TL01 - A Refined Method to Check Tooth Contact Patterns of Gear--Guarantees Factory Quality Tooth Contact, but with Less Effort and Less Risk

Abstract

This paper describes an advanced method to check the tooth contact of a gear unit. To perform the check, only a small wrench and a precision frame spirit level are needed; both are commodity tools. Two reference bars must be provided on the gear casing on which the frame spirit level can be placed. The purchaser has to specify this prior to ordering the gear unit. The method has been used for many years on gear units and has proven itself in the field as reliable. In addition, the method is easy and quick to perform (practical). It can be performed during operation and at standstill. No blue ink test is required. The gear unit does not have to be opened, not even its inspection cover. No anchor bolts need to be released. Thus, the time needed to check the tooth contact is strongly reduced. The check can be performed within regular time intervals by the operating staff within 20 minutes. In total, the quality of installation and maintenance is improved while at the same time work can be completed faster.