CN108788656B - Processing method of planet carrier - Google Patents
Processing method of planet carrier Download PDFInfo
- Publication number
- CN108788656B CN108788656B CN201810877480.8A CN201810877480A CN108788656B CN 108788656 B CN108788656 B CN 108788656B CN 201810877480 A CN201810877480 A CN 201810877480A CN 108788656 B CN108788656 B CN 108788656B
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- Prior art keywords
- spline
- planet carrier
- holes
- precision
- sleeve
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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- 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to a processing method of a planet carrier. The method comprises the following steps: 1) Broaching spline holes on a vertical broaching machine after rough machining of the planet carrier; 2) Inserting the planet carrier into a high-precision taper spline mandrel, wedging the planet carrier axially by taper, and tightly propping central holes at two ends of the spline mandrel by a numerical control lathe; 3) The small end face of the planet carrier is arranged on the bottom plate, the spline holes and the small end face are used for positioning, the spline holes are used as positioning references, 3 planet gear mounting holes are processed on the vertical machining center, and the relative positions of the 3 planet gear mounting holes are ensured by equipment precision; 4) And (3) processing the 3 reserved parts by taking the spline holes and the small end faces as positioning references. The positioning device uses the spline holes for positioning, the positioning reference is unified with the design reference, the position precision is effectively ensured, the main precision is ensured by the equipment precision of the high-precision clamp and the machining center, the artificial factors are few, and the quality stability is high.
Description
Technical Field
The invention relates to a processing method of a planet carrier.
Background
The important part in the rear drive axle of the tractor, namely the planet carrier, has the functions of: the power output by the gearbox is reduced through a planetary gear arranged on a planet carrier, and then the planet carrier transmits the power to a spline shaft of a driving shaft, so that the machining precision requirement is high.
An example of an 80 horsepower tractor planet carrier is now shown in figure 1. The planet carrier is trilateral, and the center is the spline. 3 on the planet carrier
The hole is provided with a planetary gear, and the coaxiality of the axis of a circle formed by the centers of 3 holes and the center line of the spline reference circle is controlled to be +.>
And in order to ensure the accuracy of the gears after installation. Due to the splined holes and 3
The holes cannot be machined at one time, and the +.>
Coaxiality requirements are difficult.
The current processing scheme is to process 3 pieces firstly
Holes are further filled with 3 +.>
The hole positions the drawn spline. Because of too many uncontrollable factors in spline drawing, the coaxiality of the machined spline is mostly about 0.20-0.35mm, and the runout degree of the small end face and the spline is generally about 0.10mm, so that the requirement of a drawing is far less than that of the spline.
Disclosure of Invention
The invention aims to solve the problems, and provides a processing method of a planet carrier, which uses spline holes for positioning, wherein the positioning reference is unified with the design reference, so that the position precision is effectively ensured, the main precision is ensured by the equipment precision of a high-precision clamp and a processing center, the artificial factors are few, the quality stability is high, and the adopted technical scheme is as follows:
the processing method of the planet carrier is characterized by comprising the following steps of:
1) Broaching spline holes on a vertical broaching machine after rough machining of the planet carrier;
2) Inserting the planet carrier into a high-precision taper spline mandrel, wedging the planet carrier axially by taper, tightly propping central holes at two ends of the spline mandrel by a numerical control lathe, finely turning a small end face of the planet carrier, ensuring that the runout degree of the small end face and a spline is not more than 0.03mm, and simultaneously providing an accurate reference for subsequent processing; because the positioning reference and the design reference are unified (both use the spline hole as the reference), the terminal jump can be well ensured to be not more than 0.03mm;
3) The small end face of the planet carrier is arranged on the bottom plate, the spline holes and the small end face are used for positioning, the spline holes are used as positioning references, 3 planet gear mounting holes are processed on the vertical machining center, and the relative positions of the 3 planet gear mounting holes are ensured by equipment precision;
4) And (3) processing the 3 reserved parts by taking the spline holes and the small end faces as positioning references.
On the basis of the technical proposal, in order to ensure that the coaxiality of the 3 planet gear mounting holes and the spline reference circle is not more than
The novel planetary gear set is characterized in that an inner taper sleeve, a high-precision elastic opening spline sleeve and a screw are adopted, the bottom end of the screw is in threaded connection with a bottom plate, the opening spline sleeve 7 is arranged in a spline hole, the inner taper sleeve is sleeved in the opening spline sleeve, the outer diameter surface of the inner taper sleeve is of an inverted taper matched with the inner diameter surface of the opening spline sleeve, a first nut is in threaded connection with the screw and compresses the inner taper sleeve, a pressing plate penetrates the screw and is pressed on the large end surface of the planet carrier, a second nut is in threaded connection with the screw and compresses the pressing plate, and when in clamping, the inner taper sleeve pushes the opening spline sleeve to expand, so that a positioning gap is automatically eliminated, and the machining precision is improved.
Based on the technical scheme, the taper of the spline mandrel is 1:1000.
A planet carrier, characterized in that: the planet carrier is manufactured by the method for manufacturing the planet carrier.
The invention has the following advantages: the spline hole is used for positioning, the positioning reference is unified with the design reference, the position precision is effectively guaranteed, the main precision is guaranteed by the equipment precision of the high-precision clamp and the machining center, few artificial factors are needed, and the quality stability is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is apparent that the drawings in the following description are only one embodiment of the present invention, and that other embodiments of the drawings may be derived from the drawings provided without inventive effort for a person skilled in the art.
Fig. 1: the structure of the planet carrier is schematically shown;
fig. 2: the cross-section structure of the planet carrier is schematically shown;
fig. 3: the structure schematic diagram of the planet carrier inserted into the high-precision taper spline mandrel is shown in the invention;
fig. 4: the structure diagram of the planet carrier after positioning the spline holes and the small end faces is shown in the invention;
Detailed Description
The invention is further illustrated by the following figures and examples:
embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the orientations indicated by the terms "inner", "outer", etc. are defined based on the orientations shown in the drawings in the description, and are merely for purposes of describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, it should be understood that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1 to 4, a method for processing a planet carrier according to the present embodiment is characterized by comprising the following steps:
1) Broaching a spline hole 1 on a vertical broaching machine after rough machining of the planet carrier;
2) The planet carrier is inserted into a high-precision taper spline mandrel 2 and is axially wedged by taper, the center holes at two ends of the spline mandrel are tightly propped by the tip of a numerical control lathe, the small end face 3 of the planet carrier is finely turned, the runout degree of the small end face 3 and the spline is ensured not to exceed 0.03mm, and meanwhile, an accurate reference is provided for subsequent processing; because the positioning reference and the design reference are unified (both use the spline hole as the reference), the terminal jump can be well ensured to be not more than 0.03mm;
3) The small end face 3 of the planet carrier is arranged on a bottom plate 8, the small end face is positioned by a spline hole, the spline hole 1 is used as a positioning reference, 3 planet gear mounting holes 5 are processed on a vertical machining center, and the relative positions of the 3 planet gear mounting holes 5 are ensured by equipment precision;
4) And (3) processing the 3 hollow parts 4 by taking the spline holes 1 and the small end surfaces as positioning references.
Preferably, to ensure that the coaxiality of the 3 planet gear mounting holes 5 and the spline reference circle is not exceeded
The novel planetary gear set is characterized in that an inner taper sleeve 6, a high-precision elastic opening spline sleeve 7 and a screw rod 9 are adopted, the bottom end of the screw rod 9 is in threaded connection with a bottom plate 8, the opening spline sleeve 7 is arranged in a spline hole 1, the inner taper sleeve 6 is arranged in the opening spline sleeve 7, the outer diameter surface of the inner taper sleeve 6 is in an inverted taper shape matched with the inner diameter surface of the opening spline sleeve 7, a first nut 10 is in threaded connection with the screw rod 9 and tightly presses the inner taper sleeve 6, a pressing plate 11 penetrates through the screw rod 9 and is pressed on a large end surface 15 of a planet carrier, a second nut 12 is in threaded connection with the screw rod 9 and tightly presses the pressing plate 11, and when in clamping, the inner taper sleeve 6 pushes the opening spline sleeve 7 to expand, positioning gaps are automatically eliminated, and machining precision is improved. The diameter of the planetary gear mounting hole 5 may be +.>
Preferably, the taper of the spline mandrel is 1:1000.
A planet carrier, characterized in that: the planet carrier is manufactured by the method for manufacturing the planet carrier. Preferably, the planet carrier is QT600-3 material.
A machining device for a carrier, comprising: the novel planetary carrier comprises a spline mandrel 2, an inner conical sleeve 6, an elastic opening spline sleeve 7, a bottom plate 8, a screw rod 9, a first nut 10, a pressing plate 11 and a second nut 12, wherein the outer diameter surface of the inner conical sleeve 6 is of an inverted conical shape matched with the inner diameter surface of the opening spline sleeve 7, the spline mandrel 2 is provided with a taper, the bottom end of the screw rod 9 is in threaded connection with the bottom plate 8, the opening spline sleeve 7 is arranged in a spline hole 1 of the planetary carrier, the inner conical sleeve 6 is arranged in the opening spline sleeve 7, the first nut 10 is in threaded connection with the screw rod 9 and compresses the top surface of the inner conical sleeve 6, the top end of the screw rod 9 penetrates through the pressing plate 11 and is in threaded connection with the second nut 12, the second nut 12 compresses the pressing plate 11, and the pressing plate 11 compresses the large end surface 15 of the planetary carrier.
The present invention has been described above by way of example, but the present invention is not limited to the above-described embodiments, and any modifications or variations based on the present invention fall within the scope of the present invention.
Claims (4)
1. The processing method of the planet carrier is characterized by comprising the following steps of:
1) Broaching spline holes on a vertical broaching machine after rough machining of the planet carrier;
2) Inserting the planet carrier into a high-precision taper spline mandrel, wedging the planet carrier axially by taper, tightly propping central holes at two ends of the spline mandrel by a numerical control lathe, finely turning a small end face of the planet carrier, ensuring that the runout degree of the small end face and a spline is not more than 0.03mm, and simultaneously providing an accurate reference for subsequent processing;
3) The small end face of the planet carrier is arranged on the bottom plate, the spline holes and the small end face are used for positioning, the spline holes are used as positioning references, 3 planet gear mounting holes are processed on the vertical machining center, and the relative positions of the 3 planet gear mounting holes are ensured by equipment precision;
4) And (3) processing the 3 reserved parts by taking the spline holes and the small end faces as positioning references.
2. A method of manufacturing a planet carrier according to claim 1, wherein: in order to ensure that the coaxiality of the 3 planetary gear mounting holes and the spline reference circle is not more than phi 0.05mm, an inner taper sleeve, a high-precision elastic opening spline sleeve and a screw rod are adopted, the bottom end of the screw rod is in threaded connection with a bottom plate, an opening spline sleeve is sleeved in the spline hole, an inner taper sleeve is sleeved in the opening spline sleeve, the outer diameter surface of the inner taper sleeve is of an inverted taper matched with the inner diameter surface of the opening spline sleeve, a first nut is in threaded connection with the screw rod and presses the inner taper sleeve tightly, a pressing plate penetrates through the screw rod and presses the large end surface of the planet carrier, a second nut is in threaded connection with the screw rod and presses the pressing plate tightly, and when in clamping, the inner taper sleeve pushes the opening spline sleeve to expand, positioning gaps are automatically eliminated, and machining precision is improved.
3. A method of manufacturing a planet carrier according to claim 1 or 2, characterized in that: the taper of the spline mandrel is 1:1000.
4. A planet carrier, characterized in that: which is manufactured by a method for manufacturing a planet carrier according to claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810877480.8A CN108788656B (en) | 2018-08-03 | 2018-08-03 | Processing method of planet carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810877480.8A CN108788656B (en) | 2018-08-03 | 2018-08-03 | Processing method of planet carrier |
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| Publication Number | Publication Date |
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| CN108788656A CN108788656A (en) | 2018-11-13 |
| CN108788656B true CN108788656B (en) | 2023-06-23 |
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| CN201810877480.8A Active CN108788656B (en) | 2018-08-03 | 2018-08-03 | Processing method of planet carrier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110434547A (en) * | 2019-08-12 | 2019-11-12 | 哈尔滨电机厂有限责任公司 | A kind of coaxial pin hole interference localization method of hydraulic turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101201912B1 (en) * | 2008-03-31 | 2012-11-15 | 히라따기꼬오 가부시키가이샤 | Pin positioning jig and pin mounting apparatus |
| CN102179669A (en) * | 2011-03-29 | 2011-09-14 | 天津天重车轴制造有限公司 | Process for forging planet carrier |
| CN102878277B (en) * | 2012-10-26 | 2015-04-22 | 盛瑞传动股份有限公司 | Processing technology of planet carrier welding assembly |
| CN203265804U (en) * | 2013-05-03 | 2013-11-06 | 重庆聚嘉机械有限公司 | Internal spline gear grinding clamping tool |
| CN105328422A (en) * | 2015-11-26 | 2016-02-17 | 宁波中大力德智能传动股份有限公司 | Planetary gear carrier drilling process of planetary gear speed reducer |
| CN108067692A (en) * | 2017-12-18 | 2018-05-25 | 中国航发贵州黎阳航空动力有限公司 | A kind of involute inner spline centering tensioning clamper |
| CN208913487U (en) * | 2018-08-03 | 2019-05-31 | 青岛华瑞汽车零部件股份有限公司 | A kind of processing unit (plant) of planet carrier |
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