Inner circle measuring instrument

Abstract

The utility model discloses an inner circle measuring instrument. The inner circle measuring instrument comprises a linear measuring path, a fixed measuring module and a movable measuring module which are arranged on the linear measuring path, a reverse thrust positioning module which is arranged close to the fixed measuring module, and a measuring meter which is abutted against and contacted with the movable measuring module, the fixed measuring module comprises a fixed measuring column fixed at one end of the linear measuring path; the movable measuring module comprises a movable measuring rod capable of sliding along a linear measuring path and a first sliding assembly used for installing the movable measuring rod. The first sliding assembly is used for driving the movable measuring column to be close to or away from the fixed measuring column; the reverse thrust positioning module is used for enabling the fixed measuring column and the movable measuring column to be located at the two ends of the diameter of the inner circle of the product. According to the utility model, by arranging the reverse thrust positioning module, the movable measuring module and the fixed measuring module, the fixed measuring column and the movable measuring column are automatically positioned at the two ends of the diameter of the inner circle in the measuring process, the operation is simple, the device can be used for measuring the inner circles of various product specifications, and the measuring efficiency is improved while the measuring precision is ensured.

Description

Technical Field

[0001] This utility model relates to the field of measuring instrument technology, and in particular to an internal circle measuring instrument. Background Technology

[0002] With the continuous development of the hardware industry, the requirements for product quality and production efficiency are increasing, and the accuracy and efficiency of inner circle measurement of hardware products have become particularly important.

[0003] Currently, calipers are the primary method for measuring the inner diameter of hardware products. However, this method has several drawbacks. First, the operator's technique significantly influences the measurement results, leading to errors. Second, calipers have limited accuracy, failing to meet the high-precision measurement requirements of modern automated mass production of hardware products. Furthermore, in assembly line production, caliper measurement cannot be performed quickly and efficiently, severely impacting production efficiency and product quality stability. Utility Model Content

[0004] The purpose of this invention is to provide an internal circle measuring instrument. By setting up a reverse positioning module, a movable measuring module, and a fixed measuring module, the fixed measuring column and the movable measuring column are automatically positioned at both ends of the inner circle diameter during the measurement process. The instrument is simple to operate and can be used for internal circle measurement of various product specifications. It improves measurement efficiency while ensuring measurement accuracy.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] An inner circle measuring instrument includes a straight measuring path, a fixed measuring module and a movable measuring module located on the straight measuring path, a reverse positioning module installed near the fixed measuring module, and a measuring instrument in contact with the movable measuring module; the fixed measuring module includes a fixed measuring column fixed to one end of the straight measuring path; the movable measuring module includes a movable measuring column that can slide along the straight measuring path, and a first sliding assembly for mounting the movable measuring column; the first sliding assembly is used to move the movable measuring column closer to or away from the fixed measuring column; the reverse positioning module is used to position the fixed measuring column and the movable measuring column at both ends of the diameter of the inner circle of the product.

[0007] Preferably, the reverse positioning module includes a reverse positioning rod on each of the two opposite outer sides of the fixed measuring column, and a reverse positioning seat for mounting the reverse positioning rod; the straight measurement path is perpendicular to the line connecting the centers of the two reverse positioning rods; the distance between the center of the fixed measuring column and the center of one of the reverse positioning rods is equal to the distance between the center of the fixed measuring column and the center of the other reverse positioning rod; the reverse positioning seat can move in a direction parallel to the straight measurement path.

[0008] Preferably, the measuring instrument is located on the side of the fixed measuring module away from the movable measuring module; the first sliding component is provided with a stroke measuring rod, and the length direction of the stroke measuring rod is parallel to the straight measurement path; the measuring probe of the measuring instrument abuts against the end of the stroke measuring rod.

[0009] Preferably, the measuring probe of the measuring instrument is provided with an elastic element; the measuring probe of the measuring instrument is elastically abutted against the stroke measuring rod via the elastic element.

[0010] Preferably, the inner circle measuring instrument further includes a panel; a measuring sliding slot is provided in the middle of the panel corresponding to the straight measuring path, and both the fixed measuring column and the movable measuring column are arranged through the measuring sliding slot; a reverse sliding slot is provided in the panel corresponding to each reverse positioning rod, and the reverse positioning rod is arranged through the reverse sliding slot; the reverse sliding slot is provided along the length direction of the measuring sliding slot.

[0011] Preferably, the panel is connected to a height adjustment module; the height adjustment module includes a lifting slide rail, a lifting slider slidably connected to the lifting slide rail, and a lifting adjustment rod for adjusting the up and down movement of the lifting slider; the lifting slider is detachably connected to the panel.

[0012] Preferably, the first sliding assembly includes a first slide rail, a movable measuring seat slidably connected to the first slide rail, and a sliding handle installed on one side of the movable measuring seat; the stroke measuring rod is installed on one end face of the movable measuring seat.

[0013] Preferably, the fixed measuring module further includes a fixed measuring seat for mounting the fixed measuring column; the fixed measuring seat has a reverse thrust movable hole, through which the reverse thrust positioning seat is installed.

[0014] Preferably, the inner circle measuring instrument further includes a base plate and a base located at the top of one end of the base plate; the measuring instrument is mounted on the top of the other end of the base plate via a base; the movable measuring module, the fixed measuring module, and the reverse positioning module are mounted on the top of the base.

[0015] Preferably, a reverse thrust handle is provided on one side of the reverse thrust positioning seat.

[0016] By adopting the above solution, the beneficial effects of this utility model are:

[0017] This utility model provides an internal circle measuring instrument. By setting up a reverse positioning module, a movable measuring module, and a fixed measuring module, the fixed measuring column and the movable measuring column are automatically positioned at both ends of the inner circle diameter during the measurement process. It is simple to operate and can be used to measure the inner circle of various product specifications. While ensuring measurement accuracy, it improves measurement efficiency, has strong versatility, and avoids errors caused by measurement methods and readings. It can meet the requirements of large-scale, automated, and standardized production of hardware products. Attached Figure Description

[0018] Figure 1 This is a front-view perspective view of the present invention;

[0019] Figure 2 This is a rear-view perspective view of the present invention;

[0020] Figure 3 This is a schematic diagram of the front view structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure from the left perspective of this utility model;

[0022] Figure 5 This is a schematic diagram showing that the fixed measuring column and the movable measuring column of this utility model are located at both ends of the same diameter of the inner circle;

[0023] The following are explanations of the labels in the attached diagram:

[0024] 1—Measuring gauge, 2—Fixed measuring column,

[0025] 3—Movement gauge, 4—Reverse positioning rod,

[0026] 5—Reverse positioning seat, 6—Stroke measuring rod,

[0027] 7—Panel, 8—Measuring sliding groove hole,

[0028] 9—Reverse sliding groove hole; 10—Lifting slide rail;

[0029] 11—Lifting slider, 12—Lifting adjustment rod,

[0030] 13—First slide rail, 14—Mobility seat,

[0031] 15—Sliding handle, 16—Fixed measuring seat,

[0032] 17—Base plate, 18—Support plate

[0033] 19—Reverse push handle, 20—Measuring probe,

[0034] 21—Product. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] Reference Figures 1 to 5 As shown, this utility model provides an inner diameter measuring instrument, mainly used for measuring the inner diameter of hardware products. It includes a straight measuring path, a fixed measuring module and a movable measuring module located on the straight measuring path, a reverse positioning module installed near the fixed measuring module, and a measuring gauge 1 in contact with the movable measuring module. The fixed measuring module includes a fixed measuring column 2 fixed to one end of the straight measuring path. The movable measuring module includes a movable measuring column 3 that can slide along the straight measuring path, and a first sliding assembly for mounting the movable measuring column 3. The first sliding assembly is used to move the movable measuring column 3 closer to or away from the fixed measuring column 2. Specifically, the fixed measuring column 2 and the movable measuring column 3 are made of tungsten steel. On the straight measuring path, the center of the fixed measuring column 2 and the center of the movable measuring column 3 cannot deviate by more than 0.005 mm to ensure that during measurement, the fixed measuring column 2 and the movable measuring column 3 are located on the same diameter of the inner circle of the product 21.

[0039] The reverse positioning module is used to position the fixed measuring column 2 and the movable measuring column 3 at both ends of the inner diameter of the product 21. The reverse positioning module includes a reverse positioning rod 4 on each of the two opposite outer sides of the fixed measuring column 2, and a reverse positioning seat 5 for mounting the reverse positioning rods 4. The straight measurement path is perpendicular to the line connecting the centers of the two reverse positioning rods 4. The distance between the center of the fixed measuring column 2 and the center of one of the reverse positioning rods 4 is equal to the distance between the center of the fixed measuring column 2 and the center of the other reverse positioning rod 4. The reverse positioning seat 5 can move in a direction parallel to the straight measurement path. A reverse handle 19 is provided on one side of the reverse positioning seat 5, which can be used to reset the reverse positioning rods 4 after measurement.

[0040] The function of the reverse positioning rod 4 is to automatically position the fixed measuring column 2 and the movable measuring column 3 at both ends of the inner circle diameter of the product 21 during measurement, so as to avoid the line connecting the fixed measuring column 2 and the movable measuring column 3 not passing through the center of the inner circle of the product 21 (i.e., not the diameter of the inner circle of the product 21) during measurement.

[0041] The measuring instrument 1 is located on the side of the fixed measuring module away from the movable measuring module; the first sliding component is provided with a stroke measuring rod 6, and the length direction of the stroke measuring rod 6 is parallel to the straight measuring path; the measuring probe 20 of the measuring instrument 1 abuts against the end of the stroke measuring rod 6.

[0042] The measuring probe 20 of the measuring instrument 1 is equipped with an elastic element; the measuring probe 20 of the measuring instrument 1 is elastically abutted against the stroke measuring rod 6 via the elastic element. Within the measuring range of the inner circle measuring instrument, the measuring probe 20 of the measuring instrument 1 remains in contact with the stroke measuring rod 6, and the elastic element is always kept in a compressed state.

[0043] The inner circle measuring instrument also includes a panel 7; a measuring sliding slot 8 is provided in the middle of the panel 7 corresponding to the straight measuring path, and the fixed measuring column 2 and the movable measuring column 3 are arranged through the measuring sliding slot 8; a reverse sliding slot 9 is provided in the panel 7 for each reverse positioning rod 4, and the reverse positioning rod 4 is arranged through the reverse sliding slot 9; the reverse sliding slot 9 is provided along the length direction of the measuring sliding slot 8.

[0044] The panel 7 is connected to a height adjustment module; the height adjustment module includes a lifting slide rail 10, a lifting slider 11 slidably connected to the lifting slide rail 10, and a lifting adjustment rod 12 for adjusting the up and down movement of the lifting slider 11; the lifting slider 11 is detachably connected to the panel 7.

[0045] The first sliding assembly includes a first slide rail 13, a movable measuring seat 14 slidably connected to the first slide rail 13, and a sliding handle 15 installed on one side of the movable measuring seat 14; the stroke measuring rod 6 is installed on one end face of the movable measuring seat 14.

[0046] The fixed measurement module also includes a fixed measuring seat 16 for mounting the fixed measuring column 2; the fixed measuring seat 16 has a reverse thrust movable hole, through which the reverse thrust positioning seat 5 is installed. During the reverse thrust positioning process, the reverse thrust positioning seat 5 can slide through the reverse thrust movable hole, allowing the reverse thrust positioning rod 4 to move along a measurement path parallel to a straight line.

[0047] The inner circle measuring instrument also includes a base plate 17 and a base 18 located at the top of one end of the base plate 17; the measuring gauge 1 is mounted on the top of the other end of the base plate 17 via a gauge base; specifically, the measuring gauge 1 is a high-precision wire gauge. The movable measuring module, the fixed measuring module, and the reverse positioning module are mounted on the top of the base 18.

[0048] Please continue to refer to Figure 3 The working process of this utility model is as follows:

[0049] 1) The movable measuring seat 14 is moved by sliding handle 15, so that the movable measuring column 3 moves along the straight measurement path in the direction B (closer to the fixed measuring column 2);

[0050] 2) Place the product on panel 7, with the movable measuring column 3, the fixed measuring column 2, and the two reverse positioning rods 4 placed in the inner circle of product 21;

[0051] 3) The movable measuring seat 14 is moved by sliding handle 15, so that the movable measuring column 3 moves along the straight measurement path in direction A (away from the fixed measuring column 2);

[0052] 4) When the inner circular sidewall of product 21 contacts the reverse positioning rod 4, push product 21 to continue moving along the straight measurement path in direction A until the inner circle of product 21 is simultaneously stopped by the fixed measuring column 2 and the two reverse positioning rods 4.

[0053] 5) Move the movable measuring seat 14 by sliding the handle 15, so that the movable measuring column 3 abuts against the inner circular side wall of the product 21. Please continue to refer to... Figure 5 At this time, the fixed measuring column 2 and the movable measuring column 3 are automatically positioned at both ends of the diameter of the inner circle of product 21;

[0054] 6) Read the inner diameter data of product 21 from the measuring table 1.

[0055] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the utility model and are not intended to limit the implementation of this utility model. For those skilled in the art, various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An inside diameter measuring instrument, characterized by, The device includes a straight measurement path, a fixed measurement module and a movable measurement module located on the straight measurement path, a reverse positioning module installed near the fixed measurement module, and a measuring instrument in contact with the movable measurement module. The fixed measurement module includes a fixed measuring column fixed to one end of the straight measurement path. The movable measurement module includes a movable measuring column that can slide along the straight measurement path, and a first sliding assembly for mounting the movable measuring column. The first sliding assembly is used to move the movable measuring column closer to or away from the fixed measuring column. The reverse positioning module is used to position the fixed measuring column and the movable measuring column at both ends of the diameter of the inner circle of the product.

2. The inside diameter measuring instrument of claim 1, wherein, The reverse positioning module includes a reverse positioning rod on each of the two opposite outer sides of the fixed measuring column, and a reverse positioning seat for mounting the reverse positioning rods; the straight measurement path is perpendicular to the line connecting the centers of the two reverse positioning rods; the distance between the center of the fixed measuring column and the center of one of the reverse positioning rods is equal to the distance between the center of the fixed measuring column and the center of the other reverse positioning rod; the reverse positioning seat can move in a direction parallel to the straight measurement path.

3. The inside diameter gage of claim 1, wherein, The measuring instrument is located on the side of the fixed measuring module away from the movable measuring module; the first sliding component is provided with a stroke measuring rod, and the length direction of the stroke measuring rod is parallel to the straight measurement path; the measuring probe of the measuring instrument abuts against the end of the stroke measuring rod.

4. The inside diameter measuring instrument of claim 3, wherein, The measuring probe of the measuring instrument is equipped with an elastic element; the measuring probe of the measuring instrument is elastically abutted against the travel measuring rod through the elastic element.

5. The inside diameter gage of claim 2 wherein, The inner circle measuring instrument also includes a panel; a measuring sliding slot is provided in the middle of the panel corresponding to the straight measuring path, and both the fixed measuring column and the movable measuring column are arranged through the measuring sliding slot; a reverse sliding slot is provided in the panel for each reverse positioning rod, and the reverse positioning rod is arranged through the reverse sliding slot; the reverse sliding slot is provided along the length direction of the measuring sliding slot.

6. The inside diameter measuring instrument of claim 5, wherein, The panel is connected to a height adjustment module; the height adjustment module includes a lifting slide rail, a lifting slider slidably connected to the lifting slide rail, and a lifting adjustment rod for adjusting the up and down movement of the lifting slider; the lifting slider is detachably connected to the panel.

7. The inside diameter gage of claim 3 wherein, The first sliding assembly includes a first slide rail, a movable measuring seat slidably connected to the first slide rail, and a sliding handle installed on one side of the movable measuring seat; the stroke measuring rod is installed on one end face of the movable measuring seat.

8. The inside diameter gage of claim 2 wherein, The fixed measurement module also includes a fixed measuring seat for mounting the fixed measuring column; the fixed measuring seat has a reverse thrust movable hole, through which the reverse thrust positioning seat is installed.

9. The inside diameter gage of claim 1 wherein, The inner circle measuring instrument also includes a base plate and a base located at the top of one end of the base plate; the measuring instrument is mounted on the top of the other end of the base plate via a base; the movable measuring module, the fixed measuring module, and the reverse positioning module are mounted on the top of the base.

10. The inside diameter gage of claim 2 wherein, A reverse thrust handle is provided on one side of the reverse thrust positioning seat.

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