Asymmetrical toothed wheel

摘要

A device comprises supports (3, 4) which can be moved relative to each other, and on mutually facing walls of which toothed profiles (6, 7) are provided. Each toothed profile interacts with opposing segments (31, 32) of a rotatable gear (2), by the rotation of which the supports (3, 4) can be moved in opposite directions simultaneously in a synchronized manner. The gear (2) has a varying tip circle diameter (d) along the gear circumference, wherein the tip circle diameter (d) increases along a segment (31, 32), and an effective outer diameter (dw) of the gear (2) is arranged between the supports (3, 4) in a clamped rotational position, so that the effective outer diameter (dw) matches a target diameter.

主权项

1. A device with supports (3, 4) which are capable of being moved with respect to each other and mutually facing inner walls of which have provided on them toothed profiles (6, 7) which co-operate in each case with opposed segments (31, 32) of a rotatable toothed wheel (2), by the rotation of which the supports (3, 4) are capable of being simultaneously moved in synchronism in opposed directions, the toothed wheel (2) has a differing tip circle diameter (d) along its periphery, characterized in that the tip circle diameter (d) increases along a segment (31, 32) and an effective external diameter (dw) of the toothed wheel (2) is present between the supports (3, 4) in a clamped rotational setting and the effective external diameter (dw) corresponds to a nominal diameter.