CN103225652A - A pillar holding rack, a manufacturing method of the same, and an antifriction bearing equipped with the same - Google Patents
A pillar holding rack, a manufacturing method of the same, and an antifriction bearing equipped with the same Download PDFInfo
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- CN103225652A CN103225652A CN2012105637939A CN201210563793A CN103225652A CN 103225652 A CN103225652 A CN 103225652A CN 2012105637939 A CN2012105637939 A CN 2012105637939A CN 201210563793 A CN201210563793 A CN 201210563793A CN 103225652 A CN103225652 A CN 103225652A
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- side plate
- pin
- ring
- pillar
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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
- F16C33/52—Cages for rollers or needles with no part entering between, or touching, the bearing surfaces of the rollers
- F16C33/523—Cages for rollers or needles with no part entering between, or touching, the bearing surfaces of the rollers with pins extending into holes or bores on the axis of the rollers
- F16C33/526—Cages for rollers or needles with no part entering between, or touching, the bearing surfaces of the rollers with pins extending into holes or bores on the axis of the rollers extending through the rollers and joining two lateral cage parts
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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
- F16C43/06—Placing rolling bodies in cages or bearings
- F16C43/065—Placing rolling bodies in cages or bearings in cages
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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
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/30—Material joints
- F16C2226/36—Material joints by welding
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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
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
- F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
Abstract
The invention provides a pillar holding rack used for reinforcing the strength of a first side plate fixed by thread, an antifriction bearing equipped with the same, and a manufacturing method of the same. The pillar holding rack comprises a first side plate (20) and a second side plate (21) which are arranged oppositely on the axial direction, and multiple pillars (18) arranged between the first side plate (20) and the second side plate (21) at certain intervals along the circumstantial direction of the first side plate (20) and the second side plate (21). A thread portion (22) formed on one end on the pillars (18) is fixed in a thread hole (23) disposed on the first side plate. external thread (32) formed on one end of the pillars (18) forms thread teeth by pressing a thread roller on one end of the pillars (18) so as to deform the end portion.
Description
Technical field
The present invention relates to pin-type cage, the manufacture method that has the rolling bearing and the pin-type cage of pin-type cage, particularly a kind of for steel equipment, construction implement, pulverization roller grinding machine and be applicable to used for wind power generation etc. need the durability of high strength, impact and Security important device bearing pin-type cage, have the manufacture method of the rolling bearing and the pin-type cage of pin-type cage.
Background technique
In the past, with respect to normally used basket shape retainer, also had a kind ofly to reduce roller at interval and the pin-type cage that load is big, impact resistance is excellent.Pin-type cage is to lead in the through hole that is arranged at roller centre by pole shape pillar is inserted, controlling roller and roller can be rotated freely, one end of pole shape pillar is cut and processes tapered thread, utilize this screw thread and circular first side plate to fix, the other end of pole shape pillar is soldered to be fixed on circular second side plate, guarantee the interval between adjacent each roller thus, and a plurality of rollers and pin-type cage are become one.
Be applicable to the device that bears big load and impact owing to have the rolling bearing of pin-type cage, therefore, the weld part of the pillar of pin-type cage has also born by great load or impact, vibration produced big stress, so this just requires further to improve the intensity of pin-type cage.
In order to improve the intensity of weld part, disclose a kind of following pin-type cage, it is between the outer circumferential face of the other end of the inner peripheral surface of the coniform through hole that is formed at second side plate and pole shape pillar, after being pressed into ring-type lining with conical surface-shaped outer circumferential face, the other end and the welding of second side plate with pole shape pillar, thereby the other end that makes pillar is fixed on second side plate, and the load that the lining that utilization is pressed into has been avoided putting on the pin-type cage concentrates on weld part (for example with reference to patent documentation 1).
In addition, in order to simplify an end of pillar and being connected of second side plate, a kind of pin-type cage is also disclosed to substitute the welding manner of patent documentation 1 grade, it is after an end of pillar is provided with groove and is embedded in the through hole that is arranged at second side plate, ball etc. is stacked in the groove, makes the substantial middle portion of groove and through hole that plastic deformation take place together, realize fixedly securing (for example with reference to patent documentation 2).
Technical paper formerly
Patent documentation 1: Japan opens clear 56-111318 communique in fact
Patent documentation 2: TOHKEMY 2009-41682 communique
Summary of the invention
The problem that invention will solve
But, pin-type cage in the past and adopt welding or be pressed into fixing, the other end as the described ends of patent documentation 1,2 and adopt the fixing existing pin-type cage of screw thread at pillar, can be because the big load repeatedly and the effect of impact, vibration etc., impel the internal thread and the externally threaded worm tooth that are formed at first side plate in the screw section of an end of pillar partly to wear and tear, make the gap, screw section produce the gap, cause near the pillar of first side plate to become loosening easily.Though weakened near the stress of the pillar first side plate like this, can produce moment near the weld part that is positioned at second side plate of the other end, cause stress and concentrate, therefore need the intensity that further improves weld part or be pressed into portion.
The pillar of pin-type cage is processed by the wire rod of roll forming, therefore, the forging flow line of metal will occur along the shape of pillar, and impact resistance is strong and toughness is high.Therefore, have and be difficult to be damaged and the tough character of excellent strength, also have the character of the stress of anti-the alternating bending, but the tapered thread of the front end of pillar is to form by cutting.
Fig. 8 is the sectional view of the worm tooth that is shaped through cutting on the pillar of in the past pin-type cage, Fig. 8 (a) is the section photo of the worm tooth that is shaped through cutting, Fig. 8 (b) be the worm tooth that is shaped through cutting the cross section forging flow line flow to schematic representation.As shown in Figure 8, the plastic deformation that is formed at the surface of the internal thread that is configured as worm tooth through cutting flows and to be cut off by each worm tooth.Therefore, there is the possibility of the wearing and tearing expansion of worm tooth in the pillar of pin-type cage in the past a little less than the alternating bending stress of the part of worm tooth.
In addition, although the pin-type cage of patent documentation l utilizes being pressed into of lining to avoid putting on the big load concentration of pin-type cage in the weld part of second side plate, but, in case, the problem of the stress relaxation effect that above-mentioned lining brings will occur being difficult to realize at above-mentioned weld part because the wearing and tearing of the external thread part of first side plate make the screw section produce the gap.
In patent documentation 2, be provided with groove at the front end of pillar, ball etc. is stacked on wherein, make the ball plastic deformation, so that the second side plate side is fixed, therefore, the part count that is used for fixing pillar increases, and needs accurate assembling work, and this just the problem that operability worsens occurred.In addition, same with patent documentation 1, when the wearing and tearing owing to the external thread part of first side plate make that the screw section produces the gap, stress will focus between above-mentioned second side plate and the pillar, and therefore, the method that exists further reinforcement becomes essential problem.
The present invention proposes in view of these problems, and its purpose is, has not only improved by the column strength of the first fixing side plate side of screw thread, and has realized the raising of the intensity and the durability of pin-type cage.
Solve the means of problem
First invention that is used to solve above-mentioned problem is a kind of pin-type cage, it is characterized in that having: opposed a pair of ring-type side plate mutually vertically; And be disposed at a plurality of pillars between the above-mentioned a pair of ring-type side plate at certain intervals along the circumferencial direction of above-mentioned a pair of ring-type side plate; The outside thread that is formed at the end of above-mentioned pillar is fixed to the internal thread of being located at one of them side plate in the above-mentioned a pair of ring-type side plate, on the surface of above-mentioned externally threaded worm tooth, is formed with forging flow line continuously along the shape of above-mentioned worm tooth.
In addition, second invention is characterized in that above-mentioned outside thread is by the screw thread clamp for machining being pressed into the end of above-mentioned pillar, makes the end plastic deformation of above-mentioned pillar and is configured as worm tooth.
In addition, the 3rd invention is for having the rolling bearing of pin-type cage, and it is characterized in that having: outer ring, the inner peripheral surface of above-mentioned outer ring have the outer ring lasso; Inner ring, the outer circumferential face of above-mentioned inner ring has the inner ring lasso; The roller that rolls on the roller surface that constitutes by above-mentioned outer ring lasso and above-mentioned inner ring lasso; With the above-mentioned pin-type cage that is used to guide above-mentioned roller, above-mentioned pillar runs through above-mentioned roller.
In addition, the 4th invention is characterized in that for a kind of manufacture method of pin-type cage above-mentioned pin-type cage has: mutual vertically opposed a pair of ring-type side plate; And decide a plurality of pillars of arranged spaced between above-mentioned a pair of ring-type side plate along the circumferencial direction Yi ー of above-mentioned a pair of ring-type side plate; The outside thread that is formed at the end of above-mentioned pillar is fixed to the internal thread of being located at a side plate in the above-mentioned a pair of ring-type side plate, in the method, implemented the screw thread clamp for machining is pressed into the end of above-mentioned pillar, made this end plastic deformation and be configured as the rolling forming manufacturing procedure of worm tooth.
The invention effect
According to the present invention, utilize the intensity of the first fixing side plate side of screw thread by enhancing, can realize the raising of the intensity and the durability of pin-type cage.
Description of drawings
Fig. 1 is the schematic representation of tapered roller bearing with pin-type cage of embodiment of the present invention, wherein, Fig. 1 (a) is the schematic perspective view of integral body with tapered roller bearing of pin-type cage, and Fig. 1 (b) is the enlarged diagram of the part of pin-type cage.
Fig. 2 is the partial structurtes schematic perspective view of the pin-type cage of embodiment of the present invention.
Fig. 3 is the sectional view of pillar of the pin-type cage of embodiments of the present invention.
Fig. 4 is the schematic perspective view that forms the rolling mechanism of worm tooth on the pillar of the pin-type cage of embodiments of the present invention, wherein, Fig. 4 (a) is the schematic perspective view of the integral body of rolling mechanism, Fig. 4 (b) is the schematic perspective view of the roller of two roller feedings, (c) schematic perspective view of the roller of three roller feedings.
Fig. 5 is a generalized section of utilizing the worm tooth that rolling forming shapes on the pillar of the pin-type cage of embodiments of the present invention, wherein, Fig. 5 (a) is a cross sectional photograph of utilizing the worm tooth that rolling forming shapes, and Fig. 5 (b) is the schematic representation of the flow direction of forging flow line that utilizes the section of the worm tooth that rolling forming shapes.
Fig. 6 is to use the pillar of pin-type cage of embodiment of the present invention and the result schematic diagram that existing pillar is measured worm tooth hardness, wherein, Fig. 6 (a) is that Fig. 6 (b) is the measurement result schematic representation to the distance and the hardness on worm tooth summit to the distance of worm tooth bottom and the measurement result schematic representation of hardness.
Fig. 7 is the fatigue data data of Japanese metallic material technical research institute.
Fig. 8 is the sectional view of the worm tooth that is shaped through cutting on the pillar of existing pin-type cage, wherein, Fig. 8 (a) is the cross sectional photograph through the worm tooth of cutting shaping, and Fig. 8 (b) is the schematic representation through the flow direction of the forging flow line of the section of the worm tooth of cutting shaping.
Symbol description
11 ... tapered roller bearing, 12 ... the outer ring, 13 ... the circular cone inner peripheral surface of outer ring, 14 ... inner ring, 15 ... the circular cone outer circumferential face of inner ring, 16 ... pin-type cage, 17 ... tapered roller, 18 ... bar-shaped pillar, 19 ... be arranged at the through hole of the central shaft of bar-shaped pillar, 20 ... first side plate, 21 ... second side plate 22 ... be arranged at the screw section of bar-shaped pillar one end, 23 ... along the tapped hole of first side plate circumferencial direction setting, 24 ... along the embedding hole of second side plate circumferencial direction setting, 31 ... be formed at the interior internal thread of tapped hole of first side plate, 32 ... be formed at the outside thread of bar-shaped pillar, 33 ... weld part, 41 ... rolling mechanism, 42 ... the flat die thread rolling roller.
Embodiment
Below, with reference to the accompanying drawings, embodiments of the present invention are described.Fig. 1 is the schematic representation of tapered roller bearing with pin-type cage of embodiment of the present invention, Fig. 1 (a) is the schematic perspective view of integral body with tapered roller bearing of pin-type cage, and Fig. 1 (b) is the enlarged diagram of the part of pin-type cage.As shown in Figure 1, tapered roller bearing 11 has a plurality of tapered rollers 17 as rolling element, and tapered roller 17 is opened between the circular cone outer circumferential face 15 of circular cone inner peripheral surface 13 that the compartment of terrain remains on outer ring 12 and inner ring 14 along the circumferencial direction sky by pin-type cage 16.
On the central shaft of tapered roller 17, be provided with the bar-shaped pillar 18 slotting logical through holes 19 that are used to make pin-type cage 16.One end of bar-shaped pillar 18 is fixed in ring-type first side plate 20 of pin-type cage 16, and the other end of bar-shaped pillar 18 is fixed in ring-type second side plate 21 of pin-type cage 16.Lead in the central shaft and through hole 19 that is arranged at tapered roller 17 by pillar 18 is inserted, make pin-type cage 16 and a plurality of tapered rollers 17 form one.
Fig. 2 is the schematic perspective view of partial structurtes of the pin-type cage of embodiment of the present invention.As shown in Figure 2, pin-type cage 16 disposes: ring-type first side plate 20, itself and tapered roller bearing 11 Ju You Tong ー central shafts, and with cone rolling 11 along the axial empty standard width of a room in an old-style house every configuration; With ring-type second side plate 21, the internal diameter of inner circumferential surface is greater than the internal diameter of the inner peripheral surface of first side plate 20.
For tapered roller 17 adjacent on the circumferencial direction between first side plate 20 and second side plate 21 is not come in contact mutually, with on the circumferencial direction of first side plate 20, be provided with a plurality of tapped holes 23 at certain intervals, this tapped hole screws togather with the screw section 22 of being located at bar-shaped pillar 18 1 ends; On the circumferencial direction of second side plate 21, be provided with embedding hole 24 at certain intervals, this embedding hole 24 is chimeric with the other end of bar-shaped pillar 18, and the state that a plurality of bar-shaped pillars 18 are inserted in the through hole 19 that leads to the central shaft that is arranged at tapered roller 17 is configured.
Fig. 3 is the generalized section of bar-shaped pillar of the pin-type cage of embodiment of the present invention.As shown in Figure 3, be formed with outside thread 32 on the outer circumferential face of an end of bar-shaped pillar 18, the shape of the internal thread 31 in outside thread 32 and the tapped hole 23 that is formed at first side plate 20 conforms to, and fixes thereby be screwed in the tapped hole 23 of first side plate 20.The other end of bar-shaped pillar 18 is inserted in the embedding hole 24 that is formed at second side plate 21, and is fixing through weld part 33 welding.The other end of bar-shaped pillar 18 has the taper portion of taper, is formed with on its top to be used for bar-shaped pillar 18 is screwed togather the engagement portion 34 of being fixed in first side plate 20.
The outside thread 32 that is formed at bar-shaped pillar 18 1 ends adopts for example screw thread clamp for machining such as rolling mechanism etc., makes an end plastic deformation of bar-shaped pillar 18 and is configured as worm tooth.
Fig. 4 is the schematic perspective view that forms the rolling mechanism of worm tooth on the pillar of the pin-type cage of embodiment of the present invention, Fig. 4 (a) is the schematic perspective view of rolling mechanism integral body, Fig. 4 (b) is the schematic perspective view of the roller of two roller feedings, and Fig. 4 (c) is the schematic perspective view of the roller of three roller feedings.
As shown in Figure 4, the flat die thread rolling roller 42 of two or three drums of rolling mechanism 41 by being thread-shaped by periphery is clamped an end of bar-shaped pillar 18, apply the pressure of the yield strength that surpasses bar-shaped pillar 18 to the central direction of bar-shaped pillar 18 by flat die thread rolling roller 42, make the end rotation of bar-shaped pillar 18 simultaneously, make this end plastic deformation, thereby be configured as the worm tooth of outside thread 32 through rolling forming processing at an end of bar-shaped pillar 18.
Substrate surface shape after the processing depends on the surface configuration of flat die thread rolling roller (seaming roll) 42, makes an end of bar-shaped pillar 18 and flat die thread rolling roller 42 be counterrotating, and simultaneously, pillar 18 is to make flat die thread rolling roller 42 close pillars 18 and rolling forming in constant position.In rolling forming processing, be to form processing at normal temperatures, make that the tissue of base material is moved in the processing, when screw thread forms, do not cut, thereby do not produce smear metal.
By plastic deformation, produce compressive residual stress on the worm tooth surface of outside thread 32.After this, although also can implement high frequency hardening sometimes, make it become the high hardness workpiece, in this case to the main body beyond the outside thread 32 of bar-shaped pillar 18, in order to keep the compressive residual stress that produces because of plastic deformation, outside thread 32 parts are not implemented heat treatment.
Fig. 5 is a generalized section of utilizing the worm tooth that rolling forming shapes on the pillar of the pin-type cage of embodiments of the present invention, Fig. 5 (a) is a cross sectional photograph of utilizing the worm tooth that rolling forming shapes, and Fig. 5 (b) is the schematic representation of the flow direction of forging flow line that utilizes the section of the worm tooth that rolling forming shapes.As shown in Figure 5, because worm tooth shapes by rolling forming, therefore, the tissue of screw thread is reset, and the forging flow line that is formed at thread surface is formed continuously, by each bar worm tooth cut-out along the shape of worm tooth.
Fig. 6 is to use the pillar of pin-type cage of embodiment of the present invention and the result schematic diagram that existing pillar is measured worm tooth hardness, Fig. 6 (a) is that Fig. 6 (b) is to the distance on worm tooth summit and hardness measurement result schematic diagram to the distance of worm tooth bottom and the measurement result schematic representation of hardness.Fig. 6 is the indentation hardness that is used to measure material surface, removes pressure head permanent amount of recess afterwards, the plotted curve that its result represents with straight line with the microscope measurement.
Fig. 6 (a) be with transverse axis represent to outside thread tooth bottom apart from μ m, represent vickers hardness hv with the longitudinal axis, the plotted curve that changes the distance of measuring position and record, Fig. 6 (b) are to represent the plotted curve of representing vickers hardness hv apart from μ m, with the longitudinal axis to outside thread crest point with transverse axis.As shown in Figure 6, no matter be worm tooth bottom or worm tooth summit, compare the about 50HV that all rises of the hardness by the thread surface after the rolling forming processing with carrying out cutting.The tissue that is processed to form the metal of worm tooth through rolling forming is reset, and on the worm tooth surface work-hardening takes place, and the hardness of screw section is improved, even flexural stress acts at the bottom of worm tooth and the screw thread repeatedly,, endurance also is improved, and tensile strength strengthens.
Fig. 7 is the metallic material technical research fatigue data data of fatigue criterion performance of the J1S steel for mechanical structure of Japanese metallic material technical research institute issue.According to Fig. 7 as can be known: when Vickers hardness increased, rotating bending fatigue strength, Compression and Expansion fatigue strength and torsional fatigue strength also raise.Therefore, by improving the surface hardness of screw section, then rotating bending fatigue strength, tractive compressive fatigue strength and screw thread fatigue strength also are improved, therefore, the screw section tolerance intensity of the big load of effect repeatedly is improved, and is expected to realize the prolongation in working life.
The coefficient of waste is made as K, with load be made as W, with sliding distance be made as L, when hardness is made as H, wear extent is usually with V=K * (W * L/H) ... (1) represents.
By shown in the formula (1) as can be known, usually, along with the increase of hardness H, wear extent reduces, therefore, the raising of hardness H also produces effect for the reduction of the wear extent of screw section.For the vibration abrasion that mainly comes from vibration, as the countermeasure of resistance to wearing, it also is effectively that surface layer is applied compressive residual stress, and processes in thread surface generation work-hardening by rolling forming, the compressive residual stress of thread surface is increased, vibration abrasion is also produced effect.
In addition, owing to carry out tapered thread processing, the smear metal in the time of can not producing cutting by rolling forming processing, therefore operating environment is clean and tidy, can not cause causing cutting effect poor yet, and foreshorten to 80% process time, the effect that improves operability is arranged because of smear metal is attached to lathe tool.
As mentioned above, according to present embodiment, the worm tooth of outside thread 32 that is fixed in bar-shaped pillar 18 1 ends of first side plate 20 is by rolling forming processing plastic deformation to take place to be shaped, therefore, because the forging flow line of the worm tooth of outside thread 32 can not be cut off, but on continuous worm tooth surface work-hardening takes place, the hardness of screw section improves, so, even be subjected to the effect of alternating bending stress at the bottom of worm tooth and the screw thread, its endurance also can improve, and tensile strength increases, and can improve the intensity of pin-type cage.
According to present embodiment, because being fixed in the worm tooth of outside thread 32 of bar-shaped pillar 18 1 ends of first side plate 20 by rolling forming processing plastic deformation takes place and is shaped, therefore, the forging flow line of the worm tooth of outside thread 32 can not be cut off, but be continuous shape, therefore, the worm tooth hardness of the outside thread 32 on bar-shaped pillar 18 tops increases, and rotating bending fatigue strength, Compression and Expansion fatigue strength and torsional fatigue strength also are improved.Therefore, the screw section tolerance intensity of the big load of effect repeatedly is improved, and is expected to realize the raising of the durability of pin-type cage.
According to present embodiment, because being fixed in the worm tooth of outside thread 32 of bar-shaped pillar 18 1 ends of first side plate 20 by rolling forming processing plastic deformation takes place and is shaped, therefore, the forging flow line of the worm tooth of outside thread 32 can not be cut off, but forms continuously, therefore, externally threaded compressive residual stress increases, the hardness of worm tooth increases, thereby can suppress the wear extent of screw thread, and the inhibition of vibration abrasion is produced effect.
According to present embodiment, because being fixed in the worm tooth of outside thread 32 of bar-shaped pillar 18 1 ends of first side plate 20 by rolling forming processing plastic deformation takes place and is shaped, therefore, smear metal in the time of can not producing cutting, it is clean and tidy that operating environment becomes, can not cause cutting effect poor yet, can be foreshortened to 80% process time, improve assembly manipulation because of smear metal is attached to lathe tool.
Claims (4)
1. pin-type cage is characterized in that having:
Mutual vertically opposed a pair of ring-type side plate; With
Be disposed at a plurality of pillars between the described a pair of ring-type side plate at certain intervals along the circumferencial direction of described a pair of ring-type side plate,
The outside thread that is formed at the end on the described pillar is fixed to the internal thread of being located at one of them side plate in the described a pair of ring-type side plate,
On the surface of described externally threaded worm tooth, be formed with forging flow line continuously along the shape of described worm tooth.
2. pin-type cage according to claim 1 is characterized in that, described outside thread is by the screw thread clamp for machining being pressed into the end of described pillar, makes the end plastic deformation of described pillar and is configured as worm tooth.
3. rolling bearing that has pin-type cage is characterized in that having:
The outer ring, the inner peripheral surface of described outer ring has the outer ring lasso;
Inner ring, the outer circumferential face of described inner ring has the inner ring lasso;
The roller that rolls on the roller surface that constitutes by described outer ring lasso and described inner ring lasso; With
Be used to guide the claim l or the 2 described pin-type cages of described roller,
Described pillar runs through described roller.
4. the manufacture method of a pin-type cage is characterized in that,
Described pin-type cage has: mutual vertically opposed a pair of ring-type side plate, and be disposed at a plurality of pillars between the described a pair of ring-type side plate at certain intervals along the circumferencial direction of described a pair of ring-type side plate, the outside thread that is formed at the end of described pillar is fixed to the internal thread of being located at a side plate in the described a pair of ring-type side plate, in the manufacture method of described pin-type cage, implemented the screw thread clamp for machining is pressed into the end of described pillar, made the end plastic deformation of described pillar and be configured as the rolling forming manufacturing procedure of worm tooth.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012017826A JP5929246B2 (en) | 2012-01-31 | 2012-01-31 | Manufacturing method of pin type cage |
| JP2012-017826 | 2012-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103225652A true CN103225652A (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105637939A Pending CN103225652A (en) | 2012-01-31 | 2012-12-21 | A pillar holding rack, a manufacturing method of the same, and an antifriction bearing equipped with the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5929246B2 (en) |
| CN (1) | CN103225652A (en) |
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| JPH11173334A (en) * | 1997-10-06 | 1999-06-29 | Nippon Seiko Kk | Roller bearing with holder |
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- 2012-01-31 JP JP2012017826A patent/JP5929246B2/en active Active
- 2012-12-21 CN CN2012105637939A patent/CN103225652A/en active Pending
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|---|---|---|---|---|
| CN1792019A (en) * | 2003-05-19 | 2006-06-21 | 阿斯莫株式会社 | Armature shaft producing method, armature shaft, and rotating electric machine |
| CN101743407A (en) * | 2007-06-20 | 2010-06-16 | 联钢技术国际有限公司 | Thread forming screw thread and corresponding thread roll die |
| JP2009041681A (en) * | 2007-08-09 | 2009-02-26 | Jtekt Corp | Pin type retainer and roller bearing |
| JP2009041682A (en) * | 2007-08-09 | 2009-02-26 | Jtekt Corp | Pin type retainer and roller bearing |
| WO2009127178A1 (en) * | 2008-04-17 | 2009-10-22 | Gottfried Wilhelm Leibniz Universität Hannover | Device and non-cutting shaping method for introducing an outside profile into a workpiece |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5929246B2 (en) | 2016-06-01 |
| JP2013155819A (en) | 2013-08-15 |
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