CN215370674U - Connecting mandrel - Google Patents
Connecting mandrel Download PDFInfo
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- CN215370674U CN215370674U CN202121153330.6U CN202121153330U CN215370674U CN 215370674 U CN215370674 U CN 215370674U CN 202121153330 U CN202121153330 U CN 202121153330U CN 215370674 U CN215370674 U CN 215370674U
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- mandrel
- mandrel body
- shaft
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- groove
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Abstract
The utility model relates to the technical field of connecting pieces, in particular to a connecting mandrel which comprises a mandrel body, wherein the front end of the mandrel body is provided with an anti-rotation part, the rear end of the mandrel body is provided with a connecting part, and the connecting end of the mandrel body and the connecting part is provided with a limiting clamping and embedding part. According to the connecting mandrel, when the mandrel body is inserted into the connecting sleeve, the mandrel body and the connecting sleeve are connected in an interference fit manner, the anti-rotation part and the limiting embedded part on the mandrel body are connected with the connecting sleeve in an embedded manner, so that the stability of connection of the mandrel body is ensured, the connecting part at the rear end of the mandrel body is connected with the shaft sleeve, the mandrel body and the shaft body are conveniently connected, meanwhile, the mandrel can be conveniently disassembled and assembled, the damage to the mandrel body in the disassembling process is avoided, the connecting mandrel is strong in connection firmness, the service life is greatly prolonged, and therefore the production and use costs are reduced.
Description
Technical Field
The utility model relates to the technical field of connecting pieces, in particular to a connecting mandrel.
Background
The fixed core shafts have different structures, different stresses and different matching of gears. The mounting method is also different. Two types of fit are common, a sliding fit and an interference fit. Sliding fit, such as sliding gear, by slightly pushing the shaft after aligning the shaft with the position and angle. And (3) interference fit, namely when the interference magnitude is small, a heavy hammer can be used for knocking the shaft end to drive the shaft into the shaft. Other objects are used for covering the shaft end before knocking, so that the shaft end is prevented from being damaged. The interference is large, and the shaft can be pressed in by an oil press. Without an oil press, a temporary tool can be quickly made by steel plates, large bolts and the like at the side of the machine, and the shaft can be pulled into or pushed into the gear by the aid of the thread boosting effect. The large magnitude of interference can adopt a heating method (modes such as eddy current heating and the like), and the shaft can be pushed in easily after the gear is heated and expanded, or the shaft can be pushed in after being cooled and contracted reversely. However, the existing mandrels are generally connected through interference fit, and in the connection mode, the interference fit can be gradually worn in the long-term use process, and finally, the mandrels slip relative to the connecting piece, so that the normal use is affected, the whole connecting piece is scrapped, and the production cost is increased.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: in order to overcome the easy wearing and tearing of dabber and connecting portion connection in-process among the prior art and lead to the dabber to skid condemned problem, a connection dabber is provided, when inserting the dabber body in the connecting sleeve, both interference fit connect, the last rotation prevention portion and the spacing inlay card portion of dabber body are connected with the cooperation of adapter sleeve inlay card formula, and then the stability of dabber body coupling has been guaranteed, the connecting portion of its dabber body rear end is connected with the axle sleeve, make things convenient for being connected of dabber body and axis body, also can be convenient for simultaneously to the dismantlement and the installation of dabber, the damage to the dabber body in the dismantlement process has been avoided.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a connecting mandrel comprises a mandrel body, wherein the front end of the mandrel body is provided with an anti-rotation part, the rear end of the mandrel body is provided with a connecting part, and the connecting end of the mandrel body and the connecting part is provided with a limiting and clamping part; the anti-rotation part comprises a connecting shaft, the front end of the connecting shaft is provided with a raised step, and the side surface of the raised step is provided with a limiting clamping groove; the connecting part comprises a connecting plate body, the middle part of the connecting plate body is provided with a connecting hole for connecting a shaft sleeve, and the shaft sleeve is detachably connected to the connecting plate body; the limiting clamping and embedding part comprises a conical protrusion, a plurality of limiting grooves are formed in the conical surface circumference array of the side of the conical protrusion, and the clamping and embedding groove is formed between the limiting clamping and embedding part and the connecting part.
The mandrel body, the anti-rotation part, the connecting part and the limiting clamping and embedding part are of an integrally formed structure and are manufactured through lathe turning. The shaft body is placed on a lathe to be turned according to specific parameter requirements, and the anti-rotation portion, the connecting portion and the limiting clamping portion are sequentially processed.
The mandrel body, the connecting shaft and the conical protrusions are arranged coaxially. The coaxial centers of the mandrel body, the connecting shaft and the conical protrusions are kept, and the stability of the mandrel body in the connecting process can be guaranteed while the mandrel body is machined and edited.
The shaft sleeve is in interference fit or is in threaded connection with the connecting plate body. Through interference fit or threaded connection, the efficiency of assembly connection is improved, and convenient to detach and install.
The embedded groove is a circular groove formed by turning. The embedded groove is used for being embedded and limited with the embedded bulge of the connecting piece, and the transverse deviation of the mandrel body relative to the connecting body is avoided.
The utility model has the beneficial effects that: according to the connecting mandrel, when the mandrel body is inserted into the connecting sleeve, the mandrel body and the connecting sleeve are connected in an interference fit manner, the anti-rotation part and the limiting embedded part on the mandrel body are connected with the connecting sleeve in an embedded manner, so that the stability of connection of the mandrel body is ensured, the connecting part at the rear end of the mandrel body is connected with the shaft sleeve, the mandrel body and the shaft body are conveniently connected, meanwhile, the mandrel can be conveniently disassembled and assembled, the damage to the mandrel body in the disassembling process is avoided, the connecting mandrel is strong in connection firmness, the service life is greatly prolonged, and therefore the production and use costs are reduced.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 2;
fig. 5 is a partially enlarged view at B in fig. 3.
In the figure: 1. the mandrel comprises a mandrel body, 2 parts of rotation prevention parts, 3 parts of connecting parts, 4 parts of limiting and embedding parts, 5 parts of embedding grooves, 21 parts of connecting shafts, 22 parts of protruding steps, 23 parts of limiting and clamping grooves, 31 parts of connecting plate bodies, 32 parts of shaft sleeves, 33 parts of connecting holes, 41 parts of conical protrusions and 42 parts of limiting grooves.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, which is a schematic structural diagram of the present invention, a connecting mandrel comprises a mandrel body 1, wherein a rotation prevention portion 2 is arranged at the front end of the mandrel body 1, a connecting portion 3 is arranged at the rear end of the mandrel body 1, and a limiting and clamping portion 4 is arranged at the connecting end of the mandrel body 2 and the connecting portion 3; the rotation prevention part 2 comprises a connecting shaft 21, the front end of the connecting shaft 21 is provided with a raised step 22, and the side surface of the raised step 22 is provided with a limit clamping groove 23; the connecting part 3 comprises a connecting plate body 31, the middle part of the connecting plate body 31 is provided with a connecting hole 33 for connecting a shaft sleeve 32, and the shaft sleeve 32 is detachably connected to the connecting plate body 31; the limiting clamping and embedding part 4 comprises a conical protrusion 41, a plurality of limiting grooves 42 are formed in the conical surface circumference array on the side of the conical protrusion 41, and a clamping and embedding groove 5 is formed between the limiting clamping and embedding part 4 and the connecting part 3.
Referring to fig. 1 to 4, the mandrel body 1, the rotation preventing portion 2, the connecting portion 3, and the limiting and clamping portion 4 are integrally formed and are turned by a lathe. The shaft body is placed on a lathe to be turned according to specific parameter requirements, and an anti-rotation part 2, a connecting part 3 and a limiting embedded part 4 are sequentially machined.
As shown in fig. 1 to 4, the mandrel body 1, the connecting shaft 21 and the conical projection 41 are coaxially disposed. The coaxiality of the mandrel body 1, the connecting shaft 21 and the conical protrusion 41 is kept, and the stability of the connection process of the mandrel body 1 can be ensured while the mandrel body is turned and edited.
As shown in fig. 2 and 4, the sleeve 32 is connected to the connecting plate 31 by interference fit or screw thread. Through interference fit or threaded connection, the efficiency of assembly connection is improved, and convenient to detach and install.
As shown in fig. 1 to 5, the snap-fit groove 5 is a circular groove formed by turning. The embedded groove 5 is used for being embedded in the embedded bulge of the connecting piece in a limited mode, and the mandrel body 1 is prevented from shifting relative to the transverse direction of the connecting body.
During the use, when inserting dabber body 1 in the connecting sleeve, both interference fit connect, the portion of preventing changeing 2 and spacing inlay card portion 4 on the dabber body 1 are connected with the cooperation of adapter sleeve inlay card formula, and then the stability of dabber body 1 connection has been guaranteed, the connecting portion of its dabber body 1 rear end is connected with axle sleeve 32, make things convenient for being connected of dabber body 1 and axis body, also can be convenient for simultaneously to the dismantlement and the installation of dabber, the damage to the dabber body in the dismantlement process has been avoided, this connection dabber firm in connection nature is strong, greatly prolonged service life, thereby production use cost has been reduced.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. A connecting mandrel comprises a mandrel body (1), and is characterized in that the front end of the mandrel body (1) is provided with an anti-rotation part (2), the rear end of the mandrel body (1) is provided with a connecting part (3), and the connecting end of the mandrel body and the connecting part (3) is provided with a limiting clamping and embedding part (4); the anti-rotation part (2) comprises a connecting shaft (21), the front end of the connecting shaft (21) is provided with a raised step (22), and the side surface of the raised step (22) is provided with a limiting clamping groove (23); the connecting part (3) comprises a connecting plate body (31), a connecting hole (33) for connecting the shaft sleeve (32) is formed in the middle of the connecting plate body (31), and the shaft sleeve (32) is detachably connected to the connecting plate body (31); spacing inlay card portion (4) are including conical arch (41), a plurality of spacing groove (42) have been seted up to conical arch (41) side conical surface circumference array, and are equipped with inlay card groove (5) between spacing inlay card portion (4) and connecting portion (3).
2. A connecting mandrel as claimed in claim 1 wherein: the mandrel body (1), the anti-rotation part (2), the connecting part (3) and the limiting clamping and embedding part (4) are of an integrated structure and are manufactured through lathe turning.
3. A connecting mandrel as claimed in claim 1 wherein: the mandrel body (1), the connecting shaft (21) and the conical protrusions (41) are arranged coaxially.
4. A connecting mandrel as claimed in claim 1 wherein: the shaft sleeve (32) is in interference fit or is in threaded connection with the connecting plate body (31).
5. A connecting mandrel as claimed in claim 1 wherein: the clamping and embedding groove (5) is a circular groove formed by turning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121153330.6U CN215370674U (en) | 2021-05-26 | 2021-05-26 | Connecting mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121153330.6U CN215370674U (en) | 2021-05-26 | 2021-05-26 | Connecting mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215370674U true CN215370674U (en) | 2021-12-31 |
Family
ID=79631715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121153330.6U Active CN215370674U (en) | 2021-05-26 | 2021-05-26 | Connecting mandrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215370674U (en) |
-
2021
- 2021-05-26 CN CN202121153330.6U patent/CN215370674U/en active Active
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