Gear Production: Higher Speed, Closer Precision

NUM Corporation（Napierville，IL）为齿轮生产机器提供了高性能CNC解决方案，可以完全自动化螺纹轮磨削。采用独特的高速齿轮对准技术，被认为是比可比控制方案快的数量级，新的CNC系统显着减少了磨削机线程，以便显着加速吞吐量。

这种全面的新解决方案是寻求提高齿轮生产机器性能的机床制造商的理想选择，或帮助公司使用螺纹轮磨床扩展其齿轮制造范围。

Based on the new-generation Flexium+ CNC platform, the threaded wheel grinding solution joins the company’s NUMgear suite of gear production software. Originally developed for gear hobbing applications, the capability of this software has been continually extended and now includes solutions for a broad range of gear manufacturing processes, including shaping, grinding and honing, and is used by many of the world’s foremost manufacturers of gear production machines.

The latest addition to the NUMgear portfolio was developed when helping an Asian gear manufacturing machine tool company to improve the performance of a prototype threaded wheel grinder. To improve grinding speed compared with current levels, NUM decided it needed to develop custom technology software. The principal aims were to reduce the time overhead of learning the teeth positions of the hardened gear prior to grinding, and improve the accuracy of the gear grinding process.

MODUL CNC霍尔伯配有NUM数字CNC和驱动器和NUMGEAR会话控制的示范。

新系统为齿轮制造机提供全面的CNC解决方案。在系统的核心是一个高性能的电子齿轮箱，允许所有主轴 - 如磨削，x，y和z轴 - 以及螺型（c轴）完全同步。作为新型螺纹轮磨机的开发工作的一部分，齿轮箱中的主要功能已被添加到齿轮箱中，现在能够预测轴的加速以及它们的速度，以便最小化同步时间。与快速齿轮校准一起，形成新的Numgear螺纹轮磨削应用的一部分。

During gear production, ‘threading-in’ – the process of bringing the grinding wheel into contact with the gear blank – involves continuously adjusting the position of the grinding wheel relative to the work piece. A similar process is employed when bringing the machine’s dressing wheel into contact with the grinding wheel. Using acoustic emission sensors to learn the sound signatures of a master gear and then using them to control positioning during production runs is a common technique for automating processes like this.

然而，新开发的快速齿轮对准功能的速度和准确性完全消除了这一点。例如，将砂轮与180mm直径齿轮的齿轮对准，具有71螺旋齿只需占0.5秒 - 而无需获取声学签名或进行手动调整。

A second aim of this development required that the gear grinder CNC control should generate gears as accurately as possible. The latest machine from the Asian company produced gears with a tooth profile quality of DIN class 7. During the development process, NUM found that the diamond plated dressing wheel did not come up to specification.

为了克服这个问题而没有产生重大的工具成本，Num决定通过帮助修改技术计划来支持客户。这种行动的积极结果远远超过预期，解决方案可以帮助机器将齿轮齿型材延伸到3.5微米内，舒适地实现DIN类3 - 改善四类水平。

The latest gear grinding development is an example of how NUM customizes its CNC technology for machine makers and supports this with a decentralized R&D structure which locates engineering staff around the world to allow it to work closely with machine builders. In this case, the new gear grinding solution was jointly developed by NUM’s headquarters in Switzerland and the company’s technology center in Chanzhou, China, which is close to many major gear manufacturing machine builders and is currently undergoing major expansion.

根据Num Group的首席执行官PeterVonRüti的说法，“Num致力于帮助客户通过密切伙伴关系开发市场领先的机器。“我们的当地业务和直接与客户一起工作以解决技术问题的愿意，非常迅速提供具有关键竞争优势的双方。”

Num是CNC市场中最长的历史参与者之一，1961年推出了其第一个数字控制器。由于亚洲制造商逐步提高了机器的能力和质量，亚洲的扩展已成为NIM的承诺。为了支持这一发展，Num目前在其亚洲基础设施中进行了重大投资，包括最近在2010年开业的陈汉族，韩国的新区域支持中心开放，并于2010年开业。

VonRüti指出，欧洲市场很有前景。“我们为不同机器创建个人解决方案的能力提供了中型厂商，具有巨大的竞争优势。我们的系统的开放和灵活性和我们的分散的开发结构，结合了客户的专业化，提供了独特的市场机会。我们欢迎有机会参与新项目。“