An adjustable-spacing wire target specimen

Abstract

The present invention relates to a wire target specimen with adjustable spacing, which comprises a fixed bracket having a U-shaped groove, fixed seats positioned at both ends of the opening of the U-shaped groove, and a target wire horizontally arranged between the two fixed seats. The fixed bracket, the fixed seats, and the target wire form a wire target unit, and the wire target specimen has multiple wire target units. The target wires of the multiple wire target units are arranged parallel to each other, and the vertical spacing between every two adjacent target wires can be adjusted as the fixed bracket moves relatively. The wire target specimen further comprises a measuring ruler for measuring the vertical spacing between two adjacent fixed brackets or two target wires. By the combined use of the target wire with adjustable spacing and the correspondingly arranged measuring ruler, the present invention can meet the test requirements of the wire target, has strong practicability, can be accurate to 0.1 mm, and at the same time has a simple structure, is convenient to adjust, and has a low test cost.

Description

Technical Field

[0001] The present invention belongs to the field of test calibration, and particularly relates to a wire target specimen with adjustable spacing. Background Art

[0002] A wire target is a common imaging performance test instrument, which is mainly composed of several wires with equal spacing or multiple groups of wires parallelly distributed at specific distances. Its material can be tungsten wire, nylon rope, copper wire, steel wire, etc. During the test, by successively imaging wire targets with different spacings, the minimum resolution ability of the system can be tested.

[0003] However, most of the existing wire targets are fixed target wires, that is, the distance between the target wires is fixed, such as 1 mm, 2 mm, etc. This results in the wire target being able to only test 1 mm or 2 mm, etc., causing limited test accuracy and being unable to accurately measure the resolution ability of the measured system.

[0004] Currently, in order to increase the test ability of the wire target, the common practice is to make multiple groups of wire targets with different spacings to meet different precision test requirements. However, this increases the test cost, and its test accuracy is also limited. For example, for a wire target with a minimum 1 mm interval distribution, it is impossible to distinguish whether the resolution of the measured target is 0.9 mm or 0.1 mm. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an improved wire target specimen with adjustable spacing.

[0006] To solve the above technical problem, the present invention adopts the following technical solution:

[0007] A wire target specimen with adjustable spacing includes a fixed bracket with a U-shaped groove, fixed seats positioned at both ends of the opening of the U-shaped groove, and target wires horizontally arranged between the two fixed seats. Among them, the fixed bracket, the fixed seats, and the target wires form a wire target unit. The wire target specimen has multiple wire target units. The target wires of the multiple wire target units are arranged parallel to each other, and the vertical distance between every two adjacent target wires can be adjusted as the fixed bracket moves relatively. The wire target specimen also includes a measuring scale for measuring the vertical distance between two adjacent target wires.

[0008] According to a specific implementation and preferred aspect of the present invention, the wire target specimen further includes a target base formed with multiple parallel guide rails. Each wire target unit is slidably or fixedly arranged on the guide rails from the fixed bracket. By moving the fixed bracket or the guide rails, the vertical distance between two adjacent target wires changes accordingly.

[0009] Specifically, multiple guide rails are divided into multiple groups, and each group of guide rails is provided with a fixed bracket correspondingly. The fixed bracket is fixedly connected to the guide rail and moves along with the movement of the guide rail. In this way, the distance between the target lines can be adjusted.

[0010] Further, each group of guide rails includes two track monomers. The fixed bracket includes a first support rod and a second support rod fixedly connected to the two track monomers respectively. The first support rod, the second support rod and the target seat form a U-shaped groove, and two fixed seats are respectively fixed at the ends of the first support rod and the second support rod away from the guide rail.

[0011] Preferably, the measuring scale is correspondingly arranged at the center of the target seat along the length direction of the guide rail, and the two track monomers of each group of guide rails are symmetrically arranged on the opposite sides of the target seat with respect to the measuring scale.

[0012] Specifically, multiple groups of guide rails are arranged with gradually increasing spacing from the inside to the outside based on the center line of the target seat. Under the movement of the guide rail, one of every two fixed brackets can pass through the other. With this arrangement, the minimum vertical distance between the target lines can be zero. Therefore, it is possible to distinguish whether the resolution of the measured target is 0.9 mm or 0.1 mm.

[0013] According to another specific implementation and preferred aspect of the present invention, each fixed bracket is U-shaped. Every two adjacent fixed brackets are embedded in the inner side wall of the other from the outer side wall of one U-shaped, and are relatively slidable along the fitting surface. In this way, the distance between the target lines can be adjusted.

[0014] Specifically, every two adjacent target lines are vertically offset. This facilitates the implementation of the fitting.

[0015] Preferably, the measuring scale is arranged on the outside of each fixed bracket, and scale lines are distributed along the thickness direction of the fixed bracket. The length by which every two adjacent fixed brackets protrude relatively is the vertical distance between the corresponding two target lines.

[0016] In addition, the target line is located in the middle of the U-shaped opening of the corresponding fixed bracket.

[0017] Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0018] By the combined use of the target lines with adjustable spacing and the correspondingly arranged measuring scale, the present invention can meet the test requirements of the line target, has strong practicability, can be accurate to 0.1 mm, and at the same time has a simple structure, convenient adjustment and low test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0020] Figure 1Schematic structural diagram of the wire target specimen with adjustable spacing based on a guide rail in Embodiment 1;

[0021] Figure 2 Schematic structural diagram of the embedded wire target specimen with adjustable spacing in Embodiment 2;

[0022] Where: 1, target base; 10, guide rail; 100, track unit;

[0023] 2, wire target unit; 20, fixing bracket; 201, first support rod; 202, second support rod; 21, fixing seat; 22, target wire;

[0024] 3, measuring scale;

[0025] 4, control component. Detailed implementation manners

[0026] To make the above objects, features, and advantages of the present application more obvious and understandable, the following describes the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0029] In this application, unless otherwise clearly stipulated and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In this application, unless otherwise clearly stipulated and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation. Embodiment 1

[0031] See Figure 1 As shown, the wire target specimen based on the rail type with adjustable spacing according to this embodiment includes a target base 1, four wire target units 2 provided on the target base 1, and a measuring scale 3. Each wire target unit 2 includes a fixed bracket 20 with a U-shaped groove, fixed seats 21 positioned at both ends of the opening of the U-shaped groove, and a target wire 22 horizontally arranged between the two fixed seats 21. The four target wires 22 of the four wire target units 2 are arranged parallel to each other.

[0032] Specifically, the upper surface of the target base 1 is rectangular. The measuring scale 3 is positioned on the upper surface of the target base 1, and at the same time, the measuring scale 3 extends along the length direction of the rectangle and is located at the center of the rectangle.

[0033] In this example, four groups of rails 10 are provided on the target base 1. Each group of rails 10 corresponds to one wire target unit 2, and the four groups of rails 10 are arranged with the center line of the rectangle as the reference, and the spacing gradually increases from the inside to the outside.

[0034] Each set of guide rails 10 is fixedly connected to a fixed bracket 20, and each set of guide rails 10 is arranged on the target base 1 so as to be slidably adjusted along its own length direction.

[0035] In this example, each set of guide rails 10 includes two track monomers 100 symmetrically arranged on both sides of the measuring scale 3. Each fixed bracket 20 includes a first support rod 201 and a second support rod 202. The first support rod 201 and the second support rod 202 are respectively vertically fixed to the two track monomers 100 from the bottom. Therefore, a U-shaped groove is formed among the first support rod 201, the second support rod 202, and the upper surface of the target base 1.

[0036] The fixed seats 21 are respectively fixed to the tops of the first support rod 201 and the second support rod 202, and both ends of the target line 22 are respectively connected between the two fixed seats 21.

[0037] In this example, the four target lines 22 are in a parallel state, and as the distance between the track monomers 100 increases, the distance between the four target lines 22 relative to the target base 1 gradually increases. In this way, the two target lines 22 formed between two adjacent line target units 2 can coincide. Therefore, it can meet the needs of any spacing detection and can be accurate to 0.1 mm.

[0038] In addition, in order to facilitate the transverse movement operation of each set of guide rails 10, in this example, control members 4 are respectively provided at both ends of each track monomer 100. When the spacing needs to be adjusted, the movement of each line target unit 2 can be realized by moving the control member 4, so as to obtain the required spacing (referring to the vertical distance between the two track monomers 100).

[0039] Therefore, in this embodiment, when in use, first read the scale positions of each target line to obtain the specific distribution of the target lines; then image the target lines with the measured instrument to observe whether the target lines can be distinguished; then adjust the positions of the target lines according to the measurement results. If the target lines can be distinguished, the vertical distance between the target lines can be adjusted by moving the guide rails through the control member to reduce the spacing between the target lines. If the target lines cannot be distinguished, the distance between the target lines needs to be increased; finally, repeat the above steps until the target lines cannot be distinguished, and use the spacing between the target lines at this time as the resolution value of the test equipment. It should be particularly noted that in this example, the detection resolution can be accurate to 0.1 mm. Embodiment 2

[0040] See Figure 2 As shown, for the embedded adjustable-spacing line target specimen according to this embodiment, it includes three line target units 2 and a measuring scale 3. Each line target unit 2 includes a U-shaped fixed bracket 20, fixed seats 21 positioned at both ends of the U-shaped opening, and a target line 22 horizontally arranged between the two fixed seats 21. The three line target units 2 are respectively nested in sequence from inside to outside of the fixed bracket 20, and the three target lines 22 are arranged parallel to each other.

[0041] Specifically, every two adjacent fixing brackets 20 are embedded in the inner side wall of another U-shaped from the outer side wall of one U-shaped, and are relatively slidably arranged from the joint surface.

[0042] There are three measuring rulers 3, and each measuring ruler 3 corresponds to the outer side wall of the U-shaped and extends along the thickness direction of the U-shaped.

[0043] In this example, the three measuring rulers 3 are located on the same side.

[0044] At the same time, each target line 22 is located in the middle of the U-shaped opening of the fixing bracket 20, and every two adjacent target lines 22 are arranged in a vertical offset.

[0045] In addition, in this example, the relative protruding length of every two adjacent fixing brackets 20 is the vertical distance between the corresponding two target lines 22.

[0046] Therefore, in this embodiment, when in use, adjust the relative positions of each fixing bracket, read the scale on the outer side wall of the fixing bracket, and obtain the distance between the target lines; image the target lines with the tested instrument, and observe whether the target lines can be distinguished; adjust the position of the target lines according to the measurement results, so that the tested instrument can distinguish the target lines until it cannot distinguish the target lines, and use the target line spacing at this time as the resolution value of the obtained test equipment. At the same time, it should be particularly noted that in this example, the detection resolution can be accurate to 0.1 mm.

[0047] In summary, this embodiment has the following advantages:

[0048] 1. By adjusting the vertical distance between the target lines, the resolution and measurement accuracy of the tested device are improved;

[0049] 2. The same wire target specimen can meet the requirements of different detections, reducing the test cost.

[0050] The above has made a detailed description of the present invention, aiming to enable those skilled in this field to understand the content of the present invention and implement it. However, the protection scope of the present invention cannot be limited by this. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A wire target specimen with adjustable spacing, comprising a fixing bracket having a U-shaped groove, fixing seats positioned at both ends of the U-shaped groove opening, and a target wire disposed transversely between the two fixing seats, characterized in that: The fixed bracket, the fixed seat, and the target line constitute a line target unit. The line target specimen has multiple line target units, wherein the target lines of the multiple line target units are arranged parallel to each other, and the vertical spacing between every two adjacent target lines can be adjusted as the fixed bracket moves relative to each other. Each fixed bracket is U-shaped, and every two adjacent fixed brackets are embedded from the outer wall of one U-shape into the inner wall of the other U-shape, and are relatively slidably arranged from the fitting surface; the line target specimen also includes a measuring ruler for measuring the vertical spacing between two adjacent lines.

2. The adjustable spacing wire target test piece according to claim 1, characterized in that: The line target specimen also includes a target base formed with multiple parallel guide rails. Each line target unit slides from the fixed bracket or is fixed on the guide rail. When the fixed bracket or the guide rail is moved, the vertical distance between two adjacent target lines changes accordingly.

3. The adjustable spacing wire target test piece according to claim 2, characterized in that: The plurality of guide rails are divided into a plurality of groups, each group of guide rails is correspondingly provided with a fixed bracket, and the fixed bracket is fixedly connected to the guide rails and moves with the movement of the guide rails.

4. The adjustable spacing wire target test piece according to claim 3, characterized in that: Each group of the guide rails includes two track units, and the fixed bracket includes a first support rod and a second support rod respectively fixedly connected to the two track units, wherein the first support rod, the second support rod and the target base form a U-shaped groove, and the two fixed seats are respectively fixed to the ends of the first support rod and the second support rod away from the guide rails.

5. The adjustable spacing wire target test piece according to claim 4, characterized in that: The measuring ruler is arranged at the center of the target base along the length direction of the guide rail, and the two track units of each group of the guide rails are symmetrically arranged on opposite sides of the target base with respect to the measuring ruler.

6. The adjustable spacing wire target test piece according to claim 5, characterized in that: The plurality of guide rails are arranged with the center line of the target seat as a reference and the spacing therebetween gradually increases from the inside to the outside. When the guide rails move, one of every two fixed brackets can be arranged to pass through the other.

7. The adjustable spacing wire target test piece according to claim 1, characterized in that: Every two adjacent target lines are staggered up and down.

8. The adjustable spacing wire target test piece according to claim 1, characterized in that: The measuring ruler is arranged on the outside of each fixing bracket, and scale lines are distributed along the thickness direction of the fixing bracket, wherein the relative protrusion length of each adjacent two fixing brackets is the vertical distance between the corresponding two target lines.

9. The adjustable spacing wire target test piece according to claim 8, characterized in that: The target line is located in the middle of the corresponding U-shaped opening of the fixing bracket.

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