CN1584532A

CN1584532A - Parameter detecting method for vibrating-eliminated strain and vibrating welding process and use thereof

Info

Publication number: CN1584532A
Application number: CN 200410023259
Authority: CN
Inventors: 林易人
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-25
Filing date: 2004-05-25
Publication date: 2005-02-23
Anticipated expiration: 2024-05-25
Also published as: CN1317545C

Abstract

A method for detecting parameter in course of vibration welding and stress eliminating with vibration includes using transducer to detect parameter contained with vibrating acceleration, vibrating amplitude and dynamic stress from three directions or detect composite parameter from three directions. It the method the parameter can be either vector or nonvector.

Description

Parameter detection method and application thereof in vibratory stress reliefing and the Vibration Welding process

Technical field

The present invention relates to a kind of parameter detection method in vibratory stress reliefing and Vibration Welding process, belong to machining process.

Background technology

Vibratory stress reliefing (Vibration Stress Relief) is called oscillating aging again, be applied to ferrous metal and the non-ferrous metal mechanical structured member unrelieved stress after casting, forging and pressing, welding and cut and eliminate or homogenizing (homogenize), prevent distortion or cracking.Vibratory stress reliefing need detect the parameter of vibration, it is the dynamic stress that vibration acceleration or Oscillation Amplitude or vibration produce, by analyzing and judge the process of control vibratory stress reliefing to detecting the parameter that obtains, the determination methods of its effect is carried out according to machinery industry standard JB/T5926 of the People's Republic of China (PRC) and JB/T10375.

Vibration Welding is called the welding modulation again, the welding process that is applied to ferrous metal and non-ferrous metal mechanical structured member is auxiliary, its effect is generation and the refinement Welding Fractography crystal grain that reduces welding stress, can exempt the welding preheating of alloy junction member or lower preheat temperature, improve welding quality and prevent cracking, distortion.Vibration Welding need detect the parameter of vibration, i.e. the dynamic stress that vibration acceleration or Oscillation Amplitude or vibration produces is by controlling the process of Vibration Welding to detecting the parameter that obtains.

The parameter detecting of known vibratory stress reliefing and Vibration Welding is an one dimension, promptly on single direction, detect, obtain the one dimension parameter by acceleration transducer, vibration amplitude sensor and dynamic stress sensor, the technological process of control vibratory stress reliefing and Vibration Welding.This method has the following disadvantages: the one dimension parameter detecting has very strong directivity, if direction of vibration and detection side are to inconsistent, the intensity that just can not truly reflect vibration, might cause fatigue damage even defective work piece to workpiece in the process of vibratory stress reliefing, the vibration variable quantity accuracy that unidirectional parameter reflected simultaneously influences crudy inadequately and directly; The vibratory output that then might make loading in the process of Vibration Welding is excessive and welding quality is impacted.Replace design simultaneously makes new advances, control procedure accurately so be necessary to invent a kind of new detection method.

Summary of the invention

The object of the present invention is to provide a kind of vibratory stress reliefing and Vibration Welding detection method of three-dimensional, and create a kind of new vibratory stress reliefing and the control procedure of Vibration Welding.

Technical scheme of the present invention realizes by following approach, it is the synthetic parameters that utilizes parameter or three directions of three directions of sensor, parameter involving vibrations acceleration, vibration amplitude and dynamic stress, wherein said parameter can be vectors, also can be non-vectors.

The present invention so can reflect the situation of change of all vibration parameters comprehensively, effectively controls the process of vibratory stress reliefing and Vibration Welding owing to adopt the parameter of three directions of three-dimension sensor observation, workpiece is not caused damage when guaranteeing crudy.

Description of drawings

Fig. 1 is the concrete enforcement synoptic diagram that adopts three-dimension sensor;

Fig. 2 is the concrete enforcement synoptic diagram that adopts three one dimension sensors;

Fig. 3 adopts a dimension sensor and an one dimension sensor specifically to implement synoptic diagram;

Fig. 4 is the vibration parameters and the resultant vector synoptic diagram thereof of sensor;

Fig. 5 is

vibration parameters

6,7,8 and its resultant vibration parameter 12 angle synoptic diagram that detect;

Fig. 6 is 6 and 7 synthetic parameters 9,7 and 8 synthetic parameters 10,6 and 8 synthetic parameters 11 and the signal of resultant vibration parameter angle;

Fig. 7 is the variation signal of resultant vibration parameter 12 in the vibratory stress reliefing process;

Fig. 8 is that resultant vibration parameter 12 is illustrated with the variation of angle 17 in the vibratory stress reliefing process of two dimensional surface.

Embodiment

Below in conjunction with accompanying drawing and with the three-dimension sensor is that example is described the specific embodiment of the present invention in detail.

As shown in Figure 1, detected workpiece 1 is supported on the ground by elastic component 5, vibrational excitation drives vibration source 4 by controller 3 and produces, three-dimensional vibrating detecting sensor 2 places on the workpiece 1 and with controller 3 and links to each other, sensor 2 can detect 6,7, vibration parameters (the vibration acceleration of 8 three directions, vibration amplitude or dynamic stress) or 6,7,8 synthetic

quantity vibration parameters

12,12 acquisition also can be by 6,7,8 calculate acquisition, computable resultant vibration parameter comprises 9 simultaneously, 10,11 and

angle

13,14,15,16,17,18, all parameters can be vector or non-vector (as Fig. 4,5, shown in 6).It is more accurate that the three-dimensional vibration parameters that detects obviously detects than one dimension, make the control procedure of vibratory stress reliefing and Vibration Welding more accurate with control procedure more comprehensively, created superior detection of a kind of technical feature and control method.

As shown in Figure 4, it is that folk prescription is to one dimension that existing technology vibration parameters detects, the vibration parameters of one dimension is one that detects in 6,7,8, the vibratory output that so just can not reflect actual maximum really, actual vibration amount maximum possible is the several times of detection limit even tens times, causes the damage of workpiece easily or reduces fatigue lifetime; The detection of one dimension vibration parameters also may be a durection component, the actual change that can not reflect vibration parameters under a lot of situations, therefore just can not make the processing of vibratory stress reliefing and Vibration Welding reach optimum efficiency, even can't judge exactly and the CONTROL PROCESS process.

Again as shown in Figure 4, sensor of the present invention can detect 6,7,8 three directions (three-dimensional) simultaneously or directly detect synthetic parameters 12, its parameter 12 also can obtain by calculating by 6,7,8, can calculate vector (non-vector)

angle

13,14,15,16,17,18 that also has two-dimensional parameter 9,10,11 and Fig. 5, Fig. 6 of acquisition simultaneously.The detection of three-

dimensional vibrating parameter

6,7,8 can accurately reflect the maximum vibration amount that its synthetic parameters 12 is represented, one of the angle of cooperation 12 and two dimensional surface (16,17,18), the situation of change that can comprehensively reflect all vibration parameters, effectively the process of control vibratory stress reliefing and Vibration Welding does not cause damage to workpiece when guaranteeing crudy.

In the process control of vibratory stress reliefing, constantly detect the variation of 6,7,8 parameters or its synthetic parameters 12 and two dimensional surface angle one of (16,17,18), make it meet the requirement that effect is judged in JB/T5926 and the JB/T10375 standard, more comprehensive and accurate than simple detection one dimension parameter, therefore can obtain best processing effect.For example, Fig. 7 synthetic parameters 12 rises in process (or descend or rises earlier afterwards descends), and variation stops after be that one of judgement of machining control process is finished in conduct behind the time t1; Fig. 8 is that the angle of synthetic parameters 12 and two dimensional surface changes in process, changes to stop after be as two of the judgement of finishing the machining control process behind the time t2.Two kinds of judgements can separate or carry out simultaneously.Similarly method also comprise whole or any two and the angle that use in the two-dimensional parameter 9,10,11 judge and uses detected

parameters

6,7,8 and 9,10,11,12 pairs of oscillating scanning curves of synthetic parameters thereof (contain shake before once and the secondary afterwards that shakes) judge.

In the process control of Vibration Welding, by detecting 6,7,8 parameters or its synthetic parameters 12, can accurately control the size of actual vibration amount, guarantee crudy.For example: setting the vibratory output scope is 5-10m/s ²(vibration acceleration), it is a lot of to adopt the one dimension detection method just might surpass, if three times is exactly 15-30m/s ²(almost can not process), and three-dimensional the detection is exactly the working control amount.Similarly method also comprises and uses whole in the two-dimensional parameter 9,10,11 or any two to detect.

The process control of vibratory stress reliefing and Vibration Welding comprises automatic, semi-automatic and manual, all can adopt the present invention to carry out automatically and manual control.

As shown in Figure 2, when using three one dimension sensors to detect, be simultaneously the parameter of three directions to be detected with three one dimension sensors, computation process is the same with three-dimension sensor.

As shown in Figure 3, when using a dimension sensor and an one dimension sensor to detect, be the parameter that detects both direction with a dimension sensor simultaneously, with the parameter of the 3rd direction of one dimension sensor, computation process is the same with three-dimension sensor.

Claims

1. the parameter detection method in vibratory stress reliefing and the Vibration Welding process, it is characterized in that it is the synthetic parameters that utilizes parameter or three directions of three directions of sensor, parameter involving vibrations acceleration, vibration amplitude and dynamic stress, wherein said parameter can be a vector, also can be non-vector.

2. a kind of detection method according to claim 1 is characterized in that described sensor can be one dimension, two dimension or three-dimension sensor.

3, a kind of detection method according to claim 1 is characterized in that described detection method is to be used for the vibratory stress reliefing process is controlled.

4, a kind of detection method according to claim 1 is characterized in that described detection method is to be used for the Vibration Welding process is controlled.