CN109210164A - Planet roller screw mechanism, automobile hydraulic separation system and automobile - Google Patents
Planet roller screw mechanism, automobile hydraulic separation system and automobile Download PDFInfo
- Publication number
- CN109210164A CN109210164A CN201710534305.4A CN201710534305A CN109210164A CN 109210164 A CN109210164 A CN 109210164A CN 201710534305 A CN201710534305 A CN 201710534305A CN 109210164 A CN109210164 A CN 109210164A
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- Prior art keywords
- roller
- screw
- path section
- lead screw
- nut
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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
- 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
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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
- 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
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H25/2252—Planetary rollers between nut and screw
Abstract
The invention discloses a kind of planet roller screw mechanism, automobile hydraulic separation system and automobiles, including lead screw (1), roller (2) and nut (3), the roller (2) is ring tooth roller, including major diameter section (21) and path section, the major diameter section (21) is meshed with the lead screw (1), and the path section is meshed with the nut (3)；The tooth pitch of each roller (2) major diameter section (21) is consistent with the screw pitch of the lead screw (1), and teeth portion and the end datum level distance A of the identical number of rings of each roller (2) major diameter section (21) the incremented by successively and difference that circumferentially puts in order are equal.The mechanism not only can significantly reduce difficulty of processing and manufacturing cost, with higher bearing capacity, rigidity and service life, moreover, it is also possible to reduce the transmission ratio of planetary roller screw, to reduce torque and power requirement with lead screw cooperation motor, reduce the size of motor.
Description
Technical field
The present invention relates to planetary roller screw technical fields, are especially applied to the planetary roller of automobile hydraulic separation system
Lead screw.The invention further relates to the automobile hydraulic separation systems and automobile that are equipped with the planetary roller screw.
Background technique
Ball screw assembly, is the worm drive pair between lead screw and nut with steel ball (ball) for rolling element, it can will be rotated
Movement becomes moving along a straight line, or opposite.
Planetary roller screw is similar to ball screw arrangement, and difference is that the element of planetary roller screw load transmission is spiral shell
Line roller, rather than ball, it is advantageous that having numerous threaded lines to support load.Rolling in planetary roller screw design structure
Column is non-circulating type, so rotation speed is twice of ball-screw.And it is circulating that the design of ball-screw, which is ball, so
When high speed rotation, ball can collide, and the bearing capacity of roller screw is three times of ball-screw in performance, and the service life is rolling
15 times of ballscrew.Further, since lead and the pitch of planetary roller screw are functional relation, so planetary roller screw
Lead can be designed as integer or decimal, and the lead of ball-screw is limited by the diameter of ball, thus lead is standard
's.
Planetary roller screw is mainly made of main lead screw, nut and roller, and main lead screw is multiple lead screw, and tooth form is generally three
Angle tooth, nut are internal screw thread, and tooth form is identical as main lead screw, and roller is one start screw, and tooth form is identical as main lead screw, roller screws
Side is double wedge shape, and pinion gear and cylinder optical axis are all processed into roller both ends, and cylinder optical axis is fixed in the ring washer hole of end,
Keep equidistant between each roller, end ring washer floating mount is in nut, by circlip axial restraint.
Planetary roller screw currently on the market, in order to guarantee small space, big carrying, while in order to guarantee stable transmission
Than, lead screw is all multiple lead screw, and roller is helical tooth, by taking the small size planetary roller screw of certain model as an example, nominal diameter
For 8mm, number of starts 4, lead 1mm, screw pitch 0.25mm, roller can only take the mode of accurate grinding to be processed,
Difficulty of processing is big, (a planetary roller screw price will be more than ten thousand yuan) with high costs, moreover, the head of roller must be provided with leading
To gear, axial reciprocating displacement accuracy just can guarantee.
Therefore, how to overcome drawbacks described above existing for planetary roller screw, be the skill that those skilled in the art need to solve
Art problem.
Summary of the invention
The object of the present invention is to provide a kind of planet roller screw mechanisms.The mechanism not only can significantly reduce difficult processing
Degree and manufacturing cost have higher bearing capacity, rigidity and service life, moreover, it is also possible to reduce planetary roller screw
Transmission ratio reduces the size of motor to reduce the torque and power requirement with lead screw cooperation motor.
It is a further object of the present invention to provide a kind of automobile hydraulic separation systems equipped with the planet roller screw mechanism.
It is yet another object of the invention to provide a kind of automobiles equipped with the planet roller screw mechanism.
To achieve the above object, the present invention provides a kind of planet roller screw mechanism, including lead screw, with the lead screw is
The heart circumferentially roller of arranged distribution and the nut set on the roller periphery, the roller and lead screw engaged transmission, it is described
Nut and roller engaged transmission, the roller are ring tooth roller, including major diameter section and path section, the major diameter section and the lead screw
It is meshed, the path section is meshed with the nut；The screw pitch phase one of the tooth pitch and the lead screw of each roller major diameter section
Cause, teeth portion and the end datum level distance A of the identical number of rings of each roller major diameter section circumferentially put in order it is incremented by successively and
Difference is equal.
Preferably, the major diameter section of each roller is in intermediate position, and the path section of each roller includes first small
Diameter section and the second path section, first path section and the second path section are located at the both ends of the major diameter section；The nut
Equipped with the first internal screw thread and the second internal screw thread being meshed respectively with first path section and the second path section, in described first
It is spaced apart between screw thread and the second internal screw thread.
Preferably, the teeth portion of the identical number of rings of each roller major diameter section and the difference of end datum level distance A are L/N,
Wherein, the L is the screw pitch of the lead screw, and the N is the quantity of the roller.
Preferably, the nut is ring teeth nut, the tooth pitch of first path section of roller and the second path section with it is described
The screw pitch of lead screw is consistent, and the teeth portion of the identical number of rings of each first path section of roller is equal with end datum level distance B, and
The teeth portion of the identical number of rings of second path section of roller is equal with end datum level distance C.
Preferably, the nut is spiral teeth nut, and screw pitch is equal with the screw pitch of the lead screw；The roller first is small
The tooth pitch of diameter section and the second path section is equal with the screw pitch of the lead screw；The teeth portion of the identical number of rings of each the first path section of the roller
The datum level distance B incremented by successively and difference that circumferentially puts in order is equal with end, and the second path section of the roller is identical
The teeth portion of number of rings and end datum level distance the C incremented by successively and difference that circumferentially puts in order are equal.
Preferably, the teeth portion of the identical number of rings of each the first path section of the roller and the difference of end datum level distance B and
The teeth portion of the identical number of rings of each the second path section of the roller and the difference of end datum level distance C are L/N, wherein the L
For the screw pitch of the lead screw, the N is the quantity of the roller.
Preferably, the head at each roller both ends is not provided with guide gear, and is directly loadable into flange by cylinder optical axis
In the end ring washer hole of disk；The ring flange floating mount passes through circlip axial restraint in the nut.
Preferably, the lead screw is single head lead screw.
To realize above-mentioned second purpose, the present invention provides a kind of automobile hydraulic separation system, including the lead screw for transmission
Mechanism, the screw mechanism are planet roller screw mechanism described in any of the above embodiments.
To realize that above-mentioned third purpose, the present invention provide a kind of automobile, including automobile hydraulic separation system, the automobile liquid
Pressure separation system is above-mentioned automobile hydraulic separation system.
Planet roller screw mechanism provided by the present invention is further improved on the basis of existing technology, roller
No longer it is helical tooth roller, and is designed to ring tooth roller, and ring tooth roller is divided into major diameter section and path section, wherein major diameter section
It is meshed with lead screw, path section is meshed with nut, and the tooth pitch of each roller major diameter section is consistent with the screw pitch of lead screw, and each roller is big
The teeth portion of the identical number of rings of diameter section circumferentially puts in order with end datum level distance A, and incremented by successively and difference is equal, and ring tooth rolls
Column and screw can effectively turn to match and revolve and, can swimmingly transmit power.Since roller is ring tooth roller, teeth portion
Between be not continuous spiral alveolar but interval and mutually independent annular groove, therefore it is more to take grinding, turning, rolling etc.
Kind technique is processed, and can be very good that suitable processing technology is selected to reduce cost；Simultaneously as ring tooth roller can be into
Row multi-point support, therefore there is higher bearing capacity, rigidity and service life；In addition, because roller is two sections of design (major diameter sections
And path section), the transmission ratio of planetary roller screw can be reduced, by adjusting the diameter Relationship of lead screw and roller, can will be passed
It is dynamic than be reduced to 1 hereinafter, can reduce in this way with lead screw cooperation motor torque and power requirement, reduce the size of motor.
In a preferred embodiment, nut can be designed as to ring teeth nut, similarly with ring tooth roller, using ring tooth spiral shell
After mother, under the premise of guaranteeing bearing capacity, rigidity and service life, adding for planet roller screw mechanism can be further decreased
Work amount, difficulty of processing and manufacturing cost.
In another preferred embodiment, by cancelling the guide gear at roller both ends, it not only can be very good to reduce processing
Difficulty and manufacturing cost, moreover, because the meshing point of roller and lead screw is not fixed, it is variation, institute always in transmission process
The power of transmitting, which will not be concentrated, acts on same position, therefore, can preferably improve service life, up to conventional planetary roller
Twice or more of lead screw service life.
Automobile hydraulic separation system provided by the present invention and automobile are equipped with the planet roller screw mechanism, due to described
Planet roller screw mechanism has above-mentioned technique effect, automobile hydraulic separation system and vapour equipped with the planet roller screw mechanism
Vehicle should also have corresponding technical effect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of planet roller screw mechanism provided in an embodiment of the present invention；
Fig. 2 is structural schematic diagram of the planet roller screw mechanism after nut of dismantling shown in Fig. 1；
Fig. 3 is the structural schematic diagram of lead screw shown in Fig. 1；
Fig. 4 is the axonometric drawing of lead screw shown in Fig. 3；
Fig. 5 is the axial sectional view of nut shown in Fig. 1；
Fig. 6 is the scale diagrams of roller in the third planet roller screw mechanism provided in an embodiment of the present invention；
Fig. 7 is the arrangement schematic diagram of roller in the third planet roller screw mechanism provided in an embodiment of the present invention；
Fig. 8 is the cross-sectional view of lead screw, roller and the nut engaged transmission of planet roller screw mechanism shown in Fig. 1.
In figure:
1. in 2. roller of lead screw, 21. major diameter section, 22. first 23. second path section of path section, 3. nut 32. first
33. second internal screw thread of screw thread, 4. ring flange, 5. circlip
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Herein, the terms such as " upper and lower, left and right " are positional relationships based on the figure and establishment, with reference to the accompanying drawings
Difference, corresponding positional relationship is also possible to change therewith, therefore, can not be understood as to the exhausted of protection scope
To restriction；Moreover, the relational terms of such as " first " and " second " or the like are used merely to one with another with identical
The component of title distinguishes, without necessarily requiring or implying between these components there are any this actual relationship or
Sequentially.
Fig. 1, Fig. 2 are please referred to, Fig. 1 is a kind of structural representation of planet roller screw mechanism provided in an embodiment of the present invention
Figure；Fig. 2 is structural schematic diagram of the planet roller screw mechanism after nut of dismantling shown in Fig. 1.
Planet roller screw mechanism provided by the present embodiment, mainly by lead screw 1, roller 2, nut 3, ring flange 4 and
The equal components of circlip 5 are constituted, wherein lead screw 1 is single head lead screw, and the quantity of roller 2 is the six roots of sensation, and roller 2 is centered on lead screw 1
Circumferentially equably arranged distribution in sleeve shaped and sets the periphery that internal thread nut 3 is sleeved on roller 2, roller 2 and lead screw
1 engaged transmission, 2 engaged transmission of nut 3 and roller, guide gear is cancelled on the head at each 2 both ends of roller, direct by cylinder optical axis
It is packed into the end ring washer hole of ring flange 4, keeps equidistant between each roller 2,4 floating mount of ring flange is led in nut 3
Cross 5 axial restraint of circlip.
Fig. 3, Fig. 4, Fig. 5 are please referred to, Fig. 3 is the structural schematic diagram of lead screw shown in Fig. 1；Fig. 4 is the axis of lead screw shown in Fig. 3
Mapping；Fig. 5 is the axial sectional view of nut shown in Fig. 1.
As shown, roller 2 is ring tooth roller, be divided into major diameter section and path section (size herein is relative concept, because
This is clear, and is not belonging to fuzzy term), major diameter section 21 is meshed with lead screw 1, and path section is meshed with nut 3；Each roller
2 major diameter section 21 is in intermediate position, and path section includes the first path section 22 and the second path section 23,22 He of the first path section
Second path section 23 is located at the both ends of major diameter section 21；Nut 3 be equipped with respectively with the first path section 22 and the second path section 23
The first internal screw thread 32 and the second internal screw thread 33 being meshed, are spaced a spacing between the first internal screw thread 32 and the second internal screw thread 33
From forming half is mesh regional, the other half is the structure of non-mesh regional.
The tooth pitch of each 2 major diameter section 21 of roller is consistent with the screw pitch of lead screw 1, moreover, in order to turn match and revolve with, each
The teeth portion size of major diameter section 21 is all different on roller 2, i.e., in the major diameter section 21 of each roller 2, the teeth portion of identical number of rings and left end
The distance A of the datum level incremented by successively and difference that circumferentially puts in order is equal.
Nut 3 is ring teeth nut, the screw pitch phase of the tooth pitch and lead screw 1 of 2 first path section 22 of roller and the second path section 23
Unanimously, the teeth portion of the identical number of rings of each 2 first path section of roller 22 is equal with left end datum level distance B, and each roller 2 second is small
The teeth portion of the identical number of rings of diameter section 23 and left end datum level distance C are also equal.
Specifically, the teeth portion of the identical number of rings of each 2 major diameter section of roller 21 and the difference of left datum level distance A are L/N,
In, L is the screw pitch of lead screw 1, and N is the quantity of roller 2.
By taking six roots of sensation roller 2 as an example, because roller 2 and nut 3 are ring tooth, lead screw 1 is thread, has lead angle, roller 2 is small
The tooth pitch of diameter section 23 and the screw pitch of lead screw 1 maintain consistent (being set as 1mm here), and size B and the C maintenance of every roller 2 are consistent, greatly
The tooth pitch of diameter section 21 is consistent with the screw pitch of lead screw 1, is also 1mm, but the teeth portion of every identical number of rings of 2 major diameter section of roller 21 and left end
The distance A of datum level be it is different, size A is a series of arithmetic progression, and differs L/N, and L is 1mm, rolling in the present embodiment
Column 2 is the six roots of sensation, so the size A of adjacent two rollers 2 differs 1mm/6 namely 0.1667mm.
In second of embodiment, nut 3 can also use spiral teeth nut, and screw pitch is equal with the screw pitch of lead screw 1；Rolling
The tooth pitch of 2 first path section 22 of column and the second path section 23 is equal with the screw pitch of lead screw 1；Each 2 first path section 22 of roller is identical
The teeth portion of number of rings and left end datum level distance the B incremented by successively and difference that circumferentially puts in order are equal, and 2 second path of roller
Teeth portion and the left end datum level distance C of 23 identical number of rings of the section incremented by successively and difference that circumferentially puts in order are equal.
Similarly with first embodiment, the teeth portion of the identical number of rings of each 2 first path section of roller 22 and left end datum level away from
The teeth portion of difference and the identical number of rings of 2 second path section of each roller 23 and the difference of left end datum level distance C from B are L/N,
Wherein, L is the screw pitch of lead screw 2, and N is the quantity of roller 2.
In order to turn match and revolve with, the teeth portion size of major diameter section 21 and path section is different on each roller 2, still
By taking six roots of sensation roller as an example, roller 2 in order to lead screw 1, the rotation of nut 3 and, the tooth pitch of 21 teeth portion of major diameter section and path section teeth portion needs
It is consistent, is 1mm, the screw pitch of nut 3 is also 1mm, consistent with the screw pitch of lead screw 1.
The size A of six roots of sensation roller 2 is a series of arithmetic progression, successively difference difference L/N, and L is 1mm in the present embodiment,
Roller 2 is the six roots of sensation, so the size B of adjacent two rollers 2 differs 1mm/6 namely 0.1667mm.
The size B of six roots of sensation roller 2 is also a series of arithmetic progression, successively difference difference L/N, and L is in the present embodiment
1mm, roller 2 is the six roots of sensation, so the size B of adjacent two rollers 2 differs 1mm/6 namely 0.1667mm.
The size C of six roots of sensation roller 2 is equally a series of arithmetic progression, successively difference difference L/N, and L is in the present embodiment
1mm, roller 2 is the six roots of sensation, so the size C of adjacent two rollers 2 differs 1mm/6 namely 0.1667mm.
Fig. 6, Fig. 7 are please referred to, Fig. 6 is the ruler of roller in the third planet roller screw mechanism provided in an embodiment of the present invention
Very little schematic diagram；Fig. 7 is the arrangement schematic diagram of roller in the third planet roller screw mechanism provided in an embodiment of the present invention.
As shown, the third embodiment is further improved on the basis of the first embodiment, the number of roller
Amount N is even number, is divided into N/2 group, each group of two roller structures are identical.
The spacing of the first teeth portion and the last one teeth portion of the first path section of first group of two roller major diameter sections is denoted as
The spacing of E, first teeth portion of the last one teeth portion and the second path section of first group of two roller major diameter sections are denoted as E+L
(N-1)/N, the spacing of the last one teeth portion of the first teeth portion and the first path section of two roller major diameter sections of remaining each group according to
Secondary increase L/N, between the last one teeth portion of two roller major diameter sections and first teeth portion of the second path section of remaining each group
Away from being sequentially reduced L/N.
Each group of first roller is circumferentially arranged successively to circumferential half, is put in order as from first group to N/
2 groups, each group of second roller is circumferentially arranged successively to circumferential the other half and reversed installation, is put in order as from N/
2 groups to first group.
This structure is described in more detail by taking six roots of sensation roller as an example below:
If being equipped with six roots of sensation roller altogether, six roots of sensation roller is divided into three groups, and the size of two rollers 2 in every group is consistent,
Size marking is as shown in fig. 6, in the first set, the last one tooth of the first teeth portion of roller major diameter section 21 and the first path section 22
The spacing in portion is denoted as E, the last one teeth portion of roller major diameter section 21 and the spacing of first teeth portion of the second path section 23 are denoted as
D, then D=E+5/6mm；In the second set, the last one teeth portion of the first teeth portion of roller major diameter section 21 and the first path section 22
Spacing be E+1/6mm, the space D of first teeth portion of the last one teeth portion of roller major diameter section 21 and the second path section 23=
E+4/6mm；In third group, the first teeth portion of roller major diameter section 21 and the spacing of the last one teeth portion of the first path section 22 are
Space D=E+3/6mm of first teeth portion of E+2/6mm, the last one teeth portion of roller major diameter section 21 and the second path section 23.
As shown in fig. 7, the assembly of roller is in proper order, each group of first roller 2 is circumferentially arranged successively to circumferential direction
Half puts in order as from first group to third group, and each group of second roller 2 is circumferentially arranged successively to circumferential another
It partly and reversely installs, puts in order as from third group to first group, that is to say, that in circumferential preceding half-interval, from first group
Third group is knitted, first 2 normal mounting of roller, in circumferential rear half-interval, from first group of third tissue, second is rolled
Column 2 needs to clubhaul during installation, and first group of two rollers are respectively first and the 6th roller, second group of two rollings
Column is respectively second and the 5th roller, and two rollers of third group are respectively third and the 4th roller.
And so on, for the roller of other quantity, such as eight, ten, 12 etc., such side can also be used
Formula is designed and installs, here just not reinflated description.
After this structure, since roller quantity is even number, and the structure snd size of each group of two rollers
It is identical, therefore the type of roller can be reduced into half, by taking six roots of sensation roller as an example, if according to the side of first embodiment
Case, needs to produce six kinds of various sizes of rollers, and if according to 3rd embodiment scheme, only need double three kinds of production
Various sizes of roller roller helps to improve production efficiency to significantly reduce the manufacture difficulty of roller.
Referring to FIG. 8, Fig. 8 is cuing open for lead screw, roller and the nut engaged transmission of planet roller screw mechanism shown in Fig. 1
View.
As shown, it is not continuous helical tooth between teeth portion that nut 3, which is ring teeth nut, since roller 2 is ring tooth roller
Slot but interval and mutually independent annular groove, therefore can take the kinds of processes such as grinding, turning, rolling to be processed, can
Cost is reduced to select suitable processing technology well；Meanwhile the guide gear by cancelling 2 both ends of roller, not only may be used
To reduce difficulty of processing and manufacturing cost well, moreover, because roller 2 and the meshing point of lead screw 1 are not fixed, in transmission process
In always be variation, be able to carry out multi-point support, the power transmitted, which will not be concentrated, acts on same position, therefore, has
Higher bearing capacity, rigidity and service life, up to twice or more of the conventional planetary roller screw service life.
In addition, two sections because of roller 2 for major diameter section and path section are designed (due to having a major diameter section and two paths
Section, therefore also it is considered as three sections), the transmission ratio of planetary roller screw can be reduced, by adjusting the straight of lead screw 1 and roller 2
Diameter relationship, can by ratio down as low as 1 hereinafter, can reduce in this way with lead screw 1 cooperate motor torque and power requirement, drop
The size of low motor.
What needs to be explained here is that the roller assembly in above-mentioned two embodiment requires to install in proper order, by the ruler of ring tooth
The size of very little A is installed from small to large, and otherwise lead screw can not effectively be revolved and cannot effectively be installed, while the consistency of each roller
It keeps, otherwise will affect efficiency and service life.
Above-described embodiment is only preferred embodiment of the invention, is specifically not limited thereto, on this basis can be according to reality
It needs to make to have and targetedly adjust, to obtain different embodiments.For example, the quantity of roller 2 as needed can be into
One step increases or decreases；Alternatively, ring flange 4 carries out axial restraint, etc. using other component.Due to mode in the cards compared with
It is more, it just no longer illustrates one by one here.
In addition to above-mentioned engine link, the present invention also provides a kind of automobile hydraulic separation system and automobile, wherein automobile liquid
Separation system is pressed to be equipped with the screw mechanism for transmission, and screw mechanism is planet roller screw mechanism described above, and vapour
Vehicle is then equipped with the automobile hydraulic separation system, and refer to the prior art for remaining structure, and repeats no more herein.
Planet roller screw mechanism provided by the present invention, automobile hydraulic separation system and automobile have been carried out in detail above
It introduces.Used herein a specific example illustrates the principle and implementation of the invention, the explanation of above embodiments
It is merely used to help understand the core idea of the present invention.It should be pointed out that for those skilled in the art,
Without departing from the principles of the invention, can be with several improvements and modifications are made to the present invention, these improvement and modification are also fallen
Enter in the protection scope of the claims in the present invention.
Claims (9)
1. a kind of planet roller screw mechanism, including lead screw (1), the circumferentially rolling of arranged distribution centered on the lead screw (1)
Column (2) and the nut (3) for being set to the roller (2) periphery, the roller (2) and lead screw (1) engaged transmission, the nut
(3) with roller (2) engaged transmission, which is characterized in that the roller (2) is ring tooth roller, including major diameter section (21) and path section,
The major diameter section (21) is meshed with the lead screw (1), and the path section is meshed with the nut (3)；Each roller (2)
The tooth pitch of major diameter section (21) is consistent with the screw pitch of the lead screw (1), the tooth of the identical number of rings of each roller (2) major diameter section (21)
Portion and end datum level distance the A incremented by successively and difference that circumferentially puts in order are equal；The major diameter section of each roller (2)
(21) it is in intermediate position, the path section of each roller (2) includes the first path section (22) and the second path section (23), institute
It states the first path section (22) and the second path section (23) is located at the both ends of the major diameter section (21)；The nut (3) is equipped with
The first internal screw thread (32) and the second internal screw thread being meshed respectively with first path section (22) and the second path section (23)
(33), spaced apart between first internal screw thread (32) and the second internal screw thread (33).
2. planet roller screw mechanism according to claim 1, which is characterized in that each roller (2) major diameter section (21)
The teeth portion of identical number of rings and the difference of end datum level distance A are L/N, wherein the L is the screw pitch of the lead screw (1), institute
State the quantity that N is the roller (2).
3. planet roller screw mechanism according to claim 2, which is characterized in that the nut (3) is ring teeth nut, institute
The tooth pitch for stating (2) first path section (22) of roller and the second path section (23) is consistent with the screw pitch of the lead screw (1), each described
The teeth portion of the identical number of rings of (2) first path section (22) of roller is equal with end datum level distance B, and each roller (2)
The teeth portion of the identical number of rings of two path sections (23) is equal with end datum level distance C.
4. planet roller screw mechanism according to claim 2, which is characterized in that the nut (3) is spiral teeth nut,
Its screw pitch is equal with the screw pitch of the lead screw (1)；The tooth pitch of roller (2) first path section (22) and the second path section (23)
It is equal with the screw pitch of the lead screw (1)；The teeth portion and end datum level of the identical number of rings of each (2) first path section (22) of the roller
The distance B incremented by successively and difference that circumferentially puts in order it is equal, and the identical number of rings of (2) second path section (23) of the roller
Teeth portion and end datum level distance the C incremented by successively and difference that circumferentially puts in order are equal.
5. planet roller screw mechanism according to claim 4, which is characterized in that each (2) first path section of roller
(22) teeth portion of identical number of rings is identical as the difference and (2) second path section (23) of each roller of end datum level distance B
The teeth portion of number of rings and the difference of end datum level distance C are L/N, wherein the L is the screw pitch of the lead screw (1), described
N is the quantity of the roller (2).
6. planet roller screw mechanism according to any one of claims 1 to 5, which is characterized in that each roller (2) two
The head at end is not provided with guide gear, and is directly loadable into the end ring washer hole of ring flange (4) by cylinder optical axis；The flange
Disk (4) is mounted in the nut (3), and passes through circlip (5) axial restraint.
7. planet roller screw mechanism according to claim 6, which is characterized in that the lead screw (1) is single head lead screw.
8. automobile hydraulic separation system, including the screw mechanism for transmission, which is characterized in that the screw mechanism is above-mentioned power
Benefit requires 1 to 7 described in any item planet roller screw mechanisms.
9. automobile, including automobile hydraulic separation system, which is characterized in that the automobile hydraulic separation system is the claims
Automobile hydraulic separation system described in 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710534305.4A CN109210164A (en) | 2017-07-03 | 2017-07-03 | Planet roller screw mechanism, automobile hydraulic separation system and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710534305.4A CN109210164A (en) | 2017-07-03 | 2017-07-03 | Planet roller screw mechanism, automobile hydraulic separation system and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109210164A true CN109210164A (en) | 2019-01-15 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710534305.4A Pending CN109210164A (en) | 2017-07-03 | 2017-07-03 | Planet roller screw mechanism, automobile hydraulic separation system and automobile |
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| CN (1) | CN109210164A (en) |
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| CN109667901A (en) * | 2019-01-16 | 2019-04-23 | 杭州新剑机器人技术股份有限公司 | Planetary roller screw electric cylinder |
| CN109854698A (en) * | 2019-01-16 | 2019-06-07 | 杭州新剑机器人技术股份有限公司 | Planetary roller screw pair transmission mechanism |
| CN111779810A (en) * | 2020-06-01 | 2020-10-16 | 北京精密机电控制设备研究所 | Planetary roller screw |
| CN112032267A (en) * | 2020-08-24 | 2020-12-04 | 上海迈道汽配有限公司 | Planetary roller screw and assembling method thereof |
| CN112032268A (en) * | 2020-08-24 | 2020-12-04 | 上海迈道汽配有限公司 | Roller for planetary roller screw and manufacturing method thereof |
| CN112413076A (en) * | 2020-11-25 | 2021-02-26 | 山东博特精工股份有限公司 | Differential planetary roller screw pair |
| CN112855931A (en) * | 2021-01-25 | 2021-05-28 | 东北林业大学 | Tank door opening device based on planetary roller screw |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109667901A (en) * | 2019-01-16 | 2019-04-23 | 杭州新剑机器人技术股份有限公司 | Planetary roller screw electric cylinder |
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| CN112032267A (en) * | 2020-08-24 | 2020-12-04 | 上海迈道汽配有限公司 | Planetary roller screw and assembling method thereof |
| CN112032268A (en) * | 2020-08-24 | 2020-12-04 | 上海迈道汽配有限公司 | Roller for planetary roller screw and manufacturing method thereof |
| CN112032268B (en) * | 2020-08-24 | 2023-11-24 | 江西沃德成科技有限公司 | Roller for planetary roller screw and manufacturing method thereof |
| CN112413076A (en) * | 2020-11-25 | 2021-02-26 | 山东博特精工股份有限公司 | Differential planetary roller screw pair |
| CN112855931A (en) * | 2021-01-25 | 2021-05-28 | 东北林业大学 | Tank door opening device based on planetary roller screw |
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