JP2007064266A - Hollow shaft - Google Patents

Hollow shaft Download PDF

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JP2007064266A
JP2007064266A JP2005248213A JP2005248213A JP2007064266A JP 2007064266 A JP2007064266 A JP 2007064266A JP 2005248213 A JP2005248213 A JP 2005248213A JP 2005248213 A JP2005248213 A JP 2005248213A JP 2007064266 A JP2007064266 A JP 2007064266A
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hollow shaft
hollow
constant velocity
velocity universal
universal joint
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Yuichi Asano
祐一 浅野
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a hollow shaft capable of stably preventing lubricant (grease) from intruding in a hollow part, simplifying assembling operation to a constant velocity universal joint and the like and reducing cost. <P>SOLUTION: A spline 10 is formed in an outer circumference surface of an end part in the hollow shaft. The end part is plastically treated by swaging or upsetting and its opening part is closed. Both cold plastic process and hot plastic process can be used. As it is unnecessary to close the opening part by using a plug member such as a sealing plug, it is possible to simplify the assembling operation. As the opening part is closed by a plastic treatment, the hollow shaft has excellent workability and can be closed stably and securely and reliability of a function for preventing foreign matter such as the lubricant (grease) from entering. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、等速自在継手等に連結される中空シャフトに関し、例えば、自動車の動力伝達系を構成するドライブシャフト（駆動軸）やプロペラシャフト（推進軸）に適用することができる。   The present invention relates to a hollow shaft connected to a constant velocity universal joint or the like, and can be applied to, for example, a drive shaft (drive shaft) and a propeller shaft (propulsion shaft) that constitute a power transmission system of an automobile.

例えば、自動車の動力伝達系において、減速装置（ディファレンシャル）から駆動輪に動力を伝達する動力伝達シャフトは、ドライブシャフト（駆動軸）と呼ばれることがある。特に、ＦＦ車に使用されるドライブシャフトでは、前輪操舵時に大きな作動角と等速性が要求され、また、懸架装置との関係で軸方向の変位を吸収する機能が要求されるので、その一端部をダブルオフセット型等速自在継手やトリポード型等速自在継手等の摺動型等速自在継手を介して減速装置側に連結し、その他端部をバーフィールド型等速自在継手（ゼッパジョイントと呼ばれることもある。）等の固定側等速自在継手を介して駆動輪側に連結する機構が多く採用されている。   For example, in a power transmission system of an automobile, a power transmission shaft that transmits power from a speed reducer (differential) to drive wheels may be called a drive shaft (drive shaft). In particular, a drive shaft used in an FF vehicle requires a large operating angle and constant velocity during front wheel steering, and also requires a function of absorbing axial displacement in relation to the suspension system. Is connected to the reducer side through a sliding type constant velocity universal joint such as a double offset type constant velocity universal joint or a tripod type constant velocity universal joint, and the other end is connected to a barfield type constant velocity universal joint (Zepper joint). In many cases, a mechanism that is connected to the drive wheel side via a fixed-side constant velocity universal joint is employed.

上記のようなドライブシャフトとしては、従来、また現在においても、中実シャフトが多く使用されているが、自動車の軽量化、ドライブシャフトの剛性増大による機能向上、曲げ一次固有振動数のチューニング最適化による車室内の静粛性向上等の観点から、近時では、ドライブシャフトを中空シャフト化する要求が増えてきている。   As a drive shaft as described above, a solid shaft is often used in the past and now, but the weight of the car is improved, the function is improved by increasing the rigidity of the drive shaft, and the tuning of the bending primary natural frequency is optimized. Recently, there has been an increasing demand for a drive shaft to be a hollow shaft from the viewpoint of improving the quietness of the interior of the vehicle.

この種の中空状動力伝達シャフト（中空シャフト）は、等速自在継手の内部に封入された潤滑剤（グリース）が中空部に侵入するのを防止するために、中空部の端部内周に封止プラグを装着している。この封止プラグは金属製のものを使用する場合もあるが、中空部に対する圧入代や圧入位置を管理するために、端部内周を削り加工によって仕上げる必要があり、加工コストが高くなるという問題がある。そのため、クロロプレンゴム（ＣＲ）やニトリルゴム（ＮＢＲ）等のゴムで形成した封止プラグ（特許文献１）や、エラストマーで形成した封止プラグ（特許文献２）が提案されている。
特開平６−２８１０１０号公報 特開平９−６８２３３号公報 This type of hollow power transmission shaft (hollow shaft) is sealed on the inner periphery of the end of the hollow portion in order to prevent the lubricant (grease) enclosed in the constant velocity universal joint from entering the hollow portion. A stop plug is attached. This sealing plug may be made of metal, but in order to manage the press-fitting allowance and the press-fitting position with respect to the hollow part, it is necessary to finish the inner periphery of the end part by machining, which raises the processing cost. There is. Therefore, a sealing plug (Patent Document 1) formed of rubber such as chloroprene rubber (CR) or nitrile rubber (NBR) and a sealing plug (Patent Document 2) formed of elastomer have been proposed.
JP-A-6-281010 Japanese Patent Laid-Open No. 9-68233

特許文献１、２のゴム製封止プラグは、比較的大きな力で中空部に圧入する必要があるので、組付け作業に手間が掛かるという問題がある。また、封止プラグは、所要の形状および寸法に成形された部品形態のものであるため、製作費が高くなるという問題もある。なお、発泡樹脂等を充填させて開口部を塞ぐようにすることも可能であるが、この方法では、充填作業を必要として、前記封止プラグを使用する場合よりもコスト安となるものの組付け作業に手間が掛かるという欠点がある。   Since the rubber sealing plugs of Patent Documents 1 and 2 need to be press-fitted into the hollow portion with a relatively large force, there is a problem that the assembling work is troublesome. Further, since the sealing plug is in the form of a part molded in a required shape and size, there is a problem that the manufacturing cost is increased. Although it is possible to fill the opening by filling with foamed resin or the like, this method requires a filling operation and is assembled at a lower cost than when the sealing plug is used. There is a drawback that work is troublesome.

本発明の課題は、潤滑剤（グリース）が中空部に侵入するのを安定して防止でき、しかも、中空部を塞ぐ部材をなくし、コスト低減も図ることができる中空シャフトを提供することである。   An object of the present invention is to provide a hollow shaft that can stably prevent a lubricant (grease) from entering a hollow portion, eliminate a member that closes the hollow portion, and reduce costs. .

上記課題を解決するため、本発明は、端部の外周面にスプラインが形成された中空シャフトにおいて、前記端部が塑性加工されてその開口部が塞がれているものである。   In order to solve the above-mentioned problems, the present invention is a hollow shaft in which splines are formed on the outer peripheral surface of the end portion, and the end portion is plastically processed to close the opening.

前記端部が塑性加工されてその開口部が塞がれているので、潤滑剤（グリース）等の異物が中空部に侵入するのを防止できる。また、封止プラグ等の栓部材を使用して開口部を塞ぐ必要がない。   Since the end portion is plastically processed and the opening thereof is blocked, foreign matters such as a lubricant (grease) can be prevented from entering the hollow portion. Further, it is not necessary to close the opening using a plug member such as a sealing plug.

前記塑性加工がスウェージング加工であったり、アプセット加工であったりする。塑性加工を冷間で実施しても、熱間で実施してもよい。   The plastic working may be a swaging process or an upset process. The plastic working may be performed cold or hot.

前記のように成形された中空シャフトとして、中空ステム、特に中空ロングステムに適用するのが好ましい。   The hollow shaft formed as described above is preferably applied to a hollow stem, particularly a hollow long stem.

本発明によれば、潤滑剤（グリース）等の異物が中空部に侵入するのを防止できる。封止プラグ等の栓部材を使用して開口部を塞ぐ必要がないので、組付け作業の簡略化が可能であり、しかも、栓部材を必要としない分、部品点数が減少して、コスト低減化および部品管理の簡略化を図ることができる。さらに、塑性加工にて開口部を塞ぐので、その加工性に優れ、安定して確実に塞ぐことができ、潤滑剤（グリース）等の異物侵入防止機能の信頼性が向上する。また、軸端部が中実状となるので、端部において強度が向上する。   According to the present invention, foreign matter such as a lubricant (grease) can be prevented from entering the hollow portion. Since it is not necessary to close the opening using a plug member such as a sealing plug, the assembly work can be simplified, and the number of parts is reduced and the cost is reduced because the plug member is not required. And simplification of parts management. Further, since the opening is closed by plastic working, the workability is excellent, the work can be stably and reliably closed, and the reliability of the function of preventing entry of foreign matter such as a lubricant (grease) is improved. Further, since the shaft end portion is solid, the strength is improved at the end portion.

本発明に係る中空シャフトの実施形態を以下に詳述する。図１は、中空状の動力伝達シャフト（中空シャフト）１と、中空シャフト１の一端部に連結された摺動型等速自在継手２と、中空シャフト１の他端部に連結された固定型等速自在継手３とを備えた自動車の動力伝達機構を示している。   Embodiments of the hollow shaft according to the present invention will be described in detail below. FIG. 1 shows a hollow power transmission shaft (hollow shaft) 1, a sliding type constant velocity universal joint 2 connected to one end of the hollow shaft 1, and a fixed type connected to the other end of the hollow shaft 1. The power transmission mechanism of the motor vehicle provided with the constant velocity universal joint 3 is shown.

この実施形態の動力伝達機構において、摺動型等速自在継手２は減速装置（ディファレンシャル）に連結され、固定型等速自在継手３は駆動輪側に連結される。中空シャフト１の一端部は摺動型等速自在継手２のトリポード部材２ａにスプライン連結され、摺動型等速自在継手２の外輪２ｂの端部外周と動力伝達シャフト１の外周にブーツ２ｃがそれぞれ固定されている。 In the power transmission mechanism of this embodiment, the sliding type constant velocity universal joint 2 is connected to a reduction gear (differential), and the fixed type constant velocity universal joint 3 is connected to the drive wheel side. One end of the hollow shaft 1 is splined to a tripod member 2 a of the sliding type constant velocity universal joint 2, and a boot 2 c is provided on the outer periphery of the outer ring 2 b of the sliding type constant velocity universal joint 2 and the outer periphery of the power transmission shaft 1. Each is fixed.

また、中空シャフト１の他端部は固定型等速自在継手３の内輪３ａにスプライン連結され、固定型等速自在継手３の外輪３ｂの端部外周と動力伝達シャフト１の外周にブーツ３ｃがそれぞれ固定されている。なお、図１においては、摺動型等速自在継手２としてトリポード型等速自在継手が例示され、固定型等速自在継手３としてバーフィールド型等速自在継手が例示されているが、他の型式の等速自在継手が用いられる場合もある。   The other end of the hollow shaft 1 is splined to the inner ring 3 a of the fixed type constant velocity universal joint 3, and a boot 3 c is provided on the outer periphery of the outer ring 3 b of the fixed type constant velocity universal joint 3 and the outer periphery of the power transmission shaft 1. Each is fixed. In FIG. 1, a tripod type constant velocity universal joint is illustrated as the sliding type constant velocity universal joint 2, and a barfield type constant velocity universal joint is illustrated as the fixed type constant velocity universal joint 3. Some types of constant velocity universal joints may be used.

図２は、中空シャフト（ドライブシャフト）１を示している。この中空シャフト１は、軸方向中間部の大径部５と、両端部側の小径部６、７と、一端側の小径部６と大径部５との間に設けられる中径部８と、他端側の小径部７と大径部５との間に設けられる中径部９等を有する。   FIG. 2 shows a hollow shaft (drive shaft) 1. The hollow shaft 1 includes a large-diameter portion 5 at an intermediate portion in the axial direction, small-diameter portions 6 and 7 on both end sides, and a medium-diameter portion 8 provided between the small-diameter portion 6 and the large-diameter portion 5 on one end side. The intermediate diameter portion 9 is provided between the small diameter portion 7 and the large diameter portion 5 on the other end side.

各小径部６、７の外周側にはスプライン１０、１０が形成されている。また、中径部８、９には、ブーツ２ｃ、３ｃの小径端部の内周を嵌合するための嵌合溝１１、１１を有するブーツ固定部１２、１２が形成されている。さらに、小径部６、７には、等速自在継手２、３に対する軸方向抜け止め用の止め輪を装着するための止め輪溝１３、１３が形成されている。   Splines 10 and 10 are formed on the outer peripheral sides of the small diameter portions 6 and 7. In addition, the middle diameter portions 8 and 9 are formed with boot fixing portions 12 and 12 having fitting grooves 11 and 11 for fitting the inner circumferences of the small diameter ends of the boots 2c and 3c. Further, the small diameter portions 6 and 7 are formed with retaining ring grooves 13 and 13 for mounting retaining rings for retaining the axial direction with respect to the constant velocity universal joints 2 and 3.

中空シャフト１は、軸方向略全体に中空部１４が形成されているが、その端部（具体的には、スプライン１０が形成されたスプライン形成部１５）が塑性加工されてその開口部が塞がれている。塑性加工法としてスウェージング加工やアプセット加工等を用いることができる。スウェージング加工とは、パイプ（中空体）の端部を絞って外径を減少させる加工法であり、アプセット加工とは、パイプの端を加熱したのち、ダイスとマンドレルの間で据え込み加工する方法である。   The hollow shaft 1 has a hollow portion 14 formed substantially in the entire axial direction, but its end portion (specifically, the spline forming portion 15 on which the spline 10 is formed) is plastically processed to close the opening portion. It is peeling off. As the plastic working method, a swaging process or an upset process can be used. Swaging is a processing method that reduces the outer diameter by narrowing the end of a pipe (hollow body). Upset processing is a process of upsetting between the die and mandrel after heating the end of the pipe. Is the method.

この中空シャフト１を製造する場合、例えば、まず、パイプ素材を形成し、このパイプ素材にマンドレルを挿入し、この状態で塑性加工を施すことによって、前記大径部５、中径部８、９および小径部６、７等を形成することになる。   When manufacturing the hollow shaft 1, for example, first, a pipe material is formed, a mandrel is inserted into the pipe material, and plastic processing is performed in this state, whereby the large diameter portion 5 and the medium diameter portions 8, 9 are formed. In addition, the small diameter portions 6 and 7 are formed.

このため、マンドレルを前記スプライン形成部１５に対応させない状態として、塑性加工して、このスプライン形成部１５を縮径させる。これによって、図２に示すように、スプライン形成部１５の孔部を押し潰すことになり、その開口部が塞がれる。   Therefore, the spline forming portion 15 is reduced in diameter by plastic working so that the mandrel does not correspond to the spline forming portion 15. As a result, as shown in FIG. 2, the hole of the spline forming portion 15 is crushed and the opening is closed.

この場合、大径部５はその肉厚Ｔ１が小とされ、この大径部５からテーパ部１６を介して延びる中径部８、９はその肉厚Ｔ２が端部側の小径部６、７に向かって順次大きくなっている。そして、中径部８、９からテーパ部１７を介して延びる小径部６、７はその肉厚Ｔ３が大とされている。   In this case, the large-diameter portion 5 has a small thickness T1, and the medium-diameter portions 8 and 9 extending from the large-diameter portion 5 through the taper portion 16 have a small-diameter portion 6 whose thickness T2 is on the end side. It gradually increases toward 7. The small diameter portions 6 and 7 extending from the medium diameter portions 8 and 9 via the taper portion 17 have a large thickness T3.

すなわち、中空部１４は、その大径部５において大径とされ、その中径部８、９において小径部６、７に向かって順次縮径し、スプライン形成部１５においてその内周面が密接している。   That is, the hollow portion 14 has a large diameter at the large diameter portion 5, and gradually decreases in diameter toward the small diameter portions 6, 7 at the medium diameter portions 8, 9, and the inner peripheral surface is closely contacted at the spline forming portion 15. is doing.

なお、スプライン形成部１５に、転造加工によるスプライン加工を行って、スプライン１０、１０を形成する。転造加工は、一対のダイスを使用し、このダイス間にパイプ素材を介在させ、ダイスを回転させつつパイプ素材の加工部位をパイプ素材の軸方向に沿って移動させるものである。各スプライン１０は、周方向に沿って所定ピッチで配設される複数の軸方向凸条と、軸方向凸条間に配設される複数の軸方向凹条とからなる。   The spline forming unit 15 is splined by rolling to form the splines 10 and 10. In the rolling process, a pair of dies are used, a pipe material is interposed between the dies, and the processing part of the pipe material is moved along the axial direction of the pipe material while rotating the die. Each spline 10 includes a plurality of axial ridges arranged at a predetermined pitch along the circumferential direction and a plurality of axial ridges arranged between the axial ridges.

この中空シャフト１では、端部が塑性加工されてその開口部が塞がれているので、潤滑剤（グリース）等の異物が中空部１４に侵入するのを防止できる。封止プラグ等の栓部材を使用して開口部を塞ぐ必要がないので、組付け作業の簡略化が可能であり、しかも、栓部材を必要としない分、部品点数が減少して、コスト低減化および部品管理の簡略化を図ることができる。さらに、塑性加工にて開口部を塞ぐので、その加工性に優れ、安定して確実に塞ぐことができ、潤滑剤（グリース）等の異物侵入防止機能の信頼性が向上する。また、軸端部が中実状となるので、端部において強度が向上する。   In this hollow shaft 1, since the end portion is plastic processed and the opening is closed, it is possible to prevent foreign matters such as a lubricant (grease) from entering the hollow portion 14. Since it is not necessary to close the opening using a plug member such as a sealing plug, the assembly work can be simplified, and the number of parts is reduced and the cost is reduced because the plug member is not required. And simplification of parts management. Further, since the opening is closed by plastic working, the workability is excellent, the work can be stably and reliably closed, and the reliability of the function of preventing entry of foreign matter such as a lubricant (grease) is improved. Further, since the shaft end portion is solid, the strength is improved at the end portion.

次に、図３は等速自在継手の外側継手部材２０を示している。一般に、等速自在継手は、内周面にトラック溝が形成された前記外側継手部材２０と、その外側継手部材２０のトラック溝と対向するトラック溝が外周面に形成された内側継手部材と、外側継手部材２０のトラック溝と内側継手部材のトラック溝との間に組み込まれたボールと、外側継手部材２０と内側継手部材間に介在してボールを支持する保持器とからなる。   Next, FIG. 3 shows the outer joint member 20 of the constant velocity universal joint. Generally, a constant velocity universal joint includes the outer joint member 20 having a track groove formed on an inner peripheral surface thereof, an inner joint member having a track groove opposed to the track groove of the outer joint member 20 formed on an outer peripheral surface thereof, and The ball includes a ball incorporated between the track groove of the outer joint member 20 and the track groove of the inner joint member, and a cage that supports the ball interposed between the outer joint member 20 and the inner joint member.

そして、外側継手部材２０は、内側継手部材、ボールおよび保持器を収容した椀状のマウス部２１と、そのマウス部２１から軸方向に一体的に延びるステム（中空ロングステム）２２を有する。   The outer joint member 20 includes a bowl-shaped mouth portion 21 that houses the inner joint member, the ball, and the cage, and a stem (hollow long stem) 22 that extends integrally from the mouth portion 21 in the axial direction.

ステム２２は、マウス部２１側の大径部２３と、反マウス部側の端部のスプライン形成部２４と、スプライン形成部２４と大径部２３との間に設けられる中径部２５等を有する。スプライン形成部２４は、中径部２５から反マウス部側へ延びる小径部２６の端部（反マウス部側端部）に形成されている。   The stem 22 includes a large diameter portion 23 on the mouse portion 21 side, a spline forming portion 24 at the end on the anti-mouse portion side, a medium diameter portion 25 provided between the spline forming portion 24 and the large diameter portion 23, and the like. Have. The spline forming portion 24 is formed at an end portion (an anti-mouse portion side end portion) of the small-diameter portion 26 extending from the medium diameter portion 25 to the anti-mouse portion side.

この図３に示すステム２２も、前記図１と図２に示す中空シャフト１と同様の成形方法によって形成される。まず、パイプ素材（中空ステムとなる素材）を形成する。そして、このパイプ素材にマンドレルを挿入し、この状態で塑性加工を施すことによって、前記大径部２３、中径部２５および小径部２６等を形成することになる。   The stem 22 shown in FIG. 3 is also formed by the same molding method as the hollow shaft 1 shown in FIGS. First, a pipe material (a material that becomes a hollow stem) is formed. Then, by inserting a mandrel into the pipe material and performing plastic working in this state, the large diameter portion 23, the medium diameter portion 25, the small diameter portion 26, and the like are formed.

このため、マンドレルを前記スプライン形成部２４に対応させない状態として、塑性加工して、このスプライン形成部２４を縮径させる。これによって、スプライン形成部２４の孔部を押し潰すことになり、その開口部が塞がれる。   Therefore, the spline forming portion 24 is reduced in diameter by plastic working in a state where the mandrel does not correspond to the spline forming portion 24. As a result, the hole of the spline forming portion 24 is crushed and the opening is closed.

この場合、大径部２３はその肉厚Ｔ５が小とされ、この大径部２３からテーパ部２７を介して延びる中径部２５はその肉厚Ｔ６が小径部２６に向かって順次大きくなっている。そして、小径部２６からテーパ部２８を介して延びるスプライン形成部２４はその肉厚Ｔ７が大とされている。   In this case, the large-diameter portion 23 has a small thickness T5, and the medium-diameter portion 25 extending from the large-diameter portion 23 via the taper portion 27 has a thickness T6 gradually increasing toward the small-diameter portion 26. Yes. And the spline formation part 24 extended through the taper part 28 from the small diameter part 26 is made large thickness T7.

すなわち、中空部３０は、その大径部５において大径とされ、中径部２５において小径部２６に向かって順次縮径し、スプライン形成部２４においてその内周面が密接している。この場合も、スプライン形成部２４に、転造加工によるスプライン加工を行って、スプライン３１を形成する。なお、マウス部２１には連結用突出部３２が形成され、この連結用突出部３２に中空ステム２２が連結一体化される。   That is, the hollow portion 30 has a large diameter at the large diameter portion 5, is gradually reduced in diameter toward the small diameter portion 26 at the medium diameter portion 25, and an inner peripheral surface thereof is in close contact with the spline forming portion 24. Also in this case, the spline 31 is formed by performing spline processing by rolling on the spline forming portion 24. Note that a connecting protrusion 32 is formed in the mouse portion 21, and the hollow stem 22 is connected and integrated with the connecting protrusion 32.

このため、この中空ステム２２も、前記中空シャフト１と同一の作用効果を奏することができる。したがって、この中空ステム２２を等速自在継手に使用することによって、等速自在継手は安定した機能を長期にわたって発揮することができる。   For this reason, this hollow stem 22 can also exhibit the same effect as the hollow shaft 1. Therefore, by using this hollow stem 22 for a constant velocity universal joint, the constant velocity universal joint can exhibit a stable function over a long period of time.

なお、塑性加工として、冷間で行っても、熱間で行ってもよい。また、図２に示す中空シャフト１では、軸方向両端部を塑性加工にて塞ぎ、図３に示す中空ステム（中空シャフト）２２では、軸方向一端部（片側端部）のみ塑性加工にて塞いでいるが、図２に示すような中空シャフトであっても、片側端部のみを塑性加工にて塞いで、他方の端部を他の方法、例えば、封止プラグ等の栓部材で塞ぐようにしてもよい。   The plastic working may be performed cold or hot. Further, in the hollow shaft 1 shown in FIG. 2, both ends in the axial direction are closed by plastic working, and in the hollow stem (hollow shaft) 22 shown in FIG. 3, only one axial end (one side end) is closed by plastic working. However, even in the case of a hollow shaft as shown in FIG. 2, only one end is closed by plastic working, and the other end is closed by another method, for example, a plug member such as a sealing plug. It may be.

図２等に示す中空シャフト１では、その肉厚（周壁の肉厚）を種々変化させているが、肉厚を軸方向全体にわたって略同一としてもよい。また、転造加工によって形成されるスプライン１０、３１として、その軸方向凸条および軸方向凹条の数等は任意に設定することができ、軸方向凸条および軸方向凹条の形状としても、装着される相手側に等に応じて種々変更することができる。   In the hollow shaft 1 shown in FIG. 2 and the like, the thickness (thickness of the peripheral wall) is variously changed, but the thickness may be substantially the same over the entire axial direction. Moreover, as the splines 10 and 31 formed by rolling, the number of the axial ridges and the number of the axial ridges can be arbitrarily set, and the shape of the axial ridges and the axial ridges is also possible. Various changes can be made depending on the other party to be mounted.

本発明に係る中空シャフトを使用した自動車の動力伝達機構を示す断面図である。It is sectional drawing which shows the power transmission mechanism of the motor vehicle using the hollow shaft which concerns on this invention. 前記中空シャフトの半裁断面図である。It is a half-cut sectional view of the hollow shaft. 中空ステムの一部断面で示す全体図である。It is a whole view shown with a partial cross section of a hollow stem.

符号の説明Explanation of symbols

１０、３１ スプライン
２２ 中空ステム 10, 31 Spline 22 Hollow stem

Claims (6)

端部の外周面にスプラインが形成された中空シャフトにおいて、前記端部が塑性加工されてその開口部が塞がれていることを特徴とする中空シャフト。   A hollow shaft in which splines are formed on an outer peripheral surface of an end portion, wherein the end portion is plastically processed to close an opening thereof. 前記塑性加工がスウェージング加工であることを特徴とする請求項１に記載の中空シャフト。   The hollow shaft according to claim 1, wherein the plastic working is a swaging process. 前記塑性加工がアプセット加工であることを特徴とする請求項１に記載の中空シャフト。   The hollow shaft according to claim 1, wherein the plastic processing is upset processing. 前記塑性加工を冷間で行うことを特徴とする請求項１に記載の中空シャフト。   The hollow shaft according to claim 1, wherein the plastic working is performed in a cold state. 前記塑性加工が熱間で行うことを特徴とする請求項１に記載の中空シャフト。   The hollow shaft according to claim 1, wherein the plastic working is performed hot. 等速自在継手の中空ステムに適用されることを特徴とする請求項１から請求項５にいずれか記載の中空シャフト。   6. The hollow shaft according to claim 1, wherein the hollow shaft is applied to a hollow stem of a constant velocity universal joint.
JP2005248213A 2005-08-29 2005-08-29 Hollow shaft Withdrawn JP2007064266A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104613084A (en) * 2015-01-28 2015-05-13 周正英 Energy-saving transmission main shaft
CN109108198A (en) * 2018-08-22 2019-01-01 重庆建设工业(集团)有限责任公司 A kind of rotation radial forging method of large diameter thin wall pipe
WO2023120665A1 (en) * 2021-12-24 2023-06-29 日本発條株式会社 Stabilizer manufacturing method, stabilizer, and tubular member for manufacturing stabilizer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104613084A (en) * 2015-01-28 2015-05-13 周正英 Energy-saving transmission main shaft
CN109108198A (en) * 2018-08-22 2019-01-01 重庆建设工业(集团)有限责任公司 A kind of rotation radial forging method of large diameter thin wall pipe
WO2023120665A1 (en) * 2021-12-24 2023-06-29 日本発條株式会社 Stabilizer manufacturing method, stabilizer, and tubular member for manufacturing stabilizer
JP2023094719A (en) * 2021-12-24 2023-07-06 日本発條株式会社 Stabilizer manufacturing method, stabilizer and cylindrical member for manufacture of stabilizer
JP7413340B2 (en) 2021-12-24 2024-01-15 日本発條株式会社 Stabilizer manufacturing method

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