CN112964586A - Auxiliary device for measuring Rockwell hardness of metal inclined plane - Google Patents
Auxiliary device for measuring Rockwell hardness of metal inclined plane Download PDFInfo
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- CN112964586A CN112964586A CN202110295102.0A CN202110295102A CN112964586A CN 112964586 A CN112964586 A CN 112964586A CN 202110295102 A CN202110295102 A CN 202110295102A CN 112964586 A CN112964586 A CN 112964586A
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- positioning
- rockwell hardness
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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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- 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
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses an auxiliary device for measuring Rockwell hardness of a metal inclined plane, which is arranged on a lifting screw of a Rockwell hardness tester, and comprises: support frame, locating plate, locating piece and adjusting bracket. The support frame includes bottom and upper portion, and on the bottom was fixed in elevating screw, upper portion was fixed in on the bottom, and upper portion was the U type. One end of the positioning plate can be fixedly connected with the upper part of the supporting frame in a rotating way. The positioning block is movably fixed on the top of the positioning plate. And one end of the adjusting frame is movably fixedly connected with the other end of the positioning plate, and the other end of the adjusting frame is fixedly connected with one side of the upper part of the supporting frame. Wherein, the test piece is fixed in on the locating plate, and the locating piece is used for spacing to the test piece. Therefore, the auxiliary device for measuring the Rockwell hardness of the metal inclined plane has a simple and reasonable structure, can be used for testing the Rockwell hardness of the inclined plane of a test piece, and has an accurate test result.
Description
Technical Field
The invention relates to the technical field of Rockwell hardness testing, in particular to an auxiliary device for measuring the Rockwell hardness of a metal inclined plane.
Background
The Rockwell hardness test method of the metal material comprises the following steps: pressing a pressure head with specific size, shape and material into the surface of the test piece according to a specified test method by two stages of test force, and measuring the initial indentation after the initial test force is loaded. And then applying a main test force, measuring the final indentation depth when the initial test force is maintained after the main test force is removed, and calculating the Rockwell hardness according to a formula by using the difference value and the constant of the final indentation depth and the initial indentation depth. In normal test, the sample surface requires to be bright and clean flat, and the test piece should be placed at the rigid support, and pressure head axis and loading direction are perpendicular with the test piece surface, and the measuring point avoids the test piece to produce the displacement in the test on the common axis of measuring head and lift lead screw. The cylindrical test piece is properly supported and placed on a test piece table with a centering V-shaped groove or a double-cylinder test piece. In rockwell hardness testing of an inclined plane test piece, an erroneous test result is caused because the axis of the indenter and the loading direction are not perpendicular to the surface of the test piece.
At present, no Rockwell hardness auxiliary device capable of testing an inclined plane test piece exists, and an auxiliary device capable of testing the Rockwell hardness of the inclined plane of the test piece is urgently needed to be designed.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide an auxiliary device for measuring the Rockwell hardness of a metal inclined plane, which has a simple and reasonable structure, can be used for carrying out the Rockwell hardness test on the inclined plane of a test piece, and has an accurate test result.
In order to achieve the above object, the present invention provides an auxiliary device for measuring rockwell hardness of a metal slope, which is mounted on a lifting screw of a rockwell hardness tester, and comprises: support frame, locating plate, locating piece and adjusting bracket. The support frame includes bottom and upper portion, and on the bottom was fixed in elevating screw, upper portion was fixed in on the bottom, and upper portion was the U type. One end of the positioning plate can be fixedly connected with the upper part of the supporting frame in a rotating way. The positioning block is movably fixed on the top of the positioning plate. And one end of the adjusting frame is movably fixedly connected with the other end of the positioning plate, and the other end of the adjusting frame is fixedly connected with one side of the upper part of the supporting frame. Wherein, the test piece is fixed in on the locating plate, and the locating piece is used for spacing to the test piece.
In one embodiment of the present invention, the top of one side of the upper part of the support frame has graduation lines thereon.
In an embodiment of the present invention, first shaft holes are respectively formed at both sides of an upper portion of the support frame, second shaft holes are respectively formed at both sides of one end of the positioning plate, and the rotating shaft passes through the first shaft holes and the second shaft holes, so that the positioning plate is rotatably and fixedly connected to the upper portion of the support frame.
In one embodiment of the present invention, a fixing screw hole is formed on one side of the upper portion of the supporting frame, an adjusting screw hole is formed on a side surface of the other end of the positioning plate, an adjusting long hole is formed on one end of the adjusting frame, a fixing hole is formed on the other end of the adjusting frame, one end of the adjusting frame is screwed into the adjusting screw hole of the positioning plate through the adjusting long hole by an adjusting screw, and the other end of the adjusting frame is screwed into the fixing screw hole of the upper portion of the supporting frame through the fixing hole by a fixing screw.
In one embodiment of the present invention, a washer is provided between the adjustment long hole of the adjustment bracket and the adjustment screw hole of the positioning plate.
In an embodiment of the invention, the positioning block is a V-shaped positioning block, an opening of the positioning block faces the test piece, and the positioning block is provided with a plurality of positioning holes.
In an embodiment of the present invention, the positioning block has at least one positioning groove formed on a top thereof, and the positioning block is screwed into the at least one positioning groove by a positioning screw passing through the plurality of positioning holes.
In an embodiment of the present invention, at least one positioning groove has a positioning nut therein, and the positioning nut is correspondingly adapted to the positioning screw.
In an embodiment of the disclosure, the number of the positioning holes is four, the number of the at least one positioning groove is two, the two positioning grooves are both T-shaped positioning grooves, a key groove is further provided between the two positioning grooves, and the bottom of the positioning block is provided with a convex key movably disposed in the key groove.
In an embodiment of the present invention, the number of the positioning nuts is four, and all of the four positioning nuts are T-shaped positioning nuts.
Compared with the prior art, the auxiliary device for measuring the Rockwell hardness of the metal inclined plane has a simple and reasonable structure, can be used for carrying out the Rockwell hardness test on the inclined plane of a test piece, and has an accurate test result.
Drawings
FIG. 1 is a schematic perspective view of an auxiliary device for measuring Rockwell hardness of a metal slope according to an embodiment of the present invention;
fig. 2 is another schematic perspective view of the whole auxiliary device for measuring rockwell hardness of a metal slope according to an embodiment of the present invention.
Fig. 3 is a schematic overall side view of an auxiliary device for measuring rockwell hardness of a metal slope according to an embodiment of the present invention.
FIG. 4 is a schematic view of an exploded view of an auxiliary device for measuring Rockwell hardness of a metal slope according to an embodiment of the present invention;
FIG. 5 is an exploded view of a support bracket and a positioning plate of an auxiliary device for measuring Rockwell hardness of a metal slope according to an embodiment of the present invention;
FIG. 6 is a schematic view illustrating a combination of a supporting frame and a positioning plate of an auxiliary device for measuring Rockwell hardness of a metal slope according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an adjusting bracket, a supporting bracket and a positioning plate of an auxiliary device for measuring rockwell hardness of a metal slope according to an embodiment of the present invention before installation.
Fig. 8 is a schematic structural diagram of an adjustment bracket, a support bracket and a positioning plate of an auxiliary device for measuring rockwell hardness of a metal slope according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram illustrating a positioning block of an auxiliary device for measuring rockwell hardness of a metal slope according to an embodiment of the present invention before being mounted on a positioning plate.
Fig. 10 is a schematic structural view illustrating a positioning block of an auxiliary device for measuring rockwell hardness of a metal slope according to an embodiment of the present invention mounted on a positioning plate.
FIG. 11 is a schematic front view of a Rockwell hardness tester equipped with an auxiliary device for measuring Rockwell hardness of a metal slope according to an embodiment of the present invention.
FIG. 12 is a schematic side view of a Rockwell hardness tester equipped with an auxiliary device for measuring Rockwell hardness of a metal slope according to an embodiment of the present invention.
Fig. 13 is a front view schematically illustrating a structure of a test piece according to an embodiment of the present invention.
Fig. 14 is a perspective view of a test piece according to an embodiment of the present invention.
FIG. 15 is a schematic top view of a test piece mounted on a positioning plate according to an embodiment of the present invention.
FIG. 16 is a side view of a test piece mounted on a positioning plate according to an embodiment of the present invention.
Description of the main reference numerals:
1-positioning nut, 2-positioning block, 3-positioning screw, 4-positioning plate, 5-support frame, 6-washer, 7-adjusting frame, 8-adjusting screw, 9-fixing screw, 10-rotating shaft, 11-test piece and 12-lifting screw rod.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1 to 16, an auxiliary device for measuring rockwell hardness of a metal slope according to a preferred embodiment of the present invention is mounted on a lifting screw 12 of a rockwell hardness tester, and includes: support frame 5, locating plate 4, locating piece 2 and alignment jig 7. The support frame 5 comprises a bottom part and an upper part, the bottom part is fixed on the lifting screw rod 12, the upper part is fixed on the bottom part, and the upper part is U-shaped. One end of the positioning plate 4 is fixedly connected with the upper part of the supporting frame 5 in a rotatable way. The positioning block 2 is movably fixed on the top of the positioning plate 4. And one end of the adjusting frame 7 is movably fixedly connected with the other end of the positioning plate 4, and the other end of the adjusting frame 7 is fixedly connected with one side of the upper part of the supporting frame 5. Wherein, the testing piece 11 is fixed on the positioning plate 4, and the positioning block 2 is used for limiting the testing piece 11.
In one embodiment of the present invention, the top of one side of the upper portion of the support frame 5 has graduation marks.
In an embodiment of the present invention, first shaft holes are respectively formed at both sides of an upper portion of the supporting frame 5, second shaft holes are respectively formed at both sides of one end of the positioning plate 4, and the rotating shaft 10 passes through the first shaft holes and the second shaft holes, so that the positioning plate 4 is rotatably and fixedly connected to the upper portion of the supporting frame 5.
In one embodiment of the present invention, a fixing screw hole is formed on one side of the upper portion of the supporting frame 5, an adjusting screw hole is formed on the side surface of the other end of the positioning plate 4, an adjusting long hole is formed on one end of the adjusting frame 7, a fixing hole is formed on the other end of the adjusting frame 7, one end of the adjusting frame 7 is screwed into the adjusting screw hole of the positioning plate 4 through the adjusting long hole by an adjusting screw 8, and the other end of the adjusting frame 7 is screwed into the fixing screw hole of the upper portion of the supporting frame 5 through the fixing hole by a fixing screw 9.
In one embodiment of the present invention, a washer 6 is provided between the adjustment long hole of the adjustment bracket 7 and the adjustment screw hole of the positioning plate 4. The positioning block 2 is a V-shaped positioning block 2, the opening of the positioning block 2 faces the testing piece 11, and the positioning block 2 is provided with a plurality of positioning holes.
In an embodiment of the present invention, at least one positioning groove is formed on the top of the positioning block 2, and the positioning block 2 is screwed into the at least one positioning groove by a positioning screw 3 passing through the plurality of positioning holes. And a positioning nut 1 is arranged in at least one positioning groove, and the positioning nut 1 is correspondingly matched with the positioning screw 3.
In an embodiment of the present invention, the number of the plurality of positioning holes is four, the number of the at least one positioning groove is two, the two positioning grooves are both T-shaped positioning grooves, a key groove is further provided between the two positioning grooves, and the bottom of the positioning block 2 has a convex key movably disposed in the key groove. The number of the positioning nuts 1 is four, and the four positioning nuts 1 are T-shaped positioning nuts 1.
In one embodiment of the present invention, the supporting frame 5 is a supporting reference member of the device, and is shaped like a slingshot (i.e. the upper part is U-shaped), the bottom is cylindrical, and the size is the same as that of the V-shaped supporting platform of the original rockwell hardness tester; the middle part is provided with a hole 9 for fixing a screw of the adjusting bracket 7; a mounting hole of a rotating shaft 10 is processed at the middle upper part; the top of the rotating shaft is processed into an arc shape, one end of the rotating shaft is provided with an angle scale mark, 0 degree of the rotating shaft is a horizontal position, the other end of the rotating shaft is processed with a centering scale mark, and the centering scale mark, the center line of the rotating shaft 10 and the center line of the cylinder at the bottom are on the same plane.
In one embodiment of the invention, the positioning plate 4 is provided with two T-shaped positioning grooves, so that various positioning blocks 2 are convenient to install and replace; a key groove is processed between the two T-shaped positioning grooves; a rotating shaft 10 hole is processed at the bottom of the T-shaped positioning plate 4, and the axis of the rotating shaft 10 hole is on the bottom plane, so that the corresponding angle of the T-shaped positioning plate 4 on the support frame 5 is ensured to be 0 degree when the T-shaped positioning plate is in the horizontal position; the other end of the bottom is provided with a shaft hole.
In an embodiment of the present invention, the V-shaped positioning block 2 is provided with a V-shaped positioning slot for conveniently positioning the circular test piece 11. The bottom of the V-shaped positioning block 2 is provided with a convex key, and the convex key of the V-shaped positioning block 2 moves on the key groove of the T-shaped positioning plate 4 in an equal way during installation.
In one embodiment of the present invention, the adjusting screw 8 and the fixing screw 9 are loosened, the T-shaped positioning plate 4 can rotate around the rotating shaft 10, the upper surface of the T-shaped positioning plate 4 rotates to become an inclined plane, and the lower plane of the T-shaped positioning plate 4 is inclined at an angle corresponding to the angle scale of the support frame 5.
In one embodiment of the invention, the positioning screw 3 is loosened, the T-shaped positioning nut 1, the V-shaped positioning block 2 and the positioning screw 3 are moved, the pre-measuring point of the test piece 11 is adjusted on the extension line of the centering scale line of the support frame 5, and the positioning screw 3 is locked, so that the purpose of quickly adjusting the pre-measuring point of the test piece 11 to be on the axis of the pressure head is achieved.
In one embodiment of the present invention, the washer 6, the adjusting bracket 7, the adjusting screw 8, the fixing screw 9, the T-shaped positioning plate 4 and the supporting bracket 5 form a triangular mechanism when being installed, which has extremely high stability and can be adjusted and locked within a certain angle.
In practical application, the auxiliary device for measuring the Rockwell hardness of the metal inclined plane can accurately adjust the inclined plane of the point 11 of the metal test piece to be horizontal in the test process, and enables the pre-measuring point to be quickly aligned to the axis of the pressure head, so that the hardness of the metal inclined plane can be accurately measured. In detail, the auxiliary device for measuring the Rockwell hardness of the metal inclined plane comprises the following parts: t-shaped positioning nuts 1, V-shaped positioning blocks 2, positioning screws 3, T-shaped positioning plates 4, a supporting frame 5, a gasket 6, an adjusting frame 7, adjusting screws 8, fixing screws 9 and a rotating shaft 10. The installation method of the device comprises the following steps: the shaft holes of the T-shaped positioning plates 4 are aligned with the shaft holes of the support frame 5, the rotating shaft 10 penetrates through the shaft holes of the support frame 5 to connect the T-shaped positioning plates 4 together to form a new component A, and the T-shaped positioning plates 4 can flexibly rotate around the rotating shaft 10 on the support frame 5 after being installed (as shown in figures 5 and 6). After the washer 6, the adjusting bracket 7, the adjusting screw 8 and the fixing screw 9 are mounted on the component a, a component B is formed (as shown in fig. 7 and 8). The whole auxiliary device is mounted by mounting the T-shaped positioning nut 1, the V-shaped positioning block 2 and the positioning screw 3 on the component B (as shown in fig. 9 and 10).
The use method of the device in the Rockwell hardness tester is as follows: the V-shaped support platform with the lifting screw rod of the original Rockwell hardness tester removed is removed, and the device is installed (as shown in figures 11 and 12). The angle a of the slope of the test piece 11 with the bottom surface was measured (as shown in fig. 13 and 14). The adjusting screws 8 and the fixing screws 9 are loosened, the supporting angle of the bottom surface of the T-shaped positioning plate 4 on the supporting frame 5 is adjusted to be a, and then the adjusting screws 8 and the fixing screws 9 are locked and loosened (as shown in fig. 2 and 3). The test piece 11 is placed on the surface of the T-shaped positioning plate 4, the positioning screw 3 is loosened, the T-shaped positioning nut 1, the V-shaped positioning block 2 and the positioning screw 3 are moved, the pre-measuring point of the test piece 11 is adjusted to be on the extension line of the centering scale line of the support frame 5, and the positioning screw 3 is locked (as shown in fig. 15). At this time, the inclined surface of the test piece 11 was adjusted to be horizontal on the rockwell hardness tester, that is, the test surface of the test piece 11 was perpendicular to the indenter axis and the test force, and the measurement point was on the indenter axis, so that the test was performed at normal rockwell hardness (as shown in fig. 16).
In a word, the auxiliary device for measuring the Rockwell hardness of the metal inclined plane has a simple and reasonable structure, can accurately adjust the inclined plane of the 11 point of the metal test piece to be horizontal in the test process, and enables the pre-measuring point to be quickly aligned to the axis of the pressure head, thereby accurately measuring the hardness of the metal inclined plane.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. The utility model provides an auxiliary device of measurement metal inclined plane rockwell hardness, installs on the lift lead screw of rockwell hardness meter, characterized in that, auxiliary device of measurement metal inclined plane rockwell hardness includes:
the support frame comprises a bottom and an upper part, the bottom is fixed on the lifting screw rod, the upper part is fixed on the bottom, and the upper part is U-shaped;
one end of the positioning plate can be fixedly connected with the upper part of the supporting frame in a rotating manner;
the positioning block is movably fixed on the top of the positioning plate; and
one end of the adjusting frame is movably and fixedly connected with the other end of the positioning plate, and the other end of the adjusting frame is fixedly connected with one side of the upper part of the supporting frame;
the testing piece is fixed on the positioning plate, and the positioning block is used for limiting the testing piece.
2. The assistant apparatus for measuring rockwell hardness on metal slopes according to claim 1, wherein said one side of said upper portion of said support frame has graduation marks on the top thereof.
3. The auxiliary device for measuring the rockwell hardness of a metal slope according to claim 1, wherein first shaft holes are respectively formed at two sides of the upper portion of the supporting frame, second shaft holes are respectively formed at two sides of the one end of the positioning plate, and a rotating shaft passes through the first shaft holes and the second shaft holes, so that the positioning plate can be rotatably and fixedly connected with the upper portion of the supporting frame.
4. The auxiliary device for measuring the rockwell hardness of a metal slope according to claim 1, wherein said one side of said upper portion of said supporting frame is provided with a fixing screw hole, a side surface of said other end of said positioning plate is provided with an adjusting screw hole, one end of said adjusting frame is provided with an adjusting long hole, the other end of said adjusting frame is provided with a fixing hole, and one end of said adjusting frame is screwed into said adjusting screw hole of said positioning plate by passing through said adjusting long hole through an adjusting screw, and the other end of said adjusting frame is screwed into said fixing screw hole of said upper portion of said supporting frame by passing through said fixing hole through a fixing screw.
5. The auxiliary device for measuring the Rockwell hardness of a metal slope according to claim 4, wherein a washer is disposed between the adjustment long hole of the adjustment bracket and the adjustment screw hole of the positioning plate.
6. The auxiliary device for measuring the rockwell hardness of a metal slope according to claim 1, wherein the positioning block is a V-shaped positioning block, an opening of the positioning block faces the test piece, and the positioning block is provided with a plurality of positioning holes.
7. The auxiliary device for measuring the Rockwell hardness of a metal slope according to claim 6, wherein at least one positioning groove is formed on the top of the positioning block, and the positioning block is screwed into the at least one positioning groove by a positioning screw passing through the plurality of positioning holes.
8. The device as claimed in claim 7, wherein the at least one positioning groove has a positioning nut therein, and the positioning nut is correspondingly adapted to the positioning screw.
9. The auxiliary device for measuring the rockwell hardness of a metal slope according to claim 8, wherein the number of the positioning holes is four, the number of the at least one positioning groove is two, both positioning grooves are T-shaped positioning grooves, a key groove is further formed between the two positioning grooves, and a key is provided at the bottom of the positioning block and movably disposed in the key groove.
10. The assistant device for measuring the Rockwell hardness of a metal slope according to claim 7, wherein the number of the positioning nuts is four, and the four positioning nuts are T-shaped nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110295102.0A CN112964586A (en) | 2021-03-19 | 2021-03-19 | Auxiliary device for measuring Rockwell hardness of metal inclined plane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110295102.0A CN112964586A (en) | 2021-03-19 | 2021-03-19 | Auxiliary device for measuring Rockwell hardness of metal inclined plane |
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| CN112964586A true CN112964586A (en) | 2021-06-15 |
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| CN202110295102.0A Pending CN112964586A (en) | 2021-03-19 | 2021-03-19 | Auxiliary device for measuring Rockwell hardness of metal inclined plane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552011A (en) * | 2021-08-24 | 2021-10-26 | 北京北方车辆集团有限公司 | Online rockwell hardness detection device for hardened layer of end coupling device |
-
2021
- 2021-03-19 CN CN202110295102.0A patent/CN112964586A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552011A (en) * | 2021-08-24 | 2021-10-26 | 北京北方车辆集团有限公司 | Online rockwell hardness detection device for hardened layer of end coupling device |
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