CN115351512B - Machining method of conical arc-shaped air inlet of ventilator - Google Patents
Machining method of conical arc-shaped air inlet of ventilator Download PDFInfo
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- CN115351512B CN115351512B CN202211079031.1A CN202211079031A CN115351512B CN 115351512 B CN115351512 B CN 115351512B CN 202211079031 A CN202211079031 A CN 202211079031A CN 115351512 B CN115351512 B CN 115351512B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003754 machining Methods 0.000 title claims description 4
- 238000003466 welding Methods 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 40
- 238000012545 processing Methods 0.000 claims abstract description 31
- 238000009987 spinning Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 11
- 238000003672 processing method Methods 0.000 claims abstract description 8
- 238000007493 shaping process Methods 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 15
- 230000011218 segmentation Effects 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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Abstract
The invention discloses a processing method of an arc air inlet of a ventilator cone, which relates to the technical field of fan manufacturing and comprises the following processing steps of modularized cutting, cutting and blanking of products to form corresponding module material plates, rolling cones of the material plates to form a material cylinder, and welding the material cylinder to form a cone cylinder and an arc cylinder cone cylinder through rough rounding and finishing rounding procedures; the arc cylinder cone is formed into an arc cylinder through spinning, rough rounding and finishing rounding, and then each cone cylinder module and the arc cylinder module are welded to form a cone arc air inlet.
Description
Technical Field
The invention relates to the technical field of fan manufacturing, in particular to a processing method of a conical arc-shaped air inlet of a ventilator.
Background
The air inlet of the fan is an air inlet device which ensures that the air flow can uniformly fill the inlet of the impeller and the flow loss of the air flow is minimized; the air inlet of the common centrifugal ventilator has various structures such as a cylinder, a cone, an arc shape, an arc cone shape and the like. The flow loss of the cylindrical air inlet is the largest, the flow state of guiding the air flow into the impeller is the worst, and the processing technology is convenient. Compared with the cylindrical air inlet, the conical air inlet has lower flow loss, and the flow state is better than that of the cylindrical air inlet, but is still not ideal. After the circular arc air inlet guides the air flow to enter the impeller, the formed vortex area is much smaller than the conical air inlet, but the air inlet effect is still inferior to that of the conical air inlet. The flow loss of the conical arc air inlet is minimum, the flow state of guiding the air flow to enter the impeller is also optimal, and compared with the conical air inlet and the conical arc air inlet, the conical arc air inlet is adopted to save electricity most economically, so that the conical arc air inlet is widely applied to modern centrifugal ventilators.
However, the processing technology of the conical arc-shaped air inlet is most complicated, the air duct of the conical arc-shaped air inlet consists of conical sections and arc sections, and the manufacturing technology of the air duct comprises the processes of cutting and blanking, rolling into a cylinder, welding, shaping and the like, wherein the conical cylinder and the arc-shaped cylinder after welding possibly take an elliptical shape, the original mode generally requires a worker to observe the circular degree of the conical cylinder by visual inspection or using a box ruler, and the worker usually uses a hammer to smash the elliptical workpiece to enable the workpiece to approach to a circular shape, but each section of the air inlet is difficult to achieve to be a perfect circular shape. The shaped conical cylinder and the arc cylinder are welded together, concentricity is also visually measured by naked eyes, so that each section of the air inlet is not concentric, and when the fan operates, the air inlet and the fan impeller are in friction; therefore, a good processing method for ensuring concentricity of the air inlet is not provided.
Disclosure of Invention
The invention provides a processing method of a conical arc air inlet of a ventilator, which aims to solve the technical problems that the processing technology of the conical arc air inlet is difficult, concentricity of each section of the air inlet is difficult to ensure and friction occurs between a fan impeller and the air inlet.
The technical problems of the invention are realized by the following technical scheme: a processing method of a conical arc air inlet of a ventilator comprises the following processing steps:
a, product modularization segmentation is carried out, segmentation processing parts and size requirements of a conical section and an arc section of a conical arc air inlet are determined, and segmentation processing drawings are drawn;
b, cutting and blanking according to the requirements of the drawn cutting and processing drawing; obtaining a conical section material plate and an arc section material plate;
c, rolling the conical section material plate and the arc section material plate to form a conical barrel material roll and an arc barrel material roll;
d, welding and rounding the conical cylinder material roll and the arc cylinder material roll, finishing the round through the whole conical assembly, and adjusting the roundness and concentricity; forming a conical cylinder and an arc-shaped cylinder conical cylinder;
e, spinning the conical cylinder of the arc cylinder, finishing the round through the whole conical assembly, and adjusting the circularity and concentricity to form the arc cylinder;
and F, sequentially stacking and welding the conical barrels and the arc barrels of each section through an annular expansion ruler to finish manufacturing of the conical arc air inlet.
Through using above technical scheme, cut apart processing with the arc air intake, the processing degree of difficulty of cone arc air intake has been reduced, for guaranteeing the concentricity requirement of cone section of thick bamboo and arc section of thick bamboo after cutting apart, adopt whole circular cone subassembly to replace the roundness measurement mode of vision or box chi and the correction technology that the big hammer knocked out in the traditional technology, thereby guarantee concentricity requirement, thereby avoid the friction phenomenon after fan air intake and the fan impeller installation, concentricity and roundness requirement in order to guarantee design manufacturing process through whole circular cone subassembly and annular expansion chi simultaneously, clearance between fan impeller and the air intake has been reduced, the secondary circulation flow of gas is reduced, and fan efficiency is improved.
Preferably, the specific construction steps of the step D include:
d1, respectively butting an interface of the conical cylinder material roll and an interface of the conical section of the arc cylinder material roll, and welding and connecting by using a welding machine;
d2, rolling the conical cylinder material roll and the arc-shaped cylinder material roll which are welded and connected by a three-roller plate rolling machine to form a rough and whole conical cylinder and a rough and whole arc-shaped cylinder conical cylinder;
d3, finishing the conical cylinder and the arc-shaped cylindrical conical cylinder after rough rounding by using the rounding conical assembly to form the conical cylinder and the arc-shaped cylindrical conical cylinder.
Preferably, the specific construction steps of the step E include:
e1, spinning the conical cylinder of the arc cylinder into a thick detected arc cylinder by using a spinning machine, and detecting the radian of the arc cylinder;
and e2, finishing the circular processing is carried out on the arc-shaped cylinder which is roughly detected by using the whole cone assembly, and the circular degree and the concentricity are adjusted to form the arc-shaped cylinder.
Preferably, the specific construction steps of the step F include:
f1, adjusting the length and height of the annular expansion ruler, and sequentially sleeving a conical cylinder and an arc cylinder on the outer side of the annular expansion ruler to stack;
f2, spot welding and connecting the cone-shaped cylinders and the arc-shaped cylinders which are in contact with each other, and welding and connecting an air inlet flange at an air inlet;
and f3, adopting full-scale welding at all welding line positions of the air inlet to finish manufacturing the air inlet.
Preferably, after step e2, the method further comprises the steps of fixing the opening end to be connected of the arc-shaped cylinder by using a shaping flange assembly, and then detaching the arc-shaped cylinder from the whole cone assembly;
the shaping flange assembly comprises a shaping flange and a supporting column, and the shaping flange is connected to the round opening of the arc-shaped cylinder through the supporting column in a welding mode.
By using the technical scheme, the shaping flange component is used for preventing the arc cylinder from deforming after spinning finishing the circle, preventing the arc cylinder from changing back to an elliptical shape again, and fixing the adjusted round opening; meanwhile, the structural mode of the shaping flange and the supporting cylinder can adapt to the connecting structure of the arc cylinder round mouth of the non-standard part, and the actual fixing requirement is met.
Preferably, the whole cone assembly comprises a whole cone, a gauge upright rod, a gauge assembly, a cylinder upright rod and an impact cylinder assembly; a gauge upright rod and a cylinder upright rod are slidably arranged on the annular direction of the whole cone; a gauge assembly is slidably arranged on the gauge upright rod, and the gauge assembly and the gauge upright rod are oppositely and vertically arranged; the cylinder pole setting is provided with an impact cylinder assembly in a sliding manner, and the impact cylinder assembly and the cylinder pole setting are arranged relatively and vertically.
Preferably, the gauge assembly comprises a gauge adjusting slide block and a detection gauge, wherein the gauge adjusting slide block is connected with the gauge upright rod in a sliding mode, and the detection gauge is connected with the gauge adjusting slide block in a sliding mode along the horizontal direction.
Preferably, the impact cylinder assembly comprises a cylinder adjusting slide block and an impact cylinder; the cylinder adjusting slide block is connected with the cylinder vertical rod in a sliding mode, an impact cylinder is fixedly installed on the cylinder adjusting slide block, and the telescopic end of the impact cylinder is arranged in the horizontal direction.
Preferably, the annular expansion ruler comprises a base, a ruler upright post and an annular ruler group; the base is vertically provided with a ruler stand column, and an annular ruler group is slidably arranged on the ruler stand column.
Preferably, the annular ruler group comprises a lifting shaft sleeve and an expansion ruler group; the lifting shaft sleeve is arranged on the ruler stand column in a sliding sleeve mode, and a plurality of expansion ruler sets are arranged on the side portion of the lifting shaft sleeve in a surrounding mode.
Through using above technical scheme, guarantee that arc section of thick bamboo and toper section of thick bamboo pile up each section concentricity requirement after the welding to prevent to cut and scratch after the air intake that the welding was accomplished and fan impeller installation, improve the air inlet efficiency of fan simultaneously.
In summary, the invention has the following beneficial effects:
1. the invention divides and processes the arc air inlet, reduces the processing difficulty of the cone arc air inlet, adopts the whole cone assembly to replace the visual inspection or the roundness measurement mode of the box ruler and the correction technology of the large hammer beating in the traditional technology so as to ensure the concentricity requirement, thereby avoiding the friction phenomenon of the fan air inlet and the fan impeller after installation, simultaneously ensuring the concentricity and roundness requirement in the design and manufacturing process through the whole cone assembly and the annular expansion ruler, reducing the gap between the fan impeller and the air inlet, reducing the secondary circulation flow of gas and improving the fan efficiency.
2. The shaping flange component is used for preventing the arc cylinder from deforming after spinning finishing circle, preventing the arc cylinder from changing back to elliptical shape again, and fixing the adjusted round mouth; meanwhile, the structural mode of the shaping flange and the supporting cylinder can adapt to the connecting structure of the arc cylinder round mouth of the non-standard part, and the actual fixing requirement is met.
Drawings
FIG. 1 is a flow chart of a processing process of a conical arc air inlet;
FIG. 2 is a schematic view of a conical arc air inlet structure;
FIG. 3 is a top view of a full cone assembly configuration;
FIG. 4 is a cross-sectional view of the N-N structure of FIG. 3;
FIG. 5 is a cross-sectional view of the M-M direction structure of FIG. 3;
FIG. 6 is a schematic diagram of a gauge adjustment slider structure;
FIG. 7 is a schematic view of a plastic flange assembly and its connection structure;
FIG. 8 is a schematic view of a ring-shaped expansion ruler and a supporting connection structure thereof;
FIG. 9 is a top view of the ring-shaped ruler set;
FIG. 10 is a schematic view of a lifting shaft sleeve and its connection structure;
FIG. 11 is a schematic view of the structure of the telescopic ruler set;
fig. 12 is a schematic diagram of the intake and secondary circulation of the cone-shaped air inlet.
Reference numerals illustrate:
1. a conical assembly; 11. a whole cone; 12. gauge pole setting; 13. a gauge assembly; 131. gauge adjusting slide block; 132. detecting a gauge; 14. a cylinder upright rod; 15. an impact cylinder assembly; 151. a cylinder adjusting slide block; 152. an impact cylinder; 2. an annular expansion ruler; 21. a base; 22. a ruler column; 23. an annular ruler set; 231. lifting shaft sleeve; 232. a telescopic ruler set; 2321. a ruler slide rail; 2322. an expansion ruler; 3. shaping the flange assembly; 31. shaping the flange; 32. and (5) supporting the column.
Detailed Description
In order that the above objects, features and advantages of the invention will be more clearly understood, a further description of the invention will be rendered by reference to the appended 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 otherwise than as described herein, and therefore the present invention is not limited to the specific embodiments of the disclosure that follow.
Example 1: the invention discloses a processing method of a conical arc air inlet of a ventilator, which is shown in figures 1-11 and comprises the following processing steps:
determining the number of segments of the air inlet to be segmented according to the types and the sizes of the existing spinning dies, carrying out modularized segmentation on products, determining segmentation processing parts and size requirements of conical segments and arc segments of the conical arc-shaped air inlet, and drawing segmentation processing drawings through drawing software; if the height of the arc section of the air inlet is larger than that of the spinning machine die, the air inlet is divided into a plurality of sections so as to meet the processing requirement.
B, cutting and blanking by a cutting machine according to the requirements of the drawn segmentation processing drawing; obtaining a conical section material plate and an arc section material plate; and simultaneously cutting to form an air inlet flange for waiting for combined welding.
C, performing cone rolling procedures on the conical section material plate and the arc section material plate by using a three-roller plate rolling machine to form a conical cylinder material roll and an arc cylinder material roll;
d, welding and rounding the conical cylinder material roll and the arc cylinder material roll, finishing the round through the whole conical assembly 1, and adjusting the roundness and concentricity; forming a conical cylinder and an arc-shaped cylinder conical cylinder;
d1, respectively butting an interface of the conical cylinder material roll and an interface of the conical section of the arc cylinder material roll, and welding and connecting by using a welding machine;
d2, continuously rolling the conical cylinder material roll and the arc-shaped cylinder material roll which are welded and connected by a three-roller plate rolling machine to form a rough and whole conical cylinder and a rough and whole arc-shaped cylinder conical cylinder;
d3, after the rough and whole conical cylinder and the rough and whole circular arc cylinder are rolled, in the processes of lifting, storing or moving or because of the non-standard processing requirement, the round mouth of the conical cylinder can be oval and is in an irregular whole round state, concentricity and roundness of a small round port and a large round port of the cylinder body are required to be detected and adjusted, the whole conical assembly 1 is used for finishing the round processing of the rough and whole round conical cylinder and the arc cylinder conical cylinder, and after finishing round processing is carried out through the whole conical assembly 1, the conical cylinder with the concentricity meeting the requirement and the arc cylinder conical cylinder capable of being continuously processed can be formed.
E, spinning the conical cylinder of the arc cylinder, finishing the round through the whole conical assembly 1, and adjusting the roundness and concentricity to form the arc cylinder;
e1, spinning the conical cylinder of the arc cylinder into a thick detected arc cylinder by using a spinning machine, and detecting the radian of the arc cylinder by using a sample plate; although the arc of the arc cylinder detected by the rough detection is attached to the arc detection template, the circular opening of the arc cylinder can also take on an elliptical shape;
e2, therefore, the finishing circle treatment is needed to be carried out on the arc-shaped cylinder which is detected roughly by using the whole cone assembly 1 so as to adjust the circularity and concentricity, and form the arc-shaped cylinder with the concentricity and the circularity meeting the welding requirements.
Because the steel plate of the arc-shaped cylinder after spinning and finishing is resilient, in order to prevent the arc-shaped cylinder from becoming oval again after being detached from the whole cone assembly 1, the arc-shaped cylinder is fixed at the open end which needs to be welded by using the shaping flange assembly 3, and then is detached from the whole cone assembly 1 again.
As shown in fig. 7, the shaping flange assembly 3 includes a shaping flange 31 and a support column 32, wherein the inner diameter of the shaping flange 31 is a series of standard flange inner diameters, and since the circular opening of the arc-shaped cylinder is not necessarily the inner diameter of the standard flange, a gap exists between the inner opening of the arc-shaped cylinder and the inner diameter of the shaping flange, so that the shaping flange 31 is usually connected to the circular opening of the arc-shaped cylinder through the support column 32 by spot welding, thereby connecting the shaping flange 31, the support column 32 and the circular opening of the arc-shaped cylinder to prevent the circular opening from deforming.
Through the operation of the processing steps, the concentricity requirement of the circular opening of each welding section of the conical cylinder and the arc cylinder is respectively ensured, and the whole conical assembly ensures that the ports of each section of conical cylinder and each section of arc cylinder of the conical arc air inlet are all right circular.
And F, sequentially stacking and welding the conical barrels and the arc barrels of each section through an annular expansion ruler 2 to finish manufacturing of the conical arc air inlet.
f1, adjusting the length and height of the annular expansion ruler 2, and sequentially sleeving a conical cylinder and an arc cylinder on the outer side of the annular expansion ruler 2 to stack; ensuring that each section of the conical cylinder and each section of the arc cylinder are concentric;
f2, spot welding and connecting the conical cylinders and the arc cylinders at the joint, and welding and connecting an air inlet flange at the corresponding position of the air inlet; simultaneously, the shaping flange 31 installed in the step E is removed, and welding spots are ground;
and f3, adjusting the length of the annular expansion ruler 2, detaching the annular expansion ruler 2 from the inner cavity of the air inlet, and adopting full-welding at all welding seam positions of the air inlet to finish manufacturing the air inlet.
Example 2: the embodiment discloses a use method of the whole cone assembly 1 and concentricity detection check thereof in the embodiment 1:
as shown in fig. 3 to 6, the whole cone assembly 1 includes a whole cone 11, a gauge pole 12, a gauge assembly 13, a cylinder pole 14, and an impact cylinder assembly 15; the whole cone 11 is of a conical structure, an annular slide ring is arranged at the lower part of the whole cone 11, a gauge upright rod 12 and a cylinder upright rod 14 are slidably arranged on the annular slide ring, the gauge upright rod 12 and the cylinder upright rod 14 are vertically and relatively arranged in parallel, a gauge assembly 13 is slidably arranged on the gauge upright rod 12, the gauge assembly 13 comprises a gauge adjusting slide block 131 and a detection gauge 132, the gauge adjusting slide block 131 is welded together by two vertical shaft sleeves, each shaft sleeve is provided with a threaded through hole and relatively fixed by a set screw, the gauge adjusting slide block 131 can be slidably connected to the gauge upright rod 12, the detection gauge 132 is horizontally arranged on the transverse shaft sleeve, the detection gauge 132 can horizontally slidably move and is fixedly locked by the set screw, the structural design of vertical sliding and transverse movement of the gauge assembly 13 on the upright rod 12 is met, and the detection requirement on concentricity of a cone and an arc cylinder is met, and concentricity of the cylinder to be detected is detected by adjusting the relative length of the detection gauge 132.
An impact cylinder assembly 15 is slidably arranged on the cylinder upright rod 14, and the impact cylinder assembly 15 and the cylinder upright rod 14 are vertically arranged relatively; the impact cylinder assembly 15 includes a cylinder adjustment slider 151 and an impact cylinder 152; the structure of the air cylinder adjusting slide block 151 is consistent with that of the gauge adjusting slide block 131, the air cylinder adjusting slide block 151 is slidably connected to the air cylinder vertical rod 14, the impact air cylinder 152 is fixedly mounted on the air cylinder adjusting slide block 151, and telescopic ends of the impact air cylinder 152 are oppositely arranged along the horizontal direction.
The detection and check method of the whole cone assembly 1 in the embodiment is as follows:
the conical cylinder which needs to be subjected to finishing round treatment is sleeved on the conical outer surface of the whole cone 11, the conical surface of the whole cone 11 is standard and round, when the round mouth of the contact end of the conical cylinder and the whole cone 11 is in an oval structure or a non-round structure, the round mouth of the contact end of the conical cylinder and the contour of the whole cone 11 cannot be tightly attached, the height of the impact cylinder assembly 15 is adjusted, the telescopic end of the impact cylinder 152 and the round mouth of the conical cylinder are at the same horizontal height, the cylinder upright rod 14 is rotated for 360 degrees along the circumferential direction of the whole cone 11 to drive the impact cylinder 152 to work, the round mouth of the lower part of the conical cylinder is subjected to rounding adjustment until the round mouth of the whole cone 11 and the round mouth of the conical cylinder are attached to a seamless state, the round mouth of the lower part is indicated to be finished, the roundness meets the requirement, the gauge assembly 13 is adjusted, the height of the gauge assembly 13 on the gauge upright rod 12 and the relative length of the gauge 132 are adjusted, the end part of the gauge 132 is in contact with the circular opening at the upper part of the conical cylinder, the gauge upright rod 12 is axially rotated, so that the gauge 132 detects the roundness of the circular opening at the upper part of the conical cylinder, if the end part of the gauge 132 can be perfectly attached to the circular opening at the upper part of the conical cylinder, the circular opening at the upper part meets the roundness requirement, if a gap or an interference part exists, the upper circular opening does not meet the roundness requirement, namely, the circular openings at the upper part and the lower part are not concentric, the conical cylinder is reversely sleeved, the impact cylinder assembly 15 is used for impact again, and the roundness is adjusted, and the circular openings at the upper part and the lower part of the conical cylinder are ensured to meet the roundness and concentricity requirements through repeated adjustment of the impact cylinder assembly 15 and the gauge assembly 13.
And in the same way, the steps of roundness and concentricity adjustment of the conical cylinder and the arc cylinder of the whole circle are consistent with those of the conical cylinder, wherein after roundness adjustment of the conical cylinder and the arc cylinder, the upper round mouth and the lower round mouth of the whole circle are relatively fixed through the shaping flange assembly 3, so that deformation of a steel plate of the round mouth is prevented, concentricity is influenced, and the shaping flange assembly 3 is detached after spot welding of each welding section in the later period.
Example 3: the embodiment discloses a ring-shaped expansion ruler 2 in the embodiment 1 and a using method of concentricity detection and check thereof:
as shown in fig. 8-11, the ring-shaped expansion ruler 2 comprises a base 21, a ruler stand 22 and a ring-shaped ruler group 23; a ruler stand column 22 is vertically arranged on the base 21, and a plurality of annular ruler groups 23 are slidably arranged on the ruler stand column 22; the annular ruler set 23 comprises a lifting shaft sleeve 231 and an expansion ruler set 232; the lifting shaft sleeve 231 is slidably sleeved on the rule stand 22, a set screw hole is formed in the lifting shaft sleeve 231, so that the lifting shaft sleeve 231 and the rule stand 22 are relatively fixed through the set screw, a plurality of groups of annular rule groups 23 are circumferentially arranged on the shaft body of the lifting shaft sleeve 231 in a surrounding mode, the structure of each group of annular rule groups 232 is consistent, the lifting shaft sleeve 231 is fixedly connected with the lifting shaft sleeve 231, the telescopic rule 2322 is slidably connected with the rule sliding rail 2321, scales are arranged on the telescopic rule 2322, and the set screw hole is formed in the rule sliding rail 2321 to fix the telescopic rule through the set screw.
The working principle of the annular expansion ruler 2 of the embodiment is as follows: the number of the annular ruler groups 23 can be one more than that of the segments of the air inlet in a normal state, the conical barrel and the arc barrel segments are stacked and sleeved on the outer side of the annular expansion ruler 2 in sequence, the relative distance of the annular ruler groups 23 on the ruler upright posts 22 and the length distance of the expansion ruler groups 232 are adjusted and fixed, so that the end parts of the expansion ruler groups 232 in the annular ruler groups 23 of each group are exactly positioned at the gap positions of the two segments to be welded, and the circles of each segment of the air inlet are still concentric after welding; and (3) performing spot welding on the circular rings of the segments of the air inlet, removing the shaping flange, simultaneously performing spot welding on the shaping flange and the air inlet flange, finally performing full-welding fixation on all welding seams of the conical arc-shaped air inlet, taking out the annular expansion ruler 2, and completing the manufacturing of the air inlet.
As shown in fig. 12, the impeller of the fan is a rotating part, the air inlet is a static part, so that the gap between the air inlet and the impeller is always a gap, and because of the existence of the gap, when the air flowing out from the outlet of the impeller enters the shell, the air does not flow out from the air outlet of the shell immediately, but flows into the impeller again from the sleeve and the gap of the impeller and the air inlet, so that the air is circulated for the second time, the efficiency of the fan is reduced, and the size of the gap delta of the fan is reduced as much as possible in the manufacturing process of the fan; the test shows that: the ratio delta of the sleeve opening delta to the impeller diameter D is reduced from 0.5 to 0.05, so that the efficiency of the ventilator can be improved by 3% -4%. The smaller the fan shroud delta size, the wind D100100
The higher the machine efficiency. According to the processing method of the conical arc air inlet of the ventilator, the roundness and concentricity of the conical cylinder and each section of the arc cylinder in the processing process are adjusted and checked through the whole conical assembly 1 and the annular expansion ruler 2, so that the concentricity and roundness requirement of the air inlet after sectional processing are guaranteed, the size of the arc section circular opening is effectively controlled and improved, the size of a fan sleeve opening delta position can be reduced, the air inlet efficiency of the fan is improved, the secondary circulation of gas is avoided, the concentricity is guaranteed, and meanwhile, the contact friction between the air inlet and a fan impeller after installation is avoided.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification and equivalent changes to the above-mentioned embodiments according to the technical substance of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (7)
1. The processing method of the conical arc air inlet of the ventilator is characterized by comprising the following processing steps:
a, product modularization segmentation is carried out, segmentation processing parts and size requirements of a conical section and an arc section of a conical arc air inlet are determined, and segmentation processing drawings are drawn;
b, cutting and blanking according to the requirements of the drawn cutting and processing drawing; obtaining a conical section material plate and an arc section material plate;
c, rolling the conical section material plate and the arc section material plate to form a conical barrel material roll and an arc barrel material roll;
d, welding and rounding the conical cylinder material roll and the arc cylinder material roll, finishing the round through the whole conical assembly (1), and adjusting the circularity and concentricity; forming a conical cylinder and an arc-shaped cylinder conical cylinder;
e, spinning the conical cylinder of the arc cylinder, finishing the round by the whole conical assembly (1), and adjusting the roundness and concentricity to form the arc cylinder;
f, sequentially stacking and welding the conical barrels and the arc barrels of each section through an annular expansion ruler (2) to finish manufacturing of the conical arc air inlet;
the whole cone assembly (1) comprises a whole cone (11), a gauge upright (12), a gauge assembly (13), a cylinder upright (14) and an impact cylinder assembly (15); a gauge upright rod (12) and a cylinder upright rod (14) are slidably arranged on the ring of the whole cone (11); a gauge assembly (13) is slidably mounted on the gauge upright (12), and the gauge assembly (13) and the gauge upright (12) are oppositely and vertically arranged; an impact air cylinder assembly (15) is slidably mounted on the air cylinder vertical rod (14), and the impact air cylinder assembly (15) and the air cylinder vertical rod (14) are vertically arranged relatively;
the gauge assembly (13) comprises a gauge adjusting slide block (131) and a detection gauge (132), the gauge adjusting slide block (131) is connected to the gauge upright (12) in a sliding mode, and the detection gauge (132) is connected with the gauge adjusting slide block (131) in a sliding mode along the horizontal direction;
the impact cylinder assembly (15) comprises a cylinder adjusting slide block (151) and an impact cylinder (152); the cylinder adjusting slide block (151) is slidably connected to the cylinder vertical rod (14), the cylinder adjusting slide block (151) is fixedly provided with an impact cylinder (152), and the telescopic end of the impact cylinder (152) is arranged in the horizontal direction.
2. The method for machining a conical arc-shaped air inlet of a ventilator according to claim 1, wherein the specific construction step of the step D comprises the following steps:
d1, respectively butting an interface of the conical cylinder material roll and an interface of the conical section of the arc cylinder material roll, and welding and connecting by using a welding machine;
d2, rolling the conical cylinder material roll and the arc-shaped cylinder material roll which are welded and connected by a three-roller plate rolling machine to form a rough and whole conical cylinder and a rough and whole arc-shaped cylinder conical cylinder;
d3, finishing round treatment is carried out on the conical cylinder and the arc-shaped cylindrical conical cylinder after rough rounding by using the whole conical assembly (1) to form the conical cylinder and the arc-shaped cylindrical conical cylinder.
3. The method for processing the conical arc air inlet of the ventilator according to claim 1, wherein the specific construction step of the step E comprises the following steps:
e1, spinning the conical cylinder of the arc cylinder into a thick detected arc cylinder by using a spinning machine, and detecting the radian of the arc cylinder;
and e2, finishing the circular arc tube for coarse detection by using the whole cone assembly (1), and adjusting the circularity and concentricity to form the arc tube.
4. The method for machining a conical arc-shaped air inlet of a ventilator according to claim 1, wherein the specific construction step of the step F comprises the following steps:
f1, adjusting the length and height of the annular expansion ruler (2), and sequentially sleeving a conical cylinder and an arc cylinder on the outer side of the annular expansion ruler to stack;
f2, spot welding and connecting the cone-shaped cylinders and the arc-shaped cylinders which are in contact with each other, and welding and connecting an air inlet flange at an air inlet;
and f3, adopting full-scale welding at all welding line positions of the air inlet to finish manufacturing the air inlet.
5. A method for processing a conical arc air inlet of a ventilator according to claim 3, wherein: after step e2, fixing the opening end to be connected of the arc-shaped cylinder by using a shaping flange assembly (3), and then detaching the arc-shaped cylinder from the whole cone assembly;
the shaping flange assembly (3) comprises a shaping flange (31) and a supporting column (32), and the shaping flange (31) is connected to the round opening of the arc-shaped cylinder through the supporting column (32) in a welding mode.
6. A method for manufacturing a conical arc air inlet of a ventilator according to claim 1 or 4, wherein: the annular expansion ruler (2) comprises a base (21), a ruler upright post (22) and an annular ruler group (23); the base (21) is vertically provided with a ruler stand column (22), and an annular ruler group (23) is arranged on the ruler stand column (22) in a sliding mode.
7. The method for processing the conical arc air inlet of the ventilator according to claim 6, wherein the method comprises the following steps: the annular ruler set (23) comprises a lifting shaft sleeve (231) and an expansion ruler set (232); the lifting shaft sleeve (231) is slidably sleeved on the ruler stand column (22), and a plurality of expansion ruler groups (232) are arranged on the side portion of the lifting shaft sleeve (231) in a surrounding mode.
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