CN117969307A - Intensity testing device for hard coating - Google Patents
Intensity testing device for hard coating Download PDFInfo
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- CN117969307A CN117969307A CN202410386939.XA CN202410386939A CN117969307A CN 117969307 A CN117969307 A CN 117969307A CN 202410386939 A CN202410386939 A CN 202410386939A CN 117969307 A CN117969307 A CN 117969307A
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- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 238000000576 coating method Methods 0.000 title claims abstract description 27
- 239000011248 coating agent Substances 0.000 title claims abstract description 26
- 238000005452 bending Methods 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 230000006698 induction Effects 0.000 claims description 35
- 238000009434 installation Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention belongs to the field of strength detection, and particularly discloses a strength testing device for a hard coating. The invention creatively provides a position compensation mechanism, and the problems of excessive disturbance variables in the bending strength measurement and hardness test process caused by bending deformation of a sample body can be avoided by adaptively compensating and adjusting the basic positions of two ends of the sample body after the sample body is bent.
Description
Technical Field
The invention belongs to the technical field of strength detection, and particularly relates to a strength testing device for a hard coating.
Background
The hard coating is generally sprayed or covered on the surface of the object, and the strength and the wear resistance of the original object are improved through the high hardness and the high strength of the hard coating after the hard coating is dried; the final strengthening effect of the hard coating on the material is related to various factors such as formulation, coating process (such as physical vapor deposition method, i.e. multi-arc ion plating technology), etc., so that the sample needs to be tested in the test stage, and the product needs to be sampled and detected in the mass production stage.
In the test, a hard coating is uniformly sprayed on a material sample, and after the material sample is completely dried, the bending strength test and the surface hardness test are carried out on the sample sprayed with the hard coating.
When a force perpendicular to the sample is applied, the sample may be elastically or plastically deformed by bending, and the bending may cause a position shift of a fixing point of the sample in the process of testing, thereby generating interference and influence on a test result;
If a constant tension mode is adopted, the bending amplitude of the sample body is difficult to measure, and initial kinetic energy consistency cannot be ensured when the hardness is tested in a rebound mode.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a strength testing device for a hard coating, which can avoid the influence of the tensile strength of a material on bending resistance test by a non-fixed clamping mode on one hand, and can keep the sample clamping part smooth close to the sample body by the driven rotation of a square clamping sleeve after the sample body is bent on the other hand, so as to avoid the influence of secondary bending on a test result; moreover, the invention creatively provides a position compensation mechanism, and the problem of excessive disturbance variables in the bending strength measurement and hardness test process caused by bending deformation of the sample body can be avoided by adaptively compensating and adjusting the basic positions of the two ends of the sample body after the sample body is bent.
The technical scheme adopted by the invention is as follows: the invention provides a strength testing device for a hard coating, which comprises a sliding type end fixing mechanism, a position compensation mechanism and a stretching mechanism, wherein the position compensation mechanism is arranged on the sliding type end fixing mechanism, and the stretching mechanism is arranged on the sliding type end fixing mechanism.
Further, the sliding type end fixing mechanism comprises a frame component, an end limiting component and a sample body, wherein the end limiting component is arranged on the frame component in a sliding mode, the end limiting component is symmetrically provided with two groups, two ends of the sample body are provided with sample clamping portions, and the sample body is arranged in the end limiting component through the sample clamping portions.
Preferably, the frame assembly comprises a bottom frame, two groups of arched side frames and a top cross frame, wherein the two groups of arched side frames are symmetrically arranged, the bottom frame is arranged between the two groups of arched side frames, and the top cross frame is arranged between the two groups of arched side frames.
As a further preferred aspect of the present invention, the end limiting component includes a sliding housing and a square clamping sleeve, a longitudinal sliding rail is provided on the arcuate side frame, a housing sliding rail portion is provided on the sliding housing, the housing sliding rail portion is slidably engaged in the longitudinal sliding rail, housing hinge holes are symmetrically provided on two sides of the sliding housing, clamping sleeve hinge pins are symmetrically provided on two sides of the square clamping sleeve, the clamping sleeve hinge pins are rotatably provided in the housing hinge holes, and the sample clamping portion is slidably engaged in the square clamping sleeve.
Through the mode of non-fixed centre gripping, on the one hand can avoid the tensile strength of material self to resist the influence that bending property test produced, on the other hand after the sample body has taken place to bend, can make to be close to the sample body and can keep smooth, avoid the influence of secondary bending to the test result in sample clamping part through the driven rotation of square cutting ferrule.
Further, the position compensation mechanism comprises a bending induction component and a compensation adjustment component, the bending induction component comprises a cantilever type induction plate, a pressure sensor and a control module, an induction plate installation part is arranged on the cantilever type induction plate, the cantilever type induction plate is fixedly connected onto a sample body through the induction plate installation part, the cantilever type induction plate is symmetrically provided with two groups, the pressure sensor is arranged between the two groups of cantilever type induction plates, the control module is arranged on a bottom frame, the pressure sensor is in signal connection with the control module, and the compensation adjustment component is arranged on an arched side frame.
The complete condition of the current sample body can be known through the angle change of the two groups of cantilever type induction plates which are originally parallel to each other in the stretching process, and the height difference from the middle position to the end position of the bent sample body can be obtained after the bending data of the sample body are fed back to the control module.
Preferably, the compensation adjusting assembly comprises an adjusting slide plate, an adjusting motor, an adjusting screw rod and a pre-tensioning spring, wherein a slide plate slide rail part is arranged on the adjusting slide plate, the slide plate slide rail part is clamped and slidingly arranged in a longitudinal sliding rail, the adjusting motor is arranged on an arched side frame, the adjusting screw rod is arranged on an output shaft of the adjusting motor, a slide plate center threaded hole is formed in the adjusting slide plate, the adjusting screw rod is in threaded connection with the slide plate center threaded hole, and the pre-tensioning spring is arranged between the adjusting slide plate and a sliding shell.
The position of the adjusting slide plate can be adjusted through the rotation of the adjusting motor, so that the sliding amplitude of the adjusting slide plate is equal to the height of the bent sample body, and the basic position of the end limiting assembly can be lowered by a corresponding height; through the compensation adjustment, the position of the center of the bent sample body coincides with the position of the center of the unbent sample body under the same tension condition, so that the influence of the deformation of the sample body on the test tension is avoided.
Further, the stretching mechanism comprises a pulling component, an impact component and a hand driving component, wherein the pulling component is arranged at the center of the sample body, the pulling component is arranged in the pulling component, the impact component is arranged in the pulling component, and the hand driving component is arranged on the top transverse frame.
Preferably, the pulling component comprises a sample fixing buckle and a hollow sliding frame, the sample fixing buckle is clamped at the center of the sample body, the hollow sliding frame is arranged on the sample fixing buckle, a guide position avoiding groove is formed in the top transverse frame, and the hollow sliding frame is arranged in the guide position avoiding groove in a sliding mode.
As a further preferred mode of the invention, the pulling component comprises a sliding square rod, a first spring seat, a second spring seat and pulling springs, wherein the sliding square rod is clamped and slidingly arranged in the hollow sliding frame, the second spring seat is fixedly connected to the sliding square rod, the second spring seat is fixedly connected to the hollow sliding frame, the pulling springs are arranged between the first spring seat and the second spring seat, and the first spring seat, the second spring seat and the pulling springs are symmetrically provided with two groups.
After the influence of the bending amplitude of the sample body on the testing pulling force is avoided, the pulling force to be applied can be precisely controlled by the sliding amplitude of the sliding square rod relative to the rack assembly through the control of the hand-operated driving assembly (if the bending amplitude of the sample body is compensated, the position of the pulling assembly relative to the rack assembly is almost fixed).
Preferably, the impact assembly is an impact cone, a square rod thin round hole and a square rod thick round hole which are mutually communicated are formed in the central position of the sliding square rod, the impact cone is composed of a thin shaft part, a thick shaft part and a sharp cone part, the thin shaft part is slidably arranged in the square rod thin round hole, the thick shaft part is slidably arranged in the square rod thick round hole, a fixed buckle avoidance round hole allowing the sharp cone part to pass through is formed in the central position of the sample fixing buckle, and a scale part for reading is arranged at the top of the thin shaft part.
After the pulling force reaches a certain degree, release the impact cone through taking out the mode of twist grip, under the same circumstances of pulling force that originally applyed, the kinetic energy that the impact cone carried is also invariable, after sliding square pole bumps into stop in sample fixation knot department, the impact cone continues to strike pointed cone portion under inertial effect, can test the surface hardness of sample body through the degree of depth that pointed cone portion invaded in the sample body.
As a further preferable mode of the invention, the hand-operated driving assembly comprises a hand-operated bracket, a driving gear and a rotating handle, wherein the hand-operated bracket is fixedly connected to the top transverse frame, the driving gear is rotationally arranged in the hand-operated bracket, a side rack part is arranged on the sliding square rod, the driving gear is in meshed connection with the side rack part, a polygonal through hole is arranged at the center position of the driving gear, a polygonal section is arranged on the rotating handle, and the polygonal section is slidingly arranged in the polygonal through hole.
The beneficial effects obtained by the invention by adopting the structure are as follows:
(1) Through the mode of non-fixed centre gripping, on the one hand can avoid the tensile strength of material self to resist the influence that bending property test produced, on the other hand after the sample body has taken place to bend, can make to be close to the sample body and can keep smooth, avoid the influence of secondary bending to the test result in sample clamping part through the driven rotation of square cutting ferrule.
(2) The complete condition of the current sample body can be known through the angle change of the two groups of cantilever type induction plates which are originally parallel to each other in the stretching process, and the height difference from the middle position to the end position of the bent sample body can be obtained after the bending data of the sample body are fed back to the control module.
(3) The position of the adjusting slide plate can be adjusted through the rotation of the adjusting motor, so that the sliding amplitude of the adjusting slide plate is equal to the height of the bent sample body, and the basic position of the end limiting assembly can be lowered by a corresponding height; through the compensation adjustment, the position of the center of the bent sample body coincides with the position of the center of the unbent sample body under the same tension condition, so that the influence of the deformation of the sample body on the test tension is avoided.
(4) After the influence of the bending amplitude of the sample body on the testing pulling force is avoided, the pulling force to be applied can be precisely controlled by the sliding amplitude of the sliding square rod relative to the rack assembly through the control of the hand-operated driving assembly (if the bending amplitude of the sample body is compensated, the position of the pulling assembly relative to the rack assembly is almost fixed).
(5) After the pulling force reaches a certain degree, release the impact cone through taking out the mode of twist grip, under the same circumstances of pulling force that originally applyed, the kinetic energy that the impact cone carried is also invariable, after sliding square pole bumps into stop in sample fixation knot department, the impact cone continues to strike pointed cone portion under inertial effect, can test the surface hardness of sample body through the degree of depth that pointed cone portion invaded in the sample body.
Drawings
FIG. 1 is a perspective view of a strength testing device for a hard coating according to the present invention;
FIG. 2 is a front view of a hard coating strength testing device according to the present invention;
FIG. 3 is a top view of a hard coating strength testing device according to the present invention;
FIG. 4 is a cross-sectional view taken along section line A-A in FIG. 3;
FIG. 5 is a cross-sectional view taken along section line B-B in FIG. 2;
FIG. 6 is a cross-sectional view taken along section line C-C in FIG. 2;
FIG. 7 is a cross-sectional view taken along section line D-D in FIG. 2;
FIG. 8 is an exploded view of a hard coat strength testing device according to the present invention;
FIG. 9 is an enlarged view of a portion of the portion I of FIG. 4;
FIG. 10 is an enlarged view of a portion of the portion II of FIG. 8;
FIG. 11 is an enlarged view of a portion of III in FIG. 5;
Fig. 12 is an enlarged view of a portion at iv in fig. 8.
Wherein 1, a sliding type end fixing mechanism, 2, a position compensation mechanism, 3, a stretching mechanism, 4, a frame component, 5, an end limiting component, 6, a sample body, 7, a bottom frame, 8, an arched side frame, 9, a top transverse frame, 10, a sliding housing, 11, a square clamping sleeve, 12, a sample clamping part, 13, a longitudinal sliding rail, 14, a guiding clearance groove, 15, a housing sliding rail part, 16, a housing hinge hole, 17, a clamping sleeve hinge pin, 18, a bending induction component, 19, a compensation adjustment component, 20, a cantilever type induction plate, 21, a pressure sensor, 22, a control module, 23, an adjustment slide plate, 24, an adjustment motor, 25, an adjustment screw rod, 26 and a pre-tensioning spring, 27, an induction plate mounting part 28, a slide plate sliding rail part 29, a slide plate center threaded hole, 30, a pulling component, 31, a pulling component, 32, an impact component, 33, a hand driving component, 34, a sample fixing buckle, 35, a hollow sliding frame, 36, a sliding square rod, 37, a first spring seat, 38, a second spring seat, 39, a pulling spring, 40, an impact cone, 41, a hand support, 42, a driving gear, 43, a rotating handle, 44, a fixing buckle avoidance round hole, 45, a square rod thin round hole, 46, a square rod thick round hole, 47, a side rack part, 48, a thin shaft part, 49, a thick shaft part, 50, a pointed cone part, 51, a polygonal through hole, 52, a polygonal section, 53 and a scale part.
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientation or positional relationships based on those shown in the drawings, merely to facilitate description of the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
As shown in fig. 1 to 12, the invention provides a strength testing device for a hard coating, which comprises a sliding type end fixing mechanism 1, a position compensation mechanism 2 and a stretching mechanism 3, wherein the position compensation mechanism 2 is arranged on the sliding type end fixing mechanism 1, and the stretching mechanism 3 is arranged on the sliding type end fixing mechanism 1.
The sliding type end fixing mechanism 1 comprises a frame component 4, an end limiting component 5 and a sample body 6, wherein the end limiting component 5 is arranged on the frame component 4 in a sliding mode, the end limiting component 5 is symmetrically provided with two groups, two ends of the sample body 6 are provided with sample clamping portions 12, and the sample body 6 is arranged in the end limiting component 5 through the sample clamping portions 12.
The frame assembly 4 comprises a bottom frame 7, arched side frames 8 and a top cross frame 9, wherein the arched side frames 8 are symmetrically provided with two groups, the bottom frame 7 is arranged between the two groups of arched side frames 8, and the top cross frame 9 is arranged between the two groups of arched side frames 8.
The end limiting assembly 5 comprises a sliding shell 10 and a square clamping sleeve 11, a longitudinal sliding rail 13 is arranged on the arched side frame 8, a shell sliding rail portion 15 is arranged on the sliding shell 10, the shell sliding rail portion 15 is clamped and slidingly arranged in the longitudinal sliding rail 13, shell hinge holes 16 are symmetrically arranged on two sides of the sliding shell 10, clamping sleeve hinge pins 17 are symmetrically arranged on two sides of the square clamping sleeve 11, the clamping sleeve hinge pins 17 are rotationally arranged in the shell hinge holes 16, and a sample clamping portion 12 is clamped and slidingly arranged in the square clamping sleeve 11.
Through the mode of non-fixed centre gripping, on the one hand can avoid the tensile strength of material self to resist the influence that bending property test produced, on the other hand after sample body 6 has taken place the bending, can make near sample body 6 can keep smooth, avoid the influence of secondary bending to the test result in sample clamping part 12 through square cutting ferrule 11's driven rotation.
The stretching mechanism 3 comprises a pulling component 30, a pulling component 31, an impact component 32 and a hand-operated driving component 33, wherein the pulling component 30 is arranged at the center of the sample body 6, the pulling component 31 is arranged in the pulling component 30, the impact component 32 is arranged in the pulling component 31, and the hand-operated driving component 33 is arranged on the top transverse frame 9.
The pulling assembly 30 comprises a sample fixing buckle 34 and a hollow sliding frame 35, the sample fixing buckle 34 is clamped at the center of the sample body 6, the hollow sliding frame 35 is arranged on the sample fixing buckle 34, the top transverse frame 9 is provided with a guide avoidance groove 14, and the hollow sliding frame 35 is slidably arranged in the guide avoidance groove 14.
The pulling component 31 comprises a sliding square rod 36, a first spring seat 37, a second spring seat 38 and a pulling spring 39, wherein the sliding square rod 36 is clamped and slidingly arranged in the hollow sliding frame 35, the second spring seat 38 is fixedly connected to the sliding square rod 36, the second spring seat 38 is fixedly connected to the hollow sliding frame 35, the pulling spring 39 is arranged between the first spring seat 37 and the second spring seat 38, and the first spring seat 37, the second spring seat 38 and the pulling spring 39 are symmetrically provided with two groups.
After the influence of the bending amplitude of the sample body 6 on the testing tension is avoided, the magnitude of the tension to be applied can be precisely controlled by the sliding amplitude of the sliding square rod 36 relative to the rack assembly 4 through the control of the hand-operated driving assembly 33 (if the bending amplitude of the sample body 6 is compensated, the position of the pulling assembly 30 relative to the rack assembly 4 is almost fixed).
The impact assembly 32 is an impact cone 40, a square rod thin round hole 45 and a square rod thick round hole 46 which are mutually communicated are arranged at the central position of the sliding square rod 36, the impact cone 40 is composed of a thin shaft part 48, a thick shaft part 49 and a sharp cone part 50, the thin shaft part 48 is slidably arranged in the square rod thin round hole 45, the thick shaft part 49 is slidably arranged in the square rod thick round hole 46, a fixed buckle avoidance round hole 44 which allows the sharp cone part 50 to pass through is arranged at the central position of the sample fixing buckle 34, and a scale part 53 for reading is arranged at the top of the thin shaft part 48.
When the tensile force reaches a certain degree, the impact cone 40 is released by withdrawing the rotary handle 43, under the condition that the tensile force applied originally is the same, the kinetic energy carried by the impact cone 40 is constant, and after the sliding square rod 36 collides and stops at the sample fixing buckle 34, the impact cone 40 continuously impacts the pointed cone 50 under the action of inertia, and the surface hardness of the sample body 6 can be tested through the depth of penetration of the pointed cone 50 into the sample body 6.
The hand driving assembly 33 comprises a hand support 41, a driving gear 42 and a rotating handle 43, wherein the hand support 41 is fixedly connected to the top transverse frame 9, the driving gear 42 is rotationally arranged in the hand support 41, a side rack 47 is arranged on the sliding square rod 36, the driving gear 42 is in meshed connection with the side rack 47, a polygonal through hole 51 is formed in the center of the driving gear 42, a polygonal section 52 is arranged on the rotating handle 43, and the polygonal section 52 is slidably arranged in the polygonal through hole 51.
The position compensation mechanism 2 comprises a bending induction component 18 and a compensation adjustment component 19, the bending induction component 18 comprises a cantilever type induction plate 20, a pressure sensor 21 and a control module 22, an induction plate installation part 27 is arranged on the cantilever type induction plate 20, the cantilever type induction plate 20 is fixedly connected to the sample body 6 through the induction plate installation part 27, the cantilever type induction plate 20 is symmetrically provided with two groups, the pressure sensor 21 is arranged between the two groups of cantilever type induction plates 20, the control module 22 is arranged on the bottom frame 7, the pressure sensor 21 is in signal connection with the control module 22, and the compensation adjustment component 19 is arranged on the arched side frame 8.
The complete condition of the current sample body 6 can be known through the angle change of the two groups of cantilever type sensing plates 20 which are originally parallel to each other in the stretching process, and the height difference from the middle position to the end position of the bent sample body 6 can be obtained after the bending data of the sample body 6 is fed back to the control module 22.
The compensation adjusting assembly 19 comprises an adjusting slide plate 23, an adjusting motor 24, an adjusting screw rod 25 and a pre-tensioning spring 26, wherein a slide plate slide rail part 28 is arranged on the adjusting slide plate 23, the slide plate slide rail part 28 is clamped and slidingly arranged in the longitudinal sliding rail 13, the adjusting motor 24 is arranged on the arched side frame 8, the adjusting screw rod 25 is arranged on an output shaft of the adjusting motor 24, a slide plate center threaded hole 29 is formed in the adjusting slide plate 23, the adjusting screw rod 25 is in threaded connection with the slide plate center threaded hole 29, and the pre-tensioning spring 26 is arranged between the adjusting slide plate 23 and the sliding shell 10.
The position of the adjusting slide plate 23 can be adjusted by the rotation of the adjusting motor 24, so that the sliding amplitude of the adjusting slide plate 23 is equal to the height of the bent sample body 6, and the basic position of the end limiting assembly 5 can be lowered by a corresponding height; through this kind of compensation adjustment, can make under the same pulling force condition, the center place position of sample body 6 after bending coincides with the center place position of unbent sample body 6 to avoid the influence that sample body 6 self deformation produced to test pulling force.
When the test device is specifically used, firstly, a user needs to insert the sample clamping parts 12 at two ends of the sample body 6 into the square clamping sleeve 11, then fix the cantilever type sensing plate 20 and the sample fixing buckle 34 in the middle area of the sample body 6, then insert the polygonal section 52 of the rotating handle 43 into the polygonal through hole 51, and rotate with the driving gear 42 by rotating the rotating handle 43, so that the test can be started;
The sliding square bar 36 can be lifted by the engagement of the driving gear 42 and the side rack 47 when the driving gear 42 rotates, the pulling spring 39 is gradually compressed when the sliding square bar 36 is lifted, and the bending force applied to the sliding square bar 36 is provided by the pulling spring 39 and the pre-tensioning spring 26 together; the pretension spring 26 has extremely small deformation amplitude and high rigidity, and is mainly used for preventing the frame assembly 4 from being subjected to excessive impact when the impact test is finally carried out.
If the sample body 6 is not deformed, only the tiny deformation amount of the pretensioned spring 26 needs to be considered, and the rotation angle of the rotating handle 43 corresponds to the tensile force applied to the sample body 6; if the middle position of the sample body 6 is bent, the two groups of cantilever type sensing plates 20 are not parallel any more, the cantilever type sensing plates 20 with included angles generate extrusion force on the pressure sensor 21, the larger the bending amplitude of the sample body 6 is, the larger the sensing value of the pressure sensor 21 is, and after the sensing value of the pressure sensor 21 is transmitted to the control module 22, the control module 22 controls the adjusting motor 24 to rotate;
The adjusting motor 24 rotates with the adjusting screw rod 25, so that the adjusting slide plate 23 slides downwards, and the sliding amplitude of the adjusting slide plate 23 is always equal to the equivalent height (the equivalent height refers to the height difference from the middle position to the end position of the sample body 6 after bending) sensed by the bending induction assembly 18 through the bending amplitude of the sample body 6; by compensating and adjusting the position of the sample clamping part 12, the central area position of the sample body 6, namely the position of the pulling assembly 30, can be kept stable no matter whether the sample body 6 is bent or not or the bending amplitude is ensured, so that the influence of the bending of the sample body 6 on the test tensile force is avoided;
the bending resistance of the sample body 6 can be reflected by the value fed back by the pressure sensor 21 when the rotation angle of the rotating handle 43 is fixed.
The precondition for the compensation adjustment is that the specimen grip portion 12 cannot be held fixedly and cannot be bent secondarily, otherwise the center position of the specimen main body 6 is not significantly maintained because of excessive other variables (influencing factors).
After the bending test is finished, the sliding square rod 36 can slide towards the sample body 6 rapidly under the action of elasticity by extracting the polygonal section 52 from the polygonal through hole 51, when the tensile force is constant, the impact force carried by the impact cone 40 when impacting the sample body 6 is also constant, after the sliding square rod 36 is crashed and stopped, the impact cone 40 continues to extend under the action of inertia, the sharp cone 50 passes through the fixed knot avoidance round hole 44 and impacts the surface of the sample body 6, the depth of penetration of the sharp cone 50 into the sample body 6 can be obtained through the reading at the scale part 53, and the shallower the depth of penetration of the sharp cone 50 into the sample body 6 is, the higher the surface hardness of the hard coating is indicated;
If the sample body 6 is plastically deformed, the impact cone 40 will directly strike the sample body 6 during the impact phase; if the sample body 6 is elastically deformed, the bending amplitude of the sample body 6 is reduced along with the reduction of the tensile force, and the adjusting slide plate 23 can still be adjusted through the induction of the bending induction component 18, so that the position of the central area of the sample body 6 is always kept stable.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.
Claims (10)
1. The utility model provides a strength testing arrangement of stereoplasm coating which characterized in that: the device comprises a sliding type end fixing mechanism (1), a position compensation mechanism (2) and a stretching mechanism (3), wherein the position compensation mechanism (2) is arranged on the sliding type end fixing mechanism (1), and the stretching mechanism (3) is arranged on the sliding type end fixing mechanism (1);
The sliding type end fixing mechanism (1) comprises a frame component (4), an end limiting component (5) and a sample body (6), wherein the end limiting component (5) is arranged on the frame component (4) in a sliding mode, the end limiting component (5) is symmetrically provided with two groups, two ends of the sample body (6) are provided with sample clamping portions (12), and the sample body (6) is arranged in the end limiting component (5) through the sample clamping portions (12).
2. The apparatus for testing the strength of a hard coating according to claim 1, wherein: the frame assembly (4) comprises a bottom frame (7), arched side frames (8) and a top cross frame (9), wherein two groups of arched side frames (8) are symmetrically arranged, the bottom frame (7) is arranged between the two groups of arched side frames (8), and the top cross frame (9) is arranged between the two groups of arched side frames (8).
3. The apparatus for testing the strength of a hard coating according to claim 2, wherein: the end limiting assembly (5) comprises a sliding shell (10) and a square clamping sleeve (11), a longitudinal sliding rail (13) is arranged on the arched side frame (8), a shell sliding rail part (15) is arranged on the sliding shell (10), the shell sliding rail part (15) is clamped and slidingly arranged in the longitudinal sliding rail (13), shell hinge holes (16) are symmetrically arranged on two sides of the sliding shell (10), clamping sleeve hinge pins (17) are symmetrically arranged on two sides of the square clamping sleeve (11), the clamping sleeve hinge pins (17) are rotationally arranged in the shell hinge holes (16), and the sample clamping part (12) is clamped and slidingly arranged in the square clamping sleeve (11).
4. A hard coat strength testing device according to claim 3, wherein: the position compensation mechanism (2) comprises a bending induction component (18) and a compensation adjustment component (19), the bending induction component (18) comprises a cantilever type induction plate (20), a pressure sensor (21) and a control module (22), an induction plate installation part (27) is arranged on the cantilever type induction plate (20), the cantilever type induction plate (20) is fixedly connected onto a sample body (6) through the induction plate installation part (27), the cantilever type induction plate (20) is symmetrically provided with two groups, the pressure sensor (21) is arranged between the two groups of cantilever type induction plates (20), the control module (22) is arranged on a bottom frame (7), the pressure sensor (21) is connected with the control module (22) through signals, and the compensation adjustment component (19) is arranged on an arched side frame (8).
5. The apparatus for testing the strength of a hard coating according to claim 4, wherein: the compensation adjusting assembly (19) comprises an adjusting slide plate (23), an adjusting motor (24), an adjusting screw rod (25) and a pre-tensioning spring (26), wherein a slide plate sliding rail part (28) is arranged on the adjusting slide plate (23), the slide plate sliding rail part (28) is clamped and slidingly arranged in a longitudinal sliding rail (13), the adjusting motor (24) is arranged on an arched side frame (8), the adjusting screw rod (25) is arranged on an output shaft of the adjusting motor (24), a slide plate center threaded hole (29) is formed in the adjusting slide plate (23), the adjusting screw rod (25) is in threaded connection with the slide plate center threaded hole (29), and the pre-tensioning spring (26) is arranged between the adjusting slide plate (23) and the sliding shell (10).
6. The apparatus for testing the strength of a hard coating according to claim 5, wherein: the stretching mechanism (3) comprises a pulling component (30), a pulling component (31), an impact component (32) and a hand-operated driving component (33), wherein the pulling component (30) is arranged at the center of the sample body (6), the pulling component (31) is arranged in the pulling component (30), the impact component (32) is arranged in the pulling component (31), and the hand-operated driving component (33) is arranged on the top transverse frame (9).
7. The apparatus for testing the strength of a hard coating according to claim 6, wherein: the pulling assembly (30) comprises a sample fixing buckle (34) and a hollow sliding frame (35), the sample fixing buckle (34) is clamped at the center of the sample body (6), the hollow sliding frame (35) is arranged on the sample fixing buckle (34), a guide position avoiding groove (14) is formed in the top transverse frame (9), and the hollow sliding frame (35) is slidably arranged in the guide position avoiding groove (14).
8. The apparatus for testing the strength of a hard coating according to claim 7, wherein: the utility model provides a pull subassembly (31) is including slip square pole (36), spring holder one (37), spring holder two (38) and pull spring (39), in slip square pole (36) block slides and locates fretwork carriage (35), spring holder two (38) rigid coupling is on slip square pole (36), spring holder two (38) rigid coupling is on fretwork carriage (35), pull spring (39) are located between spring holder one (37) and spring holder two (38), spring holder one (37), spring holder two (38) and pull spring (39) symmetry are equipped with two sets of.
9. The apparatus for testing the strength of a hard coating according to claim 8, wherein: the impact assembly (32) is an impact cone (40), a square rod thin round hole (45) and a square rod thick round hole (46) which are mutually communicated are formed in the central position of the sliding square rod (36), the impact cone (40) is composed of a thin shaft part (48), a thick shaft part (49) and a pointed cone part (50), the thin shaft part (48) is slidably arranged in the square rod thin round hole (45), the thick shaft part (49) is slidably arranged in the square rod thick round hole (46), a fixed buckling position round hole (44) allowing the pointed cone part (50) to pass through is formed in the central position of the sample fixing buckle (34), and a scale part (53) for reading is arranged at the top of the thin shaft part (48).
10. The apparatus for testing the strength of a hard coating according to claim 9, wherein: the hand-operated driving assembly (33) comprises a hand-operated support (41), a driving gear (42) and a rotating handle (43), wherein the hand-operated support (41) is fixedly connected to a top transverse frame (9), the driving gear (42) is rotationally arranged in the hand-operated support (41), a side rack part (47) is arranged on a sliding square rod (36), the driving gear (42) is meshed with the side rack part (47), a polygonal through hole (51) is formed in the central position of the driving gear (42), a polygonal section (52) is arranged on the rotating handle (43), and the polygonal section (52) is slidingly arranged in the polygonal through hole (51).
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| CN202410386939.XA CN117969307B (en) | 2024-04-01 | 2024-04-01 | Intensity testing device for hard coating |
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Cited By (1)
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| CN118130225A (en) * | 2024-05-08 | 2024-06-04 | 徐州瑞雪包装有限公司 | Stretching testing device for woven bags |
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| CN117969307B (en) | 2024-06-11 |
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