Inner diameter measuring device for pivot deep hole
By designing an inner diameter measuring device including an articulated structure and an arc-shaped scale, the problem that the full length of the pivot deep hole cannot be accurately measured is solved, and an efficient and accurate measurement process is achieved, which is suitable for the inner diameter measurement of the pivot deep hole.
Patent Information
- Application Number
- CN202422744374.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-11
AI Technical Summary
In the prior art, the inner diameter measuring device of the pivot deep hole cannot achieve full-length accurate measurement, and the measurement process is inconvenient. It is necessary to carry an inner diameter micrometer into the inner hole of the workpiece, which affects the measurement efficiency and accuracy.
An inner diameter measuring device including a first support arm and a second support arm is designed. An arc-shaped ruler and a dial indicator are used. The measuring arm is adjusted through a hinge structure and an adjustment handle. It can perform precise measurement on the outside of the workpiece and simplify the operation process.
It realizes efficient and accurate measurement of pivot deep holes, simplifies the operation process, improves measurement efficiency and product quality, and is suitable for both professional and non-professional use.
Smart Images
Figure CN223425892U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of workpiece measurement, and particularly relates to an inner diameter measuring device for a pivot deep hole. Background Art
[0002] The structure of a large mining excavator includes a power unit, a working device, a slewing mechanism, an operating mechanism, a transmission mechanism, a traveling mechanism and auxiliary facilities. Among them, the pivot is an important component. During the production process of a workpiece such as a pivot that contains a deep hole, it is often necessary to precisely measure the size of the deep hole.
[0003] The measurement of the inner diameter of this pivot deep hole generally uses an inside diameter dial indicator or an inside diameter micrometer. For deep holes with larger apertures, in order to ensure the accuracy of measurement, the internal transmission rod of the inside diameter dial indicator handle cannot be made too long, so the inside diameter size of the deep hole workpiece along the entire length cannot be measured. For deep holes with larger apertures, an inside diameter micrometer can be used to measure the entire length size, but the measurement personnel need to carry the inside diameter micrometer into the inner hole of the workpiece for measurement, which is inconvenient. During the workpiece processing process, it may be necessary to remove the workpiece from the machine tool and other equipment before measurement, which is extremely inconvenient. In summary, there is an urgent need for an inside diameter measuring device for pivot deep holes. Utility Model Content
[0004] In order to solve some or all of the technical problems existing in the above-mentioned prior art, the utility model provides an inner diameter measuring device for a pivot deep hole, the inner diameter measuring device comprising a first support arm and a second support arm hinged to the middle portion of the first support arm via a hinge shaft, wherein:
[0005] Part of the first support arm is the first measuring arm, and the other part is the first adjusting arm. Part of the second support arm is the second measuring arm, and the other part is the second adjusting arm. The free end of the first measuring arm is fixed with a positioning block by a fastener, and a probe is provided on the outside of the positioning block. The free end of the second measuring arm is fixed with a positioning bridge by the fastener, an instrument is provided on the inside of the positioning bridge, and a guide nut is provided on the outside. A zero position scale needle is provided in the middle of the first adjusting arm, and a first handle is provided at the free end. A ruler is fixed with a ruler in the middle of the second adjusting arm by the fastener, and a second handle is provided at the free end. The free end of the ruler passes through the zero position scale needle. The first adjusting arm and the second adjusting arm are connected with an adjusting nut by a bidirectional screw. An adjusting handle is provided in the middle of the bidirectional screw. A fastening nut is provided on the outer periphery of the screw, and the fastening nut is located on the outside of the first adjusting arm.
[0006] Furthermore, in the above-mentioned inner diameter measuring device for the pivot deep hole, the scale is an arc-shaped scale.
[0007] As a specific implementation, in the above-mentioned inner diameter measuring device for the pivot deep hole, the first support arm and the second support arm are both square hollow tubes.
[0008] As a specific embodiment, in the above-mentioned inner diameter measuring device for the pivot deep hole, the first measuring arm and the first adjusting arm, as well as the second measuring arm and the second adjusting arm are connected in an integrated manner.
[0009] As a specific embodiment, in the above-mentioned inner diameter measuring device for the pivot deep hole, the fastener is a fastening screw.
[0010] The inner diameter measuring device for a pivot deep hole of the utility model has the following advantages and beneficial effects:
[0011] (1) The device is easy to assemble and disassemble, and adopts a reasonable design structure. It does not require carrying an internal micrometer to enter the inner hole of the workpiece to measure the workpiece. It can solve the detection problem of pivot deep hole measurement, and the measurement value is accurate. Its structure is simple and easy to operate and use. It can ensure the consistency of processing dimensions, reduce the time of repeated calibration and adjustment, achieve efficient measurement, and improve the efficiency of deep hole processing and product quality;
[0012] (2) The design of this device takes into account the convenience of use, making the measurement process simpler and easier. Whether for professional measurement personnel or non-professionals, this device can provide a convenient and fast measurement experience. In terms of improving processing efficiency, ensuring product quality, and solving technical problems that are difficult to overcome with traditional measuring tools, the innovations of these technical solutions not only improve the efficiency and product quality of deep hole processing, but also solve the technical problems that are difficult to overcome in traditional processing methods, bringing significant progress to the field of deep hole processing. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only used to further understand the embodiments of the present invention and constitute part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:
[0014] Figure 1 It is a structural schematic diagram of the inner diameter measuring device for a pivot deep hole of the present invention.
[0015] Description of reference numerals:
[0016] 1-Second adjusting arm, 2-First measuring arm, 3-Second measuring arm, 4-First adjusting arm, 5-Bidirectional screw, 6-Adjusting handle, 7-Ruler, 8-Hinged shaft, 9-Positioning block, 10-Probe, 11-Instrument, 12-Locking nut, 13-Positioning guard bridge, 14-Fasteners, 15-Guide nut, 16-First handle, 17-Second handle, 18-Zero position scale needle, 19-Adjusting nut. DETAILED DESCRIPTION
[0017] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.
[0018] like Figure 1As shown, the utility model discloses an inner diameter measuring device for a pivot deep hole, comprising a first support arm, a second support arm hinged to the middle of the first support arm through a hinge shaft 8, wherein a portion of the first support arm is a first measuring arm 2, and another portion is a first adjusting arm 4, a portion of the second support arm is a second measuring arm 3, and another portion is a second adjusting arm 1, the maximum distance between the first measuring arm 2 and the second measuring arm 3 matches the aperture of the pivot deep hole to be measured, the free end of the first measuring arm 2 is fixed with a positioning block 9 by a fastener 14, a probe 10 is provided on the outside of the positioning block 9, and the free end of the second measuring arm 3 is fixed with a positioning block 9 by a fastener 14, a probe 10 is provided on the outside of the positioning block 9, and a probe 10 is provided on the outside of the positioning block 9. A positioning guard bridge 13 is fixed by a fastener 14, and an instrument 11 is provided on the inner side of the positioning guard bridge 13. More specifically, the instrument 11 is a dial indicator, and each small scale on the dial indicator is 0.01mm. The needle of the dial indicator passes through the outer side of the positioning guard bridge 13. When the needle is subjected to axial pressure, the pointer on the dial indicator will point to a larger number as the pressure increases. On the contrary, when the pressure decreases, the pointer will point to a smaller number as the pressure decreases until it points to 0. A guide nut 15 is provided on the outer side of the positioning guard bridge 13, a zero position scale needle 18 is provided in the middle of the first adjustment arm 4, and a first handle is provided at the free end. 16. A scale 7 is fixed to the middle of the second adjustment arm 1 by a fastener 14, and a second handle 17 is provided at the free end. The free end of the scale 7 passes through the zero-position scale needle 18. When the angle between the first adjustment arm 4 and the second adjustment arm 1 increases, the number pointed to by the zero-position scale needle 18 on the scale 7 gradually increases. When the angle between the first adjustment arm 4 and the second adjustment arm 1 decreases, the number pointed to by the zero-position scale needle 18 on the scale 7 gradually decreases. The first adjustment arm 4 and the second adjustment arm 1 are connected by a bidirectional screw 5 and an adjusting nut 19. An adjusting handle 6 is provided in the middle of the bidirectional screw 5. By rotating the adjustment The adjustment handle 6 can control the opening and closing of the first adjustment arm 4 and the second adjustment arm 1. When the adjustment handle 6 is rotated forward, the first adjustment arm 4 and the second adjustment arm 1 approach each other. When the adjustment handle 6 is rotated backward, the first adjustment arm 4 and the second adjustment arm 1 move away from each other. A fastening nut is provided on the outer thread of the bidirectional screw 5, and the fastening nut is located on the outside of the first adjustment arm 4. This device is suitable for adjusting the inner hole diameter of the pivot with a size of 400mm to 1200mm. The minimum unit of measuring the inner hole can be accurate to 0.01mm, and the length of the support arm is used to measure the inner hole with a depth of 30mm to 1500mm.
[0019] Furthermore, in the inner diameter measuring device for the pivot deep hole of the present invention, the scale 7 is an arc-shaped scale 7. More specifically, the upper scale of the scale 7 has a 1 mm per grid, and the lower scale of the scale 7 has a 0.5 mm per grid.
[0020] As a specific embodiment, in the inner diameter measuring device for the pivot deep hole of the utility model, the first support arm and the second support arm are both square hollow tubes, and are galvanized as a whole. They have the characteristics of light weight, small thermal expansion coefficient and high strength. This not only makes the overall weight of the device lighter and convenient for single-person operation, but also the excellent physical properties ensure that the dimensional accuracy of the workpiece can be measured under normal conditions.
[0021] As a specific embodiment, in the inner diameter measuring device for the pivot deep hole of the present invention, the first measuring arm 2 and the first adjusting arm 4, and the second measuring arm 3 and the second adjusting arm 1 are both connected in an integrated manner.
[0022] As a specific implementation, in the inner diameter measuring device for a pivot deep hole of the present invention, the fastener 14 is a fastening screw.
[0023] The working principle of the inner diameter measuring device for pivot deep hole of the utility model is:
[0024] During measurement, the first measuring arm 2 and the second measuring arm 3 are extended into the deep hole to be measured. First, the probe 10 is pressed against the inner wall of the deep hole. Then, the adjustment handle 6 is turned to control the opening and closing of the first adjustment arm 4 and the second adjustment arm 1, thereby controlling the opening and closing of the first measuring arm 2 and the second measuring arm 3, so that the stylus of the instrument 11 is pressed against the inner wall of the deep hole. Then, the instrument 11 and the guide nut 15 are swung up and down within 10°, respectively, and the minimum value is taken as the actual measured value of the aperture. The locking nut 12 is adjusted to press against the outer wall of the first measuring arm 2, and the relative position between the first measuring arm 2 and the second measuring arm 3 is fixed.
[0025] Then start reading. First, take the position indicated by the zero-position scale needle 18 on the ruler 7 as the reference. When the zero-position scale needle 18 is aligned with the scale of the ruler 7, it is the size of the actual measured hole. Then observe the value on the instrument 11. Add the value on the ruler 7 to the value on the instrument 11 to get the final measurement result. As the device is used, the zero position of the instrument 11 can be adjusted with a standard sample circle or a higher-precision outside micrometer to achieve precise measurement accuracy.
[0026] In summary, compared with the prior art, the inner diameter measuring device for a pivot deep hole of the present invention has the following advantages and beneficial effects:
[0027] (1) The device is easy to assemble and disassemble, and adopts a reasonable design structure. It does not require carrying an internal micrometer to enter the inner hole of the workpiece to measure the workpiece. It can solve the detection problem of pivot deep hole measurement, and the measurement value is accurate. Its structure is simple and easy to operate and use. It can ensure the consistency of processing dimensions, reduce the time of repeated calibration and adjustment, achieve efficient measurement, and improve the efficiency of deep hole processing and product quality;
[0028] (2) The device takes into account the convenience of use, making the measurement process simpler and easier, whether for professional measurement personnel or non-professional personnel, the device can provide a convenient and fast measurement experience, in improving processing efficiency, ensuring product quality, solving the technical problems that traditional measuring tools cannot overcome, etc. The innovation of these technical solutions not only improves the efficiency and product quality of deep hole machining, but also solves the technical problems that are difficult to overcome in traditional machining methods, bringing significant progress to the field of deep hole machining.
[0029] It should be noted that in this paper, unless otherwise specified and limited, the term "connection" or its synonyms should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, and those skilled in the art can understand the specific meaning of the above-mentioned terms in the utility model according to the specific circumstances. Moreover, such as "first" and "second" expressions are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. At the same time, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment. In addition, "front", "back", "left", "right", "up", "down" and the like in this paper are referred to the placement state shown in the drawings.
[0030] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the examples, those skilled in the art should understand that: the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.
Claims
1. A device for measuring the inner diameter of a pivot deep hole, characterized in that: The inner diameter measuring device for the pivot deep hole includes a first support arm and a second support arm hinged to the middle portion of the first support arm via a hinge shaft, wherein: Part of the first support arm is the first measuring arm, and the other part is the first adjusting arm. Part of the second support arm is the second measuring arm, and the other part is the second adjusting arm. The free end of the first measuring arm is fixed with a positioning block by a fastener, and a probe is provided on the outside of the positioning block. The free end of the second measuring arm is fixed with a positioning bridge by the fastener, an instrument is provided on the inside of the positioning bridge, and a guide nut is provided on the outside. A zero position scale needle is provided in the middle of the first adjusting arm, and a first handle is provided at the free end. A ruler is fixed with a ruler in the middle of the second adjusting arm by the fastener, and a second handle is provided at the free end. The free end of the ruler passes through the zero position scale needle. The first adjusting arm and the second adjusting arm are connected with an adjusting nut by a bidirectional screw. An adjusting handle is provided in the middle of the bidirectional screw. A fastening nut is provided on the outer periphery of the screw, and the fastening nut is located on the outside of the first adjusting arm.
2. The inner diameter measuring device for a pivot deep hole according to claim 1, characterized in that: The scale is an arc-shaped scale.
3. The inner diameter measuring device for a pivot deep hole according to claim 1, characterized in that: The first support arm and the second support arm are both square hollow tubes.
4. The inner diameter measuring device for a pivot deep hole according to claim 1, characterized in that: The first measuring arm and the first adjusting arm, as well as the second measuring arm and the second adjusting arm are connected in an integrated manner.
5. The inner diameter measuring device for a pivot deep hole according to claim 1, characterized in that: The fastener is a fastening screw.