CN218600457U - Measuring device for size elements of taper hole - Google Patents
Measuring device for size elements of taper hole Download PDFInfo
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- CN218600457U CN218600457U CN202223288158.2U CN202223288158U CN218600457U CN 218600457 U CN218600457 U CN 218600457U CN 202223288158 U CN202223288158 U CN 202223288158U CN 218600457 U CN218600457 U CN 218600457U
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- taper hole
- abutting part
- taper
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Abstract
The application relates to a measuring device for dimension elements of a taper hole, which comprises an abutting part and a handle; the abutting part is of a cone frustum structure, and the diameter of the top surface of the abutting part is larger than that of the bottom surface of the abutting part; the taper of the abutting part is equal to the standard taper of the taper hole to be detected, and the top surface diameter of the abutting part is equal to the standard inner diameter of the taper hole to be detected in size; the bottom surface of the handle is connected with the top surface of the abutting part, and the side surface of the handle is perpendicular to the top surface of the abutting part; the length of the handle is larger than the standard axial size of the taper hole to be measured. The application provides a measuring device of taper hole size key element can detect whether the tapering, the axial dimension, the internal diameter size of part taper hole accord with the standard, allows in time, accurate inspection and control to part taper hole quality in process of production, is favorable to improving the efficiency of part taper hole quality inspection.
Description
Technical Field
The utility model belongs to the technical field of measuring device technique and specifically relates to a measuring device of taper hole size key element is related to.
Background
In the machining and detection processes of mechanical parts, taper holes exist in some parts; referring to fig. 1, the cavity of the tapered bore exhibits an inverted truncated cone or conical configuration: the cross-sectional diameter of the tapered bore decreases from the orifice to the bottom of the bore. The size elements of the taper hole of the part relate to the taper, the axial size and the inner diameter size of the taper hole, and whether the three size elements meet the standard or not is also the key for the success of the assembly steps. However, the size factor of the taper hole of the part needs to be detected by a measuring machine with huge volume at present, the size of the taper hole of the part is difficult to accurately detect on site, and the quality of the taper hole is not easy to accurately detect and control in time in the production process of the part. Therefore, the measuring device for the size factor of the taper hole is simple in structure, reliable in precision and low in cost, and can be applied to all links of the production process.
SUMMERY OF THE UTILITY MODEL
In order to improve the problem in the background art, the utility model provides a measuring device of taper hole size key element.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a measuring device for a taper hole size factor comprises an abutting part and a handle; the abutting part is of a cone frustum structure, and the diameter of the top surface of the abutting part is larger than that of the bottom surface of the abutting part; the taper of the abutting part is equal to the standard taper of the taper hole to be detected, and the top surface diameter of the abutting part is equal to the standard inner diameter of the taper hole to be detected in size; the bottom surface of the handle is connected with the top surface of the abutting part, and the side surface of the handle is perpendicular to the top surface of the abutting part; the length of the handle is larger than the standard axial size of the taper hole to be measured.
The measuring device provided by the application can be used for detecting the taper, the axial dimension and the inner diameter dimension of the part taper hole, and the taper hole of the part is of an inverted cone frustum structure or an inverted cone structure with the diameter gradually reduced from the hole opening to the hole bottom; in machining a tapered bore of a part, there are standard requirements for the dimension elements of the tapered bore, including a standard taper, a standard inside diameter dimension, and a standard axial dimension, where the correlation of the standard axial dimension to the standard inside diameter dimension is: and selecting a cross section of the taper hole with a standard axial dimension from the orifice inside a standard taper hole meeting the requirement, wherein the diameter of the cross section of the taper hole is the standard inner diameter dimension.
Firstly, the measuring device provided by the application is used for checking the taper of the taper hole to be measured. Checking whether the taper of the taper hole to be detected is qualified by a painting inspection method: coating three color development lines on the inner side surface of the taper hole to be detected by using a color development agent, wherein the color development lines extend along a bus of the inner side surface of the taper hole and are uniformly distributed along the circumferential direction in an equal distribution manner; slowly placing the abutting part into the taper hole to be detected to enable the conical surface of the abutting part to be tightly attached to the inner wall of the taper hole to be detected, rotating the abutting part in a one-way mode, enabling the rotating angle to be not more than 60 degrees, taking out the abutting part and observing the coloring condition of the conical surface. Because the taper of the abutting part is equal to the standard taper of the taper hole to be detected, if the taper surface of the abutting part is not uniformly painted, the fact that the taper of the taper hole to be detected has an error with the standard taper is shown.
And on the premise that the taper of the taper hole to be measured is qualified, the measuring device is used for checking the inner diameter size and the axial size of the taper hole to be measured. After the abutting piece is placed into the taper hole, measuring a distance H2 between the surface of the taper hole to be measured and the top surface of the handle, subtracting H2 from the total length H1 of the handle (the total length of the handle is equal to the distance between the top surface of the abutting piece and the top surface of the handle), namely obtaining an axial distance H between the cross section of the taper hole to be measured, the diameter of which is the standard inner diameter size, and the surface of the taper hole to be measured, comparing the axial distance H with the standard axial size, and if the axial distance H is equal to the standard axial size, determining that the axial size of the taper hole to be measured is qualified; meanwhile, the axial size is related to the inner diameter size, so that the inner diameter size of the taper hole to be measured is qualified.
The device that this application provided has the characteristics that the simple operation, the accuracy is high, can be applied to the narrow and small part that is difficult to detect the taper hole in taper hole inner space, also can be applied to and can't use the part that the measuring machine detected the taper hole because of the shape is special, is favorable to controlling part taper hole quality in the production process.
Preferably, the side surface of the handle is provided with a concavo-convex pattern at regular intervals along the circumference thereof.
Preferably, the side surface of the handle is provided with scale marks along the length direction; the two ends of the length direction of the scale line extend to the two ends of the handle respectively, and the zero scale of the scale line is flush with the top surface of the handle.
The handle has two functions, one is to take and place and rotate the abutting part by holding the handle, in the function, patterns on the side surface of the handle play a role in increasing friction force and facilitating grasping; secondly, the handle has the function of detecting the axial size of the taper hole, in order to obtain the axial distance H, the total length H1 of the handle and the distance H2 between the top surface of the handle and the hole opening position surface of the handle after the abutting part is placed into the taper hole to be detected need to be known, wherein the total length H1 of the handle is the known length, scale marks are arranged on the side surface of the handle, and the zero scale of the scale marks is flush with the top surface of the handle, so that the reading of the distance H2 between the hole opening position surface and the top surface of the handle is facilitated.
Preferably, the abutting piece and the handle are made of high-carbon alloy steel.
Preferably, the connecting edge of the handle and the abutting part is provided with a round chamfer, and the radius of the round chamfer is 2-3 mm.
The whole edge of the joint of the handle and the abutting part is provided with a round chamfer transition, so that the high-carbon alloy steel is prevented from cracking due to stress concentration during quenching. And the chamfer structure is arranged before the connecting edge of the top surface of the abutting part and the conical surface is quenched, and the chamfer structure is removed in the grinding process after quenching, so that the purpose of preventing the chamfer from influencing the accuracy of measuring the inner diameter size and the axial size of the conical hole is achieved.
Preferably, the handle is of cylindrical configuration and is disposed coaxially with the abutment.
Preferably, a concave groove is formed in the center of the top surface of the handle, and a first central hole is formed in the center of the bottom of the concave groove; and a second center hole is formed in the bottom surface of the abutting part corresponding to the first center hole. The first central hole and the second central hole are used for fixing the measuring device during grinding, and the arrangement of the concave groove is favorable for simplifying the processing difficulty of the top surface of the handle and avoiding the occurrence of a part which is not ground and protrudes on the top surface of the handle.
Preferably, the abutment is integrally formed with the handle.
To sum up, the utility model discloses following beneficial effect has:
1. the measuring device of taper hole size key element that this application provided can detect whether the tapering, the axial dimension, the internal diameter size of part taper hole accord with the standard, allows in the production process to carry out timely, accurate inspection and control to part taper hole quality, is favorable to improving the efficiency of part taper hole quality inspection.
2. The measuring device for the size factor of the taper hole has the advantages of simple structure, reliable precision and low cost, can be applied to parts which are difficult to detect due to the narrow inner space of the taper hole, and can also be applied to parts which cannot detect the taper hole by using a measuring machine due to special shapes.
Drawings
Fig. 1 is a cross-sectional view of a cone hole to be measured.
Fig. 2 is a front view of a measuring device for measuring a dimension factor of a taper hole according to the present invention.
Fig. 3 is a rear view of the measuring device for the size factor of the taper hole of the present invention.
Fig. 4 isbase:Sub>A cross-sectional view atbase:Sub>A-base:Sub>A in fig. 3.
Fig. 5 is a cross-sectional view of the taper hole to be measured with the measuring device for measuring the dimension factor of the taper hole according to the present invention.
Description of the reference numerals: 1. a part; 11. a taper hole to be detected; 2. an abutting member; 21. a second central hole; 3. a handle; 31. a dimple; 311. a first central hole; 32. scale marks.
Detailed Description
The present invention will be described in further detail with reference to fig. 1 to 5. For convenience of description, the terms "upper", "lower", "left" and "right" are used to refer to the same direction as the upper, lower, left, right, etc. of the drawings, and the terms "first", "second", etc. are used for descriptive distinction and have no other special meanings.
Referring to fig. 1-5, the present embodiment provides a measuring device for a dimension factor of a taper hole, which includes an abutment member 2 and a handle 3, wherein the abutment member 2 and the handle 3 are made of high carbon alloy steel. The abutting piece 2 is used for measuring a taper hole of the part 1, and the taper hole 11 to be measured is an inverted cone frustum structure or an inverted cone structure with the diameter gradually reduced from the orifice to the bottom of the hole; corresponding to the taper hole 11 to be detected, the abutting part 2 is of a truncated cone structure, the taper of the abutting part is equal to the standard taper of the taper hole 11 to be detected, and the top surface diameter of the abutting part 2 is equal to the standard inner diameter of the taper hole 11 to be detected; the diameter of the top surface of the abutting part 2 is larger than that of the bottom surface thereof, and the diameter of the bottom surface of the abutting part 2 is larger than that of the cross section of the bottom of the taper hole 11 to be measured.
The handle 3 is a cylindrical structure, and the length of the handle is larger than the standard axial size of the taper hole 11 to be measured. The handle 3 and the abutting part 2 are coaxially arranged and integrally formed, and the length direction of the handle 3 is vertical to the top surface of the abutting part 2; the bottom surface of the handle 3 is connected with the top surface of the abutting part 2; the connecting edge of the handle 3 and the abutting part 2 is provided with a round chamfer with the radius of 2-3 mm along the circumferential direction. The side surface of the handle 3 is provided with a concavo-convex pattern at regular intervals along the circumferential direction thereof by a knurling process.
The center of the top surface of the handle 3 is provided with a concave groove 31, and the center of the bottom of the concave groove 31 is provided with a first central hole 311. The bottom surface of the abutting member 2 is provided with a second center hole 21 corresponding to the first center hole 311.
The implementation principle of the embodiment is as follows:
1) The measuring device for the size factor of the taper hole provided by the embodiment comprises the following steps: after the material is blanked, annealing treatment is first performed. After the annealing treatment is finished, carrying out primary turning on the material; in the process of primary turning, in order to ensure the precision of the final measuring device, firstly, the top surface and the side surface of the handle 3, a concave groove 31, a first center hole 311, patterns and a round chamfer of the connecting edge of the handle and the abutting part are machined; after turning the handle 3, the handle 3 is clamped, and the top surface, the bottom surface and the conical surface of the abutting part 2 and the second center hole 21 arranged on the abutting part 2 are turned. In particular, when turning the abutment member 2, the connecting edge of the top surface and the conical surface is firstly rounded with a radius of 0.5mm to prevent the material from cracking during quenching. It should be noted that, in the whole primary turning process, machining allowance of 0.3mm is reserved for the top surface of the handle, the top surface of the abutting part and the conical surface of the abutting part.
After the primary turning is finished, quenching treatment is carried out again until the surface hardness value of the measuring device is 60-65 HRC, and low-temperature tempering is carried out. Performing finish machining on a universal cylindrical grinder, namely grinding and machining the conical surface of the abutting part 2 at first to ensure that the taper of the abutting part 2 is consistent with the standard taper of the taper hole 11 to be detected; secondly, grinding the top surface of the abutting part 2 to make the diameter of the abutting part consistent with the standard inner diameter of the taper hole 11 to be measured; and finally, grinding the top surface of the handle 3 to ensure that the total length of the handle 3 is greater than the standard axial size of the taper hole 11 to be measured, recording the total length of the handle 3 as H1, and ensuring that the total length of the handle 3 is equal to the distance between the top surface of the abutting part 2 and the top surface of the handle 3.
2) The measuring device for measuring the dimension factor of the taper hole provided by the embodiment is used for detecting the taper dimension, the inner diameter dimension and the axial dimension of the taper hole 11 to be measured, and comprises the following steps:
first, the taper of the taper hole 11 to be measured is checked using the measuring apparatus provided in the present application. And (3) checking whether the taper of the taper hole 11 to be detected meets the standard taper through a painting checking method: coating three color development lines on the inner side surface of the taper hole 11 to be detected by using a color development agent, wherein the color development lines extend along a bus of the inner side surface of the taper hole and are uniformly distributed along the circumferential direction in an equal distribution manner; slowly putting the abutting part 2 into the taper hole 11 to be detected, enabling the conical surface of the abutting part 2 to be tightly attached to the inner wall of the taper hole 11 to be detected, rotating the abutting part 2 in a one-way mode, enabling the rotating angle to be not larger than 60 degrees, taking out the abutting part 2 and observing the coloring condition of the conical surface. Because the taper of the abutting part 2 is equal to the standard taper of the taper hole 11 to be measured, if the taper of the abutting part 2 is painted unevenly, it is determined that the taper of the taper hole 11 to be measured has an error with the standard taper, otherwise, it is determined that the taper of the taper hole 11 to be measured is qualified.
Secondly, on the premise that the taper of the taper hole 11 to be measured is qualified, the measuring device is used for checking the inner diameter size and the axial size of the taper hole 11 to be measured. After the abutting piece 2 is placed in the taper hole, measuring the distance H2 between the plane of the orifice of the taper hole 11 to be measured and the top surface of the handle 3, and subtracting H2 from the total length H1 of the handle 3 to obtain the axial distance H between the cross section with the diameter of the standard inner diameter size in the taper hole 11 to be measured and the plane of the orifice, wherein the calculation formula is H = H1-H2. And comparing the axial distance H with the standard axial dimension, and if the axial distance H is equal to the standard axial dimension, determining that the axial dimension of the taper hole 11 to be measured is qualified. There is a correlation between the axial dimension and the inner diameter dimension, which is: inside a standard taper hole meeting the requirement, a cross section with a standard axial dimension from the orifice is selected, and the diameter of the cross section is the standard inner diameter dimension. When the axial size of the taper hole 11 to be measured meets the standard, it is indirectly shown that the inner diameter size of the taper hole 11 to be measured is also qualified.
Particularly, when reading H2, an external height measuring device can be used for measuring the distance between the surface where the hole opening of the taper hole 11 to be measured is located and the top surface of the handle 3; or, the scale marks 32 may be arranged on the side surface of the handle 3 along the direction of the generatrix, and the numerical value of H2 is obtained by observing the number indicating that the surface where the orifice of the taper hole 11 to be measured is aligned with the scale marks 32. Wherein, if use the scale mark to measure H2, must utilize laser engraving technique at the handle side sculpture scale mark when the device preparation, the both ends of scale mark length direction extend to the both ends of handle respectively, and the zero scale of scale mark flushes with the top surface of handle.
The above is the preferred embodiment of the utility model, not limit according to this the utility model discloses a protection scope, the event: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. A measuring device for a dimension element of a taper hole is characterized in that: comprises a butting piece (2) and a handle (3); the abutting part (2) is of a cone frustum structure, and the diameter of the top surface of the abutting part (2) is larger than that of the bottom surface of the abutting part; the taper of the abutting part (2) is equal to the standard taper of the taper hole (11) to be detected, and the top surface diameter of the abutting part (2) is equal to the standard inner diameter of the taper hole (11) to be detected; the bottom surface of the handle (3) is connected with the top surface of the abutting part (2), and the side surface of the handle (3) is perpendicular to the top surface of the abutting part (2); the length of the handle (3) is larger than the standard axial size of the taper hole (11) to be measured.
2. A taper hole size factor measuring apparatus according to claim 1, wherein: the side surface of the handle (3) is uniformly provided with concave-convex patterns at intervals along the circumference.
3. A taper hole size factor measuring apparatus according to claim 1, wherein: scale marks (32) are arranged on the side surface of the handle (3) along the length direction of the handle; the two ends of the length direction of the scale marks (32) extend to the two ends of the handle (3) respectively, and the zero scale of the scale marks (32) is flush with the top surface of the handle (3).
4. A taper hole size factor measuring device according to claim 1, wherein: the abutting piece (2) and the handle (3) are made of high-carbon alloy steel.
5. The apparatus for measuring the dimensional feature of the tapered hole according to claim 4, wherein: the connecting edge of the handle (3) and the abutting part (2) is provided with a round chamfer, and the radius of the round chamfer is 2-3 mm.
6. A taper hole size factor measuring apparatus according to claim 1, wherein: the handle (3) is of a cylindrical structure and is arranged coaxially with the abutting piece (2).
7. The apparatus for measuring a dimensional factor of a tapered hole according to claim 6, wherein: a concave groove (31) is formed in the center of the top surface of the handle (3), and a first central hole (311) is formed in the center of the bottom of the concave groove (31); and a second center hole (21) is arranged on the bottom surface of the abutting part (2) corresponding to the first center hole (311).
8. A taper hole size factor measuring device according to claim 1, wherein: the abutting part (2) and the handle (3) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223288158.2U CN218600457U (en) | 2022-12-08 | 2022-12-08 | Measuring device for size elements of taper hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223288158.2U CN218600457U (en) | 2022-12-08 | 2022-12-08 | Measuring device for size elements of taper hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218600457U true CN218600457U (en) | 2023-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223288158.2U Active CN218600457U (en) | 2022-12-08 | 2022-12-08 | Measuring device for size elements of taper hole |
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| Country | Link |
|---|---|
| CN (1) | CN218600457U (en) |
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2022
- 2022-12-08 CN CN202223288158.2U patent/CN218600457U/en active Active
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