CN218120817U - Device for detecting effective length of thread of threaded hole - Google Patents
Device for detecting effective length of thread of threaded hole Download PDFInfo
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- CN218120817U CN218120817U CN202221351772.6U CN202221351772U CN218120817U CN 218120817 U CN218120817 U CN 218120817U CN 202221351772 U CN202221351772 U CN 202221351772U CN 218120817 U CN218120817 U CN 218120817U
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- measuring cylinder
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Abstract
The utility model discloses a thread effective length detection device, which comprises a positioning plate, a measuring cylinder, a thread sample column, a positioning rod, a calibration plate and a measuring scale; the positioning plate is a plate-shaped part with a through hole in the center, and the upper surface and the lower surface of the positioning plate are both positioning planes; the measuring cylinder is a cylindrical part with an opening at one end, a guide hole is formed in the center of the end with the bottom of the measuring cylinder, and a visual observation window is formed in the side wall of the measuring cylinder; one end of the opening of the measuring cylinder is fixed on the upper plate surface of the positioning plate, and a measuring scale is fixed in the inner cavity of the measuring cylinder; the thread sample column is arranged in the inner cavity of the measuring cylinder, the upper end of the thread sample column is vertically fixed with the positioning rod, the side wall of the middle part of the positioning rod is vertically fixed with the positioning disc, and the upper end of the positioning rod penetrates through the guide hole at the bottom end of the measuring cylinder; when the lower extreme of screw thread appearance post is leveled with the lower surface of locating plate, the zero scale of calibration plate and dipperstick flushes. The utility model discloses a detection device can accurately detect the effective length of screw thread of the work piece screw hole of being surveyed, has guaranteed the smooth assembly of work piece.
Description
Technical Field
The utility model relates to a device for detecting effective length of screw hole screw thread belongs to detection area.
Background
The accurate measurement of the effective length of the thread can ensure that the workpiece can be locked, and the product performance is ensured. If the effective length of the thread is less than the requirement, the workpiece is not assembled in place and cannot be effectively fixed. If the effective length of the thread is higher than the requirement, the thread is too long, and the potential safety hazard is easily caused. At present, no effective means is available for detecting the effective length of the thread. In order to ensure accurate measurement of the effective length of the thread, the detection device needs to be designed to directly measure the effective length.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a screw thread effective length detection device.
The utility model aims at realizing through the following technical scheme:
the utility model discloses a thread effective length detection device, which comprises a positioning plate, a measuring cylinder, a thread sample column, a positioning rod, a calibration disc, a measuring scale and a hand wheel;
the positioning plate is a plate-shaped part with a through hole in the center, the diameter of the through hole in the center of the positioning plate is larger than that of the thread sample column, and the upper surface and the lower surface of the positioning plate are both positioning planes;
the measuring cylinder is a cylindrical part with an opening at one end, a guide hole matched with the diameter of the positioning rod is formed in the center of the end, with the bottom, of the measuring cylinder, and a visual observation window is formed in the side wall of the measuring cylinder;
one end of the opening of the measuring cylinder is fixed on the upper plate surface of the positioning plate, and the guide hole at the end with the bottom of the measuring cylinder is coaxial with the central through hole of the positioning plate; a measuring scale with vertical scales is fixed in the inner cavity of the measuring cylinder; the thread sample column is arranged in the inner cavity of the measuring cylinder, the upper end of the thread sample column is vertically fixed with the positioning rod, the side wall of the middle part of the positioning rod is vertically fixed with the calibration disc, the upper end of the positioning rod penetrates through the guide hole at the bottom end of the measuring cylinder, and a hand wheel is fixed at the penetrating part of the positioning rod; when the lower end of the thread sample column is level with the lower surface of the positioning plate, the calibration plate is level with the zero scale of the measuring scale.
Working process
During measurement, the positioning plate of the detection device is placed on the upper surface of a workpiece to be measured, the hand wheel drives the thread sample column to be screwed into the threaded hole in the upper surface of the workpiece to be measured, and after the thread sample column cannot rotate continuously, the scale value of the calibration disc pointing to the measuring scale is observed, namely the effective length of the threaded hole of the workpiece to be measured.
Advantageous effects
The utility model discloses a detection device, simple structure, it is easy and simple to handle, it is quick to detect, and screw hole part screw hole internal thread effective length that screw thread appearance post complete screw in that awaits measuring that can be accurate has guaranteed the smooth assembly of work piece.
Drawings
FIG. 1 is a schematic structural view of the detecting device of the present invention;
in the figure, 1-positioning plate; 2-a measuring cylinder; 3-thread sample column; 4-positioning the rod; 5-calibrating the disc; 6-measuring the scale; 7-a hand wheel; 8-the workpiece to be measured.
Detailed Description
The invention will be further described with reference to the accompanying drawings and examples.
Examples
As shown in fig. 1, the device for detecting the effective length of the thread of the present invention comprises a positioning plate 1, a measuring cylinder 2, a thread sample column 3, a positioning rod 4, a calibration plate 5, a measuring scale 6 and a hand wheel 7;
the positioning plate 1 is a plate-shaped part with a through hole in the center, the diameter of the through hole in the center of the positioning plate 1 is larger than that of the thread sample column, and the upper surface and the lower surface of the positioning plate 1 are both positioning planes;
the measuring cylinder 2 is a cylindrical part with an opening at one end, a guide hole matched with the diameter of the positioning rod 4 is formed in the center of the bottom end of the measuring cylinder 2, and a visible observation window is formed in the side wall of the measuring cylinder 2;
one end of the opening of the measuring cylinder 2 is fixed on the upper plate surface of the positioning plate 1, and a guide hole at one end of the measuring cylinder 2 with the bottom is coaxial with a central through hole of the positioning plate 1; a measuring scale 6 with vertical scales is fixed in the inner cavity of the measuring cylinder 2; the thread sample column 3 is arranged in the inner cavity of the measuring cylinder 2, the upper end of the thread sample column 3 is vertically fixed with the positioning rod 4, the side wall of the middle part of the positioning rod 4 is vertically fixed with the calibration disc 5, the upper end of the positioning rod 4 passes through the guiding hole at the bottom end of the measuring cylinder 2, and a part of the positioning rod 4 passes through the fixed hand wheel 7; when the lower end of the thread sample column 3 is level with the lower surface of the positioning plate 1, the calibration plate 5 is level with the zero scale of the measuring scale 6.
Working process
During measurement, the positioning plate 1 of the detection device is placed on the upper surface of a measured workpiece 8, the hand wheel 7 drives the thread sample column 3 to be screwed into a threaded hole in the upper surface of the measured workpiece 8, and after the thread sample column 3 cannot continuously rotate, the calibration plate 5 points to the scale interval on the measuring scale 6, namely, the effective length of the threaded hole of the measured workpiece 8 is observed.
Claims (1)
1. A screw thread effective length detection device is characterized in that: the device comprises a positioning plate, a measuring cylinder, a thread sample column, a positioning rod, a calibration disc, a measuring scale and a hand wheel;
the positioning plate is a plate-shaped part with a through hole in the center, the diameter of the through hole in the center of the positioning plate is larger than that of the thread-like column, and the upper surface and the lower surface of the positioning plate are both positioning planes;
the measuring cylinder is a cylindrical part with an opening at one end, a guide hole matched with the diameter of the positioning rod is formed in the center of the end with the bottom of the measuring cylinder, and a visual observation window is formed in the side wall of the measuring cylinder;
one end of the opening of the measuring cylinder is fixed on the upper plate surface of the positioning plate, and the guide hole at the end with the bottom of the measuring cylinder is coaxial with the central through hole of the positioning plate; a measuring scale with vertical scales is fixed in the inner cavity of the measuring cylinder; the thread sample column is arranged in the inner cavity of the measuring cylinder, the upper end of the thread sample column is vertically fixed with the positioning rod, the side wall of the middle part of the positioning rod is vertically fixed with the calibration disc, the upper end of the positioning rod penetrates through the guide hole at the bottom end of the measuring cylinder, and a hand wheel is fixed at the penetrating part of the positioning rod; when the lower end of the thread sample column is level with the lower surface of the positioning plate, the calibration plate is flush with the zero scale of the measuring scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221351772.6U CN218120817U (en) | 2022-05-30 | 2022-05-30 | Device for detecting effective length of thread of threaded hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221351772.6U CN218120817U (en) | 2022-05-30 | 2022-05-30 | Device for detecting effective length of thread of threaded hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218120817U true CN218120817U (en) | 2022-12-23 |
Family
ID=84498346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221351772.6U Active CN218120817U (en) | 2022-05-30 | 2022-05-30 | Device for detecting effective length of thread of threaded hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218120817U (en) |
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2022
- 2022-05-30 CN CN202221351772.6U patent/CN218120817U/en active Active
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