JP2015178121A - Shaft holding sleeve and shaft enlargement processing machine, and jig for shaft enlargement processing machine - Google Patents

Shaft holding sleeve and shaft enlargement processing machine, and jig for shaft enlargement processing machine Download PDF

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JP2015178121A
JP2015178121A JP2014056519A JP2014056519A JP2015178121A JP 2015178121 A JP2015178121 A JP 2015178121A JP 2014056519 A JP2014056519 A JP 2014056519A JP 2014056519 A JP2014056519 A JP 2014056519A JP 2015178121 A JP2015178121 A JP 2015178121A
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shaft
shaft holding
holding sleeve
fitting hole
enlargement processing
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JP6427326B2 (en
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義孝 桑原
Yoshitaka Kuwabara
義孝 桑原
森　一樹
Kazuki Mori
一樹 森
充宏 岡本
Mitsuhiro Okamoto
充宏 岡本
多賀司 池田
Takashi Ikeda
多賀司 池田
文昭 生田
Fumiaki Ikuta
文昭 生田
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Neturen Co Ltd
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Neturen Co Ltd
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Priority to JP2014056519A priority Critical patent/JP6427326B2/en
Priority to EP15714685.3A priority patent/EP3119542B1/en
Priority to CN201580014839.3A priority patent/CN106102954A/en
Priority to US15/117,293 priority patent/US20160346828A1/en
Priority to PCT/JP2015/058650 priority patent/WO2015141865A1/en
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Abstract

PROBLEM TO BE SOLVED: To improve workability of shaft enlargement processing.SOLUTION: In shaft enlargement processing for enlarging a part of a shaft material W, a shaft holding sleeve 11, which holds an end of the shaft material W by being inserted into a fitting hole 20 of a pressure device for imposing axial compressive stress on the shaft material W, has at least one air circulation passage 36 that reaches a surface of an exposed part 33 exposed to the outside of the fitting hole 20 from a tip surface on the tip side in the direction of insertion into the fitting hole 20.

Description

本発明は、軸保持スリーブ及び軸肥大加工機、並びに軸肥大加工機用治具に関する。   The present invention relates to a shaft holding sleeve, a shaft enlargement processing machine, and a jig for a shaft enlargement processing machine.

軸材の軸方向の中間部に相対的に大径部を形成する加工方法の一つとして軸肥大加工が知られており、軸肥大加工方法の一例として、軸材に軸圧縮応力を負荷した状態で曲げ角度を付加して軸材を回転させることにより軸材の一部を肥大させ、それにより大径部を形成する方法が知られている。   Shaft enlargement processing is known as one of the processing methods for forming a relatively large diameter portion in the axial middle portion of the shaft material. As an example of the shaft enlargement processing method, axial compression stress is applied to the shaft material. There is known a method of enlarging a part of a shaft material by adding a bending angle in the state and rotating the shaft material, thereby forming a large diameter portion.

そして、上記軸肥大加工方法を行う加工機として、軸材の両端部を保持する一対の軸保持スリーブと、軸保持スリーブが挿入される嵌合孔をそれぞれ有し、軸材が配置される基準線に沿って配置された一対のスピンドルとを備え、一方のスピンドルを基準線に沿って移動させて軸材を軸方向に圧縮しつつ、他方のスピンドルを基準線に対して傾斜させて回転させることにより軸材の一部を肥大させる軸肥大加工機が知られている（例えば、特許文献１参照）。   And as a processing machine which performs the above-mentioned shaft enlargement processing method, it has a pair of shaft holding sleeves which hold both ends of the shaft material, and a fitting hole into which the shaft holding sleeve is inserted, and a reference on which the shaft material is arranged A pair of spindles arranged along a line, and one spindle is moved along the reference line to compress the shaft member in the axial direction, while the other spindle is rotated while being inclined with respect to the reference line. There is known a shaft enlargement processing machine that enlarges a part of a shaft material (see, for example, Patent Document 1).

特開２０１３−１６６１６８号公報JP 2013-166168 A

軸保持スリーブは、例えば軸材の寸法や軸材との接触による損耗に応じて適宜交換されるが、軸保持スリーブがスピンドルの嵌合孔に対して挿抜される際に、嵌合孔の内部に囲われる空気が支障となり、嵌合孔に対する軸保持スリーブの円滑なる挿抜が妨げられていた。   The shaft holding sleeve is appropriately replaced according to, for example, the size of the shaft member and wear due to contact with the shaft member. When the shaft holding sleeve is inserted into and removed from the fitting hole of the spindle, the inside of the fitting hole is replaced. The air surrounded by the hindrance hinders smooth insertion and removal of the shaft holding sleeve from the fitting hole.

本発明は、上述した事情に鑑みなされたものであり、軸肥大加工における作業性を高めることを目的とする。   This invention is made | formed in view of the situation mentioned above, and aims at improving the workability | operativity in a shaft enlargement process.

（１） 軸材の一部を肥大させる軸肥大加工において、軸材に軸圧縮応力を負荷する加圧装置の嵌合孔に挿入されて軸材の端部を保持する軸保持スリーブであって、前記嵌合孔への挿入方向先側の先端面から前記嵌合孔の外に露出する露出部の表面に達する少なくとも一つの空気流通路を有する軸保持スリーブ。
（２） 軸材の両端部をそれぞれ保持する一対の軸保持スリーブと、一対の前記軸保持スリーブがそれぞれ挿入される嵌合孔を有し、一対の前記軸保持スリーブに両端部を保持された軸材を軸方向に圧縮する加圧装置と、一対の前記軸保持スリーブに両端部を保持された軸材の中間部に、該軸材の軸方向と交差する方向に交番負荷を加える負荷発生装置と、を備え、一対の前記軸保持スリーブが上記（１）の軸保持スリーブである軸肥大加工機。
（３） 上記（２）の軸肥大加工機において、前記軸保持スリーブを前記嵌合孔に挿入する際に用いられる軸肥大加工機用治具であって、前記嵌合孔の開口縁部に装着され、前記軸保持スリーブが載置可能で且つ前記嵌合孔の内周面に面一に連なる載置面を有する軸肥大加工機用治具。 (1) A shaft holding sleeve that is inserted into a fitting hole of a pressurizing device that applies a shaft compressive stress to a shaft member and holds an end portion of the shaft member in shaft enlargement processing for enlarging a part of the shaft member. A shaft holding sleeve having at least one air flow passage that reaches the surface of the exposed portion exposed to the outside of the fitting hole from the front end surface in the insertion direction to the fitting hole.
(2) A pair of shaft holding sleeves that respectively hold both ends of the shaft member, and a fitting hole into which the pair of shaft holding sleeves are respectively inserted, and both ends are held by the pair of shaft holding sleeves A pressure generator that compresses the shaft material in the axial direction and a load that applies an alternating load in a direction intersecting the axial direction of the shaft material at the intermediate portion of the shaft material that is held at both ends by the pair of shaft holding sleeves. A shaft enlargement processing machine, wherein the pair of shaft holding sleeves are the shaft holding sleeves of (1) above.
(3) The shaft enlargement processing machine according to (2), wherein the shaft holding sleeve is used when the shaft holding sleeve is inserted into the fitting hole, and is provided at an opening edge of the fitting hole. A jig for a shaft enlargement processing machine which is mounted and has a mounting surface on which the shaft holding sleeve can be mounted and which is continuous with the inner peripheral surface of the fitting hole.

本発明によれば、軸肥大加工における作業性を高めることができる。   According to the present invention, workability in shaft enlargement processing can be enhanced.

本発明の実施形態を説明するための、軸肥大加工方法の一例を模式的に示す図である。It is a figure which shows typically an example of the shaft enlargement processing method for demonstrating embodiment of this invention. 本発明の実施形態を説明するための、軸肥大加工方法の他の例を模式的に示す図である。It is a figure which shows typically the other example of the shaft enlargement processing method for demonstrating embodiment of this invention. 本発明の実施形態を説明するための、軸肥大加工方法の他の例を模式的に示す図である。It is a figure which shows typically the other example of the shaft enlargement processing method for demonstrating embodiment of this invention. 本発明の実施形態を説明するための、軸肥大加工方法の他の例を模式的に示す図である。It is a figure which shows typically the other example of the shaft enlargement processing method for demonstrating embodiment of this invention. 本発明の実施形態を説明するための、軸肥大加工方法の他の例を模式的に示す図である。It is a figure which shows typically the other example of the shaft enlargement processing method for demonstrating embodiment of this invention. 図１の軸肥大加工方法を実施する軸肥大加工機の一例の側面図である。It is a side view of an example of the shaft enlargement processing machine which implements the shaft enlargement processing method of FIG. 図６の軸肥大加工機の軸保持スリーブ及びスピンドルの断面図である。It is sectional drawing of the shaft holding sleeve and spindle of the shaft enlargement processing machine of FIG. 図７の軸保持スリーブの正面図である。FIG. 8 is a front view of the shaft holding sleeve of FIG. 7. 図７の軸保持スリーブの変形例の断面図である。It is sectional drawing of the modification of the shaft holding sleeve of FIG. 図７の軸保持スリーブの他の変形例の側面図である。It is a side view of the other modification of the shaft holding sleeve of FIG. 図７の軸保持スリーブの他の変形例の斜視図である。It is a perspective view of the other modification of the axis | shaft holding sleeve of FIG. 本発明の実施形態を説明するための、軸肥大加工機用治具の一例の側面図である。It is a side view of an example of a jig for a shaft enlargement processing machine for explaining an embodiment of the present invention. 本発明の実施形態を説明するための、軸肥大加工機用治具の他の例の断面図である。It is sectional drawing of the other example of the jig for shaft enlargement processing machines for demonstrating embodiment of this invention. 図１３の軸肥大加工機用治具の正面図である。It is a front view of the jig for shaft enlargement processing machines of FIG.

図１から図５は、本発明の実施形態を説明するための、軸肥大加工方法の種々の例を模式的に示す。   1 to 5 schematically show various examples of a shaft enlargement processing method for explaining an embodiment of the present invention.

図１に示す軸肥大加工方法は、軸材Ｗに軸圧縮応力を負荷した状態で曲げ角度を付加して軸材Ｗを回転させることにより軸材Ｗの一部を肥大させるものである。   The shaft enlargement processing method shown in FIG. 1 enlarges a part of the shaft material W by rotating the shaft material W by adding a bending angle in a state where axial compression stress is applied to the shaft material W.

図１（Ａ）に示すように、軸材Ｗの両端部が、基準線Ａ上にて対向して配置された一対の軸保持スリーブ１ａ，１ｂにそれぞれ挿入される。そして、軸材Ｗの両端部が軸保持スリーブ１ａ，１ｂの底部にそれぞれ当接し、軸材Ｗは一対の軸保持スリーブ１ａ，１ｂによって挟持される。一対の軸保持スリーブ１ａ，１ｂの間には所定の間隔Ｄがあけられ、間隔Ｄは、軸材Ｗに形成される肥大部の軸方向長さ及び外径に応じて決定される。   As shown in FIG. 1A, both end portions of the shaft member W are inserted into a pair of shaft holding sleeves 1a and 1b arranged to face each other on the reference line A. Then, both end portions of the shaft material W are in contact with the bottom portions of the shaft holding sleeves 1a and 1b, respectively, and the shaft material W is sandwiched between the pair of shaft holding sleeves 1a and 1b. A predetermined interval D is provided between the pair of shaft holding sleeves 1a and 1b, and the interval D is determined according to the axial length and the outer diameter of the enlarged portion formed in the shaft member W.

図１（Ｂ）に示すように、軸保持スリーブ１ｂが基準線Ａに沿って並進移動され、一対の軸保持スリーブ１ａ，１ｂによって挟持された軸材Ｗは軸方向に圧縮される。そして、軸保持スリーブ１ａが基準線Ａに対して傾斜され、また、回転駆動され、一対の軸保持スリーブ１ａ，１ｂに挟持された軸材Ｗは、基準線Ａ上の曲げ中心Ｏを中心に曲げられ、且つ軸材Ｗの軸線まわりに回転される。軸材Ｗの曲げ及び回転に伴い、軸材Ｗの湾曲部（中間部）には、曲げ方向における内側と外側とで軸材Ｗの軸方向と交差する方向に交番負荷が加えられる。   As shown in FIG. 1B, the shaft holding sleeve 1b is translated along the reference line A, and the shaft member W sandwiched between the pair of shaft holding sleeves 1a and 1b is compressed in the axial direction. Then, the shaft holding sleeve 1a is inclined with respect to the reference line A and is rotationally driven, and the shaft member W sandwiched between the pair of shaft holding sleeves 1a and 1b is centered on the bending center O on the reference line A. It is bent and rotated around the axis of the shaft W. As the shaft member W is bent and rotated, an alternating load is applied to the curved portion (intermediate portion) of the shaft member W in the direction intersecting the axial direction of the shaft member W on the inner side and the outer side in the bending direction.

図１（Ｃ）に示すように、軸材Ｗは軸方向に圧縮されていることから、軸材Ｗの湾曲部の内側が塑性変形によって膨出し、塑性変形による膨出が全周に亘って成長して軸材Ｗの湾曲部が肥大する。   As shown in FIG. 1C, since the shaft member W is compressed in the axial direction, the inside of the curved portion of the shaft member W swells due to plastic deformation, and the bulge due to plastic deformation extends over the entire circumference. It grows and the curved part of the shaft W is enlarged.

図１（Ｄ）に示すように、一対の軸保持スリーブ１ａ，１ｂの間隔が目標間隔（軸材Ｗの肥大部の軸方向長さ）に到達した後、軸材Ｗの圧縮が停止され、そして、基準線Ａに対して傾斜された軸保持スリーブ１ａが再び基準線Ａに沿って配置されて軸材Ｗが曲げ戻しされる。以上の手順により軸材Ｗに対する肥大加工が完了し、軸材Ｗの回転が停止される。   As shown in FIG. 1D, after the distance between the pair of shaft holding sleeves 1a and 1b reaches the target distance (the axial length of the enlarged portion of the shaft material W), the compression of the shaft material W is stopped, Then, the shaft holding sleeve 1a inclined with respect to the reference line A is disposed again along the reference line A, and the shaft member W is bent back. By the above procedure, the enlargement process for the shaft member W is completed, and the rotation of the shaft member W is stopped.

この後、図１（Ｅ）に示すように、軸材Ｗは一対の軸保持スリーブ１ａ，１ｂから取り外される。   Thereafter, as shown in FIG. 1E, the shaft member W is detached from the pair of shaft holding sleeves 1a and 1b.

図２に示す軸肥大加工方法は、軸材Ｗの曲げ及び軸線まわりの回転によって軸材Ｗの湾曲部（中間部）に交番負荷を加える点で図１の軸肥大加工方法と共通するが、一方の軸保持スリーブ１ａの基準線Ａに対する傾動に替えて、基準線Ａと交差する方向への軸保持スリーブ１ａのスライドにより、軸材Ｗを曲げるようにしたものである。   The shaft enlargement processing method shown in FIG. 2 is common to the shaft enlargement processing method of FIG. 1 in that an alternating load is applied to the curved portion (intermediate portion) of the shaft member W by bending and rotating around the shaft member W. Instead of tilting the shaft holding sleeve 1a with respect to the reference line A, the shaft member W is bent by sliding the shaft holding sleeve 1a in a direction intersecting the reference line A.

図３に示す軸肥大加工方法は、一方の軸保持スリーブ１ａにて軸材Ｗの端部を回転可能に非拘束状態にて保持し、他方の軸保持スリーブ１ｂにて軸材Ｗの端部を回転不能に拘束状態にて保持し、軸保持スリーブ１ａ及びこの軸保持スリーブ１ａに保持された軸材Ｗの端部を基準線Ａまわりに旋回させることにより、軸材Ｗを曲げ、且つ軸材Ｗの湾曲部（中間部）に交番負荷を加えるようにしたものである。   In the shaft enlargement processing method shown in FIG. 3, the end of the shaft member W is rotatably held in an unconstrained state by one shaft holding sleeve 1a, and the end of the shaft member W is held by the other shaft holding sleeve 1b. Is held in a non-rotatable restrained state, and the shaft holding sleeve 1a and the end portion of the shaft material W held by the shaft holding sleeve 1a are turned around the reference line A, whereby the shaft material W is bent and the shaft An alternating load is applied to the curved portion (intermediate portion) of the material W.

図４に示す軸肥大加工方法は、軸保持スリーブ１ａ，１ｂの各々にて軸材Ｗの端部を回転不能に拘束状態にて保持し、一方の軸保持スリーブ１ａを基準線Ａまわりに往復回転させることにより、軸材Ｗの中間部に交番負荷を加えるようにしたものである。   In the shaft enlargement processing method shown in FIG. 4, the shaft holding sleeves 1a and 1b each hold the end of the shaft member W in a non-rotatable constrained state, and the one shaft holding sleeve 1a reciprocates around the reference line A. By rotating, an alternating load is applied to the intermediate part of the shaft member W.

図５に示す軸肥大加工方法は、軸保持スリーブ１ａ，１ｂや軸材Ｗの変位や回転に替えて、振動発生器ＯＳＣから軸材Ｗに曲げ又は捻り振動を与えることにより、軸材Ｗの中間部に交番負荷を加えるようにしたものである。   In the shaft enlargement processing method shown in FIG. 5, instead of displacement and rotation of the shaft holding sleeves 1 a and 1 b and the shaft material W, bending or torsional vibration is applied to the shaft material W from the vibration generator OSC, thereby An alternating load is applied to the middle part.

図６は、図１に示した軸肥大加工方法を実施する軸肥大加工機の一例の構成を示す。   FIG. 6 shows a configuration of an example of a shaft enlargement processing machine that performs the shaft enlargement processing method shown in FIG. 1.

図６に示す軸肥大加工機１０は、軸材の端部を保持する一対の軸保持スリーブ１１と、軸材が配置される基準線Ａに沿って互いに離間して配置された一対のホルダユニット１２ａ，１２ｂを備えている。一方のホルダユニット１２ａは、基準線Ａに対して傾動可能に基台１３に支持されており、また、他方のホルダユニット１２ｂは、基準線Ａに沿って移動可能に基台１３に支持されている。   A shaft enlargement processing machine 10 shown in FIG. 6 includes a pair of shaft holding sleeves 11 that hold the end portions of the shaft material, and a pair of holder units that are spaced apart from each other along a reference line A on which the shaft material is disposed. 12a, 12b. One holder unit 12a is supported by the base 13 so as to be tiltable with respect to the reference line A, and the other holder unit 12b is supported by the base 13 so as to be movable along the reference line A. Yes.

ホルダユニット１２ａ，１２ｂは、軸保持スリーブ１１が装着されるスピンドル１４と、スピンドル１４を回転可能に支持するハウジング１５と、軸保持スリーブ１１に挿入された軸材の端部を軸保持スリーブ１１から押し出すためのシリンダ１６とをそれぞれ含んで構成されており、ホルダユニット１２ａ，１２ｂの各々のスピンドル１４は基準線Ａ上に配置されている。   The holder units 12a and 12b include a spindle 14 to which the shaft holding sleeve 11 is mounted, a housing 15 that rotatably supports the spindle 14, and an end of the shaft member inserted into the shaft holding sleeve 11 from the shaft holding sleeve 11. The cylinders 16 for extruding are respectively included, and the spindles 14 of the holder units 12a and 12b are arranged on the reference line A.

そして、軸肥大加工機１０は、ホルダユニット１２ｂを基準線Ａに沿って移動させる並進駆動部１７と、ホルダユニット１２ａを基準線Ａに対して傾斜させる傾動部１８と、ホルダユニット１２ａのスピンドル１４を回転駆動する回転駆動部１９とを備えている。ホルダユニット１２ａ，１２ｂ及び並進駆動部１７によって軸材を軸方向に圧縮する加圧装置が構成され、ホルダユニット１２ａ，１２ｂ、傾動部１８、及び回転駆動部１９によって、軸材の中間部に、この軸材の軸方向（基準線Ａ）と交差する方向に交番負荷を加える負荷発生装置が構成される。   The shaft enlargement processing machine 10 includes a translation drive unit 17 that moves the holder unit 12b along the reference line A, a tilting unit 18 that tilts the holder unit 12a with respect to the reference line A, and a spindle 14 of the holder unit 12a. And a rotation drive unit 19 that rotationally drives the motor. The holder unit 12a, 12b and the translation drive unit 17 constitute a pressurizing device that compresses the shaft material in the axial direction, and the holder units 12a, 12b, the tilting unit 18, and the rotation drive unit 19 are arranged in the middle part of the shaft material. A load generator that applies an alternating load in a direction intersecting the axial direction (reference line A) of the shaft member is configured.

図７及び図８は、軸保持スリーブ１１及びスピンドル１４の構成を示す。   7 and 8 show the configuration of the shaft holding sleeve 11 and the spindle 14.

スピンドル１４には、軸保持スリーブ１１が挿入される嵌合孔２０と、嵌合孔２０に連なるピン挿通孔２１とが設けられている。嵌合孔２０には、軸保持スリーブ１１を受ける受圧板２２が挿嵌されており、受圧板２２は、嵌合孔２０の内部に形成された段差２３に突き当てられて固定されている。ピン挿通孔２１はスピンドル１４の中心軸（基準線Ａ）に沿ってスピンドル１４を貫通して設けられており、このピン挿通孔２１には、シリンダ１６（図６参照）のノックピン２４が挿通されている。   The spindle 14 is provided with a fitting hole 20 into which the shaft holding sleeve 11 is inserted, and a pin insertion hole 21 connected to the fitting hole 20. A pressure receiving plate 22 that receives the shaft holding sleeve 11 is inserted into the fitting hole 20, and the pressure receiving plate 22 is abutted against and fixed to a step 23 formed inside the fitting hole 20. The pin insertion hole 21 is provided through the spindle 14 along the central axis (reference line A) of the spindle 14, and the knock pin 24 of the cylinder 16 (see FIG. 6) is inserted into the pin insertion hole 21. ing.

軸保持スリーブ１１は、軸材の端部を収容する筒部３０と、筒部３０に挿嵌された当金３１と、を有している。筒部３０は、軸保持スリーブ１１がスピンドル１４の嵌合孔２０に挿入された状態で嵌合孔２０に収容される収容部３２と、嵌合孔２０の外に露出する露出部３３とを有している。露出部３３は、収容部３２よりも小径に形成されており、露出部３３と収容部３２との接続部には段差３４が形成されている。当金３１は、軸保持スリーブ１１の底部を構成しており、ノックピン２４によって支持されて軸材の端面を受け、ノックピン２４によって押圧されて軸保持スリーブ１１に挿入された軸材の端部を軸保持スリーブ１１から押し出す。   The shaft holding sleeve 11 includes a cylindrical portion 30 that accommodates an end portion of the shaft member, and a metal 31 that is inserted into the cylindrical portion 30. The cylindrical portion 30 includes an accommodating portion 32 that is accommodated in the fitting hole 20 in a state where the shaft holding sleeve 11 is inserted into the fitting hole 20 of the spindle 14, and an exposed portion 33 that is exposed outside the fitting hole 20. Have. The exposed portion 33 is formed to have a smaller diameter than the accommodating portion 32, and a step 34 is formed at the connecting portion between the exposed portion 33 and the accommodating portion 32. The metal 31 forms the bottom of the shaft holding sleeve 11, is supported by the knock pin 24, receives the end surface of the shaft material, and is pressed by the knock pin 24 to insert the end of the shaft material inserted into the shaft holding sleeve 11. Push out from the shaft holding sleeve 11.

スピンドル１４の嵌合孔２０に挿入された軸保持スリーブ１１は、嵌合孔２０が開口しているスピンドル１４の開口端部に締結されるフランジパイプ３５によって筒部３０の段差３４が押さえ込まれ、スピンドル１４に固定される。   In the shaft holding sleeve 11 inserted into the fitting hole 20 of the spindle 14, the step 34 of the cylindrical portion 30 is pressed by the flange pipe 35 fastened to the opening end of the spindle 14 in which the fitting hole 20 is opened. Fixed to the spindle 14.

軸保持スリーブ１１は、軸材の寸法に応じて適宜交換される。また、軸保持スリーブ１１は、軸材に加えられる交番負荷の反力を受けとめ、特に軸保持スリーブ１１の開口部の表面３０ａには比較的大きな負荷が作用する。そのため、軸保持スリーブ１１は、繰り返しの使用によって損耗し、適宜交換される。   The shaft holding sleeve 11 is appropriately replaced according to the dimensions of the shaft material. Further, the shaft holding sleeve 11 receives the reaction force of the alternating load applied to the shaft material, and a relatively large load acts on the surface 30 a of the opening portion of the shaft holding sleeve 11 in particular. Therefore, the shaft holding sleeve 11 is worn out by repeated use and is appropriately replaced.

軸保持スリーブ１１の交換に伴って軸保持スリーブ１１がスピンドル１４の嵌合孔２０に対して挿抜される際に、軸保持スリーブ１１、スピンドル１４、受圧板２２、及びノックピン２４によって嵌合孔２０の内部に空気が囲われるが、軸保持スリーブ１１には、嵌合孔２０の内部と外部とを連通する空気流通路が設けられている。   When the shaft holding sleeve 11 is inserted into and removed from the fitting hole 20 of the spindle 14 with the replacement of the shaft holding sleeve 11, the fitting hole 20 is formed by the shaft holding sleeve 11, the spindle 14, the pressure receiving plate 22, and the knock pin 24. The shaft holding sleeve 11 is provided with an air flow passage that communicates the inside and the outside of the fitting hole 20.

軸保持スリーブ１１の上記空気流通路は、本例では、収容部３２の外周面に形成された溝３６によって構成されている。溝３６は、軸保持スリーブ１１の嵌合孔２０への挿入方向先側（底部側）の先端面から軸保持スリーブ１１の軸方向に沿って延びて設けられており、露出部３３の表面に達している。空気流通路としての溝３６は、少なくとも一つあれば足りるが、図示の例のように、収容部３２の外周面の周方向に間隔をあけて複数設けられていてもよい。   In this example, the air flow passage of the shaft holding sleeve 11 is constituted by a groove 36 formed on the outer peripheral surface of the housing portion 32. The groove 36 is provided so as to extend along the axial direction of the shaft holding sleeve 11 from the front end surface (bottom side) of the shaft holding sleeve 11 in the insertion direction to the fitting hole 20. Has reached. Although at least one groove 36 as an air flow passage is sufficient, a plurality of grooves 36 may be provided at intervals in the circumferential direction of the outer peripheral surface of the accommodating portion 32 as in the illustrated example.

空気流通路としての溝３６がないと、軸保持スリーブ１１が抜去される際には嵌合孔２０の内部が雰囲気圧に対して負圧となり、軸保持スリーブ１１が挿入される際には嵌合孔２０の内部が雰囲気圧に対して正圧となり、軸保持スリーブ１１の円滑な挿抜が妨げられる。これに対し、溝３６によって嵌合孔２０の内部と外部とが連通されていることにより嵌合孔２０の内部は雰囲気圧に保たれ、あるいは雰囲気圧との差圧が低減される。それにより、軸保持スリーブ１１の円滑な挿抜が可能となって軸保持スリーブ１１の交換の作業性を向上させることができ、ひいては軸肥大加工における作業性を高めることができる。   Without the groove 36 as an air flow passage, the inside of the fitting hole 20 becomes negative with respect to the atmospheric pressure when the shaft holding sleeve 11 is removed, and the shaft holding sleeve 11 is fitted when the shaft holding sleeve 11 is inserted. The inside of the joint hole 20 becomes a positive pressure with respect to the atmospheric pressure, and the smooth insertion and removal of the shaft holding sleeve 11 is prevented. On the other hand, the inside of the fitting hole 20 is communicated with the outside by the groove 36, whereby the inside of the fitting hole 20 is maintained at the atmospheric pressure or the differential pressure from the atmospheric pressure is reduced. Accordingly, the shaft holding sleeve 11 can be smoothly inserted and removed, and the workability of replacing the shaft holding sleeve 11 can be improved. As a result, the workability in the shaft enlargement process can be improved.

なお、軸保持スリーブ１１の空気流通路は、軸保持スリーブ１１の嵌合孔２０への挿入方向先側の先端面から露出部３３の表面に達している限りにおいて溝３６に限定されるものではない。例えば図９に示すように、軸保持スリーブ１１の先端面から反対側の端面に達する貫通孔３７によって空気流通路を構成することもできる。   The air flow passage of the shaft holding sleeve 11 is not limited to the groove 36 as long as it reaches the surface of the exposed portion 33 from the distal end surface in the insertion direction of the shaft holding sleeve 11 into the fitting hole 20. Absent. For example, as shown in FIG. 9, the air flow passage can be configured by a through hole 37 that reaches the end surface on the opposite side from the tip surface of the shaft holding sleeve 11.

また、図１０に示すように、吊金具３８が着脱可能に締結される装着部３９を軸保持スリーブ１１の外周面に設けてもよい。軸保持スリーブ１１は、保持する軸材にもよるが大きな物では６０ｋｇ程度の重量を有し、比較的重量物であるところ、吊金具３８を介して軸保持スリーブ１１を吊ることにより、軸保持スリーブ１１の交換作業における作業者の負担を軽減することができる。それにより、軸保持スリーブ１１の交換の作業性を一層向上させることができる。   In addition, as shown in FIG. 10, a mounting portion 39 to which the hanging bracket 38 is detachably fastened may be provided on the outer peripheral surface of the shaft holding sleeve 11. The shaft holding sleeve 11 has a weight of about 60 kg depending on the shaft material to be held, and has a weight of about 60 kg. The shaft holding sleeve 11 is a relatively heavy item. The burden on the operator in the replacement work of the sleeve 11 can be reduced. Thereby, the workability | operativity of replacement | exchange of the shaft holding sleeve 11 can be improved further.

また、図６及び図７に示した例では、軸保持スリーブ１１をスピンドル１４に固定するフランジパイプ３５が軸保持スリーブ１１の筒部３０とは別体に構成されているが、図１１に示すように、筒部３０にフランジ部４０を一体に設けてもよく、その場合に、フランジ部４０に把持部としてのハンドル４１を設けることもできる。ハンドル４１があることにより、スピンドル１４の嵌合孔２０に対する軸保持スリーブの挿抜操作が容易となり、軸保持スリーブの交換の作業性を一層向上させることができる。   In the example shown in FIGS. 6 and 7, the flange pipe 35 that fixes the shaft holding sleeve 11 to the spindle 14 is formed separately from the cylindrical portion 30 of the shaft holding sleeve 11. As described above, the flange portion 40 may be provided integrally with the cylindrical portion 30, and in this case, a handle 41 as a gripping portion may be provided on the flange portion 40. With the handle 41, the shaft holding sleeve can be easily inserted into and removed from the fitting hole 20 of the spindle 14, and the workability of replacing the shaft holding sleeve can be further improved.

また、軸材との接触による軸保持スリーブ１１の損耗を抑制するために、軸保持スリーブ１１の材料として硬質な材料を用いることが好ましい。軸保持スリーブ１１の損耗を抑制することにより、軸保持スリーブ１１の交換頻度を低くすることができ、軸肥大加工における作業性を高めることができる。   Further, in order to suppress wear of the shaft holding sleeve 11 due to contact with the shaft material, it is preferable to use a hard material as the material of the shaft holding sleeve 11. By suppressing the wear of the shaft holding sleeve 11, the replacement frequency of the shaft holding sleeve 11 can be lowered, and the workability in shaft enlargement processing can be improved.

軸保持スリーブ１１を形成する母材としては、ロックウェル硬さ（ＪＩＳ Ｇ ０２０２）ＨＲＣ５８以上のものを好適に用いることができ、ＳＫＤ１１等のダイス鋼や、ＳＫＨ５１等のハイス鋼や、セミハイス鋼などを例示することができる。   As the base material for forming the shaft holding sleeve 11, those having Rockwell hardness (JIS G 0202) HRC58 or higher can be suitably used, such as die steel such as SKD11, high-speed steel such as SKH51, semi-high-speed steel, etc. Can be illustrated.

さらに、軸保持スリーブ１１の損耗を抑制する観点から、軸保持スリーブ１１に表面硬化処理を施してもよく、表面硬化処理が施される場合に、表面性状はビッカース硬さ（ＪＩＳ Ｚ ２２４４）ＨＶ１２００以上が好ましく、ＨＶ３０００以上がより好ましく、また平滑であることが好ましい。そのような表面硬化処理としては、バナジウム系皮膜やクロム系皮膜やチタン系皮膜やＤＬＣ（ダイヤモンドライクカーボン）皮膜など皮膜形成、窒化処理、等を例示することができる。   Furthermore, from the viewpoint of suppressing the wear of the shaft holding sleeve 11, the shaft holding sleeve 11 may be subjected to surface hardening treatment. When the surface hardening treatment is performed, the surface property is Vickers hardness (JIS Z 2244) HV1200. The above is preferable, HV3000 or more is more preferable, and smoothness is preferable. Examples of such surface hardening treatment include film formation such as a vanadium-based film, a chromium-based film, a titanium-based film, and a DLC (diamond-like carbon) film, nitriding treatment, and the like.

表面硬化処理は、少なくとも軸保持スリーブ１１の開口部の表面３０ａに施され、開口部の表面３０ａを含む筒部３０の内周面の全体に施されてもよいし、軸保持スリーブ１１の表面全体に施されてもよい。   The surface hardening treatment is applied to at least the surface 30a of the opening of the shaft holding sleeve 11, and may be applied to the entire inner peripheral surface of the cylindrical portion 30 including the surface 30a of the opening, or the surface of the shaft holding sleeve 11 It may be given to the whole.

表面硬化処理として皮膜を形成する場合に、皮膜は、上記列挙した種々の皮膜の単層膜で構成してもよいし１種以上の多層膜で構成してもよい。また、皮膜の形成方法としては、塩浴浸漬法（熱反応析出拡散法）、ＣＶＤ（化学蒸着法）、ＰＶＤ（物理蒸着法）、ＰＣＶＤ（プラズマＣＶＤ法）、等の方法を例示することができる。   When forming a film as the surface hardening treatment, the film may be composed of a single layer film of the various films listed above or may be composed of one or more multilayer films. Examples of the film forming method include salt bath immersion (thermal reaction deposition diffusion method), CVD (chemical vapor deposition method), PVD (physical vapor deposition method), PCVD (plasma CVD method), and the like. it can.

また、軸肥大加工における作業性を高める観点では、軸保持スリーブ１１を交換する際に治具を用いてもよい。   Further, from the viewpoint of improving workability in shaft enlargement processing, a jig may be used when the shaft holding sleeve 11 is replaced.

図１２は、本発明の実施形態を説明するための、軸肥大加工機用治具の一例の構成を示す。   FIG. 12 shows a configuration of an example of a jig for a shaft enlargement processing machine for explaining an embodiment of the present invention.

図１２に示す治具５０は、複数本（図には一本のみ示されている）の円柱状のガイド棒５１によって構成されている。これらのガイド棒５１は、軸保持スリーブ１１のフランジパイプ３５が締結されるスピンドル１４の開口端部のネジ穴のうち、嵌合孔２０の鉛直下側の縁部に位置するネジ孔に締結され、嵌合孔２０の開口縁部に装着されている。   A jig 50 shown in FIG. 12 includes a plurality of (only one is shown in the figure) columnar guide bars 51. These guide rods 51 are fastened to screw holes located at the vertical lower edge of the fitting hole 20 among the screw holes at the opening end of the spindle 14 to which the flange pipe 35 of the shaft holding sleeve 11 is fastened. It is attached to the opening edge of the fitting hole 20.

軸保持スリーブ１１は、複数本のガイド棒５１に跨って、これらのガイド棒５１に載置される。各ガイド棒５１の外周面は、載置された軸保持スリーブ１１に接する外周面の母線に沿って嵌合孔２０の内周面に面一に連なっており、軸保持スリーブ１１は、これらのガイド棒５１上から嵌合孔２０に、また、嵌合孔２０からガイド棒５１上に、円滑に移動される。それにより、軸保持スリーブ１１の挿抜操作が容易となり、軸保持スリーブ１１の交換の作業性を一層向上させることができる。   The shaft holding sleeve 11 is placed on these guide rods 51 across a plurality of guide rods 51. The outer peripheral surface of each guide rod 51 is flush with the inner peripheral surface of the fitting hole 20 along the generatrix of the outer peripheral surface that is in contact with the mounted shaft holding sleeve 11. It is smoothly moved from above the guide rod 51 to the fitting hole 20 and from the fitting hole 20 to the guide rod 51. Thereby, the insertion / extraction operation of the shaft holding sleeve 11 becomes easy, and the workability of exchanging the shaft holding sleeve 11 can be further improved.

また、図示の例では、各ガイド棒５１の先端部に大径のストッパ部５２が設けられており、これらのストッパ部５２は、軸保持スリーブ１１が嵌合孔２０から抜去される際などにおいて、軸保持スリーブ１１がガイド棒５１の先端側に向けて過度に移動された場合に軸保持スリーブ１１に当接し、軸保持スリーブ１１の脱落を防止する。   Further, in the illustrated example, a large-diameter stopper portion 52 is provided at the distal end portion of each guide rod 51, and these stopper portions 52 are used when the shaft holding sleeve 11 is removed from the fitting hole 20. When the shaft holding sleeve 11 is excessively moved toward the distal end side of the guide rod 51, the shaft holding sleeve 11 comes into contact with the shaft holding sleeve 11 to prevent the shaft holding sleeve 11 from falling off.

軸保持スリーブ１１が嵌合孔２０に挿入された後には、ガイド棒５１はスピンドル１４から取り外され、ガイド棒５１に替えてフランジパイプ３５がスピンドル１４に締結され、軸保持スリーブ１１がスピンドル１４に固定される。   After the shaft holding sleeve 11 is inserted into the fitting hole 20, the guide rod 51 is removed from the spindle 14, the flange pipe 35 is fastened to the spindle 14 instead of the guide rod 51, and the shaft holding sleeve 11 is attached to the spindle 14. Fixed.

図１３及び図１４は、本発明の実施形態を説明するための、軸肥大加工機用治具の他の例の構成を示す。   FIG. 13 and FIG. 14 show the configuration of another example of a jig for a shaft enlargement processing machine for explaining the embodiment of the present invention.

図１３及び図１４に示す治具６０は、環状に形成されており、スピンドル１４の開口端部に外嵌してスピンドル１４に装着される。治具６０は、嵌合孔２０を露呈させる開口６１の鉛直下側の縁部から軸方向に突出して形成された半円筒状の支持部６２を有しており、軸保持スリーブ１１は支持部６２に載置される。支持部６２の内周面は、嵌合孔２０の内周面に面一に連なっており、軸保持スリーブ１１は、支持部６２上から嵌合孔２０に、また、嵌合孔２０から支持部６２上に、円滑に移動される。本例の治具６０によれば、スピンドル１４に対する着脱が容易であり、軸保持スリーブ１１の交換の作業性を一層向上させることができる。   The jig 60 shown in FIGS. 13 and 14 is formed in an annular shape, and is fitted on the spindle 14 by being externally fitted to the open end of the spindle 14. The jig 60 has a semi-cylindrical support portion 62 formed to protrude in the axial direction from an edge of the opening 61 that exposes the fitting hole 20, and the shaft holding sleeve 11 is a support portion. 62. The inner peripheral surface of the support portion 62 is flush with the inner peripheral surface of the fitting hole 20, and the shaft holding sleeve 11 is supported from the support portion 62 to the fitting hole 20 and from the fitting hole 20. It is moved smoothly on the part 62. According to the jig 60 of this example, the spindle 14 can be easily attached and detached, and the workability of exchanging the shaft holding sleeve 11 can be further improved.

以上、図１に示した軸肥大加工方法を実施する軸肥大加工機１０を例に、本発明の軸保持スリーブ及び軸肥大加工機並びに軸肥大加工機用治具について説明したが、図２から図５にそれぞれ示した軸肥大加工方法を実施する軸肥大加工機は、軸材の中間部に交番負荷を加えるためのホルダユニットやスピンドルの動作方式が異なるだけであり、これらの軸肥大加工機においても、上述した軸保持スリーブ及び軸肥大加工機用治具の構成を適用可能である。   The shaft enlargement processing machine 10 for carrying out the shaft enlargement processing method shown in FIG. 1 has been described above, and the shaft holding sleeve, the shaft enlargement processing machine, and the jig for the shaft enlargement processing machine according to the present invention have been described. The shaft enlargement processing machine that performs the shaft enlargement processing method shown in FIG. 5 differs only in the operation method of the holder unit and spindle for applying an alternating load to the intermediate portion of the shaft material. In this case, the configurations of the shaft holding sleeve and the shaft enlargement processing jig described above can be applied.

次に、上述した軸保持スリーブ１１の種々の作製例、及びそれらの寿命評価について説明する。   Next, various production examples of the shaft holding sleeve 11 described above and life evaluation thereof will be described.

作製例１の軸保持スリーブは、セミハイス鋼を母材とし、表面硬化処理は省略したものである。作製例２の軸保持スリーブは、セミハイス鋼を母材とし、表面硬化処理として窒化処理を施したものである。作製例３の軸保持スリーブは、ＳＫＨ５１（ハイス鋼）を母材とし、表面硬化処理として塩浴浸漬法の一種であるＴＤプロセス（登録商標）によりＶＣ（炭化バナジウム）皮膜を形成したものである。これら作製例１〜３の軸保持スリーブの母材硬さ及び表面性状を表１に示す。   The shaft holding sleeve of Production Example 1 uses semi-high-speed steel as a base material and omits the surface hardening treatment. The shaft holding sleeve of Production Example 2 uses semi-high-speed steel as a base material and is subjected to nitriding treatment as a surface hardening treatment. The shaft holding sleeve of Production Example 3 uses SKH51 (high-speed steel) as a base material, and has a VC (vanadium carbide) film formed by a TD process (registered trademark) which is a kind of salt bath immersion method as a surface hardening treatment. . Table 1 shows the base material hardness and surface properties of the shaft holding sleeves of Production Examples 1 to 3.

Figure 2015178121
Figure 2015178121

上記作製例１〜３の軸保持スリーブの各々について、上述した軸肥大加工機１０にて同一条件で軸肥大加工を繰り返し行い、視認可能なかじり（凝着磨耗）が発生するまでの加工本数で寿命を評価した。評価結果を表１に合わせて示す。表１に示される評価結果から、表面硬化処理を施すことにより、軸材との接触による軸保持スリーブの損耗を抑制できることがわかる。そして、軸保持スリーブの損耗を抑制することにより、軸保持スリーブの交換頻度を低くすることができ、軸肥大加工における作業性を高めることができる。   With respect to each of the shaft holding sleeves of Production Examples 1 to 3, the shaft enlargement processing is repeatedly performed under the same conditions on the shaft enlargement processing machine 10 described above, and the number of processing until the visible galling (adhesion wear) occurs. Lifespan was evaluated. The evaluation results are shown in Table 1. From the evaluation results shown in Table 1, it is understood that the wear of the shaft holding sleeve due to the contact with the shaft material can be suppressed by performing the surface hardening treatment. Further, by suppressing the wear of the shaft holding sleeve, the replacement frequency of the shaft holding sleeve can be lowered, and the workability in the shaft enlargement process can be improved.

以上、説明したとおり、本明細書には下記の事項が開示されている。   As described above, the following items are disclosed in this specification.

（１） 軸材の一部を肥大させる軸肥大加工において、軸材に軸圧縮応力を負荷する加圧装置の嵌合孔に挿入されて軸材の端部を保持する軸保持スリーブであって、前記嵌合孔への挿入方向先側の先端面から前記嵌合孔の外に露出する露出部の表面に達する少なくとも一つの空気流通路を有する軸保持スリーブ。
（２） 上記（１）の軸保持スリーブであって、前記空気流通路は、外周面に形成された溝である軸保持スリーブ。
（３） 上記（１）の軸保持スリーブであって、前記空気流通路は、前記先端面から反対側の端面に達する貫通孔である軸保持スリーブ。
（４） 上記（１）から（３）のいずれか一つの軸保持スリーブであって、吊金具が着脱可能な装着部が外周面に設けられている軸保持スリーブ。
（５） 上記（１）から（４）のいずれか一つの軸保持スリーブであって、把持部が前記露出部に設けられている軸保持スリーブ。
（６） 上記（１）から（５）のいずれか一つの軸保持スリーブであって、少なくとも軸材の端部が挿入される開口部の表面に表面硬化処理が施されている軸保持スリーブ。
（７） 上記（６）の軸保持スリーブであって、表面硬化処理された表面のビッカース硬さがＨＶ１２００以上である軸保持スリーブ。
（８） 軸材の両端部をそれぞれ保持する一対の軸保持スリーブと、一対の前記軸保持スリーブがそれぞれ挿入される嵌合孔を有し、一対の前記軸保持スリーブに両端部を保持された軸材を軸方向に圧縮する加圧装置と、一対の前記軸保持スリーブに両端部を保持された軸材の中間部に、該軸材の軸方向と交差する方向に交番負荷を加える負荷発生装置と、を備え、一対の前記軸保持スリーブが上記（１）から（７）のいずれか一つの軸保持スリーブである軸肥大加工機。
（９） 上記（８）の軸肥大加工機において前記軸保持スリーブを前記嵌合孔に挿入する際に用いられる軸肥大加工機用治具であって、前記嵌合孔の開口縁部に装着され、前記軸保持スリーブが載置可能で且つ前記嵌合孔の内周面に面一に連なる載置面を有する軸肥大加工機用治具。 (1) A shaft holding sleeve that is inserted into a fitting hole of a pressurizing device that applies a shaft compressive stress to a shaft member and holds an end portion of the shaft member in shaft enlargement processing for enlarging a part of the shaft member. A shaft holding sleeve having at least one air flow passage that reaches the surface of the exposed portion exposed to the outside of the fitting hole from the front end surface in the insertion direction to the fitting hole.
(2) The shaft holding sleeve according to (1), wherein the air flow passage is a groove formed on an outer peripheral surface.
(3) The shaft holding sleeve according to (1), wherein the air flow passage is a through hole that reaches an end surface on the opposite side from the tip surface.
(4) The shaft holding sleeve according to any one of (1) to (3), wherein a mounting portion to which the hanging bracket can be attached and detached is provided on the outer peripheral surface.
(5) The shaft holding sleeve according to any one of (1) to (4) above, wherein a gripping portion is provided in the exposed portion.
(6) The shaft holding sleeve according to any one of the above (1) to (5), wherein at least the surface of the opening into which the end portion of the shaft member is inserted is subjected to surface hardening treatment.
(7) The shaft holding sleeve according to (6), wherein the surface-hardened surface has a Vickers hardness of HV1200 or more.
(8) A pair of shaft holding sleeves that respectively hold both ends of the shaft member and a fitting hole into which the pair of shaft holding sleeves are inserted, and both ends are held by the pair of shaft holding sleeves A pressure generator that compresses the shaft material in the axial direction and a load that applies an alternating load in a direction intersecting the axial direction of the shaft material at the intermediate portion of the shaft material that is held at both ends by the pair of shaft holding sleeves. A shaft enlargement processing machine, wherein the pair of shaft holding sleeves is any one of the shaft holding sleeves of (1) to (7).
(9) A shaft enlargement processing jig used when the shaft holding sleeve is inserted into the fitting hole in the shaft enlargement processing machine of (8) above, and is attached to the opening edge of the fitting hole. A jig for a shaft enlargement processing machine, on which the shaft holding sleeve can be placed, and has a placement surface continuous with the inner peripheral surface of the fitting hole.

１ａ 軸保持スリーブ
１０ 軸肥大加工機
１１ 軸保持スリーブ
１２ａ ホルダユニット
１２ｂ ホルダユニット
１３ 基台
１４ スピンドル
１５ ハウジング
１６ シリンダ
１７ 並進駆動部
１８ 傾動部
１９ 回転駆動部
２０ 嵌合孔
３０ 筒部
３１ 当金
３２ 収容部
３３ 露出部
３６ 溝（空気流通路）
３７ 貫通孔（空気流通路）
３８ 吊金具
３９ 装着部
４０ フランジ部
４１ ハンドル（把持部）
５０ 治具
６０ 治具
Ａ 基準線
Ｗ 軸材 DESCRIPTION OF SYMBOLS 1a Shaft holding sleeve 10 Shaft enlargement processing machine 11 Shaft holding sleeve 12a Holder unit 12b Holder unit 13 Base 14 Spindle 15 Housing 16 Cylinder 17 Translation drive part 18 Tilt part 19 Rotation drive part 20 Fitting hole 30 Tube part 31 Gold 31 Housing part 33 Exposed part 36 Groove (air flow passage)
37 Through hole (air flow passage)
38 Hanging bracket 39 Mounting portion 40 Flange portion 41 Handle (gripping portion)
50 Jig 60 Jig A Reference line W Shaft material

Claims (9)

軸材の一部を肥大させる軸肥大加工において、軸材に軸圧縮応力を負荷する加圧装置の嵌合孔に挿入されて軸材の端部を保持する軸保持スリーブであって、
前記嵌合孔への挿入方向先側の先端面から前記嵌合孔の外に露出する露出部の表面に達する少なくとも一つの空気流通路を有する軸保持スリーブ。 In shaft enlargement processing for enlarging a part of the shaft material, a shaft holding sleeve that is inserted into a fitting hole of a pressurizing device that applies axial compression stress to the shaft material and holds an end portion of the shaft material,
A shaft holding sleeve having at least one air flow passage that reaches the surface of the exposed portion exposed to the outside of the fitting hole from the front end surface in the insertion direction to the fitting hole. 請求項１記載の軸保持スリーブであって、
前記空気流通路は、外周面に形成された溝である軸保持スリーブ。 The shaft holding sleeve according to claim 1,
The air flow passage is a shaft holding sleeve which is a groove formed on an outer peripheral surface. 請求項１記載の軸保持スリーブであって、
前記空気流通路は、前記先端面から反対側の端面に達する貫通孔である軸保持スリーブ。 The shaft holding sleeve according to claim 1,
The airflow passage is a shaft holding sleeve that is a through hole that reaches an end surface on the opposite side from the tip surface. 請求項１から３のいずれか一項記載の軸保持スリーブであって、
吊金具が着脱可能な装着部が外周面に設けられている軸保持スリーブ。 The shaft holding sleeve according to any one of claims 1 to 3,
A shaft holding sleeve in which a mounting portion to which a hanging bracket can be attached and detached is provided on the outer peripheral surface. 請求項１から４のいずれか一項記載の軸保持スリーブであって、
把持部が前記露出部に設けられている軸保持スリーブ。 The shaft holding sleeve according to any one of claims 1 to 4,
A shaft holding sleeve having a gripping portion provided on the exposed portion. 請求項１から５のいずれか一項記載の軸保持スリーブであって、
少なくとも軸材の端部が挿入される開口部の表面に表面硬化処理が施されている軸保持スリーブ。 The shaft holding sleeve according to any one of claims 1 to 5,
A shaft holding sleeve in which at least the surface of the opening into which the end of the shaft member is inserted is subjected to surface hardening treatment. 請求項６記載の軸保持スリーブであって、
表面硬化処理された表面のビッカース硬さがＨＶ１２００以上である軸保持スリーブ。 The shaft holding sleeve according to claim 6, wherein
A shaft holding sleeve having a surface-hardened surface having a Vickers hardness of HV1200 or more. 軸材の両端部をそれぞれ保持する一対の軸保持スリーブと、
一対の前記軸保持スリーブがそれぞれ挿入される嵌合孔を有し、一対の前記軸保持スリーブに両端部を保持された軸材を軸方向に圧縮する加圧装置と、
一対の前記軸保持スリーブに両端部を保持された軸材の中間部に、該軸材の軸方向と交差する方向に交番負荷を加える負荷発生装置と、
を備え、
一対の前記軸保持スリーブが請求項１から７のいずれか一項記載の軸保持スリーブである軸肥大加工機。 A pair of shaft holding sleeves that respectively hold both ends of the shaft material;
A pressurizing device having a fitting hole into which the pair of shaft holding sleeves are respectively inserted, and compressing the shaft member held at both ends by the pair of shaft holding sleeves in the axial direction;
A load generator for applying an alternating load in a direction intersecting the axial direction of the shaft member to an intermediate portion of the shaft member held at both ends by the pair of shaft holding sleeves;
With
The shaft enlargement processing machine according to claim 1, wherein the pair of shaft holding sleeves are shaft holding sleeves according to claim 1. 請求項８記載の軸肥大加工機において前記軸保持スリーブを前記嵌合孔に挿入する際に用いられる軸肥大加工機用治具であって、
前記嵌合孔の開口縁部に装着され、前記軸保持スリーブが載置可能で且つ前記嵌合孔の内周面に面一に連なる載置面を有する軸肥大加工機用治具。 The shaft enlargement processing machine according to claim 8, wherein the shaft holding sleeve is used when the shaft holding sleeve is inserted into the fitting hole.
A jig for a shaft enlargement processing machine, which is mounted on the opening edge of the fitting hole, on which the shaft holding sleeve can be placed, and has a placing surface that is flush with the inner peripheral surface of the fitting hole.
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JP2014056519A JP6427326B2 (en) 2014-03-19 2014-03-19 Shaft holding sleeve, shaft enlargement processing machine, and jig for shaft enlargement processing machine
EP15714685.3A EP3119542B1 (en) 2014-03-19 2015-03-17 Shaft holding sleeve, shaft diameter enlarging apparatus and jig for shaft diameter enlarging apparatus
CN201580014839.3A CN106102954A (en) 2014-03-19 2015-03-17 Axle keeps sleeve, diameter of axle expansion instrument and the fixture for diameter of axle expansion instrument
US15/117,293 US20160346828A1 (en) 2014-03-19 2015-03-17 Shaft holding sleeve, shaft diameter enlarging apparatus and jig for shaft diameter enlarging apparatus
PCT/JP2015/058650 WO2015141865A1 (en) 2014-03-19 2015-03-17 Shaft holding sleeve, shaft diameter enlarging apparatus and jig for shaft diameter enlarging apparatus

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