What Are The Reasons For The Unstable Boring Size?

Qianchui Tool will share with you today the reasons that affect the unstable boring size. The main reasons can be analyzed from the aspects of tool factors, parameter settings, material properties, machine tool status, etc.

Tool factors

From this point of view, the quality of the tool, improper size selection or poor grinding condition will lead to uneven cutting force. For example, blade wear, excessive tool bar overhang or unreasonable blade groove may cause vibration. The situation of each tool is different, so it is necessary to adjust according to the specific situation in actual operation. For example, Qianchui Tool's Fixed Eccentric Fine Boring has more than a dozen specifications.

Parameter settings

From this aspect, unreasonable parameters such as the cutting speed and feed rate of the machine will change the cutting resistance, which will cause the deformation of the boring bar or accelerated blade wear. For example, when the allowance is unevenly distributed, the cutting force fluctuates significantly. ‌

Material properties

From the perspective of material properties, the hardness difference or internal stress of the workpiece material will cause fluctuations in machining accuracy. For example, high-rigidity materials are prone to tool let-down, while low-plasticity materials may produce cracks. Therefore, the characteristics of the material itself are also one of the influencing factors. ‌

Machine tool status

Generally speaking, insufficient machine tool rigidity or positioning accuracy deviation will directly affect processing stability. For example, when there are debris on the spindle and tool holder taper surface, it may cause positioning errors, so workers need to regularly check and evaluate their equipment before starting the machine.

Operation link

Operation is also one of the influencing factors that cannot be omitted. If the clamping method is improper or the measurement error (such as insufficient measuring tool accuracy) is present, such a situation will also cause dimensional fluctuations. ‌