CN108181318B - Processing and application method of tooth direction asymmetric modification measuring gear - Google Patents
Processing and application method of tooth direction asymmetric modification measuring gear Download PDFInfo
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- CN108181318B CN108181318B CN201711464911.XA CN201711464911A CN108181318B CN 108181318 B CN108181318 B CN 108181318B CN 201711464911 A CN201711464911 A CN 201711464911A CN 108181318 B CN108181318 B CN 108181318B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink
Abstract
The invention discloses a method for processing a tooth-direction asymmetric modification measuring gear, which comprises the following steps: 1) correspondingly designing the tooth number, the tooth width, the diameter of the addendum circle and the diameter of the dedendum circle of the measured gear according to the tooth number, the tooth width, the diameter of the addendum circle and the diameter of the dedendum circle of the measured gear and the requirements of measuring the installation center distance of the gear; 2) b and delta X are measured according to the tooth direction modification requirement of the measured gear, and a spiral angle modification angle delta beta is calculated according to the formula tan delta beta as delta X/b, wherein b is the tooth width and the unit is mm; the delta X is the size of the modification quantity, and the unit is mm; delta beta is a spiral angle modification angle, and the unit is an angle; 3) and (3) reversely grinding the gear to be measured according to the spiral angle modification angle delta beta in the step 2). The invention has the beneficial effects that: the double-meshing detection is carried out by using the modified detection gear, so that the defect of a backlash part can be detected, and the defect of full tooth width can be further detected; and unqualified gears are prevented from flowing into the assembly, and the one-time off-line qualification rate is improved.
Description
Technical Field
The invention relates to the field of gears, in particular to a processing application method of a tooth direction asymmetric modification measuring gear.
Background
With the improvement of the precision requirement of the automatic transmission gear, particularly the application of a modified gear, the meshing contact ratio of the gear is higher and higher. The existing shaping gears are developed in a diversified way, most of the existing shaping gears are asymmetric shaping, the shaping amount is large, the measuring gears for detecting the precision of the gears are in standard tooth shapes and standard tooth directions, the measuring gears are meshed with the gears for detecting the shaping of the large tooth directions, the whole tooth width direction cannot be completely contacted, and partial tooth width directions have side gaps, so that the product defects of the side gap parts exist, and the standard measuring gears cannot be detected.
Disclosure of Invention
Aiming at the technical problems that the double-meshing detection of a large-profile modification gear has a backlash and cannot detect the defect of the backlash part, a measuring gear with a tooth direction asymmetrically modified is provided to solve the technical problems.
The technical scheme is as follows:
a method for processing a tooth direction asymmetric modification measuring gear comprises the following steps:
1) correspondingly designing the tooth number, the tooth width, the diameter of the addendum circle and the diameter of the dedendum circle of the measured gear according to the tooth number, the tooth width, the diameter of the addendum circle and the diameter of the dedendum circle of the measured gear and the requirements of measuring the installation center distance of the gear;
2) b and delta X are measured according to the tooth direction modification requirement of the measured gear, and a spiral angle modification angle delta beta is calculated according to the formula tan delta beta as delta X/b, wherein b is the tooth width and the unit is mm; the delta X is the size of the modification quantity, and the unit is mm; delta beta is a spiral angle modification angle, and the unit is an angle;
3) and (3) reversely grinding the gear to be measured according to the spiral angle modification angle delta beta in the step 2).
As a further scheme of the invention: the size delta X of the modification amount is more than or equal to 0.02 mm.
As a still further scheme of the invention: the mesh point of the designed measuring gear is lower than the effective starting circle diameter of the measured gear.
An application method of a tooth direction asymmetric modification measuring gear comprises the following steps:
1) detecting the modification direction of the measuring gear, and installing the measuring gear according to the direction;
2) coloring the detection gear by red lead powder;
3) and carrying out double-meshing detection on the measuring gear and the measured gear, and observing the coloring condition of red powder on the measured gear.
Compared with the prior art, the invention has the beneficial effects that: the double-meshing detection can detect the defect of a backlash part, and further can detect the defect of full tooth width; and unqualified gears are prevented from flowing into the assembly, and the one-time off-line qualification rate is improved.
Drawings
FIG. 1 is a schematic view of a measured gear helix angle modification according to the present invention.
FIG. 2 is a modified design drawing of the measuring gear of the present invention.
FIG. 3 is a diagram illustrating the contact effect of the present invention without modification.
FIG. 4 is a diagram of the contact effect after modification according to the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a method for machining a tooth-direction asymmetric modification measuring gear includes the following steps:
1) correspondingly designing the tooth number, the tooth width, the diameter of the addendum circle and the diameter of the dedendum circle of the measured gear according to the tooth number, the tooth width, the diameter of the addendum circle and the diameter of the dedendum circle of the measured gear and the requirements of measuring the installation center distance of the gear;
2) measuring 0.06mm for delta X and 18mm for b according to the tooth direction modification requirement of the measured gear, and calculating 0.0035 degree for 0 degree 12' 8 degree for helix angle modification angle delta beta according to the formula tan delta beta/b, wherein b is the tooth width; the delta X is the magnitude of the modification amount; delta beta is a spiral angle modification angle;
3) and (3) reversely grinding the gear to be measured according to the spiral angle modification angle delta beta in the step 2).
An application method of a tooth direction asymmetric modification measuring gear comprises the following steps:
1) detecting the modification direction of the measuring gear, and installing the measuring gear according to the direction;
2) coloring the detection gear by red lead powder;
3) and carrying out double-meshing detection on the measuring gear and the measured gear, and observing the coloring condition of red powder on the measured gear.
Please refer to fig. 3-4, which are a contact effect diagram without modification and a contact effect diagram after modification, respectively, so that the modified measurement gear can better detect the defect of the backlash part, realize the defect of the full tooth width, avoid the unqualified gear from flowing into the assembly, and improve the one-time off-line qualification rate.
As an optional scheme, the size Δ X of the modification amount is greater than or equal to 0.02mm, and by performing modification design and effect verification on the measurement gears with different tooth modification sizes, it can be obtained that under the condition of small modification, the comparison effect before and after red lead powder coloring inspection verification modification is not obvious, but under the condition of large modification, the effect is obvious, the general modification size is within 0.02mm, the measurement gear does not need modification treatment, but needs modification treatment when the modification size is greater than 0.02 mm.
As an optional technical scheme, the mesh point of the designed measuring gear is lower than the effective starting circle diameter of the measured gear.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A method for machining a tooth-direction asymmetric modification measuring gear is characterized by comprising the following steps:
1) correspondingly designing the tooth number, the tooth width, the diameter of the addendum circle and the diameter of the dedendum circle of the measured gear according to the tooth number, the tooth width, the diameter of the addendum circle and the diameter of the dedendum circle of the measured gear and the requirements of measuring the installation center distance of the gear;
2) b and delta X are measured according to the tooth direction modification requirement of the measured gear, and a spiral angle modification angle delta beta is calculated according to a formula tan delta beta =deltaX/b, wherein b is the tooth width and the unit is mm; the delta X is the size of the modification quantity, and the unit is mm; delta beta is a spiral angle modification angle, and the unit is an angle;
3) and (3) reversely grinding the gear to be measured according to the spiral angle modification angle delta beta in the step 2).
2. The method for machining the tooth direction asymmetric modification measuring gear according to claim 1, wherein the modification amount Δ X is not less than 0.02 mm.
3. The method for machining the axial asymmetric modification measuring gear according to claim 1, wherein the meshing point of the designed measuring gear is lower than the effective starting circle diameter of the measured gear.
4. Application method of a measuring gear obtained by the machining method according to any one of claims 1 to 3, characterized by comprising the following steps:
1) detecting the modification direction of the measuring gear, and installing the measuring gear according to the direction;
2) coloring the gear to be tested by red lead powder;
3) and carrying out double-meshing detection on the measuring gear and the measured gear, and observing the coloring condition of red powder on the measured gear.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711464911.XA CN108181318B (en) | 2017-12-28 | 2017-12-28 | Processing and application method of tooth direction asymmetric modification measuring gear |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711464911.XA CN108181318B (en) | 2017-12-28 | 2017-12-28 | Processing and application method of tooth direction asymmetric modification measuring gear |
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| CN108181318A CN108181318A (en) | 2018-06-19 |
| CN108181318B true CN108181318B (en) | 2021-02-19 |
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| CN109570639B (en) * | 2018-12-13 | 2021-02-19 | 汉德车桥(株洲)齿轮有限公司 | Method for improving gear contact surface qualification rate |
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| CN102218572A (en) * | 2011-05-31 | 2011-10-19 | 中国航空动力机械研究所 | Shaping method and manufacturing method for involute straight tooth planetary transmission gear |
| CN103593536A (en) * | 2013-11-26 | 2014-02-19 | 武汉理工大学 | Precise design and profile modification method for asymmetric gear |
| CN104565289A (en) * | 2014-12-31 | 2015-04-29 | 南车戚墅堰机车车辆工艺研究所有限公司 | Design method of large axial modification amount gear and large axial modification amount gear |
| CN204784574U (en) * | 2015-05-27 | 2015-11-18 | 徐工集团工程机械股份有限公司 | Transaxle wheel limit planet gear gear |
| CN106695265A (en) * | 2017-01-20 | 2017-05-24 | 常州市格里森前进齿轮有限公司 | Gear modification method |
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- 2017-12-28 CN CN201711464911.XA patent/CN108181318B/en active Active
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|---|---|---|---|---|
| CN102218572A (en) * | 2011-05-31 | 2011-10-19 | 中国航空动力机械研究所 | Shaping method and manufacturing method for involute straight tooth planetary transmission gear |
| CN103593536A (en) * | 2013-11-26 | 2014-02-19 | 武汉理工大学 | Precise design and profile modification method for asymmetric gear |
| CN104565289A (en) * | 2014-12-31 | 2015-04-29 | 南车戚墅堰机车车辆工艺研究所有限公司 | Design method of large axial modification amount gear and large axial modification amount gear |
| CN204784574U (en) * | 2015-05-27 | 2015-11-18 | 徐工集团工程机械股份有限公司 | Transaxle wheel limit planet gear gear |
| CN106695265A (en) * | 2017-01-20 | 2017-05-24 | 常州市格里森前进齿轮有限公司 | Gear modification method |
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