CN103710528A - Multiple resonance multi-shaft vibration aging device and realization method thereof - Google Patents
Multiple resonance multi-shaft vibration aging device and realization method thereof Download PDFInfo
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- CN103710528A CN103710528A CN201310683458.7A CN201310683458A CN103710528A CN 103710528 A CN103710528 A CN 103710528A CN 201310683458 A CN201310683458 A CN 201310683458A CN 103710528 A CN103710528 A CN 103710528A
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Abstract
The invention relates to a multiple resonance multi-shaft vibration aging device comprising vibration exciters, vibration excitation blocks and spring damping assemblies, wherein the vibration exciters are arranged on the vibration excitation blocks, the spring damping assemblies are arranged at two sides of the vibration exciters and are connected with the vibration excitation blocks, and the vibration excitation blocks are connected with multi-shaft parallel connection workpieces. A realization method of the device is as follows: different vibration excitation frequencies are generated by all the vibration exciters and simultaneously act on the vibration excitation blocks, and multiple resonance frequencies far higher than the original vibration excitation frequencies of all the vibration exciters are generated; the vibration excitation blocks act on the parallel connection workpieces at the multiple resonance frequencies close to the inherent frequencies of the multi-shaft parallel connection workpieces; when the inherent frequencies of the multi-shaft parallel connection workpieces and the vibration excitation frequencies of all the vibration exciters are in a plurality of linear combination relationships, the parallel connection workpieces generate main resonance and corresponding dynamic stress to eliminate the residual stress of each shaft. By using the multiple resonance multi-shaft vibration aging device, the problem that the residual stress can not be eliminated effectively because the vibration excitation frequencies of the traditional vibration exciters are smaller than the inherent frequencies of the parallel connection workpieces can be solved, and the production efficiency can be increased.
Description
Technical field
The present invention relates to vibration ageing device and its implementation in field of machining, particularly a kind of multiple resonance formula multi ageing device and its implementation.
Background technology
Oscillating aging is a kind of important method of eliminating workpiece unrelieved stress, compare with weathering and artificial thermal life, oscillating aging has pollution-free, less investment, efficiency is high, save the features such as place, time and the energy, in avoiding thermal life process, issuable workpiece oxidation, phase transformation and workpiece are heated inequality and cause fission or in process of cooling, produce the new aspects such as stress also have benefit.The vibrator of existing vibration ageing device is subject to the restriction of motor speed and eccentric mechanism maximum speed of revolution, its excited frequency is all less than 200Hz, so the oscillating aging of high rigidity workpiece is the problem that is difficult to overcome always, also become the bottleneck that restriction oscillating aging is further promoted the use of.For natural bending frequency, be less than the axial workpiece of 200Hz, can eliminate unrelieved stress by existing oscillating aging mode, but for natural frequency, be greater than the part of 100Hz, once can only process an axle, for the less axial workpiece of natural frequency once treatable number of spare parts be also limited, working efficiency is not high.Increase work efficiency, just many axle classes (optical axis or bent axle) clamping need to be carried out to oscillating aging processing together simultaneously, but because the bending stiffness after the parallel connection of many axle classes enlarges markedly, whole natural bending frequency can improve, restriction far beyond eccentric activator excited frequency 200Hz, use existing oscillation time-effect method to carry out exciting to many axle classes workpiece in parallel and cannot produce resonance, cannot effectively eliminate the unrelieved stress of workpiece.
Concerning once processing many shaft-like workpieces simultaneously, the multiple resonance frequency higher than many axle classes inherent frequency of workpiece in parallel being produced by multiple resonance system, remake for many axle classes workpiece in parallel and make it produce primary resonance, produce corresponding dynamic stress and just can eliminate the unrelieved stress of every axle.Multiple resonance formula oscillation time-effect method can solve the problem of high rigidity workpiece resonance, also can significantly improve working efficiency.The method also can be applied in the occasion of other high rigidity workpiece, and suitability is strong.
Summary of the invention
The object of the present invention is to provide a kind of multiple resonance formula multi ageing device and its implementation, solve the excited frequency running into when existing oscillating aging is applied to high rigidity workpiece that many shaft-like workpieces compose in parallel and much smaller than system frequency, cannot make this parallel connection workpiece produce the technical problem of resonance.
The technical scheme that the present invention addresses the above problem is as follows:
1. a multiple resonance formula multi ageing device, comprise vibrator, exciting piece, adjustable non-linear spring and adjustable damping, vibrator is arranged on exciting piece, adjustable non-linear spring and adjustable damping form spring damping subassembly, spring damping subassembly is arranged on vibrator both sides, spring damping subassembly is connected with exciting piece, and exciting piece is connected with multiaxis workpiece in parallel.
2. the implementation method of multiple resonance formula multi ageing device described in, by each described vibrator, produce different excited frequency actings in conjunction in exciting piece and produce the multiple resonance frequency far above the former excited frequency of each vibrator, exciting piece again with the multiple resonance frequency effect that approaches many axle classes (optical axis or bent axle) inherent frequency of workpiece in parallel on workpiece, between the natural frequency of workpiece in parallel and the excited frequency of each vibrator, meet a plurality of linear combination relations, workpiece in parallel produces the unrelieved stress of primary resonance and every axle of corresponding dynamic stress elimination, concrete steps are:
(1) according to actual demands of engineering, determine the quantity of vibrator,
(2) by finite element simulation and vibration-testing, obtain each rank natural bending frequency of many axle classes workpiece in parallel,
(3) by the theory of nonlinear oscillation, by the method for inversion, determine the stiffness parameters of adjustable non-linear spring, damping adjustable damping parameter, to realize, meet the condition that multiple resonance system produces multiple resonance,
(4) by humorous response analysis, set excited frequency, the exciting force size of described each vibrator, to produce enough dynamic stress,
(5) start described each vibrator, make multiple resonance system produce multiple resonance frequency, the exciting piece in multiple resonance system remakes for many axle classes workpiece in parallel, produces the unrelieved stress that primary resonance and corresponding dynamic stress are eliminated every axle.
Outstanding advantages of the present invention is:
Although the rigidity of many axle class workpiece in parallel is high, natural frequency is large, multiple resonance also can make this high Stiffness workpiece produce primary resonance under the effect of multiple resonance excited frequency, can overcome the excited frequency of existing vibration excitor with time effect much smaller than the defect of high rigidity inherent frequency of workpiece, the high rigidity workpiece that many axle classes compose in parallel of problem cannot once effectively process to(for) existing oscillating aging, the present invention can reach good effect of vibration stress relief.
Accompanying drawing explanation
Fig. 1 is multiple resonance formula multi ageing device structural representation described in embodiment.
Fig. 2 is multiple resonance formula multi ageing device bent axle installation way schematic diagram described in embodiment.
Fig. 3 is multiple resonance formula multi ageing device exciting mode figure described in embodiment.
Fig. 4 is multiple resonance formula multi ageing device left view described in embodiment.
Fig. 5 is multiple resonance formula multi ageing device model sketch of the present invention.
Embodiment
Take 3 vibrators and 10 bent axles 3 heavily resonance technical scheme of the present invention is described further as example.
Contrast Fig. 1-Fig. 5, a kind of multiple resonance formula multi ageing device, comprise stiff baseplate 1, the first back-up block 2, the first V-type briquetting 3, the first half slot 4, bent axle 5, frame 6, the first support bar 8, the first adjustable non-linear spring 9, the first suspension rod 10, the first adjustable damping 11, the second suspension rod 13, the second adjustable non-linear spring 14, the second adjustable damping 15, the second support bar 16, exciting piece 18, the first vibrator 7, the second vibrator 12, the 3rd vibrator 17, top board 22, press table 23, the second back-up block 21, the second V-type briquetting 19 and the second half slot 20.
Concrete mode of connection is: the first vibrator 7, the second vibrator 12 and the 3rd vibrator 17 are placed in the same way on exciting piece 18 and are bolted respectively, exciting piece 18 is connected by bolt group with top board 22, the center main axle journal upper semi-circle of bent axle 5 contacts with the V-type groove of top board 22, the center main axle journal lower half circle of bent axle 5 contacts with the V-type groove of press table 23, and top board 22 is connected by bolt group with press table 23 and applies preliminary tension; The lower half circle of bent axle 5 large axle heads is supported by the first half slot 4, the upper semi-circle of bent axle 5 large axle heads contacts with the first V-type briquetting 3, the top of the first half slot 4 is connected by bolt group with the first V-type briquetting 3 and applies preliminary tension, the bottom of the first half slot 4 is connected by pin group with the top of the first back-up block 2, and the bottom of the first back-up block 2 and stiff baseplate 1 are connected; The lower half circle of bent axle 5 little axle heads is supported by the second half slot 20, the upper semi-circle of bent axle 5 little axle heads contacts with the second V-type briquetting 19, the top of the second half slot 20 is connected by bolt group with the second V-type briquetting 19 and applies preliminary tension, the bottom of the second half slot 20 is connected by pin group with the top of the second back-up block 21, and the bottom of the second back-up block 21 and stiff baseplate 1 are connected; Frame 6 is fixed on stiff baseplate 1; One end of the first adjustable non-linear spring 9 and the first adjustable damping 11 subassemblies is connected by pin with the first suspension rod 10, and the other end is connected by pin with the first support bar 8, and the first suspension rod 10 is fixed in frame 6, and the first support bar 8 is fixed on exciting piece 18; One end of the second adjustable non-linear spring 14 and the second adjustable damping 15 subassemblies is connected by pin with the second suspension rod 13, and the other end is connected by pin with the second support bar 16, and the second suspension rod 13 is fixed in frame 6, and the second support bar 16 is fixed on exciting piece 18; Two spring damping subassemblies are symmetrically distributed in the second vibrator 12 both sides.
The implementation method of described multiple resonance formula multi ageing device, by each described vibrator, produce different excited frequency actings in conjunction in exciting piece and produce the multiple resonance frequency far above the former excited frequency of each vibrator, exciting piece again with the multiple resonance frequency effect that approaches many axle classes (optical axis or bent axle) inherent frequency of workpiece in parallel on workpiece, between the natural frequency of workpiece in parallel and the excited frequency of each vibrator, meet a plurality of linear combination relations, workpiece in parallel produces the unrelieved stress of primary resonance and every axle of corresponding dynamic stress elimination, concrete steps are:
(1) according to actual demands of engineering, determine the quantity of vibrator,
(2) by finite element simulation and vibration-testing, obtain each rank natural bending frequency of many axle classes workpiece in parallel,
(3) by the theory of nonlinear oscillation, by the method for inversion, determine the stiffness parameters of adjustable non-linear spring, damping adjustable damping parameter, to realize, meet the condition that multiple resonance system produces multiple resonance,
(4) by humorous response analysis, set excited frequency, the exciting force size of described each vibrator, to produce enough dynamic stress,
(5) start described each vibrator, make multiple resonance system produce multiple resonance frequency, the exciting piece in multiple resonance system remakes for many axle classes workpiece in parallel, produces the unrelieved stress that primary resonance and corresponding dynamic stress are eliminated every axle.
Principle of the present invention is: before work, regulate elastic parameter and the damping adjustable damping parameter of adjustable non-linear spring, excited frequency size, the exciting force of the first vibrator 7, the second vibrator 12 and the 3rd vibrator 17 are big or small, to realize, meet the condition that many axle classes workpiece in parallel produces multiple resonance, during work, the first vibrator 7, the second vibrator 12 and the 3rd vibrator 17 are respectively with exciting force F
1cos (ω
1t+ α
1), F
2cos (ω
2t+ α
2) and F
3cos (ω
3t+ α
3) acting on exciting piece 18, exciting piece 18 remakes for multiaxis workpiece in parallel and produces multiple resonance, wherein, F
1be the amplitude of the exciting force of the first vibrator 7, F
2be the exciting force amplitude of the second vibrator 12, F
3be the amplitude of the exciting force of the 3rd vibrator 17, ω
1be the excited frequency of the first vibrator 7, ω
2be the excited frequency of the second vibrator 12, ω
3be the excited frequency of the 3rd vibrator 17, α
1be the phasing degree of the first vibrator 7, α
2be the phasing degree of the second vibrator 12, α
3it is the phasing degree of the second vibrator 12.
Claims (2)
1. a multiple resonance formula multi ageing device, it is characterized in that: comprise vibrator, exciting piece, adjustable non-linear spring and adjustable damping, vibrator is arranged on exciting piece, adjustable non-linear spring and adjustable damping form spring damping subassembly, spring damping subassembly is arranged on vibrator both sides, spring damping subassembly is connected with exciting piece, and exciting piece is connected with multiaxis workpiece in parallel.
2. an implementation method that is applicable to multiple resonance formula multi ageing device claimed in claim 1, it is characterized in that: described vibrator is no less than 3, by each vibrator, produce different excited frequency actings in conjunction in exciting piece and produce the multiple resonance frequency far above the former excited frequency of each vibrator, exciting piece again with the multiple resonance frequency effect that approaches many axle classes inherent frequency of workpieces in parallel on workpiece in parallel, between the natural frequency of workpiece in parallel and the excited frequency of each vibrator, meet a plurality of linear combination relations, workpiece in parallel produces the unrelieved stress of primary resonance and every axle of corresponding dynamic stress elimination, concrete steps are:
(1) according to actual demands of engineering, determine the quantity of vibrator,
(2) by finite element simulation and vibration-testing, obtain each rank natural bending frequency of many axle classes workpiece in parallel,
(3) by the theory of nonlinear oscillation, by the method for inversion, determined stiffness parameters and the damping adjustable damping parameter of adjustable non-linear spring, to realize, meet the condition that multiple resonance system produces multiple resonance,
(4) by humorous response analysis, set excited frequency and the exciting force size of described each vibrator, to produce enough dynamic stress,
(5) start described each vibrator, make multiple resonance system produce multiple resonance frequency, the exciting piece in multiple resonance system remakes for many axle classes workpiece in parallel, produces the unrelieved stress that primary resonance and corresponding dynamic stress are eliminated every axle.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768981A (en) * | 2017-01-20 | 2017-05-31 | 广西大学 | A kind of grooved cam impact type alternation torque loading device |
| CN108130413A (en) * | 2017-03-20 | 2018-06-08 | 南宁市神华振动时效技术研究所 | The girder steel oscillation time-effect method of steel structure bridge |
| CN114107651A (en) * | 2021-10-29 | 2022-03-01 | 航天材料及工艺研究所 | Method for eliminating residual stress of large-size aluminum-lithium alloy spinning shell through heat treatment |
| CN114262787A (en) * | 2020-09-16 | 2022-04-01 | 北京理工大学 | Large-scale crankshaft deformation control device |
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| US4968359A (en) * | 1989-08-14 | 1990-11-06 | Bonal Technologies, Inc. | Stress relief of metals |
| SU1629327A1 (en) * | 1988-05-27 | 1991-02-23 | Каунасский политехнический: институт им, Антанаса Снечкуса- | Device for the vibration ageing of metal articles |
| CN201109028Y (en) * | 2007-11-26 | 2008-09-03 | 中国船舶重工集团公司第七一○研究所 | Mechanically exciting type saw blade smoothing device |
| CN202039104U (en) * | 2011-04-22 | 2011-11-16 | 蔡敢为 | Nonlinear combined resonance type vibration aging device |
| CN202039103U (en) * | 2011-04-11 | 2011-11-16 | 广西大学 | Superharmonic resonance type vibration aging device for workpieces with high natural frequency |
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2013
- 2013-12-07 CN CN201310683458.7A patent/CN103710528B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1629327A1 (en) * | 1988-05-27 | 1991-02-23 | Каунасский политехнический: институт им, Антанаса Снечкуса- | Device for the vibration ageing of metal articles |
| US4968359A (en) * | 1989-08-14 | 1990-11-06 | Bonal Technologies, Inc. | Stress relief of metals |
| CN201109028Y (en) * | 2007-11-26 | 2008-09-03 | 中国船舶重工集团公司第七一○研究所 | Mechanically exciting type saw blade smoothing device |
| CN202039103U (en) * | 2011-04-11 | 2011-11-16 | 广西大学 | Superharmonic resonance type vibration aging device for workpieces with high natural frequency |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768981A (en) * | 2017-01-20 | 2017-05-31 | 广西大学 | A kind of grooved cam impact type alternation torque loading device |
| CN106768981B (en) * | 2017-01-20 | 2023-05-09 | 广西大学 | Groove cam impact type alternating torque loading device |
| CN108130413A (en) * | 2017-03-20 | 2018-06-08 | 南宁市神华振动时效技术研究所 | The girder steel oscillation time-effect method of steel structure bridge |
| CN114262787A (en) * | 2020-09-16 | 2022-04-01 | 北京理工大学 | Large-scale crankshaft deformation control device |
| CN114107651A (en) * | 2021-10-29 | 2022-03-01 | 航天材料及工艺研究所 | Method for eliminating residual stress of large-size aluminum-lithium alloy spinning shell through heat treatment |
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| CN103710528B (en) | 2016-08-31 |
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