CN202246777U - Vibratory stress relief device for low and medium frequency shaft parts - Google Patents
Vibratory stress relief device for low and medium frequency shaft parts Download PDFInfo
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- CN202246777U CN202246777U CN2011203715756U CN201120371575U CN202246777U CN 202246777 U CN202246777 U CN 202246777U CN 2011203715756 U CN2011203715756 U CN 2011203715756U CN 201120371575 U CN201120371575 U CN 201120371575U CN 202246777 U CN202246777 U CN 202246777U
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- bracing frame
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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
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Abstract
The utility model relates to a vibratory stress relief device for low and medium frequency shaft parts. The vibratory stress relief device comprises a vibration exciter, a clamping and supporting block for clamping and supporting a workpiece and a supporting mechanism connected with the clamping and supporting block, wherein the supporting mechanism consists of a pair of left supporting frame and right supporting frame arranged oppositely and a supporting seat for installing the left supporting frame and the right supporting frame; the clamping and supporting block is rotatably connected with the left supporting frame and the right supporting frame of the supporting mechanism; and the device also comprises a vibration exciter base for installing the vibration exciter, wherein the vibration exciter base is arranged in the middle of the workpiece, and the vibration exciter, the vibration exciter base and the workpiece vibrate together during vibratory stress relief. A simple beam way is adopted, the shaft parts generate main resonance of a flexural vibration type under the excitation of the natural frequency of shaft flexural vibration of the vibration exciter, and thus, the problem that the dynamic stress generated by the traditional device cannot meet the requirement on relieving residual stress is solved; and in addition, the deformation at two ends of a shaft is also greatly increased, meanwhile, the dynamic stress of the shaft is more uniform in distribution, and therefore, the residual stress of the shaft parts can be relieved effectively.
Description
Technical field
The utility model relates to a kind of vibration ageing device, especially a kind ofly is used to subdue the vibration ageing device of flexural vibration natural frequency less than the axial workpiece of the medium and low frequency axial workpiece unrelieved stress of 200HZ.
Background technology
Vibration aging technology is a kind of method of eliminating the interior unrelieved stress; Through vibration; When the stack of the dynamicstress that the unrelieved stress that makes interior and vibration produce meets or exceeds material yield intensity; The viscous deformation of trace takes place in material, thereby makes the internal stress of material be able to relax and alleviate.Compare with thermal life, oscillating aging has less investment, instant effect, working cost is low and help advantages such as environmental protection.Therefore, this new and high technology of oscillating aging is with a wide range of applications.
But; Existing vibration ageing device to axial workpiece much can not make workpiece produce effective flexural deformation; Do not reach " Wozney& Crawmer " criterion of " unrelieved stress of interior meets or exceeds material yield intensity with the stack of the dynamicstress that vibration produces "; As: the disclosed a kind of frequency spectrum harmonic vibration ageing treatment of one Chinese patent application CN 102010972 prospectus is eliminated the method for bent axle internal stress, and its treatment unit is that axial workpiece is fixedly connected on the bracing frame, and the bracing frame clamping is on the shaking table that steel plate is made; Vibrator is placed on the shaking table; When oscillating aging is handled, make the shaking table vibration, axial workpiece is carried out ageing treatment through vibrator.This method makes axial workpiece do the vibration of rigid body property with shaking table, is difficult to the primary resonance that the excitation axial workpiece produces the crooked vibration shape, also just is difficult to produce required flexural deformation of oscillating aging and corresponding dynamicstress.Therefore this device is to be difficult to subdue the axial workpiece unrelieved stress, the desired result of realization oscillating aging.And for example: the stress fast adjustment method of the disclosed a kind of metallurgical roller of one Chinese patent application CN 03115266.X prospectus, its treatment unit are that roll is placed on the resiliency supported, and vibrator is put in the roll middle part and encourages.When this kind method is carried out the oscillating aging processing; Because roll is high rigidity part; The natural frequency of its flexural vibration generally all is higher than the excited frequency of existing vibrator; Therefore, this device also is to be difficult to encourage roll to produce the primary resonance of the crooked vibration shape, also is difficult to produce required flexural deformation of oscillating aging and corresponding dynamicstress.This method is connected roll through resiliency supported with base, because the rigidity of resiliency supported is little, so the system of roll and resiliency supported composition can produce primary resonance under the vibrator effect, can realize subduing unrelieved stress so this patented claim person can take for.But in fact; Because the flexural vibration natural frequency of roll is far above the excited frequency of vibrator; The vibration of system is that resiliency supported produces distortion; And roll is done rigid motion with system as a whole, can not produce needed flexural deformation, can not produce enough big dynamicstress and go to eliminate unrelieved stress.Owing to there is resiliency supported, the system frequency that causes roll and resiliency supported to be formed is starkly lower than the natural frequency of roll self flexural vibration.So no matter it handles medium and low frequency or high frequency, carries out exciting according to the natural frequency of this system, in fact its excited frequency is lower than the flexural vibration natural frequency of roll itself, makes roll can't obtain enough dynamicstress, goes to eliminate its inner unrelieved stress.
In a word, the weak effect of the vibration ageing device of existing axial workpiece is difficult to realize subduing the desired result of unrelieved stress.This is a major reason of the application of restriction vibration aging technology on axial workpiece.
Summary of the invention
The purpose of the utility model provides a kind of medium and low frequency axial workpiece vibration ageing device and method of use thereof; It can make axial workpiece produce the primary resonance of the crooked vibration shape; The flexural vibration dynamicstress that produces and the stack of unrelieved stress can be greater than the yield strengths of material, thus the unrelieved stress of subduing axial workpiece effectively.
The utility model achieves the above object through following technical scheme: a kind of medium and low frequency axial workpiece vibration ageing device; By vibrator, be used to press from both sides the folder bracer of support workpiece and the supporting mechanism that is connected with this folder bracer; Said supporting mechanism is by the left bracing frame of pair of opposing, right bracing frame and supporting seat that this left side bracing frame and right bracing frame are installed; Said folder bracer is rotating the connection with the left bracing frame of supporting mechanism with right bracing frame; Left side bracing frame becomes to be rigidly connected with base for supporting with right bracing frame, and this axial workpiece vibration ageing device also is provided with a vibrator base that said vibrator is installed, and said vibrator base is clamped in the workpiece middle part; During oscillating aging, vibrator and vibrator base and workpiece vibrate together.
Said vibrator base is made up of last bottom and lower shoe, and vibrator is installed in the middle part of bottom, connects through bolt between last bottom and the lower bottom base, and last bottom and lower bottom base two ends are circular-arc, can be fixed on the axial workpiece after being connected.
Said stimulator base has left end cap and the right end cap that the fork bar that is the circular arc prong reaches and the prong at fork bar two ends matches by two ends to be formed, and after this left end cap and right end cap cooperated installation, the vibrator base was fixed on the axial workpiece.
Said base for supporting and left bracing frame corresponding position have chute, and this left side bracing frame can move in chute, regulates the distance of left bracing frame and right bracing frame.
The left bracing frame and the right bracing frame of said folder bracer and supporting mechanism are connected through the hinge.
The folder support face of the fixture block of folder support workpiece is circular arc or V-arrangement in the said folder bracer.
The method of use of described a kind of medium and low frequency axial workpiece vibration ageing device comprises the steps:
(1) select the axial workpiece of flexural vibration natural frequency less than 200Hz,
(2) axial workpiece is placed on the folder bracer of supporting mechanism,
The vibrator base pinch that (3) vibrator will be installed supports at the middle part of axial workpiece,
(4) excitation frequency of adjustment vibrator makes it to encourage with the identical frequency of axial workpiece natural frequency size, makes it produce the primary resonance of flexural vibration mode.
During oscillating aging; Vibrator and vibrator base and workpiece vibrate in the lump; Through the vibrator base being clamped in the workpiece middle part; The exciting force that the vibrator excitation time is produced directly acts on the middle part of axle with the frequency of the flexural vibration natural frequency of axle, makes axial workpiece produce curved major resonance, and the flexural vibration dynamicstress of its generation and the stack of unrelieved stress can be greater than the yield strengths of material; Meet " the Wozney & Crawmer " criterion of subduing unrelieved stress, can effectively solve the difficult problem that the difficult realization of existing vibration ageing device shaft-like workpiece produces effective flexural resonance and subdues the desired dynamicstress of unrelieved stress.
Alleged medium and low frequency axial workpiece is meant that its flexural vibration natural frequency is lower than the axial workpiece of 200Hz in the utility model.
The outstanding effect of the utility model is:
Because the vibrator base that vibrator is installed is installed in the middle part of workpiece, carries out exciting with the flexural vibration natural frequency of axial workpiece.Left in addition bracing frame with have bracing frame to offer the axial workpiece rigid support; Make axial workpiece can produce the flexural vibration principal mode of simple beam supporting form; So can let axial workpiece produce the primary resonance distortion and the dynamicstress of flexural vibration; The flexural vibration dynamicstress that produces and the stack of unrelieved stress can be greater than the yield strengths of material, thus the unrelieved stress of subduing axial workpiece effectively.Solving existing vibration ageing device is difficult to make workpiece to produce effectively action distortion; Can't reach the difficult problem of " the Wozney & Crawmer " criterion of " unrelieved stress of interior meets or exceeds material yield intensity with the stack of the dynamicstress that vibration produces "; And because the folder bracer is rotating the connection with the left bracing frame of supporting mechanism with right bracing frame; The crankshaft two end deflection also can be protected; Make the dynamicstress distribution of two axles also more even simultaneously, thereby guarantee to subdue effectively the unrelieved stress of axial workpiece than traditional mode of vibration.
Description of drawings
Fig. 1 is embodiment one structural representation of the vibration ageing device of the described axial workpiece of the utility model.
Fig. 2 is Figure 1A place structure for amplifying synoptic diagram.
Fig. 3 is embodiment two structural representations of the vibration ageing device of the described axial workpiece of the utility model.
Fig. 4 is the user mode figure that the vibration ageing device of the described axial workpiece of the utility model is used to handle engine crankshaft.
Fig. 5 produces the realistic model of distortion under the vibrator effect when being the clamping bent axle of oscillating aging mechanism of the described axial workpiece of the utility model.
Fig. 6 is existing flat crankshaft vibration ageing device (like the disclosed device of one Chinese patent application CN 102010972 prospectus) produces distortion under the vibrator effect a realistic model.
Embodiment
Below through accompanying drawing and embodiment the technical scheme of the utility model is described further.
Embodiment 1
As shown in Figure 1, the vibration ageing device of the described axial workpiece of the utility model is made up of vibrator 5, stimulator base, folder bracer 3 and supporting mechanism.
The bottom of vibrator 5 is provided with web plate 52, has two connecting holes 51 on the web plate 52, and the stimulator base comprises bottom 13 and lower shoe 14; Connecting hole 51 corresponding positions of the middle part of last bottom 13 and web plate 52 have two screws, and the connecting hole 51 that bolt 7 is passed on the web plate 52 is screwed in the screw of bottom, can vibrator 5 be fixed on bottom 13 mid-ways; The two ends of last bottom 13 is circular-arc recess 12, and the edge of recess 12 is provided with the flat board 15 of protrusion, has through hole on the flat board 15; Lower shoe 14 structures and last bottom 13 shapes are similar, and last bottom 13 will be gone up bottom 13 with lower shoe 14 through bolt 7 and lump together with lower shoe 14, after the recess 12 of last bottom 13 matches with the recess of lower shoe 14; Form circular folder mouth, be clipped in axial workpiece 4 middle parts, at this moment; Vibrator 5 is positioned at the centre of two axial workpieces 4, and during oscillating aging, vibrator 5 drives vibrator base 6 vibration in the lump; Obviously, the position of this vibrator base 6 can axially moved, through unclamping bolt 7; Can will go up bottom 13 and open in 14 minutes,, just can place on the axial workpiece going up bottom 13 as long as the formation marmon clamp mouth size after the recess of the recess 12 of the diameter of the axial workpiece diameter of axle 4 and last bottom 13 and lower shoe 14 matches adapts with lower shoe; To go up bottom 13 through bolt 7 again links together with lower shoe 14; Adjusted the position of vibrator base 6 on axial workpiece 4 very simply, promptly also changed simultaneously the energized position of 5 pairs of axial workpieces 4 of vibrator, the flexural vibration that just can make axial workpiece 4 produce the different vibration shapes; Change the distribution of flexural vibration stress, reach the unrelieved stress of subduing the axial workpiece different sites.
Combine Fig. 2 to find out again, an end of folder bracer 3 has circular arc clevis support mouth 32, is used for folder support axial workpiece; Certainly the shape of this folder support mouth also can be other suitable shapes such as V-arrangement; Contact preferably with axle head with realization, power is better transmitted over, folder support face also can be made shapes such as V-type.Folder support face should press from both sides the both ends of the surface that support axial workpiece, increases the distance between simple beam two point of suppon, with the flexural vibration natural frequency reduction of system; Make effect of vibration stress relief better, this folder bracer the other end is cylindrical 31, and axially has the pin-and-hole of perforation along it; Supporting mechanism comprises left bracing frame 1, right bracing frame 8, joint pin 2, base for supporting 10 and screw 11, and the both sides of left bracing frame 1 and right bracing frame 8 are provided with the pin ear of protrusion, has and joint pin 2 and the corresponding through hole of pin-and-hole on the pin ear of both sides; Through joint pin 2 insertion both sides being sold the through hole on the ear and pressing from both sides the pin-and-hole on the bracer; Be about to press from both sides that bracer 3 is rotatably connected is fixed on left bracing frame 1 and the right bracing frame 8, obviously, above-mentioned mode of connection belongs to hinge and connects; Certainly; The folder bracer is not limited to hinge with left bracing frame 1 with right bracing frame 8 mode of connection and is connected, and can also adopt other mode that is rotationally connected, like snap-in connection.Base for supporting 10 is provided with chute in left bracing frame 1 bottom, and the side of chute has a long strip shape position-arresting groove 9, and the bottom of left bracing frame 1 is contained on the chute; Can on chute, move, the sidewall of left bracing frame 1 and position-arresting groove 9 corresponding places have threaded hole, and this threaded hole and screw 11 match; Screw 11 passes position-arresting groove 9 and is contained on the left support 1; Through screw 11 can be fastening with loosen left support 1, when screw 11 loosens, a left side support 1 can be in chute move left and right.Right bracing frame 8 is through forming a fixed connection between welding or bolt and ground or the supporting seat.Move a left side and support 1, regulate the distance between left bracing frame 1 and the right bracing frame 8,, improve the versatility of device with the demand of the axial workpiece 4 that satisfies different lengths.
Fig. 5 is the simulation analysis figure that the utility model is used to handle generator crankshaft vibration timeliness; Through the ANSYS simulation software it is carried out simulation calculation; Fig. 5 and Fig. 6 are the results that its emulation obtains, and can find out from simulation result, adopt the oscillating aging mechanism of the described axial workpiece of the utility model; Distortion during bent axle middle part oscillating aging rises to 0.64mm from the 0.07mm of existing vibration ageing device; The maximum distortion scope has very big increase, and the crankshaft two end deflection also has significantly raising, and two axle dynamicstress distribute also more even than traditional mode of vibration simultaneously.
Embodiment 2
As shown in Figure 3, the concrete structure of another embodiment of the utility model, this embodiment are different from the bottom of the main vibrator of embodiment 1 part 6; Comprise fork bar 16, left end cap 15, right end cap 17, fork bar 16 two ends have the prong 18 (seeing that from figure 18 lead-in wire position should move in the prong) of circular arc; Radially there is the extension 19 of outside protrusion at prong 18 two ends, have through hole on the extension board 19, left end cap 15 and right end cap 17 be circular arc; The circular arc that its opening also matches with prong 18, the two ends of left end cap 15 and right end cap 17 also are provided with the extension board 19 that outside protrusion is radially arranged, and have through hole on the extension board 19; Through bolt left end cap 15 and right end cap 17 are fixed on the fork bar 16, fork bar 16 just can be fixed on the axial workpiece 4, during installation; The circular arc prong 18 at the two ends of pitching bar 16 is clamped respectively on the diameter of axle of axial workpiece 4; Through bolt left end cap 15 and right end cap 17 are fixed on the fork bar 16 then, have promptly accomplished the installation of vibrator base 6, certainly; The position of this vibrator base 6 also can axially moved, and can change the energized position of 5 pairs of axial workpieces 4 of vibrator.
When the utility model carries out oscillating aging to axial workpiece; Earlier axial workpiece is placed on the back-up block of supporting mechanism; And then the folder that the vibrator base of vibrator will be installed supports the middle part at axial workpiece; At last, the excitation frequency of adjustment vibrator makes it to encourage with the identical frequency of axial workpiece natural frequency size.
Claims (6)
1. medium and low frequency axial workpiece vibration ageing device; It is characterized in that; This device by vibrator, be used to press from both sides the folder bracer of support workpiece and the supporting mechanism that is connected with this folder bracer; Said supporting mechanism is by the left bracing frame of pair of opposing, right bracing frame and supporting seat that this left side bracing frame and right bracing frame are installed, and said folder bracer is rotating the connection with the left bracing frame of supporting mechanism with right bracing frame, and left bracing frame becomes to be rigidly connected with base for supporting with right bracing frame; This axial workpiece vibration ageing device also is provided with a vibrator base that said vibrator is installed; Said vibrator base is clamped in the workpiece middle part, and during oscillating aging, vibrator and vibrator base and workpiece vibrate together.
2. a kind of medium and low frequency axial workpiece vibration ageing device according to claim 1; It is characterized in that; Said vibrator base is made up of last bottom and lower shoe, and vibrator is installed in the middle part of bottom, connects through bolt between last bottom and the lower bottom base; Last bottom and lower bottom base two ends are circular-arc, can be fixed on the axial workpiece after being connected.
3. a kind of medium and low frequency axial workpiece vibration ageing device according to claim 1; It is characterized in that; Said stimulator base has left end cap and the right end cap that the fork bar that is the circular arc prong reaches and the prong at fork bar two ends matches by two ends and forms; After this left end cap and right end cap cooperated installation, the vibrator base was fixed on the axial workpiece.
4. a kind of medium and low frequency axial workpiece vibration ageing device according to claim 1 is characterized in that said base for supporting and left bracing frame corresponding position have chute, and this left side bracing frame can move in chute, regulates the distance of left bracing frame and right bracing frame.
5. a kind of medium and low frequency axial workpiece vibration ageing device according to claim 1 is characterized in that the left bracing frame and the right bracing frame of said folder bracer and supporting mechanism are connected through the hinge.
6. a kind of medium and low frequency axial workpiece vibration ageing device according to claim 1 is characterized in that, the folder support face of the fixture block of folder support workpiece is circular arc or V-arrangement in the said folder bracer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203715756U CN202246777U (en) | 2011-10-08 | 2011-10-08 | Vibratory stress relief device for low and medium frequency shaft parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203715756U CN202246777U (en) | 2011-10-08 | 2011-10-08 | Vibratory stress relief device for low and medium frequency shaft parts |
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| Publication Number | Publication Date |
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| CN202246777U true CN202246777U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203715756U Withdrawn - After Issue CN202246777U (en) | 2011-10-08 | 2011-10-08 | Vibratory stress relief device for low and medium frequency shaft parts |
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| CN (1) | CN202246777U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321793A (en) * | 2011-10-08 | 2012-01-18 | 广西大学 | Vibratory stress relief apparatus for medium frequency and low frequency shaft type parts, and use method thereof |
| CN102719649A (en) * | 2012-06-28 | 2012-10-10 | 南宁市神华振动时效技术研究所 | Vibration ageing device for movable loader arms |
| CN102978374A (en) * | 2012-12-14 | 2013-03-20 | 南宁市神华振动时效技术研究所 | Vibratory stress relief device for autoclave body |
| CN107739813A (en) * | 2017-09-28 | 2018-02-27 | 上海无线电设备研究所 | A kind of device and method for being used to eliminate structural member residual stress |
| CN111733318A (en) * | 2020-07-24 | 2020-10-02 | 山东科技大学 | Novel device for eliminating residual stress in small parts |
| CN113927517A (en) * | 2021-10-29 | 2022-01-14 | 广东电网有限责任公司广州供电局 | Assembly tool for rotating shaft and crank arm of isolating switch |
-
2011
- 2011-10-08 CN CN2011203715756U patent/CN202246777U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321793A (en) * | 2011-10-08 | 2012-01-18 | 广西大学 | Vibratory stress relief apparatus for medium frequency and low frequency shaft type parts, and use method thereof |
| CN102321793B (en) * | 2011-10-08 | 2013-05-08 | 广西大学 | Vibratory stress relief apparatus for medium frequency and low frequency shaft type parts, and use method thereof |
| CN102719649A (en) * | 2012-06-28 | 2012-10-10 | 南宁市神华振动时效技术研究所 | Vibration ageing device for movable loader arms |
| CN102719649B (en) * | 2012-06-28 | 2014-02-05 | 南宁市神华振动时效技术研究所 | Vibration ageing device for movable loader arms |
| CN102978374A (en) * | 2012-12-14 | 2013-03-20 | 南宁市神华振动时效技术研究所 | Vibratory stress relief device for autoclave body |
| CN102978374B (en) * | 2012-12-14 | 2015-06-03 | 南宁市神华振动时效技术研究所 | Vibratory stress relief device for autoclave body |
| CN107739813A (en) * | 2017-09-28 | 2018-02-27 | 上海无线电设备研究所 | A kind of device and method for being used to eliminate structural member residual stress |
| CN111733318A (en) * | 2020-07-24 | 2020-10-02 | 山东科技大学 | Novel device for eliminating residual stress in small parts |
| CN111733318B (en) * | 2020-07-24 | 2021-09-28 | 山东科技大学 | Novel device for eliminating residual stress in small parts |
| CN113927517A (en) * | 2021-10-29 | 2022-01-14 | 广东电网有限责任公司广州供电局 | Assembly tool for rotating shaft and crank arm of isolating switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120530 Effective date of abandoning: 20130508 |
|
| RGAV | Abandon patent right to avoid regrant |