CN109551190A - A kind of processing technology of stepped ramp type gear ring - Google Patents
A kind of processing technology of stepped ramp type gear ring Download PDFInfo
- Publication number
- CN109551190A CN109551190A CN201811508876.1A CN201811508876A CN109551190A CN 109551190 A CN109551190 A CN 109551190A CN 201811508876 A CN201811508876 A CN 201811508876A CN 109551190 A CN109551190 A CN 109551190A
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- China
- Prior art keywords
- gear ring
- workpiece
- processing
- ramp type
- type gear
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
Abstract
The invention discloses a kind of processing technologys of stepped ramp type gear ring；Selection, selecting hollow thick steel pipe is processing raw material；Step 2: blocking forges into a hollow cylinder, reserved margin by the hollow thick steel pipe chosen according to drawing size；Step 3: it is rough turn, outer circle and inner hole are subjected to shaping by stock removal；Step 4: step forges, is ground using stepped ramp type gear ring and expand wheel to the outer circle progress outer profile step forging processing in step 2；Step 5: rubbing down processing is carried out to the outer circle of workpiece obtained in step 4, end face and inner hole, chamfer machining is carried out by cutting element to step；Step 6, heat treatment；Step 7 cools down in air；Step 8, carburizing；Step 9, pressure are quenched；Step 10, impeller blasting processing；Step 11, nitrogen treatment；Gear ring outer step forging molding completely, unfolded phenomenon save gear ring product material rapidoprint, it is ensured that the reasonable transition of forging flow lines prevents crackle generation, saves material cost, and manufacturing procedure is greatly reduced.
Description
Technical field
The present invention relates to ring gear machining field, the processing technology of specifically a kind of stepped ramp type gear ring.
Background technique
Gear ring is one of the important spare part in automobile variable speed mechanism, its processing quality, structure, service life etc. are direct
Influence the normally travel of automobile and the personal safety of driver and passenger.It is well known that gear, including the internal gear with ring gear and
Various external gears are widely used in various machine drivings, however different industry requirements and purposes leads to the structure of gear
It is different.
Gear ring technique used in automobile assembly is mostly forging molding, and major design mode is to be forged into no step tooth at present
Circle, then Vehicle Processing goes out step, this process flow will be by a large amount of Vehicle Processing process, and metal turning amount is big, leads to material
Waste is serious, however has started to carry out the research of stepped ramp type gear ring forging technology both at home and abroad at present, rolls over because step reaming exists
The high problem of folded to be inclined to and cracked risk.
Summary of the invention
Goal of the invention: for above-mentioned existing problem and shortage in the prior art, the object of the present invention is to provide one kind
The processing technology of stepped ramp type gear ring.
Technical solution: in order to achieve the above objectives, a kind of processing technology of stepped ramp type gear ring of the present invention；
Including Step 1: selection, selecting hollow thick steel pipe is processing raw material；
Step 2: blocking forges into a hollow cylinder, reserved margin by the hollow thick steel pipe chosen according to drawing size；
Step 3: it is rough turn, surplus is removed, outer circle and inner hole are subjected to shaping by stock removal, end face and interior hole end surface carry out essence to foreign round
Fining-off；
Step 4: step forges, the workpiece of the processing in step 2 is ground using stepped ramp type gear ring and expands wheel to outer in step 2
Circle carries out the forging of outer profile step and processes, and the step surface of corresponding size is formed according to drawing, avoids the occurrence of step and grinds and expands tearing now
As；
Step 5: rubbing down processing is carried out to the outer circle of workpiece obtained in step 4, end face and inner hole, removes surface spikes and miscellaneous
Matter particle carries out chamfer machining by cutting element to step, removes flash removed；
Step 6, heat treatment, will be rough turn after workpiece be put into heating furnace and be quenched, eliminate bad group that forging generates
It knits, so that even tissue；
Workpiece after quenching treatment is taken out from heating furnace, is cooled down in air by step 7, to obtain higher hardness；
Step 8, carburizing pass through multipurpose furnace carburizing, it is ensured that carburized layer is in 0.6-1.0mm；
Step 9, pressure are quenched, and workpiece is heated, then are moved to pressure on press and are quenched；
Step 10, impeller blasting processing, the workpiece that pressure has been quenched carry out ball blast, and clean surface obtains finished product；
Workpiece is heated in the saturation atmosphere full of nitrogen, methane 500-800 DEG C, keeps the temperature 2- by step 11, nitrogen treatment
3 hours, then use water-cooled process.
Further, the temperature of the quenching is 800 DEG C -860 DEG C.
Further, the method that impeller blasting is handled in the step 10 are as follows: the end face and tooth root of workpiece are thrown
Ball processing, then will take out after the workpiece immersion in liquid preventives water 2-3min after ball blast.
Further, the Carburization Treatment method in the step 8 are as follows: in 800 DEG C of temperature, in the environment of inert gas
In pour carburizer, workpiece is placed in inert gas holding certain time
Further, the carburizer group is divided into methanol.
Further, workpiece being added in heating furnace in the step 6 is heated to Ac3 or Ac1 or more 30-50 DEG C.
Further, pro-eutectoid ferrite all incorporates the finishing temperature of austenite when the Ac3 refers to heating, and Ac1 is
The temperature that pearlite starts to austenite transformation when referring to heating.
Further, the type of cooling is that mist is cold in air in step 7.
Above-mentioned technical proposal can be seen that the invention has the benefit that
(1) processing technology of a kind of stepped ramp type gear ring of the present invention, gear ring outer step form rolling wheel design so that product at
The consistency of type process, gear ring outer step forging molding completely, unfolded phenomenon save gear ring product material rapidoprint, really
The reasonable transition of forging flow lines is protected, prevents crackle generation, saves material cost, and Vehicle Processing process is greatly reduced, reduce knife
Have cost and cost of labor.
(2) processing technology of a kind of stepped ramp type gear ring of the present invention uses hollow thick steel pipe for raw material, can not only
Raw material are saved, and reduce punching processing process, simplify ring gear machining technique, improve processing efficiency.
Specific embodiment
Combined with specific embodiments below, the present invention is furture elucidated.
A kind of processing technology of stepped ramp type gear ring；Including Step 1: selection, selecting hollow thick steel pipe is processing raw material；
Step 2: blocking forges into a hollow cylinder, reserved margin by the hollow thick steel pipe chosen according to drawing size；
Step 3: rough turn, remove a large amount of surpluses, outer circle and inner hole be subjected to shaping by stock removal, to foreign round end face and interior hole end surface into
Row retrofit；
Step 4: step forges, the workpiece of the processing in step 2 is ground using stepped ramp type gear ring and expands wheel to outer in step 2
Circle carries out the forging of outer profile step and processes, and the step surface of corresponding size is formed according to drawing, avoids the occurrence of step and grinds and expands tearing now
As；
Step 5: rubbing down processing is carried out to the outer circle of workpiece obtained in step 4, end face and inner hole, removes surface spikes and miscellaneous
Matter particle carries out chamfer machining by cutting element to step, removes flash removed；
Step 6, heat treatment, will be rough turn after workpiece be put into heating furnace and be quenched, eliminate bad group that forging generates
It knits, so that even tissue；
Workpiece after quenching treatment is taken out from heating furnace, is cooled down in air by step 7, to obtain higher hardness；
Step 8, carburizing pass through multipurpose furnace carburizing, it is ensured that carburized layer is in 0.6-1.0mm；
Step 9, pressure are quenched, and workpiece is heated, then are moved to pressure on press and are quenched；
Step 10, impeller blasting processing, the workpiece that pressure has been quenched carry out ball blast, and clean surface obtains finished product；
Workpiece is heated in the saturation atmosphere full of nitrogen, methane 500-800 DEG C, keeps the temperature 2- by step 11, nitrogen treatment
3 hours, then use water-cooled process.
The temperature of quenching described in the present embodiment is 800 DEG C -860 DEG C.
The method that impeller blasting is handled in step 10 described in the present embodiment are as follows: the end face and tooth root of workpiece are thrown
Ball processing, then will take out after the workpiece immersion in liquid preventives water 2-3min after ball blast.
Carburization Treatment method in step 8 described in the present embodiment are as follows: in 800 DEG C of temperature, in the ring of inert gas
Carburizer is poured in border, and workpiece is placed on holding certain time in inert gas
Carburizer group described in the present embodiment is divided into methanol.
Workpiece being added in heating furnace in step 6 described in the present embodiment is heated to Ac3 or Ac1 or more 30-50
℃。
Pro-eutectoid ferrite all incorporates the finishing temperature of austenite when Ac3 described in the present embodiment refers to heating, and Ac1 is
The temperature that pearlite starts to austenite transformation when referring to heating.
The type of cooling is that mist is cold in air in step 7 in the present embodiment.
Examples are only for illustrating the present invention and not for limiting the scope of the present invention, after the present invention has been read, this
Field technical staff falls within the application range as defined in the appended claims to various equivalences of the invention.
Claims (8)
1. a kind of processing technology of stepped ramp type gear ring；It is characterized by:
Step 1: selection, selecting hollow thick steel pipe is processing raw material；
Step 2: blocking forges into a hollow cylinder, reserved margin by the hollow thick steel pipe chosen according to drawing size；
Step 3: rough turn, remove a large amount of surpluses, outer circle and inner hole be subjected to shaping by stock removal, to foreign round end face and interior hole end surface into
Row retrofit；
Step 4: step forges, the workpiece of the processing in step 2 is ground using stepped ramp type gear ring and expands wheel to outer in step 2
Circle carries out the forging of outer profile step and processes, and the step surface of corresponding size is formed according to drawing, avoids the occurrence of step and grinds and expands tearing now
As；
Step 5: rubbing down processing is carried out to the outer circle of workpiece obtained in step 4, end face and inner hole, removes surface spikes and miscellaneous
Matter particle carries out chamfer machining by cutting element to step, removes flash removed；
Step 6, heat treatment, will be rough turn after workpiece be put into heating furnace and be quenched, eliminate bad group that forging generates
It knits, so that even tissue；
Workpiece after quenching treatment is taken out from heating furnace, is cooled down in air by step 7, to obtain higher hardness；
Step 8, carburizing pass through multipurpose furnace carburizing, it is ensured that carburized layer is in 0.6-1.0mm；
Step 9, pressure are quenched, and workpiece is heated, then are moved to pressure on press and are quenched；
Step 10, impeller blasting processing, the workpiece that pressure has been quenched carry out ball blast, and clean surface obtains finished product；
Workpiece is heated in the saturation atmosphere full of nitrogen, methane 500-800 DEG C, keeps the temperature 2- by step 11, nitrogen treatment
3 hours, then use water-cooled process.
2. a kind of processing technology of stepped ramp type gear ring according to claim 1, it is characterised in that: the temperature of the quenching is
800℃-860℃。
3. a kind of processing technology of stepped ramp type gear ring according to claim 1, it is characterised in that: ball blast in the step 10
The method of processing of rust removing are as follows: end face and tooth root to workpiece carry out Shot Blasting, then by the workpiece immersion in liquid preventives after ball blast
It is taken out after water 2-3min.
4. a kind of processing technology of stepped ramp type gear ring according to claim 1, it is characterised in that: the infiltration in the step 8
Carbon processing method are as follows: in 800 DEG C of temperature, pour carburizer in the environment of inert gas, workpiece is placed on inert gas
Middle holding certain time.
5. a kind of processing technology of stepped ramp type gear ring according to claim 4, it is characterised in that: the carburizer group is divided into
Methanol.
6. a kind of processing technology of stepped ramp type gear ring according to claim 1, it is characterised in that: the general in the step 6
Workpiece is added in heating furnace and is heated to Ac3 or Ac1 or more 30-50 DEG C.
7. a kind of processing technology of stepped ramp type gear ring according to claim 5, feature exist
In: pro-eutectoid ferrite all incorporates the finishing temperature of austenite, pearl when Ac1 refers to heating when the Ac3 refers to heating
The temperature that body of light starts to austenite transformation.
8. a kind of processing technology of stepped ramp type gear ring according to claim 1, it is characterised in that: in step 7 in air
The type of cooling is that mist is cold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811508876.1A CN109551190A (en) | 2018-12-11 | 2018-12-11 | A kind of processing technology of stepped ramp type gear ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811508876.1A CN109551190A (en) | 2018-12-11 | 2018-12-11 | A kind of processing technology of stepped ramp type gear ring |
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| CN109551190A true CN109551190A (en) | 2019-04-02 |
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| CN201811508876.1A Pending CN109551190A (en) | 2018-12-11 | 2018-12-11 | A kind of processing technology of stepped ramp type gear ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515638A (en) * | 2020-04-17 | 2020-08-11 | 东风商用车有限公司 | Cold extrusion processing method for inner gear ring of heavy-duty automobile gearbox |
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| CN2511414Y (en) * | 2001-11-01 | 2002-09-18 | 济宁振华锻件厂 | Forged blank for support wheel of bulldozer |
| EP0766023B1 (en) * | 1995-09-25 | 2003-05-21 | Teijin Seiki Boston, Inc. | Harmonic drive transmissions and components therefor, and their method of manufacture |
| CN101844306A (en) * | 2010-06-17 | 2010-09-29 | 株洲齿轮有限责任公司 | Processing method of annular gear of thin-wall member |
| CN102101171A (en) * | 2009-12-02 | 2011-06-22 | 通用汽车环球科技运作有限责任公司 | Bevel and hypoid gear and method of manufacture |
| CN103464991A (en) * | 2013-09-18 | 2013-12-25 | 江国辉 | Gear ring machining process |
| CN105002507A (en) * | 2015-02-06 | 2015-10-28 | 襄阳长源东谷实业股份有限公司 | 17CrNiMo6 material gear machining process |
| CN106624670A (en) * | 2016-12-09 | 2017-05-10 | 屈兆辉 | Machining process for automobile transmission gear |
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2018
- 2018-12-11 CN CN201811508876.1A patent/CN109551190A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0766023B1 (en) * | 1995-09-25 | 2003-05-21 | Teijin Seiki Boston, Inc. | Harmonic drive transmissions and components therefor, and their method of manufacture |
| CN2511414Y (en) * | 2001-11-01 | 2002-09-18 | 济宁振华锻件厂 | Forged blank for support wheel of bulldozer |
| CN102101171A (en) * | 2009-12-02 | 2011-06-22 | 通用汽车环球科技运作有限责任公司 | Bevel and hypoid gear and method of manufacture |
| CN101844306A (en) * | 2010-06-17 | 2010-09-29 | 株洲齿轮有限责任公司 | Processing method of annular gear of thin-wall member |
| CN103464991A (en) * | 2013-09-18 | 2013-12-25 | 江国辉 | Gear ring machining process |
| CN105002507A (en) * | 2015-02-06 | 2015-10-28 | 襄阳长源东谷实业股份有限公司 | 17CrNiMo6 material gear machining process |
| CN106624670A (en) * | 2016-12-09 | 2017-05-10 | 屈兆辉 | Machining process for automobile transmission gear |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515638A (en) * | 2020-04-17 | 2020-08-11 | 东风商用车有限公司 | Cold extrusion processing method for inner gear ring of heavy-duty automobile gearbox |
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Application publication date: 20190402 |
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