Eight Causes of Grinding Wheel Stalling

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As an essential tool in industrial grinding processes, the grinding wheel’s effectiveness directly impacts workpiece processing quality and production efficiency. However, encountering situations where the grinding wheel cannot move during actual operations is common. This not only affects production schedules but may also damage workpieces. To delve into and resolve this issue, we’ve compiled eight major reasons for the grinding wheel’s inability to move.

  1. Improper choice of grinding wheel abrasives can result in difficulty moving the workpiece. Different workpiece materials require different types of abrasives for effective grinding. Incorrect abrasive selection can lead to insufficient grinding force, making it difficult for the grinding wheel to remove material from the workpiece surface.
  2. Inappropriate hardness of the grinding wheel is a crucial factor affecting its grinding capability. If the grinding wheel’s hardness is too high, its self-sharpening ability diminishes, making it difficult for dull abrasive grains on the wheel surface to dislodge, resulting in wheel blunting and difficulty moving the workpiece. Conversely, if the hardness is too low, the grinding wheel itself wears easily and cannot effectively grind the workpiece.
  3. The feed rate directly affects whether the grinding wheel can move the workpiece. A feed rate that is too small leads to insufficient grinding force to remove material from the workpiece surface, causing the grinding wheel to be unable to move. Conversely, excessive feed rate may overload the grinding wheel, leading to damage and ineffective grinding of the workpiece.
  4. With usage, the grinding wheel surface gradually wears or clogs, causing a decline in grinding capability. When the grinding wheel wears or clogs to a certain extent, the inability to move the workpiece occurs. Prompt dressing or replacement of the grinding wheel is required in such cases.
  5. Workpiece material characteristics, such as high hardness, toughness, or unique chemical properties, may render common abrasives ineffective in grinding, causing the grinding wheel to be unable to move. Matching abrasives, such as superabrasives (diamond or cubic boron nitride), should be selected based on workpiece characteristics, with optimization of grinding parameters.
  6. Heat generated during grinding can elevate workpiece temperature, altering its physical and chemical properties. When the workpiece temperature rises to a certain degree, the grinding wheel may be unable to move the workpiece. Excessive grinding temperature can also damage the grinding wheel and workpiece. Therefore, appropriate measures are needed to reduce grinding temperature.
  7. Insecure grinding wheel installation or transmission system faults can cause instability during grinding, affecting its grinding capability. When the grinding wheel exhibits oscillations or jumps, effective workpiece grinding becomes challenging, leading to instances where the grinding wheel cannot move.
  8. Coolant plays a crucial role in cooling, lubricating, and cleaning during grinding. Insufficient coolant or poor circulation can lead to excessive grinding zone temperatures, affecting the grinding wheel’s capability. When grinding zone temperatures are too high, the grinding wheel may have difficulty moving the workpiece. Therefore, ensuring an adequate supply and circulation of coolant is essential.

In conclusion, addressing the grinding wheel’s inability to move requires a comprehensive analysis and resolution of factors such as abrasive selection, grinding wheel hardness, feed rate, grinding wheel wear and dressing, workpiece material, grinding heat, grinding wheel installation and transmission, and coolant. By appropriately selecting and adjusting these factors, we can effectively enhance the grinding wheel’s performance, ensuring improvements in workpiece processing quality and production efficiency.

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