Circumferential multi-station bolt automatic assembling system and control method thereof

Abstract

The invention discloses a circumferential multi-station bolt automatic assembling system. Counteraction supporting parts of multiple pneumatic torque wrenches are circumferentially uniformly fixed ona rotary bracket; a cylinder is fixed at the upper end of the rotary center part of the rotary bracket; a piston rod of the cylinder is in threaded connection with a U-shaped bracket; a fixed bracketis arranged below the rotary bracket; the fixed bracket is located on a workpiece through 3 locating pins; the rotary bracket, the U-shaped bracket and the fixed bracket are coaxial; a planetary speedreducer and a stepping motor are arranged below the fixed bracket in sequence along the central line direction; a T-shaped driving arm is arranged on an output shaft of the planetary speed reducer; and the stepping motor and the planetary speed reducer as well as the planetary speed reducer and the T-shaped driving arm are connected through keys. Under the action of an electrical control system and a pneumatic control system, the cylinder and the pneumatic torque wrenches automatically perform on-off, graduation and bolt screwing actions; multi-station automatic work is realized; the workingtime is shortened; and the assembling quality and the working efficiency are improved.

Description

Technical field [0001] The invention relates to the technical field of mechanical assembly, in particular to a circumferential multi-station bolt automatic assembly system. Background technique [0002] The assembly of bolted connections is a common process in the mechanical assembly process, which plays a very important role in the performance of the product. In the assembly process of wind turbines, the connection of high-strength bolts is widely involved, such as the pitch bearing of the wind turbine. , Yaw bearing installation, etc. The existing operation method is to use hydraulic, electric or pneumatic torque wrenches to tighten bolts one by one, which is very low in efficiency and high in production costs. Quality accidents caused by improper assembly of bolt connections are not uncommon. The fundamental purpose of bolt connection is to reliably connect the objects to be fastened together by the axial pre-tightening force after tightening. In the actual assembly process...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a circumferential multi-position bolt for the disadvantages of manual torque wrench or hydraulic, pneumatic, electric torque wrench and other tools in the prior art to tighten one by one, low operating efficiency, high labor intensity, and high production cost. The automatic assembly system and its control method realize multi-station automatic operation, reduce working hours, and improve assembly quality and work efficiency

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