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WO2011111808A1 - Outil d'électrodéposition fileté et procédé de traitement de pignon utilisant outil d'électrodéposition fileté - Google Patents

Outil d'électrodéposition fileté et procédé de traitement de pignon utilisant outil d'électrodéposition fileté Download PDF

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Publication number
WO2011111808A1
WO2011111808A1 PCT/JP2011/055726 JP2011055726W WO2011111808A1 WO 2011111808 A1 WO2011111808 A1 WO 2011111808A1 JP 2011055726 W JP2011055726 W JP 2011055726W WO 2011111808 A1 WO2011111808 A1 WO 2011111808A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
threaded
electrodeposition tool
thread
gear
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/JP2011/055726
Other languages
English (en)
Japanese (ja)
Inventor
和寛 藤嵜
正寿 西川
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.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
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 Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Publication of WO2011111808A1 publication Critical patent/WO2011111808A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F21/00—Tools specially adapted for use in machines for manufacturing gear teeth
    • B23F21/02—Grinding discs; Grinding worms
    • B23F21/026—Grinding worms

Definitions

  • the present invention has a screw-like electrodeposition tool that has a screw-like portion in which abrasive grains are electrodeposited on the outer peripheral portion of a base metal, and processes the tooth profile of a work gear, and a gear machining method using the screw-like electrodeposition tool About.
  • a screw-like portion is formed on the outer peripheral portion of a base metal having a substantially cylindrical outer shape, and superabrasive grains such as diamond and cBN are electroplated on the surface.
  • An attached threaded electrodeposition tool is described.
  • the toothed portion of the work gear is ground with superabrasive grains by meshing the screw-like portion with the work gear while rotating the base metal around its central axis.
  • the present invention has been made under such a background, and it is possible to perform truing even with a truing grindstone with a thick grinding part, and it is possible to accurately measure the accuracy of a base metal and a threaded part after truing. It is an object of the present invention to provide a threaded electrodeposition tool and a gear machining method using the threaded electrodeposition tool.
  • a screw-like part spirally twisted around the axis is formed on the outer periphery of the base metal rotated around the axis, and abrasive grains are formed on the surface of the screw-like part.
  • a screw-shaped electrodeposition tool electrodeposited by a plating layer wherein an axial module of the screw-shaped portion with respect to a tooth perpendicular module m of a work gear and a lead angle ⁇ on a reference cylinder of the screw-shaped portion is represented by mx
  • a thread escape portion (groove portion) is formed in the screw-like portion by setting the thread pitch of the screw-like portion to 2 ⁇ mx.
  • the gear machining method of the present invention processes the work gear of the module m using the screw-shaped electrodeposition tool of the present invention.
  • the screw-shaped portion 1 As shown in FIG. 4 of Patent Document 1, the screw-shaped portion 1 as shown in FIG.
  • the axial direction module of the screw part 1 with respect to the module m of the work gear and the advance angle ⁇ on the reference cylinder P of the screw part 1 ⁇ mx pitch.
  • the pitch of this thread is set to a pitch of 2 ⁇ mx which is twice that of the prior art.
  • the thread of one of the two threads is eliminated. That is, in the truing and measurement, a wide groove (stretching part) is formed between adjacent screw threads so as not to interfere with the truing grindstone and the measuring element.
  • this thread-shaped electrodeposition tool it is possible to ensure a large gap between the adjacent screw threads in the axial direction and circumferential direction in the strip relief portion, so that even a general truing grindstone with a thick grinding portion can be used.
  • the threaded electrodeposition tool can be manufactured reliably and easily. Further, since the measuring element can be easily inserted between the adjacent screw threads, the shape and dimensional accuracy of the screw-like portion can be accurately measured.
  • the teeth of the workpiece gear are not machined at the strip relief portion.
  • all teeth are machined while the work gear rotates.
  • all teeth can be machined by shifting the tooth part that is not machined in the first machining from the strip relief part and performing the second machining.
  • the strip relief part has a shape in which some of the plurality of thread threads are eliminated, For example, it may have a shape in which one of the three threads is eliminated.
  • every other thread with an even number (2, 4, 6 ...) of pitch ⁇ mx It is desirable that all the screw threads of the screw-like portion are formed at equal intervals with a pitch of 2 ⁇ mx in the axial direction by adopting the lost shape.
  • the present invention even when machining a work gear with a small module, it is possible to provide a relatively wide relief portion between the threads of the threaded electrodeposition tool.
  • a general truing grindstone with a thick grinding part By inserting a general truing grindstone with a thick grinding part into the relief part, truing of the screw-like part can be performed reliably.
  • the measuring element for measuring the shape and dimensions of the base metal before electrodeposition and the screw-like part after electrodeposition can be easily inserted into the strip relief part, it is easy to perform accurate measurement.
  • FIG. 3 is a ZZ cross-sectional view in FIG. 1. It is an expanded sectional view along the axis line of the screw-shaped part of embodiment shown in FIG. It is a figure which shows one Embodiment of the gear processing method of this invention which processes a to-be-cut gear according to embodiment shown in FIG.
  • FIG. 8 is a cross-sectional view corresponding to the ZZ cross-sectional view in FIG. 1, showing a first modification of the embodiment shown in FIG. 1.
  • FIG. 10 is a cross-sectional view corresponding to the ZZ cross-sectional view in FIG. 1 showing a second modification of the embodiment shown in FIG. 1. It is an expanded sectional view in alignment with the axis line of the screw-shaped part of the conventional screw-shaped electrodeposition tool.
  • FIG. 1 shows a threaded electrodeposition tool according to an embodiment of the present invention.
  • This screw-shaped electrodeposition tool has a base plate 11 having a substantially multi-stage columnar shape made of steel or the like, and a screw-like portion 13 is formed on the outer periphery of the base plate 11.
  • the screw-like portion 13 has one or a plurality of threads 12 that are spirally twisted around the axis O of the base metal 11, and an abrasive layer is formed over the entire surface of the screw-like portion 13.
  • abrasive grains made of superabrasive grains such as cBN and diamond are electrodeposited onto the surface of the screw-like portion 13 in a substantially single layer by a metal plating layer such as Ni. Further, the abrasive grain layer is subjected to truing or semi-truing which removes excess abrasive grains only attached to the surface of the metal plating layer by electrodeposition in the same manner as truing.
  • a mounting hole 14 having a circular cross section that penetrates along the axis O is formed at the center of the base metal 11.
  • Both end portions 15 of the base metal 11 have a cylindrical shape with an outer diameter smaller than the diameter of the valley between the screw threads 12 of the screw-shaped portion 13 over a certain width.
  • a pair of key grooves 16 extending in the radial direction are formed symmetrically about the axis O.
  • An abrasive layer is not formed on the surfaces (outer peripheral surface and end surface) of both end portions 15.
  • the threaded electrodeposition tool is rotated about the axis O integrally with the rotation shaft by inserting a rotation shaft (not shown) into the mounting hole 14 and a key provided on the rotation shaft meshes with the key groove 16. Then, as shown in FIG. 5, it is used for tooth profile grinding of the work gear W.
  • the pitch of the screw threads 12 is set to 2 ⁇ mx, so that the relief portions 17 are formed between the screw threads 12.
  • the screw-like portion 13 in the present embodiment is a screw having two threads 2 having a pitch of ⁇ mx with respect to the module m of the gear to be cut, such as the conventional screw-shaped electrodeposition tool shown in FIG. As shown in FIG. 1 to FIG. 3 by hatching and as shown by broken lines in FIG. 4 and FIG.
  • the shape is lost, that is, recessed.
  • a portion corresponding to the removed screw thread 2 is a strip relief portion 17, and a pitch of the remaining screw thread 12 is 2 ⁇ mx.
  • the thread 2 may be formed once in the base 11 and then removed so as to be scraped off, and then the abrasive grains may be electrodeposited. As will be described later, the thread 2 is not provided from the beginning. Abrasive grains may be electrodeposited after processing the base 11 into a shape.
  • FIG. 5 shows an embodiment of the gear machining method of the present invention.
  • the thread 12 of the screw-like portion 13 is engaged with the teeth of the work gear W, and the base 11 is rotated around the axis O.
  • the work gear W is also rotated in synchronism around the center line X, and is cut by the incision by the abrasive layer.
  • the teeth of the work gear W are processed with the tooth surfaces facing each other adjacent teeth meshing with every other thread 12 in this embodiment.
  • the gear grinding machine may be input with the number of threads before the thread 2 is released as a threaded electrodeposition tool, and the tool mounting angle may be the same as that before the thread 2 is released.
  • the tooth surface of the work gear W positioned at the strip relief portion 17 is not ground because the meshing thread 12 is released, but if the number of teeth of the work gear W is an odd number, the work gear When W makes one rotation around the center line X, it meshes with the thread 12 and, as a result, the tooth surfaces of all the teeth of the work gear W are ground. Further, when the number of teeth of the work gear W is an even number, after the processing of the corresponding tooth surfaces of every other tooth is finished, the tooth meshing with the screw thread 12 is shifted by one and the processing is performed again. That's fine.
  • the strip relief portion 17 is formed in the screw-shaped portion 13, it is possible to ensure a large interval in the axis O direction and the circumferential direction of the adjacent screw threads 12. For this reason, even when the module m of the work gear W is as small as 1 or less, for example, truing or semi-truing is applied to the threaded portion 13 on which the abrasive grains are electrodeposited. Without using a truing grindstone with a very thin wall thickness and a low rigidity, it is possible to reliably and easily insert a truing grindstone with a thick grinding part and a high rigidity into the escape part 17, and A threaded electrodeposition tool can be manufactured by truing with high accuracy.
  • the strip relief portion 17 is one of the even two threads 12 and 2 having a pitch of ⁇ mx with respect to the module m of the work gear W as described above. 2, and the remaining screw threads 12 are formed at equal intervals in the direction of the axis O at a pitch of 2 ⁇ mx. If formed, for example, one of the three threads 12, 2 having a pitch of ⁇ mx may be released to form the thread relief portion 17. In the strip relief portion 17, truing can be surely and easily performed, and measurement with high accuracy can be performed.
  • the pitch of the remaining two threads 12 remains ⁇ mx, which makes truing and measurement difficult, and is therefore processed by such a screw-shaped electrodeposition tool. Since there is a possibility that the processing accuracy of the tooth surface may vary in the work gear, as in the present embodiment, the shape in which every other screw thread 2 of the even number of screw threads 12 and 2 with a pitch ⁇ mx is eliminated, It is desirable that the remaining screw threads 12 are formed at equal intervals in the direction of the axis O with a pitch of 2 ⁇ mx.
  • the remaining thread 12 is moved in the direction of the axis O.
  • the pitch is 2 ⁇ mx.
  • every other two threads 2 are eliminated to form a thread relief 17, and a thread relief 13 is formed on a thread 13 having six threads 12, 2.
  • every other three threads 2 are eliminated to form the strip relief portion 17.
  • the strip relief portion 17 since the strip relief portion 17 does not participate in the machining of the work gear W, for example, masking is performed when electrodepositing abrasive grains so that the abrasive grain layer is not formed. Good. Further, in the above-described embodiment, the strip relief portion 17 has a shape in which every other screw thread 2 is removed by scraping to the diameter of the thread root of the screw-like portion 13 with respect to the screw thread 12 as described above. That is, it is formed so as to form a cylindrical surface centered on the axis O, but since the strip relief portion 17 is not involved in processing, the cross section along the axis O is formed to be recessed toward the inner peripheral side. Alternatively, as long as the truing and measurement are not hindered as long as they are not involved in processing, a slightly convex portion may be left on the outer peripheral side.
  • a threaded electrodeposition tool having a threaded portion 13 in which a plurality of threads 12 and 2 are formed at a pitch of ⁇ mx or a base 11 is formed in advance, and the thread 2
  • the strip relief portion 17 is formed by scraping only the electrode, and abrasive grains are electrodeposited on a base metal 11 in which only the thread 12 is formed on the thread-like portion 13 at a pitch of 2 ⁇ mx from the beginning.
  • the relief portion 17 may be formed between the two.
  • a relatively wide strip relief portion can be provided between the threads of the threaded electrodeposition tool.
  • a typical truing grindstone into the strip relief portion, it becomes possible to reliably perform truing of the screw-like portion.
  • the measuring element for measuring the shape and dimensions of the base metal before electrodeposition and the screw-like part after electrodeposition can be easily inserted into the strip relief part, it is easy to perform accurate measurement. Therefore, it has industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

L'invention concerne un outil d'électrodéposition fileté et un procédé de traitement de pignon utilisant ledit outil d'électrodéposition fileté. Ledit outil permet d'exécuter un dressage même avec une meuleuse à partie de meulage épaisse, et de mesurer avec précision et exactitude un métal de base (11) ou une partie filetée post-dressage (13). La partie filetée (13), qui est torsadée en spirale sur un axe, est formée sur la surface périphérique extérieure du métal de base (11) qui est entraîné en rotation sur l'axe, et une couche à grains abrasifs est formée sur la surface de la partie filetée (13) par dépôt électrolytique de grains abrasifs au moyen d'une couche de placage métallique. Une plage inférieure (17) est formée dans la partie filetée (13) par réglage du pas d'une plage supérieure (12) de la partie filetée (13) à 2 ?mx lorsqu'un module axial de la partie filetée (13) est réglé à mx(mx=m/cos?), m représente un module normal de pignon à meuler, et ? représente un angle de filet sur un cylindre de référence (P) de la partie filetée (13).
PCT/JP2011/055726 2010-03-12 2011-03-11 Outil d'électrodéposition fileté et procédé de traitement de pignon utilisant outil d'électrodéposition fileté Ceased WO2011111808A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010055961A JP2011189434A (ja) 2010-03-12 2010-03-12 ネジ状電着工具および該ネジ状電着工具を用いた歯車加工方法
JP2010-055961 2010-03-12

Publications (1)

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WO2011111808A1 true WO2011111808A1 (fr) 2011-09-15

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WO (1) WO2011111808A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3020495A4 (fr) * 2013-07-10 2017-03-29 Nitolex Corporation Corps de polissage à utiliser pour un engrenage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10857652B2 (en) * 2015-07-17 2020-12-08 Honda Motor Co., Ltd. Electroplated tool, screw-shaped grindstone for grinding gear, method for manufacturing electroplated tool, and method for manufacturing screw-shaped grindstone for grinding gear

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE652256C (de) * 1935-07-02 1937-10-28 Herbert Lindner Schleifschnecke zum Abwaelzschleifen von Zahnraedern
JP2003266241A (ja) * 2002-03-15 2003-09-24 Seiwa Tekko Kk 歯車加工方法及び工具成形方法
JP2007098527A (ja) * 2005-10-06 2007-04-19 Mitsubishi Materials Kobe Tools Corp ネジ状電着工具及びネジ状電着工具の釣合い調整方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE652256C (de) * 1935-07-02 1937-10-28 Herbert Lindner Schleifschnecke zum Abwaelzschleifen von Zahnraedern
JP2003266241A (ja) * 2002-03-15 2003-09-24 Seiwa Tekko Kk 歯車加工方法及び工具成形方法
JP2007098527A (ja) * 2005-10-06 2007-04-19 Mitsubishi Materials Kobe Tools Corp ネジ状電着工具及びネジ状電着工具の釣合い調整方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3020495A4 (fr) * 2013-07-10 2017-03-29 Nitolex Corporation Corps de polissage à utiliser pour un engrenage
US9656338B2 (en) 2013-07-10 2017-05-23 Nitolex Corporation Gear grinding unit

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