JPH0241670B2 - - Google Patents
Info
- Publication number
- JPH0241670B2 JPH0241670B2 JP57106242A JP10624282A JPH0241670B2 JP H0241670 B2 JPH0241670 B2 JP H0241670B2 JP 57106242 A JP57106242 A JP 57106242A JP 10624282 A JP10624282 A JP 10624282A JP H0241670 B2 JPH0241670 B2 JP H0241670B2
- Authority
- JP
- Japan
- Prior art keywords
- preload
- nut
- ball
- thread groove
- axial direction
- 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.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
- F16H25/2209—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with arrangements for taking up backlash
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Description
【発明の詳細な説明】
本発明は容易に予圧をかけることができるボー
ルネジの予圧ナツトとその製造方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a preload nut for a ball screw that can easily be preloaded, and a method for manufacturing the same.
一般に、ボールネジはネジ軸とナツトとの伝動
作用を確実にするために、ナツトを前後２個の組
合せとし、この２個のナツト間に予圧調整リング
等の予圧部品を介装して、２個のナツト間に予め
引張り又は圧縮力を加え、ネジ軸とナツトで形成
される円形断面の通路内壁にボールを圧接させて
いる。しかしながら、これらは予圧部品の点数も
多く、構造が複雑で、予圧の調整も容易でない等
の欠点を有している。 In general, in order to ensure transmission between the screw shaft and the nut, ball screws are made up of two nuts, front and back, and a preload component such as a preload adjustment ring is inserted between these two nuts. A tensile or compressive force is applied in advance between the nuts, and the ball is brought into pressure contact with the inner wall of the passage having a circular cross section formed by the screw shaft and the nut. However, these have drawbacks such as a large number of preload parts, a complicated structure, and difficulty in adjusting the preload.
本発明は特別な予圧部品を必要とせずに、しか
も容易に確実に予圧をボールネジにかけられる、
極めて簡単な構成の予圧ナツトとその製造方法を
提供するものである。 The present invention does not require special preload parts and can easily and reliably apply preload to a ball screw.
The present invention provides a preload nut having an extremely simple configuration and a method for manufacturing the same.
即ち、本発明のボールネジの予圧ナツトは、軸
方向の特定区間に軸方向の弾性変形を可能にする
螺旋状のスリツトを設け、該区間に弾性変形時に
他の区間の雌ネジ溝のピツチと同じになるピツチ
の雌ネジ溝を有するもので、本発明のボールネジ
の予圧ナツトの製造方法は、筒体に螺旋状のスリ
ツトを形成したのち、該スリツトを形成した筒体
に軸方向に予圧をかけた状態で筒体内周面に雌ネ
ジ溝を形成するものである。 That is, the preload nut of the ball screw of the present invention is provided with a spiral slit that enables elastic deformation in the axial direction in a specific section in the axial direction. The method for manufacturing a ball screw preload nut of the present invention includes forming a spiral slit in a cylinder, and then applying preload in the axial direction to the cylinder with the slit formed therein. In this state, a female thread groove is formed on the inner circumferential surface of the cylinder.
以下本発明の実施例を図面に基づいて説明す
る。１はボールネジ、２は全長に亘つて外周面に
２条の雄ネジ溝３を形成したネジ軸、４はネジ軸
２にボール５を介して外嵌した予圧ナツト、６は
ボール５を循環させるボールチユーブである。 Embodiments of the present invention will be described below based on the drawings. 1 is a ball screw, 2 is a screw shaft with two male thread grooves 3 formed on its outer circumferential surface over its entire length, 4 is a preload nut externally fitted onto the screw shaft 2 via balls 5, and 6 is for circulating the balls 5. It is a ball tube.
前記予圧ナツト４は次のようにして製造したも
のである。まず、円筒体の軸方向中央部に、螺旋
の巻方向とリードがネジ軸２のネジ溝３と等しい
螺旋状のスリツト７（巻数１）と、該スリツト７
と位相を180゜異にするもう一つのスリツト７′と
の２条のスリツトを形成する。螺旋の巻数は0.5
〜1.5程度でよいが、勿論それ以上でもよく、又
２条の螺旋スリツトに限らないことは勿論であ
る。 The preload nut 4 was manufactured as follows. First, a spiral slit 7 (number of turns 1) whose winding direction and lead are equal to the thread groove 3 of the screw shaft 2 is provided in the axial center of the cylindrical body.
and another slit 7' having a phase difference of 180°, forming two slits. The number of turns in the spiral is 0.5
-1.5, but of course it may be larger, and is not limited to two spiral slits.
次に、スリツト７，７′を形成した円筒体に、
治具で軸方向に予圧（以下圧縮の場合を述べる
が、引張りの場合も同じである。）をかける。し
たがつて、２条のスリツト７，７′で挾まれた部
分８が実質的にコイルバネの役目を果し、予圧に
応じて圧縮される。 Next, on the cylindrical body in which the slits 7 and 7' were formed,
Apply a preload (the case of compression will be described below, but the same applies to the case of tension) in the axial direction using a jig. Therefore, the portion 8 sandwiched between the two slits 7, 7' substantially functions as a coil spring and is compressed according to the preload.
そして、該予圧をかけた円筒体の内周面に、ネ
ジ軸２の２条の雄ネジ溝３と同一ピツチの雌ネジ
溝９を、前記スリツト部で雌ネジ溝９がスリツト
７，７′で挾まれた部分８に位置するように形成
する。 Then, on the inner circumferential surface of the preloaded cylindrical body, a female thread groove 9 of the same pitch as the two male thread grooves 3 of the screw shaft 2 is formed at the slit portion, and the female thread groove 9 is formed in the slits 7, 7'. It is formed so as to be located at the part 8 sandwiched between the two.
以上のようにして形成した予圧ナツト４を、ボ
ール５を介装してネジ軸２に組み込んだのち、治
具の予圧を解放すれば、予圧ナツト４は軸方向に
伸びて、ネジ軸２と予圧ナツト４の夫々のネジ溝
３，９で形成される円形断面のボール通路１０内
壁にボール５を圧接させる。 After the preload nut 4 formed as described above is assembled into the screw shaft 2 with the ball 5 interposed therebetween, when the preload of the jig is released, the preload nut 4 extends in the axial direction and connects with the screw shaft 2. The ball 5 is brought into pressure contact with the inner wall of a ball passage 10 having a circular cross section formed by the thread grooves 3 and 9 of the preload nut 4.
以上のように、本発明の予圧ナツトは治具によ
つて加えた予圧に等しい予圧をボールネジに簡単
にかけることができ、しかも従来のように予圧を
かけるために２個のナツト及び予圧調整リング等
の予圧部品は必要とせず、一体構造の１個の予圧
ナツトだけで予圧をかけることができるので、ボ
ールネジの構造が簡単でコストも低減化するとい
う優れた効果を有しているものである。そして、
本発明の製造方法によれば、本発明の優れたボー
ルネジの予圧ナツトが簡単に製造できるものであ
る。 As described above, the preload nut of the present invention can easily apply a preload equal to the preload applied by the jig to the ball screw, and in addition, unlike the conventional method, two nuts and a preload adjustment ring are required to apply the preload. It does not require any preload parts such as, and preload can be applied with just one integrated preload nut, which has the excellent effect of simplifying the structure of the ball screw and reducing costs. . and,
According to the manufacturing method of the present invention, the excellent ball screw preload nut of the present invention can be easily manufactured.
図面は本発明の実施例を示し、第１図は正面
図、第２図は縦断面図である。
１……ボールネジ、２……ネジ軸、３……雄ネ
ジ溝、４……予圧ナツト、５……ボール、６……
ボールチユーブ、７，７′……スリツト、８……
スリツトで挾まれた部分、９……雌ネジ溝、１０
……ボール通路。
The drawings show an embodiment of the invention, with FIG. 1 being a front view and FIG. 2 being a longitudinal sectional view. 1...Ball screw, 2...Screw shaft, 3...Male thread groove, 4...Preload nut, 5...Ball, 6...
Ball tube, 7, 7'...slit, 8...
Part held by slit, 9...Female thread groove, 10
...Ball passage.
Claims (1)
にする螺旋状のスリツトを設け、該区間に弾性変
形時に他の区間の雌ネジ溝のピツチと同じになる
ピツチの雌ネジ溝を有するボールネジの予圧ナツ
ト ２ 筒体に螺旋状のスリツトを形成したのち、該
スリツトを形成した筒体に軸方向に予圧をかけた
状態で筒体内周面に雌ネジ溝を形成するボールネ
ジの予圧ナツトの製造方法。[Claims] 1. A spiral slit that enables elastic deformation in the axial direction is provided in a specific section in the axial direction, and the pitch is the same as the pitch of the female thread groove in other sections when the section is elastically deformed. Preload nut for ball screw with female thread groove 2 After forming a spiral slit in a cylinder, a female thread groove is formed on the inner circumferential surface of the cylinder while applying preload in the axial direction to the cylinder with the slit formed therein. A method of manufacturing a preload nut for a ball screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10624282A JPS58225255A (en) | 1982-06-22 | 1982-06-22 | Ball screw pre-loading nut and manufacture of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10624282A JPS58225255A (en) | 1982-06-22 | 1982-06-22 | Ball screw pre-loading nut and manufacture of the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58225255A JPS58225255A (en) | 1983-12-27 |
| JPH0241670B2 true JPH0241670B2 (en) | 1990-09-18 |
Family
ID=14428642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10624282A Granted JPS58225255A (en) | 1982-06-22 | 1982-06-22 | Ball screw pre-loading nut and manufacture of the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58225255A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2650796B2 (en) * | 1991-03-15 | 1997-09-03 | テイエチケー株式会社 | Manufacturing method of ball nut |
| DE4142099C2 (en) * | 1991-12-19 | 1994-01-13 | Evangelos Retzios | Bush-like drive element |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS423366Y1 (en) * | 1964-11-25 | 1967-02-28 |
-
1982
- 1982-06-22 JP JP10624282A patent/JPS58225255A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58225255A (en) | 1983-12-27 |
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