Length measuring instrument

Abstract

The utility model discloses a length measuring instrument, comprising a calibration block calibration rod, the front part of the lower end part of the calibration block calibration rod is fixedly connected with a universal reference shaft, and the rear part of the lower end part of the calibration block calibration rod is fixedly connected with a vertical calibration block; the supports are symmetrically arranged and fixedly connected to the outer side of the universal reference shaft, the middle of the front end of each support is movably sleeved with an adjustable telescopic rod, and the upper portion of one adjustable telescopic rod is movably connected with a dial indicator; the scale marks are formed in the middle of the front face of the adjustable telescopic rod at equal intervals; and the end part of the carbon fiber fixing rod is sleeved with and extends out of the universal reference shaft and the bracket. The utility model relates to a length measuring instrument, in particular to a length measuring instrument for a large-diameter rotary body, and aims to solve the problems that an existing length measuring instrument for a large-diameter rotary body adopts a measuring mode of a dial indicator to measure the width of an inner cavity, however, manual handheld operation is generally adopted in the process of measuring by using the dial indicator, a benchmark is lacked, errors of a detection result are extremely large, and actual detection accuracy is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of length measurement of large-diameter rotating bodies, in particular to a length measuring instrument. Background Art

[0002] The large diameter rotor is used to simulate the effect of gravity on organisms. It consists of a huge rotating structure that can generate high centrifugal force, exposing the tested sample or organism to a high gravity environment. During production and processing, its length needs to be measured to detect whether it meets the qualified standards.

[0003] However, it still has the following disadvantages in actual use:

[0004] The existing length measuring instrument for large diameter rotating bodies uses a micrometer to measure the inner cavity width. However, in the process of using the micrometer to measure, it is generally done manually by hand and lacks a reference, which can easily cause large errors in the test results and affect the actual test accuracy. Utility Model Content

[0005] Technical solutions to be solved

[0006] The purpose of the utility model is to provide a length measuring instrument to solve the problem raised in the above background technology that the existing length measuring instrument for large-diameter rotating bodies uses a micrometer to measure the width of the inner cavity, but in the process of using the micrometer to measure, it is generally done by manual hand-held operation and lacks a reference, which can easily cause a large error in the detection result and affect the actual detection accuracy.

[0007] Technical Solution

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model is a length measuring instrument, comprising:

[0010] A calibration block calibration rod, wherein the front portion of the lower end portion of the calibration block calibration rod is fixedly connected to a universal reference shaft, and the rear portion of the lower end portion of the calibration block calibration rod is fixedly connected to a vertical calibration block;

[0011] The bracket is a set of symmetrically arranged brackets fixedly connected to the outer side of the universal reference shaft, the front end middle part of the bracket is movably sleeved with an adjustable telescopic rod, and the upper part of one of the adjustable telescopic rods is movably connected with a micrometer;

[0012] Graduation lines, the graduation lines being equidistantly arranged in the middle of the front side of the adjustable telescopic rod;

[0013] A carbon fiber fixing rod, the end of which is sleeved and extends out of the universal reference shaft and the bracket.

[0014] Furthermore, the rear portion of the adjustable telescopic rod is clamped and connected with a positioning frame, and the rear portion of the upper end of the positioning frame is provided with a positioning groove.

[0015] Furthermore, the upper middle section of the adjustable telescopic rod is an opening, and the lower part of the opening is a circular opening that penetrates the adjustable telescopic rod, and the upper part is a threaded adjustment bolt;

[0016] The front end of the micrometer extends into the circular opening.

[0017] Furthermore, a material rack is connected to the calibration rod of the calibration block through an internal thread in the middle, and the material rack is threadedly connected to the calibration rod of the calibration block through a locking column at the rear end.

[0018] Furthermore, a notch is provided in the middle of the calibration rod of the calibration block, and a damping device is provided between an inner wall of the notch and an outer surface of the rear end of the material rack.

[0019] Furthermore, the universal reference shaft comprises a transverse block whose upper end and rear part are respectively fixed to the calibration block calibration rod and the vertical calibration block, and a reference shaft body movably connected to the middle part of the lower end of the transverse block.

[0020] Furthermore, a universal ball shaft is fixedly connected to the middle part of the upper end of the reference shaft body, and the upper part of the universal ball shaft is movably connected to a circular hole opened in the middle part of the lower end of the transverse block.

[0021] Beneficial Effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] The utility model is provided with a universal reference shaft, a vertical calibration block, and a calibration block calibration rod. The calibration block calibration rod is used to perform position calibration processing on the vertical calibration block, and the universal calibration shaft is calibrated by the vertical calibration block. The universal calibration shaft cooperates with the carbon fiber fixing rod and the micrometer is structurally connected to the micrometer via the adjustable telescopic rod. The calibrated micrometer helps to improve the detection accuracy and is convenient for use.

[0024] And it is provided with scale lines and positioning frames, through which the workpiece to be measured can be positioned and fixed, so that its height can be measured through the adjustable telescopic rod in conjunction with the scale lines, thereby improving the applicability and functionality of the structure and meeting the use requirements.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a front view of the utility model;

[0028] Figure 2 It is a rear view of the utility model;

[0029] Figure 3 This is a structural diagram of the universal reference shaft of the utility model.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Calibration block calibration rod; 2. Universal reference shaft; 21. Horizontal block; 22. Reference shaft body; 23. Universal ball shaft; 3. Vertical calibration block; 4. Carbon fiber fixing rod; 5. Bracket; 6. Adjustable telescopic rod; 7. Micrometer; 8. Scale line; 9. Positioning frame; 10. Adjustment bolt; 11. Material rack; 12. Locking column. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0034] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Example

[0036] See also Figure 1-3 As shown, this embodiment is a length measuring instrument, comprising:

[0037] A calibration block calibration rod 1, a universal reference shaft 2 is fixedly connected to the front of the lower end of the calibration block calibration rod 1, and a vertical calibration block 3 is fixedly connected to the rear of the lower end of the calibration block calibration rod 1;

[0038] The calibration block calibration rod 1 is used to structurally support and install the vertical calibration block 3 and the universal reference shaft 2, and is used to calibrate the vertical calibration block 3, and the vertical calibration block 3 is used to calibrate the universal reference shaft 2;

[0039] The bracket 5 is symmetrically arranged and fixedly connected to the outer side of the universal reference shaft 2. The middle part of the front end of the bracket 5 is movably sleeved with an adjustable telescopic rod 6, and the upper part of one adjustable telescopic rod 6 is movably connected with a micrometer 7;

[0040] The bracket 5 is used to support and install the adjustable telescopic rod 6. The adjustable telescopic rod 6 is used to measure the height of the workpiece in cooperation with the scale line 8, and the micrometer 7 is used to measure the width of the inner cavity of the workpiece.

[0041] Graduation lines 8 are equidistantly arranged in the middle of the front side of the adjustable telescopic rod 6;

[0042] The scale line 8 is used to indicate the height of the workpiece being measured;

[0043] A carbon fiber fixing rod 4, the end of which is sleeved and extends out of the universal reference shaft 2 and the bracket 5;

[0044] The carbon fiber fixing rod 4 fixes the structure of the bracket 5 to fix the structure of the adjustable telescopic rod 6;

[0045] The rear portion of the adjustable telescopic rod 6 is connected to a positioning frame 9, and the upper rear portion of the positioning frame 9 is provided with a positioning slot;

[0046] The positioning frame 9 cooperates with the positioning groove provided on the upper part to structurally fix the workpiece to be measured in height;

[0047] The middle section of the upper part of the adjustable telescopic rod 6 is an opening, and the lower part of the opening is a circular opening that penetrates the adjustable telescopic rod 6, and the upper part is a threaded adjustment bolt 10;

[0048] The front end of the micrometer 7 extends into the circular opening;

[0049] The round mouth receives the front end of the micrometer 7, and the adjusting bolt 10 is locked by rotation, and the opening that is opened and closed can adjust the tightness of the front end of the micrometer 7 in the round mouth to meet the measurement requirements;

[0050] The calibration rod 1 of the calibration block is internally threadedly connected with a material rack 11, and the material rack 11 is threadedly connected to the calibration rod 1 of the calibration block through a locking column 12 at the rear end;

[0051] The locking column 12 screws the material rack 11, and the material rack 11 is used to place the tooling to be measured for subsequent measurement operations;

[0052] The middle part of the calibration block calibration rod 1 is a slot, and a damping device is provided between the inner side wall of the slot and the rear end outer surface of the material rack 11;

[0053] The notch supports the material rack 11 structurally, and through the damping force, the material rack 11 to be fixed by the thread can be preliminarily fixed in structure, which is convenient for the subsequent thread locking process;

[0054] The universal reference shaft 2 comprises a transverse block 21 whose upper end and rear part are respectively fixed to the calibration block calibration rod 1 and the vertical calibration block 3, and a reference shaft body 22 movably connected to the middle part of the lower end of the transverse block 21;

[0055] A universal ball shaft 23 is fixedly connected to the middle of the upper end of the reference shaft body 22, and the upper part of the universal ball shaft 23 is movably connected to the circular hole opened in the middle of the lower end of the transverse block 21;

[0056] The movably connected universal ball shaft 23 and the circular hole movably connect the transverse block 21 and the reference shaft body 22, which is conducive to universal position adjustment, and the reference shaft body 22 receives the carbon fiber fixing rod 4 for position calibration of the micrometer 7;

[0057] Working principle:

[0058] In advance, one end of the material rack 11 is placed in the middle of the calibration block calibration rod 1, and is bolted and fixed by the locking column 12. The vertical calibration block 3 and the universal reference shaft 2 are respectively fixed at the front and rear positions of the lower end of the calibration block calibration rod 1, and the end of the carbon fiber fixing rod 4 is extended out of the universal reference shaft 2, and the bracket 5 is sleeved on the extended part, and the upper part of the adjustable telescopic rod 6 is sleeved in the front part of the bracket 5;

[0059] At this time, the front end of the micrometer 7 is extended out of the upper circular opening of the adjustable telescopic rod 6, and the adjusting bolt 10 is tightened to fix the structure;

[0060] Next, when measuring the inner cavity of the workpiece, the workpiece to be measured can be placed on the material rack 11, and the micrometer 7 can be used for measurement. If the height of the workpiece is measured, the workpiece to be measured can be placed in the positioning groove opened at the upper end of the positioning rack 9, and the structure can be fixed, and the adjustable telescopic rod 6 can be used in conjunction with the scale line 8;

[0061] This step can improve the accuracy of the test results and enhance the applicability and functionality of the structure.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A length measuring instrument, characterized in that: include: A calibration block calibration rod (1), wherein the front portion of the lower end of the calibration block calibration rod (1) is fixedly connected to a universal reference shaft (2), and the rear portion of the lower end of the calibration block calibration rod (1) is fixedly connected to a vertical calibration block (3); The bracket (5) is a set of symmetrically arranged brackets (5) and is closely connected to the outer side of the universal reference shaft (2). The front middle part of the bracket (5) is movably sleeved with an adjustable telescopic rod (6), and the upper part of one of the adjustable telescopic rods (6) is movably connected with a micrometer (7). Graduation lines (8), the graduation lines (8) being arranged at equal intervals in the middle of the front side of the adjustable telescopic rod (6); A carbon fiber fixing rod (4), the end of which is sleeved and extends out of the universal reference shaft (2) and the bracket (5).

2. A length measuring instrument according to claim 1, characterized in that: The rear portion of the adjustable telescopic rod (6) is connected to a positioning frame (9) by clamping, and a positioning groove is provided at the rear portion of the upper end of the positioning frame (9).

3. A length measuring instrument according to claim 1, characterized in that: The middle section of the upper part of the adjustable telescopic rod (6) is an opening, and the lower part of the opening is a circular opening that penetrates the adjustable telescopic rod (6), and the upper part is an adjusting bolt (10) that is threadedly connected; The front end of the micrometer (7) extends into the circular opening.

4. A length measuring instrument according to claim 1, characterized in that: The calibration block calibration rod (1) is internally threadedly connected to a material rack (11), and the material rack (11) is threadedly connected to the calibration block calibration rod (1) via a locking column (12) at the rear end.

5. A length measuring instrument according to claim 1, characterized in that: A notch is provided in the middle of the calibration block calibration rod (1), and a damping arrangement is provided between the inner side wall of the notch and the rear end outer surface of the material rack (11).

6. A length measuring instrument according to claim 1, characterized in that: The universal reference shaft (2) comprises a transverse block (21) whose upper end and rear part are respectively fixed to the calibration block calibration rod (1) and the vertical calibration block (3), and a reference shaft body (22) movably connected in the middle part of the lower end of the transverse block (21).

7. A length measuring instrument according to claim 6, characterized in that: A universal ball shaft (23) is fixedly connected to the middle of the upper end of the reference shaft body (22), and the upper part of the universal ball shaft (23) is movably connected to a circular hole opened in the middle of the lower end of the transverse block (21).

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