CN211249879U - Expansion mandrel dismounting tool - Google Patents
Expansion mandrel dismounting tool Download PDFInfo
- Publication number
- CN211249879U CN211249879U CN201922179450.2U CN201922179450U CN211249879U CN 211249879 U CN211249879 U CN 211249879U CN 201922179450 U CN201922179450 U CN 201922179450U CN 211249879 U CN211249879 U CN 211249879U
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- China
- Prior art keywords
- mandrel
- head
- elastic expansion
- outer sleeve
- pin
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Abstract
The utility model discloses an expanding mandrel dismounting tool, which comprises a mandrel, an elastic expansion head, a pin and an outer sleeve, wherein the mandrel is of a long and thin shaft structure, one end of the mandrel is a conical head and is used for tightly propping the elastic expansion head, and the other end of the mandrel is a handle unthreaded hole; a pin is inserted into the unthreaded hole and used for rotating; the inner wall of the outer sleeve is provided with threads, and the mandrel is connected with the outer sleeve through the threads. The elastic expansion head is radially expanded through the rotating pin, an inner hole of the expansion part is convenient to disassemble, the sleeve and the bush type part are convenient to axially disassemble, the disassembling efficiency is improved, and the surface of the part is protected.
Description
Technical Field
The utility model belongs to the technical field of the frock part, concretely relates to inflation dabber extracting tool.
Background
When parts such as sleeves and bushings with larger major diameters are disassembled, parts are difficult to disassemble due to small radial clearance of the matching pairs, and the parts are often disassembled by adopting an axial knocking method, so that the end faces of the parts are easy to damage, and even the parts are scrapped. For improving the disassembly efficiency, a tool clamp capable of conveniently disassembling the parts needs to be designed, so that the surface damage of the parts is prevented.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose: the utility model provides an inflation dabber extracting tool carries out the axial to sleeve, bush class part and dismantles, improves and dismantles efficiency, protects the part surface simultaneously.
The utility model discloses technical scheme: an expansion mandrel dismounting tool comprises a mandrel, an elastic expansion head, a pin and an outer sleeve, wherein the mandrel is of a long and thin shaft structure, one end of the mandrel is a conical head and can be inserted into the elastic expansion head, the middle part of the mandrel is provided with external threads and is connected with the outer sleeve, and the other end of the mandrel is a handle unthreaded hole; a pin is inserted into the unthreaded hole and used for rotating; the inner wall of the outer sleeve is provided with threads, and the mandrel is connected with the outer sleeve through internal threads.
The head of the elastic expansion head is provided with a groove, and the head of the expansion head can radially expand when the head is pushed by the front of the mandrel conical head; based on the principle of a screw rod, the core shaft is enabled to rotate and move along the axial direction through the rotating pin, the slotted elastic expansion head is pushed to expand in the radial direction, the inner cavity of the part is expanded, the elastic expansion head and the part are locked, and finally the part can be pulled out.
The utility model has the advantages that: adopt simple reliable mechanical structure, expand tightly and dismantle fast the part through the first radial expansion that rises of elasticity, can improve the dismantlement efficiency of sleeve, bush class part greatly, effectively protect the surface quality who is dismantled the part simultaneously.
Drawings
Fig. 1 is a schematic structural view of the expansion mandrel dismounting tool of the present invention;
the reference numbers in the drawings are respectively: 1. mandrel, 2, jacket, 3, elastic expansion head, 4, and pin.
Fig. 2 is the working principle diagram of the expanding mandrel dismounting tool of the utility model.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Examples
The utility model provides an inflation dabber extracting tool, includes dabber 1, overcoat 2, elasticity rises head 3, round pin 4, wherein: the mandrel 1 is of a long and thin shaft structure, one end of the mandrel is a conical head which can be inserted into the elastic expansion head 3, the other end of the mandrel is a unthreaded hole with a handle, and a pin 4 can be inserted for rotation; the inner wall of the outer sleeve 2 is provided with threads, the middle part of the mandrel 1 is provided with external threads, and the mandrel 1 is connected with the outer sleeve 2 through the threads. The head of the elastic expansion head 3 is provided with a groove, and the head of the expansion head can be radially expanded when the head is pushed by the conical head of the mandrel 1. When the device is used, the elastic expansion head 3 is firstly plugged into a hole of a part to be disassembled, the outer sleeve 2 can be fixed by one hand, the pin 4 at the end part of the mandrel 1 is rotated by the other hand, so that the mandrel 1 moves along the axial direction, the elastic expansion head 3 is pushed to radially expand, the inner cavity of the part is expanded, the elastic expansion head 3 and the part are locked, and finally the part can be pulled out.
Claims (2)
1. An expansion mandrel extracting tool which characterized in that: the core shaft is of a long and thin shaft structure, one end of the core shaft is a conical head and can be inserted into the elastic expansion head, the middle of the core shaft is provided with external threads and is connected with the outer sleeve, and the other end of the core shaft is provided with a handle unthreaded hole; a pin is inserted into the unthreaded hole and used for rotating; the inner wall of the outer sleeve is provided with threads.
2. The expansion mandrel removal tool of claim 1, wherein: the head of the elastic expansion head is provided with a groove, and when the head of the elastic expansion head is pushed by the mandrel conical head, the head of the expansion head can be radially expanded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922179450.2U CN211249879U (en) | 2019-12-09 | 2019-12-09 | Expansion mandrel dismounting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922179450.2U CN211249879U (en) | 2019-12-09 | 2019-12-09 | Expansion mandrel dismounting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211249879U true CN211249879U (en) | 2020-08-14 |
Family
ID=71982832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922179450.2U Active CN211249879U (en) | 2019-12-09 | 2019-12-09 | Expansion mandrel dismounting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211249879U (en) |
-
2019
- 2019-12-09 CN CN201922179450.2U patent/CN211249879U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |