Guangdong JSWAY CNC Machine Tool Co., Ltd. since 2004.
Numerical control lathe oscillation problem
numerical control lathe in machining process, has the fibrillation lines formed workpiece appearance, rework rate, high rejection rate, accompanied by a knife phenomenon. Oscillation is not only seriously deteriorated processing appearance quality, and it can shorten the lathe and the cutting tool life. So we it is necessary to take some measures to reduce or eliminate oscillation lathe attack. The following is said to cause oscillation problem of numerical control lathe. Products in the process of machining, guangdong produce CNC lathe manufacturer of CNC lathe onset of oscillation is very messy, the causes of oscillation are various, through analysis, first has the following several aspects: ( 1) The shape of the workpiece and disorderly and the clamping part choose inappropriate: workpiece contour structure rules, there is no good datum, not convenient clamping, the workpiece clamp is not tight, loose during the course of processing, simple corresponding oscillation with the change of the cutting force and attack. ( 2) Uneven workpiece internal organization: casting blank parts local defects such as porosity, sand holes, loose, coarse grains or containing impurities. Casting soft hard uneven cutting, tool uneven force, cutting force is not stable, easy to stir the CNC lathe attacks, sometimes forming a knife, the machining quality of workpiece is difficult to control. ( 3) Cutting tool selection is not reasonable: blade data is not appropriate, poor rigidity, is one of primary cause of oscillation. If choose the wrong tool, sometimes can make the tool wear increase or cause chip tumor, hair artifacts appearance or play knife cause oscillation and affect the quality of the product. When turning the low frequency oscillation, usually in the oscillation system of workpiece and tool holder system ( But the vast majority of cases the workpiece system oscillation is larger, plays a dominant position) , from them from time to time, and sometimes approach, attacks in the opposite direction from the intrusive flat action and reaction.
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Methods to Reduce the Impact of Force-Induced Deformation
To minimize the impact of force-induced deformation on the stability of Swiss-type lathes and enhance machining accuracy and stability, the following measures can be taken:
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Compare manual mills and CNC machine advantages, costs, precision, and applications to choose the right technology for prototyping, job shops, or production.
Improving Precision and Service Life through Fixture Adjustment and Maintenance
Fixture Adjustment Methods:
Fixture Maintenance Methods:
By properly adjusting and regularly maintaining fixtures, the machining accuracy and service life of Swiss-type lathes can be effectively improved, ensuring efficient and stable production processes.
The stress in a machine tool bed can influence machining quality in several ways:
Machining Accuracy
Deformation and Displacement: Stress in the bed can cause structural deformation, which in turn affects the positional accuracy of various machine components. For example, insufficient rigidity at the tailstock support of the bed may lead to positional deviations of the tailstock center, with maximum displacement deformation reaching up to 0.13465 mm. Such deformation directly impacts the relative positioning between the tool and the workpiece, resulting in machining errors.
Differences in Machining Effects with Different Power Head Configurations
Single Spindle vs. Dual Spindle: Single-spindle Swiss-type lathes usually come with one side power head and are suitable for machining relatively simple parts. In contrast, dual-spindle lathes can be equipped with more power heads and can even perform simultaneous machining on the main and secondary spindles, significantly improving machining efficiency and complexity.
Side Tool Post vs. Horizontal Tool Post: Power heads with a side tool post structure perform better when machining difficult-to-chip materials, while those with a horizontal tool post structure are more efficient for machining easy-to-cut materials.
In summary, the power heads of Swiss-type lathes offer significant advantages in machining accuracy, efficiency, complexity, and adaptability. Different power head configurations can be selected based on specific machining requirements to achieve the best machining results.