2results about How to "Achieve controllable" patented technology

This invention relates to a grinding repair method for a central drive spline shaft, belonging to the field of repair technology. The invention proposes a grinding repair method for a central drive spline shaft. This method involves micro-grinding of the splines on a drive shaft with out-of-tolerance tooth direction but whose spline tooth thickness meets process requirements and has a significant remaining lifespan. This restores the technical condition of the spline teeth on the central drive spline shaft to its original process level, extends the lifespan guarantee capability of the drive shaft, and achieves cost reduction and efficiency improvement.

The utility model discloses an automatic test system of a radio frequency chip, which comprises a test machine, a radio frequency chip, an upper computer, an STM32 external device and an SPI switch, a power supply module of the test machine supplies power to the radio frequency chip, the STM32 external device and the SPI switch, the test machine is provided with four signal lines which are connected with the STM32 external device, and the STM32 external device is connected with the upper computer. The SPI interfaces of the test machine and the STM32 external equipment are respectively connected to the SPI switch, the common end of the SPI switch is connected to the SPI interface of the radio frequency chip, the upper computer participates in the dynamic debugging of the radio frequency chip port, the power supply module of the test machine is connected with the radio frequency chip and the STM32 external equipment, the STM32 calibration is used, the program is more convenient for the modular design, and the debugging is also convenient.