Drugi zębnik – budowa i montaż w obrabiarce

Obecnie w przemyśle maszynowym pracują nowoczesne obrabiarki, które przemieszczane są po prowadnicach za pomocą mechanizmów kulowych. Mechanizmy te są drogie i skomplikowane w montażu obrabiarki, szczególnie gdy dotyczy to przejazdu po poziomych długich prowadnicach.

A lot of horizontal boring mills moving on horizontal guide ways using traditional solution type toothed bar and pinion still work in the machine industry. This kind of drive shows errors in positioning caused by clearance in meshing between teeth of toothed bar and pinion. The existing clearance increases with the working time of the machine as a result of wear of the parts mating with each other. Inter-teeth clearance has a negative effect on the accuracy of the workpiece being machined. An effective way to improve the positioning of the machine while driving on the guides is to mount the second pinion to the drive. The principle of the second pinion operation is so that if the first pinion has contact with the tooth of the toothed bar on one side, the second pinion always contacts the tooth of the toothed bar on the other side. This arrangement of both pinions eliminates the negative impact of the inter-teeth clearance, and thus contributes to improving the accuracy of the machine tool.