CN215980679U - High-precision wear-resistant ball screw - Google Patents

Abstract

The utility model discloses a high-precision wear-resistant ball screw, which comprises a screw body and a screw nut, wherein a ball track is arranged on the screw body, the screw nut consists of two nut supports which are detachably connected, the inner side wall of the screw nut is provided with a ball groove, balls matched with the ball track are arranged in the ball groove, the two nut supports are respectively provided with a positioning mechanism which is matched with each other, the two nut supports are respectively provided with a limiting bulge and a groove which are matched with each other, and the limiting bulge and the groove are both positioned on the outer side of the ball groove. According to the ball screw, the screw nut is composed of the two nut supports, so that when balls are mutually extruded to cause abrasion or damage, the two nut supports are disassembled by loosening the bolt, the damaged balls are disassembled and replaced, the service life of the ball screw is prolonged, and the screw nut is convenient to connect with external accessories due to the fact that the mounting hole is formed in the screw nut.

Description

High-precision wear-resistant ball screw

Technical Field

The utility model relates to the technical field of ball screws, in particular to a high-precision wear-resistant ball screw.

Background

The ball screw consists of a screw rod and a nut, is the most commonly used transmission element on tool machinery and precision machinery, can convert rotary motion into linear motion, is further extension and development of the Achrom screw, and has important significance in changing a bearing from sliding motion to rolling motion.

However, most ball screws, traditional ball are installed in the ball channel, when the screw nut rotates again, the problem of mutual extrusion of the balls can occur, most of the existing screw nuts are integrally formed, so that the balls are worn or damaged, and then are inconvenient to replace, meanwhile, the screw nut is inconvenient to connect with external accessories, and the practicability is not high, so that the high-precision wear-resistant ball screw is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in order to solve the problems, a high-precision wear-resistant ball screw is provided.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a wear-resisting type ball screw of high accuracy, includes lead screw body and screw-nut, the ball track has been seted up on the lead screw body, screw-nut comprises two nut branches that can dismantle the connection, the ball groove has been seted up to the screw-nut inside wall, the ball inslot be equipped with ball track matched with ball, two be equipped with the positioning mechanism who mutually supports on the nut branch respectively, two be equipped with spacing arch and the recess of mutually supporting on the nut branch respectively, spacing arch and recess all are located the outside in ball groove.

Preferably, the positioning mechanism comprises a positioning rod and a positioning hole, the positioning rod and the positioning hole are respectively arranged on one side, close to each other, of the two nut supports, and the positioning rod and the positioning hole are matched in size.

Preferably, the two nut supports are fixedly connected with mounting seats, and the two mounting seats are connected through bolts.

Preferably, the flange of the feed screw nut is provided with a mounting hole.

Preferably, a gasket is arranged between the two nut supports in a cushioning mode.

Preferably, the lead screw body includes the stratum basale, the outside of stratum basale is equipped with the anticorrosive coating, the anticorrosive coating includes glass steel layer and resin coating, the outside of anticorrosive coating is equipped with the wearing layer, the wearing layer includes alkyd magnetic paint layer, polyurethane layer and polyurethane paint layer.

Preferably, the glass fiber reinforced plastic layer is positioned on the outer surface of the anti-corrosion layer, and the inner surface of the glass fiber reinforced plastic layer is connected with the outer surface of the resin coating through acrylic acid grafted viscose fibers.

Preferably, the alkyd magnetic paint layer is positioned on the inner side of the polyurethane paint layer, and the polyurethane paint layer is positioned on the inner side of the polyurethane paint layer.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

this application is through forming screw-nut by two nut supporting parts that can dismantle the connection, make after ball extrudees each other and causes wearing and tearing or damage, unpack two nut supporting parts apart through unscrewing the bolt, dismantle the ball that damages and change, rethread positioning mechanism mutually supports, insert the downthehole realization location of locating lever, prevent the ball off tracking in the recess is inserted to spacing arch simultaneously, it is fixed with two nut supporting parts to screw up the bolt, ball screw's life has been prolonged, the mounting hole has been seted up in screw-nut, make screw-nut be convenient for be connected with external part, ball screw's application range has been improved.

Drawings

FIG. 1 illustrates a cross-sectional view of an overall structure provided in accordance with an embodiment of the present invention;

FIG. 2 illustrates a side cross-sectional view of a nut body construction provided in accordance with an embodiment of the present invention;

FIG. 3 illustrates a cross-sectional view of a lead screw body structure provided in accordance with an embodiment of the present invention;

FIG. 4 illustrates a cross-sectional view of a corrosion protection layer structure provided in accordance with an embodiment of the present invention;

fig. 5 shows a cross-sectional view of a wear-resistant layer structure provided according to an embodiment of the utility model.

Illustration of the drawings:

1. a screw rod body; 101. a base layer; 102. an anticorrosive layer; 10201. a glass fiber reinforced plastic layer; 10202. a resin coating layer; 103. a wear layer; 10301. an alkyd magnetic paint layer; 10302. a polyurethane layer; 10303. a polyurethane coating layer; 2. a feed screw nut; 3. a ball track; 4. a ball groove; 5. a ball bearing; 6. mounting holes; 7. a mounting seat; 8. a bolt; 9. positioning a rod; 10. positioning holes; 11. a limiting bulge; 12. and (4) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution:

a high-precision wear-resistant ball screw comprises a screw body 1 and a screw nut 2, wherein a ball track 3 is arranged on the screw body 1, the screw nut 2 consists of two nut supports which are detachably connected, a ball groove 4 is arranged on the inner side wall of the screw nut 2, balls 5 matched with the ball track 3 are arranged in the ball groove 4, two mutually matched positioning mechanisms are respectively arranged on the two nut supports, two mutually matched limiting bulges 11 and grooves 12 are respectively arranged on the two nut supports, the limiting bulges 11 and the grooves 12 are both positioned on the outer side of the ball groove 4, the screw nut 2 consists of two nut supports which are detachably connected, when the balls 5 are mutually extruded to cause abrasion or damage, the two nut supports are disassembled, the damaged balls 5 are disassembled and replaced, the positioning is realized by mutual matching of the positioning mechanisms, the limiting bulges 11 are inserted into the grooves 12 to prevent the balls 5 from deviating, the service life of the ball screw is prolonged.

Specifically, as shown in fig. 1, fig. 2 and fig. 3, positioning mechanism includes locating lever 9 and locating hole 10, locating lever 9 and locating hole 10 set up respectively and are close to one side each other at two nut branches, the size of locating lever 9 and locating hole 10 is mutually supported, equal fixedly connected with mount pad 7 on two nut branches, connect through bolt 8 between two mount pads 7, mounting hole 6 has been seted up on screw nut 2's the flange, the pad is equipped with the gasket between two nut branches, two nut branches pass through bolt 8 and connect, convenient to detach, mounting hole 6 has been seted up on screw nut 2, make screw nut 2 be convenient for be connected with external parts, ball screw's application range has been improved.

Specifically, as shown in fig. 1, 4 and 5, the lead screw body 1 includes a substrate layer 101, an anti-corrosion layer 102 is disposed on an outer side of the substrate layer 101, the anti-corrosion layer 102 includes a glass fiber reinforced plastic layer 10201 and a resin coating layer 10202, an anti-wear layer 103 is disposed on an outer side of the anti-corrosion layer 102, the anti-wear layer 103 includes an alkyd magnetic paint layer 10301, a polyurethane layer 10302 and a polyurethane paint layer 10303, the glass fiber reinforced plastic layer 10201 is disposed on an outer surface of the anti-corrosion layer 102, an inner surface of the glass fiber reinforced plastic layer 10201 is connected with an outer surface of the resin coating layer 10202 through acrylic acid grafted viscose, the alkyd magnetic paint layer 10301 is disposed on an inner side of the polyurethane layer 10302, the polyurethane layer 10302 is disposed on an inner side of the polyurethane paint layer 10303, both the glass fiber reinforced plastic layer 10201 and the resin coating layer 10202 have a good anti-corrosion effect, and can prevent the lead screw body 1 from being damaged due to premature corrosion, and the alkyd magnetic paint layer 10301, the polyurethane layer 10302 and the alkyd magnetic paint layer 10302 are used in cooperation with the polyurethane paint layer 10303, a good wear-resistant effect is achieved.

In conclusion, the wear-resisting type ball screw of high accuracy that this embodiment provided, after ball 5 extrudees each other and causes wearing and tearing or damage, unpack apart two nut branches through unscrewing bolt 8, dismantle the ball 5 that damages and change, rethread positioning mechanism mutually supports, realize the location in inserting locating hole 10 by locating lever 9, spacing arch 11 prevents ball 5 off tracking in inserting recess 12 simultaneously, it is fixed with two nut branches to tighten bolt 8, ball 5's change has been realized promptly, the setting up of mounting hole 6 makes screw nut 2 can be connected with external parts.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The utility model provides a wear-resisting type ball screw of high accuracy, includes screw body (1) and screw-nut (2), its characterized in that, ball track (3) have been seted up on screw body (1), screw-nut (2) are by two nut branches that can dismantle the connection constitute, ball groove (4) have been seted up to screw-nut (2) inside wall, be equipped with in ball groove (4) with ball track (3) matched with ball (5), two be equipped with mutually supporting positioning mechanism on the nut branches respectively, two be equipped with spacing arch (11) and recess (12) of mutually supporting on the nut branches respectively, spacing arch (11) and recess (12) all are located the outside in ball groove (4).

2. A high-precision wear-resistant ball screw according to claim 1, wherein the positioning mechanism comprises a positioning rod (9) and a positioning hole (10), the positioning rod (9) and the positioning hole (10) are respectively arranged at the side where the two nut supports are close to each other, and the positioning rod (9) and the positioning hole (10) are mutually matched in size.

3. A high-precision wear-resistant ball screw according to claim 1, wherein the two nut supports are fixedly connected with mounting seats (7), and the two mounting seats (7) are connected with each other through bolts (8).

4. A high accuracy wear resistant ball screw according to claim 1, characterized in that the flange of said screw nut (2) is provided with mounting holes (6).

5. A highly accurate wear-resistant ball screw according to claim 1, wherein a spacer is interposed between two of said nut supports.

6. A high-precision wear-resistant ball screw according to any one of claims 1-5, wherein the screw body (1) comprises a substrate layer (101), the outer side of the substrate layer (101) is provided with an anticorrosive layer (102), the anticorrosive layer (102) comprises a glass fiber reinforced plastic layer (10201) and a resin coating layer (10202), the outer side of the anticorrosive layer (102) is provided with a wear-resistant layer (103), and the wear-resistant layer (103) comprises an alkyd magnetic paint layer (10301), a polyurethane layer (10302) and a polyurethane paint layer (10303).

7. A high accuracy wear resistant ball screw according to claim 6, characterized in that said glass fiber reinforced plastic layer (10201) is located at the outer surface of the corrosion resistant layer (102), the inner surface of said glass fiber reinforced plastic layer (10201) and the outer surface of the resin coating (10202) are connected by acrylic grafted viscose fiber.

8. A highly accurate wear-resistant ball screw according to claim 6, wherein said alkyd magnetic paint layer (10301) is located on the inner side of polyurethane paint layer (10302), and said polyurethane paint layer (10302) is located on the inner side of polyurethane paint layer (10303).

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