CN210374970U - Mounting fixture of non-contact displacement sensor suitable for portable indentation instrument - Google Patents
Mounting fixture of non-contact displacement sensor suitable for portable indentation instrument Download PDFInfo
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- CN210374970U CN210374970U CN201920953110.8U CN201920953110U CN210374970U CN 210374970 U CN210374970 U CN 210374970U CN 201920953110 U CN201920953110 U CN 201920953110U CN 210374970 U CN210374970 U CN 210374970U
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- pressure head
- fixed
- displacement sensor
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Abstract
The mounting fixture for the non-contact displacement sensor of the portable indentation instrument is characterized in that two target plate supports are provided, the upper part of each target plate support is fixed on a base support, and two sides of a target plate are respectively fixed on one target plate support; the non-contact displacement sensor probe is fixed at one end of the sensor support, the pressure head connecting part is fixed at the other end of the sensor support, the sensor support is fixed above the pressure head connecting part and below the linear motor transmission rod, the pressure head is arranged below the sensor support, and the pressure head connecting part is arranged above the pressure head connecting part and below the linear motor transmission rod. The utility model discloses fix the target board in target board support top, the target board support is fixed on the base support, and non-contact displacement sensor probe installation can avoid unnecessary installation clearance in pressure head adapting unit top and linear electric motor transfer line below, and then is showing and promoting displacement measurement's repeatability and accuracy, improves frame rigidity, and the accurate measurement degree of depth of impressing provides reliable data for further calculation material mechanics nature.
Description
Technical Field
The utility model relates to the installation of portable pressure sensor on the appearance is particularly useful for non-contact displacement sensor's installation, non-contact displacement sensor includes eddy current displacement sensor, electric capacity displacement sensor.
Background
The press-in load and the press-in depth are two key parameters in an instrumented press-in technology, and directly influence the accuracy of calculating mechanical parameters of materials, so accurate measurement is needed. In a portable indentation instrument based on linear motor driving, if a grating ruler integrated inside a linear motor is used for measuring indentation depth, deformation quantity of gaps between more gaps on a rack and gaps between other parts on a linear motor transmission rod is inevitably introduced, so that a large error is brought to the calculation of the indentation depth. Mounting the non-contact displacement sensor probe in place with the target plate eliminates a significant amount of play. Thus, the penetration depth can be measured using a non-contact displacement sensor. In a portable indenter, mounting a non-contact displacement sensor probe at a different location from the target plate will significantly affect the reliability of measuring the indentation depth.
Disclosure of Invention
In order to overcome the relatively poor not enough of reliability of existing displacement measurement mode, the utility model provides a mounting fixture suitable for portable non-contact displacement sensor who impresses the appearance, fix the target board in target board support top, the target board support is fixed on the base support, non-contact displacement sensor probe is installed in pressure head adapting unit top and linear electric motor transfer line below, can avoid unnecessary installation clearance, and then show repeatability and the accuracy nature that promotes displacement measurement, improve frame rigidity, the accurate measurement degree of depth of impressing, provide reliable data for further calculation material mechanics nature.
The utility model provides a technical scheme that its technical problem adopted is:
the mounting fixture for the non-contact displacement sensor suitable for the portable indentation instrument comprises two target plate supports, two target plates, two sensor supports and a pressure head connecting component, wherein the upper part of each target plate support is fixed on a base support, and two sides of each target plate are respectively fixed on one target plate support; the sensor comprises a sensor support and is characterized in that a non-contact displacement sensor probe is fixed at one end of the sensor support, a pressure head connecting part is fixed at the other end of the sensor support, the sensor support is fixed above the pressure head connecting part and below a linear motor transmission rod, a pressure head is arranged below the pressure head connecting part, and the pressure head is arranged below the pressure head connecting part and below the linear motor transmission rod.
Furthermore, a groove is formed in the middle of the upper portion of the target plate support, and the target plate support is fixed to a threaded hole of the base support through a screw and used for adjusting the upper position and the lower position of the target plate on the base support.
And furthermore, a unthreaded hole is formed below the target plate bracket and used for fixing the target plate, and grooves are formed in the middles of two sides of the target plate and are fixed on the target plate bracket through screws.
Furthermore, the sensor bracket is provided with two threaded holes, one threaded hole is used for fixing the non-contact displacement sensor probe, and the other threaded hole is used for fixing the pressure head connecting component.
Preferably, the sensor bracket is fixed above the pressure head connecting part and below the linear motor transmission rod through nuts.
And the upper part of the pressure head connecting part is arranged below the linear motor transmission rod through threads.
The utility model discloses beneficial effect mainly shows: the positions of the target plate and the non-contact displacement sensor probe can be adjusted up and down, so that the non-contact displacement sensor is installed at a proper position; furthermore, the mass centers of the non-contact displacement sensor probe and the sensor bracket are coaxial with the mass center of the linear motor transmission rod, so that the friction force generated by the bending moment between the linear motor transmission rod and the guide rail in the motor is avoided, and the press-in load is calculated more accurately; furthermore, the non-contact displacement sensor probe is fixed above the pressure head and below the linear motor transmission rod, the target plate is fixed above the target plate support, and the target plate support is fixed on the base support, so that a large amount of gap deformation can be avoided, the repeatability of the rigidity and displacement measurement of the rack is obviously improved, the press-in depth is further accurately calculated, and reliable data are provided for acquiring material mechanical parameters.
Drawings
Fig. 1 is a schematic view of a portable indenter, in which 1 is a target plate holder, 2 is a target plate, 3 is a non-contact displacement sensor probe, 4 is a sensor holder, 5 is a ram, 6 is a ram connecting member, 7 is a linear motor driving rod, 8 is a base holder, 9 is a base, 10 is a linear motor, 11 is a linear motor holder, 12 is a column, 13 is a beam, 14 is a supporter, and 15 is an adjusting knob.
Fig. 2 is an axial view of a mounting fixture for a non-contact displacement sensor suitable for use in a portable indenter.
Fig. 3 is a schematic view of the target plate holder holding the target plate.
FIG. 4 is a diagram of the equivalent mechanics model installed in the portable indentation apparatus of the present invention, where S is the sample stiffness, KIIs the head stiffness, KRodIs the rigidity, K, of the linear motor transmission rod 7sIs the stiffness of the suspension spring inside the motor, KActivity deviceIs the equivalent stiffness, δ, of the motor bracket 11 and the linear motor 10Interval 1K is the sum of the gap between the linear motor bracket 11 and the linear motor 7, the gap between the motor bracket 11 and the beam 13, and the gap between the beam 13 and the knob 15BeamIs the equivalent stiffness, K, of the cross beam 13 and the support 14ColumnIs the stiffness of the column 12, deltaBetween 2Is a gap between the portable indentation instrument base support 8 and the base 9.
Fig. 5 is an axial view of a target plate holder.
Fig. 6 is an axial view of the target plate.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 6, the mounting fixture of the non-contact displacement sensor suitable for the portable indenter comprises two target plate supports 1, a target plate 2, a sensor support 4 and a pressure head connecting part 6, wherein a groove is formed in the middle of the upper part of the target plate support 1 and is fixed on a threaded hole of a base support 8 through a screw to adjust the upper and lower positions of the target plate 2; the lower part is provided with a unthreaded hole for fixing the target plate 2. The middle of two sides of the target plate 2 is provided with a groove and is fixed on the target plate bracket 1 through screws. The sensor bracket 4 is provided with two threaded holes, one threaded hole is used for fixing the non-contact displacement sensor probe 3, and the other threaded hole is used for fixing the pressure head connecting part 6. And the sensor bracket 4 is fixed above the pressure head connecting part 6 and below the linear motor transmission rod 7 through nuts. And a pressure head 5 is arranged below the pressure head connecting part 6, and the upper part of the pressure head connecting part is arranged below the linear motor transmission rod 7 through threads.
The fixture is applied to a portable pressing instrument, the base support 8 is located on the base 9, the base support 8 is provided with an upright post 12, the upright post 12 is connected with a 14-support piece through an inner hexagonal socket, and the linear motor 10 is located on a linear motor bracket 11.
The middle of the cross beam 13 is provided with 4 threaded holes, the motor bracket 11 is provided with 4 unthreaded holes, and the cross beam 13 is fixedly connected with the linear motor bracket 11 through 4 screws. The two sides of the cross beam 13 are provided with free ports which can be movably sleeved on the upright post 12 up and down, after the upper position and the lower position of the cross beam 13 are adjusted, the cross beam 13 is fixed on the upright post 12 through a left inner hexagon screw and a right inner hexagon screw, and the middle of the cross beam 13 and the middle of the supporting piece 14 are provided with threaded holes for being connected with the adjusting knob 15 through threads.
The equivalent mechanical model of the utility model is shown in figure 3. As can be seen from fig. 3, the present invention is an optimal solution for calculating the depth of penetration for a portable penetration instrument. The non-contact displacement sensor probe 3 is fixed above the pressure head 5 and below the linear motor transmission rod 7, the target plate 2 is fixed above the target plate support 1, and the target plate support 1 is fixed on the base support 8, so that a large number of gaps and frame deformation can be avoided, the repeatability and reliability of displacement measurement are obviously improved, the rigidity of the frame and the reliability of calculating the press-in depth are effectively improved, and reliable data are provided for obtaining material mechanical parameters.
The utility model discloses specific work flow is as follows:
firstly, a pressure head 5, a pressure head connecting part 6 and a non-contact displacement sensor probe 3 are installed as shown in fig. 2, and the up-down position of the non-contact displacement sensor probe 3 is preliminarily adjusted.
Secondly, the target plate 2 is combined through the target plate bracket 1, the upper and lower positions of the target plate 2 are adjusted, and the target plate is fixed on the portable indentation instrument base bracket 7 through screws.
Thirdly, the linear motor transmission rod 7 is slowly close to the surface of the sample and is finally kept above the sample, the current position of the non-contact displacement sensor 3 is obtained through a computer, and the target plate 2 is adjusted up and down until the non-contact displacement sensor 3 works at a proper position.
Fourthly, performing press-in test, recording the displacement measured by the non-contact displacement sensor and the current passing through the linear motor 10 in the press-in process, acquiring load depth data according to the calibrated parameters of the portable press-in instrument, and providing data support for further calculating the material mechanics parameters.
The utility model discloses beneficial effect mainly shows: the position of the target plate 2 or the non-contact displacement sensor probe 3 can be adjusted up and down, so that the non-contact displacement sensor is installed at a proper position; furthermore, the mass centers of the non-contact displacement sensor probe 3 and the sensor bracket 4 are coaxial with the mass center of the linear motor transmission rod 6, so that the friction force generated by the bending moment between the linear motor transmission rod 6 and the guide rail in the motor is avoided, and the press-in load is calculated more accurately; further, the non-contact displacement sensor probe 3 is fixed above the pressure head and below the linear motor transmission rod 6, the target plate 2 is fixed above the target plate support 4, and the target plate support 4 is fixed on the base support 8, so that deformation of a large number of gaps can be avoided, the repeatability of rack rigidity and displacement measurement can be obviously improved, the press-in depth can be accurately calculated, and reliable data can be provided for obtaining material mechanical parameters.
Claims (6)
1. The mounting fixture for the non-contact displacement sensor suitable for the portable indentation instrument is characterized by comprising two target plate supports, two target plates, two sensor supports and a pressure head connecting component, wherein the upper part of each target plate support is fixed on a base support, and two sides of each target plate are respectively fixed on one target plate support; the sensor comprises a sensor support and is characterized in that a non-contact displacement sensor probe is fixed at one end of the sensor support, a pressure head connecting part is fixed at the other end of the sensor support, the sensor support is fixed above the pressure head connecting part and below a linear motor transmission rod, a pressure head is arranged below the pressure head connecting part, and the pressure head is arranged below the pressure head connecting part and below the linear motor transmission rod.
2. The mounting fixture for a non-contact displacement sensor of a portable indenter as set forth in claim 1, wherein the target plate holder has a recess formed in the upper center thereof and fixed to the screw hole of the base holder by a screw for adjusting the vertical position of the target plate on the base holder.
3. The non-contact type displacement sensor mounting fixture for a portable indenter according to claim 1 or 2, wherein the target plate holder has a light hole formed therebelow for fixing the target plate, and the target plate has a groove formed in the middle of both sides thereof and is fixed to the target plate holder by a screw.
4. The mounting fixture for a non-contact displacement sensor of a portable indenter according to claim 1 or 2, wherein the sensor holder has two threaded holes, one for fixing the non-contact displacement sensor probe and the other for fixing the indenter connection member.
5. The mounting fixture for a non-contact displacement sensor of a portable indenter as set forth in claim 1 or 2, wherein the sensor holder is fixed above the indenter attachment member and below the linear motor driving rod by a nut.
6. The mounting fixture for a non-contact displacement sensor of a portable indenter as set forth in claim 1 or 2, wherein the ram attachment member is screw-mounted above and below the linear motor drive rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920953110.8U CN210374970U (en) | 2019-06-24 | 2019-06-24 | Mounting fixture of non-contact displacement sensor suitable for portable indentation instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920953110.8U CN210374970U (en) | 2019-06-24 | 2019-06-24 | Mounting fixture of non-contact displacement sensor suitable for portable indentation instrument |
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| CN210374970U true CN210374970U (en) | 2020-04-21 |
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| CN201920953110.8U Active CN210374970U (en) | 2019-06-24 | 2019-06-24 | Mounting fixture of non-contact displacement sensor suitable for portable indentation instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260771A (en) * | 2019-06-24 | 2019-09-20 | 浙江工业大学 | The installs fixture of non-contact displacement transducer suitable for Portable press fit instrument |
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2019
- 2019-06-24 CN CN201920953110.8U patent/CN210374970U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260771A (en) * | 2019-06-24 | 2019-09-20 | 浙江工业大学 | The installs fixture of non-contact displacement transducer suitable for Portable press fit instrument |
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