CN211423302U

CN211423302U - Novel ball screw

Info

Publication number: CN211423302U
Application number: CN202020024982.9U
Authority: CN
Inventors: 梁军鹏; 吴文涛; 陈海平
Original assignee: Lishui Yingte Bearing Co ltd
Current assignee: Lishui Yingte Bearing Co ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-09-04
Anticipated expiration: 2030-01-07

Abstract

The utility model discloses a novel ball screw, including nut, ball and lead screw, the nut passes through the ball and links to each other with the lead screw rotation, the left end rigid coupling of fixed block is at the top right side outer wall of sealed pad, two the inboard rigid coupling in left side of fixture block has compression spring, the right side outer wall of fixture block all with the internal surface looks joint of draw-in groove, the draw-in groove is seted up at the left side top inner wall of nut. This novel ball screw, sealed the pad seals up the lead screw, it is difficult for droing to cut sealed pad, the difficult problem that the dustproof piece is not hard up can appear in having solved inevitable, if not hard up just can not play dustproof effectual problem, the piston prevents lubricating oil to splash to the oil filler point is sealed, and two carousels can control annotate like the flow of lubricating oil, solved current lead screw when lubricated the lead screw, can make lubricating oil splash in disorder along with the high-speed work of lead screw, can not control the lubricating oil flow simultaneously, cause the problem of lubricating oil waste or the too much influence steady operation of lubricating oil on the lead screw.

Description

Novel ball screw

Technical Field

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

Background

The ball screw is a high-precision transmission device, adopts rolling friction screw to replace sliding friction screw, has the advantages of small abrasion, high transmission efficiency, stable transmission, long service life, high precision, low temperature rise and the like, and brings great benefit to the performance improvement of an electromechanical integrated system because the ball screw has the outstanding advantages of small motion friction, convenience in eliminating transmission clearance and the like.

For example, patent No. 201820322134.9 discloses a novel ball screw, which belongs to the technical field of ball screws, and comprises a screw rod, a nut sleeved on the screw rod and balls; the surface of lead screw is equipped with first helicla flute, the interior anchor ring of nut be equipped with the second helicla flute that first helicla flute corresponds, though this lead screw prevents effectively that external debris etc. from getting into the spiral track, but dustproof because long-time use, difficult problem that can appear becoming flexible, if become flexible just can not play dustproof effectual problem, there is current lead screw when lubricated the lead screw simultaneously, lack seal structure, can make lubricating oil spatter in disorder along with the high-speed work of lead screw, can not control the lubricating oil flow simultaneously, cause the problem that lubricating oil is extravagant or lubricating oil too much influences the steady operation on the lead screw.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel ball screw to solve the dustproof piece that proposes in the above-mentioned background art because long-time use, can inevitably appear not hard up problem, if not hard up just can not play dustproof effectual problem.

In order to achieve the above object, the utility model provides a following technical scheme: a novel ball screw comprises a nut, balls and a screw rod, wherein the nut is rotationally connected with the screw rod through the balls, and a fixing mechanism is arranged on the left side above the nut;

the fixing mechanism comprises a sealing gasket, a clamping block, a pin shaft, a fixing block, a compression spring and a clamping groove;

the outer wall of the sealing gasket is attached to the inner wall above the left side of the nut, the clamping blocks are arranged on the upper side and the lower side of the right end of the sealing gasket, the clamping blocks are connected with the fixed block in a rotating mode through the pin shafts, the left end of the fixed block is fixedly connected to the outer wall of the right side of the sealing gasket, the compression spring is fixedly connected to the inner side of the left side of the clamping block, the outer wall of the right side of the clamping block is connected with the inner surface of the clamping groove in a clamping mode, and the. Design like this, strengthened the leakproofness between lead screw and the nut, and prevent that sealed the pad from droing, more be favorable to sealed quick dismantlement of pad and installation stability.

Preferably, the fixture block, the pin shaft and the fixture block are symmetrically distributed up and down around the center line of the compression spring. By the design, the sealing gasket is more stably installed.

Preferably, the thickness of the sealing gasket is 2-3 cm. By the design, the sealing performance of the gap between the screw rod and the nut is enhanced.

Preferably, the outer wall of the screw rod is plated with a first coating, a second coating and a third coating in sequence. By the design, the service life of the screw rod is prolonged.

Preferably, a lubricating mechanism is arranged above the right side of the nut;

the lubricating mechanism comprises a piston and an oil filling hole;

the outer wall of the lower portion of the piston is in interference fit with the inner surface of the upper portion of the oil filling hole, and the oil filling hole is formed in the inner wall of the upper portion of the right side of the nut. By the design, the lubricating property of the screw rod is enhanced, and the screw rod is prevented from being abraded.

Preferably, the lower inner diameter of the oil filling hole is 0.1-0.2 mm. By the design, the lubricating oil can be conveniently injected.

Preferably, the left side and the right side of the upper surface of the oil filling hole are both provided with a sealing mechanism;

the sealing mechanism comprises a rotary disc, a rotary shaft, a transverse block, a torsion spring and a rubber pad;

the left side the carousel rotates with the crosspiece through the pivot and links to each other, the left end rigid coupling of crosspiece is internal surface on the left side of oil filler point, the left side below front end rigid coupling of carousel has torque spring, torque spring's left side top rigid coupling is at the left side top front end of crosspiece, the equal rigid coupling of right-hand member of carousel has the rubber pad. By such design, the injection amount of the lubricating oil can be controlled.

Preferably, the thickness of the two rubber mats is 1-2 cm. By means of the design, the injection amount of lubricating oil and the sealing performance of the lubricating oil to the oil injection hole can be controlled.

Compared with the prior art, the beneficial effects of the utility model are that: this novel ball screw, compared with traditional technique, has following advantage:

through sealed the pad, the fixture block, the round pin axle, the fixed block, cooperation between compression spring and the draw-in groove, sealed pad cover seals the gap between nut and the lead screw on the lead screw, two fixture blocks rotate extrusion compression spring to the inboard through the round pin axle on the fixed block respectively this moment, and make for two fixture block outside tension through compression spring make two fixture block joints in the draw-in groove on the nut, make sealed pad fix on the nut, prevent sealed pad and drop, solved current dustproof spare because long-time use, can hard up the not hard up problem of appearance, if not hard up just can not play dustproof effectual problem.

Through the cooperation between piston, oil filler point, carousel, pivot, horizontal piece, torque spring and the rubber pad, the piston prevents lubricating oil to the oil filler point is sealed to splash, and two carousels can control to annotate like the flow of lubricating oil, have solved current lead screw when lubricated the lead screw, lack seal structure, can make lubricating oil splash in disorder along with the high-speed work of lead screw, can not control the lubricating oil flow simultaneously, cause lubricating oil extravagant or the problem that lubricating oil too much influences the steady operation on the lead screw.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the first, second and third coatings of FIG. 1;

FIG. 3 is a schematic view of the gasket and nut of FIG. 1;

fig. 4 is a schematic structural view of the oil injection hole, the turntable and the rubber pad in fig. 1.

In the figure: 1. the device comprises a nut, 2, a ball, 3, a screw rod, 4, a fixing mechanism, 401, a sealing gasket, 402, a fixture block, 403, a pin shaft, 404, a fixing block, 405, a compression spring, 406, a clamping groove, 5, a lubricating mechanism, 501, a piston, 502, an oil filling hole, 6, a sealing mechanism, 601, a turntable, 602, a rotating shaft, 603, a cross block, 604, a torsion spring, 605, a rubber gasket, 7, a first coating, 8, a second coating, 9 and a third coating.

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.

Referring to fig. 1-4, the present invention provides a technical solution: a novel ball screw comprises a nut 1, a ball 2 and a screw 3, wherein the nut 1 is rotationally connected with the screw 3 through the ball 2, the nut 1 rotates on the screw 3 through the ball 2, a fixing mechanism 4 is installed on the left side above the nut 1, the fixing mechanism 4 comprises a sealing gasket 401, a clamping block 402, a pin shaft 403, a fixing block 404, a compression spring 405 and a clamping groove 406, the outer wall of the sealing gasket 401 is attached to the inner wall above the left side of the nut 1, the sealing gasket 401 seals a gap between the nut 1 and the screw 3 to prevent impurities from entering, the sealing gasket 401 is made of fluororubber, the upper side and the lower side of the right end of the sealing gasket 401 are respectively provided with the clamping block 402, the upper clamping block 402 is rotationally connected with the fixing block 404 through the pin shaft 403, the clamping blocks 402 on the upper side and the lower side respectively rotate on the fixing block 404 through the pin shaft, the left end of the fixing, the compression spring 405 is fixedly connected to the inner sides of the left sides of the two clamping blocks 402, the compression spring 405 is extruded by the inner sides of the two clamping blocks 402 in a rotating mode, the two clamping blocks 402 are reset through the elasticity of the compression spring 605, the outer wall of the right side of each clamping block 402 is clamped with the inner surface of the corresponding clamping groove 406, the clamping grooves 406 are formed in the inner wall of the upper left side of the nut 1, the sealing gasket 401 can be fixed in the nut 1 through the two clamping blocks 402, the sealing gasket 401 is convenient to detach and replace, the clamping blocks 402, the pin shafts 403 and the fixing blocks 404 are symmetrically distributed in the vertical direction by taking the center line of the compression spring 405 as.

The outer wall of the screw rod 3 is sequentially plated with a first coating 7, a second coating 8 and a third coating 9, the first coating 7 is epoxy powder, the epoxy powder is thermosetting and non-toxic, and has excellent chemical corrosion resistance and higher mechanical performance, particularly, the wear resistance and the adhesive force are optimal, the second coating 8 is polyethylene, the polyethylene is odorless and non-toxic, and has excellent corrosion resistance, the third coating 9 is an alloy, the strength of the screw rod 3 can be obviously improved, the pressure resistance of the screw rod 3 is enhanced, and meanwhile, the corrosion resistance of the screw rod 3 can also be improved.

Lubrication mechanism 5 is installed to nut 1's right side top, lubrication mechanism 5 includes piston 501 and oil filler point 502, piston 501's below outer wall and oil filler point 502's top internal surface interference fit, piston 501 makes oil filler point 502 sealed, prevents during impurity gets into lubricating oil, influences the quality of lubricating oil, oil filler point 502 sets up the right side top inner wall at nut 1, lubricating oil in the oil filler point 502 makes lead screw 3 more lubricated and makes lead screw 3 be difficult to the wearing and tearing, the below internal diameter of oil filler point 502 is 0.1-0.2 mm.

The left side and the right side of the upper surface of the oil filling hole 502 are respectively provided with a sealing mechanism 6, the sealing mechanisms 6 comprise a rotary table 601, a rotary shaft 602, a cross block 603, a torsion spring 604 and a rubber pad 605, the rotary table 601 at the left side is rotatably connected with the cross block 603 through the rotary shaft 602, the rotary tables 601 at the two sides are respectively rotated on the cross block 603 through the rotary shaft 602, the two rotary tables 601 are both semicircles and can seal the oil filling hole 502, the left end of the cross block 603 is fixedly connected with the inner surface on the left side of the oil filling hole 502, the oil filling hole 502 supports the two cross blocks 603, the front end at the lower part of the left side of the rotary table 601 is fixedly connected with the torsion spring 604, the rotary table 601 rotates downwards to extrude the torsion spring 604, at the moment, the two rotary tables 601 open the oil filling hole 502, lubricating oil is injected onto the screw rod 3, the rotary table, the top end of the left side of the torsion spring 604 is fixedly connected with the front end of the upper left side of the cross block 603, the cross block 603 supports the torsion spring 604, rubber pads 605 are fixedly connected with the right end of the turntable 601, the two rubber pads 605 are attached to enable the sealing performance of the oil filling hole 502 to be better, and the thickness of the two rubber pads 605 is 1-2 cm.

When the novel ball screw is used, firstly, a nut 1 and a ball 2 are manually installed on a screw rod 3, a sealing gasket 401 is sleeved on the screw rod 3 to seal a gap between the nut 1 and the screw rod 3, at the moment, two clamping blocks 402 rotate inwards on a fixed block 404 through pin shafts 403 to extrude a compression spring 405, outward tension of the two clamping blocks 402 is enabled to enable the two clamping blocks 402 to be clamped in clamping grooves 406 on the nut 1 through elasticity of the compression spring 405, the sealing gasket 401 is fixed on the nut 1 to prevent the sealing gasket 401 from falling off, otherwise, the sealing gasket 401 can be rapidly disassembled by dragging the sealing gasket 401 outwards, lubricating oil is manually poured into an oil filling hole 502, a piston 501 is covered, the oil filling hole 502 is sealed to prevent impurities from entering the lubricating oil to influence the quality of the lubricating oil, when the lubricating oil needs to be filled into the screw rod 3, the piston 501 is manually pushed downwards, two turntables 601 are pushed through the, the two rotating discs 602 rotate downwards on the cross block 603 through the rotating shaft 602 respectively to extrude the torsion spring 604, the torsion spring 604 contracts to enable the two rotating discs 601 to drive the two rubber pads 605 to separate, at the moment, lubricating oil is injected into the screw rod 3, so that the screw rod 3 is more lubricated and is not easy to wear, when the lubricating oil is injected to a certain amount, the piston 501 is dragged downwards, and at the moment, the two rotating discs 601 are reset through the elasticity of the torsion spring 604 to continue to seal the oil filling hole 502.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", 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 simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel ball screw, includes nut (1), ball (2) and lead screw (3), its characterized in that: the nut (1) is rotationally connected with the screw rod (3) through a ball (2), and a fixing mechanism (4) is arranged on the left side above the nut (1);

the fixing mechanism (4) comprises a sealing gasket (401), a clamping block (402), a pin shaft (403), a fixing block (404), a compression spring (405) and a clamping groove (406);

the outer wall of sealed pad (401) is laminated with the left side top inner wall of nut (1) mutually, both sides all are equipped with fixture block (402), top about the right-hand member of sealed pad (401) fixture block (402) rotate with fixed block (404) through round pin axle (403) and link to each other, the left end rigid coupling of fixed block (404) is at the top right side outer wall of sealed pad (401), two the inboard rigid coupling in left side of fixture block (402) has compression spring (405), the right side outer wall of fixture block (402) all with the internal surface looks joint of draw-in groove (406), the left side top inner wall at nut (1) is seted up in draw-in groove (406).

2. The novel ball screw of claim 1, wherein: the fixture block (402), the pin shaft (403) and the fixture block (404) are symmetrically distributed on the upper side and the lower side by taking the center line of the compression spring (405) as the center.

3. The novel ball screw of claim 1, wherein: the thickness of the sealing gasket (401) is 2-3 cm.

4. The novel ball screw of claim 1, wherein: the outer wall of the screw rod (3) is sequentially plated with a first coating (7), a second coating (8) and a third coating (9).

5. The novel ball screw of claim 1, wherein: a lubricating mechanism (5) is arranged above the right side of the nut (1);

the lubricating mechanism (5) comprises a piston (501) and an oil hole (502);

the outer wall of the lower portion of the piston (501) is in interference fit with the inner surface of the upper portion of the oil filling hole (502), and the inner wall of the upper portion of the right side of the nut (1) is formed in the oil filling hole (502).

6. The novel ball screw of claim 5, wherein: the inner diameter of the lower part of the oil filling hole (502) is 0.1-0.2 mm.

7. The novel ball screw of claim 5, wherein: sealing mechanisms (6) are mounted on the left side and the right side of the upper surface of the oil filling hole (502);

the sealing mechanism (6) comprises a rotary disc (601), a rotating shaft (602), a cross block (603), a torsion spring (604) and a rubber pad (605);

the left side carousel (601) rotates with horizontal piece (603) through pivot (602) and links to each other, the left end rigid coupling of horizontal piece (603) is at the upper inner surface of the left side of oil filler point (502), the left side below front end rigid coupling of carousel (601) has torsion spring (604), the left side top rigid coupling of torsion spring (604) is at the left side top front end of horizontal piece (603), the equal rigid coupling of right-hand member of carousel (601) has rubber pad (605).

8. The novel ball screw of claim 7, wherein: the thickness of the two rubber pads (605) is 1-2 cm.