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Car milling compound nc machine tool guide bearing is introduced
what car milling compound nc machine tools is the upper guide bearing? Is detailed to introduce below:
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1, the role of the guide bearing:
car milling compound nc machine tool guide rail bearing set limits generator spindle is the purpose of the work, make its can only within the scope specified in the guide rail bearing clearance under radial load on the generator shaft.
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2, the working principle of the guide bearing:
the working principle of thin oil lubrication bearing block type unit mainly in the high speed rotates, the use of lubricating oil into the combination of bearing and shaft neck surface to lubrication bearing, after oil cooler cooling, lubrication of hot oil into the combination of bearing and shaft neck surface again. With the operation of the unit, automatic cooling lubricants by reciprocating cycle. The spindle rotates, between the journal and bushing surface form stable oil wedge, bear radial load, and transferring them to guide on the bearing seat, and then transferred to the rack.
3, the structure of the guide bearing:
CNC lathe guide bearing is a kind of thin oil lubrication bearing, mainly composed of bearing cover, oil box, cooler, return pipe screw, bearing, bearing, load, thermometer, etc. B two units of standing guide sleeve is divided into eight guide bush, according to the circumference uniformly distributed on the generator shaft guide shaft neck.
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4, bearing temperature increases in the cost and unit vibration analysis: by running the observation and analysis of maintenance, thought to cause the bearing temperature rise and the main reason for the vibration has two;
( 1) The increase of the bearing clearance is far greater than the design requirements of clearance, leads to the formation of a lubricating oil into the bearing bushing surface is not easy to oil wedge, cause poor lubrication, cause temperature rise of guide bearing, the vibration increases.
( 2) Shaft contact point on the surface of the ceramic tile is lesser, contact is not enough, do not conform to the requirements of the equipment specification.
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5, the temperature rise of the guide bearing solutions
according to the manufacturer's design requirements, continuous running when the car milling compound CNC machine tools, high temperature of the cooling water is not more than 25 ° c, temperature and oil temperature of high temperature ceramic tile should not exceed 65 ° c. Wattage and the change of oil temperature is not only related to the temperature of the cooling water, and the cycle of lubricating oil and the clearance between the journal and the spindle axis. Numerical control lathe without the permission of the guide bearing clearance is 0. 2 to 0. 3 mm( Two-way clearance) , bearing lower into lubricating oil. When the main shaft clockwise operation, lubricating oil is easy to enter the guide bearing of the bearing surface and produce oil wedge. Lubrication of ceramic tile surface, even through the spindle big swinging point, although matching small gap, but due to the short distance, good lubrication condition, less friction heat, cooling effect is good, generally does not lead to bearing temperature rise phenomenon, also won't lead to ceramic tile burning.
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JSWAY Company’s Professional Team Performance
As one of the exhibitors, JSWAY Company showcased the excellence of its professional team at this Jakarta Industrial Week. The team members of JSWAY Company, with their enthusiasm and professional knowledge, actively engaged in exchanges with customers from all over the world, providing them with detailed product introductions and technical support. They not only demonstrated JSWAY Company's advanced technology and high-quality products in the fields of CNC machines, milling and turning centers, and Swiss-type lathes, but also left a deep impression on customers with their enthusiastic service.
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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.
By implementing the above key points, Swiss-type lathes can achieve high-precision, high-efficiency linear positioning, meeting the machining demands of high-precision fields such as aerospace, automotive manufacturing, and medical devices.