Worm gear and worm center distance detection tool and detection equipment

By designing a worm gear center distance gauge, and utilizing a guide module and dial indicator, the center distance of the worm gear can be quickly and accurately detected, solving the problem of high detection cost in existing technologies and improving detection efficiency.

CN223596766UActive Publication Date: 2025-11-25KWUNHING MACHINERY & ELECTRONICS
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Patent Information

Application Number
CN202423291086.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-11-25
Estimated Expiration
2034-12-31

AI Technical Summary

Technical Problem

Existing methods for detecting the center distance of through-hole worm gears rely on machine tools or are cumbersome to manufacture, resulting in high testing costs and inconvenience for batch testing.

Method used

Design a worm gear center distance gauge, including a base, first and second mounting structures, a guide module and a measuring module. The guide module enables rapid and accurate displacement detection of the worm gear, and a dial indicator is used to record the center distance value.

Benefits of technology

It enables rapid and accurate detection of the center distance of worm gears, improving detection efficiency and reducing detection costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a worm gear and worm center distance detection tool and detection equipment. The worm gear and worm center distance detection tool comprises a base, a first installation structure, a guide module, a second installation structure and a measurement module. The first installation structure is fixedly arranged at one end of the base and comprises a first installation shaft, the guiding module and the measuring module are arranged on the base, the conduction direction of the guiding module is perpendicular to the axis of the first installation shaft, and the second installation structure is movably arranged on the guiding module and comprises a second installation shaft. The second mounting shaft is located on one side of the first mounting shaft and extends perpendicular to the first mounting shaft, the second mounting structure can be away from the first mounting structure through the guide module, and the detection end of the measurement module makes contact with the second mounting structure and is used for detecting the displacement distance of the second mounting structure. By installing the to-be-detected product, the second installation shaft moves relative to the first installation shaft, the center distance value of the to-be-detected product can be rapidly and accurately obtained, and the detection efficiency is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of precision machinery manufacturing detection, especially a worm gear center distance gauge and detection equipment. BACKGROUND

[0002] Now in the processing production, there are many through hole worm gear parts, and the center distance of the through hole worm gear is usually detected by using the meshing instrument or the more complex special detection fixture, the former relies on the machine, the latter is troublesome to make and has high production cost, and cannot achieve convenient batch detection, thereby increasing the detection cost. SUMMARY

[0003] The utility model discloses a worm gear center distance gauge, which can accurately read the displacement data generated by the worm gear mounting position during the assembly of the worm gear, quickly and accurately obtain the center distance value, and improve the detection efficiency.

[0004] The utility model also discloses a detection equipment with the worm gear center distance gauge.

[0005] The worm gear center distance gauge according to the first aspect of the utility model comprises:

[0006] a base;

[0007] a first mounting structure fixedly arranged at one end of the base, wherein the first mounting structure comprises a first mounting shaft;

[0008] a guide module arranged on the base, wherein the conduction direction of the guide module is perpendicular to the axis of the first mounting shaft;

[0009] a second mounting structure movably arranged on the guide module, wherein the second mounting structure comprises a second mounting shaft, the second mounting shaft is located on one side of the first mounting shaft and the extension directions of the two are perpendicular, and the second mounting structure can be away from the first mounting structure through the guide module;

[0010] a measurement module arranged on the base, wherein the detection end of the measurement module is in contact with the second mounting structure, and the measurement module is used for detecting the displacement distance of the second mounting structure.

[0011] According to some embodiments of the utility model, the first mounting structure further comprises a first mounting table, the first mounting table comprises a connecting part at the upper end and a mounting part at the lower end, the connecting part and the mounting part are in a stepped structure, the mounting part is connected with the base, and the first mounting shaft is horizontally arranged in the connecting part.

[0012] According to some embodiments of the present application, the first mounting shaft comprises a continuous first connecting section, a first positioning section and a first mounting section, the first positioning section is clamped between the first connecting section and the first mounting section, the first connecting section is threaded on the connecting portion, and the shaft shoulder of the first positioning section is in contact with the side surface of the connecting portion.

[0013] According to some embodiments of the present application, the second mounting structure further comprises a second mounting table, the second mounting table is movably arranged on the guide module, the second mounting shaft is vertically threaded on the second mounting table, and the second mounting table is in contact with the measuring module.

[0014] According to some embodiments of the present application, the second mounting shaft comprises a continuous second connecting section, a second positioning section and a second mounting section, the second positioning section is clamped between the second connecting section and the second mounting section, the second connecting section is threaded on the second mounting table, and the second positioning section is connected with the upper end surface of the second mounting table.

[0015] According to some embodiments of the present application, the guide module comprises a guide rail arranged on the base, a sliding block movably arranged on the guide rail, first and second pressing assemblies of the same structure arranged side by side on both sides of the guide rail, and the upper end surfaces of the guide rail, the first pressing assembly and the second pressing assembly are flush, and the second mounting table is arranged on the sliding block, the first pressing assembly and the second pressing assembly.

[0016] According to some embodiments of the present application, the first pressing assembly comprises a first positioning table, a guide shaft, an elastic body, a guide sleeve and a second positioning table, the first positioning table and the second positioning table are connected with the guide shaft, the guide sleeve and the elastic body are threaded on the guide shaft in sequence, the elastic body is clamped between the guide sleeve and the second positioning table, a bayonet is arranged on the guide sleeve, and the guide sleeve is connected with the second mounting table through the bayonet.

[0017] According to some embodiments of the present application, a connecting piece is further arranged on the base, a connecting long slot is arranged on the connecting piece, and the connecting piece is connected with the measuring module through the connecting long slot.

[0018] According to some embodiments of the present application, the measuring module comprises a fixed table and a dial indicator, the fixed table is connected with the base through the connecting piece, the dial plate of the dial indicator is arranged on the fixed table, and the measuring head of the dial indicator is in contact with the vertical surface of the tail end of the second mounting table.

[0019] The detection equipment according to the second aspect of the present application comprises the device according to the first aspect of the present application.

[0020] The detection equipment has at least the following beneficial effects: when the worm gear is assembled, the displacement data generated by the worm gear installation position is accurately read, the center distance value is quickly and accurately obtained, and the detection efficiency is improved.

[0021] The additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description, or be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is a schematic assembly structure diagram of the worm gear center distance gauge after placing the product to be measured according to the worm gear center distance gauge embodiment of the present application;

[0024] Figure 2 is another angle of the schematic assembly structure diagram of the worm gear center distance gauge after placing the product to be measured according to the worm gear center distance gauge embodiment of the present application;

[0025] Figure 3 is an explosion view of the schematic assembly structure diagram of the worm gear center distance gauge according to the worm gear center distance gauge embodiment of the present application;

[0026] Figure 4 is a schematic assembly structure diagram of the guide module and the base of the worm gear center distance gauge according to the worm gear center distance gauge embodiment of the present application.

[0027] Reference signs:

[0028] The base 100, the first groove 110,

[0029] The first mounting structure 200, the first mounting shaft 210, the first connecting section 211, the first positioning section 212, the first mounting section 213, the first mounting table 220, the connecting part 221, the mounting part 222,

[0030] The guide module 300, the guide rail 310, the sliding block 320, the first pressing assembly 330, the first positioning table 331, the guide shaft 332, the elastic body 333, the guide sleeve 334, the bayonet 3341, the second positioning table 335, the second pressing assembly 340,

[0031] The second mounting structure 400, the second mounting shaft 410, the second connecting section 411, the second positioning section 412, the second mounting section 413, the second mounting table 420,

[0032] The measurement module 500, the fixed table 510, the dial indicator 520,

[0033] The connecting piece 600, the connecting long slot 610. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0035] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, features limited by "first" and "second" can explicitly or implicitly include one or more of the features.

[0036] In the description of the present application, unless otherwise explicitly limited, the words "set", "install", "connect", "connected", and the like should be broadly understood, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0037] The following will be described with reference to Figures 1 to 4 A worm gear center distance gauge according to an embodiment of the present application is described.

[0038] As shown in Figure 1 and Figure 3 A worm gear center distance gauge according to an embodiment of the present application is described. The worm gear center distance gauge comprises a base 100, a first mounting structure 200, a guide module 300, a second mounting structure 400, and a measurement module 500. The first mounting structure 200 is fixedly arranged at one end of the base 100, and the first mounting structure 200 comprises a first mounting shaft 210. The guide module 300 is arranged on the base 100, and the transmission direction of the guide module 300 is perpendicular to the axis of the first mounting shaft 210. The second mounting structure 400 is movably arranged on the guide module 300, and the second mounting structure 400 comprises a second mounting shaft 410. The second mounting shaft 410 is located on one side of the first mounting shaft 210 and the extension directions of the two are perpendicular. The second mounting structure 400 can move away from the first mounting structure 200 through the guide module 300. The measurement module 500 is arranged on the base 100, and the detection end of the measurement module 500 is in contact with the second mounting structure 400, for detecting the displacement distance of the second mounting structure 400.

[0039] When testing the product, the worm product to be tested can be installed on the first mounting shaft 210, and the matched worm gear product to be tested can be installed on the second mounting shaft 410, or the worm gear product to be tested can be installed on the first mounting shaft 210, and the matched worm product to be tested can be installed on the second mounting shaft 410. The mutual position exchange of the matched worm gear products on the first mounting shaft 210 and the second mounting shaft 410 does not affect the center distance test between the worm gear.

[0040] As shown in Figure 1 and Figure 3 , the following is illustrated by installing the worm product to be tested on the first mounting shaft 210 and installing the matched worm gear product to be tested on the second mounting shaft 410.

[0041] After the testing tool is installed with the product to be tested, because the center distance of the worm gear product to be tested is greater than the initial distance between the first mounting shaft 210 and the second mounting shaft 410, the second mounting structure 400 is away from the first mounting structure 200 through the guide module 300. In this embodiment, the measuring module 500 is a dial gauge assembly in a precision instrument, and when the second mounting structure 400 is away from the first mounting structure 200, the tail end of the second mounting structure 400 extrudes the measuring head of the dial gauge perpendicularly to the side surface in the transmission direction, and the dial gauge can accurately record the displacement of the second mounting structure 400. Thus, the center distance of the worm gear product to be tested is obtained as the horizontal distance from the axis of the first mounting shaft 210 to the axis of the second mounting shaft 410 plus the displacement distance of the second mounting structure 400. The center distance of the worm gear product to be tested is quickly and accurately calculated. After the product is removed, the second mounting structure 400 is reset to the original position through the guide module 300.

[0042] In some specific embodiments of the utility model, the first mounting structure 200 further includes a first mounting table 220, the first mounting table 220 includes a connecting part 221 at the upper end and a mounting part 222 at the lower end, the connecting part 221 and the mounting part 222 are in a stepped structure, the mounting part 222 is connected with the base 100, and the first mounting shaft 210 is horizontally arranged in the connecting part 221.

[0043] As shown in Figure 1 and Figure 2 , in this embodiment, the width of the connecting part 221 in the front-back direction is less than the width of the mounting part 222 in the front-back direction, and the front side surface of the connecting part 221 is on the same plane as the front side surface of the mounting part, so that the first mounting table 220 is in a stepped structure. The stepped structure of the first mounting table 220 can place a larger product to be tested on the first mounting shaft 210 on the connecting part 221, thereby improving the applicability. The stepped structure of the first mounting table 220 also makes the overall testing tool more compact, effectively reduces the space occupation, and facilitates the storage and arrangement.

[0044] In some specific embodiments of the present application, the first mounting shaft 210 comprises a continuous first connecting section 211, a first positioning section 212 and a first mounting section 213, the first positioning section 212 is clamped between the first connecting section 211 and the first mounting section 213, the first connecting section 211 is threaded on the connecting portion 221, and the shaft shoulder of the first positioning section 212 is in contact with the side surface of the connecting portion 221.

[0045] Referring to Figure 1 and Figure 3 , in the present embodiment, the first mounting shaft 210 is divided into three sections, from front to back, the first connecting section 211, the first positioning section 212 and the first mounting section 213, the worm or the worm in the product to be measured can be placed on the first mounting section 213, the first positioning section 212 has the largest cross section in the first mounting shaft 210, the first positioning section 212 can position the connection depth of the first connecting section 211 in the connecting portion 221, and the first positioning section 212 can position and limit the connection depth of the product to be measured and the first mounting section 213.

[0046] It can be understood that the size of the first mounting section 213 is consistent with the size of the inner hole of the product to be measured.

[0047] In some specific embodiments of the present application, the second mounting structure 400 further comprises a second mounting table 420, the second mounting table 420 is movably arranged on the guide module 300, the second mounting shaft 410 is vertically threaded on the second mounting table 420, and the second mounting table 420 is in contact with the measuring module 500.

[0048] Referring to Figure 1 and Figure 2 , in the present embodiment, the second mounting table 420 can carry the second mounting shaft 410, and when the product to be measured is installed, the second mounting shaft 410 is driven to displace towards the measuring module 500.

[0049] In some specific embodiments of the present application, the second mounting shaft 410 comprises a continuous second connecting section 411, a second positioning section 412 and a second mounting section 413, the second positioning section 412 is clamped between the second connecting section 411 and the second mounting section 413, the second connecting section 411 is threaded on the second mounting table 420, and the second positioning section 412 is connected with the upper end surface of the second mounting table 420.

[0050] Referring to Figure 1 and Figure 3As shown, in the embodiment, the second mounting shaft 410 is divided into three sections, from top to bottom, the second mounting section 413, the second positioning section 412 and the second connecting section 411, the worm or the worm gear in the product to be tested can be placed on the second mounting section 413, the second positioning section 412 has the largest cross section in the second mounting shaft 410, the second positioning section 412 enables the second mounting shaft 410 to be stably mounted on the second mounting table 420, and the length of the second positioning section 412 determines the mounting height of the product to be tested.

[0051] It can be understood that the size of the second mounting section 413 is consistent with the size of the inner hole of the product to be tested.

[0052] In some specific embodiments of the utility model, the guide module 300 includes a guide rail 310 arranged on the base 100, a sliding block 320 movably arranged on the guide rail 310, and first and second pressing assemblies 330 and 340 of the same structure arranged side by side on both sides of the guide rail 310, the upper end surfaces of the guide rail 310, the first pressing assembly 330 and the second pressing assembly 340 are flush, and the second mounting table 420 is arranged on the sliding block 320, the first pressing assembly 330 and the second pressing assembly 340.

[0053] Referring to Figure 1 and Figure 4 As shown, in the embodiment, the guide rail 310 and the sliding block 320 can accurately guide the horizontal displacement of the second mounting structure 400, the first pressing assembly 330 and the second pressing assembly 340 can ensure the accuracy of displacement, thereby ensuring the accuracy of the values obtained by the test module 500. The upper end surfaces of the guide rail 310, the first pressing assembly 330 and the second pressing assembly 340 are flush, which makes it more convenient to install the gauge as a whole. The parallel design of the guide rail 310, the first pressing assembly 330 and the second pressing assembly 340 enables the second mounting table 420 to displace more stably. The consistent structure of the first pressing assembly 330 and the second pressing assembly 340 enhances interchangeability and facilitates maintenance and replacement of parts. The consistent size of the first pressing assembly 330 and the second pressing assembly 340 enables the pressure on both sides of the second mounting table 420 to be consistent, thereby enabling the second mounting table 420 to displace more stably. It can be understood that the guide structure of the guide rail 310 and the sliding block 320 can also use a ball screw, hydraulic or pneumatic structure.

[0054] In some specific embodiments of the utility model, first compression assembly 330 includes first positioning table 331, guide shaft 332, elastomer 333, guide sleeve 334 and second positioning table 335, first positioning table 331 with second positioning table 335 is provided with guide shaft 332 connection, guide shaft 332 is sequentially provided with guide sleeve 334 and elastomer 333, elastomer 333 is clamped between guide sleeve 334 and second positioning table 335, guide sleeve 334 is provided with bayonet 3341, guide sleeve 334 is connected with second mounting table 420 through bayonet 3341.

[0055] Referring to Figure 1 And Figure 4 It is shown in the embodiment that guide sleeve 334 can be stably connected with second mounting table 420 through bayonet 3341, and elastomer 333 is a spring, which ensures the displacement accuracy of second mounting table 420 by compressing guide sleeve 334, thereby ensuring the accuracy of the displayed value on measurement module 500. It can be understood that when no product is placed, elastomer 333 is in a compressed state, which can ensure good measurement accuracy, and elastomer 333 can also be rubber, a pneumatic device, a hydraulic device or other structures that can have a certain pressure.

[0056] In some specific embodiments of the utility model, connecting piece 600 is arranged on base 100, and connecting long groove 610 is arranged on connecting piece 600, and connecting piece 600 is connected with measurement module 500 through connecting long groove 610.

[0057] Referring to Figure 1 It is shown in the embodiment that connecting piece 600 is arranged at the right front of base 100, and the shape of connecting piece 600 is L-shaped, one side of connecting piece 600 is provided with connecting long groove 610 to connect measurement module 500, and the other side of connecting piece 600 is fixed on base 100. Measurement module 500 is connected with connecting piece in the mode of connecting long groove 610, so that the position of measurement module 500 can be adjusted in the left-right direction in connecting long groove 610, and the recorded data of measurement module 500 is more accurate.

[0058] In some specific embodiments of the utility model, measurement module 500 includes fixing table 510 and dial indicator 520, fixing table 510 is connected with base 100 through connecting piece 600, the dial of dial indicator 520 is arranged on fixing table 510, and the measuring head of dial indicator 520 is in contact with the vertical surface of the tail end of second mounting table 420.

[0059] Referring to Figure 1 And Figure 3As shown, in the embodiment, the extension line of the dial gauge 520 probe is perpendicular to the tail end vertical surface of the second mounting table 420, when the second mounting table 420 starts to displace, the tail end vertical surface of the second mounting table 420 horizontally presses the dial gauge 520 probe, the dial gauge 520 can accurately detect the displacement size caused by the pressing, the front side of the fixed table 510 is connected with the base 100 through the connecting piece 600, the fixed table 510 is placed on the guide module 300, so that the whole gauge is more compact, the space occupation is reduced, and the storage is regular. It can be understood that the fixed table 510 is not fixedly connected with the guide module 300, and the fixed table 510 is not necessarily placed on the guide module 300, but can also be directly placed on the base 100. The dial gauge 520 can also use precision measuring instruments such as micrometers and millimeters according to the required measurement accuracy.

[0060] The utility model embodiment further discloses a detection equipment, including worm gear center distance gauge of above.

[0061] The worm product or the worm wheel product to be measured is installed on the first mounting shaft 210, and the matched worm wheel product or the worm product to be measured is installed on the second mounting shaft 410, because the center distance of the worm wheel product to be measured is greater than the initial distance between the first mounting shaft 210 and the second mounting shaft 410, the second mounting structure 400 is away from the first mounting structure 200 through the guide module 300. When the second mounting structure 400 is away from the first mounting structure 200, the measuring module 500 is pressed, and the measuring module 500 accurately records the displacement size of the second mounting structure 400. Thus, the center distance of the worm wheel product to be measured is obtained, which is the distance from the first mounting shaft 210 to the second mounting shaft 410 plus the displacement distance of the second mounting structure 400. The center distance of the worm wheel product is quickly and accurately calculated. After the product is removed, the second mounting structure 400 is reset to the original position through the guide module 300.

[0062] The utility model embodiment has been described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiment, and various changes can be made within the knowledge range possessed by ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A worm-and-gear center distance gauge, characterized by, The utility model relates to a kind of installation structure, including: Base (100); First mounting structure (200), the first mounting structure (200) is fixedly arranged in one end of the base (100), and the first mounting structure (200) includes first mounting shaft (210); Guide module (300), the guide module (300) is arranged on the base (100), and the conduction direction of the guide module (300) is perpendicular to the axis of the first mounting shaft (210); Second mounting structure (400), the second mounting structure (400) is movably arranged on the guide module (300), and the second mounting structure (400) includes second mounting shaft (410), the second mounting shaft (410) is located on the side of the first mounting shaft (210) and the extending direction of both is perpendicular, and the second mounting structure (400) can be away from the first mounting structure (200) by the guide module (300); Measurement module (500), the measurement module (500) is arranged on the base (100), and the detection end of the measurement module (500) is in contact with the second mounting structure (400), for detecting the displacement distance of the second mounting structure (400).

2. A center distance gauge for worm gears as set forth in claim 1, wherein, The first mounting structure (200) further includes first mounting table (220), the first mounting table (220) includes connecting portion (221) located at upper end and installation portion (222) located at lower end, the connecting portion (221) and the installation portion (222) are in ladder structure, the installation portion (222) is connected with the base (100), and the first mounting shaft (210) is horizontally arranged in the connecting portion (221).

3. A worm-and-gear center distance gauge according to claim 2, wherein, The first mounting shaft (210) includes continuous first connecting section (211), first positioning section (212) and first mounting section (213), the first positioning section (212) is clamped between the first connecting section (211) and the first mounting section (213), the first connecting section (211) is arranged in the connecting portion (221), and the shaft shoulder of the first positioning section (212) is in contact with the side surface of the connecting portion (221).

4. The worm-and-gear center distance gauge according to claim 1, wherein The second mounting structure (400) further includes second mounting table (420), the second mounting table (420) is movably arranged on guide module (300), the second mounting shaft (410) is vertically arranged in the second mounting table (420), and the second mounting table (420) is in contact with the measurement module (500).

5. A worm-and-gear center distance gauge according to claim 4, wherein The second mounting shaft (410) includes continuous second connecting section (411), second positioning section (412) and second mounting section (413), the second positioning section (412) is clamped between the second connecting section (411) and the second mounting section (413), the second connecting section (411) is arranged in the second mounting table (420), and the second positioning section (412) is connected with the upper end surface of the second mounting table (420).

6. A worm-and-gear center distance gauge according to claim 4, wherein The guide module (300) comprises a guide rail (310) arranged on the base (100), a sliding block (320) movably arranged on the guide rail (310), first and second pressing assemblies (330, 340) of the same structure arranged on both sides of the guide rail (310), and upper end faces of the guide rail (310), the first pressing assembly (330) and the second pressing assembly (340) being flush, and the second mounting table (420) being arranged on the sliding block (320), the first pressing assembly (330) and the second pressing assembly (340).

7. A worm-and-gear center distance gauge according to claim 6, wherein The first pressing assembly (330) comprises first and second positioning tables (331, 335), a guide shaft (332), an elastic body (333) and a guide sleeve (334), the first and second positioning tables (331, 335) being connected by the guide shaft (332), the guide sleeve (334) and the elastic body (333) being sequentially arranged on the guide shaft (332), the elastic body (333) being clamped between the guide sleeve (334) and the second positioning table (335), and the guide sleeve (334) being connected with the second mounting table (420) by a bayonet (3341) arranged on the guide sleeve (334).

8. A worm-and-gear center distance gauge according to claim 7, wherein, The measuring module (500) comprises a fixed table (510) and a dial indicator (520), the fixed table (510) being connected with the base (100) by the connecting piece (600), the dial plate of the dial indicator (520) being arranged on the fixed table (510), and the measuring head of the dial indicator (520) being in contact with the vertical surface at the tail end of the second mounting table (420).

9. A worm-and-gear center distance gauge according to claim 8, wherein, The worm and gear center distance gauge comprises the worm and gear center distance gauge according to any one of claims 1 to 9.

10. A detection device, characterized by The worm and gear center distance gauge comprises the worm and gear center distance gauge according to any one of claims 1 to 9.