CN109129267B - Tool for assembling annular hoops and working method thereof - Google Patents
Tool for assembling annular hoops and working method thereof Download PDFInfo
- Publication number
- CN109129267B CN109129267B CN201811192378.0A CN201811192378A CN109129267B CN 109129267 B CN109129267 B CN 109129267B CN 201811192378 A CN201811192378 A CN 201811192378A CN 109129267 B CN109129267 B CN 109129267B
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- Prior art keywords
- diffuser
- assembly
- annular
- axial positioning
- heat
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000004321 preservation Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 description 10
- 238000009413 insulation Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000004323 axial length Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 238000011007 installation qualification Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/005—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by expanding or crimping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
Abstract
The invention relates to a tool for assembling an annular hoop and a working method thereof, wherein the tool for assembling the annular hoop comprises a mounting base, a diffuser axial positioning assembly, a central positioning block and a heat-insulating supporting disc, the central positioning block is fixedly arranged at the center of the mounting base, the diffuser axial positioning assembly comprises an axial positioning ring, an inner ring table is arranged at the front end of the axial positioning ring, a central jack in plug-in fit with the central positioning block is arranged at the center of the heat-insulating supporting disc, a clamping edge of the diffuser assembly after cold shrinkage is fixed in the inner ring table of the axial positioning ring during use, the central positioning block penetrates through a central shaft hole of the diffuser assembly, the heat-insulating supporting disc supports the annular hoop after thermal expansion, the central jack of the heat-insulating supporting disc is aligned with the central positioning block, the annular hoop in a heated expansion state is sleeved into an interference clamping part of the diffuser assembly in a cooling shrinkage state, and the annular hoop and the diffuser assembly are restored to normal temperature.
Description
Technical Field
The invention relates to the technical field of diffuser assemblies and annular band assembly equipment, in particular to a tool for annular band assembly and a working method thereof.
Background
The diffuser assembly 1 of a certain type of compressor needs to be assembled with the annular hoop 2 in an interference manner, wherein the diffuser assembly 1 is shown in fig. 1 and comprises an annular main body, the front end of the annular main body is provided with an annular interference clamping part 11 which is in large interference fit with the annular hoop 2, the tail end of the annular main body is provided with a clamping edge 12, the upper edge of the clamping edge 12 is provided with a plurality of axial through holes 14, the outer wall of the annular main body is welded and fixed with a plurality of blades 15 along the circumferential direction, the center of the annular main body is provided with a through central shaft hole 13, the structure of the annular hoop 2 is shown in fig. 2, the prior art adopts the principle of expansion and contraction for interference assembly, the annular hoop 2 needs to be placed in a heating furnace during assembly, the temperature is raised to 250 ℃, the combined diffuser welding assembly 1 is placed in a refrigerator, the temperature is-80 ℃, the temperature is kept, then the annular hoop 2 is rapidly taken out of the furnace and the refrigerator, the annular hoop 2 is rapidly assembled by a special assembly tool, then the annular hoop 2 is gradually cooled to the room temperature by bending 6 lugs 21 of the annular hoop 2.
Because the combined diffuser welding assembly and the annular strap are in large excess fit, the time required for taking the combined diffuser welding assembly and the annular strap out of the heating furnace and the refrigerator to be assembled in place during assembly is extremely short, the annular strap is clamped on the combined diffuser welding assembly due to slight carelessness or slow middle action, and the combined diffuser welding assembly cannot be installed in place, so that the installation qualification rate is low. Meanwhile, due to the limitation of the diffuser assembly structure, the axial length of the diffuser assembly is required during assembly, the existing tool cannot meet the requirement, and the assembly position of the annular strap is deviated.
Disclosure of Invention
The invention aims to solve the technical problem of providing a tool for assembling an annular strap, which is simple in structure and easy to assemble, and a working method thereof.
In order to solve the technical problems, the tool for assembling the annular hoops comprises a mounting base, a diffuser axial positioning assembly, a cylindrical center positioning block and a heat preservation supporting disc for supporting the annular hoops, wherein the center positioning block is fixedly arranged at the center of the mounting base, the diffuser axial positioning assembly comprises an axial positioning ring, the front end of the axial positioning ring is provided with an inner annular table matched with the clamping edge of the diffuser assembly, the center of the heat preservation supporting disc is provided with a center jack matched with the center positioning block in a plugging manner, the clamping edge of the diffuser assembly after cold shrinkage is fixed in the inner annular table of the axial positioning ring in use, the axial positioning ring is fixedly connected with the mounting base, the center positioning block penetrates through a center shaft hole of the diffuser assembly, the heat preservation supporting disc supports the annular hoops after hot expansion, the center jack of the heat preservation supporting disc is aligned with the center positioning block, the annular hoops in a heated expansion state are sleeved into an interference clamping part of the diffuser assembly in a cooling shrinkage state, and the annular hoops are restored to normal temperature.
Further, the heat preservation supporting plate is a graphite plate, heat preservation performance is good, and heat compensation can be conducted on the annular hoops sleeved outside the heat preservation supporting plate, so that the heating expansion time of the annular hoops is prolonged.
Further, the bottom outer wall of the heat preservation supporting disk is provided with a supporting ring table along the circumferential protrusion, the supporting ring table is tightly matched with the annular hoop, so that the heat preservation supporting disk is in line contact with the annular hoop when being inserted into the annular hoop, and the annular hoop is supported.
Further, the external diameter of support ring platform is not less than the internal diameter of diffuser subassembly interference joint portion for carry out the axial spacing by interference joint portion to the heat preservation supporting disk when heat preservation supporting disk and diffuser axial positioning subassembly are assembled, ensure assembly accuracy.
Further, the diffuser axial positioning assembly further comprises a plurality of axial positioning pins, axial positioning holes matched with the axial positioning pins are formed in the inner annular table, the end portions of the axial positioning pins are inserted into the axial positioning holes so that the axial positioning pins are fixedly arranged on the axial positioning rings, and lugs of the annular hoops are matched with the axial positioning pins during assembly to adjust the angular positions of the annular hoops.
Further, the diffuser axial positioning assembly further comprises a plurality of radial inserting blocks, and a plurality of radial inserting grooves matched with the radial inserting blocks are formed in the edge of the axial positioning ring along the radial direction, so that after the axial positioning ring is clamped in the clamping edge of the diffuser assembly, the radial inserting blocks are inserted into the radial inserting grooves and then extend to the upper side of the clamping edge, and the diffuser assembly is fixed.
Further, the installation base is disc-shaped, and the front end edge of the installation base is provided with a limiting ring table matched with the axial positioning ring, so that the axial positioning ring can be clamped in the limiting ring table.
Further, a circular inner groove matched with the central positioning block is formed in the center of the mounting base, so that the tail end of the central positioning block can be inserted into the inner groove, and positioning is facilitated when the central mounting block is assembled.
Further, the handle is fixedly arranged on the heat-preserving support disc, so that the heat-preserving support disc can be conveniently rotated to be separated from the annular hoop.
The working method of the tool for assembling the annular hoops comprises the following steps:
A. and the center positioning block is fixedly arranged at the center of the mounting base.
B. The axial locating pin is arranged in the axial locating ring, the central locating block is inserted into the central shaft hole of the diffuser assembly, so that the axial locating ring is clamped into the limiting ring table of the mounting base, the clamping edge of the diffuser assembly is clamped into the inner ring table of the axial locating ring, and the radial insert block is inserted into the radial slot and then extends to the upper part of the clamping edge to fix the diffuser assembly.
C. The annular hoop is sleeved on the heat-insulation supporting disc, so that a supporting ring table of the heat-insulation supporting disc is in line contact with the annular hoop, and the annular hoop is supported.
D. Cooling the assembled mounting base, the diffuser assembly, the center positioning block and the diffuser axial positioning assembly under the set temperature condition, so that the mounting base, the diffuser assembly and the diffuser axial positioning assembly shrink under cooling; and heating the assembled annular band and the heat-preserving supporting disc under the set temperature condition, so that the annular band and the heat-preserving supporting disc are heated and expanded.
E. Taking out the mounting base, the diffuser assembly, the central positioning block and the diffuser axial positioning assembly which are in a cooling shrinkage state and are assembled together, taking out the annular hoops and the heat-preservation supporting disc which are in a heating expansion state and are assembled together, aligning the central insertion holes of the heat-preservation supporting disc with the central positioning block and the lugs of the annular hoops with the axial positioning pins, sleeving the annular hoops in the heating expansion state into the interference clamping parts of the diffuser assembly in the cooling shrinkage state, and bending the lugs of the annular hoops, so that the lugs of the annular hoops are tightly buckled with the diffuser assembly.
F. Pulling out the heat-preserving support disc through the handle, so that the heat-preserving support disc is separated from the annular hoop, and removing the radial insert blocks, so that the mounting base, the diffuser axial positioning assembly and the center positioning block are separated from the diffuser assembly; after the annular hoops and the diffuser assembly are restored to the room temperature, the annular hoops are fastened on the interference clamping parts, and large interference assembly is achieved.
The invention has the technical effects that: compared with the prior art, the tooling for assembling the annular hoops is made of the graphite material, and because the graphite has good heat preservation property and small thermal expansion coefficient, the graphite can provide heat by the heat preservation support plate when the annular hoops are assembled after being heated along with the annular hoops, so that the time of the annular hoops in a thermal expansion state is prolonged, the assembly time is prolonged, the assembly difficulty is reduced, and the success rate is greatly improved; the center positioning block penetrates through the centers of the diffuser assembly and the heat-insulating support disc during assembly, concentricity of the diffuser assembly and the annular hoop can be ensured, and the heat-insulating support disc can be axially limited by the interference clamping part during assembly of the heat-insulating support disc and the diffuser assembly by limiting the outer diameter of the heat-insulating support disc, so that the axial length of the annular hoop sleeved on the interference clamping part is controlled, and the assembly precision is improved; the heat-preserving support disc and the annular band are heated simultaneously during assembly, so that the temperature of the heat-preserving support disc is increased, the annular band is subjected to temperature compensation by the heat-preserving support disc during the assembly process after the heat-preserving support disc is taken out, and the thermal expansion time of the annular band can be effectively prolonged; the supporting ring table and the inner wall of the annular hoop form line contact, so that the outer ring surface of the heat-insulating supporting disc is prevented from being in surface contact with the annular hoop, and the subsequent supporting ring table is convenient to separate from the annular hoop.
Drawings
The invention is described in further detail below with reference to the drawings of the specification:
FIG. 1 is a schematic perspective view of a diffuser assembly;
FIG. 2 is a schematic perspective view of an annular band;
FIG. 3 is a schematic perspective view of the assembled tool for assembling the annular band of the present invention;
FIG. 4 is an exploded view of FIG. 3;
fig. 5 is a schematic structural view of the mounting base, the axial positioning ring, and the center positioning block.
In the figure: the diffuser assembly 1, the interference clamping part 11, the clamping edge 12, the central shaft hole 13, the axial through hole 14, the blades 15, the annular hoops 2, the lugs 21, the mounting base 3, the inner groove 31, the mounting hole 32, the limiting ring table 32, the diffuser axial positioning assembly 4, the axial positioning ring 41, the inner ring table 42, the axial positioning hole 43, the radial screw hole 44, the radial slot 45, the axial connecting hole 46, the heat insulation supporting disc 5, the central jack 51, the handle 52, the supporting ring table 53, the central positioning block 6, the radial plug 7, the screw 71, the axial positioning pin 8, the radial screw 81 and the connecting rod 82.
Detailed Description
Example 1
As shown in fig. 3 to 5, the tool for assembling the annular band of the present embodiment includes a mounting base 3, a diffuser axial positioning assembly 4, a cylindrical center positioning block 6, and a heat-retaining support plate 5 for supporting the annular band 2.
The center of the installation base 3 is provided with a circular inner groove 31 which is matched with the center positioning block 6, so that the tail end of the cylindrical center positioning block 6 can be inserted into the inner groove 31, the positioning is convenient to carry out when the center installation block 6 is assembled, the bottom end of the center installation block 6 is provided with a screw hole, and the center of the installation base 3 is provided with a through installation hole 32, so that the center installation block 6 can be fixedly arranged on the installation base 3 through screws.
The heat-insulating support plate 5 is a graphite plate, has good heat-insulating performance, and can perform heat compensation on the annular band 2 sleeved outside the heat-insulating support plate 5 so as to prolong the heated expansion time of the annular band 2; the bottom outer wall of the heat preservation supporting disk 5 is provided with a supporting ring table 53 along the circumferential bulge, and the supporting ring table 53 is tightly matched with the annular hoop 2, so that the supporting ring table 53 and the inner side wall 2 of the annular hoop form line contact when the heat preservation supporting disk 5 is inserted into the annular hoop 2, and support is formed on the annular hoop 2.
The diffuser axial positioning assembly 4 comprises an axial positioning ring 41, 4 axial positioning pins 8 and 8 radial inserting blocks 7, an inner ring table 42 matched with the clamping edge 12 of the diffuser assembly 1 is arranged at the front end of the axial positioning ring 41, a central inserting hole 51 matched with the central positioning block 6 in an inserting mode is arranged at the center of the heat preservation supporting disc 5, 8 radial inserting grooves 45 matched with the radial inserting blocks 7 are uniformly distributed on the edge of the axial positioning ring 41 along the radial direction, an axial positioning hole 43 matched with the axial positioning pin 8 is formed in the inner ring table 42, and the end portion of the axial positioning pin 8 can be inserted into the axial positioning hole 43 so that the axial positioning pin 8 is fixedly arranged on the axial positioning ring 41.
The mounting base 3 is disc-shaped, and the front edge of the mounting base 3 is provided with a limiting ring table 33 matched with the axial positioning ring 41, so that the axial positioning ring 41 can be clamped in the limiting ring table 33.
During use, the clamping edge 12 of the diffuser assembly 1 after cold shrinkage is fixed in the inner annular table 42 of the axial positioning ring 41, the radial insertion block 7 is inserted into the radial insertion groove 45 and then extends to the position above the clamping edge 12 to fix the diffuser assembly 1, the axial positioning ring 41 is fixedly connected with the mounting base 3, the central positioning block 6 penetrates through the central shaft hole 13 of the diffuser assembly 1, the heat-preserving support disc 5 supports the annular hoops 2 after hot expansion, the central insertion hole 51 of the heat-preserving support disc 5 is aligned with the central positioning block 6, the annular hoops 2 in a heated expansion state are sleeved into the interference clamping part 11 of the diffuser assembly 1 in a cooling shrinkage state, and the annular hoops 2 are clamped on the interference clamping part 11 of the diffuser assembly 1 after the annular hoops 2 and the diffuser assembly 1 are restored to normal temperature.
Preferably, the outer diameter of the supporting ring 53 is not smaller than the inner diameter of the interference clamping part 11 of the diffuser assembly 1, so that the thermal insulation supporting disc 5 is axially limited by the interference clamping part 11 when the thermal insulation supporting disc 5 is assembled with the diffuser axial positioning assembly 4, and the assembly precision is ensured.
Preferably, an axial connection hole 46 is provided in each radial slot 45, a through hole is provided in each radial insert 7, and after the radial insert 7 is inserted into the radial slot 45, a screw 71 is adopted to pass through the through hole and be in threaded fit with the axial connection hole 46, so as to fix the radial insert 7.
Preferably, 2 handles 52,2 handles 52 are fixedly arranged on the heat-insulating support plate 5 and symmetrically arranged on two sides of the central jack 51, so that the heat-insulating support plate 5 can be conveniently rotated to be separated from the annular band 2.
Preferably, the 4 axial positioning holes 43 are symmetrically arranged on two sides of the axial positioning ring 41 in groups of 2, each axial positioning pin 8 passes through the axial positioning hole 43 and then is inserted into the axial through hole 14 on the clamping edge 12, the edge of the corresponding axial positioning ring 41 of each axial positioning hole 43 is radially provided with a radial screw hole 44, after the axial positioning pin 8 is inserted into the axial positioning hole 43, a radial screw 81 is inserted into the radial screw hole 44 and then the axial positioning pin 8 is positioned, the axial positioning pin 8 is prevented from falling off, a connecting rod 82 is arranged between the two radial screws 81, and when the assembly, the lug 21 of the annular band 2 can be aligned with one axial positioning pin 8 or the middle line position between the lug 21 and the two axial positioning pins 8 for adjusting the angular position of the annular band 2.
Example 2
The working method of the tool for assembling the annular hoops comprises the following steps:
A. the center positioning block 6 is fixedly arranged at the center of the mounting base 3.
B. The axial locating pin 8 is installed into the axial locating ring 41, the center locating block 6 is inserted into the center shaft hole 13 of the diffuser assembly 1, so that the axial locating ring 41 is clamped into the limiting ring table 32 of the installation base 3, the clamping edge 12 of the diffuser assembly 1 is clamped into the inner ring table 42 of the axial locating ring 41, and the radial insert 7 is inserted into the radial slot 45 and then extends to the position above the clamping edge 12, so that the diffuser assembly 1 is fixed.
C. The annular hoops 2 are sleeved on the heat-preserving supporting disc 5, so that the supporting ring table 53 of the heat-preserving supporting disc 5 is in line contact with the annular hoops 2, and the annular hoops 2 are supported.
D. Cooling the assembled mounting base 3, diffuser assembly 1, center positioning block 6 and diffuser axial positioning assembly 4 under a set temperature condition (for example, at-80 ℃), so that the mounting base 3, diffuser assembly 1 and diffuser axial positioning assembly 4 are contracted by cooling; the assembled annular bands 2 and the heat-preserving supporting discs 5 are heated and raised under the set temperature condition (for example, 250 ℃), so that the annular bands 2 and the heat-preserving supporting discs 5 are heated and expanded.
E. Taking out the mounting base 3, the diffuser assembly 1, the central positioning block 6 and the diffuser axial positioning assembly 4 which are in a cooling shrinkage state and are assembled together, taking out the annular hoop 2 and the heat preservation supporting disk 5 which are in a heating expansion state and are assembled together, aligning the central insertion hole 51 of the heat preservation supporting disk 5 with the central positioning block 6 and the lugs 21 of the annular hoop 2 with the axial positioning pin 8, sleeving the annular hoop 2 in the heating expansion state into the interference clamping part 11 of the diffuser assembly 1 in the cooling shrinkage state, and bending the lugs 21 of the annular hoop 2 so that the lugs 21 of the annular hoop 2 are tightly buckled with the diffuser assembly 1.
F. Pulling out the heat-preserving support disc 5 through the handle 52, so that the heat-preserving support disc 5 is separated from the annular hoop 2, and removing the radial insert 7, so that the mounting base 3, the diffuser axial positioning assembly 4 and the center positioning block 6 are separated from the diffuser assembly 1; after the annular band 2 and the diffuser assembly 1 are restored to the room temperature, the annular band 2 is tightly buckled on the interference clamping part 11, so that large excessive assembly is realized.
It is apparent that the above examples are merely illustrative of the present invention and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious changes and modifications which come within the spirit of the invention are desired to be protected.
Claims (2)
1. The tool for assembling the annular hoops is characterized by comprising a mounting base, a diffuser axial positioning assembly, a cylindrical center positioning block and a heat-insulating supporting disc for supporting the annular hoops, wherein the center positioning block is fixedly arranged at the center of the mounting base;
the heat-insulating support disc is a graphite disc;
the outer wall of the bottom end of the heat-insulating support disc is provided with a support ring table in a protruding mode along the circumferential direction, and the support ring table is in tight fit with the annular hoop, so that the support ring table and the annular hoop form line contact when the heat-insulating support disc is inserted into the annular hoop;
the outer diameter of the supporting ring table is not smaller than the inner diameter of the interference clamping part of the diffuser assembly, so that the interference clamping part axially limits the heat-preserving supporting disc when the heat-preserving supporting disc is assembled with the diffuser axial positioning assembly;
the diffuser axial positioning assembly further comprises a plurality of axial positioning pins, the inner annular table is provided with axial positioning holes matched with the axial positioning pins, and the end parts of the axial positioning pins are inserted into the axial positioning holes so that the axial positioning pins are fixedly arranged on the axial positioning rings;
the diffuser axial positioning assembly further comprises a plurality of radial inserting blocks, and a plurality of radial slots matched with the radial inserting blocks are arranged on the edge of the axial positioning ring along the radial direction, so that after the clamping edges of the diffuser assembly are clamped into the axial positioning ring, the radial inserting blocks are inserted into the radial slots and then extend to the upper parts of the clamping edges;
the mounting base is disc-shaped, and a limiting ring table matched with the axial positioning ring is arranged at the front end edge of the mounting base so that the axial positioning ring can be clamped in the limiting ring table;
the center of the mounting base is provided with a circular inner groove matched with the center positioning block, so that the tail end of the center positioning block can be inserted into the inner groove; and a handle is fixedly arranged on the heat-preservation supporting plate.
2. The working method of the tool for assembling the annular band according to claim 1, comprising the steps of:
A. the center positioning block is fixedly arranged at the center of the mounting base;
B. the axial locating pin is arranged in the axial locating ring, the central locating block is inserted into the central shaft hole of the diffuser assembly, so that the axial locating ring is clamped into the limiting ring table of the mounting base and the clamping edge of the diffuser assembly to be clamped into the inner ring table of the axial locating ring, and the radial insert block is inserted into the radial slot and then extends to the upper part of the clamping edge to fix the diffuser assembly;
C. sleeving the annular hoops on the heat-insulating support disc, so that the support ring table of the heat-insulating support disc is in line contact with the annular hoops to support the annular hoops;
D. cooling the assembled mounting base, the diffuser assembly, the center positioning block and the diffuser axial positioning assembly under the set temperature condition, so that the mounting base, the diffuser assembly and the diffuser axial positioning assembly shrink under cooling; heating the assembled annular band and the heat-preserving supporting disc under the set temperature condition to enable the annular band and the heat-preserving supporting disc to expand when being heated;
E. taking out the mounting base, the diffuser assembly, the central positioning block and the diffuser axial positioning assembly which are in a cooling shrinkage state and are assembled together, taking out the annular hoops and the heat-preservation supporting disc which are in a heated expansion state and are assembled together, sleeving the annular hoops in the heated expansion state into the interference clamping part of the diffuser assembly in the cooling shrinkage state after aligning the central insertion holes of the heat-preservation supporting disc with the central positioning block and the lugs of the annular hoops with the axial positioning pins, and bending the lugs of the annular hoops so that the lugs of the annular hoops are tightly buckled with the diffuser assembly;
F. pulling out the heat-preserving support disc through the handle, so that the heat-preserving support disc is separated from the annular hoop, and removing the radial insert blocks, so that the mounting base, the diffuser axial positioning assembly and the center positioning block are separated from the diffuser assembly; after the annular hoops and the diffuser assembly are restored to the room temperature, the annular hoops are fastened on the interference clamping parts, and large interference assembly is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192378.0A CN109129267B (en) | 2018-10-13 | 2018-10-13 | Tool for assembling annular hoops and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192378.0A CN109129267B (en) | 2018-10-13 | 2018-10-13 | Tool for assembling annular hoops and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109129267A CN109129267A (en) | 2019-01-04 |
| CN109129267B true CN109129267B (en) | 2024-01-23 |
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| CN201811192378.0A Active CN109129267B (en) | 2018-10-13 | 2018-10-13 | Tool for assembling annular hoops and working method thereof |
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| CN (1) | CN109129267B (en) |
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| CN109877216A (en) * | 2019-04-12 | 2019-06-14 | 中国航发常州兰翔机械有限责任公司 | A kind of contraction of punching parts small space inside dimension tooling and its working method |
| CN112605616B (en) * | 2020-12-18 | 2021-10-26 | 哈尔滨电气动力装备有限公司 | Machining process of large-scale shielding motor thrust disc |
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| SE7607265L (en) * | 1975-06-24 | 1976-12-25 | Deere & Co | GASTURBINE ENGINE |
| JPH0949523A (en) * | 1995-08-08 | 1997-02-18 | Seiko Epson Corp | Magnet part reinforcing structure of superconduction magnetic bearing device and assembling jig used for same |
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| FR2955364A1 (en) * | 2010-01-19 | 2011-07-22 | Snecma | DIFFUSER-RECTIFIER CONNECTION FOR A CENTRIFUGAL COMPRESSOR |
| EP2357061A2 (en) * | 2010-02-15 | 2011-08-17 | Airbus Operations (S.A.S) | Bearing puller for pulling out a ring which is seated with an interference fit in a bore and respective method |
| CN208788434U (en) * | 2018-10-13 | 2019-04-26 | 中国航发常州兰翔机械有限责任公司 | A kind of circumferential band band tool for assembling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109129267A (en) | 2019-01-04 |
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