CN208476679U - A kind of micro-displacement detection device for metal rubber material - Google Patents

Abstract

The utility model relates to a kind of micro-displacement detection devices for metal rubber material, including rack, being horizontally disposed in the rack has aid upper plate and aid lower plate, the strong input plate of aid upper plate top horizontal setting, several power transmission springs are evenly distributed between the aid upper plate upper surface and power input plate lower surface, the side of the power transmission spring is equipped with the graduated scale for being used to indicate power transmission amount of spring compression, the aid upper plate is equipped with the glove notch for placing standard quality clump weight in the installation site of each power transmission spring, the aid lower plate drives lifting through the driving mechanism of bottom, the aid lower plate is equipped with and is vertically directed mechanism, force snesor is equipped with above the power input plate.The structure for being used for the micro-displacement detection device of metal rubber material is simple.

Description

A kind of micro-displacement detection device for metal rubber material

Technical field

The utility model relates to a kind of micro-displacement detection devices for metal rubber material, are related to metal rubber material The fields of measurement of stress-strain relation.

Background technique

The mechanical property of material refers to that material under varying environment (temperature, medium, humidity), bears various plus loads The mechanical characteristics shown when (stretching, compression, bending, torsion, impact, alternate stress etc.), are the main usability of material One of can.Stress-strain diagram is the important figure for describing the mechanical property of material.Nowadays to porous material especially metal When the stress-strain diagram of rubber material carries out accurate measurement, often face following problem: the precision of dynamometry is low, and part to be measured exists Mismachining tolerance make with aid face contact upper and lower surface it is not parallel, aid face it is easily crooked, this makes measured result The actual result of all the points in the plane domain in material aid direction cannot be represented, this leads to not accurate assessment workpiece Quality level not can guarantee the accurate load of micro-displacement.

Utility model content

In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide one kind to be used for metal-rubber The micro-displacement detection device of material, is not only simple in structure, and convenient and efficient.

In order to solve the above-mentioned technical problem, the technical solution of the utility model is: a kind of for the micro- of metal rubber material Displacement detector, including rack, being horizontally disposed in the rack has aid upper plate and aid lower plate, the aid upper plate top Horizontally disposed strong input plate, is evenly distributed in several between the aid upper plate upper surface and power input plate lower surface Power transmission spring, the side of the power transmission spring are equipped with the graduated scale for being used to indicate power transmission amount of spring compression, in the aid Plate is equipped with the glove notch for placing standard quality clump weight, the aid lower plate in the installation site of each power transmission spring Driving mechanism through bottom drives lifting, and the aid lower plate, which is equipped with, is vertically directed mechanism, sets above the power input plate Force sensor.

Preferably, the rack includes three vertical columns, and the line between three vertical columns is equilateral triangle, institute The circumference for stating vertical columns is fixed with T-shaped upright slide rail, and the edge of the aid lower plate is equipped with T-shaped vertical Sliding slot, the upright slide rail are embedded in vertical chute and are slidably matched, and the vertical chute is led vertically with upright slide rail composition To mechanism.

Preferably, the driving mechanism includes stepper motor, and the lower surface of the aid lower plate is fixed with axis vertical Screw shell, the inside of the screw shell are equipped with internal screw thread, and the output shaft of the stepper motor is equipped with external screw thread, the step It is spirally connected inside into the output shaft and screw shell of motor.

Preferably, it is described aid upper plate with accommodate lower plate middle part offer size it is identical and it is being vertically overlapped it is rectangular lead to Slot is equipped with T-shaped horizontal slide rail on the surrounding cell wall of the square three-way groove, and horizontal slide rail is by two horizontal slide rails and two Longitudinal slide rail forms, and the central plate for contact measured part is equipped on the square three-way groove, the inside of the central plate is all provided with There are lateral through slot and longitudinal through slot, dislocation opens up the transverse direction through slot up and down with longitudinal through slot；It is worn on the transverse direction through slot Equipped with lateral slide plate, the both ends of the transverse direction slide plate are symmetrically arranged with T-shaped longitudinal chute, the longitudinal chute with it is vertical It is slidably matched to sliding rail；Longitudinal slide plate is equipped on the longitudinal direction through slot, the both ends of the longitudinal direction slide plate are symmetrically arranged with " T " The horizontal concrete chute of font, the horizontal concrete chute are slidably matched with horizontal slide rail.

Preferably, the power transmission spring includes the interior upper bush for setting cylinder chamber, and the upper bush bottom is logical equipped with cylinder chamber Mouthful, it is coaxially inserted with retracting cylinder on the cylinder chamber port, the apical grafting in cylinder chamber is installed at the top of the retracting cylinder The outer diameter of end face, the apical grafting end face is equal to cylinder chamber internal diameter, and compression is equipped between the apical grafting end face and cylinder chamber inner top Spring, the aid upper plate upper surface offer the cylinder shape groove for retracting cylinder insertion；The upper bush outer diameter is equal to circle Cylindrical groove internal diameter, the retracting cylinder outer diameter are less than cylinder shape groove internal diameter, and the outer top of the upper bush and power input plate Lower surface apical grafting, graduated scale are set to the peripheral part of upper bush.

Preferably, the quantity of the power transmission spring be three, the aid upper plate upper surface it is fixed there are three upper plate convex block, The cylinder shape groove is respectively positioned on upper plate convex block.

Preferably, the glove notch is respectively positioned on the underface of corresponding power transmission spring, the open direction of the glove notch Outside portion.

Preferably, it is installed with a horizontal support plate right above three vertical columns, it is fixed between three vertical columns There are the first support frame being located at below aid upper plate, the second support frame below power input plate, first when not pressurizeing Support is temporarily supported with aid upper plate following table face contact, and the second support frame upper surface is contacted with power input plate when not pressurizeing Temporarily supported.

Preferably, the power input plate connects strong output plate through force amplificatory structure, and the force amplificatory structure includes Horizontal exert oneself input lever and upper power output rod；The both ends for input lever of exerting oneself symmetrically are hinged with isometric and upward lower and connect vertically Bar, the upper end of lower vertical connecting rod are hinged with isometric lower waling stripe, two lower waling stripe bilateral symmetries；Upper power output rod Both ends are symmetrically hinged with vertical connecting rod isometric and directed downwardly, and the lower end of upper vertical connecting rod is hinged with isometric upper level even Bar, waling stripe bilateral symmetry on two；Between the lower waling stripe and upper waling stripe in left side respectively with left center vertical connecting rod Both ends are hinged, hinged with right center vertical connecting rod two end respectively between the lower waling stripe and upper waling stripe on right side；Two are lauched The middle front part of flat connecting rod it is symmetrical hinged on the rack, on two the middle and back of waling stripe it is symmetrical it is hinged on the rack；It exerts oneself It inputs pole length and is less than upper power output pole length, lower vertical length of connecting rod is less than upper vertical length of connecting rod, lower horizontal length of connecting rod Greater than upper waling stripe length, left center vertical length of connecting rod is equal to right center vertical length of connecting rod；Input lever of exerting oneself is connected in Power inputs on plate, and upper power output rod is connected on power output plate, and rack is inputted between plate and power output plate in power and set Have for being lauched flat connecting rod and the hinged support plate of upper waling stripe, the force snesor is connect with power output plate.

Compared with prior art, the utility model has the following beneficial effects: the micro-displacement for being used for metal rubber material The structure of detection device is simple, and aid lower plate moves up, and part to be measured is by compression-loaded, and aid upper plate is through compressing power transmission in loading procedure Spring drive input plate moves up, accommodated it is observed that the decrement of each power transmission spring, when decrement is consistent upper plate it is vertical on It moves, is adjusted to unanimously when inconsistent by increasing standard quality clump weight, remain aid upper plate and move up vertically, standard matter The level for measuring the adjustable aid upper plate of clump weight eliminates the not parallel brought measurement of metal-rubber part upper and lower surface to be measured Error；It can be commented by the position for designing glove notch and the quality for observing each position glove notch internal standard quality clump weight Estimate the quality level of workpiece (part to be measured).

The utility model is described in more detail with reference to the accompanying drawings and detailed description.

Detailed description of the invention

Fig. 1 is the organigram one of the utility model embodiment.

Fig. 2 is the organigram two of the utility model embodiment.

Fig. 3 is the structural schematic diagram for accommodating lower plate.

Fig. 4 is the structural schematic diagram one for accommodating upper plate.

Fig. 5 is the structural schematic diagram two for accommodating upper plate.

Fig. 6 is the structural schematic diagram three for accommodating upper plate.

Fig. 7 is the complete section schematic diagram of power transmission spring.

Fig. 8 is the use state diagram of strain-gauge transducer.

Fig. 9 is the organigram of force amplificatory structure.

Specific embodiment

In order to make the above-mentioned features and advantages of the utility model more obvious and understandable, special embodiment below, and cooperate attached drawing, It is described in detail below.

As shown in Fig. 1 ~ 9, a kind of micro-displacement detection device for metal rubber material, including rack 1, in the rack It is horizontally disposed to have aid upper plate 2 and aid lower plate 3, the strong input plate 4 of aid upper plate top horizontal setting, the aid Several power transmission springs 5, the side of the power transmission spring are evenly distributed between upper plate upper surface and power input plate lower surface It is equipped with the graduated scale 6 for being used to indicate power transmission amount of spring compression, installation site of the aid upper plate in each power transmission spring It is equipped with the glove notch 7 for placing standard quality clump weight, the aid lower plate drives lifting through the driving mechanism of bottom, The aid lower plate, which is equipped with, is vertically directed mechanism, is equipped with force snesor 8, aid upper plate and aid above the power input plate Lower plate is used to accommodate part to be measured, and force snesor is pressure sensor.

In the utility model embodiment, the rack includes three vertical columns 9, the line between three vertical columns For equilateral triangle, the circumference of the vertical columns is fixed with T-shaped upright slide rail 10, the edge of the aid lower plate Equipped with T-shaped vertical chute 11, the upright slide rail is embedded in vertical chute and is slidably matched, the vertical chute with Upright slide rail composition is vertically directed mechanism, three vertical chute three-point fixs, so that aid lower plate can only do horizontal movement up and down, This is further ensured that in metal-rubber workpiece measurement process by loading force that always straight up it is vertical that the holding of two central plates synchronizes Horizontal movement, it is ensured that torque suspension does not act on part to be measured in measurement process, improves accuracy.

In the utility model embodiment, the driving mechanism includes stepper motor 12, the lower surface of the aid lower plate It is fixed with the screw shell 13 of axis vertical, the inside of the screw shell is equipped with internal screw thread, the output shaft of the stepper motor It is equipped with external screw thread, is spirally connected inside the output shaft and screw shell of the stepper motor.

In the utility model embodiment, to offer size identical and perpendicular with the middle part of aid lower plate for the aid upper plate To the square three-way groove 14 of coincidence, it is equipped with T-shaped horizontal slide rail on the surrounding cell wall of the square three-way groove, horizontal slide rail is equal It is made of two horizontal slide rails 15 and two longitudinal slide rails 16, the central plate for contact measured part is equipped on the square three-way groove 17, the inside of the central plate is equipped with lateral through slot and longitudinal through slot, the transverse direction through slot and the dislocation up and down of longitudinal through slot It opens up；Lateral slide plate 18 is equipped on the transverse direction through slot, the both ends of the transverse direction slide plate are symmetrically arranged with T-shaped indulge To sliding slot 19, the longitudinal chute is slidably matched with longitudinal slide rail；Longitudinal slide plate 20, institute are equipped on the longitudinal direction through slot The both ends for stating longitudinal slide plate are symmetrically arranged with T-shaped horizontal concrete chute 21, and the horizontal concrete chute is matched with horizontal slide rail sliding It closes, various sizes of part to be measured can be measured by the planar dimension of design centre plate, by changing horizontal concrete chute, longitudinal chute Length can limit the translation range of central plate, solve tradition aid mechanism and often limit asking for part geomery to be measured Topic can also continuously measure hardness in the case where not changing force snesor range and differ larger part to be measured.

In the utility model embodiment, the power transmission spring includes the interior upper bush 23 for setting cylinder chamber 22, the upper set Cylinder bottom is equipped with cylinder chamber port, is coaxially inserted with retracting cylinder 24 on the cylinder chamber port, the top of the retracting cylinder is fixed There is the apical grafting end face 25 being located in cylinder chamber, the outer diameter of the apical grafting end face is equal to cylinder chamber internal diameter, the apical grafting end face and column Compressed spring 26 is equipped between the intracavitary top of shape, the aid upper plate upper surface offers recessed for the cylinder of retracting cylinder insertion Slot 27；The upper bush outer diameter be equal to cylinder shape groove internal diameter, the retracting cylinder outer diameter be less than cylinder shape groove internal diameter, it is described on The outer top of sleeve and power input plate lower surface apical grafting, and graduated scale is set to the peripheral part of upper bush；The depth of cylinder shape groove Degree is greater than the whole height of power transmission spring when compressed spring squeezes completely；In measurement process, power transmission spring will be finally fully retracted In cylinder shape groove, the final upper plate that accommodates contact force will input plate and transmission force simultaneously, and the upper bush of power transmission spring has scale Scale carries out plane reference to aid upper plate.Standard quality clump weight can eliminate metal-rubber part upper and lower surface to be measured not Measurement error brought by parallel.

In the utility model embodiment, the quantity of the power transmission spring is three, and the aid upper plate upper surface is fixed There are three upper plate convex block 28, the cylinder shape groove is respectively positioned on upper plate convex block.

In the utility model embodiment, the glove notch is respectively positioned on the underface of corresponding power transmission spring, the glove Notch it is open towards outside portion.

In the utility model embodiment, it is installed with a horizontal support plate 29 right above three vertical columns, three The first support frame 30 being located at below aid upper plate, the second support below power input plate are installed between vertical columns Frame 31, the first support frame is temporarily supported with aid upper plate following table face contact when not pressurizeing, when not pressurizeing on the second support frame Surface contacts with power input plate and is temporarily supported.

In the utility model embodiment, the power input plate connects strong output plate 32, institute through force amplificatory structure Stating force amplificatory structure includes horizontal exert oneself input lever 33 and upper power output rod 34；The both ends for input lever of exerting oneself symmetrically are hinged with Long and lower vertical connecting rod 35 upward, the upper end of lower vertical connecting rod are hinged with isometric lower waling stripe 36, and two lower levels are even Bar bilateral symmetry；The both ends of upper power output rod are symmetrically hinged with vertical connecting rod 37 isometric and directed downwardly, under upper vertical connecting rod End is hinged with isometric upper waling stripe 38, waling stripe bilateral symmetry on two；The lower waling stripe in left side and upper level are even It is hinged with left 39 both ends of center vertical connecting rod respectively between bar, between the lower waling stripe and upper waling stripe on right side respectively with the right side 40 both ends of center vertical connecting rod are hinged；The middle front part of two lower waling stripes it is symmetrical it is hinged on the rack, waling stripe on two Middle and back it is symmetrical hinged on the rack；Exert oneself to input pole length less than upper power output pole length, lower vertical length of connecting rod is less than Upper vertical length of connecting rod, lower horizontal length of connecting rod are greater than upper waling stripe length, and left center vertical length of connecting rod is equal to right centre Vertical length of connecting rod；Input lever of exerting oneself is connected on power input plate, and upper power output rod is connected on power output plate, and rack exists Power, which inputs between plate and power output plate, to be equipped with for lower waling stripe and the hinged support plate of upper waling stripe, and the power passes Sensor is connect with power output plate；Standard quality clump weight cooperation power transmission spring can guarantee that aid upper plate exports and give power enlarger For the power of structure without horizontal direction component, force amplificatory structure exports the power to force snesor without horizontal component, force snesor not torque suspension Influence improves accuracy；Second lever amplification principle is utilized in force amplificatory structure, lever uses symmetrical structure, can eliminate biography Horizontal direction component during power.

In the utility model embodiment, the quantity of the force amplificatory structure is three groups, and three groups of force amplificatory structure circumference are equal Cloth inputs the circumference of plate in power, which can expand load in such a way that three groups of identical second levers are in parallel Range, bottom capacityPower input lever be connected to one piece of power input plate, the power amplified needed for receiving, topmost It receivesPower output rod be connected to power output plate, the plate connect force snesor, export amplified power；When part to be measured The actual forces being loaded are more small, when being unable to reach the display precision of force snesor, in order to improve display precision, amplified by power Mechanism is shown on force snesor after amplifying to actual forces (required amplification power), to improve the precision of display, and can be with The range of amplification power (actual forces) needed for being adjusted by changing the quality of carrying standard quality clump weight, solves traditional power Measurement range often immobilizes, and when continuously measurement hardness differs biggish elastic-plastic material, device is often unable to satisfy and wants The problem of asking.

In the utility model embodiment, power suffered by final part corresponding deformation to be measured is F=G1+G2+G3+G4+f1+f2, Wherein: G1 is the gravity for accommodating upper plate；G2 is the gravity that power inputs plate；G3 is central plate, the horizontal slide rail, cunning for accommodating upper plate Piece, sliding slot gravity；F1 is the power of required amplification；F2 is power transmission spring gravity；G4 for the standard quality clump weight loaded weight Power, wherein the part connecting rod of force amplificatory structure also has the gravity being pressed on part to be measured, but more complicated due to analyzing, we can be with Using the method for the amplification factor under calibration sensor difference show value in advance.The method of calibration is not loaded with to part to be measured, directly It connects and is exerted oneself in input lever using known power f1 load in force amplificatory structure, the force snesor recorded under different power f1 is shown Value, force snesor show value is corresponding amplification factor divided by power f1.

The power f1 that force snesor show value amplifies needed for being divided by the corresponding amplification factor of calibration in measurement process is loaded, The range of the stress of part to be measured is adjusted in gravity G4 by changing carrying standard quality clump weight.

In the utility model embodiment, the deformation of part 42 to be measured is measured with strain-gauge transducer 41, be attached to Part circumference is surveyed, the stress-strain relation of part to be measured on different directions can be measured by changing its position.

A kind of detection method of the micro-displacement detection device for metal rubber material, sequentially including the following steps: (1) will be to Part is surveyed to be placed on the central plate of aid lower plate；(2) stepper motor rotation drives aid lower plate to move up vertically, and part aid to be measured is in two Between central plate；(3) continuation of aid lower plate moves up vertically, and part to be measured accommodates upper plate by compression-loaded, in loading procedure through compressing Power transmission spring drive input plate moves up, it is observed that the decrement of each power transmission spring, it is perpendicular to accommodate upper plate when decrement is consistent It directly moves up, is adjusted to unanimously when inconsistent by increasing standard quality clump weight, remain aid upper plate and move up vertically； (4) stepper motor stops working after being loaded into certain altitude, and the power of power input plate transmitting is through exertin enlarger in test process After structure amplification, force snesor is passed to fashion of extrusion through exertin output plate.

The utility model is not limited to above-mentioned preferred forms, anyone can obtain under the enlightenment of the utility model Other various forms of micro-displacement detection devices for metal rubber material out.It is all according to present utility model application the scope of the patents institute The equivalent changes and modifications done should all belong to the covering scope of the utility model.

Claims (9)

1. a kind of micro-displacement detection device for metal rubber material, it is characterised in that: horizontal in the rack including rack It is provided with and accommodates upper plate and aid lower plate, the aid upper plate top horizontal, which is arranged, effectively inputs plate, on the aid upper plate Several power transmission springs are evenly distributed between surface and power input plate lower surface, the side of the power transmission spring is all provided with useful In the graduated scale of instruction power transmission amount of spring compression, the aid upper plate is equipped in the installation site of each power transmission spring and is used for The glove notch of standard quality clump weight is placed, the aid lower plate drives lifting through the driving mechanism of bottom, under the aid Plate, which is equipped with, is vertically directed mechanism, is equipped with force snesor above the power input plate.

2. the micro-displacement detection device according to claim 1 for metal rubber material, it is characterised in that: the rack Including three vertical columns, the line between three vertical columns is equilateral triangle, and the circumference of the vertical columns is connected There is T-shaped upright slide rail, the edge of the aid lower plate is equipped with T-shaped vertical chute, and the upright slide rail is embedding Enter vertical chute to be slidably matched, the vertical chute and upright slide rail composition are vertically directed mechanism.

3. the micro-displacement detection device according to claim 1 for metal rubber material, it is characterised in that: the driving Mechanism includes stepper motor, and the lower surface of the aid lower plate is fixed with the screw shell of axis vertical, the screw shell Inside is equipped with internal screw thread, and the output shaft of the stepper motor is equipped with external screw thread, the output shaft and thread bush of the stepper motor Cylinder is internal to be spirally connected.

4. the micro-displacement detection device according to claim 1 for metal rubber material, it is characterised in that: the aid Upper plate and the middle part of aid lower plate offer that size is identical and square three-way groove that be vertically overlapped, four circumferential grooves of the square three-way groove T-shaped horizontal slide rail is equipped on wall, horizontal slide rail is made of two horizontal slide rails and two longitudinal slide rails, described rectangular logical The central plate for contact measured part is equipped on slot, the inside of the central plate is equipped with lateral through slot and longitudinal through slot, institute Stating lateral through slot, dislocation opens up up and down with longitudinal through slot；Lateral slide plate is equipped on the transverse direction through slot, it is described laterally sliding The both ends of piece are symmetrically arranged with T-shaped longitudinal chute, and the longitudinal chute is slidably matched with longitudinal slide rail；The longitudinal direction Longitudinal slide plate is equipped on through slot, the both ends of the longitudinal direction slide plate are symmetrically arranged with T-shaped horizontal concrete chute, the transverse direction Sliding slot is slidably matched with horizontal slide rail.

5. the micro-displacement detection device according to claim 1 for metal rubber material, it is characterised in that: the power transmission Spring sets the upper bush of cylinder chamber in including, and the upper bush bottom is equipped with cylinder chamber port, coaxial on the cylinder chamber port It is inserted with retracting cylinder, the apical grafting end face in cylinder chamber, the outer diameter of the apical grafting end face are installed at the top of the retracting cylinder Equal to cylinder chamber internal diameter, compressed spring, the aid upper plate upper surface are equipped between the apical grafting end face and cylinder chamber inner top Offer the cylinder shape groove for retracting cylinder insertion；The upper bush outer diameter is equal to cylinder shape groove internal diameter, the retracting cylinder Outer diameter is less than cylinder shape groove internal diameter, and the outer top of the upper bush and power input plate lower surface apical grafting, and graduated scale is set to The peripheral part of upper bush.

6. the micro-displacement detection device according to claim 5 for metal rubber material, it is characterised in that: the power transmission The quantity of spring is three, and the aid upper plate upper surface is fixed there are three upper plate convex block, and the cylinder shape groove is respectively positioned on On plate convex block.

7. the micro-displacement detection device according to claim 1 for metal rubber material, it is characterised in that: the glove Notch is respectively positioned on the underface of corresponding power transmission spring, the glove notch it is open towards outside portion.

8. the micro-displacement detection device according to claim 2 for metal rubber material, it is characterised in that: three fixations It is installed with a horizontal support plate right above column, first be located at below aid upper plate is installed between three vertical columns Support frame, the second support frame below power input plate, the first support frame and aid upper plate following table face contact when not pressurizeing It is temporarily supported, the second support frame upper surface contacts with power input plate and temporarily supported when not pressurizeing.

9. the micro-displacement detection device according to claim 1 for metal rubber material, it is characterised in that: the power is defeated Enter plate and connect strong output plate through force amplificatory structure, the force amplificatory structure include it is horizontal exert oneself input lever and upper power it is defeated Rod；The both ends for input lever of exerting oneself symmetrically are hinged with lower vertical connecting rod isometric and upward, and the upper end of lower vertical connecting rod is hinged There are isometric lower waling stripe, two lower waling stripe bilateral symmetries；The both ends of upper power output rod are symmetrically hinged with isometric and downward Upper vertical connecting rod, the lower end of upper vertical connecting rod is hinged with isometric upper waling stripe, waling stripe bilateral symmetry on two；It is left It is hinged with left center vertical connecting rod two end respectively between the lower waling stripe and upper waling stripe of side, the lower waling stripe on right side with It is hinged with right center vertical connecting rod two end respectively between upper waling stripe；The middle front part of two lower waling stripes is symmetrically hinged on machine On frame, on two the middle and back of waling stripe it is symmetrical hinged on the rack；It exerts oneself to input pole length and exports pole length less than upper power, Vertical length of connecting rod is less than upper vertical length of connecting rod down, and lower horizontal length of connecting rod is greater than upper waling stripe length, left center vertical Length of connecting rod is equal to right center vertical length of connecting rod；Input lever of exerting oneself is connected on power input plate, and upper power output rod is connected in Power exports on plate, and rack is inputted between plate and power output plate to be equipped with and be cut with scissors for lower waling stripe and upper waling stripe in power The support plate connect, the force snesor are connect with power output plate.