Rollon provides tips for long-lasting linear rails

照片由Rollon GmbH Lineartechnik

Designers sometimes try to cantilever a load in order to use a standard linear rail in unsupported areas. This approach may achieve a long load extension, but it comes at a price: bearing wear and overloading, especially when working with significant loads and cycles.

Telescopic rails can provide the reach and length designers need, but most are designed for manual, low-load and low-cycle applications such as filing cabinets and drawers. Heavy-duty manufacturing and automation applications require constant movement in demanding environments, so designers seeking accurate, long-lasting linear rails for unsupported loads must carefully examine the following considerations:

• Bearing construction:铝和盖章钢是常见的线性轴承材料，但它们缺乏承载重载或承受典型工业应用的振动的能力。由硬化的冷碳钢制成的轴承的特征是刚性高，即使在完全伸展的额定载荷时也可以最大程度地减少挠度。实际上，这种结构通常消除了用户在旅行后抵消挠度的需求。
• Raceway construction:Quality, hardened raceways are essential to providing consistent movement especially when vibration, impact or shock loads occur. Hardened raceways offer very high load capacities, and, therefore, longer life. Rollon uses induction-hardened 60 Rockwell C steel in its telescopic rail raceways in order to ensure long life and resist brinelling. The raceways are ground for a few microns to ensure rail accuracy and maintain hardness, and additional anti-corrosion treatments can be used to extend the life of the rail in corrosive environments.
• Precision:大多数望远镜系统都是缸体驱动的，只需几个接触点就可以满足应用的满足。但是，对于需要非常精确的运动（例如加载/卸载）的应用，按接送和拾取机器，伸缩皮带驱动的执行器可提供最佳控制。例如，Rollon的TLS100使用多个阶段以每秒高达4.4米的速度达到150％的笔触。这样可以建立一个快速，健壮的系统，该系统可以适合较小的空间，同时可以很好地控制机器的运动。使用皮带作为驾驶机构还可以使系统朝相反的方向望远镜，从而更具灵活性。

When designing a linear motion system for unsupported loads, not all linear solutions are the same. Be sure to consider the construction of the bearings and raceways along with the motion requirements. Although manufacturing costs may be higher, telescopic linear rails made from hardened, cold drawn steel and specially hardened railways can provide consistent heavy load movement at greater extensions over a longer lifetime.

For more information, please visithttp://www.rollon.com.

• CID:14661