WO2022210223A1 - 多条ボールねじ - Google Patents
多条ボールねじ Download PDFInfo
- Publication number
- WO2022210223A1 WO2022210223A1 PCT/JP2022/013763 JP2022013763W WO2022210223A1 WO 2022210223 A1 WO2022210223 A1 WO 2022210223A1 JP 2022013763 W JP2022013763 W JP 2022013763W WO 2022210223 A1 WO2022210223 A1 WO 2022210223A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spiral groove
- nut
- spiral
- groove
- row
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000003754 machining Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
Images
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
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
-
- 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
-
- 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
- F16H2025/2242—Thread profile of the screw or nut showing a pointed "gothic" arch in cross-section
-
- 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
- F16H25/2214—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with elements for guiding the circulating balls
- F16H25/2223—Cross over deflectors between adjacent thread turns, e.g. S-form deflectors connecting neighbouring threads
Definitions
- the present invention relates to a multi-start ball screw, and more particularly to a multi-start ball screw used in electric injection molding machines, press machines, etc. as a mechanical element that converts rotary motion into linear motion.
- a ball screw generally comprises a screw shaft having a spiral groove formed on its outer peripheral surface, a cylindrical nut having a spiral groove formed on its inner peripheral surface and mounted on the outer periphery of the screw shaft, and between the spiral grooves. and a plurality of balls incorporated therein for converting rotary motion of one of the screw shaft and nut into linear motion of the other.
- the spiral grooves of the screw shaft and nut are wide and U-shaped (cross-sectional shape), and two balls are arranged in these spiral grooves.
- the present invention has been made in view of the above-mentioned problems, and its object is to provide a multi-start ball screw having a nut with a U-shaped spiral groove accommodating two balls and having high dimensional accuracy. That's what it is.
- a nut having multiple spiral grooves on its inner peripheral surface; a screw shaft having multiple spiral grooves on its outer peripheral surface; a plurality of balls arranged to roll on a rolling path composed of multiple spiral grooves of the nut and multiple spiral grooves of the screw shaft;
- a multi-start ball screw comprising The multi-threaded spiral groove of the nut includes a U-shaped first spiral groove having left and right flanks spaced apart in the axial direction and capable of contacting two balls, respectively, and continuous with each thread of the first spiral groove. and two second spiral grooves having left and right flanks capable of two-point contact with the ball.
- the second spiral groove enables accurate measurement of the diagonal dimension, and as a result, the first spiral groove can be ground based on the accurate diagonal dimension,
- a multi-start ball screw having a nut with a U-shaped first spiral groove having high dimensional accuracy can be provided.
- FIG. 1 is an external perspective view of a multi-start ball screw according to an embodiment of the present invention
- FIG. 2 is a cross-sectional view of the multi-start ball screw of FIG. 1
- FIG. 4 is a cross-sectional view of a main part showing a helical groove of a nut
- 4 is an enlarged cross-sectional view of the first spiral groove shown in FIG. 3
- FIG. 4 is an enlarged cross-sectional view of the second spiral groove shown in FIG. 3
- FIG. FIG. 4 is a schematic cross-sectional view showing a state of nut grinding.
- FIG. 4 is a schematic front view showing a state of nut grinding.
- the multi-start ball screw 1 of this embodiment includes a nut 4 having a multi-start spiral groove 40 on the inner peripheral surface and a screw shaft having a multi-start spiral groove 30 on the outer peripheral surface. 3, and a plurality of steel balls 6 arranged to be able to roll in a rolling path 20 composed of both spiral grooves 40, 30.
- a seal ring 10 is fitted on the inner periphery of both ends of the nut 4 to prevent leakage of lubricating oil between the nut 4 and the screw shaft 3 .
- a constituent material of the nut 4 for example, tough steel such as chrome molybdenum steel is used.
- the nut 4 has a disc-shaped flange 8 on one end side (left side in FIG. 1) of a cylindrical nut body portion 4a, and the flange 8 is provided with a bolt through hole 8a as necessary. Therefore, in the multi-start ball screw 1, for example, the screw shaft 3 is connected to a drive means (such as a shaft of an electric motor) (not shown) and driven to rotate in both forward and reverse directions, while the nut 4 is connected to the bolt through hole.
- a driven member (not shown) (a driven member such as an electric injection molding machine, a press machine, or a conveying machine) is fastened to the flange 8 via 8a for use.
- a return tube 5 is fastened by a tube clamp 7 .
- the return tube 5 is formed by bending a steel pipe into a substantially U-shape. It is connected to the rolling path 20 .
- two ball circulation paths two circuits in which a large number of balls 6 move and circulate within the rolling path 20 via each return tube 5 are formed.
- the helical groove 40 of the nut 4 includes a U-shaped first helical groove 41 having left and right flanks 41c spaced apart in the axial direction and capable of contacting the two balls 6, respectively. , and two second spiral grooves 42 having left and right flanks 42c that are continuous with each thread of the first spiral groove 41 and that can come into contact with the ball 6 at two points. Note that left and right mean both sides in the direction along the central axis CL in FIG. 2 .
- the first spiral groove 41 has a cylindrical groove bottom 41b between the left and right flanks 41c between adjacent ridges 43, and is formed in a U-shape wide in the left-right direction. Therefore, in the first spiral groove 41, the left flank 41c and the right flank 41c respectively support two rows of balls 6 of two circuits.
- the second spiral groove 42 has left and right flanks 42c having substantially the same shape as the left and right flanks 41c of the first spiral groove. formed in
- the second spiral groove 42 is continuous with the first spiral groove 41 axially outside the ball scooping portion of the ball circulation path, the left and right flanks 42c do not have actual balls.
- 6 does not circulate, as will be described later, a jig having the same spherical shape as the ball 6 or a measuring terminal having a spherical portion having the same size as the ball 6 is brought into contact at two points.
- the first spiral groove 41 has a shape obtained by removing an intermediate ridge portion 44 (shaded portion in FIG. 5) formed between the second spiral grooves 42. It is formed by cutting off the intermediate rib portion 44 after or simultaneously with the formation of the groove 42 .
- the spiral groove 30 of the screw shaft 3 is also configured as a U-shaped wide groove that can accommodate two balls 6 side by side in the direction of the central axis CL, and has a cross section substantially similar to that of the first spiral groove 41 of the nut 4. Shape. Therefore, the ball 6 in the spiral groove 30 is supported by the flanks 30c formed on both left and right sides.
- tough steel such as chrome molybdenum steel can be used.
- the spiral groove 30 of the screw shaft 3 and the first spiral groove 41 of the nut 4 are arranged such that the protrusion 31 of the screw shaft 3 is in the axially intermediate portion of the first spiral groove 41 and the protrusion 43 of the nut 4 is in the spiral groove.
- Rolling paths 20 are formed so as to face each of the intermediate portions in the axial direction of 30 .
- the balls 6 are sandwiched between the flank 30c of the screw shaft 3 and the flank 41c of the nut 4.
- the plurality of balls 6 incorporated between the helical groove 30 and the first helical groove 41 roll in the rolling path 20 as the screw shaft 3 rotates relative to the nut 4.
- the plurality of balls 6 roll in the rolling path 20 to smoothly move the nut 4 in the axial direction.
- a multi-start ball screw 1 having
- the first helical groove 41 and the second helical groove 42 are cut on the inner peripheral surface of the nut body 4a by a lathe, and then carburizing heat treatment equipment or high frequency Heat treatment (quenching) is performed using a heat treatment device. After that, processing is performed to form the first spiral groove 41 with a predetermined dimension. Machining is performed by turning, but grinding may be performed after turning. At this time, dimension measurement is performed to determine the amount of machining, the amount of cutting and the amount of grinding are calculated from the result of the dimension measurement, and turning and grinding are performed.
- the oblique diameter dimension D of the second spiral groove 42 (the dimension between the grooves facing each other at a 180° phase with the groove advanced by 0.5 lead) was measured. Measure. Therefore, at least one of the second spiral grooves 42 leaves 0.5 lead (indicated by dimension L in FIG. 2) or more. Further, the oblique diameter dimension D of the portion of the second spiral groove 42 is the same as the oblique diameter dimension of the first spiral groove 41 . That is, since the first spiral groove 41 has a shape obtained by removing the intermediate ridge portion 44 between the two second spiral grooves 42, the oblique diameter dimension D between the grooves of the second spiral grooves 42 is the first spiral. It represents the diagonal dimension of the groove 41 . During measurement, the ball-shaped jig or the measuring terminal is stably held by the left and right flanks 42c of the second spiral groove 42, so the oblique diameter dimension D can be measured accurately.
- the other second spiral groove 42 is formed on the opposite side of the one second spiral groove 42 by 180° at the same position in the two axial directions. It is Therefore, it suffices if there is a groove short enough to set the measuring jig and the measuring terminal, and the groove length L1 of the second spiral groove 42 should be equal to or greater than the diameter of the ball.
- a quill 50 used for grinding has a pair of grindstones 51 matching the shape of the flank 41c of the first spiral groove 41, and is inclined along the lead angle ⁇ of the first spiral groove 41 with respect to the central axis CL.
- each flank 41c of the adjacent first spiral groove 41 and the left and right of the adjacent second spiral groove 42 which are on the left and right sides of the protrusion 43, Machining the flank 42c.
- the nut 4 having the first spiral groove 41 with high dimensional accuracy can be formed.
- the present invention is not limited to the above-described embodiments, and can be modified, improved, etc. as appropriate.
- the second spiral groove 42 for measuring the diagonal dimension may be formed in the screw shaft 3 .
- the screw shaft 3 having the spiral groove 30 with high dimensional accuracy by processing the oblique diameter dimension of the screw shaft 3 with high accuracy.
- a multi-start ball screw comprising The multi-threaded spiral groove of the nut includes a U-shaped first spiral groove having left and right flanks spaced apart in the axial direction and capable of contacting two balls, respectively, and continuous with each thread of the first spiral groove. and two second spiral grooves having left and right flanks capable of two-point contact with the ball.
- the first spiral groove can be processed based on the accurate diagonal dimension, resulting in a U-shaped spiral groove.
- the measuring terminal can be set, and the oblique diameter dimension can be measured in the second spiral groove.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
Description
内周面に多条の螺旋溝を有するナットと、
外周面に多条の螺旋溝を有するねじ軸と、
前記ナットの多条の螺旋溝と前記ねじ軸の多条の螺旋溝とで構成される転動路に転動可能に配置される複数のボールと、
を備える多条ボールねじであって、
前記ナットの多条の螺旋溝は、2条のボールとそれぞれ接触可能な、軸方向に離間した左右のフランクを有するU字状の第1螺旋溝と、該第1螺旋溝の各条と連続し、前記ボールと2点接触可能な左右のフランクを有する2条の第2螺旋溝と、を有する、多条ボールねじ。
本実施形態の多条ボールねじ1は、図1及び図2に示すように、内周面に多条の螺旋溝40を有するナット4と、外周面に多条の螺旋溝30を有するねじ軸3と、両螺旋溝40,30とで構成される転動路20に転動可能に配置される複数の鋼球のボール6と、を備える。
その後、第1螺旋溝41を所定の寸法に形成するための加工を行う。加工は旋削加工で行われるが、旋削加工後に研削加工を行っても良い。この際、加工量を決定するための寸法測定を行い、寸法測定結果から切削量、研削量を算出して、旋削加工、研削加工を実施する。
また、第2螺旋溝42の部分の斜径寸法Dは、第1螺旋溝41の斜径寸法と同じ寸法である。すなわち、第1螺旋溝41は、2条の第2螺旋溝42間の中間突条部44を切除した形状であることから、第2螺旋溝42の溝間の斜径寸法Dが第1螺旋溝41の斜径寸法を表している。
そして、測定の際には、ボール状の治具又は測定端子は、第2螺旋溝42の左右のフランク42cによって安定して保持されるので、斜径寸法Dを正確に測定することができる。
このようにして、第2螺旋溝42の斜径寸法Dを測定しながら加工することで、高い寸法精度を持った第1螺旋溝41を持ったナット4を形成することができる。
(1) 内周面に多条の螺旋溝を有するナットと、
外周面に多条の螺旋溝を有するねじ軸と、
前記ナットの多条の螺旋溝と前記ねじ軸の多条の螺旋溝とで構成される転動路に転動可能に配置される複数のボールと、
を備える多条ボールねじであって、
前記ナットの多条の螺旋溝は、2条のボールとそれぞれ接触可能な、軸方向に離間した左右のフランクを有するU字状の第1螺旋溝と、該第1螺旋溝の各条と連続し、前記ボールと2点接触可能な左右のフランクを有する2条の第2螺旋溝と、を有する、多条ボールねじ。
この構成によれば、第2螺旋溝によって正確な斜径寸法の測定が可能となり、この結果、正確な斜径寸法に基づいて第1螺旋溝を加工することができ、U字状の螺旋溝が高い寸法精度を持ったナットを有する多条ボールねじを提供できる。
この構成によれば、第2螺旋溝は、第2螺旋溝の斜径寸法を正確に測定することができる。
この構成によれば、測定端子をセットでき、第2螺旋溝において斜径寸法を測定することができる。
3 ねじ軸
4 ナット
20 転動路
30、40 螺旋溝
41 第1螺旋溝
42 第2螺旋溝
CL 中心軸線
D 斜径寸法
Claims (3)
- 内周面に多条の螺旋溝を有するナットと、
外周面に多条の螺旋溝を有するねじ軸と、
前記ナットの多条の螺旋溝と前記ねじ軸の多条の螺旋溝とで構成される転動路に転動可能に配置される複数のボールと、
を備える多条ボールねじであって、
前記ナットの多条の螺旋溝は、2条のボールとそれぞれ接触可能な、軸方向に離間した左右のフランクを有するU字状の第1螺旋溝と、該第1螺旋溝の各条と連続し、前記ボールと2点接触可能な左右のフランクを有する2条の第2螺旋溝と、を有する、多条ボールねじ。 - 前記第2螺旋溝は、0.5リード以上形成される、請求項1に記載の多条ボールねじ。
- 前記第2螺旋溝の溝長さは、前記ボールの直径以上である、請求項1又は2に記載の多条ボールねじ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/285,049 US20240191789A1 (en) | 2021-03-31 | 2022-03-23 | Multi-row ball screw |
JP2023511096A JPWO2022210223A1 (ja) | 2021-03-31 | 2022-03-23 | |
CN202280026372.4A CN117157475A (zh) | 2021-03-31 | 2022-03-23 | 多列滚珠丝杠 |
EP22780437.4A EP4317742A1 (en) | 2021-03-31 | 2022-03-23 | Multi-row ball screw |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-062357 | 2021-03-31 | ||
JP2021062357 | 2021-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022210223A1 true WO2022210223A1 (ja) | 2022-10-06 |
Family
ID=83458723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/013763 WO2022210223A1 (ja) | 2021-03-31 | 2022-03-23 | 多条ボールねじ |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240191789A1 (ja) |
EP (1) | EP4317742A1 (ja) |
JP (1) | JPWO2022210223A1 (ja) |
CN (1) | CN117157475A (ja) |
TW (1) | TW202242280A (ja) |
WO (1) | WO2022210223A1 (ja) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4993767A (ja) * | 1972-10-20 | 1974-09-06 | ||
JPS56120851A (en) * | 1980-02-29 | 1981-09-22 | Hiroshi Teramachi | Ball screw with retainer |
JPS56147955A (en) * | 1980-04-17 | 1981-11-17 | Hiroshi Teramachi | Ball screw with holder |
JPS56147954A (en) * | 1980-04-17 | 1981-11-17 | Hiroshi Teramachi | Retainerless ball screw |
CN100398872C (zh) * | 2004-08-20 | 2008-07-02 | 上银科技股份有限公司 | 滚动螺杆 |
US20110239799A1 (en) * | 2010-03-30 | 2011-10-06 | Bir Inder Singh | Linear motion assembly with recirculation insert |
JP2021062357A (ja) | 2019-10-11 | 2021-04-22 | 株式会社industria | 微細物除去システム及び微細物除去装置 |
-
2022
- 2022-03-23 JP JP2023511096A patent/JPWO2022210223A1/ja active Pending
- 2022-03-23 US US18/285,049 patent/US20240191789A1/en active Pending
- 2022-03-23 EP EP22780437.4A patent/EP4317742A1/en active Pending
- 2022-03-23 CN CN202280026372.4A patent/CN117157475A/zh active Pending
- 2022-03-23 WO PCT/JP2022/013763 patent/WO2022210223A1/ja active Application Filing
- 2022-03-31 TW TW111112502A patent/TW202242280A/zh unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4993767A (ja) * | 1972-10-20 | 1974-09-06 | ||
JPS56120851A (en) * | 1980-02-29 | 1981-09-22 | Hiroshi Teramachi | Ball screw with retainer |
JPS56147955A (en) * | 1980-04-17 | 1981-11-17 | Hiroshi Teramachi | Ball screw with holder |
JPS56147954A (en) * | 1980-04-17 | 1981-11-17 | Hiroshi Teramachi | Retainerless ball screw |
CN100398872C (zh) * | 2004-08-20 | 2008-07-02 | 上银科技股份有限公司 | 滚动螺杆 |
US20110239799A1 (en) * | 2010-03-30 | 2011-10-06 | Bir Inder Singh | Linear motion assembly with recirculation insert |
JP2021062357A (ja) | 2019-10-11 | 2021-04-22 | 株式会社industria | 微細物除去システム及び微細物除去装置 |
Also Published As
Publication number | Publication date |
---|---|
US20240191789A1 (en) | 2024-06-13 |
TW202242280A (zh) | 2022-11-01 |
JPWO2022210223A1 (ja) | 2022-10-06 |
EP4317742A1 (en) | 2024-02-07 |
CN117157475A (zh) | 2023-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4230020B2 (ja) | ボールねじナット、該ボールねじナットを使用した直線案内装置及びステアリング用ボールねじ並びにボールねじナットの製造方法 | |
US20100242651A1 (en) | Rolling-element screw device | |
JP6669275B2 (ja) | ボールねじ装置 | |
WO2007046321A1 (ja) | ボールねじ装置 | |
US20120192663A1 (en) | Ball screw assembly with enhanced radial load capacity and method of construction thereof | |
TWI435986B (zh) | 滾子螺桿及滾子螺桿之滾子循環方法 | |
JP2005299754A (ja) | ねじ装置及びその製造方法 | |
WO2022210223A1 (ja) | 多条ボールねじ | |
JP4288903B2 (ja) | ボールねじ装置 | |
JP2008202672A (ja) | ボールねじ及びその製造方法 | |
JP5178889B2 (ja) | ボールねじ | |
JP2001141019A (ja) | ボールねじ装置 | |
US6450055B1 (en) | Ball screw apparatus | |
JP2015024471A (ja) | ボールねじ用ナットの加工工具及び加工方法 | |
KR101297882B1 (ko) | 롤러 나사 및 롤러 나사의 롤러의 순환 방법 | |
US20060191367A1 (en) | Rolling screw device | |
JP2008238384A (ja) | ボールねじおよびそのねじ溝加工方法 | |
TWI670429B (zh) | 滾珠螺桿 | |
EP3295058B1 (en) | Linear drive mechanism of the screw and nut type with perfect rolling contact | |
JP7472633B2 (ja) | 被加工物の支持装置 | |
JP2019105296A (ja) | ボールねじ装置の調整方法及び製造方法 | |
KR102235466B1 (ko) | 스프링이 삽입된 볼 너트 접촉 곡면의 래핑장치 및 이 래핑장치를 이용한 래핑방법 | |
JPH05126226A (ja) | 直線送り装置 | |
JP3997743B2 (ja) | ボールねじ装置 | |
KR950011320B1 (ko) | 헤링 본 그루우브드 저널 베어링의 그루우브 가공장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22780437 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023511096 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022780437 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2022780437 Country of ref document: EP Effective date: 20231031 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |