CN210424454U - Composite screw - Google Patents
Composite screw Download PDFInfo
- Publication number
- CN210424454U CN210424454U CN201921351332.9U CN201921351332U CN210424454U CN 210424454 U CN210424454 U CN 210424454U CN 201921351332 U CN201921351332 U CN 201921351332U CN 210424454 U CN210424454 U CN 210424454U
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- screw
- core rod
- thread
- rod
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Abstract
A composite screw comprises a core rod and screw teeth, wherein the core rod and the screw teeth are of a split structure, and the inner surfaces of the screw teeth are fixedly arranged on the outer surface of the core rod in an interference fit, transition fit or movable fit mode. The core rod is provided with a thread groove, and the inner side of the thread is embedded in the thread groove. By improving the structure of the screw rod and respectively processing and assembling, the structure is not only beneficial to manufacturing, but also effectively improves the mechanical property of the product. The process structure is simple, the processing and manufacturing are easy, the manufacturing precision is high, the manufacturing cost is low, the processing difficulty is reduced, the processing cost is greatly reduced, the heat treatment process is omitted, the mechanical performance concentricity is improved by more than multiple times, and the economic benefit and the environmental benefit are obvious.
Description
Technical Field
The utility model relates to a screw rod field, concretely relates to compound screw rod.
Background
The screw is one of the most common mechanical structures, mechanical parts, and is generally made by die casting or machining a metal material or a non-metal material. In the prior art, the screw mandrel and the screw thread are made of the same material and are machined or finished by a special machine, the section of the screw thread is single, the shape of the section of the screw thread is limited, and the machining efficiency is low. The screw thread can only be realized by heat treatment under the condition that the screw thread needs higher hardness, the hardness is limited, the process is complex, the screw is deformed and becomes non-concentric by heating and cooling, the use precision cannot be ensured, and the yield is reduced. When complex conditions such as multiple screw pitches, multiple screw thread sections and the like are required on the same core rod, the prior art cannot realize processing at all.
SUMMERY OF THE UTILITY MODEL
In view of the above circumstances, in order to solve the problems existing in the above-mentioned technology, the utility model provides a compound screw rod, simple process, easy, the low cost of manufacturing can accord with operation requirement under the complex condition simultaneously.
A composite screw comprises a core rod and screw teeth, wherein the core rod and the screw teeth are of a split structure, and the inner surfaces of the screw teeth are fixedly arranged on the outer surface of the core rod in an interference fit, transition fit or movable fit mode.
According to the composite screw rod, the core rod is provided with the thread groove, and the inner side of the thread is embedded in the thread groove.
According to the composite screw rod of the application, the screw teeth are left-handed screw teeth or right-handed screw teeth. The screw teeth can be left-handed screw teeth, right-handed screw teeth and longitudinal screw teeth.
According to the composite screw rod, the core rod is a cylinder or a polygonal body, and the transverse section of the core rod is cylindrical, polygonal or square; the longitudinal section of the core rod is rectangular, conical, truncated cone or cylindrical.
According to the composite screw rod, the section of the screw thread is circular, triangular, trapezoidal, square, rectangular or polygonal.
According to the composite screw rod, the core rod is a round rod, and the transverse section of the core rod is cylindrical; the longitudinal section of the core rod is rectangular; the section of the screw thread is trapezoidal or rectangular.
According to the composite screw rod, the core rod is a hexagonal rod, and the transverse section of the core rod is hexagonal; the longitudinal section of the core rod is rectangular; the section of the screw thread is trapezoidal or rectangular.
According to the composite screw rod, the core rod is a triangular rod, and the transverse section of the core rod is triangular; the longitudinal section of the core rod is rectangular; the section of the screw thread is trapezoidal or rectangular.
According to the composite screw rod, the core rod is a conical rod, and a screw thread groove is formed in the core rod; the screw teeth are parallel threads; the inner side of the screw thread is embedded in the screw thread groove.
According to the composite screw rod, the core rod is a conical rod, and a screw thread groove is formed in the core rod; the thread is a conical thread; the inner side of the screw thread is embedded in the screw thread groove.
After the technology provided by the utility model, according to the utility model discloses compound screw rod has following beneficial effect.
1) By improving the structure of the screw rod and respectively processing and assembling, the structure is not only beneficial to manufacturing, but also effectively improves the mechanical property of the product. The process structure is simple, the processing and manufacturing are easy, the manufacturing precision is high, the manufacturing cost is low, the processing difficulty is reduced, the processing cost is greatly reduced, the heat treatment process is omitted, the mechanical performance concentricity is improved by more than multiple times, and the economic benefit and the environmental benefit are obvious.
2) The processing of screw teeth with different sections can be realized, the technical problems of difficult processing of the traditional large screw teeth and deformation caused by heat treatment after processing are solved, the use requirements under complex conditions can be met, the manufacturing cost is reduced, the quality is improved, and the production speed is improved.
Drawings
FIG. 1 is a schematic view of a composite screw of example 1;
FIG. 2 is a perspective view of the compound screw of example 1;
FIG. 3 is a structural view of a compound screw of example 2;
FIG. 4 is a perspective view of a compound screw according to example 2;
FIG. 5 is a structural view of a compound screw of example 3;
FIG. 6 is a perspective view of a compound screw according to example 3;
FIG. 7 is a structural view of a compound screw of example 4;
FIG. 8 is a perspective view of a compound screw according to example 4;
FIG. 9 is a view showing the structure of a mandrel bar according to examples 4 and 5;
FIG. 10 is a view showing a structure of a screw thread according to example 4;
FIG. 11 is a structural view of a compound screw of example 5;
FIG. 12 is a perspective view of a compound screw according to example 5;
fig. 13 is a thread structure of example 5.
Detailed Description
Various preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The following description with reference to the accompanying drawings is provided to assist in understanding the exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to assist understanding, but they are to be construed as merely illustrative. Accordingly, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Also, in order to make the description clearer and simpler, a detailed description of functions and configurations well known in the art will be omitted.
Example 1
The compound screw shown in fig. 1 and 2 is processed, and concentricity and thread hardness are required. The composite screw comprises a core rod 1 and screw threads 2, wherein the core rod 1 and the screw threads 2 are of a split structure, and the inner surfaces of the screw threads 2 are fixedly arranged on the outer surface of the core rod 1 in an interference fit, transition fit or movable fit mode.
The core rod 1 is machined by a conventional machine to ensure higher concentricity, the screw teeth 2 are made of a section material meeting the technical requirements, such as high-carbon alloy steel for hot forming and high-carbon alloy steel for flat teeth, and then the section material is formed by a screw machine at one time, and the composite mounting is shown in figures 1 and 2.
The screw teeth 2 are left-handed screw teeth or right-handed screw teeth.
The core rod 1 is a cylinder, and the transverse section of the core rod 1 is cylindrical; the longitudinal section of the core rod 1 is rectangular. The section of the screw tooth 2 is trapezoidal or rectangular.
Example 2
The compound screw shown in fig. 3 and 4 is processed, and the hardness of the screw thread is required. The composite screw comprises a core rod 1 and screw threads 2, wherein the core rod 1 and the screw threads 2 are of a split structure, and the inner surfaces of the screw threads 2 are fixedly arranged on the outer surface of the core rod 1 in an interference fit, transition fit or movable fit mode.
The core rod 1 is machined by a conventional machine to ensure higher dimensional accuracy, the screw teeth 2 are made of a section material meeting the technical requirements, such as high-carbon alloy steel for hot forming and high-carbon alloy steel for flat teeth, and then the section material is formed by a screw machine at one time, and the combined installation is shown in figures 3 and 4.
The screw teeth 2 are left-handed screw teeth or right-handed screw teeth.
The core rod 1 is a hexagonal rod, and the transverse section of the core rod 1 is hexagonal; the longitudinal section of the core rod 1 is rectangular. The section of the screw tooth 2 is trapezoidal or rectangular.
Example 3
The compound screw shown in fig. 5 and 6 is processed, and the hardness of the screw thread is required. The composite screw comprises a core rod 1 and screw threads 2, wherein the core rod 1 and the screw threads 2 are of a split structure, and the inner surfaces of the screw threads 2 are fixedly arranged on the outer surface of the core rod 1 in an interference fit, transition fit or movable fit mode.
The core rod 1 is machined by a conventional machine to ensure higher shape and dimensional accuracy, the screw teeth 2 are made of a section material meeting the technical requirements, such as high-carbon alloy steel for hot forming and high-carbon alloy steel for flat teeth, and then the section material is formed by a screw machine at one time, and the combined installation is shown in figures 5 and 6.
The screw teeth 2 are left-handed screw teeth or right-handed screw teeth.
The core rod 1 is a triangular rod, and the transverse section of the core rod 1 is triangular; the longitudinal section of the core rod 1 is rectangular. The section of the screw tooth 2 is trapezoidal or rectangular.
Example 4
The compound screw shown in fig. 7 and 8 is processed, and concentricity and hardness of threads are required. The composite screw comprises a core rod 1 and screw threads 2, wherein the core rod 1 and the screw threads 2 are of a split structure, and the inner surfaces of the screw threads 2 are fixedly arranged on the outer surface of the core rod 1 in an interference fit, transition fit or movable fit mode.
The core rod 1 is machined by a conventional machine to ensure higher shape and dimensional accuracy, the screw teeth 2 are made of a section material meeting the technical requirements, such as high-carbon alloy steel for hot forming and high-carbon alloy steel for flat teeth, and then the section material is formed by a screw machine at one time, and the combined installation is shown in figures 7 and 8.
The screw teeth 2 are left-handed screw teeth or right-handed screw teeth.
The core rod 1 is a tapered rod, and as shown in fig. 9, a thread groove 10 is formed in the core rod 1. The thread 2 is shown in fig. 10, and the thread 2 is a parallel thread. The inner side of the thread 2 is embedded in the thread groove 10.
Example 5
The compound screw shown in fig. 11 and 12 is processed, and concentricity and hardness of the screw thread are required. The composite screw comprises a core rod 1 and screw threads 2, wherein the core rod 1 and the screw threads 2 are of a split structure, and the inner surfaces of the screw threads 2 are fixedly arranged on the outer surface of the core rod 1 in an interference fit, transition fit or movable fit mode.
The core rod 1 is machined by a conventional machine to ensure higher shape and dimensional accuracy, the screw teeth 2 are made of a section material meeting the technical requirements, such as high-carbon alloy steel for hot forming and high-carbon alloy steel for flat teeth, and then the section material is formed by a screw machine at one time, and the composite mounting is shown in figures 11 and 12.
The screw teeth 2 are left-handed screw teeth or right-handed screw teeth.
The core rod 1 is a tapered rod, and as shown in fig. 9, a thread groove 10 is formed in the core rod 1. The thread 2 is shown in fig. 13, and the thread 2 is a tapered thread. The inner side of the thread 2 is embedded in the thread groove 10.
According to the application, the composite screw comprises a core rod 1 and threads 2, wherein the core rod 1 and the threads 2 are of split structures, and the inner surfaces of the threads 2 are fixedly arranged on the outer surface of the core rod 1 in an interference fit, transition fit or movable fit mode. According to the compound screw of the present application, the core rod 1 may be provided with a thread groove 10, and the inner side of the thread 2 is fitted in the thread groove 10. The screw teeth can be left-handed screw teeth, right-handed screw teeth and longitudinal screw teeth. The core rod 1 can be a cylinder or a polygonal body, and the transverse section of the core rod 1 can be a cylinder, a polygon or a square; the longitudinal section of the core rod 1 may be rectangular, conical, truncated cone or cylindrical. The section of the screw thread 2 can be circular, triangular, trapezoidal, square, rectangular or polygonal.
According to the composite screw rod, the screw core rod is processed independently, the screw teeth are processed independently, so that the composite screw rod is convenient to manufacture and ensures higher processing quality, the composite screw rod is assembled after being processed respectively, and the screw teeth are arranged on the screw core rod to form the composite screw rod. The screw teeth can be made into any screw pitch, and the screw core rod can be simultaneously provided with screw teeth with different sections, different screw pitches and different materials so as to meet the use requirements of different technical conditions; the screw teeth on the screw mandrel can be in embedded fit, and can be in static fit, transition fit or dynamic fit to meet the use requirement.
The screw rod and the core rod are integrated and processed at one time, and the coaxial precision is ensured, so that the concentricity and the matching precision with other parts are ensured. The thread is made of materials meeting use conditions, has a section and a thread pitch, is machined by a thread machine in an inorganic cutting mode, and is energy-saving, environment-friendly and more than 10 times higher in machining efficiency than turning. The screw thread to be separately processed may have a constant pitch or a variable pitch. The screw teeth can be made into any screw pitch. The screw core rod and the screw threads can be made of materials with the same performance or materials with different performances.
The screw core rod can be simultaneously provided with screw teeth with different screw pitches and different sections and different materials according to the use requirements. The screw core rod can be simultaneously provided with screw teeth with different sections, different screw pitches and different materials so as to meet the use requirements of different technical conditions.
According to the composite screw rod of the application, the surface of the screw core rod can be smooth so as to combine threads in various shapes, the surface of the screw core rod can also be provided with thread grooves so as to restore the threads, the surface of the thread groove 10 becomes the outer surface of the core rod 1, and the inner surface of the thread 2 and the bottom of the thread groove 10 can be fixed and further fixed in an interference fit, transition fit or movable fit mode.
According to the composite screw rod, the structure of the screw rod is improved, and the screw rod is assembled after being processed respectively, so that the composite screw rod is not only beneficial to manufacturing, but also effectively improves the mechanical property of products. The process structure is simple, the processing and manufacturing are easy, the manufacturing precision is high, the manufacturing cost is low, the processing difficulty is reduced, the processing cost is greatly reduced, the heat treatment process is omitted, the mechanical performance concentricity is improved by more than multiple times, and the economic benefit and the environmental benefit are obvious.
According to the composite screw rod, the processing of the screw threads with different sections can be realized, the technical problems of difficulty in processing the traditional large screw threads and deformation caused by heat treatment after processing can be solved, the use requirements under complex conditions can be met, the manufacturing cost is reduced, the quality is improved, and the production speed is improved.
The present invention has been described in detail, and the principle and the implementation of the present invention have been explained by using specific examples, and the explanation of the above examples is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Through the above description of the embodiments, those skilled in the art can clearly understand that the present invention can be implemented. Of course, the above listed cases are only examples, and the present invention is not limited thereto. It should be understood by those skilled in the art that other variations or simplifications according to the technical solution of the present invention may be appropriately applied to the present invention, and should be included in the scope of the present invention.
Claims (10)
1. The composite screw is characterized by comprising a core rod (1) and screw teeth (2), wherein the core rod (1) and the screw teeth (2) are of a split structure, and the inner surfaces of the screw teeth (2) are fixedly arranged on the outer surface of the core rod (1) in an interference fit, transition fit or movable fit mode.
2. A compound screw according to claim 1, characterised in that the core rod (1) is provided with a thread groove (10), the inner side of the thread (2) fitting in the thread groove (10).
3. A compound screw according to claim 1 or 2, characterised in that said thread (2) is a left-handed thread or a right-handed thread.
4. A compound screw according to claim 1 or 2, characterised in that the mandrel (1) is cylindrical or polygonal, the mandrel (1) having a transverse cross-section in the shape of a cylinder, polygon or square; the longitudinal section of the core rod (1) is rectangular, conical, truncated cone or cylindrical.
5. A compound screw according to claim 1 or 2, characterised in that the thread (2) has a circular, triangular, trapezoidal, square, rectangular or polygonal cross-section.
6. A compound screw according to claim 1, characterised in that the mandrel (1) is a round rod, the mandrel (1) having a cylindrical transverse cross-section; the longitudinal section of the core rod (1) is rectangular; the section of the screw tooth (2) is trapezoidal or rectangular.
7. A compound screw according to claim 1, characterised in that the mandrel (1) is a hexagonal rod, the transverse cross-section of the mandrel (1) being hexagonal; the longitudinal section of the core rod (1) is rectangular; the section of the screw tooth (2) is trapezoidal or rectangular.
8. A compound screw according to claim 1, characterised in that the mandrel (1) is a triangular bar, the transverse cross-section of the mandrel (1) being triangular; the longitudinal section of the core rod (1) is rectangular; the section of the screw tooth (2) is trapezoidal or rectangular.
9. A compound screw according to claim 1, characterised in that the core rod (1) is a conical rod, the core rod (1) being provided with thread grooves (10); the screw teeth (2) are parallel threads; the inner side of the screw thread (2) is embedded in the screw thread groove (10).
10. A compound screw according to claim 1, characterised in that the core rod (1) is a conical rod, the core rod (1) being provided with thread grooves (10); the screw teeth (2) are conical threads; the inner side of the screw thread (2) is embedded in the screw thread groove (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351332.9U CN210424454U (en) | 2019-08-20 | 2019-08-20 | Composite screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351332.9U CN210424454U (en) | 2019-08-20 | 2019-08-20 | Composite screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210424454U true CN210424454U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921351332.9U Expired - Fee Related CN210424454U (en) | 2019-08-20 | 2019-08-20 | Composite screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210424454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413388A (en) * | 2019-08-20 | 2021-02-26 | 刘大银 | Composite screw |
-
2019
- 2019-08-20 CN CN201921351332.9U patent/CN210424454U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413388A (en) * | 2019-08-20 | 2021-02-26 | 刘大银 | Composite screw |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200428 Termination date: 20210820 |
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| CF01 | Termination of patent right due to non-payment of annual fee |