A spectral analysis grinding sample clamping device

Abstract

The utility model provides a spectral analysis grinding sample clamping device, which clamps the sample and fixes it downward through adjusting studs in multiple directions, effectively solving the problem that irregular samples are difficult to clamp firmly. The large cross-section design of the second cavity also avoids the splashing of iron filings, further improving the safety of operation. In addition, in actual applications, the sample is placed in the center of the device, and the position and distance are first determined by the first adjusting stud, and then firmly clamped by multiple second adjusting studs. The whole process is simple and easy and can ensure that the sample shape is not destroyed. Therefore, the utility model not only improves the safety and accuracy of spectral analysis sample preparation, but also simplifies the operation process, and is suitable for various irregular and magnetic or non-magnetic samples.

Description

Technical Field

[0001] The utility model relates to the technical field of spectrum analysis, in particular to a grinding sample clamping device used in spectrum analysis. Background Art

[0002] Spectrometers are widely used in the market for chemical composition determination due to their advantages such as fast speed and accurate results. However, in spectral analysis, sample preparation is still challenging.

[0003] In the traditional sample preparation method, for ping-pong ball-type samples, the staff directly holds the sample on the high-speed rotating grinding wheel for grinding and polishing, which not only easily causes the sample to splash, causing safety hazards, but also may cause the sample to overheat, burn, slip, fly away, etc. due to unstable holding, thus affecting the accuracy of the test results. Especially for magnetic samples, if the clamping is unstable, it may cause the sample to move or vibrate during the test, which not only brings difficulties to the grinding sample, but also affects the uniformity and stability of the magnetic field, affecting the measurement results of the magnetization characteristics.

[0004] In addition, for irregularly shaped specimens, the usual practice is to fix them by welding auxiliary parts before grinding, but this method also has significant disadvantages. First, the temperature change during welding will affect the chemical composition of the specimen, resulting in deviations in the analysis results; second, the use of welding auxiliary parts increases the complexity and cost of the operation and reduces the preparation efficiency. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides a spectral analysis grinding sample clamping device.

[0006] It comprises a handle, a threaded hole and an adjusting stud, wherein the threaded hole comprises a first threaded hole and a second threaded hole, and the adjusting stud comprises a first adjusting stud and a second adjusting stud;

[0007] The handle is provided with two interconnected cavities, namely a first cavity and a second cavity; the cross-sectional area of ​​the second cavity is larger than the cross-sectional area of ​​the first cavity, and an opening is provided at one end of the second cavity away from the first cavity;

[0008] A first threaded hole is provided at the center of the top of the first cavity, and the first adjusting stud extends into the first cavity through the first threaded hole, can move along the axis direction of the first cavity, and can enter and exit the second cavity;

[0009] The side of the second cavity is provided with a plurality of second threaded holes and equipped with a plurality of second adjusting studs, each of the second adjusting studs extends into the second cavity through its corresponding second threaded hole and can move in a direction perpendicular to the axis of the first cavity;

[0010] One end of the first adjusting stud extending into the handle is provided with a first end face, and one end of each of the second adjusting studs extending into the second cavity is provided with a second end face, and the first end face and multiple second end faces form a clamping space for accommodating the sample product, and the size of the clamping space is adjusted by changing the position of the first adjusting stud relative to the first threaded hole, and / or the position of one or more of the second adjusting studs relative to their corresponding second threaded holes.

[0011] In a preferred embodiment, the plurality of second adjustment studs are coplanar or non-coplanar.

[0012] In a more preferred embodiment, a plurality of the second adjusting screws are located in the same plane.

[0013] In a preferred embodiment, the plurality of second adjusting screws are symmetrically distributed at equal intervals. More preferably, the number of the second adjusting screws is four, which are distributed at 90 degrees on the side of the second cavity, that is, the four second adjusting screws fix the sample from four directions.

[0014] In a preferred embodiment, the end surface of the first cavity away from the opening is hemispherical, conforming to the ergonomic design and convenient for gripping.

[0015] In a preferred embodiment, the axis of the first cavity coincides with the axis of the second cavity.

[0016] In a preferred embodiment, the second cavity is provided with one or more water injection holes. More preferably, the plurality of water injection holes are symmetrically distributed at equal intervals on the upper end surface of the second cavity.

[0017] In a preferred embodiment, the clamping device further comprises a fixing mechanism. Preferably, the fixing mechanism comprises a locking device and / or a fastening screw.

[0018] In a preferred embodiment, the material of the clamping device is one or more combinations of stainless steel (non-magnetic), aluminum alloy, engineering plastics, and carbon fiber composite materials.

[0019] In a preferred embodiment, a clamping head is connected to the first end surface.

[0020] In a preferred embodiment, the first end surface is provided with a rubber pad.

[0021] In a preferred embodiment, the first end surface is connected to a clamping head, and the clamping head is provided with a rubber pad.

[0022] In a preferred embodiment, the second end surface is provided with an anti-slip pad.

[0023] In a preferred embodiment, the method for using the clamping device comprises the following steps: manually adjusting a first adjusting stud located at the axis of the first cavity to fix the position and the distance of the sample;

[0024] After the position is fixed, one or more second adjustment studs located on the side of the second cavity are manually adjusted to fix the sample from multiple directions to ensure that the sample is firmly clamped. After the clamping is stable, the sample can be ground.

[0025] In a preferred embodiment, the adjustment method of the second adjusting screw is opposite-side adjustment.

[0026] In a preferred embodiment, during the sample grinding process, water is added through the water injection hole to prevent the sample from overheating, which may cause the sample temperature to be too high and affect the test results.

[0027] Compared with the prior art, the beneficial effects of the utility model are:

[0028] The utility model provides a spectral analysis grinding sample clamping device, which clamps the sample and fixes it downward through adjusting studs in multiple directions, effectively solving the problem that irregular samples are difficult to clamp firmly. The large cross-section design of the second cavity also avoids the splashing of iron filings, further improving the safety of operation. In addition, in actual applications, the sample is placed in the center of the device, and the position and distance are first determined by the first adjusting stud, and then firmly clamped by multiple second adjusting studs. The whole process is simple and easy and can ensure that the sample shape is not destroyed. Therefore, the utility model not only improves the safety and accuracy of spectral analysis sample preparation, but also simplifies the operation process, and is suitable for various irregular and magnetic or non-magnetic samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a schematic structural cross-sectional view of an embodiment of the utility model.

[0031] Figure 2 It is a top view schematic diagram of an embodiment of the utility model.

[0032] The following are the descriptions of the reference numerals:

[0033] 1. First adjusting stud; 2. First threaded hole; 3. First cavity; 4. Second threaded hole; 5. Clamping head; 6. Rubber pad; 7. Anti-slip pad; 8. Water injection hole; 9. Second cavity; 10. Second adjusting stud. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0038] This embodiment provides a spectral analysis grinding sample clamping device, such as Figure 1As shown, it includes a handle (a first cavity 3 and a second cavity 9), an adjusting stud (a first adjusting stud 1 and a second adjusting stud 10), a threaded hole (a first threaded hole 2 and a second threaded hole 4), a clamping head 5, a water injection port 8, a rubber pad 6 and an anti-slip pad 7.

[0039] The cross-sectional area of ​​the second cavity 9 is larger than that of the first cavity 3, and the axis of the second cavity 9 coincides with the axis of the first cavity 3. An opening is provided at one end of the second cavity 9 away from the first cavity 3, and the second cavity 9 is also provided with a water injection hole 8. The end surface of the first cavity 3 away from the opening is hemispherical, conforming to ergonomic design and convenient for gripping.

[0040] A first threaded hole 2 is provided at the top center of the first cavity 3 , and the first adjusting stud 1 extends into the first cavity 3 through the first threaded hole 2 , can move along the axial direction of the first cavity 3 , and can enter and exit the second cavity 9 .

[0041] The side of the second cavity 9 is provided with four second threaded holes 4 and equipped with four second adjusting screws 10 . Each of the second adjusting screws 10 extends into the second cavity 9 through its corresponding second threaded hole 4 and can move in a direction perpendicular to the axis of the first cavity 3 .

[0042] The end of the first adjusting stud 1 extending into the handle is provided with a first end surface, and the first end surface of the first adjusting stud 1 is connected with a clamping head 5 for fixing the sample downward, and a rubber pad 6 is also provided at the front end of the clamping head 5.

[0043] One end of each second adjusting screw 10 extending into the second cavity 9 is provided with a second end surface, and the second end surface is provided with an anti-slip pad 7. The four second adjusting screws 10 are symmetrically distributed in the same plane at 90 degrees and with equal spacing.

[0044] The first end face and multiple second end faces form a clamping space for accommodating the sample product, and the size of the clamping space is adjusted by changing the position of the first adjusting stud 1 relative to the first threaded hole 2, and / or the position of one or more (no more than four) second adjusting studs 10 relative to their corresponding second threaded holes 4.

[0045] The steps for using the spectral analysis sample holding device of this embodiment are as follows:

[0046] (1) Place the sample: Prepare a magnetic sample, and let the sample protrude from the disc by a certain distance (3-5 mm) to facilitate observation of the clamping situation. Place the sample in the center of the clamping device, make preliminary adjustments to the clamping device, and rotate the first adjustment stud 1 so that the material is roughly within the clamping range.

[0047] (2) Preliminary adjustment on the opposite side: Starting from one side of the sample, gently rotate or move the second adjustment stud 10, the first cavity 3 or the first adjustment stud 1 of the clamping device described in this embodiment to bring it close to the edge of the sample. Be careful not to use excessive force to avoid clamping the material or damaging the clamping device.

[0048] The same preliminary adjustment is performed on the other side of the specimen by using the same adjustment mechanism (such as the second adjustment stud 10, the first cavity 3 or the first adjustment stud 1) to ensure that the clamping forces on both sides are approximately equal.

[0049] (3) Check the clamping condition: After making preliminary adjustments on the opposite side, check the clamping condition of the specimen. Observe whether the specimen is evenly stressed and whether there is any deflection or distortion. If there is deflection or distortion, fine-tuning is required.

[0050] (4) Fine adjustment: According to the clamping condition of the sample, gently rotate or move the adjustment mechanism of the clamping device (such as the second adjustment stud 10, the first cavity 3 or the first adjustment stud 1) to make fine adjustments on both sides. Adjust gradually until the sample is clamped evenly and stably.

[0051] During the fine-tuning process, the sample can be gently shaken to check whether the clamping is firm. (5) Fixing the clamping device: After ensuring that the sample is stably clamped, fix the adjustment mechanism of the clamping device (such as the second adjustment stud 10, the first cavity 3 or the first adjustment stud 1) to prevent movement during subsequent operations.

[0052] Preferably, the reinforcement can also be achieved by using a fixing method of a locking device.

[0053] (6) Inspection and testing: Finally, check the clamping condition of the specimen again to ensure that the clamping device does not cause damage or impact to the specimen.

[0054] Also, simple tests such as gently shaking the specimen or applying a slight external force can be performed to check whether the clamping is firm and reliable.

[0055] (7) Sample grinding: After the clamping device described in this embodiment stably clamps the sample, the sample grinding machine is started to start the sample grinding process.

[0056] During the grinding process, water is added to the disc through the water injection hole 8 as needed to reduce the sample temperature. The large cross-section of the second cavity 9 also prevents the sample debris from splashing.

[0057] In summary, the present embodiment provides a spectral analysis grinding sample clamping device, which clamps the sample and fixes it downward through adjusting studs in multiple directions, effectively solving the problem that irregular samples are difficult to clamp firmly; the anti-skid pad and rubber pad design at the front end of the stud and the reinforcement of the fixing mechanism enhance the stability of the clamping. In addition, the water injection hole on the upper end face of the second cavity allows water to be added during the grinding process, effectively preventing the sample from overheating and ensuring the accuracy of the test results. The large cross-sectional design of the second cavity also avoids the splashing of iron filings, further improving the safety of operation. In addition, in practical applications, the sample is placed in the center of the device, and the position and distance are first determined by adjusting the middle first adjusting stud, and then the surrounding second adjusting studs are adjusted for firm clamping. The whole process is simple and easy and can ensure that the sample shape is not destroyed. Therefore, the utility model not only improves the safety and accuracy of spectral analysis sample preparation, but also simplifies the operation process, is suitable for various standard, irregular, magnetic or non-magnetic samples, and shows its unique advantages of simple structure, fast sample preparation speed and good effect.

[0058] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A spectral analysis grinding sample clamping device, characterized in that: It includes a handle, a threaded hole and an adjusting stud; the threaded hole includes a first threaded hole and a second threaded hole, and the adjusting stud includes a first adjusting stud and a second adjusting stud; The handle is provided with two interconnected cavities, namely a first cavity and a second cavity; the cross-sectional area of ​​the second cavity is larger than the cross-sectional area of ​​the first cavity, and an opening is provided at one end of the second cavity away from the first cavity; A first threaded hole is provided at the center of the top of the first cavity, and the first adjusting stud extends into the first cavity through the first threaded hole, can move along the axis direction of the first cavity, and can enter and exit the second cavity; The side of the second cavity is provided with a plurality of second threaded holes and equipped with a plurality of second adjusting studs, each of the second adjusting studs extends into the second cavity through its corresponding second threaded hole and can move in a direction perpendicular to the axis of the first cavity; One end of the first adjusting stud extending into the handle is provided with a first end face, and one end of each of the second adjusting studs extending into the second cavity is provided with a second end face, and the first end face and multiple second end faces form a clamping space for accommodating the sample product, and the size of the clamping space is adjusted by changing the position of the first adjusting stud relative to the first threaded hole, and / or the position of one or more of the second adjusting studs relative to their corresponding second threaded holes.

2. The clamping device according to claim 1, characterized in that: The plurality of second adjustment studs are coplanar or non-coplanar.

3. The clamping device according to claim 2, characterized in that: The plurality of second adjusting screws are located in the same plane.

4. The clamping device according to claim 1, characterized in that: The plurality of second adjusting studs are symmetrically distributed at equal intervals.

5. The clamping device according to claim 4, characterized in that: The number of the second adjusting screws is four, and they are distributed at 90 degrees on the side of the second cavity, that is, the four second adjusting screws fix the sample from four directions.

6. The clamping device according to claim 1, characterized in that: The end surface of the first cavity away from the opening is hemispherical.

7. The clamping device according to claim 1, characterized in that: The second cavity is provided with one or more water injection holes.

8. The clamping device according to claim 7, characterized in that: The multiple water injection holes are symmetrically distributed at equal intervals on the upper end surface of the second cavity.

9. The clamping device according to claim 1, characterized in that: The first end surface is provided with a rubber pad.

10. The clamping device according to claim 1, characterized in that: The second end surface is provided with an anti-slip pad.

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