CN209977174U - Ball screw nut - Google Patents

Abstract

The utility model discloses a ball screw nut, which comprises a nut; the inside interlude of nut has the lead screw, the lead screw outside and nut inboard all are provided with the spout, the inside a plurality of balls that are provided with of spout, the inside circulating pipe that is provided with of nut, the nut upside is provided with the grease squirt, the grease squirt passes through the screw thread rotation and installs at the nut upside, the grease squirt bottom is passed the nut and is stretched into inside the circulating pipe, the inside upside of grease squirt is provided with the recess, recess internally mounted has into oil pipe, it is provided with the oil inlet to advance oil pipe upside, advance oil pipe bottom welding and have branch, inside the branch bottom stretches into the cavity, the cavity is located inside the grease squirt, cavity internally mounted has the spring, and the spring both ends weld in the inside bottom of. The utility model discloses a can pour into emollient into the circulator inside through the grease squirt, soften the surface of ball, reduce the frictional force on ball surface.

Description

Ball screw nut

Technical Field

The utility model relates to a ball screw accessory technical field specifically is a ball screw nut.

Background

The ball screw pair is an ideal transmission device for interconversion between rotary motion and linear motion, and is structurally characterized in that balls (serving as an intermediate transmission element) are arranged between screw nuts with spiral grooves to reduce friction, the balls inside the ball screw nuts collide with each other and rub on the surfaces after long-term use, and the smoothness of the surfaces of the balls is influenced, so that the friction force of the whole device is increased, and the normal use of the device is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ball screw nut to the ball that proposes in solving above-mentioned background art is long using the friction of surface collision each other, and surface smoothness rivers and lakes receive the influence, leads to the frictional force increase of whole device, influences the problem of the normal use of device.

In order to achieve the above object, the utility model provides a following technical scheme: a ball screw nut comprising a nut; the nut is characterized in that a countersunk hole is formed in one end of the nut, a screw rod is inserted into the nut, sliding grooves are formed in the outer side of the screw rod and the inner side of the nut, the sliding groove in the inner side of the nut corresponds to the sliding groove in the outer side of the screw rod, a plurality of balls are arranged in the sliding grooves, the balls are connected with the sliding grooves in a sliding manner, a circulating pipe is arranged in the nut, two ends of the circulating pipe are connected with the sliding groove in the nut in a penetrating manner, a front end cover is arranged at the front end of the nut and integrally arranged between the front end cover and the nut, a rear end cover is arranged at the rear end of the nut and slidably connected with the nut through threads, threads are arranged in the front end cover and the rear end cover, the threads in the front end cover and the rear end cover are mutually meshed with, the bottom of the oil ejector penetrates through the nut and stretches into the circulating pipe, a groove is formed in the upper side inside the oil ejector, an oil inlet pipe is installed inside the groove, an oil inlet is formed in the upper side of the oil inlet pipe, a supporting rod is welded to the bottom of the oil inlet pipe, the bottom of the supporting rod stretches into the cavity, the cavity is located inside the oil ejector, a spring is installed inside the cavity, and two ends of the spring are welded to the bottom of the cavity and the bottom of the supporting rod respectively.

Preferably, the inner sides of the front end cover and the rear end of the rear end cover are respectively provided with a rubber pad, and the rubber pads are adhered to the inner sides of the front end cover and the rear end of the rear end cover through adhesive glue.

Preferably, the contact position of the bottom end of the oil ejector and the nut is provided with a soft metal pad, and the upper end of the soft metal pad and the oil ejector are welded with each other.

Preferably, the oil inlet pipe is arranged in a T shape, the bottom end of the upper side of the oil inlet pipe is in mutual contact with the upper side of the upper end baffle, and the upper end baffle is welded at the bottom position inside the groove.

Preferably, the support rod stretches into the inner section of the cavity and is welded with the bottom baffle, and the diameter of the section of the bottom baffle is larger than that of the section of the through hole on the upper side of the cavity.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a can be with emollient through the grease squirt pour into the circulation intraduct into, soften the surface of ball, reduce the frictional force on ball surface, the rubber pad can be when the nut carries out reciprocating motion inside clearing up the spout, avoid inside dust or granule entering nut, adhere to on the ball surface, lead to the ball frictional force when rotating to increase, the texture of soft metal pad is comparatively soft, can contract after receiving pressure, space to between grease squirt and the nut is filled, make the more stability of grease squirt installation, the last end shield can block into the descending distance of oil pipe, avoid advancing inside unable stretching out of oil pipe embedding recess, the last migration distance of branch can be restricted to the bottom baffle, avoid branch to break away from the cavity, make into oil pipe automatic re-setting inefficacy.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the overall internal structure of the present invention;

fig. 3 is a schematic diagram of the internal structure of the oil injector of the present invention.

In the figure: 1. a nut; 2. a countersunk hole; 3. a rear end cap; 4. a front end cover; 5. an oil lubricator; 6. a circulation pipe; 7. a ball bearing; 8. a screw rod; 9. a chute; 10. a soft metal pad; 11. an oil inlet pipe; 12. an oil inlet; 13. a groove; 14. an upper end baffle plate; 15. a strut; 16. a bottom baffle; 17. a spring; 18. a cavity; 19. and (7) a rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: a ball screw nut includes a nut 1; a countersunk hole 2 is arranged at one end of a nut 1, a screw rod 8 is inserted in the nut 1, sliding grooves 9 are arranged on the outer side of the screw rod 8 and the inner side of the nut 1, the sliding groove 9 on the inner side of the nut 1 corresponds to the sliding groove 9 on the outer side of the screw rod 8, a plurality of balls 7 are arranged in the sliding grooves 9, the balls 7 are connected with the sliding grooves 9 in a sliding way, a circulating pipe 6 is arranged in the nut 1, two ends of the circulating pipe 6 are connected with the sliding groove 9 in the nut 1 in a penetrating way, a front end cover 4 is arranged at the front end of the nut 1, the front end cover 4 and the nut 1 are arranged integrally, a rear end cover 3 is arranged at the rear end of the nut 1, the rear end cover 3 is connected with the nut 1 in a sliding way through threads, threads are arranged in the front end cover 4 and the rear end cover 3, the threads in the front end cover, the bottom end of the oil ejector 5 penetrates through the nut 1 and stretches into the circulating pipe 6, the groove 13 is arranged on the upper side inside the oil ejector 5, the oil inlet pipe 11 is arranged inside the groove 13, the oil inlet pipe 11 is provided with the oil inlet 12 on the upper side, the supporting rod 15 is welded at the bottom end of the oil inlet pipe 11, the supporting rod 15 bottom end stretches into the cavity 18, the cavity 18 is located inside the oil ejector 5, the spring 17 is arranged inside the cavity 18, and the two ends of the spring 17 are respectively welded at the bottom end inside the cavity 18 and the bottom end of the.

Further, rubber pads 19 are arranged on the inner side of the front end cover 4 and the inner side of the rear end cover 3, the rubber pads 19 are adhered to the inner side of the front end cover 4 and the inner side of the rear end cover 3 through adhesive glue, the rubber pads 19 can clean the inner part of the sliding groove 9 when the nut 1 reciprocates, dust or particles are prevented from entering the inner part of the nut 1 and being adhered to the surface of the ball 7, and friction force of the ball 7 is increased when the ball 7 rotates.

Further, the contact position of the bottom end of the oil ejector 5 and the nut 1 is provided with a soft metal pad 10, the upper end of the soft metal pad 10 and the oil ejector 5 are welded to each other, the soft metal pad 10 is soft in texture, the soft metal pad can shrink after being subjected to pressure, and a gap between the oil ejector 5 and the nut 1 is filled, so that the oil ejector 5 is installed more stably.

Further, advance oil pipe 11 and set up for the T type, and advance oil pipe 11 upside bottom and 14 upsides of upper end baffle 14 that touch each other, upper end baffle 14 welds in the inside bottom position of recess 13, and upper end baffle 14 can block into oil pipe 11 descending distance, avoids advancing oil pipe 11 embedding recess 13 inside unable stretching out.

Further, the branch 15 stretches into 18 inside sections welding of cavity and has bottom baffle 16, and 16 tangent planes diameters of bottom baffle are greater than 18 upside through-hole tangent planes diameters of cavity, and bottom baffle 16 can restrict the last displacement distance of branch 15, avoids branch 15 to break away from cavity 18 for advance oil pipe 11 automatic re-setting and become invalid.

The working principle is as follows: lead screw 8 is rotated by driving system during the use, effect through ball 7 drives nut 1 forward rotation, when needing the oiling lubrication, press into oil pipe 11 with hard thing, it will be to descending to advance oil pipe 11, the end of producing oil that advances oil pipe 11 this moment will be absorbed in inside the runner, carry out the oiling through oil inlet 12, lubricating oil will be inside circulating pipe 6, upper end baffle 14 can block into the descending distance of oil pipe 11, avoid advancing oil pipe 11 and imbed inside unable the stretching out of recess 13, only need remove external force after the oiling is accomplished, the spring will promote branch 15 and drive into oil pipe 11 and rise, carry out self-sealing, bottom end baffle 16 can restrict branch 15's last migration distance, avoid branch 15 to break away from cavity 18, make into oil pipe 11 automatic re-setting inefficacy.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. A ball screw nut comprising a nut (1); the method is characterized in that: the nut is characterized in that a counter bore (2) is formed in one end of the nut (1), a lead screw (8) is inserted into the nut (1), sliding grooves (9) are formed in the outer side of the lead screw (8) and the inner side of the nut (1), the sliding grooves (9) in the inner side of the nut (1) correspond to the sliding grooves (9) in the outer side of the lead screw (8), a plurality of balls (7) are arranged in the sliding grooves (9), the balls (7) are connected with the sliding grooves (9) in the sliding grooves (1) in a sliding mode, a circulating pipe (6) is arranged in the nut (1), the two ends of the circulating pipe (6) are connected with the sliding grooves (9) in the nut (1) in a penetrating mode, a front end cover (4) is arranged at the front end of the nut (1), the front end cover (4) and the nut (1) are arranged in an integrated mode, a rear, the utility model discloses a circulating pipe, including front end housing (4) and rear end cap (3), front end housing (4) and rear end cap (3) inside all are provided with the screw thread, and front end housing (4) and rear end cap (3) inside screw thread and lead screw (8) outside spout (9) interlock each other, nut (1) upside is provided with grease squirt (5), grease squirt (5) are installed at nut (1) upside through the screw thread rotation, inside nut (1) is passed to grease squirt (5) bottom, the inside upside of grease squirt (5) is provided with recess (13), recess (13) internally mounted has into oil pipe (11), it is provided with oil inlet (12) to advance oil pipe (11) upside, it has branch (15) to advance oil pipe (11) bottom welding, branch (15) bottom is stretched into inside cavity (18), cavity (18) are located inside grease squirt (5), cavity (18) internally mounted has spring (17), and two ends of the spring (17) are respectively welded with the bottom end in the cavity (18) and the bottom end of the supporting rod (15).

2. The ball screw nut of claim 1, wherein: rubber pads (19) are arranged on the inner side of the front end cover (4) and the inner side of the rear end cover (3), and the rubber pads (19) are adhered to the inner side of the front end cover (4) and the inner side of the rear end cover (3) through adhesive glue.

3. The ball screw nut of claim 1, wherein: the bottom end of the oil ejector (5) is in contact with the nut (1) and provided with a soft metal pad (10), and the upper end of the soft metal pad (10) is welded with the oil ejector (5).

4. The ball screw nut of claim 1, wherein: the oil inlet pipe (11) is arranged in a T shape, the bottom end of the upper side of the oil inlet pipe (11) is in mutual contact with the upper side of the upper end baffle (14), and the upper end baffle (14) is welded at the position of the bottom end inside the groove (13).

5. The ball screw nut of claim 1, wherein: the supporting rod (15) stretches into the inner section of the cavity (18) and is welded with the bottom baffle (16), and the section diameter of the bottom baffle (16) is larger than that of the through hole on the upper side of the cavity (18).

Images