CN214502358U - Multifunctional impact sample notch detection projection screen - Google Patents
Multifunctional impact sample notch detection projection screen Download PDFInfo
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- CN214502358U CN214502358U CN202120507046.8U CN202120507046U CN214502358U CN 214502358 U CN214502358 U CN 214502358U CN 202120507046 U CN202120507046 U CN 202120507046U CN 214502358 U CN214502358 U CN 214502358U
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Abstract
The utility model discloses a multi-functional impact specimen breach detects projection screen. Comprises a glass projection screen, a first straight line and a second straight line which are perpendicular to each other, a standard V-shaped notch pattern and a standard U-shaped notch pattern are carved on the glass projection screen, the first straight line is a symmetry axis of the V-shaped notch pattern and the standard U-shaped notch pattern, the opening directions of the V-shaped notch pattern and the standard U-shaped notch pattern are consistent, the end points of the roots of the V-shaped notch pattern and the standard U-shaped notch pattern are coincided, the end part of the opening end is coincided with the second straight line, a first V-shaped notch inner line and a second V-shaped notch inner line are carved on the inner side of the scribed line of the standard V-shaped notch pattern, a first V-shaped notch outer line and a second V-shaped notch outer line are carved on the outer side of the scribed line, a first U-shaped notch inner line and a second U-shaped notch inner line are carved on the inner side of the scribed line of the standard U-shaped notch pattern, and a first U-shaped notch outer line and a second U-shaped notch outer line are carved on the outer side of the scribed line, and a groove depth measuring ruler is respectively carved on the outer sides of two ends of the opening end of the second U-shaped notch outer line.
Description
Technical Field
The utility model relates to an optical detection equipment specifically sets up an impact specimen breach and detects projection screen.
Background
The defective machining of the notch shape of the test specimen during the impact test results in a steep jump in the test results, in particular at the critical value of the test, which results in a product being rejected or acceptable with the two diametrically opposite results. At present, when an impact sample is processed, a plurality of means such as notch drawing, notch milling, notch cutting and the like are mainly adopted, the processing methods mainly ensure the precision of notch preparation by the precision of a forming cutter, and if a sample blank is not correctly installed or the cutter loses precision after being used for a long time during processing, the processed sample is out of standard, so that the test result is not accurate. In order to ensure that the notch of the processed sample is qualified, the processing quality inspection of the notch is an important quality control means. The gap inspection method currently used generally adopts an optical projector for amplification inspection. At present, the existing impact sample notch projector can only detect a single pair of U-shaped or V-shaped samples specified in the national standard GB/T229-2020 metallic material Charpy pendulum impact test method, and has the advantages of single function and low detection precision.
Disclosure of Invention
To the above-mentioned defect that exists among the prior art, the utility model provides an easy operation, detect the precision high, can satisfy simultaneously U groove sample and V groove sample in GB/T229-2020 "metal material summer than pendulum impact test method" and ASTM E23-2018 "metal material breach sample standard impact test method" and carry out the multi-functional impact sample breach detection projection screen that detects.
The utility model discloses a realize through following technical scheme: the utility model provides a multi-functional impact specimen breach detection projection screen, includes glass projection screen, characterized by: a first straight line and a second straight line which are perpendicular to each other are carved on the glass projection screen, a standard V-shaped notch pattern and a standard U-shaped notch pattern are also carved on the glass projection screen, the standard V-shaped notch pattern and the standard U-shaped notch pattern are respectively orthographic projections of a standard V-shaped notch and a standard U-shaped notch on the glass projection screen, the first straight line is a symmetry axis of the V-shaped notch pattern and the standard U-shaped notch pattern, the opening directions of the V-shaped notch pattern and the standard U-shaped notch pattern are consistent, the root end points of the V-shaped notch pattern and the standard U-shaped notch pattern are superposed, the end parts of the opening ends of the V-shaped notch pattern and the standard U-shaped notch pattern are superposed with the second straight line, a first V-shaped notch line and a second V-shaped notch line are carved on the inner side of a scribed line of the standard V-shaped notch pattern, the first V-shaped notch is a lower tolerance line of the V-shaped notch according to the GB/T229-2020 standard requirement, the second V-shaped notch inner line is a lower tolerance line of a V-shaped notch required by an ASTM E23-2018 standard, a first V-shaped notch outer line and a second V-shaped notch outer line are carved on the outer side of a scribed line of the standard V-shaped notch pattern, the first V-shaped notch outer line is an upper tolerance line of the V-shaped notch required by the GB/T229-2020 standard, the second V-shaped notch outer line is an upper tolerance line of the V-shaped notch required by the ASTM E23-2018 standard, a first U-shaped notch inner line and a second U-shaped notch inner line are carved on the inner side of the scribed line of the standard U-shaped notch pattern, the first U-shaped notch inner line is a lower tolerance line of the U-shaped notch required by the GB/T229-2020 standard, the second U-shaped notch inner line is a lower tolerance line of the U-shaped notch required by the ASTM E23-2018 standard, and a first U-shaped notch outer line and a second U-shaped notch outer line are carved on the outer side of the scribed line of the standard U-shaped notch pattern The first U-shaped notch outer line is an upper tolerance line of a U-shaped notch according to the GB/T229-2020 standard requirement, the second U-shaped notch outer line is an upper tolerance line of a U-shaped notch according to the ASTM E23-2018 standard requirement, groove depth measuring scales perpendicular to the second straight line are respectively carved on the outer sides of two ends of the opening end of the second U-shaped notch outer line, and the groove depth measuring scales extend to the lower portion of the second straight line.
In the utility model, the range defined by the first V-shaped notch outer line and the first V-shaped notch inner line carved on the glass projection screen is the tolerance range of the V-shaped notch according to the GB/T229-2020 standard requirement; the range defined by the outer line of the first U-shaped notch and the inner line of the first U-shaped notch carved on the glass projection screen is the tolerance range of the U-shaped notch according to the GB/T229-2020 standard requirement; the range defined by the outer line of the second V-shaped notch and the inner line of the second V-shaped notch carved on the glass projection screen is the tolerance range of the V-shaped notch according to the ASTM E23-2018 standard; the range defined by the outer line of the second U-shaped notch and the inner line of the second U-shaped notch carved on the glass projection screen is the tolerance range of the U-shaped notch according to the ASTM E23-2018 standard. During detection, according to different test standard requirements, when the projection of the sample notch is in the range of the corresponding standard requirement, the sample notch is qualified, and the sample notch is unqualified outside the range.
Further, the standard V-notch pattern and the standard U-notch pattern both had a height and an opening width of 2 mm.
The utility model has the advantages that: the utility model discloses a projection screen can satisfy simultaneously GB/T229-2020 metal material summer than pendulum impact test method and ASTM E23-2018 detection to U groove sample and V groove sample in the metal material breach sample standard impact test method, and the function is complete, easy operation, and the precision is high, can compensate prior art's not enough.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure, 1, a groove depth measuring scale, 2, a first V-shaped notch outer line, 3, a second V-shaped notch outer line, 4, a standard V-shaped notch pattern, 5, a second V-shaped notch inner line, 6, a first V-shaped notch inner line, 7, a first U-shaped notch outer line, 8, a second U-shaped notch outer line, 9, a standard U-shaped notch pattern, 10, a second U-shaped notch inner line, 11, a first U-shaped notch inner line, 12, a first straight line, 13, a second straight line, 14 and a glass projection screen.
Detailed Description
The invention will now be further described by way of non-limiting examples with reference to the accompanying drawings:
as shown in the attached drawings, the multifunctional impact sample notch detection projection screen comprises a glass projection screen 14, wherein the glass projection screen 14 is made of transparent or semitransparent glass, a first straight line 12 and a second straight line 13 which are perpendicular to each other are engraved on the glass projection screen, a standard V-notch pattern 4 and a standard U-notch pattern 9 are further engraved on the glass projection screen, and the standard V-notch pattern 4 and the standard U-notch pattern 9 are orthographic projections of a standard V-notch and a standard U-notch on the glass projection screen respectively. The standard V-shaped notch pattern 4 and the standard U-shaped notch pattern 9 are carved according to the requirements of the national standard GB/T229-2020 < metallic material Charpy impact test method > and ASTM E23-2018 < metallic material notch sample standard impact test method >. The first straight line 12 is a symmetry axis of the V-shaped notch pattern 4 and the standard U-shaped notch pattern 9, the opening directions of the V-shaped notch pattern 4 and the standard U-shaped notch pattern 9 are the same, the root end points of the V-shaped notch pattern and the standard U-shaped notch pattern coincide, and the end parts of the opening ends of the V-shaped notch pattern and the standard U-shaped notch pattern coincide with the second straight line 13. A first V-shaped notch inner line 6 and a second V-shaped notch inner line 5 are carved on the inner side of a scribed line of the standard V-shaped notch pattern 4, the first V-shaped notch inner line 6 is a lower tolerance line of a V-shaped notch according to the GB/T229-2020 standard, the second V-shaped notch inner line 5 is a lower tolerance line of a V-shaped notch according to the ASTM E23-2018 standard, a first V-shaped notch outer line 2 and a second V-shaped notch outer line 3 are carved on the outer side of the scribed line of the standard V-shaped notch pattern 4, the first V-shaped notch outer line 2 is an upper tolerance line of a V-shaped notch according to the GB/T229-2020 standard, the second V-shaped notch outer line 3 is an upper tolerance line of a V-shaped notch according to the ASTM E23-2018 standard, and a first U-shaped notch inner line 11 and a second U-shaped notch inner line 10 are carved on the inner side of the scribed line of the standard U-shaped notch pattern 9, the first U-shaped notch inner line 11 is a lower tolerance line of a U-shaped notch according to the requirement of the GB/T229-2020 standard, the second U-shaped notch inner line 10 is a lower tolerance line of a U-shaped notch according to the requirement of the ASTM E23-2018 standard, a first U-shaped notch outer line 7 and a second U-shaped notch outer line 8 are engraved on the outer side of a scribed line of the standard U-shaped notch pattern 9, the first U-shaped notch outer line 7 is an upper tolerance line of a U-shaped notch according to the requirement of the GB/T229-2020 standard, the second U-shaped notch outer line 8 is an upper tolerance line of a U-shaped notch according to the requirement of the ASTM E23-2018 standard, a groove depth measuring ruler 1 perpendicular to the second straight line 13 is engraved on the outer side of both ends of an open end of the second U-shaped notch outer line 8, and the groove depth measuring ruler 1 extends below the second straight line 13. The standard V-notch pattern 4 and the standard U-notch pattern 9 each have a height and an opening width of 2 mm. In the Charpy pendulum impact test, GB/T229-2020 requirements for V-shaped notches in the metallic material Charpy pendulum impact test method are as follows: the depth is 2 +/-0.075 mm, the included angle of the V-shaped opening is 45 +/-2 degrees, and the radius of the root part of the gap is R0.25 +/-0.025 mm; the requirements for the U-shaped notch are that the depth is 2 plus or minus 0.09mm, and the root radius of the notch is R1 plus or minus 0.07 mm. The requirements for a V-notch in ASTM E23-2018 Standard impact test method for notched specimens of Metal materials are: the depth is 2 +/-0.025 mm, the included angle of the V-shaped opening is 45 +/-1 degrees, and the radius of the root part of the gap is R0.25 +/-0.025 mm; the requirements for the U-shaped notch are as follows: the depth is 2 +/-0.025 mm, and the radius of the root of the notch is R1 +/-0.025 mm.
In the utility model, the area between the first V-shaped notch outer line 2 and the first V-shaped notch inner line 6 engraved on the glass projection screen is the tolerance range of the V-shaped notch according to the GB/T229-2020 standard requirement; the area between the first U-shaped notch outer line 7 and the first U-shaped notch inner line 11 carved on the glass projection screen is the tolerance range of the U-shaped notch according to the GB/T229-2020 standard requirement; the area between the second V-shaped notch outer line 3 and the second V-shaped notch inner line 5 carved on the glass projection screen is the tolerance range of the V-shaped notch according to the ASTM E23-2018 standard requirement; the area between the outer line 8 of the second U-shaped notch and the inner line 10 of the second U-shaped notch carved on the glass projection screen is the tolerance range of the U-shaped notch according to the ASTM E23-2018 standard. Utilize the utility model discloses carry out V type breach sample and U type breach sample and examine time measuring, according to the test standard requirement of difference, be qualified when the within range of corresponding standard requirement is given as to the projection of sample breach, be unqualified when outside the scope. The groove depth measuring scale 1 is used for detecting whether the depth of the V-shaped notch and the V-shaped notch meets the requirement or not.
The utility model provides a groove depth dipperstick, first V type breach external line, first V type breach internal line, second V type breach external line, second V type breach internal line, standard V type breach pattern, standard U type breach pattern, first U type breach external line, second U type breach internal line, first straight line, second straight line all are drawn on glass projection screen through lithography, for prior art.
The utility model discloses a require according to GB/T229-2020, ASTM E23-2018 on glass projection screen to carve standard V type breach pattern, the detection that GB/T229-2020 and ASTM E23-2018 standard required can be conveniently carried out to V type breach sample and U type breach sample to tolerance line and the downhill tolerance line of U type breach, groove depth dipperstick about the upper and lower tolerance line of standard U type breach, standard U type breach pattern and V type breach, easy operation, it is high to detect the precision.
Other parts in this embodiment are the prior art, and are not described herein again.
Claims (2)
1. The utility model provides a multi-functional impact specimen breach detection projection screen, includes glass projection screen, characterized by: a first straight line (12) and a second straight line (13) which are perpendicular to each other are carved on the glass projection screen, a standard V-shaped notch pattern (4) and a standard U-shaped notch pattern (9) are also carved on the glass projection screen, the standard V-shaped notch pattern (4) and the standard U-shaped notch pattern (9) are respectively orthographic projections of a standard V-shaped notch and a standard U-shaped notch on the glass projection screen, the first straight line (12) is a symmetry axis of the V-shaped notch pattern (4) and the standard U-shaped notch pattern (9), the opening directions of the V-shaped notch pattern (4) and the standard U-shaped notch pattern (9) are consistent, the root end points of the V-shaped notch pattern and the standard U-shaped notch pattern coincide, the end parts of the opening ends of the V-shaped notch pattern and the standard U-shaped notch pattern are coincident with each other, a first V-shaped notch inner line (6) and a second V-shaped notch inner line (5) are carved on the inner side of a scribed line of the standard V-shaped notch pattern (4), the first inner V-shaped notch line (6) is a lower tolerance line of a V-shaped notch according to GB/T229-2020 standard requirements, the second inner V-shaped notch line (5) is a lower tolerance line of a V-shaped notch according to ASTM E23-2018 standard requirements, a first outer V-shaped notch line (2) and a second outer V-shaped notch line (3) are carved on the outer side of a scribed line of the standard V-shaped notch pattern (4), the first outer V-shaped notch line (2) is an upper tolerance line of a V-shaped notch according to GB/T229-2020 standard requirements, the second outer V-shaped notch line (3) is an upper tolerance line of a V-shaped notch according to ASTM E23-2018 standard requirements, a first inner U-shaped notch line (11) and a second inner U-shaped notch line (10) are carved on the inner side of a scribed line of the standard U-shaped notch pattern (9), and the first inner U-shaped notch line (11) is a lower tolerance line of a U-shaped notch according to GB/T229-2020 standard requirements, the second U-shaped notch inner line (10) is a lower tolerance line of a U-shaped notch according to the standard requirement of ASTM E23-2018, a first U-shaped notch outer line (7) and a second U-shaped notch outer line (8) are carved on the outer side of a scribed line of the standard U-shaped notch pattern (9), the first U-shaped notch outer line (7) is an upper tolerance line of the U-shaped notch according to the standard requirement of GB/T229-2020, the second U-shaped notch outer line (8) is an upper tolerance line of the U-shaped notch according to the standard requirement of ASTM E23-2018, a groove depth measuring scale (1) perpendicular to the second straight line (13) is respectively carved on the outer sides of two ends of an opening end of the second U-shaped notch outer line (8), and the groove depth measuring scale (1) extends to the lower part of the second straight line (13).
2. The multi-functional impact specimen notch detection projection screen of claim 1, wherein: the height and the opening width of the standard V-shaped notch pattern (4) and the standard U-shaped notch pattern (9) are both 2 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120507046.8U CN214502358U (en) | 2021-03-10 | 2021-03-10 | Multifunctional impact sample notch detection projection screen |
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| CN202120507046.8U CN214502358U (en) | 2021-03-10 | 2021-03-10 | Multifunctional impact sample notch detection projection screen |
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| CN214502358U true CN214502358U (en) | 2021-10-26 |
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