Top-mounted assembly technology of camshaft cylinder cover assembly

Abstract

The invention relates to a top-mounted assembly technology of camshaft cylinder cover assembly. The assembly technology mainly comprises steps arranging an air gate valve rod on the cylinder cover in a pressing mode, installing an intake valve and an exhaust valve, measuring deflection of the intake valve and the exhaust valve, installing an intake valve spring, an exhaust valve spring, an exhaust valve inner spring, a valve spring seat and a valve collet, detecting quality of the installation of the valve collet, detecting the valve collet patting, detecting leakage of the valve collet, installing components such as an intermediate gear assembly and a thrust plate in correct timing, installing components such as an oil injector assembly, tightening an oil injector press plate bolt and a middle gland nut, detecting extending quantity of the oil injector assembly and transferring and offline of qualified products of a cylinder cover assembly and the like. The top-mounted assembly technology of the camshaft cylinder cover assembly is saved in equipment investment and working position arrangement. Control ability is effectively improved in the process of assembly quality. The installation of components and parts of the bottleneck operation is optimized, the technological process is reasonably distributed, the requirement of quantity production is met, and the cycle time of the whole line is in 130s.

Description

technical field [0001] The invention relates to an assembly process of a cylinder head assembly, in particular to an assembly process of an overhead camshaft cylinder head assembly, which belongs to the field of engine assembly processes. Background technique [0002] At present, the assembly process of the domestic cylinder head assembly is generally to install the intake and exhaust valves first, and then turn the cylinder head 180° to install the valve stem sealing ring; the production line equipment must be equipped with a corresponding device to prevent the valve from falling out , will increase equipment investment. In addition, when the production line has a large batch and a short cycle time, generally only the valve sinking amount and the fuel injector extension amount are randomly inspected, and it is impossible to perform a full inspection of all key assembly dimensions and key assembly processes. [0003] The above assembly process of the cylinder head assembly ...

AI Technical Summary

Problems solved by technology

[0002] At present, the assembly process of the domestic cylinder head assembly is generally to install the intake and exhaust valves first, and then turn the cylinder head 180° to install the valve stem sealing ring; the production line equipment must be equipped with a corresponding device to prevent the valve from falling out , will increase equipment investment

In addition, when the production line has a large batch and a short cycle time, it is generally only possible to carry out random inspections on the valve sinking amount and the fuel injector extension amount, but it is impossible to perform a full inspection on all key assembly dimensions and key assembly processes.

[0003] The above cylinder head assembly assembly process has the following disadvantages: the traditional valve stem sealing ring will increase equipment investment, and the overturning and installation of the valve stem sealing ring cannot be performed at one station

In addition, if only part of the assembly dimensions are sampled during production, not only the assembly quality process control cannot be guaranteed, but also the unqualified parts cannot be repaired in time