CN218235765U - Extrusion thin polished rod screw - Google Patents

Abstract

The utility model discloses an extrusion-molded thin polished rod screw, which comprises a screw body; further comprising: the screw cap is arranged at the front end of the screw body and is of a cylindrical structure; the thin polish rod is arranged in the middle of the screw body, and a screw cap is formed by extrusion with the thin polish rod; the screw thread, it sets up the end at thin polished rod, and the screw thread passes through gyro wheel roll forming, and through this kind of mode, thin polished rod position passes through mould extrusion, and the material does not change the material volume under the mould extrusion force, increases material plasticity and surface hardness, has solved polished rod screw because of torsional strength influences the problem of equipment work efficiency inadequately.

Description

Extrusion thin polished rod screw

Technical Field

The utility model relates to a polished rod screw technical field specifically is a thin polished rod screw of extrusion.

Background

The polished rod screw is a tool for fastening machine parts of an object step by utilizing the physics and mathematical principles of the inclined plane circular rotation and the friction force of the object, and the polished rod screw is used as a fastening piece and plays an important role in the assembly of mechanical products.

For example, chinese granted patent No. CN208885746U, "a bolt", includes a screw; the cap part is positioned at the top end of the screw rod and is provided with a first clamping structure; the end head is positioned at the bottom end of the screw rod and is provided with a second clamping structure. The cap part and the end of the bolt are provided with clamping structures, so that the problem that the bolt is difficult to assemble and disassemble due to the fact that the bolt is repeatedly assembled and disassembled and has sliding threads is solved, and the service life of the bolt can be prolonged.

The polished rod portion of the screw in the prior art is mostly formed by turning process machining, the torque strength of the thinned polished rod is insufficient, and the problem of twist-off easily occurs in the using process, so that the working efficiency of equipment assembly is reduced, the existing requirements are not met, and the extrusion-molded thinned polished rod screw is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a thin polished rod screw of extrusion to the polished rod screw who proposes influences equipment work efficiency's problem inadequately because of torsional strength in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an extrusion-molded thin polished rod screw comprises a screw body; further comprising:

the screw cap is arranged at the front end of the screw body and is of a cylindrical structure;

the thin polished rod is arranged in the middle of the screw body, and a screw cap and the thin polished rod are formed in an extrusion mode;

and the threads are arranged at the tail end of the thin polished rod and are formed by rolling through a roller.

Preferably, one end of the screw cap, which is far away from the thin polished rod, is provided with an internal hexagonal flower-shaped groove.

Preferably, the screw cap has a diameter greater than the diameter of the slender rod.

Preferably, the cross-sectional shape of the thin polished rod is circular.

Preferably, the axis of the screw cap coincides with the axis of the slender rod.

Preferably, the hexagon socket flower-shaped groove extends to two thirds of the position inside the screw cap.

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

1. the utility model discloses wholly adopt extrusion, compare in turning technology on the one hand, it is higher to the utilization ratio of steel raw materials to reduce the production of waste material, be favorable to reducing the processing cost, on the other hand extrusion's thin polished rod screw inside metal fiber is not cut off, makes the torsional strength of thin polished rod screw effectively improve, the twist-off phenomenon can not appear when so product installation, and then improves the work efficiency of product equipment.

2. The utility model discloses a screw cap and thin polished rod adopt integral type extrusion, and wherein thin polished rod position passes through mould extrusion, and the material does not change the material volume under the mould extrusion force, increases material plasticity and surface hardness, has guaranteed the joint strength of screw cap and thin polished rod, and the broken end phenomenon can not appear in the installation, reduces the product and uses scrap probability to practice thrift the cost.

Drawings

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

fig. 2 is a perspective view of the present invention.

In the figure: 1. a screw cap; 2. a thin polished rod; 3. a thread; 4. an inner hexagonal flower-shaped groove; 5. the screw body.

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.

Referring to fig. 1-2, the present invention provides an embodiment: an extrusion-molded thin polished rod screw comprises a screw body 5; further comprising:

the screw cap 1 is arranged at the front end of the screw body 5, and the screw cap 1 is of a cylindrical structure;

the thin polished rod 2 is arranged in the middle of the screw body 5, and the screw cap 1 and the thin polished rod 2 are extruded and formed;

and a thread 3 provided at the end of the thin polished rod 2, and the thread 3 is roll-formed by a roller, and the extrusion tap is slowly screwed into the end of the thin polished rod 2 to extrude the material in the axial and radial directions, thereby forming the profile of the thread 3.

Referring to fig. 1-2, an end of the screw cap 1 away from the thin polished rod 2 is provided with an inner hexagonal flower-shaped groove 4 for facilitating the operation of the screw body 5 by a tool.

Referring to fig. 1, the diameter of the screw cap 1 is larger than that of the thin rod 2, so that the torsional strength is effectively improved, and the twist-off phenomenon does not occur during installation.

Referring to fig. 1, the cross section of the thin polished rod 2 is circular, the thin polished rod 2 is extruded by a die, the volume of the material is not changed under the extrusion force of the die, the plasticity and the surface hardness of the material are increased, and the connection strength of the screw cap and the thin polished rod is ensured.

Referring to fig. 1, the axis of the screw cap 1 coincides with the axis of the thin polish rod 2, so that the two are not separated due to the torsion damage of the whole extrusion molding, and the rejection rate of the whole extrusion molding is reduced.

Referring to FIG. 1, the hexagonal socket 4 extends to two thirds of the inner part of the screw cap 1.

The working principle is as follows: under the normal temperature state, put into the mould of press with the metal stock of thin polished rod screw, exert pressure to the mould through the press, utilize the relative motion of upper and lower mould for the metal stock warp in the mould chamber, highly dwindles, and the cross section increases, thereby forms the whole of screw cap 1 and thin polished rod 2, extrudees the formation to the screw thread 3 at the terminal of thin polished rod 2 afterwards, obtains screw body 5.

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 (6)

1. An extrusion-molded thin polished rod screw comprises a screw body (5);

the method is characterized in that: further comprising:

the screw cap (1) is arranged at the front end of the screw body (5), and the screw cap (1) is of a cylindrical structure;

the thin polished rod (2) is arranged in the middle of the screw body (5), and the screw cap (1) and the thin polished rod (2) are formed in an extrusion mode;

and the threads (3) are arranged at the tail end of the thin polished rod (2), and the threads (3) are formed by rolling through a roller.

2. The extruded slim rod screw of claim 1, wherein: one end of the screw cap (1) far away from the thin polish rod (2) is provided with an inner hexagonal flower-shaped groove (4).

3. The extruded slim rod screw of claim 1, wherein: the diameter of the screw cap (1) is larger than that of the thin polish rod (2).

4. The extruded slim rod screw of claim 1, wherein: the cross section of the thin polished rod (2) is circular.

5. The extruded slim rod screw of claim 1, wherein: the axis of the screw cap (1) is coincident with the axis of the slender rod (2).

6. The extruded slender rod screw of claim 2, wherein: the inner hexagonal flower-shaped groove (4) extends to two thirds of the position inside the screw cap (1).

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