CN110375048A - A kind of embedded interior circulation ball nut - Google Patents
A kind of embedded interior circulation ball nut Download PDFInfo
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- CN110375048A CN110375048A CN201910722104.6A CN201910722104A CN110375048A CN 110375048 A CN110375048 A CN 110375048A CN 201910722104 A CN201910722104 A CN 201910722104A CN 110375048 A CN110375048 A CN 110375048A
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- 230000004087 circulation Effects 0.000 title claims abstract description 47
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims description 41
- 230000037431 insertion Effects 0.000 claims description 41
- 230000033001 locomotion Effects 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 10
- 238000013461 design Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000003032 molecular docking Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
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
- 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
- F16H25/2233—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with cages or means to hold the balls in position
Abstract
The present invention provides a kind of embedded interior circulation ball nut, load capacity is improved with the ball in two closed circuits of the helical cavity raceway composition being connected to by two embedded circulators, embedded circulator is chimeric with nut body to be integrated, and the circulating path of ball carries out inside nut body.Since circulator is two Semi separation type structures, time pearl path of more general circulator is longer, place negligible amounts, reduce circulator mounting hole, thus nut is rigidly enhanced, and it therefore can achieve the effect that high speed, low-noise, and the compact design can make nut reduced diameter size, and it is fine to achieve the effect that save space, appearance.
Description
Technical field
The invention belongs to the accurate circular rolling ball screw pair technical fields more particularly to a kind of insertion in mechanical transmissioning technology
Circulation ball nut in formula.
Background technique
Ball screw assembly, is that the core functional components of high-end equipment and numerically-controlled machine tool and electromechanical integrated product can not replace
The crucial auxiliary equipment in generation.Typical ball screw assembly, is made of lead screw, nut, steel ball, circulator etc..Major function is will to rotate
Movement conversion linear movement, or torque is converted into axial repeated action power, while having both high-precision, invertibity and high efficiency
The characteristics of.
In the ball screw assembly, of conventional lead, each circle steel ball of nut all matches independent circulator, due to circulator number
Amount is more, frequently loads and unloads when steel ball enters and leaves circulator.So causing operation flexibility poor, load capacity is relatively
It is weak, it is also easy to produce noise, running causes the influence to whole service life for a long time.
Summary of the invention
To solve the above problems, the present invention provides a kind of embedded interior circulation ball nut, it is applied to pass through ball fitting
Lead screw shaft on, comprising:
One nut body and two embedded circulators being detachably connected with the nut body；
Both ends symmetric position is respectively equipped with insertion groove on the nut body outer peripheral surface；The size of the embedded circulator
It is adapted, and can be embedded in the insertion groove with the size of the insertion groove；
Edge is axially arranged with nut thread slot corresponding with the threads of lead screw slot of lead screw shaft periphery on the nut body inner peripheral surface；
The nut thread slot can cooperate with the threads of lead screw slot to be docked, and independent two spiral shells for ball moving are formed
Revolve chamber raceway；
Each embedded circulator is connected to the corresponding helical cavity raceway, is formed independent around the screw rod
The closed circuit of the axial centre spiral of axis moves back and forth on length direction in order in screw axis rotation, the spiral shell
Parent moves back and forth on the length direction of the screw axis, wherein the ball in each circulator is closed corresponding
Close shuttling movement in circuit.
Preferably, the U-shaped channel for the ball moving is equipped in the embedded circulator；
After the screw axis and nut body assembly, the U-shaped channel is connected to the corresponding helical cavity raceway,
Form independent closed circuit.
Preferably, the embedded circulator includes loop body；The both ends of the loop body length direction are respectively provided with
One extends grafting tang outstanding relative to the loop body；
The ball channel for rolling the pearl shuttling movement is equipped in the loop body；The grafting tang and the ball
Channel connection, forms the U-shaped channel；
Insert corresponding with each of the embedded circulator grafting tang is equipped in each insertion groove
Connect position；
When the embedded interior circulation ball nut and the lead screw shaft assemble, described in the embedded circulator insertion
On embedded interior circulation ball nut, the grafting tang grafting enters the corresponding grafting position of the insertion groove, in order to institute
U-shaped channel is stated to be connected to the corresponding helical cavity raceway.
Preferably, smooth extension channel is also connected in each grafting tang front end；
The smooth opening side for extending channel of two grafting tangs in each embedded circulator
To distinguishing；
In ball when shuttling movement in the internal U-shaped channel, two grafting of the embedded circulator are convex
The smooth extension channel of mouth front end is docked with grafting position described at the helical cavity raceway corresponding two respectively, the grafting
The smooth extension channel of tang can receive the ball in the helical cavity raceway as process mouth, or release ball as backhaul mouth
To the helical cavity raceway.
Preferably, the two sides of the length direction of the loop body are respectively provided with a limit track, and with the limit
The shackle member of track connection
It is equipped in the insertion groove corresponding embedding with the limit track of the embedded circulator length direction two sides
Enter detent；
When the embedded circulator is embedded in the nut body, the shackle member on the limit track is caught in the insertion
Detent docks the limit track and the outer rim of the insertion detent.
Preferably, the embedded circulator further includes the assembling in the loop body；
Each embedded circulator includes two assemblings, is respectively arranged on the length direction of the loop body
Two sides, and connect with the limit track.
Preferably, it in the insertion groove of the nut body, is additionally provided with described with each of the embedded circulator
The corresponding dismounting position of assembling.
Preferably, the axial centre of the screw axis is surrounded in the intracorporal each independent closed circuit of the nut
The circle number of spiral is at least 3 circles.
In addition, to solve the above problems, the application also provides a kind of multi-cycle high load ball screw assembly, including lead screw
Axis, and the embedded interior circulation ball nut as described above on the screw axis is set to by ball sleeve.
The present invention provides a kind of embedded interior circulation ball nut, and insertion is arranged by the two sides symmetric position in nut body
Formula circulator, and each embedded circulator is connected to corresponding helical cavity raceway, is formed independent around the screw axis
Axial centre spiral two closed circuits, in screw axis rotation, the ball in two embedded circulators is corresponding
Queue loopy moving in closed circuit realizes that nut body when moving back and forth on the length direction of screw axis, is embedded in by two
Ball in two closed circuits that formula circulator is formed with the helical cavity raceway being connected to improves load capacity, also, embedded
Circulator is chimeric with nut body to be integrated, and the circulating path of ball carries out inside nut body, and circulator is two Semi separation type knots
Time pearl path of structure, more general circulator is longer, places negligible amounts, reduces circulator mounting hole, thus nut rigidly obtains
It with enhancing, and can achieve the effect that improve load capacity, high speed, low-noise, and the design of the compact, can make
Nut reduced diameter size achievees the effect that saving space, appearance are fine.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embedded interior circulation ball nut of the application；
Fig. 2 is the head-up structural schematic diagram of the embedded interior circulation ball nut of the application；
Fig. 3 is the structural schematic diagram of the application nut body；
Fig. 4 is the head-up structural schematic diagram of the application nut body；
Fig. 5 is the schematic diagram of the section structure of the embedded interior circulation ball nut of the application；
Fig. 6 is the structural schematic diagram of the embedded circulator of the application；
Fig. 7 is the oblique present invention looks up structural representation of the embedded circulator of the application；
Fig. 8 is the backside configuration schematic diagram of the embedded circulator of the application；
Fig. 9 is the side coil structural schematic diagram of the embedded circulator of the application；
Figure 10 is the diagrammatic cross-section of the embedded circulator of the application；
Figure 11 is the assembling structure schematic diagram of the application circular rolling ball screw pair；
Figure 12 is the diagrammatic cross-section of the application circular rolling ball screw pair；
Figure 13 is the perspective view of the explosion of the application circular rolling ball screw pair；
Figure 14 is the schematic diagram of the embedded circulator of the application circular rolling ball screw pair；
Appended drawing reference:
| Title | Number | Title | Number |
| Nut body | 1 | Limit track | 22 |
| It is embedded in groove | 11 | Shackle member | 23 |
| Nut thread slot | 12 | Assembling | 24 |
| Grafting position | 13 | Group capping | 25 |
| It is embedded in detent | 14 | Docking recess | 26 |
| Dismount position | 15 | Dock raised plug-in unit | 27 |
| Embedded circulator | 2 | U-lag | 21a |
| U-shaped channel | 21 | Lead screw shaft | 3 |
| Loop body | 211 | Threads of lead screw slot | 31 |
| Grafting tang | 212 | Helical cavity raceway | 4 |
| Ball channel | 213 | ||
| It is smooth to extend channel | 214 |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, can also can also be two indirectly connected through an intermediary
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be
Concrete meaning in invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Below by specific embodiment combination attached drawing, invention is further described in detail.
Embodiment 1:
With reference to Fig. 1-10, a kind of embedded interior circulation ball nut, applied to by wrapping in the lead screw shaft 3 of ball fitting
Include a nut body 1 and two embedded circulators 2 being detachably connected with the nut body 1；
Both ends symmetric position is respectively equipped with insertion groove 11 on 1 outer peripheral surface of nut body；The embedded circulator 2
Size and the size of the insertion groove 11 are adapted, and can be embedded in the insertion groove 11；
Edge is axially arranged with nut spiral shell corresponding with the threads of lead screw slot 31 of 3 periphery of lead screw shaft on 1 inner peripheral surface of nut body
Groove 12；
The nut thread slot 12 can cooperate with the threads of lead screw slot 31 to be docked, and forms independent two for ball moving
Helical cavity raceway 4；
Each embedded circulator 2 is connected to the corresponding helical cavity raceway 4, is formed independent around the silk
The closed circuit of the axial centre spiral of bar axis moves back and forth on length direction in order in screw axis rotation, described
Nut body 1 moves back and forth on the length direction of the screw axis, wherein the ball in each circulator is in correspondence
Closed circuit in shuttling movement.
It is above-mentioned, it after nut body 1 is combined with embedded circulator 2, can be sheathed on outside lead screw shaft 3, also, set in nut body 1
There is nut thread slot 12, lead screw shaft 3 is externally provided with threads of lead screw slot 31, and nut thread slot 12 and threads of lead screw slot 31 match,
The helical cavity raceway 4 slided for ball queue is formed after assembly.Helical cavity raceway 4 is connected with the circulator of insertion, each
Circulator is independent to be connected to corresponding helical cavity raceway 4, forms independent closed circuit.
Above-mentioned, the ball in each closed circuit only slides in the helical cavity raceway 4 and circulator in the closed circuit.
It is above-mentioned, circulator, for portion realizes the device recycled in the inner for making ball.It will be traditional external in the present embodiment
Formula or built-in circulator are changed to embedded two Semi separation types structure；Circulator is set to be embedded in nut body 1, after mounting
It is integrally formed with nut body 1, which is 2 half detachable devices.Embedded circulator 2 is chimeric with nut body 1 to be integrated,
The circulating path that screw axis is formed in the ball of nut body 1 carries out inside nut body 1, can reach and improve load capacity, height
Fast, low-noise effect.Meanwhile the design of the compact, nut reduced diameter size can be made, reach and save space, outer
See compact effect.
It is above-mentioned, embedded interior circulation ball nut provided in the present embodiment, using metal injection molding technology, i.e., with
The mixture of metal powder and bonding agent is raw material, and viscous state will be under certain temperature, speed and pressure by injector
Mixture inject mold cavity, the prefabricated blank with certain shapes size is obtained through cooling and shaping depanning, viscous by removing
It connects agent and sintering obtains the product with certain mechanical and physical performance.
Circulator applied by embedded interior circulation ball nut provided in the present embodiment is compared and regular circulation device
There is difference substantially on sintering process, circulator applied by the embedded interior circulation ball nut in the present embodiment,
Two prefabricated blanks are first combined into complete closed circulation when being sintered and are returned using combined sintering technique for the combination of two hemihedrism
Road re-sinters sizing, to improve the precision of circulator inner looping and the rigidity of entirety.
It is above-mentioned, it is embedded in groove 11, the size in slot matches with the size of embedded circulator 2.Further, embedding
The shape for entering formula circulator 2 can be strip corresponding with specific inside circulating ring number, corresponding to be embedded in 11 liquid level of groove
Strip.
The present embodiment provides a kind of embedded interior circulation ball nuts, by being arranged two symmetrically in 1 periphery of nut body
Embedded circulator 2, and each circulator is connected to corresponding independent helical cavity raceway 4, is formed independent around described
Multiple closed circuits of the axial centre spiral of screw axis, in screw axis rotation, the ball in embedded circulator 2 is in correspondence
Closed circuit in circulation sliding, realize embedded interior circulation ball nut when being moved back and forth on the length direction of screw axis,
The ball in closed circuit being made up of two embedded circulators 2 with the helical cavity raceway 4 being connected to improves load capacity, and
And the circulator of insertion is chimeric with nut body 1 is integrated, the circulating path of ball carries out inside nut body 1, due to circulator
Time pearl path for two Semi separation type structures, more general circulator is longer, places negligible amounts, reduces circulator mounting hole,
Thus nut is rigidly enhanced, and can achieve the effect that improve load capacity, high speed, low-noise, and this is compact
The design of type can make nut reduced diameter size, achieve the effect that saving space, appearance are fine.The setting of multi-cycle device, and
The setting of embedded circulator 2, compared to traditional single head ball-screw, transmission efficiency is high, and driving torque is small, it can be achieved that quickly
Transmission or positioning.
Embodiment 2:
With reference to Fig. 1-10, based on the above embodiment 1, it is described the present embodiment provides a kind of embedded interior circulation ball nut
The U-shaped channel 21 for the ball moving is equipped in embedded circulator 2；
After the screw axis and the nut body 1 assembly, the U-shaped channel 21 and the corresponding helical cavity raceway 4
Connection, forms independent closed circuit.
U-shaped channel 21 is can combine with nut body 1 with U-shape for ball army's column loopy moving in the inner
Space.
Further, the embedded circulator 2 includes loop body 211；211 length direction of loop body
Both ends are respectively provided with one and extend grafting tang 212 outstanding relative to the loop body 211；
The ball channel 213 for rolling the pearl shuttling movement is equipped in the loop body 211；The grafting tang 212
It is connected to the ball channel 213, forms the U-shaped channel 21；
It is right with each of the embedded circulator 2 grafting tang 212 to be equipped in each insertion groove 11
The grafting position 13 answered；
When the embedded interior circulation ball nut and the lead screw shaft 3 assemble, the embedded circulator 2 is embedded in institute
It states on embedded interior circulation ball nut, 212 grafting of grafting tang enters the corresponding grafting position 13 of the insertion groove 11,
In order to which the U-shaped channel 21 is connected to the corresponding helical cavity raceway 4.
Above-mentioned, loop body 211 is the main body of circulator, and inside is equipped with the ball channel 213 mobile for ball, and
The length direction both ends of loop body 211,1 direction of geared nut body extends grafting tang 212 outstanding when being respectively provided with installation, should
Grafting tang 212 is the mouth being connected to each other with corresponding grafting position 13 being provided projectingly.When installing docking, grafting tang 212 is inserted
Enter to be embedded in groove 11, and be inserted into corresponding grafting position 13, go deep into helical cavity raceway 4, thus on the one hand due to tang
Go deep into helical cavity raceway 4 that circulator and nut can be made to play fixed function when assembling, improves stability, prevent from falling off；
On the other hand, tang gos deep into helical cavity raceway 4 that the path of ball operation can be made more smooth, makes the movement routine of ball, by
Ball channel 213 extends in helical cavity raceway 4, blocks when avoiding by moving in ball channel 213 to helical cavity raceway 4
, further increase the stability and smooth effect of ball operation.
Further, smooth extension channel 214 is also connected in each 212 front end of grafting tang；
The smooth extension channel 214 of two grafting tangs 212 in each embedded circulator 2
Opening direction distinguishes；
In ball when shuttling movement in the internal U-shaped channel 21, two grafting of the embedded circulator 2
The smooth extension channel 214 of 212 front end of tang is right with the grafting position at the helical cavity raceway 4 corresponding two respectively
It connecing, the smooth extension channel 214 of the grafting tang 212 can receive the ball in the helical cavity raceway 4 as process mouth,
Or ball is released to the helical cavity raceway 4 as backhaul mouth.
In each 212 front end of grafting tang, it is additionally provided with smooth extension channel 214, in an embedded circulator 2,
The opening direction in the smooth extension channel 214 of two grafting tangs 212 is different, for example, can for one towards upper end, as into
Journey mouth, one towards lower end, as backhaul mouth.Due to the difference of opening direction, circulator is enable to receive or release helical cavity rolling
Ball in road 4 makes internal ball form circulation.
Above-mentioned, the corresponding opening in grafting position of helical cavity raceway, as nut stream ball mouth are processed in nut and circulator
In technique, therefore, to assure that the docking (the helical cavity raceway that circulator is docked to nut) to fit together perfectly between the two, thus real
The accessible smooth rolling of existing internal ball needs stream ball mouth by being largely directed to nut and circulator among these
It is time-consuming with the repeated multiple times polishing work of stream ball mouth mating interface, substantially increase processing cost and machine components sheet
The cost of body.
In the present embodiment, in embedded interior circulation ball nut, a grafting position is set, is connected with internal circulation canal
Connect, on the other hand in the grafting tang front end of embedded circulator 2, be respectively set one it is smooth extend channel 214, and due to
When the circulation of ball, into different with the direction that rolls out, and two smooth opening directions for extending channels up and down is set and are distinguished,
Play the guiding role for ball.Also, it is directly docked with helical cavity raceway by smoothly extending channel, will smoothly extend channel
Go deep into grafting position, and enter in helical cavity raceway, the U-shaped channel of embedded circulator is extended into the rolling of the helical cavity in nut
Road, thus in process, without grafting position (nut stream ball mouth) and embedded circulator to nut grafting tang into
Capable polishing deep processing repeatedly is simultaneously modified, and need only set the grafting position in the smooth extension channel with corresponding grafting tang front end
It is connected to each other, the U shape channel of embedded circulator is extended into the helical cavity raceway in nut by smoothly extending channel
It is interior, the more easily assembling of the embedded circulator, nut stream ball mouth and circulator are realized without finishing, are saved working hour, are mentioned
High efficiency reduces dust, benefit and environmental protection.
Further, the two sides of the length direction of the loop body 211 are respectively provided with a limit track 22, Yi Jiyu
The shackle member 23 that the limit track 22 connects
It is equipped in the insertion groove 11 corresponding with the limit track 22 of the embedded 2 length direction two sides of circulator
Insertion detent 14；
When the embedded circulator 2 is embedded in the nut body 1, the shackle member 23 on the limit track 22 is caught in institute
Insertion detent 14 is stated, the limit track 22 and the outer rim of the insertion detent 14 are docked.
It is above-mentioned, it is limited on nut body 1 to ensure that embedded circulator 2 is capable of fixing, in the present embodiment, the two of circulator
A limit track 22 and shackle member 23 is respectively arranged in side position, and shackle member 23 is connect with limit track 22, and shackle member 23 can be card
Extension bar, and be embedded in groove 11 and be provided with corresponding insertion detent 14, when assembling to circulator, limit track 22 is docked
It is such as embedded in detent 14, and the clamping of shackle member 23, as in insertion detent 14, the outer rim of limit track 22 and insertion detent 14 is real
Now dock.It is clamped by the cooperation of limit track 22 and shackle member 23 and insertion detent 14, to be realized to circulator further
Fixation and limit, improve installation after stability.
Further, the embedded circulator 2 further includes the assembling 24 in the loop body 211；
Each embedded circulator 2 includes two assemblings 24, is respectively arranged on the length of the loop body 211
The two sides in direction are spent, and are connect with the limit track 22.
Above-mentioned, in the present embodiment, circulator is detachable device, when being mounted in corresponding insertion groove 11, for side
Convenient for the dismounting of user, need to be arranged one or more handgrip parts.In the present embodiment, by the two sides of loop body 211
An assembling 24 is respectively arranged in end face, and in order to which user is by the assembling 24 by holding two sides, convenient installation and removal should
Circulator.
Further, it in the insertion groove 11 of the nut body 1, is additionally provided with every with the embedded circulator 2
The corresponding dismounting position 15 of a assembling 24.
Above-mentioned, in order to keep circulator easy to disassemble, in the present embodiment in insertion groove 11 position corresponding with assembling 24
It sets, is additionally provided with dismounting position 15, is convenient to user for finger or related tool and gos deep into the position, thus more easily for circulation
The dismounting of device.
Further, axial direction of the independent closed circuit around the screw axis each of in the nut body 1
The circle number of center convolution is at least 3 circles.
Above-mentioned, in the nut of traditional ball screw assembly, generally one start screw, the axial centre around screw axis rotate
Circle number be generally 3 circles, to reach certain load effect, it is necessary to have certain circulating ring numbers, but if circle number it is excessive,
It will cause the length of the nut body 1 of ball screw assembly, is too long, thus in the case where the length of lead screw shaft 3 is certain, nut body 1
Length is too long to shorten for its stroke distances in the axial movement of lead screw shaft 3, causes linear for converting rotational motion to
Movement, or the movement that torque is converted into axial repeated action power is caused into tremendous influence.
It, will in the present embodiment to solve the problems, such as that the circulating ring number of conventional ball lead screw pair cannot be taken into account with stroke distances
Circulator is set as 2, and is separately positioned on the outer end face two sides of nut body 1, and it is independent that each circulator is individually composed one
The circulation loop of ball, screw axis of each circulation loop around center are at least 3 circles, then two circulation loops form at least 6 circles
Circulating ring number, to make circulation loop by one in existing lead screw pair on the basis of the axial length of nut body 1 is certain
It is a to become two independent circulations, and each circulation loop has the circulating ring number of independent at least 3 circle, is guaranteeing spiral shell
Load capacity is substantially increased on the basis of 1 length of parent, reduces torque, is able to achieve fast pulldown or positioning.
In addition, the long waist type circulator includes two symmetrically arranged group of cappings being detachably connected；Each described group
Capping includes symmetrical lid ontology, is equipped with a U-lag in the lid ontology；And two intrinsic U-lags of lid are mutually fitted
Match, after two described group of capping assemblings merge, two U-lag docking form the U-shaped channel.
Be respectively equipped in two group cappings 25 U-lag a 21a, two U-lag 21a be also it is arranged symmetrically, in two groups
After capping 25 is docked, internal U-lag 21a merges, and forms U-shaped channel 111.The long waist shaped circulator provided in the present embodiment,
Not only to be detachably connected between nut, and itself is also detachable；When being dismantled, one point is separated by centre
It is two, obtains two symmetrical group cappings 25, the maintenance replacement for internal ball etc. maintenance work can be carried out, for for silk
The secondary whole maintenance work of thick stick provides convenience.
In addition, group capping 25, is being different from U-lag 21a, and the end face with symmetrical group 25 abutting direction of capping, is being equipped with
Clamping apparatus；
The clamping apparatus may include that a docking recess 26 and one docks raised plug connector 27；Wherein, docking protrusion is inserted
The size of fitting 27 is adapted with the intracorporal space size of the chamber of docking recess 26；Also, it in each group of capping 25, sets respectively
Have one for docking docking recess 26 and connect raised plug connector, and it is slotting with the protrusion in the group capping 25 docked on opposite
Fitting and 26 position of docking recess and docking target match.
As in A group capping 25, upper end is equipped with raised plug connector, and lower end is equipped with docking recess 26；And in B group capping 25,
Corresponding with A group capping 25, upper end is docking recess 26, and line segment is raised plug connector.By distinguishing in two group cappings 25
The docking recess 26 that adaptation grafting can be corresponded to and raised plug connector are set, sets so as to avoid grafting position 131 and is followed caused by mistake
The problem of the damage of ring device or inconvenient maintenance installation inconvenience.On the other hand, two group cappings 25 pass through symmetrically arranged raised grafting
The docking of part and docking recess 26 further makes the connection between two group cappings 25 even closer, improves 25 groups of group capping
Stability after dressing up circulator, avoid the connection of removable circulator it is closed it is not tight, not tight caused by circulator using
Failure problems in journey.
In addition, the application also provides a kind of multi-cycle high load ball screw assembly, including lead screw shaft 3 with reference to Figure 11-13,
And the embedded interior circulation ball nut as described above on the screw axis is set to by ball sleeve.
Above-mentioned, multi-cycle high load ball screw assembly, can be prepared by following preparation method, comprising:
S1 carries out 1500 degrees Celsius to raw material and is heat-treated and examines,
S2 carries out cold roll forming to screw rod circle-arc screw-thread；
S3 is ground screw rod circle-arc screw-thread outer circle；
S4, production and grinding screw rod centre bore on the basis of the screw rod circle-arc screw-thread outer circle being ground；
S5, using the screw rod circle-arc screw-thread outer circle being ground as positioning datum, centre bore is that auxiliary base is ground screw rod circle
Arcuate thread raceway；
S6, subzero 80 degree of low temperature agings are handled and are examined；
S7 roughly grinds nut rolling way；
S8 prepares embedded circulator；S9, assembly, running-in, inspection.
In the description of this specification, reference term " embodiment ", " some embodiments ", " an implementation
The description of example ", " some embodiments ", " example ", " specific example " or " some examples " etc. means to combine the embodiment or example
Particular features, structures, materials, or characteristics described are included at least one embodiment or example of the invention.In this explanation
In book, schematic expression of the above terms be may not refer to the same embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more of the embodiments or examples.
The above content is specific embodiment is combined, further detailed description of the invention, and it cannot be said that this hair
Bright specific implementation is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, it is not taking off
Under the premise of from present inventive concept, a number of simple deductions or replacements can also be made.
Claims (9)
1. a kind of embedded interior circulation ball nut, applied to by the lead screw shaft of ball fitting characterized by comprising
One nut body and two embedded circulators being connect with the nut body；
Both ends symmetric position is respectively equipped with insertion groove on the nut body outer peripheral surface；The size of the embedded circulator and institute
The size for stating insertion groove is adapted, and can be embedded in the insertion groove；
Edge is axially arranged with nut thread slot corresponding with the threads of lead screw slot of lead screw shaft periphery on the nut body inner peripheral surface；
The nut thread slot can cooperate with the threads of lead screw slot to be docked, and independent two helical cavities for ball moving are formed
Raceway；
Each embedded circulator is connected to the corresponding helical cavity raceway, is formed independent around the screw axis
The closed circuit of axial centre spiral moves back and forth on length direction in order in screw axis rotation, the nut body
It is moved back and forth on the length direction of the screw axis, wherein the ball in each circulator is closed back corresponding
Shuttling movement in road.
2. embedded interior circulation ball nut as described in claim 1, which is characterized in that be equipped with and supply in the embedded circulator
The U-shaped channel of the ball moving；
After the screw axis and nut body assembly, the U-shaped channel is connected to the corresponding helical cavity raceway, composition
Independent closed circuit.
3. embedded interior circulation ball nut as claimed in claim 2, which is characterized in that
The embedded circulator includes loop body；The both ends of the loop body length direction are respectively provided with one relative to described
Loop body extends grafting tang outstanding；
The ball channel for rolling the pearl shuttling movement is equipped in the loop body；The grafting tang and the ball channel
Connection, forms the U-shaped channel；
Grafting position corresponding with each of the embedded circulator grafting tang is equipped in each insertion groove；
When the embedded interior circulation ball nut and the lead screw shaft assemble, the embedded circulator is embedded in the insertion
In formula on circulation ball nut, the grafting tang grafting enters the corresponding grafting position of the insertion groove, in order to the U-shaped
Channel is connected to the corresponding helical cavity raceway.
4. embedded interior circulation ball nut as claimed in claim 3, which is characterized in that
Smooth extension channel is also connected in each grafting tang front end；
The smooth opening direction phase for extending channel of two grafting tangs in each embedded circulator
Difference；
In ball when shuttling movement in the internal U-shaped channel, before the grafting tang of two of the embedded circulator
The smooth extension channel at end is docked with grafting position described at the helical cavity raceway corresponding two respectively, the grafting tang
Smooth extension channel can receive the ball in the helical cavity raceway as process mouth, or release ball to institute as backhaul mouth
State helical cavity raceway.
5. embedded interior circulation ball nut as claimed in claim 4, which is characterized in that
The two sides of the length direction of the loop body are respectively provided with a limit track, and the card connecting with the limit track
Fitting；
Insertion corresponding with the limit track of the embedded circulator length direction two sides is equipped in the insertion groove to block
Position；
When the embedded circulator is embedded in the nut body, the shackle member on the limit track is caught in the insertion card
Position docks the limit track and the outer rim of the insertion detent.
6. embedded interior circulation ball nut as claimed in claim 5, which is characterized in that
The embedded circulator further includes the assembling in the loop body；
Each embedded circulator includes two assemblings, is respectively arranged on the two of the length direction of the loop body
Side, and connect with the limit track.
7. embedded interior circulation ball nut as claimed in claim 6, which is characterized in that
In the insertion groove of the nut body, it is additionally provided with corresponding with each of the embedded circulator assembling
Dismount position.
8. embedded interior circulation ball nut as claimed in claim 7, which is characterized in that
In the intracorporal each independent closed circuit of the nut around the circle number of the axial centre spiral of the screw axis
It is at least 3 circles.
9. a kind of multi-cycle high load ball screw assembly, which is characterized in that including lead screw shaft, and by ball sleeve set on described
On screw axis such as the described in any item embedded interior circulation ball nuts of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910722104.6A CN110375048A (en) | 2019-08-06 | 2019-08-06 | A kind of embedded interior circulation ball nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910722104.6A CN110375048A (en) | 2019-08-06 | 2019-08-06 | A kind of embedded interior circulation ball nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110375048A true CN110375048A (en) | 2019-10-25 |
Family
ID=68258107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910722104.6A Pending CN110375048A (en) | 2019-08-06 | 2019-08-06 | A kind of embedded interior circulation ball nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110375048A (en) |
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