JP2007331077A - Involute spline broach - Google Patents

Involute spline broach Download PDF

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Publication number
JP2007331077A
JP2007331077A JP2006167605A JP2006167605A JP2007331077A JP 2007331077 A JP2007331077 A JP 2007331077A JP 2006167605 A JP2006167605 A JP 2006167605A JP 2006167605 A JP2006167605 A JP 2006167605A JP 2007331077 A JP2007331077 A JP 2007331077A
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spline
broach
involute spline
diameter
involute
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JP2006167605A
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Japanese (ja)
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Akira Izawa
晃 井沢
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Nachi Fujikoshi Corp
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Nachi Fujikoshi Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an involute spline broach having a round cutting edge part for drilling an involute spline hole behind an involute spline cutting edge part and capable of improving concentricity of the center of a front drilled hole of the broach with spline large diameter and spline small diameter of a workpiece after broaching. <P>SOLUTION: This involute spline broach 1 having the round cutting edge part 4 for drilling the involute spline hole behind the involute spline cutting edge part 2 is provided with an intermediate guide part 3 for cutting no same diameter as diameter of the front drilled hole of the broach between the spline cutting edge part 2 and the round cutting edge part 4. Length L in the axial direction of the intermediate guide part 3 is set to be larger than the length of cut workpiece. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、インボリュートスプラインブローチの改良に関する。   The present invention relates to an improvement of an involute spline broach.

従来のインボリュートスプライン穴を加工するとき、ワークのスプライン大径とスプライン小径即ちインボリュートスプライン穴径との同芯度を向上させるため、例えば特許文献１に開示する、図１（ｂ）に示すように、インボリュートスプライン刃部 2の後にインボリュートスプライン穴を加工する丸刃部 4を有するインボリュートスプラインブローチ10とするか、又は、ワークのスプライン大径とスプライン小径とを同時に切削するように、各インボリュートスプライン刃の後にインボリュートスプライン穴を加工する丸刃を交互にかつ両者の刃のピッチを各インボリュートスプライン刃のピッチより少なくして設けたインボリュートスプラインブローチが採用された。
特開平７−１６４２４１号公報 When machining a conventional involute spline hole, in order to improve the concentricity between the workpiece spline large diameter and the spline small diameter, that is, the involute spline hole diameter, for example, as shown in FIG. The involute spline blade part 2 has an involute spline broach 10 having a round blade part 4 for machining an involute spline hole after the involute spline blade part 2, or each involute spline blade so as to cut the workpiece spline large diameter and spline small diameter simultaneously. After that, an involute spline broach provided with alternating round blades for machining involute spline holes and with the pitch of both blades smaller than the pitch of each involute spline blade was adopted.
JP-A-7-164241

一般に、ブローチ加工後のワークのスプライン小径を基準にして後加工が施行されることが多く、ブローチの前加工穴中心と、ワークのスプライン大径及びスプライン小径との同芯度は重要である。しかしながら、特許文献１のインボリュートスプライン刃部の後にインボリュートスプライン穴を加工する丸刃部を有するインボリュートスプラインブローチは、再研削が進むと、丸刃部の丸刃加工開始刃の外径が前加工穴最大径より小さくなり、切削せず、ブローチ加工後のワークのスプライン大径とスプライン小径との同芯度が悪くなるという課題があった。又上記した各インボリュートスプライン刃の後にインボリュートスプライン穴を加工する丸刃を交互に設けたものでは、ブローチの同時切削刃数が少なくなるためブローチ加工後のワークのスプライン大径とスプライン小径との同芯度が悪くなり採用できなかった。   Generally, post-processing is often performed on the basis of the small spline diameter of the workpiece after broaching, and the concentricity between the center of the pre-processed hole of the broach and the large spline diameter and small spline diameter of the workpiece is important. However, in the involute spline broach having a round blade portion for machining an involute spline hole after the involute spline blade portion of Patent Document 1, the outer diameter of the round blade processing start blade of the round blade portion becomes the pre-machined hole when regrinding proceeds. There is a problem that the concentricity between the spline large diameter and the spline small diameter of the workpiece after broaching is deteriorated because it is smaller than the maximum diameter and is not cut. In addition, in the case where round blades for machining involute spline holes are provided after each involute spline blade described above, the number of simultaneous cutting blades of the broach is reduced, so the spline large diameter and spline small diameter of the workpiece after broaching are the same. The core became bad and could not be used.

本発明の課題は前述した課題に鑑みて、ブローチの前加工穴中心と、ブローチ加工後のワークのスプライン大径及びスプライン小径との同芯度を向上させたインボリュートスプラインブローチを提供することである。   In view of the above-described problems, an object of the present invention is to provide an involute spline broach in which the concentricity between the center of the pre-processed hole of the broach and the spline large diameter and spline small diameter of the work after broaching is improved. .

このため本発明はインボリュートスプライン刃部の後にインボリュートスプライン穴を加工する丸刃部を有するインボリュートスプラインブローチにおいて、前記スプライン刃部と前記丸刃部との間にブローチの前加工穴径と同径の切削を行わない中間案内部を設け、かつ前記中間案内部の軸方向長さをワーク切削長より長くしたことを特徴とするインボリュートスプラインブローチを提供することにより上記課題を解決した。   Therefore, the present invention provides an involute spline broach having a round blade portion for machining an involute spline hole after the involute spline blade portion, and having the same diameter as the diameter of the pre-machined hole of the broach between the spline blade portion and the round blade portion. The above-mentioned problem has been solved by providing an involute spline broach characterized in that an intermediate guide portion that does not perform cutting is provided and the axial length of the intermediate guide portion is longer than the workpiece cutting length.

本発明では、インボリュートスプライン刃部と丸刃部との間にブローチの前加工穴最大径と同径の切削を行わない中間案内部を設け、かつ前記中間案内部の軸方向長さをワーク切削長より長くしたので、丸刃部によるインボリュートスプライン穴を加工時に、ワークはスプライン刃部から完全に抜け、スプライン刃部の中心位置の影響を受けず、ブローチの前加工穴径と同径の中間案内部がこれにならう状態で切削が継続されるので、ブローチの前加工穴中心と、ブローチ加工後のワークのスプライン大径及びスプライン小径との同芯度を向上させたインボリュートスプラインブローチを提供するものとなった。   In the present invention, an intermediate guide portion is provided between the involute spline blade portion and the round blade portion so as not to cut the same diameter as the maximum diameter of the pre-machined hole of the broach, and the axial length of the intermediate guide portion is set to the workpiece cutting length. Since it is longer than the length, when machining involute spline holes with round blades, the workpiece is completely removed from the spline blades and is not affected by the center position of the spline blades. Since the cutting is continued with the guide part conforming to this, we provide an involute spline broach with improved concentricity between the center of the pre-processed hole of the broach and the spline large diameter and spline small diameter of the work after broaching It became something to do.

好ましくは、前記中間案内部の外径は前記ブローチの前加工穴最大径より 0〜20μｍ大きい外径とし、前加工穴に前記中間案内部を圧入させるようにしたことにより、ブローチの前加工穴径に対してブローチの中心が容易に得られ、ブローチ加工後のワークのスプライン大径及びスプライン小径との同芯度をより向上させたインボリュートスプラインブローチを提供するものとなった。   Preferably, the outer diameter of the intermediate guide portion is 0 to 20 μm larger than the maximum diameter of the preprocessed hole of the broach, and the intermediate guide portion is press-fitted into the preprocessed hole so that the preprocessed hole of the broach The center of the broach can be easily obtained with respect to the diameter, and an involute spline broach in which the concentricity of the spline large diameter and the spline small diameter of the workpiece after broaching is further improved is provided.

本発明本発明の実施の形態についてを図１〜図４を参照して説明する。図１（ａ）は本発明の実施形態を示すインボリュートスプラインブローチの概略側面図、（ｂ）は特許文献１の従来のインボリュートスプラインブローチの概略側面図、図２は図１（ａ）の本発明の実施の形態のインボリュートスプラインブローチによるワーク切削方式を示す拡大部分断面図、図３は図１（ａ）のブローチによるブローチの前加工穴中心０2 とブローチによる加工後のスプライン小径中心０1 との偏芯量を示す説明図、図４は図１（ｂ）の従来のブローチの前加工穴中心０2 とブローチによる加工後のスプライン小径中心０1 との偏芯量を示す説明図である。   Embodiments of the present invention will be described with reference to FIGS. 1A is a schematic side view of an involute spline broach showing an embodiment of the present invention, FIG. 1B is a schematic side view of a conventional involute spline broach disclosed in Patent Document 1, and FIG. 2 is the present invention of FIG. FIG. 3 is an enlarged partial sectional view showing a workpiece cutting method using an involute spline broach according to the embodiment, and FIG. 3 shows a deviation between a center hole 02 of the broached broach by the broach shown in FIG. FIG. 4 is an explanatory diagram showing the amount of eccentricity, and FIG. 4 is an explanatory diagram showing the amount of eccentricity between the pre-processed hole center 02 of the conventional broach of FIG. 1B and the spline small-diameter center 01 after processing by the broach.

本発明の実施の形態のインボリュートスプラインブローチは、図１（ａ）に示すように、インボリュートスプライン刃部 2の後にインボリュートスプライン穴を加工する丸刃部 4を有するインボリュートスプラインブローチ 1において、スプライン刃部 2と丸刃部 4との間にブローチの前加工穴径と同径の切削を行わない中間案内部 3を設け、かつ中間案内部 3の軸方向長さＬをワーク切削長より長くしたものである。Ｐは各インボリュートスプライン刃のピッチである。図２に図１（ａ）の本発明の実施の形態のインボリュートスプラインブローチによるワーク 5の切削方式を示す拡大部分断面図で、6 はスプライン刃部 2による外径上がり切削部分、7 は丸刃部 4による小径切削部分、8 は中間案内部 3による案内線、ｂは前加工穴径、をそれぞれ示す。   An involute spline broach according to an embodiment of the present invention includes an involute spline broach 1 having a round blade portion 4 for machining an involute spline hole after an involute spline blade portion 2 as shown in FIG. An intermediate guide 3 that does not cut the same diameter as the diameter of the pre-machined hole of the broach is provided between 2 and the round blade 4 and the axial length L of the intermediate guide 3 is longer than the workpiece cutting length. It is. P is the pitch of each involute spline blade. FIG. 2 is an enlarged partial sectional view showing a cutting method of the workpiece 5 by the involute spline broach according to the embodiment of the present invention shown in FIG. 1 (a), wherein 6 is a cutting portion whose outer diameter is increased by the spline blade portion 2, and 7 is a round blade. A small-diameter cut portion by the portion 4, 8 indicates a guide line by the intermediate guide portion 3, and b indicates a pre-processed hole diameter.

本発明の実施の形態のインボリュートスプラインブローチは、かかる構成により、スプライン刃部 2と丸刃部 4との間にブローチの前加工穴径と同径の切削を行わない中間案内部 3を設け、かつ中間案内部 3の軸方向長さＬをワーク切削長より長くしたので、丸刃部 4によるインボリュートスプライン穴を加工時に、ワークはスプライン刃部 2から完全に抜け、スプライン刃部 2の中心位置の影響を受けず、ブローチの前加工穴径と同径の中間案内部 3がこれにならう状態で切削が継続されるので、図３に示すように、ブローチの前加工穴中心０2 と、ブローチ加工後のワークのスプライン大径及びスプライン小径０1 との同芯度を向上させたインボリュートスプラインブローチを提供するものとなった。図４に図１（ｂ）の従来のブローチの前加工穴中心０2 とブローチによる加工後のスプライン小径中心０1 との偏芯量Ｅ1 を示す。   The involute spline broach according to the embodiment of the present invention is provided with an intermediate guide portion 3 that does not perform cutting of the same diameter as the diameter of the pre-processed hole of the broach between the spline blade portion 2 and the round blade portion 4 due to such a configuration. And since the axial length L of the intermediate guide 3 is longer than the workpiece cutting length, when machining the involute spline hole with the round blade 4, the workpiece is completely removed from the spline blade 2 and the center position of the spline blade 2 Since the cutting is continued with the intermediate guide portion 3 having the same diameter as the diameter of the pre-processed hole of the broach in accordance with this, as shown in FIG. An involute spline broach with improved concentricity with the spline large diameter and spline small diameter 01 after broaching is provided. FIG. 4 shows the amount of eccentricity E1 between the center hole 02 of the pre-processed broach of FIG. 1 (b) and the center 01 of the small spline diameter after processing by the broach.

好ましくは、中間案内部 4の外径はブローチの前加工穴最大径より 0〜20μｍ大きい外径とし、前加工穴に前記中間案内部 4を圧入させるようにしたことにより、ブローチの前加工穴径に対してブローチの中心が容易に得られ、ブローチの前加工穴中心とブローチ加工後のワークのスプライン大径及びスプライン小径との同芯度をより向上させたインボリュートスプラインブローチを提供するものとなった。   Preferably, the outer diameter of the intermediate guide part 4 is 0 to 20 μm larger than the maximum diameter of the pre-processed hole of the broach, and the intermediate guide part 4 is press-fitted into the pre-processed hole, so that the pre-processed hole of the broach An involute spline broach in which the center of the broach is easily obtained with respect to the diameter, and the concentricity of the center of the pre-processed hole of the broach and the spline large diameter and spline small diameter of the work after broaching is further improved is provided. became.

（ａ）は本発明の実施形態を示すインボリュートスプラインブローチの概略側面図、（ｂ）は特許文献１の従来のインボリュートスプラインブローチの概略側面図。(A) is a schematic side view of the involute spline broach which shows embodiment of this invention, (b) is a schematic side view of the conventional involute spline broach of patent document 1. FIG. 図１（ａ）の本発明の実施の形態のインボリュートスプラインブローチによるワーク切削方式を示す拡大部分断面図である。It is an expanded fragmentary sectional view which shows the workpiece cutting system by the involute spline broach of embodiment of this invention of Fig.1 (a). 図１（ａ）のブローチによる加工後の小径中心とブローチの前加工穴中心との偏芯量を示す説明図。Explanatory drawing which shows the eccentric amount of the small diameter center after a process by the broach of Fig.1 (a), and the center of the pre-processed hole of a broach. 図１（ｂ）の従来のブローチによる加工後の小径中心０1 とブローチの前加工穴中心０2 との偏芯量を示す説明図である。It is explanatory drawing which shows the amount of eccentricity of the small diameter center 01 after the process by the conventional broach of FIG.1 (b), and the front process hole center 02 of a broach.

符号の説明Explanation of symbols

1 ：インボリュートスプラインブローチ、2 ：インボリュートスプライン刃部
3 ：中間案内部、4 ：丸刃部 Ｌ：中間案内部の軸方向長さ
1: Involute spline broach, 2: Involute spline blade
3: Intermediate guide, 4: Round blade L: Axial length of the intermediate guide

Claims (2)

インボリュートスプライン刃部の後にインボリュートスプライン穴を加工する丸刃部を有するインボリュートスプラインブローチにおいて、前記スプライン刃部と前記丸刃部との間にブローチの前加工穴径と同径の切削を行わない中間案内部を設け、かつ前記中間案内部の軸方向長さをワーク切削長より長くしたことを特徴とするインボリュートスプラインブローチ。   In an involute spline broach having a round blade portion for machining an involute spline hole after the involute spline blade portion, an intermediate that does not cut the same diameter as the diameter of the pre-machined hole of the broach between the spline blade portion and the round blade portion. An involute spline broach characterized in that a guide portion is provided and the axial length of the intermediate guide portion is longer than the workpiece cutting length. 前記中間案内部の外径は前記ブローチの前加工穴最大径より 0〜20μｍ大きい外径とし、前加工穴に前記中間案内部を圧入させるようにしたことを特徴とする請求項１記載のインボリュートスプラインブローチ。
2. The involute according to claim 1, wherein an outer diameter of the intermediate guide portion is set to an outer diameter that is 0 to 20 μm larger than a maximum diameter of a pre-processed hole of the broach, and the intermediate guide section is press-fitted into the pre-processed hole. Spline brooch.
JP2006167605A 2006-06-16 2006-06-16 Involute spline broach Pending JP2007331077A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102009233A (en) * 2010-10-21 2011-04-13 江苏盐城市建民工具有限公司 Involute spline push broach
CN102266978A (en) * 2011-07-20 2011-12-07 重庆市江汇机械有限责任公司 Secondary broaching cutting tool for big and small diameters of inner ring gear of synchronizer
CN102266980A (en) * 2011-07-20 2011-12-07 重庆市江汇机械有限责任公司 Secondary broaching cutting tool for big diameter of inner ring gear of synchronizer
JP2014091194A (en) * 2012-11-02 2014-05-19 Mitsubishi Materials Corp Broach
CN104191036A (en) * 2014-08-12 2014-12-10 金华市红太阳工具厂 Special-shaped hole broach and machining process method thereof
CN104551214A (en) * 2014-12-31 2015-04-29 苏州欧美克合金工具有限公司 Combined hard alloy broach
CN106216766A (en) * 2016-08-17 2016-12-14 成都格润特高新材料有限公司 A kind of combined air-conditioner compresser cylinder vane slot broaching tool and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06143024A (en) * 1992-10-27 1994-05-24 Natl Broach & Mach Co Broach and method of broaching
JPH07164241A (en) * 1993-12-15 1995-06-27 Mitsubishi Heavy Ind Ltd Constant cutting force broach

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06143024A (en) * 1992-10-27 1994-05-24 Natl Broach & Mach Co Broach and method of broaching
JPH07164241A (en) * 1993-12-15 1995-06-27 Mitsubishi Heavy Ind Ltd Constant cutting force broach

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102009233A (en) * 2010-10-21 2011-04-13 江苏盐城市建民工具有限公司 Involute spline push broach
CN102266978A (en) * 2011-07-20 2011-12-07 重庆市江汇机械有限责任公司 Secondary broaching cutting tool for big and small diameters of inner ring gear of synchronizer
CN102266980A (en) * 2011-07-20 2011-12-07 重庆市江汇机械有限责任公司 Secondary broaching cutting tool for big diameter of inner ring gear of synchronizer
JP2014091194A (en) * 2012-11-02 2014-05-19 Mitsubishi Materials Corp Broach
CN104191036A (en) * 2014-08-12 2014-12-10 金华市红太阳工具厂 Special-shaped hole broach and machining process method thereof
CN104551214A (en) * 2014-12-31 2015-04-29 苏州欧美克合金工具有限公司 Combined hard alloy broach
CN106216766A (en) * 2016-08-17 2016-12-14 成都格润特高新材料有限公司 A kind of combined air-conditioner compresser cylinder vane slot broaching tool and preparation method thereof
CN106216766B (en) * 2016-08-17 2018-08-24 成都格润特高新材料有限公司 A kind of combined air-conditioner compresser cylinder sliding vane groove broaching tool and preparation method thereof

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