CN204572992U - With the combination bearing of ball screw - Google Patents
With the combination bearing of ball screw Download PDFInfo
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- CN204572992U CN204572992U CN201520262331.2U CN201520262331U CN204572992U CN 204572992 U CN204572992 U CN 204572992U CN 201520262331 U CN201520262331 U CN 201520262331U CN 204572992 U CN204572992 U CN 204572992U
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- ball nut
- ball
- raceway
- raceway groove
- bearing
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Abstract
The utility model relates to a kind of combination bearing with ball screw, the reverser of ball wire bar pair comprises the reverse block of strip that inner side surface is circular arc, the inner side surface of reverse block offers the reverse raceway groove that spiral helicine pitch is equal with ball screw upper outside raceway groove pitch, ball nut inwall offers axially extended straight trough, reverse block is fixedly inlaid in straight trough, the two-port of reverse raceway groove is docked with interior raceway groove and is formed closed-loop path, the degree of depth of reverse raceway groove is greater than interior raceway groove, reverse raceway groove two-port crosses over the crest of the adjacent two outer raceway grooves of ball screw, ball nut outer peripheral surface is provided with the inner ring raceway of annular, bearing outer ring is arranged with outside ball nut, the inner peripheral surface of bearing outer ring is provided with the outer ring raceway with inner ring raceway corresponding matching, be provided with rolling element between ball nut and bearing outer ring and form bearing body, rolling element is located in inner ring raceway and outer ring raceway.The utility model compared with prior art, has compact structure, the reliable advantage of working stability.
Description
Technical field
The utility model relates to technical field of mechanical transmission, is specifically related to a kind of combination bearing with ball screw.
Background technique
Ball screw is that rotation motion is converted into straight line motion, or is the desirable product of rotation motion by transform linear motion.Common ball screw can be divided into outer circulation type ball screw and inner circulation type ball screw according to reversing mechanism difference, wherein the reversing mechanism of inner circulation type ball screw is common is two kinds: a kind of through hole for beating down-feed screw axis at nut outer peripheral surface, reverser is pressed in through hole, structure is simple, and difficulty of processing is low; Be on nut, make a call to a through hole parallel with screw mandrel, then two ends respectively add a reverser, this one due to through-hole diameter little, length is larger, and difficulty of processing is relatively large.
Used in the equipment of ball screw at some in the past, when ball screw due to oversize, too thin or flexibility is too poor time, the general working method that all can not adopt the rotation of driven by motor ball screw and then drive ball nut movement on leading screw, but adopt working method ball screw being fixed and then rotates with driven by motor ball nut, increase a set of whirligig connecting working table again in the outside of ball nut thereupon, thus drive worktable to move on leading screw.Whirligig is generally bearing; Due to the ball screw of existing Inner eycle, the installation of its reverser needs to destroy nut outer peripheral surface, needs complete bearing to be packed on ball nut, just can realize, thus causes the problem that whole mechanism is complicated and assembling is inconvenient.
Summary of the invention
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of ball nut outer peripheral surface directly can process inner ring raceway, realize ball nut directly for bearing inner race uses, compact structure, the combination bearing of the band ball screw of reliable operation.
For achieving the above object, the utility model provides following technological scheme: a kind of combination bearing with ball screw, include ball screw pair, ball screw pair includes ball screw, ball nut, reverser and steel ball, described ball screw outer circumferential face is provided with spiral helicine outer raceway groove, the internal surface of ball nut is provided with spiral helicine interior raceway groove, the upper outside raceway groove of ball screw matches with the interior raceway groove of ball nut the ball road being formed and roll for ball, reverser is arranged on ball nut and realizes steel ball raceway groove Inner eycle motion in ball nut, bearing body is provided with outside ball nut, it is characterized in that: described reverser includes the reverse block of strip, the inner side surface of reverse block is the circular arc suitable with ball nut inner hole wall, the inner side surface of reverse block offers spiral helicine reverse raceway groove, the pitch of reverse raceway groove is equal with ball screw upper outside raceway groove pitch, described ball nut inwall offers axially extended straight trough, reverse block is fixedly inlaid in the straight trough of ball nut, on reverser, the two-port of reverse raceway groove is docked with raceway groove interior on ball nut inwall and is formed closed-loop path, on described reverser, the degree of depth of reverse raceway groove is greater than raceway groove on described ball nut, on reverser, reverse raceway groove two-port crosses over the crest of the adjacent two outer raceway grooves of described ball screw, described ball nut outer peripheral surface is provided with the inner ring raceway of annular, bearing outer ring is arranged with outside ball nut, the inner peripheral surface of bearing outer ring is provided with the outer ring raceway with inner ring raceway corresponding matching, be provided with rolling element between ball nut and bearing outer ring and form described bearing body, rolling element is located in inner ring raceway and outer ring raceway.
By adopting technique scheme, ball screw pair is transformed, slot at ball nut inner hole wall, reverser adopts strip block designs, realize being inlaid in the inner hole wall of ball nut, on reverser, reverse raceway groove docks with raceway groove interior on ball nut inwall and forms closed-loop path, in the running, steel ball enters in reverse raceway groove, reverse raceway groove comparatively on ball nut inwall in raceway groove dark, the crest that steel ball crosses ball screw by reverse raceway groove enters section start, forms an airtight circulation loop; It is in-built that it realizes reverser, has the advantage of compact structure, and can not damage the outer peripheral surface of ball nut, processes inner ring raceway at the outer peripheral surface of ball nut, and coordinate rolling element and bearing outer ring to form bearing body; During use, bearing outer-ring is fixed, and ball nut rotates, ball screw straight line motion, and the convert rotational motion inputted in the external world is accurately the straight line motion of screw mandrel; Structure is more compact, works more reliable; And the quality of ball nut is little, energy ezpenditure when decreasing rotation.
The utility model is set to further: the axial two-port of described ball nut is provided with the assembling reaming being deeper than described straight trough, the end of ball nut is run through in assembling reaming one end, the assembling reaming the other end extends to the interior channel segments end of ball nut, assembling reaming internal fixtion is equipped with sealing end ring, described straight trough is axially through groove, the axial two ends of the reverse block of described strip abut spacing with sealing end ring phase shape, and the reverse block of strip is fixedly clamped through two sealing end ring.
By adopting technique scheme, reverser easy to assembly, sealing end ring also achieves sealing function.
The utility model is set to further: the inner hole wall of described assembling reaming is provided with annular technology groove.
By adopting technique scheme, conveniently on the inner hole wall of ball nut, being processed to form straight trough, processing more convenient.
The utility model is set to further: described ball nut is provided with the radial direction corresponding with assembling reaming position and locks through hole, radial locking through hole leads in assembling reaming, described sealing end ring is provided with the locking aperture of locking through hole with radial direction, assembling internal locking pin in described radial direction locking through hole, spring bolt outer end embeds in radial locking through hole, and spring bolt the inner is locked in locking aperture.
By adopting technique scheme, spring bolt is radially locked through hole and is loaded, and locks in locking aperture, and realize sealed end ring lock solid in ball nut, assembly structure is simple, assembles solid and reliable.
The utility model is set to further: described bearing body is double-row angular contact bal bearing, the corresponding inner ring raceway being provided with two row and arranging vertically on ball nut outer peripheral surface, inner peripheral surface on bearing outer ring is provided with two row outer ring raceways, is provided with two row rolling elements between ball nut and bearing outer ring.
By adopting technique scheme, it is main radial and axial joint load and moment load that double-row angular contact bal bearing can bear larger radial load, and the axial displacement of two aspects of restriction ball nut, works more reliable and stable.
The utility model is set to further: the annular stop that axial one end of described bearing outer ring is provided with higher than bearing outer ring outer peripheral surface is protruding, and annular stop is protruding is provided with tool withdrawal groove with bearing outer ring outer peripheral surface joint.
By adopting technique scheme, when combination bearing uses, facilitate bearing outer ring and other parts to be seated, the guarantee bearing outer ring of tool withdrawal groove can be press-fit into place.
This practicality is newly set to further: the outer peripheral surface of described bearing outer ring is provided with impurity and stores groove.
By adopting technique scheme, during installation, the impurity such as the chip of generation can be contained in impurity and store in groove, ensure to assemble reliable and reliable operation.
The utility model is set to further: the axial two-port of described bearing body is provided with seal ring.
By adopting technique scheme, improving the sealability of bearing body, improving functional reliability.
The utility model is set to further: the outer peripheral surface of described ball nut is low step-like in middle high, two ends, the large footpath shaft part of ball nut outer peripheral surface and path shaft part joint forming station terrace, inner ring raceway is located on the large footpath shaft part of ball nut, the path shaft part of ball nut is provided with belt pulley, described belt pulley one end coordinates with the step surface of ball nut is spacing, and the belt pulley the other end is spacing through jump ring.
By adopting above-mentioned numerical procedure, facilitating on ball nut and being processed to form inner ring raceway, ensure the working strength of ball nut, facilitate the assembling of belt pulley simultaneously, belt pulley realizes connecting exterior power, drives ball nut to rotate.
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing explanation
Fig. 1 is the combined bearing structure schematic diagram of the utility model specific embodiment band ball screw;
Fig. 2 is the utility model specific embodiment ball nut assembly structure schematic diagram one;
Fig. 3 is the utility model specific embodiment ball nut assembly structure schematic diagram two;
Fig. 4 is the utility model specific embodiment reverser structural representation.
Embodiment
See accompanying drawing 1 ~ accompanying drawing 4, a kind of combination bearing with ball screw disclosed in the utility model, include ball screw pair, ball screw pair includes ball screw 1, ball nut 2, reverser 3 and steel ball (not shown), described ball screw 1 outer circumferential face is provided with spiral helicine outer raceway groove 11, the internal surface of ball nut 2 is provided with spiral helicine interior raceway groove 21, the upper outside raceway groove of ball screw 1 11 matches with the interior raceway groove 21 of ball nut 2 ball road being formed and roll for ball, reverser 3 is arranged on ball nut 2 and realizes steel ball raceway groove 21 Inner eycle motion in ball nut 2, described reverser 3 includes the reverse block 31 of strip, the inner side surface of reverse block 31 is the circular arc suitable with ball nut 2 inner hole wall, the inner side surface of reverse block 31 offers spiral helicine reverse raceway groove 32, the pitch of reverse raceway groove 32 is equal with ball screw 1 upper outside raceway groove 11 pitch, described ball nut 2 inwall offers axially extended straight trough 22, reverse block 31 is fixedly inlaid in the straight trough 22 of ball nut 2, on reverser 3, the two-port of reverse raceway groove 32 is docked with raceway groove 21 interior on ball nut 2 inwall and is formed closed-loop path, on described reverser 3, the degree of depth of reverse raceway groove 32 is greater than raceway groove 21 on described ball nut 2, on reverser 3, reverse raceway groove 32 two-port crosses over the crest 12 of the adjacent two outer raceway grooves of described ball screw 1, bearing body is provided with outside ball nut 2, described ball nut 2 outer peripheral surface is provided with the inner ring raceway 26 of annular, bearing outer ring 6 is arranged with outside ball nut 2, the inner peripheral surface of bearing outer ring 6 is provided with the outer ring raceway 61 with inner ring raceway 26 corresponding matching, be provided with rolling element 7 between ball nut 2 and bearing outer ring 6 and form described bearing body, rolling element 7 is located in inner ring raceway 26 and outer ring raceway 61.Slot at ball nut inner hole wall, reverser adopts strip block designs, realize being inlaid in the inner hole wall of ball nut, on reverser, reverse raceway groove docks with raceway groove interior on ball nut inwall and forms closed-loop path, in the running, steel ball enters in reverse raceway groove, reverse raceway groove comparatively on ball nut inwall in raceway groove dark, the crest that steel ball crosses ball screw by reverse raceway groove enters section start, forms an airtight circulation loop; Achieve reverser in-built, there is the advantage of compact structure, and can not damage the outer peripheral surface of ball nut, ball nut outer peripheral surface is facilitated to process inner ring raceway, ball nut uses as the inner ring of bearing body simultaneously, and structure is more compact, works more reliable; And the quality of ball nut is little, energy ezpenditure when decreasing rotation.
For convenience of the assembling of reverser, the axial two-port of described ball nut 2 is provided with the assembling reaming 23 being deeper than described straight trough 22, the end of ball nut 2 is run through in assembling reaming 23 one end, assembling reaming 23 the other end extends to the interior channel segments end of ball nut 2, assembling reaming 23 internal fixtion is equipped with sealing end ring 4, described straight trough 22 is axially through groove, the axial two ends of the reverse block of described strip 31 abut spacing with sealing end ring 4 phase shape, and the reverse block 31 of strip is fixedly clamped through two sealing end ring 4.Reverser easy to assembly, and sealed end ring design, not only achieve the fixed installation to reverser, also achieve sealing function simultaneously, and sealing end ring adopts rubber.
For making to seal the easy for installation and firm of end ring, described ball nut 2 is provided with the radial direction corresponding with assembling reaming 23 position and locks through hole 24, radial locking through hole 24 leads in assembling reaming 23, described sealing end ring 4 is provided with the locking aperture 41 of locking through hole 24 with radial direction, assembling internal locking pin 5 in described radial direction locking through hole 24, spring bolt 5 outer end embeds in radial locking through hole 24, and spring bolt 5 the inner is locked in locking aperture 41.Wherein spring bolt 5 can be screw and pin etc.
For convenience of being processed to form of straight trough, the inner hole wall of described assembling reaming 23 is provided with annular technology groove 25.
In this specific embodiment, described bearing body is double-row angular contact bal bearing, the corresponding inner ring raceway 26 being provided with two row and arranging vertically on ball nut 2 outer peripheral surface, inner peripheral surface on bearing outer ring 6 is provided with two row outer ring raceways 61, is provided with two row rolling elements 7 between ball nut 2 and bearing outer ring 3.It is main radial and axial joint load and moment load that double-row angular contact bal bearing can bear larger radial load, and the axial displacement of two aspects of restriction ball nut, works more reliable and stable.And, be provided with seal ring 8 in the axial two-port of described bearing body.Improve the sealability of bearing body, improve functional reliability.
Install for convenience of combination bearing, axial one end of described bearing outer ring 6 is provided with the annular stop projection 62 higher than bearing outer ring 6 outer peripheral surface, and annular stop protruding 62 is provided with tool withdrawal groove 63 with bearing outer ring 6 outer peripheral surface joint.The outer peripheral surface of described bearing outer ring 6 is provided with impurity and stores groove 64.When combination bearing uses, facilitate bearing outer ring and other parts to be seated, the guarantee bearing outer ring of tool withdrawal groove can be press-fit into place, and during installation, the impurity such as the chip of generation can be contained in impurity and store in groove, ensure to assemble reliable and reliable operation.
In this specific embodiment, the outer peripheral surface of described ball nut 2 is low step-like in middle high, two ends, the large footpath shaft part 27 of ball nut 2 outer peripheral surface and path shaft part 28 joint forming station terrace 29, inner ring raceway 26 is located on the large footpath shaft part 27 of ball nut 2, the path shaft part 28 of ball nut 2 is provided with belt pulley 9, belt pulley 9 is arranged on away from bearing outer ring 6 one end away from annular stop projection 62, described belt pulley 9 one end coordinates with the step surface 29 of ball nut 2 is spacing, and belt pulley 9 the other end is spacing through jump ring 91.The outer peripheral surface of ball nut 2 is provided with jump-ring slot, and jump ring 91 is fixed in jump-ring slot.Facilitate on ball nut and be processed to form inner ring raceway, ensure the working strength of ball nut, facilitate the assembling of belt pulley simultaneously, belt pulley realizes connecting exterior power, drives ball nut to rotate.
Claims (9)
1. the combination bearing with ball screw, include ball screw pair, ball screw pair includes ball screw, ball nut, reverser and steel ball, described ball screw outer circumferential face is provided with spiral helicine outer raceway groove, the internal surface of ball nut is provided with spiral helicine interior raceway groove, the upper outside raceway groove of ball screw matches with the interior raceway groove of ball nut the ball road being formed and roll for ball, reverser is arranged on ball nut and realizes steel ball raceway groove Inner eycle motion in ball nut, bearing body is provided with outside ball nut, it is characterized in that: described reverser includes the reverse block of strip, the inner side surface of reverse block is the circular arc suitable with ball nut inner hole wall, the inner side surface of reverse block offers spiral helicine reverse raceway groove, the pitch of reverse raceway groove is equal with ball screw upper outside raceway groove pitch, described ball nut inwall offers axially extended straight trough, reverse block is fixedly inlaid in the straight trough of ball nut, on reverser, the two-port of reverse raceway groove is docked with raceway groove interior on ball nut inwall and is formed closed-loop path, on described reverser, the degree of depth of reverse raceway groove is greater than raceway groove on described ball nut, on reverser, reverse raceway groove two-port crosses over the crest of the adjacent two outer raceway grooves of described ball screw, described ball nut outer peripheral surface is provided with the inner ring raceway of annular, bearing outer ring is arranged with outside ball nut, the inner peripheral surface of bearing outer ring is provided with the outer ring raceway with inner ring raceway corresponding matching, be provided with rolling element between ball nut and bearing outer ring and form described bearing body, rolling element is located in inner ring raceway and outer ring raceway.
2. the combination bearing according to claim 1 with ball screw, it is characterized in that: the axial two-port of described ball nut is provided with the assembling reaming being deeper than described straight trough, the end of ball nut is run through in assembling reaming one end, the assembling reaming the other end extends to the interior channel segments end of ball nut, assembling reaming internal fixtion is equipped with sealing end ring, described straight trough is axially through groove, the axial two ends of the reverse block of described strip abut spacing with sealing end ring phase shape, and the reverse block of strip is fixedly clamped through two sealing end ring.
3. the combination bearing according to claim 2 with ball screw, is characterized in that: the inner hole wall of described assembling reaming is provided with annular technology groove.
4. the combination bearing with ball screw according to Claims 2 or 3, it is characterized in that: described ball nut is provided with the radial direction corresponding with assembling reaming position and locks through hole, radial locking through hole leads in assembling reaming, described sealing end ring is provided with the locking aperture of locking through hole with radial direction, assembling internal locking pin in described radial direction locking through hole, spring bolt outer end embeds in radial locking through hole, and spring bolt the inner is locked in locking aperture.
5. the combination bearing according to claim 1 with ball screw, it is characterized in that: described bearing body is double-row angular contact bal bearing, the corresponding inner ring raceway being provided with two row and arranging vertically on ball nut outer peripheral surface, inner peripheral surface on bearing outer ring is provided with two row outer ring raceways, is provided with two row rolling elements between ball nut and bearing outer ring.
6. the combination bearing according to claim 1 with ball screw, it is characterized in that: the annular stop that axial one end of described bearing outer ring is provided with higher than bearing outer ring outer peripheral surface is protruding, and annular stop is protruding is provided with tool withdrawal groove with bearing outer ring outer peripheral surface joint.
7. the combination bearing with ball screw according to claim 1 or 5 or 6, is characterized in that: the outer peripheral surface of described bearing outer ring is provided with impurity and stores groove.
8. the combination bearing according to claim 1 with ball screw, is characterized in that: the axial two-port of described bearing body is provided with seal ring.
9. the combination bearing according to claim 1 with ball screw, it is characterized in that: the outer peripheral surface of described ball nut is low step-like in middle high, two ends, the large footpath shaft part of ball nut outer peripheral surface and path shaft part joint forming station terrace, inner ring raceway is located on the large footpath shaft part of ball nut, the path shaft part of ball nut is provided with belt pulley, described belt pulley one end coordinates with the step surface of ball nut is spacing, and the belt pulley the other end is spacing through jump ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262331.2U CN204572992U (en) | 2015-04-27 | 2015-04-27 | With the combination bearing of ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262331.2U CN204572992U (en) | 2015-04-27 | 2015-04-27 | With the combination bearing of ball screw |
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| Publication Number | Publication Date |
|---|---|
| CN204572992U true CN204572992U (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520262331.2U Active CN204572992U (en) | 2015-04-27 | 2015-04-27 | With the combination bearing of ball screw |
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| Country | Link |
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| CN (1) | CN204572992U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020125804A (en) * | 2019-02-04 | 2020-08-20 | 日本精工株式会社 | Ball screw device |
| WO2021255948A1 (en) * | 2020-06-16 | 2021-12-23 | 日本精工株式会社 | Ball screw device |
| CN114645905A (en) * | 2022-03-29 | 2022-06-21 | 人本股份有限公司 | Ball screw bearing assembly for brake system |
-
2015
- 2015-04-27 CN CN201520262331.2U patent/CN204572992U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020125804A (en) * | 2019-02-04 | 2020-08-20 | 日本精工株式会社 | Ball screw device |
| WO2021255948A1 (en) * | 2020-06-16 | 2021-12-23 | 日本精工株式会社 | Ball screw device |
| JPWO2021255948A1 (en) * | 2020-06-16 | 2021-12-23 | ||
| CN114645905A (en) * | 2022-03-29 | 2022-06-21 | 人本股份有限公司 | Ball screw bearing assembly for brake system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |