CN215725624U - Blind hole depth auxiliary detection tool - Google Patents
Blind hole depth auxiliary detection tool Download PDFInfo
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- CN215725624U CN215725624U CN202121505954.XU CN202121505954U CN215725624U CN 215725624 U CN215725624 U CN 215725624U CN 202121505954 U CN202121505954 U CN 202121505954U CN 215725624 U CN215725624 U CN 215725624U
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- positioning body
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- blind hole
- auxiliary measuring
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Abstract
The utility model discloses a blind hole depth auxiliary detection tool which comprises a positioning body and an auxiliary measuring rod; the upper end surface and the lower end surface of the positioning body are mutually parallel positioning planes, and the middle part of the positioning body is vertically provided with a guide hole which penetrates up and down; the upper end of the auxiliary measuring rod is a guide head with the appearance matched with the inner shape of a guide hole in the middle of the positioning body, the lower end of the auxiliary measuring rod is a measuring head with a thin rod-shaped structure, and the end part of the lower end of the measuring head is of a pointed structure; the auxiliary measuring rod is connected in a guide hole in the middle of the positioning body in a sliding mode through a guide head at the upper end of the auxiliary measuring rod. The auxiliary detection tool can accurately measure the depth of the bottom surface non-planar blind hole.
Description
Technical Field
The utility model relates to a blind hole depth auxiliary detection tool, and belongs to the field of product quality detection.
Background
The blind hole structure is one of the main indexes of important composition structures in the assembly of products with blind hole structures, and whether products with accurate blind hole sizes can be reliably assembled. The depth of the blind hole is measured by a depth gauge in the traditional process, a measuring rod of the traditional depth gauge is made of a strip-shaped structure with a certain width, and the front end face of the measuring rod is used as a positioning face, so that the blind hole with the aperture smaller than the width of the measuring rod and the bottom plane can be measured. For some blind holes with non-planar bottom surfaces, such as conical holes, hemispherical blind holes and the like, the measuring rod of the depth gauge cannot extend into the bottommost part of the blind holes, so that the accurate depth of the blind holes cannot be measured. In the prior art, when a blind hole with a non-planar bottom surface is measured, only a gauge matched with the internal tolerance of the blind hole can be used for measuring, so that a corresponding gauge needs to be processed for each blind hole to be measured, and the manufacturing cost of the gauge is increased; in addition, due to frequent measurement, the gauge is worn, regular verification is needed, and after the wear tolerance is exceeded, a new gauge must be replaced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the depth of a bottom surface non-planar blind hole cannot be accurately measured by a traditional depth gauge and the measurement cost is high by using a gauge mode, and provides a device capable of measuring the depth of the bottom surface non-planar blind hole.
The purpose of the utility model is realized by the following technical scheme:
the utility model discloses a blind hole depth auxiliary detection tool which comprises a positioning body and an auxiliary measuring rod;
the upper end surface and the lower end surface of the positioning body are mutually parallel positioning planes, and the middle part of the positioning body is vertically provided with a guide hole which penetrates up and down;
the upper end of the auxiliary measuring rod is a guide head with the appearance matched with the inner shape of a guide hole in the middle of the positioning body, the lower end of the auxiliary measuring rod is a measuring head with a thin rod-shaped structure, and the end part of the lower end of the measuring head is of a pointed structure;
the auxiliary measuring rod is connected in a guide hole in the middle of the positioning body in a sliding mode through a guide head at the upper end of the auxiliary measuring rod.
The lower port part of the positioning body guide hole is provided with an annular limiting table extending inwards, and the auxiliary measuring rod is limited downwards through the annular limiting table.
Working process
Before measurement, the positioning body is placed on the positioning plate with the plane upper surface, the positioning frame of the depth gauge is supported and positioned on the upper end surface of the positioning body, the measuring rod of the depth gauge is inserted into the guide hole of the positioning body, the front end of the measuring rod of the depth gauge is enabled to be tightly attached to the upper end surface of the guide head of the auxiliary measuring rod, and the reading of the extending length of the depth gauge at the moment is marked as a measurement zero position.
When measuring the blind hole with the bottom surface being non-planar, firstly placing the positioning body on the upper surface of the blind hole part to be measured, and aligning the guide hole of the positioning body with the blind hole of the blind hole part to be measured; at the moment, the auxiliary measuring rod slides into the blind hole to be measured under the action of gravity, so that the measuring head of the auxiliary measuring rod extends into the bottommost end of the blind hole to be measured; controlling the measuring rod of the depth gauge to extend downwards again, enabling the front end of the measuring rod of the depth gauge to be attached to the upper end face of the guide head of the auxiliary measuring rod again, and recording the reading of the secondary extension length of the depth gauge; and the difference value of the reading of the secondary extension length and the reading of the measurement zero position is the depth of the blind hole to be measured.
Advantageous effects
The auxiliary detection tool is simple in structure and convenient to process, special gauges do not need to be manufactured for different blind holes, detection cost is reduced, and detection efficiency and detection reliability are improved. The auxiliary detection tool can accurately measure the depth of the bottom surface non-planar blind hole; under the condition that the auxiliary measuring rod is abraded, the auxiliary measuring rod can be corrected by adjusting the measuring zero position, and the service life of the auxiliary detecting tool is prolonged.
Drawings
FIG. 1 is a schematic structural view of the auxiliary detection tool of the present invention during zero position adjustment and measurement;
FIG. 2 is a structural diagram of the auxiliary detection tool of the present invention illustrating the measurement status;
in the figure, 1-depth gauge; 2-a positioning body; 3-auxiliary measuring rod.
Detailed Description
The utility model is further described with reference to the following figures and examples.
Examples
The utility model discloses a blind hole depth auxiliary detection tool which comprises a positioning body 2 and an auxiliary measuring rod 3;
the upper end surface and the lower end surface of the positioning body 2 are mutually parallel positioning planes, and a guide hole which penetrates through the positioning body 2 vertically is formed in the middle of the positioning body 2;
the upper end of the auxiliary measuring rod 3 is a guide head with the shape matched with the shape in a guide hole in the middle of the positioning body 2, the lower end of the auxiliary measuring rod 3 is a measuring head with a thin rod-shaped structure, and the end part of the lower end of the measuring head is of a pointed structure;
the auxiliary measuring rod 3 is connected in a guide hole in the middle of the positioning body 2 in a sliding mode through a guide head at the upper end of the auxiliary measuring rod.
The lower port part of the guide hole of the positioning body 2 is provided with an annular limiting table extending inwards, and the auxiliary measuring rod 3 is limited downwards through the annular limiting table.
FIG. 1 is a schematic structural view of the auxiliary detection tool of the present invention during zero position adjustment and measurement;
before measurement, the positioning body 2 is placed on a positioning plate with a plane upper surface, the positioning frame of the depth gauge 1 is supported and positioned on the upper end surface of the positioning body 2, the measuring rod of the depth gauge 1 is inserted into the guide hole of the positioning body 2, the front end of the measuring rod of the depth gauge 1 is enabled to be tightly attached to the upper end surface of the guide head of the auxiliary measuring rod 3, and the reading of the extending length of the depth gauge 1 at the moment is marked as a measurement zero position.
FIG. 2 is a structural diagram of the auxiliary detection tool of the present invention illustrating the measurement status;
when measuring the blind hole with the bottom surface being non-planar, firstly, the positioning body 2 is placed on the upper surface of the blind hole part to be measured, so that the guide hole of the positioning body 2 is aligned with the blind hole of the blind hole part to be measured; at the moment, the auxiliary measuring rod 3 slides into the blind hole to be measured under the action of gravity, so that the measuring head of the auxiliary measuring rod 3 extends into the bottommost end of the blind hole to be measured; controlling the measuring rod of the depth gauge 1 to extend downwards again, enabling the front end of the measuring rod of the depth gauge 1 to be attached to the upper end face of the guide head of the auxiliary measuring rod 3 again, and recording the reading of the secondary extension length of the depth gauge 1; and the difference value of the reading of the secondary extension length and the reading of the measurement zero position is the depth of the blind hole to be measured.
Claims (2)
1. The utility model provides a blind hole degree of depth auxiliary detection frock, characterized by: comprises a positioning body and an auxiliary measuring rod;
the upper end surface and the lower end surface of the positioning body are mutually parallel positioning planes, and the middle part of the positioning body is vertically provided with a guide hole which penetrates up and down;
the upper end of the auxiliary measuring rod is a guide head with the appearance matched with the inner shape of a guide hole in the middle of the positioning body, the lower end of the auxiliary measuring rod is a measuring head with a thin rod-shaped structure, and the end part of the lower end of the measuring head is of a pointed structure;
the auxiliary measuring rod is connected in a guide hole in the middle of the positioning body in a sliding mode through a guide head at the upper end of the auxiliary measuring rod.
2. The blind hole depth auxiliary detection tool of claim 1, which is characterized in that: the lower port part of the positioning body guide hole is provided with an annular limiting table extending inwards, and the auxiliary measuring rod is limited downwards through the annular limiting table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121505954.XU CN215725624U (en) | 2021-06-29 | 2021-06-29 | Blind hole depth auxiliary detection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121505954.XU CN215725624U (en) | 2021-06-29 | 2021-06-29 | Blind hole depth auxiliary detection tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215725624U true CN215725624U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121505954.XU Active CN215725624U (en) | 2021-06-29 | 2021-06-29 | Blind hole depth auxiliary detection tool |
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| CN (1) | CN215725624U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674207A (en) * | 2022-04-28 | 2022-06-28 | 马鞍山钢铁股份有限公司 | Bottom surface flatness measuring device and method for flat-bottom blind hole |
-
2021
- 2021-06-29 CN CN202121505954.XU patent/CN215725624U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674207A (en) * | 2022-04-28 | 2022-06-28 | 马鞍山钢铁股份有限公司 | Bottom surface flatness measuring device and method for flat-bottom blind hole |
| CN114674207B (en) * | 2022-04-28 | 2024-04-12 | 马鞍山钢铁股份有限公司 | Bottom surface flatness measuring device and method for flat-bottom blind hole |
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