METHOD AND MACHINE-TOOL FOR MAKING ARCH TEETH OF CYLINDRIC GEAR WHEELS Russian patent published in 1996 - IPC

FIELD: mechanical engineering. SUBSTANCE: simultaneous rotation and tangent feeding of a blank provide formation of an evolvent tooth. A gear rack is used as a tool. The rack is set in consistent reciprocation along the tangent. The amplitude of the reciprocation is defined by a relationship presented in the invention description. The machine-tool has base and stand movably mounted on the base and provided with guides. The vertical guides of the stand are provided with carriage with a drive of reciprocation provided with horizontal guide. The carriage guides are provided with tool support having a drive for strait line motion. The bas has a table for a wheel to be machined. The table is provided with a drive for rotation. The machine-tool has an additional drive for reciprocation of the tool support in the horizontal direction. It is made up as a lever whose length can be adjusted and which is mounted for permitting rocking. One of the ends of the lever is pivotally connected with the support. The other end is pivotally connected with the end link of the drive for straight line movement of the support. The drives for vertical and additional horizontal reciprocation and horizontal movement of the support as well as the drive for rotation of the table are kinematically interconnected. EFFECT: enhanced efficiency. 2 cl, 3 dwg