CN116038258A - Hole drilling method for large motor fan installation - Google Patents

Hole drilling method for large motor fan installation Download PDF

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Publication number
CN116038258A
CN116038258A CN202310088941.4A CN202310088941A CN116038258A CN 116038258 A CN116038258 A CN 116038258A CN 202310088941 A CN202310088941 A CN 202310088941A CN 116038258 A CN116038258 A CN 116038258A
Authority
CN
China
Prior art keywords
fan
rotor shaft
transition plate
positioning
rib
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310088941.4A
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Chinese (zh)
Inventor
吴逸超
王君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Electric Group Shanghai Electric Machine Works Co ltd
Original Assignee
Shanghai Electric Group Shanghai Electric Machine Works Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Electric Group Shanghai Electric Machine Works Co ltd filed Critical Shanghai Electric Group Shanghai Electric Machine Works Co ltd
Priority to CN202310088941.4A priority Critical patent/CN116038258A/en
Publication of CN116038258A publication Critical patent/CN116038258A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H7/00—Marking-out or setting-out work
    • B25H7/04—Devices, e.g. scribers, for marking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a drilling method for a large motor fan mounting hole, which uses a tool transition plate and comprises the following steps: lifting the tooling transition plate to the rotor shaft, wherein one side of the tooling transition plate is connected with one side of a rotor shaft rib in a matching and installing way; marking and positioning on the rotor shaft rib; dismantling a tool transition plate; drilling holes and screw holes on the end face of the rotor shaft rib according to the marks; lifting the tooling transition plate to the fan, and installing and connecting the other side of the tooling transition plate with the fan in a matching way; marking and positioning on the fan; dismantling a tool transition plate; drilling a through hole on the fan according to the mark; and lifting the fan to the rotor shaft, aligning the fan with the positioning marks on the ribs of the rotor shaft, and fixing the fan on the rotor shaft by using bolts. According to the method, the tooling transition plate is utilized, the hole positions which are needed to be preassembled and determined originally are fixed on the tooling in advance, and the same transition tooling is used for positioning the rotor shaft rib and the mounting hole positions on the fan, so that the fan and the rotor are prevented from being misplaced during mounting.

Description

Hole drilling method for large motor fan installation
Technical Field
The invention relates to a drilling method for a hole for installing a large motor fan, and belongs to the technical field of large motor rotor fans.
Background
The conventional large motor rotor fan adopts a bolt fastening installation mode, and the fan is fixed on the rotor by using bolts because the large motor rotor fan mostly adopts a welding structure.
However, because of the large size of the rotor and the fan, when the mounting holes and screw holes are processed, such as by adopting processing equipment with high precision, the cost is too high and the manufacturing period is long. In the machining mode with low precision, the precision of the holes is difficult to control due to the large sizes of the fan and the rotor, and when the fan is installed, the holes are dislocated, so that the fan cannot be installed. Therefore, in actual production, a matching processing mode is mostly adopted (namely, after the rotor and the fan are manufactured, only matching is performed to mark the positions of screw holes, and then the screw holes are drilled).
As shown in fig. 7, the conventional drill matching method is as follows: the method comprises the steps of respectively machining a rotor and a fan, preassembling the rotor and the fan, drilling holes on the rotor and the fan, removing the fan, drilling the rotor, and finally installing the fan and the rotor together through the holes on the rotor.
The prior art has higher requirement on the material arrival period of two parts (a fan and a rotor), and has a preassembling procedure in the process of matching and processing, so that the production beat is reduced, and certain safety risk is avoided.
It is necessary to find a method to solve the problem of the matching processing of the fan and the rotor, and to solve the problem that the processing of the fan mounting hole at the present stage needs to wait for the complete processing of the rotor and the fan.
Disclosure of Invention
The invention aims to solve the technical problems that: how to solve the problem of the matching processing of the fan and the rotor and the situation that the processing of the fan mounting hole at the present stage needs to wait for the complete processing of the rotor and the fan.
In order to solve the technical problems, the technical scheme of the invention provides a drilling method for a hole for installing a large motor fan, which is characterized by using a tool transition plate and comprising the following steps of:
step 1, lifting a tool transition plate to a rotor shaft, wherein one side of the tool transition plate is connected with one side of a rotor shaft rib in a matching and installing manner;
step 2, marking and positioning on the rotor shaft rib;
step 3, dismantling a tool transition plate;
step 4, drilling holes and screw holes on the end face of the rotor shaft rib according to the marks;
step 5, lifting the tool transition plate to the fan, and installing and connecting the other side of the tool transition plate with the fan in a matching way;
step 6, marking and positioning on the fan;
step 7, dismantling a tool transition plate;
step 8, drilling through holes on the fan according to the marks;
and 9, lifting the fan to the rotor shaft, aligning the fan with the positioning marks on the ribs of the rotor shaft, and fixing the fan on the rotor shaft by using bolts.
Preferably, the tool transition plate comprises a concave spigot on one side and a convex spigot on the other side, wherein the convex spigot is matched with the inner circle of the fan, and the concave spigot is matched with the outer circle of the rotor shaft rib; the outer circle of the convex spigot is concentric with the inner circle of the concave spigot.
Preferably, in the step 1, a concave spigot on one side of the tooling transition plate is mounted on the outer circle of the rotor shaft rib.
Preferably, the center of the tooling transition plate is provided with a through hole, and the inner wall of the through hole is provided with a positioning notch.
Preferably, the step 2 of marking and positioning the rotor bar comprises the following steps: the positioning notch corresponds to the central line of the rotor shaft rib; marking the end face of the rotor shaft rib by using the tip end of the head part of the positioning pin through a through hole on the tool transition plate; and positioning marks are made on the rotor shaft ribs by using a marking pen through the positioning notch.
Preferably, in the step 5, the male spigot on the other side of the tool transition plate is installed in the inner circle of the fan.
Preferably, the positioning of the fan in step 6 includes the following steps: the positioning notch corresponds to the central line of the fan rib; marking a line on the end face of the fan through a through hole on the tool transition plate by using a locating pin; through the positioning notch, a marker pen is used for making positioning marks on the fan rib.
The method of the invention eliminates the matching processing technology of the fan and the rotor, and the hole site which is originally needed to be preassembled and determined is fixed on the tool in advance by utilizing the tool transition plate, and the rotor shaft rib and the installation hole site on the fan are positioned by using the same transition tool. Therefore, the dislocation can not be caused when the fan and the rotor are installed, the process route is optimized, the fan preassembling procedure is reduced, the clamping of the production beats caused by waiting for the rotor and the fan parts to be subjected to material is avoided when the fan is matched and processed, and the risk when the fan is preassembled is reduced.
Drawings
FIG. 1 is a schematic side view of a tooling transition plate;
FIG. 2 is a schematic front view of a tooling transition plate;
FIG. 3 is a schematic view of a dowel pin;
FIG. 4 is a schematic front view of a fan;
FIG. 5 is a partial schematic view of a side of a fan;
FIG. 6 is a partial schematic view of a rotor shaft rib;
FIG. 7 is a process route diagram of a conventional drill bit allocation method;
fig. 8 is a process route diagram of a method for drilling holes for installing a large motor fan.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
The invention provides a drilling method for a large motor fan mounting hole, which uses a tool transition plate 1, wherein the tool transition plate 1 is provided with a male spigot 12 and a female spigot 11. The convex spigot 12 of the tool transition plate 1 is matched with the inner circle of the fan 2 (shown in fig. 1, 2, 4 and 5), and the concave spigot 11 is matched with the outer circle of the rotor shaft rib 31 (shown in fig. 1, 2 and 6). The concentricity of the outer circle of the convex spigot 12 and the inner circle of the concave spigot 11 of the tool transition plate 1 is good, and a positioning notch 13 is reserved on the inner circle of the through hole 14 of the tool transition plate 1, so that the fan 2 can be conveniently installed and positioned.
As shown in fig. 8, the specific operation steps of the present invention are as follows:
step 1, lifting a tool transition plate 1 to a rotor shaft 3, and mounting a concave spigot 11 on the outer circle of a rotor shaft rib 31;
step 2, the positioning notch 13 corresponds to the central line of the rotor shaft rib 31;
step 3, marking the end face of the rotor shaft rib 31 by using a locating pin 4 (shown in figure 3) through a through hole 14 on the tooling transition plate 1;
step 4, positioning marks are made on the rotor shaft ribs 31 by using a marking pen through the positioning notch 13;
step 5, dismantling the tool transition plate 1;
step 6, drilling holes and screw holes on the end face of the rotor shaft rib 31 according to the marking marks;
step 7, lifting the tool transition plate 1 to the fan 2, and installing the convex spigot 12 into the inner circle of the fan 2;
step 8, the positioning notch 13 corresponds to the central line of the fan rib 21;
step 9, scribing the end face of the fan 2 through the inner wall of the through hole 14 on the tool transition plate 1 by using the tip end of the head part of the positioning pin 4;
step 10, positioning marks are made on the fan ribs 21 by using a marking pen through the positioning notch 13;
step 11, dismantling the tool transition plate 1;
step 12, the fan 2 drills through holes according to the marking marks;
and 13, lifting the fan 2 to the rotor shaft 3, aligning the positioning marks on the fan 2 and the rotor shaft ribs 31, and fixing the fan 2 on the rotor shaft 3 by using bolts.
As shown in fig. 6, the rotor shaft ribs 31 are located at circumferential positions of the rotor shaft 3, and equally divided in the circumferential direction by the same number as the fan ribs 21.
The invention changes the process method and the process tool, optimizes the process route, adjusts the original serial route (shown in figure 7) to be parallel (shown in figure 8), realizes that the fan mounting hole can be finished in advance, and can be assembled directly after the fan and the rotor are in place.

Claims (7)

1. The drilling method for the holes for installing the large motor fan is characterized by comprising the following steps of:
step 1, hoisting a tool transition plate (1) to a rotor shaft (3), wherein one side of the tool transition plate (1) is in matched installation connection with one side of a rotor shaft rib (31);
step 2, marking and positioning on the rotor shaft ribs (31);
step 3, dismantling a tool transition plate (1);
step 4, drilling holes and screw holes on the end face of the rotor shaft rib (31) according to marks;
step 5, lifting the tool transition plate (1) to the fan (2), and installing and connecting the other side of the tool transition plate (1) with the fan (2) in a matching way;
step 6, marking and positioning on the fan (2);
step 7, dismantling a tool transition plate (1);
step 8, drilling through holes on the fan (2) according to the marks;
and 9, lifting the fan (2) to the rotor shaft (3), aligning the positioning marks on the fan (2) and the rotor shaft ribs (31), and fixing the fan (2) on the rotor shaft (3) by using bolts.
2. The method for matching the holes for installing the large motor fan according to claim 1, wherein the tool transition plate (1) comprises a concave spigot (11) positioned on one side and a convex spigot (12) positioned on the other side, the convex spigot (12) is matched with the inner circle of the fan (2), and the concave spigot (11) is matched with the outer circle of the rotor shaft rib (31); the outer circle of the male spigot (12) is concentric with the inner circle of the female spigot (11).
3. The method for drilling holes for installing a large motor fan according to claim 2, wherein in the step 1, the concave spigot (11) on one side of the tool transition plate (1) is installed on the outer circle of the rotor shaft rib (31).
4. The method for matching the holes for installing the large motor fan according to claim 2, wherein the center of the tool transition plate (1) is provided with a through hole (14), and the inner wall of the through hole (14) is provided with a positioning notch (13).
5. The method for drilling holes for installing a large-sized motor fan according to claim 4, wherein the marking and positioning of the rotor ribs (31) in the step 2 comprises the steps of: the positioning notch (13) corresponds to the central line of the rotor shaft rib (31); marking out the end face of the rotor shaft rib (31) through a through hole (14) on the tooling transition plate (1) by using the tip of the head part of the positioning pin (4); through the positioning notch (13), a marker pen is used for making positioning marks on the rotor shaft rib (31).
6. The method for drilling holes for installing a large motor fan according to claim 2, wherein in the step 5, the male spigot (12) on the other side of the tool transition plate (1) is installed in the inner circle of the fan (2).
7. A method for drilling holes for installing a large-sized motor fan according to claim 4, wherein the marking and positioning of the fan (2) in the step 6 comprises the steps of: the positioning notch (13) corresponds to the central line of the fan rib (21); marking out the end face of the fan (2) through a through hole (14) on the tool transition plate (1) by using a positioning pin (4); through the positioning notch (13), a marker pen is used for making positioning marks on the fan rib (21).
CN202310088941.4A 2023-02-03 2023-02-03 Hole drilling method for large motor fan installation Pending CN116038258A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310088941.4A CN116038258A (en) 2023-02-03 2023-02-03 Hole drilling method for large motor fan installation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310088941.4A CN116038258A (en) 2023-02-03 2023-02-03 Hole drilling method for large motor fan installation

Publications (1)

Publication Number Publication Date
CN116038258A true CN116038258A (en) 2023-05-02

Family

ID=86113219

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310088941.4A Pending CN116038258A (en) 2023-02-03 2023-02-03 Hole drilling method for large motor fan installation

Country Status (1)

Country Link
CN (1) CN116038258A (en)

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