JP2007232203A - Ball screw - Google Patents

Ball screw Download PDF

Info

Publication number
JP2007232203A
JP2007232203A JP2006095688A JP2006095688A JP2007232203A JP 2007232203 A JP2007232203 A JP 2007232203A JP 2006095688 A JP2006095688 A JP 2006095688A JP 2006095688 A JP2006095688 A JP 2006095688A JP 2007232203 A JP2007232203 A JP 2007232203A
Authority
JP
Japan
Prior art keywords
ball screw
nut
screw
lead
nut member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2006095688A
Other languages
Japanese (ja)
Inventor
Tomoyoshi Ekusa
友良 江草
Takuo Sasaoka
拓郎 笹岡
Okihiko Tsuda
沖彦 津田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Esuaidou Kk
Original Assignee
Esuaidou Kk
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Esuaidou Kk filed Critical Esuaidou Kk
Priority to JP2006095688A priority Critical patent/JP2007232203A/en
Publication of JP2007232203A publication Critical patent/JP2007232203A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Transmission Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To reciprocate a ball screw at a high speed by increasing a lead of the ball screw by three or more times. <P>SOLUTION: This ball screw has the lead of three time or more of a pitch diameter, a nut inner cylindrical portion 1a of a nut member 1 is formed by plasticity processing such as hydraulic press, and plastic, rubber, wood, magnesium, aluminum and their combined material is placed on a nut outer cylindrical portion 1b to absorb vibration generated on a ball screw part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、機械の往復動などに使用する高速ボールねじに関する。  The present invention relates to a high-speed ball screw used for reciprocation of a machine.

従来の、機械の往復動などに使用するボールねじは、高速の往復動を得ようとするときには、ねじ軸の回転数を大きくするか、またはボールねじのリードを大きくするかのいずれかであった。  Conventional ball screws used for mechanical reciprocation, for example, either increase the rotational speed of the screw shaft or increase the lead of the ball screw when attempting to obtain high-speed reciprocation. It was.

しかしながら、以上の技術によれば、ねじ軸の回転数は、軸の長さにより縄跳び現象や振動などのために限界があり、リードについては、ねじ軸は転造加工によりピッチ円直径の３倍以上が可能であるが、ナットは実績で、２．５倍程度が限界であった。
そこで、この発明は、リードがピッチ円直系の３倍程度以上のボールねじを提供することを課題とする。However, according to the above technology, the number of rotations of the screw shaft is limited due to the jumping phenomenon and vibration depending on the length of the shaft, and for the lead, the screw shaft is three times the pitch circle diameter by rolling. The above is possible, but the nut has a track record and about 2.5 times the limit.
Accordingly, an object of the present invention is to provide a ball screw whose lead is about three times as large as the pitch circular system.

以上の課題を解決するために、第一発明は、ボールねじのリードをピッチ円直径の３倍以上としたことを特徴とする高速ボールねじである。
また、第二発明は、ナット部材１のナット内筒部１ａを、液圧プレスなどの塑性加工により実現したことを特徴とする高速ボールねじある。
また、第三発明は、ナット外筒部１ｂにたとえばプラスチックやゴム、木材、マグネシウム、アルミニウム、及びこれらの複合材を介在させて、ボールねじ部分で発生する振動を吸収するようにしたことを特長とする高速ボールねじである。In order to solve the above problems, the first invention is a high-speed ball screw characterized in that the lead of the ball screw is set to be three times or more the pitch circle diameter.
The second invention is a high-speed ball screw characterized in that the nut inner cylindrical portion 1a of the nut member 1 is realized by plastic working such as a hydraulic press.
Further, the third invention is characterized in that, for example, plastic, rubber, wood, magnesium, aluminum, and a composite material thereof are interposed in the nut outer cylinder portion 1b to absorb vibration generated in the ball screw portion. It is a high-speed ball screw.

第一発明、または第二発明、または第三発明によれば、ボールねじのリードを３倍程度以上にしたことで、ボールねじの高速往復動が可能になった。  According to the first invention, the second invention, or the third invention, the ball screw lead can be reciprocated at a high speed by increasing the lead of the ball screw by about three times or more.

この発明の一実施形態を、図１に示す。
ボールねじのナット部材１は、ナット内筒部１ａとナット外筒部１ｂとで構成されている。２はねじ軸である。ナット部材１の両側に、左エンドキャップ３と右エンドキャップ４がナット部材１にねじ止めされている。この左エンドキャップ３と右エンドキャップ４は、ねじ軸２が回転し、ナット部材１が往復動したときに、ボール５がナット部材１の端部に来たときに、ボール５を受け止めて、ナット外筒部１ｂに設けられているボールリターン穴１ｃを介して反対側のエンドキャップまで戻して、ボール５を循環させるものである。ナット内筒部１ａは薄肉の円筒部材を液圧プレスにより精密に成形したものであり、液圧プレスには螺旋溝のリードなどに制約がないため、ねじのピッチ円径の３倍以上の加工はできるのである。成形後焼入れにより硬化させてある。またナット外筒部１ｂは熱硬化性プラスチック材料で、内筒部１ａと一緒に成型加工により一体化されている。（尚この成型時、内筒部１ａの変形修正用ジグを使用することで焼き入れ時及び成型時の変形を押さえることが出来る。）これにより、ボールねじ部で発生する振動なども軽減される。ねじ軸２は転造加工により、ピッチ円直径の３倍以上のリード加工はできるので、加工後熱処理をして、ナット部材１との間にボール５を入れて組み立て、完成させる。One embodiment of the present invention is shown in FIG.
The nut member 1 of the ball screw is composed of a nut inner tube portion 1a and a nut outer tube portion 1b. 2 is a screw shaft. A left end cap 3 and a right end cap 4 are screwed to the nut member 1 on both sides of the nut member 1. When the screw shaft 2 rotates and the nut member 1 reciprocates, the left end cap 3 and the right end cap 4 receive the ball 5 when the ball 5 comes to the end of the nut member 1. The ball 5 is circulated by returning to the end cap on the opposite side through a ball return hole 1c provided in the nut outer cylinder portion 1b. The nut inner cylinder portion 1a is a thin cylindrical member precisely formed by hydraulic press, and since there is no restriction on the lead of the spiral groove in the hydraulic press, machining more than 3 times the pitch circle diameter of the screw Can do it. It is hardened by quenching after molding. Moreover, the nut outer cylinder part 1b is a thermosetting plastic material, and is integrated with the inner cylinder part 1a by a molding process. (At the time of molding, the deformation at the time of quenching and molding can be suppressed by using the deformation correcting jig of the inner cylinder portion 1a.) Thereby, vibration generated at the ball screw portion is also reduced. . Since the threaded shaft 2 can be processed by a rolling process so that the lead diameter is three times as large as the pitch circle diameter, heat treatment is performed after the process, and the ball 5 is inserted between the nut member 1 and assembled.

「実施形態の効果」
この実施形態によれば、ねじ軸２の回転数を過度に上げることなく、ナット部材１の高速往復動が可能になった。また、動作時の振動もナット外筒部１ｂの振動吸収材質の効果により軽減された。"Effect of the embodiment"
According to this embodiment, the nut member 1 can be reciprocated at high speed without excessively increasing the rotational speed of the screw shaft 2. Moreover, vibration during operation was also reduced by the effect of the vibration absorbing material of the nut outer cylinder portion 1b.

「他の実施形態」
図１の実施形態では、ナット外筒部１ｂの使用材料は熱硬化性プラスチックであったが、他の実施形態では、ほかのプラスチックやゴム、木材、マグネシウム、アルミニウム、及びこれらの複合材を使用したものでも良い。"Other embodiments"
In the embodiment of FIG. 1, the material used for the nut outer cylinder portion 1 b is a thermosetting plastic, but in other embodiments, other plastics, rubber, wood, magnesium, aluminum, and a composite material thereof are used. What you did is fine.

この発明の一実施形態を示す断面図である。It is sectional drawing which shows one Embodiment of this invention. １ａ ナット内筒部単体1a Nut inner cylinder unit

符号の説明Explanation of symbols

１ ナット部材（全体） １ａ ナット内筒部 １ｂ ナット外筒部
１ｃ ボールのリターン穴 ２ ねじ軸 ３ 左エンドキャップ
４ 右エンドキャップ ５ ボールDESCRIPTION OF SYMBOLS 1 Nut member (whole) 1a Nut inner cylinder part 1b Nut outer cylinder part 1c Return hole of a ball 2 Screw shaft 3 Left end cap 4 Right end cap 5 Ball

Claims (3)

ナット部材１とねじ軸２とエンドキャップ３、４とその間に配置されたボール５とにより構成されたボールねじにおいて、ねじのリードをねじのピッチ円直径の３倍程度以上としたことを特徴とする高速ボールねじ。In the ball screw constituted by the nut member 1, the screw shaft 2, the end caps 3 and 4, and the ball 5 disposed therebetween, the screw lead is characterized by being about three times the pitch circle diameter of the screw or more. High speed ball screw. 前記ボールねじは、ナット部材１の螺旋溝部分のリードをねじピッチ円直径の３倍程度以上とするために、ナット部材１のナット内筒部１ａを、液圧プレスなどの塑性加工により実現したことを特徴とする請求項１記載の高速ボールねじ。In the ball screw, the nut inner cylindrical portion 1a of the nut member 1 is realized by plastic working such as a hydraulic press so that the lead of the spiral groove portion of the nut member 1 is about three times the thread pitch circle diameter or more. The high-speed ball screw according to claim 1. 前記ボールねじは、ナット部材１をナット内筒部１ａとナット外筒部１ｂとで構成させているが、このナット外筒部１ｂにたとえばプラスチックやゴム、木材、マグネシウム、アルミニウム、及びこれらの複合材を介在させて、ボールねじ部分で発生する振動を吸収するようにしたことを特長とする請求項１記載の高速ボールねじ。In the ball screw, the nut member 1 is constituted by a nut inner cylinder portion 1a and a nut outer cylinder portion 1b. The nut outer cylinder portion 1b is made of, for example, plastic, rubber, wood, magnesium, aluminum, and a composite thereof. 2. The high-speed ball screw according to claim 1, wherein a material is interposed to absorb vibration generated in the ball screw portion.
JP2006095688A 2006-03-02 2006-03-02 Ball screw Pending JP2007232203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006095688A JP2007232203A (en) 2006-03-02 2006-03-02 Ball screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006095688A JP2007232203A (en) 2006-03-02 2006-03-02 Ball screw

Publications (1)

Publication Number Publication Date
JP2007232203A true JP2007232203A (en) 2007-09-13

Family

ID=38552989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006095688A Pending JP2007232203A (en) 2006-03-02 2006-03-02 Ball screw

Country Status (1)

Country Link
JP (1) JP2007232203A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5419053A (en) * 1977-07-12 1979-02-13 Nippon Seiko Kk Nut for ball screw device
JPS54115434U (en) * 1978-02-03 1979-08-13
JPH094690A (en) * 1995-06-19 1997-01-07 Thk Kk Ball screw device and manufacture therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5419053A (en) * 1977-07-12 1979-02-13 Nippon Seiko Kk Nut for ball screw device
JPS54115434U (en) * 1978-02-03 1979-08-13
JPH094690A (en) * 1995-06-19 1997-01-07 Thk Kk Ball screw device and manufacture therefor

Similar Documents

Publication Publication Date Title
ES2488414T3 (en) Method of forming a high-performance self-tapping screw
KR20080064865A (en) Ball screw device
ATE495472T1 (en) CYLINDER RINGS
JP2010236602A5 (en)
JP2007232203A (en) Ball screw
EP2077407A3 (en) Ball screw
KR200478051Y1 (en) Ball screw
JP2007205462A (en) Ball screw device
JP2016084894A (en) Linear motion table device
RU2008124828A (en) METHOD FOR MANUFACTURING A THREADED SHAFT, A SHAFT MANUFACTURED BY THIS METHOD, AND A METABLE SOLID
CN102794462A (en) Circular arc clamp for turning
JP2009204084A5 (en)
JP2015000460A (en) Stage mechanism
CN201982448U (en) Pull-rod nut of injection molding machine
JP2011189447A (en) Collet chuck
JP2007155037A (en) Spline device and screw device
JP2023119334A (en) Ball screw and machine tool using the same
JP2007154974A (en) Ball screw device
CN203636379U (en) Seamless clamping positioning device for thin-wall external threads
JP2010090908A5 (en)
CN202241148U (en) Broken-end tap extractor
JP2004278595A (en) Ball screw device
JP5381020B2 (en) Ball screw device for servo press device and servo press device using the same
TWI495809B (en) Ball screw device with holding temperature function
JP2012166246A (en) Mandrel for bending

Legal Events

Date Code Title Description
A621 Written request for application examination

Effective date: 20090218

Free format text: JAPANESE INTERMEDIATE CODE: A621

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110324

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110329

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20110809