TWM470903U - End-recirculated ball screw - Google Patents

Description

End plug ball screw

This creation is a linear transmission element, especially an end plug ball screw.

Referring to FIG. 8 , it is a configuration of a reflow element and a nut of a ball screw of the prior art. The reflow element ( 2 ) is mounted on a low lead (small lead angle) or more than two. The nut (1) of the rolling groove (11), because of the limitation of the foregoing two conditions, causes the thickness (D) between the rolling grooves (11) of the nut (1) to be thin, and in order to install the reflow element ( 2) A mounting groove shall be provided on the nut (1), and the contour of the mounting groove shall match the shape of the reflow element (2), and the shape of the reflow element (2) is generally rectangular as shown, so that it is impossible at all A mounting groove having the same contour as the reflow element (2) is disposed on the nut (1). If it is set, the rolling groove (11) is damaged (X) as shown in the figure, and the rolling element is not allowed to be opposed. Running in the rolling groove (11), the reflow element (2) cannot be mounted on the nut (1) with a low lead (small lead angle) or two or more rolling grooves (11).

However, in order to improve the above-mentioned conventional problems, the reflow element is mounted on a nut having a low lead (small lead angle) or two or more rolling grooves. Japanese Patent Publication No. JP2005-233238, the nut system a reflow hole having two ends extending through the axial direction, and two reflow elements are disposed at two ends of the return hole, and the two ends of the return flow path of the reflow element are respectively connected to the spiral raceway of the nut and the screw and the return hole, and Because the spiral raceway has a small lead or a plurality of spiral raceways, the thickness of the spiral raceway is thinner. In order to smoothly install the reflow element on the nut, a part of the return passage of the reflow element is designed. On the nut, the return path provided on the nut is a curved structure, and the surface is a curved surface, so the processing is not easy, and the processing time is relatively long, and the manufacturing cost is also increased. And even if the processing is completed, it may not match the return flow path on the reflow element, and because the return flow path is a curved structure, the running of the rolling element must cause an impact with the surface of the return flow, and the return flow path is partially made of metal. Because the noise generated by the impact is also high and it sounds smooth, so the patented technology can not completely overcome the installation of the reflow element in the low lead (small lead angle) or more than two rolling grooves The problem caused by the nut.

Based on the above-mentioned problems of the prior art, the creator has been researched and improved, and the creation of the following creations can be achieved.

In view of the above problems, the main purpose of this creation is to develop a ball screw that can be applied to a low lead ball.

In order to achieve the above object, the present invention is an end plug type ball screw comprising: a long shaft extending in a direction into an elongated structure defining the extending direction as an axial direction, the long axis surface being provided a spiral rolling groove and a tooth peak; a nut having a through hole for the long shaft, the inner edge surface of the hole is provided with a rolling groove opposite to the rolling groove, and the rolling groove and the rolling groove form a a load path, wherein the two ends of the perforation are respectively provided with a mounting groove, the mounting groove is cut off at least two of the rolling grooves, and the nut is provided with a return hole connecting the two mounting grooves; The two ends are respectively provided with a front flow channel and a rear flow channel, and one end of the front flow channel and one end of the rear flow channel are connected to each other, and the other end of the front flow channel is Engaging with the load path, the other end of the rear flow channel is coupled to the return hole to form a circulation path; the plurality of rolling elements are disposed in the circulation path; wherein the rolling element passes the front flow path through the tooth peak After entering the latter stage Road.

The rolling element of the present invention enters the rear flow path by climbing the tooth peak through the front flow channel, because the design of the front flow channel increases the radius of the circular arc angle of the rear flow channel and the return hole, and the rolling element is relatively The smoothness of the runner flow path entering the return hole is increased, and the nut does not feel frustrated when the ball screw is running. In addition, by designing the rear-stage flow passage, the installation groove can cut at least two rolling grooves, and the load paths are all completed without damage, and the rolling elements are smoothly improved when the load path is operated. The nut will not feel frustrated when the ball screw is running. Therefore, this creation has indeed improved the problems of the prior art, so that the smooth running of the ball screw is improved, and the running path of the rolling member is assumed to be without a fault, so that the collision can be avoided and the noise can be avoided.

Prior art - symbolic description
1‧‧‧ nuts
111‧‧‧ rolling groove
2‧‧‧Reflux components
X‧‧‧damage
D‧‧‧Flesh thick creation - symbolic description
1‧‧‧ long axis
11‧‧‧ rolling groove
12‧‧‧ tooth peak
2‧‧‧ nuts
21‧‧‧Perforation
211‧‧‧ rolling groove
22‧‧‧Installation slot
23‧‧‧Return hole
3‧‧‧End plug
31‧‧‧ front section runner
32‧‧‧After runner
4‧‧‧Rolling parts
90‧‧‧Load path
X‧‧‧axis direction

The first figure is a system diagram of the created end plug ball screw.
The second figure is a combination of the created end plug ball screws.
The third figure is a perspective view of the end plug of the end plug ball screw.
The fourth and fifth figures are the top and side views of the end plug of the created end plug ball screw.
The sixth figure is a cross-sectional view of the axial end of the inventive end plug ball screw.
The seventh figure is a cross-sectional view of the display rolling element of the end plug ball screw in the end plug operation.
The eighth figure is a mating diagram of a conventional technical nut and a reflow element.

Referring to the first to seventh drawings, a preferred embodiment of the present invention is as shown in the first figure. The end plug ball screw of the present invention comprises: a long shaft (1) and a nut ( 2), the two ends plug (3), the plurality of rolling elements (4), the long axis (1) is elongated into a long strip structure in one direction, and the extending direction is defined as an axial direction (X), the long axis ( 1) The surface is provided with a spiral rolling groove (11) and a tooth peak (12); a nut (2) having a perforation (21) through which the long axis (1) is inserted, the perforation (21) The inner edge surface is provided with a rolling groove (211) opposite to the rolling groove (11), and the rolling groove (11) and the rolling groove (211) constitute a load path (90), and the axis of the hole (21) A mounting groove (22) is respectively disposed at both ends of the direction (X), and the mounting groove (22) cuts at least two of the rolling grooves (211), as shown in the first figure, and the nut (2) is a return hole (23) connecting the two mounting slots (22); two end plugs (3) are respectively disposed on the two mounting slots (22), and the two end plugs (3) are respectively provided a front flow channel (31) and a rear flow channel (32), one end of the front flow channel (31) and one end of the rear flow channel (32) are coupled to each other, and the other end of the front flow channel (31) is coupled to the load The path (90) is engaged, and the other end of the rear flow channel (32) is engaged with the return hole (23) to form a circulation path; the plurality of rolling elements (4) are disposed in the circulation path; wherein the rolling element ( 4) The front flow channel (31) passes through the tooth peak (12) and enters the rear flow channel (32), as shown in the seventh figure.

In view of the above, the "industry availability" of this creation should be unquestionable. In addition, the characteristic techniques revealed in the examples in this case have not been seen in publications before, and have not been disclosed. The use, not only has the fact that the effect is improved as described above, but also has additional functions that cannot be neglected. Therefore, the "novelty" and "progressiveness" of the creation have been in compliance with the patent regulations, and the application for creating a patent is proposed according to law. Please give us a review and grant a patent as soon as possible.

The above description of the embodiments is intended to illustrate the present invention and is not intended to limit the present invention. Therefore, variations of numerical values and substitution of equivalent elements are still within the scope of the present invention.

1‧‧‧ long axis

11‧‧‧ rolling groove

12‧‧‧ tooth peak

2‧‧‧ nuts

21‧‧‧Perforation

211‧‧‧ rolling groove

22‧‧‧Installation slot

3‧‧‧End plug

31‧‧‧ front section runner

32‧‧‧After runner

90‧‧‧Load path

Claims (1)

An end plug type ball screw comprising: a long shaft extending in a direction into an elongated structure defining the extending direction as an axial direction, wherein the long axis surface is provided with a spiral rolling groove and a tooth peak; a nut having a through hole for the long shaft, the inner edge surface of the hole is provided with a rolling groove opposite to the rolling groove, the rolling groove and the rolling groove form a load path, and the axis direction of the hole is two Each of the end portions is provided with a mounting slot, the mounting slot is configured to cut at least two of the rolling slots, and the nut is provided with a return hole connecting the two mounting slots; the two ends are respectively disposed on the two mounting slots. The two end plugs are respectively provided with a front flow passage and a rear flow passage. One end of the front flow passage is connected with one end of the rear flow passage, and the other end of the front flow passage is connected with the load path, and the rear flow passage is connected. The other end is coupled to the return hole to form a circulation path; the plurality of rolling elements are disposed in the circulation path; wherein the rolling element enters the rear flow path after the front flow path passes the tooth peak.