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Method for sealing conical surface by reaming and grinding cylinder cover valve

A technology for sealing cone surfaces and grinding cylinders is applied in the field of mechanical processing to achieve the effect of improving work efficiency and low cost

Active Publication Date: 2011-10-19
CHINA NORTH IND GRP NO 70 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for countersinking the conical surface of the valve sealing surface of the cylinder head. The problem of jumping blades improves work efficiency

Method used

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Embodiment Construction

[0014] A method for countersinking the sealing tapered surface of a cylinder head valve, which comprises the following steps:

[0015] (1) Install the blank cylinder head on the machining center, process its positioning plane first, process the positioning pin holes on the positioning plane through the process steps of drilling, boring and reaming, and position the blank cylinder head through the positioning pin holes on the positioning plane , process holes and threaded holes on the upper plane, holes and grooves on both sides, drill oblique oil passage holes, grind the positioning plane and the upper plane, bore the valve guide hole on the cylinder head, install the valve guide to locate the positioning pin hole of the plane set benchmarks;

[0016] (2) First use the guide knife to process the inner hole of the valve guide and the tapered surface of the seat ring, and use the composite tool to process the inner hole of the valve guide and the seat ring hole at one time;

[...

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Abstract

The invention relates to a method for sealing a conical surface by a reaming and grinding cylinder cover valve, comprising the following steps: (1) installing a blank cylinder cover on a machining center; firstly, machining a positioning plane; machining a dowel hole on the positioning plane by the technical steps of drilling, boring and reaming; setting a positioning reference by using the dowel hole on the positioning plane; machining the inner bore of a valve conduit and a race conical surface by a guiding cutter; machining and shaping the inner bore of the valve conduit and a race hole by a compound tool; quenching the race conical surface by laser, wherein the hardness is 50HRC; clamping the part of the race conical surface on the tool; regulating a dedicated grinding head, wherein the bounce of a guiding part and a clamping part is not more than 0.015mm; moving the center of the cutter bar to the center of the valve conduit; regulating the revolving speed, the feeding speed and the feeding mode of a grinding wheel; machining the race conical surface; after machining, moving to the canters of other conduits; repeating the above working procedures; and finishing machining the part. According to the method, the problem that the race conical surface of which the hardness is more than 50HRC on the cylinder cover is difficult to machine is solved, the machining cost is low, the working efficiency is improved.

Description

technical field [0001] The invention relates to a mechanical processing method, in particular to a method for countersinking a cylinder head valve sealing cone surface. Background technique [0002] The cylinder head of the engine is one of the key parts of the engine. The intake and exhaust of the engine work by opening and closing the valve installed on the cylinder head. The valve moves at a high speed in the valve guide hole. When the intake and exhaust need to be closed, the intake The cone surface of the exhaust valve is bonded to the sealing cone surface of the cylinder head valve to achieve a sealing effect. Therefore, the sealing tapered surface on the cylinder head has high requirements for the runout of the valve guide hole. The processing of the intake and exhaust valve sealing tapered surface and the valve guide hole is a difficult point in the processing of the cylinder head. [0003] Generally, the cylinder head of the engine is equipped with a valve seat ri...

Claims

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Application Information

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IPC IPC(8): B23P23/00
Inventor 王好李春阳赵敏建张树勇
Owner CHINA NORTH IND GRP NO 70 RES INST
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