Large outside micrometer measuring adjustment bracket and method of use

Abstract

The application discloses a large-scale outer diameter micrometer measuring and adjusting support, which comprises a base, a connecting screw, an adjusting nut and an upper supporting block. The bottom of the base is defined as a first plane. The lower end of the connecting screw is threadedly connected with the base and fixed, and the axis of the connecting screw is perpendicular to the first plane. The height position of the adjusting nut can be adjusted by threadedly connecting the lower end of the adjusting nut with the upper end of the connecting screw, and the adjusting nut can be fixed with the connecting screw through a fixing screw arranged at the lower end of the side wall of the adjusting nut. The upper supporting block can be inserted into the upper end of the adjusting nut, and the adjusting nut can be fixed with the upper supporting block through a fixing screw arranged at the upper end of the side wall of the adjusting nut. The upper supporting block has an upper supporting surface, which is defined as a second surface, and the second surface is parallel to the first surface. The application further discloses a use method of the large-scale outer diameter micrometer measuring and adjusting support.

Description

Technical Field

[0001] This invention relates to the field of precision measuring instrument technology, and in particular to a large outside micrometer measuring and adjusting bracket and its usage method. Background Technology

[0002] With the development of the machinery industry, precision machine tools have been widely used, and the application range of some large lathes is also becoming wider. There are more and more workpieces with a diameter of 500mm or more. The outer diameter accuracy of large mechanical parts (such as wind turbine main shafts and tunnel boring machine discs) directly affects the assembly performance. However, existing large outer micrometers (usually referring to measuring ranges of 500mm or more) rely on manual hand operation, which has problems such as large self-weight load and posture deviation. As a precision measuring tool, the measurement accuracy of large outer micrometers is difficult to guarantee.

[0003] like Figure 1-3 The workpiece 100 shown is a disc-shaped part with a diameter of 1200mm and a central cylinder diameter of 696mm with a tolerance of 0.02mm. Using calipers on the processing site cannot guarantee the product accuracy. Using a traditional large outside micrometer results in large measurement errors and makes it difficult to guarantee measurement accuracy due to the weight and length of the micrometer itself.

[0004] Therefore, those skilled in the art are dedicated to developing a large outside micrometer measuring adjustment bracket and its usage method, so as to effectively improve the measurement accuracy and stability of large outside micrometers in large-size workpiece measurement scenarios. Summary of the Invention

[0005] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is how to provide an adjustment bracket designed for large-diameter micrometers, suitable for measuring the outer diameter of large workpieces with a length greater than 500mm, to facilitate measurement due to the large load of the micrometer's own weight.

[0006] To achieve the above objectives, the present invention provides a large outside micrometer measuring and adjusting bracket, comprising: A base, the bottom of which defines a first plane; A connecting screw, the lower end of which is threadedly connected to and fixed to the base, and the axis of the connecting screw is perpendicular to the first plane; An adjusting nut, configured to adjust its height by threading its lower end to the upper end of a connecting screw, and to be secured to the connecting screw by a fixing screw located on the lower end of the side wall of the adjusting nut; and An upper support block is configured to be inserted into the upper end of the adjusting nut, and the adjusting nut is fixed to the upper support block by a fixing screw located on the upper end of the side wall of the adjusting nut. The upper support block has an upper support surface that defines a second surface that is parallel to the first surface.

[0007] Furthermore, the base has a connecting threaded hole, which has an internal thread.

[0008] Furthermore, the base has three ball-head feet, the bottoms of which define the first surface, which is perpendicular to the axis of the connecting threaded hole.

[0009] Furthermore, the connecting screw has an external thread that matches the internal thread of the connecting threaded hole.

[0010] Furthermore, the lower end of the adjusting nut has an internal thread that matches the external thread of the connecting screw, the upper end of the adjusting nut is a smooth hole, and a fixing screw hole is provided on the side wall of the adjusting nut.

[0011] Furthermore, the height of the external thread of the connecting screw is the same as the height of the connecting screw.

[0012] Furthermore, the height of the connecting screw is greater than the height of the base, the connecting threaded hole is located at the upper end of the base, and the height of the internal thread of the connecting threaded hole is less than the height of the base.

[0013] Furthermore, the upper support block includes a bottom post, the outer diameter of which is smaller than the inner diameter of the light hole in the adjusting nut.

[0014] Furthermore, it also includes a pressure plate, and the upper support surface has a pressure plate fixing hole. The pressure plate is configured to fix a large outside micrometer on the upper support surface by screwing a pressure plate fixing screw into the pressure plate fixing hole.

[0015] This invention also provides a method for using a large outside micrometer measuring and adjusting bracket, comprising the following steps: Step 1: Connect and secure the lower end of the connecting screw to the base thread; Step 2: Connect the lower end of the adjusting nut to the upper end of the connecting screw via thread; Step 3: Insert the upper support block into the upper end of the adjusting nut; Step 4: Assemble the three measuring and adjusting brackets in the order of steps 1 to 3. Step 5: Adjust the height of the three measuring adjustment brackets to ensure that the height difference of the three measuring adjustment brackets is within 0.02mm. After the height adjustment, use fixing screws to fix the adjusting nut to the connecting screw and the upper support block. Step 6: Place the three measuring and adjusting supports on the workpiece to be measured at one end, the middle, and the other end of the large outside micrometer, respectively; Step 7: Place the large outside micrometer on the three measuring and adjusting supports; Step 8: Use a pressure plate to fix one of the three measuring and adjusting brackets on the support surface of one end of the large outside micrometer; Step 9: Move the other end of the large outside micrometer to measure the outside diameter of the workpiece to be measured.

[0016] The beneficial effects of this invention are as follows: This invention effectively solves the stability and accuracy problems in the measurement of large outside micrometers, possessing good practicality and economy, reducing manual labor intensity, avoiding muscle strain caused by long-term operation, improving the consistency of measurement data, and reducing rework problems caused by human factors. This invention effectively improves the measurement accuracy and stability of large micrometers in the measurement of large-size workpieces.

[0017] The following will further explain the concept, specific structure, and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Attached Figure Description

[0018] Figure 1 It is a three-dimensional view of the workpiece to be measured; Figure 2 This is a top view of the workpiece to be measured; Figure 3 yes Figure 2 A cross-sectional view along the AA direction; Figure 4 This is a structural diagram of a traditional large-diameter outside micrometer; Figure 5 This is a schematic diagram of the structure of a measurement and adjustment bracket according to a preferred embodiment of the present invention; Figure 6 This is an exploded view of a measuring and adjusting bracket according to a preferred embodiment of the present invention; Figure 7 This is a schematic diagram of the base structure according to a preferred embodiment of the present invention; Figure 8 This is a schematic diagram of the connecting screw according to a preferred embodiment of the present invention; Figure 9This is a schematic diagram of the structure of the adjusting nut according to a preferred embodiment of the present invention; Figure 10 This is a schematic diagram of the upper support block according to a preferred embodiment of the present invention; Figure 11 This is a schematic diagram showing the use of placing three measuring and adjusting supports on the workpiece to be measured; Figure 12 This is a schematic diagram showing the use of a traditional large outside micrometer placed on three measuring and adjusting supports; Figure 13 This is a schematic diagram illustrating the use of a traditional large outside micrometer frame, where one end is fixed to a measuring and adjustment bracket using a pressure plate.

[0019] Among them, 10-large outside micrometer, 11-meter frame, 12-measuring rod, 13-measuring screw, 14-fixed sleeve, 15-movable graduated cylinder, 20-measuring adjustment bracket, 21-base, 22-connecting screw, 23-adjusting nut, 24-upper support block, 25-fixing screw, 26-ball head support, 27-fixing screw hole, 28-base column, 29-pressure plate, 30-pressure plate fixing screw, 100-workpiece to be measured. Detailed Implementation

[0020] The following description, with reference to the accompanying drawings, illustrates several preferred embodiments of the present invention to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0021] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and the present invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, the thickness of some components has been appropriately exaggerated in the drawings.

[0022] like Figure 4 As shown, a traditional large outside micrometer 10 includes a frame 11, a measuring rod 12, a measuring screw 13, a fixed sleeve 14, and a movable graduated cylinder 15. The measuring rod 12 is fixedly mounted on one end of the frame 11, and the other end of the frame 11 has a measuring component mounting hole. The fixed sleeve 14 is mounted on the measuring component mounting hole, and the measuring screw 13 passes through the measuring component mounting hole, the fixed sleeve 14, and is coaxially threaded to the movable graduated cylinder 15. The measuring rod 12 and the measuring screw 13 are arranged opposite each other and have flat measuring surfaces. The workpiece to be measured is placed between the measuring rod 12 and the measuring screw 13.

[0023] The fixed sleeve 14 has a horizontal line, and the movable graduated cylinder 15 has equidistant graduations on its outer circumference. The graduations on the movable graduated cylinder 15 are horizontal lines that divide the circumference into, for example, 50 equal parts. When the movable graduated cylinder 15 rotates one revolution, the measuring screw 13 advances or retracts by one pitch (e.g., 0.5 mm). Thus, when the movable graduated cylinder 15 rotates one division, it has rotated 1 / 50 of a revolution. At this point, the measuring screw 13 has moved 1 / 50 × 0.5 mm = 0.01 mm along its axis. Therefore, a value of 0.01 mm can be accurately read using a micrometer.

[0024] To address the issues of large outside micrometers relying on manual hand-held operation, which result in heavy loads and posture deviations, this invention designs a height-adjustable measuring support. The large outside micrometer is measured on the measuring support, avoiding the difficulty for operators to align it correctly due to its heavy load.

[0025] This invention adds three measuring adjustment supports (the height of the three measuring adjustment supports is adjusted to be consistent) to the traditional large outside micrometer. When measuring, one end of the large outside micrometer is fixed on the measuring adjustment support, the middle position is supported by the measuring adjustment support, and the other end is also placed on the measuring adjustment support. This ensures that the two ends of the large outside micrometer are at the same height. As long as the other end of the large outside micrometer with the movable scale cylinder is moved back and forth, the outer diameter can be accurately measured. Example 1

[0026] like Figure 5-10 As shown, this embodiment provides a large outside micrometer measuring and adjusting bracket 20, including a base 21, connecting screws 22, adjusting nuts 23 and upper support block 24.

[0027] The bottom of the base 21 defines a first plane. The lower end of the connecting screw 22 is threadedly connected to and fixed to the base 21, and the axis of the connecting screw 22 is perpendicular to the first plane. The adjusting nut 23 can be adjusted in height by threading its lower end to the upper end of the connecting screw 22, and can be fixed to the connecting screw 22 by a fixing screw 25 located at the lower end of the side wall of the adjusting nut 23. The upper support block 24 can be inserted into the upper end of the adjusting nut 23, and is fixed to the adjusting nut 23 by a fixing screw 25 located at the upper end of the side wall of the adjusting nut 23. The upper support block 24 has an upper support surface that defines a second surface, which is parallel to the first surface.

[0028] The base 21 has a threaded hole for connection, and the threaded hole has an internal thread.

[0029] In one embodiment, the base 21 has three ball-end legs 26, the bottom of which defines a first surface perpendicular to the axis of the threaded hole. The ball-end legs 26 are configured to prevent scratches on the workpiece surface.

[0030] The connecting screw 22 has an external thread that matches the internal thread of the connecting threaded hole.

[0031] The lower end of the adjusting nut 23 has an internal thread that matches the external thread of the connecting screw 22, the upper end of the adjusting nut 23 is a smooth hole, and a fixing screw hole 27 is provided on the side wall of the adjusting nut 23.

[0032] The height of the external thread of the connecting screw 22 is the same as the height of the connecting screw 22.

[0033] The height of the connecting screw 22 is greater than the height of the base 21, the connecting threaded hole is located at the upper end of the base 21, and the height of the internal thread of the connecting threaded hole is less than the height of the base 21.

[0034] The upper support block 24 includes a bottom post 28, the outer diameter of which is smaller than the inner diameter of the aperture of the adjusting nut 23.

[0035] In one embodiment, such as Figure 13 As shown, the measuring and adjusting bracket 20 also includes a pressure plate 29. A pressure plate fixing hole is provided on the upper support surface. The pressure plate 29 can be screwed into the pressure plate fixing hole by the pressure plate fixing screw 30 to fix the large outside micrometer 10 on the upper support surface.

[0036] A washer can also be provided between the pressure plate fixing screw 30 and the pressure plate 29. Example 2

[0037] like Figure 5-13 As shown, this embodiment provides a method for using a large outside micrometer measuring and adjusting bracket, including the following steps: 1. Thread the lower end of the connecting screw 22 to the base 21 and secure it. 2. Connect the lower end of the adjusting nut 23 to the upper end of the connecting screw 22 via thread; 3. Insert the upper support block 24 into the upper end of the adjusting nut 23; 4. Assemble three measuring and adjusting brackets 20 in sequence according to steps 1 to 3; 5. Adjust the height of the three measuring adjustment brackets 20 on the marble platform to ensure that the height difference of the three measuring adjustment brackets 20 is within 0.02mm. After the height adjustment, use M4 fixing screws 25 to fix the adjusting nut 23, the connecting screw 22 and the upper support block 24. 6. Place the three measuring adjustment supports 20 on the workpiece 100 to be measured at one end, the middle, and the other end of the large outside micrometer 10, respectively. Figure 11 As shown; 7. Place the large outside micrometer 10 on the three measuring and adjusting supports 20, such as... Figure 12 As shown; 8. For a large outside micrometer 10, use a pressure plate 29 to fix one of the three measuring and adjusting brackets to its upper support surface, such as... Figure 13 As shown; 9. The operator only needs to move the other end of the large outside micrometer 10 back and forth to measure the maximum outer diameter of the workpiece 100 to be measured.

[0038] As can be seen from the above embodiments, the present invention effectively solves the stability and accuracy problems of large outside micrometer measurement, possesses good practicality and economy, reduces manual labor intensity, avoids muscle strain caused by long-term operation, improves the consistency of measurement data, and reduces rework problems caused by human factors. It effectively improves the measurement accuracy and stability of large outside micrometers in large-size workpiece measurement scenarios.

[0039] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A large outside micrometer measuring and adjusting bracket, characterized in that, include: A base, the bottom of which defines a first plane; A connecting screw, the lower end of which is threadedly connected to and fixed to the base, and the axis of the connecting screw is perpendicular to the first plane; An adjusting nut is configured to adjust the height of the adjusting nut by threading the lower end of the adjusting nut to the upper end of the connecting screw, and to fix the adjusting nut to the connecting screw by a fixing screw located at the lower end of the side wall of the adjusting nut. as well as An upper support block is configured to be inserted into the upper end of the adjusting nut, and the adjusting nut is fixed to the upper support block by a fixing screw located on the upper end of the side wall of the adjusting nut. The upper support block has an upper support surface that defines a second surface that is parallel to the first surface.

2. The large outside micrometer measuring and adjusting bracket according to claim 1, characterized in that, The base has a threaded connection hole with an internal thread.

3. The large outside micrometer measuring and adjusting bracket according to claim 2, characterized in that, The base has three ball-head feet, the bottoms of which define the first surface, which is perpendicular to the axis of the connecting threaded hole.

4. The large outside micrometer measuring and adjusting bracket according to claim 2, characterized in that, The connecting screw has an external thread that matches the internal thread of the connecting threaded hole.

5. The large outside micrometer measuring and adjusting bracket according to claim 4, characterized in that, The lower end of the adjusting nut has an internal thread that matches the external thread of the connecting screw, the upper end of the adjusting nut is a smooth hole, and a fixing screw hole is provided on the side wall of the adjusting nut.

6. The large outside micrometer measuring and adjusting bracket according to claim 4, characterized in that, The height of the external thread of the connecting screw is the same as the height of the connecting screw.

7. The large outside micrometer measuring and adjusting bracket according to claim 4, characterized in that, The height of the connecting screw is greater than the height of the base, the connecting threaded hole is located at the upper end of the base, and the height of the internal thread of the connecting threaded hole is less than the height of the base.

8. The large outside micrometer measuring and adjusting bracket according to claim 5, characterized in that, The upper support block includes a bottom column, the outer diameter of which is smaller than the inner diameter of the aperture of the adjusting nut.

9. The large outside micrometer measuring and adjusting bracket according to claim 1, characterized in that, It also includes a pressure plate, and the upper support surface has a pressure plate fixing hole. The pressure plate is configured to fix a large outside micrometer on the upper support surface by screwing a pressure plate fixing screw into the pressure plate fixing hole.

10. A method for using a measuring and adjusting bracket for a large outside micrometer, characterized in that, Includes the following steps: Step 1: Connect and secure the lower end of the connecting screw to the base thread; Step 2: Connect the lower end of the adjusting nut to the upper end of the connecting screw via thread; Step 3: Insert the upper support block into the upper end of the adjusting nut; Step 4: Assemble the three measuring and adjusting brackets in the order of steps 1 to 3. Step 5: Adjust the height of the three measuring adjustment brackets to ensure that the height difference of the three measuring adjustment brackets is within 0.02mm. After the height adjustment, use fixing screws to fix the adjusting nut to the connecting screw and the upper support block. Step 6: Place the three measuring and adjusting supports on the workpiece to be measured at one end, the middle, and the other end of the large outside micrometer, respectively; Step 7: Place the large outside micrometer on the three measuring and adjusting supports; Step 8: Use a pressure plate to fix one of the three measuring and adjusting brackets on the support surface of one end of the large outside micrometer; Step 9: Move the other end of the large outside micrometer to measure the outside diameter of the workpiece to be measured.

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