CN115041924A - Method for machining multistage centrifugal fan shell - Google Patents
Method for machining multistage centrifugal fan shell Download PDFInfo
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- CN115041924A CN115041924A CN202210738724.0A CN202210738724A CN115041924A CN 115041924 A CN115041924 A CN 115041924A CN 202210738724 A CN202210738724 A CN 202210738724A CN 115041924 A CN115041924 A CN 115041924A
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- 238000003754 machining Methods 0.000 title claims abstract description 23
- 241000886569 Cyprogenia stegaria Species 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005266 casting Methods 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000003672 processing method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000001788 irregular Effects 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 description 20
- 238000003466 welding Methods 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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- 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention belongs to the technical field of centrifugal fan production, and particularly relates to a method for processing a multistage centrifugal fan shell, which comprises the following steps: casting an air inlet shell and an air outlet shell, wherein the air inlet shell is provided with a fan shaft hole I, and the air outlet shell is provided with a fan shaft hole II; respectively supporting and fixing the air inlet casing and the air outlet casing by utilizing a tool, and machining the front and back surfaces of the air inlet casing and the air outlet casing; the tool comprises a vertical cylindrical part in the central area, and the axis of the cylindrical part is superposed with the axis of the fan shaft hole I or the fan shaft hole II; combining the air inlet casing and the air outlet casing into a whole through the connecting hole; compared with the prior art, the method for processing the multistage centrifugal fan shell can solve the problem that the irregular air inlet shell and air outlet shell of the multistage centrifugal fan are difficult to process, so that the form and position tolerance of the processed air inlet shell and air outlet shell is small, and smooth assembly is facilitated.
Description
Technical Field
The invention belongs to the technical field of centrifugal fan production, and particularly relates to a method for processing a multistage centrifugal fan shell.
Background
The shapes of a pair of shells of the multistage centrifugal fan are irregular, the requirements on the size and the form and position tolerance (coaxiality, verticality and the like) are strict during assembly, and the conventional common equipment is quite difficult to process.
The utility model discloses a CN216554602U utility model discloses an industrial ventilator casing integral assembly structure, including the casing main part, set up the casing bottom in casing main part bottom and set up the casing curb plate in casing main part rear side, casing main part rear side and bottom all are provided with first go-between, the top of casing bottom and the side of casing curb plate are provided with the second go-between respectively, a plurality of first connecting holes and a plurality of positioning clamping post are respectively arranged on the first connecting ring, a plurality of second connecting holes and a plurality of joint hole are respectively arranged on the second go-between, positioning clamping post passes the joint hole, make second go-between and first connecting ring laminating chucking, be provided with the screw in the first connecting hole, the screw passes first connecting hole and second connecting hole and is equipped with the first nut; this industrial ventilator casing overall assembly structure is through setting current ventilator casing into casing main part, casing bottom and casing curb plate to adopt mechanical fastening mode to connect, replace traditional welding process, avoid welding deformation's the condition to take place. Industrial ventilator casing structure among CN216554602U is simple relatively, including casing main part, casing end and casing curb plate, only can through location chucking post during the assembly, and multistage centrifugal fan's in this application inlet casing and the casing asymmetry and the structure of giving vent to anger are complicated, can't assemble through the technical scheme among CN 216554602U.
The application of CN215469198U relates to a fan casing assists interfacing apparatus, relate to the field of fan casing production facility technique, it includes the welding bench, a supporting bench, bottom adjustment mechanism and top adjustment mechanism, top adjustment mechanism includes drive assembly, two-way screw rod, top slider and regulation pole, the top groove has been seted up on the supporting bench, the top slider sets up at the top inslot respectively, the top and the regulation pole of top slider are connected, it is used for carrying out position control to the fan casing to adjust the pole, the top slider setting is run through respectively at the both ends of two-way screw rod, two-way screw rod's both ends are rotated with a supporting bench and are connected, the length direction setting in top groove is followed to two-way screw rod, two-way screw rod stretches out the one end of a supporting bench and is connected with drive assembly, drive assembly is used for driving two-way screw rod and rotates. CN215469198U application is passed through drive assembly, can realize the accurate butt joint of upper casing and lower casing, and the welding personnel of being convenient for welds upper casing and lower casing, and then improves work efficiency. The accurate butt joint of the upper shell and the lower shell in CN215469198U is the butt joint of the outer periphery, and if the coaxiality of the corresponding holes in the upper shell and the lower shell is poor, the assembly cannot be completed smoothly even if the outer periphery is butt jointed.
Disclosure of Invention
Aiming at the problems, the invention provides a method for processing a multistage centrifugal fan shell.
In order to achieve the purpose, the invention adopts the technical scheme that: a processing method of a multistage centrifugal fan shell comprises the following steps:
casting an air inlet shell and an air outlet shell, wherein the air inlet shell is provided with a fan shaft hole I, and the air outlet shell is provided with a fan shaft hole II;
respectively supporting and fixing an air inlet casing and an air outlet casing by utilizing a tool, and machining the front and back surfaces of the air inlet casing and the air outlet casing; the tool comprises a vertical cylindrical part in the central area, and the axis of the cylindrical part is superposed with the axis of the fan shaft hole I or the fan shaft hole II;
and step three, combining the air inlet casing and the air outlet casing into a whole through the connecting hole.
Preferably, the tool comprises a first tool and a second tool; the upper part of the cylindrical part of the first tool is horizontally and fixedly connected with a first supporting part in a circular boss shape, the lower part of the cylindrical part of the first tool is horizontally and fixedly connected with a first base, and a plurality of first reinforcing plates are fixedly connected between the first supporting part and the first base; a vertical through hole I is formed in the center of the first supporting part; a vertical threaded through hole is formed in the center of the first base; the first through hole and the threaded through hole are superposed with the axis of a cylindrical part of the tooling; the upper part of the cylindrical part of the second tool is horizontally and fixedly connected with a second supporting part, the lower part of the cylindrical part of the second tool is horizontally and fixedly connected with a second base, and a plurality of second reinforcing plates are fixedly connected between the second supporting part and the second base; a vertical through hole II is formed in the center of the second supporting part; the second supporting part is also provided with a plurality of vertical threaded blind holes in a balanced manner; and the second through hole is superposed with the axis of the second cylindrical part of the tool.
Preferably, in the second step, when the reverse side of the air inlet casing is machined, the first supporting part of the first tool is matched with the outer side of the first fan shaft hole of the air inlet casing, and the machining comprises machining of a fan shaft mounting hole of the air inlet casing; then utilize double-threaded screw to pass the through-hole one of supporting part one and the cylinder spare of frock one from top to bottom in proper order, the lower extreme of double-threaded screw cooperates with the screw thread through-hole of base one, and the clamp plate is established to double-threaded screw's upper portion level cover, the clamp plate compresses tightly through the nut of top, nut and double-threaded screw's upper portion threaded connection.
Preferably, in the second step, when the reverse side of the air outlet casing is machined, the supporting part I of the tooling I is matched with the outer side of the fan shaft hole II of the air outlet casing, the machining comprises machining of the air outlet casing (a fan shaft mounting hole), then the double-head screw rod sequentially penetrates through the through hole I of the supporting part I and the cylinder part of the tooling I from top to bottom, the lower end of the double-head screw rod is matched with the threaded through hole of the base I, the upper part of the double-head screw rod is horizontally sleeved with the pressing plate, the pressing plate is pressed tightly through the nut above the double-head screw rod, and the nut is in threaded connection with the upper part of the double-head screw rod.
Preferably, in the second step, when the front surface of the air inlet casing is machined, the supporting part of the second tool is used for supporting the inner sides of the fan shaft holes of the air inlet casing, meanwhile, the vertical threaded blind holes of the second supporting part are aligned with the fan shaft mounting holes of the air inlet casing, and then the fan shaft mounting holes and the threaded blind holes are screwed in sequence through bolts.
Preferably, in the second step, when the front surface of the air outlet machine shell is machined, the supporting part of the second tool is used for supporting the inner side of the second fan shaft hole of the air outlet machine shell, meanwhile, the vertical threaded blind hole of the second supporting part is aligned with the fan shaft mounting hole of the air outlet machine shell, and then the fan shaft mounting hole and the threaded blind hole are screwed in sequence through bolts.
Preferably, in the second step, when the reverse surfaces of the inlet casing and the outlet casing are processed, two pairs of end parts of the inlet casing or the outlet casing are supported by using a first auxiliary support and a second auxiliary support.
Preferably, in the second step, when the front faces of the inlet casing and the outlet casing are processed, a third auxiliary support and a fourth auxiliary support are used for supporting the end part of the inlet casing or the end part of the outlet casing.
Preferably, when the tool is used, firstly, the first base is horizontally arranged on the working platform; when the second tool is used, the second base is horizontally arranged on the working platform.
Preferably, the air inlet casing and the air outlet casing are combined into a whole in the third step, and the first supporting part of the first tool is matched with the outer side of the second fan shaft hole of the air outlet casing; the reverse side of the air inlet casing aligns with the reverse side of the air outlet casing, then the double-threaded screw is utilized to sequentially pass through the air inlet casing, the air outlet casing, the first through hole of the first supporting part and the first cylindrical part of the first tool from top to bottom, the lower end of the double-threaded screw is matched with the first threaded through hole of the base, the upper part of the double-threaded screw is horizontally sleeved with the pressing plate, the pressing plate is pressed tightly through the nut above the pressing plate, and the nut is in threaded connection with the upper part of the double-threaded screw.
Compared with the prior art, the invention has the advantages and positive effects that:
(1) the processing method of the multistage centrifugal fan shell can solve the problem that the irregular air inlet shell and air outlet shell of the multistage centrifugal fan are difficult to process, so that the form and position tolerance of the processed air inlet shell and air outlet shell is small, and smooth assembly is facilitated;
(2) when the air inlet casing and the air outlet casing are not provided with the air outlet shaft mounting holes, the air inlet casing or the air outlet casing is fixed above the first tooling through the matching of the first tooling, the double-headed screw, the pressing plate and the nut, the screw is the axis of the first fan shaft hole or the second fan shaft hole, and the processing can be carried out by taking the axis as a reference;
(3) when air inlet machine shell and air outlet machine shell are processed with air outlet machine shaft mounting holes, a second supporting part of a second tool is used for supporting the inner side of a first fan shaft hole of the air inlet machine shell or the inner side of a second fan shaft hole of the air outlet machine shell, meanwhile, a vertical threaded blind hole of the second supporting part is aligned with the fan shaft mounting hole, and then a fan shaft mounting hole and a threaded blind hole are screwed in by bolts in sequence; by the technical scheme, the axis of the tool II is superposed with the axis of the fan shaft hole I or the axis of the fan shaft hole II, and the processing can be carried out by taking the axis as a reference;
(4) combining the air inlet casing and the air outlet casing into a whole, and matching the first supporting part of the first tool with the second outer side of the fan shaft hole of the air outlet casing; the reverse side of the air inlet casing is aligned with the reverse side of the air outlet casing, then the double-threaded screw sequentially penetrates through the air inlet casing, the air outlet casing, a first through hole of the first supporting part and a cylindrical part of the first tool from top to bottom, the lower end of the double-threaded screw is matched with a threaded through hole of the first base, a pressing plate is horizontally sleeved at the upper part of the double-threaded screw, the pressing plate is pressed tightly through a nut above the pressing plate, and the nut is in threaded connection with the upper part of the double-threaded screw; through the technical scheme, the air inlet casing and the air outlet casing are accurately butted and relatively fixed, and the assembly is facilitated.
Drawings
To more clearly illustrate the technical solution of the embodiment of the present invention, the drawings used in the description of the embodiment will be briefly introduced below, and fig. 1 is a schematic view of an air inlet casing and an air outlet casing combined together;
FIG. 2 is a schematic view of a pair of supporting and positioning of the air inlet housing by the tooling when the reverse side of the air inlet housing is machined;
FIG. 3 is a schematic view of a pair of supporting and positioning of the vent housing by the tooling when the reverse side of the vent housing is machined;
FIG. 4 is a schematic view of a pair of air inlet housing supports and positions of a tooling when the front side of the air inlet housing is machined;
FIG. 5 is a first schematic view of a first support and positioning of two pairs of outlet housings during machining of the front surfaces of the outlet housings;
FIG. 6 is a second schematic view of the tooling for supporting and positioning two pairs of air outlet housings during the machining of the front surfaces of the air outlet housings;
FIG. 7 is a first schematic view of a second tooling;
FIG. 8 is a second schematic view of the second tooling;
FIG. 9 is a first schematic view of a tooling assembly;
FIG. 10 is a second schematic view of the first tooling;
FIG. 11 is a front view of the air intake housing;
fig. 12 is a front view of the outlet housing.
Description of reference numerals:
1-air inlet casing, 2-air outlet casing;
3-tooling one, 31-supporting part one, 32-reinforcing plate one, 33-base one, 34-threaded through hole;
4, auxiliary supporting I; 5, auxiliary supporting II;
6, a second tool, 61, a second support part, 62, a second reinforcing plate, 63 and a second base;
7-auxiliary support three, 8-auxiliary support four, 9-working platform, 10-nut, 11-pressing plate, and 12-double-threaded screw.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
Example 1
The invention is further described with reference to fig. 1-12, a method of manufacturing a multi-stage centrifugal fan housing comprising the steps of:
casting and producing an air inlet casing 1 and an air outlet casing 2, wherein the air inlet casing 1 is provided with a fan shaft hole I, and the air outlet casing 2 is provided with a fan shaft hole II.
As shown in fig. 2-6, in the second step, the air inlet casing 1 and the air outlet casing 2 are supported and fixed by using a tool respectively, and the front and back surfaces of the air inlet casing 1 and the air outlet casing 2 are machined (inner hole, excircle and plane are machined); the tool comprises a vertical cylindrical part in the central area, and the axis of the cylindrical part is superposed with the axis of the fan shaft hole I or the axis of the fan shaft hole II.
As shown in fig. 1, in step three, the inlet casing 1 and the outlet casing 2 are integrated through the connection hole.
The tool comprises a first tool 3 and a second tool 6. As shown in fig. 7 and 8, a circular boss-shaped support part first 31 is horizontally and fixedly connected to the upper part of the cylindrical part of the tool first 3, a base first 33 is horizontally and fixedly connected to the lower part of the cylindrical part of the tool first 3, and a plurality of reinforcing plates first 32 are fixedly connected between the support part first 31 and the base first 33; a first vertical through hole is formed in the center of the first support part 31; a vertical threaded through hole 34 is formed in the center of the first base 33; the first through hole and the threaded through hole 34 are overlapped with the axis of the cylindrical part of the first tool 3.
As shown in fig. 9 and 10, a second supporting part 61 is horizontally and fixedly connected to the upper part of the cylindrical part of the second tool 6, a second base 63 is horizontally and fixedly connected to the lower part of the cylindrical part of the second tool 6, and a plurality of second reinforcing plates 62 are fixedly connected between the second supporting part 61 and the second base 63; a vertical through hole II is formed in the center of the second supporting part 61; the second supporting part 61 is also provided with a plurality of vertical threaded blind holes in a balanced manner; the second through hole coincides with the axis of the second tool 6 cylinder.
Step two, when the reverse side of the air inlet casing 1 is machined, the supporting part I31 of the tooling I3 is matched with the outer side of the fan shaft hole I of the air inlet casing 1, and the machining comprises machining of a fan shaft mounting hole of the air inlet casing 1; then, the double-threaded screw 12 sequentially penetrates through the first through hole of the first supporting portion 31 and the cylindrical part of the first tool 3 from top to bottom, the lower end of the double-threaded screw 12 is matched with the threaded through hole 34 of the first base 33, the pressing plate 11 is horizontally sleeved on the upper portion of the double-threaded screw 12, the pressing plate 11 is pressed tightly through the nut 10 above the pressing plate, and the nut 10 is in threaded connection with the upper portion of the double-threaded screw 12.
In the second step, when the reverse side of the air outlet casing 2 is machined, the supporting part I31 of the tooling I3 is matched with the outer side of a fan shaft hole II of the air outlet casing 2, and the machining comprises the machining of a fan shaft mounting hole of the air outlet casing 2; then, the double-threaded screw 12 sequentially penetrates through the first through hole of the first supporting portion 31 and the cylindrical part of the first tool 3 from top to bottom, the lower end of the double-threaded screw 12 is matched with the threaded through hole 34 of the first base 33, the pressing plate 11 is horizontally sleeved on the upper portion of the double-threaded screw 12, the pressing plate 11 is pressed tightly through the nut 10 above the pressing plate, and the nut 10 is in threaded connection with the upper portion of the double-threaded screw 12.
And step two, when the front side of the air inlet casing 1 is machined, the inner side of a fan shaft hole of the air inlet casing 1 is supported by the second supporting part 61 of the second tool 6, meanwhile, the vertical threaded blind hole of the second supporting part 61 is aligned with a fan shaft mounting hole of the air inlet casing 1, and then the fan shaft mounting hole and the threaded blind hole are screwed in sequence by bolts.
And in the second step, when the front side of the air outlet casing 2 is machined, the inner side of a fan shaft hole II of the air outlet casing 2 is supported by using a second supporting part 61 of the second tool 6, meanwhile, a vertical threaded blind hole of the second supporting part 61 is aligned with a fan shaft mounting hole of the air outlet casing 2, and then the fan shaft mounting hole and the threaded blind hole are screwed in sequence by using bolts.
In the second step, when the reverse surfaces of the air inlet casing 1 and the air outlet casing 2 are processed, the first auxiliary support 4 and the second auxiliary support 5 are used for supporting the end part of the air inlet casing 1 or the air outlet casing 2.
In the second step, when the front faces of the air inlet casing 1 and the air outlet casing 2 are processed, an auxiliary support III 7 and an auxiliary support IV 8 are used for supporting the end part of the air inlet casing 1 or the air outlet casing 2.
When the first tool 3 is used, the first base 33 is horizontally arranged on the working platform 9; when the second tool 6 is used, the second base 63 is horizontally arranged on the working platform 9.
Combining the air inlet casing 1 and the air outlet casing 2 into a whole, and matching the outer side of a fan shaft hole II of the air outlet casing 2 by using a supporting part I31 of a tool I3; the reverse side of air inlet casing 1 aligns with the reverse side of the casing 2 of giving vent to anger, then utilizes double threaded screw 12 to pass air inlet casing 1, the casing 2 of giving vent to anger, the through-hole one of a supporting part 31 and the cylinder spare of frock 3 from top to bottom in proper order, and the lower extreme of double threaded screw 12 cooperates with the screw thread through-hole 34 of base 33, and clamp plate 11 is established to the upper portion level cover of double threaded screw 12, and clamp plate 11 compresses tightly through the nut 10 of top, nut 10 and double threaded screw 12's upper portion threaded connection.
When the air inlet casing 1 and the air outlet casing 2 are not provided with the air outlet shaft mounting holes, the air inlet casing 1 or the air outlet casing 2 is fixed above the first tool 3 by matching the first tool 3, the double-threaded screw 12, the pressing plate 11 and the nut 10, the double-threaded screw 12 is the axis of the first fan shaft hole or the second fan shaft hole, and the processing can be carried out by taking the axis as a reference.
When the air inlet casing 1 and the air outlet casing 2 are used for processing air outlet machine shaft mounting holes, the inner side of a fan shaft hole I of the air inlet casing 1 is supported by a supporting part II 61 of a tool II 6 or the inner side of a fan shaft hole II of the air outlet casing 2 is supported, meanwhile, a vertical threaded blind hole of the supporting part II 61 is aligned with the fan shaft mounting hole, and then the fan shaft mounting hole and the threaded blind hole are screwed in by bolts in sequence; through the technical scheme, the axis of the second tool 6 is coincided with the axis of the first fan shaft hole or the axis of the second fan shaft hole, and the second tool can be machined on the basis of the axis.
Combining the air inlet casing 1 and the air outlet casing 2 into a whole, and matching the outer side of a fan shaft hole II of the air outlet casing 2 by using a supporting part I31 of a tool I3; the reverse side of the air inlet casing 1 is aligned with the reverse side of the air outlet casing 2, then the double-threaded screw 12 sequentially penetrates through the air inlet casing 1, the air outlet casing 2, a first through hole of the supporting part I31 and a cylindrical part of the tooling I3 from top to bottom, the lower end of the double-threaded screw 12 is matched with a threaded through hole of the base I33, the upper part of the double-threaded screw 12 is horizontally sleeved with a pressing plate 11, the pressing plate 11 is pressed tightly through a nut 10 above the pressing plate, and the nut 10 is in threaded connection with the upper part of the double-threaded screw 12; through the technical scheme, the air inlet machine shell 1 and the air outlet machine shell 2 are accurately butted and relatively fixed, and the assembly is convenient.
The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above embodiments with modifications and variations to the disclosed technical content to apply the equivalent embodiments in other fields, but any simple modification and equivalent variation made on the above embodiments according to the technical spirit of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. The processing method of the multistage centrifugal fan shell is characterized by comprising the following steps of:
casting and producing an air inlet casing (1) and an air outlet casing (2), wherein the air inlet casing (1) is provided with a first fan shaft hole, and the air outlet casing (2) is provided with a second fan shaft hole;
respectively supporting and fixing an air inlet casing (1) and an air outlet casing (2) by utilizing a tool, and machining the front surface and the back surface of the air inlet casing (1) and the air outlet casing (2); the tool comprises a vertical cylindrical part in the central area, and the axis of the cylindrical part is superposed with the axis of the fan shaft hole I or the fan shaft hole II;
and step three, the air inlet casing (1) and the air outlet casing (2) are combined into a whole through the connecting hole.
2. The machining method for the multistage centrifugal fan shell according to claim 1, wherein the tool comprises a first tool (3) and a second tool (6);
a first circular boss-shaped supporting part (31) is horizontally and fixedly connected to the upper part of the cylindrical part of the first tool (3), a first base (33) is horizontally and fixedly connected to the lower part of the cylindrical part of the first tool (3), and a plurality of first reinforcing plates (32) are fixedly connected between the first supporting part (31) and the first base (33); a first vertical through hole is formed in the center of the first support part (31); a vertical threaded through hole (34) is formed in the center of the first base (33); the through hole I and the threaded through hole (34) are superposed with the axis of the cylindrical part of the tool I (3);
a second supporting part (61) is horizontally and fixedly connected to the upper part of the cylindrical part of the second tool (6), a second base (63) is horizontally and fixedly connected to the lower part of the cylindrical part of the second tool (6), and a plurality of second reinforcing plates (62) are fixedly connected between the second supporting part (61) and the second base (63); a second vertical through hole is formed in the center of the second support part (61); the second support part (61) is also provided with a plurality of vertical threaded blind holes in a balanced manner; and the second through hole coincides with the axis of the cylindrical part of the second tool (6).
3. The processing method of the multistage centrifugal fan shell according to claim 2, wherein in the second step, when the reverse side of the air inlet casing (1) is processed, a first supporting part (31) of a first tool (3) is matched with an outer side of a fan shaft hole of the air inlet casing (1), and the processing comprises processing of a fan shaft mounting hole of the air inlet casing (1); then utilize double-threaded screw (12) from the top down to pass the through-hole one of supporting part one (31) and the cylinder spare of frock one (3) in proper order, the lower extreme of double-threaded screw (12) cooperates with screw thread through-hole (34) of base one (33), and clamp plate (11) are established to the upper portion level cover of double-threaded screw (12), clamp plate (11) compress tightly through nut (10) of top, nut (10) and the upper portion threaded connection of double-threaded screw (12).
4. The machining method of the multistage centrifugal fan shell according to claim 2, wherein in the second step, when machining is performed on the reverse side of the air outlet machine shell (2), a first supporting part (31) of a first tool (3) is matched with the outer side of a second fan shaft hole of the air outlet machine shell (2), and the machining comprises machining of a fan shaft mounting hole of the air outlet machine shell (2); then utilize double-threaded screw (12) from the top down to pass the through-hole one of supporting part one (31) and the cylinder spare of frock one (3) in proper order, the lower extreme of double-threaded screw (12) cooperates with screw thread through-hole (34) of base one (33), and clamp plate (11) are established to the upper portion level cover of double-threaded screw (12), clamp plate (11) compress tightly through nut (10) of top, nut (10) and the upper portion threaded connection of double-threaded screw (12).
5. The multistage centrifugal fan shell machining method according to claim 3 or 4, wherein in the second step, when the front face of the air inlet casing (1) is machined, the second support part (61) of the second tooling (6) is used for supporting the inner side of the fan shaft hole of the air inlet casing (1), meanwhile, the vertical threaded blind hole of the second support part (61) is aligned with the fan shaft mounting hole of the air inlet casing (1), and then the fan shaft mounting hole and the threaded blind hole are screwed in sequence through bolts.
6. The multistage centrifugal fan shell machining method according to claim 5, characterized in that in the second step, when the front face of the air outlet machine shell (2) is machined, the inner side of the fan shaft hole two of the air outlet machine shell (2) is supported by the second supporting part (61) of the second tool (6), meanwhile, the vertical threaded blind hole of the second supporting part (61) is aligned with the fan shaft mounting hole of the air outlet machine shell (2), and then the fan shaft mounting hole and the threaded blind hole are screwed in sequence by bolts.
7. The processing method of the multistage centrifugal fan shell according to claim 3 or 4, wherein in the second step, when the reverse surfaces of the inlet casing (1) and the outlet casing (2) are processed, the first auxiliary support (4) and the second auxiliary support (5) are used for supporting the end part of the inlet casing (1) or the outlet casing (2).
8. The method for processing the multistage centrifugal fan shell according to claim 6, wherein in the second step, when the front faces of the air inlet case (1) and the air outlet case (2) are processed, an auxiliary support III (7) and an auxiliary support IV (8) are used for supporting the end part of the air inlet case (1) or the air outlet case (2).
9. The machining method for the multistage centrifugal fan shell body as claimed in claim 6, characterized in that when the tool I (3) is used, the base I (33) is horizontally arranged on the working platform (9); when the second tool (6) is used, the second base (63) is horizontally arranged on the working platform (9) firstly.
10. The processing method of the multistage centrifugal fan shell according to claim 2, wherein in the third step, the air inlet shell (1) and the air outlet shell (2) are combined into a whole, and the first support part (31) of the first tooling (3) is matched with the outer side of the second fan shaft hole of the air outlet shell (2); the reverse side of air inlet casing (1) aligns with the reverse side of the casing of giving vent to anger (2), then utilizes double threaded screw (12) to pass air inlet casing (1), the casing of giving vent to anger (2), the through-hole of supporting part (31) and the cylinder spare of frock (3) by last under to in proper order, and the lower extreme of double threaded screw (12) cooperates with screw through-hole (34) of base (33), and clamp plate (11) are established to the upper portion level cover of double threaded screw (12), clamp plate (11) compress tightly through nut (10) of top, nut (10) and the upper portion threaded connection of double threaded screw (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210738724.0A CN115041924B (en) | 2022-06-28 | 2022-06-28 | Multistage centrifugal fan shell processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210738724.0A CN115041924B (en) | 2022-06-28 | 2022-06-28 | Multistage centrifugal fan shell processing method |
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| CN115041924A true CN115041924A (en) | 2022-09-13 |
| CN115041924B CN115041924B (en) | 2024-01-23 |
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| CN (1) | CN115041924B (en) |
Citations (15)
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| CN112677082A (en) * | 2020-12-30 | 2021-04-20 | 湖北三江航天万山特种车辆有限公司 | Internal gear pump rear pump shell positioning tool |
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| CN204868222U (en) * | 2015-08-14 | 2015-12-16 | 安徽工程大学 | Special fixture of pump case part bore hole processing |
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| CN111577660A (en) * | 2019-02-18 | 2020-08-25 | 欧德克斯有限公司 | Compressor housing for turbocharger and method for manufacturing same |
| CN110052859A (en) * | 2019-05-10 | 2019-07-26 | 海宁弘德机械有限公司 | A kind of compressor housing tooling |
| WO2021241408A1 (en) * | 2020-05-28 | 2021-12-02 | 三菱パワー株式会社 | Method for maintaining steam turbine, and steam turbine |
| CN112677082A (en) * | 2020-12-30 | 2021-04-20 | 湖北三江航天万山特种车辆有限公司 | Internal gear pump rear pump shell positioning tool |
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|---|---|
| CN115041924B (en) | 2024-01-23 |
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