Metallographic specimen millstone tool
By designing a metallographic sample grinding disc fixture, the problems of unstable sample clamping and limited applicability in the existing technology have been solved. Stable clamping and uniform grinding and polishing of multiple sets of samples have been achieved, making it suitable for processing various sample types.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-13
AI Technical Summary
Existing metallographic sample processing fixtures have a limited range of applications, cannot adjust dimensions, resulting in unstable sample clamping, and the smooth contact surfaces make them prone to falling off, making it impossible to achieve equal height for multiple sets of samples.
A metallographic sample grinding wheel fixture is designed, including a base plate, a pressure plate, and a limiting handle. By setting multiple sample holes and pressure block holes on the base plate and the pressure plate, and fixing the sample with locking screws, and with the limiting handle and positioning device, stable clamping and uniform grinding and polishing of multiple sets of samples can be achieved.
It achieves stable clamping and plane equal height for multiple sets of samples, has a wide range of applications, improves grinding and polishing efficiency, avoids problems such as sample drop and uneven grinding and polishing, and is suitable for processing various types of samples.
Smart Images
Figure CN223989390U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of metallographic sample processing technology, specifically relating to a metallographic sample grinding disc tooling. Background Technology
[0002] Existing metallographic sample processing fixtures have the following drawbacks:
[0003] 1. Both disc-shaped and rectangular sample slots impose strict limitations on sample size, making it impossible to achieve polishing of various samples through size adjustment. Furthermore, the contact surface is smooth, making it easy for samples to fall off when moving.
[0004] 2. The pure single-hole design cannot achieve equal height of the plane after multiple sets of samples are clamped. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a metallographic sample grinding disc tooling, which solves the technical problems of existing metallographic sample processing tooling such as limited applicability and unstable clamping.
[0006] To solve the above problems, the technical solution of this utility model is: a metallographic sample grinding disc fixture, comprising:
[0007] The chassis has several axially penetrating sample holes for placing the sample. The side of the chassis has several first mounting holes that correspond to the inner wall of the sample holes and the outer wall of the chassis. First locking screws are installed in the first mounting holes, and the locking end of the first locking screws is used to pass through the inner wall of the sample holes to press and fix the sample.
[0008] A pressure plate with several pressure block holes for installing pressure blocks. Several second mounting holes, one-to-one corresponding to the inner wall of the pressure block holes and the outer wall of the pressure plate, are provided on the side of the pressure plate. Second locking screws are installed in the second mounting holes, and the locking end of the second locking screws is used to pass through the inner wall of the pressure block holes to press and fix the pressure blocks.
[0009] The limiting grip is perpendicular to the end face of the chassis. One end of the limiting grip is fixedly connected to the end face of the chassis. A pressure plate passes through the limiting grip. The pressure block hole of the pressure plate and the sample hole of the chassis are aligned one by one along the axial direction of the limiting grip. The pressure block is used to abut and position the end of the sample that is aligned with it.
[0010] Preferably, it also includes a positioning device, which has a placement platform for placing a plurality of samples, with the end of the sample to be processed in contact with the placement platform.
[0011] Preferably, the positioning device has several limiting grooves of the same depth on its placement platform, and the end of the sample to be processed is located in the limiting groove; the limiting groove and the sample hole are aligned one by one along the axial direction of the limiting grip rod.
[0012] Preferably, the inner wall of the sample hole is provided with abrasion-resistant rubber to contact the sample.
[0013] Preferably, a level is fixedly installed on the pressure plate.
[0014] Preferably, the limiting grip is used to be assembled onto the grinding head of the metallographic automatic sample grinding machine to drive the sample to rotate for automatic grinding and polishing.
[0015] Preferably, the limiting grip is covered with silicone protective material for the operator's hand grip.
[0016] Preferably, a mounting rubber is provided between the chassis and the pressure plate, and the chassis and the pressure plate are fixedly connected by bolts.
[0017] Preferably, the pressure plate is pressed and fixed by a locking nut threaded onto the limiting grip rod.
[0018] Preferably, the locking nut and the limiting lever are positioned by a stop pin passing through both.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] This utility model of metallographic sample grinding disc fixture solves the problems of difficulty in holding, unstable clamping, and inflexible adjustment when grinding and polishing various samples by cooperating with components such as pressure plate, base plate and limiting grip rod. It can achieve the same plane height after multiple sets of samples are clamped and stabilized, which is convenient for sample processing. Applicable sample types include steel plate samples, steel pipe base material samples and steel pipe weld samples. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the chassis structure in the embodiment;
[0022] Figure 2 This is a schematic diagram of the pressure plate structure in the embodiment;
[0023] Figure 3 This is a schematic diagram of the positioning device in the embodiment;
[0024] Figure 4 This is a schematic diagram of the installation structure of the chassis and pressure plate in the embodiment;
[0025] Figure 5 This is a schematic diagram showing the positioning of the sample in the example.
[0026] Reference numerals: 1. Base plate; 11. Sample hole; 12. First mounting hole; 13. First locking screw; 14. Wear-resistant rubber; 15. Sample; 2. Pressure plate; 21. Pressure block hole; 22. Second mounting hole; 23. Second locking screw; 24. Pressure block; 3. Limiting grip; 31. Silicone protective material; 32. Locking nut; 33. Stop pin; 4. Positioning device; 41. Limiting groove; 5. Level; 6. Mounting rubber; 7. Bolt; 8. Positioning pin hole. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0028] Example: Figures 1-5 As shown, this embodiment provides a metallographic sample grinding wheel fixture, including a base plate 1, a pressure plate 2, and a limiting gripping rod 3; the base plate 1 has several axially penetrating sample holes 11, which are used to place sample 15; the side of the base plate 1 has several first mounting holes 12 corresponding to the inner wall of the sample holes 11 and the outer wall of the base plate 1, and first locking screws 13 are installed in the first mounting holes 12. The locking end of the first locking screws 13 is used to pass through the inner wall of the sample holes 11 to press and fix the sample 15; the pressure plate 2 has several pressure block holes 21, which are used to install pressure blocks 24. The side of plate 2 has several second mounting holes 22 that correspond one-to-one with the inner wall of the pressure block hole 21 and the outer wall of the pressure plate 2. The second mounting holes 22 are used to install second locking screws 23. The locking end of the second locking screws 23 is used to pass through the inner wall of the pressure block hole 21 to press and fix the pressure block 24. The limiting grip rod 3 is perpendicular to the end face of the chassis 1. One end of the limiting grip rod 3 is fixedly connected to the end face of the chassis 1. The pressure plate 2 passes through the limiting grip rod 3. The pressure block hole 21 of the pressure plate 2 and the sample hole 11 of the chassis 1 are aligned one-to-one along the axial direction of the limiting grip rod 3. The pressure block 24 is used to abut and position one end of the sample 15 that is aligned with it.
[0029] With the above setup, by opening several sample holes 11, samples 15 of different sizes can be installed and ground simultaneously, improving tooling utilization, including samples 15 with welds. One end of the sample 15 is positioned by the pressure block 24 on the pressure plate 2, while the opposite end of the sample 15 is ground, preventing the sample 15 from shifting due to applied pressure and improving the installation stability of the sample 15 during the grinding process. In use, the operator holds the limiting lever 3 and grinds the end of the sample 15 extending from the sample hole 11 on the base plate 1. Operation is more labor-saving; the operator only needs to adjust the balance, avoiding excessive force that could damage the equipment and samples. It allows for use in any location, enabling batch operations based on previous and subsequent work, without being limited by power or spatial constraints.
[0030] Specifically, in this embodiment, the sample hole 11 and the pressure block hole 21 are four in total, aligned one by one. Taking the simultaneous grinding of intergranular corrosion samples and pitting corrosion samples as an example, manual grinding requires four operations, and the final sample quality varies greatly depending on the skill level of the personnel, involving sample rework. Using this tooling reduces the working time by about 1 / 4.
[0031] In this embodiment, a metallographic sample grinding disc fixture uses a pressure plate 2 acting on a base plate 1 to achieve uniform force on the sample 15. Alternatively, the uniform force on the sample 15 can be achieved by adjusting the position of the sample 15 during the grinding and polishing process.
[0032] In this embodiment of a metallographic sample grinding wheel fixture, a positioning device 4 is also included. The positioning device 4 has a placement platform for placing several samples 15. In use, all samples 15 are placed on the placement platform of the positioning device 4, with the end of the sample 15 to be processed in contact with the placement platform. This arrangement ensures that the lengths of the samples 15 extending from the sample holes 11 of the base plate 1 are consistent, facilitating processing. Then, the sample holes 11 of the base plate 1 are fitted one by one onto the samples 15. The height of the pressure block 24 is adjusted according to the different sizes of the samples 15. The pressure block 24 abuts against one end of the sample 15. The first locking screw 13 is used to fix the sample 15 to the base plate 1, and the second locking screw 23 is used to fix the pressure block 24 to the pressure plate 2, thus completing the fixture's fixation of the sample 15. By holding the limiting handle 3, the sample 15 can be ground and polished. Changing the sample 15 only requires loosening and tightening the first locking screw 13 and the second locking screw 23 for continuous operation. By adjusting the pressure blocks 24, it is ensured that during the polishing of the sample 15, the pressure is directly applied to the sample 15 to be polished through each pressure block 24.
[0033] In a metallographic sample grinding disc fixture of this embodiment, axially aligned positioning pin holes 8 are provided on the end faces of the base plate 1 and the pressure plate 2. The positioning pins pass through the vertically aligned positioning pin holes 8 of the base plate 1 and the pressure plate 2 simultaneously to achieve positioning of the base plate 1 and the pressure plate 2, prevent the base plate 1 and the pressure plate 2 from rotating relative to each other, and improve the installation stability of the base plate 1 and the pressure plate 2.
[0034] In this embodiment of a metallographic sample grinding wheel fixture, several limiting grooves 41 of the same depth are opened on the placement platform of the positioning device 4, and the end of the sample 15 to be processed is located in the limiting groove 41; the limiting groove 41 and the sample hole 11 are aligned one by one along the axial direction of the limiting gripping rod 3. This setting plays a role in pre-positioning the sample 15, realizing the quick clamping of the sample 15 by the fixture.
[0035] In a metallographic sample grinding disc fixture of this embodiment, wear-resistant rubber 14 is provided on the inner wall of the sample hole 11 to contact the sample 15, thereby protecting the sample 15.
[0036] In this embodiment of a metallographic sample grinding fixture, a level 5 is fixedly installed on the pressure plate 2. This setting ensures that the sample 15 is in a horizontal state during the grinding process, resulting in more uniform grinding and improved grinding efficiency.
[0037] In a metallographic sample grinding fixture of this embodiment, the limiting grip 3 is used to be assembled onto the grinding head of the automatic metallographic sample grinding machine to drive the sample 15 to rotate for automatic grinding and polishing. This setting allows for flexible switching between equipment operation and manual operation.
[0038] In a metallographic sample grinding wheel fixture of this embodiment, the limiting handle 3 is covered with silicone protective material 31 for the operator's hand to grip. The use of silicone protective material 31 provides an anti-slip effect and good protection for the hand.
[0039] In a metallographic sample grinding wheel fixture of this embodiment, a rubber 6 is installed between the base plate 1 and the pressure plate 2 to provide an anti-slip effect. The base plate 1 and the pressure plate 2 are fixedly connected by bolts 7 to improve the installation stability of the base plate 1 and the pressure plate 2.
[0040] In a metallographic sample grinding disc fixture of this embodiment, the pressure plate 2 is pressed and fixed by the locking nut 32 threaded on the limiting grip rod 3, thereby improving the installation stability of the pressure plate 2.
[0041] In a metallographic sample grinding disc fixture of this embodiment, the locking nut 32 and the limiting handle 3 are positioned by the stop pin 33 passing through them, which prevents the locking nut 32 from loosening and improves the installation stability of the pressure plate 2.
[0042] This embodiment provides a metallographic sample grinding fixture that can be used with equipment such as a spectroscopic sample grinder and a metallographic polishing machine. Using this fixture allows for the sharing of multiple devices, is not limited by location or equipment, and can be adjusted in a timely manner according to the polishing effect of the sample, offering flexibility. It also avoids the problems of uneven gripping force, localized overheating, and uneven polishing of the sample 15 that occur with manual polishing. It can achieve the effect of polishing multiple samples simultaneously; it can also be connected and fixed to mechanical equipment to achieve automatic polishing.
Claims
1. A metallographic specimen disk tool, characterized by, It includes: The chassis (1) is provided with a plurality of axial sample holes (11) on the chassis (1), and the sample holes (11) are used for placing samples (15); a plurality of first mounting holes (12) are formed on the side of the chassis (1) and correspond to the inner wall of the sample hole (11) and the outer side wall of the chassis (1), the first mounting hole (12) is provided with a first locking screw (13), and the locking end of the first locking screw (13) is used for penetrating the inner wall of the sample hole (11) to tightly fix the sample (15); The pressing plate (2) is provided with a plurality of pressing block holes (21) on the pressing plate (2), and the pressing block holes (21) are used for installing pressing blocks (24); a plurality of second mounting holes (22) are formed on the side of the pressing plate (2) and correspond to the inner wall of the pressing block hole (21) and the outer side wall of the pressing plate (2), the second mounting hole (22) is provided with a second locking screw (23), and the locking end of the second locking screw (23) is used for penetrating the inner wall of the pressing block hole (21) to tightly fix the pressing block (24); The limiting handle (3) is perpendicular to the end face of the chassis (1), one end of the limiting handle (3) is fixedly connected with the end face of one end of the chassis (1), the pressing plate (2) is matched with the limiting handle (3), the pressing block hole (21) of the pressing plate (2) is aligned with the sample hole (11) of the chassis (1) along the axis direction of the limiting handle (3), and the pressing block (24) is used for abutting and positioning one end of the sample (15) aligned with it.
2. The metallographic specimen polishing disc tool of claim 1, wherein, It also includes a positioning device (4) having a placing platform for placing a plurality of samples (15), and the end to be machined of the sample (15) is in contact with the placing platform.
3. The metallographic specimen polishing disc tool of claim 2, wherein, A plurality of limiting grooves (41) with the same depth are formed on the placing platform of the positioning device (4), and the end to be machined of the sample (15) is located in the limiting groove (41); the limiting groove (41) is aligned with the sample hole (11) along the axis direction of the limiting handle (3).
4. The metallographic specimen polishing disc tool of claim 1, wherein, The inner wall of the sample hole (11) is provided with wear-resistant rubber (14) to contact the sample (15).
5. The metallographic specimen polishing disc tool of claim 1, wherein, The level (5) is fixedly installed on the pressing plate (2).
6. The metallographic specimen polishing puck tool of claim 1, wherein, The limiting handle (3) is used for assembling the grinding head of the metallographic automatic sample grinder to drive the sample (15) to rotate for automatic grinding and polishing.
7. The metallographic specimen polishing disk tool of claim 1, wherein, The limiting handle (3) is coated with silica gel protective material (31) for the operator to hold with hands.
8. The metallographic specimen polishing puck tool of claim 1, wherein, The mounting rubber (6) is arranged between the chassis (1) and the pressing plate (2), and the chassis (1) and the pressing plate (2) are fixedly connected through the bolts (7).
9. The metallographic specimen polishing disk tool of claim 1, wherein, The pressing plate (2) is tightly fixed by the locking nut (32) threadedly installed on the limiting handle (3).
10. The metallographic specimen polishing puck tool of claim 9, wherein, The locking nut (32) and the limiting handle (3) are positioned by the stop pin (33) penetrating both.