CN117840784A - Combined positioning and supporting clamp for cooling ring of combustion chamber and application method of combined positioning and supporting clamp - Google Patents
Combined positioning and supporting clamp for cooling ring of combustion chamber and application method of combined positioning and supporting clamp Download PDFInfo
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- CN117840784A CN117840784A CN202311735725.0A CN202311735725A CN117840784A CN 117840784 A CN117840784 A CN 117840784A CN 202311735725 A CN202311735725 A CN 202311735725A CN 117840784 A CN117840784 A CN 117840784A
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- 238000001816 cooling Methods 0.000 title claims abstract description 27
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000003825 pressing Methods 0.000 claims description 33
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The invention relates to a combined positioning and supporting clamp for a cooling ring of a combustion chamber and a using method thereof. The clamp forms auxiliary support for the thin wall and the part with poor rigidity of the cooling ring, avoids or reduces the deformation of the part during processing due to the poor rigidity, and effectively improves the matching precision of the part and the clamp. The technical scheme of the invention comprises a circular clamp base, wherein a plurality of strip-shaped steps I and II with the same number are uniformly distributed on the upper surface of the inner side clamp base and the outer side clamp base of a positioning ring of the circular clamp base; the first supporting block and the second supporting block are respectively T-shaped, the transverse edge of the T-shape is arc-shaped matched with the radian of the positioning ring, the arc directions of the first supporting block and the second supporting block are opposite, the first supporting block is pressed on the first strip-shaped step and is attached to the outer wall of the positioning ring, and the second supporting block is pressed on the second strip-shaped step and is attached to the positioning ring; the clamp plate is a Y-shaped hook-shaped clamp plate, is arranged between the first supporting blocks on the clamp base and compresses the arc edges of the first supporting blocks.
Description
Technical Field
The invention relates to the technical field of machining of aero-engine combustor casing parts, in particular to a combined positioning and supporting clamp for a combustor cooling ring and a using method thereof.
Background
The cooling ring part of the combustion chamber is widely applied to the manufacture of parts such as the combustion chamber of the aero-engine, a casing connecting piece and the like. For the combustion chamber casing part with good rigidity, the part processing can be completed by using a simple positioning and clamping mode, but for the thin-wall cooling ring part with poor rigidity, the conventional positioning clamp cannot form effective support for the part, the part is greatly influenced by cutting force in the processing process, and particularly, the part has large deformation after processing at the part with thin wall and poor rigidity, the processing precision is low, and the consistency of the wall thickness after processing is poor.
Therefore, in order to improve the machining precision of the cooling ring part, the reliability of the matching of the cooling ring and the positioning clamp is improved by designing a new combined positioning support clamp, so that the purposes of improving the positioning state and meeting the part machining requirement are achieved.
Disclosure of Invention
The invention provides a combined positioning support clamp for a cooling ring of a combustion chamber and a use method thereof, which are used for solving the problem of low machining precision of the cooling ring part, wherein the clamp forms auxiliary support for the thin wall and the part with poor rigidity of the cooling ring, so that the deformation of the part during machining due to the poor rigidity is avoided or reduced, and the matching precision of the part and the clamp is effectively improved.
In order to solve the problems existing in the prior art, the technical scheme of the invention is as follows: a be used for combustion chamber cooling ring combination location support anchor clamps which characterized in that: the clamp comprises a circular clamp base, a pressing plate, a first supporting block and a second supporting block; the middle part of the upper surface of the circular clamp base is provided with a convex positioning ring, the upper surface of the clamp base on the inner side and the outer side of the positioning ring is uniformly provided with a plurality of first strip-shaped steps and second strip-shaped steps with the same number, and each group of first strip-shaped steps and second strip-shaped steps are coaxially arranged along the radial direction of the clamp base;
the first supporting block and the second supporting block are respectively T-shaped, the transverse edge of the T-shape is arc-shaped matched with the radian of the positioning ring, the arc directions of the first supporting block and the second supporting block are opposite, the first supporting block is pressed on the first bar-shaped step and is attached to the outer wall of the positioning ring, and the second supporting block is pressed on the second bar-shaped step and is attached to the positioning ring;
the pressing plate is a Y-shaped hook-shaped pressing plate, is arranged between the first supporting blocks on the clamp base and compresses the arc edges of the first supporting blocks.
Further, the first strip-shaped step is provided with two first threaded holes; two threaded holes II are formed in the strip-shaped step II; and a U-shaped groove and a threaded hole III are formed in the clamp base between the first strip-shaped steps.
Further, the middle part is provided with waist type hole on the clamp plate, and one side is provided with the round hole, and waist type hole and round hole pass through support double-screw bolt and double-screw bolt one with screw hole three and U type groove cooperation respectively to be connected to realize back and forth movement through the U type groove.
Further, the upper end surface of the positioning ring is the same as the upper end surface of the first step, and the upper end surface of the second step is lower than the upper end surface of the positioning ring.
Further, the vertical edges of the first supporting block and the second supporting block are respectively provided with a waist-shaped groove, and the waist-shaped grooves are arranged opposite to the first threaded hole and the second threaded hole.
Further, the first bar step and the second bar step are respectively provided with 8.
Further, a first compression nut and a second compression nut are arranged on the support stud and the first stud, and the pressing plate is compressed through the first compression nut and the second compression nut.
Further, a first screw and a second screw are respectively arranged in the first screw hole.
A be used for combustion chamber cooling ring combination location support anchor clamps which characterized in that: and a screw III and a screw IV are respectively arranged in the threaded hole II.
The application method of the combined positioning and supporting clamp for the cooling ring of the combustion chamber comprises the following steps:
the first step: placing the clamp base on a workbench of a numerical control vertical lathe, penetrating a connecting hole arranged on the clamp base by using a screw, and fixing the clamp base on the workbench;
and a second step of: when the part is installed, the part is horizontally placed on the clamp, the lower end face of the part is attached to the upper end face of the step-shaped positioning ring of the clamp, the position of the pressing plate is adjusted, the pressing face of the pressing plate is attached to the upper end face of the part, the first pressing nut and the second pressing nut tightly press the part on the base of the clamp;
and a third step of: adjusting the supporting position of the first supporting block, enabling the arc supporting surface at the right end of the first supporting block to be attached to the outer circle at the left end of the part by sliding the first supporting block left and right, and pressing the first screw and the second screw after the supporting position is adjusted, so that the shape of the first part of the supporting block plays a supporting role;
fourth step: and after the supporting position is adjusted, the third screw and the fourth screw are pressed, and the second supporting block plays a supporting role on the inner hole of the part.
Fifth step: and (5) installing a cutter and processing parts.
Compared with the prior art, the invention has the following advantages:
1) According to the invention, the pressing plate is arranged to firmly press the part in the annular groove on the clamp base, so that the rear end face of the part is tightly attached to the upper end face of the clamp positioning ring, and the positioning gap between the rear end face of the part and the positioning face of the clamp is eliminated or weakened, so that the axial matching precision of the positioning clamp and the part is improved, and the deformation of the end face of the part during processing is controlled.
2) According to the invention, the first supporting block is arranged to form auxiliary support for the outer circular web of the part, when the supporting position of the first supporting block is adjusted by adjusting the connecting position of the waist-shaped groove, the first supporting block can be slid left and right to enable the right circular arc supporting surface of the first supporting block to be attached to the outer circle of the left end of the part, after the supporting position is adjusted, the first pressing screw and the second pressing screw are used for supporting the shape of the part, so that the rigidity of the outer circular web of the part is improved, and deformation caused by outward forced extrusion of the part during processing is reduced.
3) According to the invention, the second supporting block is arranged to form auxiliary support for the inner shape of the part, when the supporting position of the second supporting block is adjusted by adjusting the connecting position of the waist-shaped groove, the second supporting block can be slid left and right to enable the left arc supporting surface of the second supporting block to be attached to the inner hole at the right end of the part, after the supporting position is adjusted, the third pressing screw and the fourth pressing screw are used for supporting the inner hole of the part, so that the rigidity of the inner hole of the part is improved, and deformation caused by inward stress extrusion during processing of the part is reduced.
Drawings
FIG. 1 is a schematic view of the structure of a clamp base of the present invention;
FIG. 2 is a cross-sectional view C-C of FIG. 1;
FIG. 3 is a D-D cross-sectional view of FIG. 1;
FIG. 4 is a schematic diagram of the structure of the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
FIG. 6 is a cross-sectional view B-B of FIG. 4;
FIG. 7 is a schematic view of a platen structure, wherein (a) is a front view of the platen; (b) a top view of the platen;
FIG. 8 is a schematic view of a support block; wherein (a) the support block is a front view; (b) a top view of the support block;
FIG. 9 is a schematic view of a second structure of the support block; wherein (a) the support block is two front views; (b) a second top view of the support block;
reference numerals illustrate: the fixture comprises a fixture base, a first 2-strip-shaped step, a first 3-threaded hole, a second 4-strip-shaped step, a second 5-threaded hole, a third 6-threaded hole, a 7-U-shaped groove, an 8-pressing plate, a 9-support stud, a first 10-stud, a first 11-nut, a second 12-nut, a first 13-support block, a first 14-screw, a second 15-screw, a second 16-support block, a third 17-screw, a fourth 18-screw, a 19-part and a 20-positioning ring.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment provides a combined positioning and supporting clamp for a cooling ring of a combustion chamber (see fig. 1-9), which comprises a circular clamp base 1, a pressing plate 8, a first supporting block 13 and a second supporting block 16; the middle part of the upper surface of the circular clamp base 1 is provided with a convex step positioning ring 20, the upper surface of the clamp base 1 on the inner side and the outer side of the step positioning ring 20 is uniformly provided with a plurality of first strip-shaped steps 2 and second strip-shaped steps 4 with the same number, and each group of the first strip-shaped steps 2 and the second strip-shaped steps 4 are coaxially arranged along the radial direction of the clamp base 1; the first step 2 is provided with two first threaded holes 3, and the second step 4 is provided with two second threaded holes 5; a U-shaped groove 7 and a threaded hole III 6 are arranged between two adjacent steps I2, and the U-shaped groove 7 and the threaded hole III 6 are uniformly distributed along the circumference.
The first supporting block 13 and the second supporting block 16 are respectively in a T shape, as shown in fig. 8 and 9, the transverse edge of the T shape is in an arc shape matched with the radian of the step positioning ring 20, the arc directions of the first supporting block 13 and the second supporting block 16 are opposite, the first supporting block 13 is pressed on the first bar-shaped step 2 and is attached to the outer wall of the step positioning ring 20, and the second supporting block 16 is pressed on the second bar-shaped step 4 and is attached to the positioning ring 20; the vertical edge of the first supporting block 13 is respectively provided with a waist-shaped groove, the waist-shaped groove is arranged opposite to the first threaded hole 3, and the first threaded hole 3 is respectively provided with a first screw 14 and a second screw 15; the first supporting block 13 is connected with the first step 2 through a first screw 14 and a second screw 15. The second supporting block 16 is of a fan-shaped structure, the vertical edges of the second supporting block 16 are respectively provided with a waist-shaped groove, the waist-shaped grooves are arranged opposite to the second threaded holes 5, and the second threaded holes 5 are respectively provided with a third screw 17 and a fourth screw 18; the second support block 16 is connected with the second step 4 through a third screw 17 and a fourth screw 18.
The pressing plate 8 is a Y-shaped hook-shaped pressing plate, as shown in fig. 7, the pressing plate 8 is arranged between two first supporting blocks 13 on the fixture base 1, and compresses the arc edges of the two first supporting blocks 13. The middle part is provided with waist type hole on clamp plate 8, and one side is provided with the round hole, and waist type hole and round hole cooperate respectively with screw hole three 6 and U type groove 7 and pass through support double-screw bolt 9 and double-screw bolt one 10 and be connected to realize the back-and-forth movement through U type groove 7, be provided with gland nut one 11 and nut two 12 on support double-screw bolt 9 and the double-screw bolt one 10, clamp plate 8 compresses tightly through gland nut one 11 and nut two 12.
The upper end surface of the step positioning ring 20 is the same as the upper end surface of the step I2, the upper end surface of the step II 4 is lower than the upper end surface of the step positioning ring 20, and the step I2 and the step II 4 are provided with a threaded hole I3 and a threaded hole II 5 which are coaxial and non-concentric.
The number of the strip-shaped steps I2 and the number of the strip-shaped steps II 4 are respectively 8.
The number of the first steps 2 is 8, the number of the first threaded holes 3 is 16, the number of the second steps 4 is 8, the number of the second threaded holes 5 is 16, the number of the third threaded holes 6 is 8, and the number of the U-shaped grooves 7 is 8.
The number of the pressing plates 8 is 8, the number of the studs 9 is 8, the number of the studs 10 is 8, the number of the supporting blocks 13 is 8, the number of the screws 14 is 8, and the number of the screws 15 is 8; the number of the second supporting blocks 16 is 8, the number of the third screws 17 is 8, and the number of the fourth screws 18 is 8.
The application method of the combined positioning and supporting clamp for the cooling ring of the combustion chamber comprises the following steps:
the first step: placing the clamp base 1 on a workbench of a numerical control vertical lathe, penetrating a connecting hole arranged on the clamp base 1 by using a screw, and fixing the clamp base 1 on the workbench;
and a second step of: when the part is installed, the part is horizontally placed on a clamp, the lower end face of the part is attached to the upper end face of a step-shaped positioning ring of the clamp, the position of a pressing plate 8 is adjusted, the pressing face of the pressing plate 8 is attached to the upper end face of the part, a first pressing nut 11 and a second pressing nut 12 are pressed, and the part is firmly pressed on a base 1 of the clamp;
and a third step of: and after the supporting position is adjusted, the screw I14 and the screw II 15 are pressed, and the supporting block I13 plays a supporting role on the appearance of the part.
Fourth step: and after the supporting position is adjusted, the third screw 17 and the fourth screw 18 are pressed, and the second supporting block 16 plays a supporting role on the inner hole of the part.
Fifth step: and (5) installing a cutter and processing parts.
Claims (10)
1. A be used for combustion chamber cooling ring combination location support anchor clamps which characterized in that: comprises a circular clamp base (1), a pressing plate (8), a first supporting block (13) and a second supporting block (16); the middle part of the upper surface of the circular clamp base (1) is provided with a convex positioning ring (20), the upper surface of the inner and outer clamp bases (1) of the positioning ring (20) is uniformly provided with a plurality of first strip-shaped steps (2) and second strip-shaped steps (4) with the same number, and each group of first strip-shaped steps (2) and second strip-shaped steps (4) are coaxially arranged along the radial direction of the clamp base (1);
the first supporting block (13) and the second supporting block (16) are respectively T-shaped, the transverse edge of the T-shape is arc-shaped matched with the radian of the positioning ring (20), the arc directions of the first supporting block (13) and the second supporting block (16) are opposite, the first supporting block (13) is pressed on the first strip-shaped step (2) and is attached to the outer wall of the positioning ring (20), and the second supporting block (16) is pressed on the second strip-shaped step (4) and is attached to the positioning ring (20);
the clamp is characterized in that the clamp plate (8) is a Y-shaped hook-shaped clamp, and the clamp plate (8) is arranged between two first supporting blocks (13) on the clamp base (1) and compresses the arc edges of the two first supporting blocks (13).
2. A combined positioning and supporting fixture for a cooling ring of a combustion chamber as set forth in claim 1, wherein: two first threaded holes (3) are formed in the first strip-shaped step (2); two threaded holes (5) are formed in the strip-shaped step II (4); a U-shaped groove (7) and a threaded hole III (6) are arranged on the clamp base (1) between the two strip-shaped steps I (2).
3. A combined positioning and supporting fixture for a cooling ring of a combustion chamber according to claim 1 or 2, characterized in that: the middle part is provided with waist type hole on clamp plate (8), and one side is provided with the round hole, waist type hole and round hole respectively with screw hole III (6) and U type groove (7) cooperation pass through support double-screw bolt (9) and double-screw bolt one (10) and be connected to realize back-and-forth movement through U type groove (7).
4. A combined positioning and supporting fixture for a cooling ring of a combustion chamber according to claim 3, wherein: the upper end surface of the positioning ring (20) is the same as the upper end surface of the first step (2), and the upper end surface of the second step (4) is lower than the upper end surface of the positioning ring (20).
5. The combined positioning and supporting fixture for the cooling ring of the combustion chamber according to claim 4, wherein: the vertical edges of the first supporting block (13) and the second supporting block (16) are respectively provided with a waist-shaped groove, and the waist-shaped grooves are arranged opposite to the first threaded hole (3) and the second threaded hole (5).
6. The combined positioning and supporting fixture for the cooling ring of the combustion chamber according to claim 5, wherein: the number of the strip-shaped steps I (2) and the number of the strip-shaped steps II (4) are respectively 8.
7. The combined positioning and supporting fixture for the cooling ring of the combustion chamber according to claim 6, wherein: the support stud (9) and the first stud (10) are provided with a first compression nut (11) and a second compression nut (12), and the pressing plate (8) is compressed through the first compression nut (11) and the second compression nut (12).
8. The combined positioning and supporting fixture for the cooling ring of the combustion chamber according to claim 7, wherein: screw one (14) and screw two (15) are respectively arranged in the threaded hole one (3).
9. The combined positioning and supporting fixture for the cooling ring of the combustion chamber according to claim 8, wherein: and a screw III (17) and a screw IV (18) are respectively arranged in the threaded hole II (5).
10. The method of using a combined positioning and supporting fixture for a cooling ring of a combustion chamber according to claim 1, wherein: the method comprises the following steps:
the first step: placing the clamp base (1) on a workbench of a numerical control vertical lathe, penetrating a connecting hole arranged on the clamp base (1) by a screw, and fixing the clamp base (1) on the workbench;
and a second step of: when the part (19) is installed, the part (19) is horizontally placed on the clamp, the lower end face of the part is attached to the upper end face of the clamp step-shaped positioning ring (20), the position of the pressing plate (8) is adjusted, the pressing face of the pressing plate (8) is attached to the upper end face of the part (19), the first nut (11) and the second nut (12) are pressed, and the part is firmly pressed on the clamp base (1);
and a third step of: adjusting the supporting position of the first supporting block (13), enabling the right-end arc supporting surface of the first supporting block (13) to be attached to the outer circle of the left end of the part by sliding the first supporting block (13) left and right, and pressing the first screw (14) and the second screw (15) after the supporting position is adjusted, wherein the first supporting block (13) plays a supporting role on the shape of the part;
fourth step: adjusting the supporting position of the second supporting block (16), enabling the arc supporting surface at the left end of the second supporting block (16) to be attached to the inner hole at the right end of the part by sliding the second supporting block (16) left and right, and pressing the third screw (17) and the fourth screw (18) after the supporting position is adjusted, wherein the second supporting block (16) plays a supporting role on the inner hole of the part;
fifth step: and (5) installing a cutter and processing parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311735725.0A CN117840784A (en) | 2023-12-18 | 2023-12-18 | Combined positioning and supporting clamp for cooling ring of combustion chamber and application method of combined positioning and supporting clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311735725.0A CN117840784A (en) | 2023-12-18 | 2023-12-18 | Combined positioning and supporting clamp for cooling ring of combustion chamber and application method of combined positioning and supporting clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117840784A true CN117840784A (en) | 2024-04-09 |
Family
ID=90531965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311735725.0A Pending CN117840784A (en) | 2023-12-18 | 2023-12-18 | Combined positioning and supporting clamp for cooling ring of combustion chamber and application method of combined positioning and supporting clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117840784A (en) |
-
2023
- 2023-12-18 CN CN202311735725.0A patent/CN117840784A/en active Pending
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