초록 ▼

This invention is revises the cap nut which the custom knows to suppose it to install trough's outline, will cause to install the dadoing to lead (lead angle to be small) lowly or on two above trundle ditch cap nut will not have the broken tooth's question, when will process should install the troug

This invention is revises the cap nut which the custom knows to suppose it to install trough's outline, will cause to install the dadoing to lead (lead angle to be small) lowly or on two above trundle ditch cap nut will not have the broken tooth's question, when will process should install the trough, only need use the face cutter then to process the forming, will reduce the production cost; And return circuit of this invention all establishes in the backflow part, therefore may promote and the cap nut supposes the backflow hole and the load way grade of fit, causes to roll the moving parts movement to be smoother, and reduces the noise production.

대표청구항 ▼

1. A ball screw having circulation elements, comprising: a screw, being formed with a spiral rolling trough at an outer edge thereof;a cap nut, being formed with a through hole for the screw to insert through, an inner edge of the through hole formed with a rolling trench relative to the rolling tro

1. A ball screw having circulation elements, comprising: a screw, being formed with a spiral rolling trough at an outer edge thereof;a cap nut, being formed with a through hole for the screw to insert through, an inner edge of the through hole formed with a rolling trench relative to the rolling trough, the rolling trench and the rolling trough forming a loading path, the loading path having a lead angle, and the cap nut having a circulation hole, being formed through two ends of the cap nut along an axial direction, and two mounting troughs, being respectively formed at two ends of the circulation hole and connecting with the rolling trench;two circulation elements, being formed at the mounting troughs, respectively, each of the circulation elements being formed with a circulation passage, two ends of the circulation passage connecting to the loading path and the circulation hole to form a circulation path; anda plurality of rolling elements, being formed at the circulation path;wherein each of the mounting troughs is formed with an inclined plane, the inclined plane is approximately parallel to a lead angle of the loading path, each of the circulation elements is formed with a mating surface, the mating surface of each circulation element is formed relatively to the inclined plane of the corresponding mounting through, andwherein each of the mounting troughs is further formed with a first leaning surface and a second leaning surface respectively extending from two sides of the inclined plane, and a normal direction of the first leaning surface and the second leaning surface is parallel to the axial direction of the screw. 2. The ball screw comprising the circulation elements of claim 1, wherein each of the circulation elements is further formed with a first resisting surface and a second resisting surface. 3. The ball screw comprising the circulation elements of claim 2, wherein the first resisting surface of the circulation element leans on the first leaning surface of the corresponding mounting through and the second resisting surface of the circulation element leans on the second leaning surface of the corresponding mounting through. 4. The ball screw comprising the circulation elements of claim 2, wherein the first resisting surface and the second resisting surface respectively extend from two sides of the mating surface in each circulation element. 5. The ball screw comprising the circulation elements of claim 1, wherein a section of the inclined plane is U shaped.