for example, cutting using a machine tool (such as a lathe) in which a total cutting tool is incorporated. Hereinafter, a cutting method for forming the outer ring raceway 4, the pair of shoulder portions 5a, 5b, and the pair of seal locking grooves 6a, 6b on the inner peripheral surface of the outer ring 2 will be described with reference to FIG. However, a brief explanation will be given.

　図９に示すように、円柱状のワーク７は、その軸方向一端部（図９の左端部）が、工作機械の主軸（図示省略）に、チャック装置等を介して固定されており、円柱状のワーク７の軸方向他端部（図９の右端部）に形成された円筒状部分８が、切削加工方法の被加工物である環状部材（ワーク）を構成している。尚、軸方向、周方向、及び径方向とは、特に断らない限り、工作機械に総型切削工具を固定した状態に於ける、この総型切削工具に関する各方向を言う。 As shown in FIG. 9, the columnar workpiece 7 has one end in the axial direction (left end in FIG. 9) fixed to the main spindle (not shown) of the machine tool via a chuck device or the like. A cylindrical portion 8 formed at the other axial end portion (the right end portion in FIG. 9) of the columnar workpiece 7 constitutes an annular member (workpiece) which is a workpiece of the cutting method. The axial direction, the circumferential direction, and the radial direction refer to directions related to the total cutting tool in a state where the total cutting tool is fixed to the machine tool unless otherwise specified.

　円筒状部分８の軸方向他方側には、工作機械の一部に固定ブッシュ９を介して支持固定された総型切削工具１０が配置されている。総型切削工具１０は、軸方向先端（軸方向一端）寄り部分の外周面の円周方向一部に、加工後の外輪２の内周面の断面形状（外輪２の中心軸を含む仮想平面に関する断面形状）に沿う輪郭形状の歯先を有する歯部１１が形成されている。 On the other side of the cylindrical portion 8 in the axial direction, a total cutting tool 10 supported and fixed by a part of the machine tool via a fixing bush 9 is disposed. The overall cutting tool 10 has a cross-sectional shape of the inner peripheral surface of the outer ring 2 after processing (a virtual plane including the central axis of the outer ring 2) on a part of the outer peripheral surface near the tip in the axial direction (one axial end). A tooth portion 11 having a contoured tooth tip along the cross-sectional shape) is formed.

　加工の際には、ワーク７（円筒状部分８）を回転させた状態で、総型切削工具１０を、この総型切削工具１０の軸方向先端部が、円筒状部分８の内径側に位置するまで軸方向に移動させる。この際、総型切削工具１０は回転していない。又、この状態で、給油ノズル１２及び固定ブッシュ９の軸方向一端面に開口した給油孔１３から切削油を、図９に矢印α１、α２で示す様に噴射しておく。そして、総型切削工具１０を径方向外方（図９の下方）に変位させて、歯部１１を円筒状部分８の内周面に当接させる。すると、この円筒状部分８の内周面が、歯部１１の歯先の輪郭形状（軸方向に直交する仮想平面に関する断面形状）に沿う様な形状に削られて、外輪軌道４、肩部５ａ、５ｂ、及びシール係止溝６ａ、６ｂが形成される。 At the time of machining, with the workpiece 7 (cylindrical portion 8) rotated, the total cutting tool 10 is positioned such that the axial tip of the total cutting tool 10 is on the inner diameter side of the cylindrical portion 8. Move in the axial direction until At this time, the total cutting tool 10 is not rotating. In this state, the cutting oil is sprayed from the oil supply holes 13 opened at one end surface in the axial direction of the oil supply nozzle 12 and the fixed bush 9 as shown by arrows α 1 and α 2 in FIG. Then, the total cutting tool 10 is displaced radially outward (downward in FIG. 9) to bring the tooth portion 11 into contact with the inner peripheral surface of the cylindrical portion 8. Then, the inner peripheral surface of the cylindrical portion 8 is cut into a shape that follows the contour shape of the tooth tip of the tooth portion 11 (cross-sectional shape with respect to a virtual plane orthogonal to the axial direction), and the outer ring raceway 4 and the shoulder portion. 5a, 5b and seal locking grooves 6a, 6b are formed.

　以上の様な切削加工方法の場合、前述の位置に給油ノズル１２及び給油孔１３を設けている為、切削油が、総型切削工具１０の歯部１１の先端部（図９にβで示す部分）にまで行き渡り難い。この為、切削加工中に、この歯部１１の先端部が高温となり、当該部分に溶着や摩耗等の損傷が生じる可能性がある。この様な損傷が生じた場合には、歯部１１の再研磨、或いは工具の交換が必要となり、加工コストが嵩んでしまう。又、上述の切削加工方法の場合、円筒状部分８の軸方向一端部（軸方向奥端部）が底部により塞がれている。この為、前述の様な状態で切削油を噴射していると、切りくず（切り粉、切り滓）が、円筒状部分８の内径側の軸方向一端側に押し込まれて、外部に排出され難い。この結果、加工後に、切りくずを取り除く為の作業が必要となり、作業効率が低下してしまう。又、切りくずが残っていると、加工後の円筒状部分８を傷つけてしまう可能性もある。 In the case of the cutting method as described above, the oil supply nozzle 12 and the oil supply hole 13 are provided at the above-described positions, so that the cutting oil is shown at the tip of the tooth portion 11 of the total cutting tool 10 (indicated by β in FIG. 9). It is difficult to get to (part). For this reason, during cutting, the tip of the tooth portion 11 becomes hot, and there is a possibility that damage such as welding or wear may occur in the portion. When such damage occurs, it is necessary to regrind the tooth portion 11 or replace the tool, which increases the processing cost. In the case of the above-described cutting method, one end portion in the axial direction (back end portion in the axial direction) of the cylindrical portion 8 is closed by the bottom portion. For this reason, when the cutting oil is sprayed in the state as described above, chips (swarf and swarf) are pushed into one axial end on the inner diameter side of the cylindrical portion 8 and discharged to the outside. hard. As a result, after machining, an operation for removing chips is required, and work efficiency is lowered. Further, if chips remain, the processed cylindrical portion 8 may be damaged.

日本国特開２０１１－０９４７６３号公報Japanese Unexamined Patent Publication No. 2011-094763

　本発明は、上述の様な事情に鑑みて、歯部の先端部に溶着や摩耗等の損傷が生じる事を抑制できると共に、加工中に生じる切りくずを、環状部材の外部に排出し易い総型切削工具の構造を実現すべく発明したものである。 In view of the circumstances as described above, the present invention can suppress the occurrence of damage such as welding and wear at the tip of the tooth portion, and can easily discharge chips generated during processing to the outside of the annular member. It is invented to realize the structure of the die cutting tool.

　本発明の総型切削工具は、少なくとも一部に環状部を有するワークを回転させると共に、自身の回転を阻止された状態で、前記環状部の内周面に切削加工を施す為のものである。
　具体的には、例えば、本発明の総型切削工具は、前記ワークの環状部の軸方向一端部（総型切削工具が配置された側と反対側の端部）が、前記ワークと一体に設けられた底部、又は別体に設けられた蓋体により塞がれた状態で行う切削加工方法に好適に使用する事ができる。
　この様な本発明の総型切削工具は、軸状の工具本体と、歯部とを備えている。
　前記工具本体は、加工時に、少なくとも軸方向先端部が前記環状部の内側に挿入される。
　前記歯部は、前記工具本体の軸方向先端部に、前記工具本体と一体又は別体に設けられており、前記環状部の加工完了後の内周面の断面形状に合致する歯先形状を有している。
　そして、前記工具本体に、軸方向一端側の開口部が、加工時に、前記工具本体のうちの前記環状部の内側に挿入される部分の軸方向先端側を向いた面に開口しており、切削油を前記歯部に供給する為の給油通路が形成されている。
　尚、歯部は、前記工具本体に直接形成しても良いし、別体に設けたものを、前記工具本体に結合固定しても良い。 The total cutting tool of the present invention is for rotating a work having an annular part at least in part and cutting the inner peripheral surface of the annular part in a state in which the rotation is prevented. .
Specifically, for example, in the total cutting tool of the present invention, one end in the axial direction of the annular portion of the workpiece (the end opposite to the side on which the total cutting tool is disposed) is integrated with the workpiece. It can be used suitably for the cutting method performed in the state closed by the provided bottom or the lid provided separately.
Such a total cutting tool of the present invention includes a shaft-shaped tool body and a tooth portion.
The tool body is inserted into the annular portion at least in the axial direction at the time of processing.
The tooth portion is provided integrally or separately from the tool main body at the tip end in the axial direction of the tool main body, and has a tooth tip shape that matches the cross-sectional shape of the inner peripheral surface after processing of the annular portion. Have.
And, in the tool body, an opening on one end side in the axial direction is opened on the surface facing the tip end side in the axial direction of the portion inserted into the annular portion of the tool body during processing, An oil supply passage for supplying cutting oil to the tooth portion is formed.
The tooth portion may be formed directly on the tool body, or a separate part may be connected and fixed to the tool body.

　上述の様な本発明の総型切削工具を実施する場合には、追加的に、前記歯部を、前記工具本体の軸方向先端部の円周方向一部に設けてもよい。また、この様な構成を採用した場合には、追加的に、前記給油通路の軸方向一端側の開口部の少なくとも一部を、前記工具本体の先端面に開口させてもよい。 When the general cutting tool of the present invention as described above is implemented, the tooth portion may be additionally provided at a part in the circumferential direction of the axial tip portion of the tool body. In addition, when such a configuration is adopted, at least a part of the opening on the one end side in the axial direction of the oil supply passage may be additionally opened on the tip surface of the tool body.

　上述の様な構成を実施する場合には、追加的に、前記給油通路の軸方向一端側の開口部の少なくとも一部を、前記工具本体の先端面のうち、円周方向に関して前記歯部と反対側半部に開口させてもよい。 In the case of implementing the above-described configuration, additionally, at least a part of the opening on one end side in the axial direction of the oil supply passage is connected to the tooth portion with respect to the circumferential direction of the tip end surface of the tool body. You may make it open to the other half.

　また、上述の様な構成を実施する場合には、追加的に、前記給油通路の軸方向一端側の開口部の少なくとも一部を、前記工具本体の軸方向先端面のうち、前記歯部が形成された位置に対して、加工時の前記ワークの回転方向と反対方向側端部に開口させてもよい。
　上述の様な総型切削工具を実施する場合には、追加的に、前記給油通路を、少なくとも軸方向一部が径方向外方に開口した状態で形成してもよい。
　さらに、上述の様な総型切削工具を実施する場合には、追加的に、前記給油通路の、軸方向に直交する仮想平面に関する断面形状が、四角形状に形成されてもよい。 In addition, when the configuration as described above is performed, additionally, at least a part of the opening on the one end side in the axial direction of the oil supply passage is formed on the tip end surface in the axial direction of the tool body. You may make it open in the edge part on the opposite side to the rotation direction of the said workpiece | work at the time of a process with respect to the formed position.
In the case of implementing the above-described general cutting tool, the oil supply passage may be additionally formed in a state where at least a part in the axial direction is opened radially outward.
Furthermore, when implementing the above-mentioned general cutting tool, the cross-sectional shape regarding the virtual plane orthogonal to the axial direction of the oil supply passage may be formed in a quadrangular shape.

　上述の様に構成する本発明の総型切削工具によれば、歯部の先端部に溶着や摩耗等の損傷が生じる事を抑制できると共に、加工中に生じる切りくずを、ワークの環状部の外部に排出し易い総型切削工具の構造を実現できる。
　即ち、本発明の場合、給油通路を、総型切削工具の工具本体に形成すると共に、この給油通路の軸方向一端側の開口部を、工具本体のうち、加工時に、前記ワークの環状部の内側に挿入される部分の軸方向先端側を向いた面に開口させている。この為、給油通路から噴射された切削油が、前述の従来方法の場合と比べて、前記歯部の先端部にまで行き渡り易い。この結果、切削加工中に、歯部の先端部が高温になる事を抑えて、当該部分に溶着や摩耗等の損傷が生じる事を抑制できる。
　又、例えば、軸方向一端部が底部（この他、チャック装置の端面等の様にワークとは別体に設けられた蓋体）により塞がれた状態のワークの環状部に切削加工を施す際、前記給油通路の軸方向一端側の開口部から噴射した切削油は、前記底部によりこの噴射の方向と逆方向（ワークの環状部の軸方向開口部に向かう方向）の流れを惹起される。この為、加工中に生じた切りくずが、前記ワークの環状部の外部に排出され易くなる。この結果、加工後に、前記切りくずを取り除く為の除去作業が不要、或いは除去作業を行う場合でも簡単な作業で済む様になり、作業効率の向上を図れる。更に、前記切りくずにより、加工後の前記ワークの環状部が傷つく事を抑制できる。 According to the general cutting tool of the present invention configured as described above, it is possible to suppress the occurrence of damage such as welding or wear at the tip of the tooth portion, and to remove chips generated during processing of the annular portion of the workpiece. It is possible to realize a structure of a total cutting tool that can be easily discharged to the outside.
That is, in the case of the present invention, the oil supply passage is formed in the tool main body of the total cutting tool, and the opening on one end side in the axial direction of the oil supply passage is formed in the annular portion of the workpiece during machining of the tool main body. An opening is made in the surface facing the tip end side in the axial direction of the portion inserted inside. For this reason, the cutting oil injected from the oil supply passage is more likely to reach the tip of the tooth portion than in the case of the conventional method described above. As a result, it is possible to suppress the tip portion of the tooth portion from becoming high temperature during the cutting process, and to suppress the occurrence of damage such as welding or wear in the portion.
Further, for example, the annular portion of the workpiece in which one end portion in the axial direction is closed by the bottom portion (in addition, a lid provided separately from the workpiece such as the end face of the chuck device) is cut. At this time, the cutting oil sprayed from the opening on one end side in the axial direction of the oil supply passage causes a flow in a direction opposite to the direction of the injection (a direction toward the axial opening of the annular portion of the workpiece) by the bottom portion. . For this reason, chips generated during processing are easily discharged to the outside of the annular portion of the workpiece. As a result, the removal work for removing the chips after processing is unnecessary, or even if the removal work is performed, simple work can be performed, and work efficiency can be improved. Furthermore, it can suppress that the cyclic | annular part of the said workpiece | work after a process is damaged by the said chip.

本発明の実施の形態の第１例を示す、総型切削工具の先端側から見た図。The figure seen from the front end side of the total type cutting tool which shows the 1st example of embodiment of this invention. 同じく、総型切削工具を使用した切削加工方法を説明する為の図であって、加工前の状態を示す図（ａ）と、加工後の状態を示す図（ｂ）。Similarly, it is a figure for demonstrating the cutting method using a general-type cutting tool, Comprising: The figure (a) which shows the state before a process, and the figure (b) which shows the state after a process. 本発明の実施の形態の第２例を示す、図１と同様の図。The figure similar to FIG. 1 which shows the 2nd example of embodiment of this invention. 本発明の実施の形態の第３例を示す、図１と同様の図。The figure similar to FIG. 1 which shows the 3rd example of embodiment of this invention. （ａ）及び（ｂ）は、本発明の実施の形態の第４例を示す、図２と同様の図。(A) And (b) is a figure similar to FIG. 2 which shows the 4th example of embodiment of this invention. （ａ）及び（ｂ）は、本発明の実施の形態の第５例を示す、図２と同様の図。(A) And (b) is a figure similar to FIG. 2 which shows the 5th example of embodiment of this invention. 本発明の実施の形態の第６例を示す、図２（ｂ）と同様の図。The figure similar to FIG.2 (b) which shows the 6th example of embodiment of this invention. 総型切削工具を用いた切削加工の対象の１例である外輪及び内輪を備えた玉軸受の構造を示す断面図。Sectional drawing which shows the structure of the ball bearing provided with the outer ring | wheel and the inner ring | wheel which are one example of the object of the cutting process using a total type cutting tool. 従来から行われている総型切削工具を用いた切削加工方法を説明する為の模式図。The schematic diagram for demonstrating the cutting method using the total type cutting tool conventionally performed.

　　［実施の形態の第１例］
　本発明の実施の形態の第１例に就いて、図１、２により説明する。本例の総型切削工具１０ａは、ワークの環状部の内周面を、所望の形状に加工する為の切削加工に使用されるものである。具体的には、例えば、図８に示す様な玉軸受１を構成する外輪２の内周面に、外輪軌道４、１対の肩部５ａ、５ｂ、及び１対のシール係止溝６ａ、６ｂを形成する為の切削加工に使用される。以下、本例の総型切削工具１０ａの構造に就いて説明し、その後、本例の総型切削工具１０ａを、工作機械（例えば旋盤等）に組み込んで行う切削加工方法に就いて説明する。 [First example of embodiment]
A first example of the embodiment of the present invention will be described with reference to FIGS. The general cutting tool 10a of this example is used for cutting for processing the inner peripheral surface of the annular portion of the workpiece into a desired shape. Specifically, for example, an outer ring raceway 4, a pair of shoulder portions 5a and 5b, and a pair of seal locking grooves 6a, on the inner peripheral surface of the outer ring 2 constituting the ball bearing 1 as shown in FIG. It is used for cutting to form 6b. Hereinafter, the structure of the general cutting tool 10a of this example will be described, and then a cutting method performed by incorporating the general cutting tool 10a of this example into a machine tool (for example, a lathe) will be described.

　本例の総型切削工具１０ａは、ワークの環状部の内周面に外輪軌道４、両肩部５ａ、５ｂ、及び両シール係止溝６ａ、６ｂを形成して外輪２を造る為の切削加工に使用されるものであり、例えば、高速度鋼（ＳＫＨ５１、ハイス鋼）、超硬合金等により造られている。
　この様な総型切削工具１０ａは、工具本体１４と、歯部１５とを備えている。
　工具本体１４は、基端側軸部１６と、先端側軸部１７とから成る。
　この基端側軸部１６は、略円柱状に形成されている。
　先端側軸部１７は、この基端側軸部１６よりも小径であり、この基端側軸部１６の軸方向一端面（図１の表面、図２の左端面）の略中央部から、軸方向一方（図１の表側、図２の左側）に突出した状態で形成されている。この様な先端側軸部１７の形状は、後述する歯部１５を形成する事ができる形状であれば、特に限定されるものではなく、剛性等を考慮して適宜決定する。本例の場合、先端側軸部１７は、先端に向かうほど細くなる（断面積が小さくなる）状態で形成されている。又、先端側軸部１７の先端面は、軸方向一方から見た形状が、略半円状（勾玉状）の平坦面１８となっている。 The total cutting tool 10a of this example is a cutting for forming the outer ring 2 by forming the outer ring raceway 4, both shoulder parts 5a, 5b, and both seal locking grooves 6a, 6b on the inner peripheral surface of the annular part of the workpiece. For example, it is made of high-speed steel (SKH51, high-speed steel), cemented carbide or the like.
Such an overall cutting tool 10 a includes a tool body 14 and a tooth portion 15.
The tool body 14 includes a proximal end side shaft portion 16 and a distal end side shaft portion 17.
The proximal end side shaft portion 16 is formed in a substantially cylindrical shape.
The distal end side shaft portion 17 is smaller in diameter than the proximal end side shaft portion 16, and from the substantially central portion of one axial end surface (the surface in FIG. 1, the left end surface in FIG. 2) of the proximal end side shaft portion 16. It is formed in a state protruding in one axial direction (the front side in FIG. 1 and the left side in FIG. 2). The shape of the distal end side shaft portion 17 is not particularly limited as long as it is a shape capable of forming a tooth portion 15 described later, and is appropriately determined in consideration of rigidity and the like. In the case of this example, the distal end side shaft portion 17 is formed in a state of becoming thinner (a cross-sectional area becomes smaller) toward the distal end. Further, the tip end surface of the tip end side shaft portion 17 is a flat surface 18 having a substantially semicircular shape (tiltball shape) when viewed from one axial direction.

　又、歯部１５は、先端側軸部１７の先端寄り部分の円周方向一部に直接形成されている。具体的には、歯部１５は、先端側軸部１７のうち、円周方向に関して、平坦面１８の円弧部１９の円周方向一端縁（図１の反時計方向側端縁であって、図１にＹで示す位置）と整合する位置（軸方向に重畳する位置）に形成されている。この様な歯部１５は、加工中に、この歯部１５を、回転（図１の時計方向に回転）しているワークの環状部の内周面に当接させて、この内周面を削る事により、この歯部１５の歯先の輪郭形状（先端側軸部１７の中心軸を含む仮想平面に関する断面形状）を、ワークの環状部の内周面に写す様にして形成する為のものである。 Further, the tooth portion 15 is directly formed in a part in the circumferential direction of the tip portion of the tip side shaft portion 17. Specifically, the tooth portion 15 is one end edge in the circumferential direction of the arc portion 19 of the flat surface 18 in the circumferential direction of the distal end side shaft portion 17 (the counterclockwise side edge in FIG. It is formed at a position (position overlapping in the axial direction) aligned with a position indicated by Y in FIG. Such a tooth portion 15 is brought into contact with the inner peripheral surface of the annular portion of the rotating workpiece (rotating clockwise in FIG. 1) during processing, and this inner peripheral surface is brought into contact with the inner peripheral surface. By cutting, the contour shape of the tooth tip of the tooth portion 15 (cross-sectional shape related to a virtual plane including the central axis of the tip side shaft portion 17) is formed so as to be copied onto the inner peripheral surface of the annular portion of the workpiece. Is.

　本例の場合、この歯部１５の歯先の輪郭形状は、外輪２の内周面の断面形状に合致する形状（沿う形状）を有している。具体的には、本例の場合、歯部１５の歯先の軸方向両端寄り部分には、外輪２の両シール係止溝６ａ、６ｂを形成する為の、１対のシール溝形成部２０ａ、２０ｂが設けられている。
　又、歯部１５の歯先の軸方向中央部には、外輪２の外輪軌道４を形成する為の、軌道形成部２１が設けられている。
　更に、軌道形成部２１の軸方向両端縁と、両シール溝形成部２０ａ、２０ｂの軸方向中央側端縁との間には、外輪２の肩部５ａ、５ｂを形成する為の１対の肩部形成部２２ａ、２２ｂが設けられている。
　尚、本例の場合、先端側軸部１７の外周面の、円周方向に関して円弧部１９と整合する位置（軸方向に関して重畳する位置）、且つ、軸方向に関して歯部１５の歯先と整合する位置（円周方向に関して重畳する位置）には、後述する再研磨により歯部の歯先となる、歯部予備部（図１、図３の、再研磨後の形状を表す二点鎖線Ｘと円弧部１９との交点）が形成されている。 In the case of this example, the contour shape of the tooth tip of the tooth portion 15 has a shape (a shape along the shape) that matches the cross-sectional shape of the inner peripheral surface of the outer ring 2. Specifically, in the case of this example, a pair of seal groove forming portions 20a for forming both seal locking grooves 6a, 6b of the outer ring 2 at portions near both axial ends of the tooth tip of the tooth portion 15. , 20b are provided.
Further, a track forming portion 21 for forming the outer ring raceway 4 of the outer ring 2 is provided at the axial center portion of the tooth tip of the tooth portion 15.
Further, a pair of shoulders 5a and 5b for the outer ring 2 are formed between both axial edges of the track forming part 21 and the axially central edges of both seal groove forming parts 20a and 20b. Shoulder forming portions 22a and 22b are provided.
In the case of this example, the outer peripheral surface of the distal end side shaft portion 17 is aligned with the circular arc portion 19 in the circumferential direction (position overlapping with the axial direction) and aligned with the tooth tip of the tooth portion 15 in the axial direction. At the position to be overlapped (position overlapping with respect to the circumferential direction), a tooth spare part (the two-dot chain line X representing the shape after re-polishing in FIG. 1 and FIG. And the arc portion 19).

　特に、本例の総型切削工具１０ａの場合、工具本体１４に、軸方向一端部が平坦面１８に開口し、軸方向他端部が基端側軸部１６の軸方向他端面に開口した状態で、軸方向に長い給油通路２３が形成されている。具体的には、この給油通路２３は、軸方向に直交する仮想平面に関する断面形状が円形である。尚、給油通路の、軸方向に直交する仮想平面に関する断面形状は、特に限定されるものではない。例えば、この断面形状を、楕円形状、矩形状等に形成する事もできる。又、給油通路２３の軸方向一端側の開口部は、平坦面１８の、円周方向に関して歯部１５と反対側半部に形成されている。尚、円周方向に関して反対側半部とは、平坦面１８の円弧部１９の円周方向に関する中心Ｃ１９と、この円弧部１９を含む曲率中心（仮想円の中心）Ｏ１９とを結んだ線分ｄ１９に関して、歯部１５と反対側半部（図１の左側半部）の事を言う。 In particular, in the case of the total cutting tool 10a of this example, one end portion in the axial direction is opened in the flat surface 18 in the tool body 14, and the other end portion in the axial direction is opened in the other end surface in the axial direction of the base end side shaft portion 16. In this state, a long oil supply passage 23 is formed in the axial direction. Specifically, the oil supply passage 23 has a circular cross-sectional shape with respect to a virtual plane orthogonal to the axial direction. In addition, the cross-sectional shape regarding the virtual plane orthogonal to the axial direction of the oil supply passage is not particularly limited. For example, the cross-sectional shape can be formed into an elliptical shape, a rectangular shape, or the like. Moreover, the opening part of the axial direction one end side of the oil supply channel | path 23 is formed in the half part of the flat surface 18 on the opposite side to the tooth | gear part 15 regarding the circumferential direction. The opposite half portion in the circumferential direction connects the center C 19 in the circumferential direction of the arc portion 19 of the flat surface 18 and the center of curvature (center of the virtual circle) O 19 including the arc portion 19. Regarding the line segment d 19, it refers to the half portion on the opposite side of the tooth portion 15 (left half portion in FIG. 1).

　次に、上述の様な構成を有する本例の総型切削工具１０ａを工作機械（図示省略）に組み込んで行う切削加工方法に就いて説明する。尚、本例の切削加工方法は、少なくとも一部に環状部を有するワークの、この環状部の内周面に、外輪２の外輪軌道４、両肩部５ａ、５ｂ、及び両シール係止溝６ａ、６ｂを形成する為の切削加工方法である。尚、ワークの環状部の内周面に形成する形状は、適宜選択する事ができる。この際には、歯部１５の歯先の輪郭形状（中心軸を含む仮想平面に関する断面形状）を、ワークの環状部の内周面に形成する形状に合わせて適宜変更する。 Next, a description will be given of a cutting method performed by incorporating the total cutting tool 10a of the present example having the above-described configuration into a machine tool (not shown). In the cutting method of this example, the outer ring raceway 4, the shoulders 5a, 5b, and both seal locking grooves of the outer ring 2 are formed on the inner peripheral surface of the annular part of the workpiece having at least a part of the annular part. This is a cutting method for forming 6a and 6b. In addition, the shape formed in the internal peripheral surface of the cyclic | annular part of a workpiece | work can be selected suitably. At this time, the contour shape of the tooth tip of the tooth portion 15 (cross-sectional shape related to the virtual plane including the central axis) is appropriately changed according to the shape formed on the inner peripheral surface of the annular portion of the workpiece.

　本例の切削加工方法は、円柱状の素材の軸方向他端部に円筒状部分２５を形成する事により造られたワーク２４を使用する。尚、本例の切削加工方法の場合、この円筒状部分２５が、本発明の環状部に相当する。
　円筒状部分２５は、前工程の段階で形成されたものである。この様な円筒状部分２５は、軸方向一端面が底部２６により塞がれている。又、この底部２６の軸方向他側面（図２の右側面）は、径方向内側に向かうほど軸方向一方に傾斜した円錐面状に形成されている。尚、この底部２６の軸方向他側面の形状は、適宜変更する事も可能である。例えば、径方向内側に向かうほど軸方向一方に凹んだ部分球面状とする事もできる。又、軸方向から見た形状が円形の平坦面と、この平坦面の径方向外方に形成された、径方向内側に向かうほど軸方向一方に傾斜した部分円錐面（又は、軸方向一方に凹んだ部分球面）とにより構成する事もできる。即ち、後述する様な切削油の流れを惹起し易い形状を適宜採用する事ができる。 The cutting method of this example uses a workpiece 24 formed by forming a cylindrical portion 25 at the other axial end of a columnar material. In the case of the cutting method of this example, the cylindrical portion 25 corresponds to the annular portion of the present invention.
The cylindrical portion 25 is formed at the stage of the previous process. In such a cylindrical portion 25, one end surface in the axial direction is closed by the bottom portion 26. Further, the other axial side surface (the right side surface in FIG. 2) of the bottom portion 26 is formed in a conical surface shape that is inclined in one axial direction toward the inner side in the radial direction. The shape of the other side surface in the axial direction of the bottom portion 26 can be changed as appropriate. For example, it may be a partial spherical shape that is recessed in one axial direction as it goes radially inward. In addition, a flat surface having a circular shape when viewed from the axial direction, and a partial conical surface that is formed radially outward of the flat surface and is inclined in one axial direction toward the radially inner side (or in one axial direction) It can also be constituted by a concave partial spherical surface). That is, it is possible to appropriately adopt a shape that will easily cause the flow of cutting oil as will be described later.

　ワーク２４の軸方向一端部は、工作機械の主軸（図示省略）に、チャック装置等を介して固定されている。
　又、円筒状部分２５の軸方向他方側には、総型切削工具１０ａが配置されている。この様な総型切削工具１０ａは、基端側軸部１６の基端部を、工作機械の一部に固定ブッシュ９を介して支持固定されている。 One end of the workpiece 24 in the axial direction is fixed to a spindle (not shown) of the machine tool via a chuck device or the like.
A total cutting tool 10a is disposed on the other axial side of the cylindrical portion 25. In such a general cutting tool 10a, the base end portion of the base end side shaft portion 16 is supported and fixed to a part of the machine tool via a fixing bush 9.

　切削加工を行う際には、図２（ａ）に示す様に、ワーク２４（円筒状部分２５）を回転させた状態で、総型切削工具１０ａを、この総型切削工具１０ａの軸方向先端部（軸方向一端部）が、円筒状部分２５の内径側に位置するまで軸方向一方に移動させる。この際、総型切削工具１０ａは回転していない。又、この状態で、給油通路２３の軸方向一端側の開口部から切削油を、図２に矢印α３で示す様に噴射しておく。本例の場合、給油通路２３の軸方向一端側の開口部から噴射された切削油の一部は、底部２６の軸方向他側面に沿う様に、この底部２６の径方向に移動し、円筒状部分２５の内周面に沿いながら、この円筒状部分２５の軸方向他端側の開口部から外部に流出する。そして、総型切削工具１０ａを径方向外方（図２の下方）に変位させて（切り込ませて）、歯部１１を円筒状部分２５の内周面に当接させる。すると、この円筒状部分２５の内周面が、歯部１１の歯先の輪郭形状（先端側軸部１７の中心軸を含む仮想平面に関する断面形状）に沿う様な形状に削られて、外輪軌道４、両肩部５ａ、５ｂ、及び両シール係止溝６ａ、６ｂが形成される。 When performing the cutting process, as shown in FIG. 2A, the total cutting tool 10a is moved in the axial direction of the total cutting tool 10a while the workpiece 24 (cylindrical portion 25) is rotated. The portion (one axial end portion) is moved in one axial direction until it is located on the inner diameter side of the cylindrical portion 25. At this time, the total cutting tool 10a is not rotating. In this state, the cutting oil from the opening of the axial end of the oil supply passage 23, keep the injection as indicated by the arrow alpha 3 in FIG. In the case of this example, a part of the cutting oil injected from the opening on one end side in the axial direction of the oil supply passage 23 moves in the radial direction of the bottom portion 26 along the other side surface in the axial direction of the bottom portion 26, and is cylindrical. While flowing along the inner peripheral surface of the cylindrical portion 25, the cylindrical portion 25 flows out from the opening on the other axial end side. Then, the total cutting tool 10 a is displaced (cut) in the radially outward direction (downward in FIG. 2), and the tooth portion 11 is brought into contact with the inner peripheral surface of the cylindrical portion 25. Then, the inner peripheral surface of the cylindrical portion 25 is shaved into a shape along the contour shape of the tooth tip of the tooth portion 11 (cross-sectional shape related to a virtual plane including the central axis of the distal end side shaft portion 17). The track 4, both shoulders 5a and 5b, and both seal locking grooves 6a and 6b are formed.

　尚、本例の総型切削工具１０ａは、加工中（切削中）は、径方向にのみ変位する。この総型切削工具１０ａを軸方向に変位させるのは、前述した様に、この総型切削工具１０ａの軸方向先端部を、円筒状部分２５の内径側に位置させる際と、加工後に、総型切削工具１０ａの軸方向先端部を、円筒状部分２５の内径側から退避させる際のみである。
　切削加工が終了した後、加工後の円筒状部分２５を図２（ｂ）にγで示す位置で切り落として、次工程に進む。 Note that the total cutting tool 10a of this example is displaced only in the radial direction during processing (cutting). As described above, the total cutting tool 10a is displaced in the axial direction when the tip end in the axial direction of the total cutting tool 10a is positioned on the inner diameter side of the cylindrical portion 25 and after machining. This is only when the axial tip of the die cutting tool 10 a is retracted from the inner diameter side of the cylindrical portion 25.
After the cutting process is completed, the processed cylindrical portion 25 is cut off at a position indicated by γ in FIG. 2B, and the process proceeds to the next step.

　上述の様に構成する本例の総型切削工具１０ａによれば、上述した様な切削加工方法を実施する際、歯部１５の先端部に溶着や摩耗等の損傷が生じる事を抑制できると共に、加工中に生じる切りくずを、円筒状部分２５の外部に排出し易い構造を実現できる。
　即ち、本例の場合、総型切削工具１０ａの工具本体１４に、軸方向一端側の開口部が、この工具本体１４の平坦面１８に開口した給油通路２３が形成されている。この為、この給油通路２３から噴射された切削油が、前述の従来から行われている切削加工方法の場合と比べて、歯部１５の先端部にまで行き渡り易い。この結果、切削加工中に、この歯部１５の先端部が高温になる事を抑えて、当該部分に溶着や摩耗等の損傷が生じる事を抑制できる。 According to the overall cutting tool 10a of the present example configured as described above, it is possible to suppress the occurrence of damage such as welding or wear at the tip of the tooth portion 15 when performing the cutting method as described above. Thus, it is possible to realize a structure in which chips generated during processing can be easily discharged to the outside of the cylindrical portion 25.
In other words, in the case of this example, the tool body 14 of the total cutting tool 10a is formed with an oil supply passage 23 having an opening on one end side in the axial direction and opening on the flat surface 18 of the tool body 14. For this reason, the cutting oil sprayed from the oil supply passage 23 can easily reach the tip of the tooth portion 15 as compared with the conventional cutting method. As a result, it is possible to suppress the tip portion of the tooth portion 15 from becoming a high temperature during the cutting process, and to suppress the occurrence of damage such as welding or wear at the portion.

　又、前述した切削加工方法の様に、軸方向一端部（軸方向奥端部）が底部２６により塞がれた円筒状部分２５に切削加工を施す際、給油通路２３の軸方向一端側の開口部から軸方向一方に噴射した切削油は、底部２６の軸方向他側面に案内されて、この噴射の方向と逆方向（軸方向他方であって、円筒状部分２５の開口部に向かう方向）の流れを惹起される。この為、加工中に生じた切りくずが、円筒状部分２５の外部に排出され易くなる。この結果、加工後に、切りくずを取り除く為の除去作業が不要となるか、或いは除去作業を行う場合でも簡単な作業で済む様になり、作業効率の向上を図れる。更に、切りくずにより、加工後の円筒状部分２５が傷つく事を抑制できる。 Further, when the cylindrical portion 25 whose one end in the axial direction (back end in the axial direction) is closed by the bottom portion 26 is cut as in the above-described cutting method, the axial end of the oil supply passage 23 on the one end side in the axial direction is provided. The cutting oil sprayed in one axial direction from the opening is guided to the other side surface in the axial direction of the bottom portion 26 and is in the direction opposite to the direction of this spraying (the other in the axial direction toward the opening of the cylindrical portion 25). ) Is triggered. For this reason, chips generated during processing are easily discharged to the outside of the cylindrical portion 25. As a result, the removal work for removing chips after processing becomes unnecessary, or a simple work can be performed even when the removal work is performed, and the work efficiency can be improved. Furthermore, it can suppress that the cylindrical part 25 after a process is damaged by a chip.

　特に本例の場合、底部２６の軸方向他側面が、径方向内側に向かうほど軸方向一方に傾斜した円錐面状に形成されている。この為、給油通路２３の軸方向一端側の開口部から噴射した切削油を、底部２６の軸方向他側面に沿う様に、この底部２６の径方向に移動させる事ができる。従って、切削油を、歯部１５の先端部｛図２（ｂ）にβで示す部分｝に供給し易くできる。 Particularly in the case of this example, the other side surface in the axial direction of the bottom portion 26 is formed in a conical surface shape that is inclined in one axial direction toward the inner side in the radial direction. For this reason, the cutting oil sprayed from the opening on one axial end side of the oil supply passage 23 can be moved in the radial direction of the bottom portion 26 along the other axial side surface of the bottom portion 26. Therefore, it is possible to easily supply the cutting oil to the tip portion of the tooth portion 15 (the portion indicated by β in FIG. 2B).

　又、本例の場合、給油通路２３の軸方向一端側の開口部が、平坦面１８の、円周方向に関して歯部１５と反対側半部に形成されている。この為、給油通路２３の軸方向一端側の開口部と、歯部１５との間に、複数回の再研磨を可能とするだけの余裕代を確保する事ができる。言い換えれば、平坦面１８の円弧部１９は、給油通路２３の軸方向一端側の開口部と、歯部１５との間に存在する部分の周方向に関する長さＬ１９を大きく確保できる。この結果、歯部１５を再研磨できる回数を十分に確保する事ができて、加工コストの低減を図れる。
　尚、再研磨とは、歯部１５が損傷したり、切れ味が悪くなったりした場合に、図１に二点鎖線Ｘで示す様に、歯部１５を研磨して再利用する事を言う。従って、この再研磨を繰り返すほど、歯部１５の位置は、軸方向一端側の開口部に近付く。 In the case of this example, the opening on one end side in the axial direction of the oil supply passage 23 is formed in the half of the flat surface 18 opposite to the tooth portion 15 in the circumferential direction. For this reason, it is possible to secure a margin for re-polishing a plurality of times between the opening on the one end side in the axial direction of the oil supply passage 23 and the tooth portion 15. In other words, the arc portion 19 of the flat surface 18 can ensure a large length L 19 in the circumferential direction of a portion existing between the opening portion on one end side in the axial direction of the oil supply passage 23 and the tooth portion 15. As a result, the number of times that the tooth portion 15 can be re-polished can be sufficiently secured, and the processing cost can be reduced.
The re-polishing means that the tooth portion 15 is polished and reused as indicated by a two-dot chain line X in FIG. 1 when the tooth portion 15 is damaged or the sharpness is deteriorated. Therefore, as this re-polishing is repeated, the position of the tooth portion 15 approaches the opening on the one end side in the axial direction.

　［実施の形態の第２例］
　本発明の実施の形態の第２例に就いて、図３により説明する。本例の総型切削工具１０ｂの場合、給油通路２３ａの軸方向一端側の開口部を、先端側軸部１７の平坦面１８のうちの、円周方向に関して歯部１５と反対側端部で、平坦面１８から径方向外方に外れた位置に掛かる部分に形成している。この為に、本例の場合、給油通路２３ａのうち、工具本体１４の基端側軸部１６に形成された部分は、軸方向両端部のみが開口した貫通孔状に形成されている。一方、給油通路２３ａのうち、工具本体１４の先端側軸部１７に形成された部分は、軸方向両端部及び径方向外方が開口した凹溝状に形成されている。 [Second Example of Embodiment]
A second example of the embodiment of the present invention will be described with reference to FIG. In the case of the total cutting tool 10b of the present example, the opening on one end side in the axial direction of the oil supply passage 23a is formed at the end of the flat surface 18 of the tip end side shaft portion 17 opposite to the tooth portion 15 in the circumferential direction. , Formed in a portion that hangs from the flat surface 18 in a position radially outward. For this reason, in the case of this example, the part formed in the base end side axial part 16 of the tool main body 14 among the oil supply path 23a is formed in the through-hole shape which only the axial direction both ends opened. On the other hand, the part formed in the front end side shaft portion 17 of the tool main body 14 in the oil supply passage 23a is formed in a concave groove shape having both ends in the axial direction and radially outward.

　この様な本例の場合、この平坦面１８の円弧部１９は、給油通路２３ａの軸方向一端側の開口部と、歯部１５との間に存在する部分の円周方向に関する長さを、前述した実施の形態の第１例の場合よりも大きく確保できる。この結果、歯部１５を再研磨できる回数を十分に確保する事ができて、加工コストの低減を図れる。その他の構成及び作用・効果は、前述した実施の形態の第１例と同様である。 In the case of this example, the arc portion 19 of the flat surface 18 has a length in the circumferential direction of a portion existing between the opening portion on one end side in the axial direction of the oil supply passage 23a and the tooth portion 15. It can be ensured larger than in the case of the first example of the embodiment described above. As a result, the number of times that the tooth portion 15 can be re-polished can be sufficiently secured, and the processing cost can be reduced. Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.

　　［実施の形態の第３例］
　本発明の実施の形態の第３例に就いて、図４により説明する。本例の総型切削工具１０ｃの場合、工具本体１４を構成する基端側軸部１６と、先端側軸部１７の外周面のうち、円周方向に関して歯部１５が形成された位置Ｙと略反対側となる部分に、軸方向両端及び径方向外方が開口した給油凹溝２７を形成している。この様な給油凹溝２７は、先端側軸部１７の中心軸（軸方向）に直交する仮想平面に関する断面形状（軸方向から見た形状）が四角形状に形成されている。本例の場合、この給油凹溝２７が、本発明の給油通路に相当する。尚、この給油凹溝２７の軸方向他端部は、基端側軸部１６の軸方向他端面に開口している。 [Third example of embodiment]
A third example of the embodiment of the present invention will be described with reference to FIG. In the case of the total cutting tool 10c of this example, the position Y where the tooth portion 15 is formed in the circumferential direction on the outer peripheral surface of the base end side shaft portion 16 and the distal end side shaft portion 17 constituting the tool body 14; An oil supply groove 27 having openings at both ends in the axial direction and radially outward is formed in a portion on the substantially opposite side. Such an oil supply groove 27 has a quadrangular cross-sectional shape (a shape viewed from the axial direction) with respect to a virtual plane orthogonal to the central axis (axial direction) of the distal end side shaft portion 17. In the case of this example, this oil supply groove 27 corresponds to the oil supply passage of the present invention. The other end in the axial direction of the oil supply groove 27 is open to the other end surface in the axial direction of the base end side shaft portion 16.

　この様な構成を有する本例の場合も、前述した実施の形態の第２例と同様に、平坦面１８の円弧部１９は、給油凹溝２７の軸方向一端側の開口部と、歯部１５との間に存在する部分の円周方向に関する長さを、前述した実施の形態の第１例の場合よりも大きく確保できる。この結果、歯部１５を再研磨できる回数を十分に確保する事ができて、加工コストの低減を図れる。その他の構成及び作用・効果は、前述した実施の形態の第１例と同様である。 In the case of this example having such a configuration as well, as in the second example of the embodiment described above, the arc portion 19 of the flat surface 18 includes an opening portion on one end side in the axial direction of the oil supply groove 27 and a tooth portion. The length in the circumferential direction of the portion existing between 15 can be secured larger than in the case of the first example of the embodiment described above. As a result, the number of times that the tooth portion 15 can be re-polished can be sufficiently secured, and the processing cost can be reduced. Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.

　　［実施の形態の第４例］
　本発明の実施の形態の第４例に就いて、図５により説明する。本例は、工作機械に、前述した実施の形態の第１例～第３例の何れかの総型切削工具１０ａ、１０ｂ、１０ｃを組み込んで行う切削加工方法の別例を示している。尚、図５の場合には、前述した実施の形態の第１例の総型切削工具１０ａを使用している。又、本例の切削加工方法も、前述した実施の形態の第１例と同様に、環状部材の内周面に、外輪２の外輪軌道４、両肩部５ａ、５ｂ、及び両シール係止溝６ａ、６ｂを形成する為の切削加工方法である。 [Fourth Example of Embodiment]
A fourth example of the embodiment of the present invention will be described with reference to FIG. This example shows another example of a cutting method that is performed by incorporating any one of the first to third examples of the overall cutting tools 10a, 10b, and 10c in the machine tool. In the case of FIG. 5, the total cutting tool 10a of the first example of the embodiment described above is used. Further, in the cutting method of this example, as in the first example of the embodiment described above, the outer ring raceway 4, the shoulders 5a, 5b, and both seals of the outer ring 2 are provided on the inner peripheral surface of the annular member. This is a cutting method for forming the grooves 6a and 6b.

　この様な本例の切削加工方法では、外輪２よりも軸方向に関する寸法が大きい円筒状のワーク２８の軸方向他端側半部が、本発明の環状部に相当する。この様なワーク２８は、軸方向の両端部が開口している。そこで、本例の場合、このワーク２８の軸方向一端側の開口部を、このワーク２８を工作機械の主軸（図示省略）に支持固定する為のチャック装置の一部を構成する蓋体２９により塞いでいる。尚、蓋体の構造は、円筒状のワーク２８の軸方向一端部を塞げる形状であれば、特に限定されるものではない。又、蓋体２９の軸方向他側面を、前述した実施の形態の第１例の底部２６の軸方向他側面の様な円錐面状に形成する事もできる。その他の構成及び作用・効果は、前述した実施の形態の第１例と同様である。 In such a cutting method of this example, the other half in the axial direction of the cylindrical workpiece 28 having a larger dimension in the axial direction than the outer ring 2 corresponds to the annular portion of the present invention. Such a workpiece 28 is open at both ends in the axial direction. Therefore, in the case of this example, the opening on one end side in the axial direction of the work 28 is supported by a lid 29 constituting a part of a chuck device for supporting and fixing the work 28 to a main shaft (not shown) of the machine tool. It is blocking. The structure of the lid is not particularly limited as long as it is a shape that closes one end of the cylindrical workpiece 28 in the axial direction. Further, the other side surface in the axial direction of the lid 29 can be formed in a conical surface like the other side surface in the axial direction of the bottom portion 26 of the first example of the embodiment described above. Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.

　　［実施の形態の第５例］
　本発明の実施の形態の第５例に就いて、図６により説明する。本例は、工作機械に、前述した実施の形態の第１例～第３例の何れかの総型切削工具１０ａ、１０ｂ、１０ｃを組み込んで行う切削加工方法の別例を示している。尚、図６の場合には、前述した実施の形態の第１例の総型切削工具１０ａを使用している。又、本例の切削加工方法も、前述した実施の形態の第１例と同様に、ワークの環状部の内周面に、外輪２の外輪軌道４、両肩部５ａ、５ｂ、及び両シール係止溝６ａ、６ｂを形成する為の切削加工方法である。 [Fifth Example of Embodiment]
A fifth example of the embodiment of the present invention will be described with reference to FIG. This example shows another example of a cutting method that is performed by incorporating any one of the first to third examples of the overall cutting tools 10a, 10b, and 10c in the machine tool. In the case of FIG. 6, the total cutting tool 10a of the first example of the embodiment described above is used. Also, the cutting method of this example is similar to the first example of the above-described embodiment, on the inner peripheral surface of the annular portion of the workpiece, the outer ring raceway 4 of the outer ring 2, both shoulder portions 5a, 5b, and both seals. This is a cutting method for forming the locking grooves 6a and 6b.

　この様な本例の切削加工方法の場合、外輪２の軸方向に関する長さ寸法と同じ軸方向寸法を有するワーク２８ａが、本発明の環状部に相当する。この様なワーク２８ａは、その外周面に、チャック装置の把持部３０を外嵌固定する事により、工作機械の主軸に支持固定されている。この様なワーク２８ａは、軸方向の両端部が開口している。そこで、本例の場合、このワーク２８ａの軸方向一端側の開口部を、蓋体３１により塞いでいる。この蓋体３１は、円筒部３２と、この円筒部３２の軸方向一端部を塞ぐ底部３３とから成る有底円筒状である。この様な蓋体３１は、円筒部３２の軸方向他端面（図６の右端面）を、ワーク２８ａの軸方向一端面に当接させた状態で、工作機械の一部に支持されている。尚、本例の場合、蓋体３１の軸方向他側面は、平坦面状に形成されている。但し、この蓋体３１の軸方向他側面を、前述した実施の形態の第１例の底部２６の軸方向他側面の様な円錐面状に形成する事もできる。その他の構成及び作用・効果は、前述した実施の形態の第１例と同様である。 In such a cutting method of this example, the workpiece 28a having the same axial dimension as the axial dimension of the outer ring 2 corresponds to the annular portion of the present invention. Such a workpiece 28a is supported and fixed to the spindle of the machine tool by externally fixing and fixing the grip portion 30 of the chuck device to the outer peripheral surface thereof. Such a workpiece 28a is open at both ends in the axial direction. Therefore, in the case of this example, the opening on the one end side in the axial direction of the work 28 a is closed by the lid 31. The lid body 31 has a bottomed cylindrical shape including a cylindrical portion 32 and a bottom portion 33 that closes one axial end portion of the cylindrical portion 32. Such a lid 31 is supported by a part of the machine tool in a state where the other axial end surface (the right end surface in FIG. 6) of the cylindrical portion 32 is in contact with the one axial end surface of the workpiece 28a. . In the case of this example, the other axial side surface of the lid body 31 is formed in a flat surface shape. However, the other side surface in the axial direction of the lid 31 can be formed in a conical surface shape like the other side surface in the axial direction of the bottom portion 26 of the first example of the embodiment described above. Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.

　　［実施の形態の第６例］
　本発明の実施の形態の第６例に就いて、図７により説明する。本例の総型切削工具１０ｄは、図８に示す様な玉軸受１を構成する内輪３の内周面の軸方向両端部に、１対の面取り部３４ａ、３４ｂを形成する為の切削加工に使用される。
　具体的には、本例の総型切削工具１０ｄを構成する歯部１５ａは、軸方向両端部に、両面取り部３４ａ、３４ｂを形成する為の、１対の面取り形成部３５ａ、３５ｂが形成されている。又、歯部１５ａのうち、軸方向に関して両面取り形成部３５ａ、３５ｂの間部分は、軸方向関して外径寸法が変わらない平坦部３６が形成されている。尚、加工の際には、必要に応じて、この平坦部３６により内輪３の内周面のうちの両面取り部３４ａ、３４ｂの間部分を切削する。
　以上の様な総型切削工具１０ｄを使用して行う切削加工法方法は、前述した実施の形態の第１例の場合とほぼ同様であるので説明は省略する。
　その他の構成及び作用・効果に関しても、前述した実施の形態の第１例と同様である。 [Sixth Example of Embodiment]
A sixth example of the embodiment of the present invention will be described with reference to FIG. The total cutting tool 10d of this example is a cutting process for forming a pair of chamfered portions 34a and 34b at both axial ends of the inner peripheral surface of the inner ring 3 constituting the ball bearing 1 as shown in FIG. Used for.
Specifically, the tooth portion 15a constituting the total cutting tool 10d of the present example is formed with a pair of chamfer forming portions 35a and 35b for forming double-side chamfered portions 34a and 34b at both ends in the axial direction. Has been. Further, in the tooth portion 15a, a portion between the double-sided forming portions 35a and 35b in the axial direction is formed with a flat portion 36 whose outer diameter does not change in the axial direction. In the processing, if necessary, the flat portion 36 cuts the portion between the double-sided chamfered portions 34a and 34b on the inner peripheral surface of the inner ring 3.
Since the cutting method method using the general cutting tool 10d as described above is substantially the same as that in the first example of the above-described embodiment, the description thereof is omitted.
Other configurations and operations / effects are also the same as in the first example of the embodiment described above.

　前述した実施の形態の各例に記載した切削加工方法に関する発明を実施する場合には、前述した実施の形態の各例の総型切削構造を適宜使用する事ができる。
　又、本発明の総型切削工具、及びこの総型切削工具を使用した切削加工方法の対象は、前述した実施の形態の各例に記載した玉軸受の外輪、内輪に限らず、各種環状部材を対象とする事ができる。
　又、本発明の総型切削工具を実施する場合には、給油通路の一端側開口部を、工具本体の先端面以外の部分に形成する事もできる。具体的には、例えば、この工具本体のうち、加工時に、ワークの環状部の内側に配置される部分の、この工具本体の先端面よりも軸方向他方側に形成された、軸方向先端側を向いた面に形成する事もできる。
　更に、前述した実施の形態の各例の総型切削工具は、歯部を、工具本体に直接形成する構成を採用している。但し、本発明を実施する場合には、別体に設けた歯部を、工具本体に結合固定する構成を採用する事もできる。 When carrying out the invention relating to the cutting method described in each example of the above-described embodiment, the total cutting structure of each example of the above-described embodiment can be used as appropriate.
The object of the general cutting tool of the present invention and the cutting method using the general cutting tool is not limited to the outer ring and the inner ring of the ball bearing described in each example of the embodiment described above, but various annular members. Can be targeted.
Moreover, when implementing the total cutting tool of this invention, the one end side opening part of an oil supply channel | path can also be formed in parts other than the front end surface of a tool main body. Specifically, for example, an axial tip side formed on the other side in the axial direction from the tip surface of the tool body of a portion of the tool body that is disposed inside the annular portion of the workpiece during processing. It can also be formed on the side facing.
Furthermore, the total type cutting tool of each example of embodiment mentioned above employ | adopts the structure which forms a tooth | gear part directly in a tool main body. However, when implementing this invention, the structure which couple | bonds and fixes the tooth | gear part provided separately to a tool main body can also be employ | adopted.

　本出願は、２０１５年１月９日出願の日本特許出願２０１５―００３４０７に基づくものであり、その内容はここに参照として取り込まれる。 This application is based on Japanese Patent Application No. 2015-003407 filed on Jan. 9, 2015, the contents of which are incorporated herein by reference.

　１　玉軸受
　２　外輪
　３　内輪
　４　外輪軌道
　５ａ、５ｂ　肩部
　６ａ、６ｂ　シール係止溝
　７　ワーク
　８　円筒状部分
　９　固定ブッシュ
　１０、１０ａ、１０ｂ、１０ｃ、１０ｄ　総型切削工具
　１１　歯部
　１２　給油ノズル
　１３　給油孔
　１４　工具本体
　１５、１５ａ　歯部
　１６　基端側軸部
　１７　先端側軸部
　１８　平坦面
　１９　円弧部
　２０ａ、２０ｂ　シール溝形成部
　２１　軌道形成部
　２２ａ、２２ｂ　肩部形成部
　２３、２３ａ　給油通路
　２４　ワーク
　２５　円筒状部分
　２６　底部
　２７　給油凹溝
　２８、２８ａ　ワーク
　２９　蓋体
　３０　把持部
　３１　蓋体
　３２　円筒部
　３３　底部
　３４ａ、３４ｂ　面取り部
　３５ａ、３５ｂ　面取り形成部
　３６　平坦部 DESCRIPTION OF SYMBOLS 1 Ball bearing 2 Outer ring 3 Inner ring 4 Outer ring raceway 5a, 5b Shoulder part 6a, 6b Seal locking groove 7 Work piece 8 Cylindrical part 9 Fixed bush 10, 10a, 10b, 10c, 10d Total cutting tool 11 Tooth part 12 Oil supply nozzle DESCRIPTION OF SYMBOLS 13 Oil supply hole 14 Tool body 15, 15a Tooth part 16 Base end side shaft part 17 Front end side shaft part 18 Flat surface 19 Arc part 20a, 20b Seal groove formation part 21 Orbit formation part 22a, 22b Shoulder part formation part 23, 23a Oil supply Passage 24 Work 25 Cylindrical part 26 Bottom 27 Oil supply groove 28, 28a Work 29 Lid 30 Gripping part 31 Lid 32 Cylindrical part 33 Bottom 34a, 34b Chamfer 35a, 35b Chamfer forming part 36 Flat part

Claims (6)

　少なくとも一部に環状部を有するワークを回転させると共に、自身の回転を阻止された状態で、前記環状部の内周面に切削加工を施す為の総型切削工具であって、
　軸状の工具本体と、歯部とを備え、
　前記工具本体は、加工時に、少なくとも軸方向先端部が前記環状部の内側に挿入され、
　前記歯部は、前記工具本体の軸方向先端部に、前記工具本体と一体又は別体に設けられており、前記環状部の加工完了後の内周面の断面形状に合致する歯先形状を有しており、
　前記工具本体には、軸方向一端側の開口部が、加工時に、前記工具本体のうちの前記環状部の内側に挿入される部分の軸方向先端側を向いた面に開口しており、切削油を前記歯部に供給する為の給油通路が形成されている総型切削工具。 A general-purpose cutting tool for rotating a work having an annular portion at least in part and cutting the inner peripheral surface of the annular portion in a state where rotation of the workpiece is prevented,
It has a shaft-shaped tool body and teeth,
The tool body is inserted into the annular portion at least in the axial direction at the time of processing,
The tooth portion is provided integrally or separately from the tool main body at the tip end in the axial direction of the tool main body, and has a tooth tip shape that matches the cross-sectional shape of the inner peripheral surface after processing of the annular portion. Have
In the tool body, an opening on one end side in the axial direction is opened on a surface facing the tip end side in the axial direction of a portion of the tool body that is inserted inside the annular portion during cutting. An all-type cutting tool in which an oil supply passage for supplying oil to the tooth portion is formed. 　前記歯部が、前記工具本体の軸方向先端部の円周方向一部に設けられており、前記給油通路の軸方向一端側の開口部の少なくとも一部が、前記工具本体の先端面に開口している請求項１に記載した総型切削工具。 The tooth portion is provided at a part in the circumferential direction of the axial tip portion of the tool body, and at least a part of the opening portion at one axial end side of the oil supply passage opens at the tip surface of the tool body. The total cutting tool according to claim 1. 　前記給油通路の軸方向一端側の開口部の少なくとも一部が、前記工具本体の先端面のうち、円周方向に関して前記歯部と反対側半部に開口している、請求項２に記載した総型切削工具。 The at least one part of the opening part of the axial direction one end side of the said oil supply channel | path has opened to the half part on the opposite side to the said tooth part regarding the circumferential direction among the front end surfaces of the said tool main body. Total cutting tool. 　前記給油通路の軸方向一端側の開口部の少なくとも一部が、前記工具本体の軸方向先端面のうち、前記歯部が形成された位置に対して、加工時の前記ワークの回転方向と反対方向側端部に開口している、請求項２又は３に記載した総型切削工具。 At least a portion of the opening on one end side in the axial direction of the oil supply passage is opposite to the rotation direction of the workpiece during machining with respect to the position where the tooth portion is formed on the axial front end surface of the tool body. The all-type cutting tool according to claim 2 or 3, wherein an opening is made at a direction side end. 　前記給油通路は、少なくとも軸方向一部が径方向外方に開口した状態で形成されている、請求項１～４の何れか１項に記載した総型切削工具。 The total cutting tool according to any one of claims 1 to 4, wherein the oil supply passage is formed in a state where at least a part in the axial direction is opened radially outward. 　前記給油通路の、軸方向に直交する仮想平面に関する断面形状が、四角形状である、請求項１～５の何れか１項に記載した総型切削工具。 The total cutting tool according to any one of claims 1 to 5, wherein a cross-sectional shape of the oil supply passage with respect to a virtual plane orthogonal to the axial direction is a square shape.
PCT/JP2016/050514 2015-01-09 2016-01-08 Form cutting tool Ceased WO2016111354A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020177018116A KR101943779B1 (en) 2015-01-09 2016-01-08 Form cutting tool
MYPI2017702416A MY185249A (en) 2015-01-09 2016-01-08 Form cutting tool, machine tool, and manufacturing method of radial bearing
CN201680004977.8A CN107107201B (en) 2015-01-09 2016-01-08 Forming Cutting Tools

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CN112091249A (en) * 2020-09-04 2020-12-18 松源机械制造有限公司 Bottle blank injection molding model machining tool and model machining method thereof
JP7544300B1 (en) 2024-02-06 2024-09-03 株式会社タンガロイ Body and cutting tools

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JP2002346809A (en) * 2001-05-25 2002-12-04 Nissan Motor Co Ltd Cutting tool for drilling and drilling method using the tool
JP2005254427A (en) * 2004-03-15 2005-09-22 Osg Corp Tip detachable type tap with oil hole
WO2012169031A1 (en) * 2011-06-08 2012-12-13 オーエスジー株式会社 Removable tip type rotary tool

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MY185249A (en) 2021-04-30
JP6319106B2 (en) 2018-05-09
CN107107201A (en) 2017-08-29
KR20170102475A (en) 2017-09-11

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