Ceramic measuring claw structure and caliper

Abstract

A ceramic measuring jaw structure and caliper, belonging to the field of length measuring devices, is disclosed to address the problem of varying wear levels of the jaws in existing calipers affecting measurement accuracy and reducing caliper lifespan. It features a measuring surface for contacting the object being measured. The ceramic measuring jaw structure comprises a jaw body and jaw tips disposed on the jaw body, with a recessed cavity on the jaw body for mating and fixing with the caliper. The advantages of this invention lie in its multi-segment disposable design, which allows the caliper to maintain high precision during measurement. Furthermore, the tips of the jaw tips can be broken off for adjustment based on usage. When the ceramic measuring jaw structure is completely worn, it can be directly broken and returned to the factory for repair, after which it can be reused, significantly extending the caliper's lifespan.

Description

Technical Field

[0001] This invention belongs to the field of length measuring devices, specifically relating to a ceramic measuring claw structure and calipers. Background Technology

[0002] In the era of mass production in industry, measuring tools are needed to control the dimensions of manufactured parts to achieve interchangeability and versatility. Due to the diversity of products on the market, ordinary measuring tools face significant challenges. They must handle workpieces of different shapes, measurements of different dimensions, and different user habits. Consequently, the measuring jaws of measuring tools often exhibit varying degrees of wear. For example, with calipers, the large jaw for measuring outer diameters is normally more durable than the small jaw for measuring inner diameters. This means that many users may still have acceptable accuracy with the large jaw, but the small jaw's accuracy may have exceeded tolerances. To continue measuring inner diameters, users must purchase a new caliper, discarding the old caliper that can still be used with the large jaw. This results in a waste of product functionality and resources.

[0003] Different measurement scenarios require the design of the measuring surface based on their structural characteristics to ensure accurate measurements. Take caliper jaws, for example. To accurately measure different hole diameters (due to the curved inner wall of the hole), the width of the measuring surface of the jaws needs strict control to guarantee accuracy. This is why the measuring surface of the larger jaw is larger than that of the smaller jaw. Because of this smaller measuring surface area, when both jaws are used at the same frequency, the smaller jaw experiences significantly more wear due to its smaller area. If the smaller jaw encounters a workpiece with high hardness, its lifespan will be reduced even more drastically. Since calipers are measuring tools, the impact of wear on the measuring surface on product accuracy is a fatal flaw for measuring tools.

[0004] To address the aforementioned issues, the industry has seen the development of calipers with wear-resistant cemented carbide or ceramic inlays on the measuring surfaces, and some calipers are even made entirely of ceramic. These structures sometimes require advanced manufacturing processes and are expensive to produce. While they enhance the durability of the measuring surfaces, once worn, they are generally irreparable or require significant repair costs. Therefore, they do not fundamentally solve the problem of functional waste caused by asynchronous wear. Summary of the Invention

[0005] To address the above problems, this invention provides a ceramic measuring jaw structure and a caliper.

[0006] The present invention adopts the following technical solution:

[0007] A ceramic measuring jaw structure has a measuring surface for contacting the object to be measured. The ceramic measuring jaw structure includes a jaw body and a jaw head disposed on the jaw body. The jaw body is provided with a cavity for cooperating and connecting with a caliper.

[0008] Optionally, the claw head converges in a stepped manner.

[0009] Optionally, a first stress notch is provided on the claw head.

[0010] Optionally, a first stress notch is provided at the junction of the stepped changes on the claw head.

[0011] Optionally, the ceramic measuring claw structure has a reference surface, on which a second stress notch is provided corresponding to the position of the first stress notch.

[0012] A caliper includes: a caliper body and a caliper frame that cooperates with the caliper body. The caliper body and the caliper frame are provided with mounting posts. A ceramic measuring jaw structure is fixedly provided on the mounting posts. The ceramic measuring jaw structure includes a jaw body and a jaw head provided on the jaw body. The jaw body is provided with a cavity that cooperates and is fixedly connected to the mounting posts. The shape of the mounting posts is adapted to the cavity on the jaw body of the ceramic measuring jaw structure.

[0013] Optionally, the claw head converges in a stepped manner.

[0014] Optionally, a first stress notch is provided on the claw head.

[0015] Optionally, a first stress notch is provided at the junction of the stepped changes on the claw head.

[0016] Optionally, the ceramic measuring claw structure has a reference surface, on which a second stress notch is provided corresponding to the position of the first stress notch.

[0017] The beneficial effects of this invention are that the ceramic measuring jaw structure is designed as a multi-segment disposable structure, which allows the caliper to maintain a high precision state during measurement. Moreover, the tip of the jaw can be broken off for adjustment according to the usage. When the ceramic measuring jaw structure is completely worn, it can be directly smashed and sent back to the factory for repair. After repair, it can be reused, which greatly extends the service life of the caliper. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the ceramic measuring claw of the present invention in one embodiment;

[0019] Figure 2 This is a schematic diagram of the structure of the ceramic measuring claw structure of the present invention in Embodiment 2;

[0020] Figure 3This is a schematic diagram of the ceramic measuring claw structure of the present invention from a first-view perspective, representing a third embodiment.

[0021] Figure 4 This is a schematic diagram of the ceramic measuring claw structure of the present invention from a second perspective, representing a third embodiment.

[0022] Figure 5 This is a schematic diagram of the ceramic measuring claw structure of the present invention from a third-view perspective, representing a third embodiment of the invention.

[0023] Figure 6 This is a schematic diagram of the first stress notch and the second stress notch structure of the ceramic measuring claw structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the disassembled structure of the caliper of the present invention;

[0025] Figure 8 This is a schematic diagram of the caliper structure of the present invention;

[0026] Figure 9 This is a schematic diagram of the selective breaking off of the claw head in the ceramic measuring claw structure of the caliper of the present invention.

[0027] Figure 10 This is a schematic diagram of the ceramic measuring jaw structure on the caliper of the present invention for step measurement. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] Example 1:

[0030] like Figure 1 As shown, a ceramic measuring jaw structure 100 has a measuring surface 101 for contacting the object to be measured. The ceramic measuring jaw structure 100 includes a jaw body 1 and a jaw head 2 disposed on the jaw body 1. The jaw body 1 is provided with a cavity 11 for mating and fixing with a caliper. In use, the ceramic measuring jaw structure 100 is installed on a compatible caliper for measuring the object to be measured.

[0031] Ceramics are a material with high hardness, good wear resistance, brittleness, and heat resistance. With the continuous advancement of molding technology in the market, chemical molding processes have emerged that can form ceramic preforms on low-cost molds. After sintering, high-density, high-precision workpieces are obtained. The resulting ceramic workpieces are low-cost, highly malleable, have good machinability, and strong material structure, thus expanding the application range of ceramic materials. In the ceramic measuring jaw structure 100 of this invention, during use, the worn portion of the top of the jaw head 2 can be broken off according to the wear condition, thereby exposing the unworn portion below, allowing the measuring jaw to continue accurate measurement. It also allows the jaw tip to be broken off multiple times, thus increasing its service life several times over, and allowing it to be reused after being returned to the factory for repair. When the entire jaw head 2 is worn, the ceramic measuring jaw structure 100 is completely broken and returned to the factory for replacement with a new one.

[0032] Example 2:

[0033] like Figure 2 As shown, this embodiment is basically the same as the above embodiment, except that the claw head 2 is provided with a first stress notch 21. The first stress notch 21 can break along the first stress notch 21 when the claw head 2 is broken, forming a new end with a more regular shape and in line with expectations, avoiding irregular breakage and affecting subsequent use.

[0034] Example 3:

[0035] like Figure 3 , 4 As shown in Figure 5, this embodiment is basically the same as the above embodiment, except that the claw head 2 is stepped and gradually tapers from bottom to top. The stepped shape of the claw head 2 can concentrate stress, make it easy to break, and prevent misalignment at both ends. At the same time, the thickness is thinner and the volume is smaller as it gets closer to the top, which is very convenient for measuring small spaces with narrow widths.

[0036] Example 4:

[0037] like Figure 3 , 6 As shown, Figure 6 As shown Figure 5 The enlarged view at point A shows that this embodiment is basically the same as the above embodiment, except that a first stress notch 21 is provided at the junction of the stepped change on the claw head 2. The first stress notch 21 can break along the first stress notch 21 when the claw head 2 is broken, forming a new end with a more regular shape and in line with expectations, avoiding irregular breakage and affecting subsequent use.

[0038] Example 5:

[0039] like Figure 4 ,6 As shown, this embodiment is basically the same as the above embodiment, except that the ceramic measuring claw structure 100 has a reference surface 102, and a second stress notch 22 corresponding to the position of the first stress notch 21 is provided on the reference surface 102. Under normal circumstances, the measuring surface 101 is perpendicular to the reference surface 102. The second stress notch 22 can cooperate with the first stress notch 21, so that when the claw head 2 is broken off, it breaks along the plane where the first stress notch 21 and the second stress notch 22 are located, forming a new end with a more regular and neat shape that meets expectations, avoiding irregular fractures that would affect subsequent use.

[0040] Example 6:

[0041] like Figure 5 , 6 As shown, this embodiment is basically the same as the above embodiment, except that the stepped shape on the claw 2 is inclined, so that after breaking, it forms a top surface inclined shape, which makes it convenient to insert into the object to be measured for measurement.

[0042] Example 7:

[0043] like Figure 7 , 8 As shown, a caliper 200 includes: a caliper body 201 and a caliper frame 202 that cooperates with the caliper body 201. The caliper body 201 and the caliper frame 202 are provided with mounting posts 3. A ceramic measuring jaw structure 100 is fixedly provided on the mounting posts 3. The ceramic measuring jaw structure 100 includes a jaw body 1 and a jaw head 2 provided on the jaw body 1. The jaw body 1 is provided with a cavity 11 that cooperates and is fixedly connected to the mounting posts 3. The shape of the mounting posts 3 is adapted to the cavity 11 on the jaw body 1 of the ceramic measuring jaw structure 100, so that the mounting posts 3 and the ceramic measuring jaw structure 100 can be accurately connected. Then, the two are fixed together by means of inlaying, bonding or welding.

[0044] During assembly, adhesive or welding agent can be placed in the cavity 11 of the ceramic measuring jaw structure 100, then it can be fitted onto the mounting post 3 and secured by the clamp. During maintenance, the worn ceramic jaws can be broken and removed. Because ceramics are wear-resistant yet fragile, this will not damage the original caliper 200 body during repair. The connecting structure should be cleaned, and a new ceramic measuring jaw structure 100 can be assembled using the same fixing process. When assembling the ceramic measuring jaw structure 100 onto the caliper 200, the reference surface 102 must be kept parallel while maintaining as small a gap as possible.

[0045] In some alternative embodiments, the claw head 2 has a stepped, tapering shape, with the ends gradually narrowing from bottom to top. The stepped shape of the claw head 2 can concentrate stress, facilitate breakage, and prevent misalignment at both ends. At the same time, the thickness decreases and the volume decreases as it approaches the top, which is very convenient for measuring small spaces with narrow widths.

[0046] In some alternative embodiments, the claw head 2 is provided with a first stress notch 21. The first stress notch 21 can be provided so that when the claw head 2 is broken off, it breaks along the first stress notch 21, forming a new end with a more regular shape and in line with expectations, avoiding irregular breakage and affecting subsequent use.

[0047] In some optional embodiments, a first stress notch 21 is provided at the junction of the stepped change on the claw head 2. The first stress notch 21 can be provided so that the claw head 2 breaks along the first stress notch 21 when it is broken, forming a new end with a more regular shape and in line with expectations, avoiding irregular breakage and affecting subsequent use.

[0048] In some optional embodiments, the ceramic measuring claw structure 100 has a reference surface 102, on which a second stress notch 22 is provided corresponding to the position of the first stress notch 21. Generally, the measuring surface 101 is perpendicular to the reference surface 102. The second stress notch 22 works in conjunction with the first stress notch 21, causing the claw head 2 to break along the plane containing both the first and second stress notches 21 when broken off, forming a new end with a more regular and neat shape that meets expectations, thus avoiding irregular breakage that would affect subsequent use.

[0049] In some alternative embodiments, the stepped shape on the claw 2 is inclined, so that after breaking, it forms a top surface that is inclined, which facilitates insertion into the object to be measured.

[0050] like Figure 9 , 10 As shown, in environments where small jaws are used for measurement, step measurement is also frequently encountered. To achieve this measurement, users typically need to custom-make calipers with jaw tips of different heights, which is costly and time-consuming. The ceramic measuring jaw structure 100 of this invention allows users to easily operate it themselves, transforming ordinary calipers into calipers capable of step measurement. By breaking off a portion of the jaw tip 2 to adapt to the stepped shape of the object being measured, different forms of step measurement can be achieved according to usage needs.

[0051] Because the measuring surface area of ​​calipers is small, the small jaws are usually the first to wear out, resulting in poor accuracy. This invention addresses this by dividing the easily worn area into a segmented, disposable structure. The disassembled structural areas are fitted with higher quality and more suitable (ceramic) materials according to the characteristics and requirements of different structures. If accidental damage or asynchronous wear of the measuring surfaces occurs, the calipers can be returned to the factory for repair and replacement. Since calipers are measuring tools, wear has a fatal impact on the accuracy of the product, and repairs must be performed by professionals.

[0052] Due to the unique nature of measuring tools, wear on the measuring surfaces severely affects product quality. In addition, different measuring tools have unique structural features and vulnerable areas. This invention designs a sleeve structure in the vulnerable structural areas, which not only strengthens the structure locally but also provides a simple, fast, and low-cost solution for subsequent repairs of the local structure.

[0053] The beneficial effects of this invention are that the ceramic measuring jaw structure is designed as a multi-segment disposable structure, which allows the caliper to maintain a high precision state during measurement. Moreover, the tip of the jaw can be broken off for adjustment according to the usage. When the ceramic measuring jaw structure is completely worn, it can be directly smashed and sent back to the factory for repair. After repair, it can be reused, which greatly extends the service life of the caliper.

Claims

1. A ceramic measuring jaw structure (100) having a measuring face (101) for contacting an object to be measured, characterized in that The ceramic measuring claw structure (100) comprises a claw body (1) and a claw head (2) arranged on the claw body (1), and the claw body (1) is provided with a concave cavity (11) fixedly connected with a caliper. The claw head (2) is provided with a first stress notch (21); or the claw head (2) is provided with a first stress notch (21) at a stepped change boundary. The ceramic measuring claw structure (100) has a reference surface (102), and the reference surface (102) is provided with a second stress notch (22) corresponding to the position of the first stress notch (21).

2. The ceramic gage finger structure of claim 1, wherein, The claw head (2) is tapered in a stepped manner.

3. A caliper (200) comprising: The ruler body (201) and the ruler frame (202) matched with the ruler body (201) are characterized in that the ruler body (201) and the ruler frame (202) are provided with mounting columns (3), the mounting columns (3) are fixedly provided with ceramic measuring claw structures (100), the ceramic measuring claw structures (100) comprise claw bodies (1) and claw heads (2) arranged on the claw bodies (1), the claw bodies (1) are provided with concave cavities (11) fixedly connected with the mounting columns (3), and the shapes of the mounting columns (3) are matched with the concave cavities (11) on the claw bodies (1) of the ceramic measuring claw structures (100).

4. The caliper of claim 3, wherein, The claw head (2) is tapered in a stepped manner.

5. The caliper of claim 3, wherein, The claw head (2) is provided with a first stress notch (21).

6. The caliper of claim 4, wherein, The claw head (2) is provided with a first stress notch (21) at a stepped change boundary.

7. The caliper according to claim 5 or 6, characterized in that The ceramic measuring claw structure (100) has a reference surface (102), and the reference surface (102) is provided with a second stress notch (22) corresponding to the position of the first stress notch (21). The ceramic measuring claw structure (100) has a reference surface (102), and the reference surface (102) is provided with a second stress notch (22) corresponding to the position of the first stress notch (21).

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