CN212363849U - Long shaft class steel part hardness test surface preliminary treatment measuring tool - Google Patents
Long shaft class steel part hardness test surface preliminary treatment measuring tool Download PDFInfo
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- CN212363849U CN212363849U CN202020933427.8U CN202020933427U CN212363849U CN 212363849 U CN212363849 U CN 212363849U CN 202020933427 U CN202020933427 U CN 202020933427U CN 212363849 U CN212363849 U CN 212363849U
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Abstract
The utility model relates to a major axis class steel part hardness test surface preliminary treatment measuring tool, including placing the edge of a knife shape ruler at the arc surface top at the hardness test plane both ends of major axis class steel part perpendicularly, there is the angle of opening and shutting through fixed screw fixed mounting on edge of a knife shape ruler to be 900The hinge is movably provided with a feeler gauge which can extend into a gap between the knife edge-shaped ruler and the hardness testing plane through a hinge connecting piece, the pretreatment measuring tool for the hardness testing surface of the long-axis steel part is light and easy to carry, and the hardness testing of the long-axis steel part needsThe polishing depth is comprehensively detected, the measurement is accurate, the labor intensity is reduced, and the inspection efficiency is improved.
Description
Technical Field
The utility model relates to a steel part hardness test face preliminary treatment measuring tool especially relates to a major axis class steel part hardness test face preliminary treatment measuring tool.
Background
GB/T231.1-2018 Metal materials Brinell hardness test method the first part of the test method, clause 6.1 stipulates: the surface of the sample should be flat and smooth, and should not have oxide skin and external dirt. The surface of the test specimen should be such as to ensure accurate measurement of the diameter of the indentation. Measuring the hardness of the workpiece after the long-shaft steel piece heat treatment process, and pretreating a hardness test surface before measurement: and removing a decarburized layer and an oxidized layer on the surface of the workpiece, and polishing a hardness test plane. The workpiece polishing depth is generally measured by a depth gauge or a depth meter, the measurement is only to take point measurement on a polished hardness test plane, the point measurement needs to be taken repeatedly, the efficiency is low, certain limitation exists, and the measurement result is not covered completely.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome exist among the prior art not enough and provide one kind and can accomplish the major axis class steel hardness test surface preliminary treatment measuring tool to the inspection of major axis class steel hardness test surface preliminary treatment effect.
The technical scheme of the utility model is realized like this:
a pretreatment measuring tool for a hardness testing surface of a long-axis steel part comprises a knife edge-shaped ruler which is vertically placed at the top of an arc surface at two ends of a hardness testing plane of the long-axis steel part, wherein an opening and closing angle of 90 degrees is fixedly installed on the knife edge-shaped ruler through fixing screws0The lower part of the hinge is movably provided with a feeler gauge which can extend into a gap between the knife edge-shaped ruler and the hardness testing plane through a hinge connecting piece.
And the knife edge-shaped ruler between the knife edge-shaped ruler and the hinge is also provided with heat insulation bakelite.
The thickness of the feeler gauge is determined according to the polishing depth of a hardness test plane of the long-axis steel piece.
The feeler covers the entire hardness test plane.
The knife edge-shaped ruler is a ruler with a measuring surface in a knife edge shape, is a typical material measuring tool for measuring the plane shape error of a workpiece, and has the specification of 75 mm.
The specification of the hinge is 25 multiplied by 40 multiplied by 2mm, and the height of the hinge is consistent with that of the knife edge-shaped ruler.
The gauge is 75mm, and the thickness of the gauge is 0.05-3 mm.
Compared with the prior art, the utility model discloses following beneficial effect has:
the pretreatment measuring tool for the hardness testing surface of the long-shaft steel part is light and easy to carry, can comprehensively detect the polishing depth required by the hardness testing of the long-shaft steel part, is accurate in measurement, reduces the labor intensity and improves the testing efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The labels in the figures are: 1. a knife-edge-shaped ruler; 2. a hinge; 3. fixing screws; 4. a feeler gauge; 5. a hinge coupling; 6. heat insulation bakelite; 7. long-axis steel parts; 8. and (4) a hardness test plane.
Detailed Description
As shown in figure 1, the tool for preprocessing and measuring the hardness test surface of the long-axis steel part comprises a knife-edge-shaped ruler 1 vertically placed at the top of an arc surface at two ends of a hardness test plane 8 of a long-axis steel part 7, wherein the knife-edge-shaped ruler 1 is fixedly provided with an opening and closing angle of 90 degrees through a fixing screw 30The lower part of the hinge 2 is movably provided with a feeler 4 which can extend into a gap between the knife-edge-shaped ruler 1 and the hardness testing plane 8 through a hinge connecting piece 5.
And a thermal insulation bakelite 6 is also arranged on the knife-edge-shaped ruler 1 between the knife-edge-shaped ruler 1 and the hinge 2.
The thickness of the feeler 4 is determined according to the sanding depth of the hardness test plane 8 of the long-axis steel member 7.
The feeler 4 covers the entire hardness test plane 8.
The specific measurement steps are as follows:
1. determining 4 thickness pieces of the feeler gauge corresponding to the polishing depth of the hardness test pretreatment of the long-axis steel part, and selecting 2mm thickness pieces of the feeler gauge 4 if the polishing depth is required to be (2-3) mm.
2. Holding the heat insulation plate 6 on the knife edge-shaped ruler 1 by hand to avoid temperature influence on measurement and corrosion, vertically placing the cutting edge measuring surface of the knife edge-shaped ruler 1 on the top of the arc surface at two ends of the hardness testing plane 8 on the workpiece 7, and opening the hinge to 90 degrees0And a 2mm thick sheet in the feeler 4 extends into a gap between the knife-edge-shaped ruler 1 and the hardness testing plane 8, the 2mm thick sheet in the feeler 4 is rotated to cover the whole hardness testing plane 8, the clamping stagnation phenomenon is avoided, and the polishing depth meets the requirement of (2-3) mm. If the clamping stagnation phenomenon occurs, the grinding depth does not meet the requirement of (2-3) mm.
The utility model discloses a culvert edge of a knife shape ruler 1 or replace edge of a knife shape ruler form, all in protective range.
The knife edge-shaped ruler is a ruler with a measuring surface in a knife edge shape, is a typical material measuring tool for measuring the plane shape error of a workpiece, and has the specification of 75 mm.
The gauge is 75mm in specification, and the thickness of the gauge is (0.05-3) mm.
The hinge has an opening and closing angle of 90 degrees0Specification: (25X 40X 2) mm, the hinge height is consistent with the height of the knife-edge-shaped ruler.
Claims (7)
1. The utility model provides a major axis class steel part hardness test surface preliminary treatment measuring tool, includes edge of a knife shape ruler (1) at the arc surface top at the hardness test plane (8) both ends of placing perpendicularly major axis class steel part (7), its characterized in that: a hinge (2) with an opening and closing angle of 90 degrees is fixedly arranged on the knife edge-shaped ruler (1) through a fixing screw (3), and a feeler gauge (4) which can extend into a gap between the knife edge-shaped ruler (1) and the hardness testing plane (8) is movably arranged below the hinge (2) through a hinge connecting piece (5).
2. The tool for preprocessing and measuring the hardness test surface of the long-axis steel part as claimed in claim 1, wherein: and a heat insulation bakelite (6) is also arranged on the knife edge-shaped ruler (1) between the knife edge-shaped ruler (1) and the hinge (2).
3. The tool for preprocessing and measuring the hardness test surface of the long-axis steel part as claimed in claim 1, wherein: the thickness of the feeler gauge (4) is determined according to the grinding depth of the hardness test plane (8) of the long-axis steel piece (7).
4. The tool for preprocessing and measuring the hardness test surface of the long-axis steel part as claimed in claim 1, wherein: the feeler (4) covers the entire hardness test plane (8).
5. The tool for preprocessing and measuring the hardness test surface of the long-axis steel part as claimed in claim 1, wherein: the knife edge-shaped ruler is a ruler with a measuring surface in a knife edge shape, is a typical material measuring tool for measuring the plane shape error of a workpiece, and has the specification of 75 mm.
6. The tool for preprocessing and measuring the hardness test surface of the long-axis steel part as claimed in claim 1, wherein: the gauge is 75mm, and the thickness of the gauge is 0.05-3 mm.
7. The tool for preprocessing and measuring the hardness test surface of the long-axis steel part as claimed in claim 1, wherein: the specification of the hinge is 25 multiplied by 40 multiplied by 2mm, and the height of the hinge is consistent with that of the knife edge-shaped ruler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020933427.8U CN212363849U (en) | 2020-05-28 | 2020-05-28 | Long shaft class steel part hardness test surface preliminary treatment measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020933427.8U CN212363849U (en) | 2020-05-28 | 2020-05-28 | Long shaft class steel part hardness test surface preliminary treatment measuring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212363849U true CN212363849U (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020933427.8U Active CN212363849U (en) | 2020-05-28 | 2020-05-28 | Long shaft class steel part hardness test surface preliminary treatment measuring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212363849U (en) |
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2020
- 2020-05-28 CN CN202020933427.8U patent/CN212363849U/en active Active
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