Control of Negative Deviation in Bar Rolling Machine
Bar rolling machine is widely used in different industries. It involves passing materials, such as steel bars, through a series of rollers to form them into a product with desired shape and size. The success of a bar rolling machine greatly depends upon the proper setting and control of the rollers and the accompanying devices. In particular, it is essential to have a good control of the negative deviation in order to obtain a satisfactory product.
Negative deviation occurs when the bar is expelled from the machine earlier than expected, usually due to an improper setting of the rollers. This not only affects the accuracy of the product in terms of size and shape but can also result in costly material wastage. It is therefore important to identify and control the factors that can cause negative deviation so that the product quality can be maintained.
One of the main causes of negative deviation is an inappropriate gear ratio in the gearbox of the rolling machine. If this ratio is not properly set, it can result in the bar being expelled prematurely. This issue can be addressed by calibrating the gearbox in accordance to the manufacturers specifications and regularly checking any minor adjustments.
Another factor that should be monitored is the lubrication quality. Poor lubrication can cause the bar to move slower than expected and may result in negative deviation. This can be remedied by introducing adequate levels of lubrication and ensuring that the quality is maintained.
In addition, the alignment of the rollers should be periodically checked to ensure that no deviation is caused. If misalignment is detected, it should be corrected to prevent future issues. Furthermore, the speed of the bar should be adjusted to the recommended rate in order to minimize any deviation while ensuring that the product is of superior quality.
Lastly, the operator should be trained to recognize the signs of negative deviation and take the appropriate corrective measures. This includes paying attention to changes in the quality of the product and understanding the causes of deviation.
All in all, controlling the negative deviation in a bar rolling machine is essential for the production of a high-quality product. By keeping a close eye on the gearbox, lubrication, rollers, speed and operator, it is possible to minimize the occurrence of any deviation and ensure a satisfactory final product.
