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公开(公告)号：JP2003013964A
公开(公告)日：2003-01-15
申请号：JP2001195176
申请日：2001-06-27
Applicant: Ntn Corp , エヌティエヌ株式会社
Inventor： UEDA KEIICHI , SASABE MITSUO
CPC classification number: F16C33/3812 , F16C19/06 , F16C33/3856 , F16C2226/74 , F16C2240/40 , F16C2240/80 , F16C2300/14 , F16C2316/10
Abstract: PROBLEM TO BE SOLVED: To surely control a gap in a radial direction of a segment forming a retainer of a super thin-walled bearing and to improve work efficiency for combining respective segments. SOLUTION: A cylinder-shaped connecting surface 45A and spherical connecting surface 46A are formed at one of a connecting portion A of the segment 40. These connecting surfaces 45A and 46A are respectively connected with a cylinder-shaped connecting surface 45B and spherical connecting surface 46B formed in a connecting portion B of a counter-segment 40 in a radial direction at a concavo-convex connecting state, and pulling-out of respective segments 40 can be prevented in a radial direction accordingly.
Abstract translation: 要解决的问题：可靠地控制形成超薄壁轴承的保持器的段的径向间隙，并提高组合各段的工作效率。 解决方案：圆筒形连接表面45A和球形连接表面46A形成在段40的连接部分A中的一个处。这些连接表面45A和46A分别与圆柱形连接表面45B和球形连接表面46B连接 形成在反向段40的连接部分B的凹凸连接状态的径向方向上，并且相应地可以在径向方向上防止相应的段40的拉出。
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公开(公告)号：JP2003011036A
公开(公告)日：2003-01-15
申请号：JP2001198220
申请日：2001-06-29
Applicant: Ntn Corp , エヌティエヌ株式会社
Inventor： FUJIKAWA YOSHIO , OZAKI TAKAMI
Abstract: PROBLEM TO BE SOLVED: To provide an attachment main shaft device fitted to a machine tool, having high rotational accuracy of a tool and holding rigidity, and capable of improving machining accuracy and attaining high speed rotation especially in high speed cutting with a small-diameter tool.
SOLUTION: A main shaft 1 is supported in a housing 3 by bearings 7, 9, and a driving source 5 is contained in the housing 3. A support part of the main shaft 1 by the bearings 7, 9 and a chuck means 8 are formed by an integrated member. The chuck means 8 is formed by providing the tip of the main shaft 1 with a tool fitting hole 2 in which a shank part of a tool 4 is interference-fitted. The chuck means 8 enlarges the minimum inside diameter of the tool fitting hole 2 by thermal expansion to attach and detach the tool 4. The chuck means 8 may elastically deform the tool fitting hole 2 with external force to attach and detach the tool 4. The bearings 7, 9 are respectively hydrostatic gas bearings. In the hydrostatic gas thrust bearing 9, the rear end face 1a of the main shaft 1 is a baring surface.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：提供一种装配到机床上的安装主轴装置，具有高的刀具转动精度和保持刚性，并且能够提高加工精度并获得高速旋转，特别是在具有小直径的高速切削 工具。 解决方案：主轴1通过轴承7,9支撑在壳体3中，驱动源5容纳在壳体3中。主轴1的轴承7,9的支撑部分和卡盘装置8是 由综合成员组成。 卡盘装置8通过为主轴1的尖端设置有工具装配孔2而形成，工具4的柄部被干涉配合。 卡盘装置8通过热膨胀扩大工具装配孔2的最小内径，以附接和拆卸工具4.卡盘装置8可以用外力使工具装配孔2弹性变形以附接和拆卸工具4。 轴承7,9分别为静液压轴承。 在静水压推力轴承9中，主轴1的后端面1a为弯曲面。
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公开(公告)号：JP2003003746A
公开(公告)日：2003-01-08
申请号：JP2001192768
申请日：2001-06-26
Applicant: Matsushita Refrig Co Ltd , Ntn Corp , エヌティエヌ株式会社 , 松下冷機株式会社
Inventor： KOIKE TAKASHI , NAGANO YOSHITAKA
CPC classification number: A47B88/463 , A47B88/963
Abstract: PROBLEM TO BE SOLVED: To provide a door opener, by which a door open-close unit is miniaturized and lightened and a door can be opened efficiently by only one of the operation of a touch switch and which is silent.
SOLUTION: In the slide screw type door opener opening the rotary type door 10 in which one end section is supported rotatably by a hinge, the door opener has a bottomed cylindrical housing 3, a bottomed pusher 6 being internally inserted into the housing 3, being retractably movable by a double-surface forming 6c and 6c shape and being irrotationable, a screw shaft 5 turned by the driving force of the motor 2, a nut 7 being screwed to the screw shaft 5, being internally inserted into the pusher 6, being retractably movable by the double-surface forming 7b and 7b shape and being irrotationable, and a spring 8 housed in an annular space formed of one end face 7a of the nut 7 and the bottom section 6a of the pusher 6, and the pusher 6 is retracted by the forward and reverse rotation of the motor 2 by engaging the other end face 7c of the nut 7 with the pusher 6.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：提供一种门开启装置，通过该开门装置，门开闭单元被小型化和轻量化，并且仅通过触摸开关的操作中的一个而无效地打开门。 解决方案：在滑动螺钉式开门器中，打开旋转式门10，其中一个端部由铰链可旋转地支撑，开启器具有有底圆筒形壳体3，内部插入壳体3中的有底部推动器6， 通过双面成形6c和6c形状可旋转地移动，螺旋轴5由马达2的驱动力转动，螺母7螺纹连接到螺杆轴5，内螺纹固定在推动器6中， 通过双面成形7b和7b形状可收缩地移动并且不可转动，弹簧8容纳在由螺母7的一个端面7a和推动器6的底部6a形成的环形空间中，并且推动器6是 通过使螺母7的另一端面7c与推动器6接合，通过电动机2的正向和反向旋转来缩回。
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公开(公告)号：JP2002372067A
公开(公告)日：2002-12-26
申请号：JP2001183367
申请日：2001-06-18
Applicant: Ntn Corp , エヌティエヌ株式会社
Inventor： SAKAGUCHI AKIO , MAEDA KIKUO
Abstract: PROBLEM TO BE SOLVED: To provide a constant velocity universal coupling for a propeller shaft having excellent heat-resistant dimensional stability, usable even under the operating condition of a large N-θ value and having excellent durability. SOLUTION: In this constant velocity universal coupling for the propeller shaft with a ball 4 interposed between an inner ring 1 and an outer ring 2, the outer ring 2 has a plurality of linear track grooves 9 axially extending on a cylindrical inner peripheral surface, and the inner ring 1 has a plurality of linear track grooves 8 on a convex outer peripheral surface opposedly to the track grooves 9 of the outer ring 2. Both track grooves 8, 9 are provided in cross arrangement, and the ball 4 is built in the cross part of the track grooves 8, 9. The ball 4 is held by the cage 3 arranged between the outer peripheral surface of the inner ring 1 and the inner peripheral surface of the outer ring 2. The ball 4 is formed of heat resistant steel, and the surface hardness after quenching or carbonitriding is 58HRC or more, and the maximum carbon substance dimension is 8 μm or less.
Abstract translation: 要解决的问题：为了提供具有优异的耐热尺寸稳定性的传动轴的等速万能联轴器，即使在大N-θ值的操作条件下并且具有优异的耐久性的情况下也是如此。 解决方案：外圈2在内圈1和外圈2之间具有球4的传动轴恒速万能联轴器中，具有在圆筒形内周面上轴向延伸的多个线性轨道槽9， 内环1在与外圈2的轨道槽9相对的凸形外周面上具有多个线性轨道槽8.两个轨道槽8,9设置成交叉布置，球4内置于 轨道槽8,9的横截面。球4由设置在内圈1的外周面与外圈2的内周面之间的保持架3保持。球4由耐热钢 淬火或碳氮共渗后的表面硬度为58HRC以上，最大碳物质尺寸为8μm以下。
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公开(公告)号：JP3358879B2
公开(公告)日：2002-12-24
申请号：JP17301794
申请日：1994-07-26
Applicant: エヌティエヌ株式会社
Inventor： 隆 安西
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Patent Agency Ranking
公开(公告)号：JP2002370506A
公开(公告)日：2002-12-24
申请号：JP2001178637
申请日：2001-06-13
Applicant: Ntn Corp , エヌティエヌ株式会社
Inventor： UMEKIDA HIKARI
Abstract: PROBLEM TO BE SOLVED: To preclude loosening from being generated in a coupled part even when a great moment load is applied to a device, allow precise pre-load control, and provide a proper pre-load level. SOLUTION: This bearing device is constituted by forming a hub wheel 1, a bearing part 2 and a constant velocity universal joint 3 into a unit. One bearing rolling face 14a is formed in an outer joint member 14 of the universal joint 3, an inner ring 10 of a separate body separated from the hub wheel 1 is fit around the outer joint member 14, a shaft part 16 of the joint member 14 is diameter-expanded, and is bitten into a recess 6 formed in an inner circumference of the hub wheel 1 to couple plastically the hub wheel 1 to the outer joint member 14.
Abstract translation: 要解决的问题：为了防止在耦合部分中产生松动，即使当大的力矩负载施加到装置时，允许精确的预加载控制，并提供适当的预加载水平。 解决方案：该轴承装置通过将轮毂轮1，轴承部件2和等速万向接头3形成为一个单元而构成。 一个轴承滚动面14a形成在万向接头3的外侧接头部件14中，与轮毂圈1分离的分离体的内圈10配合在外侧接头部件14的周围，接头部件的轴部16 14被直径膨胀，并且被咬入形成在轮毂圈1的内圆周中的凹部6中，以将轮毂轮1塑性地接合到外接头构件14。
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公开(公告)号：JPH0728234U
公开(公告)日：1995-05-23
申请号：JP5058593U
申请日：1993-10-29
Applicant: エヌティエヌ株式会社
Abstract: (57)【要約】 【目的】 芯出し作業の容易化、接合強度の確保、熱歪みの抑制。 【構成】 この外輪は、例えば２〜４ｍｍ厚さの鋼板または鋼製パイプ材から冷間プレス成形したカップ状の外輪素材１と、外輪素材１に一体に接合されたステム２とで構成される。 外輪素材１は、動力伝達部となる案内溝１ａ１および保持器案内面１ａ２を内径に有するカップ部１ａと、カップ部１ａの底中心から同軸で一体に連続した筒状の接合部１ｂとからなる。 外輪素材１とステム２との接合は、ステム２の軸端２ａを接合部１ｂに嵌合した後、この嵌合面Ａをレーザビームまたは電子ビームを用いて一体に溶着することによりなされる。
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公开(公告)号：JP2003021159A
公开(公告)日：2003-01-24
申请号：JP2001205228
申请日：2001-07-05
Applicant: Ntn Corp , エヌティエヌ株式会社
Inventor： KOBAYASHI MASAZUMI
IPC: F16D3/227
Abstract: PROBLEM TO BE SOLVED: To suppress a substantial reduction in allowable load torque of an inner ring with a simple means even when a contact ellipse of a ball reaches an axial end of the inner ring, by sliding the ball simultaneously, when the inner ring slides axially.
SOLUTION: A constant velocity universal joint axially forms straight track grooves 26 and 7 respectively on an outer circumference of the inner ring 21 and an inner circumference of an outer ring 2 in oppositely inclined relations to the axis, insets the balls 3 in cross portions of both track grooves 26 and 7, and holds the balls 3 by means of a cage 4 arranged between the outer circumference of the inner ring 21 and the inner circumference of the outer ring 2. The outer circumference of the inner ring 21 is inclined for gradual diameter reduction from a cylindrical middle portion 30a to the axial ends 30c, and the axial ends 30c are formed cylindrically.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：即使当球的接触椭圆到达内圈的轴向端部时，通过同时滑动球来抑制内圈的容许负载扭矩的显着降低，当内圈滑动时 轴向。 解决方案：等速万向接头在内圈21的外圆周和外圈2的内圆周分别轴向形成直线轨道槽26和7，与轴线呈相对倾斜的关系，将球3插入到 两个轨道槽26和7，并且通过设置在内圈21的外周和外圈2的内周之间的保持架4保持滚珠3.内圈21的外圆周是倾斜的 从圆筒状中间部30a到轴向端部30c的直径减小，轴向端部30c形成为圆筒状。
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公开(公告)号：JP2003021147A
公开(公告)日：2003-01-24
申请号：JP2001209271
申请日：2001-07-10
Applicant: Ntn Corp , エヌティエヌ株式会社
Inventor： MURAKAMI HIROSHI , TANAKA HIROMASA
Abstract: PROBLEM TO BE SOLVED: To provide a reproducing method for a rolling bearing that can simply and inexpensively reproduce a rolling bearing fatigued with use, and a rolling bearing by the application of the reproducing method.
SOLUTION: The method for the rolling bearing, is the method for a used rolling bearing, and comprises a process of setting an margin of removal of a surface layer of at least either member of a bearing ring and a rolling element of the used rolling bearing, and a process of removing the margin of removal of the surface layer of the member.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：提供一种滚动轴承的再现方法，其可以简单且廉价地再现使用中疲劳的滚动轴承和通过应用再现方法的滚动轴承。 解决方案：滚动轴承的方法是用于滚动轴承的方法，包括设置滚动轴承的轴承圈和滚动体的至少任一个部件的表面层的去除余量的过程 ，以及除去构件的表面层的去除余量的过程。
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公开(公告)号：JP2003013976A
公开(公告)日：2003-01-15
申请号：JP2001195729
申请日：2001-06-28
Applicant: Ntn Corp , エヌティエヌ株式会社
Inventor： KAWASE TATSUO , WADA MORIHIRO
IPC: F16C33/78
CPC classification number: F16C33/7853 , F16C19/06 , F16C33/7823
Abstract: PROBLEM TO BE SOLVED: To improve either of two inconveniences of leakage of lubricant and invasion of foreign objects from the outside without increasing contact torque of a seal portion.
SOLUTION: A seal member 5 is comprised of a rubber-like elastic body 7 and core metal 6. The seal member 5 is fixed in an outer ring 2 and is opposed to a seal groove 9 of an inner ring 1. The elastic body 7 is provided with a lip supporting portion 7a, an inner lip 11 extending inward, an intermediate lip 12, and an outer lip 13. The inner lip 11 is arranged to keep in contact with a seal groove inner sidewall 9b. The intermediate lip 12 is provided with a parallel pointed end portion 12a approximately parallel to a axial direction of a bearing against a seal groove bottom surface 9a and is also arranged to be in non-contact with the seal groove bottom surface 9a. The outer lip 13 has an opposing portion to an outer peripheral surface of a shoulder portion 1c of outside the bearing rather than a seal groove 9 of an inner ring and is also arranged to keep in non-contact with the outer peripheral surface of the shoulder portion 1c via a gap existed between the outer lip and outer peripheral surface of the shoulder portion.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：为了改善润滑剂泄漏和异物从外部侵入的两个不便之处，而不增加密封部分的接触扭矩。 解决方案：密封构件5由橡胶状弹性体7和芯金属6构成。密封构件5固定在外圈2中并与内圈1的密封槽9相对。弹性体7 设置有唇支撑部分7a，向内延伸的内唇11，中间唇缘12和外唇部13.内唇缘11设置成与密封槽内侧壁9b保持接触。 中间唇缘12设置有平行的尖端部分12a，其大致平行于轴承的轴向方向抵靠密封槽底面9a，并且还布置成与密封槽底面9a不接触。 外唇部13具有与轴承外侧的肩部1c的外周面相对的部分，而不是内圈的密封槽9，并且还配置成与肩部的外周面不接触 部分1c经由位于肩部的外唇缘和外周表面之间的间隙存在。
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