Floating detection mechanism for electronic universal testing machine

Abstract

A floating detection mechanism for an electronic universal testing machine comprises a base, a bottom layer linear guide rail pair is arranged on the base, and a bottom layer sliding seat is arranged on the bottom layer linear guide rail pair; a middle-layer linear guide rail pair is arranged on the bottom-layer sliding seat, a middle-layer sliding seat is arranged on the middle-layer linear guide rail pair, and two first spring mechanisms are arranged on the bottom-layer sliding seat and on the left side and the right side of the middle-layer sliding seat at intervals in the front-back direction; two second spring mechanisms are arranged on the middle-layer sliding seat and the front side and the rear side of the top-layer sliding seat at intervals in the left-right direction. According to the utility model, the structure of motor driving and ball screw transmission is adopted, the two sets of linear guide rail pairs, the spring mechanism and the contact type displacement sensor can be used for conveniently detecting the free floating displacement of a spring and other similar flexible materials in the transverse direction and the longitudinal direction after being subjected to vertical pressure loading, and the ball screw and the linear guide rail pairs ensure high-precision movement.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical field especially, relates to test device, and particularly is a kind of floating detection mechanism for electronic universal testing machine. BACKGROUND

[0002] In the field of material mechanical property testing, electronic universal testing machine is a widely used equipment for measuring the mechanical properties of materials. The deformation characteristics of flexible materials such as springs in different directions are important indicators for evaluating their performance. However, in the prior art, the electronic universal testing machine can only measure the floating displacement of the material in a single direction when subjected to vertical loading force, and it is difficult to simultaneously detect the free floating displacement of the material in the transverse and longitudinal directions. The test results are not comprehensive enough to truly reflect the actual performance of the material. SUMMARY

[0003] The utility model aims at providing a kind of floating detection mechanism for electronic universal testing machine, the floating detection mechanism for electronic universal testing machine in prior art solves the technical problem that tester is difficult to simultaneously detect the free floating displacement of material in transverse and longitudinal directions.

[0004] The utility model relates to a kind of floating detection mechanism for electronic universal testing machine, including base, bottom layer linear guide pair is arranged on the base, and motor, bottom layer sliding seat is arranged on bottom layer linear guide pair, the output shaft of motor is connected with ball screw, first bearing seat and second bearing seat are respectively arranged on the base, the both ends of ball screw, nut seat is arranged on ball screw, and nut seat is connected with bottom layer sliding seat;

[0005] Bottom layer sliding seat is arranged with middle layer linear guide pair, middle layer linear guide pair is parallel to bottom layer linear guide pair, middle layer sliding seat is arranged on middle layer linear guide pair, two first spring mechanisms are respectively arranged on bottom layer sliding seat, left and right sides of middle layer sliding seat along front and back directions, the movable end of first spring mechanism is connected with the side surface of middle layer sliding seat, first support is arranged on middle layer sliding seat, first contact type displacement sensor is arranged on first support, first fixed block is arranged on bottom layer sliding seat, and first fixed block is located in the right of first contact type displacement sensor, and the measurement end of first contact type displacement sensor extends to the right and contacts with first fixed block.

[0006] The middle layer sliding seat is provided with a top layer linear guide rail pair, the top layer linear guide rail pair is perpendicular to the bottom layer linear guide rail pair, the top layer linear guide rail pair is provided with a top layer sliding seat, the top layer sliding seat is provided with a sample mounting seat, two second spring mechanisms are arranged on the middle layer sliding seat and the front and back sides of the top layer sliding seat in the left and right directions, the movable end of the second spring mechanism is connected with the side surface of the top layer sliding seat, the top layer sliding seat is provided with a second support, the second support is provided with a second contact type displacement sensor, the middle layer sliding seat is provided with a second fixed block, the second fixed block is located in front of the second contact type displacement sensor, and the measurement end of the second contact type displacement sensor extends forward and contacts the second fixed block.

[0007] Further, any one first spring mechanism comprises a first spring support seat fixedly connected with the bottom layer sliding seat, a first sliding guide shaft is arranged in the first spring support seat, a first compression spring is arranged between the first sliding guide shaft and the first spring support seat, and a first hard limiting block for limiting the middle layer sliding seat is arranged on the first spring support seat.

[0008] Further, any one second spring mechanism comprises a second spring support seat fixedly connected with the middle layer sliding seat, a second sliding guide shaft is arranged in the second spring support seat, a second compression spring is arranged between the second sliding guide shaft and the second spring support seat, and a second hard limiting block for limiting the top layer sliding seat is arranged on the second spring support seat.

[0009] Further, the sample mounting seat is connected with the top layer sliding seat through a positioning pin.

[0010] Further, the first bearing seat and the second bearing seat are respectively provided with tapered roller bearings and deep groove ball bearings.

[0011] Compared with the prior art, the utility model has the advantages of positive and obvious effects. The utility model discloses a floating detection mechanism for an electronic universal testing machine, which has compact structure, high detection precision, small error and convenient operation. The mechanism is driven by a motor and transmitted by a ball screw, and can conveniently detect the displacement of flexible materials such as springs under vertical pressure loading in the horizontal and vertical directions. The ball screw and the linear guide rail pair ensure high-precision movement. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a perspective view of the floating detection mechanism for the electronic universal testing machine.

[0013] Figure 2 It is a front view and sectional view of the floating detection mechanism for the electronic universal testing machine.

[0014] Figure 3The utility model discloses a side view schematic drawing of a floating detection mechanism for an electronic universal testing machine.

[0015] Figure 4 The utility model discloses a top view schematic drawing of a floating detection mechanism for an electronic universal testing machine. DETAILED DESCRIPTION

[0016] The utility model makes further description in combination with the embodiment, but the utility model is not limited to the embodiment, and all the similar changes of the utility model should be included in the protection scope of the utility model, the use of upper, lower, front, back, left, right, middle, inside, outside and the like direction in the utility model is only for the convenience of clear description, and not the restriction of the technical scheme of the utility model.

[0017] As Figures 1-4 The utility model discloses a floating detection mechanism for an electronic universal testing machine, including base 1, be provided with bottom layer linear guide vice 34 and motor 2 on base 1, be provided with bottom layer sliding seat 11 on bottom layer linear guide vice 34, and the output shaft of motor 2 is connected with ball screw 8, and is provided with first bearing seat 6 and second bearing seat 27 on base 1, the both ends of ball screw 8 respectively, is provided with nut seat 9 on ball screw 8, and nut seat 9 is connected with bottom layer sliding seat 11;

[0018] Be provided with middle layer linear guide vice 12 on bottom layer sliding seat 11, and middle layer linear guide vice 12 is parallel to bottom layer linear guide vice 34, be provided with middle layer sliding seat 14 on middle layer linear guide vice 12, and is provided with two first spring mechanism along the front and back direction interval on bottom layer sliding seat 11, the left and right sides of middle layer sliding seat 14 respectively, and the movable end of first spring mechanism is connected with the side of middle layer sliding seat 14, be provided with first support (not shown in the drawing) on middle layer sliding seat 14, be provided with first contact type displacement sensor 31 on first support, be provided with first fixed block (not shown in the drawing) on bottom layer sliding seat 11, and the first fixed block is located the right side of first contact type displacement sensor 31, and the measurement end of first contact type displacement sensor 31 extends to the right and contacts with first fixed block;

[0019] The middle layer sliding seat 14 is provided with a top layer linear guide rail pair 17, which is perpendicular to the bottom layer linear guide rail pair 34, and the top layer linear guide rail pair 17 is provided with a top layer sliding seat 16, and the top layer sliding seat 16 is provided with a sample mounting seat 18, and two second spring mechanisms are arranged on the middle layer sliding seat 14 and on the front and back sides of the top layer sliding seat 16 in the left and right directions, respectively, and the movable end of the second spring mechanism is connected with the side surface of the top layer sliding seat 16, and the top layer sliding seat 16 is provided with a second support 30, and the second support 30 is provided with a second contact type displacement sensor 36, and the middle layer sliding seat 14 is provided with a second fixed block 29, and the second fixed block 29 is located in front of the second contact type displacement sensor 36, and the measurement end of the second contact type displacement sensor 36 extends forward and contacts the second fixed block 29.

[0020] Further, any one of the first spring mechanisms each includes a first spring support seat 20 fixedly connected with the bottom layer sliding seat 11, a first sliding guide shaft 22 is arranged in the first spring support seat 20, a first compression spring 19 is arranged between the first sliding guide shaft 22 and the first spring support seat 20, and the first spring support seat 20 is provided with a first hard limit block 25 for limiting the middle layer sliding seat 14.

[0021] Further, any one of the second spring mechanisms each includes a second spring support seat fixedly connected with the middle layer sliding seat 14, a second sliding guide shaft is arranged in the second spring support seat, a second compression spring is arranged between the second sliding guide shaft and the second spring support seat, and the second spring support seat is provided with a second hard limit block for limiting the top layer sliding seat 16.

[0022] Further, the sample mounting seat 18 is connected with the top layer sliding seat 16 through a positioning pin 15.

[0023] Further, the first bearing seat 6 and the second bearing seat 27 are respectively provided with a tapered roller bearing 7 and a deep groove ball bearing 28.

[0024] Specifically, the motor 2 is provided with a speed reducer, the speed reducer is fixed on the speed reducer seat 3, and the output shaft of the speed reducer is connected with the ball screw 8 through a shaft coupling 4.

[0025] Specifically, the specific structure and principle of the linear guide rail pair, the motor 2, the ball screw 8, the contact type displacement sensor and other components in the embodiment, and other unexplained parts all adopt the known solutions in the prior art, and those skilled in the art are all aware of this, and will not be described here.

[0026] The working principle of the embodiment is as follows:

[0027] Start motor 2, motor 2 through the ball screw 8, nut seat 9 drive bottom layer sliding seat 11 along the bottom layer linear guide vice 34 moves, transports the test sample mounting seat 18 to the test area outside.Install the sample to be measured to the test sample mounting seat 18, start the speed regulating motor 2 again, move the bottom layer sliding seat 11 along the bottom layer linear guide vice 34 through the ball screw 8 drive, move the sample to be measured to the test area.Start vertical pressure loading device, apply pressure to the sample to be measured, when the sample to be measured deforms, the middle layer sliding seat 14 acts on the first sliding guide shaft 22, the first compression spring 19 on the middle layer linear guide vice 12, realizes the transverse free floating, the top layer sliding seat 16 acts on the second sliding guide shaft 22, the second compression spring 19 on the top layer linear guide vice 17, realizes the longitudinal free floating.The first contact type displacement sensor 31 and the second contact type displacement sensor 36 act on the first fixed block, the second fixed block 29 respectively, detect the displacement of the middle layer sliding seat 14, the top layer sliding seat 16 respectively, record the deformation data of the sample to be measured.The first hard limit block 25, the second hard limit block respectively ensure that the floating range of the middle layer sliding seat 14, the top layer sliding seat 16 is controllable, avoids over-limit.After pressure loading, unload pressure, stop data acquisition.Start motor 2, drive test sample mounting seat 18 to move out of the test area, take out the sample to be measured and mark well.

[0028] The utility model discloses a configuration in electronic universal testing machine, compact structure, high detection precision, small error, convenient operation adopts motor drive, ball screw drive's structure, through two sets of linear guide vice, spring mechanism and contact type displacement sensor can conveniently detect the displacement of spring and similar flexible material after being subjected to vertical pressure loading, ball screw and linear guide vice ensure high-precision movement.

Claims

1. A floating detection mechanism for an electronic universal testing machine, characterized by, The base is provided with a bottom linear guide pair and a motor, the bottom linear guide pair is provided with a bottom sliding seat, the output shaft of the motor is connected with a ball screw, the first bearing seat and the second bearing seat are arranged on the base and at both ends of the ball screw respectively, the ball screw is provided with a nut seat, and the nut seat is connected with the bottom sliding seat; The bottom sliding seat is provided with a middle linear guide pair, the middle linear guide pair is parallel to the bottom linear guide pair, the middle linear guide pair is provided with a middle sliding seat, the first spring mechanisms are arranged on the bottom sliding seat and at the left and right sides of the middle sliding seat in the front and back directions, the movable ends of the first spring mechanisms are connected with the side surfaces of the middle sliding seat, the first support is arranged on the middle sliding seat, the first contact type displacement sensor is arranged on the first support, the first fixed block is arranged on the bottom sliding seat and located to the right of the first contact type displacement sensor, and the measurement end of the first contact type displacement sensor extends to the right and contacts the first fixed block. The middle sliding seat is provided with a top linear guide pair, the top linear guide pair is perpendicular to the bottom linear guide pair, the top linear guide pair is provided with a top sliding seat, the sample mounting seat is arranged on the top sliding seat, the second spring mechanisms are arranged on the middle sliding seat and at the front and back sides of the top sliding seat in the left and right directions, the movable ends of the second spring mechanisms are connected with the side surfaces of the top sliding seat, the second support is arranged on the top sliding seat, the second contact type displacement sensor is arranged on the second support, the second fixed block is arranged on the middle sliding seat and located to the front of the second contact type displacement sensor, and the measurement end of the second contact type displacement sensor extends to the front and contacts the second fixed block.

2. The floating detection mechanism for an electronic universal testing machine according to claim 1, wherein, Each of the first spring mechanisms comprises a first spring support fixedly connected with the bottom sliding seat, a first sliding guide shaft is arranged in the first spring support, a first compression spring is arranged between the first sliding guide shaft and the first spring support, and a first hard limiting block for limiting the middle sliding seat is arranged on the first spring support.

3. The floating detection mechanism for an electronic universal testing machine according to claim 1, wherein, Each of the second spring mechanisms comprises a second spring support fixedly connected with the middle sliding seat, a second sliding guide shaft is arranged in the second spring support, a second compression spring is arranged between the second sliding guide shaft and the second spring support, and a second hard limiting block for limiting the top sliding seat is arranged on the second spring support.

4. The floating detection mechanism for an electronic universal testing machine according to claim 1, wherein, The sample mounting seat is connected with the top sliding seat through a positioning pin.

5. The floating detection mechanism for an electronic universal testing machine according to claim 1, wherein, The first bearing seat and the second bearing seat are respectively provided with tapered roller bearings and deep groove ball bearings.

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