CN215805648U - Fastening durable type plum blossom thin round column head machine screw - Google Patents
Fastening durable type plum blossom thin round column head machine screw Download PDFInfo
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- CN215805648U CN215805648U CN202121527926.8U CN202121527926U CN215805648U CN 215805648 U CN215805648 U CN 215805648U CN 202121527926 U CN202121527926 U CN 202121527926U CN 215805648 U CN215805648 U CN 215805648U
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Abstract
The utility model relates to the technical field of screws, in particular to a fastening durable type thin plum blossom round column cap machine screw which comprises a screw cap and a screw rod integrally formed with the screw cap, wherein a thread is fixed on the screw rod; the center of the screw is a pure steel layer, and the outermost layer of the screw is a first chromium-plated layer; the center of the thread is an inner steel layer, and the outermost layer is a second chromium-plated layer; the nut is provided with a plum blossom groove; the thread diameter decreases from the end of the screw at the nut to the outside of the thread diameter assembly; according to the utility model, the outer sides of the screw rod and the threads are plated with chromium with the thickness of 2-3 microns, so that the wear resistance of the screw rod and the threads can be improved, the durability of the screw rod and the threads can be further improved, the thread diameter of the threads is gradually increased from the outer end of the screw rod to one end of the nut, the screw rod can be screwed in more tightly in the using process of the screw rod, and the screw rod and the threads are arranged into a plurality of layers, so that the comprehensive performances of the screw rod and the threads, such as compression resistance, bending resistance, wear resistance and the like, can be improved.
Description
Technical Field
The utility model relates to the technical field of screws, in particular to a fastening durable type thin plum blossom round column head machine screw.
Background
The screw is a screw, which 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 fastening degree and the durability of the prior art plum screw are poor in the using process, so that the use process is dangerous. In view of this, we propose a fastening durable type thin circular quincunx stud bolt.
SUMMERY OF THE UTILITY MODEL
In order to make up for the defects, the utility model provides a fastening durable type thin plum blossom round column head machine screw.
The technical scheme of the utility model is as follows:
a fastening durable type thin plum blossom round column head machine screw comprises a screw cap and a screw rod which is integrally formed with the screw cap, wherein threads are fixed on the screw rod; the center of the screw is a pure steel layer, and the outermost layer of the screw is a first chromium-plated layer; the center of the thread is an inner steel layer, and the outermost layer is a second chromium-plated layer; the nut is provided with a plum blossom groove; the thread diameter decreases from the end of the screw located at the nut outward from the thread diameter assembly.
According to the preferable technical scheme, the outer side of the pure steel layer is attached to a reinforcing layer, the outer side of the reinforcing layer is attached to an explosion-proof layer, the outer side of the explosion-proof layer is attached to a heat-resistant layer, the outer side of the heat-resistant layer is attached to an anti-rust layer, and the first chromium-plated layer is attached to the outer side of the anti-rust layer.
As an optimized technical scheme, the anti-cracking layer is attached to the outer side of the inner steel layer, the reinforcing layer is attached to the outer side of the anti-cracking layer, the wear-resistant layer is attached to the outer side of the reinforcing layer, and the second chromium-plated layer is attached to the outer side of the wear-resistant layer.
Preferably, the pure steel layer and the inner steel layer are both hard alloy steel.
Preferably, the reinforcing layer and the reinforcing layer are made of titanium alloy.
As a preferable technical scheme, the explosion-proof layer and the anti-cracking layer are both made of iron-chromium alloy, namely stainless steel.
According to a preferable technical scheme, the chromium plating thickness of the first chromium plating layer and the second chromium plating layer is 2-3 micrometers.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the chromium with the thickness of 2-3 microns is plated on the outer sides of the screw rod and the threads, so that the wear resistance of the screw rod and the threads can be improved, the durability of the screw rod and the threads can be further improved, and the diameter of the threads is gradually increased from the outer end of the screw rod to one end of the nut, so that the screw can be screwed more tightly in the use process of the screw.
2. The screw and the threads are arranged into a plurality of layers, so that the comprehensive performance of the screw and the threads, such as compression resistance, bending resistance, wear resistance and the like, can be improved.
Drawings
FIG. 1 is a first schematic view (left view) of the overall structure of the present invention;
FIG. 2 is a first (right view) of the overall structure of the present invention;
FIG. 3 is a schematic cross-sectional view of a screw according to the present invention;
fig. 4 is a structural schematic diagram of a cross section of the thread in the present invention.
In the figure:
a nut 1; a plum blossom groove 10; a screw 2; a layer of pure steel 20; a reinforcing layer 21; an explosion-proof layer 22; a heat-resistant layer 23; a rust-preventive layer 24; a first chromium plating layer 25; a thread 3; an inner steel layer 30; an anti-cracking layer 31; a reinforcement layer 32; a wear-resistant layer 33; a second chromium plating layer 34.
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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
a fastening durable type thin plum blossom column cap machine screw comprises a screw cap 1 and a screw rod 2 which is integrally formed with the screw cap 1, wherein a thread 3 is fixed on the screw rod 2; the center of the screw rod 2 is a pure steel layer 20, and the outermost layer is a first chromium coating 25; the center of the thread 3 is an inner steel layer 30, and the outermost layer is a second chromium-plated layer 34; the nut 1 is provided with a plum blossom groove 10; the thread 3 is reduced from the end of the screw 2 at the screw cap 1 to the outer thread 3 diameter component.
It is necessary to supplement that a plurality of layers are arranged between the pure steel layer 20 and the first chromium plating layer 25 for increasing the tensile strength and the bending strength of the screw 2, and a plurality of layers are also arranged between the inner steel layer 30 and the second chromium plating layer 34 for increasing the wear resistance of the thread 3 and the durability thereof; the gradually increased diameter of the thread 3 also makes the thread have stronger fastening performance in the use process; providing the first chromium plating 25 and the second chromium plating 34 may increase the wear resistance of the screw 2 and the thread 3, respectively.
In this embodiment, it is preferable that the reinforcing layer 21 is bonded to the outer side of the pure steel layer 20, the explosion-proof layer 22 is bonded to the outer side of the reinforcing layer 21, the heat-resistant layer 23 is bonded to the outer side of the explosion-proof layer 22, the rust-proof layer 24 is bonded to the outer side of the heat-resistant layer 23, and the first chromium plating layer 25 is bonded to the outer side of the rust-proof layer 24.
It is added that the reinforcing layer 21 is arranged to increase the tensile strength of the screw 2, the explosion-proof layer 22 is arranged to increase the bending strength of the screw 2, the heat-resistant layer 23 is arranged to increase the heat-resistant performance of the screw 2, and the rust-proof layer 24 is arranged to increase the corrosion-resistant performance of the screw 2 and increase the service life thereof.
In this embodiment, it is preferable that the crack prevention layer 31 is bonded to the outer side of the inner steel layer 30, the reinforcement layer 32 is bonded to the outer side of the crack prevention layer 31, the wear-resistant layer 33 is bonded to the outer side of the reinforcement layer 32, and the second chromium plating layer 34 is bonded to the outer side of the wear-resistant layer 33.
It should be added that the anti-cracking layer 31 increases the bending resistance of the thread 3, the reinforcing layer 32 increases the compressive strength of the thread 3, and the wear-resistant layer 33 increases the wear resistance of the thread 3.
Preferably, in this embodiment, both the pure steel layer 20 and the inner steel layer 30 are hard alloy steels.
It is necessary to supplement that the hard alloy steel has a greater hardness, avoiding breakage thereof during use.
In the present embodiment, the reinforcing layer 21 and the reinforcing layer 32 are preferably made of a titanium alloy.
It is necessary to supplement that the titanium alloy has a high tensile strength to avoid the screw from breaking under a high tensile force.
Preferably, in the present embodiment, the explosion-proof layer 22 and the crack prevention layer 31 are both made of an iron-chromium alloy, i.e., stainless steel.
It is necessary to supplement that stainless steel has a high rigidity, i.e. bending strength, to avoid the screws from breaking when subjected to high shear forces, i.e. high stresses, during use.
In the embodiment, the chromium plating thickness of the first chromium plating layer 25 and the second chromium plating layer 34 is preferably 2 to 3 micrometers.
The method needs to be supplemented that the chromium plating has better wear resistance when the thickness is between 2 and 3 microns.
When the fastening durable type thin round-column head machine screw is used, a plurality of layers are arranged between the pure steel layer 20 and the first chromium coating 25 and are used for increasing the tensile strength and the bending strength of the screw rod 2, the reinforcing layer 21 can increase the tensile strength of the screw rod 2, the explosion-proof layer 22 can increase the bending strength of the screw rod 2, the heat-resistant layer 23 is arranged for increasing the heat resistance of the screw rod 2, and the anti-rust layer 24 is arranged for increasing the corrosion resistance of the screw rod 2 and prolonging the service life of the screw rod 2; a plurality of layers are also arranged between the inner steel layer 30 and the second chromium coating 34, so that the wear resistance of the threads 3 can be improved, the durability of the threads can be improved, the anti-cracking layer 31 can improve the bending resistance of the threads 3, the reinforcing layer 32 can improve the compression strength of the threads 3, and the wear resistance of the threads 3 can be improved by the wear-resistant layer 33.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a fasten durable type plum blossom thin round column cap machine screw which characterized in that: the nut screw comprises a nut (1) and a screw rod (2) which is integrally formed with the nut (1), wherein a thread (3) is fixed on the screw rod (2); the center of the screw rod (2) is a pure steel layer (20), and the outermost layer is a first chromium coating (25); the center of the thread (3) is an inner steel layer (30), and the outermost layer is a second chromium coating (34); the nut (1) is provided with a plum blossom groove (10); the thread (3) is formed by that the screw rod (2) is positioned at one end of the screw cap (1) and the diameter component of the thread (3) is reduced outwards.
2. The fastening durable type thin circular quincunx column cap machine screw as claimed in claim 1, wherein: the anti-corrosion coating is characterized in that a reinforcing layer (21) is attached to the outer side of the pure steel layer (20), an anti-explosion layer (22) is attached to the outer side of the reinforcing layer (21), a heat-resistant layer (23) is attached to the outer side of the anti-explosion layer (22), an anti-corrosion layer (24) is attached to the outer side of the heat-resistant layer (23), and the first chromium-plated layer (25) is attached to the outer side of the anti-corrosion layer (24).
3. The fastening durable type thin circular quincunx column cap machine screw as claimed in claim 2, wherein: with interior steel layer (30) outside laminating be anti-cracking layer (31), with what anti-cracking layer (31) outside laminating is anchor coat (32), with what anchor coat (32) outside laminating is wearing layer (33), second chromium-plated layer (34) then laminates wearing layer (33) outside.
4. The fastening durable type thin circular quincunx column cap machine screw as claimed in claim 3, wherein: the pure steel layer (20) and the inner steel layer (30) are both hard alloy steel.
5. The fastening durable thin circular quincunx stud bolt of claim 4, wherein: the reinforcing layer (21) and the reinforcing layer (32) are made of titanium alloy.
6. The fastening durable type thin circular quincunx column cap machine screw as claimed in claim 5, wherein: the explosion-proof layer (22) and the anti-cracking layer (31) are both made of iron-chromium alloy, namely stainless steel.
7. The fastening durable type thin circular quincunx column cap machine screw as claimed in claim 1, wherein: the first chromium plating layer (25) and the second chromium plating layer (34) are 2-3 microns in chromium plating thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121527926.8U CN215805648U (en) | 2021-07-06 | 2021-07-06 | Fastening durable type plum blossom thin round column head machine screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121527926.8U CN215805648U (en) | 2021-07-06 | 2021-07-06 | Fastening durable type plum blossom thin round column head machine screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215805648U true CN215805648U (en) | 2022-02-11 |
Family
ID=80179224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121527926.8U Active CN215805648U (en) | 2021-07-06 | 2021-07-06 | Fastening durable type plum blossom thin round column head machine screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215805648U (en) |
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2021
- 2021-07-06 CN CN202121527926.8U patent/CN215805648U/en active Active
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| GR01 | Patent grant | ||
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Address after: 511500 No. 2, guangchuang street, Guangzhou (Qingyuan) industrial transfer industrial park, Shijiao Town, Qingcheng District, Qingyuan City, Guangdong Province Patentee after: Guangdong fasite Precision Hardware Co.,Ltd. Address before: 511500 No. 2, guangchuang street, Guangzhou (Qingyuan) industrial transfer industrial park, Shijiao Town, Qingcheng District, Qingyuan City, Guangdong Province Patentee before: Qingyuan fast precision hardware Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |