Contact type roundness measuring device

Abstract

The utility model belongs to the field of roundness measuring devices, and particularly relates to a contact type roundness measuring device which comprises a bottom plate, a linear guide rail pair is fixedly connected to the top of the bottom plate, a fixed seat is slidably connected to the top of the linear guide rail pair, a lifting rod is fixedly connected to the top of the fixed seat, a V-shaped iron is fixedly connected to the top of the bottom plate, and the V-shaped iron is fixedly connected to the top of the bottom plate. One end of the lifting rod is fixedly connected with a gauge stand, the interior of the gauge stand is fixedly connected with a dial indicator, the dial indicator is located above the V-shaped iron, and a limiting assembly is arranged on one side of the bottom plate; during measurement, a product is placed on the V-shaped iron, the height of the dial indicator is adjusted through the lifting rod, the dial indicator is made to make contact with the leveled outer diameter, then the product is rotated for a circle, the scale change value of the dial indicator is visually observed, and therefore the roundness error of the product can be rapidly and accurately measured; the roundness measuring efficiency is improved, and manual measuring errors are avoided.

Description

Technical Field

[0001] The utility model relates to the field of roundness measuring devices, in particular to a contact type roundness measuring device. Background Art

[0002] In the manufacturing industry, when producing some workpieces, it is necessary to check whether the produced workpieces are qualified. Some products have circular cross-sections. For the measurement of such products, it is necessary to use a roundness measuring device to measure its roundness to check whether it is qualified.

[0003] When measuring the roundness of a product, a micrometer is usually used to distribute the measurement of a circle of the product to obtain the maximum and minimum error values ​​as the roundness error of the product. However, in this measurement process, due to different selected measuring points and manual measurement gesture errors, it is often impossible to accurately measure the maximum and minimum values. The accuracy is not high, and multiple measurements are required. The measurement rate is too slow, resulting in an inability to accurately judge the roundness error, affecting the result of the roundness measurement; resulting in low detection efficiency and low accuracy. Therefore, a contact roundness measuring device is proposed to address the above problems. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the utility model solves the problem that when measuring the roundness of a product, a micrometer is usually used to distribute the measurement of a product in a circle and the maximum and minimum error values ​​are taken as the roundness error of the product. However, in this measurement process, due to different selected measuring points and manual measurement gesture errors, the maximum and minimum values ​​cannot be accurately measured, the accuracy is not high, multiple measurements are required, and the measurement rate is too slow, resulting in the inability to accurately judge the roundness error, affecting the result of the roundness measurement. The utility model proposes a contact roundness measuring device.

[0005] The technical solution adopted by the utility model to solve its technical problem is: a contact roundness measuring device described in the utility model includes a base plate, the top of the base plate is fixedly connected to a linear guide pair, the top of the linear guide pair is slidably connected to a fixed seat, the top of the fixed seat is fixedly connected to a lifting rod, the top of the base plate is fixedly connected to a V-shaped iron, one end of the lifting rod is fixedly connected to a table seat, the inside of the table seat is fixedly connected to a micrometer, the micrometer is located above the V-shaped iron, and a limiting component is arranged on one side of the base plate.

[0006] Preferably, the limiting assembly comprises a movable seat, the top of the movable seat is rotatably connected to a pressure rod, one side of the movable seat is fixedly connected to a tension spring, and the tension spring is fixedly connected to the pressure rod.

[0007] Preferably, the internal thread of the movable seat is connected with a locking screw, and the movable seat is connected to the base plate via the locking screw.

[0008] Preferably, one end of the pressure rod is rotatably connected to a movable rotor.

[0009] Preferably, an optical axis fixing piece is fixedly connected to one side of the base plate, and the linear guide pair is fixedly connected to the base plate via the optical axis fixing piece.

[0010] Preferably, a rotating spline sleeve is fixedly connected to one side of the V-shaped iron.

[0011] The utility model is beneficial in that:

[0012] 1. When measuring, the utility model places the product on the V-shaped iron, and then adjusts the height of the dial gauge through the lifting rod so that the dial gauge contacts the flattened outer diameter, and then rotates the product for one circle to visually observe the change in the dial gauge scale. In this way, the roundness error of the product can be measured quickly and accurately; the efficiency of measuring roundness is improved, and human measurement errors are avoided;

[0013] 2. When placing a product, the utility model presses down one end of the pressure rod. As the pressure rod rotates on the moving seat, the other end of the pressure rod is lifted. At this time, the tension spring is stretched. Then the product is placed on the V-shaped iron. The pressure rod is then released. At this time, the tension spring recovers its deformation and pulls the raised end of the pressure rod downward, thereby pressing the product to prevent the workpiece from falling off the V-shaped iron. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model from another direction;

[0017] Figure 3 It is a structural schematic diagram of the limit assembly of the utility model.

[0018] In the figure: 1. Base plate; 2. Linear guide pair; 3. Fixed seat; 4. Lifting rod; 5. V-shaped iron; 6. Base; 7. Micrometer; 8. Moving seat; 9. Locking screw; 10. Pressure rod; 11. Tension spring; 12. Movable rotor; 13. Optical axis fixing piece; 14. Rotating spline sleeve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 3 As shown, a contact type roundness measuring device comprises a bottom plate 1, a linear guide pair 2 is fixedly connected to the top of the bottom plate 1, a fixed seat 3 is slidably connected to the top of the linear guide pair 2, a lifting rod 4 is fixedly connected to the top of the fixed seat 3, a V-shaped iron 5 is fixedly connected to the top of the bottom plate 1, a gauge seat 6 is fixedly connected to one end of the lifting rod 4, a micrometer 7 is fixedly connected to the inside of the gauge seat 6, and the micrometer 7 is located above the V-shaped iron 5, and a limit assembly is arranged on one side of the bottom plate 1;

[0021] During operation and measurement, the product is placed on the V-shaped iron 5, and then the height of the micrometer 7 is adjusted by the lifting rod 4 so that the micrometer 7 contacts the flattened outer diameter, and then the product is rotated for one circle to visually observe the scale change value of the micrometer 7, so that the roundness error of the product can be measured quickly and accurately; the efficiency of measuring the roundness is improved, and human measurement errors are avoided, and the fixed seat 3 can slide on the linear guide pair 2, which facilitates the movement of the micrometer 7.

[0022] Further, the limiting assembly includes a moving seat 8, the top of the moving seat 8 is rotatably connected to a pressure rod 10, one side of the moving seat 8 is fixedly connected to a tension spring 11, and the tension spring 11 is fixedly connected to the pressure rod 10;

[0023] During operation, when placing the product, one end of the pressure rod 10 is pressed down. Since the pressure rod 10 rotates on the moving seat 8, the other end of the pressure rod 10 is lifted. At this time, the tension spring 11 is stretched, and then the product is placed on the V-shaped iron 5. The pressure rod 10 is then released. At this time, the tension spring 11 recovers its deformation and pulls the raised end of the pressure rod 10 down, so that the product will be pressed down to prevent the workpiece from falling from the V-shaped iron 5.

[0024] Furthermore, the internal thread of the movable seat 8 is connected with a locking screw 9, and the movable seat 8 is connected to the base plate 1 through the locking screw 9;

[0025] During operation, the movable seat 8 can be connected to the base plate 1 through the locking screws 9, and the position of the movable seat 8 can be adjusted.

[0026] Further, one end of the pressure rod 10 is rotatably connected to a movable rotor 12;

[0027] During operation, the movable rotor 12 is provided so that the friction force when the pressure rod 10 presses the workpiece will not be so large, so that the workpiece can be rotated more easily.

[0028] Furthermore, an optical axis fixing member 13 is fixedly connected to one side of the base plate 1, and the linear guide pair 2 is fixedly connected to the base plate 1 through the optical axis fixing member 13;

[0029] During operation, the linear guide pair 2 can be firmly fixed on the base plate 1 through the optical axis fixing member 13 .

[0030] Furthermore, a rotating spline sleeve 14 is fixedly connected to one side of the V-shaped iron 5;

[0031] During operation, the rotation of the product on the V-shaped iron 5 is facilitated by the provided rotating spline sleeve 14 .

[0032] Working principle: When measuring, place the product on the V-shaped iron 5, and then adjust the height of the micrometer 7 through the lifting rod 4 so that the micrometer 7 contacts the flattened outer diameter, and then rotate the product for one circle to visually observe the scale change value of the micrometer 7. In this way, the roundness error of the product can be measured quickly and accurately; the efficiency of measuring roundness is improved and human measurement errors are avoided. When placing the product, press down one end of the pressure rod 10. Since the pressure rod 10 rotates on the moving seat 8, the other end of the pressure rod 10 is lifted. At this time, the tension spring 11 is stretched, and then the product is placed on the V-shaped iron 5. Then the pressure rod 10 is released. At this time, the tension spring 11 recovers its deformation and pulls the raised end of the pressure rod 10 down, which will press the product to prevent the workpiece from falling from the V-shaped iron 5.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A contact roundness measuring device, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to a linear guide pair (2), the top of the linear guide pair (2) is slidably connected to a fixed seat (3), the top of the fixed seat (3) is fixedly connected to a lifting rod (4), the top of the base plate (1) is fixedly connected to a V-shaped iron (5), one end of the lifting rod (4) is fixedly connected to a gauge seat (6), the inside of the gauge seat (6) is fixedly connected to a micrometer (7), the micrometer (7) is located above the V-shaped iron (5), and a limit assembly is provided on one side of the base plate (1).

2. A contact type roundness measuring device according to claim 1, characterized in that: The limiting assembly comprises a movable seat (8), the top of the movable seat (8) is rotatably connected to a pressure rod (10), one side of the movable seat (8) is fixedly connected to a tension spring (11), and the tension spring (11) is fixedly connected to the pressure rod (10).

3. A contact type roundness measuring device according to claim 2, characterized in that: The internal thread of the movable seat (8) is connected with a locking screw (9), and the movable seat (8) is connected to the base plate (1) via the locking screw (9).

4. A contact type roundness measuring device according to claim 2, characterized in that: One end of the pressure rod (10) is rotatably connected to a movable rotor (12).

5. The contact type roundness measuring device according to claim 1, characterized in that: An optical axis fixing member (13) is fixedly connected to one side of the base plate (1), and the linear guide rail pair (2) is fixedly connected to the base plate (1) via the optical axis fixing member (13).

6. A contact type roundness measuring device according to claim 1, characterized in that: A rotating spline sleeve (14) is fixedly connected to one side of the V-shaped iron (5).

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