CN104132097B - Ball worm and worm gear pair - Google Patents
Ball worm and worm gear pair Download PDFInfo
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- CN104132097B CN104132097B CN201410362839.XA CN201410362839A CN104132097B CN 104132097 B CN104132097 B CN 104132097B CN 201410362839 A CN201410362839 A CN 201410362839A CN 104132097 B CN104132097 B CN 104132097B
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- worm gear
- worm
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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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
- F16H1/163—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel with balls between the co-operating parts
-
- 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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/22—Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides four solutions in order to solve the problem about how balls circulate in ball worm and worm gear technological development. Circulation in a worm gear is performed in two ways; according to the first way, two circles of through holes are formed in the two sides of the worm gear, worm gear spiral grooves are connected with the axial through holes through arc-shaped guide tubes, independent circulating channels are formed by all the grooves, and the outer half portions of the outer ends of the guide tubes are manufactured to be in the shapes of arc-shaped hook teeth and stretch into the bottoms of worm spiral grooves so that the balls can be guided to circularly flow; according to the second way, the mechanism of the second way is similar to that of the first way, radial roller path grooves are additionally formed in the two sides of the worm gear through arc-shaped hook tooth guide disks so as to replace the guide tubes, the radial roller path grooves and the axial through holes form independent circulating channels of the grooves. The balls can circulate in a worm in two ways; according to the first way, radial holes in the opposite directions are formed in the spiral grooves in the two ends of a single-head toroid helicoids worm, the radial holes are connected with an axial hole obliquely penetrating through the center of the worm, and a circulating channel is formed through cooperation between guiding parts and adjusting parts; a multi-head toroid helicoids worm is similar to the single-head toroid helicoids worm, differently, the axial channel does not penetrate through the axis and is composed of two inclined holes. The two types of worms are provided with partition wheels so that the ball distance can be achieved, and sliding friction is avoided.
Description
Technical field
The invention belongs to mechanical transmission fields, the transmission being widely used between the axle of spatial intersecting two, motion can be subtracted
Speed or speedup, the most commonly retarded motion of crossed axis angle Σ=90 degree, trace is dispersed throughout among various all kinds of machineries, there is heavy type
Power is transmitted, and is also commonly used for the precision indexing transmission of machine-tool and precision instrument.
Background technology
In application in machine equipments widely, major advantage is stable drive to Worm and Worm Gear Driving, vibratory impulse very little,
Noise is very low, simple and compact for structure, and transmission speed ratio is big, and one time speed reducing ratio is generally 5～70, and maximum is up to hundreds of.
Worm geared major defect is：The force of sliding friction of worm screw thread and worm gear thread side is very in transmission process
Greatly, cause that heating fast, temperature rise, energy consumption be big, efficiency is low, be also the basic reason for causing Worm and Worm Gear Driving to fail.In order to protect
Worm geared advantage is stayed to overcome its shortcoming again, in recent decades, scroll techniques are applied to Worm and Worm Gear Driving by many people
In, polytype ball worn worm-drive mode is occurred in that, country is also granted by more than ten patent rights of inventor.
In the multinomial kind of drive having been proposed that, most merit attention or profile track groove is identical with existing worm gear pair
Ball worm gear pair, it is characterized in that the outer rim of worm and wormwheel is both provided with helicla flute, the normal section of groove is single circular arc, double circles
Arc, straight exterior feature groove（Also there is title trapezoidal）, worm screw profile has cylinder, also has anchor ring, and envelope mode has single envelope, also has double-contracting network.Together
The helicla flute sectional dimension of one secondary worm and wormwheel is identical, and notch aligns both during assembling, constitutes multi-detector pipe, is covered with pipe
Ball, both groove tops are distributed in ball center both sides, and worm screw is engaged by ball with worm gear, due to helical flank when worm screw rotates
Pushing effect, drive ball rotary rolling, when ball rotates in helicla flute, its axial movement component necessarily drive worm gear to do
Rotary motion, realizes in this way the rolling engaged transmission of worm and wormwheel, and its principle has points of resemblance with ball screw assembly, mesh
Though front without matured product, feasibility is very high, and chance of success is very big, and existing worm and wormwheel process equipment is also entirely capable of meeting need
Will.
It is more that current key issue is that the circulating reflux mode of ball has problems, and lacks practicality.Therefore, some are special
Though profit has announced the more than ten years to more than 20 years, practicality is put into yet so far, market is more without such commodity selling.
Several art solutions announced listed here are analyzed, discussion wherein ball-recirculation reflux type
Shortcoming and problem, this be also the present invention propose when directly facing background technology.
1. notification number：CN1403726A patent of invention ball worm gearing units
2. notification number：A kind of rolling ball worm gear transmission pair of CN102338195A patents of invention
3. notification number：CN2107567U utility model ball worns
4. notification number：CN1039090A patent of invention Worm drive with double-wrapped annular-surface balls
1. 2. two patents be all ball in worm gear interior circulation, both balls are all in worm wheel helical groove and two side cover plates
Half-round race groove and worm gear in axial hole composition passage inner circulating reflux, the except for the difference that end of the 1. item worm gear both sides
Lid profile is two and half circles, and the section of circle is spill half slot, and in the semicircle annular groove of whole circle quantity and worm gear spiral shell are radially divided into
The equal half slot of spin slot number, and mutually correspond to when assembling, worm gear both sides are then two convex light semi pivot circles, are in the middle of top surface
There are two row's axial holes helicla flute, worm gear both sides, and outer ring is through hole, and inner ring is half-round cross hole, and explanatory note inner ring is raceway hole, figure
Shape then clearly shows that outer ring is raceway hole.2. item both sides end cap be disc, a side plane of disk also is provided with semi-circular groove, snail
The ball-recirculation through hole of wheel is a row（Big part）Or two rows（Small-sized worm gear）, worm gear two sides itself also set up radially semicircle
Channel slot.
The technical scheme of above-mentioned two file has a disadvantage that：
First, difficult, production cost height is fabricated.Worm gear both sides and end cap all adopt half-arc groove processing time consuming, technique
Property it is not so good, particularly file 1. in end cap, shape is special, is again thin shell piece, also needs to be equipped with special process dress in production
Standby, production cost is high.Both require that end cap radial direction track groove outer end is alignd with worm wheel helical notch, in inner and worm gear axially
Raceway through hole is aligned, but after end cap is covered, these groove ends and axial raceway through hole are invisible, somewhat inclined one during assembling
Point can all cause ball to pass in and out obstacle.Equally, 2. worm gear both sides and end cap have radial radiation shape semicircle track groove, two halves to file
The shaped position error of circular groove necessarily may require that very tight, slightly deviation, or slightly misplace during assembling, and notch is unjustified, not into just
Circular hole, will cause ball flow obstacle, or even cannot flow.Also axial passage bore center require with worm gear center parallel,
But worm wheel helical groove center has a helical angle with worm gear center, therefore the both sides hole slot according to document design is affirmed to not going up.
2nd, usage range is strictly limited.The axial length for making worm gear is increased more by file technical scheme 1., then is added
Upper orthodrome end cap so that the existing worm gear of overall structure volume ratio adds much larger, and range of application can be affected.File side 2.
Disc end cap is only applicable to the circular arc zanjon raceway worm gear of this document setting in case（This circular arc zanjon raceway diameter and ball
Identical, groove depth is more than ball bearing radius, and opening is less than ball diameter）.It is not suitable for the ball worn snail with feature described in this case
Wheel set, because his disc end cap edge can only be reached at ball maximum gauge, it is impossible to be deep into worm spiral trench bottom, nothing
Method guiding ball-recirculation backflow.
4. 3. file be all scheme of the ball in worm screw interior circulation, and also all come with some shortcomings part, for example：3. file
Worm screw inner chamber also sets up some annexes, and ball circulation passages are excessively complicated, and transmission efficiency is adversely affected, and produce and process
Amount increase, also needs the fitted position for increasing worm screw diameter and one end.
From ball screw assembly, ball-screw and nut are that full circle connects to the first in file ball-recirculation mode 4.
Touch, and there are 3～5 row balls to carry simultaneously, the stand under load ball number proportion for being become rail by ball and being reduced is little, to lead screw pair
Bearing capacity affects very little, and the centrifugal force suffered by the ball on worm screw is unfavorable for becoming rail motion, this and ball-screw just phase
Instead, it is therefore necessary to reduce and become rail angle of inclination, increase becomes rail length, and the helicla flute on worm gear is very short, cause due to becoming rail
The reduction of bearing capacity can't neglect, and loops back pearl i.e. cannula type for second and the bearing capacity for causing is lost than the first also
Greatly, this is worm screw designer scheme beyond affordability.The third endless form is that keyed ball-returning device seems in theory preferably, but
Worm screw will be divided into worm set and worm screw two pieces, and worm screw diameter increases larger, and the rigidity of worm shaft is bad, the position of worm set and key
Put fixation not yet in effect.
Also some technical schemes are very high to the working speed of worm screw（Typically all in more than 1000r/min）Note not enough, rolling
The reliability of pearl shuttling movement, safety risks are larger, and also some design technologies are bad, and some even cannot be fabricated.
The existing patent of all balls circulating reflux in enveloping worm, all have ignored a material facts：Enveloping worm
Helicla flute is that two ends are big to the radius at worm screw center, middle little, therefore the linear velocity of ball movement is middle slow, two in groove
Hurry up.It is covered with ball before work in helicla flute, worm screw occurs this phenomenon when rotating：Ball before midpoint is more moved along speed
Degree is faster, if above unobstructed, the distance between ball is also more bigger forward；Conversely, because midpoint ball translational speed is most
Slowly, also should be that in the backward translational speed is faster after midpoint, but the stop for having above ball can not move forward, therefore after necessarily occurring
Half section of ball is close to extruding, and causes that pure rolling friction can not be realized between worm screw-ball-worm gear, and inevitable association slides and rub
Wipe, so as to increase energy consumption, reduce transmission efficiency.
The content of the invention
Present disclosure and purpose are aiming at the key technology in ball worn worm-drive --- and ball-recirculation is returned
Stream approaches and methods propose several simple structures, easy to process, safe and reliable scheme and measure, to meet different type
With the needs of purposes.
The technical scheme is that what is be achieved in that：A kind of ball worn worm gear, ball is by installed in worm gear two
Axially extending bore on the curved catheter and worm gear body of side is in worm gear interior circulation；There is conduit at each spiral fluted two ends on worm gear
It is connected with axially extending bore, constitutes independent ball circulation passages, the outer semicircle of external catheter end makes arc shaped hook dentation, extend into worm screw
Spiral trench bottom, ball under the influence of centrifugal force, can swimmingly enter curved catheter naturally, then warp beam enters opposite to through hole
Conduit, is finally back to worm wheel helical groove, completes circulating reflux；This kind of ball-recirculation reflux type is applied to anchor ring, cylinder snail
Wheel and straight-tooth, helical teeth planar worm gear；Teeth groove cross sectional shape can be single circular arc, bicircular arcs or straight exterior feature flute profile；When worm gear diameter too
Little, conduit cannot be welded with worm gear, or when needing consideration to be convenient for changing conduit and ball, can use platen interlayer cushion by conduit
Directly it is pressed abd fixed on worm gear, implementation procedure and main points are：It is with common glue that bonding catheter is in helicla flute port and axially logical
The junction in hole, adds one layer of cushion on conduit, then adds a platen on cushion, is pressed abd fixed in conduit by platen with screw
On worm gear；Platen is exactly a disk, and external diameter is slightly larger than the straight Jing that tubulature peak is constituted, endoporus and worm wheel aperture exterior circular column
Coordinate, the latter is concentric with worm wheel aperture, and cushion is an air ring, is made with oil resistant soft rubber or other Oil resistant elastomers, outward
Footpath is identical with platen external diameter, and internal diameter size covers long duct high point.
Further, conduit point long and short two kind, respectively with worm gear on helicla flute and the axial raceway through hole of inside and outside two circle
It is connected, is welded with gusset in conduit is curved, gusset can be welded with worm gear or is glued, and which substantially increases a connecting portion, plus
Strong ties intensity；The curvature of conduit is chosen by principle of the most easy smooth outflow of ball, and tubulature can be half annulus, long duct
Radius of curvature should be basically identical with tubulature, the outer semicircle of catheter proximal end for stretching into worm spiral groove makes arc shaped hook dentation；Lead
The aperture ratio ball diameter of pipe is slightly bigger.
Further, the axial raceway through holes of two circles have been set on worm gear, be staggeredly divided to be listed in two it is concentric with worm gear axle center
On circle, and the center of circle is on the line at worm wheel helical groove port center Yu worm gear center, and each through hole two ends is provided with and leads
The stepped hole and bevel for welding of pipe docking, port and the conduit connection of worm gear peripheral helicoid groove have also been made identical disposal, so as to
In the welding or splicing of conduit and worm gear.
A kind of ball worn worm gear, its ball is by arc briar tooth positioning disk, the radial direction raceway installed in worm gear both sides
Groove, tuning cambered surface, the circular passage of axial raceway through hole composition, realize in worm gear interior circulation；The each spiral fluted ball of worm gear
There is an independent circulation canal, the arc shaped hook number of teeth amount of positioning disk periphery is equal with worm wheel helical slot number, and crown is in spiral
On groove port center line；After worm and wormwheel assembling, arc briar tooth extend into worm spiral trench bottom, the planar annular of positioning disk with
The V-arrangement radial direction track groove of worm gear side constitutes the radial passage of ball, for ball by the way that without dropping out from the side, worm screw rotates
When, quickly along the movement of worm wheel helical groove while ball promotes worm gear to rotate with worm screw, after area is disengaged from, can be in centrifugal force
Under effect, the tangential direction along dispersal point camber line flies outward, and now arc briar tooth just can make the best use of the situation and successfully lead on ball
Enter circulation canal；This kind of ball-recirculation reflux type is applied to anchor ring, cylinder worm gear and straight-tooth, helical teeth planar worm gear；Teeth groove
Cross sectional shape can be single circular arc, bicircular arcs or straight exterior feature flute profile.
Preferably, the normal section of the radial direction track groove of worm gear both sides is the V-groove of Intermediate Gray escape, the straight exterior feature line of rabbet joint,
Divide long and short two kind, be radially distributed, length is staggered, and the outer end of radial direction track groove is docked with helicla flute port, radial tubes
The center line of road groove is inner to connect with axial raceway through hole on the line at helicla flute port center point Yu worm gear center, axially
Raceway through hole is divided to and is listed on two circles concentric with worm gear axle center, and the hole of outer ring is connected with minor axis to track groove, the hole on inner ring
Connect with long radial direction track groove, the center in hole（It should be the center in the hole of inner ring）In concentric round wires and radial direction track centre line
Intersection point on, worm wheel helical groove has a lead angle on worm gear, thus axial raceway through hole be not with worm gear diameter parallel
Inclined hole；Transition arc has all been made at helicla flute two ends and axial raceway through hole two ends.
Preferably, distributed on the circumference of the arc briar tooth positioning disk of worm gear both sides equal with worm wheel helical slot number
Arc briar tooth, the central authorities of positioning disk are big outer little constricted arc cones in, in arc briar tooth and constricted arc cone
Between be a planar annular；The planar annular of positioning disk constitutes the radial passage of ball with the V-arrangement radial direction track groove of worm gear side,
Axial raceway through hole can be entered under the guiding in arc tuning block in the ball that minor axis is moved into track groove, is radially rolled long
The ball moved in road groove can enter axial raceway through hole under the guiding of the constricted arc conical surface of positioning disk, from axially extending bore to
Up to after worm gear another side, the cambered surface tuning block of opposite positioning disk and the constricted arc conical surface guide ball to lead to along the radial direction on opposite
Arc shaped hook tooth of passing through before road enters the helicla flute of worm and wormwheel, completes to circulate；Arc briar tooth positioning disk is by processing method point
For machine cut processing type；With book plate punch forming.
The good effect that technical scheme is produced is as follows：
First, above-mentioned four kinds of ball-recirculation schemes, cover the demand of all kinds ball worn worm gear, can meet production
The needs for using；
2nd, the defect of existing sliding friction is avoided, complete high-quality rolling transmission is realized, to greatly improve ball
The transmission efficiency of worm and wormwheel, saving energy consumption have found a feasible approach.
3rd, four kinds of circulating reflux schemes, five kinds of structure types, with simple structure, production and processing is convenient, be not required to development increasing
Add any novel device, it is cheap for manufacturing cost.
4th, the use of completely left out a large amount of non-ferrous metal copper zinc-nickels, worm gear adopts completely price several times more cheap than copper alloy
Steel manufacture, production cost not only can be reduced, can also improve bearing capacity, increase the service life.
Description of the drawings
Fig. 1 is the installation diagram of conduct pipe type ball worn worm gear, and upper figure is front view, and figure below is top view.
In figure：1- worm screws, 2- balls, 3- worm gears, 4- outer protective covers, 5- tubulatures, 6- long ducts, axially long raceway leads to 7-
Hole, the axial short raceway through holes of 8-.
Fig. 2 is the worm gear of conduct pipe type ball worn worm gear, worm wheel helical groove is clearly indicated in figure and is axially rolled with ball
The position relationship of road through hole.
Fig. 3 is the curved catheter figure of conduct pipe type ball worn worm gear, point long and short two kind, it is curved in be welded with gusset, it is therefore an objective to
Increase connecting portion, strengthen bonding strength.It is that in order that ball-recirculation is more smooth, resistance is less using great circle curved catheter.
Fig. 4 is conduct pipe type ball worn worm gear another kind conduit fixed form, is mainly used in the inconvenient welding of conduit,
Or need adjustment in good time to change conduit, ball person, using this more flexible platen fixed form, simple and convenient reliability.
Fig. 5 is the platen in Fig. 4, is used for being fixed conduit.
Fig. 6 is cushion, is placed between conduit and platen, for the pressure suffered by equalizing conduit.
Fig. 7 is ball by being installed on arc briar tooth positioning disk, the radial direction track groove of worm gear both sides and the axle of worm gear both sides
To raceway through hole, the installation diagram of the ball worn worm gear in worm gear interior circulation is realized, be ball in the another of worm gear interior circulation
The mode of kind.
In figure：1- worm screws, 3- worm gears, 2- balls, 11- arc briar tooth positioning disks, 12- cambered surface tuning blocks, 13- tunings block is consolidated
Determine screw, the fixing screws of 14- arc briar tooth positioning disks, 4- outer protective covers.
Fig. 8 is the worm gear arrangement pattern figure in Fig. 7, and worm gear both sides radial direction track groove and axial raceway through hole are shown in figure
Position relationship and features of shape.
Fig. 9 is arc briar tooth positioning disk, for the guide for guiding ball-recirculation to flow back.There are two kinds of patterns.（a）It is machinery
Machining is molded part；（b）It is sheet stamping shaping.The former is applied to Single unit job lot production, and the latter is suitable for and produces in enormous quantities.
Figure 10 is No. 12 part cambered surface tuning blocks of Fig. 7, for guiding ball to exchange direction.
Figure 11 is that ball passes through ball worn worm gear application example-ball worn of the conduit in worm gear inner circulating reflux
Worm reduction gear, the major part marked in figure is 27- cabinet bases, 1- enveloping worms, 28- Worm Bearing lids, 3- worm gears,
29- worm-wheel shafts, 6- long ducts, 5- tubulatures, 4- outer protective covers（It is fixed by bolts on the right wall of casing）, 30- casing upper half
Portion, it is upper and lower two parts that casing is the horizontal plane subdivision being axially located from worm gear, primarily to be easy to assemble and keep in repair, 2- rollings
Pearl（Jing Precision Machinings and the steel ball of screening）, 31- bearing boxs, B1- Worm Bearings, a carrying radial load, B2- Worm Bearings,
Radial and axial load is carried, B3, B4- worm bearing only carries radial load, and B5- worm bearings carry bi-directional axial and carry
Lotus.Worm and wormwheel type belongs to anchor ring double-contracting network ball worn worm gear, and helical flute normal section is Gothic.
Specific embodiment
Embodiment one
A kind of ball worn worm gear, its ball is by the axial direction that is mounted on the curved catheter of worm gear both sides and worm gear body
Through hole is realized in worm gear interior circulation（Fig. 1）.It is characterized in that there are curved catheter, axial raceway in each spiral fluted two ends on worm gear
Through hole constitutes independent ball circulation passages, and the outer semicircle of external catheter end makes arc shaped hook dentation, extend into worm spiral trench bottom,
Ball under the influence of centrifugal force, can swimmingly enter curved catheter naturally, then warp beam enters opposite side conduit to raceway through hole,
Worm wheel helical groove is finally back to, circulating reflux is completed.
A kind of described ball worn worm gear, has set the axial raceway through hole of two circles on worm gear, be staggeredly divided to and be listed in two together
On heart circle（Fig. 2）.The purpose of so distribution is the installation connection for the ease of conduit on worm gear.The two ends of each through hole
The stepped hole and bevel for welding docked with conduit is provided with, is easy to the welding or splicing of conduit and worm gear, worm gear peripheral helicoid groove
Two ends and conduit connection have also been made identical setting.
Because the distance between helicla flute and axial raceway through hole have two kinds, it is therefore desirable to long and short two kind conduit（Fig. 3）, lead
The arc curvature of pipe with ball can most easy smooth outflow select as principle, tubulature can be semicircular ring, the curvature of long duct
Radius should be identical with tubulature, and the outer semicircle of catheter proximal end for stretching into worm spiral groove makes arc shaped hook dentation, so as to entering for ball
Go out to be oriented to.
Conduit has three kinds with the connected mode of worm gear, and the first is using welding；Second in the tranquil work of underloading low speed
Environmental work that high intensity may also be employed is gluing.It is curved interior below conduit in order to increase bonding strength（See Fig. 3）One piece of muscle of welding
Plate, gusset is connected again with worm gear.The third method is that platen is used above in conduit to be fixed on worm gear（Fig. 4）, save
The trouble that welded bands are come, but also increase a layer thickness.Working procedure and method are：1）Conduit glue is fixed on into docking position
Put, this only needs to common glue, A/C is to fill platen for convenience；2）Add an annular soft pad above conduit；3）By platen
（Fig. 5）Interlayer cushion compresses conduit, and tightening screw just can be fixed on worm gear.Both sides conduit is fixed with method.Cushioning
Effect be for equalizing conduit stress, in order to avoid occur due to conduit manufactured size deviation it is high be crushed out of shape, low no pressure
Tight phenomenon.Cushion can be made with oil resistant soft rubber or other Oil resistant elastomers.
Platen is exactly a disk, and external diameter is slightly larger than the straight Jing that tubulature peak is constituted, endoporus and worm wheel aperture outside cylinder
Body coordinates, and the latter is concentric with worm wheel aperture, and cushion is an air ring, is made with oil resistant soft rubber or other Oil resistant elastomers,
External diameter is identical with platen external diameter, and internal diameter size is advisable with covering long duct high point.
Ball is by way of conduit is in worm gear interior circulation, it is adaptable to cylinder, anchor ring worm gear and straight-tooth, the plane teeth of helical teeth
Worm gear, the cross section type of worm wheel helical groove can be single circular arc, bicircular arcs or straight exterior feature grooved etc..
The excircle of worm gear is provided with outer protective cover, it is ensured that ball is not dropped out, and protective cover is made up of two semicircular rings, wherein one
Individual semicircular ring is provided with breach, engages with worm gear so that worm screw enters, and protective cover can be fixed on bottom half（The vertical installation of worm gear）,
Or wall box is fixed on, for the horizontal installation of worm gear（See Figure 21）
Described above and 1～Fig. 6 of accompanying drawing both clearly illustrate that application catheter carried out the architectural feature of ball-recirculation backflow
With concrete endless form, the shape facility of component used, fixed form is installed, at the same also illustrate that according to different service conditions and
Several different embodiments that requirement can be taken.
Embodiment two
A kind of ball worn worm gear, its ball is by being installed on arc briar tooth positioning disk, the worm gear body of worm gear both sides
The inner cambered surface tuning block of the radial direction track groove of both sides and groove（Match with short radial slot）Or constricted arc cone cambered surface（With major diameter
Match to groove）, axial raceway through hole realized in worm gear interior circulation（Fig. 7）.It is characterized in that worm gear body has made radially rolling in both sides
Road groove（Fig. 8）.The normal section of groove is the straight exterior feature groove face of V-type of Intermediate Gray escape, and highly less than ball bearing radius, opening is less than spiral shell
The width of spin slot, point long and short two kind, is radially distributed.Length is staggered.The outer end of groove is connected with spiral notch, in groove
On the line in port center point Yu worm gear axle center, inner to connect with axial ball through hole, axial raceway through hole point is listed in heart line
On two circles concentric with worm gear axle center, the hole of outer ring is connected with minor axis to track groove, the Kong Yuchang radial direction track grooves on inner ring
It is connected, on the intersection point of concentric round wires and radial direction track centre line, worm wheel helical groove has a spiral liter on worm gear at the center in hole
Angle, thus axial raceway through hole be not with the inclined hole of worm gear diameter parallel.
Described arc briar tooth positioning disk is installed on worm gear both sides（Fig. 9）, circle distribution is with worm wheel helical slot number equal
Bending arc briar tooth, briar tooth central alignment helicla flute port center line, the center of positioning disk is big outer little arc in
Shape shrinks cone, is between the two planar annular, and the radial direction V-type rolling channel groove on planar annular and worm gear constitutes the radial direction of ball and leads to
The port of road, short radial passage and inner side axial direction raceway through hole is mounted with cambered surface tuning block, and long radial passage and inner side are axially rolled
The constricted arc cone of the tight-lipped patch positioning disk of road through hole end, the same location of worm gear opposite side also has said function part, this two pieces
Effect be to lead the axial raceway through hole of ball turnover.
Ball worn worm gear with said structure feature, when the worm rotates, driving force drives ball to promote worm gear
While rotation, ball is moved also along helix toward port, after ball departs from worm wheel helical groove region of engagement, in centrifugal force
Fly out along dispersal point circular arc tangential line direction under effect, now arc briar tooth has extend into the side of worm spiral bottom ball,
Just can make the best use of the situation successfully ball is imported into radial passage, Jing cambered surface tuning blocks（Figure 10）Or the constricted arc cone of positioning disk
Axial raceway through hole is led into, to be reached and enter radial passage under the guiding of aforementioned two function part after the other end in hole, so
Worm wheel helical groove is entered afterwards, completes the circulating reflux of ball.
The excircle of worm gear is provided with protective cover, it is ensured that ball is not dropped out, and protective cover is made up of two semicircular rings, one of them
Semicircular ring is provided with breach, engages with worm gear so that worm screw enters, and protective cover can be fixed on bottom half（Vertical output）Or it is solid
On wall box, for the horizontal installation of worm gear（See Figure 21）.
A kind of ball worn worm gear, ball passes through the arc briar tooth positioning disk of worm gear both sides in worm gear interior circulation,
Its arc briar tooth positioning disk circle distribution camber line briar tooth equal with worm wheel helical slot number（Fig. 9）, the spigot surface of positioning disk by
The arc briar tooth intrados of outer end, annular inner plane, the constricted arc cone composition of disk center.Production and processing is fairly simple, if
It is that Single unit job lot production can be manufactured according to Fig. 9 (a), blank may be cast as, machining turnning and milling can be completed；If relatively high-volume is raw
Producing can be molded by Fig. 9 (b) with sheet stamping, with low cost.
Mode of this kind of ball in worm gear interior circulation, it is adaptable to cylinder, anchor ring worm gear and straight-tooth, the plane teeth snail of helical teeth
Wheel, the cross section type of worm wheel helical groove can be single circular arc, bicircular arcs or straight exterior feature grooved etc..
Claims (3)
1. a kind of ball worn worm gear, it is characterised in that：Ball is by the curved catheter and worm gear sheet installed in worm gear both sides
Axial raceway through hole on body is in worm gear interior circulation；There are conduit and axial raceway through hole phase in each spiral fluted two ends on worm gear
Even, independent ball circulation passages are constituted, the outer semicircle of external catheter end makes arc shaped hook dentation, extend into worm spiral trench bottom,
Ball under the influence of centrifugal force, can swimmingly enter curved catheter naturally, then warp beam enters opposite conduit to raceway through hole, most
After be back to worm wheel helical groove, complete circulating reflux；This kind of ball-recirculation reflux type is applied to anchor ring, cylinder worm gear and straight
Tooth, helical teeth planar worm gear；Helicla flute cross sectional shape can be single circular arc, bicircular arcs or straight exterior feature flute profile；When conduit cannot be with worm gear
Welding, or when needing consideration to be convenient for changing conduit and ball, conduit is directly pressed abd fixed on worm gear with platen interlayer cushion,
Implementation procedure and main points are：Bonding catheter Jia one in helicla flute port and the junction of axial raceway through hole on conduit with glue
Layer cushion, then add a platen on cushion, with screw conduit is pressed abd fixed on worm gear by platen；Conduit point long and short two
Kind, platen is exactly a disk, the straight Jing that peak of the external diameter slightly larger than tubulature in worm gear axial direction is constituted, endoporus and worm wheel aperture
Exterior circular column coordinates, and the latter is concentric with worm wheel aperture, and cushion is an air ring, with oil resistant soft rubber or other Oil resistant elastomers
Make, external diameter is identical with platen external diameter, internal diameter size needs that peak of the long duct in worm gear axial direction can be covered.
2. a kind of ball worn worm gear according to claim 1, it is characterised in that：Conduit point long and short two kind, respectively with
Helicla flute on worm gear and the axial raceway through hole of inside and outside two circle are connected, and are welded with gusset in conduit is curved, gusset and worm gear welding or
It is glued, which substantially increases a connecting portion, strengthens bonding strength；The curvature of conduit is with the most easy smooth outflow of ball as principle
Choose, tubulature is half annulus, and the radius of curvature of long duct should be basically identical with tubulature, stretches into the conduit of worm spiral groove
Semicircle makes arc shaped hook dentation outside front end；The aperture ratio ball diameter of long and short conduit is slightly bigger.
3. a kind of ball worn worm gear according to claim 1, it is characterised in that：The axial raceway of two circles has been set on worm gear
Through hole, is staggeredly divided to and is listed on two circles concentric with worm gear axle center, and the center of circle is in worm wheel helical groove port center and worm gear
On the line of the heart, each through hole two ends is provided with the stepped hole and bevel for welding docked with conduit, worm gear peripheral helicoid groove
Port is also all provided with stepped hole and the bevel for welding docked with conduit with conduit connection, in order to the welding of conduit and worm gear
Or be glued.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610413148.7A CN105889421B (en) | 2013-09-30 | 2014-07-29 | Ball worm gear pair |
| CN201410362839.XA CN104132097B (en) | 2013-09-30 | 2014-07-29 | Ball worm and worm gear pair |
| CN201610870164.9A CN106246805B (en) | 2013-09-30 | 2014-07-29 | Ball worn worm gear |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310456643.2A CN103615499A (en) | 2013-09-30 | 2013-09-30 | Ball worm gear pair |
| CN2013104566432 | 2013-09-30 | ||
| CN201310456643.2 | 2013-09-30 | ||
| CN201410362839.XA CN104132097B (en) | 2013-09-30 | 2014-07-29 | Ball worm and worm gear pair |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610870164.9A Division CN106246805B (en) | 2013-09-30 | 2014-07-29 | Ball worn worm gear |
| CN201610413148.7A Division CN105889421B (en) | 2013-09-30 | 2014-07-29 | Ball worm gear pair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104132097A CN104132097A (en) | 2014-11-05 |
| CN104132097B true CN104132097B (en) | 2017-05-10 |
Family
ID=50166212
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310456643.2A Withdrawn CN103615499A (en) | 2013-09-30 | 2013-09-30 | Ball worm gear pair |
| CN201610413148.7A Active CN105889421B (en) | 2013-09-30 | 2014-07-29 | Ball worm gear pair |
| CN201410362839.XA Expired - Fee Related CN104132097B (en) | 2013-09-30 | 2014-07-29 | Ball worm and worm gear pair |
| CN201610870164.9A Expired - Fee Related CN106246805B (en) | 2013-09-30 | 2014-07-29 | Ball worn worm gear |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310456643.2A Withdrawn CN103615499A (en) | 2013-09-30 | 2013-09-30 | Ball worm gear pair |
| CN201610413148.7A Active CN105889421B (en) | 2013-09-30 | 2014-07-29 | Ball worm gear pair |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610870164.9A Expired - Fee Related CN106246805B (en) | 2013-09-30 | 2014-07-29 | Ball worn worm gear |
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| Country | Link |
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| CN (4) | CN103615499A (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615499A (en) * | 2013-09-30 | 2014-03-05 | 李泰安 | Ball worm gear pair |
| CN106870677A (en) * | 2015-12-12 | 2017-06-20 | 熵零技术逻辑工程院集团股份有限公司 | One kind flowing drive mechanism body mechanism |
| CN105443661A (en) * | 2015-12-31 | 2016-03-30 | 刘国青 | Ball screw worm speed reducer |
| CN106499774B (en) * | 2016-12-29 | 2018-10-30 | 成都中良川工科技有限公司 | A kind of transmission decelerating device |
| CN106499775B (en) * | 2016-12-29 | 2020-06-16 | 成都中良川工科技有限公司 | Transmission speed reducer |
| DE102017200008B4 (en) * | 2017-01-02 | 2022-09-29 | Ford Global Technologies, Llc | Transmission unit for a motor vehicle |
| IT201700065267A1 (en) * | 2017-06-13 | 2018-12-13 | Mario Antonio Morselli | SCREW GEAR WITHOUT FINE. |
| CN110242704B (en) * | 2019-06-17 | 2021-10-22 | 成都中良川工科技有限公司 | Rolling friction-based transmission device and transmission method thereof |
| CN113090711A (en) * | 2021-04-01 | 2021-07-09 | 安俊堂 | 3D RWW type ball worm gear |
| CN114454033B (en) * | 2022-04-11 | 2022-07-05 | 天津德科智控股份有限公司 | Ball guide pipe and machining device |
| CN116067651B (en) * | 2023-03-07 | 2023-06-09 | 四川大学 | Test method of in-situ equivalent test system based on ball friction and motion |
| CN116214492A (en) * | 2023-05-09 | 2023-06-06 | 瑞基机器人有限公司 | Robot body joint pose adjusting structure |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2414141A1 (en) * | 1978-01-04 | 1979-08-03 | Luc Jacques | Worm and wheel speed reduction gear - has steel balls running in track tubes and grooves between teeth to reduce friction |
| DE2803459A1 (en) * | 1978-01-27 | 1979-08-02 | Guenter Koglin | Worm gear with recirculating balls - has kidney-form races enclosed by half shells to form worm wheel |
| FR2544824B1 (en) * | 1983-04-20 | 1988-07-29 | Ratier Figeac Soc | Worm gear reducer and toothed wheel |
| CN85104974B (en) * | 1985-06-28 | 1988-11-30 | 浙江大学 | Conduct pipe type ball worn |
| SU1411535A1 (en) * | 1985-12-17 | 1988-07-23 | Одесский Политехнический Институт | Worm gearing |
| CN86108414A (en) * | 1986-11-28 | 1988-06-08 | 郑家骏 | Worm screw and worm-gear drive with antifriction balls |
| CN87101958A (en) * | 1987-03-12 | 1988-09-21 | 周三民 | The worm drive of circulation ball |
| SU1481538A1 (en) * | 1987-07-15 | 1989-05-23 | Предприятие П/Я А-3590 | Worm-ball gearing |
| JPH06249295A (en) * | 1993-02-25 | 1994-09-06 | Hiroshi Toyomasa | Drive transmitting device |
| CN103615499A (en) * | 2013-09-30 | 2014-03-05 | 李泰安 | Ball worm gear pair |
-
2013
- 2013-09-30 CN CN201310456643.2A patent/CN103615499A/en not_active Withdrawn
-
2014
- 2014-07-29 CN CN201610413148.7A patent/CN105889421B/en active Active
- 2014-07-29 CN CN201410362839.XA patent/CN104132097B/en not_active Expired - Fee Related
- 2014-07-29 CN CN201610870164.9A patent/CN106246805B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106246805A (en) | 2016-12-21 |
| CN105889421A (en) | 2016-08-24 |
| CN106246805B (en) | 2018-05-22 |
| CN104132097A (en) | 2014-11-05 |
| CN103615499A (en) | 2014-03-05 |
| CN105889421B (en) | 2019-01-11 |
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Effective date of registration: 20201223 Address after: 224300 Xinxing Industrial Park, CHANGDANG Town, Sheyang County, Yancheng City, Jiangsu Province Patentee after: YANCHENG JIEJING TECHNOLOGY Co.,Ltd. Address before: 450053 3003a, unit 1, building 5, yard 16, shengchan Road, Zhengzhou City, Henan Province Patentee before: Li Taian |
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