CS229409B1 - Worm wheel with polishing effect - Google Patents
Worm wheel with polishing effect Download PDFInfo
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- CS229409B1 CS229409B1 CS835581A CS835581A CS229409B1 CS 229409 B1 CS229409 B1 CS 229409B1 CS 835581 A CS835581 A CS 835581A CS 835581 A CS835581 A CS 835581A CS 229409 B1 CS229409 B1 CS 229409B1
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Abstract
Vynález popisuje leštenie zubov zévitoviek závitovkových prevodovzávitovkovým kolesom, ktoré má na svojej funkčnej ploché zubov vrstvu 0,1 až 4 mm plastickej hmoty na báze epoxidovej živice, plnenej do obsahu 30 až 50 % práškovým brusivom (napr. SiC nebo Al .0,) o zrnitosti 0,01 až 0,2 mm.The invention describes the polishing of the teeth of worm gears with a worm wheel which has on its functional tooth surface a layer of 0.1 to 4 mm of epoxy resin-based plastic material, filled to a content of 30 to 50% with powdered abrasive (e.g. SiC or Al 2 O 2 ) with a grain size of 0.01 to 0.2 mm.
Description
Vynález sa týká závitovkováho kolesa s úpravou funkčných plfich zubov pre leStenie zubov zévitoviek.BACKGROUND OF THE INVENTION The present invention relates to a worm wheel with a functional tooth surface treatment for polishing the teeth of a tube.
Doteraz používaná závltovková převody majú zníženú účinnost a zvýSené opotrebenie zubov závitovkováho kolesa najviac třením na funkčných plochách zubov. Trenie a tým aj účinnost a životnost súkolesia v značnej miere závisia od drsnosti povrchu dotýkajúcich sa plčch v zóně záběrového pol'a, hlavně od drsnosti povrchu zubov závitoviek. Brúsením závitoví ek sa docieTuje drsnost povrchu zubov R* = (Um, ktorá vzhladom na okolnost, že nemožno v celom rozsahu záběrového póla dosiahnút súvislý mazací olejový film, vyvolává často značné opotrebenie zubov závitovkováho kolesa.The worm gears used hitherto have reduced efficiency and increased wear of the worm gear teeth by the most friction on the functional surfaces of the teeth. The friction and thus the efficiency and service life of the gear depend to a large extent on the roughness of the surfaces touching the plungers in the engagement zone zone, in particular on the roughness of the worm teeth. By grinding the screw, a roughness of the tooth surface R * = (µm) is achieved, which, due to the fact that a continuous lubricating oil film cannot be achieved over the entire engagement pole range, often causes considerable wear on the teeth of the worm wheel.
U nitridových zubov závitoviek sa najviac prejavuje aj negativny vplyv zhoršenia drsnosti povrchu po nitridácii, ktorý výrazné zvySuje opotrebovanie zubov bronzových vencov závltovkových kolies. Zabehávanie súkolesí a leStenie závitov pomocou brusnej pasty nie je dostatočne účinná a m8že vyvolávat značné nepřesnosti.In the case of worm nitride teeth, the negative effect of deterioration of the surface roughness after nitriding is also most pronounced, which significantly increases the wear of the teeth of the bronze rims of the cotter wheels. Gearing and thread polishing with abrasive paste is not efficient enough and can cause considerable inaccuracies.
Špeciálne zariadenia na leStenie vyžadujú vysoké náklady. DocieTovanie vysokej kvality povrchu zubov závitoviek je zatial’ celosvětovým problémem.Special polishing equipment requires high costs. Achieving the high quality surface of the worm teeth is a global problem.
Uvedené nedostatky v podstatnéj miere ódstraňuje zévitovkové koleso s leStiacim účinkom podl’a vynálezu, ktorého podstata spočívá v tom, že funkčné plochy zubov sú opatřené vrstvou 0,1 až 4 mm plastickéj lpnoty na báze epoxidovéj živice plnenej vo vztahu k celkovému objemu povlaku 30 až 50% práškovým brusivom napr. karbidom kremíka SiC, alebo kysličníkom hlinitým AlgO^ s veTkostou častíc 0,01 až 0,2 mm.The above-mentioned drawbacks are substantially eliminated by the polishing wheel according to the invention, which is based on the fact that the functional surfaces of the teeth are provided with a layer of 0.1 to 4 mm epoxy resin-based plastic filler filled in relation to the total coating volume of 30 to 50% powder abrasive eg. silicon carbide SiC, or alumina with a particle size of 0.01-0.2 mm.
LeStenie takto upraveným závitovkovým kolesom, ktoré sa stává nástrojom na leStenie zubov zévitoviek, umožňuje charakter záběru závltovkových súkolesí, ktorý prebleha vždy pri vysokých kízných rýchlostiach, pričom dotykové čiary zubov sa premiestňujú v zóně záběrového poTa. Povlak s pružné uloženým brusivom vplyvom viskoelastických vlastností sa prispčsobuje protiprofilu, čo umožňuje zníženie vrcholkov nerovnosti povrchu pri zachování geometrie pSvodného profilu, VzhTadom na kinematlku záběru leStiaceho nástroje.The polishing of the worm wheel thus treated, which becomes a tool for polishing the teeth of the slugs, permits the engagement of the cogwheels, which always takes place at high punch speeds, the tooth contact lines being displaced in the engagement zone. The flexible abrasive coating due to viscoelastic properties adapts to the counter-profile, allowing the peaks of surface irregularities to be reduced while maintaining the geometry of the conductive profile relative to the kinematic engagement of the polishing tool.
Pre zvýšenie intenzity je výhodné leStenie prevédzat pri kízných rýchlostiach 5 až 20 m/s pri zatažení súkolesia 1 až 10% výkonu, na ktorý je převod navrhovaný. Uvedený proces vyžaduje len Jcrátku dobu leštenia 1 až 2 min a umožňuje dosahovat strednú aritmetickú nerovnost RQ = 0,2 až 0,1 ^um. Ako příklad prevedenia povlaku s leštiácim účinkom možno uviest plastickú hmotu vytvorenú jcombinéciou 50% epoxidovej živice, 30% prášku karbidu kremíka SiC s veTkostou častíc 0,06 až 0,08 mm, ,0% prášku polytetrafluoretylénu a 10% práškového olova, kde poměry zložiek práškov sú objemové vo volné sypanom stave. Přídavky polytetrafluoretylénu a olova znižujú křehkost epoxidového povlaku, ktorý sa stává plastickejším a tým sa zvyšuje jeho životnost pri leštiacom procese.In order to increase the intensity, it is advantageous to carry out polishing at cross speeds of 5 to 20 m / s when the gear is loaded with 1 to 10% of the power to which the transmission is designed. The process requires only a polishing Jcrátku for 1-2 min and allows to achieve an average arithmetic roughness R Q = 0.2 to 0.1 .mu.m. Examples of polishing coatings are plastic formed by combining 50% epoxy resin, 30% SiC silicon carbide powder with a particle size of 0.06-0.08 mm, 0% polytetrafluoroethylene powder and 10% lead powder, where the component ratios are The powders are bulk in bulk. Additions of polytetrafluoroethylene and lead reduce the brittleness of the epoxy coating, which becomes more plastic and thereby increases its lifetime in the polishing process.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS835581A CS229409B1 (en) | 1981-11-13 | 1981-11-13 | Worm wheel with polishing effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS835581A CS229409B1 (en) | 1981-11-13 | 1981-11-13 | Worm wheel with polishing effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS229409B1 true CS229409B1 (en) | 1984-06-18 |
Family
ID=5433966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS835581A CS229409B1 (en) | 1981-11-13 | 1981-11-13 | Worm wheel with polishing effect |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS229409B1 (en) |
-
1981
- 1981-11-13 CS CS835581A patent/CS229409B1/en unknown
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