A length measuring device for circular workpieces

Abstract

The utility model discloses a length measuring device of circular workpiece, including bottom plate, mount and axial measurement module, wherein, mount includes two positioning column, axial measurement module includes no -rod cylinder, guide rod, baffle and displacement sensor, no -rod cylinder is sleeved on the guide rod, and no -rod cylinder can slide along the guide rod axially, and baffle is fixed on no -rod cylinder, and displacement sensor is fixed on baffle, the axle of two positioning column is coplanar and is V shape arrangement, and the guide rod is perpendicular to the plane where mount is located, and baffle and bottom plate are parallel to the plane where mount is located, and are located fixedly on the both sides of mount respectively. The utility model measures the length of circular tube through baffle and displacement sensor, reduces the operation procedure, realizes the automatic measurement to the axial length of circular tube.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology, specifically to a length measuring device for a circular workpiece. Background Technology

[0002] The statements herein are provided merely as background information in connection with this application and do not necessarily constitute prior art.

[0003] Circular tube dimensional measuring tools are convenient inspection tools used in industrial production to control various parameters such as product aperture and spatial dimensions. They can replace professional measuring equipment and are suitable for mass production scenarios. Currently, the measurement of circular tube products mostly relies on traditional tools such as height gauges and calipers, which are difficult to use for both length and diameter measurement. This results in cumbersome operation, low measurement efficiency, and high cost, failing to meet the rapid inspection needs of actual production. There is an urgent need for a device that can automatically measure the length and diameter of circular tubes.

[0004] Prior art document (201320326842.7) discloses a length measuring device including a base plate, a dial fixing plate, a baffle, at least one V-shaped bracket, and a dial indicator. The dial fixing plate and the baffle are fixed at both ends of the base plate and arranged parallel to each other. At least one V-shaped bracket is fixed in the middle of the base plate and located between the dial fixing plate and the baffle. The dial indicator passes horizontally through the dial fixing plate and is fixed to the dial fixing plate. In the technical solution disclosed in this prior art document, only the length of a circular tube is measured, and the circular tube needs to be close to the base plate, which is cumbersome to operate and has limited functionality. Summary of the Invention

[0005] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0006] This invention addresses the technical problems of cumbersome operation and limited measurement parameters in existing round tube measurement technology. It provides a length measuring device for round workpieces that can automatically measure the length and diameter of round tubes, thereby improving production efficiency.

[0007] This invention provides a length measuring device for a circular workpiece, comprising a base plate, a fixed frame, and an axial measuring module. The fixed frame includes two positioning columns. The axial measuring module includes a rodless cylinder, a guide rod, a baffle, and a displacement sensor. The rodless cylinder is mounted on the guide rod and can slide axially along the guide rod. The baffle is fixed to the rodless cylinder, and the displacement sensor is fixed to the baffle. The two positioning columns are coplanar and arranged in a V-shape. The guide rod is perpendicular to the plane of the fixed frame, and the baffle and base plate are parallel to the plane of the fixed frame and located on opposite sides of the fixed frame. The circular tube to be measured is fixed by the fixed frame and the base plate. When the rodless cylinder is activated, the baffle and displacement sensor move along the guide rod towards the fixed frame. When they contact one end of the circular tube, the baffle pushes the tube towards the base plate until the tube is flush against the base plate, achieving automatic alignment of the tube and avoiding manual operation. After the tube and base plate are flush, the displacement sensor reads the displacement made by the baffle, thereby calculating the axial length of the tube. This invention reduces operational steps and enables automatic measurement of the axial length of the tube by using a baffle to push the tube and a displacement sensor to read the baffle displacement.

[0008] The present invention discloses a length measuring device for circular workpieces. In a preferred embodiment, the device comprises multiple parallel fixing frames, with the intersection point of the positioning column axes of these frames collinear and parallel to the guide rod. By setting multiple parallel, spaced fixing frames, the device can measure circular tubes of different lengths, thus improving measurement efficiency.

[0009] In a preferred embodiment of the circular workpiece length measuring device described in this utility model, a gap is left between the two positioning posts to allow a baffle to pass through. By leaving a gap between the two positioning posts, the baffle can pass through the fixing frame. When there are multiple fixing frames, if the length of the circular tube is short, the baffle can pass through the fixing frame until it touches one end of the circular tube, thereby pushing the circular tube until it is pressed tightly against the base plate, thus achieving automatic alignment of circular tubes of different lengths.

[0010] In the length measuring device for a circular workpiece described in this utility model, the positioning pin is preferably a roller. By setting the positioning pin as a roller, the frictional force experienced by the baffle when pushing the circular tube is reduced, the workload of the rodless cylinder is reduced, and energy is saved while avoiding wear on the surface of the circular tube.

[0011] The length measuring device for a circular workpiece described in this utility model, in a preferred embodiment, further includes a radial measuring module. The radial measuring module comprises a cylinder frame, a cylinder, and a second displacement sensor. The cylinder is fixed to the cylinder frame, which is located above a fixed frame. The cylinder is equipped with a telescopic rod, which is parallel to the plane of the fixed frame, and its axis is perpendicular to the axis of the guide rod. The second displacement sensor is fixedly connected to the end of the telescopic rod. When the cylinder operates, the telescopic rod extends forward until its end touches the circular tube above the fixed frame. By reading the displacement of the end of the telescopic rod through the second displacement sensor, the diameter of the circular tube can be measured. This allows for the measurement of both the length and diameter of a circular tube within the same device, simplifying the measurement process and saving measurement time.

[0012] In use, the circular tube is first placed on the fixed frame. The axial measurement module is then activated, and the rodless cylinder drives the baffle to slide on the guide rod. When it contacts the circular tube, it pushes the circular tube until the other end of the circular tube is pressed against the base plate. The displacement sensor records the displacement at this time, and the length of the circular tube can be calculated. The radial measurement module is then activated, and the telescopic rod of the cylinder extends towards the circular tube until its end contacts the circular tube. The displacement of the end of the telescopic rod is recorded by the second displacement sensor, and the diameter of the circular tube can be calculated.

[0013] This utility model has the following beneficial effects: (1) This utility model uses a rodless cylinder in combination with a baffle and a displacement sensor to realize automatic alignment and automatic measurement when measuring the axial direction of a circular tube, thus simplifying the measurement steps; (2) This utility model uses multiple baffles to measure different lengths of circular tubes, making it suitable for various measurement scenarios; (3) Due to the use of axial measurement module and radial measurement module, this utility model realizes the measurement of the length and diameter of the round tube in the same device, avoids the need to change different gauges to measure the size of the round tube, simplifies the steps of round tube measurement, and improves the measurement efficiency.

[0014] These and other advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0015] To further illustrate the above and other advantages and features of this application, the specific embodiments of this application will be described in more detail below with reference to the accompanying drawings. The drawings, together with the following detailed description, are included in and form a part of this specification. Elements having the same function and structure are indicated by the same reference numerals. It should be understood that these drawings only depict typical examples of this application and should not be considered as limiting the scope of this application.

[0016] Figure 1This is a schematic diagram of the structure of a length measuring device for a circular workpiece according to this application; Figure 2 This is a schematic diagram of the structure of the fixing frame of a length measuring device for a circular workpiece according to this application; Figure 3 This is a side view of a length measuring device for a circular workpiece according to this application.

[0017] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.

[0018] Explanation of reference numerals in the attached figures: 1. Base plate; 2. Fixing frame; 21. Positioning column; 31. Rodless cylinder; 32. Guide rod; 33. Baffle; 34. Displacement sensor; 41. Cylinder frame; 42. Cylinder. Detailed Implementation

[0019] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0020] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0021] It should be noted that, unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning as understood by a person with ordinary skills in the field to which this application pertains.

[0022] In the description of the embodiments of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Example 1

[0023] like Figure 1As shown, a length measuring device for a circular workpiece includes a base plate 1, a fixed frame 2, and an axial measuring module. The fixed frame 2 includes two positioning posts 21. The axial measuring module includes a rodless cylinder 31, a guide rod 32, a baffle 33, and a displacement sensor 34. The rodless cylinder 31 is sleeved on the guide rod 32 and can slide along the axial direction of the guide rod 32. The baffle 33 is fixed on the rodless cylinder 31, and the displacement sensor 34 is fixed on the baffle 33. The two positioning posts 21 are coplanar and arranged in a V-shape. The guide rod 32 is perpendicular to the plane of the fixed frame 2. The baffle 33 and the base plate 1 are parallel to the plane of the fixed frame 2 and are located on opposite sides of the fixed frame 2.

[0024] There are multiple fixing frames 2, which are parallel to each other. The intersection point of the positioning column 21 axes of the multiple fixing frames 2 is collinear and parallel to the guide rod 32.

[0025] like Figure 2 As shown, a gap is left between the two positioning posts 21 for the baffle 33 to pass through.

[0026] Positioning pin 21 is a roller.

[0027] like Figure 3 As shown, it also includes a radial measurement module, which includes a cylinder frame 41, a cylinder 42, and a second displacement sensor. The cylinder 42 is fixed on the cylinder frame 41, which is located above the fixed frame 2. The cylinder 42 is equipped with a telescopic rod, which is parallel to the plane of the fixed frame 2, and the axis of the telescopic rod is perpendicular to the axis of the guide rod 32. The second displacement sensor is fixedly connected to the end of the telescopic rod.

[0028] In use, the circular tube is first placed on the fixed frame 2. The axial measurement module is activated, and the rodless cylinder 31 drives the baffle 33 to slide on the guide rod 32. When it contacts the circular tube, it pushes the circular tube until the other end of the circular tube is in close contact with the base plate 1. The displacement sensor records the displacement at this time, and the length of the circular tube can be calculated. The radial measurement module is activated, and the telescopic rod of the cylinder 42 extends into the circular tube until its end contacts the circular tube. The displacement of the end of the telescopic rod is recorded by the second displacement sensor, and the diameter of the circular tube can be calculated.

[0029] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0030] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A length measuring device for a circular workpiece, characterized in that, The device includes a base plate (1), a fixing frame (2), and an axial measurement module. The fixing frame (2) includes two positioning columns (21). The axial measurement module includes a rodless cylinder (31), a guide rod (32), a baffle (33), and a displacement sensor (34). The rodless cylinder (31) is sleeved on the guide rod (32) and can slide along the axial direction of the guide rod (32). The baffle (33) is fixed on the rodless cylinder (31), and the displacement sensor (34) is fixed on the baffle (33). The two positioning posts (21) are coplanar and arranged in a V-shape. The guide rod (32) is perpendicular to the plane of the fixing frame (2). The baffle (33) and the base plate (1) are parallel to the plane of the fixing frame (2) and are located on both sides of the fixing frame (2).

2. The length measuring device for a circular workpiece according to claim 1, characterized in that, There are multiple fixing frames (2), and the multiple fixing frames (2) are parallel to each other. The intersection point of the positioning column (21) axis of the multiple fixing frames (2) is collinear and parallel to the guide rod (32).

3. The length measuring device for a circular workpiece according to claim 2, characterized in that, A gap is left between the two positioning posts (21) for the baffle (33) to pass through.

4. The length measuring device for a circular workpiece according to claim 1, characterized in that, The positioning post (21) is a roller.

5. The length measuring device for a circular workpiece according to claim 1, characterized in that, It also includes a radial measurement module, which includes a cylinder frame (41), a cylinder (42), and a second displacement sensor. The cylinder frame (41) is located above the fixed frame (2). The cylinder (42) is fixed on the cylinder frame (41). The cylinder (42) is provided with a telescopic rod. The telescopic rod is parallel to the plane where the fixed frame (2) is located, and the axis of the telescopic rod is perpendicular to the axis of the guide rod (32). The second displacement sensor is fixedly connected to the end of the telescopic rod.

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