Ball maintenance chain, its preparation method and linear movement mechanism

Abstract

The invention relates to a ball maintenance chain, its preparation method and a linear movement mechanism. The ball maintenance chain is characterized in that holes on a long flat strip are aligned in longitudinal direction; spacers are formed between the holes to separate two adjacent holes; upper and lower spacer blocks are combined on the spacers; the surfaces between the upper and lower spacer blocks and the holes are smooth surfaces, a portion of which are ball-shaped coating surfaces and smoothly connected with hole surfaces; each ball-shaped coating surface has an opening, which is disposed between the axial vertical plane and the axial side face of the long flat strip; ball-shaped coating surfaces are disposed in opposite directions and formed by side directional open and shut of left and right moulds; a smooth cylindrical surface on each end of the long flat strip, is connected with an indentation surface inside or outside the long flat strip, and can be curved inward or outside to turn smoothly.

Description

Technical field [0001] The present invention relates to a ball retaining chain, a method for manufacturing a ball retaining chain, and a linear motion mechanism, in particular to a ball retaining chain that retains a plurality of balls extending in rows in the axial direction, and is separated from each other at a certain distance. The balls hold the chain and the balls and circulate in the circulation channel provided by the linear motion mechanism. Background technique [0002] The existing linear motion mechanism has a moving piece and an axially extending track piece. The moving piece and the track piece each provide at least one row of mutually corresponding tracks. Between the tracks, a row of balls is in contact with the track and rolls on the track. The moving pieces are parallel to each other. A return channel and two revolving channels are provided for each row of mutually corresponding tracks. The revolving channel connects the return channel and the end entrance and e...

AI Technical Summary

Problems solved by technology

[0007] In combination with the above, in view of the defects of the conventional ball retaining chain, the object of the present invention is to provide a ball retaining chain and a manufacturing method to solve the above-mentioned problems of difficult demoulding due to interference during injection molding, inability to completely restrain the balls, and easy generation of burrs during injection molding. problem, and create an oil storage space between the spacer block and the ball to increase the oil storage capacity and prolong the lubrication effect

[0008] Another object of the present invention is to solve the problem that when the ball retaining chain is guided in the guide groove of the circulation channel, it cannot run smoothly due to the step difference or burrs of the groove.

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