A fixing device for metallographic polishing

Abstract

The utility model relates to a kind of to be ground sample fixing device for metallographic grinding, it is characterized in that, including pedestal and locking device;The inside of the pedestal is equipped with an accommodating cavity for placing to be ground sample, the top and side wall of the accommodating cavity are equipped with the opening communicated with outside respectively;The locking device includes: pressure top mechanism, the top of the pedestal is set, for from above pressure tight the to be ground sample;Side top mechanism, the side top mechanism at least one group, setting with the pedestal side wall, for from side top tight the to be ground sample;Grip mechanism, setting with the pedestal side wall, for fixing the to be ground sample;The above to be ground sample fixing device is based on between traditional manual and modern mechanical automatic method sample grinding, the multidirectional fixation of to be ground sample is realized by pressure top mechanism, side top mechanism and grip mechanism, fully achieves the appearance of balanced grinding effect of grinding surface, guarantees sample grinding quality, and provides reliable guarantee to balanced nature and grinding surface contact sufficiency in the process of transition.

Description

Technical Field

[0001] This utility model relates to the field of metallographic sample preparation technology, specifically to a sample fixing device for metallographic grinding. Background Technology

[0002] Currently, the existing grinding methods are manual finger grinding and automated mechanical grinding. The traditional manual grinding method has strong autonomy, flexibility, and control, but requires a high level of experience. The modern automated mechanical grinding method is expensive, and daily maintenance of the machine and operator training are essential.

[0003] To address the aforementioned issues, a sample fixing device for metallographic grinding is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a sample fixing device for metallographic grinding, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sample fixing device for metallographic grinding, comprising a base and a locking device.

[0006] The base has an internal cavity for placing the sample to be ground, and the top and side walls of the cavity have openings that communicate with the outside.

[0007] The locking device includes: a top pressing mechanism, disposed on the top of the base, for pressing the sample to be ground from above; a side pressing mechanism, at least one set of which is disposed on the side wall of the base, for pressing the sample to be ground from the side; and a handle mechanism, disposed on the side wall of the base, for fixing the sample to be ground.

[0008] Furthermore, the base includes a lower cylinder and an upper end cap; the pressing mechanism is installed on the top of the upper end cap; the side-top mechanism and the handle mechanism are evenly installed on the side wall of the lower cylinder.

[0009] Furthermore, the top of the upper end cap is provided with bolt holes for installing the pressing mechanism; the pressing mechanism includes a pressing screw seat, a bolt body, a first fixed sample block, and a pressing lower seat, the pressing lower seat being installed between the bottom of the first fixed sample block and the top of the sample to be ground; the bolt body extends into a preset slot in the first fixed sample block through the bolt hole at the top of the upper end cap, and the extension length of the bolt body is adjusted by the pressing screw seat.

[0010] Furthermore, the end of the bolt body that extends into the pre-set slot of the first fixing sample block is a conical tip.

[0011] Furthermore, the lower cylinder has four bolt holes spaced equally around its sidewall for mounting the side top mechanism and the grip mechanism.

[0012] The grip mechanism includes a grip screw seat and a grip bolt body.

[0013] The grip bolts extend into the receiving cavity through two opposite bolt holes in the lower cylinder to fix the sample to be ground, and the length of the grip bolts extending into the cavity is adjusted by the grip screw seat.

[0014] Furthermore, the side-top mechanism includes a side-top bolt, a side-top screw seat, and a second fixing block.

[0015] The second fixed sample block is disposed between the sample to be ground and the inner wall of the lower cylinder side.

[0016] The side-top bolts extend into the second fixed sample block through two other opposite bolt holes in the lower cylinder, and the length of the side-top bolts extending into the cylinder is adjusted by the side-top screw seat.

[0017] Furthermore, the side-top bolt extending into one end of the second fixing sample block is a conical tip.

[0018] Furthermore, the base is made of a high-entropy alloy, and the lower cylinder and the upper end cap are an integral structural design.

[0019] Furthermore, the upper end cap has a semi-circular structure.

[0020] Analysis shows that this utility model provides a sample fixing device for metallographic grinding, including a base and a locking device. The base has a cavity for holding the sample, and the top and side walls of the cavity are respectively provided with openings communicating with the outside. The locking device includes: a pressing mechanism, located on the top of the base, for pressing the sample from above; a side pressing mechanism, at least one set of which is located on the side wall of the base, for pressing the sample from the side; and a handle mechanism, located on the side wall of the base, for fixing the sample.

[0021] The grinding sample placed in the base cavity is fixed in multiple directions by the top pressing mechanism, side pressing mechanism and handle mechanism to ensure that the grinding sample will not loosen or rotate during grinding, so as to counteract the friction force received by the grinding sample. In addition, the locking device can be adjusted to accommodate grinding samples of different specifications, thereby improving the adaptability of the device.

[0022] The entire fixing device is lifted by the handle mechanism and ground and polished on metallographic sandpaper or polishing cloth, thus connecting the person and the fixing device. Due to the stable fixation of the locking device, the consistency between the samples to be ground is ensured. In summary, the quality of the grinding sample is guaranteed, the production cost is low, and the grinding efficiency of the sample is not affected.

[0023] Compared with the closest existing technology, the technical solution provided by this utility model has the following beneficial effects:

[0024] Traditional manual grinding methods offer high autonomy, flexibility, and control, but require extensive experience. Modern automated grinding methods are costly, and routine maintenance and operator training are essential. This invention addresses these differences by using a base to provide a cavity for the sample, a locking device for multi-directional physical fixation, and a handle mechanism to connect the operator and the fixing device. This achieves a uniform grinding effect, ensuring sample quality. Furthermore, its simple structure results in low manufacturing costs, requires no personal experience for maintenance, and allows for quick and easy upgrades. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a sample fixing device for metallographic grinding, which is an example of the present invention.

[0026] Figure 2 This is a front view of a sample fixing device for metallographic grinding, as an example of this utility model.

[0027] Figure 3 This is a cross-sectional view (AA) of a sample fixing device for metallographic grinding, which is an example of this utility model.

[0028] Figure 4 This is a schematic diagram of the lower cylinder of a sample fixing device for metallographic grinding, as an example of the present invention.

[0029] In the diagram: 1. Base; 101. Lower cylinder; 102. Upper end cap; 2. Receiving cavity; 3. Top pressing mechanism; 301. Screw seat; 302. Bolt body; 303. First fixed sample block; 304. Lower pressing seat; 4. Side pressing mechanism; 401. Side pressing bolt body; 402. Side pressing screw seat; 403. Second fixed sample block; 5. Handle mechanism; 501. Handle screw seat; 502. Handle bolt body; 6. Rubber pad. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0034] like Figures 1 to 3 As shown, this utility model provides a technical solution: a sample fixing device for metallographic grinding, including a base 1 and a locking device.

[0035] The base 1 has a cavity 2 for placing the sample to be ground inside, and the top and side walls of the cavity 2 are respectively provided with openings that communicate with the outside.

[0036] The locking device includes: a pressing mechanism 3, which is located on the top of the base 1 and is used to press the sample to be ground from above; a side pressing mechanism 4, at least one set of which is located on the side wall of the base 1 and is used to press the sample to be ground from the side; and a grip mechanism 5, which is located on the side wall of the base 1 and is used to fix the sample to be ground.

[0037] The sample to be ground is placed in the receiving cavity 2 inside the base 1, and the sample is fixed in multiple directions by the locking device. The handle mechanism 5 connects the person and the fixing device, so as to achieve a uniform grinding effect and facilitate the full output of force to improve grinding efficiency.

[0038] Preferably, the base includes a lower cylinder 101 and an upper end cap 102, the top pressing mechanism 3 is installed on the top of the upper end cap 102, and the side top mechanism 4 and the handle mechanism 5 are evenly installed on the side wall of the lower cylinder 101.

[0039] The lower cylinder 101 mainly serves as the working chamber and force-bearing structure. It is usually cylindrical in shape. The cylindrical structure distributes the force evenly and is easy to process. The side top mechanism 4 and the grip mechanism 5 are evenly installed on the side wall of the lower cylinder 101. This ensures that the applied force and the weight distribution of the device are balanced, preventing the generation of eccentric torque during grinding and ensuring a more uniform grinding surface.

[0040] The upper end cap 102 is the top cover of the device and the mounting base for performing the clamping function. As the top of the receiving cavity, the clamping mechanism 3 is mounted on its top. The clamping force is transmitted to the main body of the base through the upper end cap, forming a robust force flow path.

[0041] More preferably, the top of the upper end cap 102 is provided with bolt holes for installing the pressing mechanism 3; the pressing mechanism 3 includes a pressing screw seat 301, a bolt body 302, a first fixed sample block 303 and a pressing lower seat 304; the pressing lower seat 304 is installed between the bottom of the first fixed sample block 303 and the top of the sample to be ground; the bolt body 302 extends into the preset slot of the first fixed sample block 303 through the bolt hole at the top of the upper end cap 102, and the extension length of the bolt body 302 is adjusted by the pressing screw seat 301.

[0042] The anti-loosening structure of the pressure screw seat 301 and the bolt body 302 ensures that the clamping force will not decrease during the grinding process; and through the first fixed sample block 303 and the pressure lower seat 304, the clamping force is transmitted to the pressure lower seat 304 through the first fixed sample block 303, thereby fixing the sample to be ground. The pressure lower seat 304 is to prevent the first fixed sample block 303 from directly contacting the sample to be ground, thus protecting the surface of the sample to be ground.

[0043] Preferably, the end of the bolt body 302 that extends into the preset slot of the first fixing sample block 303 is a conical tip sample.

[0044] By making point-to-point contact between the conical tip and the first fixed sample block 303, the applied force is always vertically downward, minimizing lateral force and thus reducing the impact on the fixed force of the sample to be ground.

[0045] Preferably, such as Figure 4As shown, the lower cylindrical body 101 has four bolt holes at equal intervals around its side wall for mounting the side top mechanism 4 and the grip mechanism 5; the grip mechanism 5 includes a grip screw seat 501 and a grip bolt body 502; the grip bolt body 502 extends into the receiving cavity through two opposite bolt holes in the lower cylindrical body 101 to fix the sample to be ground, and the length of the grip bolt body 502 extending into the cavity is adjusted by the grip screw seat 501.

[0046] The anti-loosening structure of the handle screw seat 501 and the handle bolt body 502 ensures that the clamping force of the sample to be ground will not decrease in this direction during the grinding process. The length of the handle bolt body 502 extending into the receiving cavity can be adjusted according to the actual working conditions to improve the adaptability of the device to samples of different specifications. The clamping force is directly transmitted to the sample to be ground through the direct contact between the handle bolt body 502 and the sample to be ground, which improves the fixing effect of the sample to be ground.

[0047] The side-top mechanism 4 includes a side-top bolt 401, a side-top screw seat 402, and a second fixed sample block 403; the second fixed sample block 403 is disposed between the sample to be ground and the inner wall of the side of the lower cylinder 101; the side-top bolt 401 extends into the second fixed sample block 403 through two other opposite bolt holes of the lower cylinder 101, and the extension length of the side-top bolt 401 is adjusted by the side-top screw seat 402.

[0048] The anti-loosening structure of the side top bolt 401 and the side top screw seat 402 ensures that the clamping force of the sample to be ground will not decrease in this direction during the grinding process, and the length of the side top bolt 401 extending into the receiving cavity can be adjusted at any time according to the actual working conditions, further improving the adaptability of the device to samples of different specifications; the second fixed sample block 403 contacts the sample to be ground and applies clamping force to the sample to be ground, avoiding direct contact between the side top bolt 401 and the sample to be ground, and reducing damage to the sample to be ground.

[0049] In this embodiment, a rubber ring 6 is installed between the second fixed sample block 403 and the sample to be ground, which further reduces damage to the sample to be ground.

[0050] Preferably, the end of the side top bolt 401 that extends into the second fixing sample block 403 is a conical top sample.

[0051] By making point-to-point contact between the conical tip and the second fixed sample block 403, the applied force is always along this direction, minimizing the dispersion of force in other directions, thereby reducing the impact on the fixed force of the sample to be ground and improving the fixing effect of the sample to be ground.

[0052] Preferably, the base 1 is made of a high-entropy alloy, and the lower cylinder 101 and the upper end cap 102 are designed as an integral structure.

[0053] A lightweight, refractory, high-entropy alloy is used as the base 1. It has high density, significant self-weight effect, excellent balance and stability of movement, good plasticity and easy processing, and excellent material stiffness.

[0054] The integrated structure eliminates the connection interface between the lower cylinder 101 and the upper end cap 102, preventing loosening at the connection between the lower cylinder 101 and the upper end cap 102, and providing an absolutely stable reference for the sample to be ground.

[0055] The upper end cap 102 has a semi-circular structure, which reduces material consumption while meeting the requirements of the cavity.

[0056] The specific process of grinding the sample using this device is as follows:

[0057] In the preparation stage, loosen the pressure seat 304, the handle screw seat 501, and the side top screw seat 402, place the sample to be ground in the receiving cavity, and tighten the pressure seat 304, the handle screw seat 301, and the side top screw seat 402 respectively, so that the pressure mechanism 3, the handle mechanism 5, and the side top mechanism 4 fix the sample to be ground in the receiving cavity from all directions. In the working stage, by gripping the handle and exerting force with both arms, push the fixing device to make the grinding surface of the sample to be ground fully contact the grinding surface.

[0058] In summary, this utility model achieves the following technical effects:

[0059] 1) This utility model, through the grip mechanism 5, fully considers the fit of hand shape to enhance the firmness of the grip, and provides a reliable guarantee for the balance and sufficient contact of the grinding surface during the pushing process.

[0060] 2) This utility model achieves the top conical fixation of the longitudinal axis and the transverse axis through the top pressing mechanism 3, the side pressing mechanism 4 and the handle mechanism 5, so as to fully realize the uniform grinding effect of the grinding surface.

[0061] 3) The base 1 of this utility model is made of high-entropy alloy, which has high density, obvious self-weight effect, excellent balance and movement stability, good plasticity and easy processing, and excellent material stiffness.

[0062] 4) The base 1 of this utility model includes a lower cylinder 101 and an upper end cap 102. It adopts an integrated structure, which eliminates the connection interface between the lower cylinder 101 and the upper end cap 102, avoids loosening at the connection between the lower cylinder 101 and the upper end cap 102, and improves the stability of the device.

[0063] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sample fixing device for metallographic grinding, characterized in that, Includes a base and a locking device; The base has an internal cavity for placing the sample to be ground, and the top and side walls of the cavity have openings that communicate with the outside. The locking device includes: A pressing mechanism is provided at the top of the base for pressing the sample to be ground from above; A side-supporting mechanism, at least one set of which is disposed on the side wall of the base, for pressing the sample to be ground from the side; A grip mechanism is provided on the side wall of the base for fixing the sample to be ground.

2. The sample fixing device according to claim 1, characterized in that, The base includes a lower cylindrical body and an upper end cap; The pressure-pressing mechanism is installed on the top of the upper end cap; The side top mechanism and the grip mechanism are evenly installed on the side wall of the lower cylinder.

3. The sample fixing device according to claim 2, characterized in that, The top of the upper end cap is provided with bolt holes for installing the top pressing mechanism; The pressure-compressing mechanism includes a pressure-compressing spiral seat, a bolt body, a first fixing block, and a pressure-compressing lower seat; The pressure top and pressure seat are installed between the bottom of the first fixed sample block and the top of the sample to be ground; The bolt body extends into the pre-set slot of the first fixing sample block through the bolt hole at the top of the upper end cap, and the extension length of the bolt body is adjusted by the pressure screw seat.

4. The sample fixing device according to claim 3, characterized in that, The end of the bolt body that extends into the pre-set slot of the first fixing sample block is a conical tip.

5. The sample fixing device according to claim 2, characterized in that, The lower cylinder has four bolt holes at equal intervals around its side wall for installing the side top mechanism and the grip mechanism. The grip mechanism includes a grip screw seat and a grip bolt body; The grip bolts extend into the receiving cavity through two opposite bolt holes in the lower cylinder to fix the sample to be ground, and the length of the grip bolts extending into the cavity is adjusted by the grip screw seat.

6. The sample fixing device according to claim 5, characterized in that, The side-top mechanism includes a side-top bolt, a side-top screw seat, and a second fixed sample block; The second fixed sample block is disposed between the sample to be ground and the inner wall of the lower cylinder side; The side-top bolts extend into the second fixed sample block through two other opposite bolt holes in the lower cylinder, and the length of the side-top bolts extending into the cylinder is adjusted by the side-top screw seat.

7. The sample fixing device according to claim 6, characterized in that, The side-top bolt extending into one end of the second fixed sample block is a conical top sample.

8. The sample fixing device according to claim 2, characterized in that, The base is made of high-entropy alloy, and the lower cylinder and upper end cap are designed as an integrated structure.

9. The sample fixing device according to claim 8, characterized in that, The upper end cap has a semi-circular structure.

Images