A silver sheet corrosion test auxiliary polishing jig

Abstract

The utility model discloses a kind of silver sheet corrosion test is used to assist polishing clamp, it is related to petrochemical product detection equipment.The utility model includes clamping component one, clamping component two, screw rod and screw rod regulator, clamping component one includes chuck one and handle one, clamping component two includes chuck two and handle two, the handle portion of clamping component one and two is respectively provided with reverse thread through-hole, screw rod is respectively passed through the through-hole on handle portion and is connected with handle portion thread, screw rod regulator is connected with screw rod thread and is arranged between two handle portions, chuck one is fixedly connected with chuck two at the interface with handle one through bolt, the end face of chuck one and two is equipped with three levels of symmetrical steps: step one to three and step four to six, form multilayer clamping surface.The utility model is through reverse thread linkage and multistage step design, realize single hand operation, accurate clamping and anti-skid anti-deviation, significantly improve polishing efficiency and polishing quality.

Description

Technical Field

[0001] This utility model relates to the technical field of petrochemical product testing equipment, specifically to an auxiliary grinding fixture for silver sheet corrosion testing. Background Technology

[0002] In the field of petrochemical testing, silver sheet corrosion tests must strictly adhere to standards such as ASTM D130, requiring extremely high uniformity of the sample surface. Uniform polishing of the silver sheet surface is a crucial step in ensuring the accuracy of experimental data. Traditional polishing methods often rely on manual operation or simple fixtures, which have the following significant drawbacks: Insufficient clamping stability: Existing fixtures mostly use fixed structures, making it difficult to adapt to silver sheets of different sizes. Furthermore, adjusting the clamping force can easily lead to excessively loose clamping (silver sheet displacement) or excessively tight clamping (silver sheet deformation), affecting polishing uniformity; Low operational efficiency: Manual polishing depends on operator skill, resulting in poor consistency; and some fixtures lack user comfort and have low polishing efficiency.

[0003] Chinese patent document CN203390731U, published on January 15, 2014, discloses a test piece grinding fixture, including a base. A first positioning block and a second positioning block are arranged parallel to each other on the upper surface of the base. The first positioning block has a positioning screw hole on the side near the second positioning block, and a positioning screw rod, fixed to the positioning screw hole, passes through the second positioning block. The first positioning block has a first adjusting screw hole, and the second positioning block has a second adjusting screw hole corresponding to the first adjusting screw hole. Adjusting bolts, respectively cooperating with the first and second adjusting screw holes, pass through the first and second adjusting screw holes in sequence, and the extension direction of the axis of the adjusting bolt is parallel to the extension direction of the axis of the positioning screw rod. This utility model is simple and easy to operate, reducing the labor intensity of operators. Simultaneously, the ground test pieces have relatively uniform thickness and gloss, resulting in good grinding effect and high grinding efficiency.

[0004] However, the above technical solutions are prone to problems with the clamping force adjustment, such as clamping too loosely (silver sheet displacement) or too tightly (silver sheet deformation). Furthermore, the tooling ergonomics are not optimized, resulting in low operating and polishing efficiency. Utility Model Content

[0005] To address the technical problems existing in the prior art, this utility model provides an auxiliary grinding fixture for silver sheet corrosion testing, which solves the problems of size adaptability and force balance in silver sheet clamping, and can improve grinding efficiency and grinding quality while maintaining clamping force.

[0006] This utility model is achieved through the following technical solution:

[0007] An auxiliary grinding fixture for silver sheet corrosion testing includes a screw, a screw adjuster, a first clamping assembly, and a second clamping assembly. The first clamping assembly includes a chuck and a handle, and the second clamping assembly includes a chuck and a handle. The first and second handles have through holes with opposite thread directions. The screw passes through the through holes in the first and second handles and is threaded to them. The screw adjuster is fixedly connected to the screw and positioned between the first and second handles. The screw has opposite thread directions at both ends of the screw adjuster. The first clamping assembly has a bolting mechanism at the connection between the chuck and the handle. Through the light hole, the clamping assembly has a threaded hole for the bolt to pass through at the connection between the chuck two and the handle two. The initial position of the bottom surface of the bolt head is spaced apart from the light hole. The end face of the chuck one has a recessed step one near the chuck two. Step one is recessed near the chuck two and step two is recessed. Step three is recessed in the middle of step two. The chuck two has steps four, five and six that are completely symmetrical to steps one, two and three. The side walls of steps one and four, steps two and five, and steps three and six respectively form clamping surfaces for clamping silver sheets.

[0008] The clamping component one and clamping component two refer to clamping component one made of bakelite board and clamping component two made of bakelite board.

[0009] The screw adjuster is a cylindrical roller with an anti-slip knurled pattern on its outer surface.

[0010] The ratio of the diameter of the screw to the diameter of the screw adjuster is 1:(3-8).

[0011] The ratio of the axial length of the first clamp to the first grip is 1:(3-5), and the ratio of the axial length of the second clamp to the second grip is the same as the ratio of the axial length of the first clamp to the first grip.

[0012] Both grip one and grip two have a large-diameter anti-slip semi-circular protrusion at their ends.

[0013] The anti-slip semi-circular protrusions at the ends of grip one and grip two have a diameter 30%-50% larger than the diameter of the grip, and the outer edge of the protrusion is connected to the grip with a rounded transition.

[0014] The edges of steps one, two, three, four, five, and six are rounded.

[0015] The side wall distance between step one and step four is 12-13mm, the side wall distance between step two and step five is 2-3mm, the length of step three, which is recessed in the middle of step two, is 12-13mm, the side wall height between step one and step four is 2-3mm, the side wall height between step two and step five is 9-10mm, and the side wall height between step three and step six is ​​4-8mm.

[0016] The first clamp and the first grip are integrally formed, and the connection is a curved transition section with a diameter that decreases from large to small. The second clamp and the second grip are integrally formed, and the connection is a curved transition section with a diameter that decreases from large to small.

[0017] The beneficial effects of this utility model are mainly reflected in the following aspects:

[0018] 1. This utility model, through the setting of opposite threads and positive and negative thread screws, allows the initial opening and closing of the chuck to be achieved by rotating the screw adjuster. The screw adjuster is located between the first and second handles, allowing the operator to adjust the clamping force with one hand. The operation is convenient and the clamping force is uniform. After initial pre-tightening, due to the initial gap between the bottom surface of the bolt head and the light hole, the bolt is threadedly connected to the second clamping component and has a clearance fit with the light hole of the first clamping component. Rotating the bolt causes the bottom of the bolt head to gradually come into contact with the first clamping component and apply deformation pressure, further clamping the silver sheet between the first and second chucks. The two-stage clamping mechanism improves the stability and balance of the force, limits the movement to prevent the silver sheet from shifting, and can adapt to silver sheets of different sizes and specifications, completing the polishing of all six sides of the silver sheet. Furthermore, the main body is made of bakelite board for the first and second clamping components, giving it a certain elastic deformation capability.

[0019] 2. In this utility model, the screw adjuster is a cylindrical roller. When the operator is working with the tool, the cylindrical roller is easy to operate with the fingers and easy to apply force to rotate, which is ergonomic. The outer surface is provided with anti-slip knurled texture, which can increase the coefficient of friction, prevent slippage during operation, and improve the reliability of operation.

[0020] 3. In this utility model, the ratio of the diameter of the screw to the diameter of the screw adjuster is 1:(3-8). This specific diameter ratio makes it easier for the operator to rotate the screw adjuster, while the screw adjuster being too large would result in an overall size that is too large.

[0021] 4. In this utility model, the ratio of the length of the first chuck to the length of the first handle in the axial direction is 1:(3-5), and the ratio of the length of the second chuck to the length of the second handle in the axial direction is the same as the ratio of the length of the first chuck to the length of the first handle in the axial direction. This makes the adjustment range of the screw adjuster moderate, avoiding the situation where the clamping force is too large due to slight rotation or the clamping force does not change much due to a large rotation scale. In addition, the proportion is more suitable for hand grip, making it easier to operate.

[0022] 5. In this utility model, the edges of steps one, two, three, four, five and six are rounded, which can eliminate sharp edges, avoid scratches on the silver sheet surface from interfering with the corrosion test results, and the rounded corners make it easier for the silver sheet to slide into the step groove, reducing manual alignment time.

[0023] 6. In this utility model, the end of the handle is provided with a non-slip semi-circular protrusion, which can form a limit and prevent the hand from accidentally slipping off during operation.

[0024] 7. The present invention sets the side wall spacing and depth of steps one, two, three, four, five and six, which can be fully adapted to most sizes of silver sheets.

[0025] 8. In this utility model, the clamp head and the handle are integrally formed and have a curved transition, which can increase the bending strength of the clamp and extend its service life. Attached Figure Description

[0026] Figure 1 This is a partial cross-sectional view of the fixture structure of this utility model;

[0027] Figure 2 for Figure 1 Sectional view of AA in the middle;

[0028] Figure 3 for Figure 1 Middle BB section view;

[0029] Figure 4 This is a side view of the fixture structure of this utility model;

[0030] Figure 5 This is a front view of the silver sheet held by this utility model.

[0031] The markings in the diagram are: 1. Screw; 2. Screw adjuster; 3. Clamping assembly one; 31. Chuck one; 32. Handle one; 4. Clamping assembly two; 41. Chuck two; 42. Handle two; 5. Through hole one; 6. Through hole two; 7. Bolt; 8. Step one; 9. Step two; 10. Step three; 11. Step four; 12. Step five; 13. Step six; 14. Anti-slip semi-circular boss; 15. Silver sheet; 16. Smooth hole; 17. Threaded hole. Detailed Implementation

[0032] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] Example 1

[0034] As the most basic embodiment of this utility model, refer to Figure 1 A grinding fixture for a silver sheet corrosion test includes a screw 1, a screw adjuster 2, a clamping assembly 3, and a clamping assembly 4. The clamping assembly 3 includes a chuck 31 and a handle 32, and the clamping assembly 4 includes a chuck 41 and a handle 42. The handles 32 and 42 have through holes 5 and 6 with opposite thread directions. The screw 1 passes through the through holes in the handles 32 and 42 and is threadedly connected to them. The screw adjuster 2 is fixedly connected to the screw 1 and positioned between the handles 32 and 42. The screw 1 has opposite thread directions at both ends of the screw adjuster 2. The clamping assembly 3 has a section at the junction of the chuck 31 and the handle 32 for the passage of a bolt 7. The light hole 16 is provided in the clamping assembly 2. A threaded hole 17 for the bolt 7 to pass through is provided at the connection between the clamp 2 41 and the handle 2 42. The initial position of the bottom surface of the bolt 7 head is provided with a gap between it and the light hole 16. The end face of the clamp 1 31 is recessed with a step 1 8 on the side near the clamp 2 41. Step 1 8 is recessed with a step 2 9 on the side near the clamp 2 41. Step 2 9 is recessed with a step 3 10 in the middle. The clamp 2 41 is provided with a step 4 11, a step 5 12 and a step 6 13 that are completely symmetrical with steps 1 8, steps 2 9 and steps 3 10. The side walls of steps 1 8 and steps 4 11, the side walls of steps 2 9 and steps 5 12, and the side walls of steps 3 10 and steps 6 13 respectively form clamping surfaces for clamping the silver sheet 15.

[0035] In this embodiment, the main body adopts a clamping component 3 made of bakelite board and a clamping component 4 made of bakelite board. By setting the opposite threads and the three-level symmetrical steps, the grinding efficiency and grinding quality can be significantly improved.

[0036] Example 2

[0037] As another preferred embodiment of the present invention, this embodiment is a further supplement and explanation of embodiment 1. In this embodiment, the screw adjuster 2 is a cylindrical roller, and the outer surface is provided with anti-slip knurling.

[0038] This embodiment greatly reduces the complexity of operation and improves the reliability of fixture control.

[0039] Example 3

[0040] As another preferred embodiment of the present invention, this embodiment is a further supplement and explanation of embodiment 2. In this embodiment, the diameter ratio of the screw 1 to the diameter of the screw adjuster 2 is 1:3.

[0041] In this embodiment, the specific diameter ratio between the screw 1 and the screw adjuster 2 makes it easier for the operator to rotate the screw adjuster 2, while the screw adjuster 2 being too large results in an overall large size.

[0042] Example 4

[0043] As another preferred embodiment of the present invention, this embodiment is a further supplement and explanation of embodiment 2. In this embodiment, the ratio of the diameter of the screw 1 to the diameter of the screw adjuster 2 is 1:8; the ratio of the axial length of the first chuck 31 to the axial length of the first grip 32 is 1:3, and the ratio of the axial length of the second chuck 41 to the axial length of the second grip 42 is the same as the ratio of the axial length of the first chuck 31 to the axial length of the first grip 32.

[0044] Both the first grip 32 and the second grip 42 are provided with a large-diameter anti-slip semi-circular boss 14 at their ends; the diameter of the anti-slip semi-circular boss 14 is 30%-50% larger than the diameter of the grip, and the outer edge of the boss is connected to the grip with a rounded transition.

[0045] In this embodiment, the specific length ratio of the clamping head to the grip makes the adjustment range of the screw adjuster 2 moderate, avoiding the situation where the clamping force is too large due to slight rotation or the clamping force does not change much due to a large rotation scale. In addition, the proportion is more suitable for the palm to hold, making it easy to operate. The end is provided with a non-slip semi-circular protrusion 14, which can prevent the hand from accidentally slipping during operation and improve the stability of operation.

[0046] Example 5

[0047] As the preferred embodiment of this utility model, this embodiment provides an auxiliary grinding fixture for a silver sheet corrosion test, including a screw 1, a screw adjuster 2, a clamping assembly one 3, and a clamping assembly two 4. The clamping assembly one 3 includes a chuck one 31 and a handle one 32, and the clamping assembly two 4 includes a chuck two 41 and a handle two 42. The handle one 32 and the handle two 42 are provided with through holes one 5 and two 6 with opposite thread directions. The screw 1 passes through the through holes on the handle one 32 and the handle two 42 respectively and is threadedly connected to the handle one 32 and the handle two 42. The screw adjuster 2 is fixedly connected to the screw 1 and is disposed between the handle one 32 and the handle two 42. The thread directions of the screw 1 at both ends of the screw adjuster 2 are opposite. The clamping assembly one 3 is located at the junction of the chuck one 31 and the handle one 32. The clamping assembly 2 has a light hole 16 for the bolt 7 to pass through, and a threaded hole 17 for the bolt 7 to pass through at the connection between the clamp 2 41 and the handle 2 42. There is a gap between the initial position of the bottom surface of the bolt 7 head and the light hole 16. The end face of the clamp 1 31 has a step 8 recessed on the side near the clamp 2 41. The step 1 8 has a step 9 recessed on the side near the clamp 2 41. The middle of the step 2 9 has a step 3 10 recessed. The clamp 2 41 has a step 4 11, a step 5 12 and a step 6 13 that are completely symmetrical with the steps 1 8, 2 9 and 3 10. The side walls of the steps 1 8 and 4 11, the side walls of the steps 2 9 and 5 12, and the side walls of the steps 3 10 and 6 13 respectively form clamping surfaces for clamping the silver sheet 15.

[0048] The clamping component 3 and clamping component 4 refer to clamping component 3 and clamping component 4 made of bakelite board.

[0049] The screw adjuster 2 is a cylindrical roller with an anti-slip knurled pattern on its outer surface;

[0050] The diameter ratio of the screw 1 to the screw adjuster 2 is 1:5;

[0051] The ratio of the length of the first clamp 31 to the length of the first grip 32 in the axial direction is 1:5, and the ratio of the length of the second clamp 41 to the length of the second grip 42 in the axial direction is the same as the ratio of the length of the first clamp 31 to the length of the first grip 32 in the axial direction.

[0052] The screw adjuster 2 is provided with a clamping force indicator scale on its side;

[0053] The edges of steps 1 (8), 2 (9), 3 (10), 4 (11), 5 (12), and 6 (13) are rounded.

[0054] Both the first grip 32 and the second grip 42 are provided with a large-diameter anti-slip semi-circular protrusion 14 at their ends.

[0055] The side wall distance between step 1 8 and step 4 11 is 13mm, the side wall distance between step 2 9 and step 5 12 is 3mm, and the length of step 3 10, which is recessed in the middle of step 2 9, is 13mm.

[0056] The sidewall height of step 18 and step 41 is 3mm, the sidewall height of step 29 and step 512 is 10mm, and the sidewall height of step 310 and step 613 is 8mm.

[0057] The first clamp 31 and the first grip 32 are integrally formed, and the connection is a curved transition section with a diameter decreasing from large to small. The second clamp 41 and the second grip 42 are integrally formed, and the connection is a curved transition section with a diameter decreasing from large to small.

[0058] In this embodiment, the edges of the steps are rounded to avoid scratches on the surface of the silver sheet and to facilitate the silver sheet sliding into the step slot, reducing manual alignment time. The side wall spacing and depth settings of steps 1 (8), 2 (9), 3 (10), 4 (11), 5 (12), and 6 (13) enable the fixture to fully adapt to the size of the experimental silver sheet. Furthermore, the clamp head and handle 1 (32) are integrally formed with a curved transition, which increases the bending strength of the fixture and extends its service life.

[0059] The principle of this utility model is as follows:

[0060] Depending on the specific polishing surface of the silver sheet to be polished, place the silver sheet 5 onto step 1 8 and step 4 11, step 2 9 and step 5 12, or step 3 10 and step 6 13 to complete the positioning of the silver sheet. Due to the reverse threads of handle 1 32 and handle 2 42 and the opposite thread direction of the screw 1 at both ends of the screw adjuster 2, the handle 1 32 and handle 2 42 can move closer or further away simultaneously during rotation. After the silver sheet is positioned, hold the handle and rotate the screw adjuster 2 with your fingers to adjust the screw adjuster 2 to the appropriate position, so that handle 1 and handle 2 move inward synchronously, thereby controlling the chuck 1 31 and chuck 2 42. 1. Initial clamping: The stepped sidewalls apply uniform pressure to the silver sheet, ensuring that the clamping force is sufficient to pre-tighten the silver sheet 5 while preventing excessive clamping force from causing deformation. After pre-tightening, the bolt 7 is rotated to gradually bring the bottom of the bolt head into contact with the clamping assembly 3 and apply deformation pressure, further clamping the silver sheet 15 between the chuck 31 and the chuck 41. After clamping the silver sheet 5, the handle is used to polish the silver sheet. After polishing one side, the bolt is rotated in the opposite direction and the screw is adjusted to remove the silver sheet. The other side is then polished. The above operation is repeated until all six sides of the silver sheet 5 are polished, thus conducting a corrosion experiment.

Claims

1. An auxiliary grinding fixture for silver sheet corrosion testing, characterized in that: The assembly includes a screw (1), a screw adjuster (2), a clamping assembly one (3), and a clamping assembly two (4). The clamping assembly one (3) includes a chuck one (31) and a handle one (32). The clamping assembly two (4) includes a chuck two (41) and a handle two (42). The handle one (32) and the handle two (42) are provided with through holes one (5) and two (6) with opposite thread directions. The screw (1) passes through the handle one (32) and the handle two (42) respectively. The through hole on the second grip (42) is threadedly connected to the first grip (32) and the second grip (42). The screw adjuster (2) is fixedly connected to the screw (1) and is located between the first grip (32) and the second grip (42). The screw (1) has opposite thread directions at both ends of the screw adjuster (2). The clamping assembly (3) has a light hole (16) for the bolt (7) to pass through at the connection between the chuck (31) and the first grip (32). The clamping assembly 2 (4) has a threaded hole (17) for the bolt (7) to pass through at the connection between the clamp 2 (41) and the handle 2 (42). There is a gap between the initial position of the bottom surface of the bolt (7) head and the light hole. The end face of the clamp 1 (31) has a recessed step 1 (8) on the side near the clamp 2 (41). The step 1 (8) has a recessed step 2 (9) on the side near the clamp 2 (41). The middle recess is provided with step three (10), and the clamp two (41) is provided with step four (11), step five (12) and step six (13) which are completely symmetrical with step one (8), step two (9) and step three (10); the side walls of step one (8) and step four (11), the side walls of step two (9) and step five (12), and the side walls of step three (10) and step six (13) respectively form clamping surfaces for clamping silver sheet (15).

2. The auxiliary grinding fixture for silver sheet corrosion testing according to claim 1, characterized in that: The clamping component one and clamping component two refer to clamping component one made of bakelite board and clamping component two made of bakelite board.

3. The auxiliary grinding fixture for silver sheet corrosion testing according to claim 2, characterized in that: The screw adjuster (2) is a cylindrical roller with an anti-slip knurled pattern on its outer surface.

4. The auxiliary grinding fixture for silver sheet corrosion testing according to claim 3, characterized in that: The diameter ratio of the screw (1) to the diameter of the screw adjuster (2) is 1:(3-8).

5. The auxiliary grinding fixture for silver sheet corrosion testing according to claim 4, characterized in that: The ratio of the length of the first clamp (31) to the length of the first grip (32) in the axial direction is 1:(3-5), and the ratio of the length of the second clamp (41) to the length of the second grip (42) in the axial direction is the same as the ratio of the length of the first clamp (31) to the length of the first grip (32) in the axial direction.

6. The auxiliary grinding fixture for silver sheet corrosion testing according to claim 5, characterized in that: Both the first grip (32) and the second grip (42) are provided with a large-diameter anti-slip semi-circular boss (14) at their ends.

7. The auxiliary grinding fixture for silver sheet corrosion testing according to claim 6, characterized in that: The anti-slip semi-circular bosses (14) at the ends of grip one (32) and grip two (42) have a diameter 30%-50% larger than the diameter of the grip, and the outer edge of the bosses is connected to the grip with a rounded transition.

8. An auxiliary grinding fixture for silver sheet corrosion testing according to any one of claims 1-7, characterized in that: The edges of steps one (8), two (9), three (10), four (11), five (12) and six (13) are rounded.

9. The auxiliary grinding fixture for silver sheet corrosion testing according to claim 8, characterized in that: The side wall distance between step one (8) and step four (11) is 12-13mm, the side wall distance between step two (9) and step five (12) is 2-3mm, the length of step three (10) which is recessed in the middle of step two (9) is 12-13mm, the side wall height between step one (8) and step four (11) is 2-3mm, the side wall height between step two (9) and step five (12) is 9-10mm, and the side wall height between step three (10) and step six (13) is 4-8mm.

10. The auxiliary grinding fixture for silver sheet corrosion testing according to claim 9, characterized in that: The first clamp (31) and the first grip (32) are integrally formed, and the connection is a curved transition section with a diameter decreasing from large to small. The second clamp (41) and the second grip (42) are integrally formed, and the connection is a curved transition section with a diameter decreasing from large to small.

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