CN210952638U - Internal thread pitch diameter detection device - Google Patents
Internal thread pitch diameter detection device Download PDFInfo
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- CN210952638U CN210952638U CN201921999145.1U CN201921999145U CN210952638U CN 210952638 U CN210952638 U CN 210952638U CN 201921999145 U CN201921999145 U CN 201921999145U CN 210952638 U CN210952638 U CN 210952638U
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- micrometer
- internal thread
- pitch diameter
- detection device
- seat body
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Abstract
The utility model discloses an internal thread pitch diameter detection device has: a micrometer; the micrometer anvil measuring rod is arranged on the micrometer; the first end of the seat body is connected with the micrometer anvil rod; the ball is connected with the second end of pedestal, and the ball can contact with the internal thread tooth, can accurately conveniently detect the internal thread pitch diameter.
Description
Technical Field
The utility model belongs to the technical field of automobile parts makes, especially, relate to an internal thread pitch diameter detection device.
Background
In realizing the utility model discloses an in-process, utility model human finds that prior art has following problem at least:
in the machining fields of automobile parts, mold manufacturing, mechanical transmission and the like, a measurement problem is not solved, and the detection of the pitch diameter of the related internal thread is a difficult problem. Because the pitch diameter of the internal thread is not easy or can not be directly measured, certain difficulty is brought to processing and detection in actual production.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a can accurate conveniently detect internal thread pitch diameter detection device of internal thread pitch diameter is provided.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: an internal thread pitch diameter detection device is provided with:
a micrometer;
the micrometer anvil measuring rod is arranged on the micrometer section;
the first end of the seat body is connected with the micrometer anvil rod;
the ball is connected with the second end of the seat body and can be contacted with the thread of the internal thread;
from geometric analysis, it is found that S ═ D (in D-D)/2 + a, i.e., D +2a-2S in D, a ═ a-D/2+ D/2 × 1/sin (α/2) -1/4 × t ctg (α/2), and the pitch diameter D of the threadInThe diameter of the workpiece is D, the height of the measuring seat is A, the distance from the end face of the seat body to the outer diameter of the workpiece to be measured is S, the diameter of the steel ball is D, the pitch diameter of the thread is D, the pitch is t, the thread profile angle is α, and the distance from the end face of the measuring seat to the pitch diameter of the thread is a.
The micrometer caliper further comprises a guide sleeve, wherein the first end of the guide sleeve is connected with the micrometer anvil rod, and the second end of the guide sleeve is connected with the first end of the seat body.
And the inner hole of the guide sleeve is in clearance fit with the measuring anvil rod of the micrometer.
The seat body is arranged at the hole bottom of the inner hole of the guide sleeve; the micrometer anvil rod is contacted with the seat body.
One of the technical scheme has the following advantages or beneficial effects, and the internal thread pitch diameter can be accurately and conveniently detected.
Drawings
Fig. 1 is a schematic structural view of an internal thread pitch diameter detection device provided in an embodiment of the present invention;
the labels in the above figures are: 1. the method comprises the following steps of machining a workpiece, 2, a micrometer, 3, a steel ball, 4, a seat body, 5, a guide sleeve, 6, a micrometer anvil measuring rod, D, the diameter of the workpiece, A, the height of a measuring seat, S, the distance from the end face of the seat body to the outer diameter of the workpiece 1, and machining the workpieceSeparation, d, Steel ball diameter, dInThe pitch, t, the pitch, α, the thread profile angle, a, and the distance from the end face of the measuring seat to the pitch diameter.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, an internal thread pitch diameter detection device includes:
a micrometer;
the micrometer anvil measuring rod is arranged on the micrometer;
the first end of the seat body is connected with the micrometer anvil rod;
the ball is connected with the second end of the seat body and can be contacted with the thread of the internal thread.
The first end of the guide sleeve is connected with the measuring anvil rod of the micrometer, and the second end of the guide sleeve is connected with the first end of the seat body.
The inner hole of the guide sleeve is in clearance fit with the measuring anvil rod of the micrometer.
The seat body is arranged at the hole bottom of the inner hole of the guide sleeve; the anvil measuring rod of the micrometer contacts with the seat body.
On the basis of a common micrometer, a special measuring seat and a guide sleeve are added for use. The measuring seat is formed by welding steel balls and a seat body, and the inner hole of the guide sleeve is in high-precision clearance fit with the measuring anvil rod of the micrometer. The detection device has the advantages of simple structure, convenient use and accurate measurement.
The inner hole of the guide sleeve is in clearance fit with the measuring anvil rod of the micrometer in high precision, and a measuring seat (formed by welding a steel ball and a seat body) is arranged on the guide sleeve. Calculated by geometric analysis, S ═ D (D-D)In) 2+ a, i.e. dInD +2a-2S, and a-A-D/2 + D/2 x 1/sin (α/2) -1/4 x t ctg (α/2), because the height A of the measuring seat, the diameter D of the steel ball and the thread form angle α are all constants, a is also a constant value, and the diameter D of the workpiece is also a constant value, namely the diameter D of the middle thread changes only with S, therefore, the size S from the end surface of the seat body 4 to the outer diameter of the workpiece 1 can be detected by a micrometer in the machining process, and the change in the diameter D of the middle thread can be detected at any timeBit and therefore, the measurement accuracy is high.
After adopting foretell structure, can accurate convenient internal thread pitch diameter that detects.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (4)
1. An internal thread pitch diameter detection device is characterized by comprising:
a micrometer;
the micrometer anvil measuring rod is arranged on the micrometer section;
the first end of the seat body is connected with the micrometer anvil rod;
the ball is connected with the second end of the seat body and can be in contact with the thread of the internal thread.
2. The internal thread pitch diameter detection device of claim 1, further comprising a guide sleeve, wherein a first end of the guide sleeve is connected with the micrometer anvil rod, and a second end of the guide sleeve is connected with the first end of the seat body.
3. The internal thread pitch diameter detection device of claim 2, wherein the guide sleeve inner hole is in clearance fit with the micrometer anvil rod.
4. The internal thread pitch diameter detection device of claim 3, wherein the seat body is arranged at the bottom of the inner hole of the guide sleeve; the micrometer anvil rod is contacted with the seat body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921999145.1U CN210952638U (en) | 2019-11-19 | 2019-11-19 | Internal thread pitch diameter detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921999145.1U CN210952638U (en) | 2019-11-19 | 2019-11-19 | Internal thread pitch diameter detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210952638U true CN210952638U (en) | 2020-07-07 |
Family
ID=71374697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921999145.1U Active CN210952638U (en) | 2019-11-19 | 2019-11-19 | Internal thread pitch diameter detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210952638U (en) |
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2019
- 2019-11-19 CN CN201921999145.1U patent/CN210952638U/en active Active
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