Guangdong JSWAY CNC Machine Tool Co., Ltd. since 2004.
What are the structure features of CNC lathe spindle components
CNC lathes have spindle parts, some as long as a spindle unit, you will have more than one. Spindle is referring to the machine drives the workpiece or tool rotating shaft, ladder is a hollow shaft, hollow shaft takes up a larger volume, but can drop in weight. On the basis of material mechanics analysis, when the shaft transmission torque, look from the radial cross section, the more the greater the effect of local transfer useful outside of torque. Transfer bigger torque in the shaft demand, demand is relatively coarse trunnion. And because in the effect of the transmission torque axis part is lesser, so generally choose hollow, in order to cut down the weight of a shaft. Generally by the main shaft, bearing and transmission parts ( Gear or pulley) Of the main shaft parts. Motion precision of the spindle assembly and structural stiffness is essential to determine the processing quality and cutting power. Target measure of spindle assembly function mainly rotation precision and rigidity and speed adaptive. (1) rotation accuracy: under the condition of no load, low speed, the radial and axial runout ( See the form tolerance) Main shaft and bearing, mainly depends on the quality of manufacture and installation. (2) the dynamic and static stiffness: mainly is decided by the twists and turns of the spindle stiffness, the stiffness and damping of the bearing. The spindle static stiffness is insufficient to directly affect the machining accuracy and the function of machine tool. (3) speed adaptability: the promise of the highest speed and speed range, mainly is decided by the structure of bearing and smooth, and the cooling conditions. Is for the implementation of the machine tool spindle parts, its function is to support and drive the workpiece or tool, end forming movement appearance, at the same time also on transfer movement and torque and cutting force and driving force under the effect of the load. Main shaft aperture is one of the elements that affect the stiffness, the spindle hole is used to pass and tool clamping equipment, can also be used to after the joint pneumatic, hydraulic chuck. ( Hollow rod) 。 Spindle hole diameter is larger, can pass the bigger the diameter of the bar, and the application range of machine tool is more wide, also the lighter shaft parts. Spindle hole diameter is mainly affected by the size of the main shaft stiffness. When spindle's inner hole diameter and the ratio of the diameter of less than 0. 3, the stiffness of hollow spindle is with solid spindle rigidity properly: when the ratio of the spindle spindle diameter and the diameter of inner hole of 0. 5, the stiffness of hollow spindle is 90% solid shaft stiffness; When the spindle hole diameter and the ratio of the spindle diameter greater than zero. A sharp drop in 7, the stiffness of hollow spindle.
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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.