CN108480937A - A kind of contour machining method of ring gear - Google Patents
A kind of contour machining method of ring gear Download PDFInfo
- Publication number
- CN108480937A CN108480937A CN201810283242.4A CN201810283242A CN108480937A CN 108480937 A CN108480937 A CN 108480937A CN 201810283242 A CN201810283242 A CN 201810283242A CN 108480937 A CN108480937 A CN 108480937A
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- China
- Prior art keywords
- ring
- ring gear
- profiling
- forging
- gear
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
- Forging (AREA)
Abstract
The present invention provides a kind of contour machining method of ring gear, including cast tube, forging and stamping, trimming and heat treatment and etc., the present invention directly uses steel ingot, alloy pig or steel scrap to be used as raw material, again through cast tube and forging acquisition ring gear, it is simple for process, and stock utilization is relatively high.Simultaneously, cast tube is carried out as a result of centrifugal tube casting machine, the density of material of profiling ring outer peripheral edge is much larger than the density of material at its inner peripheral position, so that the mechanical performances such as wearability, hardness and strength of outer peripheral edge of ring gear for obtaining are much larger than and inner peripheral position, the mechanical performance of each tooth in outer peripheral edge are relatively preferable.Cast tube is carried out as a result of centrifugal tube casting machine, the density of material of profiling ring outer peripheral edge is much larger than the density of material at its inner peripheral position, and the penetration depth of heat treatment is relatively large, and seepage velocity is also relatively fast, effectively increases the quality and efficiency of heat treatment.
Description
Technical field
The present invention relates to a kind of production method of metal parts, especially a kind of contour machining method of ring gear.
Background technology
Ring gear is the types such as a kind of outer peripheral edge even part for being furnished with dentation block, including gear, sprocket wheel and gear ring, extensive use
In all kinds of mechanical equipments.Currently, ring gear, usually using bar as raw material, production technology is usually blanking-punching-expansion
Need first melting to obtain bar before hole-rolling ring-forging and stamping-heat treatment, and its production, technique is cumbersome and stock utilization relatively
It is low.
In addition, ring gear is as driving parts, to mechanicalnesses such as wearability, the hardness and strength of each tooth positioned at its outer peripheral edge
It can require much larger than other positions, and the ring gear that production technology obtains at present, wearability, the hardness and strength at each position etc.
Mechanical performance is not much different.
In view of this, the applicant conducts in-depth research the processing method of ring gear, there is this case generation then.
Invention content
That the purpose of the present invention is to provide a kind of material technologies is simple, utilization rate is relatively high and the machinery of each tooth in outer peripheral edge
The processing method of the relatively good ring gear of performance.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of contour machining method of ring gear, includes the following steps,
S1：Cast tube carries out cast tube by being poured into after steel ingot, alloy pig or scrap heating in centrifugal tube casting machine, obtain profiling ring,
The shape of the cross-sectional shape and ring gear to be processed of the profiling pipe matches, and the internal diameter of the profiling ring be more than wanted
The internal diameter of the ring gear of processing, the largest contours diameter of the profiling ring are less than the largest contours diameter of the ring gear to be processed,
The thickness of the profiling ring is more than the thickness of ring gear to be processed；
S2：Forging and stamping, the profiling ring is put into forging mold and is forged and pressed, and obtains forging；
S3：Trimming carries out trimming to the forging, obtains gear blank；
S4：Heat treatment carries out quenching treatment and temper to the outer peripheral edge of the gear blank successively, obtains ring gear.
As an improvement of the present invention, in step sl, the steel ingot, the alloy pig or the steel scrap are in medium frequency electric
1600 DEG C or more are heated in stove.
As an improvement of the present invention, in step sl, the internal diameter of the profiling ring is than in ring gear to be processed
The big 3-5mm of diameter, the small 3-5mm of largest contours diameter for the ring gear that the largest contours diameter of the profiling ring is processed than described, institute
The thickness for stating profiling ring is bigger 4-8mm than the thickness of ring gear to be processed.
As an improvement of the present invention, right immediately after the profiling ring being cooled to 1000-1200 DEG C after the completion of cast tube
The profiling ring is forged and pressed.
As an improvement of the present invention, trimming is carried out to the forging immediately after the completion of forging and stamping, by the tooth after trimming
Base carries out quenching treatment after being cooled to 860-900 DEG C, be tempered after the gear blank is cooled to 250-350 DEG C after quenching treatment
Processing.
Above-mentioned technical proposal is used, the invention has the advantages that：
1, the present invention directly uses steel ingot, alloy pig or steel scrap as raw material, is obtained again through cast tube and forging
Ring gear, it is simple for process, and stock utilization is relatively high.Simultaneously as centrifugal tube casting machine progress cast tube is used, outside profiling ring
The density of material of peripheral part be much larger than its inner peripheral position density of material so that the outer peripheral edge of the ring gear of acquisition it is resistance to
The mechanical performances such as mill property, hardness and strength are much larger than and inner peripheral position, the mechanical performance of each tooth in outer peripheral edge are relatively preferable.
2, cast tube is carried out as a result of centrifugal tube casting machine, the density of material of profiling ring outer peripheral edge is much larger than its inner circumferential
The density of material of edge position, the penetration depth of heat treatment is relatively large, and seepage velocity is also relatively fast, effectively increases heat treatment
Quality and efficiency.
3, due to first having carried out cast tube before forging, the surface smoothness of ring gear outer peripheral edge is relatively high.
4, it due to carrying out trimming to forging immediately after the completion of forging and stamping, is carried out after gear blank is cooled to 860-900 DEG C after trimming
Quenching treatment carries out temper after gear blank is cooled to 250-350 DEG C after quenching treatment, it is ensured that in heat treatment process without into
Row heating, need to only be kept the temperature, and production energy consumption is relatively low.
Description of the drawings
Fig. 1 for the ring gear to be obtained in embodiment structural schematic diagram；
Fig. 2 illustrates for the sectional structure for the ring gear to be obtained in embodiment.
Specific implementation mode
The present invention is described further in the following with reference to the drawings and specific embodiments.
The present embodiment provides a kind of processing method of ring gear, the structure of the ring gear is as depicted in figs. 1 and 2.The present embodiment carries
The processing method of confession includes the following steps,
S1：Cast tube carries out cast tube by being poured into after steel ingot, alloy pig or scrap heating in centrifugal tube casting machine, obtain profiling ring,
Preferably, steel ingot, alloy pig or steel scrap are first heated to 1600 DEG C or more in middle frequency furnace and then pour into centrifugal tube casting machine
Middle carry out cast tube.
The shape of the cross-sectional shape and ring gear to be processed of the profiling ring that cast tube obtains matches, and the Q-RING
Internal diameter is more than the internal diameter of ring gear to be processed, and the largest contours diameter of the Q-RING is less than the maximum of the ring gear to be processed
Outline diameter, the thickness of the profiling ring are more than the thickness of ring gear to be processed.Specifically, in the present embodiment, profiling ring
Internal diameter is bigger 3-5mm than the internal diameter of ring gear to be processed, and the ring gear that the largest contours diameter of profiling ring is processed than described is most
The small 3-5mm of big outline diameter, the thickness of the profiling ring are bigger 4-8mm than the thickness of ring gear to be processed.
S2：Forging and stamping immediately put Q-RING after cooling after profiling ring is cooled to 1000-1200 DEG C by cast tube after the completion
Enter in forging mold and forged and pressed, obtain forging, i.e., profiling ring is forged and pressed by the way of hot forging in the present embodiment, and
Without being heated before forging and stamping.Specific forging mold and forging and stamping mode are identical as conventional forging technology, not originally
The emphasis of embodiment, and will not be described here in detail.
S3：Trimming carries out trimming to forging, that is, uses the rim charge that punching machine or cutting machine generate forging process from forging
Upper excision obtains gear blank.Preferably, trimming, i.e. hot trimming are carried out to forging immediately after the completion of forging and stamping, not only can ensured
Forging still has preferable plasticity, is convenient for trimming, while subsequent heat treatment can be caused to need again to avoid forging thermal losses
Heating has and utilizes reduction production energy consumption.
S5：Heat treatment carries out quenching treatment and temper to the outer peripheral edge of gear blank (i.e. the position with tooth) successively, obtains
Obtain ring gear.Specifically, quenching treatment is carried out after gear blank is first cooled to 860-900 DEG C after trimming again, first by tooth after quenching treatment
Base carries out temper again after being cooled to 250-350 DEG C.
The present invention is described in detail above in conjunction with specific embodiment, but embodiments of the present invention and is not only limited
In the above embodiment, those skilled in the art can make various modifications according to the prior art to the present invention, such as above-mentioned implementation
Middle frequency furnace in example is changed to other heating equipments etc., and these are all within the scope of protection of the present invention.
Claims (5)
1. a kind of contour machining method of ring gear, which is characterized in that include the following steps,
S1：Cast tube carries out cast tube by being poured into after steel ingot, alloy pig or scrap heating in centrifugal tube casting machine, obtain profiling ring, described
The cross-sectional shape of profiling pipe and the shape of ring gear to be processed match, and the internal diameter of the profiling ring is more than to be processed
Ring gear internal diameter, the largest contours diameter of the profiling ring is less than the largest contours diameter of the ring gear to be processed, described
The thickness of profiling ring is more than the thickness of ring gear to be processed；
S2：Forging and stamping, the profiling ring is put into forging mold and is forged and pressed, and obtains forging；
S3：Trimming carries out trimming to the forging, obtains gear blank；
S4：Heat treatment carries out quenching treatment and temper to the outer peripheral edge of the gear blank successively, obtains ring gear.
2. the contour machining method of ring gear as described in claim 1, which is characterized in that in step sl, the steel ingot, described
Alloy pig or the steel scrap are heated to 1600 DEG C or more in middle frequency furnace.
3. the contour machining method of ring gear as described in claim 1, which is characterized in that in step sl, the profiling ring
Internal diameter is bigger 3-5mm than the internal diameter of ring gear to be processed, the ring gear that the largest contours diameter of the profiling ring is processed than described
The small 3-5mm of largest contours diameter, the thickness of the profiling ring is bigger 4-8mm than the thickness of ring gear to be processed.
4. the contour machining method of ring gear as described in claim 1, which is characterized in that after the completion of cast tube that the profiling ring is cold
But to after 1000-1200 DEG C, the profiling ring is forged and pressed immediately.
5. the contour machining method of ring gear as claimed in claim 4, which is characterized in that immediately to the forging after the completion of forging and stamping
Trimming is carried out, carries out quenching treatment after the gear blank is cooled to 860-900 DEG C after trimming, it is after quenching treatment that the gear blank is cold
But temper is carried out after arriving 250-350 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283242.4A CN108480937A (en) | 2018-04-02 | 2018-04-02 | A kind of contour machining method of ring gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283242.4A CN108480937A (en) | 2018-04-02 | 2018-04-02 | A kind of contour machining method of ring gear |
Publications (1)
| Publication Number | Publication Date |
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| CN108480937A true CN108480937A (en) | 2018-09-04 |
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| CN201810283242.4A Pending CN108480937A (en) | 2018-04-02 | 2018-04-02 | A kind of contour machining method of ring gear |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1623703A (en) * | 2003-12-01 | 2005-06-08 | 上海汽车股份有限公司 | Technology for forging ring gear of synchro device |
| CN101279417A (en) * | 2008-05-15 | 2008-10-08 | 宁夏天地奔牛实业集团有限公司 | Method for manufacturing heavy type mining gipsy sheave |
| CN101332489A (en) * | 2008-08-01 | 2008-12-31 | 上海东芙冷锻制造有限公司 | Cold-forging precise forming technique of gear sleeve |
| CN102873510A (en) * | 2012-09-04 | 2013-01-16 | 太原科技大学 | Method for directly producing ring parts by centrifugal casting and cold rolling |
| CN107009103A (en) * | 2017-04-26 | 2017-08-04 | 福建泉海工贸投资集团有限公司 | A kind of production technology of sprocket wheel or ring gear |
| CN107387724A (en) * | 2017-07-06 | 2017-11-24 | 福建泉海工贸投资集团有限公司 | A kind of hollow ring gear and its production technology |
-
2018
- 2018-04-02 CN CN201810283242.4A patent/CN108480937A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1623703A (en) * | 2003-12-01 | 2005-06-08 | 上海汽车股份有限公司 | Technology for forging ring gear of synchro device |
| CN101279417A (en) * | 2008-05-15 | 2008-10-08 | 宁夏天地奔牛实业集团有限公司 | Method for manufacturing heavy type mining gipsy sheave |
| CN101332489A (en) * | 2008-08-01 | 2008-12-31 | 上海东芙冷锻制造有限公司 | Cold-forging precise forming technique of gear sleeve |
| CN102873510A (en) * | 2012-09-04 | 2013-01-16 | 太原科技大学 | Method for directly producing ring parts by centrifugal casting and cold rolling |
| CN107009103A (en) * | 2017-04-26 | 2017-08-04 | 福建泉海工贸投资集团有限公司 | A kind of production technology of sprocket wheel or ring gear |
| CN107387724A (en) * | 2017-07-06 | 2017-11-24 | 福建泉海工贸投资集团有限公司 | A kind of hollow ring gear and its production technology |
Non-Patent Citations (1)
| Title |
|---|
| 蒋先国: "电气化铁道接触网-零部件设计与制造", 《中国铁道出版社》 * |
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Application publication date: 20180904 |
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