CN108627074B - Main reducer driving and driven bevel gear meshing clearance measuring device and measuring method - Google Patents
Main reducer driving and driven bevel gear meshing clearance measuring device and measuring method Download PDFInfo
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- CN108627074B CN108627074B CN201810579391.5A CN201810579391A CN108627074B CN 108627074 B CN108627074 B CN 108627074B CN 201810579391 A CN201810579391 A CN 201810579391A CN 108627074 B CN108627074 B CN 108627074B
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 125000006850 spacer group Chemical group 0.000 claims abstract description 14
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000012549 training Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention belongs to the field of test tools and particularly relates to a device and a method for measuring meshing clearance of a main reducer driving bevel gear and a driven bevel gear. The device comprises a connecting bolt, a measuring bracket, a fixed rod, a spacer bush, a positioning block, a locking nut, a bracket fixing nut, a C-shaped fixed supporting frame, an assembly fixing screw rod, a flange fixing bolt and a dial indicator; the invention solves the problem of the gear meshing clearance of the split-shell main reducer of the passenger car, completes the transfer from the gear meshing inside the shell to the external measurement, reduces the measurement difficulty and improves the measurement precision. And the requirement on the measuring difficulty of operators is reduced, so that operators of the production line can complete gap measuring work through simple training, and the assembly precision and the assembly efficiency of the assembly are improved.
Description
Technical Field
The invention belongs to the field of test tools and particularly relates to a device and a method for measuring meshing clearance of a main reducer driving bevel gear and a driven bevel gear.
Background
The existing luxury sedan or off-road vehicle is mostly front-mounted rear-mounted or four-mounted, the sedan is required to ensure the comfort of the whole vehicle, the off-road vehicle is required to ensure the comfort of the whole vehicle, so that the requirement on the meshing precision of the transmission gears in the rear axle is higher, if the meshing clearance of the gears is larger, larger noise is generated in the whole transmission process, and meanwhile, the gears are damaged due to knocking among the gears, so that the service life of the gears is shortened; if the gear meshing clearance is smaller, the gear is not stable in the transmission process, and the heat generated in the operation process is overlarge, so that the gear has bad working conditions such as ablation and the like, and therefore, the reasonable gear meshing clearance is very important for the whole transmission system.
When the split shell type main speed reducer assembly measures the gear meshing clearance, as the structural form is different from that of the common main speed reducer assembly, when the conventional main speed reducer assembly measures the main and auxiliary bevel gear meshing clearance, a dial indicator contact is directly and vertically abutted against the tooth top position of the large end of the driven bevel gear, an input flange is fixed, the driven bevel gear is rotated clockwise or anticlockwise, and when the front and rear bevel gears are contacted with each other respectively, the dial indicator records the reading of the dial indicator in the front and rear rotation process, the reading is generally regarded as the static meshing clearance of the main and auxiliary bevel gears, and the split shell type main speed reducer assembly can not directly measure the meshing clearance of the main and auxiliary bevel gears by using a measuring instrument from outside because the whole main and auxiliary bevel gears are arranged in a shell.
By searching the patent document, the tool auxiliary tool and the method for measuring the gear meshing clearance of the main speed reducer assembly of the type are not found, and the testing method introduced in the method for measuring the gear meshing clearance of the sealed cavity internal gear with the patent number of CN2001036107.6 is not suitable for measuring the gear meshing clearance of the main speed reducer assembly.
Disclosure of Invention
The invention provides a device and a method for measuring meshing clearance of a main reducer driving bevel gear and a driven bevel gear, which are simple in structure, and solve the problem that the meshing clearance of gears cannot be directly measured by an instrument in the existing market.
The technical scheme of the invention is as follows in combination with the accompanying drawings:
the device comprises a connecting bolt 1, a measuring bracket 2, a fixed rod 3, a spacer bush 4, a positioning block 5, a locking nut 6, a bracket fixing nut 7, a C-shaped fixing support frame 8, an assembly fixing screw 9, a flange fixing bolt 11 and a dial indicator 12; the measuring bracket 2 is vertical to the fixed rod 3 and is fixed by the connecting bolt 1; the spacer bush 4 is propped against the differential mechanism assembly of the main speed reducer assembly 10 to be tested and sleeved outside the U-shaped groove at one end of the fixed rod 3; the positioning block 5 is inserted into the U-shaped groove at one end of the fixed rod 3 and is propped against one end of the spacer bush 4; the positioning block 5 is fixed with the external thread of the fixed rod 3 through a locking nut 6; the U-shaped groove at one end of the fixed rod 3 penetrates through the gear shaft of the main speed reducer assembly 10 to be tested; the middle part of the main speed reducer assembly 10 to be tested is fixed in the middle part of the C-shaped fixed support frame 8 through an assembly fixing screw rod 9; the upper ends of the main speed reducer assemblies 10 to be tested are respectively fixed at the upper ends of the C-shaped fixed support frames 8 through flange fixing bolts 11; the lower end of the main speed reducer assembly 10 to be tested is fixed on a C-shaped fixed support frame 8 through a support fixing nut 7; the magnetic meter seat of the dial indicator 12 is absorbed on the horizontal panel, the contact vertically props against the scale mark position of the measuring bracket 2, and the scale mark is the scale circle position of the driven bevel gear of the main speed reducer assembly 10 to be measured, which is equivalent to the position of connecting the driven bevel gear to the measuring bracket 2.
The measuring bracket 2 is provided with a spigot which is positioned and assembled with the fixed rod 3.
A method for measuring a meshing clearance of a main reducer driving bevel gear and a driven bevel gear, the method comprising the following steps:
step one, fixing a main speed reducer assembly 10 to be tested on a C-shaped fixed support frame 8 by using an assembly fixing bolt 9, wherein a U-shaped groove is formed in a fixing rod 3, so that the U-shaped groove penetrates through a gear shaft of the main speed reducer assembly 10;
secondly, propping up against a differential mechanism assembly of the main speed reducer assembly 10 by using a spacer bush 4 and sleeving the differential mechanism assembly on the fixed rod 3, and inserting a positioning block 5 into a U-shaped groove of the fixed rod 3;
step three, tightening the locking nut 6, and fixing the measuring device and the differential mechanism assembly into a whole, so that the measuring device is firm and stable; the measuring bracket 2 is screwed on the fixed rod 3 through the connecting bolt 1;
fourthly, fixing the assembly flange on the fixed support frame 8 through a flange fixing bolt 11;
step five, sucking the magnetic meter seat of the dial indicator 12 on a horizontal panel, rotating the measuring bracket 2 clockwise when the pointer at the position of the measuring mark is made until the gear can not rotate to read the numerical value X, rotating the measuring bracket 2 anticlockwise until the gear is completely meshed and can not rotate, reading the numerical value Y, and calculating the absolute value of the difference value |X-Y| of the two numerical values, wherein the absolute value is the meshing gap of the driving bevel gear and the driven bevel gear of the main reducer assembly; the dial indicator 12 contacts are to be tested with four contacts on the measuring bracket 2 respectively, the test results are averaged, or one of the four contacts is selected as a measuring target, the test is performed along the axis direction of the fixed rod 3 at 120-degree intervals respectively, and the average value is calculated from the three test results.
The width of the U-shaped groove at one end of the fixed rod 3 is 3-5 mm larger than the diameter of the planetary gear shaft inside the assembly 10 to be tested.
When the medical adhesive tape is used in a test, a layer of wear-resistant material is required to be wound on the outer surface of the fixing rod 3, and the medical adhesive tape can be used.
The beneficial effects of the invention are as follows:
1. the invention solves the problem of the gear meshing clearance of the split-shell main reducer of the passenger car, completes the transfer from the gear meshing inside the shell to the external measurement, reduces the measurement difficulty and improves the measurement precision. And the requirement on the measuring difficulty of operators is reduced, so that operators of the production line can complete gap measuring work through simple training, and the assembly precision and the assembly efficiency of the assembly are improved.
2. The invention solves the problem of incapability of accurate measurement, optimizes the assembly process, reduces the labor intensity, and reduces the assembly working time of the assembly from original 2 hours to 45 minutes at present, thereby reducing the gear clearance adjustment time by about 50 percent. The device simple structure is convenient for production line or trial production assembly and is used, can improve on-the-spot assembly adjustment efficiency, and the application effect is good.
Drawings
FIG. 1 is a schematic illustration of the present invention when not mounted to a final drive assembly;
FIG. 2 is a front view of a measuring bracket of the present invention;
FIG. 3 is a cross-sectional view of a fixing rod according to the present invention;
FIG. 4 is a schematic view of the present invention mounted on a final drive assembly.
In the figure: 1. a connecting bolt; 2. measuring a bracket; 3. a fixed rod; 4. a spacer bush; 5. a positioning block; 6. a lock nut; 7. a bracket fixing nut; 8. c-shaped fixed support frames; 9. an assembly fixing screw; 10. a main speed reducer assembly to be tested; 11. flange fixing bolts; 12. and (5) a dial indicator.
Detailed Description
Referring to fig. 1 and 4, the device for measuring the meshing clearance of a driving bevel gear and a driven bevel gear of a split-type main speed reducer comprises a connecting bolt 1, a measuring bracket 2, a fixed rod 3, a spacer bush 4, a positioning block 5, a locking nut 6, a bracket fixing nut 7, a C-shaped fixing support frame 8, an assembly fixing screw 9, a flange fixing bolt 11 and a dial indicator 12.
Referring to fig. 1, the measuring bracket 2 is fixed on the fixed rod 3 through a connecting bolt 1, and the spacer bush 4 is sleeved outside the U-shaped groove of the fixed rod 3; the positioning block 5 is inserted into the U-shaped groove of the fixed rod 3 and is propped against the left end of the spacer bush 4; the locking nut 6 is used for fixing the positioning block 5 in the U-shaped groove of the fixed rod 3 through threads at the outer end of the fixed rod 3 to form a whole.
Referring to fig. 2, marks are marked on the measuring bracket 2, and the marked points are marked points of the pitch circle diameter of the driven bevel gear of the main speed reducer assembly; the reverse side of the measuring bracket is provided with a spigot which is convenient for positioning and assembling with the fixed rod 3.
Referring to fig. 3, the left end of the fixing rod 3 is provided with a U-shaped groove structure; the left end is provided with external threads which are matched and connected with the locking nut 6.
The magnetic meter seat of the dial indicator 12 is absorbed on the horizontal panel, the contact vertically abuts against the scale mark position of the measuring bracket 2, the scale mark is the scale circle position of the driven bevel gear of the main speed reducer assembly 10 to be measured, the position is equivalent to externally connecting the driven bevel gear to the measuring bracket, and the measuring accuracy is improved.
Referring to fig. 4, a main speed reducer assembly 10 to be tested is fixed on a C-shaped fixed support frame 8 by an assembly fixing bolt 9, and a U-shaped groove is formed on a fixing rod 3, so that the U-shaped groove penetrates through a gear shaft of the main speed reducer assembly 10; at the moment, the spacer bush 4 is propped against the differential mechanism assembly of the main speed reducer assembly 10 and sleeved on the fixed rod 3, and the positioning block 5 is inserted into the U-shaped groove of the fixed rod 3 to play a role in fixing and supporting; tightening the lock nut 6, and fixing the measuring device and the differential mechanism assembly into a whole, so that the measuring device is firm and stable; the measuring bracket 2 is screwed on the fixed rod 3 through the connecting bolt 1; the assembly flange is fixed on the C-shaped fixed support frame 8 through a flange fixing bolt 11; the magnetic meter seat of the dial indicator 12 is absorbed on a horizontal panel, the pointer at the meter head indicates the position where the measurement mark is made, the measurement bracket 2 is rotated clockwise until the gear can not rotate to read the numerical value X, the measurement bracket 2 is rotated anticlockwise until the gear is completely engaged and can not rotate, the read numerical value is Y, and the absolute value of the difference value |X-Y| of the two numerical values is calculated, wherein the absolute value is the engagement gap between the main bevel gear and the driven bevel gear of the main reducer assembly. The dial indicator 12 contacts are to be tested with four contacts on the measuring bracket 2 respectively, the test results are averaged, or one of the four contacts is selected as a measuring target, the test is performed along the axis direction of the fixed rod 3 at 120-degree intervals respectively, and the average value is calculated from the three test results.
The width of the U-shaped groove at one end of the fixed rod 3 is 3-5 mm larger than the diameter of the planetary gear shaft inside the assembly 10 to be tested. When the clamp is used for measuring, the clamp is prevented from knocking against a planetary wheel shaft or other parts;
during test use, a layer of wear-resistant material is required to be wound on the outer surface of the fixing rod 3, and medical adhesive tapes and the like can be used, so that when metal parts are prevented from contacting, rust generated by friction enters the inside of the sample assembly 10 to be tested, the use of the sample to be tested is affected, and meanwhile scratches and the like generated by parts of the sample to be tested are also avoided.
The above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The device is characterized by comprising a connecting bolt (1), a measuring bracket (2), a fixed rod (3), a spacer bush (4), a positioning block (5), a locking nut (6), a bracket fixing nut (7), a C-shaped fixed support frame (8), an assembly fixing screw (9), a flange fixing bolt (11) and a dial indicator (12); the measuring bracket (2) is perpendicular to the fixed rod (3) and is fixed by the connecting bolt (1); the spacer bush (4) is propped against the differential mechanism assembly of the main speed reducer assembly (10) to be tested and sleeved outside the U-shaped groove at one end of the fixed rod (3); the positioning block (5) is inserted into a U-shaped groove at one end of the fixed rod (3) and is propped against one end of the spacer bush (4); the positioning block (5) is fixed with the external thread of the fixed rod (3) through a locking nut (6); the U-shaped groove at one end of the fixed rod (3) penetrates through the gear shaft of the main speed reducer assembly (10) to be tested; the middle part of the main speed reducer assembly (10) to be tested is fixed at the middle part of the C-shaped fixed support frame (8) through an assembly fixing screw rod (9); the upper end of the main speed reducer assembly (10) to be tested is fixed at the upper end of the C-shaped fixed support frame (8) through flange fixing bolts (11) respectively; the lower end of the main speed reducer assembly (10) to be tested is fixed on a C-shaped fixed support frame (8) through a support fixing nut (7); the magnetic meter seat of the dial indicator (12) is absorbed on the horizontal panel, the contact vertically props against the scale mark position of the measuring bracket (2), and the scale mark is the scale circle position of the driven bevel gear of the main speed reducer assembly (10) to be measured and is equivalent to the position of connecting the driven bevel gear to the measuring bracket (2) outside; the measuring bracket (2) is provided with a spigot which is positioned and assembled with the fixed rod (3); the measuring method of the device comprises the following steps:
step one, fixing a main speed reducer assembly (10) to be tested on a C-shaped fixed support frame (8) by using an assembly fixing screw rod (9), wherein a U-shaped groove is formed in the fixing rod (3) so that the U-shaped groove penetrates through a gear shaft of the main speed reducer assembly (10);
secondly, abutting against a differential mechanism assembly of a main speed reducer assembly (10) by using a spacer bush (4) and sleeving the differential mechanism assembly on a fixed rod (3), and inserting a positioning block (5) into a U-shaped groove of the fixed rod (3);
step three, tightening a locking nut (6), and fixing the measuring device and the differential mechanism assembly into a whole, so that the measuring device is firm and stable; the measuring bracket (2) is screwed on the fixed rod (3) through the connecting bolt (1);
fixing the assembly flange on the fixed support frame (8) through a flange fixing bolt (11);
step five, sucking the magnetic meter seat of the dial indicator (12) on a horizontal panel, rotating the measuring bracket (2) clockwise at the position where the measuring mark is made by the pointer at the head of the meter until the gear cannot rotate and read the numerical value X, rotating the measuring bracket 2 anticlockwise until the gear is completely meshed and cannot rotate, reading the numerical value Y, and calculating the absolute value of the difference value |X-Y| of the two numerical values, wherein the absolute value is the meshing gap of the driving bevel gear and the driven bevel gear of the main speed reducer assembly; the dial indicator (12) contacts are respectively tested with four contacts on the measuring support (2), the test results are averaged, or one of the four contacts is selected as a measuring target, the test is respectively carried out along the axis direction of the fixed rod (3) at 120-degree intervals, and the average value is calculated according to the test results of three times.
2. The device for measuring the meshing clearance of the main reducer main driven bevel gear according to claim 1, wherein the width of the U-shaped groove at one end of the fixed rod (3) is 3-5 mm larger than the diameter of the planetary gear shaft inside the main reducer assembly (10) to be measured.
3. The device for measuring the meshing clearance of the main reducer driving and driven bevel gears according to claim 1 is characterized in that a layer of wear-resistant material is required to be wound on the outer surface of the fixed rod (3) during test use, and medical adhesive tapes are used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810579391.5A CN108627074B (en) | 2018-06-07 | 2018-06-07 | Main reducer driving and driven bevel gear meshing clearance measuring device and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810579391.5A CN108627074B (en) | 2018-06-07 | 2018-06-07 | Main reducer driving and driven bevel gear meshing clearance measuring device and measuring method |
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| Publication Number | Publication Date |
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| CN108627074A CN108627074A (en) | 2018-10-09 |
| CN108627074B true CN108627074B (en) | 2024-01-12 |
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| CN201810579391.5A Active CN108627074B (en) | 2018-06-07 | 2018-06-07 | Main reducer driving and driven bevel gear meshing clearance measuring device and measuring method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823069B (en) * | 2019-10-29 | 2021-02-26 | 中国航发沈阳黎明航空发动机有限责任公司 | Inspection tool and inspection method for gear clearance of transmission part of rotating speed sensor |
| CN111089530B (en) * | 2019-12-28 | 2022-08-12 | 深圳市越疆科技有限公司 | Measuring device and measuring method for return clearance of planetary gear motor |
| CN111173891B (en) * | 2020-01-10 | 2022-03-01 | 重庆齿轮箱有限责任公司 | Bevel gear box and box body thereof and mounting and adjusting method of bevel gear box |
| CN113418696B (en) * | 2021-05-27 | 2023-04-11 | 中国航发南方工业有限公司 | Engaging detection tool structure for master-slave bevel gear in turbine shaft engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04240502A (en) * | 1991-01-25 | 1992-08-27 | Nissan Motor Co Ltd | Measuring device of mesh gap of differential gear |
| CN101256066A (en) * | 2008-04-16 | 2008-09-03 | 沪东重机有限公司 | Apparatus and method for measuring meshing gear interspace in closed chamber |
| CN103900812A (en) * | 2013-10-29 | 2014-07-02 | 徐州徐工随车起重机有限公司 | Device for detecting assembly of meshing gears in crane rotary table |
| CN107576250A (en) * | 2017-08-23 | 2018-01-12 | 中航飞机起落架有限责任公司 | The back lash detection means and detection method of a kind of aircraft steering gear bevel gear pair |
| CN208458631U (en) * | 2018-06-07 | 2019-02-01 | 中国第一汽车股份有限公司 | A kind of main reducing gear driving and driven bevel gear back lash measuring device |
-
2018
- 2018-06-07 CN CN201810579391.5A patent/CN108627074B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04240502A (en) * | 1991-01-25 | 1992-08-27 | Nissan Motor Co Ltd | Measuring device of mesh gap of differential gear |
| CN101256066A (en) * | 2008-04-16 | 2008-09-03 | 沪东重机有限公司 | Apparatus and method for measuring meshing gear interspace in closed chamber |
| CN103900812A (en) * | 2013-10-29 | 2014-07-02 | 徐州徐工随车起重机有限公司 | Device for detecting assembly of meshing gears in crane rotary table |
| CN107576250A (en) * | 2017-08-23 | 2018-01-12 | 中航飞机起落架有限责任公司 | The back lash detection means and detection method of a kind of aircraft steering gear bevel gear pair |
| CN208458631U (en) * | 2018-06-07 | 2019-02-01 | 中国第一汽车股份有限公司 | A kind of main reducing gear driving and driven bevel gear back lash measuring device |
Non-Patent Citations (1)
| Title |
|---|
| 减速器总成装配线新工艺设计;裴照明;谢锋;吴先芹;;汽车工艺与材料(第02期);全文 * |
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