CN105710182A - Spin-forming method for long-barrel-shaped part board - Google Patents
Spin-forming method for long-barrel-shaped part board Download PDFInfo
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- CN105710182A CN105710182A CN201610090471.5A CN201610090471A CN105710182A CN 105710182 A CN105710182 A CN 105710182A CN 201610090471 A CN201610090471 A CN 201610090471A CN 105710182 A CN105710182 A CN 105710182A
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- spinning
- mould pressing
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- forming method
- spin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
Abstract
The invention discloses a spin-forming method for a long-barrel-shaped part board. The spin-forming method comprises the following steps: firstly, selecting raw materials, and selecting an equipment compartment manufacturing raw material which is a 2024 aluminum alloy board; then, calculating to obtain the diameter and the thickness of a spun circular plate blank sheet according to the length, the outer diameter and the wall thickness of an equipment compartment as well as adding process allowance by virtue of the principle that the volume before and after forming of a spun part is unchanged; determining processing precision and a bilateral jerk value of a spinning mould, and selecting parameters of a spinning machine; under a room-temperature condition, carrying out room-temperature spin-forming workpiece trial production on the spun circular plate blank, thereby obtaining spin-formed workpiece blank; and when the surface of the spin-formed workpiece blank has pits with different depths, changing room-temperature forming into heating spin-forming, heating the spinning mould to overcome material deformation resistance, thereby obtaining a spin-formed workpiece. Circular plate blank is adopted for forming a long-barrel-shaped part with a relatively great length-diameter ratio, so that use of extrusion-formed seamless metal tube blank is reduced, and therefore, the manufacturing cost is reduced, the technological process is simplified, and the qualified rate of parts is high.
Description
Technical field
The present invention relates to coupling barrel forming technique field, particularly relate to a kind of long barrier part sheet material spin forming method.
Background technology
Aircraft devices cabin is the thin-wall long barrier part of typicality, belong to the cylindrical member needing powerful thinning major diameter relatively larger (referring generally to 2 < draw ratio < 10), particularly rear end face has the cylindrical element of inclination angle 10mm sloping platform part bigger, long to prepare, gap difficulty between blank and mould is determined, do not fit with mould after often there is part forming, part lacks the situation of material, therefore need to be repeatedly performed exemplar trial-production and choose this parameter, and to plate blank under the extruding of spinning roller blank flowing and gradually the thinning core that is adjacent to cause bigger difficulty；This common process method mainly there are two kinds: one is to use metal cylinder base mould pressing, and the part for there being degree of precision to require, metal cylinder base also needs to carry out PROCESS FOR TREATMENT rough turn, finish turning before mould pressing；Another kind is that after using plate blank roll bending to become tubular, spinning cylinder base is made in welding again, but has a longitudinal seam on blank；Using metal cylinder base mould pressing thin-wall tube-shaped element, seamless metal cylinder base is usually extrusion molding, needs shaping dies simultaneously, and cost is high, and procurement cycle is long, and also needs rough turn, finish turning before cylinder base spinning, adds the prefabricated operation of blank；In addition, using the welding of plate blank roll bending to make spinning cylinder base, butt welded seam prescription is high, and otherwise in spinning process, weld seam is easily rupturable, and then cause that part cannot shape, and during mould pressing, for convenience of the part removal after shaping, certain interval must be left between blank and core, the little then unfavorable demoulding in gap, gap width is big is then difficult to patch mould in blank flow process, causes part to lack material, and conforming product rate is relatively low.
Summary of the invention
Technical problem solved by the invention is in that to provide a kind of long barrier part sheet material spin forming method, to solve the shortcoming in above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
A kind of long barrier part sheet material spin forming method, specifically comprises the following steps that
1) choosing raw material, it is 2024 alloy plate materials that selected equipment cabin manufactures raw material, and equipment compartment draw ratio > 2, and typical wall thickness is 4mm, waits wall thickness structure；
2) calculate spinning plectane parameter, according to spinning part shape before and after volume invariance principle, by the raw material chosen according to equipment compartment length, external diameter, wall thickness and adding technology surplus in step 1), calculate spinning plectane blank sheet footpath and thickness；
3) the bilateral jerk value of spinning mold machining accuracy is determined, in order to adjust spinning plectane blank to be processed and spinning mold gap；
4) selected spinning machine parameter, according to spinning part final state feature and part material feature, the selected roller working radius of spinning machine, main shaft rotary speed, feed rate parameter；
5) room temperature trial-production, at ambient temperature, carries out the trial-production of room temperature mould pressing workpiece, obtains mould pressing workpiece base substrate spinning plectane blank；
6) amendment forming arrangements, when after spinning roller feeding two passage of spinning machine, there is the depression that the degree of depth differs in mould pressing workpiece billet surface, and increase with spinning roller passage, number of depressions increases, and the degree of depth increases, breaking occurs in mould pressing workpiece blank of material edge, now, room temperature is shaped and changes hot spinning shaping into, and determine spinning mold and mould pressing workpiece base substrate preheating temperature, mould pressing temperature；
7) thermoforming, adopts hot spinning to shape mould pressing workpiece base substrate, spinning mold is heated, to overcome material resistance of deformation simultaneously；And in spinning process, adopt gas flame concurrent heating, to keep mould pressing workpiece base substrate temperature in spinning process to be in material mould pressing temperature range all the time, and mould pressing workpiece base substrate adds man-hour, and drawing one side is thinning on one side, processing duration, less than 15 minutes, obtains mould pressing workpiece.
In the present invention, step 2) in, calculate spinning plectane blank sheet footpath φ 485mm, thickness 9mm.
In the present invention, in step 3), the bilateral jerk value 0.05mm of spinning mold machining accuracy, spinning plectane blank to be processed and spinning mold gap are adjusted to 0.3mm by 0.1mm.
In the present invention, in step 4), selected spinning machine parameter: roller working radius R15, main shaft rotary speed 500～800r/min, feed rate 1.0～4.0.
In the present invention, in step 6), spinning mold is 350 ~ 380 DEG C with mould pressing workpiece base substrate preheating temperature, mould pressing temperature 320 DEG C.
In the present invention, in step 7), adopt electric heating tube to be heated spinning mold, and adopt the control chamber with K type thermocouple to control spinning mold temperature.
In the present invention, in step 7), mould pressing workpiece base substrate is preheated, adopt resistance furnace heating.
In the present invention, in step 7), the temperature between spinning mold and mould pressing workpiece base substrate adopts surface thermometer monitoring.
Beneficial effect: the present invention adopts plectane blank forming relatively big L/D ratio cylindrical member, particularly rear end face has the cylindrical element of inclination angle 10mm sloping platform part bigger, long, with minimizing, the seamless metal pipe of extrusion molding is used, thus reducing manufacturing cost, process simplification, improve part qualification rate high, efficiently solve manufacture equipment compartment and use seamless metal cylinder base cost high, and the problem using plate blank roll bending welded seam quality difficulty control.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with embodiment, the present invention is expanded on further.
A kind of long barrier part sheet material spin forming method, specifically comprises the following steps that
1) choosing raw material, it is 2024 alloy plate materials that equipment compartment manufactures raw material, and equipment compartment draw ratio > 2, and typical wall thickness is 4mm, waits wall thickness structure；
2) calculate spinning plectane parameter, according to spinning part shape before and after volume invariance principle, by the raw material chosen according to equipment compartment length, external diameter, wall thickness and adding technology surplus in step 1), calculate spinning plectane blank sheet footpath φ 485mm, thickness 9mm；
3) determining the bilateral jerk value of spinning mold machining accuracy, to adjust spinning plectane blank and spinning mold gap, wherein, the bilateral jerk value 0.05mm of spinning mold machining accuracy, spinning plectane blank and spinning mold gap are adjusted to 0.3mm by 0.1mm；
4) selected spinning machine parameter, according to spinning part final state feature and part material feature, selected spinning machine parameter: roller working radius R15, main shaft rotary speed 500～800r/min, feed rate 1.0～4.0；
5) room temperature trial-production, at ambient temperature, carries out the trial-production of room temperature mould pressing workpiece, obtains mould pressing workpiece base substrate spinning plectane blank；
6) amendment forming arrangements, when, after spinning roller feeding two passage of spinning machine, the depression that the degree of depth differs occurs in mould pressing workpiece billet surface, and increases with passage, number of depressions increases, the degree of depth increases, and breaking occurs in mould pressing workpiece blank of material edge, now, room temperature is shaped and changes hot spinning shaping into, 2024 alloy plate material mould pressing temperature ranges are narrow, it is determined that mould is 350 ~ 380 DEG C with mould pressing workpiece base substrate preheating temperature, mould pressing temperature 320 DEG C；
7) thermoforming, adopts hot spinning to shape mould pressing workpiece base substrate, to overcome material resistance of deformation, obtains mould pressing workpiece；Adopt electric heating tube to be heated spinning mold, and adopt the control chamber with K type thermocouple to control spinning mold temperature；Mould pressing workpiece base substrate is preheated, adopts resistance furnace heating to realize；Simultaneously in spinning process, adopting gas flame concurrent heating, to keep mould pressing workpiece base substrate temperature in spinning process to be in material mould pressing temperature range all the time, the temperature between spinning mold and mould pressing workpiece base substrate adopts surface thermometer monitoring；And mould pressing workpiece base substrate adds man-hour, and drawing one side is thinning on one side, processing duration 9 minutes.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; described in above-described embodiment and description is that principles of the invention is described; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within the claimed scope of the invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (8)
1. one kind long barrier part sheet material spin forming method, it is characterised in that specifically comprise the following steps that
1) choosing raw material, it is 2024 alloy plate materials that selected equipment cabin manufactures raw material, and equipment compartment draw ratio > 2, and typical wall thickness is 4mm, waits wall thickness structure；
2) calculate spinning plectane parameter, shape front and back volume invariance principle according to spinning part, according to equipment compartment length, external diameter, wall thickness and adding technology surplus in step 1), calculate spinning plectane blank sheet footpath and thickness；
3) the bilateral jerk value of spinning mold machining accuracy is determined；
4) selected spinning machine parameter, according to spinning part final state feature and part material feature, the selected roller working radius of spinning machine, main shaft rotary speed, feed rate parameter；
5) room temperature trial-production, at ambient temperature, carries out the trial-production of room temperature mould pressing workpiece, obtains mould pressing workpiece base substrate spinning plectane blank；
6) amendment forming arrangements, when after spinning roller feeding two passage of spinning machine, there is the depression that the degree of depth differs in mould pressing workpiece billet surface, and increase with spinning roller passage, number of depressions increases, and the degree of depth increases, mould pressing workpiece blank of material edge break, now, room temperature is shaped and changes hot spinning shaping into, and determine spinning mold and mould pressing workpiece base substrate preheating temperature, mould pressing temperature；
7) thermoforming, adopts hot spinning to shape mould pressing workpiece base substrate, spinning mold is heated, to overcome material resistance of deformation simultaneously；And in spinning process, adopt gas flame concurrent heating, to keep mould pressing workpiece base substrate temperature in spinning process to be in material mould pressing temperature range all the time, and mould pressing workpiece base substrate adds man-hour, and drawing one side is thinning on one side, processing duration, less than 15 minutes, obtains mould pressing workpiece.
2. the long barrier part sheet material spin forming method of one according to claim 1, it is characterised in that step 2) in, calculate spinning plectane blank sheet footpath φ 485mm, thickness 9mm.
3. the long barrier part sheet material spin forming method of one according to claim 1, it is characterised in that in step 3), the bilateral jerk value 0.05mm of spinning mold machining accuracy, spinning plectane blank to be processed and spinning mold gap are adjusted to 0.3mm by 0.1mm.
4. the long barrier part sheet material spin forming method of one according to claim 1, it is characterised in that in step 4), selected spinning machine parameter: roller working radius R15, main shaft rotary speed 500～800r/min, feed rate 1.0～4.0.
5. the long barrier part sheet material spin forming method of one according to claim 1, it is characterised in that in step 6), spinning mold is 350 ~ 380 DEG C with mould pressing workpiece base substrate preheating temperature, mould pressing temperature 320 DEG C.
6. the long barrier part sheet material spin forming method of one according to claim 1, it is characterised in that in step 7), adopts electric heating tube to be heated spinning mold, and adopts the control chamber with K type thermocouple to control spinning mold temperature.
7. the long barrier part sheet material spin forming method of one according to claim 1, it is characterised in that in step 7), preheats mould pressing workpiece base substrate, adopts resistance furnace heating.
8. the long barrier part sheet material spin forming method of one according to claim 1, it is characterised in that in the present invention, in step 7), the temperature between spinning mold and mould pressing workpiece base substrate adopts surface thermometer monitoring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610090471.5A CN105710182B (en) | 2016-02-18 | 2016-02-18 | A kind of long barrier part plate spin forming method |
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| CN201610090471.5A CN105710182B (en) | 2016-02-18 | 2016-02-18 | A kind of long barrier part plate spin forming method |
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| CN105710182B CN105710182B (en) | 2018-05-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108202204A (en) * | 2016-12-16 | 2018-06-26 | 沈阳铸造研究所 | The high anti-corrosion charging basket spin forming method of ceramic core high temperature and pressure depoling equipment |
| CN109201831A (en) * | 2017-07-25 | 2019-01-15 | 中国航空制造技术研究院 | A kind of method that large size spinning lathe synchronizes spinning control |
| CN111922167A (en) * | 2020-08-19 | 2020-11-13 | 西安航天发动机有限公司 | Hot spinning forming method for variable-wall-thickness extension section of low-density niobium alloy |
| CN112317588A (en) * | 2020-11-16 | 2021-02-05 | 西安航天动力机械有限公司 | Diameter-narrowing spinning method for controlling shape precision of straight cylinder part |
| CN112435640A (en) * | 2020-11-20 | 2021-03-02 | 郭福利 | Method for preparing seamless metal drum set |
| CN113369325A (en) * | 2021-06-11 | 2021-09-10 | 中国兵器工业第五九研究所 | Extrusion forming process |
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| CN105107915A (en) * | 2015-09-14 | 2015-12-02 | 航天材料及工艺研究所 | Technological method for precise spinning forming of large magnesium alloy thin-walled cylindrical part |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108202204A (en) * | 2016-12-16 | 2018-06-26 | 沈阳铸造研究所 | The high anti-corrosion charging basket spin forming method of ceramic core high temperature and pressure depoling equipment |
| CN108202204B (en) * | 2016-12-16 | 2020-01-21 | 沈阳铸造研究所 | Spinning forming method of high-corrosion-resistance charging basket for ceramic core high-temperature high-pressure depoling device |
| CN109201831A (en) * | 2017-07-25 | 2019-01-15 | 中国航空制造技术研究院 | A kind of method that large size spinning lathe synchronizes spinning control |
| CN109201831B (en) * | 2017-07-25 | 2019-06-11 | 中国航空制造技术研究院 | A kind of method that large size spinning lathe synchronizes spinning control |
| CN111922167A (en) * | 2020-08-19 | 2020-11-13 | 西安航天发动机有限公司 | Hot spinning forming method for variable-wall-thickness extension section of low-density niobium alloy |
| CN112317588A (en) * | 2020-11-16 | 2021-02-05 | 西安航天动力机械有限公司 | Diameter-narrowing spinning method for controlling shape precision of straight cylinder part |
| CN112317588B (en) * | 2020-11-16 | 2023-07-21 | 西安航天动力机械有限公司 | Diameter-shrinking spinning method for controlling shape precision of straight cylinder part |
| CN112435640A (en) * | 2020-11-20 | 2021-03-02 | 郭福利 | Method for preparing seamless metal drum set |
| CN113369325A (en) * | 2021-06-11 | 2021-09-10 | 中国兵器工业第五九研究所 | Extrusion forming process |
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| CN105710182B (en) | 2018-05-04 |
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