avade töötlemise pink; puurpinke kasutatakse avade puurimiseks, sisetreimiseks, süvistamiseks, avardamiseks, hõõritsemiseks, keermestamiseks jms, a machine tool for drilling, reaming, counterboring, and tapping; it consists generally of a vertical standard, carrying a table for supporting the work and a arm provided with bearings fot the drilling spindle