Detection tool for measuring fall of spoke mounting surface

Abstract

The utility model discloses a spoke mounting surface fall measurement gauge, which comprises a positioning disc and a dial indicator, the bottom end of the positioning disc is arranged to form a bottom surface, the center of the bottom surface protrudes downwards to form a clamping and embedding part, the clamping and embedding part is clamped and embedded in a middle hole of a spoke, and the peripheral side of the bottom surface of the positioning disc abuts against the mounting surface of the spoke; a detection hole is formed in the surface of the positioning disc, the detection hole is located in one side of the clamping and embedding part and penetrates through the positioning disc, a measuring rod of the dial indicator penetrates into the detection hole of the positioning disc, the dial indicator and the positioning disc are kept to be fixed, and a measuring head of the dial indicator abuts against the circumferential plane of the spoke center hole. The detection tool has the advantages that the detection tool measures the fall between the circumferential plane of the center hole of the spoke and the installation surface of the spoke, the measurement precision is high, and the measurement efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel production, in particular to a gauge for measuring the drop of a spoke installation surface. Background Art

[0002] The spoke requires that the plane around the center hole has a concave drop compared to the mounting surface, such as Figure 8 As shown, the drop dimension between the plane around the hole of the spoke and the mounting surface is "L". The drop dimension between the plane around the hole of the spoke and the mounting surface is set so that the bolts have sufficient pre-tightening force when the spoke is installed on the body. In the production process of the spoke, in order to detect the drop dimension between the plane around the hole of the spoke and the mounting surface, the existing measurement method is to measure with a flat disk and a feeler gauge. Repeated attempts of feeler gauges of different thicknesses during measurement not only have insufficient measurement accuracy, but also have the disadvantage of low measurement efficiency, which needs to be improved. Utility Model Content

[0003] The utility model aims to provide a gauge for measuring the drop of a spoke installation surface which has high measuring accuracy and high measuring efficiency.

[0004] The utility model proposes a gauge for measuring the drop of a spoke mounting surface, comprising a positioning plate and a dial indicator, wherein the bottom end of the positioning plate is arranged to form a bottom surface, the center of the bottom surface protrudes downward to form an embedding portion, the embedding portion is embedded in a center hole of the spoke, and the peripheral side of the bottom surface of the positioning plate abuts against the mounting surface of the spoke; a detection hole is formed on the surface of the positioning plate, the detection hole is located at one side of the embedding portion and passes through the positioning plate, a measuring rod of the dial indicator is inserted into the detection hole of the positioning plate, and the dial indicator is kept fixed to the positioning plate, so that the measuring head of the dial indicator abuts against the peripheral plane of the center hole of the spoke.

[0005] Preferably, a fixing screw hole is formed on one side surface of the positioning plate, the fixing screw hole is connected to the detection hole, a fixing bolt is screwed into the fixing screw hole, a sleeve is fixedly sleeved on the outer periphery of the upper section of the measuring rod of the dial indicator, and the fixing bolt is tightly pressed against the sleeve of the dial indicator.

[0006] Preferably, a fixing groove is formed on one side surface of the sleeve, and one end of the fixing bolt is inserted into the fixing groove.

[0007] Preferably, the diameter size of the detection hole is set to "D", the diameter size of the sleeve of the dial indicator is set to "W", and D>W is satisfied.

[0008] Preferably, a notch is formed on the peripheral side of the embedding portion, and one side of the detection hole passes through the notch.

[0009] Preferably, the diameter dimension of the measuring head is set to "C", the depth dimension of the notch is set to "H", and H>0.5W-0.5C is satisfied.

[0010] Preferably, the diameter size of the embedding portion is set to "M", the diameter size of the hole in the spoke is set to "T", and TM≤0.1mm is satisfied.

[0011] Preferably, the middle parts of the positioning plate and the embedding part are hollow.

[0012] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0013] 1. The dial indicator is fixed in the detection hole of the positioning plate. The positioning plate rotates to make the measuring head of the dial indicator rotate one circle along the circumferential plane of the spoke center hole. The dial indicator is used to measure the drop between the circumferential plane of the spoke center hole and the spoke mounting surface. It not only has high measurement accuracy, but also has higher measurement efficiency.

[0014] 2. A fixing screw hole is formed on one side surface of the positioning plate, and the measuring rod of the dial indicator is inserted into the detection hole of the positioning plate. A fixing bolt is screwed into the fixing screw hole and inserted into the fixing groove of the sleeve and tightened. This not only makes the installation between the dial indicator and the positioning plate firm, but also makes disassembly easy.

[0015] 3. A notch is formed on one side of the embedded part, and the notch is made to correspond to the detection hole to prevent the embedded part from interfering with the dial indicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a positioning plate of an embodiment;

[0017] Figure 2 is a top view of the positioning plate of the embodiment;

[0018] Figure 3 is a cross-sectional view of a gauge for measuring the drop of a spoke mounting surface in an embodiment;

[0019] Figure 4 is a cross-sectional view of a spoke product of an embodiment;

[0020] Figure 5 is a cross-sectional view of a positioning plate of an embodiment;

[0021] Figure 6 1 is a front view of the dial indicator of the embodiment;

[0022] Figure 7 This is a schematic diagram of a spoke mounting surface drop measurement detection state in an embodiment;

[0023] Figure 8 It is an embodiment Figure 7 A partial enlarged view of point A in the middle.

[0024] Figure numerals: 1, positioning plate; 11, embedding part; 111, notch; 12, detection hole; 13, fixing screw hole; 14, fixing bolt; 15, bottom surface; 2, dial indicator; 21, measuring rod; 22, measuring head; 23, sleeve; 231, fixing groove. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1-8 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] Reference Figure 1-Figure 4 A gauge for measuring the drop of a spoke mounting surface, comprising a positioning plate 1 and a dial indicator 2, wherein the bottom end of the positioning plate 1 is configured to form a bottom surface 15, and an embedding portion 11 is formed by protruding downward from the center of the bottom surface of the positioning plate 1. Since the diameter size of the spoke center hole to be detected is "T", the diameter size of the embedding portion 11 is set to "M", and the relationship between the diameter size of the embedding portion 11 and the diameter size of the spoke center hole satisfies TM≤0.1mm. When it is necessary to measure the drop between the circumferential plane of the spoke center hole and the mounting surface, the embedding portion 11 at the bottom end of the positioning plate 1 is embedded in the center hole of the spoke, so that the embedding portion 11 at the bottom end of the positioning plate 1 maintains a small gap with the inner wall of the center hole of the spoke, and at the same time, the circumferential side of the bottom end of the positioning plate 1 abuts against the mounting surface of the spoke.

[0027] Reference Figure 5 and Figure 6 A detection hole 12 is provided on the surface of the positioning plate 1. The detection hole 12 is located on the peripheral side of the embedded part 11 and penetrates the positioning plate 1 in the vertical direction. The measuring rod 21 of the dial gauge 2 is inserted into the detection hole 12 on the positioning plate 1, so that the measuring head 22 at the bottom of the measuring rod 21 abuts against the circumferential plane of the spoke hole. The positioning plate 1 is rotated along the spoke hole for one circle, so that the measuring head 22 of the dial gauge 2 slides along the circumferential plane of the spoke hole for one circle, so as to record the maximum value a and the minimum value b displayed on the dial gauge 2. The actual drop between the circumferential plane of the spoke hole and the spoke mounting surface can be obtained by the drop set between the circumferential plane of the spoke hole and the spoke mounting surface. In addition, the middle part of the positioning plate 1 and the embedded part 11 is hollowed out to reduce the weight of the spoke mounting surface drop measurement gauge, so as to facilitate the use and operation of the spoke mounting surface drop measurement gauge.

[0028] In order to prevent the measuring rod 21 of the dial gauge 2 from loosening in the detection hole 12, the diameter of the detection hole 12 is set to "D", and a sleeve 23 is fixedly sleeved on the upper periphery of the measuring rod 21 of the dial gauge 2. The diameter of the sleeve 23 of the dial gauge 2 is set to "W", and the relationship between the diameter of the sleeve 23 and the diameter of the detection hole 12 satisfies D>W. In the process of rotating the positioning plate 1, in order to ensure that the position between the dial gauge 2 and the positioning plate 1 is kept stable, a fixing screw hole 13 is formed on one side surface of the positioning plate 1, so that the fixing screw hole 13 is connected with the detection hole 12 of the positioning plate 1, and a fixing groove 231 is formed on the surface of the sleeve 23. After the measuring rod 21 and the sleeve 23 of the dial gauge 1 are inserted into the detection hole 12, the fixing groove 231 corresponds to the position of the fixing screw hole 13. A fixing bolt 14 is screwed into the fixing screw hole 13 , so that the end of the fixing bolt 14 is embedded in the fixing groove 231 of the sleeve 23 and is tightly pressed against each other.

[0029] In order to make the measuring head 22 of the dial gauge 2 contact the highest point of the circumferential plane of the spoke hole, a notch 111 is formed on one side of the clamping part 11. The notch 111 on one side of the clamping part 11 corresponds to the position of the detection hole 12 opened in the positioning plate 1, so that the notch 111 of the clamping part 11 is located below the detection port. The depth dimension of the notch 111 on one side of the clamping part 11 is set to "H", and the diameter dimension of the measuring head 22 is set to "C", and the relationship between the depth dimension of the notch 111, the diameter dimension of the measuring head 22 and the diameter dimension of the sleeve 23 satisfies H>0.5W-0.5C, so as to avoid interference with the measurement of the dial gauge 2.

[0030] Reference Figure 6 , Figure 7 and Figure 8 The specific implementation principle of the embodiment of the present application is: when the measuring fixture is needed to measure the drop between the spoke hole circumference plane and the spoke mounting surface, the measuring rod 21 of the dial gauge 2 is inserted into the measuring hole of the positioning plate 1, so that the side surface of the sleeve 23 abuts against the inner wall of the detection hole 12, and the fixing bolt 14 is screwed into the screw hole on one side surface of the positioning plate 1, so that the fixing bolt 14 abuts against the sleeve 23 of the dial gauge 2. Then press the off / on button of the dial gauge 2, and then press the zero button to make the dial gauge 2 zero.

[0031] Place the spoke to be measured horizontally on the table, and install the positioning plate 1 on the spoke so that the bottom locking portion 11 of the positioning plate 1 is locked in the center hole of the spoke, so that the bottom circumference of the positioning plate 1 is in contact with the mounting surface of the spoke, and the measuring head 22 of the dial indicator 2 is in contact with the center hole circumferential plane of the spoke. Then rotate the positioning plate 1 along the center hole of the spoke for one circle, and observe and record the maximum number a and the minimum number b displayed on the dial indicator 2. When the designed drop between the center hole circumferential plane of the spoke and the mounting surface of the spoke is L, it can be concluded that the actual drop between the center hole circumferential plane of the spoke and the mounting surface of the spoke is between La and Lb. This not only accurately measures the drop between the center hole circumferential plane of the spoke and the mounting surface of the spoke, but also significantly improves the detection efficiency.

[0032] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all protected by the utility model.

Claims

1. A gauge for measuring the drop of a spoke mounting surface, characterized in that: It includes a positioning plate and a dial indicator, wherein the bottom end of the positioning plate is arranged to form a bottom surface, the center of the bottom surface protrudes downward to form a clamping portion, the clamping portion is clamped in the middle hole of the spoke, and the peripheral side of the bottom surface of the positioning plate abuts against the mounting surface of the spoke; A detection hole is formed on the surface of the positioning plate, and the detection hole is located on one side of the embedding portion and passes through the positioning plate. The measuring rod of the dial indicator is inserted into the detection hole of the positioning plate, and the dial indicator and the positioning plate are kept fixed so that the measuring head of the dial indicator is in contact with the circumferential plane of the hole in the spoke.

2. A gauge for measuring the drop of a spoke mounting surface according to claim 1, characterized in that: A fixing screw hole is formed on one side surface of the positioning plate, the fixing screw hole is connected to the detection hole, a fixing bolt is screwed into the fixing screw hole, a sleeve is fixedly sleeved on the outer periphery of the upper section of the measuring rod of the dial indicator, and the fixing bolt is tightly pressed against the sleeve of the dial indicator.

3. A gauge for measuring the drop of a spoke mounting surface according to claim 2, characterized in that: A fixing groove is formed on one side surface of the sleeve, and one end of the fixing bolt is inserted into the fixing groove.

4. A gauge for measuring the drop of a spoke mounting surface according to claim 2, characterized in that: The diameter size of the detection hole is set to "D", the diameter size of the sleeve of the dial indicator is "W", and D>W is satisfied.

5. A gauge for measuring the drop of a spoke mounting surface according to claim 4, characterized in that: A notch is formed on the peripheral side of the embedding portion, and one side of the detection hole passes through the notch.

6. A gauge for measuring the drop of a spoke mounting surface according to claim 5, characterized in that: The diameter dimension of the measuring head is set to "C", the depth dimension of the notch is set to "H", and H>0.5W-0.5C is satisfied.

7. A gauge for measuring the drop of a spoke mounting surface according to claim 1, characterized in that: The diameter size of the embedding portion is set to "M", the diameter size of the hole in the spoke is set to "T", and TM≤0.1mm is satisfied.

8. A gauge for measuring the drop of a spoke mounting surface according to claim 1, characterized in that: The middle parts of the positioning plate and the embedding part are hollowed out.

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