CN102213663B - Calibration instrument for depth sounding device of metal Rockwell hardness tester - Google Patents
Calibration instrument for depth sounding device of metal Rockwell hardness tester Download PDFInfo
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- CN102213663B CN102213663B CN2011100896078A CN201110089607A CN102213663B CN 102213663 B CN102213663 B CN 102213663B CN 2011100896078 A CN2011100896078 A CN 2011100896078A CN 201110089607 A CN201110089607 A CN 201110089607A CN 102213663 B CN102213663 B CN 102213663B
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- rockwell hardness
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Abstract
The invention belongs to the field of instruments and meters used in the measuring technology, and relates to a calibration instrument for a depth sounding device of a metal Rockwell hardness tester, which is mainly used for inspecting the indication error of an indentation depth measuring device of a metal Rockwell hardness tester, and comprises a central shaft 1, an adjustment screw 2, a fixed nut 3, a spring 4, a shaft sleeve 5, a shaft base 6, a figure dial indicator 7, a lever 8, a hollow column 9, a tension spring 10, a hand button 11, a base 12 and the like. In the calibration instrument, the structural principle and the actual operating steps of tests which are similar to those of the indentation depth measuring device of the hardness tester are adopted, the indicating values are measured by using the figure dial indicator, the measuring accuracy is 0.0002 millimeter, and the technical requirement specified by the national standard GB/T 230.2-2002 and JJG 112-2003 is met. The calibration instrument is compact in a structure, visual in the indicating values and convenient to operate, and can inspect the Rockwell hardness tester and a superficial Rockwell hardness tester; and the figure dial indicator 7 can be amplified by 10 times and is provided with an output interface, and can be connected with a computer to perform data processing and print results.
Description
Technical scope
The invention belongs to the measuring technique instrument field, is a kind of calibration instrument for depth sounding device of metal Rockwell hardness tester, is mainly used in checking the error of indication of the depth of cup measurement mechanism of metal Rockwell hardometer and metal surface Rockwell hardometer.
Background technology
By standard GB/T/T230.2-2002 " metallic rockwell hardness test part 2: sclerometer (A, B, C, D, E, F, G, H, K, N, the T scale) check and calibration " and JJG112-2003 " metal Rockwell hardometer " vertification regulation, the check of metal Rockwell hardometer depth of cup measurement mechanism has two kinds of methods: Direct Test method and indirect method of inspection, the Direct Test method adopts the sounding gear calibrating instrument, it should have the 0.0002mm accuracy, for should be accurate to ± 0.001mm of A-K scale, for N and T scale, should be accurate to ± 0.0005mm, be 0.5 ruler units.Also do not have at present this sounding gear calibrating instrument available, therefore can't carry out Direct Test, have to adopt the indirect method of inspection of replacement, method of inspection is indirectly: by testing with standard block of hardness and standard pressure head each scale that according to hardness test method GB/T230.1 will be used it, its error of indication should be not more than 0.8HR, the indirect method of inspection of this replacement more time-consuming and the trouble, consume a large amount of standards block of hardness, and what obtain is not the concrete numerical value of error, it is whether qualified ultimate value.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of technical requirement, accuracy that meets standard GB/T230.2-2002 and JJG112-2003 to reach 0.0002mm, can supply metal Rockwell hardometer (A, B, C, D, E, F, G, H, K, N, T scale) depth of cup measurement mechanism to carry out the calibration instrument for depth sounding device of metal Rockwell hardness tester of Direct Test.
The objective of the invention is to be realized by following technical scheme: a kind of calibration instrument for depth sounding device of metal Rockwell hardness tester, it comprises central shaft 1, adjust screw 2, hold-doun nut 3, spring 4, axle sleeve 5, axle bed 6, digital dial gauge 7, lever 8, hollow cylinder 9, extension spring 10, hand button 11, base 12 form, and its annexation is: described central shaft 1 cover upper spring 4 overlaps in the center pit that Upper shaft sleeve 5 is fixed on axle bed 6 again; Described axle bed 6 is arranged on the upper end of hollow cylinder 9, and tightens up with screw;
Described adjustment screw 2 is by the top of central shaft 1, is screwed into the appropriate location in the inner bolt hole of axle bed 6, and with hold-doun nut 3 pinnings.
Contact A close contact on the lower transverse plane of described central shaft 1 and lever 8 galianconism, the contact B on lever 8 is long-armed is the survey face close contact with digital dial gauge 7 by extension spring 10, and lever ratio is 5: 1.
Described digital dial gauge 7 is arranged on the lower left quarter of hollow cylinder 9, and hand button 11 is arranged on the right lower quadrant of hollow cylinder 9. and base 12 is arranged on the lower end of hollow cylinder 9.
Practical operation step while due to the present invention, adopting the similar structural principle of metal Rockwell hardometer depth of cup measurement mechanism and test, the main shaft of depth of cup measurement mechanism and central shaft of the present invention 1 close contact, the first test force of according to hardness counting, Compress Spring 4 applies onesize pressure to central shaft 1, the displacement of central shaft 1, after lever 8 amplifies 5 times, promote digital dial gauge 7, digital dial gauge 7 can amplify 10 times, make the indicating value accuracy reach 0.0002mm, the present invention meets the technical requirement of standard GB/T/T230.2-2002 and JJG112-2003 regulation, its beneficial effect is embodied in:
1, compact conformation, indicating value is directly perceived, easy to operate.
2, accuracy is high, and indicating value is stable
3, both can check metal Rockwell hardometer: A, B, C, D, E, F, G, H, K scale, can check again metal surface Rockwell hardometer N, the T scale, realize all standing.
The accompanying drawing explanation
Accompanying drawing is calibration instrument for depth sounding device of metal Rockwell hardness tester structural representation of the present invention.
In figure: 1, central shaft, 2, adjust screw, 3, hold-doun nut, 4, spring, 5, axle sleeve, 6, axle bed, 7, digital dial gauge, 8, lever, 9, hollow cylinder, 10, extension spring, 11, hand button, 12, base.
Specific embodiments
Below in conjunction with drawings and Examples, the present invention is further described.
With reference to the accompanying drawing calibration instrument for depth sounding device of metal Rockwell hardness tester, it comprises that central shaft 1, adjustment screw 2, hold-doun nut 3, spring 4, axle sleeve 5, axle bed 6, digital dial gauge 7, lever 8, hollow cylinder 9, extension spring 10, hand button 11, base 12 form.Its annexation is:
Described central shaft 1 cover upper spring 4 overlaps in the center pit that Upper shaft sleeve 5 is fixed on axle bed 6 again;
Described axle bed 6 is arranged on the upper end of hollow cylinder 9 and tightens up with screw;
Described adjustment screw 2 is by the top of central shaft 1, is screwed into the appropriate location in the inner bolt hole of axle bed 6, and with hold-doun nut 3 pinnings;
Contact A close contact on the lower transverse plane of described central shaft 1 and lever 8 galianconism, the contact B on lever 8 is long-armed is the survey face close contact with digital dial gauge 7 by extension spring 10, and lever ratio is 5: 1;
Described digital dial gauge 7 is arranged on the lower left quarter of hollow cylinder 9, and hand button 11 is arranged on the right lower quadrant of hollow cylinder 9. and base 12 is arranged on the lower end of hollow cylinder 9.
At first the present invention is achieved in that and assembles in the manner described above complete by the present invention, practical operation step while adopting the similar structural principle of sclerometer depth of cup measurement mechanism and test, the main shaft of sclerometer depth of cup measurement mechanism and central shaft of the present invention 1 close contact, the first test force of according to hardness counting, Compress Spring 4 applies onesize pressure to central shaft 1, the displacement of sclerometer depth of cup measurement mechanism main shaft, pass to the contact A on lever 8 galianconism by central shaft 1, after lever 8 amplifies 5 times, contact B on long-armed by lever 8 promotes digital dial gauge 7, the indicating value of digital dial gauge 7 can be amplified 10 times, accuracy reaches 0.0002mm.
Concrete operations are according to calibrating procedure: first by the penetrator removal, the present invention is placed on sclerometer scaffold tower center and rises scaffold tower and make sclerometer dial plate indication reach just test force assigned position, rotating hand button 11 makes indicator aim at 0, rotate hand button 11 during calibrating, by standard code, on 10HR, 45HR, tri-positions of 80HR, sequentially carry out respectively, read the check actual value on digital dial gauge 7, calculate the error of sclerometer depth of cup measurement mechanism by formula.Calibration instrument for depth sounding device of metal Rockwell hardness tester of the present invention, meet the technical requirement of standard GB/T/T230.2-2002 and JJG112-2003 regulation fully.Digital dial gauge 7 adopts Switzerland's import, and it has the function of amplifying 10 times.Digital dial gauge 7 has output interface, can be connected with computing machine, carries out data processing and automatic printing as a result, and the present invention can also check the testing machine with the depth of cup metering such as plastics sclerometer etc.
Claims (3)
1. a calibration instrument for depth sounding device of metal Rockwell hardness tester is characterized in that: it comprises central shaft (1), adjusts screw (2), hold-doun nut (3), spring (4), axle sleeve (5), axle bed (6), digital dial gauge (7), lever (8), hollow cylinder (9), extension spring (10), hand button (11), base (12) form; Its annexation is: described central shaft (1) overlaps upper spring (4), overlaps Upper shaft sleeve (5) again, is fixed in the center pit of axle bed (6); Described axle bed (6) is arranged on the upper end of hollow cylinder (9), and tightens up with screw; Described adjustment screw (2) is by central shaft (1) top, is screwed into appropriate location in the inner bolt hole of axle bed (6), and pins with hold-doun nut (3); Contact (A) close contact on the lower transverse plane of described central shaft (1) and lever (8) galianconism; Contact (B) on described lever (8) is long-armed is the survey face close contact with digital dial gauge (7) by extension spring (10); Described digital dial gauge (7) is arranged on the lower left quarter of hollow cylinder (9), and hand button (11) is arranged on the right lower quadrant of hollow cylinder (9); Base (12) is arranged on the lower end of hollow cylinder (9).
2. calibration instrument for depth sounding device of metal Rockwell hardness tester according to claim 1, it is characterized in that: the lever ratio of described lever (8) is 5:1.
3. calibration instrument for depth sounding device of metal Rockwell hardness tester according to claim 1, it is characterized in that: digital dial gauge (7) indicating value can be amplified 10 times, and output interface is arranged, and with computing machine, is connected, and carries out data processing and result and prints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100896078A CN102213663B (en) | 2011-04-03 | 2011-04-03 | Calibration instrument for depth sounding device of metal Rockwell hardness tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100896078A CN102213663B (en) | 2011-04-03 | 2011-04-03 | Calibration instrument for depth sounding device of metal Rockwell hardness tester |
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| Publication Number | Publication Date |
|---|---|
| CN102213663A CN102213663A (en) | 2011-10-12 |
| CN102213663B true CN102213663B (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100896078A Active CN102213663B (en) | 2011-04-03 | 2011-04-03 | Calibration instrument for depth sounding device of metal Rockwell hardness tester |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884614B (en) * | 2014-03-14 | 2017-02-15 | 上海联尔试验设备有限公司 | Motor load measurement mechanism of Rockwell hardness tester |
| CN106990008A (en) * | 2017-03-02 | 2017-07-28 | 吉林市江机民科实业有限公司 | The special calibrating instrument of Rockwell apparatus Direct Test method |
| CN110208121B (en) * | 2019-07-15 | 2024-02-27 | 沈阳天星试验仪器股份有限公司 | Shear pin type hammering Brinell hardness tester applying test force through impact hammer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2343240A1 (en) * | 1976-03-01 | 1977-09-30 | Ernst Alfred | HARDNESS MEASURING DEVICE, ROCKWELL SYSTEM |
| CN2188762Y (en) * | 1993-12-23 | 1995-02-01 | 北京工业大学 | Portable durometer |
| CN1743788A (en) * | 2004-09-03 | 2006-03-08 | 深圳华粤宝电池有限公司 | Lever type dynamic pachymeter |
| CN200979522Y (en) * | 2006-12-06 | 2007-11-21 | 莱州华银试验仪器有限公司 | An automatic tracking and measuring unit of a sclerometer |
| CN100498277C (en) * | 2006-12-06 | 2009-06-10 | 莱州华银试验仪器有限公司 | Automatic adding and discharging carrier of sclerometer and measuring cell |
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