CN210335169U - Thin-wall cavity part expansion mechanism - Google Patents
Thin-wall cavity part expansion mechanism Download PDFInfo
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- CN210335169U CN210335169U CN201920873158.8U CN201920873158U CN210335169U CN 210335169 U CN210335169 U CN 210335169U CN 201920873158 U CN201920873158 U CN 201920873158U CN 210335169 U CN210335169 U CN 210335169U
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- baffle
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- pressing plate
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Abstract
The utility model provides a thin wall cavity part tight mechanism that expands. The mechanism comprises: the device comprises a group of fixed blocks, a group of bolts, a connecting rod, a baffle, an expansion block, a limiting plate, a pressing plate and a hexagonal nut with a shoulder; the pressing plate is tightly pressed and attached to the non-limiting surface of the limiting plate; the limiting surface of the limiting plate is tightly pressed and attached to the end surface of the part with the special-shaped section; in a cavity formed by the pressing plate and the part, the baffle plate tightly presses the expansion block on the pressing plate; the screw rod of the bolt sequentially penetrates through the bolt hole of the baffle, the bolt hole of the expansion block, the bolt hole of the limiting plate and the bolt hole of the pressing plate, two ends of the screw rod respectively extend out of the baffle and the pressing plate, the screw rod extending out of the baffle is matched with the nut of the bolt to press the baffle, and the screw rod extending out of the pressing plate is matched with the hexagonal nut with the shoulder to press the pressing plate; the connecting rod runs through a set of bolts that stretches out the baffle, and the part that the connecting rod stretches out the bolt is fixed with the mounting, realizes the spacing of a set of bolt. The utility model provides a can't satisfy the problem that special-shaped cross section thin wall parts machining rises and tightly.
Description
Technical Field
The utility model belongs to the machining technology relates to a thin wall cavity part tight mechanism that expands.
Background
In the machining process of the machined part, the inner cavity of the tensioning part is often met, so that the phenomena of deformation and the like in the part machining process are prevented, generally, the requirement can be met by adopting an expanding sleeve structure to tension the circular inner cavity, the thin-wall part with the special-shaped section is often machined in practical application, and the circular expanding sleeve structure cannot meet the practical requirement at the moment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the problem of can't satisfy special-shaped cross section thin wall part processing and rise tightly is solved.
The technical scheme of the utility model is that:
in a first aspect, a thin-wall cavity part expansion mechanism is provided, which includes: the device comprises a group of fixed blocks, a group of bolts, a connecting rod, a baffle, an expansion block, a limiting plate, a pressing plate and a hexagonal nut with a shoulder;
the pressing plate is tightly pressed and attached to the non-limiting surface of the limiting plate; the limiting surface of the limiting plate is tightly pressed and attached to the end surface of the part with the special-shaped section; in a cavity formed by the pressing plate and the part, the baffle plate tightly presses the expansion block on the pressing plate; the screw rod of the bolt sequentially penetrates through the bolt hole of the baffle, the bolt hole of the expansion block, the bolt hole of the limiting plate and the bolt hole of the pressing plate, two ends of the screw rod respectively extend out of the baffle and the pressing plate, the screw rod extending out of the baffle is matched with the nut of the bolt to press the baffle, and the screw rod extending out of the pressing plate is matched with the hexagonal nut with the shoulder to press the pressing plate; the connecting rod runs through a set of bolts that stretches out the baffle, and the part that the connecting rod stretches out the bolt is fixed with the mounting, realizes the spacing of a set of bolt.
Further, the mechanism further comprises: an external connection block;
the screw rod of bolt runs through the bolt hole of baffle, the bolt hole of tight piece that expands, the bolt hole of limiting plate, the bolt hole of clamp plate and the bolt hole of external block in proper order, and the screw rod that stretches out the external block cooperates with shouldered hexagon nut, makes shouldered hexagon nut sticis the external block.
Furthermore, the bolt holes of the baffle plate, the bolt holes of the expansion block, the bolt holes of the limiting plate, the bolt holes of the pressing plate and the bolt holes of the external connection block are coaxial holes, and the diameters of the bolt holes are consistent.
Further, the fixed block is a nut, and the connecting end of the connecting rod is provided with an external thread matched with the internal thread of the nut.
Further, the expansion block is expandable under preset conditions.
Further, the number of a set of fixed block is 2, and the number of a set of bolt is 2, and the number of a set of hexagonal nut of taking the shoulder is 2.
The utility model has the advantages that: the special-shaped section thin-wall part tensioning device can meet the requirement for tensioning in the machining of special-shaped section thin-wall parts and meet the requirement for tensioning in actual machining.
Drawings
Fig. 1 is the utility model provides a thin wall cavity part tight mechanism's of expanding schematic diagram.
Detailed Description
The present invention will be described in further detail below.
The utility model provides a thin wall cavity part tight mechanism that expands, as shown in figure 1, this mechanism includes:
the hexagonal thin nut comprises a hexagonal thin nut 1, a bolt 2, a connecting rod 3, a baffle 4, an expansion block 5, a part 6, a limiting plate 7, a pressing plate 8, an external block 9 and a hexagonal nut with a shoulder 10.
The baffle 4 is made of steel, the expansion block 5 is made of soft rubber, the limiting plate 6 is made of hard rubber 7, the pressing plate is made of material steel, and the external block 8 is made of aluminum.
The utility model respectively passes the two ends of the connecting rod 3 through the end holes of the bolt 2, and prevents the bolt 2 from falling off through the threaded connection of the two hexagonal thin nuts 1 and the connecting rod 3;
the thread ends of two bolts 2 of the assembled mechanism sequentially pass through a baffle 4, an expansion block 5, a limiting plate 7, a pressing plate 8 and an external block 9 by adjusting the position of a hexagonal thin nut 1, and then the whole expansion mechanism is combined into a whole by connecting the hexagonal nut with a shoulder and the bolts 2 in a threaded manner, and at the moment, the hexagonal nut with the shoulder is in a loose state;
one end of the assembled expansion mechanism connecting rod 3 is arranged in a cavity of the part 6 until the surface A of the limiting surface of the limiting plate 7 is attached to the end surface of the part 6;
after the hexagonal nut with the shoulder is attached to the position, the hexagonal nut with the shoulder 10 is clockwise screwed, so that the distance between the external block 9 and the baffle 4 is gradually reduced, the pressure on the expansion block 5 is gradually increased, at the moment, the expansion block 5 gradually expands due to the pressure, and the screwing of the hexagonal nut with the shoulder 6 is stopped until the outer molded surface of the expansion block 5 is completely attached to the cavity of the part 6 and the expansion amount of the part 6 reaches the expansion amount required by processing;
after the machining is finished, the hexagonal nut with the shoulder 10 is rotated anticlockwise, the limiting plate 7, the pressing plate 8 and the external connecting block 9 move outwards along with the loosening of the hexagonal nut with the shoulder 10 in the rotating process, and at the moment, the expansion block 5 shrinks gradually due to the reduction of pressure until the expansion block returns to a free state;
after the hexagonal nut with the shoulder 10 is completely loosened, the whole expansion mechanism is taken out from the cavity of the part 6 through manually or mechanically clamping the external block 9, and then the whole operation process can be completed.
Claims (6)
1. The utility model provides a thin wall cavity part tight mechanism that expands which characterized in that includes: the device comprises a group of fixed blocks, a group of bolts, a connecting rod, a baffle, an expansion block, a limiting plate, a pressing plate and a hexagonal nut with a shoulder;
the pressing plate is tightly pressed and attached to the non-limiting surface of the limiting plate; the limiting surface of the limiting plate is tightly pressed and attached to the end surface of the part with the special-shaped section; in a cavity formed by the pressing plate and the part, the baffle plate tightly presses the expansion block on the pressing plate; the screw rod of the bolt sequentially penetrates through the bolt hole of the baffle, the bolt hole of the expansion block, the bolt hole of the limiting plate and the bolt hole of the pressing plate, two ends of the screw rod respectively extend out of the baffle and the pressing plate, the screw rod extending out of the baffle is matched with the nut of the bolt to press the baffle, and the screw rod extending out of the pressing plate is matched with the hexagonal nut with the shoulder to press the pressing plate; the connecting rod runs through a set of bolts that stretches out the baffle, and the part that the connecting rod stretches out the bolt is fixed with the mounting, realizes the spacing of a set of bolt.
2. The mechanism of claim 1, further comprising: an external connection block;
the screw rod of bolt runs through the bolt hole of baffle, the bolt hole of tight piece that expands, the bolt hole of limiting plate, the bolt hole of clamp plate and the bolt hole of external block in proper order, and the screw rod that stretches out the external block cooperates with shouldered hexagon nut, makes shouldered hexagon nut sticis the external block.
3. The mechanism of claim 2, wherein the bolt holes of the baffle plate, the bolt holes of the expansion block, the bolt holes of the limiting plate, the bolt holes of the pressing plate and the bolt holes of the circumscribed block are coaxial holes and have the same diameter.
4. A mechanism according to claim 1, wherein the fixed block is a nut and the connecting end of the connecting rod is provided with an external thread which engages with an internal thread of the nut.
5. The mechanism of claim 1, wherein the expansion block is expandable under preset conditions.
6. The mechanism of claim 1, wherein the number of the set of fixed blocks is 2, the number of the set of bolts is 2, and the number of the set of hexagonal nuts with shoulders is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873158.8U CN210335169U (en) | 2019-06-11 | 2019-06-11 | Thin-wall cavity part expansion mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873158.8U CN210335169U (en) | 2019-06-11 | 2019-06-11 | Thin-wall cavity part expansion mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210335169U true CN210335169U (en) | 2020-04-17 |
Family
ID=70185522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920873158.8U Active CN210335169U (en) | 2019-06-11 | 2019-06-11 | Thin-wall cavity part expansion mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210335169U (en) |
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2019
- 2019-06-11 CN CN201920873158.8U patent/CN210335169U/en active Active
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