CN218599440U

CN218599440U - Cold heading blank of solid part

Info

Publication number: CN218599440U
Application number: CN202223174924.2U
Authority: CN
Inventors: 冀晋辉; 陈攀; 李文奇
Original assignee: Beijing Singukeller Automotive Cold Forming Parts Inc
Current assignee: Beijing Singukeller Automotive Cold Forming Parts Inc
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-03-10
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a cold heading blank of a solid part, which comprises a first cylinder, a second cylinder and a third cylinder; the first cylinder is arranged at the upper part of the second cylinder, and the third cylinder is arranged at the lower part of the second cylinder; the diameter of the first cylinder is smaller than that of the second cylinder, and the diameter of the third cylinder is smaller than that of the first cylinder; the first cylinder, the second cylinder and the third cylinder are concentrically arranged, and the peripheral side wall of the first cylinder is provided with a plurality of convex bodies. Adopt the cold-heading blank carry out simple machine tooling, just can obtain the finished product, improved production efficiency, reduced the consumption of material. Meanwhile, because the complete metal streamline is reserved in the cold heading process and the cold work hardening effect of the metal is added, the part produced by the process has obviously improved integral mechanical property and obviously improved product quality.

Description

Cold heading blank of solid part

Technical Field

The utility model relates to an automobile parts production technical field, concretely relates to cold-heading blank of solid part.

Background

The automobile steering device is formed by connecting an automobile steering wheel, a steering shaft and a steering gear, and has the function of transmitting the pulling force generated by steering of the steering wheel to front wheels so as to control the advancing direction of the wheels. Therefore, the connection between the steering wheel, the steering shaft, and the steering gear requires connecting parts that withstand large pressure and impact force. The existing connecting parts are generally in a tooth shape, and have the defects of cracks, internal looseness, air holes and the like after long-term use. Therefore, the requirements for the external dimensions of the connecting parts and the overall mechanical strength are high.

When the connecting part is used, once the connecting part fails and breaks, the parts can be separated, and if the connecting part runs at a high speed, serious consequences can be caused, so that the quality of the connecting part is very important, and personal safety is concerned.

At present, a manufacturing process adopted before the workpiece is to use a solid steel bar as a raw material, and machine processing processes such as drilling, turning, milling and the like are adopted for production, particularly for tooth-shaped parts, the processing efficiency is very low, although the production requirements of small batches can be met, the production is carried out by adopting the mode, the operation is complex, operators need to be trained for a long time, otherwise, the operators are difficult to master, the production efficiency is low, each workpiece needs at least 30 minutes, the labor intensity of the operators is high, the use cost of equipment is very high, and the production cost is high. For the production of tens of thousands of products, the operators repeatedly perform mechanical labor for a long time, and the eyes, hands, shoulders and other parts are very tired; secondly, the production efficiency is low, and about 200 products can be produced by each person every day. For automobile brands with ten thousand per month, the product needs to supply 1 to 2 thousand pieces per month, the conventional machining method needs a large number of lathes to meet the production quantity, and the production investment is huge.

And the production by adopting the method has the advantages that the utilization rate of metal raw materials is only about 30 percent, a large amount of precious raw materials are changed into scrap waste residues, the production cost is increased, the environment is polluted, and the method does not accord with the energy-saving and low-carbon manufacturing concept proposed by the state at present.

In view of such circumstances, there is an urgent need in the production field for a cold-headed blank of a solid part which can be produced efficiently and quickly.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a solid part's cold-heading blank to solve the above-mentioned problem among the prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

according to the first aspect of the utility model, the cold heading blank of the solid part comprises a first cylinder, a second cylinder and a third cylinder; the first cylinder is arranged at the upper part of the second cylinder, and the third cylinder is arranged at the lower part of the second cylinder; the diameter of the first cylinder is smaller than that of the second cylinder, and the diameter of the third cylinder is smaller than that of the first cylinder; the first cylinder, the second cylinder and the third cylinder are concentrically arranged, and the peripheral side wall of the first cylinder is provided with a plurality of convex bodies.

Further, the height of the first column is greater than that of the second column, and the height of the third column is greater than that of the first column.

Further, a plurality of the convex bodies are arranged on the peripheral side wall of the first cylinder in a circumferential array.

Furthermore, the bottom of the third column body is provided with a limiting hole.

Further, the edge of the end part connected with the third cylinder and the second cylinder is provided with a first chamfer, and the edge of the other end of the third cylinder is provided with a second chamfer.

Further, the first chamfer and the second chamfer have the same angle.

Further, the concentricity of the first cylinder, the second cylinder and the second cylinder is not more than 0.3mm.

Further, the convex body is cylindrical.

Further, the cold heading blank of the solid part is of an integrally formed structure made of alloy steel materials.

The utility model has the advantages of as follows: adopt the cold-heading blank, the machining volume that has significantly reduced has improved production efficiency, has reduced the consumption of material, has improved the size uniformity of product. Meanwhile, because a complete metal streamline is reserved in the cold heading process and the cold work hardening effect of metal is added, the whole mechanical property of the part produced by the process is obviously improved, and the product quality is obviously improved. The part is produced in a cold heading mode, the production efficiency is high, 4-6 thousands of parts can be produced by each device every day, the production process is stable, and the production line can be operated by only one operator. The part can be produced quickly and economically, all sizes and performances of the part are guaranteed to meet the requirements of drawings and customers, production personnel are released from monotonous repeated simple labor, the labor intensity of the personnel is reduced, and the labor efficiency of the personnel is improved. Compared with the original pure machining production mode, the production efficiency is improved by more than 10 times, the energy is saved, the consumption is reduced, and the low-carbon and environment-friendly effects are achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, proportion, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and the modification of any structure, the change of proportion relation or the adjustment of size all fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the purpose which can be achieved by the present invention.

Fig. 1 is a front view of a cold-headed blank for a solid part according to some embodiments of the present invention.

Fig. 2 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A ofbase:Sub>A cold-headed blank ofbase:Sub>A solid part according to some embodiments of the present invention.

Fig. 3 is a perspective view of a cold-heading blank of a solid part according to some embodiments of the present invention.

Fig. 4 is a top view of a cold-headed blank for a solid part according to some embodiments of the present invention.

Fig. 5 is a bottom view of a cold-headed blank for a solid part according to some embodiments of the present invention.

In the figure:

1-first cylinder, 11-convexity; 2-a second column; 3-a third column, 31-a limiting hole, 32-a first chamfer and 33-a second chamfer.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Example 1

As shown in fig. 1 to 5, in the cold heading blank of a solid part in the embodiment of the first aspect of the present invention, the cold heading blank of the solid part is an integrally formed structure made of alloy steel material, and has a total height of 87mm, specifically including three parts, namely, a first cylinder 1, a second cylinder 2 and a third cylinder 3; first cylinder 1 passes through second cylinder 2 is connected with third cylinder 3, and first cylinder 1, second cylinder 2 and third cylinder 3 set gradually from last to down, and second cylinder 2 is located between first cylinder 1 and the third cylinder 3. The specific numerical values are set as follows: the diameter of the first cylinder 1 is 32mm, the height of the first cylinder is 30mm, the diameter of the second cylinder 2 is 40mm, the height of the second cylinder is 5mm, the diameter of the third cylinder 3 is 25mm, and the height of the third cylinder 3 is 52mm; first cylinder 1,

second cylinder

2 and 3 integral type of third cylinder set up with one heart, and the periphery lateral wall of first cylinder 1 sets up a plurality of convex bodies 11. A plurality of lugs 11 are circumferentially arranged in an array on the peripheral side wall of the first column 1, the lugs 11 being generally cylindrical. The bottom of the third column 3 is provided with a limiting hole 31. The concentricity of the first column 1, the second column 2 and the second column 3 is not more than 0.3mm.

Adopt cold-heading blank, then carry out simple machining again, just can obtain as the shown finished product of figure 3, the machining volume that has significantly reduced has improved production efficiency, has reduced the consumption of material, has improved the size uniformity of product. Meanwhile, because the complete metal streamline is reserved in the cold heading process and the cold work hardening effect of the metal is added, the part produced by the process has obviously improved integral mechanical property and obviously improved product quality. And the blank is used, and then simple drilling is carried out, so that the final product can be obtained, the production efficiency is greatly improved, and the cost is obviously reduced.

Example 2

As shown in fig. 1 to 5, a cold heading blank of a solid part comprises the whole contents of embodiment 1, in addition to that, an end edge where one end of the third cylinder 3 and the second cylinder 2 are connected is provided with a first chamfer 32, and the other end edge of the third cylinder 3 is provided with a second chamfer 33. The first chamfer 32 is at the same angle 33 as the second chamfer.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention without departing from the spirit thereof.

In the present invention, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof without substantial changes in the technical content are also regarded as the scope of the present invention.

Claims

1. A cold heading blank of a solid part is characterized by comprising a first cylinder (1), a second cylinder (2) and a third cylinder (3); the first cylinder (1) is arranged at the upper part of the second cylinder (2), and the third cylinder (3) is arranged at the lower part of the second cylinder (2); the diameter of the first cylinder (1) is smaller than that of the second cylinder (2), and the diameter of the third cylinder (3) is smaller than that of the first cylinder (1); the first cylinder (1), the second cylinder (2) and the third cylinder (3) are concentrically arranged, and the peripheral side wall of the first cylinder (1) is provided with a plurality of convex bodies (11).

2. A cold heading blank for a solid part, as claimed in claim 1, wherein the height of said first cylinder (1) is greater than the height of said second cylinder (2), and the height of said third cylinder (3) is greater than the height of said first cylinder (1).

3. A cold heading blank for a solid part as claimed in claim 1, wherein a plurality of said projections (11) are arranged in a circumferential array on a peripheral side wall of said first cylinder (1).

4. Cold heading blank for solid parts according to claim 1, wherein the third cylinder (3) is provided with a limiting hole (31) at the bottom.

5. A cold heading blank for a solid part, as claimed in claim 1, wherein the edge of the end where the third cylinder (3) and the second cylinder (2) are joined is provided with a first chamfer (32) and the edge of the other end of the third cylinder (3) is provided with a second chamfer (33).

6. Cold heading blank of a solid part according to claim 5, wherein the first chamfer (32) is at the same angle as the second chamfer (33).

7. A cold heading blank for a solid part, as claimed in claim 1, wherein said first cylinder (1), said second cylinder (2) and said second cylinder (2) are not more than 0.3mm concentric.

8. A cold heading blank for a solid part as claimed in claim 1 wherein said projections (11) are cylindrical.

9. A cold heading blank for a solid part as claimed in any one of claims 1 to 8, wherein said cold heading blank for a solid part is an integrally formed structure made from an alloy steel material.