Small-step large-diameter fall outer diameter measuring tool

Abstract

The utility model discloses a small-step large-diameter-fall outer diameter measuring tool which comprises a body, a fixed measuring rod mounting column, a fixed measuring rod, a dial indicator mounting column and a dial indicator. The external diameter measuring tool can measure the large-diameter fall size of a small step, the measuring rods at the two fixed ends are adopted, the basic size between the two measuring rods can be adjusted, the adaptability of the tool to the measuring size range is improved, the measuring rods are close to the edge of the mounting column, and the adaptability to the height of the small step is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dimension detection, in particular to an outer diameter measuring tool for a small step with a large diameter drop. Background Technique

[0002] The outside micrometer is a tool for accurately measuring the outer diameter size of a workpiece and has wide applications in the fields of mechanical manufacturing, precision machining, quality inspection, etc. Although the outside micrometer is widely used as an outer diameter inspection tool at present, for the outer diameter measurement of a small step with a large diameter drop, there are problems of not being able to reach and measure. Content of the Utility Model

[0003] The purpose of the utility model is to provide an outer diameter measuring tool for a small step with a large diameter drop to solve the problems in the above background technique.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] An outer diameter measuring tool for a small step with a large diameter drop, including a body, a fixed measuring rod mounting column, a fixed measuring rod, a dial indicator mounting column and a dial indicator. An adjustment mounting hole is provided on the body. The two ends of the fixed measuring rod mounting column are respectively provided with a fixed measuring rod fixing section and a fixed measuring rod mounting section. A fixed measuring rod connecting section is provided between the fixed measuring rod fixing section and the fixed measuring rod mounting section. The two ends of the dial indicator mounting column are respectively provided with a dial indicator fixing section and a dial indicator mounting section. A dial indicator connecting section is provided between the dial indicator fixing section and the dial indicator mounting section. The fixed measuring rod connecting section and the dial indicator connecting section are adapted to the adjustment mounting hole. The cross-sections of the fixed measuring rod mounting section and the dial indicator mounting section are larger than the cross-section of the adjustment mounting hole. The fixed measuring rod mounting section is provided with a fixed measuring rod mounting hole, and the fixed measuring rod is mounted in the fixed measuring rod mounting hole. The dial indicator mounting section is provided with a dial indicator mounting hole, and the dial indicator is mounted in the dial indicator mounting hole.

[0006] Further, the fixed measuring rod fixing section and the dial indicator fixing section are provided with external threads.

[0007] Further, the dial indicator mounting hole includes a communicating mounting round hole and an adjustment long hole, and the dial indicator is mounted in the mounting round hole.

[0008] Further, the adjustment long hole is provided with an opening and a bolt mounting hole is provided on the side surface, and an adjustment bolt controls the width of the adjustment long hole through the bolt mounting hole.

[0009] Further, the two side surfaces of the dial indicator mounting hole are in a flat state.

[0010] Furthermore, the distance from the end face of the fixed measuring rod installation section close to the fixed measuring rod connection section to the fixed measuring rod installation hole is equal to the distance from the end face of the dial indicator installation section close to the dial indicator connection section to the installation round hole.

[0011] Furthermore, a plurality of short adjustment installation holes or one long adjustment installation hole are provided on the body.

[0012] Furthermore, the side surfaces where both ends of the fixed measuring rod installation hole and the dial indicator installation hole are located are flat surfaces.

[0013] Beneficial effects:

[0014] The outer diameter measuring tool in this application can complete the measurement of the size of the large diameter drop of the small step. By using fixed measuring rods at both ends, the basic dimension between the two measuring rods can be adjusted, increasing the adaptability of the tool to the measurement size range. The measuring rod is close to the edge of the installation column, increasing the adaptability to the height of the small step. Description of the drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the structure of the body in the present invention.

[0017] Figure 3 It is another schematic diagram of the structure of the body in the present invention.

[0018] Figure 4 It is the front view of the fixed measuring rod installation column in the present invention.

[0019] Figure 5 It is the left view of the fixed measuring rod installation column in the present invention.

[0020] Figure 6 It is a schematic diagram of the structure of the micrometer installation column in the present invention.

[0021] Wherein:

[0022] 1. Body; 2. Fixed measuring rod; 3. Dial indicator; 4. Fixed measuring rod installation column; 41. Fixed measuring rod installation section; 42. Fixed measuring rod connection section; 43. Fixed measuring rod fixing section; 44. Fixed measuring rod installation hole; 5. Dial indicator installation column; 51. Dial indicator installation section; 52. Dial indicator connection section; 53. Dial indicator fixing section; 54. Installation round hole; 55. Adjustment long hole; 56. Bolt installation hole; 57. Opening; 6. Adjustment installation hole; 61. Short adjustment installation hole; 62. Long adjustment installation hole; 7. Nut. Specific embodiments

[0023] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, unless otherwise clearly specified and defined, terms such as "installation", "connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, indirectly connected through an intermediate medium, or the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] In addition, unless otherwise specified, the parts used in the following embodiments are all existing parts, and their corresponding connection methods can also be realized by conventional technical means, which will not be elaborated one by one in this application.

[0025] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0026] Embodiment

[0027] A measuring tool for the outer diameter of a small step with a large diameter drop, as Figures 1 to 6 shown, includes a body 1, a fixed measuring rod mounting post 4, a fixed measuring rod 2, a dial indicator mounting post 5 and a dial indicator 3. An adjustment mounting hole 6 is provided on the body 1. The two ends of the fixed measuring rod mounting post 4 are respectively provided with a fixed measuring rod fixing section 43 and a fixed measuring rod mounting section 41. A fixed measuring rod connecting section 42 is provided between the fixed measuring rod fixing section 43 and the fixed measuring rod mounting section 41. The two ends of the dial indicator mounting post 5 are respectively provided with a dial indicator fixing section 53 and a dial indicator mounting section 51. A dial indicator connecting section 52 is provided between the dial indicator fixing section 53 and the dial indicator mounting section 51. The fixed measuring rod connecting section 42 and the dial indicator connecting section 52 are adapted to the adjustment mounting hole 6. The cross-sections of the fixed measuring rod mounting section 41 and the dial indicator mounting section 51 are larger than the cross-section of the adjustment mounting hole 6. The fixed measuring rod mounting section 41 is provided with a fixed measuring rod mounting hole 44, and the fixed measuring rod 2 is mounted in the fixed measuring rod mounting hole 44. The dial indicator mounting section 51 is provided with a dial indicator mounting hole, and the dial indicator 3 is mounted in the dial indicator mounting hole.

[0028] Specifically, the measuring tool in this embodiment can measure the size of the large diameter drop of a small step. Specifically, by setting an adjustment mounting hole 6 in the main body 1, a micrometer mounting post 5 and a fixed measuring rod mounting post 4 are vertically mounted at the upper and lower ends of the main body 1. In order to stably connect the micrometer mounting post 5 in the adjustment mounting hole 6, a micrometer connection section 52 adapted to the adjustment mounting hole 6 is provided. The micrometer connection section 2 and the micrometer mounting section 51 and the micrometer fixing section 53 at its two ends are stepped, that is, the micrometer fixing section 53 can pass through the adjustment mounting hole 6, the micrometer connection section 2 is exactly stuck in the adjustment mounting hole 6, and the micrometer mounting section 51 abuts against the orifice of the adjustment mounting hole 6. Then, by fixing the micrometer fixing section 53, the position of the micrometer mounting post 5 on the adjustment mounting hole 6 is fixed, and the fixed measuring rod mounting post 4 is installed in the same way. A micrometer 3 and a fixed measuring rod 2 are installed on the micrometer mounting post 5 and the fixed measuring rod mounting post 4, so that the measuring rod of the micrometer 3 and the fixed measuring rod 2 are opposite up and down, parallel to the main body 1 and close to the main body 1. Since the distance between the micrometer mounting post 5 and the fixed measuring rod mounting post 4 can be adjusted, the size between the measuring rod of the micrometer 3 and the fixed measuring rod 2 can be adjusted, thereby increasing the adaptability of the tool to the measurement size range. The measuring rod of the micrometer 3 is close to the edge of the micrometer mounting post 5 and the fixed measuring rod 2 is close to the edge of the fixed measuring rod mounting post 4, which can increase the adaptability to the height of the small step. Among them, the sides where the fixed measuring rod mounting holes 44 and both ends of the micrometer mounting holes are located are flat surfaces, which facilitates the installation of the fixed measuring rod 2 and the micrometer 3.

[0029] Preferably, the fixed measuring rod fixing section 41 and the micrometer fixing section 53 are provided with external threads. After the fixed measuring rod connection section 42 is inserted into the adjustment mounting hole 6, the position of the fixed measuring rod mounting post 4 in the main body 1 is fixed by screwing and tightening the nut 7 with the external thread of the fixed measuring rod fixing section 41. Similarly, the micrometer fixing section 53 is screwed and tightened with the nut 7 through the external thread to fix the position of the micrometer mounting post 5 in the main body 1.

[0030] Preferably, the micrometer mounting hole includes a communicating mounting round hole 54 and an adjustment long hole 55. The micrometer 3 is installed in the mounting round hole 54. The adjustment long hole 55 is provided with an opening 57 and a bolt mounting hole 56 on the side surface, and the adjustment bolt controls the width of the adjustment long hole 55 through the bolt mounting hole 56. Among them, the two side surfaces of the micrometer mounting hole are in a flat state.

[0031] Specifically, the micrometer 3 is installed in the mounting round hole 54. The adjustment long hole 55 communicating with the mounting round hole 54 is provided with an opening 57 and a bolt mounting hole 56. By tightening or loosening the adjustment bolt, the width of the adjustment long hole 55 can be controlled, that is, the extrusion degree of the micrometer 3 can be adjusted, so as to facilitate the taking and placing of the micrometer 3. And the side surface of the micrometer mounting hole is in a flat state, which is convenient for the installation and fixation of the adjustment bolt and the nut 7.

[0032] Preferably, the distance from the end face of the fixed measuring rod mounting section 41 close to the fixed measuring rod connecting section 42 to the fixed measuring rod mounting hole 44 is equal to the distance from the end face of the dial indicator mounting section 51 close to the dial indicator connecting section 52 to the mounting round hole 54, so as to ensure that the axes of the fixed measuring rod 2 and the measuring rod of the dial indicator 3 are aligned, thereby ensuring the accuracy of measurement.

[0033] Preferably, a plurality of short adjustment mounting holes 61 or a long adjustment mounting hole 62 are provided on the main body 1. The plurality of short adjustment mounting holes 61 are distributed on the main body 1 and are symmetrically arranged up and down on the main body 1, with at least 4 provided, so that the distance between the measuring rod of the dial indicator 3 and the fixed measuring rod 2 can be adjusted, thereby increasing the adaptability of the tool to the measurement size range; or a long adjustment mounting hole 62 is provided on the main body 1, so that the dial indicator 3 and the fixed measuring rod 2 can be fixed at any position, expanding the installable range of the dial indicator 3 and the fixed measuring rod 2, thereby increasing the adaptability of the measuring tool to the basic measurement size and the adaptability to the height of small steps.

[0034] It should be noted that the lengths of the fixed measuring rod 2 and the measuring rod of the dial indicator 3 are not fixed and can be determined according to the large drop size of the workpiece to be measured, so that the measuring tool can be closely attached to the measuring part.

[0035] Usage method:

[0036] When in use, first install the fixed measuring rod 2 onto the fixed measuring rod mounting post 4 and install the dial indicator 3 onto the dial indicator mounting post 5 respectively. Secondly, according to the basic dimension to be measured, install the fixed measuring rod mounting post 4 and the dial indicator mounting post 5 into the appropriate adjustment mounting holes 6 on the main body 1, make the end faces of the fixed measuring rod mounting section 41 and the dial indicator mounting section 51 fit with the side surface of the main body 1, ensure that the axes of the fixed measuring rod 2 and the measuring rod of the dial indicator 3 are aligned, and tighten the nuts 7 respectively. Finally, zero the instrument to ensure the accuracy of the basic dimension of the measuring tool, and tighten the nuts 7 to ensure the reliability during use.

[0037] Although the embodiments of the present invention are described in the specification, these embodiments are only for reference and should not limit the protection scope of the present invention. All omissions, substitutions and changes made within the scope not departing from the gist of the present invention should be included in the protection scope of the present invention.

Claims

1. A measuring tool for the outer diameter of a small step with a large diameter drop, characterized in that: It includes a body, a fixed measuring rod mounting post, a fixed measuring rod, a dial indicator mounting post and a dial indicator. An adjustment mounting hole is provided on the body. At both ends of the fixed measuring rod mounting post, a fixed measuring rod fixing section and a fixed measuring rod mounting section are respectively provided. A fixed measuring rod connecting section is provided between the fixed measuring rod fixing section and the fixed measuring rod mounting section. At both ends of the dial indicator mounting post, a dial indicator fixing section and a dial indicator mounting section are respectively provided. A dial indicator connecting section is provided between the dial indicator fixing section and the dial indicator mounting section. The fixed measuring rod connecting section and the dial indicator connecting section are adapted to the adjustment mounting hole. The cross-sections of the fixed measuring rod mounting section and the dial indicator mounting section are larger than the cross-section of the adjustment mounting hole. The fixed measuring rod mounting section is provided with a fixed measuring rod mounting hole, and the fixed measuring rod is mounted in the fixed measuring rod mounting hole. The dial indicator mounting section is provided with a dial indicator mounting hole, and the dial indicator is mounted in the dial indicator mounting hole.

2. The outer diameter measuring tool for small steps and large diameter drops according to claim 1, characterized in that: External threads are provided on the fixed measuring rod fixing section and the dial indicator fixing section.

3. The outer diameter measuring tool for small steps and large diameter drops according to claim 1, characterized in that: The dial indicator mounting hole includes a communicating mounting round hole and an adjustment long hole, and the dial indicator is mounted in the mounting round hole.

4. The outer diameter measuring tool for small steps and large diameter drops according to claim 3, wherein: The adjustment long hole is provided with an opening and bolt mounting holes are provided on the side surface, and an adjustment bolt controls the width of the adjustment long hole through the bolt mounting holes.

5. The outer diameter measuring tool for small steps and large diameter drops according to claim 4, characterized in that: Both side surfaces of the dial indicator mounting hole are in a flat state.

6. The outer diameter measuring tool for small steps and large diameter drops according to claim 3, characterized in that: The distance from the end surface of the fixed measuring rod mounting section close to the fixed measuring rod connecting section to the fixed measuring rod mounting hole is equal to the distance from the end surface of the dial indicator mounting section close to the dial indicator connecting section to the mounting round hole.

7. The outer diameter measuring tool for small steps and large diameter drops according to claim 1, characterized in that: Multiple short adjustment mounting holes or one long adjustment mounting hole are provided on the body.

8. The outer diameter measuring tool for small steps and large diameter drops according to claim 1, characterized in that: Both side surfaces where the two ends of the fixed measuring rod mounting hole and the dial indicator mounting hole are located are flat.

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