CN114645905A - Ball screw bearing assembly for brake system - Google Patents
Ball screw bearing assembly for brake system Download PDFInfo
- Publication number
- CN114645905A CN114645905A CN202210322282.1A CN202210322282A CN114645905A CN 114645905 A CN114645905 A CN 114645905A CN 202210322282 A CN202210322282 A CN 202210322282A CN 114645905 A CN114645905 A CN 114645905A
- Authority
- CN
- China
- Prior art keywords
- bearing
- screw
- assembly
- nut
- ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000003466 welding Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 43
- 239000010959 steel Substances 0.000 claims description 43
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- 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
-
- 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
- F16C19/166—Four-point-contact ball bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a ball screw bearing assembly for a brake system, wherein a nut anti-falling structure is designed at the lower end of a lead screw assembly, the ball screw bearing assembly is mainly designed to be spot-welded, the lead screw nut is prevented from falling off from a lead screw in the movement process through a welding spot, the separation of a ball, the lead screw and the nut is prevented, a channel is designed on a bearing outer ring, the channel is designed to be a peach-shaped channel, the axial bearing capacity of a bearing is very high, and a bearing baffle plate is in interference fit with the bearing outer ring and is in clearance fit with the lead screw assembly; the effect of bearing baffle prevents that other accessories are not hard up among the braking system and get into the bearing and lead to the unable normal operating of bearing, lead screw spacer pin and lead screw assembly interference fit through, when lead screw nut in the reciprocal operation in-process that makes a round trip, the lower extreme has anti-disengaging structure, and the upper end stops its motion after spacer pin bumps with the nut bulge for lead screw nut is steady at the rotatory in-process that makes a round trip.
Description
Technical Field
The invention relates to a ball screw bearing assembly for a brake system.
Background
The use of no ball bearing among traditional brake braking system, current trade is in the groping stage that the collocation of ball and bearing was used, install through lead screw and bearing inner race interference fit in the groping stage, because the bearing bears the relative movement of difficult assurance lead screw axle and bearing of great axial force light interference magnitude in the use, make disconnect-type when lead screw and bearing inner race, the location of lead screw and the unblocked difficult control of nut back and forth rotation, whole system installation is more complicated, the adverse effect that no positioning action produced also can be produced in the use. The invention provides a ball screw bearing assembly for a brake system, which has the advantages of high precision requirement of installation and matching of a screw rod, a bearing and an electronic rotor of a brake system assembly, high production cost and low reliability.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a ball screw bearing assembly for a brake system, and in order to achieve the purpose, the ball screw bearing assembly for the brake system comprises a screw nut and a screw ball, wherein the screw ball is arranged on the inner surface of the screw nut, a bearing ball retainer is arranged on the inner surface of a bearing outer ring, the bearing ball retainer is internally provided with the bearing ball, a bearing baffle is arranged on the bearing outer ring, and a planet fixing pin and a screw limiting pin are arranged on the screw assembly.
Further, the screw rod assembly is provided with a channel of the bearing steel ball.
Further, the groove of the bearing steel ball is arranged in a four-point contact structure.
Further, the lower end of the screw rod assembly is provided with a nut anti-disengaging structure, and the nut anti-disengaging structure is set to be in spot welding.
Furthermore, the bearing outer ring and the lead screw nut are provided with a channel required by the lead screw steel ball, the channel is a peach-shaped channel, the lower end of the excircle of the lead screw nut is provided with threads, and the threads are coated with thread fastening glue.
Furthermore, a channel and an inverter are arranged on the screw rod nut, the inverter is an internal circulation and made of metal, and the screw rod steel ball rotates in the channel.
Furthermore, the planet fixing pins are in interference fit with the lead screw assembly, the ends of the extending assemblies are connected with the planet gears, and the number of the extending assemblies is 3-4.
Further, the ball filling angle of the steel ball of the screw rod is 180-193 degrees.
Further, the bearing baffle is in interference fit with the bearing outer ring and is in clearance fit with the screw rod assembly.
Further, the screw rod limiting pin is in interference fit with the screw rod assembly, and when the screw rod nut is in the reciprocating operation process, the lower end of the screw rod nut is provided with an anti-disengaging structure.
The invention has the beneficial effects that:
1. the lower end of the lead screw component is provided with a nut anti-falling structure which is mainly designed to be spot welding, and the lead screw nut is prevented from falling off from a lead screw in the motion process through welding spots, so that the separation of a ball, the lead screw and the nut is prevented;
2. the lead screw nut is provided with a channel, and an reverser device is required to be designed, the reverser is internal circulation and made of metal, so that a lead screw steel ball can rotate in the channel in a circulating manner, the channel is designed on the outer ring of the bearing and is a peach-shaped channel, and the axial bearing capacity of the bearing is very high;
3. the bearing baffle is in interference fit with the bearing outer ring and is in clearance fit with the lead screw assembly; the function of the bearing baffle plate prevents other spare and accessory parts in the brake system from loosening and entering the bearing to cause the bearing to be incapable of normally operating;
4. through interference fit of the lead screw limiting pin and the lead screw assembly, when the lead screw nut rotates back and forth, the lower end of the lead screw nut is provided with an anti-disengaging structure, and the upper end of the lead screw nut is provided with the limiting pin to stop the lead screw nut from moving after colliding with the nut bulge, so that the lead screw nut is stable in the back and forth rotation process.
Drawings
FIG. 1 is a cross-sectional view of a ball screw bearing assembly for a braking system of the present invention;
fig. 2 is a plan view of the ball screw bearing assembly for a brake system according to the present invention.
Detailed Description
Embodiments of the ball screw bearing assembly for a braking system of the present invention are shown in fig. 1-2: the bearing steel ball bearing comprises a lead screw assembly 1 and a bearing outer ring 4, wherein the lead screw assembly 1 comprises a lead screw nut 2 and a lead screw steel ball 3, the lead screw nut is provided with a lead screw steel ball on the inner surface, a bearing steel ball retainer 6 is arranged on the inner surface of the bearing outer ring, the bearing steel ball is arranged inside a bearing steel ball retainer 6 frame body, a bearing baffle plate 8 is arranged on the bearing outer ring 4, and a planet fixing pin 7 and a lead screw limiting pin 9 are arranged on the lead screw assembly 1.
The screw rod assembly 1 is provided with a groove of a bearing steel ball 5, and serves as a bearing inner ring, normal rotation of the steel ball in the groove is met, the groove of the bearing steel ball 5 is of a four-point contact structure, bearing axial bearing capacity is greatly improved, and the requirement of high bearing capacity in the using process is met.
The lower end of the screw rod component 1 is provided with a nut anti-disengaging structure 11, and the nut anti-disengaging structure 11 is set to be spot welding.
The bearing outer ring 4 and the lead screw nut 2 are provided with a channel required by the lead screw steel ball 3, the channel is a peach-shaped channel, the lower end of the outer circle of the lead screw nut 2 is provided with threads, and the threads are coated with thread fastening glue.
The screw nut 2 is provided with a channel and inverters, the inverters are internal circulation and made of metal, the screw steel balls 3 rotate in the channel, the planetary fixed pins 7 are in interference fit with the screw component 1, the ends of the extending components 1 are connected with planetary gears, and the number of the extending components is 3-4.
When the lead screw steel balls 5 are designed, the size and the number of the steel balls are considered to influence the axial bearing capacity and the size of a ball filling angle, the ball filling angle is 180-193 degrees, and the bearing baffle 8 is in interference fit with the bearing outer ring 4 and is in clearance fit with the lead screw assembly 1; the effect of bearing baffle prevents that other accessories are not hard up to get into the bearing among the braking system, leads to the unable normal operating of bearing.
Lead screw spacer pin 9 and 1 interference fit of lead screw subassembly, when lead screw nut 2 in the reciprocal operation in-process that makes a round trip, the lower extreme has anti-disengaging structure 11, and the upper end stops its motion after spacer pin 9 bumps with the nut bulge for lead screw nut is steady at the rotatory in-process that makes a round trip.
The working principle of the invention is as follows: firstly, the screw rod assembly 1 not only serves as a screw rod, namely a channel required by a screw rod steel ball 3 is designed on the screw rod, but also serves as a bearing inner ring, namely a channel required by a bearing steel ball 5 is designed on the assembly, so that the steel ball can normally rotate in the channel; the center of the screw rod is provided with a through hole to meet special requirements of customers, two ends of the screw rod assembly can be provided with center holes so that the screw rod assembly can be conveniently processed, the two ends are propped against in the screw rod processing process to be processed more stably, the screw rod assembly 1 serves as an inner ring of a bearing, the screw rod shaft and the inner ring are integrated, so that the structure is simple, the installation is convenient, the strength of the bearing is improved, and the bearing can be designed into a bearing with high bearing capacity due to space saving; the steel ball channels are all designed into a four-point contact structure, so that the axial bearing capacity of the bearing is greatly improved, and the requirement of high bearing capacity in the use process is met; the lower end of the screw rod component 1 is provided with a nut anti-falling structure 11 which is mainly designed to be spot welding and prevents the screw rod nut 2 from falling off from a screw rod in the movement process through welding spots, a channel required by a screw rod steel ball 3 is designed on the screw rod nut 2, the channel is designed to be a peach-shaped channel, the axial bearing capacity of a bearing is very high, the lower end of the excircle of the screw rod nut 2 is provided with threads, and thread fastening glue is generally coated on the threads in the use process; a channel and an inverter device are designed on the screw rod nut 2, so that the screw rod steel ball 3 can rotate in the channel circularly, and the number of rotation turns of the steel ball needs to be checked and calculated according to the axial bearing capacity; the lead distance of the lead screw is considered when the lead screw steel ball 3 is designed, the lead distance is generally designed to be about 0.6-0.8 of that of a standard steel ball, and the quantity needs to be checked and calculated according to the axial bearing capacity; the bearing outer ring 4 is provided with a channel which is designed into a peach-shaped channel, and the axial bearing capacity of the bearing is very high; when the screw rod steel balls 5 are designed, the size and the number of the steel balls are considered to influence the axial bearing capacity and the size of a ball filling angle, and the ball filling angle is 180-193 degrees generally; the steel ball retainer 6 mainly equally divides the steel balls and guides the steel balls to rotate stably, because the rotating speed of the lead screw is not high, the material of the retainer can be nylon or iron, the planet fixed pin 7 is in interference fit with the lead screw component 1, the end extending out of the component 1 is connected with the planet gear, and the number of the planet fixed pin is 3-4 generally; the bearing baffle 8 is in interference fit with the bearing outer ring 4 and is in clearance fit with the lead screw assembly 1; the function of the bearing baffle plate prevents other spare and accessory parts in the brake system from loosening and entering the bearing, so that the bearing cannot normally run; lead screw spacer pin 9 and 1 interference fit of lead screw subassembly, when lead screw nut 2 in the reciprocal operation in-process that makes a round trip, the lower extreme has anti-disengaging structure 11, and the upper end is blockked by spacer pin 9 for lead screw nut is steady at the rotatory in-process that makes a round trip.
In the above embodiment, which is a ball screw bearing assembly for a brake system according to a preferred embodiment of the present invention, those skilled in the art will appreciate that various changes and substitutions can be made without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a ball screw bearing subassembly for braking system, includes screw assembly, bearing inner race, its characterized in that: the screw assembly comprises a screw nut and a screw steel ball, the screw steel ball is arranged on the inner surface of the screw nut, a bearing steel ball retainer is arranged on the inner surface of a bearing outer ring, the bearing steel ball is arranged in the bearing steel ball retainer body, a bearing baffle is arranged on the bearing outer ring, and a planet fixing pin and a screw limiting pin are arranged on the screw assembly.
2. The ball screw bearing assembly for a brake system according to claim 1, wherein: the screw rod assembly is provided with a channel of a bearing steel ball.
3. The ball screw bearing assembly for a brake system according to claim 2, wherein: the groove of the bearing steel ball is set to be in a four-point contact structure.
4. The ball screw bearing assembly for a brake system according to claim 3, wherein: the lower end of the screw rod assembly is provided with a nut anti-disengaging structure, and the nut anti-disengaging structure is set to be spot welding.
5. The ball screw bearing assembly for a brake system according to claim 4, wherein: the bearing outer ring and the lead screw nut are provided with a channel required by the lead screw steel ball, the channel is a peach-shaped channel, the lower end of the excircle of the lead screw nut is provided with threads, and the threads are coated with thread fastening glue.
6. The ball screw bearing assembly for a brake system according to claim 5, wherein: the screw rod nut is provided with a channel and an inverter, the inverter is an internal circulation and made of metal, and the screw rod steel ball rotates in the channel.
7. The ball screw bearing assembly for a brake system according to claim 6, wherein: the planet fixed pins are in interference fit with the lead screw assembly, the ends of the extending assemblies are connected with the planet gears, and the number of the extending assemblies is 3-4.
8. The ball screw bearing assembly for a brake system according to claim 7, wherein: the ball filling angle of the steel ball of the screw rod is 180-193 degrees.
9. The ball screw bearing assembly for a brake system according to claim 8, wherein: the bearing baffle is in interference fit with the bearing outer ring and is in clearance fit with the screw rod assembly.
10. The ball screw bearing assembly for a brake system according to claim 9, wherein: the screw rod limiting pin is in interference fit with the screw rod assembly, and when the screw rod nut is in the reciprocating operation process, the lower end of the screw rod nut is provided with an anti-disengaging structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210322282.1A CN114645905A (en) | 2022-03-29 | 2022-03-29 | Ball screw bearing assembly for brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210322282.1A CN114645905A (en) | 2022-03-29 | 2022-03-29 | Ball screw bearing assembly for brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114645905A true CN114645905A (en) | 2022-06-21 |
Family
ID=81994906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210322282.1A Pending CN114645905A (en) | 2022-03-29 | 2022-03-29 | Ball screw bearing assembly for brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114645905A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001059559A (en) * | 1999-08-20 | 2001-03-06 | Isel Co Ltd | Ball screw device |
| JP2008190709A (en) * | 2007-01-12 | 2008-08-21 | Nsk Ltd | Ball screw mechanism |
| JP2009204084A (en) * | 2008-02-28 | 2009-09-10 | Nsk Ltd | Ball screw mechanism |
| JP2013249853A (en) * | 2012-05-30 | 2013-12-12 | Nsk Ltd | Ball screw |
| CN104832534A (en) * | 2015-05-14 | 2015-08-12 | 江苏联动轴承有限公司 | Integrated nut assembly bearing for automobile |
| CN204572992U (en) * | 2015-04-27 | 2015-08-19 | 芜湖三行轴承有限公司 | With the combination bearing of ball screw |
| EP3208164A1 (en) * | 2016-02-17 | 2017-08-23 | CW Bearing GmbH | Ball screw |
| KR20170101720A (en) * | 2016-02-29 | 2017-09-06 | 건양대학교산학협력단 | Ball screw with stop stopper |
| CN108980291A (en) * | 2018-09-06 | 2018-12-11 | 江苏品德机电科技有限公司 | A kind of high-mechanic type ball-screw nut transmission device |
| DE102017128522A1 (en) * | 2017-12-01 | 2018-12-20 | Schaeffler Technologies AG & Co. KG | Ball Screw |
| CN208268335U (en) * | 2018-04-02 | 2018-12-21 | 丽水市吴越机械制造有限公司 | A kind of new pattern rolling ball screw pair |
| CN110657158A (en) * | 2019-10-22 | 2020-01-07 | 无锡市第二轴承有限公司 | Four-point contact type high-speed lead screw bearing |
| CN213298584U (en) * | 2020-08-10 | 2021-05-28 | 人本股份有限公司 | Ball screw bearing assembly |
-
2022
- 2022-03-29 CN CN202210322282.1A patent/CN114645905A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001059559A (en) * | 1999-08-20 | 2001-03-06 | Isel Co Ltd | Ball screw device |
| JP2008190709A (en) * | 2007-01-12 | 2008-08-21 | Nsk Ltd | Ball screw mechanism |
| JP2009204084A (en) * | 2008-02-28 | 2009-09-10 | Nsk Ltd | Ball screw mechanism |
| JP2013249853A (en) * | 2012-05-30 | 2013-12-12 | Nsk Ltd | Ball screw |
| CN204572992U (en) * | 2015-04-27 | 2015-08-19 | 芜湖三行轴承有限公司 | With the combination bearing of ball screw |
| CN104832534A (en) * | 2015-05-14 | 2015-08-12 | 江苏联动轴承有限公司 | Integrated nut assembly bearing for automobile |
| EP3208164A1 (en) * | 2016-02-17 | 2017-08-23 | CW Bearing GmbH | Ball screw |
| KR20170101720A (en) * | 2016-02-29 | 2017-09-06 | 건양대학교산학협력단 | Ball screw with stop stopper |
| DE102017128522A1 (en) * | 2017-12-01 | 2018-12-20 | Schaeffler Technologies AG & Co. KG | Ball Screw |
| CN208268335U (en) * | 2018-04-02 | 2018-12-21 | 丽水市吴越机械制造有限公司 | A kind of new pattern rolling ball screw pair |
| CN108980291A (en) * | 2018-09-06 | 2018-12-11 | 江苏品德机电科技有限公司 | A kind of high-mechanic type ball-screw nut transmission device |
| CN110657158A (en) * | 2019-10-22 | 2020-01-07 | 无锡市第二轴承有限公司 | Four-point contact type high-speed lead screw bearing |
| CN213298584U (en) * | 2020-08-10 | 2021-05-28 | 人本股份有限公司 | Ball screw bearing assembly |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220621 |