CN213828012U - Reverse positioning fixture for special-shaped shell parts - Google Patents
Reverse positioning fixture for special-shaped shell parts Download PDFInfo
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- CN213828012U CN213828012U CN202022529528.1U CN202022529528U CN213828012U CN 213828012 U CN213828012 U CN 213828012U CN 202022529528 U CN202022529528 U CN 202022529528U CN 213828012 U CN213828012 U CN 213828012U
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Abstract
The utility model belongs to the technical field of the mechanical fixture design, especially, relate to a reverse positioning fixture of dysmorphism casing class part. The double-ended screw bolt positioning device comprises a fixed plate, a movable pressing plate, a spherical shoulder nut, a double-ended screw bolt, a spring, a supporting nail, a base, a cylindrical positioning pin, a screw, a cylindrical pin and a rhombic positioning pin, wherein a flange plate for compressing a part is arranged between the movable pressing plate and the fixed plate, the cylindrical positioning pin is used for fixing the part and the fixed plate, the rhombic positioning pin is used for fixing the part and the fixed plate, the spring is sleeved on the double-ended screw bolt, the double-ended screw bolt and the spherical shoulder nut are used for connecting the movable pressing plate and the fixed plate, the supporting nail is connected with the fixed plate to tightly push the movable pressing plate, the screw is used for connecting the base and the fixed plate together, the cylindrical pin is used for fixing the position of the base and the fixed plate, and a connecting groove of the base is connected with a workbench. Direct contact of the part and the workbench is changed into indirect contact, resonance of the part and the workbench is eliminated, and the problem of cutter vibration during conventional end face pressing processing is solved.
Description
Technical Field
The utility model belongs to the technical field of the mechanical fixture design, especially, relate to a reverse positioning fixture of dysmorphism casing class part.
Background
The large-diameter circular arc-shaped part has the advantages that a plurality of special-shaped parts are arranged in an aviation oil delivery pump and an oil delivery pump, the total length of the parts is long, an outer circle cannot be held in machining, the area difference between two end faces of the parts is large, and a vibrating cutter exists in small end face positioning when large end face elements are machined.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the utility model provides a reverse positioning fixture of dysmorphism casing class part to solve the conventional cutter problem that shakes when pressing the terminal surface processing.
The technical scheme of the utility model is that:
in a first aspect, the reverse positioning clamp for the special-shaped shell parts comprises a fixing plate 1, a movable pressing plate 2, a spherical shoulder nut 4, a stud 5, a spring 6, a supporting nail 9, a base 11, a cylindrical positioning pin 12, a screw 13, a cylindrical pin 14 and a rhombic positioning pin 15, the flange plate of the pressing part 10 is arranged between the movable pressing plate 2 and the fixing plate 1, the cylindrical positioning pin 12 is used for fixing the part 10 and the fixing plate 1, the diamond positioning pin 15 is used for fixing the part 10 and the fixing plate 1, the spring 6 is sleeved on the stud 5, the stud 5 and the spherical shoulder nut 4 are used for connecting the movable pressing plate 2 with the fixing plate 1, the supporting nail 9 is connected onto the fixing plate 1 and tightly supports the movable pressing plate 2, the screw 13 is used for connecting the base 11 with the fixing plate 1 together, the cylindrical pin 14 is used for fixing the positions of the base 11 and the fixing plate 1, and the connecting groove of the base 11 is connected with the workbench.
Further, still include: the conical surface gasket 3 is arranged between the spherical shoulder nut 4 and the movable pressing plate 2.
Further, still include: and the set screw 8 is arranged between the fixing plate 1 and the stud 5 to limit the rotation of the stud 5.
Further, still include: and a washer 7, wherein the washer 7 is arranged between the spring 6 and the moving platen 2.
Further, the fixing plate 1 is in interference fit with the cylindrical positioning pin 12H 7/p 6.
Further, the fixing plate 1 is in interference fit with the diamond-shaped positioning pin 15H 7/p 6.
Further, part 10 is clearance fit H7/g6 with cylindrical locating pin 12. Part 10 is clearance fit H7/g6 with diamond shaped locating pin 15.
The utility model has the advantages that: the utility model discloses a reverse positioning anchor clamps, clamp plate reverse compression part have increased the location area, increase location intensity, and the part changes indirect contact into by direct contact with the workstation, eliminates the resonance's of part and workstation the condition, solves the conventional terminal surface and adds the positioning anchor clamps of shake sword problem, easily dismouting part man-hour.
Drawings
Fig. 1 is a front view of the reverse positioning fixture for special-shaped shell parts of the present invention.
Fig. 2 is a top view of the reverse positioning fixture for special-shaped shell parts of the present invention.
Fig. 3 is a sectional view taken along line CC in fig. 2.
Wherein, 1-fixing plate, 2-moving pressing plate, 3-conical washer, 4-spherical shoulder nut, 5-double-end stud 6-spring, 7-washer, 8-set screw, 9-supporting nail, 10-part,
11-base 12-cylindrical positioning pin, 13-screw, 14-cylindrical pin, 15-rhombic positioning pin
Detailed Description
The invention will be further explained with reference to the following figures and examples:
because a plurality of special-shaped parts are arranged in an aviation fuel delivery pump and a fuel supply pump, the total length of the parts is long, an excircle cannot be held during machining, the area difference between two end surfaces of the parts is large, and a vibrating cutter exists in the small end surface positioning mode during machining of large end surface elements. When the positioning clamp is designed, the structural mode of the positioning clamp is economically and reasonably selected according to the processing requirements, the shape and the size of a part and the characteristics of equipment used in processing. The part is reversely pressed by the pressing plate, so that the positioning area is increased, the positioning strength is increased, the part is indirectly contacted with the workbench instead of being directly contacted, the resonance condition between the part and the workbench is eliminated,
example (b):
fig. 1 is a front view of the reverse positioning fixture for special-shaped shell parts of the present invention. Fig. 2 is a top view of the reverse positioning fixture for special-shaped shell parts of the present invention. Fig. 3 is a sectional view taken along line CC in fig. 2. The device comprises a fixing plate 1, a movable pressing plate 2, a conical washer 3, a spherical shoulder nut 4, a stud 5, a spring 6, a washer 7, a set screw 8, a supporting nail 9, a part 10, a base 11, a cylindrical positioning pin 12, a screw 13, a cylindrical pin 14 and a rhombic positioning pin 15. The flange plate of the pressing part 10 is arranged between the movable pressing plate 2 and the fixing plate 1, the cylindrical positioning pin 12 is used for fixing the part 10 and the fixing plate 1, the diamond positioning pin 15 is used for fixing the part 10 and the fixing plate 1, the spring 6 is sleeved on the stud 5, the stud 5 and the spherical shoulder nut 4 are used for connecting the movable pressing plate 2 with the fixing plate 1, the conical surface gasket 3 is arranged between the spherical shoulder nut 4 and the movable pressing plate 2, the gasket 7 is arranged between the spring 6 and the movable pressing plate 2, the supporting nail 9 is connected to the fixing plate 1 and tightly pushes the movable pressing plate 2, the spherical shoulder nut 4 presses the conical surface gasket 3, the movable pressing plate 2 is used for pressing the part 10, the screw 13 is used for connecting the base 11 with the fixing plate 1, the cylindrical pin 14 is used for fixing the positions of the base 11 and the fixing plate 1, the connecting groove of the base 11 is connected with a workbench, and the fastening screw 8 is arranged between the fixing plate 1 and the stud 5 for limiting the rotation of the stud 5.
The positioning device comprises a cylindrical positioning pin 12, a fixing part 10, a fixing plate 1, a diamond positioning pin 15, a spring 6, a conical washer 3, a washer 7, a supporting nail 9, a spherical shoulder nut 4, a movable pressing plate 2, a screw 13, a base 11, a fixing plate 1, a cylindrical pin 14 and a workbench, wherein the cylindrical positioning pin 12 is used for fixing the fixing part 10 and the fixing plate 1, the diamond positioning pin 15 is used for fixing the fixing part 10 and the fixing plate 1, the spring 6 is installed on the stud 5, the conical washer 3 is installed on the stud 5, the washer 7 is installed on the stud 5, the supporting nail 9 is connected to the fixing plate 1 and tightly pushes the movable pressing plate 2, the spherical shoulder nut 4 tightly presses the conical washer 3, the movable pressing plate 2 tightly the part 10, the base 11 and the fixing plate 1, the cylindrical pin 14 is used for fixing the positions of the base 11 and the fixing plate 1, and the connecting groove of the base 11 is connected with the workbench.
Claims (7)
1. A reverse positioning clamp for special-shaped shell parts is characterized by comprising a fixing plate (1), a movable pressing plate (2), a spherical shouldered nut (4), a stud (5), a spring (6), a supporting nail (9), a base (11), a cylindrical positioning pin (12), a screw (13), a cylindrical pin (14) and a rhombic positioning pin (15), wherein a flange plate of a pressing part (10) is arranged between the movable pressing plate (2) and the fixing plate (1), the cylindrical positioning pin (12) is used for fixing the part (10) and the fixing plate (1), the rhombic positioning pin (15) is used for fixing the part (10) and the fixing plate (1), the spring (6) is sleeved on the stud (5), the movable pressing plate (2) is connected with the fixing plate (1) through the stud (5) and the spherical shouldered nut (4), the supporting nail (9) is connected with the fixing plate (1) and tightly pushes up the movable pressing plate (2), the base (11) and the fixing plate (1) are connected together through the screws (13), the cylindrical pins (14) fix the positions of the base (11) and the fixing plate (1), and the connecting grooves of the base (11) are connected with the workbench.
2. The clamp of claim 1, further comprising: the conical surface gasket (3), the conical surface gasket (3) sets up between sphere shoulder nut (4) and removal clamp plate (2).
3. The clamp of claim 1, further comprising: the set screw (8), the set screw (8) sets up and restricts the rotation of stud (5) between fixed plate (1) and stud (5).
4. The clamp of claim 1, further comprising: and the gasket (7) is arranged between the spring (6) and the movable pressure plate (2).
5. The clamp according to claim 1, characterized in that the fixing plate (1) is in interference fit with the cylindrical positioning pin (12) H7/p 6.
6. The clamp according to claim 1, characterized in that the fixing plate (1) is in interference fit with the diamond-shaped positioning pin (15) H7/p 6.
7. The clamp of claim 1, wherein the part (10) is clearance fitted with cylindrical locating pins (12) H7/g6, and the part (10) is clearance fitted with diamond-shaped locating pins (15) H7/g 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022529528.1U CN213828012U (en) | 2020-11-03 | 2020-11-03 | Reverse positioning fixture for special-shaped shell parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022529528.1U CN213828012U (en) | 2020-11-03 | 2020-11-03 | Reverse positioning fixture for special-shaped shell parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213828012U true CN213828012U (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022529528.1U Active CN213828012U (en) | 2020-11-03 | 2020-11-03 | Reverse positioning fixture for special-shaped shell parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213828012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749960A (en) * | 2022-05-18 | 2022-07-15 | 中船重工重庆液压机电有限公司 | Clamp for processing end face of special-shaped connecting pipe and using method |
-
2020
- 2020-11-03 CN CN202022529528.1U patent/CN213828012U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749960A (en) * | 2022-05-18 | 2022-07-15 | 中船重工重庆液压机电有限公司 | Clamp for processing end face of special-shaped connecting pipe and using method |
| CN114749960B (en) * | 2022-05-18 | 2023-08-25 | 中船重工重庆液压机电有限公司 | Clamp for machining end face of special-shaped connecting pipe and using method |
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