Dimension measuring tool

Abstract

The utility model discloses a dimension measuring tool which comprises a positioning structure and a measuring structure which are arranged vertically. The positioning structure comprises a fixing frame and a positioning device, and the positioning device is arranged on the fixing frame. The extension of the positioning device is internally tangent to the inner wall of the tubular component to be measured, and the positioning device is used for positioning the measuring structure; the measuring structure comprises an elastic component and a measuring scale, one end of the elastic component is arranged on the fixing frame, the other end of the elastic component is connected with the measuring scale, and the free end of the measuring scale is used for making contact with the bottom of the inner wall of the tubular component to be measured. According to the utility model, dimension measurement precision can be improved and dimension measurement cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor production, in particular to a size measuring tool. Background Art

[0002] Furnace tube equipment is crucial for chip production, and quartz tubes, the tubular components to be measured, are crucial components within these equipment. However, due to their large size and transparent material, these tubular components cannot be measured using automated measuring equipment.

[0003] In the related art, a tape measure is usually used to measure the dimensions of the tubular components to be measured. However, this measurement method has low measurement accuracy and efficiency, and the measurement cost of this measurement method is high. Utility Model Content

[0004] In response to the above-mentioned problems of the prior art, the present invention discloses a dimension measuring tool that can measure the dimensions of a tubular component to be measured, the dimensions of which are difficult to accurately determine, with the help of a measuring tool whose dimensions are easy to accurately manufacture and measure, thereby improving the dimension measurement accuracy and measurement efficiency and reducing the dimension measurement cost.

[0005] The technical solutions disclosed in this utility model are as follows:

[0006] A dimension measuring tool, comprising a positioning structure and a measuring structure, wherein the positioning structure is arranged perpendicular to the measuring structure;

[0007] The positioning structure includes a fixing frame and a positioning device, wherein the positioning device is arranged on the fixing frame; the outer extension of the positioning device is inscribed in the inner wall of the tubular component to be measured, so as to position the measuring structure;

[0008] The measuring structure includes an elastic component and a measuring ruler. One end of the elastic component is arranged on the fixing frame, and the other end of the elastic component is connected to the measuring ruler. The free end of the measuring ruler is used to contact the bottom of the inner wall of the tubular component to be measured.

[0009] In an optional embodiment, the fixing frame includes a handle and a fixing rod, the positioning device includes a support frame, the handle is vertically arranged at one end of the fixing rod, the support frame is vertically arranged at the other end of the fixing rod, the measuring structure is vertically arranged at the support frame, and one end of the elastic component is arranged on the support frame;

[0010] The outer extension of the support frame is inscribed in the inner wall of the tubular component to be measured, so as to position the measurement structure.

[0011] In an optional embodiment, the positioning device further comprises a positioning protrusion provided on the handle, and the outer extension of the positioning protrusion is inscribed in the inner wall of the tubular component to be measured.

[0012] In an optional embodiment, the positioning device further comprises a slot provided on the handle, and the slot is used for inserting the top of the tubular component to be measured.

[0013] In an optional embodiment, the elastic component includes a spring rod and a spring arranged inside the spring rod, and the spring rod is arranged perpendicular to the support frame;

[0014] One end of the spring rod and one end of the spring are both arranged on the support frame, and the other end of the spring rod and the other end of the spring are both connected to the measuring ruler.

[0015] In an optional embodiment, the measuring ruler includes a measuring portion and a non-measuring portion, and the measuring portion and the non-measuring portion are vertically arranged;

[0016] The measuring portion is located outside the spring rod;

[0017] The non-measuring portion is arranged on the inner side of the other end of the spring rod, the non-measuring portion is arranged on the inner side of the other end of the spring rod, the extension of the non-measuring portion contacts the inner wall of the other end of the spring rod, and the other end of the spring is fixedly connected to the bottom of the non-measuring portion.

[0018] In an optional embodiment, the straight line where the starting scale of the measuring portion is located is aligned with the upper surface of the other end of the spring rod.

[0019] In an optional embodiment, the support frame is shaped like a cross, a mitre, or an X in a top view, and the handle is shaped like a cross, a mitre, or an X in a top view;

[0020] One end of the fixing rod is vertically arranged at the center of the handle, and the other end of the fixing rod is vertically arranged at the center of the supporting frame.

[0021] In an optional embodiment, the length of the support frame is equal to the inner diameter of the tubular component to be measured, and the length of the handle is greater than the length of the support frame.

[0022] In an optional embodiment, the shape of the free end of the measuring ruler matches the bottom shape of the tubular component to be measured.

[0023] The utility model provides a dimension measuring tool, comprising a positioning structure and a measuring structure, wherein the positioning structure is arranged perpendicularly to the measuring structure, the positioning structure further comprising a fixing frame and a positioning device, the positioning device being arranged on the fixing frame, the measuring structure further comprising an elastic component and a measuring ruler, one end of the elastic component being arranged on the fixing frame, the other end of the elastic component being connected to the measuring ruler, the lengths of the fixing frame, the elastic component, and the measuring ruler being all known. When measuring the dimension of a tubular component to be measured, the dimension measuring tool can be inserted into the interior of the tubular component to be measured so that the free end of the measuring ruler contacts the bottom of the inner wall of the tubular component to be measured. After the free end of the measuring ruler contacts the bottom of the inner wall of the tubular component to be measured, the measuring ruler moves downward under the drive of the elastic component to generate a compression amount, thereby being able to accurately measure the dimension of the tubular component to be measured based on the relationship between the precisely measured length of the fixing frame, the length of the elastic component, the length of the measuring ruler, and the compression amount, thereby improving the dimension measurement accuracy and efficiency of the tubular component to be measured and reducing the dimension measurement cost.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the disclosure of the present utility model, and together with the specification are used to explain the principles disclosed in the present utility model, and do not constitute an improper limitation on the disclosure of the present utility model.

[0026] Figure 1 These are the front view and side view of a dimension measuring tool provided in an embodiment of the present application.

[0027] Figure 2 This is a top view of a support frame provided in an embodiment of the present application.

[0028] Figure 3 It is a partial schematic diagram of a measurement structure provided in an embodiment of the present application.

[0029] Figure 4 This is a size measurement diagram provided in the embodiment of the present application. Figure 1 .

[0030] Figure 5 This is a size measurement diagram provided in the embodiment of the present application. Figure 2 .

[0031] Among them, the reference numerals in the figure correspond to: 1-positioning structure, 11-handle, 12-fixing rod, 13-support frame, 14-positioning protrusion, 2-measuring structure, 21-elastic component, 211-spring rod, 212-spring, 22-measuring ruler, 221-measuring part, 222-non-measuring part, 3-tubular component to be measured, 4-capillary glass tube. DETAILED DESCRIPTION

[0032] In order to enable ordinary persons in the art to better understand the technical solutions disclosed in this utility model, the technical solutions in the embodiments disclosed in this utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by ordinary persons in the art without making any creative efforts shall fall within the scope of protection of this utility model.

[0033] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0034] Figure 1 : are front and side views of a size measuring tool provided in an embodiment of the present application, such as Figure 1 As shown, the dimension measuring tool comprises a positioning structure 1 and a measuring structure 2, wherein the positioning structure 1 is arranged perpendicular to the measuring structure 2;

[0035] The positioning structure 1 includes a fixing frame and a positioning device, wherein the positioning device is arranged on the fixing frame; the outer extension of the positioning device is inscribed in the inner wall of the tubular component to be measured, and is used to position the measuring structure 2;

[0036] The measuring structure 2 includes an elastic component 21 and a measuring ruler 22. One end of the elastic component 21 is set on the fixing frame, and the other end of the elastic component 21 is connected to the measuring ruler 22. The free end of the measuring ruler 22 is used to contact the bottom of the inner wall of the tubular component to be measured.

[0037] Optionally, the tubular component to be tested can be any type of transparent tubular component, which is not specifically limited. For example, in the field of semiconductor production technology, the tubular component to be tested can be a quartz tube.

[0038] Optionally, the vertical arrangement of the positioning structure 1 and the measuring structure 2 may mean that: since the dimension measuring tool needs to be inserted into the interior of the tubular component to be measured for measurement during the test process, the measuring structure 2 is parallel to the vertical direction of the tubular component to be measured. In order to ensure that the dimension measuring tool and the tubular component to be measured are concentric, the positioning structure 1 may be provided with a horizontal device, and the measuring structure 2 is perpendicular to the horizontally arranged device in the positioning structure 1.

[0039] It should be noted that the embodiments of this application do not limit the connection method between the positioning structure 1 and the measuring structure 2; such connection methods may include, but are not limited to, fixed connections, movable connections, and detachable connections. Furthermore, to ensure the dimensional accuracy of the sizing tool itself, and thus the dimensional measurement accuracy of the tubular component being measured, the positioning structure 1 and the measuring structure 2 may be fixedly connected. Furthermore, if the positioning structure 1 and the measuring structure 2 are made of polytetrafluoroethylene plastic, the positioning structure 1 and the measuring structure 2 may be fixedly connected via heat-welding.

[0040] Specifically, the positioning structure 1 further includes a fixing frame and a positioning device, which is mounted on the fixing frame. When a sizing tool is inserted into a tubular component for dimensional measurement, to ensure concentricity between the sizing tool and the component, the outer extension of the positioning device can be inscribed within the inner wall of the component, thereby positioning the measuring structure 2. For example, since the outer extension of the positioning device is inscribed within the inner wall of the component, the outer extension of the positioning device can be equal to the inner diameter of the component.

[0041] It should be noted that the embodiment of the present application does not limit the position of the positioning device on the fixing frame, which can be adjusted according to actual production needs. The embodiment of the present application also does not limit the connection method between the fixing frame and the positioning device, which can be a fixed connection, a movable connection, a detachable connection, etc. Furthermore, in order to ensure the dimensional accuracy of the sizing tool itself, and thus ensure the dimensional measurement accuracy of the tubular component to be measured, the fixing frame and the positioning device can be set to be fixedly connected. Furthermore, in the case where the material of the fixing frame and the positioning device is polytetrafluoroethylene plastic, the fixing frame and the positioning device can be fixedly connected by hot melt welding.

[0042] Specifically, the measurement structure 2 further includes an elastic component 21 and a measuring ruler 22. One end of the elastic component 21 is disposed on the fixing frame, and the other end of the elastic component 21 is connected to the measuring ruler 22. For example, the elastic component 21 can be fixedly connected to the fixing frame and the measuring ruler 22. Because the measurement structure 2 needs to be inserted into the tubular component to be measured during measurement, the free end of the measuring ruler 22, i.e., the end away from the fixing frame, can contact the bottom of the inner wall of the tubular component to be measured. After contact, the elastic component 21 moves downward under the pressure of the tubular component to be measured and the measuring ruler 22, generating a compression amount. This compression amount can be understood as the distance the measuring ruler 22 moves downward, and this compression amount can be measured by the measuring ruler 22.

[0043] It should be noted that the embodiment of the present application does not limit the specific structure of the elastic component 21. It only needs to be able to drive the measuring ruler 22 to move downward after the free end of the measuring ruler 22 contacts the bottom of the inner wall of the tubular component to be measured, and can cooperate with the measuring ruler 22 to accurately measure the compression amount.

[0044] The present embodiment does not limit the specific structure of the measuring ruler 22, as long as its free end can contact the bottom of the inner wall of the tubular component to be measured and can accurately measure the compression. For example, the measuring ruler can be rectangular, cylindrical, etc.

[0045] Since the length of the fixing frame, the length of the elastic component 21, and the length of the measuring ruler 22 are all easy to measure accurately, the amount of downward compression of the elastic component 21 can also be accurately measured by the measuring ruler 22. Based on the known and accurate relationship between the length of the fixing frame, the length of the elastic component 21, the length of the measuring ruler 22, and the amount of compression, the size of the tubular component to be measured can be accurately measured, thereby improving the dimensional measurement accuracy and measurement efficiency and reducing the dimensional measurement cost.

[0046] In an exemplary embodiment, continuing as Figure 1 As shown, the above-mentioned fixing frame includes a handle 11 and a fixing rod 12, and the above-mentioned positioning device includes a support frame 13. The handle 11 is vertically arranged at one end of the fixing rod 12, and the support frame 13 is vertically arranged at the other end of the fixing rod 12. The measuring structure 2 is vertically arranged with the support frame 13, and one end of the elastic component 21 is arranged on the support frame 13; the extension of the support frame 13 is inscribed in the inner wall of the tubular component to be measured, so as to position the measuring structure 2.

[0047] In this embodiment, the fixing frame may include a handle 11 arranged in a horizontal direction and a fixing rod 12 arranged in a vertical direction, and the positioning device may include a support frame 13 arranged in a horizontal direction, the handle 11 is arranged at one end of the fixing rod 12, and the support frame 13 is arranged at the other end of the fixing rod 12, and the fixing rod 12 is arranged perpendicular to the handle 11 and the support frame 13 respectively.

[0048] Optionally, the connection between the fixing rod 12, support frame 13, and handle 11 may include, but is not limited to, a fixed connection, a movable connection, a detachable connection, and the like. Furthermore, to ensure the dimensional accuracy of the sizing tool itself, and thus the dimensional measurement accuracy of the tubular component being measured, the connection between the fixing rod 12, support frame 13, and handle 11 may be a fixed connection. Furthermore, if the fixing rod 12, support frame 13, and handle 11 are made of polytetrafluoroethylene plastic, the fixing rod 12, support frame 13, and handle 11 may be fixedly connected by heat-melt welding.

[0049] Specifically, the length of the support frame 13 matches the inner diameter of the tubular component to be measured. Furthermore, the length of the support frame 13 is equal to the inner diameter of the tubular component to be measured, so that when the sizing tool is placed in the tubular component to be measured, the extension of the support frame 13 can be inscribed with the inner wall of the tubular component to be measured, thereby positioning the measurement structure 2. In other embodiments, the support frame 13 may not be provided at the end of the fixed rod 12, but may be provided vertically at any position on the fixed rod 12, as long as it can ensure that the measurement structure 2 can be positioned during measurement.

[0050] Specifically, one end of the elastic component 21 is disposed on the support frame 13. The connection method may include but is not limited to fixed connection, movable connection, detachable connection, etc.

[0051] Since the fixing rod 12 can play a supporting and positioning role in the vertical direction, the handle 11 can facilitate operation during measurement, and the support frame 13 can be inscribed with the inner wall of the tubular component to be measured in the horizontal direction, which is used to accurately position the measuring structure 2, thereby improving measurement convenience and measurement accuracy.

[0052] The embodiment of the present application does not limit the shapes and sizes of the handle 11 , the fixing rod 12 , and the support frame 13 .

[0053] Optionally, the fixed rod 12 can be a rod with a fixed length or a rod with an adjustable length. For a rod with an adjustable length, for example, the length of the fixed rod 12 can be set to N length levels, where N is a positive integer greater than 1, and the length value corresponding to each length level is known. The length of the fixed rod 12 can be adjusted by extending and retracting the fixed rod 12 upward and downward. For a longer tubular component to be tested, the length of the fixed rod 12 can be adjusted to be longer, and for a shorter tubular component to be tested, the length of the fixed rod 12 can be adjusted to be shorter. The overall shape of the fixed rod 12 can be a straight line, an S-shape, etc. The cross-sectional shape of the fixed rod 12 can be any shape, such as a circle, a triangle, a rectangle, etc.

[0054] Optionally, the shape of the support frame 13 can be any shape, which is not specifically limited. Figure 2 This is a top view of a support frame provided in an embodiment of the present application, as shown in FIG. Figure 2 As shown, when a capillary glass tube is set inside the tubular component to be measured, the capillary glass tube is raised in the tubular component to be measured. In order to avoid this protrusion during measurement, the shape of the top view of the support frame 13 can be set to a cross shape, a crisscross shape, an X shape, etc. that can avoid the protrusion of the capillary glass tube.

[0055] Optionally, the shape of the handle 11 can be any shape and is not specifically limited thereto. Since the handle 11 is disposed on the outside of the tubular component to be measured during the measurement process, in order to facilitate the measurement operation of the measurement personnel and improve the convenience of the measurement operation, the shape of the handle 11 can be set to a cross shape, a P-shaped shape, an X shape, etc. that is convenient for design and operation.

[0056] When the top view of the support frame 13 and the top view of the handle 11 are both cross-shaped, one end of the fixing rod 12 is vertically arranged at the center of the cross of the handle 11, and the other end of the fixing rod 12 is vertically arranged at the center of the cross of the support frame 13. This not only facilitates the design and measurement operation of the measurement personnel and improves the convenience of the measurement operation, but also effectively avoids the protrusion of the capillary glass tube in the tubular component to be measured when a capillary glass fiber reinforced plastic tube is installed in the tubular component to be measured, avoiding damage to the internal capillary glass tube during the measurement process, and further improving the dimensional measurement accuracy of the tubular component to be measured.

[0057] In a specific embodiment, since the operator needs to operate the handle 11 when inserting the size measuring tool into the tubular component to be measured for size measurement, the handle 11 is set outside the tubular component to be measured during the measurement process. In order to improve the convenience of operation and measurement accuracy, the length of the handle 11 can be set to be greater than the length of the support frame 13.

[0058] Figure 3 is a partial schematic diagram of a measurement structure provided in an embodiment of the present application, such as Figure 3 As shown, in an exemplary embodiment, the elastic component 21 includes a spring rod 211 and a spring 212 disposed inside the spring rod, and the spring rod 211 is disposed perpendicular to the support frame 13 .

[0059] One end of the spring rod 211 and one end of the spring 212 are both disposed on the support frame 13 , and the other end of the spring rod 211 and the other end of the spring 212 are both connected to the measuring ruler 22 .

[0060] Optionally, the spring rod 211 serves as a spring fixture and a reference point during compression measurement. When the sizing tool is inserted into the tubular component to be measured, and the free end of the measuring ruler 22 contacts the bottom of the inner wall of the tubular component, the spring can drive the measuring ruler 22 downward within the spring rod 211, thereby measuring the compression. The spring rod 211 is vertically mounted on the support frame 13. The embodiments of this application do not limit the method of securing the spring rod 211 and the support frame 13; such methods may include, but are not limited to, fixed, movable, or detachable connections. Furthermore, to ensure the dimensional accuracy of the sizing tool itself, and thus the dimensional measurement accuracy of the tubular component to be measured, the connection between the spring rod 211 and the support frame 13 can be a fixed connection. Furthermore, if the spring rod 211 and the support frame 13 are made of polytetrafluoroethylene plastic, the spring rod 211 and the support frame 13 can be fixedly connected by heat-melt welding.

[0061] Furthermore, one end of the spring rod 211 is fixedly mounted on the support frame 13, and the other end of the spring rod 211 is connected to the measuring ruler 22. The present embodiment does not limit the manner in which the other end of the spring rod 211 is connected to the measuring ruler 22. During the measurement process, when the free end of the measuring ruler 22 contacts the bottom of the inner wall of the tubular component to be measured, the spring drives the measuring ruler 22 to move downward within the spring rod 211, and the compression amount is measured by the measuring ruler 22. Therefore, the other end of the spring rod 211 can be connected to the measuring ruler 22 in a non-free, non-fixed manner, such as a sliding connection, so that the measuring ruler 22 can move downward along the inner wall of the spring rod 211.

[0062] Optionally, since the function of the spring 212 is to drive the measuring ruler 22 to move downward along the inside of the spring rod 211 during measurement, in order to improve the measurement stability of the dimensional measuring tool and further improve the measurement accuracy, the other end of the spring 212, that is, the end of the spring 212 away from the support frame 13, can be set to be fixedly connected to the inactive end of the measuring ruler 22.

[0063] Optionally, the cross-sectional shape of the spring rod 211 can be any shape, for example, circular, triangular, rectangular, etc.

[0064] Therefore, by configuring the elastic component 21 to include a spring 212 and a spring rod 211, the spring 212 drives the measuring ruler 22 to move downward during measurement so as to accurately measure the compression amount, and the spring rod 211 can fix the spring and serve as a reference for accurately measuring the compression amount, thereby further improving the dimensional measurement accuracy and measurement efficiency.

[0065] In other embodiments, the spring may also be replaced by a lifting structure, which drives the measuring ruler 22 to move up and down in the spring rod 211.

[0066] In other embodiments, the elastic component 21 may further include a spring but not the spring rod 211 , and during the measurement process, a reference object for compression measurement may be set in other ways.

[0067] In a specific embodiment, continue as Figure 3 As shown, the measuring ruler 22 includes a measuring portion 221 and a non-measuring portion 222 , and the measuring portion 221 and the non-measuring portion 222 are vertically arranged;

[0068] The measuring portion 221 is located outside the spring rod 211;

[0069] The non-measurement portion 222 is disposed inside the other end of the spring rod 211 , the extension of the non-measurement portion 222 contacts the inner wall of the spring rod 211 , and the other end of the spring 212 is fixedly connected to the bottom of the non-measurement portion 222 .

[0070] Optionally, the measuring portion 221 is a portion provided with a scale, and the non-measuring portion 222 is a portion not provided with a scale, and the measuring portion 221 and the non-measuring portion 222 are arranged vertically.

[0071] Since the embodiment of the present application needs to measure the compression amount by using the measuring ruler 22, the measuring portion 221 can be exposed outside the spring rod 211, and in order to ensure the measurement accuracy, the length of the measuring portion 221 can be accurately measured to 0.1 mm.

[0072] The non-measuring portion 222 is not provided with a scale and can therefore be positioned within the spring rod 211 to be secured to the spring 212. Specifically, to ensure that the measuring ruler 22 can accurately move downward along the spring rod 211 when the free end of the measuring ruler 22 contacts the bottom inner wall of the tubular component to be measured when the dimensional measuring tool is inserted into the tubular component to be measured, the non-measuring portion 222 can be positioned inside the other end of the spring rod 211, i.e., the end of the spring rod 211 away from the support frame 13, with the outer extension of the non-measuring portion 222 contacting the inner wall of the other end of the spring rod 211. It should be noted that while the outer extension of the non-measuring portion 222 contacts the inner wall of the other end of the spring rod 211, to ensure the sliding stability of the measuring ruler 22 within the spring rod 211, the upper surface of the non-measuring portion 222 can also contact the inner surface of the end of the spring rod 211 away from the support frame 13.

[0073] Optionally, since the function of the spring 212 is to drive the measuring ruler 22 to move downward along the inside of the spring rod 211 during measurement, in order to improve the measurement stability of the dimensional measuring tool and further improve the measurement accuracy, the other end of the spring, that is, the end of the spring away from the support frame 13 can be set to be fixedly connected to the bottom of the non-measuring part.

[0074] Therefore, by providing the measuring ruler 22 with a measuring portion 221 and a non-measuring portion 222, and by contacting the outer extension of the non-measuring portion 222 with the interior of the spring rod 211, and by fixedly connecting the bottom to the spring 212, it is possible to ensure that the non-measuring portion 222 moves precisely within the spring rod 211, thereby accurately measuring the size of the compression amount; and by providing the measuring portion 221 outside the spring rod 211, the compression amount can be accurately measured with the spring rod 211 as a reference during measurement, thereby further improving the dimensional measurement accuracy of the tubular component to be measured.

[0075] In an exemplary embodiment, since the measuring portion 221 of the measuring ruler 22 is exposed outside the spring rod 211, in order to further improve the dimensional measurement accuracy and measurement efficiency of the tubular component to be measured, the starting scale of the measuring portion 221 can also be aligned with the other end of the spring rod 211, that is, the upper surface of the end of the spring rod 211 away from the support frame 13. For example, if the starting scale of the measuring ruler 22 is 0, then the other end of the spring rod 211, that is, the upper surface of the end of the spring rod 211 away from the support frame 13, is aligned with the straight line where the starting scale of the measuring portion 221 is located. In this way, during the measurement process, after the measuring ruler 22 has finished moving downward along the spring rod 211, the scale at which the measuring ruler 22 slides can be observed, and this scale is the compression amount. For another example, the starting scale of the measuring ruler 22 may not be 0, and is assumed to be A, where A is any value greater than 0. After the measuring ruler 22 finishes moving downward along the spring rod 211, the scale after the measuring ruler 22 slides can be observed. Assuming that the scale is B, where B is any value greater than 0, the compression amount is BA.

[0076] Therefore, by aligning the straight line where the starting position of the measuring portion 221 is located with the upper surface of the other end of the spring rod 211, not only the dimensional measurement accuracy of the tubular component to be measured can be improved, but also the measurement convenience can be improved, thereby improving the measurement efficiency.

[0077] In an optional embodiment, to ensure that the free end of the measuring ruler 22 can contact the bottom of the inner wall of the tubular component to be measured, the shape of the free end of the measuring ruler 22 can be set to match the bottom shape of the tubular component to be measured.

[0078] In one embodiment, when the bottom of the tubular component to be measured is a straight line in a front view, the free end of the measuring ruler 22 can be in the shape of a straight line. Thus, when the sizing tool is inserted into the interior of the tubular component to be measured, the free end of the measuring ruler 22 can directly contact the inner bottom of the tubular component to be measured.

[0079] In another embodiment, when the bottom of the tubular component to be measured is arc-shaped in a front view, the free end of the measuring ruler 22 may be arc-shaped or may be a pointed top.

[0080] Continue as Figure 1 As shown, in an optional embodiment, in order to further enhance the positioning effect of the measurement and improve the dimensional measurement accuracy of the tubular component to be measured, the positioning device may include, in addition to the support frame 13, a positioning protrusion 14 provided on the handle 11. During the measurement process, the top of the tubular component to be measured may be placed on the positioning protrusion 14 so that the outer extension of the positioning protrusion 14 is inscribed with the inner wall of the tubular component to be measured.

[0081] The present embodiment does not limit the specific structure of the positioning protrusion 14, as long as it can be positioned by the top of the tubular component to be tested. For example, the positioning protrusion 14 can be cylindrical so that the outer extension of the positioning protrusion 14 can be inscribed with the inner wall of the tubular component to be tested.

[0082] For example, when the top view of the handle 11 is cross-shaped, the handle 11 is composed of a vertical rod and a horizontal rod intersecting the vertical rod, and two positioning protrusions 14 can be set on both the vertical rod and the horizontal rod, and the distance between the extensions of the two positioning protrusions 14 is equal to the inner diameter of the tubular component to be measured.

[0083] In another optional embodiment, in order to further enhance the positioning effect of the measurement and improve the dimensional measurement accuracy of the tubular component to be measured, the above-mentioned positioning device, in addition to the support frame 13, may also include a slot provided on the handle 11, which is used for inserting the top of the tubular component to be measured during measurement.

[0084] The embodiment of the present application does not limit the specific structure and size of the slot, as long as the top of the tubular component to be tested can be inserted to achieve positioning of the tubular component to be tested.

[0085] For example, when the top view of the handle 11 is cross-shaped, the handle 11 is composed of a vertical rod and a horizontal rod intersecting the vertical rod, and two slots can be set on both the vertical rod and the horizontal rod, and the distance between the two positioning slots is equal to the inner diameter of the tubular component to be measured.

[0086] It should be noted that the embodiment of the present application does not limit the material of the size measuring tool, and the material may be polyvinyl chloride, polytetrafluoroethylene plastic, etc.

[0087] In the following, the process of measuring the dimensions of the tubular component to be measured using a dimension measuring tool is described by taking the positioning device including the support frame 13 and the positioning protrusion 14 and the tubular component to be measured 3 being a quartz tube as an example:

[0088] Assume that the length of the measuring portion of the measuring ruler 22 is L1, the length of the spring rod 211 is L2, and the length of the fixing rod 12 and the supporting frame 13 is L3. L1, L2 and L3 are key dimensional parameters and need to be accurate to 0.1 mm.

[0089] Figure 4 This is a size measurement diagram provided in the embodiment of the present application. Figure 1During measurement, the dimension measuring tool is inserted into the tubular component 3 to be measured, so that the top of the tubular component 3 to be measured is placed on the positioning protrusion 14, and the extension of the positioning protrusion 14 and the extension of the support frame 13 are both inscribed with the interior of the tubular component 3 to be measured. When the free end of the measuring ruler 22 contacts the bottom of the inner wall of the tubular component 3 to be measured, it moves downward along the spring rod 211 under the drive of the spring. After the tubular component 3 to be measured is fixed on the handle 11, the scale of the measuring ruler 22 is read. The scale is the compression amount LX. Therefore, the total length of the quartz tube L6 = (L1+L2+L3)-LX.

[0090] Figure 5 This is a size measurement diagram provided in the embodiment of the present application. Figure 2 In the case where a capillary glass tube 4 is provided in the tubular component 3 to be tested, the size of the capillary glass tube 4 is also a critical size. The capillary glass tube 4 is raised in the tubular component 3 to be tested, and the bottom of the capillary glass tube 4 is flush with the top of the tubular component 3 to be tested. There is a preset distance L4 between the top of the capillary glass tube and the bottom of the inner wall of the quartz tube. This L4 can be accurately read by the measuring part of the measuring ruler 22. Therefore, the length L5 of the capillary glass tube 4 is L6-L4.

[0091] In the following, the process of measuring the dimensions of the tubular component to be measured using a dimension measuring tool is described by taking the positioning device including the support frame 13 and the card slot and the tubular component to be measured 3 being a quartz tube as an example:

[0092] Assume that the length of the measuring part of the measuring ruler 22 is L1, the length of the spring rod 211 is L2, the depth of the card slot is L7, and the length of the fixing rod 12 and the support frame 13 is L2. L1, L2, L3 and L7 are key dimensional parameters and need to be accurate to 0.1 mm.

[0093] During measurement, the measuring tool is inserted into the tubular component 3, allowing the top of the component 3 to engage the slot. When the free end of the measuring ruler 22 contacts the bottom of the inner wall of the component 3, it moves downward along the spring rod 211, driven by the spring. After the component 3 is secured to the handle 11, the scale of the measuring ruler 22 is read. This scale indicates the compression amount, LX. Since the component 3 is partially inserted into the slot, this portion can be considered equal to the slot depth. This portion needs to be included in the length measurement. Therefore, the total length of the quartz tube, L6, = (L1 + L2 + L3) - LX + L7.

[0094] It should be noted that when a capillary glass tube 4 is provided in the tubular component 3 to be tested, the size of the capillary glass tube 4 is also a critical size. The capillary glass tube 4 is raised in the tubular component 3 to be tested, and the bottom of the capillary glass tube 4 is flush with the top of the tubular component 3 to be tested. There is a preset distance L4 between the top of the capillary glass tube 4 and the bottom of the inner wall of the tubular component 3 to be tested. The distance L4 can be accurately read by the measuring part of the measuring ruler 22. Then, the length L5 of the capillary glass tube 4 is L6-L4.

[0095] It should be understood that the present disclosure is not limited to the precise structure described above and shown in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A dimension measuring tool, characterized in that: It includes a positioning structure and a measuring structure, wherein the positioning structure is arranged perpendicular to the measuring structure; The positioning structure includes a fixing frame and a positioning device, wherein the positioning device is arranged on the fixing frame; the outer extension of the positioning device is inscribed in the inner wall of the tubular component to be measured, so as to position the measuring structure; The measuring structure includes an elastic component and a measuring ruler. One end of the elastic component is arranged on the fixing frame, and the other end of the elastic component is connected to the measuring ruler. The free end of the measuring ruler is used to contact the bottom of the inner wall of the tubular component to be measured.

2. The dimension measuring tool according to claim 1, characterized in that: The fixing frame includes a handle and a fixing rod, the positioning device includes a support frame, the handle is vertically arranged at one end of the fixing rod, the support frame is vertically arranged at the other end of the fixing rod, the measuring structure is vertically arranged at the support frame, and one end of the elastic component is arranged on the support frame; The outer extension of the support frame is inscribed in the inner wall of the tubular component to be measured, so as to position the measurement structure.

3. The dimension measuring tool according to claim 2, characterized in that: The positioning device further comprises a positioning protrusion provided on the handle, wherein the outer extension of the positioning protrusion is inscribed in the inner wall of the tubular component to be measured.

4. The dimension measuring tool according to claim 2, characterized in that: The positioning device further comprises a slot provided on the handle, and the slot is used for inserting the top of the tubular component to be measured.

5. The dimension measuring tool according to claim 2, characterized in that: The elastic component includes a spring rod and a spring arranged inside the spring rod, and the spring rod is arranged perpendicular to the support frame; One end of the spring rod and one end of the spring are both arranged on the support frame, and the other end of the spring rod and the other end of the spring are both connected to the measuring ruler.

6. The dimension measuring tool according to claim 5, characterized in that: The measuring ruler includes a measuring part and a non-measuring part, and the measuring part and the non-measuring part are arranged vertically; The measuring portion is located outside the spring rod; The non-measurement portion is arranged on the inner side of the other end of the spring rod, the extension of the non-measurement portion contacts the inner wall of the other end of the spring rod, and the other end of the spring is fixedly connected to the bottom of the non-measurement portion.

7. The dimension measuring tool according to claim 6, characterized in that: The straight line where the starting scale of the measuring part is located is aligned with the upper surface of the other end of the spring rod.

8. The dimension measuring tool according to claim 2, wherein: The support frame is shaped like a cross, a mitre or an X in a top view, and the handle is shaped like a cross, a mitre or an X in a top view; One end of the fixing rod is vertically arranged at the center of the handle, and the other end of the fixing rod is vertically arranged at the center of the supporting frame.

9. The dimension measuring tool according to claim 2, characterized in that: The length of the support frame is equal to the inner diameter of the tubular component to be measured, and the length of the handle is greater than the length of the support frame.

10. The dimension measuring tool according to any one of claims 1 to 9, characterized in that: The shape of the free end of the measuring ruler matches the bottom shape of the tubular component to be measured.

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