CN115351512A - Machining method for conical arc-shaped air inlet of ventilator - Google Patents
Machining method for conical arc-shaped air inlet of ventilator Download PDFInfo
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- 238000003754 machining Methods 0.000 title claims description 11
- 239000000463 material Substances 0.000 claims abstract description 39
- 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 13
- 238000003672 processing method Methods 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims description 38
- 238000007493 shaping process Methods 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 21
- 238000005096 rolling process Methods 0.000 claims description 11
- 230000011218 segmentation Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 12
- 235000017491 Bambusa tulda Nutrition 0.000 description 12
- 241001330002 Bambuseae Species 0.000 description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 12
- 239000011425 bamboo Substances 0.000 description 12
- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
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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
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- 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 a conical arc-shaped air inlet of a ventilator, which relates to the technical field of fan manufacturing and comprises the following processing steps that products are divided in a modularized mode, cutting and blanking are carried out, corresponding module plates are formed, material plates roll up cones to form material cylinders, and the material cylinders are welded to form conical cylinders and arc-shaped cylinder conical cylinders through the processes of rounding roughly and finishing circles; the arc-shaped cylinder is formed into the arc-shaped cylinder by spinning, roughly rounding and finishing the arc-shaped cylinder, and then all the cone-shaped cylinder modules and the arc-shaped cylinder modules are welded to form the cone-shaped arc-shaped air inlet.
Description
Technical Field
The invention relates to the technical field of fan manufacturing, in particular to a method for machining a conical arc-shaped air inlet of a fan.
Background
The air inlet of the fan is an air inlet device which ensures that airflow can uniformly fill the inlet of the impeller and the flow loss of the airflow is minimum; the air inlet of the common centrifugal ventilator has various structures such as a cylinder, a cone, an arc cone and the like. The cylindrical air inlet has the largest flow loss, and the air flow is guided to enter the impeller in the worst flow state, but the processing technology is convenient. Compared with a cylindrical air inlet, the flow loss of the conical air inlet is reduced, 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 airflow to enter the impeller, a formed vortex area is much smaller than that of the conical air inlet, but the air inlet effect is still inferior to that of the conical air inlet. The conical arc-shaped air inlet is used for saving electricity most economically, so that the conical arc-shaped air inlet is widely applied to modern centrifugal ventilators.
However, the machining process of the conical arc-shaped air inlet is the most complicated, the air duct of the conical arc-shaped air inlet consists of a conical section and an arc section, the manufacturing process respectively comprises the processes of cutting, blanking, plate rolling, tube forming, welding, shaping and the like, the conical tube and the arc tube after being welded together may be elliptical, the original mode usually needs a worker to visually observe or measure the roundness of the conical tube by a box ruler, usually the worker smashes an elliptical workpiece by a hammer to enable the workpiece to be close to a circular shape, but each section of the air inlet is difficult to be in a perfect circular shape. Then the shaped conical cylinder and the arc-shaped cylinder are welded together, the concentricity is also visually measured by naked eyes, so that each section of the air inlet is not concentric, and the air inlet and the fan impeller have a friction phenomenon when the fan runs; therefore, there is no good processing method for ensuring the concentricity of the air inlet.
Disclosure of Invention
In order to solve the technical problems that the machining process of the conical arc-shaped air inlet is difficult, the concentricity of each section of the air inlet is difficult to ensure and the fan impeller and the air inlet have friction, the invention provides a machining method of the conical arc-shaped air inlet of the ventilator.
The technical problem of the invention is realized by the following technical scheme: a processing method of a conical arc-shaped air inlet of a ventilator comprises the following processing steps:
a, modularly dividing a product, determining a conical section of a conical arc-shaped air inlet and a divided processing part and size requirements of the arc-shaped section, and drawing a divided processing drawing;
b, cutting and blanking according to the requirements of the drawn segmentation 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 barrel material roll and the arc barrel material roll, and performing fine rounding treatment through a rounding cone assembly to adjust the circularity and concentricity; forming a conical cylinder and an arc cylinder conical cylinder;
e, spinning the conical cylinder of the arc cylinder, performing fine rounding treatment through the rounding cone assembly, and adjusting the roundness and the concentricity to form the arc cylinder;
and F, sequentially stacking and welding the conical cylinder and the arc cylinder of each section through an annular telescopic ruler to complete the manufacture of the conical arc air inlet.
Through using above technical scheme, cut apart the processing with the arc air intake, the processing degree of difficulty of awl arc air intake has been reduced, for the concentricity requirement of the toper section of thick bamboo and the arc section of thick bamboo after guaranteeing to cut apart, adopt whole circular cone subassembly to replace range estimation or box chi among the traditional handicraft circularity measuring method and the correction technology that the sledge hammer was beaten and is pounded, with guaranteeing the concentricity requirement, thereby avoid the friction phenomenon behind fan air intake and the fan wheel installation, simultaneously through whole circular cone subassembly and annular telescopic ruler with the concentricity and the circularity requirement of guaranteeing the design manufacturing process, the clearance between fan wheel and the air intake has been reduced, reduce gaseous secondary circulation flow, improve fan efficiency.
Preferably, the specific construction steps of step D include:
d1, respectively butting the interface of the conical drum material roll and the conical section interface of the arc drum material roll, and welding by using a welding machine;
d2, rolling the welded and connected conical cylinder material roll and arc cylinder material roll by a three-roller plate rolling machine to form a rough round conical cylinder and a rough round arc cylinder conical cylinder;
d3, using the rounding cone assembly to carry out fine rounding treatment on the conical cylinder and the arc-shaped cylinder conical cylinder after the rough rounding to form the conical cylinder and the arc-shaped cylinder conical cylinder.
Preferably, the specific construction steps of step E include:
e1, spinning the conical cylinder of the arc cylinder into the arc cylinder for rough detection by using a spinning machine, and detecting the radian of the arc cylinder;
e2, using the rounding cone assembly to carry out fine rounding processing on the arc-shaped cylinder for coarse detection, and adjusting the roundness and the concentricity to form the arc-shaped cylinder.
Preferably, the specific construction steps of step F include:
f1, adjusting the length and height of the annular telescopic ruler, and sequentially sleeving the conical cylinder and the arc cylinder on the outer side of the annular telescopic ruler to stack;
f2, spot welding and connecting the conical cylinders and the arc cylinders which are in contact with each other, and welding and connecting an air inlet flange at the air inlet;
and f3, adopting full-length welding at all welding seam positions of the air inlet to finish the manufacture of the air inlet.
Preferably, after the step e2, the method further comprises the step of fixing the opening end of the arc-shaped cylinder, which needs to be connected, by using a reshaping flange assembly, and then detaching the opening end from the full cone assembly;
the shaping flange assembly comprises a shaping flange and a support column, and the shaping flange is connected to the round opening of the arc-shaped cylinder through the support column in a welded mode.
By adopting the technical scheme, the shaping flange assembly is used for preventing the arc-shaped cylinder from deforming after spinning and finishing the circle, preventing the arc-shaped cylinder from changing back to the oval shape again and fixing the adjusted round opening; meanwhile, the structural mode of the shaping flange and the supporting cylinder can be adapted to the connection structure of the arc-shaped cylinder round opening of the nonstandard part, and the actual fixing requirement is met.
Preferably, the whole cone assembly comprises a whole cone, a gauge vertical rod, a gauge assembly, a cylinder vertical rod and an impact cylinder assembly; a gauge upright rod and a cylinder upright rod are slidably mounted in the annular direction of the whole cone; the gauge vertical rod is provided with a gauge component in a sliding mode, and the gauge component and the gauge vertical rod are arranged vertically and oppositely; and the cylinder upright stanchion is provided with an impact cylinder component in a sliding way, and the impact cylinder component and the cylinder upright stanchion are arranged vertically relatively.
Preferably, the gauge assembly comprises a gauge adjusting slider and a checking gauge, the gauge adjusting slider is slidably connected to the gauge upright rod, and the checking gauge is slidably connected to the gauge adjusting slider along the horizontal direction.
Preferably, the impact cylinder assembly comprises a cylinder adjusting slide block and an impact cylinder; the cylinder adjusting sliding block is connected with the cylinder vertical rod in a sliding mode, an impact cylinder is fixedly mounted on the cylinder adjusting sliding block, and the telescopic end of the impact cylinder is arranged in the horizontal direction.
Preferably, the annular telescopic ruler comprises a base, a ruler stand column and an annular ruler group; the base is vertically provided with a ruler stand column, and an annular ruler group is arranged on the ruler stand column in a sliding mode.
Preferably, the annular ruler set comprises a lifting shaft sleeve and a telescopic ruler set; the lifting shaft sleeve is slidably sleeved on the ruler stand column, and a plurality of telescopic ruler groups are arranged on the side portion of the lifting shaft sleeve in a surrounding mode.
By using the technical scheme, the concentricity requirement of each section of the arc-shaped cylinder and the conical cylinder after stacking and welding is ensured, so that the scraping and rubbing of the welded air inlet and the fan impeller after installation are prevented, and the air inlet efficiency of the fan is improved.
In conclusion, the invention has the following beneficial effects:
1. the invention cuts the arc-shaped air inlet, reduces the processing difficulty of the conical arc-shaped air inlet, and adopts the whole cone component to replace the visual measurement mode of a box ruler or the correction process of hammering in a hammer in the traditional process to ensure the concentricity requirement in order to ensure the concentricity requirement of the cut conical cylinder and the arc-shaped cylinder, thereby avoiding the friction phenomenon after the fan air inlet and the fan impeller are installed, and simultaneously ensures the concentricity and the roundness requirement in the design and manufacturing process through the whole cone component and the annular telescopic ruler, thereby 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 assembly is used for preventing the arc-shaped cylinder from deforming after spinning and rounding, preventing the arc-shaped cylinder from changing into an elliptical shape again, and fixing the adjusted round opening; meanwhile, the structural mode of the shaping flange and the supporting cylinder can be adapted to the connecting structure of the arc-shaped cylinder round opening of the non-standard part, and the actual fixing requirement is met.
Drawings
FIG. 1 is a flow chart of a process for machining a conical arc-shaped air inlet;
FIG. 2 is a schematic view of a conical arc-shaped air inlet;
FIG. 3 is a top view of the full cone assembly structure;
FIG. 4 is a cross-sectional view of the structure of FIG. 3 taken in the direction N-N;
FIG. 5 is a structural sectional view taken along the direction M-M of FIG. 3;
FIG. 6 is a schematic view of a gauge adjustment slide;
FIG. 7 is a schematic view of a reforming flange assembly and its connection structure;
FIG. 8 is a schematic view of the annular telescopic ruler and its supporting connection structure;
FIG. 9 is a top view of the annular ruler set configuration;
FIG. 10 is a schematic view of a lifting sleeve and its connection structure;
FIG. 11 is a schematic view of the telescopic ruler set;
fig. 12 is a schematic diagram of air intake and secondary circulation of a conical arc-shaped air inlet.
Description of reference numerals:
1. a full cone assembly; 11. shaping a cone; 12. a gauge vertical rod; 13. a gauge assembly; 131. a gauge adjusting slide block; 132. detecting a gauge; 14. a cylinder upright rod; 15. an impingement cylinder assembly; 151. a cylinder adjusting slide block; 152. an impact cylinder; 2. an annular telescopic ruler; 21. a base; 22. a ruler column; 23. an annular ruler group; 231. a lifting shaft sleeve; 232. a telescopic ruler group; 2321. a ruler slide rail; 2322. a telescopic ruler; 3. a reshaping flange assembly; 31. shaping a flange; 32. and (7) supporting the column.
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 discloses a method for processing a conical arc-shaped air inlet of a ventilator, which comprises the following processing steps as shown in figures 1-11:
a, determining the number of segments of an air inlet to be segmented according to the type and the size of the conventional spinning die, performing product modular segmentation, determining the segmented parts and the size requirements of a conical segment and an arc segment of a conical arc-shaped air inlet, and drawing a segmented processing drawing through drawing software; if the height of the arc-shaped 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 through 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, carrying out a cone rolling procedure on the conical section material plate and the arc section material plate by using a three-roller plate rolling machine to form a conical barrel material roll and an arc barrel material roll;
d, welding and rounding the conical barrel material roll and the arc barrel material roll, and performing fine rounding treatment through the rounding cone assembly 1 to adjust the circularity and the concentricity; forming a conical cylinder and an arc cylinder conical cylinder;
d1, respectively butting the interface of the conical drum material roll and the conical section interface of the arc drum material roll, and welding by using a welding machine;
d2, continuously rolling the welded and connected conical cylinder material roll and arc cylinder material roll by a three-roller plate rolling machine to form a rough round conical cylinder and a rough round arc cylinder conical cylinder;
d3, after thick whole circular cone section of thick bamboo and thick whole circular arc section of thick bamboo cone section of thick bamboo edge rolling are accomplished, in the handling, deposit or remove the in-process such as or because of processing nonstandard requirement, the round mouth of a cone section of thick bamboo can present the ellipse, for irregular whole round state, need carry out the detection adjustment of concentricity and circularity to the small circle port and the big circle port of barrel, use whole circular cone subassembly 1 to carry out the perfect circle processing to the cone section of thick bamboo and the arc section of thick bamboo cone section of thick bamboo behind the thick whole circle, after carrying out the perfect circle processing through whole circular cone subassembly 1, can form the cone section of thick bamboo that the concentricity meets the requirements and can continue the arc section of thick bamboo cone section of thick bamboo of processing.
E, spinning the conical cylinder of the arc cylinder, performing fine rounding treatment through the rounding cone assembly 1, and adjusting the roundness and the concentricity to form the arc cylinder;
e1, spinning the conical cylinder of the arc cylinder into a roughly detected arc cylinder by using a spinning machine, and detecting the radian of the arc cylinder by using a sample plate detection piece; although the radian of the arc-shaped cylinder for rough detection is fit with the radian detection sample plate, the circular opening of the arc-shaped cylinder may also be in an oval shape;
e2, therefore, the complete cone component 1 is required to be used for carrying out fine circle processing on the arc-shaped cylinder for coarse detection so as to adjust the circularity and the 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 circle finishing has resilience, in order to prevent the arc-shaped cylinder from becoming oval after being detached from the whole cone assembly 1, the open end of the arc-shaped cylinder, which needs to be welded and connected, is fixed by using the shaping flange assembly 3 and then 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 pillar 32, the inner diameter of the shaping flange 31 is a series of standard flange inner diameters, and since the size of the circular opening of the arc cylinder is not necessarily the inner diameter of the standard flange, there is a gap between the inner opening of the arc cylinder and the inner diameter of the shaping flange, the shaping flange 31 is usually connected to the circular opening of the arc cylinder by the support pillar 32 through spot welding, so as to connect the shaping flange 31, the support pillar 32 and the circular opening of the arc cylinder, thereby preventing the circular opening from deforming.
Through the processing steps, the concentricity requirements of the circular openings of the welding sections of the conical cylinder and the arc cylinder are respectively guaranteed, and the whole circular cone assembly guarantees that the port of each section of conical cylinder and each section of arc cylinder of the conical arc air inlet are in a perfect circle shape.
F, stacking the conical cylinders and the arc-shaped cylinders of all the sections in sequence through the annular telescopic ruler 2, and welding to connect the conical cylinders and the arc-shaped cylinders to complete the manufacture of the conical arc-shaped air inlets.
f1, adjusting the length and height of the annular telescopic ruler 2, and sequentially sleeving the conical cylinder and the arc cylinder on the outer side of the annular telescopic ruler 2 to stack; ensuring that all sections of the conical cylinder and the arc cylinder are concentric;
f2, spot welding and connecting each section of conical cylinder and the arc-shaped cylinder at the joint, and welding and connecting an air inlet flange at the corresponding position of the air inlet; meanwhile, the shaping flange 31 installed in the step E is removed, and welding points are ground;
and f3, adjusting the length of the annular telescopic ruler 2, disassembling the annular telescopic ruler 2 from the inner cavity of the air inlet, and performing full-length welding on all welding line positions of the air inlet to finish the manufacturing of the air inlet.
Example 2: the embodiment discloses the whole cone assembly 1 and the use method for detecting and checking the concentricity thereof in the embodiment 1:
as shown in fig. 3-6, the full cone assembly 1 comprises a full cone 11, a gauge rod 12, a gauge assembly 13, a cylinder rod 14 and an impact cylinder assembly 15; the whole cone 11 is a cone structure, an annular sliding ring is arranged at the lower part of the whole cone 11, a gauge upright rod 12 and an air cylinder upright rod 14 are arranged on the annular sliding ring in a sliding mode, the gauge upright rod 12 and the air cylinder upright rod 14 are arranged in a vertical relative parallel mode, a gauge assembly 13 is arranged on the gauge upright rod 12 in a sliding mode, the gauge assembly 13 comprises a gauge adjusting sliding block 131 and a detection gauge 132, the gauge adjusting sliding block 131 is welded together through two vertical shaft sleeves, a threaded through hole is formed in each shaft sleeve, and relative fixing is achieved through a fastening screw, so that the gauge adjusting sliding block 131 can be connected to the gauge upright rod 12 in a sliding mode, meanwhile, the detection gauge 132 is arranged on the shaft sleeve in a transverse direction in the horizontal direction, the detection gauge 132 can move in a sliding mode in the horizontal direction and is locked and fixed through the fastening screw, the structural design of vertical sliding and transverse moving of the gauge assembly 13 on the gauge upright rod 12 meets the detection requirement for concentricity of a cone and an arc cylinder, and the concentricity and roundness of the cylinder to be detected by adjusting the relative length of the detection gauge 132.
An impact air cylinder assembly 15 is slidably mounted on the air cylinder upright rod 14, and the impact air cylinder assembly 15 and the air cylinder upright rod 14 are arranged vertically and oppositely; the impact cylinder assembly 15 includes a cylinder adjustment slider 151 and an impact cylinder 152; the structure of the cylinder adjusting slide block 151 is consistent with that of the gauge adjusting slide block 131, the cylinder adjusting slide block 151 is slidably connected to the cylinder upright rod 14, an impact cylinder 152 is fixedly mounted on the cylinder adjusting slide block 151, and the telescopic end of the impact cylinder 152 is arranged oppositely along the horizontal direction.
A detection and check method of the full cone assembly 1 of the present embodiment is as follows:
the conical barrel which needs to be subjected to the fine circle processing is sleeved on the conical outer surface of the whole cone 11, the conical surface of the whole cone 11 is in a standard regular circle shape, if the round mouth of the contact end of the conical barrel and the whole cone 11 is in an elliptical structure or a non-regular circle structure, the round mouth of the contact end of the conical barrel and the whole cone 11 cannot be tightly attached to the outline of the whole cone 11, the height of the impact air cylinder assembly 15 is adjusted, the telescopic end of the impact air cylinder 152 and the round mouth of the conical barrel are at the same horizontal height, the air cylinder upright rod 14 is rotated 360 degrees along the circumferential direction of the whole cone 11 to drive the impact air cylinder 152 to work, the whole circle adjustment is carried out on the round mouth at the lower part of the conical barrel until the round mouth of the whole cone 11 and the round mouth of the conical barrel are attached to a seamless state, the round mouth at the lower part is completely adjusted, the round degree meets the requirement, and then the gauge assembly 13 is adjusted, the height of the gauge component 13 on the gauge upright rod 12 and the relative length of the detection gauge 132 are adjusted, the end part of the detection gauge 132 is contacted with the round mouth at the upper part of the conical cylinder, the gauge upright rod 12 is axially rotated, so that the detection gauge 132 detects the roundness of the round mouth at the upper part of the conical cylinder, if the end part of the detection gauge 132 can perfectly fit the round mouth at the upper part of the conical cylinder, the round mouth at the upper part meets the roundness requirement, if a gap or an interference part exists, the upper round mouth does not meet the roundness requirement, namely, the round mouths of the upper part and the lower part are not concentric, the conical cylinder is reversely sleeved, the impact air cylinder component 15 is used again for impact to adjust the roundness, and the round mouths of the upper part and the lower part of the conical cylinder meet the requirements of roundness and concentricity through repeated adjustment of the impact air cylinder component 15 and the gauge component 13.
In a similar way, the roundness and concentricity adjusting steps of the arc-shaped cylinder conical cylinder and the arc-shaped cylinder which need to be rounded are consistent with those of the cone-shaped cylinder, wherein after the roundness adjusting is carried out on the cone-shaped cylinder and the arc-shaped cylinder, the upper and lower circular openings of the arc-shaped cylinder and the arc-shaped cylinder are respectively fixed relatively through the shaping flange component 3 so as to prevent the deformation of the steel plate of the circular openings and influence the concentricity, and the shaping flange component 3 is detached after each welding section spot welding in the later period.
Example 3: the embodiment discloses the annular telescopic ruler 2 and a using method for detecting and checking the concentricity thereof in the embodiment 1:
as shown in fig. 8 to 11, the annular telescopic rule 2 includes a base 21, a rule pillar 22 and an annular rule group 23; a ruler upright column 22 is vertically arranged on the base 21, and a plurality of annular ruler groups 23 are arranged on the ruler upright column 22 in a sliding manner; the annular ruler group 23 comprises a lifting shaft sleeve 231 and a telescopic ruler group 232; lifting shaft sleeve 231 slip cover is established on chi stand 22, the set screw hole has been seted up on lifting shaft sleeve 231, thereby it realizes relatively fixed with chi stand 22 to be lifting shaft sleeve 231 through the set screw, circumference is encircleed on lifting shaft sleeve 231's the axle body and is provided with a plurality of groups annular chi group 23, the structure of every group annular chi group 232 is unanimous, including chi slide rail 2321 and telescopic ruler 2322, chi slide rail 2321 fixed connection lifting shaft sleeve 231, sliding connection has telescopic ruler 2322 on chi slide rail 2321, be provided with the scale on the telescopic ruler 2322, set screw hole has been seted up on the chi slide rail 2321 simultaneously in order to pass through the fixed telescopic ruler of set screw.
The working principle of the annular telescopic rule 2 of the embodiment is as follows: the ruler vertical column 22 is sleeved with a plurality of groups of annular ruler groups 23, the number of the annular ruler groups 23 can be one group more than the number of the segmentation sections of the air inlet in a normal state, the outer side of the annular telescopic ruler 2 is sequentially stacked and sleeved with a conical cylinder and an arc cylinder section, the relative distance of the annular ruler groups 23 on the ruler vertical column 22 and the length distance of the telescopic ruler groups 232 are adjusted and fixed, the end part of the telescopic ruler group 232 in each group of annular ruler groups 23 is just positioned at the position of a gap needing to be welded of the two segmentation sections, and therefore the circular ring of each segmentation section of the air inlet is ensured to be concentric after being welded; and (3) performing spot welding on the ring of the segmentation section of the air inlet, detaching the shaping flange, connecting the shaping flange with the air inlet flange in a spot welding manner, finally, welding and fixing all welding seams of the conical arc-shaped air inlet in a full-welding manner, and taking out the annular telescopic ruler 2 to finish the manufacture of the air inlet.
As shown in fig. 12, the impeller of the fan is a rotating part, and the air inlet is a stationary part, so that a gap between the air inlet and a cuff of the impeller is required to be a gap, and due to the presence of the cuff, when the air flowing out of the outlet of the impeller enters the casing, the air does not immediately flow out of the outlet of the casing, but enters the impeller again from the cuff and the gap of the impeller and the air inlet, so that the air is circulated for the second time, and the efficiency of the fan is reduced, so that the size of the cuff δ of the fan is reduced as much as possible during the manufacturing process of the fan; the test shows that: the ratio delta of the sleeve opening delta to the diameter D of the impeller is reduced from 0.5 to 0.05, so that the efficiency of the ventilator can be improved by 3-4%. The smaller the delta size of the fan sleeve opening is, the smaller the wind D100100
The higher the machine efficiency. According to the processing method of the conical arc-shaped air inlet of the ventilator, the roundness and the concentricity during the processing of each section of the conical cylinder and the arc-shaped cylinder are adjusted and checked through the whole conical assembly 1 and the annular telescopic ruler 2, the concentricity and the roundness requirements of the air inlet after sectional processing are ensured, the size of the circular opening of the arc-shaped section is effectively controlled and improved, the size of the sleeve opening delta of the ventilator can be reduced, the air inlet efficiency of the ventilator is improved, secondary circulation of gas is avoided, the concentricity is ensured, and contact friction between the air inlet and a fan impeller after installation is avoided.
While the invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (10)
1. A machining method for a conical arc-shaped air inlet of a ventilator is characterized by comprising the following machining steps:
a, modularly dividing a product, determining a conical section of a conical arc-shaped air inlet and a divided processing part and size requirements of the arc-shaped section, and drawing a divided processing drawing;
b, cutting and blanking according to the requirements of the drawn segmentation 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 barrel material roll and the arc barrel material roll, and performing fine rounding treatment through the whole cone assembly (1) to adjust the circularity and the concentricity; forming a conical cylinder and an arc cylinder conical cylinder;
e, spinning the conical cylinder of the arc cylinder, performing fine rounding treatment through the rounding cone assembly (1), and adjusting the roundness and the concentricity to form the arc cylinder;
and F, sequentially stacking and welding the conical cylinder and the arc cylinder of each section through the annular telescopic ruler (2) to complete the manufacture of the conical arc air inlet.
2. The processing method for the conical arc-shaped air inlet of the ventilator as claimed in claim 1, wherein the specific construction steps of the step D comprise:
d1, respectively butting the interface of the conical drum material roll and the conical section interface of the arc drum material roll, and welding by using a welding machine;
d2, the cone-shaped cylindrical material roll and the arc-shaped cylindrical material roll which are welded and connected are rolled into a circle by a three-roller plate rolling machine to form a rough whole cone-shaped cylinder and a rough whole arc-shaped cylinder cone;
d3, using the rounding cone assembly (1) to carry out finish rounding treatment on the roughly rounded conical cylinder and the arc-shaped cylinder conical cylinder to form the conical cylinder and the arc-shaped cylinder conical cylinder.
3. The machining method for the conical arc-shaped air inlet of the ventilator as claimed in 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 the arc cylinder for rough detection by using a spinning machine, and detecting the radian of the arc cylinder;
e2, using the rounding cone assembly (1) to carry out fine rounding processing on the arc-shaped cylinder for coarse detection, and adjusting the roundness and the concentricity to form the arc-shaped cylinder.
4. The machining method for the conical arc-shaped air inlet of the ventilator as claimed in claim 1, wherein the specific construction steps of the step F comprise:
f1, adjusting the length and height of the annular telescopic ruler (2), and sequentially sleeving the conical cylinder and the arc cylinder on the outer side of the annular telescopic ruler to stack;
f2, spot welding and connecting the conical cylinders and the arc cylinders which are in contact with each other, and welding and connecting an air inlet flange at the air inlet;
and f3, adopting full-length welding at all the welding line positions of the air inlet to finish the manufacturing of the air inlet.
5. The processing method of the conical arc-shaped air inlet of the ventilator according to the claim 3, is characterized in that: fixing the opening end of the arc-shaped cylinder to be connected by using a shaping flange assembly (3) after the step e2, and then detaching the arc-shaped cylinder from the shaping cone assembly;
the reshaping flange assembly (3) comprises a reshaping flange (31) and a supporting column (32), and the reshaping flange (31) is welded at the round opening of the arc-shaped cylinder through the supporting column (32).
6. The method for processing the conical arc-shaped air inlet of the ventilator according to the claim 1 or 3, is characterized in that: the whole cone assembly (1) comprises a whole cone (11), a gauge upright rod (12), a gauge assembly (13), a cylinder upright rod (14) and an impact cylinder assembly (15); a gauge upright rod (12) and an air cylinder upright rod (14) are slidably mounted in the annular direction of the whole cone (11); a gauge component (13) is slidably mounted on the gauge vertical rod (12), and the gauge component (13) and the gauge vertical rod (12) are arranged vertically and oppositely; and the cylinder upright stanchion (14) is provided with an impact cylinder component (15) in a sliding way, and the impact cylinder component (15) and the cylinder upright stanchion (14) are arranged vertically relatively.
7. The processing method of the conical arc-shaped air inlet of the ventilator as claimed in claim 6, wherein the processing method comprises the following steps: the gauge assembly (13) comprises a gauge adjusting sliding block (131) and a detection gauge (132), the gauge adjusting sliding block (131) is connected with the gauge vertical rod (12) in a sliding mode, and the detection gauge (132) is connected with the gauge adjusting sliding block (131) in a sliding mode in the horizontal direction.
8. The processing method of the conical arc-shaped air inlet of the ventilator as claimed in claim 6, wherein the processing method comprises the following steps: the impact cylinder assembly (15) comprises a cylinder adjusting slide block (151) and an impact cylinder (152); cylinder adjusting sliding block (151) sliding connection in cylinder pole setting (14), fixed mounting has impact cylinder (152) on cylinder adjusting sliding block (151), the flexible end of impact cylinder (152) sets up along the horizontal direction.
9. The method for processing the conical arc-shaped air inlet of the ventilator according to the claim 1 or 4, is characterized in that: the annular telescopic ruler (2) comprises a base (21), a ruler stand column (22) and an annular ruler group (23); the vertical chi stand (22) of installing on base (21), slide on chi stand (22) and be provided with annular chi group (23).
10. The method for processing the conical arc-shaped air inlet of the ventilator according to the claim 9, is characterized in that: the annular ruler set (23) comprises a lifting shaft sleeve (231) and a telescopic ruler set (232); the lifting shaft sleeve (231) is slidably sleeved on the ruler stand column (22), and a plurality of telescopic ruler groups (233) are arranged on the side portion of the lifting shaft sleeve (231) in a surrounding mode.
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