The standard diamond pen wheel dresser used in ordinary cylindrical grinders is capable of shaping the outer edge of the grinding wheel as well as rounded corners with a radius smaller than R10mm. However, when it comes to trimming larger fillets—those exceeding R10mm—the conventional dresser is no longer effective. This limitation arises because the bearing that holds the diamond pen cannot be too large, as it would otherwise cause interference between the rotating assembly of the dresser and the grinding wheel itself. For high-volume production, custom-made diamond rollers can be used to handle larger rounded edges. However, these diamond rollers are expensive and lack versatility, making them unsuitable for small batch or varied production runs. To address this challenge, we have developed a unique wheel dresser specifically designed for trimming larger-radius grinding wheel corners. The detailed structure is outlined below (refer to the attached drawing). **1. How the Device Works** The diamond pen (part 24) is mounted on a rotating shaft (part 21), and its position is adjusted based on the desired fillet size of the grinding wheel. During operation, the nut (part 5) is first loosened, allowing the handlebar (part 25) to rotate. This rotation drives gears (parts 9 and 11), which in turn rotate the shaft (part 21). Two bearings (part 20) are installed on the rotating shaft and slide within the annular groove of the guide plate (part 17). Once the arc of the grinding wheel is properly shaped, the nut (part 5) is tightened, enabling the outer circumference of the wheel to be trimmed accurately.

**2. Manufacturing Requirements** To ensure smooth and accurate operation, the precision fit between the two bearings and the annular groove on the rotating shaft must be strictly maintained. Due to slight gaps between the gears, a compression screw (part 3) and the bearing it supports are used to prevent the rotating shaft from spinning around its central axis. If this were not controlled, the diamond pen could vibrate or even become unstable during the trimming process, posing a risk to both the machine and the operator. The radius of the annular groove on the guide plate can be customized according to the range of fillet sizes needed. **3. Conclusion** This device has been successfully tested in real production environments and has proven to be highly effective. Its key advantages include low manufacturing and operational costs, broad applicability, ease of use, and a wide range of rounding capabilities. It allows for the trimming of large-radius grinding wheels while ensuring precise tangency between the rounded and flat sections of the wheel. This makes it an ideal solution for small to medium batch production, offering practicality, efficiency, and reliability in various industrial settings.

FRP Gratings

FRP rain gratings are made of composite materials; we make the FRP gratings on BS EN124, Mainly our products are A15, B125, C250 and D400. For A15, B125, C250 and D400 FRP rain gratings to be used in Green belt, Pavement, Auxiliary road, Main road and Express way. We make our FRP gratings all by press, the quality is very good, and we warmly welcome customers all over the world to do business with us.


Frp Gratings Size 335x825 D400 Jpg

Frp Gratings 340x680 B125

Grating, Gully gratings, FRP Gratings, Composite Gratings

Runchun Casting (Zhoushan) Co., Ltd. , https://www.en124casting.com

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