CN111157331A - Indentation measuring device for detection of Brinell hardness tester - Google Patents
Indentation measuring device for detection of Brinell hardness tester Download PDFInfo
- Publication number
- CN111157331A CN111157331A CN202010129276.5A CN202010129276A CN111157331A CN 111157331 A CN111157331 A CN 111157331A CN 202010129276 A CN202010129276 A CN 202010129276A CN 111157331 A CN111157331 A CN 111157331A
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- transmission assembly
- block
- rotating rod
- fixedly connected
- bevel gear
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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
-
- 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
- G01N3/40—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
Abstract
The invention provides an indentation measuring device for Brinell hardness tester detection, and relates to the technical field of indentation measurement. This brinell hardness tester detects and uses indentation measuring device, including the installation base, the last fixed surface of installation base installs the fixed block, the top fixedly connected with of fixed block cup joints the pole, the surface that cup joints the pole has cup jointed the piece, one side fixed mounting of cup jointing the piece has the reading microscope, the opposite side threaded connection of cup jointing the piece has the locking bolt, the inside wall of installation base rotates through the bearing and is connected with first rotation pole. According to the invention, through the matching of the first transmission assembly, the second transmission assembly, the third transmission assembly and other structures, the standard hardness block after clamping is always positioned under the reading microscope, so that the deviation condition is avoided, the indentation measurement accuracy is improved, meanwhile, the four clamping blocks can be suitable for standard hardness blocks with different diameters, the universality of the whole device is improved, and the practicability is strong.
Description
Technical Field
The invention relates to the technical field of indentation measurement, in particular to an indentation measuring device for Brinell hardness tester detection.
Background
The Brinell hardness tester is mainly used for measuring the hardness of cast iron, steel, nonferrous metal, soft alloy and the like. The method is mainly characterized in that a hard metal ball with a certain diameter is pressed into the surface of a test piece under the action of a specified test force, the test force is removed after a certain test force retention time, then the diameter of an indentation left on the surface of the test piece is measured, and the Brinell hardness value is represented by the average pressure born by the surface area of the indentation. When the Brinell hardness tester is used for testing, a tested hardness tester is used for applying a specified test force on a standard hardness block to measure the indentation diameter of the surface of the standard hardness block, then the Brinell hardness value actually corresponding to the diameter is obtained by checking a corresponding table of the indentation diameter and the hardness value, and then the Brinell hardness value is compared with the hardness value of the standard hardness block for calculation, so that the hardness value error of the hardness tester is obtained.
When the indentation diameter is measured, the relative position of the reading microscope and the indentation must be fixed and unchanged, the standard hardness block is directly placed below the reading microscope by the ordinary reading microscope, then the reading microscope is assisted to be fixed and adjusted by manpower, and in the fixing and adjusting processes, the relative position of the reading microscope and the indentation can be changed due to small influence of manual change, so that the measuring accuracy of the indentation diameter is greatly influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects in the prior art, the invention provides an indentation measuring device for Brinell hardness tester detection, which solves the defects in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: an indentation measuring device for detecting a Brinell hardness tester comprises an installation base, wherein a fixed block is fixedly installed on the upper surface of the installation base, a sleeve joint rod is fixedly connected to the top of the fixed block, a sleeve joint block is sleeved on the outer surface of the sleeve joint rod, a reading microscope is fixedly installed on one side of the sleeve joint block, a locking bolt is connected to the other side of the sleeve joint block in a threaded manner, a first rotating rod is rotatably connected to the inner side wall of the installation base through a bearing, a worm is fixedly connected to the end portion of the first rotating rod, a second rotating rod is fixedly connected to one end, away from the first rotating rod, of the worm, one end, away from the worm, of the second rotating rod extends to the outer portion of the installation base and is fixedly connected with the first rotating block, a fixed column is rotatably connected to the inner bottom, the worm wheel meshes with the worm, the top of fixed column extends to the outside and the fixedly connected with regulating plate of installation base, the lateral wall of regulating plate is provided with first transmission assembly, the interior bottom of regulating plate is provided with second transmission assembly, the lateral wall of regulating plate is provided with third transmission assembly, first transmission assembly is connected with the transmission of second transmission assembly, second transmission assembly is connected with the transmission of third transmission assembly, third transmission assembly is connected with the grip block, the grip block is located the upper surface of regulating plate.
Preferably, the number of the third transmission assemblies is four, the four third transmission assemblies are respectively and fixedly mounted at four corners inside the adjusting plate, and the upper surface of the adjusting plate is provided with an adapting hole corresponding to the third transmission assemblies.
Preferably, the number of the clamping blocks is four, the four clamping blocks are arranged in a rectangular array, and the opposite sides of the four clamping blocks are all set to be arc-shaped.
Preferably, the first transmission assembly comprises a first rotating rod, the first rotating rod is rotatably connected with the side wall of the adjusting plate, one end of the first rotating rod is fixedly connected with a second rotating block, and the other end of the first rotating rod extends to the inside of the adjusting plate and is fixedly connected with a first bevel gear.
Preferably, the second transmission assembly includes the second rotary rod, the second rotary rod passes through the bearing and is connected with the interior bottom rotation of regulating plate, the fixed surface of second rotary rod installs second bevel gear and third bevel gear, second bevel gear is located the top of third bevel gear.
Preferably, the third transmission assembly comprises a connecting plate, the side wall of the connecting plate is rotatably connected with a threaded rod through a bearing, the outer surface of the threaded rod is in threaded connection with a threaded block, the upper surface of the threaded block is fixedly connected with a connecting rod, and one end, far away from the connecting plate, of the threaded rod is fixedly connected with a fourth bevel gear.
The working principle is as follows: when the measuring device is used, the standard hardness block is placed on the upper surface of the adjusting plate and is positioned in the middle of the four clamping blocks, then the second rotating block is screwed, the second rotating block drives the first bevel gear to rotate through the first rotating rod, the first bevel gear drives the second rotating rod and the second bevel gear to rotate through the third bevel gear, the second bevel gear drives the threaded rod to rotate through the fourth bevel gear, the threaded block drives the clamping blocks to move through the connecting rod, the four clamping blocks synchronously move to clamp the standard hardness block, then the indentation of the standard hardness block is measured by using a reading microscope, after the measurement, the first rotating block is screwed, the first rotating block drives the worm to rotate, the worm gear drives the fixed column to rotate, the adjusting plate drives the standard hardness block to rotate, and after the standard hardness block rotates for a certain angle, the indentation is measured by using the reading microscope continuously.
(III) advantageous effects
The invention provides an indentation measuring device for detection of a Brinell hardness tester. The method has the following beneficial effects:
1. according to the invention, through the matching of the first transmission assembly, the second transmission assembly, the third transmission assembly and other structures, the standard hardness block after clamping is always positioned under the reading microscope, so that the deviation condition is avoided, the indentation measurement accuracy is improved, meanwhile, the four clamping blocks can be suitable for standard hardness blocks with different diameters, the universality of the whole device is improved, and the practicability is very strong.
2. According to the invention, the adjusting plate and the standard hardness block above the adjusting plate can be driven to rotate by screwing the first rotating block, and the indentation can be measured by continuously utilizing the reading microscope after the adjusting plate and the standard hardness block rotate for a certain angle, so that the measuring accuracy is further improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of the internal structure of the mounting base of the present invention;
FIG. 3 is a top view of the adjusting plate structure of the present invention;
FIG. 4 is a top view of the inner structure of the regulating plate according to the present invention;
FIG. 5 is a schematic view of the transmission connection between the first transmission assembly and the second transmission assembly according to the present invention;
FIG. 6 is a schematic view of a third transmission assembly according to the present invention.
Wherein, 1, installing a base; 2. a fixed block; 3. a sleeved rod; 4. sleeving and connecting blocks; 5. locking the bolt; 6. a reading microscope; 7. a first rotating lever; 8. a worm; 9. a second rotating lever; 10. a first rotating block; 11. fixing a column; 12. a worm gear; 13. an adjusting plate; 14. a first transmission assembly; 15. a second transmission assembly; 16. a third transmission assembly; 17. a clamping block; 18. an adapter hole; 141. a first rotating rod; 142. a first bevel gear; 143. a second rotating block; 151. a second rotating rod; 152. a second bevel gear; 153. a third bevel gear; 161. a connecting plate; 162. a threaded rod; 163. a thread block; 164. a connecting rod; 165. and a fourth bevel gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1-6, an embodiment of the present invention provides an indentation measuring device for brinell hardness tester detection, including an installation base 1, a fixed block 2 is fixedly installed on an upper surface of the installation base 1, a sleeve rod 3 is fixedly connected to a top portion of the fixed block 2, a sleeve block 4 is sleeved on an outer surface of the sleeve rod 3, a reading microscope 6 is fixedly installed on one side of the sleeve block 4, a locking bolt 5 is connected to the other side of the sleeve block 4 through a thread, a first rotating rod 7 is rotatably connected to an inner side wall of the installation base 1 through a bearing, a worm 8 is fixedly connected to an end portion of the first rotating rod 7, a second rotating rod 9 is fixedly connected to an end portion of the worm 8 far away from the first rotating rod 7, an end portion of the second rotating rod 9 far away from the worm 8 extends to an outer portion of the installation base 1 and is fixedly connected to a, the outer surface of the fixed column 11 is fixedly connected with a worm wheel 12, the worm wheel 12 is meshed with the worm 8, the top of the fixed column 11 extends to the outside of the mounting base 1 and is fixedly connected with an adjusting plate 13, the adjusting plate 13 is positioned under the reading microscope 6, a first transmission assembly 14 is arranged on the side wall of the adjusting plate 13, a second transmission assembly 15 is arranged at the inner bottom of the adjusting plate 13, a third transmission assembly 16 is arranged on the side wall of the adjusting plate 13, the first transmission assembly 14 is in transmission connection with the second transmission assembly 15, the second transmission assembly 15 is in transmission connection with the third transmission assembly 16, the third transmission assembly 16 is connected with a clamping block 17, and the clamping block 17 is positioned on the upper surface of the adjusting plate 13.
The number of the third transmission assemblies 16 is four, the four third transmission assemblies 16 are respectively and fixedly mounted at four corners inside the adjusting plate 13, the upper surface of the adjusting plate 13 is provided with an adapting hole 18 corresponding to the third transmission assemblies 16, and the adapting hole 18 is mainly used for the connecting rod 164 in the third transmission assemblies 16 to slide inside, so that the thread block 163 on the outer surface of the threaded rod 162 can move linearly.
The quantity of grip block 17 is four, and four grip blocks 17 are the rectangle array and arrange, and the relative one side of four grip blocks 17 all sets up to the arc, and the outward appearance phase-match of curved shape and standard hardness piece.
The first transmission assembly 14 includes a first rotating rod 141, the first rotating rod 141 is rotatably connected to a sidewall of the adjusting plate 13, one end of the first rotating rod 141 is fixedly connected to a second rotating block 143, and the other end of the first rotating rod 141 extends to the inside of the adjusting plate 13 and is fixedly connected to a first bevel gear 142.
The second transmission assembly 15 includes a second rotating rod 151, the second rotating rod 151 is rotatably connected to the inner bottom of the adjusting plate 13 through a bearing, a second bevel gear 152 and a third bevel gear 153 are fixedly mounted on the outer surface of the second rotating rod 151, the second bevel gear 152 is located above the third bevel gear 153, wherein the first bevel gear 142 is engaged with the third bevel gear 153, and the second bevel gear 152 is engaged with four fourth bevel gears 165.
The third transmission assembly 16 includes a connecting plate 161, a side wall of the connecting plate 161 is rotatably connected with a threaded rod 162 through a bearing, an outer surface of the threaded rod 162 is in threaded connection with a threaded block 163, an upper surface of the threaded block 163 is fixedly connected with a connecting rod 164, and one end of the threaded rod 162 far away from the connecting plate 161 is fixedly connected with a fourth bevel gear 165.
In the present invention, a standard hardness block is placed on the upper surface of an adjusting plate 13, the standard hardness block is positioned in the middle of four clamping blocks 17, then a second rotating block 143 is screwed, the second rotating block 143 rotates with a first bevel gear 142 by a first rotating rod 141, the first bevel gear 142 rotates with a second rotating rod 151 and a second bevel gear 152 by a third bevel gear 153, the second bevel gear 152 rotates with a threaded rod 162 by a fourth bevel gear 165, a threaded block 163 moves with the clamping blocks 17 by a connecting rod 164, the four clamping blocks 17 synchronously move to clamp the standard hardness block, then the indentation thereof is measured by a reading microscope 6, after the measurement, the first rotating block 10 is screwed, the first rotating block 10 rotates with a worm 8, a worm wheel 12 rotates with a fixed column 11, thereby the adjusting plate 13 rotates with the standard hardness block, after a certain angle is rotated, continue to utilize reading microscope 6 to measure the indentation, cooperation between first drive assembly 14, second drive assembly 15 and third drive assembly 16 and so on structure through setting up for standard hardness piece after the centre gripping is in reading microscope 6 all the time under, the condition of skew can not appear, improved indentation measuring precision, four grip blocks 17 can be applicable to the standard hardness piece of different diameters simultaneously, the commonality of whole device has been improved, the practicality is very strong.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a brinell hardness tester detects uses indentation measuring device, includes installation base (1), its characterized in that: the mounting base is characterized in that a fixed block (2) is fixedly arranged on the upper surface of the mounting base (1), a sleeve connecting rod (3) is fixedly connected to the top of the fixed block (2), a sleeve connecting block (4) is sleeved on the outer surface of the sleeve connecting rod (3), a reading microscope (6) is fixedly arranged on one side of the sleeve connecting block (4), a locking bolt (5) is connected to the other side of the sleeve connecting block (4) in a threaded manner, a first rotating rod (7) is rotatably connected to the inner side wall of the mounting base (1) through a bearing, a worm (8) is fixedly connected to the end portion of the first rotating rod (7), a second rotating rod (9) is fixedly connected to one end, far away from the worm (8), of the second rotating rod (9) extends to the outer portion of the mounting base (1) and is fixedly connected with a first rotating block (10), a fixed column (11) is rotatably connected to the inner bottom of the mounting base (1), the outer fixed surface of fixed column (11) is connected with worm wheel (12), worm wheel (12) and worm (8) meshing, the top of fixed column (11) extends to outside and fixedly connected with regulating plate (13) of installation base (1), the lateral wall of regulating plate (13) is provided with first transmission assembly (14), the interior bottom of regulating plate (13) is provided with second transmission assembly (15), the lateral wall of regulating plate (13) is provided with third transmission assembly (16), first transmission assembly (14) is connected with second transmission assembly (15) transmission, second transmission assembly (15) is connected with third transmission assembly (16) transmission, third transmission assembly (16) are connected with grip block (17), grip block (17) are located the upper surface of regulating plate (13).
2. The indentation measurement device for brinell hardness tester inspection according to claim 1, wherein: the quantity of third transmission assembly (16) is four, four third transmission assembly (16) fixed mounting is in the inside four corners of regulating plate (13) respectively, adaptation hole (18) corresponding with third transmission assembly (16) are seted up to the upper surface of regulating plate (13).
3. The indentation measurement device for brinell hardness tester inspection according to claim 1, wherein: the number of the clamping blocks (17) is four, the clamping blocks (17) are arranged in a rectangular array, and one sides, opposite to the four clamping blocks (17), of the clamping blocks are arc-shaped.
4. The indentation measurement device for brinell hardness tester inspection according to claim 1, wherein: the first transmission assembly (14) comprises a first rotating rod (141), the first rotating rod (141) is rotatably connected with the side wall of the adjusting plate (13), one end of the first rotating rod (141) is fixedly connected with a second rotating block (143), and the other end of the first rotating rod (141) extends to the inside of the adjusting plate (13) and is fixedly connected with a first bevel gear (142).
5. The indentation measurement device for brinell hardness tester inspection according to claim 1, wherein: the second transmission assembly (15) comprises a second rotating rod (151), the second rotating rod (151) is rotatably connected with the inner bottom of the adjusting plate (13) through a bearing, a second bevel gear (152) and a third bevel gear (153) are fixedly mounted on the outer surface of the second rotating rod (151), and the second bevel gear (152) is located above the third bevel gear (153).
6. The indentation measurement device for brinell hardness tester inspection according to claim 1, wherein: the third transmission assembly (16) comprises a connecting plate (161), the side wall of the connecting plate (161) is connected with a threaded rod (162) in a rotating mode through a bearing, the outer surface of the threaded rod (162) is connected with a threaded block (163) in a threaded mode, the upper surface of the threaded block (163) is fixedly connected with a connecting rod (164), and one end, far away from the connecting plate (161), of the threaded rod (162) is fixedly connected with a fourth bevel gear (165).
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CN202010129276.5A CN111157331A (en) | 2020-02-28 | 2020-02-28 | Indentation measuring device for detection of Brinell hardness tester |
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CN202010129276.5A CN111157331A (en) | 2020-02-28 | 2020-02-28 | Indentation measuring device for detection of Brinell hardness tester |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111751235A (en) * | 2020-06-30 | 2020-10-09 | 中国航发动力股份有限公司 | Workbench for fixed-degree hardness block and fixed-degree method thereof |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN204689538U (en) * | 2015-05-27 | 2015-10-07 | 莱州华银试验仪器有限公司 | Hardness meter workbench lifting device |
US20150285722A1 (en) * | 2014-04-07 | 2015-10-08 | Shaoming Wu | Modular hardness testing machine |
CN105510164A (en) * | 2016-02-17 | 2016-04-20 | 徐州工程学院 | Portable microscopic structure observation and Vickers hardness test all-in-one machine |
CN205808830U (en) * | 2016-07-08 | 2016-12-14 | 华能国际电力股份有限公司 | A kind of portable Brinell hardness reading microscope with magnetic annulus base |
CN109551393A (en) * | 2017-09-27 | 2019-04-02 | 天津天星电子有限公司 | A kind of LED product test fixture |
CN209640127U (en) * | 2018-12-28 | 2019-11-15 | 临安宇杰精密制品有限公司 | A kind of Vickers hardness measuring instrument with intelligent alarm |
CN209673581U (en) * | 2019-03-14 | 2019-11-22 | 河北军通电子装备科技有限公司 | A kind of self-propelled gun chassis rigidity detection device |
CN110542613A (en) * | 2019-10-08 | 2019-12-06 | 太原理工大学 | Self-balancing adjustable mechanical loading test device |
CN210108878U (en) * | 2019-05-27 | 2020-02-21 | 无锡维纳特机电科技有限公司 | A sclerometer for aluminium casting detects |
-
2020
- 2020-02-28 CN CN202010129276.5A patent/CN111157331A/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150285722A1 (en) * | 2014-04-07 | 2015-10-08 | Shaoming Wu | Modular hardness testing machine |
CN204689538U (en) * | 2015-05-27 | 2015-10-07 | 莱州华银试验仪器有限公司 | Hardness meter workbench lifting device |
CN105510164A (en) * | 2016-02-17 | 2016-04-20 | 徐州工程学院 | Portable microscopic structure observation and Vickers hardness test all-in-one machine |
CN205808830U (en) * | 2016-07-08 | 2016-12-14 | 华能国际电力股份有限公司 | A kind of portable Brinell hardness reading microscope with magnetic annulus base |
CN109551393A (en) * | 2017-09-27 | 2019-04-02 | 天津天星电子有限公司 | A kind of LED product test fixture |
CN209640127U (en) * | 2018-12-28 | 2019-11-15 | 临安宇杰精密制品有限公司 | A kind of Vickers hardness measuring instrument with intelligent alarm |
CN209673581U (en) * | 2019-03-14 | 2019-11-22 | 河北军通电子装备科技有限公司 | A kind of self-propelled gun chassis rigidity detection device |
CN210108878U (en) * | 2019-05-27 | 2020-02-21 | 无锡维纳特机电科技有限公司 | A sclerometer for aluminium casting detects |
CN110542613A (en) * | 2019-10-08 | 2019-12-06 | 太原理工大学 | Self-balancing adjustable mechanical loading test device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111751235A (en) * | 2020-06-30 | 2020-10-09 | 中国航发动力股份有限公司 | Workbench for fixed-degree hardness block and fixed-degree method thereof |
CN111751235B (en) * | 2020-06-30 | 2023-02-07 | 中国航发动力股份有限公司 | Workbench for fixing hardness block and fixing method thereof |
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