CN206223086U - Workpiece surface deformation measurement detecting head and system - Google Patents
Workpiece surface deformation measurement detecting head and system Download PDFInfo
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- CN206223086U CN206223086U CN201621019899.2U CN201621019899U CN206223086U CN 206223086 U CN206223086 U CN 206223086U CN 201621019899 U CN201621019899 U CN 201621019899U CN 206223086 U CN206223086 U CN 206223086U
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Abstract
The utility model provides a kind of workpiece surface deformation measurement detecting head and system.The workpiece surface deformation measurement detecting head, including shell, probe, power conducting piece, back-moving spring are located at enclosure, and the syringe needle of probe is exposed to housing exterior；Probe bottom is connected with power conducting piece, and back-moving spring is sheathed on outside probe, the inner surface that back-moving spring upper end is power conducting piece, lower end is shell；The afterbody of probe is connected through shell with electrode；Base part is provided with pole span varying type capacitance displacement sensor, and gap is left between electrode and pole span varying type capacitance displacement sensor.The utility model additionally provides a kind of workpiece surface deformation measurement system.The physical deformation amount of workpiece is converted into the capacitance change of capacitor by the utility model using the operation principle of proximity transducer.Measuring point number arrangement detecting head as needed, and whether deformation values and the qualified signal of deformation that each is put are exported by display.Apparatus structure is simple, and sensitivity is good, and resolving power is high, good stability, fast response time, strong adaptability.
Description
Technical field
The utility model is related to a kind of workpiece surface deformation measurement device, is particularly suited for the complicated workpiece of surface configuration
Deformation measurement, belongs to test and measuring technical field.
Background technology
For some workpiece, due to the factor such as thin-wall part heat treatment method, machining accuracy, processing sequence be successively inconsistent,
Easily cause workpiece surface to deform, unqualified workpiece is when deflection exceeds certain limit.Present situation is at present：Workpiece is entering
Areal deformation judgement is not carried out before entering next station, workpiece deformation is just found excessively when all process steps terminate rear overall assembling, led
Processing is wasted and defective products is wasted to cause all of station of early stage all to cause.
It is this due to the generation of the unqualified caused wasting phenomenon of initial stage processing in order to prevent, it is necessary to which that workpiece surface is become
Shape is determined in advance.It is unqualified before workpiece enters next operation, it is necessary to the measure of areal deformation amount is carried out to workpiece
Product will not enter back into next production link so that effectively reduce production link waste.
It is 1-2 millimeters but the deflection of workpiece, especially thin-wall part is typically small, is visually difficult to find, and surveys by hand
Amount difficulty is big.Therefore, it is always the problem that those skilled in the art are devoted to solving for the measure of its areal deformation.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of certainty of measurement high, fast response time and simple structure
Workpiece surface deformation measurement detecting head and the system for being provided with the detecting head.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is to provide a kind of workpiece surface deformation measurement and visits
Gauge head, it is characterised in that：Including shell, probe, power conducting piece, back-moving spring are located at enclosure, and the syringe needle of probe is exposed to
Housing exterior；Probe bottom is connected with power conducting piece, and back-moving spring is sheathed on outside probe, and back-moving spring upper end is conducted for power
Part, back-moving spring lower end is the inner surface of shell；The afterbody of probe is connected through shell with electrode；
Base part is provided with pole span varying type capacitance displacement sensor, electrode and pole span varying type capacitance displacement sensor it
Between leave gap.
Preferably, the probe outer, coaxial is provided with slide bushing, and probe can be moved axially along slide bushing, slides lining
It is sheathed on the enclosure.
Preferably, the cover top portion is provided with hole, and the syringe needle of the probe is exposed to housing exterior through the hole.
Preferably, the probe is connected by screw with power conducting piece.
Preferably, the shell periphery is provided with mounting seat.
The utility model additionally provides a kind of workpiece surface deformation measurement system, it is characterised in that：Including
Above-mentioned workpiece surface deformation measurement detecting head；
The frame of detecting head and workpiece for measurement is determined for installing workpiece areal deformation；
For treatment and display that the pole span variable quantity to pole span varying type capacitance displacement sensor is processed and shown
Device.
Preferably, the frame includes support, and on support, fixture is provided with according to the workpiece change to be measured fixture
Installing plate designed by the measuring point of shape face, workpiece surface deformation measurement detecting head top is located on installing plate by mounting seat, pole
Away from varying type capacitance displacement sensor by mounting bracket located at installing plate lower section.
Preferably, the fixture is provided with for positioning and supports the alignment pin and supporting nail of workpiece for measurement.
The utility model additionally provides a kind of workpiece surface deformation measurement method, it is characterised in that：Using above-mentioned workpiece
Areal deformation measurement system, step is：
Step 1：Take workpiece template to be positioned on each workpiece surface deformation measurement detecting head, now each workpiece surface becomes for setting
It is worth on the basis of the capacitance of the pole span varying type capacitance displacement sensor of shape measure detecting head, pole span now is normal pitch；
Step 2：Workpiece template is removed, workpiece to be determined is positioned on each workpiece surface deformation measurement detecting head, surveyed
The electric capacitance change amount of the now pole span varying type capacitance displacement sensor of each workpiece surface deformation measurement detecting head is measured, so as to ask
Go out pole span now, this pole span is deformation quantity with the difference of normal pitch；
Step 3：Shown whether qualified the deformation quantity and workpiece be by display.
Preferably, the deformation range k1-k2 of certified products is set, as deformation quantity ＞ k2 or ＜ k1, display will show
The workpiece is unqualified；As k1 ＜ deformation quantity ＜ k2, the display prompts workpiece is qualified.
Be converted into for the physical deformation amount of workpiece using the operation principle of proximity transducer by the device that the utility model is provided
The capacitance change of capacitor, the change of the concussion state of capacitor is converted into electric signal, then after amplifier amplifies, conversion
It is variable quantity output valve.Measuring point number arrangement detecting head as needed, and each deformation put is exported by display
Value and the whether qualified signal of deformation.
The utility model provides a kind of safe and reliable new method for the measurement of thin-wall part deflection, and it has has as follows
Beneficial effect：
(1) sensitivity is good, and resolving power is high.High impedance, small-power, thus required input power very little, defeated people's energy is also very
It is low.Capacitance type sensor because between powered pole plate electrostatic attraction it is minimum, therefore can be made very sensitive, resolving power is very high, can feel
By 0.001 μm of even more small displacement.
(2) temperature stability is good.The capacitance of sensor is typically unrelated with electrode material, is conducive to selection temperature coefficient low
Material, and because itself heating it is minimum, it is little to stability influence.
(3) simple structure, strong adaptability.Body to be measured be conductor or semiconductor equalizing can, can be worked in adverse circumstances.Electric capacity
Formula sensor construction is simple, it is easy to manufacture, can be made it is very compact, to realize some special measurements；Can be operated in high/low temperature,
In the rugged environment such as intense radiation and high-intensity magnetic field, the magnetic workpiece of band can also be measured.
(4) dynamic response is good.Due to the electrostatic attraction very little between pole plate, moving part is made very small very thin, therefore it is solid
There is frequency very high, dynamic response time is short.Workpiece measurement a little can be complete in act after workpiece is placed 1 second
Into.
Brief description of the drawings
The workpiece surface deformation measurement detecting head external structure schematic diagram that Fig. 1 is provided for the present embodiment；
The workpiece surface deformation measurement detecting head internal structure schematic diagram that Fig. 2 is provided for the present embodiment；
The workpiece surface deformation measurement system structure diagram that Fig. 3 is provided for the present embodiment；
The workpiece surface deformation measurement system operating diagram that Fig. 4 is provided for the present embodiment.
Specific embodiment
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation scope of the present utility model.In addition, it is to be understood that reading the content of the utility model instruction
Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values equally fall within this Shen
Please appended claims limited range.
Fig. 1 and Fig. 2 are respectively the workpiece surface deformation measurement detecting head outwardly and inwardly structural representation of the present embodiment offer
Figure, described workpiece surface deformation measurement detecting head is by probe 10, mounting seat 20, shell 30, electrode 40, top slide bushing
50th, lower slide bushing 60, power conducting piece 70, back-moving spring 80, screw 90 are constituted.
Probe 10, top slide bushing 50, lower slide bushing 60, power conducting piece 70, back-moving spring 80 are respectively positioned on shell
Inside 30.The top of shell 30 is provided with aperture, and the syringe needle of probe 10 passes through the aperture, is exposed to outside shell 30.Top slide bushing
50th, lower slide bushing 60 is respectively fitted over the upper and lower part outside of probe 10, and probe 10 can be moved along slide bushing is axially unidirectional
Dynamic, the lower end of probe 10 is connected by screw 90 with power conducting piece 70, i.e., probe 10 passes through power conducting piece 70；Back-moving spring 80 is enclosed within
The bottom of probe 10, the upper end of back-moving spring 80 is that power conducting piece 70, lower end is the inner surface of shell 30.
Meanwhile, probe 10 is connected by screw thread through shell 30 with electrode 40.The lower section of electrode 40 is provided with pole span varying type electricity
Hold displacement transducer 100.Original state, be spaced between electrode 40 and pole span varying type capacitance displacement sensor 100 it is certain away from
From.
When probe 10 is moved down under the pressure effect of deformation plance, the compression spring 80 of conducting piece 70 will be driven, meanwhile,
The electrode 40 being connected through a screw thread together is moved downward, and the displacement of probe 10 is deformation of the deformation plance along probe direction
Amount, the deformation quantity is finally translated into the pole span variable quantity of pole span varying type capacitance displacement sensor 100.
Meanwhile, the assembling of itself is fixed when being used for detecting head, and mounting seat 20 is cased with the upper periphery of shell 30, is installed
Seat 20 is connected through a screw thread with shell 30.
With reference to Fig. 3, the present embodiment additionally provides a kind of workpiece surface deformation measurement system, including support 110, fixture 120
It is arranged on support 110 by mounting hole 124.According to the installing plate of the workpiece deformation plance measuring point design specialized to be measured
130, and on fixture 120.Detecting head A is arranged on installing plate 130, the mounting seat 20 of detecting head is stuck in installing plate
130 tops, the bottom of installing plate 130 is provided with mounting bracket 140, by mounting bracket 140 by pole span varying type capacitance displacement sensor 100
Install in place.
Meanwhile, capacitance displacement sensor 100 is connected with processor and display.
With reference to Fig. 4, when workpiece surface deformation measurement system is used, by workpiece 150 on detecting head, and by alignment pin
121st, 122 and supporting nail 123 position and support workpiece 150.
The operation principle of workpiece surface deformation measurement system：After designing, make and installing measurement system, workpiece template is taken
By supporting nail support, value on the basis of now capacitance is set, pole span now is normal pitch；Then template is removed, will be to be measured
Determine after workpiece places, measurement electric capacitance change amount now, such that it is able to obtain pole span now, this pole span and normal pitch
Difference is deformation quantity.
The deformation quantity can be shown by display, meanwhile, the deformation range k1-k2 of certified products is set, work as deformation
During amount ＞ k2 or ＜ k1, display will show that the workpiece is unqualified；As k1 ＜ deformation quantity ＜ k2, the display prompts workpiece
It is qualified.
Claims (8)
1. a kind of workpiece surface deformation measurement detecting head, it is characterised in that：Including shell (30), probe (10), power conducting piece
(70), back-moving spring (80) is internal located at shell (30), and the syringe needle of probe (10) is exposed to shell (30) outside；Under probe (10)
Portion is connected with power conducting piece (70), and back-moving spring (80) is sheathed on probe (10) outside, and back-moving spring (80) upper end is that power is conducted
Part (70), back-moving spring (80) lower end is the inner surface of shell (30)；The afterbody of probe (10) passes through shell (30) and electrode
(40) connect；
Electrode (40) lower section is provided with pole span varying type capacitance displacement sensor (100), electrode (40) and pole span varying type electric capacity position
Displacement sensor leaves gap between (100).
2. a kind of workpiece surface deformation measurement detecting head as claimed in claim 1, it is characterised in that：The probe (10) is outside
Slide bushing is coaxially provided with, probe (10) can be moved axially along slide bushing, slide bushing is internal located at the shell (30).
3. a kind of workpiece surface deformation measurement detecting head as claimed in claim 1, it is characterised in that：Shell (30) top
Hole is provided with, the syringe needle of the probe (10) is exposed to shell (30) outside through the hole.
4. a kind of workpiece surface deformation measurement detecting head as claimed in claim 1, it is characterised in that：The probe (10) passes through
Screw (90) is connected with power conducting piece (70).
5. a kind of workpiece surface deformation measurement detecting head as claimed in claim 1, it is characterised in that：Shell (30) periphery
It is provided with mounting seat (20).
6. a kind of workpiece surface deformation measurement system, it is characterised in that：Including
Workpiece surface deformation measurement detecting head (A) as described in any one of Claims 1 to 5；
The frame of detecting head (A) and workpiece for measurement is determined for installing workpiece areal deformation；
For treatment and display that the pole span variable quantity to pole span varying type capacitance displacement sensor (100) is processed and shown
Device.
7. a kind of workpiece surface deformation measurement system as claimed in claim 6, it is characterised in that：The frame includes support
(110), on support (110), fixture (120) is provided with according to the workpiece deformation plance measuring point to be measured fixture (120)
Designed installing plate (130), workpiece surface deformation measurement detecting head (A) top is by mounting seat (20) located at installing plate
(130) on, pole span varying type capacitance displacement sensor (100) is by mounting bracket (140) located at installing plate (130) lower section.
8. a kind of workpiece surface deformation measurement system as claimed in claim 7, it is characterised in that：Set on the fixture (120)
There are for positioning and support the alignment pin and supporting nail of workpiece for measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621019899.2U CN206223086U (en) | 2016-08-31 | 2016-08-31 | Workpiece surface deformation measurement detecting head and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621019899.2U CN206223086U (en) | 2016-08-31 | 2016-08-31 | Workpiece surface deformation measurement detecting head and system |
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| Publication Number | Publication Date |
|---|---|
| CN206223086U true CN206223086U (en) | 2017-06-06 |
Family
ID=58782745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621019899.2U Active CN206223086U (en) | 2016-08-31 | 2016-08-31 | Workpiece surface deformation measurement detecting head and system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247922A (en) * | 2016-08-31 | 2016-12-21 | 丰汉电子(上海)有限公司 | A kind of surface of the work deformation measurement detecting head, system and method |
| CN107825115A (en) * | 2017-11-27 | 2018-03-23 | 苏州索力旺新能源科技有限公司 | A kind of photovoltaic junction box assembling detection device |
| CN108168488A (en) * | 2018-03-20 | 2018-06-15 | 成都飞机工业（集团）有限责任公司 | A kind of detection device of contact drilling quality |
| CN109540701A (en) * | 2018-12-14 | 2019-03-29 | 东北大学 | A kind of LVDT displacement sensor fixed mechanism applied to rock shearing test |
| CN110388868A (en) * | 2019-07-30 | 2019-10-29 | 哈尔滨理工大学 | A kind of Kirschner wire chip space size detecting system |
| CN110702053A (en) * | 2019-10-23 | 2020-01-17 | 沈阳航空航天大学 | Device and method for rapidly measuring contact precision of thin-wall structural member and clamp |
| CN110749299A (en) * | 2019-10-23 | 2020-02-04 | 沈阳航空航天大学 | Device and method for rapidly measuring contact precision of thin-wall rotating member and clamp |
-
2016
- 2016-08-31 CN CN201621019899.2U patent/CN206223086U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247922A (en) * | 2016-08-31 | 2016-12-21 | 丰汉电子(上海)有限公司 | A kind of surface of the work deformation measurement detecting head, system and method |
| CN107825115A (en) * | 2017-11-27 | 2018-03-23 | 苏州索力旺新能源科技有限公司 | A kind of photovoltaic junction box assembling detection device |
| CN108168488A (en) * | 2018-03-20 | 2018-06-15 | 成都飞机工业（集团）有限责任公司 | A kind of detection device of contact drilling quality |
| CN109540701A (en) * | 2018-12-14 | 2019-03-29 | 东北大学 | A kind of LVDT displacement sensor fixed mechanism applied to rock shearing test |
| CN109540701B (en) * | 2018-12-14 | 2021-08-17 | 东北大学 | Be applied to rock shear test's LVDT displacement sensor fixed establishment |
| CN110388868A (en) * | 2019-07-30 | 2019-10-29 | 哈尔滨理工大学 | A kind of Kirschner wire chip space size detecting system |
| CN110388868B (en) * | 2019-07-30 | 2021-03-23 | 哈尔滨理工大学 | Size detection system for chip removal groove of Kirschner wire |
| CN110702053A (en) * | 2019-10-23 | 2020-01-17 | 沈阳航空航天大学 | Device and method for rapidly measuring contact precision of thin-wall structural member and clamp |
| CN110749299A (en) * | 2019-10-23 | 2020-02-04 | 沈阳航空航天大学 | Device and method for rapidly measuring contact precision of thin-wall rotating member and clamp |
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