CN215035500U - Screw thread tensioning mechanism - Google Patents
Screw thread tensioning mechanism Download PDFInfo
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- CN215035500U CN215035500U CN202120514171.1U CN202120514171U CN215035500U CN 215035500 U CN215035500 U CN 215035500U CN 202120514171 U CN202120514171 U CN 202120514171U CN 215035500 U CN215035500 U CN 215035500U
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- supporting seat
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- bottom plate
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- tension bolt
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Abstract
A thread take-up mechanism comprising: the device comprises a bottom plate, a tensioning bolt, a limiting pin and a supporting seat; the supporting seat is installed on the bottom plate, the tension bolt penetrates through holes in the bottom plate and the supporting seat, the workpiece is placed on the supporting seat, and the thread at the top of the tension bolt is screwed into the threaded hole of the workpiece. The tension bolt is provided with a limit pin in a cavity between the bottom plate and the supporting seat. The head of the tensioning bolt is cylindrical, the top of the cylinder is an outer hexagon, and the surface of the outer circle of the lower part of the cylinder is provided with a knurled reticulate pattern. The utility model discloses compact structure, it is easy and simple to handle, when pressing from both sides tight, the process of relaxing to the work piece, only need just can realize through pressing from both sides tight, the process of relaxing to the work piece screw in or screwing out straining bolt, only need through left and right rotatory straining bolt just can realize pressing from both sides tight and relaxing of work piece, compact structure, operation are nimble, have improved work piece machining efficiency effectively, have alleviateed operator's intensity of labour.
Description
Technical Field
The utility model belongs to the machining field relates to a straining device, especially relates to a screw thread straining device.
Background
As is known, when a workpiece is machined on a machine tool, the workpiece is usually pressed by pressing plates or bolts. Due to the limitation of the shape of the product and the structure of the tool clamp, the pressing device and the positioning device are often required to be respectively arranged on the periphery of the workpiece. However, due to the existence of the pressing plate, the machined surface cannot be completely exposed, which requires that the cutter needs to avoid the pressing plate in the machining process, causes the machining of the pressing position of the pressing plate to be not in place, needs to be processed by a plurality of procedures, has low working efficiency and cannot meet the production requirement. At the moment, the position needing to be processed is exposed when the workpiece is pressed, and the omnibearing barrier-free processing is realized by a reverse thread tensioning mode.
The utility model discloses a "taut structure" of the grant of national intellectual property office 2013.05.15, application date: 2012.11.21, patent application No.: 201220620601.9, publication number: CN 202937589U.
Disclosed is a tension structure including: the tensioning bolt comprises a tensioning bolt body and a nut, wherein one end of the tensioning bolt body is provided with a limiting structure, the other end of the tensioning bolt body is provided with threads, the nut is installed on the threads of the bolt, a part needing tensioning is installed between the limiting structure of the nut and the tensioning bolt body, an external spline is arranged on the tensioning bolt body, and an internal spline matched with the tensioning bolt body is arranged in an inner hole of the part needing tensioning. The tightening bolt cannot rotate due to circumferential limiting of the spline, so that the nut can be effectively installed and the tightening function can be realized. The utility model discloses a structure only is applicable to the occasion that has the through-hole on the work piece locating surface, and is not applicable to the occasion that only has the screw thread blind hole on the work piece locating surface.
Therefore, the screw thread tensioning mechanism which can meet the clamping requirement of only the screw thread blind hole on the workpiece positioning surface, can realize all-dimensional barrier-free processing, and has the advantages of compact structure, convenient operation, high working efficiency, safety and reliability is needed to be provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compact structure, convenient operation, work efficiency height, safe and reliable's screw thread tensioning mechanism.
In order to realize the above purpose, the utility model adopts the technical scheme that: a thread take-up mechanism comprising: the device comprises a bottom plate, a tensioning bolt, a limiting pin and a supporting seat; the supporting seat is installed on the bottom plate, the tension bolt penetrates through holes in the bottom plate and the supporting seat, the workpiece is placed on the supporting seat, and the thread at the top of the tension bolt is screwed into the threaded hole of the workpiece.
The head of the tensioning bolt is cylindrical, the top of the cylinder is hexagonal, and the surface of the outer circle of the lower part of the cylinder is provided with knurled reticulate patterns.
The middle part of the supporting seat is provided with a through hole which is step-shaped, the upper part of the through hole is a tension bolt thread through hole, the lower part of the through hole is a unthreaded hole, the tension bolt is provided with a limit pin in a unthreaded hole cavity between the bottom plate and the supporting seat, and the diameter of the unthreaded hole is larger than the length of the limit pin.
The utility model adopts the above technical scheme after have following superiority: the utility model discloses compact structure, it is easy and simple to handle, when pressing from both sides tightly, loosening the process to the work piece, only need just can realize through to work piece screw in or screw out tie bolt, improved work piece machining efficiency effectively, alleviateed operator's intensity of labour.
Drawings
Fig. 1 is a schematic structural diagram of a thread tensioning mechanism of the present invention.
In the figure: the device comprises a base plate 1, a tension bolt 2, a limiting pin 3, a supporting seat 4 and a workpiece 5.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples. As shown in fig. 1, a thread take-up mechanism includes: the device comprises a bottom plate 1, a tension bolt 2, a limit pin 3, a supporting seat 4 and a workpiece 5; the supporting seat 4 is installed on the bottom plate 1, the workpiece 5 is placed on the supporting seat 4, the tension bolt 2 penetrates through holes in the bottom plate 1 and the supporting seat 4, the through holes are step-shaped, the upper portion of the through holes is threaded through holes of the tension bolt 2, the lower portion of the through holes is unthreaded holes, and the diameter of the unthreaded holes is larger than the length of the limiting pin 3.
The tension bolt 2 is provided with a limiting pin 3 which limits the moving range of the tension bolt in a cavity between the bottom plate 1 and the supporting seat 4, and the tension bolt 2 is screwed into a threaded hole of a positioning surface of a workpiece 5 to tension the workpiece 5.
The utility model discloses a theory of operation does: the supporting seat 4 is installed on the bottom plate 1, the workpiece 5 is placed on the supporting seat 4, the tension bolt 2 penetrates through holes arranged on the bottom plate 1 and the supporting seat 4, the limiting pin 3 is installed on the tension bolt 2 and limits the tension bolt 2 to move only in a cavity range between the bottom plate 1 and the supporting seat 4, the thread of the head of the tension bolt 2 is screwed into the threaded hole of the positioning surface of the workpiece 5 until the step end surface of the tension bolt 2 is contacted with the step surface of the bottom plate 1, the tension bolt 2 cannot continue to rotate, and the workpiece 5 is tensioned. On the contrary, the thread at the head of the tension bolt 2 is screwed out of the threaded hole of the positioning surface of the workpiece 5, and the tension bolt 2 is separated from the workpiece 5 on the bottom plate 1 through the limiting pin 3, so that the workpiece can be taken out. The tension bolt (2) is provided with a reticulate pattern and an outer hexagon, and the reticulate pattern is used for increasing friction force when the tension bolt (2) is rotated by hands; the hexagonal socket is used for increasing the tightening force when the screw (2) is tightened by a wrench.
When the clamping and releasing processes of the workpiece 5 are realized, the clamping and releasing of the workpiece 5 can be realized only by rotating the tension bolt 2 leftwards and rightwards, the structure is compact, the operation is flexible and convenient, the workpiece processing efficiency is improved, and the labor intensity of an operator is reduced.
Finally, it should be noted that: while the present invention has been described with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. All changes, modifications, equivalents and the like which come within the spirit of the invention are intended to be embraced therein.
Claims (3)
1. A thread take-up mechanism comprising: the device comprises a bottom plate (1), a tension bolt (2), a limiting pin (3), a supporting seat (4) and a workpiece (5); the method is characterized in that: the supporting seat (4) is installed on the base plate (1), the tension bolt (2) penetrates through holes in the base plate (1) and the supporting seat (4), the workpiece (5) is placed on the supporting seat (4), and threads on the top of the tension bolt (2) are screwed into threaded holes of the workpiece (5).
2. A thread take-up mechanism as defined in claim 1, wherein: the head of the tension bolt (2) is cylindrical, the top of the cylinder is hexagonal, and the surface of the outer circle of the lower part of the cylinder is provided with knurled reticulate patterns.
3. A thread take-up mechanism as defined in claim 1, wherein: the middle of the supporting seat (4) is provided with a through hole which is step-shaped, the upper part of the through hole is a threaded hole of the tension bolt (2), the lower part of the through hole is a unthreaded hole, the tension bolt (2) is provided with a limit pin (3) in a unthreaded hole cavity between the bottom plate (1) and the supporting seat (4), and the diameter of the unthreaded hole is larger than the length of the limit pin (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120514171.1U CN215035500U (en) | 2021-03-11 | 2021-03-11 | Screw thread tensioning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120514171.1U CN215035500U (en) | 2021-03-11 | 2021-03-11 | Screw thread tensioning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215035500U true CN215035500U (en) | 2021-12-07 |
Family
ID=79260460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120514171.1U Active CN215035500U (en) | 2021-03-11 | 2021-03-11 | Screw thread tensioning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215035500U (en) |
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2021
- 2021-03-11 CN CN202120514171.1U patent/CN215035500U/en active Active
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