CN103308143A - Plaster mold tool capable of improving sound absorption testing result reliability of automobile acoustic part - Google Patents
Plaster mold tool capable of improving sound absorption testing result reliability of automobile acoustic part Download PDFInfo
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- CN103308143A CN103308143A CN2013102752234A CN201310275223A CN103308143A CN 103308143 A CN103308143 A CN 103308143A CN 2013102752234 A CN2013102752234 A CN 2013102752234A CN 201310275223 A CN201310275223 A CN 201310275223A CN 103308143 A CN103308143 A CN 103308143A
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- plaster mold
- mold tool
- sound absorption
- acoustic part
- result reliability
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Abstract
The invention provides a plaster mold tool capable of improving sound absorption testing result reliability of an automobile acoustic part. The upper surface of the plaster mold tool is matched with a sample member to be tested in shape, so that the sample member to be tested is firmly bonded with the upper surface of the plaster mold tooling when the sample member to be tested is placed on the upper surface of the plaster mold tool, and the upper surface of the sample member to be tested is a sound absorption surface needing to be tested and needs to be placed upwards. The plaster mold tool capable of improving the sound absorption testing result reliability of the automobile acoustic part is simple in structure and good in using effect and greatly improves testing results.
Description
Technical field
The present invention relates to a kind of frock, specifically a kind of plaster mold frock of improving acoustic part of automobile sound-absorbing test result reliability.
Background technology
Along with developing rapidly of Domestic Automotive Industry, the demand that is suitable for the auto parts and components goods of various dissimilar and class increases increasingly.Have many for irregularly shaped in the auto parts and components, if directly erose tested sample is placed and carries out the sound-absorbing test on the ground, then because there is air layer on irregular tested sample and ground, and between the sound insulating material that covers of the tested sample back side and the exemplar cavity is arranged unavoidably, thereby impact is to the accuracy of the test result of the sound-absorbing face of tested sample.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of plaster mold frock of improving acoustic part of automobile sound-absorbing test result reliability, tested sample and this plaster mold frock are fitted tightly when test, thereby improve the reliability of test.The technical solution used in the present invention is:
A kind of plaster mold frock of improving acoustic part of automobile sound-absorbing test result reliability, the upper surface of described plaster mold frock and the shape of tested sample are complementary so that tested sample when being positioned over plaster mold frock upper surface and the upper surface of plaster mold frock fit tightly;
The lower surface of described plaster mold frock is the plane.
Advantage of the present invention: this plaster mold tool structure is simple, and result of use is good.Greatly improved test result.
Description of drawings
Fig. 1 is plaster mold frock schematic diagram of the present invention.
Fig. 2 is the tested sample schematic diagram.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in Figure 1 and Figure 2:
A kind of plaster mold frock of improving acoustic part of automobile sound-absorbing test result reliability, the shape that its upper surface adds building site and tested sample is complementary.When being placed on tested sample on the plaster mold frock, tested sample fully and the upper surface of plaster mold frock fit tightly the chamber of not leaving a blank, centre.The upper surface of tested sample needs to place up for needing the sound-absorbing face of test.The lower surface of described plaster mold frock is the plane.
Therefore and fit finely between the ground when testing, at first the plaster mold frock is placed on ground smooth in the reverberation chamber, because the lower surface of plaster mold frock is flat,, does not have air layer.Then tested sample is placed in plaster mold frock upper surface according to the die cavity correspondence of plaster mold, periphery is used the sound insulating material bound edge, can prevent further that sound from entering between plaster mold frock upper surface and the tested sample.
Utilize testing software to measure the reverberation time that microphone receives when adding tested sample; Then tested sample is taken out, the received reverberation time of microphone when test does not add tested sample, by the sound-absorbing computing formula, obtain sound-absorption coefficient.
Claims (1)
1. plaster mold frock of improving acoustic part of automobile sound-absorbing test result reliability, it is characterized in that: the upper surface of described plaster mold frock and the shape of tested sample are complementary so that tested sample when being positioned over plaster mold frock upper surface and the upper surface of plaster mold frock fit tightly;
The lower surface of described plaster mold frock is the plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310275223.4A CN103308143B (en) | 2013-07-02 | 2013-07-02 | Improve the plaster mold frock of acoustic part of automobile sound-absorbing test result reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310275223.4A CN103308143B (en) | 2013-07-02 | 2013-07-02 | Improve the plaster mold frock of acoustic part of automobile sound-absorbing test result reliability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103308143A true CN103308143A (en) | 2013-09-18 |
| CN103308143B CN103308143B (en) | 2016-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310275223.4A Active CN103308143B (en) | 2013-07-02 | 2013-07-02 | Improve the plaster mold frock of acoustic part of automobile sound-absorbing test result reliability |
Country Status (1)
| Country | Link |
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| CN (1) | CN103308143B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236476B (en) * | 2014-08-22 | 2017-01-04 | 无锡吉兴汽车声学部件科技有限公司 | For detecting acoustic part of automobile fabric face detection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100054487A1 (en) * | 2008-08-29 | 2010-03-04 | Chi Mei Communication Systems, Inc. | Sound insulating device |
| CN102565191A (en) * | 2012-02-17 | 2012-07-11 | 重庆长安汽车股份有限公司 | Device for evaluating sound insulation and absorption performance of automobile body part |
-
2013
- 2013-07-02 CN CN201310275223.4A patent/CN103308143B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100054487A1 (en) * | 2008-08-29 | 2010-03-04 | Chi Mei Communication Systems, Inc. | Sound insulating device |
| CN102565191A (en) * | 2012-02-17 | 2012-07-11 | 重庆长安汽车股份有限公司 | Device for evaluating sound insulation and absorption performance of automobile body part |
Non-Patent Citations (2)
| Title |
|---|
| 卢笛: "不规则工件的装夹", 《铁道机车车辆工人》 * |
| 马光等: "不规则工件的新型加工方法", 《现代机械》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236476B (en) * | 2014-08-22 | 2017-01-04 | 无锡吉兴汽车声学部件科技有限公司 | For detecting acoustic part of automobile fabric face detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103308143B (en) | 2016-04-13 |
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