Indexing tables rotate a workpiece or assembly through a series of fixed stations, with each indexing move needing to land precisely at the same position cycle after cycle across potentially millions of cycles over the equipment’s service life. Positioning drift that would be tolerable in many applications compounds into real production quality issues on an indexing table, where each station’s tooling and processes assume the workpiece arrives at exactly the same point every time.
Ever-Power’s PC+NMRV helical-worm series is specified into indexing table applications across Australian manufacturing and assembly automation, where the combination of low backlash, self-locking station holding, and compact right-angle output suits this demanding positioning duty. This page covers the technical fit for indexing table drives, three manufacturing facility deployments, and answers to specification questions from equipment designers.
| Indexeringstabellens efterfrågan | PC+NMRV-designrespons |
|---|---|
| Konsekvent stationsposition över miljontals cykler | Spiralformad förstegskonstruktion med lågt glapp minimerar ackumulering av positioneringsfel |
| Positionshållning medan stationsprocesser pågår | Självlåsande snäckutgångssteg håller stationen utan kontinuerligt servovridmoment |
| Snabb indexering mellan stationer | Helical stage’s higher input speed compatibility supports fast indexing motion |
| Kompakt fotavtryck under bordet | Rätvinklig utgångskonfiguration passar typiska monteringskuvert för indexeringsbord |
Smärtpunkt: Ett indexeringsbord för flera stationer visade gradvis positioneringsavvikelse över längre produktionsserier, vilket kan spåras till ackumulerat glapp i den ursprungliga drivmekanismen.
Lösning: PC071+NMRV050-ersättning som levererade bekräftad prestanda med lågt glapp, bibehöll en konsekvent stationspositionering över längre produktionskampanjer.
Resultat: Positioneringskonsekvens bibehålls över efterföljande högvolymsproduktioner efter uppgraderingen.
Smärtpunkt: Ett indexeringsbord för elektroniktestning behövde snabbare cykeltid från station till station för att möta en ökning av produktionshastigheten, utan att kompromissa med den utrustning för testning av positioneringsnoggrannhet som krävdes.
Lösning: PC063+NMRV040 specified for servo compatibility supporting the faster cycle rate while maintaining the table’s required positioning tolerance.
Resultat: Increased production cycle rate achieved while maintaining the testing station’s positioning accuracy requirement.
Smärtpunkt: A precision machining facility’s rotary workholding indexer needed exceptionally reliable station holding during cutting operations, where any drift would directly affect part accuracy.
Lösning: PC080+NMRV075 specificerad för kombinationen av positionering med lågt glapp och bekräftad självlåsande fasthållning under bearbetningscykeln.
Resultat: Consistent part accuracy maintained across the indexer’s production schedule following installation.
| 🏭 Manufacturing Precision — over two decades of production experience extended across both gear stages of the helical-worm combination series |
| 📡 Indexing Application Engineering — confirm the correct combination against your station count, cycle rate, and positioning tolerance requirements |
| 🔧 New Equipment Design Support — OEM configuration options for indexing table manufacturers developing new equipment |
| 💰 Factory Direct Pricing — competitive cost from prototype development through to full production manufacturing volumes |
The helical pre-stage’s lower inherent backlash compared to a worm-only input reduces the rate of positioning error accumulation over extended service life. Actual long-term accuracy depends on your specific load, ratio, and duty cycle — we can discuss expected performance characteristics for your application during specification.
The gearbox itself drives the table’s rotational positioning; the number of index stations is determined by your table and tooling design rather than the gearbox. Provide your station count and required index angle per cycle, and we will confirm the appropriate ratio for your specific indexing pattern.
Yes, the NMRV worm output stage’s self-locking behaviour above the standard ratio threshold holds the table in its indexed position without requiring continuous servo holding torque, which is valuable during station operations like machining or precision assembly where positional stability matters.
Achievable cycle rate depends on your specific ratio, servo motor capability, and the table’s mechanical design including inertia and required index angle. Provide your throughput target and table specifications, and we will confirm whether your target cycle rate is achievable with the appropriate gearbox configuration.
Ja, vi stöder utrustningsdesigners från initial koncept- och prototyputveckling till full produktionstillverkning, och upprätthåller konsekventa specifikationer allt eftersom er design mognar. Engagera vårt team tidigt i er designprocess för det mest effektiva integrationsstödet.
PC+NMRV units typically carry a higher unit cost than standard NMRV due to the additional helical stage, reflecting the improved backlash and efficiency performance. Whether this premium is justified depends on your specific positioning tolerance and cycle rate requirements — we can advise on whether your application genuinely needs the helical-worm combination or whether standard NMRV meets your needs at lower cost.
Utforska hela sortimentet av spiralformade snäckor på vår PC+NMRV-seriens sida, eller bläddra bland andra automatiseringsapplikationer på vår applikationssida.
NRV Worm Gearbox for Parking Barrier and Gate Drives Parking barriers and automated gates cycle…
PC+NMRV Helical-Worm Gearbox for Factory Automation Positioning Systems Factory automation positioning systems — indexing tables,…
NMRV Worm Gearbox for Elevated Work Platform Actuators Positioning actuators on elevated work platforms —…
NMRV Worm Gearbox for Roller Shutter and Door Drives Roller shutters and sectional doors need…
PC+NMRV Helical-Worm Gearbox for Automated Storage Retrieval Drives Automated storage and retrieval systems demand a…
NMRV Worm Gearbox for Roller Conveyor Systems Roller conveyor systems distribute drive across multiple rollers…