CN1105706A - Method and equipment for a.c. motor driving oscillating aging treating parts - Google Patents
Method and equipment for a.c. motor driving oscillating aging treating parts Download PDFInfo
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- CN1105706A CN1105706A CN94110420A CN94110420A CN1105706A CN 1105706 A CN1105706 A CN 1105706A CN 94110420 A CN94110420 A CN 94110420A CN 94110420 A CN94110420 A CN 94110420A CN 1105706 A CN1105706 A CN 1105706A
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- microcomputer
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- current motor
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Abstract
The present invention discloses a A.C. motor driving type vibration ageing treatment method of parts and its equipment. It is mainly characterized by that it uses microcomputer 1 to process its vibration ageing command, and the produced electric signal is used to directly control its alternating-current converter 2, and the working frequency voltage is converted by alternating-current converter 2, and then is delivered to A.C. motor 3, and then the detection signal of rotating speed of A.C. motor 3 is fed back to microcomputer 1 by using speed-measuring device 5, and under the condition of speed closed-loop control, the A.C. motor 3 drives an eccentric device 4 to make it implement synchronous revolution to implement the vibration ageing treatment of parts. Besides it has a residual stress testing devcie 9 capable of continuously testing residual stress of part 7.
Description
The present invention relates to a kind of oscillating aging treatment technology of metal parts, specifically, it relates to a kind of method and apparatus of alternating current motor driving oscillating aging treating parts.
The principle of oscillating aging treating parts is that processed part is flexibly supported, vibrator is clamped on the processed part, the excited frequency of control vibrator applies one and the corresponding to repeated load of part natural frequency to part, make part produce resonance, reach the purpose of elimination and homogenizing part internal residual stress.
The method of existing oscillating aging treating parts, generally be to regulate the voltage that silicon controlled rectifier is exported to direct-current motor by the microcomputer control start pulse signal, realize the variable voltage control and the voltage stabilizing stable speed function of direct-current motor, and then realize the oscillating aging processing by the eccentric of direct-current motor driving vibrator.This oscillating aging treatment facility, because the required armature current of its direct-current motor is imported by reverser, so when electric motor runs up, loose contact, heating and spark will appear between carbon brush and the commutator segment, and then cause reverser by scaling loss, make the received current instability, the motor speed shakiness is restive.Therefore, this equipment failure rate height, work-ing life is short; The rotating speed of electric motor can not be too high, is difficult to satisfy the requirement of oscillating aging technology; And because this equipment all is divided into large, medium and small three types by power, the scope of application separately is narrow, and versatility is poor.Moreover, existing oscillating aging treatment facility can not directly record the actual elimination situation of part unrelieved stress, often can't know actual reduction degree and definite time of vibration accurately of the changing conditions and the processing back unrelieved stress of part unrelieved stress in the oscillating aging treating processes.
The objective of the invention is to propose a kind of method and apparatus of alternating current motor driving oscillating ageing treatment, overcome the direct-current motor driving oscillating aging treating parts method and apparatus had: the electric motor maximum speed is restricted, electric motor easily generates heat, steady speed precision is poor during high speed, equipment interoperability is low, and owing to can not directly record the actual elimination situation of part unrelieved stress, and can't definitely grasp many defectives such as time that oscillating aging handles and effect.
The objective of the invention is to realize by following method and apparatus.
A kind of method of alternating current motor driving oscillating aging treating parts adopts microcomputer control, with the motor drive eccentric part is carried out oscillating aging and handles.Its principal character is embodied in: microcomputer instructs to oscillating aging and handles, and the electrical signal that produces is directly controlled AC converter.AC converter carries out exporting to alternating current motor after the frequency conversion to power-frequency voltage.Speed measuring device will feed back to microcomputer to the detection signal of alternating current motor rotating speed.Under speed closed loop control, alternating current motor drives eccentric and rotates synchronously, realizes the oscillating aging of part is handled.Then, the unrelieved stress of unrelieved stress test set continuously tested part, microcomputer changes situation about stopping according to part residual-stress value under a certain harmonic wave, regulate eccentric to adjacent harmonic frequency, vibrational excitation demonstrates the final elimination factor of part unrelieved stress simultaneously till unrelieved stress no longer changes one by one.In addition, the vibration treatment time of aforesaid method is to determine according to the changing conditions of part unrelieved stress.
The equipment of realizing aforesaid method comprises microcomputer, electric motor, speed measuring device, eccentric and vibro-pickup, its principal feature is: also have the unrelieved stress test set, microcomputer links to each other with alternating current motor by AC converter, and alternating current motor links to each other with eccentric.Speed measuring device on the alternating current motor, unrelieved stress speed measuring device and vibro-pickup are connected with microcomputer respectively.
The microcomputer of aforesaid device is stored K1, K2, three kinds of software programs of K3, corresponds respectively to three kinds of working ranges of 0～30%, 30%～70%, 70%～100% o'clock of eccentric maximum eccentric value, utilizes transmodulator conversion.In addition, its alternating current motor and eccentric should be that the requirement by high-power type oscillating aging equipment manufactures and designs, and its motor power (output) is not less than 1KW at least, and the maximum exciting force that eccentric produces is not less than 10KN at least.
Below in conjunction with accompanying drawing the present invention is done further commentary.
Figure one is a functional block diagram of the present invention.
Microcomputer 1 produces voltage (or electric current) signal corresponding to alternating current motor 3 a certain rotating speeds according to the oscillating aging steering order of input, and AC converter (or vector AC converter) 2 of control VVVF type carries out frequency conversion with the power-frequency voltage of 50Hz or 60Hz.Voltage after the frequency conversion gives phase asynchronous interconnected cage motor (or single-phase squirrel-cage or wire wound asynchronous motor) 3 power supplies.Electric motor 3 produces certain certain rotating speed under the control of this voltage to frequency, its actual speed detects by the speed measuring device on the electric motor 35, detected speed signal is fed back to microcomputer 1, realize the speed closed loop control of 1 pair of electric motor 3 of microcomputer, thereby keep high rotational speed stability.Electric motor 3 drives eccentric 4 runnings, applies a repeated load that meets the vibration instruction for the part of being handled by oscillating aging 7.The vibrational state of workpiece 7 is by the detection of the vibro-pickup 8 above it, and its detection signal send microcomputer 1 processing and carries out data presentation.
The unrelieved stress of unrelieved stress test set 9 continuously tested parts 7 in the vibration treatment process, microcomputer 1 is regulated eccentric 4 to adjacent harmonic frequency according to the situation that stops that residual-stress value under each harmonic wave changes, and carries out vibrational excitation one by one till unrelieved stress no longer changes repeatedly.And the residual-stress value before and after the part vibration treatment that 1 pair of unrelieved stress test set 9 of microcomputer measures compares, and shows the final elimination factor of its unrelieved stress.
Storing in the microcomputer 1 has K1, K2, three kinds of software programs of K3, corresponds respectively to three kinds of working ranges of 0～30%, 30%～70%, 70%～100% o'clock of eccentric 4 maximum eccentric values, utilizes transmodulator conversion.Like this, use the repertoire that to realize existing large, medium and small three types oscillating aging equipment once cover equipment of the present invention.
The alternating current motor 3 of equipment of the present invention and eccentric 4 should be that the oscillating aging equipment requirements by high-power type manufactures and designs, and the power of its alternating current motor 3 is not less than 1KW at least, and the maximum exciting force that eccentric 4 produces is not less than 10KN at least.
The existing speed stabilizing of method and apparatus that the invention solves existing oscillating aging treating parts is low, failure rate is high, narrow application range, time of vibration and unrelieved stress elimination factor are determined inaccurate problem, is a kind of ideal method and apparatus of present oscillating aging treating parts aspect.
Claims (5)
1, a kind of method of alternating current motor driving oscillating aging treating parts adopts microcomputer control, with the motor drive eccentric part is carried out oscillating aging and handles, and it is characterized in that:
(1) microcomputer is handled the oscillating aging processing instruction, and the electrical signal that produces is directly controlled AC converter; AC converter carries out exporting to alternating current motor after the frequency conversion to power-frequency voltage; Speed measuring device will feed back to microcomputer to the detection signal of alternating current motor rotating speed; Under speed closed loop control, alternating current motor drives eccentric and rotates synchronously, realizes the oscillating aging of part is handled;
(2) unrelieved stress of unrelieved stress test set continuously tested part, microcomputer changes situation about stopping according to part residual-stress value under some harmonic waves, regulate eccentric to adjacent harmonic frequency, vibrational excitation demonstrates the final elimination factor of part unrelieved stress simultaneously till unrelieved stress no longer changes one by one.
2, in accordance with the method for claim 1, it is characterized in that the oscillating aging treatment time is to determine according to the changing conditions of part unrelieved stress.
3, a kind of equipment of realizing the method for claim 1 or 2, comprise microcomputer (1), electric motor (3), speed measuring device (5), eccentric (4) and vibro-pickup (8), it is characterized in that, also has unrelieved stress test set (9), microcomputer (1) links to each other with alternating current motor (3) by AC converter (2), alternating current motor (3) links to each other with eccentric (4), and the speed measuring device (5) on the alternating current motor (3), unrelieved stress test set (9) and vibro-pickup (8) are connected with microcomputer (1) respectively.
4, according to the described equipment of claim 3, it is characterized in that, storing in the microcomputer (1) has K1, K2, three kinds of software programs of K3, corresponds respectively to three kinds of working ranges of 0～30%, 30%～70%, 70%～100% o'clock of eccentric (4) maximum eccentric value, utilizes transmodulator conversion.
5, according to claim 3 or 4 described equipment, it is characterized in that, alternating current motor (3) and eccentric (4) should be that the requirement by high-power type oscillating aging equipment manufactures and designs, its motor power (output) is not less than 1KW at least, and the maximum exciting force that eccentric (4) produces is not less than 10KN at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94110420A CN1105706A (en) | 1994-01-18 | 1994-01-18 | Method and equipment for a.c. motor driving oscillating aging treating parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94110420A CN1105706A (en) | 1994-01-18 | 1994-01-18 | Method and equipment for a.c. motor driving oscillating aging treating parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1105706A true CN1105706A (en) | 1995-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94110420A Pending CN1105706A (en) | 1994-01-18 | 1994-01-18 | Method and equipment for a.c. motor driving oscillating aging treating parts |
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| CN (1) | CN1105706A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497159A (en) * | 2011-12-23 | 2012-06-13 | 山东华云机电科技有限公司 | Alternating current frequency conversion control method suitable for vibrating stress relief |
| CN104655179A (en) * | 2013-11-21 | 2015-05-27 | 珠海格力电器股份有限公司 | Stress-strain testing method, device and system |
| CN104682825A (en) * | 2015-03-24 | 2015-06-03 | 安徽理工大学 | Comprehensive speed regulating control method of asynchronous motor |
| CN104962726A (en) * | 2015-07-27 | 2015-10-07 | 江苏捷帝机器人股份有限公司 | Vibratory aging device |
-
1994
- 1994-01-18 CN CN94110420A patent/CN1105706A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497159A (en) * | 2011-12-23 | 2012-06-13 | 山东华云机电科技有限公司 | Alternating current frequency conversion control method suitable for vibrating stress relief |
| CN104655179A (en) * | 2013-11-21 | 2015-05-27 | 珠海格力电器股份有限公司 | Stress-strain testing method, device and system |
| CN104655179B (en) * | 2013-11-21 | 2017-11-14 | 珠海格力电器股份有限公司 | stress-strain testing method, device and system |
| CN104682825A (en) * | 2015-03-24 | 2015-06-03 | 安徽理工大学 | Comprehensive speed regulating control method of asynchronous motor |
| CN104962726A (en) * | 2015-07-27 | 2015-10-07 | 江苏捷帝机器人股份有限公司 | Vibratory aging device |
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