CN118080990A - Machining method for centering high-speed precise transmission herringbone teeth and gear thereof - Google Patents
Machining method for centering high-speed precise transmission herringbone teeth and gear thereof Download PDFInfo
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- CN118080990A CN118080990A CN202410007191.8A CN202410007191A CN118080990A CN 118080990 A CN118080990 A CN 118080990A CN 202410007191 A CN202410007191 A CN 202410007191A CN 118080990 A CN118080990 A CN 118080990A
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- helical gear
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- 238000000034 method Methods 0.000 title claims abstract description 120
- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 238000003754 machining Methods 0.000 title claims description 19
- 238000012545 processing Methods 0.000 claims abstract description 28
- 238000003672 processing method Methods 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy 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
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F7/00—Making herringbone gear teeth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
-
- 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
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
- B23Q15/22—Control or regulation of position of tool or workpiece
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a processing method for centering high-speed precise transmission herringbone teeth, which comprises the following steps: processing a process hole A on a left-handed helical gear piece, and processing a process hole B on a right-handed helical gear piece; the centers of the process hole A and the process hole B are respectively centered with the tooth top centers of the reference teeth J on the corresponding helical gear; after the connecting piece A and the connecting piece B are assembled, processing the process pin hole C and the process pin hole D; the center lines of the process pin holes C and the process pin holes D are coaxial and parallel to the center lines of the connecting piece A and the connecting piece B; the sizes of the process hole A, the process hole B, the process pin hole C and the process pin hole D are consistent; and the centers of the four parts are consistent with the center distances between the centers of the corresponding helical tooth parts and the centers of the corresponding connecting parts; and (3) connecting the process hole A with the process pin hole C, and after connecting the process hole B with the process pin hole D, finely grinding the left-handed helical gear piece and the right-handed helical gear piece. The method only needs to perform centering measurement once, and avoids accumulated errors and human errors generated in the process of multiple times of centering.
Description
Technical Field
The invention relates to a machining method for centering high-speed precise transmission herringbone teeth and a gear thereof, belonging to the technical field of herringbone tooth machining.
Background
With the continuous development of modern industrial technology, the requirements on the performance of a planetary transmission system are higher and higher, and the herringbone gear planetary transmission is a symmetrical structure formed by two bevel gears which are completely symmetrical left and right due to the structural specificity of the herringbone gear planetary transmission. The herringbone tooth planetary transmission structure has the advantages of low vibration impact, low noise, capability of self-balancing axial component force of the helical gear and the like, so that the gear bearing capacity is stronger, the transmission is more stable, and the herringbone tooth planetary transmission structure is widely applied to industries such as aerospace, ships, mines, metallurgy and the like.
Centering error requirements of prior art requirements: the centering error is not higher than 0.5mm; the centering error with higher precision requires that the error is more than or equal to 0.2 and less than or equal to 0.5; the high-precision centering error requirement is less than 0.2mm; the ultra-high precision centering error is required to be less than 0.05mm.
Some high-speed high-precision special herringbone gear planetary transmission structures are required to meet the structural characteristics of the gear box while ensuring stable transmission, and therefore, the planetary transmission structure is only composed of two helical gears which are opposite in left-right rotation direction and are completely symmetrical. Because of the limitation of the machining process, machining one of the herringbone teeth is usually performed firstly, then centering the herringbone teeth, and machining the other herringbone teeth after centering errors are aligned; after the machining is completed and the herringbone tooth centering errors are aligned for the second time, the herringbone tooth centering errors are rechecked after the two parts are assembled. According to the method, the left-handed helical gear and the right-handed helical gear meet the design requirements of the drawing through repeated centering and alignment of the herringbone teeth and repeated checking of centering errors of the herringbone teeth. Although the method has certain universality for machining the herringbone tooth inner gear ring, accumulated errors and human errors are generated in the process of centering and rechecking for a plurality of times. The centering or rechecking result of a certain time is influenced by accumulated errors and human errors, so that the subsequent centering and rechecking result and the precision of the final product are influenced, and the requirement of high-precision centering errors is difficult to achieve.
Disclosure of Invention
The invention provides a processing method for centering a herringbone gear of a high-speed precise transmission, which eliminates the influence on the centering precision of the herringbone gear caused by errors generated by repeated centering and checking in the prior art, and the manufactured herringbone gear has high centering precision.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a processing method for high-speed precise transmission herringbone gear centering comprises the following steps: processing a process hole A on the end face of the left-handed helical gear assembly hole, and processing a process hole B on the end face of the right-handed helical gear assembly hole; the centers of the process hole A and the process hole B are respectively centered with the tooth top centers of the reference teeth J on the corresponding bevel gear piece; after the connecting piece A and the connecting piece B are assembled, processing a process pin hole C on the connecting piece A and processing a process pin hole D on the connecting piece B; the center lines of the process pin holes C and the process pin holes D are coaxial and parallel to the center lines of the connecting piece A and the connecting piece B; the sizes of the process hole A, the process hole B, the process pin hole C and the process pin hole D are consistent; and the centers of the four parts are consistent with the center distances between the centers of the corresponding helical tooth parts and the centers of the corresponding connecting parts; and after the process hole A and the process pin hole C are connected, the process hole B and the process pin hole D perform fine grinding on the left-handed helical gear piece and the right-handed helical gear piece.
Further, processing a process hole A on the end face of the left-handed helical gear assembly hole, and respectively performing preface processing on the left-handed helical gear and the right-handed helical gear before processing a process hole B on the end face of the right-handed helical gear assembly hole, wherein the preface processing comprises the steps of processing inner holes and tooth parts on the left-handed helical gear and the right-handed helical gear; when the preamble processing is carried out, the inner hole, the tooth width and the axial positioning dimension are kept consistent.
Further, the machining of the tooth portion specifically includes: and (3) carrying out rough grinding on the external teeth of the left-handed helical gear and the right-handed helical gear, and leaving a margin.
Further, the connecting piece A and the connecting piece B are webs, and the axial positioning sizes of the connecting piece A and the connecting piece B are consistent.
Further, the connecting piece A and the connecting piece B are assembled by adopting a fixed shaft, and the fixed shaft is coaxial with the connecting piece A and the connecting piece B.
Further, the process hole A and the process pin hole C are connected by adopting a cylindrical pin, and the process hole B and the process pin hole D are connected.
The invention aims to provide a processing method for centering high-speed precise transmission stable herringbone teeth, which adopts the steps of firstly processing two oblique gear rings independently, processing two process holes on the two oblique gear rings, and ensuring that the two process holes meet the centering requirement of tooth parts of the oblique gear rings; processing two process pin holes of the connected parts by processing parts connected with the two helical gear rings, and ensuring the coaxiality of the two process pin holes of the connected parts in the processing process; and assembling the two oblique gear rings and the connected parts, positioning and connecting the two oblique gear rings and the connected parts by using a tooling pin, finely grinding the teeth, and simplifying the centering processing difficulty of the herringbone teeth of the two oblique gear rings which are independently processed into the centering of the process holes on the two gear rings and the two connecting pieces. The method only needs to perform centering measurement once, avoids accumulated errors and human errors generated in the process of multiple centering, and can obtain the centering error of 0.1-0.15mm without adopting three-coordinate centering measurement.
The method can improve the working efficiency and ensure that the herringbone tooth part meets the requirement of drawing centering precision.
Drawings
FIG. 1 is a flow chart of a method for machining a high-speed precise transmission herringbone gear pair according to an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view of a midpoint of the tooth width of a left-handed helical tooth and a right-handed helical tooth according to the present invention;
FIG. 3 is an assembled schematic view of the connector according to the present invention;
FIG. 4 is a schematic view of the opening of the connector according to the present invention.
The device comprises a 1-left-handed helical gear, a 101-process hole A, a 2-right-handed helical gear, a 201-process hole B, a 3-connecting piece A, a 301-process pin hole C, a 4-connecting piece B, a 401-process pin hole D and a 5-fixed shaft.
Detailed Description
For a better understanding of the nature of the present invention, reference should be made to the following description of the invention taken in conjunction with the accompanying drawings.
The invention is suitable for processing external teeth of a combined herringbone gear ring comprising a left-handed helical gear piece and a right-handed helical gear piece, wherein a connecting piece is arranged between the left-handed helical gear piece and the right-handed helical gear piece, and particularly relates to a processing method for centering high-speed precise transmission herringbone gears, which comprises the following steps:
Step one, respectively processing a left-handed helical gear piece 1 and a right-handed helical gear piece 2, and ensuring that the inner holes, the tooth widths and the axial positioning sizes on the left-handed helical gear piece 1 and the right-handed helical gear piece 2 are consistent when the left-handed helical gear piece 1 and the right-handed helical gear piece 2 are added.
And step two, rough grinding is carried out on the external teeth of the left-handed helical gear piece 1 and the right-handed helical gear piece 2, and the tooth surfaces are rounded and the allowance is reserved.
Step three, processing a process hole A101 on the end surface of the assembly hole of the left-handed helical gear 1, and processing a process hole B201 on the end surface of the assembly hole of the right-handed helical gear 2; the centers of the process hole A101 and the process hole B201 are respectively centered with the tooth top centers of the reference teeth J on the left-hand helical gear piece 1 and the right-hand helical gear piece 2; the sizes of the process holes A101 and the process holes B201 are consistent; the center distance a 1 from the process hole A101 to the left-hand helical gear piece 1 is consistent with the center distance a 1 ', namely a 1= a1', from the process hole B201 to the right-hand helical gear piece 2. The corresponding relation between the two gear rings and the two process holes is shown in fig. 2. The specific value of the center distance a 1 is 166 (+ 0.025/-0.025).
And step four, machining the connecting piece A3 and the connecting piece B4. When the connecting piece A3 and the connecting piece B4 are processed, the axial positioning sizes of the connecting piece A3 and the connecting piece B4 are consistent. As a preferred embodiment of the present invention, the connecting members A3 and B4 are webs.
After the connecting piece A3 and the connecting piece B4 which are processed are assembled with the fixed shaft 5, the outer circle and the end face are ground, so that the outer circle on the connecting piece A3 and the outer circle on the connecting piece B4 are coaxial and the sizes are consistent.
After the outer circle is ground, the connecting piece A3 and the connecting piece B4 are kept in an assembled state with the fixed shaft 5, a process pin hole C301 is processed on the connecting piece A3, and a process pin hole D401 is processed on the connecting piece B4; the center lines of the process pin hole C301 and the process pin hole D401 are coaxial and parallel to the center lines of the connecting piece A3 and the connecting piece B4; the sizes of the process hole A101, the process hole B201, the process pin hole C301 and the process pin hole D401 are identical, as shown in FIG. 3.
The center distance B 1 between the process pin hole C301 and the connecting piece A3 is identical to the center distance B 1 ' between the process pin hole D401 and the connecting piece B4, and is identical to the center distances a 1 and a 1 ', namely a 1=a1'=b1=b1 '. The correspondence between the process pin hole C301 and the process pin hole D401 is shown in fig. 4.
Step five, connecting the process hole A101 with the process pin hole C301, the process hole B201 with the process pin hole D401 respectively, so that the left-handed helical gear 1, the right-handed helical gear 2, the connecting piece A3 and the connecting piece B4 are assembled, as shown in FIG. 1; and (5) fine grinding the teeth after the assembly is completed. The process hole a101 and the process pin hole C301, the process hole B201 and the process pin hole D401 may be connected by using matched cylindrical pins.
The herringbone tooth centering error obtained by the method is 0.1-0.15mm.
The invention simplifies the centering processing difficulty of the herringbone teeth of the two bevel gears which are independently processed into the centering of the two gear rings and the process holes on the two connecting pieces; and the process pin holes on the two coaxial connecting pieces are respectively connected with the process holes on the two helical gear rings in a positioning way through the tooling pin, so that accumulated centering deviation caused by centering the herringbone teeth of the two helical gear rings for multiple times is avoided, and the precise centering of the herringbone teeth is realized.
The method can ensure the centering accuracy requirement by only centering and metering the herringbone teeth once, avoid accumulated errors and personal errors generated in the process of multiple centering, and has simple working procedures, convenient manufacture and greatly improved working efficiency.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof, but rather as providing for the use of additional embodiments and advantages of all such modifications, equivalents, improvements and similar to the present invention are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (8)
1. The machining method for the high-speed precise transmission herringbone gear pair is characterized by comprising the following steps of:
Machining a process hole A (101) on the end face of the assembly hole of the left-handed helical gear (1), and machining a process hole B (201) on the end face of the assembly hole of the right-handed helical gear (2); the centers of the process hole A (101) and the process hole B (201) are respectively centered with the tooth top centers of the reference teeth J on the corresponding bevel gear parts;
after the connecting piece A (3) and the connecting piece B (4) are assembled, processing a process pin hole C (301) on the connecting piece A (3), and processing a process pin hole D (401) on the connecting piece B (4); the center lines of the process pin hole C (301) and the process pin hole D (401) are coaxial and parallel to the center lines of the connecting piece A (3) and the connecting piece B (4);
The sizes of the process hole A (101), the process hole B (201), the process pin hole C (301) and the process pin hole D (401) are consistent; and the centers of the four are consistent with the center distances of the centers of the corresponding helical tooth parts or the corresponding connecting parts;
And after the process hole A (101) is connected with the process pin hole C (301), the process hole B (201) is connected with the process pin hole D (401), the left-handed helical gear piece (1) and the right-handed helical gear piece (2) are subjected to fine grinding.
2. The machining method according to claim 1, characterized in that a process hole a (101) is machined in the end face of the assembly hole of the left-handed helical gear (1), and the left-handed helical gear (1) and the right-handed helical gear (2) are respectively subjected to a preceding machining before a process hole B (201) is machined in the end face of the assembly hole of the right-handed helical gear (2), the preceding machining comprising machining inner holes and tooth portions in the left-handed helical gear (1) and the right-handed helical gear (2); when the preamble processing is carried out, the inner hole, the tooth width and the axial positioning dimension are kept consistent.
3. The processing method according to claim 2, wherein the processing of the tooth portion is specifically: and (3) carrying out rough grinding on the external teeth of the left-handed helical gear piece (1) and the right-handed helical gear piece (2) and leaving a margin.
4. The processing method according to claim 1, characterized in that: the center distance is 166+/-0.025.
5. The processing method according to claim 1, characterized in that: the connecting piece A (3) and the connecting piece B (4) are webs, and the axial positioning sizes of the connecting piece A and the connecting piece B are consistent.
6. The processing method according to claim 1, characterized in that: the connecting piece A (3) and the connecting piece B (4) are assembled by adopting the fixed shaft (5), and the fixed shaft (5) is coaxial with the connecting piece A (3) and the connecting piece B (4).
7. The processing method according to claim 1, characterized in that: the process hole A (101) and the process pin hole C (301), and the process hole B (201) and the process pin hole D (401) are connected by adopting cylindrical pins.
8. A high-speed precision transmission herringbone gear, characterized in that the herringbone gear is prepared by the processing method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410007191.8A CN118080990A (en) | 2024-01-03 | 2024-01-03 | Machining method for centering high-speed precise transmission herringbone teeth and gear thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410007191.8A CN118080990A (en) | 2024-01-03 | 2024-01-03 | Machining method for centering high-speed precise transmission herringbone teeth and gear thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118080990A true CN118080990A (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410007191.8A Pending CN118080990A (en) | 2024-01-03 | 2024-01-03 | Machining method for centering high-speed precise transmission herringbone teeth and gear thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118080990A (en) |
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2024
- 2024-01-03 CN CN202410007191.8A patent/CN118080990A/en active Pending
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