Patent ID: 9322630
Filing Date: 2016-04-26
CPC Classification: B23G,F02F,G01B,Y10T

Claim Text:
1. A method for producing and checking a thread arranged in a cylinder head to receive a spark plug having a spark plug thread, comprising at least the following steps: determining spark plug parameters, introducing a spark plug hole into the cylinder head, defining a starting point of an internal thread to be introduced into the spark plug hole and corresponding with the spark plug thread, by using the spark plug parameters determined, introducing the internal thread by a milling tool being brought up to a wall of the hole tangentially at least in an area of the starting point, with the internal thread being milled circularly, and introducing a plug gage which has the spark plug parameters, the plug gage having a spanner flat for engaging a torque wrench and a measuring face which is provided opposite an extension arranged on a threaded body corresponding to the spark plug thread, wherein an orientation of the extension in a mounted state can be detected by the measuring face.