Special gauge for measuring pitch diameter of internal thread

Abstract

The utility model discloses a special gauge for measuring the pitch diameter of an internal thread, which is characterized in that a telescopic measuring head is arranged inside a handle main body; the dial indicator is installed at one end of the handle body, and a measuring head of the dial indicator extends into the handle body and abuts against the telescopic measuring head. One end of the main body spring is installed inside the handle main body, the other end of the main body spring abuts against the telescopic measuring head, and the main body spring sleeves the measuring head of the dial indicator and the telescopic measuring head; the plurality of threaded measuring heads are mounted at the other end of the handle main body, a spring is arranged between each threaded measuring head and the handle main body, and the telescopic probe can extend among the plurality of threaded measuring heads; one end of the measuring head control handle is rotatably installed on the outer wall of the handle body, one end of the measuring head connecting rod extends out of the handle body and is rotatably installed on the measuring head control handle, and the other end of the measuring head connecting rod penetrates through the handle body. The thread pitch diameter measuring device is simple in structure, low in production and manufacturing cost and convenient to use, and workers can directly measure the thread pitch diameter on line.

Description

Technical Field

[0001] The utility model relates to the technical fields of threaded mid-diameter measuring gauges and the like, in particular to a special gauge for measuring the mid-diameter of an internal thread. Background Art

[0002] Thread is the most commonly used link in the machinery industry and is widely used. In mechanical processing, it is often necessary to control the thread size, such as the major diameter, minor diameter and middle diameter of the thread. The middle diameter of the thread is the most difficult to control. It is usually controlled by a thread go / no-go gauge. However, some end customers require the control and measurement of the thread middle diameter. Since the processed parts in the factory are internal thread middle diameters, end customers need to control the middle diameter size and require data to be recorded. Traditional go / no-go gauges can only ensure the go / no-go of the thread but cannot measure the data. The cost of customizing thread middle diameter gauges is high. Utility Model Content

[0003] In view of this, in order to solve the above problems, the purpose of the utility model is to provide a special gauge for measuring the middle diameter of internal threads, which includes:

[0004] Dial indicator, handle body, telescopic probe, several threaded probes, body spring, probe control handle, probe connecting rod;

[0005] The telescopic probe is arranged inside the handle body;

[0006] The dial gauge is mounted on one end of the handle body, and the probe of the dial gauge extends into the handle body and abuts against the telescopic probe;

[0007] One end of the main body spring is installed inside the handle body, the other end of the main body spring is against the telescopic probe, and the main body spring is sleeved on the probe of the dial indicator and the telescopic probe;

[0008] A plurality of threaded probes are installed at the other end of the handle body, and a spring is provided between each threaded probe and the handle body, and the telescopic probe can be extended between the plurality of threaded probes;

[0009] One end of the probe control handle is rotatably mounted on the outer wall of the handle body, one end of the probe connecting rod extends out of the handle body and is rotatably mounted on the probe control handle, and the other end of the probe connecting rod passes through the handle body.

[0010] In the above-mentioned special gauge for measuring the middle diameter of an internal thread, one end of the telescopic probe is provided with a step, and the main body spring abuts against the step.

[0011] In the above-mentioned special gauge for measuring the middle diameter of an internal thread, one end of the telescopic probe extending into the plurality of thread side heads is arranged in a conical shape.

[0012] The above-mentioned special gauge for measuring the middle diameter of an internal thread, wherein, further comprises: a locking cover plate; the locking cover plate is mounted on the handle body through a locking screw, the probe of the dial indicator passes through the locking cover plate and extends into the handle body, and the main body spring abuts against the locking cover plate.

[0013] The above-mentioned special gauge for measuring the middle diameter of internal threads, wherein, further comprises: a clamping cover plate; the clamping cover plate is installed on the handle body through a plurality of locking screws, and the clamping cover plate clamps the plurality of threaded probes onto the handle body.

[0014] In the above-mentioned special gauge for measuring the middle diameter of an internal thread, the dial indicator is fixed to the handle body by a dial indicator locker.

[0015] The above-mentioned special inspection tool for measuring the middle diameter of internal threads, wherein the clamping cover plate includes: a mounting portion and a plurality of clamping portions; the mounting portion is mounted on the handle body by a plurality of locking screws, one end of the mounting portion extends outwardly and is provided with a plurality of clamping portions, and an end of each clamping portion away from the mounting portion is bent inwardly and clamped on two adjacent threaded probes.

[0016] In the above-mentioned special gauge for measuring the middle diameter of an internal thread, a plurality of anti-slip rubber rings are provided on the outer wall of the handle body.

[0017] Compared with the prior art, the above technical solution has the following positive effects:

[0018] Through the application of the utility model, a special gauge for measuring the mean diameter of internal threads is provided. When the probe control handle is pressed, the telescopic probe moves upward, and there is no force from the telescopic probe to the thread probes. The thread probes are retracted inward under the action of the spring. When the measurement control handle is released, the main spring pushes the telescopic probe downward due to the elastic force. At this time, the telescopic probe extends into the thread probes, pushing the thread probes to expand outward for measurement. The application has a simple structure, low manufacturing cost, and is easy to use, so that the staff can directly measure the mean diameter of the thread online. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a schematic diagram of a special gauge for measuring the middle diameter of an internal thread.

[0020] Figure 2 The utility model is a side view of a special gauge for measuring the middle diameter of an internal thread.

[0021] Figure 3The utility model is a front view of a special gauge for measuring the middle diameter of an internal thread.

[0022] Figure 4 The utility model is a three-dimensional diagram of a special gauge for measuring the middle diameter of an internal thread.

[0023] 1. Telescopic probe; 2. Handle body; 3. Dial indicator; 4. Main body spring; 5. Probe control handle; 6. Probe connecting rod; 7. Threaded probe; 8. Step; 9. Locking cover; 10. Pressing cover; 11. Dial indicator locker; 12. Anti-slip rubber ring; 13. Installation part; 14. Pressing part. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations, but they are not intended to limit the present invention.

[0025] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0026] like Figures 1 to 4 As shown, a special gauge for measuring the middle diameter of an internal thread of a preferred embodiment is shown, which includes: a dial indicator 3, a handle body 2, a telescopic probe 1, a plurality of threaded probes 7, a main body spring 4, a probe control handle 5, and a probe connecting rod 6.

[0027] The telescopic probe 1 is arranged inside the handle body 2; the dial indicator 3 is installed at one end of the handle body 2, and the probe of the dial indicator 3 extends into the handle body 2 and abuts against the telescopic probe 1; one end of the main body spring 4 is installed inside the handle body 2, the other end of the main body spring 4 abuts against the telescopic probe 1, and the main body spring 4 is sleeved on the probe of the dial indicator 3 and the telescopic probe 1; a plurality of threaded probes 7 are installed at the other end of the handle body 2, and a spring is provided between each threaded probe 7 and the handle body 2, and the telescopic probe 1 can extend between the plurality of threaded probes 7; one end of the probe control handle 5 is rotatably installed on the outer wall of the handle body 2, one end of the probe connecting rod 6 extends out of the handle body 2 and is rotatably installed on the probe control handle 5, and the other end of the probe connecting rod 6 passes through the handle body 2.

[0028] During actual use, the probe control handle 5 is pressed, and the telescopic probe 1 moves upward. There is no force from the telescopic probe 1 to the threaded probes 7, and the threaded probes 7 are retracted inwardly under the action of the spring. When the measurement control handle 5 is released, the main spring 4 pushes the telescopic probe 1 downward due to the elastic force. At this time, the elastic force of the main spring 4 is greater than the elastic force of the spring, and the telescopic probe 1 extends into the threaded probes 7, pushing the threaded probes 7 to expand outward for measurement.

[0029] The utility model also has the following implementation methods based on the above:

[0030] Further, a special gauge for measuring the middle diameter of an internal thread is provided, wherein one end of the telescopic probe 1 is provided with a step 8, and the main spring 4 abuts against the step 8. Specifically, one end of the telescopic probe 1 extends into the main spring 4, and the end of the main spring 4 abuts against the step 8.

[0031] Further, a special gauge for measuring the middle diameter of an internal thread is provided, wherein one end of the telescopic probe 1 extending into a plurality of thread probes 7 is arranged in a conical shape. Specifically, when the measuring control handle 5 is loosened, one end of the telescopic probe 1 extending into a plurality of thread probes 7 is arranged in a conical shape, so that the plurality of thread probes 7 are expanded.

[0032] Furthermore, a special gauge for measuring the middle diameter of an internal thread, wherein the locking cover plate 9 is installed on the handle body 2 through a locking screw, the probe of the dial indicator 3 passes through the locking cover plate 9 and extends into the handle body 2, and the main body spring 4 abuts against the locking cover plate 9. Specifically, after the telescopic probe 1 and the main body spring 4 are installed in the handle body 2, the locking cover plate 9 is installed on the handle body 2.

[0033] Furthermore, a special gauge for measuring the middle diameter of an internal thread, wherein the gauge further comprises: a clamping cover plate 10; the clamping cover plate 10 is mounted on the handle body 2 through a plurality of locking screws, and the clamping cover plate 10 clamps a plurality of thread gauges 7 on the handle body 2. Specifically, the plurality of thread gauges 7 are mounted on the handle body 2 through the clamping cover plate 10.

[0034] Furthermore, a special gauge for measuring the middle diameter of an internal thread is provided, wherein the dial indicator 3 is fixed to the handle body 2 via a dial indicator locker 11 .

[0035] Further, a special gauge for measuring the middle diameter of internal threads, wherein the clamping cover plate 10 comprises: a mounting portion 13 and a plurality of clamping portions 14; the mounting portion 13 is mounted on the handle body 2 by a plurality of locking screws, one end of the mounting portion 13 is extended outwardly to be provided with a plurality of clamping portions 14, and one end of each clamping portion 14 away from the mounting portion 13 is bent inwardly to be clamped on two adjacent threaded probes 7. Specifically, the mounting portion 13 is used for mounting, and the plurality of clamping portions 14 are used to limit the plurality of threaded probes 7.

[0036] Further, a special gauge for measuring the middle diameter of an internal thread is provided, wherein the outer wall of the handle body 2 is provided with a plurality of anti-skid rubber rings 12. Specifically, when the handle body 2 is held, the anti-skid rubber rings 12 play an anti-skid role.

[0037] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A special gauge for measuring the middle diameter of an internal thread, characterized in that: include: Dial indicator, handle body, telescopic probe, several threaded probes, body spring, probe control handle, probe connecting rod; The telescopic probe is arranged inside the handle body; The dial gauge is mounted on one end of the handle body, and the probe of the dial gauge extends into the handle body and abuts against the telescopic probe; One end of the main body spring is installed inside the handle body, the other end of the main body spring is against the telescopic probe, and the main body spring is sleeved on the probe of the dial indicator and the telescopic probe; A plurality of threaded probes are installed at the other end of the handle body, and a spring is provided between each threaded probe and the handle body, and the telescopic probe can extend between the plurality of threaded probes; One end of the probe control handle is rotatably mounted on the outer wall of the handle body, one end of the probe connecting rod extends out of the handle body and is rotatably mounted on the probe control handle, and the other end of the probe connecting rod passes through the handle body.

2. A special gauge for measuring the middle diameter of an internal thread according to claim 1, characterized in that: One end of the telescopic measuring head is provided with a step, and the main body spring abuts against the step.

3. A special gauge for measuring the middle diameter of an internal thread according to claim 1, characterized in that: One end of the telescopic probe extending into the plurality of threaded side heads is arranged in a conical shape.

4. A special gauge for measuring the middle diameter of an internal thread according to claim 1, characterized in that: Also includes: Locking cover; the locking cover is installed on the handle body through a locking screw, the probe of the dial indicator passes through the locking cover and extends into the handle body, and the main body spring is against the locking cover.

5. A special gauge for measuring the middle diameter of internal threads according to claim 1, characterized in that: Also includes: A clamping cover plate; the clamping cover plate is installed on the handle body through a plurality of locking screws, and the clamping cover plate clamps the plurality of threaded probes onto the handle body.

6. A special gauge for measuring the middle diameter of internal threads according to claim 1, characterized in that: The dial indicator is fixed to the handle body through a dial indicator locker.

7. A special gauge for measuring the middle diameter of internal threads according to claim 5, characterized in that: The clamping cover plate includes: a mounting portion and a plurality of clamping portions; the mounting portion is mounted on the handle body by means of a plurality of locking screws, one end of the mounting portion extends outwardly to be provided with a plurality of clamping portions, and an end of each clamping portion away from the mounting portion is bent inwardly to be clamped on two adjacent threaded probes.

8. A special gauge for measuring the middle diameter of an internal thread according to claim 1, characterized in that: The outer wall of the handle body is provided with a plurality of anti-slip rubber rings.

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