CN118128614A - Engine split type rectifying support casing process connecting device and method - Google Patents
Engine split type rectifying support casing process connecting device and method Download PDFInfo
- Publication number
- CN118128614A CN118128614A CN202410452800.0A CN202410452800A CN118128614A CN 118128614 A CN118128614 A CN 118128614A CN 202410452800 A CN202410452800 A CN 202410452800A CN 118128614 A CN118128614 A CN 118128614A
- Authority
- CN
- China
- Prior art keywords
- casing
- connecting plate
- face
- screw
- boss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 67
- 230000008569 process Effects 0.000 title claims abstract description 47
- 238000003825 pressing Methods 0.000 claims abstract description 33
- 238000003754 machining Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 abstract description 9
- 238000012545 processing Methods 0.000 description 11
- 238000010009 beating Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000009191 jumping Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000001612 separation test Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Landscapes
- Connection Of Plates (AREA)
Abstract
The invention discloses a process connecting device and a process connecting method for an engine split rectifying support casing, which mainly comprise a connecting plate, a positioning block and a pressing plate; the connecting plate is of an annular structure, the bottom surface is an axial plane reference, and the connecting plate is connected with a boss stud at the upper end of the inner casing through a screw; the connecting plate is provided with a plurality of positioning blocks, and the main function of the positioning blocks is to limit the angular and axial positions of the inner casing and the outer casing; the top of the positioning block is fixedly provided with a pressing plate, the pressing plate is mounted on the top of the positioning block through a first inner hexagon screw, and the lower end face of the mounting edge of the outer shell is tightly attached to the positioning face of the upper end face of the step of the positioning block; the pressing plate is provided with a pressing screw and a hexagonal thin screw for fixing the pressing plate. The rigid connection between the inside and the outside of the separation casing is realized, the precise positioning of the separation structure between the inside and the outside of the casing in the angle direction and the axial direction can be realized, the parallelism requirement of the inside and the outside separation casing can be met through the designed axial adjusting device, and the operation is precise and reliable.
Description
Technical Field
The invention belongs to the technical field of aeroengines, and particularly relates to an engine split rectifying support casing process connection device and method.
Background
The novel aeroengine rectifying support casing is a main bearing casing of an engine, mainly comprises a shell, an inner casing, seven double-layer hollow rectifying support plates, support plate switching sections, half support plates, support plate mounting edges and other small components, wherein the number of argon arc welding seams is up to 120, the inner casing main body of the rectifying support casing and the shell are of a split structure, the rectifying support casing is not fixedly connected, the concentricity, end face runout and hole position requirements associated with the inner casing and the outer casing are difficult to ensure in mechanical processing engineering, and large processing quality risks exist, so that the inner casing and the outer casing are required to be rigidly connected to form a whole before mechanical processing, and the inner casing and the outer casing can be cooperatively processed in the rectifying support casing.
However, the dual-cavity separating cases in the prior art are all subjected to split processing, and cannot be integrally and cooperatively processed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the process connecting device and the process connecting method for the split rectifying support casing of the engine, which can realize the rigid connection of the inside and the outside of the split casing, can realize the accurate positioning of the inside and the outside of the separation casing in the angle direction and the axial direction, can meet the requirement that the parallelism of the inside and the outside of the split casing is within 0.04mm through the designed axial adjusting device, can be clamped once and adjusted by one person, has accurate and reliable operation, realizes the cooperative processing of the high-precision position dimension of the inside and the outside of the split casing, and breaks through the technical problem that the double-cavity split casing cannot be integrally cooperated.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A process connecting device of an engine split type rectifying support casing comprises a connecting plate, a positioning block and a pressing plate;
The connecting plate is of an annular structure, the bottom surface of the connecting plate is used as an axial plane reference, and the connecting plate is connected with a boss stud at the upper end of the inner casing through a screw; a plurality of positioning blocks are arranged on the connecting plate and are used for limiting the angular and axial positions of the inner casing and the outer casing;
The top of the positioning block is fixedly provided with a pressing plate, the pressing plate is mounted on the top of the positioning block through a first inner hexagon screw, and the lower end face of the mounting edge of the outer shell is tightly attached to the positioning face of the upper end face of the step of the positioning block; and the pressing plate is provided with a pressing screw and a hexagonal thin screw for fixing the pressing plate.
Preferably, the parallelism of the upper end face of the connecting plate relative to the lower end face is not more than 0.04mm.
Preferably, the number of the thread bosses on the inner casing is 7, the 7 thread bosses are uniformly distributed on the inner casing in the circumferential direction, and the number of the positioning blocks is three and are respectively arranged on the thread bosses with the numbers of A-1, A-3 and A-6.
Further, a zero-position stud A-1 threaded boss on the inner casing is used as an angular positioning reference and an axial positioning reference.
Further, threaded bushings are arranged on threaded bosses with the numbers of A-4 and A-5 of the inner casing, the threaded bushings are arranged on the outer sides of the screws, and the threaded bushings are used for driving the connecting plates to move up and down and adjusting the parallelism of the connecting plates; the lower end face of the threaded bushing is contacted with the upper end face of the threaded boss of the inner casing; the threaded bushing is connected with a small round nut, and the bottom surface of the small round nut is tightly attached to the top surface of the connecting plate.
Further, the diameter of the threaded bushing is larger than that of the stud boss of the inner casing.
Preferably, the positioning block is fixed on the connecting plate through a second socket head cap screw.
An engine split type rectifying support casing process connection method based on any one of the above-mentioned engine split type rectifying support casing process connection device comprises the following processes,
Connecting the connecting plate with the inner casing through a screw, and adjusting the parallelism of the connecting plate by taking the zero stud boss as an angular and axial reference;
loading the positioning block into a preset position on the connecting plate and fixing the positioning block;
And assembling the outer shell and the axial supporting positioning block, so that the lower end surface of the mounting edge of the outer shell is tightly attached to the positioning surface of the upper end surface of the step of the positioning block, and the outer shell is connected with the first inner hexagon screw through a pressing plate, a pressing screw, a hexagonal thin nut and the first inner hexagon screw, thereby finishing the final inner and outer rigid connection of the rectifying supporting casing.
Further, the threaded bushing on the threaded boss with the inner casing number of A-4 or A-5 is rotated to adjust the connecting plate up and down and count the jump of the upper end surface of the connecting plate relative to the zero position, so that the parallelism of 0.04mm is met;
When the axial height of one of the machine case thread bosses is lower than the reference thread boss of the zero position, the thread bushing close to the machine case thread boss is rotated downwards to be in contact with the machine case thread boss, the connecting plate is moved upwards, the parallelism is guaranteed to be 0.04mm, and the screw is screwed down;
When the axial height of the threaded boss of the casing is higher than the zero position, the threaded bushing which is close to the threaded boss of the casing is rotated upwards to be in contact with the threaded boss of the casing, the connecting plate is moved downwards, at the moment, the threaded boss of the casing is partially embedded into the connecting plate, the parallelism is guaranteed to be 0.04mm by striking a surface, the screw is screwed, and the first rigid connection between the connecting plate and the casing is completed.
Further, after the final integral rigid connection of the rectifying support casing is completed, the machine tool is used for performing surface-beating and retesting on whether the parallelism of the upper end face of the connecting plate is within 0.04mm, the distance H from the upper end face of the connecting plate to the lower end face of the mounting edge of the outer casing is measured indirectly, the distance H from the upper end face of the machine tool surface-beating connecting plate to the upper end face of the mounting edge is measured indirectly, and after the process connecting ring, the inner casing and the outer casing are assembled in place, collaborative machining of all sizes and positions of the later stage of the casing is performed.
Compared with the prior art, the invention has the following beneficial technical effects:
The invention provides a process connecting device for an engine split type rectifying support casing, which completes the rigid connection of an inner casing and an outer casing through an inner rigid connecting device and a outer rigid connecting device and a proposed alignment connecting method, realizes the high-precision position dimension of the inner casing and the outer casing, greatly improves the utilization rate of a processing center, reduces the labor cost, improves the qualification rate of the rectifying support casing of a Momo engine, and breaks through the technical problem that a double-cavity separating casing cannot be integrally processed.
The invention breaks through the previous single and rough connection mode, can be clamped once, adjusted by one person, does not need to be matched with a plurality of persons for operation, is flexibly disassembled and assembled at any time, has more accurate and reliable operation, is simple, convenient and quick, greatly reduces the labor intensity, is also a great improvement in the aspect of production efficiency, can reduce the accumulation of all relevant working procedures to within 9 days, improves the production efficiency by more than 95 percent, realizes the accurate and rigid connection of the separation test rectification support casing of the aeroengine, satisfies the high-precision position and size cooperative processing of the inner casing and the outer casing, and breaks through the technical problem that the double-cavity separation casing cannot be integrally processed.
Drawings
FIG. 1 is a schematic view of a split rectifying support case connection boss;
FIG. 2 is a schematic diagram of an assembly of a split fairing support case attachment tool;
FIG. 3 is a partial schematic view of a split rectifying support case coupling device;
FIG. 4 is a partial schematic view of a split fairing support case coupler adjustment apparatus.
In the accompanying drawings: 1 is a connecting plate; 2 is a positioning block; 3 is a pressing plate; 4 is a screw; 5 is a threaded bushing; 6 is a compression screw; 7 is a hexagonal thin screw; 8 is a first socket head cap screw; 9 is a small round nut; and 10 is a second socket head cap screw.
Detailed Description
The invention will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the invention.
The invention provides a device for rigidly connecting an engine separation type rectifying support casing and an operation method thereof, which realize the rigid connection of the inside and the outside of a separation casing.
As shown in fig. 1 to 4, the process connection device for the split rectifying support casing of the engine comprises a connection plate 1, a positioning block 2, a pressing plate 3, a screw 4, a threaded bushing 5, a pressing screw 6, a hexagonal thin screw 7, a first inner hexagon screw 8, a small round nut 9 and a second inner hexagon screw 10.
The connecting plate 1 is a part which is convenient for internal and external connection, clamping and alignment according to a separating casing mechanism, for a rectifying supporting casing, stud bosses at the front wall plate of the internal casing and the mounting edge of an outer casing are selected as internal and external connection points, the connecting plate 1 designed in a clamp is the basis of the connecting clamp, the bottom surface of the connecting plate 1 is used as an axial plane reference and is a detection reference for whether the internal and external separating casings are axially assembled in place, a screw 4 connected with the stud of the boss of the internal casing is designed on the connecting plate 1, in addition, a threaded bushing is additionally arranged according to the size of the casing, the rectifying casing can be provided with two threaded bushings for driving the connecting plate 1 to move up and down to adjust the parallelism of the connecting plate 1, in addition, an axial limiting positioning block is designed for fixing the connecting plate 1 and the outer casing, and finally the separated outer casing is fixedly pressed by a pressing device, so that the integral rigid connection of the internal and external separating casings is realized.
The device uses zero stud boss as an angular reference and an axial reference to be connected with a bottom plate and an inner casing through screws, the upper surface of a marking connecting plate 1 is jumping relative to the zero position, the ideal state is that the heights of studs are completely consistent, at the moment, the bottom surface of the connecting plate 1 and two thread bushings at two positions of the connecting plate 1 are completely attached to the upper end surface of the casing stud boss, the thread bushings do not need to be adjusted, the jumping of the upper end surface of the connecting plate 1 relative to the reference is self parallelism, the requirement is met, but the stud boss is subjected to normal welding deformation after two times of welding, the probability of the heights of each boss being completely consistent is almost zero, and therefore the thread bushings are required to be rotated to adjust the connecting plate 1 up and down and mark the jumping of the upper end surface of the measuring connecting plate 1 relative to the zero position, so that the required parallelism is met.
When the axial supporting and positioning block 2 is assembled, the process connecting ring connecting plate 1 and the positioning block are cleaned, the positioning block is firstly arranged in the connecting plate 1, and the positioning block is fixed on the connecting plate 1 by using a second inner hexagon screw, and the process is notable in that the process is required to be tightly screwed, and the parallelism of the positioning block relative to the connecting plate 1 is measured by an operable method such as a height gauge or a dial gauge so as to ensure that the supporting and positioning block is arranged at a theoretical position.
And assembling the outer shell B and the axial supporting positioning block, so that the lower end surface of the mounting edge of the outer shell is tightly attached to the positioning surface of the upper end surface of the step of the positioning block, and the outer shell B can be checked by using a feeler gauge and is connected through a pressing device, thereby finishing the final internal and external rigid connection of the rectifying supporting casing.
Rechecking whether all connection related components of the whole casing are in place or not: after the final integral rigid connection of the rectifying support casing is completed, the machine tool performs surface striking and retesting whether the parallelism of the upper end face of the connecting plate 1 is within a required range and the distance from the upper end face of the connecting plate 1 to the lower end face of the mounting edge of the outer casing, so that the cooperative machining of all relevant sizes and positions of the later casing is performed after the process connecting ring, the inner casing and the outer casing are assembled in place.
The invention breaks through the previous single and rough connection mode, can be clamped once, adjusted by one person, does not need to be matched with a plurality of persons for operation, is flexibly disassembled and assembled at any time, has more accurate and reliable operation, is simple, convenient and quick, greatly reduces the labor intensity, is also a great improvement in the aspect of production efficiency, can reduce the accumulation of all relevant working procedures to within 9 days, improves the production efficiency by more than 95 percent, realizes the accurate and rigid connection of the separation test rectification support casing of the aeroengine, satisfies the high-precision position and size cooperative processing of the inner casing and the outer casing, and breaks through the technical problem that the double-cavity separation casing cannot be integrally processed.
Examples
A process connection method for an engine split rectifying support casing comprises the following steps,
Step 1, designing and manufacturing an auxiliary positioning connection clamp: the connecting plate 1 designed in the fixture is the basis of the connecting fixture, the bottom surface of the connecting plate is used as an axial plane reference and is the detection basis for whether the axial horizontal position of the inner and outer separating casings is assembled in place, the connecting plate is designed with the screw 4 connected with the boss stud at 5 positions of the inner casing, so that the inner casing A is fixedly connected, the boss studs A-1, A-3 and A-6 of the inner casing are designed with the axial limiting positioning block 2 for assembling and limiting the outer casing B, in addition, the boss of the zero position stud A-1 of the casing is used as an angular positioning and axial positioning reference, two threaded bushings 5 are additionally arranged at the positions A-4 and A-5 for driving the connecting plate 1 to move up and down to adjust the parallelism of the connecting plate, and the first inner hexagon screw 8, the small round nut 9 and the pressing screw 6 are designed according to the size mechanism characteristics of the installation edge of the outer casing B, so that the installation edge of the separated outer casing B is fixedly pressed, and the integral rigid connection of the inner and outer separating casings is realized.
And 2, assembling a process connecting ring connecting plate, namely cleaning up the 7-position threaded boss of the inner casing A and the process connecting clamp connecting plate 1, connecting the bottom plate 1 and the threaded bosses A-1, A-3, A-4, A-5 and A-6 at the inner casing 5 by using the zero stud boss as an angular and axial reference by using the screw 4, wherein the screw 4 cannot be screwed too tightly in the process, only pre-tightening is performed, and otherwise, the axial position of the connecting plate 1 cannot be adjusted to ensure the required parallelism of 0.04mm.
Step 3, beating the jump of the upper surface of the meter connecting plate relative to the zero position, the ideal state is that the heights of 5 studs are completely consistent, at the moment, the bottom surface of the connecting plate 1 and the two threaded bushes at the connecting plate are completely attached to the upper end surface of the 5 stud boss of the machine case A, the threaded bushes at the A-4 and A-5 positions do not need to be regulated, the jump of the upper end surface of the connecting plate relative to the A reference is self-parallelism, the requirement of 0.04mm is met, but the stud boss is welded on the inner machine case twice (firstly, the stud is welded on a front wallboard, then the front wallboard assembly is welded on the inner machine case for the second time), normal welding deformation exists, the probability of completely consistent heights of each boss is almost zero, for this reason, the threaded bushes 5 at the boss A-4 or A-5 are required to be rotated to regulate the connecting plate up and down and beating the meter the jump of the upper end surface of the connecting plate relative to the zero position, the parallelism degree is 0.04mm, if the axial height of one of the case thread bosses is lower than the reference thread boss of the zero position, the A-4 or A-5 thread bush 5 close to the position is rotated downwards to be contacted with the case thread boss, the connecting plate is moved upwards, the parallelism degree is ensured to be 0.04mm, the screw 4 is screwed down, otherwise, if the axial height of the case thread boss is higher than the zero position, the A-4 or A-5 thread bush 5 close to the position is rotated upwards to be contacted with the case thread boss, the connecting plate is moved downwards, at the moment, the case thread boss part is required to be embedded into the connecting plate, the diameter phi D of the thread bush 5 is larger than the diameter phi D of the case stud boss during design, otherwise, interference cannot lead the connecting plate to be moved downwards, the parallelism degree is ensured to be 0.04mm, the screw 4 is screwed down, the first rigid connection between the connecting plate and the case is completed, the lower end surface of the threaded bush 5 is always in contact with the upper end surface of the threaded boss of the casing no matter the upper adjustment or the lower adjustment is carried out, and the threaded bush 5 must be flexibly rotated.
Step 4, assembling an axial supporting and positioning block: the process connecting ring connecting plate 1 and the positioning block2 are cleaned, the positioning block2 is firstly arranged in the positions of the connecting plates 1-1, 1-3 and 1-6, the positioning block2 is fixed on the connecting plate 1 by using a second inner hexagon screw 10 (4 pieces at each position), the process connecting ring connecting plate is worth noting that the process connecting ring connecting plate is required to be screwed tightly, and the parallelism of the dimension h and the positioning block relative to the connecting plate is measured through an operable method such as a height gauge or a marking gauge so as to ensure that the supporting positioning block2 is arranged at a theoretical position.
Step 5, assembling and positioning an outer shell: the outer shell B is assembled with the axial supporting positioning block 2, the lower end face of the installation edge of the outer shell B is tightly attached to the positioning face of the upper end face of the step of the positioning block, the outer shell B can be checked by using a feeler gauge, and the outer shell B is connected with the first inner hexagon screw 8 through the pressing plate 3, the pressing screw 6 and the hexagonal thin nut 7, so that the final inner and outer rigid connection of the rectifying supporting casing is completed.
Step 6, rechecking whether all the connection related components of the whole casing are in place or not: after the final integral rigid connection of the rectifying support casing is completed, the machine tool performs surface beating and retesting on whether the parallelism of the upper end face of the connecting plate 1 is within 0.04mm, and the distance H from the upper end face of the connecting plate to the lower end face of the mounting edge of the outer casing is measured, wherein the distance H from the upper end face of the surface beating connecting plate to the upper end face of the mounting edge of the machine tool can be indirectly measured, so that the cooperative machining of all relevant dimensions and position degrees in the later stage of the casing is performed after the process connecting ring 1, the inner casing A and the outer casing B are assembled in place.
The novel aeroengine rectifying support casing is a main bearing casing of an engine, mainly comprises a shell, an inner casing, seven double-layer hollow rectifying support plates, a support plate switching section, a half support plate, support plate mounting edges and other small components, wherein the number of argon arc welding seams is up to 120, the inner casing main body of the rectifying support casing and the shell are of a split structure, no fixed connection exists, the concentricity, end face runout and hole position requirements associated with the inner casing and the outer casing are difficult to ensure in mechanical processing engineering, and a large processing quality risk exists, so that the inner casing and the outer casing are required to be rigidly connected to form a whole before mechanical processing, the inner casing and the outer casing can be cooperatively processed by the rectifying support casing, a process connecting device is used at present, the axial driving device is designed according to the structural size of a clamp and a workpiece, the parallelism of the connecting plate is adjusted, the height size and the like, and the whole rigid connection of the separating casing is realized, and the cooperative processing is completed. The method comprises the following steps: (1) designing and manufacturing auxiliary positioning connection clamp: the connecting plate 1 designed in the fixture is the basis of the connecting fixture, the bottom surface of the connecting plate is used as an axial plane reference and is the detection basis for whether the axial horizontal position of the inner and outer separating casings is assembled in place, the connecting plate is designed with the screw 4 connected with the boss stud at 5 positions of the inner casing, so that the inner casing A is fixedly connected, the boss studs A-1, A-3 and A-6 of the inner casing are designed with the axial limiting positioning block 2 for assembling and limiting the outer casing B, in addition, the boss of the zero position stud A-1 of the casing is used as an angular positioning and axial positioning reference, two threaded bushings 5 are additionally arranged at the positions A-4 and A-5 for driving the connecting plate 1 to move up and down to adjust the parallelism of the connecting plate, and the first inner hexagon screw 8, the small round nut 9 and the pressing screw 6 are designed according to the size mechanism characteristics of the installation edge of the outer casing B, so that the installation edge of the separated outer casing B is fixedly pressed, and the integral rigid connection of the inner and outer separating casings is realized.
(2) The process connection ring connection plate is assembled, namely a 7-position threaded boss of an inner casing A and a process connection clamp connection plate 1 are cleaned, a zero stud boss is used as an angular and axial reference, a screw 4 is used for connecting a bottom plate 1 and the threaded bosses A-1, A-3, A-4, A-5 and A-6 (only positions are shown in fig. 1 and boss specific structures are not shown) at the inner casing 5, the screw 4 cannot be screwed too tightly in the process, only pre-compression is carried out, and otherwise, the axial position of the connection plate 1 cannot be adjusted to ensure the required parallelism of 0.04mm.
(3) The jump of the upper surface of the meter-striking connecting plate relative to the zero position is that the heights of studs at 5 positions are completely consistent, at the moment, the bottom surface of the connecting plate 1 and the threaded bushes at two positions of the connecting plate are completely attached to the upper end surface of a stud boss at 5 positions of a casing A, the threaded bushes at A-4 and A-5 positions do not need to be regulated, the jump of the upper end surface of the connecting plate relative to the A reference is self-parallelism, the requirement of 0.04mm is met, but the stud boss is welded on the inner casing twice (firstly, the stud is welded on a front wall plate, then the front wall plate assembly is welded on the inner casing for the second time), normal welding deformation exists, the probability of the complete consistency of the heights of each boss is almost zero, therefore, the threaded bushes 5 at the positions of the bosses A-4 or A-5 need to be rotated to regulate the connecting plate up and down and meter the jump of the upper end surface of the connecting plate relative to the zero position, the parallelism degree is 0.04mm, if the axial height of one of the case thread bosses is lower than the reference thread boss of the zero position, the A-4 or A-5 thread bush 5 close to the position is rotated downwards to be contacted with the case thread boss, the connecting plate is moved upwards, the parallelism degree is ensured to be 0.04mm, the screw 4 is screwed down, otherwise, if the axial height of the case thread boss is higher than the zero position, the A-4 or A-5 thread bush 5 close to the position is rotated upwards to be contacted with the case thread boss, the connecting plate is moved downwards, at the moment, the case thread boss part is required to be embedded into the connecting plate, the diameter phi D of the thread bush 5 is larger than the diameter phi D of the case stud boss during design, otherwise, interference cannot lead the connecting plate to be moved downwards, the parallelism degree is ensured to be 0.04mm, the screw 4 is screwed down, the first rigid connection between the connecting plate and the case is completed, the lower end surface of the threaded bush 5 is always in contact with the upper end surface of the threaded boss of the casing no matter the upper adjustment or the lower adjustment is carried out, and the threaded bush 5 must be flexibly rotated.
(4) Assembling an axial supporting and positioning block: the process connecting ring connecting plate 1 and the positioning block 2 are cleaned, the positioning block 2 is firstly arranged in the positions of the connecting plates 1-1, 1-3 and 1-6, the positioning block 2 is fixed on the connecting plate 1 by using a second inner hexagon screw 10 (4 pieces at each position), the process connecting ring connecting plate is worth noting that the process connecting ring connecting plate is required to be screwed tightly, and the parallelism of the dimension h and the positioning block relative to the connecting plate is measured through an operable method such as a height gauge or a marking gauge so as to ensure that the supporting positioning block 2 is arranged at a theoretical position.
(5) Assembling and positioning an outer shell: the outer shell B is assembled with the axial supporting positioning block 2, the lower end face of the installation edge of the outer shell B is tightly attached to the positioning face of the upper end face of the step of the positioning block, the outer shell B can be checked by using a feeler gauge, and the outer shell B is connected with the first inner hexagon screw 8 through the pressing plate 3, the pressing screw 6 and the hexagonal thin nut 7, so that the final inner and outer rigid connection of the rectifying supporting casing is completed.
(6) Rechecking whether all connection related components of the whole casing are in place or not: after the final integral rigid connection of the rectifying support casing is completed, the machine tool performs surface beating and retesting on whether the parallelism of the upper end face of the connecting plate 1 is within 0.04mm, and the distance H from the upper end face of the connecting plate to the lower end face of the mounting edge of the outer casing is measured, wherein the distance H from the upper end face of the surface beating connecting plate to the upper end face of the mounting edge of the machine tool can be indirectly measured, so that the cooperative machining of all relevant dimensions and position degrees in the later stage of the casing is performed after the process connecting ring 1, the inner casing A and the outer casing B are assembled in place. The method breaks through the previous single and rough connection mode, can be used for once clamping and one person for adjustment, does not need to be matched with a plurality of persons for operation, is flexibly disassembled and assembled at any time, is more accurate and reliable in operation, is simple, convenient and quick, greatly reduces the labor intensity, is also greatly improved in terms of production efficiency, can reduce the accumulation of all relevant working procedures to 9 days, improves the production efficiency by more than 95%, realizes the accurate and rigid connection of the aeroengine separation test rectification support casing, meets the high-precision position and size cooperative machining of the inner casing and the outer casing, and breaks through the technical problem that the double-cavity separation casing cannot be integrally machined.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art. The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. The process connecting device of the split rectifying support casing of the engine is characterized by comprising a connecting plate (1), a positioning block (2) and a pressing plate (3);
The connecting plate (1) is of an annular structure, the bottom surface of the connecting plate (1) is used as an axial plane reference, and the connecting plate (1) is connected with a boss stud at the upper end of the inner casing through a screw (4); a plurality of positioning blocks (2) are arranged on the connecting plate (1), and the positioning blocks (2) are used for limiting the angular and axial positions of the inner casing and the outer casing;
The top of the positioning block (2) is fixedly provided with a pressing plate (3), the pressing plate (3) is mounted on the top of the positioning block (2) through a first inner hexagon screw (8), and the lower end face of the mounting edge of the outer shell is tightly attached to the positioning face of the step upper end face of the positioning block (2); the pressing plate (3) is provided with a pressing screw (6) and a hexagonal thin screw (7) for fixing the pressing plate (3).
2. The engine split rectifying support casing process connection device according to claim 1, characterized in that the parallelism of the upper end face of the connection plate (1) relative to the lower end face is not more than 0.04mm.
3. The process connection device for the split rectifying and supporting casing of the engine, according to claim 1, is characterized in that the number of the threaded bosses on the inner casing is 7, the 7 threaded bosses are uniformly circumferentially distributed on the inner casing, and the number of the positioning blocks (2) is three and are respectively arranged on the threaded bosses with the numbers of A-1, A-3 and A-6.
4. A split rectifying support casing process connection device for an engine according to claim 3, wherein zero position stud a-1 threaded boss on the inner casing is used as an angular positioning and axial positioning reference.
5. The process connection device for the split rectifying and supporting casing of the engine according to claim 3 is characterized in that threaded bushes (5) are arranged on threaded bosses with the inner casing numbers of A-4 and A-5, the threaded bushes (5) are arranged on the outer sides of screws (4), and the threaded bushes (5) are used for driving a connecting plate (1) to move up and down and adjusting the parallelism of the connecting plate (1); the lower end face of the threaded bushing (5) is contacted with the upper end face of the threaded boss of the inner casing; the threaded bushing (5) is connected with a small round nut (9), and the bottom surface of the small round nut (9) is tightly attached to the top surface of the connecting plate (1).
6. The engine split rectifying support casing process connection device according to claim 5, characterized in that the diameter of the threaded bushing (5) is larger than the diameter of the inner casing stud boss.
7. The process connection device for the split rectifying support casing of the engine according to claim 1, wherein the positioning block (2) is fixed on the connecting plate (1) through a second socket head cap screw (10).
8. An engine split rectifying support casing process connection method is characterized in that the engine split rectifying support casing process connection device based on any one of claims 1 to 7 comprises the following processes,
Connecting the connecting plate (1) with the inner casing through a screw (4), and adjusting the parallelism of the connecting plate (1) by taking a zero stud boss as an angular and axial reference;
Loading the positioning block (2) into a preset position on the connecting plate (1) and fixing the positioning block;
The outer shell is assembled with the axial supporting positioning block (2), so that the lower end face of the mounting edge of the outer shell is tightly attached to the positioning face of the upper end face of the step of the positioning block, and the outer shell is connected with the first inner hexagon screw (8) through the pressing plate (3), the pressing screw (6), the hexagonal thin nut (7) and the first inner hexagon screw, and the final inner and outer rigid connection of the rectifying supporting casing is completed.
9. The process connection method for the split rectifying and supporting casing of the engine, according to claim 8, is characterized in that a threaded bushing (5) on a threaded boss with the internal casing number of A-4 or A-5 is rotated to adjust the connecting plate up and down and meter the jump of the upper end face of the connecting plate (1) relative to the zero position so as to enable the jump to meet the parallelism of 0.04 mm;
When the axial height of one of the machine case thread bosses is lower than the reference thread boss of the zero position, the thread bushing (5) close to the machine case thread boss is rotated downwards to be in contact with the machine case thread boss, the connecting plate (1) moves upwards, the parallelism is guaranteed to be 0.04mm, and the screw (4) is screwed;
When the axial height of the casing screw boss is higher than the zero position, the screw bush (5) which is close to the position is rotated upwards to be in contact with the casing screw boss, the connecting plate (1) moves downwards, at the moment, the casing screw boss is partially embedded into the connecting plate (1), the parallelism is guaranteed to be 0.04mm, and the screw (4) is screwed, so that the first rigid connection between the connecting plate and the casing is completed.
10. The process connection method for the split type rectifying and supporting casing of the engine according to claim 8 is characterized in that after the final integral rigid connection of the rectifying and supporting casing is completed, a machine tool is used for metering and retesting whether the parallelism of the upper end face of the connecting plate (1) is within 0.04mm, the distance H from the upper end face of the connecting plate to the lower end face of the mounting edge of the outer casing is measured, the distance H from the upper end face of the machine tool metering connecting plate to the upper end face of the mounting edge is measured indirectly, and after the process connecting ring (1) and the inner casing and the outer casing are assembled in place, collaborative machining of all sizes and positions of the later stage of the casing is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410452800.0A CN118128614A (en) | 2024-04-16 | 2024-04-16 | Engine split type rectifying support casing process connecting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410452800.0A CN118128614A (en) | 2024-04-16 | 2024-04-16 | Engine split type rectifying support casing process connecting device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118128614A true CN118128614A (en) | 2024-06-04 |
Family
ID=91235754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410452800.0A Pending CN118128614A (en) | 2024-04-16 | 2024-04-16 | Engine split type rectifying support casing process connecting device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118128614A (en) |
-
2024
- 2024-04-16 CN CN202410452800.0A patent/CN118128614A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202922287U (en) | Anti-deformation tooling for processing special-shaped thin-walled sleeve | |
| CN113681183B (en) | Special fixture for welding multi-weld-seam leaf-ring parts and welding deformation control method | |
| CN208663512U (en) | A kind of special fixture of abrasive flows four-way interface macropore inner wall polishing | |
| CN112719372A (en) | Milling tool for cambered surface thin-wall case part | |
| CN109483072B (en) | Welding method and tool for shield machine spiral machine seat | |
| CN208575540U (en) | A kind of device having both axial fast precise, radial direction centering and clamping function | |
| CN112355579B (en) | Machining method of rotary case | |
| CN118128614A (en) | Engine split type rectifying support casing process connecting device and method | |
| CN109396816B (en) | Auxiliary tool and method for axially assembling and disassembling precise parts of turbine type main machine | |
| CN109909694B (en) | Method for processing flange sealing surface of end part of multi-section tower type container by using boring mill | |
| CN113941877B (en) | Positioning and supporting device of cylinder cover for boring machine processing and clamping and adjusting method | |
| CN215699890U (en) | Machining clamp for thin-walled workpiece | |
| CN114871749A (en) | Eccentric centering adjustment tool and adjustment method for self-aligning roller bearing | |
| CN211028418U (en) | Rapid positioning clamp for hollow shaft gear shaping | |
| CN111331298A (en) | Combined machining process equipment for large-size thin-wall welding part in aircraft engine | |
| CN202317315U (en) | Press machine connecting rod thread machining tool | |
| CN220893325U (en) | Concentricity detection device applied to lens processing | |
| CN109926858A (en) | Rope climbing block processing tool | |
| CN110315276A (en) | A kind of weak rigid casing repair method of aviation | |
| CN220753392U (en) | Electrostatic chuck clamping jig with adjustable flatness | |
| CN212330156U (en) | Combined machining process equipment for large-size thin-wall welding part in aircraft engine | |
| CN211465453U (en) | Positioning fixture for mechanical processing of pulping machine shell | |
| CN219521294U (en) | Motor casing processing frock | |
| CN220127613U (en) | Eccentric workpiece turning tool | |
| CN208458608U (en) | A kind of automobile differential shell master subtracts gear mounting surface pulsation measurement tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |