CN113828838A - Method for machining key groove of inner hole of large impeller - Google Patents
Method for machining key groove of inner hole of large impeller Download PDFInfo
- Publication number
- CN113828838A CN113828838A CN202010512355.4A CN202010512355A CN113828838A CN 113828838 A CN113828838 A CN 113828838A CN 202010512355 A CN202010512355 A CN 202010512355A CN 113828838 A CN113828838 A CN 113828838A
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- CN
- China
- Prior art keywords
- inner hole
- key groove
- impeller
- cutting
- machining
- 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
Links
- 238000003754 machining Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003801 milling Methods 0.000 claims abstract description 34
- 238000005520 cutting process Methods 0.000 claims abstract description 26
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 239000002173 cutting fluid Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/30—Milling straight grooves, e.g. keyways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a method for processing a key groove of an inner hole of a large impeller, which comprises the following operation steps: s1: using an slotting machine as processing equipment, and aligning a special milling head to enable the special milling head to be superposed with the main axis of a machine tool; s2: clamping the impeller as required to fix the impeller on an X-axis sliding table on a workbench; s3: adjusting the center of the milling head to coincide with the center of the slot hole to be milled; s4: a milling head is provided with a keyway milling cutter, proper parameters are adjusted for cutting, and trial cutting is carried out on the inner hole wall; s5: cutting according to the set parameters; s6: measuring the depth of the inner hole key groove by using a dial indicator; s7: after cutting, checking whether the drawing parameter tolerance is met; s8: and after the processing is finished, polishing and grinding the surface of the key groove of the inner hole. The machining method is simple to operate, the slotting machine moves up and down to machine the inner hole key groove of the large impeller, machining precision and machining efficiency are high, machining precision and machining quality of the inner hole key groove are effectively guaranteed, and the machining method is suitable for machining the inner hole key groove of large-scale impellers.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a machining method for a large impeller inner hole key groove.
Background
The impeller refers to a disk provided with moving blades, is a component of an impulse turbine rotor, and can also be a general name of the disk and the rotating blades arranged on the disk. The impeller is usually fixed on the rotating shaft by a pin, so that the inner hole of the impeller needs to be subjected to keyway processing in the impeller processing production process. The machining precision that the present slotting machine, planer, wire cutting equipment exist to the hole keyway processing of large-scale impeller is lower, complex operation, and the precision of keyway can not be guaranteed, and the keyway is too big can cause the impeller to fix insecurely, and the keyway undersize then can't be installed smoothly. Therefore, a method for machining the inner hole key groove of the large impeller needs to be provided, so that the machining precision of the inner hole key groove is improved.
Disclosure of Invention
The invention aims to provide a method for machining a key groove of an inner hole of a large impeller, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a large impeller inner hole key groove machining method comprises the following operation steps:
s1: using an slotting machine as processing equipment, and aligning a special milling head to enable the special milling head to be superposed with the main axis of a machine tool;
s2: clamping the impeller as required to fix the impeller on an X-axis sliding table on a workbench;
s3: adjusting the center of the milling head to coincide with the center of the slot hole to be milled;
s4: a milling head is provided with a keyway milling cutter, proper parameters are adjusted for cutting, and trial cutting is carried out on the inner hole wall;
s5: cutting according to the set parameters, and continuously adding cutting fluid to cool the slot to be milled in the machining process;
s6: measuring the depth of the inner hole key groove by using a dial indicator, stopping the measurement when the depth of the inner hole key groove is less than 0.2 mm of the required size, and determining a final cutting numerical value to ensure the key groove tolerance;
s7: after cutting, measuring the key groove parameters again, and checking whether the key groove parameters meet the drawing parameter tolerance;
s8: and after the processing is finished, polishing and grinding the surface of the key groove of the inner hole.
Preferably, the width of the keyway cutter in step S4 is the same as the width of the keyway of the inner bore to be machined.
Preferably, the milling cutter in step S5 has a cutting depth of 0.2 to 0.4mm and a cutting speed of 120 mm/min.
Preferably, the milling cutter in the step S5 is perpendicular to the impeller inner bore end surface of the inner bore key groove to be processed.
Preferably, in step S2, the running direction of the X-axis sliding table is the same as the direction of the central line of the inner hole key groove and the connecting line of the milling head, and the X-axis sliding table is used to drive the impeller to move, so that the impeller is fed relative to the milling cutter.
The invention has the technical effects and advantages that:
the machining method is simple to operate, the slotting machine moves up and down to machine the inner hole key groove of the large impeller, machining precision and machining efficiency are high, machining precision and machining quality of the inner hole key groove are effectively guaranteed, and the machining method is suitable for machining the inner hole key groove of large-scale impellers.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A large impeller inner hole key groove machining method comprises the following operation steps:
s1: using an slotting machine as processing equipment, and aligning a special milling head to enable the special milling head to be superposed with the main axis of a machine tool;
s2: clamping the impeller as required to fix the impeller on an X-axis sliding table on a workbench;
s3: adjusting the center of the milling head to coincide with the center of the slot hole to be milled;
s4: a milling head is provided with a keyway milling cutter, proper parameters are adjusted for cutting, and trial cutting is carried out on the inner hole wall;
s5: cutting according to the set parameters, and continuously adding cutting fluid to cool the slot to be milled in the machining process;
s6: measuring the depth of the inner hole key groove by using a dial indicator, stopping the measurement when the depth of the inner hole key groove is less than 0.2 mm of the required size, and determining a final cutting numerical value to ensure the key groove tolerance;
s7: after cutting, measuring the key groove parameters again, and checking whether the key groove parameters meet the drawing parameter tolerance;
s8: and after the processing is finished, polishing and grinding the surface of the key groove of the inner hole.
The width of the key groove milling cutter in the step S4 is the same as the width of the key groove of the inner hole to be processed.
In step S5, the cutting depth of the milling cutter is 0.2-0.4mm, and the cutting speed is 120 mm/min.
And in the step S5, the milling cutter is perpendicular to the end surface of the inner hole of the impeller of the key groove of the inner hole to be processed.
In step S2, the operation direction of the X-axis sliding table is the same as the direction of the central line of the inner hole keyway and the connecting line of the milling head, and the X-axis sliding table is used to drive the impeller to move, so that the impeller feeds relative to the milling cutter.
The machining method is simple to operate, the slotting machine moves up and down to machine the inner hole key groove of the large impeller, machining precision and machining efficiency are high, machining precision and machining quality of the inner hole key groove are effectively guaranteed, and the machining method is suitable for machining the inner hole key groove of large-scale impellers.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. A large impeller inner hole key groove machining method is characterized by comprising the following steps: the method comprises the following operation steps:
s1: using an slotting machine as processing equipment, and aligning a special milling head to enable the special milling head to be superposed with the main axis of a machine tool;
s2: clamping the impeller as required to fix the impeller on an X-axis sliding table on a workbench;
s3: adjusting the center of the milling head to coincide with the center of the slot hole to be milled;
s4: a milling head is provided with a keyway milling cutter, proper parameters are adjusted for cutting, and trial cutting is carried out on the inner hole wall;
s5: cutting according to the set parameters, and continuously adding cutting fluid to cool the slot to be milled in the machining process;
s6: measuring the depth of the inner hole key groove by using a dial indicator, stopping the measurement when the depth of the inner hole key groove is less than 0.2 mm of the required size, and determining a final cutting numerical value to ensure the key groove tolerance;
s7: after cutting, measuring the key groove parameters again, and checking whether the key groove parameters meet the drawing parameter tolerance;
s8: and after the processing is finished, polishing and grinding the surface of the key groove of the inner hole.
2. The large impeller inner hole keyway machining method according to claim 1, characterized in that: the width of the key groove milling cutter in the step S4 is the same as the width of the key groove of the inner hole to be processed.
3. The large impeller inner hole keyway machining method according to claim 1, characterized in that: in step S5, the cutting depth of the milling cutter is 0.2-0.4mm, and the cutting speed is 120 mm/min.
4. The large impeller inner hole keyway machining method according to claim 1, characterized in that: and in the step S5, the milling cutter is perpendicular to the end surface of the inner hole of the impeller of the key groove of the inner hole to be processed.
5. The large impeller inner hole keyway machining method according to claim 1, characterized in that: in step S2, the operation direction of the X-axis sliding table is the same as the direction of the central line of the inner hole keyway and the connecting line of the milling head, and the X-axis sliding table is used to drive the impeller to move, so that the impeller feeds relative to the milling cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010512355.4A CN113828838A (en) | 2020-06-08 | 2020-06-08 | Method for machining key groove of inner hole of large impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010512355.4A CN113828838A (en) | 2020-06-08 | 2020-06-08 | Method for machining key groove of inner hole of large impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113828838A true CN113828838A (en) | 2021-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010512355.4A Pending CN113828838A (en) | 2020-06-08 | 2020-06-08 | Method for machining key groove of inner hole of large impeller |
Country Status (1)
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| CN (1) | CN113828838A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871480A (en) * | 2022-05-09 | 2022-08-09 | 沈阳鼓风机集团核电泵业有限公司 | Method for machining tapered inner hole key groove parallel to bus, impeller and shaft seal pump |
| CN115055907A (en) * | 2022-06-07 | 2022-09-16 | 中国航发成都发动机有限公司 | Slotting repair method for prolonging service life of aero-engine compressor wheel disc |
-
2020
- 2020-06-08 CN CN202010512355.4A patent/CN113828838A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871480A (en) * | 2022-05-09 | 2022-08-09 | 沈阳鼓风机集团核电泵业有限公司 | Method for machining tapered inner hole key groove parallel to bus, impeller and shaft seal pump |
| CN115055907A (en) * | 2022-06-07 | 2022-09-16 | 中国航发成都发动机有限公司 | Slotting repair method for prolonging service life of aero-engine compressor wheel disc |
| CN115055907B (en) * | 2022-06-07 | 2023-09-15 | 中国航发成都发动机有限公司 | Slotting repair method for prolonging service life of aeroengine compressor wheel disc |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20211224 |
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| WD01 | Invention patent application deemed withdrawn after publication |