CN103808953A - Method for testing tracking speed of resistance point/projection welder electrode system - Google Patents
Method for testing tracking speed of resistance point/projection welder electrode system Download PDFInfo
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- CN103808953A CN103808953A CN201410069649.9A CN201410069649A CN103808953A CN 103808953 A CN103808953 A CN 103808953A CN 201410069649 A CN201410069649 A CN 201410069649A CN 103808953 A CN103808953 A CN 103808953A
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Abstract
The invention relates to a method for testing the tracking speed of a resistance point/projection welder electrode system. A testing device on the welder is used for acquiring parameters such as the electrode relative displacement and electrode force reflecting the tracking performance of the electrode system and transmitting to a computer for analyzing to obtain the tracking speed of the resistance point/projection welder electrode system finally. The method has the advantages that the problem of testing of the force variation tracking speed of the electrode system under the situation of sudden drop of the electrode force and even loss of contact of a workpiece or an electrode due to metal softening and melting in a workpiece spot welding region or sudden collapse of a salient point during projection welding after the introduction of high current during resistance point/projection welding is solved.
Description
Technical field
The present invention relates to the test of point of resistance/projection welder electrode system tracking velocity, belonged to mechanical engineering field tests.
Background technology
In point of resistance/projection welding process, when passing into high electric current, the metal heated of spot welding workpiece weld zone softened, and fusing or projection welding salient point are while caving in, cause electrode force to reduce suddenly even workpiece and lose and contact with electrode, welding quality is degenerated, maybe can not realize welding.The ability that two electrodes can be followed the tracks of rapidly workpiece deformation and again contact fast, is exactly the tracking performance of point of resistance/projection welder electrode system, generally represents by tracking velocity.The tracking performance welding quality of electrode and have material impact the serviceable life of electrode, it is to evaluate the factor that welding machine dynamic mechanical properties and numerical simulation of welding processes must be considered.Therefore the method for testing of studying a set of point of resistance/projection welder electrode system tracking velocity is necessary.
Summary of the invention
The present invention has aimed to provide the method for testing of point of resistance/projection welder electrode system tracking velocity, for the test to point of resistance/projection welder electrode system tracking performance.Technical scheme of the present invention is: a kind of method of testing of point of resistance/projection welder electrode system tracking velocity, proving installation on welding machine gathers the electrode relative displacement of reflection electrode system tracking performance and electrode force parameter be transferred in computing machine and analyzes, and finally draws the tracking velocity of point of resistance/projection welder electrode system.
Described proving installation comprises and is arranged on the power on drift (3) of electrode seat (2) of welding machine, on the welder lower electrode seat (8) of the electrode seat that powers on (2) below, cylinder barrel (6) is installed, the in-built gasket ring 5 of cylinder barrel 6, on gasket ring 5, fill a fragility pin 4, described fragility pin 4 is corresponding with drift (3), in the bottom of cylinder barrel (6), piezo crystal power sensor 7 is installed, displacement transducer (1) one end is arranged in the electrode seat that powers on (2), the other end is arranged on lower electrode holder (8), displacement transducer (1) is connected with computing machine by data collecting card, described piezo crystal power sensor (7) is connected with data collecting card (10) by charge amplifier (9).
In order to make fragility pin (4) realize brittle fracture, on fragility pin (4), offer V-shaped groove, this V-shaped groove is corresponding with described drift.
In described computing machine (11), be provided with for by electrode relative displacement and electrode force signal synchronous collection and electrode displacement signals during resistance is changed into the software systems of electrode speed signal.
Advantage of the present invention is: the method for testing of inventing has been reproduced truly in point of resistance/projection welding process, when passing into high electric current, the metal softening of workpiece Welding Area, also fusing, or salient point caves in suddenly when projection welding, operating mode while causing electrode force to reduce suddenly workpiece even or electrode losing contact, has solved the tracking velocity test problem that this power of electrode welder system keeps track changes.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention;
Fig. 2 is resistance projection-welding situation schematic diagram.
Embodiment
Further describe the present invention below in conjunction with specific embodiment, advantage and disadvantage of the present invention will be more clear along with description.But these embodiment are only exemplary, scope of the present invention are not formed to any restriction.It will be understood by those skilled in the art that lower without departing from the spirit and scope of the present invention and can the details of technical solution of the present invention and form be modified or be replaced, but these modifications and replacement all fall within the scope of protection of the present invention.
Referring to Fig. 1 to Fig. 2, the present invention relates to a kind of method of testing of point of resistance/projection welder electrode system tracking velocity, proving installation on welding machine gathers the electrode relative displacement of reflection electrode system tracking performance and electrode force parameter be transferred in computing machine and analyzes, and finally draws the tracking velocity of point of resistance/projection welder electrode system.
Described proving installation comprises and is arranged on the power on drift 3 of electrode seat 2 of welding machine, on welder lower electrode seat 8 below the electrode seat 2 that powers on, cylinder barrel 6 is installed, the in-built gasket ring 5 of cylinder barrel 6, on gasket ring 5, fill a fragility pin 4, described fragility pin 4 is corresponding with drift 3, piezo crystal power sensor 7 is installed in the bottom of cylinder barrel 6, displacement transducer 1 one end is arranged on and powers in electrode seat 2, the other end is arranged on lower electrode holder 8, displacement transducer 1 is connected with computing machine by data collecting card, described piezo crystal power sensor 7 is connected with data collecting card 10 by charge amplifier 9.
In order to make fragility pin 4 realize brittle fracture, on fragility pin 4, offer V-shaped groove, this V-shaped groove is corresponding with described drift.
In described computing machine (11), be provided with for by electrode relative displacement and electrode force signal synchronous collection and electrode displacement signals during resistance is changed into the software systems of electrode speed signal.
Principle of work of the present invention is:
Utilize drift 3 to replace the top electrode of resistance spot weld, utilize cylinder barrel 6, gasket ring 5 and fragility pin 4 to replace the bottom electrode of resistance spot weld.Displacement transducer 1 is measured the dynamic displacement of the relative bottom electrode of top electrode, and it is following that power sensor 7 is arranged on cylinder barrel 6, with potential electrode power.
Utilize drift 3 that fragility pin 4 is broken, rupture moment at fragility pin 4, the suffered reaction of bearing of drift 3 is zero, caves in suddenly with solder joint fusing in this process simulation point of resistance/projection welding process or salient point, causes electrode force to reduce suddenly even workpiece and loses situation about contacting with electrode.
The present invention is in the time of application:
According to the actual conditions of resistance welder, select the fragility pin of suitable diameter to be arranged on gasket ring, test period, required electrode force while fracture by power sensor test fragility pin, displacement by displacement transducer test fragility pin fracture back punching head with respect to cylinder barrel, by two paths of signals by data collecting card synchronous acquisition, transmit and be stored in computing machine, by software systems, displacement signal is differentiated, obtain the tracking velocity signal of electrode.The pin of changing different-diameter, repeated test, just can record the tracking velocity under Different electrodes power.Test result is mainly evaluates the dynamic mechanical properties of welding machine, and considers that machine characteristic etc. provides basis optimize welding parameter, numerical simulation of welding processes in welding process time.
Claims (4)
1. the method for testing of point of resistance/projection welder electrode system tracking velocity, it is characterized in that: the proving installation on welding machine gathers the electrode relative displacement of reflection electrode system tracking performance and electrode force parameter be transferred in computing machine and analyzes, and finally draws the tracking velocity of point of resistance/projection welder electrode system.
2. the method for testing of point of resistance/projection welder electrode system tracking velocity according to claim 1, it is characterized in that: described proving installation comprises and is arranged on the power on drift (3) of electrode seat (2) of welding machine, on the welder lower electrode seat (8) of the electrode seat that powers on (2) below, cylinder barrel (6) is installed, the in-built gasket ring 5 of cylinder barrel 6, on gasket ring 5, fill a fragility pin 4, described fragility pin 4 is corresponding with drift (3), in the bottom of cylinder barrel (6), piezo crystal power sensor 7 is installed, displacement transducer (1) one end is arranged in the electrode seat that powers on (2), the other end is arranged on lower electrode holder (8), displacement transducer (1) is connected with computing machine by data collecting card, described piezo crystal power sensor (7) is connected with data collecting card (10) by charge amplifier (9).
3. the method for testing of point of resistance/projection welder electrode system tracking velocity according to claim 2, is characterized in that: in order to make fragility pin (4) realize brittle fracture, on fragility pin (4), offer V-shaped groove, this V-shaped groove is corresponding with described drift.
4. the method for testing of point of resistance/projection welder electrode system tracking velocity according to claim 1, is characterized in that: in described computing machine (11), be provided with for by electrode relative displacement and electrode force signal synchronous collection and electrode displacement signals during resistance is changed into the software systems of electrode speed signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410069649.9A CN103808953A (en) | 2014-02-28 | 2014-02-28 | Method for testing tracking speed of resistance point/projection welder electrode system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410069649.9A CN103808953A (en) | 2014-02-28 | 2014-02-28 | Method for testing tracking speed of resistance point/projection welder electrode system |
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| CN103808953A true CN103808953A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410069649.9A Pending CN103808953A (en) | 2014-02-28 | 2014-02-28 | Method for testing tracking speed of resistance point/projection welder electrode system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618914A (en) * | 2016-01-15 | 2016-06-01 | 北京中戎华泰科技开发有限公司 | Novel unilateral resistance welding method |
| CN112536523A (en) * | 2019-09-20 | 2021-03-23 | 通用汽车环球科技运作有限责任公司 | Method for joining steel workpieces having different dimensional ratios |
-
2014
- 2014-02-28 CN CN201410069649.9A patent/CN103808953A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| WU PEI 等: "Testing and Modeling of Machine Properties in Resistance Welding", 《TECHNICAL UNIVERSITY OF DENMARK》 * |
| 刘桂梅 等: "电阻点焊动态电极力的测试", 《焊接》 * |
| 刘桂梅: "电阻点焊动态参数测试系统的设计开发", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618914A (en) * | 2016-01-15 | 2016-06-01 | 北京中戎华泰科技开发有限公司 | Novel unilateral resistance welding method |
| CN112536523A (en) * | 2019-09-20 | 2021-03-23 | 通用汽车环球科技运作有限责任公司 | Method for joining steel workpieces having different dimensional ratios |
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Application publication date: 20140521 |