Calibrating device for calibrating instrument of sounding device
By designing a calibration device that includes a base, a lifting mechanism, and an inductive micrometer probe, the problem that the no-load calibration of the depth sounding device verification instrument cannot reproduce the real working state is solved, and accurate calibration under specific loads is achieved, thereby improving calibration accuracy and reliability.
Patent Information
- Application Number
- CN202520302594.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-24
AI Technical Summary
The existing depth sounding device calibration instrument cannot reproduce the actual working state when calibrated under no-load conditions, resulting in inaccurate measurement values.
A calibration device comprising a base, a lifting mechanism, a hardness tester load mechanism, and an inductive micrometer probe was designed. This device can calibrate depth sounding instruments under specific loads, ensuring the accuracy of measurement value transfer.
It has achieved the ability to reproduce the actual working state of the sounding device under specific loads, improving the accuracy and reliability of calibration. The static loading accuracy reaches ±0.3%, and the structural design conforms to the Abbe principle.
Smart Images
Figure CN223742239U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of calibration of depth sounding device calibration instruments, and in particular to a calibration device for depth sounding device calibration instruments. Background Technology
[0002] The depth measuring device calibrator is used for measuring the depth measuring device of a metal Rockwell hardness tester. It completes the value transfer work under the initial load of the hardness tester (29.4N or 98.1N). However, when calibrating it, it is usually under no-load conditions, which cannot reproduce its true working state and cannot guarantee the accuracy of the value. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a calibration device for a depth sounding instrument to solve the technical problems mentioned in the background art.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A calibration device for a depth sounding instrument includes a base with a lifting mechanism consisting of a handwheel and a lead screw. A platform is mounted on the top of the lead screw. A column is fixedly connected to the upper surface of the base, and a hardness tester loading mechanism is mounted on the column. The indenter of the hardness tester loading mechanism faces the platform. A base for mounting a three-bead worktable is mounted on the shaft of the hardness tester loading mechanism for mounting weights. A support rod is connected to the surface of the hardness tester loading mechanism, and a bracket is mounted on the support rod. The bracket includes a threaded rod arranged vertically, and a fixing frame is mounted on the threaded rod. The fixing frame is locked to the threaded rod by a fastening nut with a set screw. An inductive micrometer probe is mounted at the front end of the fixing frame, and an adjustment mechanism for adjusting the horizontal displacement of the inductive micrometer probe is connected to the bottom of the threaded rod.
[0006] In the above-described utility model, the adjusting mechanism further includes a slide fixedly mounted on a support rod, a slider slidably fitted on the slide, and a threaded rod fixedly connected to the slider.
[0007] Furthermore, in the above-mentioned utility model, the front end of the fixing frame is provided with a clamping part, and the inductive micrometer probe is clamped on the clamping part and locked by a locking nut.
[0008] Furthermore, in the above-mentioned utility model, the pressure head includes a spherical pressure head and a flat pressure head, and the pressure head is made of tungsten carbide.
[0009] Furthermore, in the above-mentioned utility model, the load mechanism of the hardness tester is the load mechanism of the HVA-10 type small load Vickers hardness tester.
[0010] In the above-described utility model, the lower surface of the base is further provided with a horizontal adjustment support foot for adjusting the levelness of the base.
[0011] The beneficial effects of this utility model are:
[0012] The calibration device provided by this invention is used for calibrating depth sounding instruments. It can transmit displacement values under specific loads, reproduce actual working conditions, and is more accurate and reliable. The static loading accuracy is ±0.3%, and the structural design concept conforms to Abbe's principle. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the adjustment mechanism of this utility model;
[0015] Figure 3 This is a schematic diagram of the fixing frame structure of this utility model.
[0016] In the figure, 1-Inductive micrometer probe, 2-Base, 3-Weight, 4-Loading handle, 5-Indenter, 6-Stage, 7-Lead screw, 8-Handwheel, 9-Horizontal adjustment support foot, 10-Threaded rod, 11-Fixed frame, 12-Fasting nut with set screw, 13-Adjusting mechanism, 14-Base, 15-Hardness tester loading mechanism, 16-Support rod, 17-Slide, 18-Slider, 19-Clamping part, 20-Locking nut, 21-Column. Detailed Implementation
[0017] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.
[0018] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0019] Example:
[0020] A calibration device for a depth sounding instrument, see attached document. Figure 1 -Appendix Figure 3 As shown, the system includes a base 14, with horizontal adjustment support feet 9 mounted on the lower surface of the base 14 for adjusting its levelness. A lifting mechanism consisting of a handwheel 8 and a lead screw 7 is provided on the base 14. A platform 6 is mounted on the top of the lead screw 7. A column 21 is fixedly connected to the upper surface of the base 14, and a hardness tester loading mechanism 15 is mounted on the column 21. The hardness tester loading mechanism 15 is preferably a Vickers hardness tester loading mechanism. In this embodiment, the loading mechanism of an HVA-10 type small-load Vickers hardness tester is used. This loading mechanism utilizes a buffer for load loading, which can reduce the loading speed, reduce vibration, and thus enhance calibration accuracy. The indenter 5 of the hardness tester loading mechanism 15 faces the stage 6. A base 2 for mounting the three-bead worktable is provided on the shaft of the hardness tester loading mechanism and the set weight 3. A support rod 16 is connected to the surface of the hardness tester loading mechanism. A bracket is provided on the support rod 16. The bracket includes a threaded rod 10 arranged in the vertical direction. A fixing frame 11 is fitted on the threaded rod 10. The fixing frame 11 is locked to the threaded rod 10 by a fastening nut 12 with a set screw. An inductive micrometer probe 1 is installed at the front end of the fixing frame 11. An adjustment mechanism 13 for adjusting the horizontal displacement of the inductive micrometer probe 1 is connected to the bottom of the threaded rod 10.
[0021] Specifically, the adjusting mechanism 13 includes a slide block 17 fixedly mounted on the support rod 16, a slider 18 slidably fitted on the slide block 17, and a threaded rod 10 fixedly connected to the slider 18. A locking screw is provided on the slide block 17 to fix the slider within the slide block 17. A clamping part 19 is provided at the front end of the fixing frame 11, and the inductive micrometer probe 1 is clamped on the clamping part 19 and locked by a locking nut 20.
[0022] In the calibration process, this utility model involves adjusting the horizontal adjustment support foot 9 and then using a level to ensure that the stage 6 is horizontal. A weight 3 of the appropriate nominal value is placed on the hardness tester's loading mechanism 15. During calibration, the depth measuring device calibrator is placed on the stage 6, and the indenter 5 is installed on the loading mechanism of the HVA-10 small-load Vickers hardness tester. It should be noted that if the depth measuring device calibrator is a flat probe, a ball indenter with a diameter greater than 10mm should be selected; if it is a spherical probe, a flat indenter should be selected. Furthermore, to ensure the rigidity of the indenter 5, it is made of tungsten carbide. The handwheel 8 is adjusted and moved up and down along the screw 7 until the probe of the depth measuring device calibrator on the stage 6 just contacts the indenter 5. At this point, the loading handle 4 of the hardness tester's loading mechanism 15 is pulled down, applying the full load to the probe of the depth measuring device calibrator. The inductive micrometer 1 is placed on the clamping part 19 of the fixing frame 11 and locked with the locking nut 20. The operating bracket 11 is moved up and down along the threaded rod 10. After adjusting to a suitable height, the bracket 11 is locked in place using the set screw and the fastening nut 12. The three-bead worktable is then installed on the base 2. The position of the inductive micrometer is further adjusted by sliding the slider 18 until the probe of the inductive micrometer 1 is directly opposite the center of the three-bead worktable 2. At this point, the depth sounding device calibrator and the inductive micrometer 1 are on the same force axis. The slider 18 is then secured using the locking screw. Finally, two equal-sized gauge blocks of different sizes can be placed on the three-bead worktable for displacement calibration.
[0023] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A calibration device for a depth finder verification instrument, characterized by, The base is provided with a lifting mechanism composed of a hand wheel and a screw rod, the top of the screw rod is provided with a sample stage, the upper surface of the base is fixedly connected with a stand, the stand is provided with a hardness tester load mechanism, the indenter of the hardness tester load mechanism is opposite to the sample stage, the shaft of the hardness tester load mechanism is provided with a base for installing a three-ball workbench, the surface of the hardness tester load mechanism is connected with a supporting rod, the supporting rod is provided with a support, the support comprises a threaded rod arranged in a vertical direction, the threaded rod is provided with a fixing frame, the fixing frame is locked on the threaded rod through a fastening nut with a top screw, the front end of the fixing frame is provided with an inductance micrometer probe, the bottom of the threaded rod is connected with an adjusting mechanism for adjusting the horizontal displacement of the inductance micrometer probe.
2. A calibration device for a depth finder verification instrument according to claim 1, characterised in that, The adjusting mechanism comprises a sliding seat fixedly installed on the supporting rod, and a sliding block slidingly matched on the sliding seat, and the threaded rod is fixedly connected on the sliding block.
3. The calibration device for a depth finder verification instrument of claim 1, wherein, The front end of the fixing frame is provided with a clamping part, the inductance micrometer probe is clamped on the clamping part and locked through a locking nut.
4. The calibration device for a depth finder verification instrument of claim 1, wherein, The indenter comprises a spherical indenter and a flat indenter, and the indenter is made of tungsten carbide.
5. The calibration device for a depth finder verification instrument of claim 1, wherein, The hardness tester load mechanism is a load mechanism of an HVA-10 type small load Vickers hardness tester.
6. The calibration device for a depth finder verification instrument of claim 1, wherein, The lower surface of the base is provided with a horizontal adjusting support foot for adjusting the levelness of the base.