An inner blind hole detection auxiliary tool

Abstract

This utility model discloses an auxiliary tool for detecting internal blind holes, including an inner lever, an outer lever, a tension spring, and a support frame. The inner and outer levers are arranged in an X-shape, and the rear parts of the inner and outer levers are hinged together by a movable pin, which is mounted on the support frame. A tension spring is located at the front of the support frame, with its two ends fixedly mounted at the front ends of the inner and outer levers, respectively. A drive mechanism for driving the inner and outer levers to open outwards is located at the rear of the support frame. This utility model utilizes the principle of synchronous lever extension and retraction, employing a push rod to support the synchronous extension and retraction of the levers. When the detection head contacts the inner wall of the internal blind hole, the position of the push rod is locked, realizing the detection of the internal blind hole. It mainly solves the problem that current standard inspection tools cannot detect the diameter of internal blind holes, and has the advantages of simple structure and convenient operation.

Description

Technical Field

[0001] This utility model relates to an auxiliary tool for detecting internal blind holes. Background Technology

[0002] In the machining of machine parts, blind holes inside parts are very difficult to inspect because current standard inspection tools cannot measure the diameter of blind holes. Other auxiliary methods are required, which are difficult and inconvenient to operate, and the measured values ​​are prone to significant errors. However, similar structures appear frequently in product design. Solving the inspection problem of these parts is of long-term significance for improving product quality. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an auxiliary tool for detecting internal blind holes that is simple in structure and easy to operate.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is: an auxiliary tool for detecting internal blind holes, including an inner lever, an outer lever, a tension spring and a support frame. The inner lever and the outer lever are arranged in an X-shape. The rear parts of the inner lever and the rear parts of the outer lever are hinged together by a movable pin. The movable pin is installed on the support frame. A tension spring is provided in front of the support frame. The two ends of the tension spring are respectively fixedly installed in front of the inner lever and the outer lever. A drive mechanism for driving the inner lever and the outer lever to open outward is provided at the rear of the support frame.

[0005] The aforementioned blind hole detection aid includes a drive mechanism comprising a push rod, a movable frame, and a threaded push rod. The movable frame is located behind the support frame, and the front end of the movable frame is provided with a push rod. The push rod is slidably disposed in the sliding groove of the support frame. The front end of the push rod rests on the rear of the hinge point of the inner lever and the outer lever. The front end of the threaded push rod is positioned directly opposite the push rod. The rear end of the push rod passes through the support frame and is locked onto the movable frame by double nuts.

[0006] The aforementioned blind hole detection aid has a mounting hole at the front end of the movable frame for installing a top rod.

[0007] The aforementioned blind hole detection aid has holes at the front ends of both the inner and outer levers for attaching tension springs.

[0008] The beneficial effects of this utility model are as follows: This utility model utilizes the principle of synchronous extension and retraction of levers, and adopts a top rod to support the synchronous extension and retraction of the levers. When the detection head contacts the inner wall of the inner blind hole, the position of the top rod is locked, thereby realizing the detection of the inner blind hole. It mainly solves the problem that the current standard gauges cannot detect the diameter of the inner blind hole, and has the advantages of simple structure and convenient operation. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0010] Figure 2 This is a schematic diagram of the internal lever.

[0011] Figure 3 This is a schematic diagram of the external lever.

[0012] Figure 4 This is a schematic diagram of the support frame.

[0013] Figure 5 This is a schematic diagram of the movable frame.

[0014] Figure 6 This is a schematic diagram of the top rod structure.

[0015] Figure 7 This is a schematic diagram of the working state of this utility model. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] like Figures 1-7 As shown, an auxiliary tool for detecting internal blind holes includes an inner lever 1, an outer lever 2, a tension spring 3, and a support frame 4. The inner lever 1 and the outer lever 2 are arranged in an X-shape. The rear parts of the inner lever 1 and the outer lever 2 are hinged together by a movable pin 5. The movable pin 5 is mounted on the support frame 4. A tension spring 3 is provided at the front of the support frame 4. The two ends of the tension spring 3 are respectively fixedly installed at the front ends of the inner lever 1 and the outer lever 2. The front ends of the inner lever 1 and the outer lever 2 form a detection head. A drive mechanism for driving the inner lever 1 and the outer lever 2 to open outward is provided at the rear of the support frame 4.

[0018] The driving mechanism includes a push rod 6, a movable frame 7, and a threaded push rod 8. The movable frame 7 is located behind the support frame 4, and the push rod 6 is provided at the front end of the movable frame 7. The push rod 6 is slidably disposed in the sliding groove 12 of the support frame 4. The front end of the push rod 6 abuts against the rear of the hinge point of the inner lever 1 and the outer lever 2. If the push rod 6 continues to move forward, the inner lever 1 and the outer lever 2 will open outward according to the principle of synchronous extension and contraction of levers. The front end of the threaded push rod 8 is positioned directly opposite the push rod 6, and the rear end of the push rod 6 passes through the support frame 4 and is locked onto the movable frame 7 by double nuts 9.

[0019] The movable frame 7 has a mounting hole 10 at its front end for mounting the top rod 6.

[0020] Both the front end of the inner lever 1 and the front end of the outer lever 2 are provided with holes 11 for the tension spring 3 to be hooked.

[0021] The working process of this utility model is as follows: Utilizing the principle of synchronous extension and retraction of levers, the top rod 6 is used to support the synchronous extension and retraction of the lever. When the detection head contacts the inner wall of the inner blind hole, the position of the top rod 6 is locked to realize the detection of the inner blind hole. After the position of the top rod 6 is locked, the top rod 6 can be pulled out, the detection head retracts, and the inner blind hole detection auxiliary tool can be taken out. After taking it out, the lever can be widened and the top rod 6 can be inserted again. At this time, the locked size is restored, and the width dimension A of the detection head can be measured.

[0022] When using this utility model, attention should be paid to the accurate reset of the lever angle to ensure the accurate and reliable detection of the inner blind hole size. In addition, the position of the threaded push rod 8 should not change after the inner blind hole detection auxiliary tool is removed. Therefore, the push rod 6 is locked with double nuts 9. This utility model is simple to operate, has good processability and adaptability, and has a wide range of promotion and practical value.

Claims

1. An inner blind hole detection aid, characterized in that: It includes an inner lever, an outer lever, a tension spring, and a support frame. The inner lever and the outer lever are arranged in an X-shape. The rear parts of the inner lever and the outer lever are hinged together by a movable pin, which is mounted on the support frame. A tension spring is provided in front of the support frame, and the two ends of the tension spring are fixedly installed at the front ends of the inner lever and the outer lever, respectively. A drive mechanism for driving the inner lever and the outer lever to open outward is provided at the rear of the support frame.

2. The auxiliary tool for detecting internal blind holes according to claim 1, characterized in that: The driving mechanism includes a push rod, a movable frame, and a threaded push rod. The movable frame is located behind the support frame, and the front end of the movable frame is provided with a push rod. The push rod is slidably disposed in the sliding groove of the support frame. The front end of the push rod rests on the rear of the hinge point of the inner lever and the outer lever. The front end of the threaded push rod is positioned directly opposite the push rod. The rear end of the push rod passes through the support frame and is locked onto the movable frame by double nuts.

3. The auxiliary tool for detecting internal blind holes according to claim 2, characterized in that: The front end of the movable frame is provided with mounting holes for installing the top rod.

4. The auxiliary tool for detecting internal blind holes according to claim 1, characterized in that: Both the front end of the inner lever and the front end of the outer lever are provided with holes for the tension spring hook.

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