CN104236765B - Piezoelectric type internal stress sensor - Google Patents
Piezoelectric type internal stress sensor Download PDFInfo
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- CN104236765B CN104236765B CN201310344835.4A CN201310344835A CN104236765B CN 104236765 B CN104236765 B CN 104236765B CN 201310344835 A CN201310344835 A CN 201310344835A CN 104236765 B CN104236765 B CN 104236765B
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- elastomer
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- internal stress
- nut
- tensioning sleeve
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of piezoelectric type internal stress sensor, it includes tensioning sleeve (1), elastomer (2), nut (3), sensing element (4), conductive plate (5), electric wire connecting junction (6), cable (7) and intensity clay (8).When high speed stamping equipment runs, the downward stamping strip of pressure head, make plant bottom case deform generation internal stress.Being arranged on the sensor within plant bottom case internal stress is converted to charge signal to pass to monitoring instrument, monitoring instrument judges current device ruuning situation and stamping strip part quality according to preset program, performs control task, ensures the properly functioning of equipment with this.This piezoelectric type internal stress sensor construction is simple, volume is little, precision is high, life-span length and easy for installation, applied ram coin power of can accurately measuring in high speed stamping equipment, workpiece qualification rate, equipment productivity and factory management automatization level will be greatly improved in conjunction with supporting intelligent controller, in the extension device life-span, reduce cost of labor.
Description
Technical field
The present invention relates to a kind of internal stress sensor, particularly one be used for measuring the change of high speed stamping plant bottom case internal stress
A novel dynamic force transducer changed.
Technical background
High speed stamping equipment is that standard component (such as: screw, nut, rivet, steel ball etc.) produces obligato capital equipment.With
Technological progress and human cost quickly goes up, pressing equipment is towards multistation, fast pace, automation direction development, its work
Part process velocity significantly improves, and consequent equipment security control and control of product quality problem are more prominent.Rush at workpiece
In the pressure course of processing, speed is fast, noise is big, and operator is the most tired, if do not control effectively equipment, only with manually
Monitoring, there will be often because equipment attrition, pressure head breakage, mould fall the factor such as block, secondary punch die and cause a large amount of waste product to produce, very
To causing the device damage of hundreds of thousands unit, artificial quality and technical ability are relied on higher by workpiece quality and equipment safety, human cost
High.How to improve production efficiency of equipment and product quality, effectively reducing production cost is that vast standard component produces
The technical problem that enterprise is always worried.Patent of the present invention is through the change of monitoring device base internal stress and judges work pieces process
A kind of core component that process is the most abnormal, is equipped with suitable control method and just can increase substantially utilization rate of equipment and installations, work life
Productivity and product quality, just can effectively reduce skill set requirements and the production cost of equipment operator.
Summary of the invention
In order to reach the purpose of accurate measurements plant bottom case internal stress change, the technical scheme is that employing piezoelectricity pottery
The direct piezoelectric effect design of ceramic material, making a kind of piezoelectric type internal stress sensor, it includes tensioning sleeve (1), elastomer (2),
Nut (3), sensing element (4), conductive plate (5), electric wire connecting junction (6), cable (7) and intensity clay (8), it is characterised in that: two
Block sensing element (4) bonds together with adhesive glue with conductive plate (5), puts into elastomer (2) otch, and with otch above and below
Bond together with adhesive glue；Conductive plate (5) afterbody welds together with cable (7), and cable (7) is through electric wire connecting junction (6), elasticity
Body (2) and nut (3)；Electric wire connecting junction (6) nips cable (7)；Elastomer (2) closely cooperates with tensioning sleeve (1), elastomer (2) tail
Portion couples through tensioning sleeve (1) with nut (3)；Intensity clay (8) it is filled with inside elastomer.
Described tensioning sleeve (1) is tube-in-tube structure；Outer surface is stepped cylindrical, and small cylindrical surface has screw thread；Inner surface front end
For cone；Middle is cylindrical；Tail end is square, square closely cooperates with elastomer (2) middle part；Front end edge radial direction has
The otch run through.
Described elastomer (2) front end is cone, radially has the otch run through；Middle part is square, with tensioning sleeve
(1) uropore coordinates；Trailing exterior surface is thread cylinder, coordinates with nut (3).
Described nut (3) is cylindric, has inner hole thread, coordinates with elastomer (2)；Tail end has radial slot and frock
(9) coordinate；Axle center is porose to be coordinated with cable (7).
Described sensing element (4) is piezoceramic material, squarely, and when bonding with conductive plate (5), same polarity faces guide
Electroplax.
Described cable (7) is quiet noise cable, and noise is little.
Described intensity clay (8) intensity is high, insulation impedance >=1000M Ω.
Due to the utilization of technique scheme, the present invention has the advantage that when high speed stamping equipment runs, pressure head to
Lower stamping strip, produces stamping press.There is plastic deformation in blank under the effect of stamping press, produce opposing plastic deformation simultaneously
Power, reacts on plant bottom case, makes plant bottom case deform thus produces internal stress, and this internal stress size and stamping press are line
Sexual relationship.Sensor is arranged on inside plant bottom case, and when plant bottom case produces elastic deformation, internal stress is passed through pressure by sensor
Electric sensitive element is converted into charge signal by linear ratio relation, and charge signal passes out supervise for rear end through conductive plate, cable
Control instrument collection analysis.After monitoring instrument receives sensor charge signal, judge that current device runs feelings according to preset program
Condition and stamping strip part quality, and make sorting or shutdown action.Such as: pressing equipment breaks down, charging may be caused
Partially grow, workpiece dimension transfinites, stamping press is excessive, and monitor controller will prevent from causing according to the real-time stopping alarm of monitoring result
Pressing equipment and burn failure；Being likely to cause charging deficiency, workpiece dimension is not enough, stamping press is too small, and monitor controller will
According to the real-time stopping alarm of monitoring result, prevent from causing a large amount of defective work output.This piezoelectric type internal stress sensor construction letter
Single, volume is little, and precision is high, life-span length and easy for installation, is applied and can accurately measure ram coin in high speed stamping equipment
Power, will be greatly improved workpiece qualification rate, equipment productivity and factory management automatization level in conjunction with supporting intelligent controller, prolong
Long equipment life, reduce cost of labor.
Accompanying drawing explanation
Fig. 1 is the main sectional view of the present invention.
Fig. 2 is scheme of installation of the present invention and loads schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, advantageous embodiments of the present invention is described in detail.
As it is shown in figure 1, the present invention relates to a kind of piezoelectric type internal stress sensor, it includes tensioning sleeve (1), elastomer (2),
Nut (3), sensing element (4), conductive plate (5), electric wire connecting junction (6), cable (7) and intensity clay (8), it is characterised in that: two
Block sensing element (4) bonds together with adhesive glue with conductive plate (5), puts into elastomer (2) otch, and with otch above and below
Bond together with adhesive glue；Conductive plate (5) afterbody welds together with cable (7), and cable (7) is through electric wire connecting junction (6), elasticity
Body (2) and nut (3)；Electric wire connecting junction (6) nips cable (7)；Elastomer (2) closely cooperates with tensioning sleeve (1), elastomer (2) tail
Portion couples through tensioning sleeve (1) with nut (3)；Intensity clay (8) it is filled with inside elastomer.
As in figure 2 it is shown, utilize special frock (9) to be installed on inside pressing equipment by sensor.Transport at high speed stamping equipment
During row, the downward stamping strip of pressure head, produce stamping press.There is plastic deformation in blank under the effect of stamping press, produces simultaneously and support
The power of anti-plastic deformation, reacts on plant bottom case, makes plant bottom case deform thus produces internal stress, this internal stress size
Linear with stamping press.Sensor is arranged on inside plant bottom case, and when plant bottom case produces elastic deformation, sensor will
Internal stress is converted into charge signal by piezoelectric sensing element by linear ratio relation, and charge signal is through conductive plate, cable transmission
Out for rear end monitoring instrument collection analysis.After monitoring instrument receives sensor charge signal, judge to work as according to preset program
Front machine operation and stamping strip part quality, and make sorting or shutdown action.Such as: pressing equipment breaks down,
May cause feeding partially long, workpiece dimension transfinites, stamping press is excessive, monitor controller will shut down report in real time according to monitoring result
Alert, prevent from causing pressing equipment and burn failure；Being likely to cause charging deficiency, workpiece dimension is not enough, stamping press is too small,
Monitor controller will prevent from causing a large amount of defective work output according to the real-time stopping alarm of monitoring result.This piezoelectric type internal stress passes
Sensor simple in construction, volume is little, and precision is high, life-span length and easy for installation, is applied and can accurately survey in high speed stamping equipment
Piezometric primary drying pressure, will be greatly improved workpiece qualification rate, equipment productivity and factory management certainly in conjunction with supporting intelligent controller
Dynamicization level, in the extension device life-span, reduces cost of labor.
Content described in this specification embodiment is only the citing of the way of realization to inventive concept, the protection of the present invention
Scope is not construed as being only limitted to the concrete form that this example is stated, protection scope of the present invention also includes people in the art
Member is according to the thinkable equivalent technology means of present inventive concept.
Claims (1)
1. a piezoelectric type internal stress sensor, it includes tensioning sleeve (1), elastomer (2), nut (3), sensing element (4), leads
Electroplax (5), electric wire connecting junction (6), cable (7) and intensity clay (8), it is characterised in that: two pieces of sensing elements (4) and conductive plate
(5) bond together with adhesive glue, put into elastomer (2) otch, and bond together with otch above and below adhesive glue；Lead
Electroplax (5) afterbody welds together with cable (7), and cable (7) is through electric wire connecting junction (6), elastomer (2) and nut (3)；Electric wire connecting junction
(6) cable (7) is nipped；Elastomer (2) closely cooperates with tensioning sleeve (1), and elastomer (2) afterbody passes tensioning sleeve (1) and nut
(3) couple；Intensity clay (8) it is filled with inside elastomer；Described tensioning sleeve (1) is tube-in-tube structure；Outer surface is ladder circle
Post, small cylindrical surface has screw thread；Inner surface front end is cone；Middle is cylindrical；Tail end is square, and in elastomer (2)
Portion is square to closely cooperate；Front end edge radial direction has the otch run through；Described elastomer (2) front end is cone, radially side
To there being the otch run through；Middle part is square, coordinates with tensioning sleeve (1) uropore；Trailing exterior surface is thread cylinder, with nut (3)
Coordinate；Described nut (3) is cylindric, has inner hole thread, coordinates with elastomer (2)；Tail end has radial slot to join with frock (9)
Close；Axle center is porose to be coordinated with cable (7)；Described sensing element (4) is piezoceramic material, is square, and glues with conductive plate (5)
During conjunction, same polarity is facing to conductive plate；Described cable (7) is quiet noise cable；Insulation impedance >=the 1000M of described intensity clay
Ω。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310344835.4A CN104236765B (en) | 2013-08-03 | 2013-08-03 | Piezoelectric type internal stress sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310344835.4A CN104236765B (en) | 2013-08-03 | 2013-08-03 | Piezoelectric type internal stress sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104236765A CN104236765A (en) | 2014-12-24 |
| CN104236765B true CN104236765B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310344835.4A Active CN104236765B (en) | 2013-08-03 | 2013-08-03 | Piezoelectric type internal stress sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113295249B (en) * | 2021-05-26 | 2022-11-08 | 四川奇石缘科技股份有限公司 | Spliced flat-plate composite dynamic truck scale and mounting method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102410892B (en) * | 2011-08-05 | 2013-09-11 | 陈洪凯 | Piezoelectric type borehole stress sensor and slope stress monitoring method thereof |
| CN102384802A (en) * | 2011-08-08 | 2012-03-21 | 大连理工大学 | Embedded type sensor of overall process shear stress of concrete dynamic damage |
| CN203519225U (en) * | 2013-08-03 | 2014-04-02 | 绵阳市奇石缘科技有限公司 | Piezoelectric internal stress sensor |
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Address after: 621000 Fucheng Road, Sichuan, Mianyang, No. 20 Applicant after: Sichuan Qi Shiyuan Science and Technology Co., Ltd. Address before: 621000 Fucheng Road, Sichuan, Mianyang, No. 20 Applicant before: MIANYANG QISHIYUAN SCI.ANDTECH CO.,LTD |
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Free format text: CORRECT: APPLICANT; FROM: MIANYANG QISHIYUAN SCIENCE + TECHNOLOGY CO., LTD. TO: SICHUAN QISHIYUAN TECHNOLOGY CO., LTD. |
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Address after: 621000 Mianyang city of Sichuan Province Branch Chong Park Innovation Service Center Applicant after: Sichuan Qi Shiyuan Science and Technology Co., Ltd. Address before: 621000 Fucheng Road, Sichuan, Mianyang, No. 20 Applicant before: Sichuan Qi Shiyuan Science and Technology Co., Ltd. |
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