CN210570333U

CN210570333U - Automatic sample centering device of contact type measuring tape instrument

Info

Publication number: CN210570333U
Application number: CN201921783233.8U
Authority: CN
Inventors: 孙永革; 范世勇; 唐炫宇
Original assignee: Shenyang Precede Scientific Instruments Equipment Co ltd
Current assignee: Shenyang Precede Scientific Instruments Equipment Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-05-19
Anticipated expiration: 2029-10-23

Abstract

The utility model relates to a contact type measuring scale appearance sample automatic centering device, the base plate is installed in the measuring scale appearance, one end of follow-up lever A is hinged on the base plate, the other end is hinged with one end of follow-up lever B, the other end of follow-up lever B is hinged with the upper crossbeam, the upper crossbeam is interlocked with the upper measuring pressure plate, one end of follow-up lever C is hinged in the middle position between the two ends on follow-up lever A, the other end is hinged with the driving frame, the driving frame is interlocked with the measuring head fixing plate; the lower cross beam is positioned below the upper cross beam and is arranged on the base plate, and the lower cross beam is connected with the lower measuring pressure plate; the cylinder body of the clamping cylinder is fixed on the upper cross beam, and the cylinder rod end is connected with the lower cross beam; and contact measuring heads which are arranged on the measuring head fixing plate and move along with the measuring head fixing plate are respectively arranged at the upper, lower, left and right sides of the sample to be measured. The utility model discloses simple structure can carry out direction of height's automatic centering to the sample of different thickness (diameter), can avoid furthest because the detection error that the sample preparation is not standardized and brings.

Description

Automatic sample centering device of contact type measuring tape instrument

Technical Field

The utility model belongs to the technical field of material contact check out test set's core component and specifically relates to a contact type measuring tape appearance sample automatic centering device can detect different thickness sample cross-sectional dimensions.

Background

In order to obtain the mechanical properties of the metal material, the metal material sample needs to be subjected to accurate minimum section detection before tensile or impact test.

Tensile testing is the most basic and important test item for testing the mechanical properties of metals. The calculation formula of the main stress of the metal material is as follows:

wherein: and sigma is the stress value of the metal material sample, and S is the cross-sectional area of the metal material sample under the action of the load F.

It can be seen from the above formula that whether the cross-sectional area of the sample can be accurately measured and calculated under the condition that the material is under a certain tensile force is the key to obtain an accurate stress value of the metal material.

At present, the metal tensile test samples commonly used in China mainly comprise round test samples and rectangular (including square) test samples. According to the relevant national regulations, before metal tensile test, one (three) sectional area is measured at the middle and two ends in a gauge length respectively, and then the minimum value is taken to calculate the sectional area.

At present, a caliper, a micrometer and the like are mainly used manually in a metal sample section detection method, the influence of human factors is large during measurement, inspection errors are easy to generate, data analysis and calculation are needed manually after measurement, and therefore a measurement result is influenced and long data processing time is needed. For example, in a large iron and steel enterprise in China, hundreds of tensile samples to be detected every day are detected and the sectional area is calculated by two detectors by using tools such as calipers, and the serial number, the minimum sectional area and the like of each sample are input into a computer. In this process, different cross-sectional areas and thus different material property results may be obtained for different persons, different testing tools or slightly different locations of testing, although the same sample is used.

The utility model discloses a utility model patent "automatic laser measuring tape appearance" that the announcement day is 2013 8 month 28 days, the announcement number is CN203163685U can carry out the point of fixed interval or carry out continuous, quick, accurately measurement to same sample multiple scale distance point to tensile (impact) sample. However, because the sample which is often processed in industrial and mining enterprises is not very standard and has more burrs and burrs, the detection precision of the sample is often greatly influenced when the automatic laser ruler instrument is used for detection, and the contact type detection equipment is adopted for simultaneously detecting the sample from the midpoints of the four directions of the sample, so that a more accurate result can be obtained for the sample which is not very standard.

SUMMERY OF THE UTILITY MODEL

In order to satisfy the detection requirement of not very standard sample, the utility model aims to provide a contact type measuring tape appearance sample automatic centering device. The automatic centering device can be used for carrying out contact detection on material samples with different thicknesses.

The purpose of the utility model is realized through the following technical scheme:

the utility model discloses a base plate, lever mechanism, drive frame, gauge head fixed plate, measure top board, measure holding down plate, contact gauge head, entablature, bottom end rail and die clamping cylinder, wherein the base plate is installed in the measuring tape appearance, lever mechanism includes follow-up lever A, follow-up lever B and follow-up lever C, and this follow-up lever A's one end articulates on the base plate, and the other end articulates with follow-up lever B's one end, and this follow-up lever B's the other end articulates with the entablature, this entablature with measure the top end plate interlock, follow-up lever C's one end articulates the intermediate position between follow-up lever A's both ends, and the other end articulates with the drive frame, this drive frame with gauge head fixed plate interlock; the lower cross beam is positioned below the upper cross beam and is arranged on the base plate, and the lower cross beam is connected with the measuring lower pressure plate; the cylinder body of the clamping cylinder is fixed on the upper cross beam, and the cylinder rod end of the clamping cylinder is connected with the lower cross beam; and contact measuring heads which are arranged on the measuring head fixing plate and move along with the measuring head fixing plate are respectively arranged at the upper, lower, left and right sides of the sample to be measured.

Wherein: the base plate is provided with a guide rail on the surface of one side facing the upper cross beam and the driving frame, and the upper cross beam and the driving frame are respectively connected with the guide rail in a sliding manner.

The measuring device is characterized in that a middle hole is formed in the base plate, the upper cross beam and the lower cross beam are located on one side of the base plate, the measuring upper pressing plate and the measuring lower pressing plate are located on the other side of the base plate, and the upper cross beam and the measuring upper pressing plate and the lower cross beam and the measuring lower pressing plate are connected through the middle hole.

The base plate is provided with a strip-shaped hole, the driving frame and the measuring head fixing plate are respectively located on two sides of the base plate, the driving frame is linked with the measuring head fixing plate through a connecting block, and the connecting block penetrates through the strip-shaped hole.

The upper cross beam and the lower cross beam are parallel to each other, and the measuring upper pressure plate and the measuring lower pressure plate are parallel to each other.

The measuring head fixing plate is provided with four contact measuring heads which are arranged up and down, left and right, the upper contact measuring head and the lower contact measuring head are symmetrically arranged and have collinear axial center lines, and the left contact measuring head and the right contact measuring head are symmetrically arranged and have collinear axial center lines.

The utility model discloses an advantage does with positive effect:

the utility model has simple structure, can automatically center samples with different thicknesses (diameters) in the height direction, and can avoid the detection error caused by the nonstandard sample manufacture to the maximum extent; when applied to contact detection equipment, the device can accurately and quickly detect the sectional dimension of a metal material sample and a nonmetal material sample before a tensile test,

drawings

Fig. 1 is one of the schematic three-dimensional structures of the present invention;

FIG. 2 is a schematic structural view of the contact probe, the sample to be measured, and one side of the upper and lower pressure plates of the present invention;

fig. 3 is a second schematic perspective view of the present invention;

fig. 4 is a third schematic perspective view of the present invention;

FIG. 5 is a fourth schematic view of the three-dimensional structure of the present invention;

wherein: the test device comprises a follow-up lever A1, a follow-up lever B2, a follow-up lever C3, a driving frame 4, a guide rail 5, an upper beam 6, a lower beam 7, a base plate 8, a clamping cylinder 9, a measuring upper pressure plate 10, a measuring head fixing plate 11, a contact measuring head 12, a measuring lower pressure plate 13, a connecting block 14, a middle hole 15, a strip-shaped hole 16, a stand column 17, a clamp 18, a sample to be tested 19, a motor 20, a belt pulley transmission mechanism 21, a connecting plate 22, a sliding rail 23 and a sliding plate 24.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-5, the utility model discloses a base plate 8, lever mechanism, drive rack 4, gauge head fixed plate 11, measure top board 10, measure bottom board 13, contact gauge head 12, entablature 6, bottom end rail 7 and die clamping cylinder 9, wherein base plate 8 installs in the measuring tape instrument, the contact measuring tape instrument of this embodiment has stand 17, anchor clamps 18, motor 20, belt pulley drive 21, connecting plate 22, slide rail 23 and slide plate 24, sliding connection has two slide plates 24 on the slide rail 23, install anchor clamps 18 on one slide plate 24, base plate 8 fixes on opposite side slide plate 24, motor 20 works, drive connecting plate 22 through belt pulley drive 21, drive slide plate 24 that base plate 8 belongs to on slide rail 23 and move by connecting plate 22 again, after moving to target in place, fix two slide plates 24 respectively again; one end of a sample 19 to be measured is clamped by a clamp 18, and the other end is placed on the column 17.

The lever mechanism, the upper cross beam 6, the lower cross beam 7 and the driving frame 4 of the present embodiment are located on one side of the base plate 8, and the measuring head fixing plate 11, the measuring upper pressing plate 10, the measuring lower pressing plate 13 and the contact measuring head 12 are located on the other side of the base plate 8; the lever mechanism comprises a follow-up lever A1, a follow-up lever B2 and a follow-up lever C3, one end of the follow-up lever A1 is hinged to the base plate 8, the other end of the follow-up lever A1 is hinged to one end of the follow-up lever B2, the other end of the follow-up lever B2 is hinged to the upper cross beam 6, one end of the follow-up lever C3 is hinged to the middle position between the two ends of the follow-up lever A1, and the other end of the follow-up lever C3 is hinged to the. The base plate 8 of the present embodiment is provided with two guide rails 5 on a side surface facing the upper beam 6, and the upper beam 6 is slidably connected to the two guide rails 5, respectively.

The lower cross member 7 is located below the upper cross member 6 and is fixed to the base plate 8. In the embodiment, the base plate 8 is provided with a middle hole 15, the upper cross beam 6 and the upper measuring pressure plate 10 are linked by the middle hole 15, and the lower cross beam 7 and the lower measuring pressure plate 13 are linked by the middle hole 15. Still seted up bar hole 16 on the base plate 8, the carriage 4 links with gauge head fixed plate 11 through connecting block 14, and connecting block 14 is passed by bar hole 16. In the embodiment, the base plate 8 is provided with two strip-shaped holes 16 which are symmetrically arranged at the left side and the right side of the middle hole 15; the driving frame of the embodiment is in an inverted U shape, and two ends of the U-shaped opening are respectively connected with the measuring head fixing plate 11 through a connecting block 14; and the two ends of the U-shaped opening are respectively connected with the two guide rails 5 in a sliding way. The upper cross beam 6 and the lower cross beam 7 are parallel to each other, and the upper measuring pressure plate 10 and the lower measuring pressure plate 13 are parallel to each other.

The cylinder body of the clamping cylinder 9 is fixed on the upper cross beam 6, and the cylinder rod end of the clamping cylinder 9 is connected with the lower cross beam 7. Contact measuring heads 12 which are arranged on the measuring head fixing plate 11 and move along with the measuring head fixing plate 11 are respectively arranged on the upper side, the lower side, the left side and the right side of a sample 19 to be measured, four contact measuring heads 12 are arranged on the measuring head fixing plate 11, the upper contact measuring head 12 and the lower contact measuring head 12 are symmetrically arranged and have collinear axial center lines, and the left contact measuring head 12 and the right contact measuring head 12 are symmetrically arranged and have collinear axial center lines. Four contact gauge heads 12 are connected with control system respectively, the utility model discloses a control system is prior art, and control system is passed to the data that contact gauge head 12 detected out.

The utility model discloses a centering method does:

the utility model discloses a contact measuring tape appearance includes measuring device, sample support element, touch display screen, dustcoat etc. and measuring device is wherein important component, and automatic tracking is according to work piece thickness adjustment gauge head position through lever principle to reach the purpose of accurate measurement. The utility model can measure the same sample at multiple points with set intervals, so that the measurement result is closer to the real minimum value; the influence of human factors in the traditional measuring mode is eliminated, and the detection precision is improved. The method specifically comprises the following steps:

the clamping cylinder 9 works, and the lower beam 7 is fixed on the base plate 8 and does not move, so that the upper beam 6 is driven by the clamping cylinder 9 to move downwards, and further drives the measuring upper pressure plate 10 to move downwards to clamp the sample 19 to be measured between the measuring upper and

lower pressure plates

10 and 13; in the moving process of the upper cross beam 6, the follow-up lever B2 drives the follow-up lever A1 to rotate, and then the follow-up lever C3 drives the driving frame 4 and the driving frame 4 drives the measuring head fixing plate 11 to move; the distance from the hinge joint of the follow-up lever C3 and the follow-up lever A1 to the hinge joint of the follow-up lever A1 and the base plate 8 is 1/2 of the distance from the hinge joint of the follow-up lever B2 and the follow-up lever A1 to the hinge joint of the follow-up lever A1 and the base plate 8, when the clamping cylinder 9 drives the upper beam 6 and the upper beam 6 drive the measuring upper pressure plate 10 to clamp the sample 19 to be measured, the movement distance of the contact measuring heads 12 on the left side and the right side of the measuring head fixing plate 11 is exactly half of the thickness of the sample 19 to be measured, namely the horizontal center line position of the sample 19 to be measured, so that the accurate detection of the vertical and horizontal center line position sizes of the sample 19 to be measured is realized, and.

The utility model discloses can use on the contact check out test set that needs metal tensile test's departments such as iron and steel, non ferrous metal enterprise, machine-building industry, colleges and universities, scientific research institute provide to detect out the minimum cross sectional dimension of sample accurately.

Claims

1. The utility model provides a contact type scale appearance sample automatic centering device which characterized in that: the measuring ruler comprises a base plate (8), a lever mechanism, a driving frame (4), a measuring head fixing plate (11), a measuring upper pressing plate (10), a measuring lower pressing plate (13), a contact measuring head (12), an upper cross beam (6), a lower cross beam (7) and a clamping cylinder (9), wherein the base plate (8) is installed in the measuring ruler instrument, the lever mechanism comprises a follow-up lever A (1), a follow-up lever B (2) and a follow-up lever C (3), one end of the follow-up lever A (1) is hinged to the base plate (8), the other end of the follow-up lever A (2) is hinged to one end of the follow-up lever B (2), the other end of the follow-up lever B (2) is hinged to the upper cross beam (6), the upper cross beam (6) is linked with the measuring upper pressing plate (10), one end of the follow-up lever C (3) is hinged to the middle position between the two ends of the follow-up lever A (1), and the, the driving frame (4) is linked with the measuring head fixing plate (11); the lower cross beam (7) is positioned below the upper cross beam (6) and is arranged on the base plate (8), and the lower cross beam (7) is connected with the measuring lower pressure plate (13); the cylinder body of the clamping cylinder (9) is fixed on the upper cross beam (6), and the cylinder rod end of the clamping cylinder (9) is connected with the lower cross beam (7); and contact measuring heads (12) which are arranged on the measuring head fixing plate (11) and move along with the measuring head fixing plate (11) are respectively arranged at the upper, lower, left and right sides of the sample (19) to be measured.

2. The automatic centering device for the test sample of the contact type measuring tape according to claim 1, wherein: guide rails (5) are arranged on the surface of one side, facing the upper cross beam (6) and the driving frame (4), of the base plate (8), and the upper cross beam (6) and the driving frame (4) are respectively in sliding connection with the guide rails (5).

3. The automatic centering device for the test sample of the contact type measuring tape according to claim 1, wherein: middle hole (15) have been seted up on base plate (8), entablature (6) and bottom end rail (7) are located one side of base plate (8), measure top board (10) and bottom end rail (13) and be located the opposite side of base plate (8), pass, be connected by middle hole (15) between entablature (6) and the measurement top board (10) and between bottom end rail (7) and the measurement bottom end rail (13).

4. The automatic centering device for the test sample of the contact type measuring tape according to claim 1, wherein: the measuring head driving mechanism is characterized in that a strip-shaped hole (16) is formed in the base plate (8), the driving frame (4) and the measuring head fixing plate (11) are respectively located on two sides of the base plate (8), the driving frame (4) is linked with the measuring head fixing plate (11) through a connecting block (14), and the connecting block (14) is penetrated through the strip-shaped hole (16).

5. The automatic centering device for the test sample of the contact type measuring tape according to claim 1, wherein: the upper cross beam (6) and the lower cross beam (7) are parallel to each other, and the measuring upper pressing plate (10) and the measuring lower pressing plate (13) are parallel to each other.

6. The automatic centering device for the test sample of the contact type measuring tape according to claim 1, wherein: the four contact measuring heads (12) are arranged on the measuring head fixing plate (11), the four contact measuring heads are arranged up and down, the four contact measuring heads are arranged left and right, the upper contact measuring head and the lower contact measuring head (12) are symmetrically arranged, the axial center lines of the upper contact measuring head and the lower contact measuring head are collinear, and the left contact measuring head and the right contact measuring head (12) are symmetrically arranged, and.