CN106702135A - Eccentric-motor-excited bending-torsion coupled resonance type residual stress eliminating device - Google Patents
Eccentric-motor-excited bending-torsion coupled resonance type residual stress eliminating device Download PDFInfo
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- CN106702135A CN106702135A CN201710045051.XA CN201710045051A CN106702135A CN 106702135 A CN106702135 A CN 106702135A CN 201710045051 A CN201710045051 A CN 201710045051A CN 106702135 A CN106702135 A CN 106702135A
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- eccentric
- motor
- torsion
- excited
- exciting
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to an eccentric-motor-excited bending-torsion coupled resonance type residual stress eliminating device. Torsion vibration output by a torsion exciter excited by an eccentric motor is applied to a high-stiffness rotating rotary shaft. When the rotation frequency of the rotary shaft is equal to the difference between the bending inherent frequency and the torsion inherent frequency, according to the bending-torsion coupled resonance theory, the torsion vibration excitation with the frequency equal to the torsion inherent frequency can excite bending resonance at the same time, the bending resonance and the torsion resonance enhance each other, and enough dynamic stress is generated to eliminate the residual stress of the high-stiffness rotating shaft. The eccentric-motor-excited bending-torsion coupled resonance type residual stress eliminating device solves the problem that bending-torsion coupled resonance vibration stress relief is restrained by a torsion vibration excitation source, the residual stress of the high-stiffness rotating shaft is eliminated through the bending-torsion coupled resonance excited by the eccentric motor, and the efficiency is improved; and the eccentric-motor-excited bending-torsion coupled resonance type residual stress eliminating device is simple and compact in structure, more convenient to implement and more reliable in work performance.
Description
Technical field
It is particularly a kind of to be excited by eccentric motor the present invention relates to the mechanical oscillation stress eliminating device in mechanical field
Torsion coupling resonance type residual stress cancellation element.
Background technology
The residual stress of rotating shaft part is eliminated using the dynamic stress of torsion coupling resonance generation, is needed in implementation process
Want countershaft to apply torsional excitation, the difference for being equal to natural bending frequency and torsional natural frequency when motor rotation frequency constantly, when
The torsional excitation of applying is equal to torsional natural frequency, theoretical by Torsion Coupling, and eccentrically weighted shaft can simultaneously excite flexural resonance, bends
Resonance is mutually strengthened with torsional resonance, produces enough dynamic stress.The torsional excitation mode for using at present mainly has electromagnetic exciting
Device, Pneumatic vibration exciter, hydraulic vibration exciter, but these exciter structures are complicated, reliability is not high, expensive, maintenance cost
Height, performance difficulty, it is difficult to which popularization is used.
The content of the invention
The present invention provides a kind of torsion coupling resonance type residual stress cancellation element excited by eccentric motor, solves product
The horizontal problem for turning round the restricted torsional excitation source of coupled resonance oscillating aging of life, is excited by the torsional excitation excited by eccentric motor
Torsion coupling resonance eliminates residual stress, realizes the effect of oscillating aging.
Technical proposal that the invention solves the above-mentioned problems is as follows：
A kind of torsion coupling resonance type residual stress cancellation element excited by eccentric motor, including rotating shaft, clutch shaft bearing,
Second bearing, first bearing seat, second bearing seat, motor, shaft coupling, chassis, disk, eccentric massblock and torsional excitation
Device, the torsional excitation device includes exciting frame, the exciting arm of force, positive electricity polar ring, negative electricity polar ring, the first eccentric motor, second inclined
Electrocardiograph, positive brush, negative brush and brush base；
Rotating shaft passes through clutch shaft bearing and first bearing seat and second bearing and second bearing seat is arranged on chassis, disk
It is fixed in rotating shaft and coaxial with rotating shaft, eccentric massblock is fixed on disk；
Motor is fixedly mounted on chassis, and the output shaft of motor is connected by shaft coupling with rotating shaft one end, the rotating shaft other end
The circle centre position of exciting frame bottom surface is fixedly connected on,
The center of the exciting arm of force is fixedly connected with the center of circle of exciting frame bottom surface, the first eccentric motor and the second eccentric motor
The two ends of the exciting arm of force are separately fixed at,
Positive electricity polar ring and negative electricity polar ring are arranged on and are fixed on the outer tube wall of exciting frame, and positive electricity polar ring and negative electricity polar ring divide
Not Tong Guo wire be connected with the first eccentric motor and the second eccentric motor,
Positive brush and negative brush are all fixed on brush base, and positive brush is contacted with positive electricity polar ring, negative brush and negative electrode
Ring is contacted, and positive brush and negative brush are connected to power supply.
The exciting arm of force and be separately mounted to first eccentric motor and the second eccentric motor at exciting arm of force two ends with
The exciting arm of force is centrally formed Central Symmetry, and then countershaft produces moment of torsion.
In addition to the junction of center and exciting frame, remaining two end portions is in hanging shape to the exciting arm of force
State.
A kind of torsion coupling resonance type method for removing residual stress excited by eccentric motor, it is characterised in that specific step
Suddenly it is：
(1) torsional activator excited by eccentric motor and rotating shaft are rigidly connected, clutch disk and eccentric mass,
(2) by test, the natural bending frequency of rotating shaft, the relation between torsional natural frequency and rotating speed are obtained,
(3) by calculating, it is determined that the size and frequency of torsional excitation are exported by the torsional activator that eccentric motor is excited,
(4) motor is started, setting speed is equal to the difference of natural bending frequency and torsional natural frequency, by eccentric motor
The torsional activator output torsional excitation for exciting is set as Torsional Vibration Natural Frequency, theoretical by torsion coupling resonance, flexural resonance with
Torsional resonance is mutually strengthened, and produces enough dynamic stress to eliminate the residual stress of high rigidity rotating shaft.
It is of the invention to have the prominent advantages that：
The present invention solves torsion coupling resonance oscillating aging and is not easy to apply torsional excitation to produce torsion coupling resonance
Problem, the present apparatus is made up of component of machine mostly, and reliability is high, compact conformation, low cost, and maintenance is easy, and exciting force leads to
Cross the arm of force to produce driving torque, be adapted to larger exciting scope, and the exciting arm of force is adjustable, and what eccentric motor was produced swashs
Power of shaking can be adjusted by eccentric mass, eccentric distance and eccentric motor rotating speed, and eccentric block is changed, regulation is easy, can basis
The actual conditions for testing parts are adjusted, and flexibility is strong, in nominal speed range, it is possible to achieve stepless time adjustment, are improved
The safety and reliability of torsion coupling resonance type oscillating aging.
Brief description of the drawings
Fig. 1 is that the structure of the torsion coupling resonance type residual stress cancellation element excited by eccentric motor of the present invention is shown
It is intended to.
Fig. 2 is facing for the torsion coupling resonance type residual stress cancellation element excited by eccentric motor of the present invention
Figure.
Fig. 3 is that the torsional oscillation of the torsion coupling resonance type residual stress cancellation element excited by eccentric motor of the present invention swashs
Encourage the structural representation of device.
Fig. 4 is the enlarged diagram of location A in Fig. 3.
Specific embodiment
A kind of torsion coupling resonance type residual stress cancellation element excited by eccentric motor, including rotating shaft 1, clutch shaft bearing
9th, second bearing 10, first bearing seat 16, second bearing seat 17, motor 7, shaft coupling 11, chassis 14, disk 12, eccentric mass
Block 13 and torsional excitation device, the torsional excitation device include exciting frame 2, the exciting arm of force 3, positive electricity polar ring 6, negative electricity polar ring
15th, the first eccentric motor 4, the second eccentric motor 5, positive brush 19, negative brush and brush base 20；
Rotating shaft 1 passes through clutch shaft bearing 9 and first bearing seat 16 and second bearing 10 and second bearing seat 17 is arranged on bottom
On disk 14, disk 12 is fixed in rotating shaft 1 and coaxial with rotating shaft 1, and eccentric massblock 13 is fixed on disk 12；
Motor 7 is fixedly mounted on chassis 14, and the output shaft of motor 7 is connected by shaft coupling 11 with rotating shaft one end, rotating shaft
The other end is fixedly connected on the circle centre position of the bottom surface of exciting frame 2,
The center of the exciting arm of force 3 is fixedly connected with the center of circle of the bottom surface of exciting frame 2, and the first eccentric motor 4 and second is eccentric
Motor 5 is separately fixed at the two ends of the exciting arm of force 3,
Positive electricity polar ring 6 and negative electricity polar ring 15 are arranged on and are fixed on the outer tube wall of exciting frame 2, positive electricity polar ring 6 and negative electricity
Polar ring 15 is connected by wire 18 with the first eccentric motor 4 and the second eccentric motor 5 respectively,
Positive brush 19 and negative brush are all fixed on brush base 20, and positive brush 19 is contacted with positive electricity polar ring 6, negative brush with
Negative electricity polar ring 15 is contacted, and positive brush 19 and negative brush are connected to power supply.
Further, the exciting arm of force 3 and it is separately mounted to first eccentric motor 4 and at the two ends of the exciting arm of force 3
Two eccentric motors 5 are with the Central Symmetry that is centrally formed of the exciting arm of force 3, and then countershaft 1 produces moment of torsion.
Further, the exciting arm of force 3 is in addition to the junction of center and exciting frame, remaining both ends office
In vacant state.
Mark 8 is motor cabinet in figure.The exciting frame is cylinder barrel shaped, and positive electricity polar ring 6 and negative electricity polar ring 15 are coaxially pacified
On the cylindrical outer wall face of cylinder barrel shaped exciting frame, one end of cylinder barrel shaped exciting frame is provided with bottom surface or two ends and all sets
There is bottom surface.
During work, motor 7 drives rotating shaft 1 to rotate, and rotating shaft 1 drives the rotation of torsional excitation device, the first eccentric motor 4, second
The power line of eccentric motor 5 is connected through the hole in exciting frame 2 by wire 18 with positive electricity polar ring 6 and negative electricity polar ring 15, is turned
When axle 1 rotates, positive electricity polar ring 6 and negative electricity polar ring 15 are remained and contacted with positive brush 19 and negative brush, so that eccentric to first
Motor 4, the second eccentric motor 5 provide power supply and signal.After first eccentric motor 4 and the connection power initiation of the second eccentric motor 5
Produce vibration so that the exciting arm of force vibrates, and then countershaft 1 produces moment of torsion.
The twisting vibration exported by torsional excitation device is applied in the rotating shaft 1 of the rotation of high rigidity, whenThe rotary frequency of rotating shaft 1 RateIt is equal toNatural bending frequencyWithTorsional natural frequencyDifference when, theoretical by torsion coupling resonance, a frequency is equal to reverses solid
The torsional excitation for having frequency can be while have excited flexural resonance, flexural resonance is mutually strengthened with torsional resonance, generation is enough
Dynamic stress eliminates the residual stress of high rigidity rotating shaft 1.
A kind of torsion coupling resonance type method for removing residual stress excited by eccentric motor, concretely comprises the following steps：
(1) torsional activator excited by eccentric motor and rotating shaft are rigidly connected, clutch disk and eccentric mass,
(2) by test, the natural bending frequency of rotating shaft, the relation between torsional natural frequency and rotating speed are obtained,
(3) by calculating, it is determined that the size and frequency of torsional excitation are exported by the torsional activator that eccentric motor is excited,
(4) motor is started, setting speed is equal to the difference of natural bending frequency and torsional natural frequency, by eccentric motor
The torsional activator output torsional excitation for exciting is set as Torsional Vibration Natural Frequency, theoretical by torsion coupling resonance, flexural resonance with
Torsional resonance is mutually strengthened, and produces enough dynamic stress to eliminate the residual stress of high rigidity rotating shaft.
Claims (4)
1. a kind of torsion coupling resonance type residual stress cancellation element excited by eccentric motor, it is characterised in that including rotating shaft,
Clutch shaft bearing, second bearing, first bearing seat, second bearing seat, motor, shaft coupling, chassis, disk, eccentric massblock and
Torsional excitation device, the torsional excitation device includes exciting frame, the exciting arm of force, positive electricity polar ring, negative electricity polar ring, the first eccentric electricity
Machine, the second eccentric motor, positive brush, negative brush and brush base；
Rotating shaft passes through clutch shaft bearing and first bearing seat and second bearing and second bearing seat is arranged on chassis, and disk is fixed
In rotating shaft and coaxial with rotating shaft, eccentric massblock is fixed on disk；
Motor is fixedly mounted on chassis, and the output shaft of motor is connected by shaft coupling with rotating shaft one end, and the rotating shaft other end is fixed
The circle centre position of exciting frame bottom surface is connected to,
The center of the exciting arm of force is fixedly connected with the center of circle of exciting frame bottom surface, and the first eccentric motor and the second eccentric motor are distinguished
The two ends of the exciting arm of force are fixed on,
Positive electricity polar ring and negative electricity polar ring are arranged on and are fixed on the outer tube wall of exciting frame, and positive electricity polar ring and negative electricity polar ring lead to respectively
Wire is crossed to be connected with the first eccentric motor and the second eccentric motor,
Positive brush and negative brush are all fixed on brush base, and positive brush is contacted with positive electricity polar ring, and negative brush connects with negative electricity polar ring
Touch, positive brush and negative brush are connected to power supply.
2. the torsion coupling resonance type residual stress cancellation element for being excited by eccentric motor as claimed in claim 1, its feature
It is the exciting arm of force and to be separately mounted to first eccentric motor and the second eccentric motor at exciting arm of force two ends with exciting
The arm of force is centrally formed Central Symmetry, and then countershaft produces moment of torsion.
3. the torsion coupling resonance type residual stress cancellation element for being excited by eccentric motor as claimed in claim 1, its feature
It is that in addition to the junction of center and exciting frame, remaining two end portions is in vacant state to the exciting arm of force.
4. a kind of torsion coupling resonance type method for removing residual stress excited by eccentric motor, it is characterised in that specific steps
For：
(1) torsional activator excited by eccentric motor and rotating shaft are rigidly connected, clutch disk and eccentric mass,
(2) by test, the natural bending frequency of rotating shaft, the relation between torsional natural frequency and rotating speed are obtained,
(3) by calculating, it is determined that the size and frequency of torsional excitation are exported by the torsional activator that eccentric motor is excited,
(4) motor is started, setting speed is equal to the difference of natural bending frequency and torsional natural frequency, eccentric motor is excited
Torsional activator output torsional excitation be set as Torsional Vibration Natural Frequency, it is theoretical by torsion coupling resonance, flexural resonance with reverse
Resonance is mutually strengthened, and produces enough dynamic stress to eliminate the residual stress of high rigidity rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710045051.XA CN106702135B (en) | 2017-01-20 | 2017-01-20 | A kind of torsion coupling resonance type residual stress cancellation element excited by eccentric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710045051.XA CN106702135B (en) | 2017-01-20 | 2017-01-20 | A kind of torsion coupling resonance type residual stress cancellation element excited by eccentric motor |
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| CN106702135A true CN106702135A (en) | 2017-05-24 |
| CN106702135B CN106702135B (en) | 2018-06-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201942722U (en) * | 2010-12-31 | 2011-08-24 | 广西大学 | Six degrees of freedom vibratory stress relief device |
| CN102212672A (en) * | 2011-04-22 | 2011-10-12 | 广西大学 | Flexural coupling resonance type vibratory stress relief device and implementation method thereof |
| CN104390778A (en) * | 2014-10-29 | 2015-03-04 | 吉林大华机械制造有限公司 | Eccentric gear type torsional vibration exciter and eccentric gear type torsional vibration excitation system |
| EP2927660A1 (en) * | 2014-04-04 | 2015-10-07 | Prisma Engineering Maschinen- und Motorentechnik GmbH | Device for testing rotary test samples under load |
| CN206375965U (en) * | 2017-01-20 | 2017-08-04 | 广西大学 | A kind of torsion coupling resonance type residual stress cancellation element excited by eccentric motor |
-
2017
- 2017-01-20 CN CN201710045051.XA patent/CN106702135B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201942722U (en) * | 2010-12-31 | 2011-08-24 | 广西大学 | Six degrees of freedom vibratory stress relief device |
| CN102212672A (en) * | 2011-04-22 | 2011-10-12 | 广西大学 | Flexural coupling resonance type vibratory stress relief device and implementation method thereof |
| EP2927660A1 (en) * | 2014-04-04 | 2015-10-07 | Prisma Engineering Maschinen- und Motorentechnik GmbH | Device for testing rotary test samples under load |
| CN104390778A (en) * | 2014-10-29 | 2015-03-04 | 吉林大华机械制造有限公司 | Eccentric gear type torsional vibration exciter and eccentric gear type torsional vibration excitation system |
| CN206375965U (en) * | 2017-01-20 | 2017-08-04 | 广西大学 | A kind of torsion coupling resonance type residual stress cancellation element excited by eccentric motor |
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| Publication number | Publication date |
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| CN106702135B (en) | 2018-06-01 |
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