CN111425584A - Noise eliminating method suitable for gear transmission noise of separating type speed reducer - Google Patents
Noise eliminating method suitable for gear transmission noise of separating type speed reducer Download PDFInfo
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- CN111425584A CN111425584A CN202010356348.XA CN202010356348A CN111425584A CN 111425584 A CN111425584 A CN 111425584A CN 202010356348 A CN202010356348 A CN 202010356348A CN 111425584 A CN111425584 A CN 111425584A
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- noise
- gear
- joint surface
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- box body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
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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
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H2057/0068—Repairing of transmissions by using repair kits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02017—Gearboxes; Mounting gearing therein characterised by special features related to the manufacturing of the gear case, e.g. special adaptations for casting
Abstract
The invention discloses a noise elimination method for gear transmission noise of a separate speed reducer, which comprises the following steps: step S1: identifying gear transmission noise; step S2: analyzing the corresponding reasons of the gear transmission noise; step S3: adaptive processing is performed to eliminate the noise based on the cause of gear noise generation analyzed in step S2. The invention identifies the noise generated in the gear transmission process, thereby pertinently judging the reason of the noise generation, and then adaptively adjusting to eliminate the noise, thereby improving the pertinence and the efficiency of eliminating the noise in the noise elimination process.
Description
Technical Field
The invention relates to the technical field of transmission machinery, in particular to a noise elimination method suitable for gear transmission noise of a separate speed reducer.
Background
The structure of a common speed reducer of a split-type speed reducer comprises a box body and a box cover which are suitable for matching, and in practical use, due to the fact that the structure is subjected to load action, gear abrasion, pitting corrosion, gluing and plastic deformation are easily caused, and basic parts such as the box body and the box cover are deformed, the speed reducer is often subjected to large gear transmission noise, and noise pollution is caused.
However, the noise generated by the separate type speed reducer can be generated by various reasons, the noise can be eliminated in a differentiated manner only by grasping the difference of the noise corresponding to different reasons, the processing efficiency of noise elimination is directly influenced by fast and accurate judgment of the noise, and the delay of the noise elimination processing process due to an incorrect processing method is avoided.
Disclosure of Invention
The invention aims to provide a noise elimination method for gear transmission noise of a separate speed reducer, which aims to solve the technical problem of improving the noise elimination efficiency of gear transmission.
The invention discloses a noise elimination method for gear transmission noise of a separate speed reducer, which is realized by the following steps:
a noise elimination method for gear transmission noise of a separation type speed reducer comprises the following steps:
step S1: identifying gear transmission noise;
step S2: analyzing the corresponding reasons of the gear transmission noise;
step S3: adaptive processing is performed to eliminate the noise based on the cause of gear noise generation analyzed in step S2.
In a preferred embodiment of the present invention, the gear noise in step S1 includes:
s11: noise appears continuously;
s12; the noise appears intermittently and is crisp impact sound;
s13; the noise as a whole exists unevenly with respect to the separate type speed reducer.
In the preferred embodiment of the present invention, the reasons for the generation of the gear noise corresponding to the different gear ratios in step S2 include:
s21: the noise for S11 continues to occur as a result of the at least one gear tooth crest and tooth root being crushed against each other;
s22: the impact sound which intermittently appears to the noise of S12 and is crisp is caused by scars or adhering dirt on at least one of the tooth surfaces which are engaged with each other;
s23: in S13, the overall noise of the split type reduction gear is uneven, and the teeth are unevenly contacted at the tooth end due to the deviation of the tooth bevel angle of the bevel gear, or the teeth are unevenly contacted at the tooth end due to the deformation and warpage of the joint surface of the case body and the case cover of the split type reduction gear.
In the preferred embodiment of the present invention, the adaptive processing of the cause of gear noise generated in step S3 based on the analysis in step S2 includes:
step S31: extruding and grinding the tooth top and the tooth root of at least one gear in S21, taking out the corresponding gear, and blunting the sharp angle of the tooth top of the gear by using a fine file;
step S32: for at least one tooth surface meshed with each other of S22, removing scars or adhered dirt, taking out the corresponding gear, and filing the scars or dirt by using a fine file or an oilstone;
step S32: shifting the tooth bevel angles of the helical gear of S23 so that the contact of the teeth is shifted to the tooth end part, and taking out the helical gear to replace a new helical gear; and (5) trimming the joint surface of the box body and the box cover of the split type speed reducer of S23 to eliminate the deformation warpage.
In a preferred embodiment of the present invention, for the distortion and warpage of the joint surface of the case and the case cover of the split type speed reducer of S23, the trimming step of the joint surface of the case and the case cover includes:
step S321: the depth of a joint surface of the semi-finish milling box cover is 1.2-1.5 mm, and the depth of the joint surface of the semi-finish milling box body is 1.2-1.5 mm;
step S322: aging treatment is carried out to eliminate internal stress;
step S323: the depth of a joint surface of the finish-milled box cover is about 0.3-0.5 mm, and the depth of the joint surface of the finish-milled box body is 0.3-0.5 mm; milling a joint surface to reduce a bearing hole for matching the box cover and the box body;
step S324: scraping the joint surface of the box cover and the joint surface of the box body; combining and grinding a joint surface of the box cover and the box body and scraping the joint surface; the number of scraping contact points is not less than 20 points per square inch;
step S325: aligning the box cover and the box body to the box, and fastening and connecting the box cover and the box body after the box is closed by using bolt holes, bolts and nuts; the bearing hole formed after the box combination is changed into an elliptical hole;
step S326: semi-finish boring a bearing hole;
step S327: and finely boring the bearing hole to a required size.
By adopting the technical scheme, the invention has the following beneficial effects: the noise elimination method for the gear transmission noise of the separated speed reducer identifies the noise generated in the gear transmission process, thereby pertinently judging the reason of the noise generation, and then adaptively adjusting to eliminate the noise, thereby improving the pertinence and the noise elimination efficiency in the noise elimination process.
Furthermore, for the noise generated by the deformation and warpage of the joint surface of the box cover and the box body, the general separating type speed reducer has no spare box cover and box body for long-term storage, so that the invention utilizes the 10 mm gap between the tooth top excircle of the large gear in the original separating type speed reducer and the bottom surface of the inner cavity of the box body, and the 10 mm gap between the tooth top excircle of the large gear in the separating type speed reducer and the top surface of the inner cavity of the box cover to eliminate the deformation of the joint surface of the box cover and the box body without influencing the operation of the large gear arranged in the repaired box body and the box cover, thereby not only achieving the purpose of quickly eliminating the noise, but also avoiding the problem of overhigh cost caused by replacing a new box body and the box cover by the condition of repairing the joint surface of the box.
Drawings
Fig. 1 is a schematic structural view of a split type reduction gear of the present invention.
In the figure: the box body 1, the box cover 2 and the bearing hole 3.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Referring to fig. 1, the present embodiment provides a method for eliminating gear noise of a split type speed reducer, including:
step S1: identifying gear transmission noise; step S2: analyzing the corresponding reasons of the gear transmission noise; step S3: adaptive processing is performed to eliminate the noise based on the cause of gear noise generation analyzed in step S2.
Specifically, the gear noise in step S1 mainly includes the following three types in general:
s11: noise appears continuously; s12; the noise appears intermittently and is crisp impact sound; s13; the noise as a whole exists unevenly with respect to the separate type speed reducer.
In the case that the noise of S11 continuously occurs due to the mutual grinding of the tooth crest and the tooth root of at least one gear, the corresponding noise can be eliminated by taking out the gear by a fitter and blunting the sharp corner of the tooth crest by a fine file. In general, since a gear is generally used as a stock in a large-sized machine, the noise cannot be eliminated even when a fitter blunts a sharp corner of a tooth tip with a file, that is, the noise cannot be eliminated by replacing the gear.
The impact sound which intermittently appears to the noise of S12 and is crisp is caused by scars or adhering dirt on at least one of the tooth surfaces which are engaged with each other; in such a case, a bench worker only needs to take out the gear, and then a fine file or an oilstone file is used for removing scars or dirt, so that the impact sound can be eliminated.
S23: in S13, the overall noise of the separate type reduction gear is uneven, and the tooth contact is deviated at the tooth end due to the deviation of the tooth bevel angle of the bevel gear, or the tooth contact is deviated at the tooth end due to the deformation and warpage of the joint surface of the case 1 and the case cover 2 of the separate type reduction gear. In the case of noise caused by the fact that the tooth oblique angles of the helical gears are deviated and the contact of the teeth is deviated at the end parts of the teeth, a pair of helical gears needs to be replaced to achieve the purpose of eliminating the noise. In the case of noise caused by the fact that the joint surfaces of the box body 1 and the box cover 2 of the separate type speed reducer are deformed and warped, and the contact of teeth is deviated to the end parts of the teeth, the joint surfaces of the box body 1 and the box cover 2 are deformed and warped, the box body 1 and the box cover 2 are basic parts of the separate type speed reducer, and the manufacturing of the box body 1 and the box cover 2 needs two months from drawing preparation, casting, aging treatment and mechanical processing. And as for the case body 1 and the cover 2, even for a general large-scale mechanical device, there is no case body 1 and cover 2 as stock spare parts, and it may take several days for the supplier to send them if the case body 1 and cover 2 as replacement parts are to be replaced, so that not only waiting is needed, but also the replacement of a new case body 1 and cover 2 causes an increase in use cost.
Therefore, as for the distortion and warpage of the joint surface of the case 1 and the case cover 2 of the separate type reduction gear, the present embodiment trims the joint surface of the case 1 and the case cover 2 to eliminate the distortion and warpage.
Specifically, a clearance of 10 mm is formed between the outer circle of the tooth top of the large gear in the separate reducer and the bottom surface of the inner cavity of the box body 1, and a clearance of 10 mm is formed between the outer circle of the tooth top of the large gear in the separate reducer and the top surface of the inner cavity of the box cover 2, so that the purpose of eliminating noise can be achieved by utilizing the clearance between the outer circle of the tooth top of the large gear and the top surfaces of the inner cavities of the box body 1 and the box cover 2 and trimming the joint surface of the box body 1 and the box cover 2 to eliminate the deformation of the joint surface of the box body 1 and the box cover 2.
Specifically, the finishing of the joint surface of the case 1 and the case cover 2 includes the steps of:
step S321: the depth of a joint surface of the semi-finish milling box cover 2 is 1.2-1.5 mm, and the depth of a joint surface of the semi-finish milling box cover 1 is 1.2-1.5 mm;
step S322: aging treatment is carried out to eliminate internal stress;
step S323: the depth of a joint surface of the finish-milling box cover 2 is about 0.3-0.5 mm, and the depth of a joint surface of the finish-milling box body 1 is 0.3-0.5 mm; milling a joint surface to reduce a bearing hole 3 matched with the box cover 2 and the box body 1; step S324: scraping the joint surface of the box cover 2 and the joint surface of the box body 1; the box cover 2 and the box body 1 are combined and ground into a combined surface and scraped; the number of scraping contact points is not less than 20 points per square inch; the flatness precision of the joint surfaces is high, so that no gap exists between the joint surfaces after the box cover 2 and the box body 1 are combined;
step S325: aligning the box cover 2 and the box body 1 to a box, and fastening and connecting the box cover 2 and the box body 1 after the box is closed by using bolt holes, bolts and nuts; at this time, the bearing hole 3 formed by matching the box body 1 and the box cover 2 is changed from an initial circle to an elliptical hole, and the diameter of the bearing hole 3 is successfully reduced;
step S327: finely boring the bearing hole 3 to a required size and ensuring the position precision; thus, the corresponding hole distances of the two sides of the box body 1 and the box cover 2 are ensured to be consistent and meet the specified tolerance. Step S326: semi-finish boring a bearing hole 3;
the noise elimination method for the gear transmission noise of the separated speed reducer identifies the noise generated in the gear transmission process, thereby pertinently judging the reason of the noise generation, and then adaptively adjusting to eliminate the noise, thereby improving the pertinence and the noise elimination efficiency in the noise elimination process.
Further, for the noise generated by the deformation and warpage of the joint surface of the box cover 2 and the box body 1, a common separating type speed reducer has no spare box cover 2 and box body 1 for long-term storage, so that the invention utilizes the 10 mm gap between the tooth top excircle of the large gear in the original separating type speed reducer and the bottom surface of the inner cavity of the box body 1 and the 10 mm gap between the tooth top excircle of the large gear in the separating type speed reducer and the top surface of the inner cavity of the box cover 2 to eliminate the deformation of the joint surface of the box cover 2 and the box body 1 without influencing the operation of the large gear arranged in the repaired box body 1 and the box cover 2, thereby not only achieving the purpose of quickly eliminating the noise, but also avoiding the problem of overhigh cost existing in replacing the box body 1 and the box cover 2 by the condition of repairing the joint surface of the box body 1 and.
The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (5)
1. A method for canceling gear drive noise for a split-type reduction gear, comprising:
step S1: identifying gear transmission noise;
step S2: analyzing the corresponding reasons of the gear transmission noise;
step S3: adaptive processing is performed to eliminate the noise based on the cause of gear noise generation analyzed in step S2.
2. The method for canceling gear drive noise of a separation type speed reducer according to claim 1, wherein the gear drive noise in the step S1 includes:
s11: noise appears continuously;
s12; the noise appears intermittently and is crisp impact sound;
s13; the noise as a whole exists unevenly with respect to the separate type speed reducer.
3. The method for canceling gear drive noise of a separate type speed reducer according to claim 2, wherein the cause of the generation of the gear drive noise corresponding to the difference at step S2 includes:
s21: the noise for S11 continues to occur as a result of the at least one gear tooth crest and tooth root being crushed against each other;
s22: the impact sound which intermittently appears to the noise of S12 and is crisp is caused by scars or adhering dirt on at least one of the tooth surfaces which are engaged with each other;
s23: in S13, the overall noise of the split type reduction gear is uneven, and the teeth are unevenly contacted at the tooth end due to the deviation of the tooth bevel angle of the bevel gear, or the teeth are unevenly contacted at the tooth end due to the deformation and warpage of the joint surface of the case body and the case cover of the split type reduction gear.
4. The method for eliminating the gear transmission noise of the separate type speed reducer according to claim 3, wherein the step S3 is adaptively processed based on the reason for the gear transmission noise analyzed in the step S2, and comprises the following steps:
step S31: extruding and grinding the tooth top and the tooth root of at least one gear in S21, taking out the corresponding gear, and blunting the sharp angle of the tooth top of the gear by using a fine file;
step S32: for at least one tooth surface meshed with each other of S22, removing scars or adhered dirt, taking out the corresponding gear, and filing the scars or dirt by using a fine file or an oilstone;
step S32: shifting the tooth bevel angles of the helical gear of S23 so that the contact of the teeth is shifted to the tooth end part, and taking out the helical gear to replace a new helical gear; and (5) trimming the joint surface of the box body and the box cover of the split type speed reducer of S23 to eliminate the deformation warpage.
5. The method for canceling noise of gear drive noise of a separate type reduction gear according to claim 4, wherein the step of trimming the joint surface of the case and the case cover for the distortion and warpage of the joint surface of the case and the case cover of the separate type reduction gear of S23 includes:
step S321: the depth of a joint surface of the semi-finish milling box cover is 1.2-1.5 mm, and the depth of the joint surface of the semi-finish milling box body is 1.2-1.5 mm;
step S322: aging treatment is carried out to eliminate internal stress;
step S323: the depth of a joint surface of the finish-milled box cover is about 0.3-0.5 mm, and the depth of the joint surface of the finish-milled box body is 0.3-0.5 mm; milling a joint surface to reduce a bearing hole for matching the box cover and the box body;
step S324: scraping the joint surface of the box cover and the joint surface of the box body; combining and grinding a joint surface of the box cover and the box body and scraping the joint surface; the number of scraping contact points is not less than 20 points per square inch;
step S325: aligning the box cover and the box body to the box, and fastening and connecting the box cover and the box body after the box is closed by using bolt holes, bolts and nuts; the bearing hole formed after the box combination is changed into an elliptical hole;
step S326: semi-finish boring a bearing hole;
step S327: and finely boring the bearing hole to a required size.
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| CN202010356348.XA CN111425584A (en) | 2020-04-29 | 2020-04-29 | Noise eliminating method suitable for gear transmission noise of separating type speed reducer |
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| CN202010356348.XA CN111425584A (en) | 2020-04-29 | 2020-04-29 | Noise eliminating method suitable for gear transmission noise of separating type speed reducer |
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