CN111822959A - Production and processing technology of driven gear ring - Google Patents
Production and processing technology of driven gear ring Download PDFInfo
- Publication number
- CN111822959A CN111822959A CN202010474306.6A CN202010474306A CN111822959A CN 111822959 A CN111822959 A CN 111822959A CN 202010474306 A CN202010474306 A CN 202010474306A CN 111822959 A CN111822959 A CN 111822959A
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- Prior art keywords
- gear ring
- driven gear
- finish turning
- drilling
- tapping
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 37
- 238000007514 turning Methods 0.000 claims abstract description 32
- 238000005553 drilling Methods 0.000 claims abstract description 29
- 238000010079 rubber tapping Methods 0.000 claims abstract description 29
- 230000008569 process Effects 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000005242 forging Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000003754 machining Methods 0.000 claims description 12
- 238000001931 thermography Methods 0.000 claims description 9
- 238000005255 carburizing Methods 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 2
- 101100408453 Arabidopsis thaliana PLC5 gene Proteins 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
Images
Classifications
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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
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
- Forging (AREA)
Abstract
The invention discloses a production and processing technology of a driven gear ring, which comprises the following processing steps in sequence: forging blank-normalizing-blank checking-rough turning-semi-finish turning-hobbing-heat treatment-first finish turning-drilling-tapping-second finish turning-gear grinding, wherein part wall buttons are reserved in the first finish turning process; the second finish turning process adopts a CNC vertical lathe KV-1600ATC + C. According to the invention, the first finish turning is carried out after heating, the wall of the part is not turned out, and the stress deformation caused by subsequent drilling and tapping is greatly reduced; and (3) second finish turning: the CNC vertical lathe KV-1600ATC + C is used, and the lathe is turned and ground into a whole, so that twice clamping is greatly reduced, and the precision grade and the form and position tolerance required by a drawing are guaranteed. Thus, the precision is ensured, and the deformation and the repair are reduced.
Description
Technical Field
The invention relates to a production and processing technology of a driven gear ring.
Background
The driven gear is a high-speed gear used on a traffic track. Therefore, the precision requirement is high, and the gear meshing backlash is controlled to be 0.251-0.563 mm (within 0.312 mm). The current general process route is as follows: blanking, rough turning, UT flaw detection, normalizing, semi-finish turning, gear hobbing, carburizing and quenching, finish turning, drilling and tapping, finish turning 2, finish grinding, gear grinding, magnetic particle inspection and final inspection; however, the processing period is long, the efficiency is low, the cost is high, and the requirements of customers cannot be met. Because the wall of the driven gear is thin, the radial rigidity is very weak, and the driven gear is very easy to deform in processing. The main technical requirements are the sizes of an inner hole and an outer circle, an inner hole step arc wall buckle and a circle of pin holes. The cylindricity requirement of the inner bore diameter is high, and the position requirement of the pin hole is relatively high. The machining process is easily deformed under the influence of factors such as clamping force, sequential machining procedures and the like, so that the technical requirements are difficult to guarantee. The gear ring generally has the following processing procedures: forging blank-normalizing-blank checking-rough turning-semi-finish turning-hobbing-heat treatment (carburizing and quenching) -finish turning-drilling-fine grinding-gear grinding-final checking. After finish turning, drilling and tapping are easy to generate stress to deform parts, so that the subsequent gear grinding precision cannot be guaranteed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a production and processing process of a driven gear ring, which can greatly reduce stress deformation caused by subsequent drilling and tapping; two times of clamping are greatly reduced, and the precision grade and the form and position tolerance required by a drawing are ensured. Not only ensures the precision, but also reduces the deformation and the repair.
In order to achieve the purpose, the technical scheme of the invention is to design a production and processing technology of a driven gear ring, which comprises the following steps in sequence: forging blank-normalizing-blank checking-rough turning-semi-finish turning-hobbing-heat treatment-first finish turning-drilling-tapping-second finish turning-gear grinding, wherein part wall buttons are reserved in the first finish turning process; the second finish turning process adopts a CNC vertical lathe KV-1600ATC + C. The hot first finish turning does not buckle the wall of the part and reduce the stress deformation caused by the subsequent drilling and tapping greatly; and (3) second finish turning: the CNC vertical lathe KV-1600ATC + C is used, and the lathe is turned and ground into a whole, so that twice clamping is greatly reduced, and the precision grade and the form and position tolerance required by a drawing are guaranteed. Thus, the precision is ensured, and the deformation and the repair are reduced. The wall button is in the shape of an annular groove.
The further technical scheme is that the heat treatment process is carburizing and quenching, and the driven gear ring is made of 17CrNiMo 6. Thus, the standard of railway traffic can be met.
The further technical scheme is that in the drilling and tapping process, a mode of simultaneously drilling and tapping even holes is adopted, and each pair of drill bits symmetrically arranged in each drilling and tapping process are located on the same diameter of the driven gear ring. This can reduce deformation during machining, and symmetric machining can minimize stress deformation during machining.
The further technical scheme is that after the drilling and tapping are carried out for N times, a secondary finish turning procedure and a drilling and tapping procedure are carried out simultaneously, and the wall fastener is machined through the secondary finish turning procedure; the hole drilled and tapped for N times and the wall buckles arranged on the gear ring in pairs are arranged in a cross shape. That is, the drilled holes and wall buttons are arranged in an annular array on the ring gear so that the symmetrical arrangement minimizes stress distortion during machining. And the wall fastener is turned out after the holes are drilled out, so that part of processing stress can be released, and deformation is reduced.
The further technical proposal is that N is more than or equal to 2.
The further technical scheme is that when the secondary finish turning process and the drilling and tapping process are carried out simultaneously, thermal imaging equipment is further arranged on one side of the driven gear ring and is electrically connected with the PLC, and the PLC is electrically connected with the opening and closing valve on the cooling pipe. Whether the workpiece generates heat in the machining process can be definitely known according to the thermal imaging equipment, so that the PLC can open and close the cooling pipe to cool the workpiece to be machined, and the deformation can be reduced.
The further technical scheme is that the two cooling pipes are arranged and are annular, and the two annular cooling pipes are respectively abutted against the inner wall and the outer wall of the driven gear ring. Because the two times of finish turning and drilling and tapping after the heat treatment are processed on the plane end surface of the driven gear ring, the cooling pipe is abutted against the inner wall and the outer wall of the driven gear ring, the drilling and tapping and the turning are not interfered, and the gear ring can be cooled to avoid deformation.
The other technical scheme is that a plurality of cooling pipes are arranged, each cooling pipe is provided with a water inlet and a water outlet, and each cooling pipe is arranged in parallel to the axial direction of the driven gear ring and is abutted against the inner wall and the outer wall of the driven gear ring; a water inlet pipe is connected to its water inlet of every cooling tube, sets up the on-off valve on every inlet tube, and the on-off valve is connected with the PLC electricity. Can definitely learn the place that generates heat higher temperature in the course of working according to thermal imaging equipment after setting up like this, PLC can open and close the on-off valve on the different cooling tubes according to the temperature condition of treating the different positions of machined part like this and give the regional cooling of higher temperature during processing, can make the cooling more pointed, the effect of reducing the deformation is showing extremely.
The invention has the advantages and beneficial effects that: the hot first finish turning does not buckle the wall of the part and reduce the stress deformation caused by the subsequent drilling and tapping greatly; and (3) second finish turning: the CNC vertical lathe KV-1600ATC + C is used, and the lathe is turned and ground into a whole, so that twice clamping is greatly reduced, and the precision grade and the form and position tolerance required by a drawing are guaranteed. Thus, the precision is ensured, and the deformation and the repair are reduced. The deformation during machining can be reduced, and the stress deformation during machining can be minimized by symmetrical machining. The drilled holes and wall buttons are arranged in an annular array on the gear ring, so that the symmetrical arrangement can minimize stress deformation in machining. And the wall fastener is turned out after the holes are drilled out, so that part of processing stress can be released, and deformation is reduced. Can definitely learn the place that generates heat higher temperature in the course of working according to thermal imaging equipment, PLC can open and close the cooling tube according to the temperature condition of treating the different positions of machined part like this and give the regional cooling of adding man-hour higher temperature, can reduce the deformation. Because the two times of finish turning and drilling and tapping after the heat treatment are processed on the plane end surface of the driven gear ring, the cooling pipe is abutted against the inner wall and the outer wall of the driven gear ring, the drilling and tapping and the turning are not interfered, and the gear ring can be cooled to avoid deformation. Can be according to the thermal imaging equipment can definitely learn the place that generates heat higher temperature in the course of working, PLC can open and close the on-off valve on the different cooling tubes according to the temperature condition of treating the different positions of machined part like this and give the regional cooling of higher temperature during processing, can make the cooling more pointed, reduce the effect of warping and show extremely.
Drawings
FIG. 1 is a schematic view of a driven gear ring after the production and processing process of the driven gear ring is completed;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the present invention during a drilling and tapping operation;
FIG. 4 is a schematic diagram of the principles of the present invention;
FIG. 5 is a plan view of the driven ring gear as machined by the present invention;
fig. 6 is a perspective view showing only one cooling pipe in fig. 5.
In the figure: 1. wall fastening; 2. a drill bit; 3. an aperture; 4. a thermal imaging device; 5. a PLC; 6. a cooling tube; 7. opening and closing a valve; 8. a water outlet; 9. and (4) a water inlet pipe.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 6, the invention relates to a process for producing and processing a driven gear ring, which comprises the following process steps in sequence: forging blank-normalizing-blank checking-rough turning-semi-finish turning-hobbing-heat treatment-first finish turning-drilling-tapping-second finish turning-gear grinding, wherein a part wall buckle 1 is reserved in the first finish turning procedure; the second finish turning process adopts a CNC vertical lathe KV-1600ATC + C. The heat treatment process is carburizing and quenching, and the driven gear ring is made of 17CrNiMo 6. In the drilling and tapping process, a mode of simultaneously drilling and tapping even holes 3 is adopted, and each pair of drill bits 2 which are symmetrically arranged are located on the same diameter of the driven gear ring during each drilling and tapping. After the drilling and tapping are carried out for N times, a secondary finish turning procedure and the drilling and tapping procedure are carried out simultaneously, and the wall fastener 1 is machined through the secondary finish turning procedure; the hole 3 drilled and tapped for N times and the wall buckles 1 arranged on the gear ring in pairs are arranged in a cross shape. N is more than or equal to 2. When the secondary finish turning process and the drilling and tapping process are simultaneously carried out, a thermal imaging device 4 is further arranged on one side of the driven gear ring, the thermal imaging device 4 is electrically connected with a PLC5, and a PLC5 is electrically connected with an opening and closing valve 7 on the cooling pipe 6. A plurality of cooling pipes 6 are arranged, each cooling pipe 6 is provided with a water inlet and a water outlet 8, and each cooling pipe 6 is arranged in parallel to the axial direction of the driven gear ring and is abutted against the inner wall and the outer wall of the driven gear ring; a water inlet pipe 9 is connected to its water inlet of every cooling tube 6, sets up on every inlet tube 9 on the valve 7 that opens and shuts, and valve 7 and PLC5 are connected electrically.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The production and processing technology of the driven gear ring is characterized by comprising the following steps in sequence: forging blank-normalizing-blank checking-rough turning-semi-finish turning-hobbing-heat treatment-first finish turning-drilling-tapping-second finish turning-gear grinding, wherein part wall buttons are reserved in the first finish turning process; the second finish turning process adopts a CNC vertical lathe KV-1600ATC + C.
2. The process for producing and machining the driven gear ring according to claim 1, wherein the heat treatment step is carburizing and quenching, and the driven gear ring is made of 17CrNiMo6。
3. The production and processing technology of the driven gear ring according to claim 2, wherein in the drilling and tapping process, a mode of simultaneously drilling and tapping an even number of holes at one time is adopted, and each pair of symmetrically arranged drill bits are located on the same diameter of the driven gear ring in each drilling and tapping process.
4. The production and processing technology of the driven gear ring according to claim 3, wherein after N times of drilling and tapping, a second finish turning process is performed simultaneously with the drilling and tapping process, and the wall button is machined through the second finish turning process; the hole drilled and tapped for N times and the wall buckles arranged on the gear ring in pairs are arranged in a cross shape.
5. The driven gear ring production and processing technology as claimed in claim 4, wherein N is more than or equal to 2.
6. The driven gear ring production and processing technology is characterized in that when the secondary finish turning process and the drilling and tapping process are carried out simultaneously, a thermal imaging device is further arranged on one side of the driven gear ring and is electrically connected with a PLC (programmable logic controller), and the PLC is electrically connected with an opening and closing valve on a cooling pipe.
7. The production and processing technology for the driven gear ring according to claim 6, wherein the two cooling pipes are annular, and the two annular cooling pipes respectively abut against the inner wall and the outer wall of the driven gear ring.
8. The production and processing technology of the driven gear ring according to claim 6, wherein a plurality of cooling pipes are arranged, each cooling pipe is provided with a water inlet and a water outlet, and each cooling pipe is arranged in parallel to the axial direction of the driven gear ring and abuts against the inner wall and the outer wall of the driven gear ring; a water inlet pipe is connected to its water inlet of every cooling tube, sets up the on-off valve on every inlet tube, and the on-off valve is connected with the PLC electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474306.6A CN111822959B (en) | 2020-05-29 | 2020-05-29 | Production and processing technology of driven gear ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474306.6A CN111822959B (en) | 2020-05-29 | 2020-05-29 | Production and processing technology of driven gear ring |
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| Publication Number | Publication Date |
|---|---|
| CN111822959A true CN111822959A (en) | 2020-10-27 |
| CN111822959B CN111822959B (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010474306.6A Active CN111822959B (en) | 2020-05-29 | 2020-05-29 | Production and processing technology of driven gear ring |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856167A (en) * | 1987-02-12 | 1989-08-15 | Eaton Corporation | Method for producing near net ring gear forgings |
| CN105563022A (en) * | 2015-11-27 | 2016-05-11 | 陕西易阳科技有限公司 | Machining method for gear ring of reducer |
| CN107199445A (en) * | 2016-03-18 | 2017-09-26 | 徐州万达回转支承有限公司 | A kind of processing technology of ultra-thin gear ring |
| CN107234407A (en) * | 2017-08-07 | 2017-10-10 | 江阴市凯华机械制造有限公司 | Driven tooth wheel rim production technology |
| US20190126362A1 (en) * | 2017-10-31 | 2019-05-02 | Citic Dicastal Co., Ltd | Method for machining flange face of aluminum alloy hub |
-
2020
- 2020-05-29 CN CN202010474306.6A patent/CN111822959B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856167A (en) * | 1987-02-12 | 1989-08-15 | Eaton Corporation | Method for producing near net ring gear forgings |
| CN105563022A (en) * | 2015-11-27 | 2016-05-11 | 陕西易阳科技有限公司 | Machining method for gear ring of reducer |
| CN107199445A (en) * | 2016-03-18 | 2017-09-26 | 徐州万达回转支承有限公司 | A kind of processing technology of ultra-thin gear ring |
| CN107234407A (en) * | 2017-08-07 | 2017-10-10 | 江阴市凯华机械制造有限公司 | Driven tooth wheel rim production technology |
| US20190126362A1 (en) * | 2017-10-31 | 2019-05-02 | Citic Dicastal Co., Ltd | Method for machining flange face of aluminum alloy hub |
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| Publication number | Publication date |
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| CN111822959B (en) | 2022-02-25 |
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Denomination of invention: Production and processing technology of driven gear ring Effective date of registration: 20231127 Granted publication date: 20220225 Pledgee: Zhejiang Commercial Bank Co.,Ltd. Jiangyin Branch Pledgor: JIANGYIN KAIHUA MACHINERY MANUFACTURING Co.,Ltd. Registration number: Y2023980067806 |
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