Caliper for measuring hole edge distance
By setting mating parts on the main ruler and ruler of the caliper to form clamping jaws and connecting a slender measuring probe, the problem of difficulty in measuring micro holes in traditional calipers is solved, achieving high-precision and high-efficiency hole margin measurement.
Patent Information
- Application Number
- CN202421653558.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-12
AI Technical Summary
Because the claws are too large, it is difficult to measure deep into smaller or narrow holes, resulting in large errors in measurement data, which cannot meet the high accuracy and high efficiency requirements for hole margin measurement in modern mechanical processing.
A caliper for measuring hole margins is designed, by providing a first fitting member on the main ruler of the vernier caliper and a second fitting member on the ruler that is slidingly connected to the main ruler, forming a jaw, relying on the jaw to measure the hole margins, and connecting an elongated measuring probe to the first fitting member, so that the caliper can extend into the tiny hole for measurement.
The caliper can be stably clamped into the hole that needs to be measured, avoiding shaking or too small the hole diameter causes the jaw to be unable to penetrate, improving the accuracy and reliability of the measurement.
Smart Images
Figure CN222964534U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of measuring tools, and particularly relates to a caliper for measuring the edge distance of holes. Background Art
[0002] In the fields of machining and manufacturing, the measurement of the edge distance of holes is a crucial process. The accurate measurement of the edge distance of holes directly affects the fitting and assembly of parts and the quality of the final product. In addition, with the development of modern machining technology, more and more precision machining and the production of micro-parts have put forward higher requirements for the measurement of the edge distance of holes. Due to the limitations of its structure and design, traditional calipers are difficult to meet these high-precision and high-efficiency measurement requirements. For example, in the fields of aerospace, medical devices, and microelectronics, there are strict standards for the accuracy and reliability of the measurement of the edge distance of holes, and traditional calipers are no longer competent because the jaws of traditional calipers are usually large and difficult to penetrate into smaller or narrower holes for measurement. This makes it impossible to obtain accurate data when measuring some micro-holes. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the problem in the background art that due to the too large jaws of traditional calipers, when measuring micro or deep holes during precision machining, it is easy for the jaws to fail to penetrate into the holes, resulting in large errors in measurement data, and to provide a caliper for measuring the edge distance of holes.
[0004] In a first aspect, the utility model provides a caliper for measuring the edge distance of holes. The caliper includes a vernier caliper. The vernier caliper includes a main scale. A scale is slidably connected to the main scale. A first fitting is provided on the main scale, and a second fitting is provided on the scale. The first fitting and the second fitting cooperate to form a jaw. A measuring probe is connected to the first fitting, and the body of the measuring probe is a slender rod.
[0005] The utility model is a caliper for measuring the edge distance of holes. By providing a first fitting on the main scale of the vernier caliper and a second fitting on the scale slidably connected to the main scale, a jaw is formed by the combination of the first fitting and the second fitting, and the edge distance of the hole is measured by relying on the jaw. A measuring probe is connected to the first fitting, and the body of the measuring probe is a slender rod. In this way, the traditional large jaws are changed into a jaw composed of a probe and a second fitting. The slender rod-shaped measuring probe enables the caliper to penetrate the measuring probe into the micro-holes in precision instruments when measuring the edge distance of holes. The main scale is fixed through the cooperation between the hole and the measuring probe, and then the scale is slid to complete the measurement by relying on the cooperation between the measuring probe and the second fitting. Since the measuring probe is a slender rod, the main scale can be stably clamped in the hole to be measured, avoiding the situation of shaking or the jaws being unable to penetrate due to too small a hole diameter, and improving the accuracy of measurement.
[0006] Preferably, a limiting device is sleeved on the first fitting. The limiting device is a hollow frame structure. On one side of the inner wall of the limiting device, there is a receiving groove, and the receiving groove is snap-connected to the measuring probe.
[0007] The detachable connection between the measuring probe and the first fitting can be realized through the limiting device, which is convenient for the operator to replace the corresponding measuring probe according to different hole diameters, so that the caliper can adapt to different occasions.
[0008] Preferably, a first connection hole is provided on the side wall of the limiting device. The opening direction of the first connection hole is perpendicular to the installation direction of the measuring probe. The first connection hole is connected with a first bolt, and one end of the first bolt abuts against the first fitting.
[0009] Through the cooperation of the first connection hole and the first bolt, the connection stability between the measuring probe and the first fitting can be ensured, and the situation that the measuring probe drops during the measurement process, resulting in damage to the measuring probe and large measurement accuracy errors, can be avoided.
[0010] Preferably, one end of the second fitting facing the first fitting is provided with a groove, and the groove cooperates with the limiting device.
[0011] Through the cooperation of the groove and the limiting device, the caliper can be conveniently stored.
[0012] Preferably, a cavity part is provided on the scale. A depth gauge is arranged in the cavity part, and the setting direction of the depth gauge is consistent with the sliding direction of the scale.
[0013] Such a setting can measure the depth through the depth gauge, improving the practicability of the caliper.
[0014] Preferably, the cavity part is connected to the main scale, and the scale realizes sliding connection with the main scale through the cavity part.
[0015] Such a setting can facilitate the operator to slide the scale better.
[0016] Preferably, a limiting baffle is provided at one end of the main scale away from the first fitting, and the limiting baffle is located on the sliding path of the scale.
[0017] Such a setting can prevent the scale from separating from the main scale when the scale slides.
[0018] Preferably, the main scale is provided with a groove. The opening direction of the groove is consistent with the setting direction of the depth gauge. The depth gauge is located in the groove, and a rack is connected in the groove.
[0019] Through the setting of the slot, the depth gauge will not conflict with the positions of other components during setting, while improving the space utilization rate of the caliper.
[0020] Preferably, a scale table is provided on the scale, a pointer is provided inside the scale table, one end of the pointer is connected with a gear mechanism, one end of the gear mechanism is connected with the pointer and the other end meshes with the rack.
[0021] The pointer of the scale table and the rack are connected through a gear mechanism, so that the operator can directly and clearly observe the measured data through the scale table during measurement.
[0022] Preferably, a second connection hole is provided at the top of the scale, a second bolt is connected in the second connection hole, and one end of the second bolt abuts against the main scale.
[0023] The cooperation of the second bolt and the second connection hole can limit the movement of the scale, facilitating reading.
[0024] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0025] 1. The present utility model is a caliper for measuring the edge distance of a hole. By providing a first fitting on the main scale of the vernier caliper and a second fitting on the scale slidably connected to the main scale, a clamping jaw is formed through the combination of the first fitting and the second fitting, and the edge distance of the hole is measured by relying on the clamping jaw. A measuring probe is connected to the first fitting, and the body of the measuring probe is a slender rod. In this way, the traditional large scale jaw is changed into a clamping jaw composed of a probe and a second fitting. The measuring probe made of a slender rod enables the caliper to extend the measuring probe into a tiny hole in a precision instrument when measuring the edge distance of the hole, realizing the fixation of the main scale, and then sliding the scale to complete the measurement by relying on the cooperation of the measuring probe and the second fitting. Since the measuring probe is a slender rod, the main scale can be stably clamped in the hole to be measured, avoiding the situation of shaking or the clamping jaw being unable to extend due to too small a hole diameter, and improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 is a schematic structural diagram of the caliper of the present utility model;
[0027] Figure 2 is an exploded schematic view of the connection relationship between the main scale and the limiting device of the present utility model;
[0028] Figure 3 is a schematic structural diagram of the scale of the present utility model;
[0029] Figure 4 is a schematic structural diagram of the limiting device of the present utility model.
[0030] Markings in the figure: 1 - main scale; 11 - first mating part; 12 - limit baffle; 13 - groove; 131 - rack; 2 - scale; 21 - second mating part; 211 - groove; 22 - cavity part; 221 - depth gauge; 23 - scale table; 231 - pointer; 24 - second connection hole; 241 - second bolt; 3 - clamping jaw; 4 - measuring probe; 5 - limiting device; 51 - receiving groove; 52 - first connection hole; 6 - first bolt. Detailed implementation mode
[0031] The following further describes the present utility model in detail in conjunction with specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present utility model to the following embodiments. All technologies implemented based on the content of the present utility model belong to the scope of the present utility model.
[0032] In the description of the specific embodiments of the present utility model, without special explanation, the expression terms of orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the utility model product / device / device is normally used and placed. These terms of orientation or positional relationship are only for the convenience of describing the present utility model solution or simplifying the description in the specific embodiments, so as to facilitate technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, it cannot be understood as a limitation to the present utility model.
[0033] In addition, if terms such as "horizontal", "vertical", "hanging", "parallel", etc. appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present utility model.
[0034] In addition, the expressions such as "first", "second", "third", etc. in the terms are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.
[0035] In addition, in the description of the embodiments of the present utility model, "several", "multiple", and "a plurality of" represent at least two. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and can even be a situation where it exceeds 9.
[0036] In addition, in the description of the technical solutions of the present utility model, unless otherwise clearly specified / defined / restricted, when terms such as "set", "installed", "connected", "linked", "provided with", "laid", "arranged" appear, they 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 connection means commonly used in the art such as welding, riveting, bolting, threaded connection, etc. Such a connection can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components.
[0037] Embodiment 1
[0038] As Figure 1 shown, a caliper for measuring the hole edge distance includes a vernier caliper, and the vernier caliper is composed of a main scale 1 and a scale 2. The scale 2 is slidably connected to the main scale 1. A first fitting 11 is provided on the main scale 1, and a second fitting 21 that cooperates with the first fitting 11 is provided on the scale 2. The first fitting 11 and the second fitting 21 form a jaw 3 through the movement between the main scale 1 and the scale 2. The hole edge distance is measured through the jaw 3. A measuring probe 4 is provided on the first fitting 11. The body of the measuring probe 4 is a slender rod. Through the slender rod, when the caliper measures the hole edge distance, it can extend into a smaller hole, and is limited by the cooperation between the slender rod and the hole. Then, by moving the second fitting 21, the hole edge distance is measured, ensuring the accuracy of the measurement.
[0039] The size range of the micro-holes in this application is 0.5 mm to 5 mm.
[0040] In one or several embodiments, a limiting device 5 is sleeved on the first fitting 11, and the limiting device 5 is a hollow frame structure. A receiving groove 51 is provided on one side of the inner wall (i.e., the hollow part) of the limiting device 5. The receiving groove 51 is used to install the measuring probe 4. By sleeving the limiting device 5 on the first fitting 11, at this time, one side of the measuring probe 4 installed in the receiving groove 51 abuts against the first fitting 11, thereby realizing the limitation of the measuring probe 4.
[0041] Further, a first connection hole 52 is also provided on the limiting device 5. A first bolt 6 is threadedly connected in the first connection hole 52, and the opening direction of the first connection hole 52 is perpendicular to the opening direction of the receiving groove 51 (i.e., the direction of the measuring probe 4). By rotating the first bolt 6, one end of the first bolt 6 abuts against the first fitting 11 to fix the measuring probe 4 and enhance the connection stability between the measuring probe 4 and the limiting device 5, as Figure 1 and Figure 2 and Figure 4 shown.
[0042] In one or several embodiments, a groove 211 is provided at one end of the second fitting 21 facing the first fitting 11. The groove 211 cooperates with the limiting device 5. By bringing the second fitting 21 closer to and limitingly fixing it to the first fitting 11, the overall size of the caliper becomes smaller, making it more convenient to carry and store, as Figure 3 shown.
[0043] In one or several embodiments, a cavity portion 22 is provided on the scale 2. A depth gauge 221 is provided in the cavity portion 22. The setting direction of the depth gauge 221 is the same as the sliding direction of the scale 2. By providing the depth gauge 221 on the scale 2, the caliper can not only measure the hole edge distance but also measure the depth of the hole. The depth gauge 221 is provided in the cavity portion 22 of the scale 2 and is in the same sliding direction as the scale 2, ensuring the parallelism and perpendicularity of the depth gauge 221 and the measurement object during the measurement process, thereby improving the measurement accuracy and precision, as Figure 1 and Figure 3 shown.
[0044] In one or several embodiments, the cavity portion 22 is connected to the main scale 1, and the scale 2 is slidably connected to the main scale 1 through the cavity portion 22. The cavity portion 22 provides a stable sliding path, making the scale 2 slide more smoothly and precisely during the sliding process. It avoids measurement errors caused by uneven sliding or insecure connection, thereby improving the measurement accuracy and reliability, as Figure 1 shown.
[0045] In one or several embodiments, a limiting baffle 12 is provided at one end of the main scale 1 away from the first fitting 11. The limiting baffle 12 is located on the sliding path of the scale 2. Such a setting can prevent the scale 2 from separating from the main scale 1 when the scale 2 slides, as Figure 2 shown.
[0046] In one or more embodiments, the main scale 1 is provided with a groove 13, the opening direction of the groove 13 is the same as the setting direction of the depth scale 221, the depth scale 221 is located in the groove 13, and a rack 131 is connected in the groove 13. Through the setting of the groove 13, the depth scale 221 will not conflict with the positions of other components during setting, and at the same time, the space utilization rate of the caliper is improved. As Figure 1 shown in Figure 2 Figure
[0047] In one or more embodiments, the scale 2 is provided with a scale table 23, a pointer 231 is arranged in the scale table 23, one end of the pointer 231 is connected with a gear mechanism, one end of the gear mechanism is connected with the pointer 231 and the other end is meshed with the rack 131. The user only needs to slide the scale 2, and the gear mechanism automatically drives the pointer 231 to move through the meshing of the rack 131, and the pointer 231 displays the corresponding measured value on the scale table 23. This design reduces the error of manual reading and makes the operation more simple and intuitive. As Figure 3 shown in
[0048] In one or more embodiments, a second connection hole 24 is arranged at the top of the scale 2, a second bolt 241 is connected in the second connection hole 24, and one end of the second bolt 241 abuts against the main scale 1. By rotating the second bolt 241, the scale 2 can be fixed at a specific position of the main scale 1. After the bolt abuts against the main scale 1, it can effectively prevent the scale 2 from sliding or displacing during the measurement process, thereby ensuring the accuracy and stability of the measurement data. The design of the second bolt 241 enables the user to conveniently adjust the position. Just rotate the bolt to loosen or lock the position of the scale 2. The operation is simple and fast, and it is mostly used in application scenarios that require frequent adjustment and fixation of the measurement position to improve the measurement efficiency. As Figure 1 shown in Figure 3 Figure
[0049] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A caliper for measuring hole margin, the caliper comprising a vernier caliper, characterized in that: The vernier caliper comprises a main scale (1), a scale (2) being slidably connected to the main scale (1), a first matching piece (11) being provided on the main scale (1), a second matching piece (21) being provided on the scale (2), the first matching piece (11) and the second matching piece (21) matching to form a clamp (3), a measuring probe (4) being connected to the first matching piece (11), the measuring probe (4) being a slender rod, a limiting device (5) being sleeved on the first matching piece (11), the limiting device (5) being a hollow frame structure, a receiving groove (51) being provided on one side of an inner wall of the limiting device (5), the receiving groove (51) being clamped to the measuring probe (4).
2. A caliper for measuring hole margin according to claim 1, characterized in that: A first connection hole (52) is provided on a side wall of the limiting device (5); the opening direction of the first connection hole (52) is perpendicular to the installation direction of the measuring probe (4); the first connection hole (52) is connected to a first bolt (6); one end of the first bolt (6) is in contact with the first matching piece (11).
3. A caliper for measuring hole margin according to claim 2, characterized in that: One end of the second matching piece (21) facing the first matching piece (11) is provided with a groove (211), and the groove (211) matches with the limiting device (5).
4. A caliper for measuring hole margin distance according to any one of claims 1 to 3, characterized in that: The ruler (2) is provided with a cavity portion (22), and a depth gauge (221) is provided in the cavity portion (22), and the setting direction of the depth gauge (221) is consistent with the sliding direction of the ruler (2).
5. A caliper for measuring hole margins according to claim 4, characterized in that: The cavity portion (22) is connected to the main scale (1), and the scale (2) is slidably connected to the main scale (1) via the cavity portion (22).
6. A caliper for measuring hole margins according to claim 5, characterized in that: A limit baffle (12) is provided at one end of the main ruler (1) away from the first matching piece (11), and the limit baffle (12) is located on the sliding path of the ruler (2).
7. A caliper for measuring hole margin distance according to claim 6, characterized in that: The main ruler (1) is provided with a groove (13), the opening direction of the groove (13) is consistent with the setting direction of the depth ruler (221), the depth ruler (221) is located in the groove (13), and the groove (13) is connected with a rack (131).
8. A caliper for measuring hole margin distance according to claim 7, characterized in that: The ruler (2) is provided with a scale (23), the scale (23) having a pointer (231) therein, one end of the pointer (231) being connected to a gear mechanism, one end of the gear mechanism being connected to the pointer (231) and the other end being meshed with the rack (131).
9. A caliper for measuring hole margin distance according to any one of claims 5 to 8, characterized in that: A second connection hole (24) is provided at the top of the scale (2), a second bolt (241) is connected inside the second connection hole (24), and one end of the second bolt (241) is in contact with the main scale (1).