CN109142052B - Precise test equipment for rigidity and elastic hysteresis effect of beryllium bronze leaf spring - Google Patents
Precise test equipment for rigidity and elastic hysteresis effect of beryllium bronze leaf spring Download PDFInfo
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- CN109142052B CN109142052B CN201810903929.3A CN201810903929A CN109142052B CN 109142052 B CN109142052 B CN 109142052B CN 201810903929 A CN201810903929 A CN 201810903929A CN 109142052 B CN109142052 B CN 109142052B
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Abstract
The invention discloses precise test equipment for rigidity and elastic hysteresis effect of a beryllium bronze leaf spring, which comprises a shock insulation table, wherein an electric Z1-direction measuring table is arranged on the shock insulation table, a high-precision digital tension and compression dynamometer is arranged on the electric Z1-direction measuring table, a spring pressure head is arranged at the bottom of the high-precision digital tension dynamometer, an objective table, a high-precision digital micrometer controller and a PC (personal computer) are arranged on the shock insulation table, an X1-Y1 two-way moving table and an X-Y-Z three-way adjustable objective sliding table are arranged on the objective table, a test piece positioning clamp is arranged on the X-Y-Z three-way adjustable objective sliding table, a high-precision digital micrometer is arranged on the X1-Y1 two-way moving table, an electric Z1-direction measuring table control panel is also arranged on the measuring table, and the device realizes precise test on the after effect of rigidity and elasticity of the beryllium bronze leaf spring, the test precision is high, can carry out continuous cycle test.
Description
Technical Field
The invention relates to the field of precision test equipment for rigidity and elastic hysteresis effect of a beryllium bronze leaf spring, in particular to precision test equipment for the rigidity and the elastic hysteresis effect of the beryllium bronze leaf spring.
Background
The beryllium bronze has excellent mechanical property, wear resistance and fatigue resistance, higher strength and hardness, excellent conductivity, corrosion resistance, low-temperature non-magnetism, impact non-sparking property and excellent processing property. The method is widely applied to national defense, aviation, instrument and instrument industries. Therefore, the research on the mechanical properties (rigidity and elastic hysteresis effect) of the beryllium bronze leaf spring is very important. The existing leaf spring testing equipment is not provided with a sensor for testing micro deformation or the sensor has insufficient testing precision, so that the micro deformation of the leaf spring after the stress unloading is difficult to measure. Most importantly, no test equipment for rigidity and elastic hysteresis effect of the beryllium bronze leaf spring exists at present.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide precise test equipment for the rigidity and the elastic hysteresis effect of the beryllium bronze leaf spring, which can precisely measure the rigidity and the elastic hysteresis effect of the beryllium bronze leaf spring.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides precise test equipment for rigidity and elastic hysteresis effect of a beryllium bronze leaf spring, which comprises a shock insulation table provided with supporting legs, wherein an electric Z1 direction measuring table is arranged on the shock insulation table, a high-precision digital tension and compression dynamometer capable of reciprocating up and down is arranged on the electric Z1 direction measuring table, a spring pressure head is fixedly arranged at the bottom of the high-precision digital tension dynamometer, an objective table is arranged below the spring pressure head, the objective table is fixedly arranged on the shock insulation table, an X1-Y1 bidirectional moving table is fixedly arranged on the objective table, an X-Y-Z three-way adjustable objective table is fixedly arranged on the X1-Y1 bidirectional moving table, a test piece positioning clamp is fixedly arranged on the X-Y-Z three-way adjustable objective table, and a high-precision digital micrometer controller and a PC are also arranged on the shock insulation table, the high-precision digital micrometer controller is electrically connected with the PC, a high-precision digital micrometer is further arranged on the X1-Y1 bidirectional mobile platform and electrically connected with the high-precision digital micrometer controller, and an electric Z1 control panel which is electrically connected with the electric Z1 is further fixedly arranged on the measuring platform.
Preferably, electronic Z1 is provided with two vertical guide rails to the measuring station, the guide rail is through setting up slider sliding connection on the guide rail has the slide, be provided with first screw seat on the slider, electronic Z1 is provided with the motor to the top of measuring station, the output shaft of motor passes through the shaft coupling and is provided with the lead screw fixed connection of second screw seat, the second screw seat passes through first screw seat with slide fixed connection, the motor with PC electric connection.
Preferably, the adjustable year thing slip table of X-Y-Z three-dimensional includes the L template, the L template has the T template through first limiting plate sliding connection, first limiting plate is fixed to be set up on the L template, the T template is provided with the set-square that can rotate through the pivot, still fixed first L type piece that is provided with on the T template, threaded connection has first positioning bolt on the first L type piece, the one end of first positioning bolt is passed first L type piece and support tightly on the circumference edge of set-square, still be provided with two first slider on the T template, two first slider is in the same place for the fixed setting of degree contained angle in the horizontal direction.
Preferably, the first sliding device comprises a horizontal support plate, the horizontal support plate is connected with a moving plate through a second limit plate in a sliding mode, the second limit plate is fixedly arranged on the horizontal support plate, a second L-shaped block is further fixedly arranged on the horizontal support plate, a second positioning bolt is connected to the second L-shaped block in a threaded mode, and one end of the second positioning bolt penetrates through the second L-shaped block and abuts against the moving plate.
Preferably, the X1-Y1 two-way mobile station includes two second sliding devices, the second sliding device includes the concave plate, be provided with the convex plate that can slide on the concave plate, the fixed stopper that is provided with on the circumference edge of concave plate, the fixed connecting block that is provided with on the circumference edge of convex plate, threaded connection has the third adjusting bolt on the stopper, the one end of third adjusting bolt is passed the stopper and is supported tightly on the connecting block, two the second sliding device is in the same place for the fixed setting of degree contained angle on the horizontal direction.
Preferably, the test piece positioning fixture comprises a flat plate, a support block is fixedly arranged at the center of the flat plate, a strip-shaped block is hinged to the support block, a spring is fixedly arranged at one end of the strip-shaped block, one end, far away from the strip-shaped block, of the spring is fixedly arranged on the flat plate, a long strip block is fixedly arranged at the other end of the strip-shaped block, far away from the strip-shaped block, and one end of the long strip block abuts against the flat plate.
The invention has the beneficial effects that: the invention realizes the precise test of the beryllium bronze leaf spring and the elastic hysteresis effect, has high test precision, can carry out continuous cycle test, can display the force value and the deformation magnitude in real time, and can adjust the force application point and the measurement point of the leaf spring test according to the actual test requirement; the test data can be read in real time, the force value of the force application point of the leaf spring and the displacement of the measurement point can be read simultaneously, and data analysis in the later period is facilitated; the testing equipment has compact structure and high testing precision, the force value testing precision is +/-0.01 gf, and the displacement testing precision is +/-0.5 mu m.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of precision test equipment for rigidity and elastic hysteresis effect of a beryllium bronze leaf spring according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of a test piece positioning fixture according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an X-Y-Z three-way adjustable load sliding table according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an X1-Y1 two-way mobile station according to an embodiment of the present invention.
Description of reference numerals:
1. electric Z1 directional measurement station; 2. a high-precision digital tension-compression dynamometer; 3. a high precision digital micrometer; 4. a test piece positioning clamp; 41. a flat plate; 42. supporting a block; 43. a long bar block; 44. a bar-shaped block; 5. an X-Y-Z three-way adjustable loading sliding table; 51. an L-shaped plate; 52. a T-shaped plate; 53. a first L-shaped block; 54. a set square; 55. a first positioning bolt; 56. a first limit plate; 57. moving the plate; 58. a horizontal support plate; 59. a second positioning bolt; 60. a second L-shaped block; 61. a second limiting plate; 6. a high precision digital micrometer controller; 7. an X1-Y1 two-way mobile station; 71. a concave plate; 72. a convex plate; 73. a limiting block; 74. a third adjusting bolt; 75. connecting blocks; 8. a spring ram; 9. electric Z1 to the measuring table control panel; 10. a PC machine; 11. provided is a vibration isolation platform.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5, a precise test device for stiffness and elastic hysteresis effect of a beryllium bronze leaf spring comprises a vibration isolation table 11 provided with supporting legs, wherein an electric Z1 direction measurement table 1 is arranged on the vibration isolation table 11, a high-precision digital tension and compression dynamometer 2 capable of reciprocating up and down is arranged on the electric Z1 direction measurement table 1, a spring pressure head 8 is fixedly arranged at the bottom of the high-precision digital tension dynamometer 2, an objective table is arranged below the spring pressure head 8 and fixedly arranged on the vibration isolation table 11, an X1-Y1 two-way moving table 7 is fixedly arranged on the objective table, an X-Y-Z three-way adjustable objective sliding table 5 is fixedly arranged on the X1-Y1 two-way moving table 7, a test piece positioning clamp 4 is fixedly arranged on the X-Y-Z three-way adjustable objective sliding table 5, still be provided with high accuracy digital micrometer controller 6 and PC 10 on the shock insulation platform 11, high accuracy digital micrometer controller 6 with PC 10 electric connection, still be provided with high accuracy digital micrometer 3 on the X1-Y1 two-way mobile station 7, high accuracy digital micrometer 3 with high accuracy digital micrometer controller 6 electric connection, electronic Z1 is still fixed being provided with rather than electric connection's electronic Z to measuring table control panel 9 to measuring table 1.
Electronic Z1 is provided with two vertical guide rails to measuring table 1 on, the guide rail is through setting up slider sliding connection on the guide rail has the slide, be provided with first screw seat on the slider, electronic Z1 is provided with the motor to measuring table 1's top, the output shaft of motor passes through the shaft coupling and is provided with the lead screw fixed connection of second screw seat, the second screw seat passes through first screw seat with slide fixed connection, the motor with PC 10 electric connection.
Adjustable year thing slip table 5 of carrying of X-Y-Z three-dimensional includes L template 51, L template 51 has T template 52 through first limiting plate 56 sliding connection, first limiting plate 56 is fixed to be set up on the L template 51, T template 52 is provided with triangle 54 that can rotate through the pivot, it is provided with first L type piece 53 still to fix on the T template 52, threaded connection has first positioning bolt 55 on the first L type piece 53, the one end of first positioning bolt 55 is passed first L type piece 53 and support tightly on the circumference edge of triangle 54, still be provided with two first slider on the T template 52, two first slider is in the same place for the fixed setting of 90 degrees contained angles in the horizontal direction.
The first sliding device comprises a horizontal support plate 58, the horizontal support plate 58 is connected with a moving plate 57 in a sliding mode through a second limit plate 61, the second limit plate 61 is fixedly arranged on the horizontal support plate 58, a second L-shaped block 60 is further fixedly arranged on the horizontal support plate 58, a second positioning bolt 59 is connected onto the second L-shaped block 60 in a threaded mode, and one end of the second positioning bolt 59 penetrates through the second L-shaped block 60 and abuts against the moving plate 57 tightly.
The X1-Y1 bidirectional mobile station 7 comprises two second sliding devices, each second sliding device comprises a concave plate 71, a convex plate 72 capable of sliding is arranged on each concave plate 71, a limiting block 73 is fixedly arranged on the circumferential edge of each concave plate 71, a connecting block 75 is fixedly arranged on the circumferential edge of each convex plate 72, a third adjusting bolt 74 is connected to each limiting block 73 in a threaded mode, one end of each third adjusting bolt 74 penetrates through each limiting block 73 and abuts against the corresponding connecting block 75, and the second sliding devices are fixedly arranged together for 90-degree included angles in the horizontal direction.
The test piece positioning clamp 4 comprises a flat plate 41, a support block 42 is fixedly arranged at the center of the flat plate 41, a strip-shaped block 44 is hinged on the support block 42, a spring is fixedly arranged at one end of the strip-shaped block 44, one end, far away from the strip-shaped block 44, of the spring is fixedly arranged on the flat plate 41, a long strip-shaped block 43 is fixedly arranged at the other end of the strip-shaped block 44, and one end, far away from the strip-shaped block 44, of the long strip-shaped block 43 is abutted to the flat plate 41.
The electric Z1 controls the slide block to move on the measuring table 1 through the motor, so as to ensure that the spring pressure head 8 moves at a constant speed in the Z direction, and the measuring speed is adjustable; constant force loading, variable load loading and cyclic loading of the leaf spring can be achieved through the controller 9 or software setting, and meanwhile the change of displacement in the loading process can be obtained.
The high-precision digital tension dynamometer 2 is used for acquiring and displaying force data in the loading process; the magnitude of each loading force can be set, so that the performance of the leaf spring can be tested under different loading force conditions; the alarm and output of the upper limit and the lower limit can be realized; the automatic data output function is realized; the high-precision digital tension dynamometer 2 has high precision and needs to be preheated for half an hour before use.
The high-precision digital micrometer 3 is used for detecting the displacement of the leaf spring in real time in the compression process of the leaf spring; the method has a plurality of measurement modes, and a proper measurement mode can be selected according to requirements; the high-precision digital micrometer 3 has higher precision and needs to be preheated for half an hour before use.
The X-Y-Z three-way adjustable loading sliding table is used for bearing a test piece positioning clamp 4, so that the test piece positioning clamp can move in three directions relative to a spring pressure head 8, and the X1-Y1 two-way moving table 7 is matched to determine the relative positions of the high-precision digital tension and compression dynamometer 2, the high-precision digital micrometer 3 and the leaf spring test piece together, so that the required leaf spring force application point and displacement measurement point are met.
High-precision digital dynamometer 2: MARK-10Series5 Series.
High-precision digital micrometer 3: LS-7600 series of Kinz.
High-precision digital micrometer controller 6: LS-7600 series of Kinz.
Electric Z1 to the measurement station control panel 9: manualESM 303.
When in use, the PC machine 10 is connected with the motor on the electric Z1 directional measuring table 1 and the high-precision digital micrometer controller 6, and can carry out data transmission and data processing; the high-precision digital micrometer 3 is electrically connected with the high-precision digital micrometer controller 6, and can be used for micro displacement measurement setting and data acquisition and transmission; the electric Z-direction measuring table control panel 9 is arranged at the lower part of the right side of the electric Z1-direction measuring table 1, is connected with a motor on the electric Z1-direction measuring table 1 through a data line, and can control the movement of the sliding plate such as starting, stopping, displacement, speed, circulation, timing and the like; the high-precision digital tension and compression dynamometer 2 is arranged on the front side of the electric Z1 facing the measuring table 1, the electric Z1 controls the electric Z1 to the measuring table control panel 9 and drives the high-precision digital tension and compression dynamometer 2 to move up and down in the Z direction towards the motor on the measuring table 1, and the force application size is displayed in real time in the measuring process; the spring pressure head 8 is arranged at the lower end of the high-precision digital tension-compression dynamometer 2 to realize the application or unloading force to the leaf spring; the X1-Y1 bidirectional mobile platform 7 is arranged on an object stage below the electric Z1 measuring platform 1, the position of a force application point of a leaf spring can be changed according to the measuring requirement, a third adjusting bolt 74 in the X1 direction and the Y1 direction is adjusted, and the displacement is adjusted by propping against a connecting block 75 by matching with a limiting block 73 in threaded connection; the X-Y-Z three-way adjustable test piece objective table 5 is arranged on an X1-Y1 two-way moving table 7, the position of a displacement measuring point of a leaf spring can be changed according to measurement requirements, a first positioning bolt 55 is adjusted in the Z direction to enable the first positioning bolt to rotate against a triangular plate 54, and the triangular plate 54 jacks up a T-shaped plate 52 to enable the T-shaped plate 52 to be lifted; adjusting the second positioning bolt 59 in the X and Y directions to move against the moving plate 57; the high-precision digital micrometer 3 is arranged on an X1-Y1 bidirectional mobile platform 7 through an adapter plate and is positioned on the front side of an X-Y-Z three-way adjustable test piece objective table 5, so that the real-time detection of the displacement of a leaf spring measuring point is realized; the test piece positioning clamp 4 is arranged on the X-Y-Z three-way adjustable test piece objective table 5 to realize positioning and clamping of the leaf spring test piece.
During testing, the high-precision digital dynamometer 2 sets a pressure limit to protect the dynamometer from overload and resets the reading. The high-precision digital micrometer 3 sets the lower edge measurement and clears the reading. The motor on the electric Z-direction electric measuring table 1 is started and the high-precision digital dynamometer 2 is raised to a safe height.
And step two, adjusting the X1-Y1 bidirectional moving table 7 and the X-Y-Z three-way adjustable object carrying sliding table 5 to zero.
And step three, adjusting the X1-Y1 bidirectional mobile station 7 to a test state, and ensuring that the spring pressure head 8 is positioned at the center of the measurement range of the high-precision digital micrometer 3.
And step four, carefully installing the leaf spring test piece below the strip block 43 of the test piece positioning clamp 4.
And step five, adjusting the X-Y-Z three-way adjustable object carrying sliding table 5 to a test state, adjusting the X-Y directional sliding table according to actual requirements to enable the spring pressure head 8 to apply force to the required position of the leaf spring, and adjusting the X1-Y1 bidirectional moving table 7 to measure the deformation of the required position of the leaf spring in a matching manner.
And step six, selecting a single-point test mode or a circulating test mode for testing.
The single point test mode test procedure is as follows:
1) after the spring pressure head 8 approaches to the leaf spring test piece, setting the loading speed and the unloading speed of the load;
2) resetting the readings of each instrument;
3) setting an upper limit of displacement and setting a required loading force value;
4) setting a data acquisition mode in a software interface of the high-precision digital micrometer;
5) clicking a start button of a software interface to start testing the elastic performance of the leaf spring test piece;
6) when the set pressure value is reached, the electric Z1 automatically stops the sliding plate on the measuring table 1, and reads the readings displayed in the high-precision digital micrometer controller 6;
7) pressing an upward button of an electric Z1 direction measuring table control panel 9, when reaching the set displacement upper limit, automatically stopping the sliding plate of the electric Z1 direction measuring table 1, clicking a stop button of a software interface, and stopping data acquisition;
8) changing the setting of the loading force value in a software interface of the high-precision digital dynamometer, and repeating the steps 4, 5 and 6 to obtain the elastic performance of the leaf spring under different load effects.
The cyclic test mode test procedure is as follows:
1) when the spring pressure head 8 approaches to a workpiece, setting the loading speed and the unloading speed of the load;
2) resetting the reading of each instrument;
3) setting an upper limit of displacement, setting cycle times, setting residence time of the upper limit and the lower limit of the cycle, and setting a required loading force value;
4) setting a data acquisition mode in a software interface of the high-precision digital micrometer;
5) clicking a start button of a software interface to start testing the elastic performance of the leaf spring test piece;
6) when the set pressure value is reached, the electric Z1 stays on the sliding plate on the measuring table 1 for the set time, the reading number displayed in the high-precision digital micrometer controller 6 is read, and after the set time is reached, the electric Z1 automatically ascends to the sliding plate on the measuring table 1 and returns to the upper limit of the displacement;
7) after the 10 times of circulation, the elastic performance of the leaf spring under the action of the cyclic load can be obtained.
The invention has the advantages that: the invention realizes the precise test of the beryllium bronze leaf spring and the elastic hysteresis effect, has high test precision, can carry out continuous cycle test, can display the force value and the deformation magnitude in real time, and can adjust the force application point and the measurement point of the leaf spring test according to the actual test requirement; the test data can be read in real time, the force value of the force application point of the leaf spring and the displacement of the measurement point can be read simultaneously, and data analysis in the later period is facilitated; the testing equipment has compact structure and high testing precision, the force value testing precision is +/-0.01 gf, and the displacement testing precision is +/-0.5 mu m.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. The precise test equipment for the rigidity and the elastic hysteresis effect of the beryllium bronze leaf spring is characterized in that: comprises a shock insulation platform (11) provided with supporting legs, wherein an electric Z1 is arranged on the shock insulation platform (11) to a measuring platform (1), an electric Z1 is arranged on the measuring platform (1) and can do vertical reciprocating motion to a high-precision digital tension-compression dynamometer (2), a spring pressure head (8) is fixedly arranged at the bottom of the high-precision digital tension dynamometer (2), an objective table is arranged below the spring pressure head (8), the objective table is fixedly arranged on the shock insulation platform (11), an X1-Y1 two-way moving platform (7) is fixedly arranged on the objective table, an X-Y-Z three-way adjustable objective sliding platform (5) is fixedly arranged on the X1-Y1 two-way moving platform (7), a test piece positioning clamp (4) is fixedly arranged on the X-Y-Z three-way adjustable objective sliding platform (5), a high-precision digital micrometer controller (6) and a PC (10) are further arranged on the shock insulation platform (11), the high-precision digital micrometer controller (6) is electrically connected with the PC (10), the X1-Y1 bidirectional mobile station (7) is also provided with a high-precision digital micrometer (3), the high-precision digital micrometer (3) is electrically connected with the high-precision digital micrometer controller (6), and the electric Z1 direction measuring table (1) is also fixedly provided with an electric Z direction measuring table control panel (9) which is electrically connected with the electric Z direction measuring table;
the X-Y-Z three-way adjustable loading sliding table (5) comprises an L-shaped plate (51), the L-shaped plate (51) is connected with a T-shaped plate (52) in a sliding way through a first limit plate (56), the first limit plate (56) is fixedly arranged on the L-shaped plate (51), the T-shaped plate (52) is provided with a triangular plate (54) which can rotate through a rotating shaft, a first L-shaped block (53) is fixedly arranged on the T-shaped plate (52), a first positioning bolt (55) is connected to the first L-shaped block (53) in a threaded manner, one end of the first positioning bolt (55) passes through the first L-shaped block (53) and is abutted against the circumferential edge of the triangular plate (54), the T-shaped plate (52) is further provided with two first sliding devices, and the two first sliding devices are fixedly arranged together in the horizontal direction at an included angle of 90 degrees.
2. The precision test equipment for the rigidity and elastic hysteresis effect of the beryllium bronze leaf spring according to claim 1, wherein the precision test equipment comprises: electronic Z1 is provided with two vertical guide rails to measuring table (1) on, the guide rail is through setting up slider sliding connection on the guide rail has the slide, be provided with first screw seat on the slider, electronic Z1 is provided with the motor to the top of measuring table (1), the output shaft of motor passes through the shaft coupling and is provided with the lead screw fixed connection of second screw seat, the second screw seat passes through first screw seat with slide fixed connection, the motor with PC (10) electric connection.
3. The precision test equipment for the rigidity and elastic hysteresis effect of the beryllium bronze leaf spring according to claim 1, wherein the precision test equipment comprises: the first sliding device comprises a horizontal support plate (58), the horizontal support plate (58) is connected with a moving plate (57) in a sliding mode through a second limiting plate (61), the second limiting plate (61) is fixedly arranged on the horizontal support plate (58), a second L-shaped block (60) is further fixedly arranged on the horizontal support plate (58), a second positioning bolt (59) is connected to the second L-shaped block (60) in a threaded mode, and one end of the second positioning bolt (59) penetrates through the second L-shaped block (60) and abuts against the moving plate (57).
4. The precision test equipment for the rigidity and elastic hysteresis effect of the beryllium bronze leaf spring according to claim 1, wherein the precision test equipment comprises: X1-Y1 bidirectional mobile platform (7) includes two second slider, second slider includes concave plate (71), be provided with on concave plate (71) can gliding flange (72), the fixed stopper (73) that is provided with on the circumference edge of concave plate (71), the fixed connecting block (75) that is provided with on the circumference edge of flange (72), threaded connection has third adjusting bolt (74) on stopper (73), the one end of third adjusting bolt (74) is passed stopper (73) and support tightly on connecting block (75), two second slider is in the same place for the fixed setting of 90 degrees contained angles on the horizontal direction.
5. The precision test equipment for the rigidity and elastic hysteresis effect of the beryllium bronze leaf spring according to claim 1, wherein the precision test equipment comprises: the test piece positioning clamp (4) comprises a flat plate (41), a support block (42) is fixedly arranged at the center of the flat plate (41), a strip-shaped block (44) is hinged to the support block (42), a spring is fixedly arranged at one end of the strip-shaped block (44), one end, far away from the strip-shaped block (44), of the spring is fixedly arranged on the flat plate (41), a long strip block (43) is fixedly arranged at the other end of the strip-shaped block (44), and one end, far away from the strip-shaped block (44), of the long strip block (43) is tightly abutted to the flat plate (41).
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| CN201810903929.3A CN109142052B (en) | 2018-08-09 | 2018-08-09 | Precise test equipment for rigidity and elastic hysteresis effect of beryllium bronze leaf spring |
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| CN109142052B true CN109142052B (en) | 2021-02-02 |
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| CN202547836U (en) * | 2011-12-30 | 2012-11-21 | 中国航天科技集团公司第九研究院七一0七厂 | Conductive slip ring brush pressure detection device |
| CN103364182A (en) * | 2013-06-26 | 2013-10-23 | 浙江理工大学 | Device for testing rigidity of plate spring in high-temperature environment |
| CN205015224U (en) * | 2015-08-14 | 2016-02-03 | 徐先平 | Accurate spring leaf rigidity measuring apparatu |
| CN107655601A (en) * | 2016-07-25 | 2018-02-02 | 成都太微电子科技有限公司 | A kind of measurement apparatus of screen work spring clip holding force |
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| CN109142052A (en) | 2019-01-04 |
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