WO2011077831A1 - 円すいころ軸受の保持器セグメント、円すいころ軸受及び円すいころ軸受の組み込み方法 - Google Patents
円すいころ軸受の保持器セグメント、円すいころ軸受及び円すいころ軸受の組み込み方法 Download PDFInfo
- Publication number
- WO2011077831A1 WO2011077831A1 PCT/JP2010/069046 JP2010069046W WO2011077831A1 WO 2011077831 A1 WO2011077831 A1 WO 2011077831A1 JP 2010069046 W JP2010069046 W JP 2010069046W WO 2011077831 A1 WO2011077831 A1 WO 2011077831A1
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- WIPO (PCT)
- Prior art keywords
- diameter
- tapered roller
- roller bearing
- small
- segment
- Prior art date
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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
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
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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
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4605—Details of interaction of cage and race, e.g. retention or centring
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4611—Cages for rollers or needles with hybrid structure, i.e. with parts made of distinct materials
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/50—Cages for rollers or needles formed of interconnected members, e.g. chains
- F16C33/502—Cages for rollers or needles formed of interconnected members, e.g. chains formed of arcuate segments retaining one or more rollers or needles
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/51—Cages for rollers or needles formed of unconnected members
- F16C33/513—Cages for rollers or needles formed of unconnected members formed of arcuate segments for carrying one or more rollers
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
- F16C33/605—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings with a separate retaining member, e.g. flange, shoulder, guide ring, secured to a race ring, adjacent to the race surface, so as to abut the end of the rolling elements, e.g. rollers, or the cage
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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
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/04—Preventing damage to bearings during storage or transport thereof or when otherwise out of use
- F16C41/045—Devices for provisionally retaining needles or rollers in a bearing race before mounting of the bearing on a 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
- F16C2220/00—Shaping
- F16C2220/02—Shaping by casting
- F16C2220/04—Shaping by casting by injection-moulding
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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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/10—Application independent of particular apparatuses related to size
- F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49636—Process for making bearing or component thereof
- Y10T29/49643—Rotary bearing
Definitions
- the present invention relates to a cage segment (hereinafter simply referred to as a “segment”) that constitutes a split cage of a tapered roller bearing, a tapered roller bearing using the segment, and a segment when the tapered roller bearing is incorporated into an apparatus.
- the present invention relates to an assembling method which prevents dispersion falling, so-called “separation”.
- a split type cage In a tapered roller bearing, in order to improve its assemblability, a split type cage has been conventionally used as a tapered roller cage (Patent Document 1).
- the segment constituting the split cage has a substantially quadrangular frame shape obtained by equally dividing a truncated cone-shaped cage cage by a split plane passing through the center line thereof.
- a plurality of column portions are arranged in parallel between the small-diameter side frame side and the large-diameter side frame side opposite to the small-diameter side frame side, and a pocket for storing and holding the tapered roller is formed between the column portions.
- the inner ring is first fitted and fixed around the shaft, and then a plurality of segments with tapered rollers are arranged around the inner ring raceway.
- the outer ring is fitted around the tapered roller, and the housing of the device is fitted to the outer diameter surface of the outer ring to complete the assembly of the bearing.
- the present invention provides a segment in which a means for preventing a breakage at the time of incorporation of the tapered roller bearing, a tapered roller bearing using a split type cage constituted by the segment, and a tapered roller bearing in which the cage is prevented from being loosened. It is an object to provide a method for embedding.
- the cage is guided by a tapered roller, so-called roller guidance.
- the segment passes the bottom dead center of the rotation of the bearing (bottom dead center when the rotation is viewed as a reciprocating motion in the vertical direction; the same applies hereinafter), the segment moves away from the tapered roller and moves downward (outer ring raceway side). It may move and interfere with members on the outer ring side.
- Another object of the present invention is to prevent such interference and enable the cage to be stably guided over the entire circumference of rotation.
- the tapered roller bearing segment according to the present invention is formed by combining a conical cage-shaped cage equally divided by a dividing surface including the center line thereof and combining them in an annular shape.
- a required number of pillars are provided between the small-diameter side edge constituting the small-diameter side edge of the split-type cage and the large-diameter side edge constituting the large-diameter side edge of the split-type cage.
- a large-diameter side projecting axially outwardly from at least the large-diameter side edge of the small-diameter side edge and the large-diameter side edge
- the engagement piece is provided.
- a retaining protrusion that protrudes inward from the pocket is provided, and the amount of protrusion of the retaining protrusion is set to a size that allows forcible insertion (so-called “clicking”) of the tapered roller into the pocket while restricting withdrawal after the forced insertion.
- a large-diameter engaging member is fitted and fixed to a large-diameter mounting portion provided on the outer side in the axial direction of the large collar of the bearing inner ring. It is the structure formed in the reverse L-shaped cross-sectional shape from which a recessed part turns inward.
- the bearing inner ring is fitted and fixed around the shaft
- a large diameter engaging member is fitted and fixed to the large diameter mounting portion of the inner ring, and then the tapered roller is fitted.
- the cage segment with the large-diameter side engaging piece is engaged with the large-diameter mounting member to arrange the cage segment around the inner ring raceway, and after the arrangement is completed, the bearing is provided around the tapered roller. According to the procedure of fitting the outer ring.
- the tapered roller bearing using the segment and the method of assembling the tapered roller bearing, when assembling the tapered roller into the device, the required number of segments to which the tapered roller is attached are arranged around the inner ring raceway.
- the small-diameter engaging member is engaged with the small-diameter side engaging piece of the segment while the small-diameter engaging member is fitted and fixed to the small-diameter mounting portion. Discoloration can also be prevented.
- the segmentation of the segment is prevented when the tapered roller bearing is assembled, so that the assembling workability can be improved.
- the segment does not come off from the tapered rollers even at the bottom dead center of the rotation of the bearing. Rollers can be guided stably.
- FIG. 1 is a partially omitted cross-sectional view showing a tapered roller bearing of the first embodiment.
- FIG. 2 is a perspective view of the cage segment holding the tapered roller.
- 3 is an enlarged cross-sectional view taken along line X1-X1 of FIG.
- FIG. 4 is a partially omitted enlarged sectional view of a modified example of the mounting member.
- FIG. 5 is a cross-sectional view of a segment holding a tapered roller.
- FIG. 6 is a cross-sectional view of a segment holding the tapered roller of the second embodiment.
- FIG. 7A is a partially enlarged cross-sectional view of the above.
- FIG. 7B is a bottom view of FIG. 7A.
- FIG. 7C shows a cross-sectional view taken along line X2-X2 rotated 90 degrees.
- FIG. 8A is a partially omitted sectional view showing the tapered roller bearing of the above.
- FIG. 8B is an enlarged cross-sectional view taken along line X3-X3 of FIG. 8A.
- the tapered roller bearing 10 As shown in FIGS. 1 to 5, the tapered roller bearing 10 according to the first embodiment is opposed to the inner ring 11, the outer ring 12 arranged concentrically on the outer periphery thereof, and the inner ring raceway 13 of the inner ring 11.
- a tapered roller 15 interposed between the outer ring 12 and the outer ring raceway 14, and a division type retainer 16 that holds the tapered roller 15 at regular intervals.
- a small collar portion 17 is formed on the small diameter side of the inner ring raceway 13 and a large collar portion 18 is formed on the large diameter side, and the rolling of the tapered roller 15 is guided by both of the collar portions 17 and 18.
- a small-diameter mounting portion 19 and a large-diameter mounting portion 21 are formed on the outer sides in the axial direction of the small brim portion 17 and the large brim portion 18, respectively.
- the ring-shaped small-diameter engaging member 22 and the large-diameter engaging member 23 are fixed by being press-fitted from the axial direction to the outer diameter surfaces of the small-diameter mounting portion 19 and the large-diameter mounting portion 21, respectively.
- the cross-sectional shapes of these engaging members 22 and 23 are inverted L-shaped, and have protruding portions 24 in the radial direction.
- An engaging recess 26 is formed between the protruding portion 24 and the base 25 by providing a reinforcing base 25 protruding inward on the inner diameter side of the protruding portion 24.
- Each engaging member 22, 23 is press-fitted and fixed to the outer diameter surfaces of the small-diameter mounting portion 19 and the large-diameter mounting portion 21 so that the engaging recess 26 faces inward.
- the segment 27 constituting the split-type cage 16 has a frame shape obtained by equally dividing a conical trapezoidal cage-type cage by a split surface including its center line.
- a truncated cone-shaped cage-type cage 16 having a small diameter side edge 28 at one end in the axial direction and a large diameter side edge 29 at the other end is formed.
- the segment 27 is constituted by a combination of a resin segment main body 33 and a metal outer frame member 34 that surrounds and is integrated with the segment main body 33.
- the segment body 33 is provided with a plurality of column parts 31 (six, including the left and right ends in the figure) between long sides of a rectangular frame facing each other.
- a plurality of pockets 32 (five in the illustrated case) are formed between the pillars 31, and the tapered rollers 15 are stored and held in the pockets 32, respectively.
- the side of the segment main body 33 facing the small diameter end of the tapered roller 15 is called a small diameter side 33a, and the side facing the large diameter end is called a large diameter side 33b.
- Each column portion 31 is formed with an arcuate engagement claw 35 a divided into a Y shape at the upper end (see FIG. 3), and each engagement claw 35 a faces on both side pockets 32 and is stored in each pocket 32.
- the tapered roller 15 is held and is prevented from coming out to the outer ring 12 side.
- a single arc-shaped engagement claw 35a that is curved only on the inside is formed, thereby holding the tapered roller 15 on the inside, and similarly to the outer ring 12 side. Prevent slipping out.
- the outer frame member 34 includes a small-diameter side engaging piece 35 that faces the small-diameter side side 33a of the segment body 33, and a large-diameter side engaging piece 36 that also faces the large-diameter side side 33b.
- the left and right short sides 37 respectively corresponding to the column portions 31 at the left and right ends of the segment body 33 are formed in a rectangular frame shape.
- the segment body 33 is integrally formed by insert molding in a state in which the segment body 33 is fitted inside the outer frame member 34.
- the small-diameter side engagement piece 35 and the large-diameter side engagement piece 36 protrude to the both sides in the axial direction of the segment 27, respectively, and both are bent so that the tip ends thereof are parallel to the axis (see FIG. 1).
- the bent tip portions are respectively inserted into the engagement recesses 26 of the small diameter engagement member 22 and the large diameter engagement member 23.
- the small-diameter engaging member 22 and the large-diameter engaging member 23 function to prevent the segment 27 from being loosened when the tapered roller bearing 10 is incorporated into the apparatus, as will be described later. These may be removed.
- the segment 27 may be formed by injection molding the entire segment body 33 and the outer frame member 34 with a synthetic resin.
- a half ring type as shown in FIG. 4 can be used as another example of the small-diameter engaging member 22 and the large-diameter engaging member 23 .
- a connecting collar portion 38a protruding in the outer diameter direction is provided at both end portions of the semicircular engaging member half body 38.
- a right screw hole 39a and a left screw hole 39b are provided on the same axis of the butted end surface of each connecting collar 38a.
- the connecting member 40 for connecting the two engaging member halves 38 in a ring shape has a right screw shaft 41a at one end and a left screw shaft 41b at the other end, and the intermediate shaft portion 41c is polygonal. It is formed.
- both connecting collar portions 38a are indicated by arrows.
- the small-diameter engaging member 22 and the large-diameter engaging member 23 are formed by moving in a direction approaching each other and connected in a ring shape. These are fastened and fixed around the small-diameter mounting portion 19 and the large-diameter mounting portion 21 of the inner ring 11, respectively.
- the small diameter engaging member 22 and the large diameter engaging member 23 may be removed after being incorporated into the apparatus, as in the case described above.
- the tapered roller bearing 10 is as described above.
- the large-diameter engagement member 23 is fitted and fixed in advance around the large-diameter mounting portion 21 of the inner ring 11. deep.
- the apparatus is installed so that the shaft is vertically oriented and the large-diameter engaging member 23 is in the lower position, and the required number of segments 27 to which the tapered rollers 15 are attached are arranged around the inner ring raceway 13 in an annular shape.
- the large-diameter side engagement piece 36 of the segment 27 is engaged with the engagement recess 26 of the large-diameter engagement member 23 to prevent the segment 27 and the tapered roller 15 from being separated on the large-diameter side.
- the small-diameter engaging member 22 is fitted and fixed to the small-diameter mounting portion 19 and the small-diameter side engaging piece 35 is engaged with the engaging concave portion 26, thereby Also prevent the looseness.
- the outer ring 12 is fitted around the tapered roller 15 as usual, and the housing is fitted to the outer ring 12 to complete the incorporation of the tapered roller bearing 10.
- the small-diameter coupling member 22 and the large-diameter coupling member 23 do not have a special function after the completion of the assembly, they may be separated and removed from the tapered roller bearing 10.
- tapered rollers 15 are prevented from slipping out of the pocket 32 outward (in the direction of the outer ring 12) by the respective engaging claws 35a.
- the small-diameter side engagement piece 35 is provided on the small-diameter end side 28 of the segment 27, and the small-diameter engagement member 22 is fitted and fixed to the small-diameter mounting portion 19 of the bearing inner ring 11 correspondingly. It is configured. However, when the bearing is assembled, the segment 27 is inclined inward along the conical inner ring raceway 13 with the large-diameter side engagement piece 36 engaged with the large-diameter engagement member 23. Once in a stable state. For this reason, it is not always necessary to restrain the small diameter end side 28 side of the segment 27.
- the step of fitting and fixing the small-diameter engaging member 22 to the small-diameter mounting portion 19 and engaging the small-diameter side engaging piece 35 with the engaging concave portion 26 at the time of incorporation is omitted, and the arrangement of the segments 27 is performed. Thereafter, the process may be immediately shifted to the step of fitting the outer ring 12 around the tapered roller 15.
- the tapered roller bearing 10 according to the first embodiment described above has an effect of preventing the segment 27 from being loosened when the segment 27 holding the tapered roller is assembled around the inner ring raceway.
- the guide of the split type retainer 16 formed by combining the segments 27 in a ring shape becomes the roller guide as described above.
- the rotating shaft on which the tapered roller bearing 10 is mounted is used as a horizontal axis (horizontal axis)
- the segment 27 passes through the bottom dead center of rotation, as indicated by the white arrow in FIG.
- a phenomenon occurs in which the segment 27 is detached from the tapered roller 15 and moves to the outer ring raceway surface 14 side (downward).
- segment 27 of the tapered roller bearing according to the second embodiment is configured so that stable roller guidance is possible over the entire circumference of the rotation, thereby preventing interference with other members as described above. It is a thing.
- the basic configuration of the segment 27 of the second embodiment is the same as that of the first embodiment.
- the difference is that in the column portions 31 at both left and right end portions, a retaining protrusion 42 is provided on the inner edge of the inner surface forming the pocket 32 of the column portion 31 (FIGS. 6 and 6). 7A, FIG. 7B, and FIG. 7C).
- the retaining protrusion 42 is provided at a position offset from the center O of the pocket 32 toward the small-diameter engaging piece 35 and is formed in a cross-sectional triangle having a surface common to the inner diameter-side surface of the column portion 31.
- the maximum protrusion amount of the retaining protrusion 42 to the inside of the pocket 32 is forced by a method in which the retaining protrusion 42 is elastically deformed by applying an impact that is more than a certain level to the tapered roller 15, that is, a so-called squeak. It is set to a size that can be inserted. By setting in this way, the tapered roller 15 can be forcibly inserted into the pocket 32 without using a special jig and without damaging the segment 27.
- the minimum value of the protruding amount is set to a size capable of restricting the tapered roller 15 from coming out of the pocket 32 due to the centrifugal force during the rotation of the bearing and the weight of the segment 27.
- the protrusion amount is set to 2 to 8% of the average diameter of the tapered rollers 15.
- the pocket 32 is formed such that the retaining protrusion 42 is offset toward the small-diameter side engaging piece 35 side, so that the large-diameter side engaging piece 36 side is relatively wide open (see FIG. 7C).
- the tapered roller 15 is inserted into the pocket 32, as shown in FIG. 7C, the small diameter end of the tapered roller 15 is widely opened from the inner diameter side surface of the segment 27 on the large diameter engagement piece 36 side. An impact is applied in a state where it is obliquely applied to the retaining protrusion 42 from the portion, and the retaining protrusion 42 is elastically deformed and forcedly inserted.
- the tapered roller 15 forcibly inserted into the pocket 32 is integrated with the segment 27 and is not separated.
- the engaging claw portions 35a are omitted from the column portions 31 at both the left and right end portions in consideration of die cutting during injection molding.
- FIG. 8A shows a tapered roller bearing 10 using a split cage 16 in which the segments 27 are combined.
- the basic configuration is the same as that of the first embodiment (see FIG. 1). The differences are as follows.
- the first point is the radial clearance S1 between the protrusion 24 constituting the engagement recess 26 in the small diameter side engagement member 22 and the small diameter side engagement piece 35, and the engagement recess 26 in the large diameter side engagement member 23.
- the radial clearance S1 between the projecting portion 24 and the large-diameter side engagement piece 36 is the radial clearance S2 between the tapered roller 15 of the pocket 32 and the arc portion 35a in the segment 27 (see FIG. 8B).
- the relationship is that S1> S2.
- the second point is that the axial clearance P1 between the inner side surface (the surface on the inner ring raceway 13 side) of the small-diameter side engaging member 22 and the small-diameter side engaging piece 35 of the segment 27 and the axial clearance between the pocket 32 and the tapered roller 15.
- the relationship with the direction gap AK is that P1> AK and P2> AK.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
形成される分割型保持器の小径側周縁を構成する小径側端辺と、前記分割型保持器の大径側周縁を構成する大径側端辺との間に所要数の柱部が設けられ、柱部間にころ保持用のポケットが形成された円すいころ軸受の保持器セグメントにおいて、前記小径側端辺と大径側端辺のうち少なくとも大径側端辺に軸方向外向きに突き出した大径側係合片が設けられた構成となっている。
図1から図5に示したように、実施形態1に係る円すいころ軸受10は、内輪11とその外周に同芯状に配置された外輪12、前記内輪11の内輪軌道13とこれに対向した外輪12の外輪軌道14との間に介在された円すいころ15、前記円すいころ15を一定間隔に保持する分轄型保持器16によって構成される。
実施形態2に係るセグメント27及びこれを用いた円すいころ軸受10を図6から図9に基づいて説明する。
常、前記の突き出し量は、円すいころ15の平均径の2~8%に設定される。
11 内輪
12 外輪
13 内輪軌道
14 外輪軌道
15 円すいころ
16 分割型保持器
17 小つば部
18 大つば部
19 小径取付部
21 大径取付部
22 小径係合部材
23 大径係合部材
24 突き出し部
25 基部
26 係合凹部
27 セグメント
28 小径側端辺
29 大径側端辺
31 柱部
32 ポケット
33 セグメント本体
33a 小径側辺
33b 大径側辺
34 外枠部材
35 小径側係合片
35a 係合爪
36 大径側係合片
37 短辺
38 係合部材半体
38a 連結つば部
39a 右ねじ穴
39b 左ねじ穴
40 連結部材
41a 右ねじ軸
41b 左ねじ軸
41c 中間軸部
42 抜け止め突起
Claims (19)
- 円すいかご形の保持器をその中心線を含む分割面で等分割した形状をなし、
環状に組み合わせて形成される分割型保持器の小径側周縁を構成する小径側端辺と、前記分割型保持器の大径側周縁を構成する大径側端辺との間に所要数の柱部が設けられ、柱部間にころ保持用のポケットが形成された円すいころ軸受の保持器セグメントにおいて、前記小径側端辺と大径側端辺のうち少なくとも大径側端辺に軸方向外向きに突き出した大径側係合片が設けられたことを特徴とする円すいころ軸受の保持器セグメント。 - 前記柱部の外輪軌道側の面に各ポケットに収納された円すいころに対する係合爪が設けられことを特徴とする請求項1に記載の保持器セグメント。
- 前記小径側端辺に軸方向外向きに突き出した小径側係合片が設けられたことを特徴とする請求項1又は2に記載の円すいころ軸受の保持器セグメント。
- 前記大径側係合片及び小径側係合片が、それぞれ軸受内輪の大つば及び小つばの軸方向外側に設けられた大径取付部及び小径取付部の外周にまで突き出す大きさに形成されたことを特徴とする請求項3に記載の円すいころ軸受の保持器セグメント。
- 前記ポケットを形成する柱部のうち、左右両端部の各柱部の内側面にポケット内方へ突き出した抜け止め突起が設けられ、前記抜け止め突起の突き出し量が、当該ポケットに対する円すいころの強制嵌入を許容する一方、強制嵌入後の抜け出しを規制する大きさに設定されたことを特徴とする請求項1から4のいずれかに記載の円すいころ軸受の保持器セグメント。
- 前記抜け止め突起の突き出し量が、前記円すいころの平均径の2~8%であることを特徴とする請求項5に記載の円すいころ軸受の保持器セグメント。
- 前記抜け止め突起が、前記ポケットのセンターに対し、前記小径側端辺に片寄って設けられたことを特徴とする請求項5又は6に記載の円すいころ軸受の保持器セグメント。
- 前記保持器セグメントは、セグメント本体と、その外周に一体に設けられた外枠部材とから構成され、前記セグメント本体に前記のポケットが形成され、前記外枠部材に前記の大径側係合片及び小径側係合片が設けられたことを特徴とする請求項3から7のいずれかに記載の円すいころ軸受の保持器セグメント。
- 前記セグメント本体は合成樹脂製であり、前記外枠部材が金属製であることを特徴とする請求項5に記載の円すいころ軸受の保持器セグメント。
- 前記セグメント本体と前記外枠部材が合成樹脂によって一体成形されたことを特徴とする請求項9に記載の円すいころ軸受の保持器セグメント。
- 請求項1に記載の保持器セグメントを用いて分割型保持器を構成した円すいころ軸受において、軸受内輪の大つばの軸方向外側に設けられた大径取付部に大径係合部材が嵌合固定され、前記大径係合部材はその係合凹部が内向きとなる逆L形の断面形状に形成されたことを特徴とする円すいころ軸受。
- 請求項2から7のいずれかに記載の保持器セグメントを用いて分割型保持器を構成した円すいころ軸受において、軸受内輪の小つば及び大つばの軸方向外側に設けられた小径取付部と大径取付部にそれぞれ小径係合部材及び大径係合部材が嵌合固定され、前記小径係
合部材及び大径係合部材は、いずれも係合凹部が内向きとなる逆L形の断面形状に形成されたことを特徴とする円すいころ軸受。 - 前記小径係合部材及び大径係合部材は、それぞれ半割リング形の係合部材半体をリング状にねじ結合したものであることを特徴とする請求項12に記載の円すいころ軸受。
- 前記半割リング形の一方の係合部材半体は、その両端部に外径方向に突き出した連結つば部の対向面にねじ穴がそれぞれ設けられ、他方の係合部材半体は、前記ねじ穴のねじの向きのみが逆ねじの対象形状に形成され、中間軸部の両端部にそれぞれ逆ねじのねじ軸が設けられた連結部材の各ねじ軸を前記の対応するねじ穴にねじ結合することにより、両方の係合部材半体を引き寄せてリング状に連結することを特徴とする請求項12に記載の円すいころ軸受。
- 前記小径側係合部材の係合凹部と前記小径側係合片との径方向すき間、及び前記大径側係合部材の係合凹部と前記大径側係合片との径方向すき間が、いずれも前記ポケットに設けられた前記係合爪との間の径方向すき間より大である関係に設定されたことを特徴とする請求項11から14のいずれかに記載の円すいころ軸受。
- 前記小径側係合部材の係合凹部と前記小径側係合片との軸方向すき間及び前記大径側係合部材の係合凹部と前記大径側係合片の軸方向すき間が、いずれも前記ポケットの円すいころに対する軸方向すき間より大である関係に設定されたことを特徴とする請求項11から15のいずれかに記載の円すいころ軸受。
- 組み込み対象となる装置に請求項11に記載の円すいころ軸受を所要の装置に組み込む円すい軸受の組み込み方法において、前記軸受内輪を軸の周りに嵌合固定したのち、前記内輪の大径取付部に大径係合部材を嵌合固定し、その後円すいころを取り付けた前記保持器セグメントの大径側係合片を前記大径取付部材に係合させて当該保持器セグメントを内輪軌道の周りに配列し、その配列が完了したのち円すいころの周りに軸受外輪を嵌合することを特徴とする円すいころ軸受の組み込み方法。
- 組み込み対象となる装置に請求項11から16のいずれかに記載の円すいころ軸受を所要の装置に組み込む円すいころ軸受の組み込み方法において、前記軸受内輪を軸の周りに嵌合固定したのち、前記内輪の大径取付部に大径係合部材を嵌合固定し、その後円すいころを取り付けた前記保持器セグメントの大径側係合片を前記大径取付部材に係合させて当該保持器セグメントを内輪軌道の周りに配列し、その配列が完了したのち前記小径取付部に小径係合部材を嵌合固定して前記保持器セグメントの小径側係合片に当該小径係合部材を係合し、その後円すいころの周りに軸受外輪を嵌合することを特徴とする円すいころ軸受の組み込み方法。
- 前記円すいころ軸受の装置への組み込み完了後、前記小径係合部材及び大径係合部材を前記内輪から分離除去することを特徴とする請求項18に記載の円すいころ軸受の組み込み方法。
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CN201080057248.1A CN102667197B (zh) | 2009-12-25 | 2010-10-27 | 圆锥滚子轴承的保持器节部、圆锥滚子轴承和圆锥滚子轴的组装方法 |
EP10839068.3A EP2518355A4 (en) | 2009-12-25 | 2010-10-27 | Retainer segment for tapered roller bearing, tapered roller bearing, and method for mounting tapered roller bearing |
US13/518,527 US8740471B2 (en) | 2009-12-25 | 2010-10-27 | Retainer segment for tapered roller bearing, tapered roller bearing, and method for mounting tapered roller bearing |
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JP2010180444A JP5757703B2 (ja) | 2009-12-25 | 2010-08-11 | 円すいころ軸受 |
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EP (1) | EP2518355A4 (ja) |
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CN104214224B (zh) * | 2013-06-05 | 2018-07-03 | 舍弗勒技术股份两合公司 | 用于圆柱滚子轴承的保持架及圆柱滚子轴承 |
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Also Published As
Publication number | Publication date |
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JP2011149549A (ja) | 2011-08-04 |
CN102667197B (zh) | 2015-11-25 |
JP5757703B2 (ja) | 2015-07-29 |
EP2518355A1 (en) | 2012-10-31 |
EP2518355A4 (en) | 2017-10-11 |
CN102667197A (zh) | 2012-09-12 |
US20120263408A1 (en) | 2012-10-18 |
US8740471B2 (en) | 2014-06-03 |
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