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.
| インデックス表の需要 | PC+NMRV設計対応 |
|---|---|
| 数百万サイクルにわたる安定したステーション位置 | バックラッシュの少ないヘリカルプレステージにより、位置決め誤差の蓄積を最小限に抑えます。 |
| ステーション処理が行われている間、位置を保持する。 | セルフロック式ウォーム出力段は、連続サーボトルクなしで位置を保持します。 |
| 駅間の迅速なインデックス付け | Helical stage’s higher input speed compatibility supports fast indexing motion |
| テーブル下の設置面積はコンパクトです。 | 直角出力構成は、一般的なインデックステーブルの取り付け枠に適合します。 |
問題点: 複数ステーション構成の組立インデックステーブルにおいて、長期間の生産運転中に徐々に位置決めずれが発生していた。これは、元の駆動機構におけるバックラッシュの蓄積が原因であることが判明した。.
解決: PC071+NMRV050への交換により、低バックラッシュ性能が確認され、長期間の生産キャンペーン全体にわたって安定したステーション位置決めが維持されました。.
結果: アップグレード後の大量生産においても、位置決めの一貫性が維持された。.
問題点: 電子機器試験用インデックステーブルは、必要な位置決め精度試験装置を損なうことなく、生産量増加に対応するため、ステーション間のサイクルタイムを短縮する必要があった。.
解決: PC063+NMRV040 specified for servo compatibility supporting the faster cycle rate while maintaining the table’s required positioning tolerance.
結果: Increased production cycle rate achieved while maintaining the testing station’s positioning accuracy requirement.
問題点: A precision machining facility’s rotary workholding indexer needed exceptionally reliable station holding during cutting operations, where any drift would directly affect part accuracy.
解決: PC080+NMRV075は、低バックラッシュ位置決めと加工サイクル中の確実なセルフロック保持の組み合わせに対応するように指定されています。.
結果: 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.
はい、弊社は機器設計者の皆様を、初期コンセプトやプロトタイプ開発から本格的な量産製造まで、設計の成熟度に応じて一貫した仕様を維持しながらサポートいたします。最も効果的な統合サポートを受けるには、設計プロセスの早い段階で弊社チームにご相談ください。.
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.
当社のヘリカルワーム製品群をぜひご覧ください。 PC+NMRVシリーズページ, または、当社の他の自動化アプリケーションをご覧ください。 アプリケーションページ.
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