Inner hole annular groove detection auxiliary tool

Abstract

The utility model discloses a kind of inner hole annular groove detection auxiliary, including weight, side head pole, support rod, locking screw rod, the support rod is horizontally arranged, and the vertical through-hole of left side support rod is arranged, the side head pole is vertically inserted in through-hole, and weight is fixedly arranged on side head pole top, the axial installation hole of support rod middle is arranged, installation hole extends from the right end of support rod to communicate with through-hole, inner thread is arranged on the left side hole wall of installation hole, and locking screw rod is installed in installation hole.The utility model uses gravity sagging effect to make side head pole automatic contact annular groove inner diameter surface, after using depth vernier caliper to detect side head pole extension length, inner hole annular groove diameter size can be calculated, simple structure, convenient operation, good manufacturing technology.

Description

Technical Field

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

[0002] When machining internal holes, it is often necessary to machine annular grooves, mainly to facilitate the assembly of locating retaining rings or sealing rings, such as... Figure 1 As shown, Φ2 is the measured diameter of the inner hole. When the inner hole annular groove diameter Φ1 is too large, the retaining ring or sealing ring will sink into the groove, failing to perform its intended function or having a negligible effect. When the inner hole annular groove diameter Φ1 is too small, the retaining ring or sealing ring will protrude and easily fall off, potentially damaging other components of the mechanism. Therefore, the inner hole annular groove diameter should be strictly controlled, but currently, due to limitations of existing standard measuring tools, this dimension is difficult to detect and control. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides an auxiliary tool for detecting annular grooves in internal 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 annular grooves in internal holes, including a weight, a side rod, a support rod, and a locking screw. The support rod is horizontally arranged, and a through hole is vertically arranged on the left side of the support rod. The side rod is vertically inserted into the through hole, and a weight is fixedly arranged on the top of the side rod. An axial mounting hole is arranged in the middle of the support rod, and the mounting hole extends from the right end of the support rod to communicate with the through hole. An internal thread is provided on the left side wall of the mounting hole, and the locking screw is installed in the mounting hole.

[0005] The aforementioned internal annular groove detection tool includes a side rod comprising a rod portion and a tip portion. The rod portion is inserted into a through hole, with the upper end of the rod portion exposed and threadedly connected to a counterweight, and the tip portion fixedly disposed at the lower end of the rod portion.

[0006] The aforementioned annular groove testing tool has a through hole whose shape matches the shape of the side rod.

[0007] The aforementioned annular groove testing tool for inner holes has an end cap threadedly connected to the right end of the support rod, and the locking screw passes through the end cap and is inserted into the mounting hole.

[0008] The beneficial effects of this utility model are as follows: This utility model uses the effect of gravity to make the side rod automatically contact the inner diameter surface of the annular groove. After measuring the extension length of the side rod with a depth vernier caliper, the inner diameter of the annular groove can be calculated. The structure is simple, the operation is convenient, and the manufacturing process is good. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the internal annular groove.

[0010] Figure 2This is a schematic diagram of the structure of this utility model.

[0011] Figure 3 This is a schematic diagram of the side-end rod.

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

[0013] Figure 5 This is a schematic diagram of the locking screw.

[0014] Figure 6 This is a schematic diagram of the operation process of this utility model. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] like Figures 2-6 As shown, an auxiliary tool for detecting annular grooves in internal holes includes a counterweight 1, a side rod 2, a support rod 3, and a locking screw 4. The support rod 3 is horizontally arranged, and a through hole 5 is vertically arranged on the left side of the support rod 3. The side rod 2 is vertically inserted into the through hole 5, and the counterweight 1 is fixedly arranged on the top of the side rod 2. An axial mounting hole 6 is arranged in the middle of the support rod 3. The mounting hole 6 extends from the right end of the support rod 3 to communicate with the through hole 5. An internal thread is provided on the left side wall of the mounting hole 6, and the locking screw 4 is installed in the mounting hole 6.

[0017] like Figure 3 As shown, the side-end rod 2 includes a rod portion 7 and a tip 8. The rod portion 7 is inserted into the through hole 5, with its upper end exposed and threadedly connected to the counterweight 1. The tip 8 is fixedly provided at the lower end of the rod portion 7. The shape of the through hole 5 matches the shape of the side-end rod 2.

[0018] The right end of the support rod 3 is threadedly connected to an end cap 9, and the locking screw 4 passes through the end cap 9 and is inserted into the mounting hole 6.

[0019] When using, first tighten the locking screw 4 to "lock" the counterweight 1 and the side head rod 2. Then, ensure the support rod 3 is flush against the lowest point of the inner hole arm in the vertical direction. Figure 6 As shown in the diagram above; when the side rod 2 enters the annular groove area, the locking screw 4 is loosened. At this time, the counterweight 1 and the side rod 2 fall vertically into the "lowest point" of the annular groove under the action of gravity. Then, the locking screw 4 is tightened to "lock" the counterweight 1 and the side assembly, that is, to "lock" the extended length L1 of the side rod 2, as shown. Figure 6 As shown in the middle figure; then, the side head extension length L1 can be measured using a depth vernier caliper, as shown. Figure 6 As shown in the figure below, the inner hole annular groove diameter Φ1 can be obtained through calculation.

[0020] When using it, pay attention to the fact that the support rod 3 is close to the lowest point of the inner hole arm in the vertical direction, and that the weight 1 and the side rod 2 fall vertically into the "lowest point" of the annular groove under the action of gravity.

Claims

1. An auxiliary tool for detecting annular grooves in internal holes, characterized in that: The device includes a counterweight, a side rod, a support rod, and a locking screw. The support rod is horizontally positioned, and a through hole is vertically positioned on the left side of the support rod. The side rod is vertically inserted into the through hole, and a counterweight is fixedly positioned at the top of the side rod. An axial mounting hole is provided in the middle of the support rod, extending from the right end of the support rod to communicate with the through hole. An internal thread is provided on the left side wall of the mounting hole, and the locking screw is installed in the mounting hole.

2. The internal hole annular groove detection aid according to claim 1, characterized in that: The side rod includes a rod portion and a tip portion. The rod portion is inserted into a through hole, with the upper end of the rod portion exposed and threadedly connected to the counterweight. The tip portion is fixedly provided at the lower end of the rod portion.

3. The annular groove detection tool according to claim 2, characterized in that: The shape of the through hole matches the shape of the side rod.

4. The annular groove detection tool according to claim 1, characterized in that: The right end of the support rod is threaded with an end cap, and the locking screw passes through the end cap and is inserted into the mounting hole.

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