CN216159797U - Spring depth gauge measuring device - Google Patents
Spring depth gauge measuring device Download PDFInfo
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- CN216159797U CN216159797U CN202122281136.2U CN202122281136U CN216159797U CN 216159797 U CN216159797 U CN 216159797U CN 202122281136 U CN202122281136 U CN 202122281136U CN 216159797 U CN216159797 U CN 216159797U
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Abstract
The utility model discloses a spring depth gauge measuring device, which comprises a measuring body and a measuring rod movably assembled in the measuring body, wherein the measuring rod is connected with the measuring body through a connecting rod; the lower end of the measuring body is provided with a through groove in the radial direction, the through groove penetrates through the lower end face of the measuring body, and a measuring block is assembled in the through groove; the measuring body is internally provided with a control spring, the control spring is connected with the measuring rod, and the lower end of the measuring rod is positioned in the through groove when external force is not applied. The utility model solves the problem that the spring depth gauge cannot measure the size in the body cavity, converts the spring depth gauge into the external size of the cavity, realizes the conversion of indirect measurement into visual direct measurement in the measuring process, has simple and quick measuring method, can realize the measuring and testing precision of 0.01mm, and can realize the measuring and popularization of similar measuring tools.
Description
Technical Field
The utility model belongs to the field of mechanical product detection, and particularly relates to a spring depth gauge measuring device.
Background
The spring type depth gauge controls the upper limiting device and the lower limiting device of the measuring rod through the inner spring, is widely applied to mechanical product detection, is a typical inspection measuring tool, and has strict tolerance requirements on the spring type depth gauge. In the detection process, the measurement positions of some gauge measuring rods are special and direct measurement cannot be realized, or the existing technical means cannot meet the measurement requirements.
The depth gauge is characterized in that the measuring position of the measuring rod is in the measuring body in a free state, and the measuring rod is controlled to stretch by a spring and can be fastened by a locking screw in the using process. For some measuring tools, the measuring surface at one end of the measuring body and the reference surface at one end of the movable measuring rod are required to be completely in the same plane, and then the height difference between the top end of the cone at the other end of the movable measuring rod and the reference surface at the other end of the measuring body is measured. During measurement, the tiny axial transmission is caused in the locking process of the screw, the end face of one side of the screw cannot be ensured to be on the same section, and subsequent measurement cannot be smoothly realized.
Another conventional measurement method is to simulate the shape of the body cavity by means of a proofing paste, and measure the shape size, the position of the conical tip at the other end of the movable measuring rod and the size of the body by using a universal tool microscope. The axial movement of the movable measuring body can also occur during the proofing paste, the measuring result is directly influenced, and the measuring precision can not be ensured.
Disclosure of Invention
The utility model aims to provide a measuring device of a spring depth gauge, which is used for carrying out tolerance detection on the spring depth gauge and solving the problems that the measurement is difficult and the precision cannot be ensured in the traditional method.
In order to realize the task, the utility model adopts the following technical scheme:
a spring depth gauge measuring device comprises a measuring body and a measuring rod movably assembled in the measuring body;
the lower end of the measuring body is provided with a through groove in the radial direction, the through groove penetrates through the lower end face of the measuring body, and a measuring block is assembled in the through groove;
the measuring body is internally provided with a control spring, the control spring is connected with the measuring rod, and the lower end of the measuring rod is positioned in the through groove when external force is not applied.
Further, the measuring body comprises a measuring section and an assembling section;
a spring cavity is axially arranged in the measuring section, an assembling groove is axially arranged in the assembling section, the lower end of the spring cavity is communicated with the assembling groove, and the lower end of the measuring rod penetrates through a communicating hole at the end part of the assembling groove and extends into the through groove; a measuring hole leading to the spring cavity is formed in the upper end face of the measuring body; the measuring rod is arranged in the assembling groove and the spring cavity.
Furthermore, the measuring rod is sequentially provided with a first cylindrical section, a second cylindrical section and a third cylindrical section from top to bottom, wherein a limiting step is arranged between the first cylindrical section and the second cylindrical section, the limiting step is assembled in the spring cavity, and the control spring is arranged between the limiting step and the upper end of the spring cavity.
Further, the first cylindrical section penetrates through the measuring hole, the second cylindrical section is assembled in the assembling groove, the third cylindrical section penetrates through the communicating hole, and the end part of the third cylindrical section is in a conical structure.
Further, the diameter of the second cylindrical section is larger than the diameter of the first cylindrical section and the diameter of the third cylindrical section.
Furthermore, the gauge block is of a rectangular structure, the width of the through groove is matched with that of the gauge block, and the height of the through groove is not less than that of the gauge block.
Furthermore, a detection surface is processed at the upper end of the measuring body, and the detection surface is parallel to the upper end surface of the measuring body.
Compared with the prior art, the utility model has the following technical characteristics:
the measuring device realizes the direct measurement of the measuring tool by the platform technology, and the measuring method is simple and quick through demonstration, the measuring test precision can reach 0.01mm, and the measuring popularization of the similar measuring tools can be realized; the utility model can be manufactured by utilizing waste gauge blocks, and has simple design and manufacturing process, low cost and easy storage; the utility model realizes direct measurement by means of the auxiliary measuring tool, and the measuring method is simple and visual; converting the internal measurement size of the gauge into an external measurement size which is closer to the actual working state; converting the static measurement of the spring into a compressed steady-state measurement; the measurement accuracy is high, the single-piece measurement time is changed from 4 hours to 2 hours, and the measurement efficiency is improved by 50%.
Drawings
FIG. 1 is an axial cross-sectional schematic view of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a front view of a gauge block;
fig. 4 is a side view of the gauge block.
The reference numbers in the figures illustrate: 1 volume, 2 graduated rods, 3 measuring sections, 4 assembly sections, 5 through grooves, 6 gauge blocks, 7 spring cavities, 8 assembly grooves, 9 intercommunicating holes, 10 gauge holes, 11 control springs, 12 first cylindrical sections, 13 limiting steps, 14 second cylindrical sections, 15 third cylindrical sections and 16 detection surfaces.
Detailed Description
Referring to fig. 1 to 4, the utility model provides a measuring device of a spring depth gauge, which is used for solving the problem that the inner dimension of a spring depth gauge measuring body 1 cannot be measured, converting the inner dimension into the outer dimension of a cavity, and converting the indirect measurement into the direct measurement in the measuring process. According to the requirements and the structural characteristics of the gauge, the gauge is detected by matching with the waste gauge block 6 with a proper specification through design and processing.
The utility model has the characteristics of simple and visual measurement method, low measurement cost and high measurement accuracy.
As shown in fig. 1 and 2, a spring depth gauge measuring device of the present invention includes a measuring body 1 and a measuring rod 2 movably fitted in the measuring body 1; the lower end of the measuring body 1 is provided with a through groove 5 in the radial direction, the through groove 5 penetrates through the lower end face of the measuring body 1, and a measuring block 6 is assembled in the through groove 5; the measuring body 1 is internally provided with a control spring 11, the control spring 11 is connected with the measuring rod 2, and the lower end of the measuring rod 2 is positioned in the through groove 5 when external force is not applied.
Specifically, the measuring body 1 comprises a measuring section 3 and an assembling section 4, both of which are cylindrical structures, wherein the outer diameter of the measuring section 3 is larger than that of the assembling section 4; the measuring section 3 is axially provided with a spring cavity 7, the assembling section 4 is axially provided with an assembling groove 8, the lower end of the spring cavity 7 is communicated with the assembling groove 8, and the lower end of the measuring rod 2 passes through a communicating hole 9 at the end part of the assembling groove 8 and extends into the through groove 5 under the condition of no external force; a measuring hole 10 leading to the spring cavity 7 is arranged on the upper end surface of the measuring body 1; the metering rod 2 is arranged in the assembly groove 8 and the spring cavity 7.
As shown in fig. 1, the measuring rod 2 is sequentially provided with a first cylindrical section 12, a second cylindrical section 14 and a third cylindrical section 15 from top to bottom, wherein a limiting step 13 is arranged between the first cylindrical section 12 and the second cylindrical section 14, and the limiting step 13 is assembled in the spring cavity 7 and is used for limiting the axial movement range of the whole two sections; the control spring 11 is arranged between the limiting step 13 and the upper end of the spring cavity 7, and the control spring 11 is used for resetting under the condition that the measuring rod 2 is not subjected to external force.
Specifically, a first cylindrical section 12 passes through the measuring hole 10, a second cylindrical section 14 is assembled in the assembling groove 8, a third cylindrical section 15 passes through the communicating hole 9, and the end part of the third cylindrical section 15 is in a conical structure; referring to fig. 1, when testing is performed, the cone at the front end of the third cylindrical section 15 extends into the through slot 5 to contact with the gauge block 6. For ease of assembly, the diameter of the second cylindrical section 14 is greater than the diameter of the first cylindrical section 12 and the diameter of the third cylindrical section 15.
Referring to fig. 3 and 4, the gauge block 6 is of a rectangular structure, and the width of the through slot 5 is matched with the width of the gauge block 6 and is equal to or slightly greater than the width of the gauge block 6; the height of the through groove 5 is not less than that of the gauge blocks 6, so that gauge blocks 6 with different heights can be selected for detection according to actual conditions. Gauge blocks 6 are made by a grinding process, which can ensure dimensional accuracy.
As shown in fig. 1, a detection surface 16 is machined at the upper end of the measuring body 1, and the detection surface 16 is parallel to the upper end surface of the measuring body 1, that is, in the axial direction, the detection surface 16 and the upper end surface have a height difference so as to facilitate tolerance measurement.
The working principle of the utility model is as follows:
as shown in fig. 1, the metering rod inside the metering body is controlled by the control spring, and the metering rod is located inside the metering body in a free state. When the gauge is detected, the distance from the conical vertex position of the measuring rod to the lower end face of the measuring rod is measured under the condition that the upper end face of the measuring body and the upper end of the measuring rod are coplanar.
Firstly, measuring an actual value of the gauge block by using a lever micrometer to verify whether the actual value is consistent with a theoretical value or not, and recording; then the gauge block is placed on the platform, the gauge to be detected is used for inserting the gauge block into the through groove of the gauge body from top to bottom, at the moment, the conical structure at the end part of the gauge rod is contacted with the gauge body, the gauge body is continuously pressed downwards, the gauge rod overcomes the elasticity of the control spring and starts to move upwards under the action of the gauge block until the lower end face of the gauge body is fully contacted with the surface of the platform, and at the moment, the state is shown in fig. 1 and fig. 2; during the pressing process, the upper end of the measuring rod is ejected out of the measuring hole and is positioned between the upper end surface of the measuring body and the detection surface. At the moment, the upper end surface or the detection surface of the measuring body can be used as a reference surface to measure the position of the upper end of the measuring rod; whether the gauge is qualified or not is judged by comparing whether the detection result is within the tolerance range or not for multiple times.
In the scheme, the gauge block with the measured size is introduced, the equivalent block is placed in the through groove at the end part of the gauge body, and the upper end of the gauge rod and the upper end of the gauge body are within a set tolerance range (for example, five thousandths), so that the gauge is qualified, and the calibration process is quickly and conveniently realized.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equally replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application, and are intended to be included within the scope of the present application.
Claims (7)
1. A spring depth gauge measuring device, includes volume (1) and movable gauge rod (2) of assembling in volume (1), its characterized in that:
the lower end of the measuring body (1) is provided with a through groove (5) in the radial direction, the through groove (5) penetrates through the lower end face of the measuring body (1), and a measuring block (6) is assembled in the through groove (5);
the measuring body (1) is internally provided with a control spring (11), the control spring (11) is connected with the measuring rod (2), and the lower end of the measuring rod (2) is positioned in the through groove (5) when external force is not applied.
2. The spring depth gauge measuring device of claim 1, wherein the gauge body (1) comprises a measuring section (3) and a fitting section (4);
a spring cavity (7) is axially formed in the measuring section (3), an assembling groove (8) is axially formed in the assembling section (4), the lower end of the spring cavity (7) is communicated with the assembling groove (8), and the lower end of the measuring rod (2) penetrates through a communicating hole (9) in the end part of the assembling groove (8) and extends into the through groove (5); a measuring hole (10) leading to the spring cavity (7) is formed in the upper end face of the measuring body (1); the measuring rod (2) is arranged in the assembling groove (8) and the spring cavity (7).
3. The spring depth gauge measuring device of claim 2, wherein the measuring rod (2) comprises a first cylindrical section (12), a second cylindrical section (14) and a third cylindrical section (15) from top to bottom in sequence, wherein a limiting step (13) is arranged between the first cylindrical section (12) and the second cylindrical section (14), the limiting step (13) is assembled in the spring cavity (7), and the control spring (11) is arranged between the limiting step (13) and the upper end of the spring cavity (7).
4. A spring depth gauge measuring device according to claim 3, wherein a first cylindrical section (12) passes through the measuring hole (10), a second cylindrical section (14) is fitted in the fitting groove (8), a third cylindrical section (15) passes through the communication hole (9), and the end of the third cylindrical section (15) is of a conical configuration.
5. A spring depth gauge measuring device according to claim 3, wherein the diameter of the second cylindrical section (14) is larger than the diameter of the first cylindrical section (12) and the diameter of the third cylindrical section (15).
6. The spring depth gauge measuring device of claim 1, wherein the gauge block (6) is of a rectangular body structure, the width of the through groove (5) is matched with the width of the gauge block (6), and the height of the through groove (5) is not less than the height of the gauge block (6).
7. The spring depth gauge measuring device of claim 1, wherein the upper end of the gauge body (1) is machined with a detection surface (16), the detection surface (16) being parallel to the upper end surface of the gauge body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122281136.2U CN216159797U (en) | 2021-09-18 | 2021-09-18 | Spring depth gauge measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122281136.2U CN216159797U (en) | 2021-09-18 | 2021-09-18 | Spring depth gauge measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216159797U true CN216159797U (en) | 2022-04-01 |
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ID=80852758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122281136.2U Active CN216159797U (en) | 2021-09-18 | 2021-09-18 | Spring depth gauge measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216159797U (en) |
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2021
- 2021-09-18 CN CN202122281136.2U patent/CN216159797U/en active Active
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