CN110260771A - The installs fixture of non-contact displacement transducer suitable for Portable press fit instrument - Google Patents
The installs fixture of non-contact displacement transducer suitable for Portable press fit instrument Download PDFInfo
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- CN110260771A CN110260771A CN201910549341.7A CN201910549341A CN110260771A CN 110260771 A CN110260771 A CN 110260771A CN 201910549341 A CN201910549341 A CN 201910549341A CN 110260771 A CN110260771 A CN 110260771A
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 49
- 239000000523 sample Substances 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000007373 indentation Methods 0.000 abstract description 17
- 239000000463 material Substances 0.000 abstract description 7
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
一种适用于便携式压入仪的非接触式位移传感器的安装夹具，目标板支架有两个，目标板支架上方固定在底座支架上，目标板两侧分别固定在一个目标板支架上面；传感器支架一端固定非接触式位移传感器探头，传感器支架另一端固定压头连接部件，传感器支架固定在压头连接部件上方与直线电机传动杆下方，压头连接部件下方装有压头，压头连接部件上方安装在直线电机传动杆下方。本发明把目标板固定在目标板支架上方，目标板支架固定在底座支架上，非接触式位移传感器探头安装在压头连接部件上方与直线电机传动杆下方，可避免不必要的安装间隙，显著提升位移测量的重复性与精确性，提高机架刚度，精确测量压入深度，为进一步计算材料力学性提供可靠数据。
An installation fixture suitable for a non-contact displacement sensor of a portable press-in instrument, there are two target plate brackets, the upper part of the target plate bracket is fixed on a base bracket, and the two sides of the target plate are respectively fixed on a target plate bracket; the sensor bracket One end of the non-contact displacement sensor probe is fixed, and the other end of the sensor bracket is fixed with the indenter connecting part. The sensor bracket is fixed above the indenter connecting part and below the linear motor transmission rod. Installed under the linear motor drive rod. In the present invention, the target board is fixed above the target board bracket, the target board bracket is fixed on the base bracket, and the non-contact displacement sensor probe is installed above the indenter connecting part and below the linear motor transmission rod, which can avoid unnecessary installation gaps, and significantly Improve the repeatability and accuracy of displacement measurement, improve the rigidity of the frame, accurately measure the indentation depth, and provide reliable data for further calculation of material mechanics.
Description
技术领域technical field
本发明涉及到便携式压入仪上位移传感器的安装，尤其适用于非接触式位移传感器的安装，所述非接触位移传感器包括电涡流位移传感器、电容位移传感器。The invention relates to the installation of a displacement sensor on a portable indenter, and is especially suitable for the installation of a non-contact displacement sensor. The non-contact displacement sensor includes an eddy current displacement sensor and a capacitive displacement sensor.
背景技术Background technique
压入载荷与压入深度是仪器化压入技术中两个关键参数，直接影响计算材料力学参数的精确性，因此需要准确测量。在基于直线电机驱动的便携式压入仪中，若使用直线电机内部集成光栅尺测量压入深度，必然会引入机架上较多间隙与直线电机传动杆上其他部件间隙的形变量，从而给压入深度的计算带来较大误差。将非接触式位移传感器探头与目标板安装在合适位置可消除大量间隙。因此，可使用非接触式位移传感器测量压入深度。在便携式压入仪中，将非接触式位移传感器探头与目标板安装不同位置将显著影响测量压入深度的可靠性。Indentation load and indentation depth are two key parameters in instrumented indentation technology, which directly affect the accuracy of calculating the mechanical parameters of materials, so accurate measurement is required. In a portable indentation instrument driven by a linear motor, if the integrated grating ruler inside the linear motor is used to measure the indentation depth, it will inevitably introduce more gaps on the frame and the deformation of the gaps between other components on the linear motor drive rod, thereby giving pressure The calculation of the penetration depth brings a large error. Mounting the non-contact displacement sensor probe in place with the target plate eliminates a lot of gaps. Therefore, the indentation depth can be measured using a non-contact displacement sensor. In a portable indenter, installing the non-contact displacement sensor probe in a different position than the target plate will significantly affect the reliability of the indentation depth measurement.
发明内容SUMMARY OF THE INVENTION
为了克服已有位移测量方式的可靠性较差的不足,本发明提供了一种适用于便携式压入仪的非接触式位移传感器的安装夹具，把目标板固定在目标板支架上方，目标板支架固定在底座支架上，非接触式位移传感器探头安装在压头连接部件上方与直线电机传动杆下方，可避免不必要的安装间隙，进而显著提升位移测量的重复性与精确性，提高机架刚度，精确测量压入深度，为进一步计算材料力学性提供可靠数据。In order to overcome the disadvantage of poor reliability of the existing displacement measurement methods, the present invention provides a mounting fixture for a non-contact displacement sensor of a portable indenter, which fixes the target board above the target board support, and the target board support Fixed on the base bracket, the non-contact displacement sensor probe is installed above the indenter connecting part and below the linear motor drive rod, which can avoid unnecessary installation gaps, thereby significantly improving the repeatability and accuracy of displacement measurement, and improving the rigidity of the frame , accurately measure the indentation depth, and provide reliable data for further calculation of material mechanical properties.
本发明解决其技术问题所采用的技术方案是：The technical scheme adopted by the present invention to solve its technical problems is:
一种适用于便携式压入仪的非接触式位移传感器的安装夹具，所述夹具包括目标板支架、目标板、传感器支架与压头连接部件，所述目标板之间有两个，所述目标板支架上方固定在底座支架上，所述目标板两侧分别固定在一个目标板支架上面；所述传感器支架一端固定非接触式位移传感器探头，所述传感器支架另一端固定压头连接部件，所述传感器支架固定在压头连接部件上方与直线电机传动杆下方，所述压头连接部件下方装有压头，所述压头连接部件上方安装在直线电机传动杆下方。An installation fixture suitable for a non-contact displacement sensor of a portable indenter, the fixture comprises a target plate bracket, a target plate, a sensor bracket and an indenter connecting part, there are two between the target plates, the target plate The top of the plate bracket is fixed on the base bracket, and the two sides of the target plate are respectively fixed on a target plate bracket; one end of the sensor bracket is fixed with a non-contact displacement sensor probe, and the other end of the sensor bracket is fixed with a pressure head connecting part, so The sensor bracket is fixed above the indenter connecting part and below the linear motor transmission rod, the indenter is installed under the indenter connection part, and the upper part of the indenter connection part is installed under the linear motor transmission rod.
进一步，所述目标板支架上方中间开有凹槽，通过螺钉固定在底座支架的螺纹孔上，用于调节目标板在底座支架上的上下位置。Further, a groove is formed in the middle of the upper part of the target board support, which is fixed on the threaded hole of the base support by screws, and is used to adjust the upper and lower positions of the target board on the base support.
再进一步，所述目标板支架下方开有光孔，用于固定目标板，所述目标板两侧中间开有凹槽，通过螺钉固定在目标板支架上面。Still further, light holes are formed under the target board support for fixing the target board, and grooves are formed in the middle of both sides of the target board, which are fixed on the target board support by screws.
更进一步，所述传感器支架开有两个螺纹孔，一个用于固定非接触式位移传感器探头，另一个用于固定压头连接部件。Furthermore, the sensor bracket is provided with two threaded holes, one for fixing the non-contact displacement sensor probe, and the other for fixing the indenter connecting part.
优选的，所述传感器支架通过螺母固定在压头连接部件上方与直线电机传动杆下方。Preferably, the sensor bracket is fixed above the indenter connecting member and below the linear motor transmission rod through a nut.
所述压头连接部件上方通过螺纹安装在直线电机传动杆下方。The upper part of the indenter connecting part is installed under the linear motor transmission rod through threads.
本发明有益效果主要表现在：可上下调节目标板和非接触式位移传感器探头的位置，使非接触式位移传感器安装在合适的位置；进一步，将非接触式位移传感器探头和传感器支架的质心与直线电机传动杆质心同轴，避免了由于直线电机传动杆与电机内部导轨之间的弯矩产生的摩擦力，从而更精确计算压入载荷；进一步，将非接触式位移传感器探头固定在压头上方与直线电机传动杆下方，目标板固定在目标板支架上方，目标板支架固定在底座支架上，可避免大量间隙形变，显著提高机架刚度与位移测量的重复性，进而准确计算压入深度，为获取材料力学参数提供可靠数据。The beneficial effects of the invention are mainly manifested in: the position of the target board and the probe of the non-contact displacement sensor can be adjusted up and down, so that the non-contact displacement sensor is installed in a suitable position; The center of mass of the linear motor drive rod is coaxial, which avoids the friction force caused by the bending moment between the linear motor drive rod and the inner guide rail of the motor, so that the pressing load can be calculated more accurately; further, the non-contact displacement sensor probe is fixed on the indenter Above and below the linear motor drive rod, the target plate is fixed above the target plate bracket, and the target plate bracket is fixed on the base bracket, which can avoid a lot of gap deformation, significantly improve the repeatability of the frame stiffness and displacement measurement, and then accurately calculate the indentation depth , providing reliable data for obtaining material mechanical parameters.
附图说明Description of drawings
图1是便携式压入仪的示意图，其中，1是目标板支架，2目标板，3是非接触式位移传感器探头，4是传感器支架，5是压头，6是压头连接部件，7是直线电机传动杆，8是底座支架，9是底座，10是直线电机，11是直线电机托架，12是立柱，13是横梁，14是支撑件，15是调节旋钮。Figure 1 is a schematic diagram of a portable indenter, wherein 1 is a target board holder, 2 is a target board, 3 is a non-contact displacement sensor probe, 4 is a sensor holder, 5 is an indenter, 6 is an indenter connecting part, and 7 is a straight line Motor transmission rod, 8 is the base bracket, 9 is the base, 10 is the linear motor, 11 is the linear motor bracket, 12 is the column, 13 is the beam, 14 is the support piece, and 15 is the adjustment knob.
图2是适用于便携式压入仪的非接触式位移传感器的安装夹具的轴视图。Figure 2 is an axial view of a mounting jig for a non-contact displacement sensor suitable for a portable indenter.
图3是目标板支架固定目标板的示意图。FIG. 3 is a schematic diagram of the target board bracket fixing the target board.
图4是本发明在便携式式压入仪中安装等效力学模型图，其S是试样刚度，KI是压头刚度，K杆是直线电机传动杆7刚度，Ks是电机内部悬挂弹簧刚度，K活是电机托架11与直线电机10的等效刚度，δ间1是直线电机托架11与直线电机7之间的间隙、电机托架11与横梁13间隙、横梁13与旋钮15之间间隙之和，K梁是横梁13与支撑14的等效刚度，K柱是立柱12的刚度，δ间2是便携式压入仪底座支架8与底座9之间间隙。Fig. 4 is the equivalent mechanics model diagram of the present invention installed in the portable indenter, where S is the stiffness of the sample, K I is the stiffness of the indenter, K rod is the stiffness of the linear motor drive rod 7, and K s is the internal suspension spring of the motor Rigidity , K is the equivalent stiffness of the motor bracket 11 and the linear motor 10, δ 1 is the gap between the linear motor bracket 11 and the linear motor 7, the gap between the motor bracket 11 and the beam 13, the beam 13 and the knob 15 The sum of the gaps between them, the K beam is the equivalent stiffness of the beam 13 and the support 14 , the K column is the stiffness of the column 12 , and the delta 2 is the gap between the base bracket 8 and the base 9 of the portable indenter.
图5是目标板支架的轴视图。Figure 5 is an axial view of the target plate holder.
图6是目标板的轴视图。Figure 6 is an axial view of the target plate.
具体实施方式Detailed ways
下面结合附图对本发明作进一步描述。The present invention will be further described below in conjunction with the accompanying drawings.
参照图1～图6，一种适用于便携式压入仪的非接触式位移传感器的安装夹具，包括两个目标板支架1、目标板2、传感器支架4与压头连接部件6，所述目标板支架1上方中间开有凹槽，通过螺钉固定在底座支架8的螺纹孔上，用于调节目标板2上下位置；下方开有光孔，用于固定目标板2。所述目标板2两侧中间开有凹槽，通过螺钉固定在目标板支架1上面。所述传感器支架4开有两个螺纹孔，一个用于固定非接触式位移传感器探头3，另一个用于固定压头连接部件6。所述传感器支架4通过螺母固定在压头连接部件6上方与直线电机传动杆7下方。所述压头连接部件6下方装有压头5，上方通过螺纹安装在直线电机传动杆7下方。Referring to FIGS. 1 to 6 , a mounting fixture for a non-contact displacement sensor suitable for a portable indenter includes two target board brackets 1 , a target board 2 , a sensor bracket 4 and an indenter connecting part 6 . There is a groove in the upper middle of the plate bracket 1, which is fixed on the threaded hole of the base bracket 8 by screws to adjust the upper and lower position of the target plate 2; The target board 2 has grooves in the middle on both sides, and is fixed on the target board support 1 by screws. The sensor bracket 4 has two threaded holes, one for fixing the non-contact displacement sensor probe 3 and the other for fixing the indenter connecting part 6 . The sensor bracket 4 is fixed above the indenter connecting part 6 and below the linear motor transmission rod 7 by nuts. The indenter 5 is installed under the indenter connecting part 6 , and the upper part is installed under the linear motor transmission rod 7 through threads.
将所述夹具应用于便携式压入仪，所述底座支架8位于底座9上，所述底座支架8上设有立柱12，所述立柱12通过内六角与14支撑件连接，所述直线电机10位于直线电机托架11上。The fixture is applied to the portable press-in instrument, the base bracket 8 is located on the base 9, the base bracket 8 is provided with a column 12, the column 12 is connected with the support member 14 through the inner hexagon, and the linear motor 10 On the linear motor bracket 11.
所述横梁13中部开有4个螺纹孔，电机托架11上开有4个光孔，通过4个螺丝将横梁13与直线电机托架11固定连接。所述横梁13两侧开有自由端口，可上下活动地套装在立柱12上，调整好横梁13上下位置后，通过左右两个内六角螺钉将横梁13固定在立柱12上，所述横梁13中间与支撑件14中间开有螺纹孔，用于通过螺纹连接调节旋钮15上。The middle of the beam 13 is provided with 4 threaded holes, and the motor bracket 11 is provided with 4 light holes. The beam 13 and the linear motor bracket 11 are fixedly connected by 4 screws. There are free ports on both sides of the beam 13, which can be movably sleeved on the column 12 up and down. After adjusting the upper and lower positions of the beam 13, the beam 13 is fixed on the column 12 by two left and right hexagon socket screws. The middle of the beam 13 A threaded hole is opened between the support member 14 and the adjusting knob 15 through a threaded connection.
本发明等效力学模型如图3所示。从图3可知，针对便携式压入仪，本发明是计算压入深度的最优解决方案。通过将非接触式位移传感器探头3固定在压头5上方与直线电机传动杆7下方，目标板2固定在目标板支架1上方，目标板支架1固定在底座支架8上，可避免大量间隙与机架形变，显著提高位移测量的重复性与可靠性，进而有效提高机架刚度与计算压入深度的可靠性，为获取材料力学参数提供可靠数据。The equivalent mechanics model of the present invention is shown in FIG. 3 . As can be seen from FIG. 3 , for the portable indentation instrument, the present invention is the optimal solution for calculating the indentation depth. By fixing the non-contact displacement sensor probe 3 above the indenter 5 and below the linear motor drive rod 7, the target board 2 is fixed above the target board support 1, and the target board support 1 is fixed on the base support 8, which can avoid a lot of gaps and The deformation of the frame can significantly improve the repeatability and reliability of the displacement measurement, thereby effectively improving the rigidity of the frame and the reliability of calculating the indentation depth, and providing reliable data for obtaining material mechanical parameters.
本发明具体工作流程如下：The concrete work flow of the present invention is as follows:
第一，按照图2所示安装好压头5与压头连接部件6与非接触式位移传感器探头3，初步调节非接触式位移传感器探头3上下位置。First, install the indenter 5 , the indenter connecting part 6 and the non-contact displacement sensor probe 3 as shown in FIG. 2 , and preliminarily adjust the upper and lower positions of the non-contact displacement sensor probe 3 .
第二，将目标板2通过目标板支架1组合，调节目标板2的上下位置，通过螺钉固定在便携式压入仪底座支架7上。Second, the target board 2 is assembled through the target board bracket 1, the upper and lower positions of the target board 2 are adjusted, and the target board 2 is fixed on the base bracket 7 of the portable press-in instrument by screws.
第三，使直线电机传动杆7缓慢靠近试样表面，最终保持在试样上方，通过计算机获取非接触式位移传感器3的当前位置，上下调节目标板2，直至非接触式位移传感器3工作在合适位置。Third, make the linear motor drive rod 7 slowly approach the surface of the sample, and finally keep it above the sample, obtain the current position of the non-contact displacement sensor 3 through the computer, and adjust the target plate 2 up and down until the non-contact displacement sensor 3 works at the suitable location.
第四，进行压入测试，记录压入过程中非接触式位移传感器测得位移量与通过直线电机10的电流，根据已校准的便携式压入仪的参数，获取载荷深度数据，为进一步计算出材料力学参量提供数据支撑。Fourth, carry out the indentation test, record the displacement measured by the non-contact displacement sensor and the current passing through the linear motor 10 during the indentation process, and obtain the load depth data according to the parameters of the calibrated portable indentation instrument for further calculation. Material mechanics parameters provide data support.
本发明有益效果主要表现在：可上下调节目标板2或非接触式位移传感器探头3的位置，使非接触式位移传感器安装在合适的位置；进一步，将非接触式位移传感器探头3和传感器支架4的质心与直线电机传动杆6的质心同轴，避免由于直线电机传动杆6与电机内部导轨之间的弯矩产生的摩擦力，从而更精确计算压入载荷；进一步，将非接触式位移传感器探头3固定在压头上方与直线电机传动杆6下方，目标板2固定在目标板支架4上方，目标板支架4固定在底座支架8上，可避免大量间隙的形变量，显著提高机架刚度与位移测量的重复性，进而准确计算压入深度，为获取材料力学参数提供可靠数据。The beneficial effects of the present invention are mainly manifested in: the position of the target board 2 or the non-contact displacement sensor probe 3 can be adjusted up and down, so that the non-contact displacement sensor can be installed in a suitable position; further, the non-contact displacement sensor probe 3 and the sensor bracket are The center of mass of 4 is coaxial with the center of mass of the linear motor transmission rod 6 to avoid frictional force caused by the bending moment between the linear motor transmission rod 6 and the inner guide rail of the motor, so as to calculate the pressing load more accurately; further, the non-contact displacement The sensor probe 3 is fixed above the indenter and below the linear motor transmission rod 6, the target plate 2 is fixed above the target plate bracket 4, and the target plate bracket 4 is fixed on the base bracket 8, which can avoid a large amount of deformation of the gap and significantly improve the rack. The repeatability of stiffness and displacement measurement, and then the accurate calculation of the indentation depth, provides reliable data for obtaining material mechanical parameters.
Claims (6)
Priority Applications (1)
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