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Toote kirjeldus

                       Uss- ja rattarooliajam, mis ümbritseb eritellimusel valmistatud rattatootjate elementi, topeltkäivitusega, üks globoidne hammasratas, messingist mikrokomplekt, Delrin messingist roostevabast terasest ussivarustus

 

Ussvõllid ja käigukastid

Kui teil on käigukast, võite mõelda, milline on teie tarkvara jaoks parim ussvõll. Arvestada tuleb mitme asjaga, näiteks nõgusa kuju, keermete arvu ja määrimisega. See artikkel selgitab iga küsimust ja aitab teil valida oma käigukastile sobiva ussvõlli. Turul on saadaval mitu valikut, seega ärge kartke nende kohta lugeda. Kui olete käigukastide maailmas uus, lugege edasi, et saada lisateavet selle populaarse käigukasti tüübi kohta.

Nõgus kuju

The geometry of a worm gear varies significantly dependent on its manufacturer and its intended use. Early worms experienced a simple profile that resembled a screw thread and could be chased on a lathe. Later on, resources with a straight sided g-angle have been produced to make threads that had been parallel to the worm’s axis. Grinding was also developed to improve the complete of worm threads and lessen distortions that occur with hardening.
To decide on a worm with the appropriate geometry, the diameter of the worm gear must be in the identical unit as the worm’s shaft. After the fundamental profile of the worm equipment is decided, the worm equipment tooth can be specified. The calculation also involves an angle for the worm shaft to avert it from overheating. The angle of the worm shaft should be as near to the vertical axis as attainable.
Topeltümbrisega ussülekannetel seevastu pole ussi ümber olevat kurguava. Need on spiraalsed hammasrattad sirge ussivõlliga. Kuna ussi hambad on omavahel kontaktis, tekitavad nad märkimisväärset hõõrdumist. Erinevalt topeltümbrisega ussülekannetest on kurguvabad ussülekanded palju kompaktsemad ja suudavad hakkama saada väiksemate sajalistega. Neid on ka lihtne toota.
Erinevate ettevõtete ussiülekannetel on palju positiivseid külgi. Näiteks on ussiülekanded üks tõhusamaid meetodeid pöördemomendi suurendamiseks, kuigi madalama kvaliteediga materjale, näiteks pronksi, on raske määrida. Ussiülekannetel on ka minimaalne rikkeprotsent, kuna need võimaldavad projekteerimisprotsessis märkimisväärset mänguruumi. Vaatamata kahe spetsifikatsiooni erinevustele on ussiülekandesüsteemi üldine efektiivsus sama.
Koonusekujuline uss on teine ​​variant. See on tehnoloogiline plaan, mis ühendab sirge ussivõlli nõgusa kaarega. Nõgus kaar on samuti väärtuslik utilis toode. Selle kujuga ussidel on korraga rohkem kui kolm kontakti, mis tähendab, et nad saavad vähendada suurt läbimõõtu ilma liigse kulumiseta. See on ka suhteliselt odavam disain.

Keerme muster

A great worm equipment demands a best thread sample. There are a couple of key parameters that establish how good a thread sample is. First of all, the threading pattern must be ACME-threaded. If this is not possible, the thread must be made with straight sides. Then, the linear pitch of the “worm” have to be the identical as the round pitch of the corresponding worm wheel. In simple conditions, this signifies the pitch of the “worm” is the same as the round pitch of the worm wheel. A fast-change gearbox is normally used with this variety of worm equipment. Alternatively, direct-screw modify gears are used instead of a rapid-modify gear box. The pitch of a worm equipment equals the helix angle of a screw.
A worm gear’s axial pitch should match the round pitch of a equipment with a larger axial pitch. The round pitch is the distance amongst the points of tooth on the worm, while the axial pitch is the distance among the worm’s teeth. One more factor is the worm’s lead angle. The angle amongst the pitch cylinder and worm shaft is referred to as its guide angle, and the larger the guide angle, the better the effectiveness of a equipment.
Ussülekande hammaste geomeetria varieerub olenevalt ettevõttest ja kavandatud kasutusest. Varasematel ussidel meenutas keermestamine kruvi keermestamist ja seda oli treipingi abil lihtne freesida. Hiljem parandas lihvimine ussi keermestamise viimistlust ja minimeeris kõvenemisest tingitud moonutusi. Seetõttu on tänapäeval enamiku ussülekannete keermemuster vastav nende suurusele. Ussülekande valimisel kontrollige enne ostmist kindlasti keermete arvu.
A worm gear’s threading is essential in its procedure. Worm tooth are typically cylindrical, and are arranged in a sample related to screw or nut threads. Worm tooth are often shaped on an axis of perpendicular when compared to their parallel counterparts. Because of this, they have greater torque than their spur gear counterparts. Furthermore, the gearing has a lower output speed and higher torque.

Keermete arv

Erinevat tüüpi ussülekannetel on planetaarülekannetel erinev keermete arv. Ühekeermelist ussülekannet ei tohiks kasutada koos kahekeermelise ussülekandega. Ühekeermelist ussülekannet tuleb kasutada koos ühekeermelise ussülekandega. Ühekeermelised ussid on kiiruse vähendamiseks palju võimsamad kui kahekeermelised tüübid.
The variety of threads on a worm’s shaft is a ratio that compares the pitch diameter and variety of teeth. In basic, worms have 1,2,4 threads, but some have 3, 5, or 6. Counting thread begins can support you establish the amount of threads on a worm. A single-threaded worm has less threads than a numerous-threaded worm, but a multi-threaded worm will have much more threads than a mono-threaded planetary equipment.
To measure the amount of threads on a worm shaft, a little fixture with two ground faces is used. The worm should be taken off from its housing so that the finished thread spot can be inspected. After pinpointing the quantity of threads, straightforward measurements of the worm’s outside diameter and thread depth are taken. When the worm has been accounted for, a forged of the tooth area is manufactured using epoxy substance. The casting is moulded amongst the two tooth flanks. The V-block fixture rests in opposition to the outside diameter of the worm.
The round pitch of a worm and its axial pitch have to match the circular pitch of a more substantial gear. The axial pitch of a worm is the length between the factors of the teeth on a worm’s pitch diameter. The lead of a thread is the distance a thread travels in 1 revolution. The direct angle is the tangent to the helix of a thread on a cylinder.
The worm gear’s velocity transmission ratio is based on the quantity of threads. A worm equipment with a high ratio can be easily decreased in 1 step by making use of a set of worm gears. Nevertheless, a multi-thread worm will have more than two threads. The worm equipment is also a lot more efficient than one-threaded gears. And a worm equipment with a higher ratio will let the motor to be used in a assortment of applications.

Määrimine

Ussülekande määrimine on selle hõõrdumise ja märkimisväärse libiseva kontaktjõu tõttu märkimisväärselt keeruline. Õnneks on määrdeainete osas palju valikuvõimalusi, näiteks segaõlid. Segaõlid on mineraalidel põhinevad määrdeained, mis on valmistatud kümne või enama osa rasvhapete, rooste- ja oksüdatsiooni inhibiitorite ning muude lisanditega. See segu parandab määrimisvõimet, vähendab hõõrdumist ja libisemiskulumist.
When selecting a lubricant for a worm shaft, make sure the product’s viscosity is proper for the kind of gearing utilized. A reduced viscosity will make the gearbox difficult to actuate and rotate. Worm gears also go through a better sliding motion than rolling movement, so grease should be in a position to migrate evenly through the gearbox. Repeated sliding motions will push the grease away from the get in touch with zone.
Veel üks asi, mida arvestada, on hammasrataste lõtk. Ussülekannetel on suuremad ülekandearvud, sageli 300:1. See on oluline jõuprogrammide jaoks, kuid samal ajal ebaefektiivne. Ussülekanded võivad libisemise ajal soojust tekitada, seega on oluline kasutada kvaliteetset määrdeainet. Selline määrdeaine vähendab kuumenemist ja tagab optimaalse toimivuse. Järgmised soovitused aitavad teil valida oma ussülekandele sobiva määrdeaine.
In minimal-velocity apps, a grease lubricant may be sufficient. In increased-velocity applications, it is very best to utilize a artificial lubricant to prevent premature failure and tooth dress in. In the two circumstances, lubricant selection relies upon on the tangential and rotational pace. It is critical to comply with manufacturer’s tips relating to the choice of lubricant. But don’t forget that lubricant selection is not an straightforward task.