CN223500312U - A three-needle measuring device - Google Patents
A three-needle measuring deviceInfo
- Publication number
- CN223500312U CN223500312U CN202422897057.8U CN202422897057U CN223500312U CN 223500312 U CN223500312 U CN 223500312U CN 202422897057 U CN202422897057 U CN 202422897057U CN 223500312 U CN223500312 U CN 223500312U
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- CN
- China
- Prior art keywords
- needle
- measuring
- flexible pad
- measuring device
- mounting hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model provides a three-needle measuring device which is used for measuring the pitch diameter of an external thread part and comprises a base, a first flexible pad, a screw plug, a screw sleeve, a three-needle positioning plate and three measuring needles; the upper part of the base is provided with a mounting hole along the vertical direction, a first flexible pad is mounted at the bottom of the mounting hole, a first internal thread is arranged in the mounting hole, a screw plug is provided with a first external thread matched with the first internal thread, the screw plug is mounted in the mounting hole, a screw sleeve is provided with a second internal thread, the upper part of the outer side wall of the base is provided with a second external thread matched with the second internal thread, a three-needle positioning plate is mounted at the upper end of the screw sleeve along the direction parallel to the first flexible pad, a plurality of fixing holes are formed in the three-needle positioning plate, a first through hole is formed in the first flexible pad, and the lower ends of three measuring needles sequentially penetrate through the fixing holes and the first through hole. The three-needle measuring device designed by the utility model can rapidly and conveniently complete the positioning of the positions of three measuring needles, and effectively solves the problem that the measuring needles are difficult to fix when measuring the pitch diameter of threads.
Description
Technical Field
The utility model belongs to the technical field of thread pitch diameter measurement, and particularly relates to a three-needle measuring device.
Background
Currently, pitch diameter measurements of externally threaded parts are typically measured by a threaded ring gauge or using three pins. For parts with pitch tolerance requirements, accurate pitch diameter values of threads cannot be obtained only through measurement of a threaded ring gauge, and error detection and missing detection caused by ring gauge abrasion are easy to occur when the threaded ring gauge detects a large number of parts, meanwhile, special threads in some special industries can be measured only by customizing the threaded ring gauge, but the cost of customizing the threaded ring gauge is high, and the period is long. The three-needle measuring method is a method for indirectly and simply measuring the pitch diameter, reduces measuring errors by adding measuring points, and is high in measuring accuracy, wide in application range and low in application cost.
At present, china patent with publication number of CN2771812Y discloses an auxiliary tool for three-needle measurement of worm distance, the device uses front and rear tips to support a worm, left and right clamping blocks are added on two sides of worm teeth, and three-needle holes are arranged on the clamping blocks for measurement, but the operation is complex, and the operation is labor-consuming. Another chinese patent with publication No. CN106124960a discloses a portable three-needle silicon material conductivity type measuring device which changes mechanical measurement into electrical signal measurement, but requires one hand to fix three needles simultaneously, one hand to fix parts, the operation is complicated, the operation is required to be mastered through a lot of exercises, and the measuring efficiency is low.
Disclosure of utility model
The utility model aims to solve the problems of complex operation, inaccurate positioning and low measurement efficiency of a three-needle measurement device in the prior art, and provides the three-needle measurement device.
In order to achieve the above purpose, the technical solution provided by the present utility model is:
A three-needle measuring device is used for measuring the thread pitch diameter of an external thread part and comprises a base, a first flexible pad, a screw plug, a screw sleeve, a three-needle locating plate and three measuring needles, wherein the upper portion of the base is provided with a mounting hole in the vertical direction, the first flexible pad is mounted at the bottom of the mounting hole, a first internal thread is arranged in the mounting hole, the screw plug is provided with a first external thread matched with the first internal thread and is mounted in the mounting hole and used for fixing the first flexible pad in the mounting hole, the screw sleeve is provided with a second internal thread, the upper portion of the outer side wall of the base is provided with a second external thread matched with the second internal thread, the three-needle locating plate is mounted at the upper end of the screw sleeve in the direction parallel to the first flexible pad and is provided with a plurality of fixing holes, the first flexible pad is provided with a first through hole, and the lower ends of the three measuring needles sequentially penetrate through the fixing holes and the first through holes.
Further, a second flexible pad is arranged at the upper end of the base, and a second groove for placing the second flexible pad is formed in the inner wall of the screw sleeve.
Further, two V-shaped blocks for placing the tested external thread parts are arranged at the edge of the upper end of the screw sleeve.
Further, the upper end of the screw sleeve is provided with a first groove for installing the three-needle locating plate.
Further, the fixing hole is in clearance fit with the measuring needle.
Further, the first flexible pad and the second flexible pad are both composite silicon rubber plates.
Further, the middle part of the base is provided with a clearance area for avoiding three measuring needles.
The utility model has the advantages that:
According to the three-needle measuring device, through the arranged three-needle locating plate, the first flexible pad, the base, the screw sleeve and other parts, the three measuring needles can be located quickly and conveniently, the problem that the measuring needles are difficult to fix when the pitch diameter of threads is measured is effectively solved, the measuring operation of the three-needle measuring device is simple and convenient, the measuring efficiency can be effectively improved, and the three-needle measuring device is simple and portable in structure.
Drawings
The features and advantages of the present utility model will become more readily understood from the following description with reference to the accompanying drawings, which are not drawn to scale, and some features are exaggerated or reduced to show details of particular components, in which:
FIG. 1 is a schematic diagram of a three-needle measuring device in an embodiment of the utility model;
FIG. 2 is a schematic diagram of a three-needle measurement device in a schematic cross-sectional view in accordance with an embodiment of the present utility model;
FIG. 3 is a top view of a three-needle measurement device in an embodiment of the utility model;
fig. 4 is an exploded view of a three-needle measuring device in an embodiment of the present utility model.
In the figure, the device comprises a 1-base, a 2-first flexible pad, a 3-screw plug, a 4-second flexible pad, a 5-screw sleeve, a 6-three-needle locating plate, a 7-measuring needle and an 8-part.
Detailed Description
The utility model will be described in detail below with the aid of exemplary embodiments of the utility model with reference to the accompanying drawings. It should be noted that the following detailed description of the present utility model is for illustrative purposes only and is not intended to be limiting.
A three-needle measuring device is used for measuring the thread pitch diameter of an external thread part 8 and comprises a base 1, a first flexible pad 2, a screw plug 3, a screw sleeve 5, a three-needle locating plate 6 and three measuring needles 7, wherein the upper portion of the base 1 is provided with a mounting hole in the vertical direction, the first flexible pad 2 is mounted at the bottom of the mounting hole, a first internal thread is arranged in the mounting hole, the screw plug 3 is provided with a first external thread matched with the first internal thread and is mounted in the mounting hole and used for fixing the first flexible pad 2 in the mounting hole, the screw sleeve 5 is provided with a second internal thread, the upper portion of the outer side wall of the base 1 is provided with a second external thread matched with the second internal thread, the upper end of the screw sleeve 5 is provided with a first groove used for mounting the three-needle locating plate 6, the three-needle locating plate 6 is mounted in the first groove in the direction parallel to the first flexible pad 2, the three-needle locating plate 6 is provided with a plurality of fixing holes, the first flexible pad 2 is provided with a first through hole, and the lower end of the three measuring needles 7 sequentially pass through the fixing holes and the first through holes. The fixing hole is in large clearance fit with the measuring needle 7.
As shown in fig. 2 and 4, a second flexible pad 4 is installed at the upper end of the base 1, and a second groove for placing the second flexible pad 4 is formed in the inner wall of the screw sleeve 5. The second flexible pad is added, so that each needle of the measuring needle 7 can be positioned at two points, and each needle of the measuring needle 7 is not easy to incline. Wherein, the first flexible pad 2 and the second flexible pad 4 are both composite silicon rubber plates. The first flexible pad 2 and the second flexible pad 4 can be provided with holes for the measuring needle 7 to pass through, the measuring needle is suitable for measuring the pitch of the external threads of one batch of parts 8 with the same specification, measuring the other batch of parts 8 with other specifications, and replacing the first flexible pad 2 and the second flexible pad 4, and the first flexible pad 2 and the second flexible pad 4 can be used without special holes and only need to penetrate the first flexible pad 2 and the second flexible pad 4 with force.
As shown in fig. 1, two V-shaped blocks for placing the external screw thread part 8 to be measured are provided at the upper end edge of the screw sleeve 5. The V-shaped block not only can play a role in supporting the measured part 8, but also can enable the part 8 to automatically realize automatic alignment of the axis of the measured part 8.
As shown in fig. 2, a clearance area for avoiding three measuring needles 7 is arranged in the middle of the base 1. So that three measuring pins 7 can penetrate the first flexible pad 2.
According to the requirement of measuring the size of the screw thread, selecting corresponding hole sites on the three-needle positioning plate 6, penetrating the lower ends of the three measuring needles 7 through the three-needle positioning plate 6, and sequentially penetrating the second flexible cushion 4 and the first flexible cushion 2. The three-needle measuring device is placed on a table top, as shown in fig. 3, a screw of the measured part 8 is placed in the middle of the three measuring needles 7, threads of the screw are in contact with the three measuring needles 7, automatic initial positioning is achieved by means of self weight of the part 8, then a micrometer is used for measuring to obtain a reading M value, after the three measuring needles 7 are initially positioned by a measuring person in the whole measuring process, the measuring needles 7 are not needed to be clamped again by hands, and an open structure is arranged above the measuring needles 7, so that the measured part 8 can be conveniently put in and taken out. The operation is simple and convenient, and the measurement efficiency is improved efficiently.
When other threads are measured, only the measuring needle 7 is needed to be taken out, the corresponding hole site is selected on the three-needle positioning plate 6 again, and the corresponding hole site is placed in the three-needle positioning plate to penetrate through the second flexible pad 4 and the first flexible pad 2, so that three-needle position positioning is realized. Convenient and fast replacement, high efficiency and convenient carrying.
Finally, it should be noted that features mentioned and/or shown in the above description of exemplary embodiments of the utility model may be combined in one or more other embodiments in the same or similar way, in combination with or instead of the corresponding features in the other embodiments. Such combined or substituted solutions should also be considered to be included within the scope of the utility model.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422897057.8U CN223500312U (en) | 2024-11-27 | 2024-11-27 | A three-needle measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422897057.8U CN223500312U (en) | 2024-11-27 | 2024-11-27 | A three-needle measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223500312U true CN223500312U (en) | 2025-10-31 |
Family
ID=97477575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422897057.8U Active CN223500312U (en) | 2024-11-27 | 2024-11-27 | A three-needle measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223500312U (en) |
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2024
- 2024-11-27 CN CN202422897057.8U patent/CN223500312U/en active Active
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