CN216241762U - Special precision locking nut for screw and spindle - Google Patents

Abstract

The utility model discloses a special precision locking nut for a screw rod and a spindle in the field of locking nuts, which comprises a nut body, an inner thread locking hole is machined in the middle of the nut body, and three guide holes are arranged on the outer wall of the nut body at equal intervals, so that the A locking slide column is arranged inside the guide hole, and a locking thread groove is integrally formed on one side of the inner thread locking hole on the locking slide column. In the utility model, by rotating the locking screw, the jacking cone head can be pushed to move, the jacking cone head is matched with the locking cone head, and the locking cone head is pushed to slide along the guide hole, so that the locking thread groove of the guide sliding column will cooperate with the nut The male thread of the nut is locked and fixed, and the locking operation of the nut can be realized by axially rotating the locking screw, which can solve the problem that the locking space of the nut is limited when the existing locking nut locks the screw and the spindle, and is extremely practical.

Description

Precision Lock Nuts for Screws and Spindles

technical field

The utility model relates to the field of locking nuts, in particular to a special precision locking nut for a screw rod and a spindle.

Background technique

A nut is a nut, a part that is screwed together with a bolt or screw for fastening. A component that must be used in all production and manufacturing machinery is divided into carbon steel, stainless steel, non-ferrous metals and other types according to different materials. Nuts are parts that tightly connect mechanical equipment. Through the inner threads, nuts and bolts of the same specification can be connected together.

When locking the screw rod or the main shaft, a lock nut needs to be used. When the lock nut is locked, the operation is extremely inconvenient due to the limited space, and it is inconvenient to lock. Therefore, those skilled in the art provide special precision locking nuts for screws and spindles to solve the problems raised in the above background art.

Utility model content

The purpose of the present invention is to provide a special precision locking nut for a screw rod and a main shaft, so as to solve the problems raised in the above-mentioned background art.

To achieve the above object, the utility model provides the following technical solutions:

The special precision locking nut for screw rod and spindle includes a nut body, the middle of the nut body is machined with internal thread locking holes, the outer wall of the nut body is provided with three guide holes at equal intervals, and the inside of the guide holes is provided with a locking spool The locking spool is integrally formed with a locking thread groove on one side of the inner thread locking hole, and the end of the nut body is located at the side of the guide hole with a locking thread hole, and the inside of the locking thread hole is provided with a locking thread groove. A locking screw, one end of the locking screw located in the guide hole is integrally formed with a locking cone head, and the top end of the locking slide column is integrally formed with a locking cone head.

Preferably, the locking screw is connected with the locking threaded hole through a thread, the locking sliding column is slidably connected with the guide hole, and the end of the locking screw is pressed against the conical head and matched with the locking conical head.

Preferably, an inner hexagonal counterbore is integrally formed at one end of the locking screw away from the tightening cone head, and four wrench locking grooves are evenly opened on the outer wall of the nut body.

Preferably, both the tightening cone head and the locking cone head have a 45° taper.

Preferably, both the nut body and the locking spool are made of 42CrMo and have been quenched and tempered.

Preferably, the inner thread locking hole is precision ground, and the thread precision of the inner thread locking hole is ISO4H.

Compared with the prior art, the beneficial effects of the present utility model are:

In the utility model, by rotating the locking screw, the jacking cone head can be pushed to move, the jacking cone head is matched with the locking cone head, and the locking cone head is pushed to slide along the guide hole, so that the locking thread groove of the guide sliding column will cooperate with the nut The male thread of the nut is locked and fixed, and the locking operation of the nut can be realized by axially rotating the locking screw, which can solve the problem that the locking space of the nut is limited when the existing locking nut locks the screw and the spindle, and is extremely practical.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the front sectional view of the utility model;

Fig. 3 is the right sectional view of the utility model;

FIG. 4 is a partial enlarged view of the guide hole in FIG. 3 of the present utility model.

In the figure: 1. Nut body; 2. Wrench locking groove; 3. Internal thread locking hole; 4. Locking slide; 5. Locking screw; 6. Locking thread groove; 7. Guide hole; 8. Locking thread hole ; 9. Hexagon countersunk hole; 10. Top-tight cone head; 11. Locking cone head.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Referring to FIGS. 1 to 4 , in the embodiment of the present utility model, the special precision locking nut for the screw rod and the main shaft includes a nut body 1, the middle of the nut body 1 is machined with an internal thread locking hole 3, and the outer wall of the nut body 1 is provided with three A guide hole 7 is provided inside the guide hole 7, and a locking spool 4 is arranged inside. The locking spool 4 is integrally formed with a locking thread groove 6 on the side of the inner thread locking hole 3, and the end of the nut body 1 is opened on the side of the guide hole 7 with a The locking screw hole 8 is provided with a locking screw 5 inside the locking screw hole 8. The locking screw 5 is located at one end of the guide hole 7 and is integrally formed with a tightening cone head 10, and the top of the locking spool 4 is integrally formed with a locking cone head 11.

The locking screw 5 is connected with the locking threaded hole 8 by threads, the locking spool 4 is slidably connected with the guide hole 7 , and the end of the locking screw 5 is pressed against the conical head 10 and matched with the locking conical head 11 .

By adopting the above technical solution, the locking cone 10 can be pushed to move by rotating the locking screw 5, and the locking cone 10 cooperates with the locking cone 11 to push the locking cone 11 to slide along the guide hole 7, so that the guiding spool is The locking thread groove 6 locks and fixes the male thread matched with the nut, and the locking operation of the nut can be realized by axially rotating the locking screw 5, which can solve the problem that when the existing locking nut locks the screw rod and the spindle, the nut is locked. It is extremely practical to lock the problem of limited space.

As a further solution of the present invention, one end of the locking screw 5 away from the top tightening cone head 10 is integrally formed with an inner hexagonal countersunk hole 9, which can facilitate the rotation of the locking screw 5, and four wrench locking grooves 2 are evenly opened on the outer wall of the nut body 1, The locking operation of this lock nut can be achieved.

As a further solution of the present invention, both the pressing cone 10 and the locking cone 11 have a taper of 45°, which can make the pressing cone 10 and the locking cone 11 closely fit.

In this embodiment, both the nut body 1 and the locking spool 4 are made of 42CrMo, and after quenching and tempering treatment, the hardness of the locking nut can be ensured.

In this embodiment, the inner thread locking hole 3 is precision ground, and the thread accuracy of the inner thread locking hole 3 is ISO4H, which can ensure the locking accuracy of the locking nut.

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (6)

1. Screw rod and special accurate lock nut of main shaft, including nut body (1), its characterized in that: nut body (1) middle part lathe work has internal thread locking hole (3), three guiding hole (7) have been seted up to equidistant on nut body (1) outer wall, guiding hole (7) inside is provided with locking traveller (4), locking traveller (4) are located internal thread locking hole (3) one side integrated into one piece has locking thread groove (6), nut body (1) tip is located locking screw hole (8) have been seted up to guiding hole (7) one side, inside locking screw (5) that is provided with of locking screw hole (8), locking screw (5) are located guiding hole (7) one end integrated into one piece has tight conical head (10) in top, locking traveller (4) top integrated into one piece has locking conical head (11).

2. The special precision locking nut for screw and spindle of claim 1, characterized in that: the locking screw (5) is in threaded connection with the locking threaded hole (8), the locking sliding column (4) is in sliding connection with the guide hole (7), and the end of the locking screw (5) abuts against a conical head (10) to be matched with the locking conical head (11).

3. The special precision locking nut for screw and spindle of claim 1, characterized in that: the locking screw (5) is far away from one end of the jacking conical head (10), an inner hexagonal counter bore (9) is integrally formed, and four wrench locking grooves (2) are uniformly formed in the outer wall of the nut body (1).

4. The special precision locking nut for screw and spindle of claim 1, characterized in that: the jacking conical head (10) and the locking conical head (11) are both in 45-degree conical degree.

5. The special precision locking nut for screw and spindle of claim 1, characterized in that: the nut body (1) and the locking sliding column (4) are both made of 42CrMo and are subjected to quenching and tempering.

6. The special precision locking nut for screw and spindle of claim 1, characterized in that: the internal thread locking hole (3) is subjected to precision grinding treatment, and the thread precision of the internal thread locking hole (3) is ISO 4H.

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