CN112033841A - Sand hardness meter capable of automatically detecting on line - Google Patents
Sand hardness meter capable of automatically detecting on line Download PDFInfo
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- CN112033841A CN112033841A CN202011206368.5A CN202011206368A CN112033841A CN 112033841 A CN112033841 A CN 112033841A CN 202011206368 A CN202011206368 A CN 202011206368A CN 112033841 A CN112033841 A CN 112033841A
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- fixing seat
- inner cavity
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- 239000004576 sand Substances 0.000 title claims abstract description 76
- 238000006073 displacement reaction Methods 0.000 claims abstract description 83
- 238000001514 detection method Methods 0.000 claims abstract description 53
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000005058 metal casting Methods 0.000 abstract description 8
- 238000007373 indentation Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
- G01N2203/0208—Specific programs of loading, e.g. incremental loading or pre-loading
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A sand hardness meter capable of on-line automatic detection belongs to the technical field of sand hardness meters and overcomes the problems that in the prior art, a sand hardness meter cannot stretch and retract due to insufficient pressure, the accurate measurement of indentation depth cannot be realized, and the on-line automatic detection of sand hardness cannot be realized, and is characterized in that a displacement sensor fixing seat is arranged in a lower shell, a displacement sensor is arranged in an inner cavity of the displacement sensor fixing seat, a telescopic pressure foot is arranged in the telescopic pressure foot, a pressure head is arranged in the telescopic pressure foot, the left end of the pressure head is fixedly connected with a movable iron core of the displacement sensor, a pressure foot return spring is arranged at the left end of the telescopic pressure foot, a first photoelectric switch and a second photoelectric switch are respectively arranged on the upper surface of the lower shell, and the sand hardness meter has the advantages that the technical problems that the accurate measurement of indentation depth and the telescopic pressure foot can be solved, and is connected with a mechanical, the automatic detection is realized under the driving of the mechanical arm of the robot, and the automatic production requirement of the metal casting product is met.
Description
Technical Field
The invention belongs to the technical field of sand mold hardometers, and particularly relates to a sand mold hardometer capable of automatically detecting on line.
Background
The sand mold hardness tester is used for detecting the surface hardness of the casting sand mold, thereby providing technical parameters for controlling the quality of casting products and optimizing the sand mold manufacturing process. The existing sand mold hardness tester is handheld, an operator is required to hold the sand mold hardness tester during use, a foot pressing plane in the front of the hardness tester is in contact with the surface of a tested sand mold, the axis of the hardness tester is perpendicular to the surface of the sand mold and applies force, when the foot pressing plane is in close contact with the surface of the tested sand mold, and a pointer stops swinging, a locking pin is pressed down to lock the position of the pointer, the operator visually reads the measured hardness value, and then the locking pin is loosened to enable the pointer to recover to a zero position. The hardness tester is inconvenient to operate, inconvenient to read, high in accuracy and incapable of realizing online automatic detection of the hardness of the sand mold and meeting the requirements of automatic production of metal casting products, and artificial influence factors are more.
The utility model with the application number of CN201520124367.4 discloses a sand mold surface hardness tester capable of amplifying the scale of a dial, which comprises a shell, a pointer, a plane mirror and the dial, wherein a convex lens capable of amplifying the scale of the dial and the reading of the pointer is arranged outside the plane mirror; the convex lens is set to one of four magnification factors of 2 times, 4 times, 6 times and 8 times. The utility model discloses a what solve is that the calibrated scale of current sand mould surface hardness meter is little and the reading typeface is little, and the reading is inconvenient, especially detects the reading of hardly seeing the testing result during darker, comparatively complicated sand mould die cavity surface hardness, brings inconvenient problem for testing work, makes sand mould die cavity surface hardness testing result reading clear. However, according to the description of the utility model, the utility model is still handheld in nature and is the sand hardness meter that the pointer instructed, can not realize the online automated inspection of sand hardness, can not adapt to the needs of metal casting product automated production.
The utility model with the application number of CN201520121403.1 discloses a digital display sand mold surface hardness meter, which is provided with a first round hole and a second round hole on the horizontal central axis of a shell, wherein a left end pressure head of a pressure head body in the second round hole passes through the first round hole and extends out of the left end surface of the shell, a return spring is arranged on the right end cylindrical outer diameter of the pressure head body, the right end of the return spring is fixed on an induction disc at the left end of a pressure sensor, and the right end of the pressure sensor is connected with a circuit board at the left end of an intelligent circuit module; the right end of the intelligent circuit module is provided with a jack for inserting a transmission line plug; the plug at the right end of the transmission line is inserted into the jack of the display screen, and the digital signal converted by the intelligent circuit module is transmitted to the display screen. The utility model solves the problems that the scale of the dial plate of the prior sand mold surface hardness meter is small, the reading character is small and is difficult to read, and is only suitable for the hardness detection of the surface of a sand mold cavity with a short distance and a shallow pit, and for the hardness detection of the surface of a sand mold cavity with a longer distance and a deeper pit, because the light in the cavity is dim, the reading of the detection result cannot be clearly seen at all, which brings great inconvenience to the inspection work and seriously affects the quality control of the product, in addition, through carefully reading the specification of the utility model, the utility model is also a hand-held pointer type sand mold hardness tester essentially, and only transmits the digital signal converted by the intelligent circuit module to the display screen through a transmission line of 1-3 meters, the detection result can be clearly seen through the display screen, the online automatic detection of the hardness of the sand mold can not be realized, and the requirements of the automatic production of metal casting products can not be met.
The utility model with the application number of CN201721685760.6 discloses a wireless transmission type digital display sclerometer, including shell, the electronic dial plate that is located one side of the shell top, the hardness test rod that is located the shell bottom, the shell internally mounted has electronic conversion equipment, the controller is installed at the electronic conversion equipment top, folding support is installed to shell bottom one side, the shell internally mounted has the connection hardness test rod with electronic conversion equipment's transfer bar, this utility model converts the hardness value on object surface into electronic data through electronic conversion equipment and shows, and can carry out wireless transmission to data through bluetooth, has improved the degree of accuracy of hardness data record, has improved the record efficiency of hardness data; through folding the setting folding support, can with under shell integrated into one piece's the prerequisite through with the stabilizer blade is folding, and quick accomodating equipment has improved the convenience of accomodating efficiency and accomodating the operation. However, this utility model is only one turn into the hardness number on sand mould surface through electronic conversion equipment and show to can carry out wireless transmission's device to data through bluetooth, not explain the structure of sclerometer itself, can know according to the record of its specification, this utility model the sclerometer also is a hand-held type sclerometer, can not realize the online automated inspection of sand mould hardness number, can not adapt to the needs of metal casting product automated production.
In order to realize the on-line automatic detection of the hardness value of the sand mold and meet the requirement of the automatic production of metal casting products, the applicant designs a sand mold hardness meter capable of realizing on-line automatic detection, in the process, the pressure foot of the hand-held sand hardness meter in the prior art is not telescopic, and the structure is applied to the automatic detection of a robot, because the movement of the robot mechanical arm has a certain positioning error, if the pressure foot is not telescopic, when the position of the pressure foot is positively deviated, the pressure foot can be pressed into the surface of the sand mould to damage the sand mould, when the position of the pressure foot is negatively deviated, the presser foot does not come into close contact with the surface of the sand mold, so that problems of inability to measure or inaccuracy of measurement occur, how to guarantee both to realize the in close contact with on sand mould surface of presser foot, can not make the presser foot impress the sand mould surface again, damage the sand mould, become a key technical problem that online automated inspection sand mould sclerometer need solve.
Disclosure of Invention
The invention aims to solve the problems that the defects and defects of the prior art are overcome, the technical problems that the indentation depth is accurately measured and the pressing foot can stretch and retract are solved, and the sand hardness tester capable of being installed on a manipulator is provided, so that the online automatic detection of the sand hardness is realized, and the automatic production requirements of metal casting products are met.
The technical scheme includes that the device comprises an upper shell, a lower shell, a pressure foot, a pressure head, a loading spring and a circuit board, wherein the upper shell is fixedly connected with the lower shell, the pressure foot is installed in the lower shell, the loading spring is sleeved at the left end of the pressure head, the circuit board is installed in the upper shell, a displacement sensor is installed in the lower shell, the pressure foot is a telescopic pressure foot, the pressure head is installed in the telescopic pressure foot, the left end of the pressure head is fixedly connected with a movable iron core of the displacement sensor, the left end of the telescopic pressure foot is provided with a pressure foot return spring, and a first photoelectric switch and a second photoelectric switch are respectively installed on the upper surface of the lower shell.
The displacement sensor is characterized in that a displacement sensor fixing seat is installed in the lower shell, the displacement sensor is installed in an inner cavity of the displacement sensor fixing seat, a pressure foot return spring is sleeved on the outer circumference of the displacement sensor fixing seat, a first detection guide block is connected to the pressure foot, and a second detection guide block is connected to the displacement sensor fixing seat.
The first detection guide block is T-shaped, the first detection guide block of the T-shaped is connected to the pressure foot through 2 fifth screws, the second detection guide block is L-shaped, the second detection guide block of the L-shaped is connected to the displacement sensor fixing seat through 2 fourth screws, and a buffer spring is further mounted at the left end of the displacement sensor fixing seat.
The inner chamber of casing is the ladder shape down, by right left be casing first step inner chamber down in proper order, casing second step inner chamber and casing third step inner chamber down, the inner wall of casing second step inner chamber forms the slip track of first detection guide block down, the inner wall of casing third step inner chamber forms the slip track of second detection guide block down, casing second step inner chamber installs the solid fixed ring of step return spring down, the circular bead of casing first step inner chamber is right down the step return spring slides and carries on spacingly, the circular bead of casing second step inner chamber carries on spacingly to the solid fixed ring's of step return spring installation down, the circular bead of casing third step inner chamber slides displacement sensor fixing base right down and carries on spacingly, the inner chamber of telescopic step return is tertiary ladder shape, by right left be step return spring first step inner chamber of step return in proper order, The inner wall of the first step inner cavity of the pressure foot forms a sliding track of the pressure head, the inner wall of the third step inner cavity of the pressure foot forms a sliding track of the right end of a displacement sensor fixing seat, the pressure foot is guided by a first detection guide block to be followed by the inner wall of the second step inner cavity of the lower shell to slide in a telescopic mode, and the displacement sensor fixing seat is guided by a second detection guide block to be followed by the left end of the lower shell to be followed by the inner wall and the right end of the third step inner cavity of the lower shell to slide in a telescopic mode.
A first threaded hole is processed at the right end of the displacement sensor fixing seat, a T-shaped nut is in threaded connection with the first threaded hole, the left end of the pressure head penetrates through a center hole of the T-shaped nut to be fixedly connected with a movable iron core of the displacement sensor, the precompression amount of the loading spring is adjusted by adjusting the position of the T-shaped nut, a pressure head limiting block is further installed in the displacement sensor fixing seat, a second threaded hole is processed at the outer circumference of the right end of the displacement sensor fixing seat, a first locking screw is installed in the second threaded hole and tightly pressed against the outer circumference of the T-shaped nut, and relative rotation between the displacement sensor fixing seat and the T-shaped nut is prevented; and a third threaded hole is processed in the outer circumference of the left end of the displacement sensor fixing seat, a second locking screw is installed in the third threaded hole, and the second locking screw is tightly propped against the outer circumference of the shell of the displacement sensor to prevent relative movement between the displacement sensor fixing seat and the shell of the displacement sensor.
The robot comprises an upper shell and a lower shell, and is characterized in that a communication physical interface is installed on the upper end face of the upper shell, a thin film key panel is bonded on the front surface of the upper shell, an operation key is installed on the thin film key panel, a display screen is arranged on the thin film key panel, and a threaded hole used for being connected with a mechanical arm of a robot is formed in the left end face of the upper shell.
The circuit board comprises a microprocessor, and the first photoelectric switch, the second photoelectric switch, the operation keys, the display screen, the displacement sensor and the communication physical interface are respectively connected with the microprocessor.
The upper surface of the lower shell is respectively provided with a first adjusting plate and a second adjusting plate, the first photoelectric switch is arranged on the first adjusting plate, and the second photoelectric switch is arranged on the second adjusting plate.
Compared with the prior art, the invention solves the technical problems of accurate measurement of indentation depth and telescopic foot pressing, and provides the sand mold hardness tester capable of being installed on the manipulator for online automatic detection, thereby realizing online automatic detection of sand mold hardness, adapting to the automatic production requirement of metal casting products, and having the following beneficial effects:
(1) when the device is used, a threaded hole which is arranged on the left end face of an upper shell and used for being connected with a mechanical arm of a robot is connected with the mechanical arm of the robot, automatic detection is realized under the driving of the mechanical arm of the robot, the movement of a hardness meter is controlled by an upper computer of an automatic system to measure the hardness, a displacement sensor is used for accurately measuring the displacement of a pressure head representing the indentation depth, a microprocessor is used for receiving signals of the displacement sensor to calculate the accurate hardness value of a sand mold, a first photoelectric switch and a second photoelectric switch are used for obtaining signals for starting measurement and finishing measurement, the detection of the hardness of the cast sand mold is automatically finished, and measurement data are uploaded to the upper computer in real time for the automatic system to store and analyze and automatically display;
(2) the telescopic press foot is adopted, the press foot is guided by the first detection guide block to slide along the inner wall of the second step inner cavity of the lower shell in a telescopic mode and can buffer under the action of the press foot return spring, so that the positioning error caused when the robot mechanical arm drives the press foot to position on the surface of a sand mold is eliminated, the self-adaption of the press foot to the surface of the sand mold is realized, the press foot is in close contact with the surface of the sand mold, and the press foot is prevented from being pressed into the surface of the sand mold to damage the sand mold;
(3) the pressure head slides in the telescopic pressure foot in a telescopic mode, after the telescopic pressure foot is contacted with the surface of a sand mold and accurate positioning of stress application is carried out in a self-adaptive mode, stress application is continued, the pressure head gradually extends out and is pressed into the surface of the sand mold, and online automatic measurement of hardness of the sand mold is completed;
(4) the buffer spring arranged on the left end face of the fixed seat of the displacement sensor can play a role in buffering the stress application process of the pressure head, realizes flexible stress application, can avoid damage to the surface of a sand mold due to excessive stress application, and ensures the stability and reliability of online automatic detection of the hardness of the sand mold.
(5) The inner cavity of the telescopic press foot is in a three-level step shape and sequentially comprises a first press foot step inner cavity, a second press foot step inner cavity and a third press foot step inner cavity from right to left, the inner cavity of the lower shell is also in a step shape and sequentially comprises a first lower shell step inner cavity, a second lower shell step inner cavity and a third lower shell step inner cavity from right to left, the inner wall of the first press foot step inner cavity forms a sliding rail of a press head, the inner wall of the third press foot step inner cavity forms a sliding rail at the right end of a displacement sensor fixing seat, the inner wall of the second lower shell step inner cavity forms a sliding rail of a first detection guide block, the inner wall of the third lower shell step inner cavity forms a sliding rail of a second detection guide block, and the press foot is guided by the first detection guide block to slide along the inner wall of the second lower shell step inner cavity in a telescopic way, the displacement sensor fixing seat slides along the inner wall of the third step inner cavity of the lower shell in a telescopic manner at the left end and the right end under the guide of the second detection guide block along the inner wall of the pressing-foot third step inner cavity.
Drawings
Figure 1 is a front view of the present invention,
figure 2 is a left side view of figure 1,
figure 3 is a top view of figure 1,
figure 4 is an enlarged cross-sectional view a-a of figure 3,
figure 5 is an enlarged cross-sectional view B-B of figure 1,
fig. 6 is a schematic diagram of the electrical control principle of the present invention.
In the figure:
1-1, an upper shell, 1-1-1, a threaded hole,
1-2. a lower shell body,
2. a pressure foot, 3, a displacement sensor fixing seat,
4. a pressure head, 5T-shaped nuts, 6 pressure foot return springs, 7 displacement sensors,
8-1, a first photoelectric switch, 8-2, a second photoelectric switch,
9. a buffer spring, 10, a loading spring,
11-1, a first detection guide block, 11-2, a second detection guide block,
12. a physical interface for communication is provided, and the communication,
13-1, a first adjusting plate, 13-2, a second adjusting plate,
14. a pressure head limiting block, 15, a first locking screw, 16, a second locking screw,
17. a thin film key panel, 17-1 operating keys, 17-2 display screens,
18. circuit board, 18-1, microprocessor, 19, fourth screw,
20. a second screw, 21, a fifth screw,
22. a pressure foot return spring fixing ring, 23, a first screw.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the invention adopts a technical scheme that the invention comprises an upper shell 1-1 and a lower shell 1-2, the upper shell 1-1 and the lower shell 1-2 are fixedly connected through a first screw 23 and a second screw 20, a pressure foot 2 and a displacement sensor 7 are installed in the lower shell 1-2, the pressure foot 2 is a telescopic pressure foot, a pressure head 4 is installed in the telescopic pressure foot 2, the left end of the pressure head 4 is fixedly connected with a movable iron core of the displacement sensor 7, the movable iron core of the displacement sensor 7 is driven to move by the movement of the pressure head 4, a loading spring 10 is sleeved at the left end of the pressure head 4, a pressure foot return spring 6 is installed at the left end of the telescopic pressure foot 2, a first photoelectric switch 8-1 and a second photoelectric switch 8-2 are respectively installed on the lower shell 1-2, a circuit board 18 is also mounted in the upper case 1-1;
furthermore, a displacement sensor fixing seat 3 is installed in the lower shell 1-2, the displacement sensor 7 is installed in an inner cavity of the displacement sensor fixing seat 3, the foot-pressing return spring 6 is sleeved on the outer circumference of the displacement sensor fixing seat 3, 2 fifth screws 21 are connected to the foot pressing 2 through T-shaped first detection guide blocks 11-1, 2 fourth screws 19 are connected to the displacement sensor fixing seat 3 through L-shaped second detection guide blocks 11-2, and a buffer spring 9 is installed at the left end of the displacement sensor fixing seat 3;
furthermore, the inner cavity of the lower shell 1-2 is in a step shape and sequentially comprises a first step inner cavity of the lower shell, a second step inner cavity of the lower shell and a third step inner cavity of the lower shell from right to left, the inner wall of the second step inner cavity of the lower shell forms a sliding track of the first detection guide block 11-1, the inner wall of the third step inner cavity of the lower shell forms a sliding track of the second detection guide block 11-2, a foot-pressing return spring fixing ring 22 is installed in the second step inner cavity of the lower shell, and the foot-pressing return spring fixing ring 22 is fixed on the lower shell 1-2 through screws; the shoulder of the lower shell first step inner cavity limits the telescopic pressure foot 2 to slide rightwards, the shoulder of the lower shell second step inner cavity limits the installation of the pressure foot return spring fixing ring 22, and the shoulder of the lower shell third step inner cavity limits the displacement sensor fixing seat 3 to slide rightwards; the inner cavity of the telescopic pressure foot 2 is in a three-level step shape and sequentially comprises a pressure foot first step inner cavity, a pressure foot second step inner cavity and a pressure foot third step inner cavity from right to left, a pressure head 4 is installed in the pressure foot first step inner cavity, the inner wall of the pressure foot first step inner cavity forms a sliding rail of the pressure head 4, the inner wall of the pressure foot third step inner cavity forms a sliding rail at the right end of a displacement sensor fixing seat 3, the telescopic pressure foot 2 slides telescopically along the inner wall of the lower shell second step inner cavity under the guidance of a first detection guide block 11-1, the left end of the displacement sensor fixing seat 3 slides telescopically along the inner wall and the right end of the lower shell third step inner cavity under the guidance of a second detection guide block 11-2;
a first threaded hole is processed at the right end of the displacement sensor fixing seat 3, a T-shaped nut 5 is in threaded connection with the first threaded hole, the left end of the pressure head 4 penetrates through a center hole of the T-shaped nut 5 to be fixedly connected with a movable iron core of the displacement sensor 7, the pre-compression amount of the loading spring 10 is adjusted by adjusting the position of the T-shaped nut 5, a pressure head limiting block 14 is further installed in the displacement sensor fixing seat 3, a second threaded hole is processed on the outer circumference of the right end of the displacement sensor fixing seat 3, a first locking screw 15 is installed in the second threaded hole, and the first locking screw 15 is tightly pressed against the outer circumference of the T-shaped nut 5 to prevent relative rotation between the displacement sensor fixing seat 3 and the T-shaped nut 5; a third threaded hole is processed on the outer circumference of the left end of the displacement sensor fixed seat 3, a second locking screw 16 is installed in the third threaded hole, and the second locking screw 16 is tightly pressed against the outer circumference of the shell of the displacement sensor 7 to prevent the relative movement between the displacement sensor fixed seat 3 and the shell of the displacement sensor 7;
a communication physical interface 12 is installed on the upper end face of the upper shell 1-1, a thin film key panel 17 is bonded on the front surface of the upper shell 1-1, an operation key 17-1 and a display screen 17-2 are arranged on the thin film key panel 17, and a threaded hole 1-1-1 for connecting with a robot mechanical arm is formed in the left end face of the upper shell 1-1;
the circuit board 18 comprises a microprocessor 18-1, and the first photoelectric switch 8-1, the second photoelectric switch 8-2, the operation key 17-1, the display screen 17-2, the displacement sensor 7 and the communication physical interface 12 are respectively connected with the microprocessor 18-1;
a first adjusting plate 13-1 and a second adjusting plate 13-2 are respectively installed on the lower shell 1-2, the first photoelectric switch 8-1 is installed on the first adjusting plate 13-1, and the second photoelectric switch 8-2 is installed on the second adjusting plate 13-2.
When the device is used, the device is connected with a robot mechanical arm through a threaded hole 1-1-1 of an upper shell 1-1, a communication physical interface 12 is in communication connection with the outside, automatic operation is realized under the driving of the robot mechanical arm, when automatic detection is carried out, the robot mechanical arm drives the device to move to a position of a sand mold to be detected on a production line, firstly, a telescopic pressure foot 2 is in contact with the surface of the sand mold to be detected, the telescopic pressure foot 2 retracts towards the left side, a first photoelectric switch 8-1 sends a measuring starting signal, a pressure foot return spring 6 is compressed, when the telescopic pressure foot 2 is tightly connected with the surface of the sand mold, a pressure head 4 gradually extends out and is pressed into the surface of the sand mold, according to the difference of hardness of the sand mold, the pressure head 4 overcomes the testing force of a loading spring 10 while being pressed into the surface of the sand mold, a partial distance is retracted, at the moment, a second photoelectric switch 8, the backspacing movement of the pressure head 4 drives the moving iron core of the displacement sensor 7 to move, the backspacing distance is measured by the displacement sensor 7, the backspacing displacement of the pressure head measured by the displacement sensor 7 is calculated by the microprocessor 18-1 to obtain the hardness value of the sand mold, the hardness value of the sand mold is automatically displayed on the display screen 17-2, and the measured hardness value of the sand mold is transmitted to an external control system through the communication physical interface 12.
Claims (8)
1. A sand mold hardness tester capable of automatically detecting on line comprises an upper shell (1-1), a lower shell (1-2), a pressure foot (2), a pressure head (4), a loading spring (10) and a circuit board (18), wherein the upper shell (1-1) is fixedly connected with the lower shell (1-2), the pressure foot (2) is installed in the lower shell (1-2), the loading spring (10) is sleeved at the left end of the pressure head (4), the circuit board (18) is installed in the upper shell (1-1), the sand mold hardness tester is characterized in that a displacement sensor (7) is installed in the lower shell (1-2), the pressure foot (2) is a telescopic pressure foot, the pressure head (4) is installed in the telescopic pressure foot (2), the left end of the pressure head (4) is fixedly connected with a movable iron core of the displacement sensor (7), a pressure foot return spring (6) is installed at the left end of the telescopic pressure foot (2), a first photoelectric switch (8-1) and a second photoelectric switch (8-2) are respectively arranged on the lower shell (1-2).
2. The sand mold hardness tester capable of automatically detecting on line according to claim 1, wherein a displacement sensor fixing seat (3) is installed in the lower shell (1-2), the displacement sensor (7) is installed in an inner cavity of the displacement sensor fixing seat (3), the foot pressing return spring (6) is sleeved on the outer circumference of the displacement sensor fixing seat (3), the foot pressing (2) is connected with a first detection guide block (11-1), and the displacement sensor fixing seat (3) is connected with a second detection guide block (11-2).
3. An on-line automatic detection sand mold hardness tester according to claim 2, wherein the first detection guide block (11-1) is T-shaped, the T-shaped first detection guide block (11-1) is connected to the pressure foot (2) by 2 fifth screws (21), the second detection guide block (11-2) is L-shaped, the L-shaped second detection guide block (11-2) is connected to the displacement sensor fixing seat (3) by 2 fourth screws (19), and a buffer spring (9) is installed at the left end of the displacement sensor fixing seat (3).
4. The sand mold hardness tester capable of automatically detecting on line according to claim 2, wherein the inner cavity of the lower shell (1-2) is in a stepped shape, and the lower shell first stepped inner cavity, the lower shell second stepped inner cavity and the lower shell third stepped inner cavity are sequentially arranged from right to left, the inner wall of the lower shell second stepped inner cavity forms a sliding track of the first detection guide block (11-1), the inner wall of the lower shell third stepped inner cavity forms a sliding track of the second detection guide block (11-2), the pressing foot return spring fixing ring (22) is installed in the lower shell second stepped inner cavity, the shoulder of the lower shell first stepped inner cavity is right for limiting the pressing foot (2) to slide rightwards, the shoulder of the lower shell second stepped inner cavity is limiting the installation of the pressing foot return spring fixing ring (22), and the shoulder of the lower shell third stepped inner cavity limits the right sliding of the displacement sensor fixing seat (3) Position, the inner chamber of telescopic presser foot (2) is tertiary ladder shape, by right-left in proper order for presser foot first step inner chamber, presser foot second step inner chamber and presser foot third step inner chamber install pressure head (4) in the presser foot first step inner chamber, the inner wall of presser foot first step inner chamber forms the slip track of pressure head (4), the inner wall of presser foot third step inner chamber forms the slip track of displacement sensor fixing base (3) right-hand member, along under the first direction that detects guide block (11-1) presser foot (2) the inner wall of casing second step inner chamber slides telescopically down, displacement sensor fixing base (3) detect the lower left end of guide block (11-2) at the second and follow inner wall, the right-hand member of casing third step inner chamber are followed down the inner wall of presser foot third step inner chamber slides telescopically.
5. The sand mold hardness tester capable of automatically detecting on line according to claim 2, wherein a first threaded hole is processed at the right end of the displacement sensor fixing seat (3), a T-shaped nut (5) is in threaded connection with the first threaded hole, the left end of the pressure head (4) passes through a central hole of the T-shaped nut (5) and is fixedly connected with a movable iron core of the displacement sensor (7), the pre-compression amount of the loading spring (10) is adjusted by adjusting the position of the T-shaped nut (5), a pressure head limiting block (14) is further installed in the displacement sensor fixing seat (3), a second threaded hole is processed at the outer circumference of the right end of the displacement sensor fixing seat (3), a first locking screw (15) is installed in the second threaded hole, and the first locking screw (15) is tightly pressed against the outer circumference of the T-shaped nut (5), the displacement sensor fixing seat (3) and the T-shaped nut (5) are prevented from rotating relatively; and a third threaded hole is processed in the outer circumference of the left end of the displacement sensor fixed seat (3), a second locking screw (16) is installed in the third threaded hole, and the second locking screw (16) is tightly pressed against the outer circumference of the shell of the displacement sensor (7) to prevent the relative movement between the displacement sensor fixed seat (3) and the shell of the displacement sensor (7).
6. The sand mold hardness tester capable of automatically detecting on line according to claim 1 or 2, wherein a communication physical interface (12) is installed on the upper end face of the upper shell (1-1), a membrane key panel (17) is adhered to the front surface of the upper shell (1-1), an operation key (17-1) and a display screen (17-2) are arranged on the membrane key panel (17), and a threaded hole (1-1-1) for connecting with a robot mechanical arm is formed in the left end face of the upper shell (1-1).
7. An on-line automatic detection sand mold hardness tester according to claim 6, wherein the circuit board (18) comprises a microprocessor (18-1), and the first photoelectric switch (8-1), the second photoelectric switch (8-2), the operation keys (17-1), the display screen (17-2), the displacement sensor (7) and the communication physical interface (12) are respectively connected with the microprocessor (18-1).
8. An on-line automatic detection sand mold hardness tester according to claim 1 or 2, wherein a first adjusting plate (13-1) and a second adjusting plate (13-2) are respectively installed on the upper surface of the lower casing (1-2), the first photoelectric switch (8-1) is installed on the first adjusting plate (13-1), and the second photoelectric switch (8-2) is installed on the second adjusting plate (13-2).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607583A (en) * | 2021-08-03 | 2021-11-05 | 安徽雨润仪表电缆有限公司 | Accurate toper instrument uses detection and processing equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587050A (en) * | 2009-07-20 | 2009-11-25 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | Novel high-precision electric electronic Brinell hardness tester |
| CN204405463U (en) * | 2015-03-03 | 2015-06-17 | 罗建华 | A kind of digital display hardness of sand mould surface meter |
| CN104913991A (en) * | 2014-03-14 | 2015-09-16 | 天津联捷塑料制品有限公司 | Novel shore durometer |
| CN205719836U (en) * | 2016-04-01 | 2016-11-23 | 嘉善耐博精密仪器有限公司 | A kind of automatic convex full Rockwell apparatus of nose formula |
| KR20170128787A (en) * | 2016-05-13 | 2017-11-24 | 서강대학교산학협력단 | Stiffness scanning apparatus |
| CN209727668U (en) * | 2019-02-21 | 2019-12-03 | 上海奥龙星迪检测设备有限公司 | A kind of bolt class product Rockwell hardness automatic detection device |
-
2020
- 2020-11-03 CN CN202011206368.5A patent/CN112033841B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587050A (en) * | 2009-07-20 | 2009-11-25 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | Novel high-precision electric electronic Brinell hardness tester |
| CN104913991A (en) * | 2014-03-14 | 2015-09-16 | 天津联捷塑料制品有限公司 | Novel shore durometer |
| CN204405463U (en) * | 2015-03-03 | 2015-06-17 | 罗建华 | A kind of digital display hardness of sand mould surface meter |
| CN205719836U (en) * | 2016-04-01 | 2016-11-23 | 嘉善耐博精密仪器有限公司 | A kind of automatic convex full Rockwell apparatus of nose formula |
| KR20170128787A (en) * | 2016-05-13 | 2017-11-24 | 서강대학교산학협력단 | Stiffness scanning apparatus |
| CN209727668U (en) * | 2019-02-21 | 2019-12-03 | 上海奥龙星迪检测设备有限公司 | A kind of bolt class product Rockwell hardness automatic detection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607583A (en) * | 2021-08-03 | 2021-11-05 | 安徽雨润仪表电缆有限公司 | Accurate toper instrument uses detection and processing equipment |
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Effective date of registration: 20240111 Address after: No. 17-1 Wensu street, Hunnan District, Shenyang City, Liaoning Province Patentee after: Shenyang Tianxing Test Instrument Co.,Ltd. Address before: No.17-13, Wensu street, Hunnan District, Shenyang City, Liaoning Province Patentee before: Shenyang Tianxing intelligent testing equipment Co.,Ltd. |