TWI572799B - Ball screw device and manufacturing method thereof - Google Patents
Ball screw device and manufacturing method thereof Download PDFInfo
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- TWI572799B TWI572799B TW104113896A TW104113896A TWI572799B TW I572799 B TWI572799 B TW I572799B TW 104113896 A TW104113896 A TW 104113896A TW 104113896 A TW104113896 A TW 104113896A TW I572799 B TWI572799 B TW I572799B
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Classifications
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/063—Fixing them on the shaft
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
- F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
- F16C19/542—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Mounting Of Bearings Or Others (AREA)
- Rolling Contact Bearings (AREA)
Description
本發明是關於滾珠螺桿裝置，尤其是有關使用於單軸致動器等的各種工作機械，具備滾珠螺桿與支撐其螺桿軸的軸承的滾珠螺桿裝置及其製造方法。 The present invention relates to a ball screw device, and more particularly to a ball screw device including a ball screw and a bearing for supporting a screw shaft thereof, and a method of manufacturing the same, relating to various working machines used for a single-axis actuator or the like.
自以往，使用於單軸致動器等的各種工作機械，具備滾珠螺桿與支撐其螺桿軸的兩端部或一方端部的軸承的滾珠螺桿裝置已為人知(專利文獻1)。以上的滾珠螺桿裝置一般是使螺桿軸的外圍面縮徑形成軸承設置部以嵌合於上述軸承內圈的周圍面，在該軸承設置部的端面與上述軸承之間插入間隔件，並以鎖緊螺帽鎖緊。 Conventionally, a ball screw device including a ball screw and a bearing that supports both end portions or one end portion of the screw shaft has been known for use in various working machines such as a single-axis actuator (Patent Document 1). In the above ball screw device, generally, the outer peripheral surface of the screw shaft is reduced in diameter to form a bearing installation portion to be fitted to the peripheral surface of the bearing inner ring, and a spacer is inserted between the end surface of the bearing installation portion and the bearing, and the lock is inserted The tightening nut is locked.
[專利文獻1]日本特開2007-178002號公報 [Patent Document 1] Japanese Patent Laid-Open Publication No. 2007-178002
在此，滾珠螺桿裝置的螺桿軸的形態有將形成在其表面的螺旋槽形成或不形成至軸承設置部的端面為止的形態。 Here, the form of the screw shaft of the ball screw device has a form in which a spiral groove formed on the surface thereof is formed or not formed to the end surface of the bearing installation portion.
如第4(a)圖表示，螺旋槽101未形成至軸承設置部102的端面102a為止的螺桿軸100是如第4(b)圖表示，端面102a的形狀是成為勻整的圓環形狀。因此，如第4(c)圖表示，藉設置在鎖緊螺帽120與軸承110的內圈111之間的間隔件130與端面102a夾持著軸承110的內圈111，可限制軸承110的軸向的移動。 As shown in Fig. 4(a), the screw shaft 100 in which the spiral groove 101 is not formed to the end surface 102a of the bearing installation portion 102 is as shown in Fig. 4(b), and the shape of the end surface 102a is a uniform annular shape. Therefore, as shown in FIG. 4(c), the inner ring 111 of the bearing 110 is held by the spacer 130 and the end surface 102a disposed between the lock nut 120 and the inner ring 111 of the bearing 110, and the bearing 110 can be restrained. Axial movement.
另一方面，如第5(a)圖表示，螺旋槽201形成至軸承設置部202的端面202a為止的螺桿軸200是如第5(b)圖表示，端面202a的形狀是成為不勻整的圓環形狀。該形狀在螺旋槽201的導前角小的場合顯著，會有螺旋槽201的底部201a露出部份的產生。如以上形態的螺桿軸200是如第5(c)圖表示，藉設置在鎖緊螺帽220與軸承210的內圈211之間的間隔件230與設置在端面202a與軸承210的內圈211之間的間隔件240來限制夾持著內圈211的軸承210的軸向的移動。 On the other hand, as shown in Fig. 5(a), the screw shaft 200 formed so that the spiral groove 201 is formed to the end surface 202a of the bearing installation portion 202 is as shown in Fig. 5(b), and the shape of the end surface 202a is a circle which is uneven. Ring shape. This shape is remarkable in the case where the leading angle of the spiral groove 201 is small, and the exposed portion of the bottom portion 201a of the spiral groove 201 is generated. The screw shaft 200 as in the above embodiment is as shown in Fig. 5(c), by a spacer 230 disposed between the lock nut 220 and the inner ring 211 of the bearing 210, and an inner ring 211 provided at the end surface 202a and the bearing 210. A spacer 240 is interposed to limit the axial movement of the bearing 210 holding the inner ring 211.
如上述，軸承210的內圈211或抵接於間隔件240的螺桿軸200的端面202a的徑向尺寸不均勻而成為不勻整的圓環形狀時，過大負載作用於螺桿軸200時使得螺桿軸200的端部變得容易振動。 As described above, when the inner ring 211 of the bearing 210 or the end surface 202a of the screw shaft 200 abutting against the spacer 240 has a non-uniform radial dimension and becomes an uneven annular shape, an excessive load acts on the screw shaft 200 to cause the screw shaft. The end of the 200 becomes easy to vibrate.
這會導致螺桿軸200的變形、偏心或跨乘，其結果，藉鎖緊螺帽220的鎖緊會導致螺桿軸200端部的彎曲，或相對於螺桿軸200的端部之滑輪與聯軸節設置的困難，而有研討的必要。 This can result in deformation, eccentricity or spanning of the screw shaft 200, as a result of which locking by the locking nut 220 can result in bending of the end of the screw shaft 200, or pulley and coupling relative to the end of the screw shaft 200. Difficulties in setting up, but there is a need for discussion.
本發明是著眼於上述課題所研創而成，提供一種即使過大的負載作用於螺桿軸時仍可降低螺桿軸的端部振動的滾珠螺桿裝置及其製造方法為課題。 The present invention has been made in view of the above problems, and provides a ball screw device and a method of manufacturing the same that can reduce the vibration of the end portion of the screw shaft even when an excessive load acts on the screw shaft.
解決上述課題用的滾珠螺桿裝置的製造方法之一樣態，包括：膨脹步驟，係將在表面形成有螺旋槽的螺旋槽形成部及嵌合於具有軸承所支撐的軸承設置部之螺桿軸的上述螺旋槽形成部的軸向的端面與上述軸承的內圈之間的間隔件加熱處理，使其內徑尺寸從小於上述軸承設置部的外徑的尺寸擴徑至大於上述軸承設置部的外徑的尺寸，及設置步驟，係將上述螺桿軸插穿於藉上述膨脹步驟所擴徑的上述間隔件，並藉上述間隔件的冷卻將其間隔件的內周圍面嵌合設置於上述軸承設置部的外圍面。 In the same manner as the method of manufacturing the ball screw device for solving the above problems, the expansion step includes the spiral groove forming portion in which the spiral groove is formed on the surface, and the screw shaft that is fitted to the bearing shaft portion having the bearing support portion supported by the bearing. a spacer between the axial end surface of the spiral groove forming portion and the inner ring of the bearing is heat-treated to expand the inner diameter dimension from a size smaller than an outer diameter of the bearing installation portion to be larger than an outer diameter of the bearing installation portion. The size and the setting step of inserting the screw shaft into the spacer expanded by the expansion step, and fitting the inner peripheral surface of the spacer to the bearing setting portion by cooling the spacer The outer surface.
又，解決上述課題用的滾珠螺桿裝置之一樣態，具有：螺桿軸，具備在表面形成有螺旋槽的螺旋槽形成部及藉軸承支撐的軸承設置部；軸承，支撐上述軸承設置部；及間隔件，嵌合於上述螺旋槽形成部的軸向端面與上述 軸承的內圈之間，上述間隔件是藉加熱處理，使其內徑尺寸從小於上述軸承設置部的外徑尺寸的尺寸擴徑至大於上述軸承設置部的外徑尺寸的尺寸之後，插穿上述螺桿軸，並藉上述間隔件的冷卻將其間隔件的內周圍面嵌合設置於上述軸承設置部的外圍面。 Further, in the same manner as the ball screw device for solving the above problems, the screw shaft includes a spiral groove forming portion in which a spiral groove is formed on the surface, and a bearing installation portion supported by a bearing; a bearing supports the bearing installation portion; and an interval And an axial end surface fitted to the spiral groove forming portion and the above Between the inner rings of the bearing, the spacer is heat-treated, and the inner diameter dimension is expanded from a size smaller than the outer diameter dimension of the bearing installation portion to a size larger than the outer diameter dimension of the bearing installation portion, and then inserted. The screw shaft is fitted to the outer peripheral surface of the bearing installation portion by the cooling of the spacer.
根據本發明之一樣態，可提供即使過大的負載作用於螺桿軸時仍可降低螺桿軸的端部振動的滾珠螺桿裝置及其製造方法。 According to the state of the present invention, it is possible to provide a ball screw device which can reduce the end vibration of the screw shaft even when an excessive load acts on the screw shaft, and a method of manufacturing the same.
1‧‧‧滾珠螺桿裝置 1‧‧‧Ball screw device
10‧‧‧螺桿軸 10‧‧‧ Screw shaft
10a‧‧‧軸承設置部 10a‧‧‧ Bearing Setting Department
10b‧‧‧螺旋槽形成部 10b‧‧‧Spiral groove formation
11‧‧‧螺旋槽 11‧‧‧Spiral groove
13a‧‧‧端面 13a‧‧‧ end face
20‧‧‧軸承 20‧‧‧ bearing
21‧‧‧內圈 21‧‧‧ inner circle
60‧‧‧間隔件 60‧‧‧ spacers
第1圖表示滾珠螺桿裝置之一實施形態的構成的圖。 Fig. 1 is a view showing a configuration of an embodiment of a ball screw device.
第2圖表示滾珠螺桿裝置的製造方法之一實施形態的流程。 Fig. 2 is a flow chart showing an embodiment of a method of manufacturing a ball screw device.
第3圖表示滾珠螺桿裝置的製造方法之一實施形態的間隔件的設置步驟的圖。 Fig. 3 is a view showing a step of installing a spacer in an embodiment of a method of manufacturing a ball screw device.
第4圖表示習知的滾珠螺桿裝置的構成的圖，(a)為螺桿軸的右側剖視圖，(b)為螺桿軸的前視圖，(c)是沿著滾珠螺桿裝置的軸向的剖視圖。 Fig. 4 is a view showing a configuration of a conventional ball screw device, wherein (a) is a right side sectional view of the screw shaft, (b) is a front view of the screw shaft, and (c) is a cross-sectional view taken along the axial direction of the ball screw device.
第5圖表示習知的滾珠螺桿裝置的構成的圖，(a)為螺桿軸的右側剖視圖，(b)為螺桿軸的前視圖，(c) 是沿著滾珠螺桿裝置的軸向的剖視圖。 Fig. 5 is a view showing the configuration of a conventional ball screw device, (a) is a right side sectional view of the screw shaft, (b) is a front view of the screw shaft, (c) It is a cross-sectional view along the axial direction of the ball screw device.
以下的詳細說明是記載多數的特定的細部以提供本發明之實施形態的完全性理解。但是，即使沒有上述特定的細部仍可實施一個以上的實施樣態。除此之外，為使圖示簡潔而以略圖表示習知的構造及裝置。 The detailed description below is intended to provide a thorough understanding of the embodiments of the invention. However, more than one implementation can be implemented without the specific details described above. In addition, the conventional structures and devices are shown in schematic form in order to simplify the illustration.
以下，參閱圖是說明滾珠螺桿裝置及其製造方法的實施形態。 Hereinafter, an embodiment of a ball screw device and a method of manufacturing the same will be described with reference to the drawings.
第1圖是表示滾珠螺桿裝置之一實施形態的構成的圖，(a)為螺桿軸的右側剖視圖，(b)是在螺桿軸設置間隔件的剖視圖，(c)是沿著滾珠螺桿裝置的軸向的剖視圖。又，第2圖是表示滾珠螺桿裝置的製造方法之一實施形態的流程。並且，第3圖是表示滾珠螺桿裝置的製造方法之一實施形態的間隔件的設置步驟的圖。 Fig. 1 is a view showing a configuration of an embodiment of a ball screw device, wherein (a) is a right side sectional view of the screw shaft, (b) is a cross-sectional view in which a spacer is provided on a screw shaft, and (c) is a ball screw device. Axial cross-sectional view. Moreover, Fig. 2 is a flow chart showing an embodiment of a method of manufacturing a ball screw device. Further, Fig. 3 is a view showing a step of installing a spacer in an embodiment of a method of manufacturing a ball screw device.
如第1(c)圖表示，滾珠螺桿裝置1具有：螺桿軸10，及支撐該螺桿軸10的端部的複數列的滾動軸承20、20。螺桿軸10是在軸向構成為軸承設置部10a與螺旋槽形成部10b。在螺桿軸10的螺旋槽形成部10b的表面形成有螺旋槽11。滾動軸承20具有嵌合於形成在螺桿軸10端部的軸承設置部10a而與螺桿軸10一體旋轉的兩個內圈21、21。在該等內圈21、21的外圍分別設有透過複數個滾動體22自由旋轉地支撐內圈21的外圈23。 As shown in Fig. 1(c), the ball screw device 1 has a screw shaft 10 and a plurality of rolling bearings 20 and 20 that support the ends of the screw shaft 10. The screw shaft 10 is configured as a bearing installation portion 10a and a spiral groove forming portion 10b in the axial direction. A spiral groove 11 is formed on the surface of the spiral groove forming portion 10b of the screw shaft 10. The rolling bearing 20 has two inner rings 21, 21 that are fitted to the bearing installation portion 10a formed at the end of the screw shaft 10 and rotate integrally with the screw shaft 10. An outer ring 23 that rotatably supports the inner ring 21 through a plurality of rolling elements 22 is provided on the outer periphery of the inner rings 21, 21, respectively.
並且，滾珠螺桿裝置1具備收容滾動軸承20 的圓筒形的外殼30，滾動軸承20的外圍面(外圈23的外圍面)是與外殼30的內周圍面自由滑動地嵌合。 Further, the ball screw device 1 is provided with a housing rolling bearing 20 The cylindrical outer casing 30, the outer peripheral surface of the rolling bearing 20 (the outer peripheral surface of the outer ring 23) is slidably fitted to the inner peripheral surface of the outer casing 30.
滾動軸承20的內圈21是藉形成在螺桿軸10的段差部12與鎖緊螺帽40定位在預定位置。該鎖緊螺帽40是螺嵌於螺桿軸10的端部，在鎖緊螺帽40與內圈21之間的螺桿軸10的外圍設有間隔件41。該間隔件41是例如盤簧或螺旋彈簧或縱彈性係數的金屬等構成。 The inner ring 21 of the rolling bearing 20 is positioned at a predetermined position by the step portion 12 formed on the screw shaft 10 and the lock nut 40. The lock nut 40 is screwed to the end of the screw shaft 10, and a spacer 41 is provided on the periphery of the screw shaft 10 between the lock nut 40 and the inner ring 21. The spacer 41 is made of, for example, a coil spring or a coil spring or a metal having a longitudinal elastic modulus.
在此，在螺桿軸10的軸承設置部10a，如第1(a)圖表示嵌合設有圓環形的間隔件60。該間隔件60一方的端面60a是抵接於端面13a。端面13a是位在軸承設置部10a與螺旋槽形成部10b的邊界，與連結軸承設置部10a的外圍面及螺旋槽形成部10b之外圍面的軸向面對的面。又，間隔件60另一方的端面60c是與軸承20的內圈21抵接。亦即，該間隔件60是將其內周圍面60b嵌合設置在端面50b與內圈21之間的螺桿軸10的外圍面。 Here, in the bearing installation portion 10a of the screw shaft 10, as shown in Fig. 1(a), a spacer 60 having a circular ring shape is fitted. One end surface 60a of the spacer 60 abuts against the end surface 13a. The end surface 13a is a surface that is located at a boundary between the bearing installation portion 10a and the spiral groove forming portion 10b and that faces the outer peripheral surface of the bearing installation portion 10a and the outer peripheral surface of the spiral groove forming portion 10b. Further, the other end surface 60c of the spacer 60 is in contact with the inner ring 21 of the bearing 20. That is, the spacer 60 is a peripheral surface of the screw shaft 10 in which the inner peripheral surface 60b is fitted between the end surface 50b and the inner ring 21.
並且，滾動軸承20的內圈21是藉鎖緊螺帽40的鎖緊力被推壓於端面13a。該間隔件60是例如盤簧或螺旋彈簧或縱彈性係數的金屬等構成。 Further, the inner ring 21 of the rolling bearing 20 is urged against the end surface 13a by the locking force of the lock nut 40. The spacer 60 is made of, for example, a coil spring or a coil spring or a metal having a longitudinal elastic modulus.
接著，針對如以上所構成的滾珠螺桿裝置的製造方法說明。如第2圖表示，本實施形態的滾珠螺桿的製造方法是包含「膨脹步驟」與「設置步驟」。 Next, a method of manufacturing the ball screw device configured as described above will be described. As shown in Fig. 2, the method of manufacturing the ball screw of the present embodiment includes an "expansion step" and a "setting step".
膨脹步驟是將間隔件60加熱處理，將其內徑尺寸從 小於軸承設置部10a的外徑尺寸的尺寸擴徑至大於軸承設置部10a的外徑尺寸的尺寸的步驟。在此，加熱處理後的間隔件60的內徑尺寸是如後述，在設置於螺桿軸10時，間隔件60的端面60a抵接於端面13a較為容易定位，因此以膨脹使其比凸部11a(參閱第1(a)圖)的外徑尺寸小為佳。 The expansion step is to heat the spacer 60 to have an inner diameter dimension from The dimension smaller than the outer diameter dimension of the bearing installation portion 10a is expanded to a size larger than the outer diameter dimension of the bearing installation portion 10a. Here, the inner diameter of the spacer 60 after the heat treatment is as described later. When the screw shaft 10 is provided, the end surface 60a of the spacer 60 is easily positioned to abut against the end surface 13a, so that it is expanded to be larger than the convex portion 11a. (Refer to Figure 1(a)) The outer diameter is preferably small.
設置步驟是藉上述膨脹步驟將螺桿軸10插穿於內徑尺寸擴徑後的間隔件60，並藉著間隔件60的冷卻，將間隔件60的內周圍面60b嵌合設置於軸承設置部10a的外圍面的步驟。 The installation step is to insert the screw shaft 10 into the spacer 60 whose inner diameter is expanded by the expansion step, and to fix the inner peripheral surface 60b of the spacer 60 to the bearing setting portion by the cooling of the spacer 60. The step of the peripheral surface of 10a.
將間隔件60設置在螺桿軸10時，嵌合於螺旋槽形成部10b的軸向的端面13a與軸承的內圈21、21之間。 When the spacer 60 is placed on the screw shaft 10, it is fitted between the axial end surface 13a of the spiral groove forming portion 10b and the inner rings 21, 21 of the bearing.
具體而言，如第3(a)圖表示，相對於具有軸承設置部10a及螺旋槽形成部10b的螺桿軸10，如第3(b)圖表示，藉上述膨脹步驟將內徑尺寸擴徑後的間隔件60插穿於螺桿軸10。 Specifically, as shown in Fig. 3(a), with respect to the screw shaft 10 having the bearing installation portion 10a and the spiral groove forming portion 10b, as shown in Fig. 3(b), the inner diameter is expanded by the expansion step. The rear spacer 60 is inserted through the screw shaft 10.
接著，如第3(c)圖表示，將間隔件60插穿於螺桿軸10至間隔件60的端面60a抵接於端面13a為止之後，使間隔件60冷卻。該冷卻可以是持續冷卻或以冷卻機器急速冷卻。冷卻間隔件60使間隔件60的內徑尺寸變小，使間隔件60成為壓入於軸承設置部10a的樣態。 Next, as shown in Fig. 3(c), after the spacer 60 is inserted through the screw shaft 10 until the end surface 60a of the spacer 60 abuts against the end surface 13a, the spacer 60 is cooled. This cooling can be continuous cooling or rapid cooling with a cooling machine. The cooling spacer 60 reduces the inner diameter of the spacer 60, and causes the spacer 60 to be pressed into the bearing installation portion 10a.
如上述，將間隔件60燒嵌於軸承20的內圈21與端 面13a之間，並藉內圈21、21與端面13a固定間隔件60，因此可對螺桿軸10牢固地固定間隔件60。其結果，限制軸承20的軸向移動，可減輕螺桿軸10之端部的振動。 As described above, the spacer 60 is fired in the inner ring 21 and the end of the bearing 20. Between the faces 13a, the spacers 60 are fixed by the inner rings 21, 21 and the end faces 13a, so that the spacers 60 can be firmly fixed to the screw shaft 10. As a result, the axial movement of the bearing 20 is restricted, and the vibration of the end portion of the screw shaft 10 can be reduced.
並且，如以上所構成的螺桿軸10除滾珠螺桿裝置以外可使用於梯形螺紋等。 Further, the screw shaft 10 configured as described above can be used for a trapezoidal thread or the like in addition to the ball screw device.
以上，參閱特定的實施形態已說明本發明，但並未以該等說明來限制發明的意圖。藉由參閱本發明的說明，該業界可得以明確所記載的實施形態的種種變形例與本發明的其他實施形態。因此，申請專利範圍可解釋為同時網羅包含於本發明的範圍及主旨的該等變形例及實施形態。例如，在上述「設置步驟」前，也可以使軸承的內圈呈高溫膨脹(燒嵌)，插入螺桿軸。在此，軸承設置部與螺旋槽形成部的邊界的端面為輕接觸可辨識位置即可，軸承的內圈回到常溫時具有與壓入相同的效果。 The invention has been described above with reference to specific embodiments, but the invention is not intended to limit the invention. Various modifications of the described embodiments and other embodiments of the invention will be apparent to those skilled in the <RTIgt; Therefore, the scope of the invention is to be construed as being limited by the scope and the scope of the invention. For example, before the "setting step" described above, the inner ring of the bearing may be expanded (burned) at a high temperature and inserted into the screw shaft. Here, the end surface at the boundary between the bearing installation portion and the spiral groove forming portion may be in a light contact identifiable position, and the inner ring of the bearing has the same effect as the press-in when returning to the normal temperature.
1‧‧‧滾珠螺桿裝置 1‧‧‧Ball screw device
10‧‧‧螺桿軸 10‧‧‧ Screw shaft
10a‧‧‧軸承設置部 10a‧‧‧ Bearing Setting Department
10b‧‧‧螺旋槽形成部 10b‧‧‧Spiral groove formation
11‧‧‧螺旋槽 11‧‧‧Spiral groove
11a‧‧‧凸部 11a‧‧‧ convex
13a‧‧‧端面 13a‧‧‧ end face
20‧‧‧軸承 20‧‧‧ bearing
21‧‧‧內圈 21‧‧‧ inner circle
22‧‧‧滾動體 22‧‧‧ rolling elements
23‧‧‧外圈 23‧‧‧Outer ring
30‧‧‧外殼 30‧‧‧Shell
40‧‧‧鎖緊螺帽 40‧‧‧Lock nut
41‧‧‧間隔件 41‧‧‧ spacers
60‧‧‧間隔件 60‧‧‧ spacers
60a‧‧‧端面 60a‧‧‧ end face
60b‧‧‧端面 60b‧‧‧ end face
60c‧‧‧端面 60c‧‧‧ end face
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014097899A JP2015215035A (en) | 2014-05-09 | 2014-05-09 | Ball screw device and method of manufacturing the same |
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| Publication Number | Publication Date |
|---|---|
| TW201608151A TW201608151A (en) | 2016-03-01 |
| TWI572799B true TWI572799B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW104113896A TWI572799B (en) | 2014-05-09 | 2015-04-30 | Ball screw device and manufacturing method thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2015215035A (en) |
| TW (1) | TWI572799B (en) |
| WO (1) | WO2015170444A1 (en) |
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| CN105515260A (en) * | 2015-12-03 | 2016-04-20 | 内蒙古南车电机有限公司 | Generator set rotation shaft BT bearing installation device |
| CN110553021B (en) * | 2018-05-31 | 2022-02-08 | 高明铁企业股份有限公司 | Electric cylinder |
| CN113263749B (en) * | 2021-07-20 | 2021-09-28 | 南通纳科达聚氨酯科技有限公司 | TPU color-changing film production device and production method |
| CN114273879B (en) * | 2022-01-19 | 2022-11-18 | 浙江亚微精密机床有限公司 | Gap machining method of static pressure lead screw pair |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000283170A (en) * | 1999-03-31 | 2000-10-13 | Nisshin Steel Co Ltd | Fixing method for inner ring in rolling bearing |
| JP2003120786A (en) * | 2001-10-17 | 2003-04-23 | Nsk Ltd | Ball screw device, and roller bearing for ball screw |
| JP2007276022A (en) * | 2006-04-04 | 2007-10-25 | Nsk Ltd | Rotary shaft support device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002139118A (en) * | 2000-11-06 | 2002-05-17 | Nissan Motor Co Ltd | Rolling element for traction drive and manufacturing method for the same |
| JP2003240006A (en) * | 2002-02-20 | 2003-08-27 | Toshiba Mach Co Ltd | Main shaft support structure |
| JP5061568B2 (en) * | 2006-10-06 | 2012-10-31 | 日本精工株式会社 | Ball screw device |
| JP5074443B2 (en) * | 2009-03-30 | 2012-11-14 | 住友重機械工業株式会社 | Reducer with output pinion for wind power generation system |
| JP5712839B2 (en) * | 2011-02-24 | 2015-05-07 | 日本精工株式会社 | Motor built-in spindle device |
-
2014
- 2014-05-09 JP JP2014097899A patent/JP2015215035A/en active Pending
-
2015
- 2015-04-09 WO PCT/JP2015/002012 patent/WO2015170444A1/en active Application Filing
- 2015-04-30 TW TW104113896A patent/TWI572799B/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000283170A (en) * | 1999-03-31 | 2000-10-13 | Nisshin Steel Co Ltd | Fixing method for inner ring in rolling bearing |
| JP2003120786A (en) * | 2001-10-17 | 2003-04-23 | Nsk Ltd | Ball screw device, and roller bearing for ball screw |
| JP2007276022A (en) * | 2006-04-04 | 2007-10-25 | Nsk Ltd | Rotary shaft support device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015170444A1 (en) | 2015-11-12 |
| TW201608151A (en) | 2016-03-01 |
| JP2015215035A (en) | 2015-12-03 |
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