CN115609361B - Machining method of multi-groove part - Google Patents
Machining method of multi-groove part Download PDFInfo
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- CN115609361B CN115609361B CN202211524513.3A CN202211524513A CN115609361B CN 115609361 B CN115609361 B CN 115609361B CN 202211524513 A CN202211524513 A CN 202211524513A CN 115609361 B CN115609361 B CN 115609361B
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- workpiece
- grinding wheel
- roller
- tooth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/14—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding turbine blades, propeller blades or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
- B24B53/075—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The invention provides a method for processing a multi-groove part, which comprises the following steps when the measured tooth width of a workpiece is smaller than a theoretical size and/or the measured convex R of the tooth is larger than the theoretical size: s1, ensuring that the mounting positions of a grinding wheel and a workpiece in the axial direction are unchanged; s2, moving the roller away from the positioning edge of the tooth part for a fixed distance in the axial direction; s3, enabling the roller to approach the grinding wheel along the radial direction; s4, tracking the grinding wheel to a theoretical depth by using a roller; s5, retracting the roller; and S6, using the trimmed grinding wheel to be close to the workpiece along the radial direction, and machining the workpiece to a theoretical size. The service life of the roller is prolonged, the production consumption of the roller is reduced, the production cost is reduced, and resources are saved.
Description
Technical Field
The invention relates to the technical field of machining of airplane turbine blades, in particular to a method for machining a multi-groove part.
Background
Referring to fig. 1, a tenon tooth portion of an aircraft turbine blade is obtained by grinding a plurality of tooth portions simultaneously by a grinding wheel, and in order to ensure the machining accuracy of the tenon tooth, a roller is often used to dress the grinding wheel. When the roller has manufacturing errors or is worn, the toothed parts are densely distributed on the roller, and the roller is made of hard alloy, so that the roller is difficult to finish tracking processing to recover to a theoretical value, and the roller which is worn or has processing defects in the existing production is usually directly discarded. The roller is special in material and shape and high in manufacturing cost, so that a large amount of resources are wasted due to the treatment mode, and the production cost is increased.
Disclosure of Invention
The invention aims to provide a method for processing a multi-groove part, which prolongs the service life of a worn roller and reuses the roller with processing defects.
The embodiment of the invention is realized by the following technical scheme:
a method for processing a multi-groove part, when the tooth width of a workpiece is measured to be smaller than a theoretical size and/or the convex R of the tooth is measured to be larger than the theoretical size, the method comprises the following steps: s1, ensuring that the mounting positions of a grinding wheel and a workpiece in the axial direction are unchanged; s2, moving the roller away from the positioning edge of the tooth part for a fixed distance in the axial direction; s3, enabling the roller to be close to the grinding wheel along the radial direction; s4, tracking the grinding wheel to a theoretical depth by using a roller; s5, retracting the roller; and S6, enabling the grinding wheel to be close to the workpiece along the radial direction, and machining the workpiece to a theoretical size.
Further, the fixed distance is: 0.01mm-0.03mm.
Further, when the measured tooth width of the workpiece is larger than the theoretical size, the method comprises the following steps: s1, enabling a grinding wheel to approach a workpiece along a radial direction; s2, machining the tooth grooves to a theoretical depth; s3, ensuring that the radial distance between the grinding wheel and the workpiece is unchanged; s4, moving the grinding wheel away from the positioning edge of the tooth part for a fixed distance in the axial direction; s5, retracting the grinding wheel along the radial direction; s6, retracting the grinding wheel along the axial direction; and S7, dressing the grinding wheel by using a roller.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:
the invention relates to a method for processing a multi-groove part, which comprises the following steps when the measured tooth width of a workpiece is smaller than a theoretical size and/or the measured convex R of the tooth is larger than the theoretical size: s1, ensuring that the mounting positions of a grinding wheel and a workpiece in the axial direction are unchanged; s2, moving the roller away from the positioning edge of the tooth part for a fixed distance in the axial direction; s3, enabling the roller to be close to the grinding wheel along the radial direction; s4, tracking the grinding wheel to a theoretical depth by using a roller; s5, retracting the roller; and S6, using the trimmed grinding wheel to be close to the workpiece along the radial direction, and machining the workpiece to a theoretical size. The grinding wheel is subjected to tracking processing by using the roller which is worn or has processing defects, so that the grinding wheel meets the processing requirement again, the service life of the roller is prolonged, the production consumption of the roller is reduced, the production cost is reduced, and resources are saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic illustration of workpiece processing;
FIG. 2 is a schematic diagram showing the comparison between the tooth part of the qualified workpiece and the upper and lower tolerances, which is provided in example 1 of the present invention;
FIG. 3 is a schematic diagram showing the comparison of the tooth width and the upper and lower tolerances of an unqualified workpiece machined by a roller dressing grinding wheel after abrasion according to embodiment 1 of the present invention;
FIG. 4 is a schematic view of a roller dresser wheel according to embodiment 1 of the present invention;
FIG. 5 is a schematic diagram of roller adjustment at A of FIG. 4 according to embodiment 1 of the present invention;
FIG. 6 is a schematic diagram showing the comparison of the convex R and the upper and lower tolerances of a workpiece machined by a grinding wheel dressed by using the regulating roller of the invention according to example 1 of the present invention;
FIG. 7 is a schematic diagram showing the comparison of the tooth width and the upper and lower tolerances of a workpiece machined by a grinding wheel dressed by using the regulating roller of the invention according to example 1 of the present invention;
FIG. 8 is a schematic view of a grinding wheel machining workpiece provided in embodiment 2 of the present invention;
fig. 9 is a schematic diagram showing the comparison between the tooth width and the upper and lower tolerances of the unqualified workpiece processed by the grinding wheel according to embodiment 2 of the present invention;
FIG. 10 is a schematic diagram of a grinding wheel dressing at B of FIG. 8 according to example 2 of the present invention;
FIG. 11 is a schematic diagram showing the comparison of the tolerance of the workpiece and the upper and lower tolerances after the dressing using the dresser wheel of the present invention according to example 2 of the present invention;
icon: 1-workpiece, 11-tooth part, 111-convex R, 12-outer contour, 13-positioning edge, 14-non-positioning edge, 2-grinding wheel, 3-roller, 4-upper tolerance and 5-lower tolerance.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
Example 1
Referring to fig. 2 to 7, the present invention provides a method for machining a multi-groove part, which uses a roller 3 worn to dress a grinding wheel 2 when it is measured that the width of a tooth 11 of a workpiece 1 is smaller than a theoretical size and/or the width R111 of the tooth 11 is larger than the theoretical size, comprising the steps of: s1, ensuring that the mounting positions of a grinding wheel 2 and a workpiece 1 in the axial direction are unchanged; s2, moving the roller 3 away from the positioning edge 13 of the tooth part 11 by a fixed distance in the axial direction; s3, enabling the roller 3 to be close to the grinding wheel 2 along the radial direction; s4, the grinding wheel 2 is processed to a theoretical depth by the roller 3; s5, retracting the roller 3; and S6, using the trimmed grinding wheel 2 to approach the workpiece 1 along the radial direction, and machining the workpiece 1 to a theoretical size.
When the grinding wheel 2 is subjected to abrasion after the roller 3 finishes the grinding wheel 2 for a plurality of times, the outer contour 12 of the workpiece 1 is under the allowable lower tolerance 5 of the workpiece 1 because the tooth part of the roller 3 is in contact with the grinding wheel 2 for the longest time and the abrasion is the most serious in the work of finishing the grinding wheel 2. At this time, after the worn roller 3 is used to trim the grinding wheel 2 to the theoretical depth, the roller 3 is moved by a fixed distance in the axial direction from the positioning edge 13 of the roller 3 away from the tooth part, and the fixed distance is as follows: 0.01mm-0.03mm, to follow the groove part and tooth part 11 of the grinding wheel 2 to the theoretical size. And the grinding wheel 2 trimmed by the method is used for processing the rest of the workpieces 1, and the roller 3 with the radius increased at the worn convex part R111 and/or the width reduced of the tooth part 11 or the processing defect in the processing process is reused to enable the outer contour 12 of the workpiece 1 to meet the tolerance requirement, so that the service life of the roller 3 is prolonged, the cost in the production is reduced, and the method has great significance in mass production.
The implementation principle of the invention is as follows: one side of the tooth part 11 of the tenon tooth is a positioning edge 13, and the other side of the tooth part 11 of the tenon tooth is a non-positioning edge 14, and because the positioning edges 13 which are parallel to each other in the tenon tooth part 11 play a vital role in installation and measurement, the distance between the positioning edge 13 and the non-positioning edge 14 of the tooth part 11 is measured to be compared with the design tolerance so as to judge whether the tolerance is met. In the method, under the condition that the positioning edge 13 of the workpiece 1 is unchanged and the tolerance requirement is met, the roller 3 is used for performing additional machining on the non-positioning edge 14, so that the workpiece 1 meets the tolerance requirement again.
Example 2
Referring to fig. 8 to 11, a method for machining a multi-groove part, when the width of the tooth part 11 of the workpiece 1 is measured to be larger than the theoretical size, comprises the following steps: s1, enabling a grinding wheel 2 to be close to a workpiece 1 along the radial direction; s2, machining the tooth grooves to a theoretical depth; s3, ensuring that the distance between the grinding wheel 2 and the workpiece 1 in the radial direction is unchanged; s4, moving the grinding wheel 2 away from the positioning edge 13 of the tooth part 11 by a fixed distance in the axial direction; s5, retracting the grinding wheel 2 along the radial direction; s6, retracting the grinding wheel 2 along the axial direction; and S7, dressing the grinding wheel 2 by using the roller 3.
When the roller 3 itself has machining defects, the width of the teeth 11 of the grinding wheel 2 is greater than the theoretical dimension, resulting in the outer contour 12 of the workpiece 1 being above the upper tolerance 4 allowed for the workpiece 1. At this time, after the grinding wheel 2 is close to the workpiece 1 along the radial direction and the tooth slot is machined to the theoretical depth, the distance between the grinding wheel 2 and the workpiece 1 in the radial direction is ensured to be unchanged, the positioning edge 13, far away from the tooth part 11, of the grinding wheel 2 moves for a fixed distance in the axial direction, and the fixed distance is as follows: 0.01mm-0.03mm, additionally processing the workpiece 1 to the theoretical size, retreating the grinding wheel 2 along the radial direction, finally retreating the grinding wheel 2 along the axial direction, and finishing the grinding wheel 2 in the subsequently processed workpiece 1 by using a roller 3. In the method, the roller 3 with defects is reused, the grinding wheel 2 can be normally used for dressing after the tooth parts 11 of the roller 3 are worn to the theoretical size from large to small, the condition in the embodiment 1 can occur when the roller 3 is worn continuously, and the service life of the roller 3 can be further prolonged continuously through the processing method in the embodiment 1.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A processing method of a multi-groove part is characterized in that one side of a tooth part (11) of a tenon tooth is a positioning edge (13), the other side of the tooth part is a non-positioning edge (14),
when the width of the tooth part (11) of the workpiece (1) is measured to be larger than the theoretical size, and the outer contour (12) of the workpiece (1) is above the allowable upper tolerance (4) of the workpiece (1), the method comprises the following steps:
s11, enabling the grinding wheel (2) to be close to the workpiece (1) along the radial direction;
s12, machining the tooth grooves of the workpiece (1) to a theoretical depth;
s13, ensuring that the distance between the grinding wheel (2) and the workpiece (1) in the radial direction is unchanged;
s14, moving the grinding wheel (2) away from the positioning edge (13) of the tooth part (11) by a fixed distance in the axial direction, and machining the workpiece (1) to a theoretical size;
s15, retracting the grinding wheel (2) along the radial direction;
s16, retracting the grinding wheel (2) along the axial direction;
s17, dressing the grinding wheel (2) by using the roller (3);
when it is determined that the width of the toothing (11) of the workpiece (1) is smaller than a theoretical dimension and/or the convexity R (111) of the toothing (11) is larger than the theoretical dimension, the outer contour (12) of the workpiece (1) lies below a permissible lower tolerance (5) of the workpiece (1), comprising the following steps:
s21, ensuring that the mounting positions of the grinding wheel (2) and the workpiece (1) in the axial direction are unchanged;
s22, moving the roller (3) away from the positioning edge (13) of the tooth part (11) for a fixed distance in the axial direction;
s23, enabling the roller (3) to be close to the grinding wheel (2) along the radial direction;
s24, tracking the grinding wheel (2) to a theoretical depth by using the roller (3);
s25, retracting the roller (3) along the radial direction;
s26, enabling the grinding wheel (2) to be close to the workpiece (1) along the radial direction, and machining the workpiece (1) to a theoretical size.
2. The method of claim 1, wherein the fixed distance is: 0.01mm-0.03mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211524513.3A CN115609361B (en) | 2022-12-01 | 2022-12-01 | Machining method of multi-groove part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211524513.3A CN115609361B (en) | 2022-12-01 | 2022-12-01 | Machining method of multi-groove part |
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| CN115609361A CN115609361A (en) | 2023-01-17 |
| CN115609361B true CN115609361B (en) | 2023-04-11 |
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| JP2010194623A (en) * | 2009-02-23 | 2010-09-09 | Jtekt Corp | Thread grinding machine and thread groove grinding method |
| CN114290127A (en) * | 2021-12-22 | 2022-04-08 | 科德数控股份有限公司 | Grinding wheel dressing and grinding wheel replacing method |
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| CH650183A5 (en) * | 1981-01-27 | 1985-07-15 | Reishauer Ag | METHOD FOR MACHINING A GEAR WITH A ROTATING TOOL. |
| JP3752398B2 (en) * | 1998-03-27 | 2006-03-08 | 三菱マテリアル神戸ツールズ株式会社 | Correction method of twist groove forming grinding process and twist groove forming grinding apparatus |
| JP5536250B1 (en) * | 2013-03-22 | 2014-07-02 | 三菱重工業株式会社 | Gear processing equipment |
| CN103286686B (en) * | 2013-06-04 | 2015-10-07 | 南京工业大学 | Nonlinear wear compensation system and method for numerical control forming gear grinding diamond roller |
| CN104368880B (en) * | 2013-08-13 | 2016-09-14 | 南车戚墅堰机车车辆工艺研究所有限公司 | A kind of tangential admission hobbing method for gear-hobbing machine |
| CN104148992B (en) * | 2014-07-16 | 2016-08-24 | 北京航空航天大学 | A kind of grinding processing method for the processing of impeller hub tongue-and-groove |
| CN104942380B (en) * | 2015-06-02 | 2017-05-03 | 重庆大学 | Worm grinding wheel gear grinding surface distortion compensation method |
| CN105834839B (en) * | 2016-04-06 | 2018-03-02 | 中国南方航空工业(集团)有限公司 | Method of the double angle tenon tooths of grinding to table part |
| CN106707963B (en) * | 2017-03-02 | 2019-04-19 | 泉州华中科技大学智能制造研究院 | A kind of abrasion of grinding wheel real-time compensation method based on digital control system |
| CN109968204B (en) * | 2019-03-21 | 2021-05-14 | 华南理工大学 | Numerical control grinding shape error self-adaptive compensation method for mutual abrasion of grinding wheel workpieces |
| CN111638682B (en) * | 2020-05-26 | 2023-04-28 | 四川新迎顺信息技术股份有限公司 | Compensation method for grinding peripheral tooth helical blade back knife surface by using abrasion grinding wheel |
| CN111890133B (en) * | 2020-08-31 | 2021-05-25 | 成都和鸿科技有限公司 | Processing method of palm tree-shaped tenon teeth |
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2022
- 2022-12-01 CN CN202211524513.3A patent/CN115609361B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010194623A (en) * | 2009-02-23 | 2010-09-09 | Jtekt Corp | Thread grinding machine and thread groove grinding method |
| CN114290127A (en) * | 2021-12-22 | 2022-04-08 | 科德数控股份有限公司 | Grinding wheel dressing and grinding wheel replacing method |
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