Inner and outer diameter detection tool

Abstract

The utility model discloses an internal and external diameter detection tool, which belongs to the technical field of measurement and detection, and comprises a working table, two groups of connecting plates are arranged at the top of the working table, an adjusting assembly is arranged on one sides, close to each other, of the two groups of connecting plates, the adjusting assembly comprises two groups of short plates, screw rods are rotatably mounted in the two groups of short plates, and the two groups of short plates are connected with the screw rods. The outer side of the lead screw is in threaded connection with a vernier caliper, adjustment of the vernier caliper is achieved, internal and external straight detection and measurement of workpieces of different specifications and sizes are facilitated, the whole process does not need to replace a measuring tool or re-adjust the overall structure of the tool, operation is more convenient, and the flexibility of the device is greatly improved. Workpieces of different specifications and sizes can be effectively fixed, the workpieces can be accurately positioned at preset measurement positions on the workbench, and errors of internal and external diameter data measured by a vernier caliper due to deviation or inclination of the workpieces in the measurement process are avoided.

Description

Technical Field

[0001] This utility model relates to the field of measurement and testing technology, and in particular to a tooling for measuring internal and external diameters. Background Technology

[0002] In modern industrial manufacturing, the production scale of various workpieces is massive and their specifications are diverse. Whether in machinery manufacturing, automobile production, aerospace, or electronic equipment manufacturing, industries all require precise dimensional inspection of a large number of workpieces of different sizes and specifications, with the inspection of internal and external diameters being particularly critical. For example, in machinery manufacturing, the external diameter accuracy of shaft parts directly affects their fit accuracy with other components, while the internal diameter of various pipes, sleeves, etc., is related to their applicability and functionality in assembly. With the continuous development of industrial technology, the precision requirements of products are becoming increasingly stringent, placing higher demands on the accuracy and efficiency of workpiece internal and external diameter inspection. Traditional internal and external diameter inspection fixtures are usually designed for specific types of workpieces or specific inspection tasks, and their overall structure is relatively fixed. When encountering workpieces of different sizes that need to be inspected, not only do the measuring tools need to be readjusted, but the overall structure of the fixture may also need to be modified or some components replaced, making the inspection process extremely cumbersome and inefficient. Traditional fixing methods often use simple clamps, such as vises and V-blocks. These clamps are usually designed for workpieces of specific sizes or shapes and have poor versatility. When inspecting workpieces of different sizes, it is often necessary to frequently change fixtures or make complex adjustments to the fixtures. This not only increases the complexity of the operation, but also easily leads to inaccurate positioning during the replacement and adjustment process. Therefore, we propose a fixture for measuring internal and external diameters to solve this problem. Utility Model Content

[0003] The purpose of this invention is to provide a tooling for detecting internal and external diameters, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A fixture for measuring internal and external diameters includes: a worktable, with two sets of connecting plates on the top of the worktable, and an adjustment assembly on the side of the two sets of connecting plates that are close to each other. The adjustment assembly includes: two sets of short plates, with lead screws rotatably mounted inside the two sets of short plates, and a vernier caliper threaded to the outside of the lead screws; a rotating shaft fixedly mounted on one side of each set of short plates, and each set of rotating shafts rotatably mounted inside a corresponding connecting plate; the rotating shaft on the left side extends through to one side of the connecting plate, and a second gear is fixedly mounted on the outside of the rotating shaft; a first gear is rotatably mounted on one side of the connecting plate on the left side, and the first gear meshes with the second gear; a fixing assembly is provided inside the worktable, and the fixing assembly includes: a rotating plate, with two sets of connecting rods hinged to the top of the rotating plate, a sliding plate hinged to one end of each set of connecting rods, a connecting rod fixedly mounted on the top of each set of sliding plates, and an arc-shaped clamping plate fixedly mounted on the top of each set of connecting rods; the two arc-shaped clamping plates are located at the bottom of the vernier caliper.

[0006] Preferably, four sets of electric telescopic rods are fixedly installed on the top of the workbench, and the output ends of the two sets of electric telescopic rods located on the same side are respectively fixedly connected to the corresponding connecting plates.

[0007] Preferably, a second motor is fixedly installed on one side of the short plate on the right side, and the output shaft of the second motor is fixedly connected to a lead screw. A first motor is fixedly installed on one side of the connecting plate on the left side, and the output shaft of the first motor is fixedly connected to a gear.

[0008] Preferably, an electric push rod is fixedly installed on one side of the workbench, and the output end of the electric push rod is fixedly connected to the slide plate on the right side.

[0009] Preferably, two sets of guide rods are slidably installed inside the two sets of slide plates. The two ends of the two sets of guide rods are respectively fixedly connected to the inner walls of the two sides of the workbench. The rotating plate is rotatably installed on the bottom inner wall of the workbench. Two sets of sliding grooves are opened on the top of the workbench. The two sets of connecting rods are slidably installed inside the corresponding sliding grooves.

[0010] Preferably, a slider is fixedly installed on one side of the vernier caliper, and a limit rod is slidably installed inside the slider. The two ends of the limit rod are respectively fixedly connected to the corresponding short plates.

[0011] In this utility model, an inner and outer diameter measuring fixture is provided, comprising an adjustment component, gear one, gear two, motor one, electric telescopic rod, connecting plate, and rotating shaft. Motor two drives a lead screw to rotate, which in turn moves an outer vernier caliper. Once the vernier caliper has moved to a suitable distance, the electric telescopic rod is driven to move the connecting plate up and down to adjust the distance between the vernier caliper and the workpiece. One side of the vernier caliper's measuring blade abuts against the outer diameter of the workpiece, while the other side's measuring blade abuts against the other side of the workpiece. The outer diameter of the workpiece is then measured based on the reading on the vernier caliper. Motor one drives gear one to rotate, which in turn drives gear two to rotate, causing the measuring blade on the other side of the back panel to abut against the inner wall of the workpiece. This allows for the measurement of the workpiece's inner diameter. This adjustment of the vernier caliper facilitates the measurement of the inner and outer diameters of workpieces of different sizes. The entire process requires no replacement of measuring tools or readjustment of the fixture's overall structure, making operation more convenient and greatly increasing the flexibility of the device.

[0012] In this invention, a fixture for measuring inner and outer diameters is provided, comprising a fixing component, an electric push rod, and a sliding groove. The workpiece whose inner and outer diameters need to be measured is placed on the top of the worktable. The electric push rod is then driven, causing the right-side sliding plate to move. A connecting rod hinged to one side of the sliding plate and a rotating plate hinged to the other side of the connecting rod cause the left-side sliding plate to move, simultaneously rotating the rotating plate. This causes the connecting rods on both sides of the rotating plate to move the corresponding sliding plates and connecting rods relative to each other, allowing the two sets of arc-shaped clamping plates to move closer and further apart. This facilitates effective fixing of workpieces of different sizes and accurately positions the workpiece at the predetermined measurement position on the worktable, preventing workpiece offset or tilting during measurement, which could lead to errors in the inner and outer diameter data measured by the vernier caliper and reduce the accuracy of the measurement. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a tooling for detecting inner and outer diameters proposed in this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of an inner and outer diameter detection fixture proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the fixing component structure proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of the adjustment component structure proposed in this utility model.

[0017] In the diagram: 1. Workbench; 2. Electric telescopic rod; 3. Connecting plate; 4. Vernier caliper; 5. Adjustment assembly; 501. Motor II; 502. Lead screw; 503. Slider; 504. Limiting rod; 505. Short plate; 6. Fixing assembly; 601. Rotating plate; 602. Connecting rod; 603. Slide plate; 604. Connecting rod; 605. Arc-shaped clamp; 606. Guide rod; 7. Gear I; 8. Gear II; 9. Rotating shaft; 10. Motor I; 11. Electric push rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-4 A fixture for measuring internal and external diameters includes: a workbench 1, with two sets of connecting plates 3 on the top of the workbench 1, and an adjusting assembly 5 on the side of the two sets of connecting plates 3 that are close to each other. The adjusting assembly 5 includes: two sets of short plates 505, with a lead screw 502 rotatably mounted inside the two sets of short plates 505, and a vernier caliper 4 threadedly connected to the outside of the lead screw 502. A rotating shaft 9 is fixedly mounted on one side of each set of short plates 505, and the two rotating shafts 9 are rotatably mounted inside the corresponding connecting plates 3. The rotating shaft 9 on the left side extends through to one side of the connecting plate 3, and the outer side of the rotating shaft 9... Gear 2 8 is fixedly installed on the side, and gear 1 7 is rotatably installed on one side of the connecting plate 3 on the left side. Gear 1 7 meshes with gear 2 8. The workbench 1 is equipped with a fixing component 6, which includes: a rotating plate 601. The top of the rotating plate 601 is hinged to two sets of connecting rods 602. One end of each set of connecting rods 602 is hinged to a sliding plate 603. The top of each set of sliding plates 603 is fixedly installed with a connecting rod 604. The top of each set of connecting rods 604 is fixedly installed with an arc-shaped clamping plate 605. The two sets of arc-shaped clamping plates 605 are located at the bottom of the vernier caliper 4.

[0020] In this embodiment, four sets of electric telescopic rods 2 are fixedly installed on the top of the workbench 1. The output ends of two sets of electric telescopic rods 2 located on the same side are fixedly connected to the corresponding connecting plates 3, which facilitates the adjustment of the vertical distance between the vernier caliper 4 and the workpiece. A second motor 501 is fixedly installed on one side of the short plate 505 on the right side. The output shaft of the second motor 501 is fixedly connected to the lead screw 502. A first motor 10 is fixedly installed on one side of the connecting plate 3 on the left side. The output shaft of the first motor 10 is fixedly connected to the gear 7, which facilitates the rotation of the lead screw 502 and the gear 7, and facilitates the adjustment of the vernier caliper 4 to measure the inner and outer diameters of workpieces of different specifications.

[0021] In this embodiment, an electric push rod 11 is fixedly installed on one side of the workbench 1. The output end of the electric push rod 11 is fixedly connected to the slide plate 603 on the right side, which facilitates the relative movement of the two sets of arc-shaped clamping plates 605. Two sets of guide rods 606 are slidably installed inside the two sets of slide plates 603. The two ends of the two sets of guide rods 606 are fixedly connected to the inner walls of both sides of the workbench 1. The rotating plate 601 is rotatably installed on the bottom inner wall of the workbench 1. Two sets of sliding grooves are opened on the top of the workbench 1. The two sets of connecting rods 604 are slidably installed inside the corresponding sliding grooves, which facilitates the stable movement of the two sets of clamping plates. A slider 503 is fixedly installed on one side of the vernier caliper 4. A limit rod 504 is slidably installed inside the slider 503. The two ends of the limit rod 504 are fixedly connected to the corresponding short plate 505 to prevent the vernier caliper 4 from rotating when it moves.

[0022] In this embodiment, during use, the workpiece whose inner and outer diameters need to be measured is placed on the top of the workbench 1. The electric push rod 11 is then driven to move the right-side slide plate 603. Through the connecting rod 602 hinged to one side of the slide plate 603 and the rotating plate 601 hinged to one side of the connecting rod 602, the left-side slide plate 603 moves while simultaneously rotating the rotating plate 601. This causes the connecting rods 604 on both sides of the rotating plate 601 to move the corresponding slide plates 603 and connecting rods 604 relative to each other, allowing the two sets of arc-shaped clamps 605 to move closer and further apart, facilitating effective fixing of workpieces of different sizes. The second motor 501 is then driven to rotate the lead screw 502, which in turn moves the outer vernier caliper 4. Once the vernier caliper 4 has moved to a suitable distance, the electric telescopic rod 2 is driven to... The electric telescopic rod 2 drives the connecting plate 3 to move up and down to adjust the distance between the vernier caliper 4 and the workpiece. The measuring blade on one side of the vernier caliper 4 abuts against the outer diameter of the workpiece. Then, the measuring block on the vernier caliper 4 is slid so that the measuring blade on the other side abuts against the other side of the workpiece. The outer diameter of the workpiece can be measured according to the reading on the vernier caliper 4. Then, the drive motor 10 drives the gear 7 to rotate, which in turn drives the gear 8 to rotate, which in turn drives the rotating shaft 9 to rotate, causing the short plate 505 to rotate. This flips the vernier caliper 4 so that the measuring blade on the back of the vernier caliper 4 abuts against the inner wall of the workpiece. The measuring block on the back of the vernier caliper 4 is slid again so that the measuring blade on the other side abuts against the inner wall of the workpiece. The inner diameter of the workpiece can then be measured, and it can be determined whether the workpiece is qualified.

[0023] The foregoing has provided a detailed description of the internal and external diameter detection fixture provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An inside and outside diameter inspection tool characterized by, Include: Workbench (1), the top of the workbench (1) is provided with two groups of connecting plates (3), the side of the two groups of connecting plates (3) is provided with adjusting assembly (5), the adjusting assembly (5) comprises: two groups of short plates (505), the inside of the two groups of short plates (505) is rotatably installed with lead screw (502), the outside of the lead screw (502) is threadedly connected with vernier caliper (4), one side of the two groups of short plates (505) is fixedly installed with rotating shaft (9), the two groups of rotating shafts (9) are rotatably installed in the inside of the corresponding connecting plate (3) respectively, the rotating shaft (9) penetrates to one side of connecting plate (3), the outside of the rotating shaft (9) is fixedly installed with gear two (8), one side of the connecting plate (3) is rotatably installed with gear one (7), the gear one (7) is engaged with gear two (8), the inside of the workbench (1) is provided with fixing assembly (6), the fixing assembly (6) comprises: rotating plate (601), the top of the rotating plate (601) is hingedly connected with two groups of connecting rods (602), one end of the two groups of connecting rods (602) is hingedly connected with slide plate (603), the top of the two groups of slide plates (603) is fixedly installed with connecting rod (604), the top of the two groups of connecting rods (604) is fixedly installed with arc-shaped clamping plate (605), the two groups of arc-shaped clamping plates (605) are located at the bottom of vernier caliper (4).

2. The inner and outer diameter detection tool of claim 1, wherein, The top of the workbench (1) is fixedly installed with four groups of electric telescopic rods (2), the output ends of the two groups of electric telescopic rods (2) located on the same side are fixedly connected with the corresponding connecting plates (3) respectively.

3. The inner and outer diameter detection tool of claim 1, wherein, One side of the short plate (505) located on the right side is fixedly installed with motor two (501), the output shaft of the motor two (501) is fixedly connected with lead screw (502), one side of the connecting plate (3) located on the left side is fixedly installed with motor one (10), the output shaft of the motor one (10) is fixedly connected with gear one (7).

4. The inner and outer diameter detection tool of claim 1, wherein, One side of the workbench (1) is fixedly installed with electric push rod (11), the output end of the electric push rod (11) is fixedly connected with the slide plate (603) on the right side.

5. The inner and outer diameter detection tool of claim 1, wherein, The inside of the two groups of slide plates (603) is slidably installed with two groups of guide rods (606), the two ends of the two groups of guide rods (606) are fixedly connected with the inner walls of the two sides of the workbench (1) respectively, the rotating plate (601) is rotatably installed on the bottom inner wall of the workbench (1), the top of the workbench (1) is provided with two groups of sliding grooves, the two groups of connecting rods (604) are slidably installed in the inside of the corresponding sliding grooves.

6. The inner and outer diameter detection tool of claim 1, wherein, One side of the vernier caliper (4) is fixedly installed with sliding block (503), the inside of the sliding block (503) is slidably installed with limiting rod (504), the two ends of the limiting rod (504) are fixedly connected with the corresponding short plates (505) respectively.

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