CN115586097A - Equipment for calibrating indentation depth measuring device of metal Rockwell hardness tester - Google Patents
Equipment for calibrating indentation depth measuring device of metal Rockwell hardness tester Download PDFInfo
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- CN115586097A CN115586097A CN202211216472.1A CN202211216472A CN115586097A CN 115586097 A CN115586097 A CN 115586097A CN 202211216472 A CN202211216472 A CN 202211216472A CN 115586097 A CN115586097 A CN 115586097A
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- magnetic base
- rod
- rockwell hardness
- measuring device
- indentation depth
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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
- G01N3/62—Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups
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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
- G01N3/44—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid the indentors being put under a minor load and a subsequent major load, i.e. Rockwell system
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The application belongs to aviation electrical metering field, concretely relates to an equipment that is used for calibration of metal rockwell hardness meter indentation degree of depth measuring device. The apparatus comprises: the magnetic base (1) is provided with a lower base plate and an upper base plate, and a groove space with a lateral opening is formed between the upper base plate and the lower base plate; the ejector rod (3) is arranged in a through hole of an upper bottom plate of the magnetic base (1) in a sliding mode, the top end of the ejector rod (3) is located above the upper base, and the bottom end of the ejector rod (3) is located in the groove space; the displacement measuring rod (5) is supported on an upper base plate of the magnetic base (1) through the top column (6), a first end, located on one side of the top column (6), of the displacement measuring rod (5) is hinged to the bottom end of the top rod (3), and a force application device and a measuring device are respectively in compression joint with the upper portion of the other side of the top column (6). The application provides an equipment structure for calibration of metal rockwell hardness tester indentation degree of depth measuring device simple, and the volume is less, portable.
Description
Technical Field
The utility model belongs to aviation electrical measurement field, concretely relates to an equipment that is used for calibration of metal rockwell hardness meter indentation degree of depth measuring device.
Background
According to JJG 112 "Metal Rockwell hardness tester (scales A, B, C, D, E, F, G, H, K, N, T)" test procedure, GB/T230.2 "part 2 of Rockwell hardness test of Metal materials: the testing and calibration of the Hardness tester (scales A, B, C, D, E, F, G, H, K, N, T) and the technical documentation of ASTM E18 Standard Test Methods for Rockwell Hardness of Metallic Materials require the verification or calibration of the indentation measuring device of a Metallic Rockwell Hardness tester. Because the error requirement on calibration equipment is high (MPE = +/-2 mu m), displacement sensors are mostly used in the conventional verification and calibration equipment, and a digital display meter is required to be matched for use, so that the structure is complex, the size is large, and the field verification/calibration carrying and use are inconvenient.
Disclosure of Invention
In order to solve the above problems, the present application provides an apparatus for calibrating an indentation depth measuring device of a metal rockwell hardness tester, for calibrating the indentation depth measuring device of the metal rockwell hardness tester.
The application provides an equipment that is used for metal rockwell hardness meter indentation depth measuring device to calibrate mainly includes:
the magnetic base is detachably fixed on an anvil block of the metal Rockwell hardness tester and is provided with a lower bottom plate and an upper bottom plate, and a groove space with a lateral opening is formed between the upper bottom plate and the lower bottom plate;
the top end of the ejector rod is positioned above the upper base and is used for contacting a pressure head of the metal Rockwell hardness tester, and the bottom end of the ejector rod is positioned in the groove space;
the displacement measuring rod is supported on the upper base plate of the magnetic base through the ejection column and located in the groove space, the first end, located on one side of the ejection column, of the displacement measuring rod is hinged to the bottom end of the ejection rod, the other side, located on the other side of the ejection column, of the ejection column is respectively in compression joint with the force application device and the measuring device, the force application device comprises a shifting wheel and a precise screw rod rotationally controlled by the shifting wheel, the bottom end of the axial movement of the precise screw rod is in compression joint with the top of the displacement measuring rod, the measuring device comprises a dial indicator, and a measuring head of the dial indicator is in compression joint with the top of the displacement measuring rod.
Preferably, a knob is arranged on the magnetic base, the magnetic base is controlled by the knob to be magnetized or demagnetized, and the magnetic base is adsorbed on the anvil block through magnetism.
Preferably, the top end of the ejector rod is provided with an ejector cap.
Preferably, the dial indicator is installed on the upper bottom plate of the magnetic base through screws.
Preferably, the thumb wheel is located in a notch formed in the upper base plate of the magnetic base and is provided with a poking part protruding out of the notch, the precision screw is arranged in a vertical through hole formed in the upper base plate of the magnetic base and is meshed with the thumb wheel gear, and the precision screw moves up and down by rotating the thumb wheel.
Preferably, the transmission ratio of the thumb wheel to the precision screw is 1.
Preferably, the precision screw, the top pillar, and the jack form a lever mechanism that drives the displacement measuring rod, and the distance between points at which the precision screw, the top pillar, and the jack contact the displacement measuring rod is configured to: when the thumb wheel rotates for one circle, the up-and-down movement of the ejector rod is not more than 0.05mm.
Preferably, the top rod is slidably disposed in the through hole of the upper bottom plate of the magnetic base through a linear bearing.
The application provides an equipment structure for calibration of metal rockwell hardness tester indentation degree of depth measuring device simple, and the volume is less, portable.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the apparatus for calibrating an indentation depth measuring device of a metal Rockwell hardness tester according to the present application.
1-a magnetic base, 2-a knob, 3-a mandril, 4-a top cap, 5-a displacement measuring rod, 6-a mandril, 7-a thumb wheel, 8-a precision screw and 9-a dial indicator.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are implementations that are part of this application and not all implementations. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.
The application provides an equipment that is used for calibration of metal rockwell hardness meter indentation depth measuring device, as shown in fig. 1, mainly includes:
the device comprises a magnetic base 1 and a control device, wherein the magnetic base 1 is detachably fixed on an anvil block of a metal Rockwell hardness tester, the magnetic base 1 is provided with a lower bottom plate and an upper bottom plate, and a laterally open groove space is formed between the upper bottom plate and the lower bottom plate;
the ejector rod 3 is arranged in a through hole of an upper base plate of the magnetic base 1 in a sliding mode, the top end of the ejector rod 3 is located above the upper base and used for being in contact with a pressure head of a metal Rockwell hardness tester, and the bottom end of the ejector rod 3 is located in the groove space;
Referring to fig. 1, the left end of displacement measurement pole 5 articulates in the bottom of ejector pin 3 through the pivot, displacement measurement pole 5 is supported in the below to the fore-set 6, accurate screw rod 8 pushes down the contact in the top of displacement measurement pole 5 in the right side, thereby make displacement measurement pole 5 regard fore-set 6 as the strong point, constitute lever mechanism, the equipment that is used for the calibration of metal rockwell hardness meter indentation degree of depth measuring device of this application is when using, at first fix the magnetic base on the anvil block of metal rockwell hardness meter, then adjust the height of rockwell hardness meter anvil block, make the top and the contact of sclerometer pressure head of this equipment ejector pin 3, and the micrometer height of fine setting, make it return to zero.
After the pressure head of the metal Rockwell hardness tester moves, the indentation depth measuring device of the Rockwell hardness tester gives an indentation depth value, at the moment, the precise screw rod 9 is made to move up and down through the rotating dial wheel 7, the top end of the ejector rod 3 moves up and down through the lever movement of the displacement measuring rod 5, the corresponding dial indicator 9 measures a movement distance, and the indentation depth measuring device of the Rockwell hardness tester can be calibrated by using the movement distance to give the indentation depth value.
In some optional embodiments, a knob 2 is arranged on the magnetic base 1, the magnetic base 1 is controlled to be magnetized or demagnetized by the knob 2, and the magnetic base 1 is magnetically adsorbed on the anvil. The knob 2 switches the two magnetic rods in the closed magnetic field and the open magnetic field by changing the two magnetic rods in the magnetic base 1, so that the magnetic base 1 generates magnetic force when needed, and can be firmly attracted to an anvil block.
In some alternative embodiments, the top end of the top bar 3 is provided with a top cap 4. The top cap 4 typically has a larger surface area relative to the top end of the top stem 3 to accommodate the indenter that contacts the rockwell hardness scale.
In some optional embodiments, the dial indicator 8 is mounted on the upper bottom plate of the magnetic base 1 through screws. The measuring head of which is in contact with the displacement measuring rod 5. The dial indicator 8 is used to enlarge the distance of the up-and-down movement of the jack rod 3.
In some optional embodiments, the dial wheel 7 is located in a notch formed on the upper bottom plate of the magnetic base 1 and has a dial part protruding out of the notch, the precision screw 8 is arranged in a vertical through hole formed on the upper bottom plate of the magnetic base 1 and is in gear engagement with the dial wheel 7, and the precision screw 8 moves up and down by rotating the dial wheel 7.
In some alternative embodiments, the transmission ratio of the thumb wheel 7 to the precision screw 8 is 1.
In some alternative embodiments, the precision screw 8, the top post 6 and the top rod 3 form a lever mechanism for driving the displacement measuring rod 5, and the distance between the points of the precision screw 8, the top post 6 and the top rod 3 contacting the displacement measuring rod 5 is configured as follows: when the thumb wheel 7 rotates for one circle, the up-and-down movement of the mandril 3 is not more than 0.05mm.
In some alternative embodiments, the top rod 3 is slidably disposed in the through hole of the upper bottom plate of the magnetic base 1 through a linear bearing. In an alternative embodiment, as shown in fig. 1, a limiting ball is arranged in the through hole of the upper bottom plate of the magnetic base 1, the limiting ball is usually matched with a bulge on the side wall of the push rod 3 to limit the range of the up-and-down movement of the push rod 3 in the through hole, and in order to limit the movement of the push rod, the push rod can be further provided with a step surface which can contact the lower wall surface of the upper bottom plate of the magnetic base 1 when the push rod 3 moves upwards, so as to limit the push rod 3 to move upwards continuously.
In some optional embodiments, the upper bottom plate and the lower bottom plate of the magnetic base 1 are connected at the opening side by a support rod, the support rod passes through the displacement measuring rod 5, a spring is arranged between the displacement measuring rod 5 and the upper bottom plate of the magnetic base 1, the spring is sleeved on the support rod, and the ejector rod is ensured to be in a stable state by the spring.
The application provides an equipment structure for calibration of metal rockwell hardness tester indentation degree of depth measuring device simple, and the volume is less, portable.
Although the present application has been described in detail with respect to specific embodiments and general description, it will be apparent to those skilled in the art that some modifications or improvements may be made based on the present application. Accordingly, such modifications and improvements are intended to be within the scope of this invention as claimed.
Claims (8)
1. An apparatus for calibration of a metallic rockwell hardness tester indentation depth measurement device, comprising:
the device comprises a magnetic base (1) and a control system, wherein the magnetic base (1) is detachably fixed on an anvil block of a metal Rockwell hardness tester, the magnetic base (1) is provided with a lower bottom plate and an upper bottom plate, and a groove space with a lateral opening is formed between the upper bottom plate and the lower bottom plate;
the ejector rod (3) is arranged in a through hole of an upper bottom plate of the magnetic base (1) in a sliding mode, the top end of the ejector rod (3) is located above the upper base and used for contacting a pressure head of a metal Rockwell hardness tester, and the bottom end of the ejector rod (3) is located in the groove space;
displacement measurement pole (5), support on the upper plate of magnetic base (1) through fore-set (6), and be located in the groove space, the first end that is located fore-set (6) one side of displacement measurement pole (5) articulates in the bottom of ejector pin (3), and it has force applying device and measuring device to be located the crimping respectively of fore-set (6) opposite side top, force applying device includes thumb wheel (7) and by thumb wheel rotation control's precision screw rod (8), and the bottom crimping of the axial motion of precision screw rod (8) is in the top of displacement measurement pole (5), measuring device includes amesdial (9), and the measuring head crimping of amesdial (9) is in the top of displacement measurement pole (5).
2. The apparatus for calibrating an indentation depth measuring device of a metal rockwell hardness tester according to claim 1, wherein a knob (2) is provided on the magnetic base (1), the magnetic base (1) is controlled to be magnetized or demagnetized by the knob (2), and the magnetic base (1) is magnetically attached to the anvil.
3. The apparatus for the calibration of indentation depth measuring devices for metal rockwell hardometers according to claim 1, wherein the top end of the ejector pin (3) is provided with an ejector cap (4).
4. The apparatus for the calibration of indentation depth measuring devices for metal rockwell hardometers according to claim 1, wherein the dial indicator (8) is mounted on the upper base plate of the magnetic base (1) by means of screws.
5. The apparatus for calibrating the indentation depth measuring device of a metal rockwell hardness tester according to claim 1, wherein the thumb wheel (7) is located in a notch formed on the upper base plate of the magnetic base (1) and has a thumb portion protruding out of the notch, the precision screw (8) is disposed in a vertical through hole formed on the upper base plate of the magnetic base (1) and is in gear engagement with the thumb wheel (7), and the precision screw (8) is moved up and down by rotating the thumb wheel (7).
6. The apparatus for the calibration of metallic rockwell hardness tester indentation depth measuring devices according to claim 5, wherein the ratio of the drive wheel (7) to the precision screw (8) is 1.
7. The apparatus for calibration of indentation depth measurement devices for metal rockwell hardometers according to claim 6, wherein the precision screw (8), the top post (6) and the jack (3) form a lever mechanism that drives the displacement measuring rod (5), and the distance between the points where the precision screw (8), the top post (6) and the jack (3) contact the displacement measuring rod (5) is configured to: when the thumb wheel (7) rotates for one circle, the up-and-down movement of the ejector rod (3) is not more than 0.05mm.
8. The apparatus for calibration of an indentation depth measuring device of a metal rockwell hardness meter according to claim 1, wherein the carrier rod (3) is slidably disposed in a through hole of an upper base plate of the magnetic base (1) through a linear bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211216472.1A CN115586097A (en) | 2022-09-30 | 2022-09-30 | Equipment for calibrating indentation depth measuring device of metal Rockwell hardness tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211216472.1A CN115586097A (en) | 2022-09-30 | 2022-09-30 | Equipment for calibrating indentation depth measuring device of metal Rockwell hardness tester |
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| Publication Number | Publication Date |
|---|---|
| CN115586097A true CN115586097A (en) | 2023-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211216472.1A Pending CN115586097A (en) | 2022-09-30 | 2022-09-30 | Equipment for calibrating indentation depth measuring device of metal Rockwell hardness tester |
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| CN (1) | CN115586097A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116223266A (en) * | 2023-05-05 | 2023-06-06 | 四川善邦交大建设工程有限公司 | Hardness check out test set is used in steel construction production based on it is spacing |
-
2022
- 2022-09-30 CN CN202211216472.1A patent/CN115586097A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116223266A (en) * | 2023-05-05 | 2023-06-06 | 四川善邦交大建设工程有限公司 | Hardness check out test set is used in steel construction production based on it is spacing |
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