Vernier caliper inner measuring jaw and main caliper base surface verticality detection device and method

Abstract

The invention discloses a vernier caliper inner measuring jaw and main scale base surface verticality detection device, the device comprises limiting modules and a measurement module, the two ends of the measurement module are respectively provided with the limiting module, the measurement module comprises a right angle segment, the limiting module comprises a first limiting plate and a second limiting plate, and the first limiting plate and the second limiting plate are arranged on the right angle segment. A first limiting plate and a second limiting plate are arranged at the two ends of the right-angle section respectively, the thickness of the first limiting plate and the thickness of the second limiting plate are larger than that of the right-angle section, the first limiting plate and the second limiting plate are perpendicularly arranged, and the thickness of the first limiting plate is smaller than that of the second limiting plate. And the horizontal distance between the first limiting plate and the second limiting plate is greater than the horizontal distance between the measuring surface of the inner measuring claw and the measuring surface of the outer measuring claw of the main caliper of the vernier caliper. The device can efficiently detect whether the inner measuring jaw of the vernier caliper is perpendicular to the base surface of the main caliper, thereby guaranteeing the detection precision of the vernier caliper.

Description

Technical Field

[0001] The invention belongs to the technical field of shipbuilding, and in particular relates to a device and method for checking the perpendicularity between an inner measuring jaw of a vernier caliper and a main scale base surface. Background Art

[0002] The shipbuilding process involves machining of parts. Vernier calipers are used as instruments for detecting machining dimensions. Whether the verticality of the inner jaws and the main scale base surface can meet the requirements directly affects the accuracy of the detection dimensions. Currently, there are no suitable detection tools and methods. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and provide a method for checking the perpendicularity of the inner measuring jaws of a vernier caliper and the base surface of the main scale. The present invention can efficiently detect whether the inner measuring jaws of a vernier caliper are perpendicular to the base surface of the main scale, thereby ensuring the detection accuracy of the vernier caliper.

[0004] In order to achieve the above invention purpose, the technical solution provided by the present invention is as follows:

[0005] A device for checking the perpendicularity of the inner measuring jaw of a vernier caliper and the base surface of a main scale, the device comprising a limit module and a measuring module, wherein the limit modules are respectively provided at both ends of the measuring module, the measuring module comprising a right-angle section, the limit module comprising a first limit plate and a second limit plate, and the first limit plate and the second limit plate are respectively provided at both ends of the right-angle section, the thickness of the first limit plate and the second limit plate is greater than the thickness of the right-angle section, the first limit plate and the second limit plate are vertically arranged, the thickness of the first limit plate is less than the thickness of the second limit plate, and the horizontal distance between the first limit plate and the second limit plate is greater than the horizontal distance between the measuring surface of the inner measuring jaw and the measuring surface of the outer measuring jaw of the main scale of the vernier caliper.

[0006] Furthermore, the right-angle section as a whole is an L-shaped plate, and the length direction of the first limiting plate is the same as the length direction of one end of the right-angle section. When the first limiting plate is installed, one side of the first limiting plate is aligned with one side of the right-angle section, and the other side of the first limiting plate extends out of the right-angle section; the width of the second limiting plate at the other end of the right-angle section is the same as the width of the other end of the right-angle section.

[0007] Furthermore, the difference in thickness between the first limiting plate and the second limiting plate is greater than the thickness of the main scale of the vernier caliper.

[0008] Furthermore, the flatness of the right end surface of the first limiting plate is not greater than 0.01 mm, and the verticality error between the first limiting plate and the second limiting plate is not greater than 0.005 mm.

[0009] A method for checking the perpendicularity between the inner jaws of a vernier caliper and the base surface of a main scale, the method specifically comprising the following steps:

[0010] S1, disassembling the main scale of the vernier caliper to be inspected from the vernier caliper and cleaning the main scale;

[0011] S2: Place the main scale of the vernier caliper into the inspection device so that the main scale plane is aligned with the end face of the right-angle segment. The outer measuring jaws of the main scale are connected to the right side of the first limit plate, and the inner measuring jaws of the main scale are connected to the left side of the second limit plate.

[0012] S3: Fit the lower base surface of the main scale of the vernier caliper to the upper side surface of the second limit plate, and move the vernier caliper horizontally to the left so that the measuring surface of the inner measuring jaw of the vernier caliper is tightly connected to the right side surface of the first limit plate. Use a feeler gauge to measure the surface gap between the inner measuring jaw and the right side surface of the first limit plate.

[0013] S4. Correct the verticality of the vernier caliper according to the measured gap data so that the verticality of the vernier caliper meets the requirements. Then reinstall the vernier caliper to complete the verticality test of the vernier caliper.

[0014] Based on the above technical solution, the method for checking the perpendicularity between the inner jaws of a vernier caliper and the main scale base surface has achieved the following technical advantages through practical application:

[0015] 1. The device for checking the perpendicularity between the inner measuring jaws of a vernier caliper and the base surface of a main scale of the present invention can efficiently detect whether the inner measuring jaws of a vernier caliper are perpendicular to the base surface of the main scale, thereby ensuring the detection accuracy of the vernier caliper.

[0016] 2. The device for checking the perpendicularity between the inner measuring jaws of a vernier caliper and the main scale base surface of the present invention can be quickly checked and corrected by a detection device during the shipbuilding process, thereby improving the efficiency of dimensional inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a diagram showing the inspection state of a vernier caliper in a device for inspecting the perpendicularity between the inner measuring jaws of the vernier caliper and the base surface of the main scale.

[0018] Figure 2 The present invention is a front view of an inspection device used for inspecting the perpendicularity between the inner measuring jaws of a vernier caliper and the base surface of a main scale.

[0019] Figure 3 The present invention is a side view of an inspection device used for inspecting the perpendicularity between the inner measuring jaws of a vernier caliper and the base surface of a main scale. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific examples shown in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0021] Example 1

[0022] like Figure 1-3 As shown, a device for checking the perpendicularity of the inner measuring jaw of a vernier caliper and the base surface of the main scale, the device includes a limit module and a measuring module, the limit modules are respectively provided at both ends of the measuring module, the measuring module includes a right-angle section 1, the limit module includes a first limit plate 2 and a second limit plate 3, the first limit plate 2 and the second limit plate 3 are respectively provided at both ends of the right-angle section 1, the thickness of the first limit plate 2 and the second limit plate 3 is greater than the thickness of the right-angle section 1, the first limit plate 2 and the second limit plate 3 are vertically arranged, the thickness of the first limit plate 2 is less than the thickness of the second limit plate 3, and the horizontal distance between the first limit plate 2 and the second limit plate 3 is greater than the horizontal distance between the measuring surface of the inner measuring jaw and the measuring surface of the outer measuring jaw of the main scale 4 of the vernier caliper.

[0023] The right-angle section 1 is an L-shaped plate as a whole, and the length direction of the first limiting plate 2 is the same as the length direction of one end of the right-angle section 1. When the first limiting plate 2 is installed, one side of the first limiting plate 2 is aligned with one side of the right-angle section 1, and the other side of the first limiting plate 2 extends out of the right-angle section 1; the width of the second limiting plate 3 at the other end of the right-angle section 1 is the same as the width of the other end of the right-angle section 1.

[0024] The difference in thickness between the first limiting plate 2 and the second limiting plate 3 is greater than the thickness of the vernier caliper main scale 4 .

[0025] The flatness of the right end surface of the first limiting plate 2 is not greater than 0.01 mm, and the verticality error of the first limiting plate 2 and the second limiting plate 3 is not greater than 0.005 mm.

[0026] Example 2

[0027] like Figure 1 As shown, a method for checking the perpendicularity between the inner jaws of a vernier caliper and the main scale base surface comprises the following steps:

[0028] S1, disassembling the main scale 4 of the vernier caliper to be inspected from the vernier caliper and cleaning the main scale 4;

[0029] S2: Place the main scale 4 of the vernier caliper into the inspection device so that the plane of the main scale 4 is aligned with the end face of the right-angle segment 1. The measuring surface of the outer measuring jaw of the main scale 4 is connected to the right side face of the first limit plate 2, and the measuring surface of the inner measuring jaw of the main scale 4 is connected to the left side face of the second limit plate 3.

[0030] S3: The lower base surface of the main scale 4 of the vernier caliper is fitted and connected to the upper side surface of the second limit plate 3. The vernier caliper is moved horizontally to the left so that the measuring surface of the inner measuring jaw of the vernier caliper is tightly connected to the right side surface of the first limit plate 2. The surface gap between the inner measuring jaw and the right side surface of the first limit plate 2 is measured with a feeler gauge.

[0031] S4. Correct the verticality of the vernier caliper according to the measured gap data so that the verticality of the vernier caliper meets the requirements. Then reinstall the vernier caliper to complete the verticality test of the vernier caliper.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solutions of the present invention. They should all be included in the scope of the technical solutions for which protection is sought in the present invention.

Claims

1. A device for checking the perpendicularity between the inner jaws of a vernier caliper and the base surface of the main scale, characterized in that: The device includes a limit module and a measuring module, wherein the limit modules are respectively provided at both ends of the measuring module, the measuring module includes a right-angle section, the limit module includes a first limit plate and a second limit plate, and the first limit plate and the second limit plate are respectively provided at both ends of the right-angle section, the thickness of the first limit plate and the second limit plate is greater than the thickness of the right-angle section, the first limit plate and the second limit plate are vertically arranged, the thickness of the first limit plate is less than the thickness of the second limit plate, and the horizontal distance between the first limit plate and the second limit plate is greater than the horizontal distance between the measuring surface of the inner measuring jaw and the measuring surface of the outer measuring jaw of the main scale of the vernier caliper.

2. A device for checking the perpendicularity between the inner jaws of a vernier caliper and the main scale base according to claim 1, characterized in that: The right-angle section is an L-shaped plate as a whole, and the length direction of the first limiting plate is the same as the length direction of one end of the right-angle section. When the first limiting plate is installed, one side of the first limiting plate is aligned with one side of the right-angle section, and the other side of the first limiting plate extends out of the right-angle section; the width of the second limiting plate at the other end of the right-angle section is the same as the width of the other end of the right-angle section.

3. A device for checking the perpendicularity between the inner jaws of a vernier caliper and the main scale base according to claim 2, characterized in that: The difference in thickness between the first limiting plate and the second limiting plate is greater than the thickness of the main scale of the vernier caliper.

4. A device for checking the perpendicularity between the inner jaws of a vernier caliper and the main scale base according to claim 3, characterized in that: The flatness of the right end surface of the first limiting plate is not greater than 0.01 mm, and the verticality error between the first limiting plate and the second limiting plate is not greater than 0.005 mm.

5. A method for checking the perpendicularity between the inner jaws of a vernier caliper and the base surface of the main scale, characterized in that: The method specifically comprises the following steps: S1, disassembling the main scale of the vernier caliper to be inspected from the vernier caliper and cleaning the main scale; S2: Place the main scale of the vernier caliper into the inspection device so that the main scale plane is aligned with the end face of the right-angle segment. The outer measuring jaws of the main scale are connected to the right side of the first limit plate, and the inner measuring jaws of the main scale are connected to the left side of the second limit plate. S3: Fit the lower base surface of the main scale of the vernier caliper to the upper side surface of the second limit plate, and move the vernier caliper horizontally to the left so that the measuring surface of the inner measuring jaw of the vernier caliper is tightly connected to the right side surface of the first limit plate. Use a feeler gauge to measure the surface gap between the inner measuring jaw and the right side surface of the first limit plate. S4. Correct the verticality of the vernier caliper according to the measured gap data so that the verticality of the vernier caliper meets the requirements. Then reinstall the vernier caliper to complete the verticality test of the vernier caliper.

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