Press-fitting fixture for guide pipe and seat ring of air cylinder head

Abstract

The invention discloses a press-fitting fixture for a guide pipe and a seat ring of an air cylinder head. The press-fitting fixture comprises a fixture seat and two pressing heads. Two locating holes are symmetrically formed in the fixture seat, two locating core devices are installed in the two locating holes respectively, and the seat ring and the guide pipe are connected to the locating core devices in a locating and sleeved mode. The lower portions of the pressing heads are connected with the air cylinder head to enable an air inlet valve of the air cylinder head and an exhaust valve of the air cylinder head to be located in the centers of the locating core devices respectively and correspondingly, and power mechanisms are connected to the two pressing heads. The fixture is simple in structure and convenient to operate, enables the guide pipe and the seat ring to be arranged in the air cylinder head in a press-fitting mode at a time, guarantees the press-fitting precision of the guide pipe and the seat ring, and is beneficial for prolonging the service life of the air inlet valve of the air cylinder head and the service life of the exhaust valve of the air cylinder head.

Description

technical field [0001] The invention relates to a press-fitting fixture for a cylinder head conduit seat ring, in particular to a press-fitting fixture for press-fitting a cylinder head guide tube, an exhaust valve conduit and a seat ring. Background technique [0002] The valve stem, valve guide and seat ring of the cylinder head are the key components of the valve train. The guide tube and the seat ring are installed separately on the cylinder head. The traditional installation method is: directly knock the guide tube and the seat ring into the , In the exhaust valve, due to the frequent use of the intake and exhaust valves of the cylinder and high precision requirements, when the pipe and the seat ring are directly knocked in, there is an assembly deviation, which cannot be assembled accurately, and the service life of the intake and exhaust valves of the cylinder head is affected. . Contents of the invention [0003] In order to overcome the deficiencies in the prior ...

AI Technical Summary

Problems solved by technology

[0002] The valve stem, valve guide and seat ring of the cylinder head are the key components of the valve train. The guide tube and the seat ring are installed separately on the cylinder head. The traditional installation method is: directly knock the guide tube and the seat ring into the , In the exhaust valve, due to the frequent use of the intake and exhaust valves of the cylinder and high precision requirements, when the pipe and the seat ring are directly knocked in, there is an assembly deviation, which cannot be assembled accurately, and the service life of the intake and exhaust valves of the cylinder head is affected.

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