6.3 Determination of the length of the ball screw
The adjustment distance of the customer in the axial movement of the ball screw is relatively small, no more than 120mm, and considering the length of the nut itself, the length of the customer screw is 183mm.
6.4 Determination of the accuracy of the ball screw
The accuracy of the ball screw can be determined from the data in Figure 2.
Chart 2
The customer's effective stroke is within 120mm, and the required cumulative lead deviation is within 0.02mm. According to the above table, the accuracy level C4 can be selected to meet the usage requirements.
6.5 Final determination of ball screw model
In summary, the calculation and accuracy confirmation, according to the Zhongda ball screw model coding rules, the final ball screw model is determined as: R25-5T4-FSI-183-183-C4.
7 Conclusion
In the institutional upgrade and improvement project of the tablet machine, it mainly assisted the customer to carry out automation improvement on the original manual mechanism and realized the expected requirements of the customer. At the same time, the selection and calculation of the ball screw were analyzed in detail, and the appropriate one was selected. product. Through this structural modification success, the customer will refer to this case for the automatic operation structure of the ball screw drive on the subsequent conventional models.
It is believed that with the improvement of domestic automation level, the high-end transmission products of ball screws will be more and more applied to various industries to further meet the high-speed and high-precision needs of customers.
ã€references】
[1] Selection and Application of Ball Screws--《Modern Parts》 2004 Z2
[2] Development and application of high-speed ball screw pair comprehensive performance test system Network Baidu Library 2010.5.22
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