Ball screw pair
阅读说明:本技术 一种滚珠丝杠副 (Ball screw pair ) 是由 *** 齐鹏 于 2020-07-13 设计创作,主要内容包括:本发明涉及丝杠领域,具体的说是一种滚珠丝杠副,包括丝杆、螺母滚珠结构、限位结构、密封安装结构和注油结构,所述螺母滚珠结构连接于丝杆,螺母滚珠结构包括安装板、螺母和滚珠,丝杆上螺纹连接螺母,螺母内部侧面设有螺旋式容积腔,螺旋式容积腔内部填充有若干数量的滚珠,螺母一侧面连接安装板;所述限位结构连接于丝杆;所述密封安装结构连接于螺母滚珠结构,密封安装结构包括密封凸环、密封圈和第一十字螺栓。本发明提供的滚珠丝杠副具有通过密封安装结构,能够更换损坏密封圈,能够再次使用整个螺母滚珠结构,密封圈上连接密封凸环能够塞入到环形槽的内部,使得螺母、安装板分别与密封圈贴合处缝隙被添堵,能够提高密封性的优点。(The invention relates to the field of lead screws, in particular to a ball screw pair, which comprises a lead screw, a nut ball structure, a limiting structure, a sealing installation structure and an oil injection structure, wherein the nut ball structure is connected with the lead screw and comprises an installation plate, a nut and balls; the limiting structure is connected to the screw rod; the sealing installation structure is connected to the nut ball structure and comprises a sealing convex ring, a sealing ring and a first cross bolt. The ball screw pair provided by the invention has the advantages that the damaged sealing ring can be replaced through the sealing installation structure, the whole nut ball structure can be reused, the sealing convex ring connected to the sealing ring can be plugged into the annular groove, gaps at the joint parts of the nut and the installation plate and the sealing ring are plugged, and the sealing property can be improved.)
1. The ball screw pair is characterized by comprising a screw (1), a nut ball structure (2), a limiting structure (3), a sealing installation structure (4) and an oil injection structure (5), wherein the nut ball structure (2) is connected to the screw (1), the nut ball structure (2) comprises an installation plate (21), a nut (23) and balls (24), the screw (1) is in threaded connection with the nut (23), a spiral volume cavity is formed in the inner side surface of the nut (23), a plurality of balls (24) are filled in the spiral volume cavity, and one side surface of the nut (23) is connected with the installation plate (21); the limiting structure (3) is connected to the screw rod (1); the sealing and mounting structure (4) is connected to the nut ball structure (2), the sealing and mounting structure (4) comprises a sealing convex ring (41), a sealing ring (44) and a first cross bolt (45), the non-adjacent sides of the nut (23) and the mounting plate (21) are respectively provided with the sealing ring (44), the non-adjacent sides of the nut (23) and the mounting plate (21) are provided with an annular groove (43), one side wall of the sealing ring (44) is connected to the sealing convex ring (41) matched with the center of the annular groove (43), a plurality of threaded holes (42) which are arranged in an annular mode are embedded in the side wall of the annular groove (43), and the first cross bolt (45) sequentially penetrates through the sealing ring (44) and the sealing convex ring (41) and is in threaded connection; and the oil injection structure (5) is connected to the nut ball structure (2).
2. The ball screw assembly according to claim 1, wherein the mounting plate (21) is provided with a plurality of mounting holes (22) arranged around the outer side surface.
3. The ball screw pair according to claim 1, wherein the limiting structure (3) comprises L-shaped pressing rods (31), a positioning tube (32), springs (33) and a telescopic sleeve (34), the two ends of the screw (1) are connected with the positioning tube (32), two L-shaped pressing rods (31) are symmetrically arranged inside the positioning tube (32), the adjacent side walls of the two L-shaped pressing rods (31) are connected through a plurality of springs (33), the vertical end of each L-shaped pressing rod (31) penetrates through the side surface of the positioning tube (32) and is in sliding connection with the side surface of the positioning tube (32), and the horizontal end side walls of the two L-shaped pressing rods (31) are connected through the telescopic sleeve (34).
4. The ball screw pair according to claim 3, characterized in that the outer diameter of the positioning tube (32) is smaller than the outer diameter of the screw (1), larger than the length of the nut (23) the thickness of the mounting plate (21) and smaller than the length of the positioning tube (32).
5. The ball screw pair according to claim 1, wherein the oil injection structure (5) comprises a groove (52), a second cross bolt (53), an oil injection hole (54) and an oil storage cavity (55), the oil storage cavity (55) is arranged inside the nut (23), the groove (52) is arranged on the outer side surface of the nut (23), the oil injection hole (54) communicated with the oil storage cavity (55) is arranged at the bottom inside the groove (52), the oil storage cavity (55) is communicated with the spiral volume cavity, and the second cross bolt (53) is in threaded connection with the oil injection hole (54); a sealing plug (51) is plugged into the groove (52).
Technical Field
The invention relates to the field of lead screws, in particular to a ball screw pair.
Background
The ball screw pair is also known as a ball screw pair and a ball screw pair. Is composed of a screw rod and a nut which are matched. The transmission device is the transmission device with highest precision and most common use in the current transmission machinery. When moving an object, it is generally necessary to transmit the motion generated by the power directly or indirectly through another mechanism to the final moving part. Taking an engine as an example, a piston moves up and down in the engine due to combustion of gasoline, and is finally transmitted to wheels through an intermediate mechanism to generate rotary motion.
The installation sealing washer on the roller bearing lead screw is vice at present often adopts the adhesion of glue mode, need change when the sealing washer damage process, and the glue adhesion causes the installation position easily to have remains, influences new sealing washer installation, and the glue adhesion sealing washer operation of droing comparatively loaded down with trivial details, difficult clearance. Therefore, there is a need to provide a new ball screw assembly to solve the above-mentioned technical problems.
Disclosure of Invention
The invention provides a ball screw pair aiming at the problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a ball screw pair comprises a screw rod, a nut ball structure, a limiting structure, a sealing installation structure and an oil injection structure, wherein the nut ball structure is connected with the screw rod and comprises an installation plate, a nut and balls; the limiting structure is connected to the screw rod; the sealing and mounting structure is connected with the nut ball structure and comprises a sealing convex ring, a sealing ring and a first cross bolt, the sealing ring is arranged on the side surfaces, which are not adjacent to the mounting plate, of the nut, the annular groove is formed in the side surfaces, which are not adjacent to the mounting plate, of the nut, one side wall of the sealing ring is connected with the sealing convex ring matched with the annular groove center, a plurality of threaded holes which are arranged in an annular mode are embedded in the side wall; the oiling structure is connected with the nut ball structure.
Preferably, the outer side surface of the mounting plate is provided with a plurality of mounting holes which are arranged in a surrounding manner.
Preferably, limit structure includes L shape depression bar, registration arm, spring and telescopic sleeve, and the registration arm is connected at the both ends of lead screw, and the inside of registration arm is equipped with the L shape depression bar that two symmetries set up, and the lateral wall that two L shape depression bars are adjacent passes through a plurality of spring coupling, and the vertical end of L shape depression bar runs through the registration arm side and with registration arm side sliding connection, and two L shape depression bar horizontal end lateral walls pass through telescopic sleeve and connect.
Preferably, the outer diameter of the positioning tube is smaller than that of the screw rod, larger than the thickness of the length mounting plate of the nut and smaller than the length of the positioning tube.
Preferably, the oiling structure includes recess, second cross bolt, oil filler point and oil storage chamber, and the inside of nut is equipped with the oil storage chamber, and the nut lateral surface is equipped with the recess, and the bottom is equipped with and oil storage chamber intercommunication oil filler point in the recess, oil storage chamber and spiral volume chamber intercommunication, the inside threaded connection second cross bolt of oil filler point, the sealing plug has been filled in to the recess inside.
Compared with the related art, the ball screw pair provided by the invention has the following beneficial effects:
the invention provides a ball screw assembly:
(1) the invention provides a ball screw pair, which prevents the lead screw from rotating for a long time through a limiting structure, so that the whole nut ball structure is completely separated from the lead screw, and the protruding area of an L-shaped pressure lever can be plugged into the positioning tube by installing two L-shaped pressure levers which are symmetrically arranged, so that the dismounting process or the mounting process of the nut ball structure is ensured.
(2) The invention provides a ball screw pair, which can replace a damaged sealing ring through a sealing installation structure, can reuse the whole nut ball structure, and is characterized in that a sealing convex ring connected to the sealing ring can be plugged into the annular groove, so that gaps at the joint parts of a nut and an installation plate and the sealing ring are plugged respectively, and the sealing property can be improved; through the oiling structure, pour into proper amount lubricating oil into to the oil filler point with the syringe for the ball contact mixes, improves frictional force, and reduces and go up the rusty damage possibility, and the setting of second cross bolt does not produce the arch in the inside of recess.
Drawings
FIG. 1 is a schematic structural diagram of a ball screw assembly according to a preferred embodiment of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
fig. 3 is a partially enlarged structural view of a portion B shown in fig. 1.
Reference numbers in the figures: 1. a screw rod; 2. a nut ball structure; 3. a limiting structure; 4. a seal mounting structure; 5. an oil injection structure; 21. mounting a plate; 22. mounting holes; 23. a nut; 24. a ball bearing; 31. an L-shaped compression bar; 32. a positioning tube; 33. a spring; 34. a telescoping sleeve; 41. a sealing convex ring; 42. a threaded hole; 43. an annular groove; 44. a seal ring; 45. a first cross bolt; 51. a sealing plug; 52. a groove; 53. a second cross bolt; 54. an oil filler hole; 55. an oil storage chamber.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1, fig. 2 and fig. 3 in combination, a ball screw assembly includes a
Referring to fig. 1, the outer side of the
Referring to fig. 1 and 2, the
Referring to fig. 1, the outer diameter of the
Referring to fig. 1,
The working principle is as follows: the accessible is rotatory in proper order and is twisted out
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
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