CN106702135B - A kind of torsion coupling resonance type residual stress cancellation element excited by eccentric motor - Google Patents
A kind of torsion coupling resonance type residual stress cancellation element excited by eccentric motor Download PDFInfo
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- CN106702135B CN106702135B CN201710045051.XA CN201710045051A CN106702135B CN 106702135 B CN106702135 B CN 106702135B CN 201710045051 A CN201710045051 A CN 201710045051A CN 106702135 B CN106702135 B CN 106702135B
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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
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- Crystallography & Structural Chemistry (AREA)
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- Organic Chemistry (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention relates to a kind of torsion coupling resonance type residual stress cancellation elements excited by eccentric motor, the twisting vibration exported by the torsional excitation device of eccentric motor excitation is applied on the rotating shaft of high rigidity, when the speed of shaft is equal to the difference of natural bending frequency and torsional natural frequency, it is theoretical by torsion coupling resonance, the torsional excitation that one frequency is equal to torsional natural frequency can excite flexural resonance simultaneously, flexural resonance is mutually strengthened with torsional resonance, generates enough dynamic stress to eliminate the residual stress of high rigidity shaft.The present invention solves the problems, such as that torsion coupling resonance oscillating aging is limited by torsional excitation source, the residual stress of high rigidity shaft is eliminated by the torsion coupling resonance excited by eccentric motor, improves efficiency, it is simple and compact for structure, implement more convenient, working performance is relatively reliable.
Description
Technical field
It is particularly a kind of by eccentric motor excitation the present invention relates to the mechanical oscillation stress eliminating device in machinery 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
Countershaft is wanted to apply torsional excitation, when motor rotation frequency is equal to the difference of natural bending frequency and torsional natural frequency constantly, when
The torsional excitation of application is equal to torsional natural frequency, theoretical by Torsion Coupling, and eccentrically weighted shaft can excite flexural resonance simultaneously, bends
Resonance is mutually strengthened with torsional resonance, generates enough dynamic stress.The torsional excitation mode used at present mainly has electromagnetic exciting
Device, Pneumatic vibration exciter, hydraulic vibration exciter, however these exciter structures are complicated, reliability is not high, expensive, maintenance cost
Height, performance difficulty, it is difficult to which popularization uses.
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 production
It the problem of raw horizontal torsion coupled resonance oscillating aging restricted torsional excitation source, 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:
It is a kind of by eccentric motor excite torsion coupling resonance type residual stress cancellation element, including 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 include exciting rack, the exciting arm of force, positive electricity polar ring, negative electricity polar ring, the first eccentric motor, second partially
Electrocardiograph, positive brush, negative brush and brush pedestal;
Shaft is mounted on by clutch shaft bearing and first bearing seat and second bearing and second bearing seat on chassis, disk
It is fixed in shaft and coaxial with 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 shaft one end, the shaft other end
The circle centre position of exciting rack bottom surface is fixedly connected on,
The center of the exciting arm of force is fixedly connected with the center of circle of exciting rack bottom surface, the first eccentric motor and the second eccentric motor
The both ends of the exciting arm of force are separately fixed at,
Positive electricity polar ring and negative electricity polar ring, which are mounted on, to be fixed on the outer tube wall of exciting rack, positive electricity polar ring and negative electricity polar ring point
It is not connected by conducting wire with the first eccentric motor and the second eccentric motor,
Positive brush and negative brush are all fixed on brush pedestal, and positive brush is contacted with positive electricity polar ring, negative brush and negative electrode
Ring contacts, and positive brush and negative brush are connected to power supply.
The exciting arm of force and be separately mounted to the first eccentric motor and second eccentric motor at exciting arm of force both ends with
The exciting arm of force is centrally formed central symmetry, and then countershaft generates torque.
For the exciting arm of force in addition to center and the junction of exciting rack, remaining both ends is partially in hanging shape
State.
A kind of torsion coupling resonance type method for removing residual stress excited by eccentric motor, which is characterized in that specific step
Suddenly it is:
(1) torsional activator excited by eccentric motor and shaft are rigidly connected, clutch disk and eccentric mass,
(2) by test, the relation between the natural bending frequency, torsional natural frequency and rotating speed of shaft is obtained,
(3) by calculating, the torsional activator for determining to be excited by eccentric motor exports the size and frequency of torsional excitation,
(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 of excitation is set as Torsional Vibration Natural Frequency, theoretical by torsion coupling resonance, flexural resonance with
Torsional resonance is mutually strengthened, and generates enough dynamic stress to eliminate the residual stress of high rigidity shaft.
The present invention's has the prominent advantages that:
The present invention solves torsion coupling resonance oscillating aging and is not easy to apply torsional excitation to generate torsion coupling resonance
The problem of, the present apparatus is made of mostly component of machine, and reliability is high, compact-sized, at low cost, and repair is easy, and exciting force leads to
The arm of force is crossed to generate driving torque, is adapted to larger exciting scope, and the exciting arm of force is adjustable, and what eccentric motor generated swashs
Power of shaking can be adjusted by eccentric mass, eccentric distance and eccentric motor rotating speed, and eccentric block is replaced, adjusted easily, can basis
The actual conditions of experiment parts are adjusted, and flexibility is strong, in nominal speed range, can realize stepless time adjustment, are improved
The safety and reliability of torsion coupling resonance type oscillating aging.
Description of the drawings
Fig. 1 is that the structure of the torsion coupling resonance type residual stress cancellation element of the present invention by eccentric motor excitation is shown
It is intended to.
Fig. 2 is facing for the torsion coupling resonance type residual stress cancellation element of the present invention by eccentric motor excitation
Figure.
Fig. 3 is that the torsional oscillation of the torsion coupling resonance type residual stress cancellation element of the present invention by eccentric motor excitation swashs
Encourage the structure diagram 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 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 rack 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 pedestal 20;
Shaft 1 is mounted on bottom by clutch shaft bearing 9 and first bearing seat 16 and second bearing 10 and second bearing seat 17
On disk 14, disk 12 is fixed in shaft 1 and coaxial with 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 shaft one end, shaft
The other end is fixedly connected on the circle centre position of 2 bottom surface of exciting rack,
The center of the exciting arm of force 3 is fixedly connected with the center of circle of 2 bottom surface of exciting rack, and the first eccentric motor 4 and second is eccentric
Motor 5 is separately fixed at the both ends of the exciting arm of force 3,
Positive electricity polar ring 6 and negative electricity polar ring 15, which are mounted on, to be fixed on the outer tube wall of exciting rack 2, positive electricity polar ring 6 and negative electricity
Polar ring 15 is connected respectively by conducting wire 18 with the first eccentric motor 4 and the second eccentric motor 5,
Positive brush 19 and negative brush are all fixed on brush pedestal 20, and positive brush 19 is contacted with positive electricity polar ring 6, negative brush with
Negative electricity polar ring 15 contacts, 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 3 both ends of the exciting arm of force
Two eccentric motors 5 are with the central symmetry that is centrally formed of the exciting arm of force 3, and then countershaft 1 generates torque.
Further, the exciting arm of force 3 is in addition to center and the junction of exciting rack, remaining both ends office
In vacant state.
Mark 8 is motor cabinet in figure.The exciting rack 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 rack, one end of cylinder barrel shaped exciting rack is equipped with bottom surface or both ends are all set
There is bottom surface.
During work, motor 7 drives shaft 1 to rotate, and shaft 1 drives the rotation of torsional excitation device, the first eccentric motor 4, second
The power cord of eccentric motor 5 is connected by conducting wire 18 through the hole in exciting rack 2 with positive electricity polar ring 6 and negative electricity polar ring 15, is turned
When axis 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 as to eccentric to first
Motor 4, the second eccentric motor 5 provide power supply and signal.After first eccentric motor 4 and the second eccentric motor 5 connection power initiation
Generate vibration so that the exciting arm of force vibrates, and then countershaft 1 generates torque.
The twisting vibration exported by torsional excitation device is applied in the shaft 1 of the rotation of high rigidity, whenThe rotary frequency of shaft 1 RateIt is equal toNatural bending frequencyWithTorsional natural frequencyDifference when, theoretical by torsion coupling resonance, it is solid that a frequency is equal to torsion
The torsional excitation for having frequency can excite flexural resonance simultaneously, and flexural resonance is mutually strengthened with torsional resonance, generates enough
Dynamic stress eliminates the residual stress of high rigidity 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 shaft are rigidly connected, clutch disk and eccentric mass,
(2) by test, the relation between the natural bending frequency, torsional natural frequency and rotating speed of shaft is obtained,
(3) by calculating, the torsional activator for determining to be excited by eccentric motor exports the size and frequency of torsional excitation,
(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 of excitation is set as Torsional Vibration Natural Frequency, theoretical by torsion coupling resonance, flexural resonance with
Torsional resonance is mutually strengthened, and generates enough dynamic stress to eliminate the residual stress of high rigidity shaft.
Claims (4)
1. it is a kind of by eccentric motor excite torsion coupling resonance type residual stress cancellation element, which is characterized in that including 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 include exciting rack, 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 pedestal;
Shaft is mounted on by clutch shaft bearing and first bearing seat and second bearing and second bearing seat on chassis, and disk is fixed
In shaft and coaxial with 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 shaft one end, and the shaft other end is fixed
The circle centre position of exciting rack bottom surface is connected to,
The center of the exciting arm of force is fixedly connected with the center of circle of exciting rack bottom surface, the first eccentric motor and the second eccentric motor difference
The both ends of the exciting arm of force are fixed on,
Positive electricity polar ring and negative electricity polar ring, which are mounted on, to be fixed on the outer tube wall of exciting rack, and positive electricity polar ring and negative electricity polar ring lead to respectively
Conducting 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 pedestal, and positive brush is contacted with positive electricity polar ring, and negative brush connects with negative electricity polar ring
It touches, positive brush and negative brush are connected to power supply.
2. the torsion coupling resonance type residual stress cancellation element excited as described in claim 1 by eccentric motor, feature
Be, the exciting arm of force and be separately mounted to exciting arm of force both ends the first eccentric motor and the second eccentric motor with exciting
The arm of force is centrally formed central symmetry, and then countershaft generates torque.
3. the torsion coupling resonance type residual stress cancellation element excited as described in claim 1 by eccentric motor, feature
It is, for the exciting arm of force in addition to center and the junction of exciting rack, remaining both ends is partially in vacant state.
4. a kind of torsion coupling resonance type residual stress cancellation element excited as described in claim 1 by eccentric motor makes
With method, which is characterized in that concretely comprise the following steps:
(1) torsional activator excited by eccentric motor and shaft are rigidly connected, clutch disk and eccentric mass,
(2) by test, the relation between the natural bending frequency, torsional natural frequency and rotating speed of shaft is obtained,
(3) by calculating, the torsional activator for determining to be excited by eccentric motor exports the size and frequency of torsional excitation,
(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, flexural resonance and torsion theoretical by torsion coupling resonance
Resonance is mutually strengthened, and generates enough dynamic stress to eliminate the residual stress of high rigidity shaft.
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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 |
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 |
CN104390778B (en) * | 2014-10-29 | 2017-11-07 | 吉林大华机械制造有限公司 | Eccentric gear type torsional activator and eccentric gear type torsional vibration excitation system |
-
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 |
CN104390778B (en) * | 2014-10-29 | 2017-11-07 | 吉林大华机械制造有限公司 | Eccentric gear type torsional activator 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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