Direct drive bearing mechanism
AssigneeSMC Corporation
InventorsShigekazu Nagai, Akio Saitoh, Koji Sugano, Masaru Saitoh
Life of this patent
Estimating the term…
Abstract
A direct drive bearing mechanism comprises guide plates which are installed to retaining recesses of a guide block and each of which has a plurality of hemispherical dimples, race members which are installed to a guide rail and each of which has a groove having a circular arc-shaped cross section, and a plurality of balls each of which rotates in each of the dimples and which slide along the grooves so that the balls do not circulate.
Claims9
A direct drive bearing mechanism having a linear member and a displacement member for making relative linear displacement in which any one of said linear member and said displacement member supports the other, said direct drive bearing mechanism comprising:
- a guide plate which is provided for any one of said linear member and said displacement member and which has a plurality of substantially hemispherical dimples;
- a race member which is provided for any one of said linear member and said displacement member so that said race member is opposite to said guide plate and which has a groove;
- and
- a plurality of balls which rotate in said dimples of said guide plate when said linear member and said displacement member make relative displacement and which slide along said groove of said race member so that said plurality of balls do not circulate.
Dependencies are inferred from the claim text.