| 摘要 |
The present invention relates to a ball spline comprising a lubrication structure, which includes a long axis, a moving object, a retainer and a plurality of rolling members. The long axis is extended along one direction to form a long strip type structure, and the extension direction is defined as an axial direction, and a plurality of rolling channels is prepared along the axial direction on the outer surface of the long axis. A through-hole penetrated by the long axis is formed in the moving object, and a rolling groove facing the rolling channel is formed in the inside of the through-hole. The rolling channel and the rolling groove form a weight path, and a plurality of oil holes linked with the through-hole is formed on the outside of the moving object. The retainer is installed between the long axis and the moving object. The retainer has a plurality of maintaining flow paths, and one maintaining flow path and one weight flow path form one circulation flow path. The axial direction flow path formed along the axial direction and a lateral flow path connected to the maintaining flow path and the axial direction flow path are formed between two maintaining flow paths. The axial direction flow path and the lateral flow path constitute a lubricant flow path together with the inside of the through-hole, and the lubricant flow path is connected to the oil hole. The rolling members are installed on the circulation flow path. |
