China National Heavy Duty Trucks Co., Ltd. puts on production of 5.29-speed biman bevel gears


On July 18, 2014, the 5.29-speed ratio berm gear pair was successfully tested in the gear processing department. At this point, the bridge box company's five kinds of speed ratio MAN heavy-duty bevel gears have achieved mass production.

The 5.29 speed ratio bevel gear pair can bear higher torque compared with other speed ratio bevel gear sets produced in the company before. It is suitable for low speed and large torque occasions such as buses and dump trucks.

Trial production of new products, from tool design to process parameter design, to machine parameter setting, involves as many as hundreds of design data. If one of the data is wrong, it may lead to waste products.

Bridge Box Company sums up the processing experience of existing MAN bevel gears. Starting from the blank design, all parameters have been verified theoretically, software tested, and repeatedly revised. During the trial production process, the problem of pre-grooving of the positioning sleeve of the driving gear milling tooling and the problem of the P65 machine tool vibration caused by the excessive weight of the driven wheel were solved. After a lot of efforts, the final success was achieved.



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