Motion guide device and method of producing the same

Abstract

A motion guide device simultaneously achieves high strength and low weight and can be mass-produced in good productivity. The motion guide device includes a track rail (1) having a rolling body rolling section (1a); a movement block (2) having a loaded rolling body rolling section (8c) facing the rolling body rolling section (1a) and also having a rolling body circulation route including a rolling body return path (10a) extending substantially parallel to the loaded rolling body rolling section (8c); and rolling bodies (3) arranged in the rolling body circulation route. The movement block (2)includes a steel rolling element (8) having the loaded rolling body rolling section (8c); a metal installation element (9) joined to the rolling element (8), having an installation surface (9a) for installing the movement block (2) on a mating part, and made of metal having smaller specific gravity than the rolling element (8); and a resin return element (10) having the rolling body return path (10a). The movement block (2) simultaneously achieves high strength and low weight because the three materials having different strengths and specific gravities are arranged at appropriate places of the movement block.

Description

technical field [0001] The invention relates to a motion guiding device such as a linear guide and a spline used to guide a guiding object such as a workbench to move in a straight line or a curve, and a manufacturing method thereof. Background technique [0002] As a mechanical element for guiding a linear motion or a curved motion of a guiding target such as a table, there is known a motion guiding device in which rolling elements such as balls and rollers are interposed in a guiding portion. Since it can achieve brisk movement, it is used in various fields such as robots, machine tools, semiconductor and liquid crystal manufacturing equipment, and medical equipment. [0003] A linear guide of a motion guide has a rail mounted on a base and a moving block mounted on the rail in a movable manner relative to the rail. A rolling element raceway portion extending in the longitudinal direction is formed on the rail. A loaded rolling element raceway facing the rolling element ...

AI Technical Summary

Problems solved by technology

It cannot be said to have sufficient strength when it is intended to be lightweight, and it cannot be said to be sufficiently lightweight when it is intended to ensure strength.

Images