A jig for grinding test pieces

Abstract

This utility model discloses a jig for grinding test pieces, relating to the field of metal sheet grinding devices. Its features include a clamping body and a quick-release screw mounted on the clamping body. The clamping body is composed of a first L-shaped plate, a second L-shaped plate, and a hinge, which cooperate to form an opening at the bottom for clamping the test piece. One end of the quick-release screw passes through the first L-shaped plate and the second L-shaped plate and is threaded with a nut; the other end has an eccentric handle. This utility model has a simple structure and is easy to manufacture. The quick-release screw on the clamping body allows for quick clamping and disassembly of the test piece, avoiding direct contact between the hand and the standard metal test piece. This significantly reduces friction and wear on the hand, facilitates long-term operation, improves the efficiency of test piece grinding, reduces labor intensity, improves grinding quality, and ensures the accuracy of rust-preventive grease corrosion resistance testing.

Description

Technical Field

[0001] This utility model relates to the field of metal sheet grinding devices, specifically to a jig for grinding test pieces. Background Technology

[0002] When conducting damp heat tests on rust-preventive greases, the surface of a No. 10 steel sheet (3.0~5.0mm×80mm×60mm) needs to be sanded on sandpaper according to the SHT0218-1993 standard "Preparation Method of Test Pieces for Rust-Preventive Greases". Since the test piece is only 3.0~5.0mm thick, directly holding the test piece with your fingers may cause your fingers to come into contact with the sandpaper during the sanding process, resulting in finger abrasions. Moreover, because the test piece is too thin, it is difficult to apply force when directly holding the test piece with your fingers, which often results in unreliable holding. This leads to low sanding efficiency and increased labor intensity. In addition, during actual sanding operations, the sanded surface is contaminated by hand sweat. Utility Model Content

[0003] The purpose of this invention is to provide a grinding fixture for test pieces, which aims to solve the problems of low grinding efficiency and high labor intensity in the above-mentioned background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a jig for grinding test pieces, comprising a jig body and a quick-release screw disposed on the jig body. The jig body is composed of a first L-shaped plate, a second L-shaped plate, and a hinge, and the three cooperate to form an opening at the bottom for holding the test piece. The first L-shaped plate includes a first horizontal plate and a first vertical plate fixedly connected, and the second L-shaped plate includes a second horizontal plate and a second vertical plate fixedly connected. The hinge includes a first blade and a second blade. The first horizontal plate and the second horizontal plate are arranged parallel to each other and have corresponding through holes. The first blade is disposed on the lower surface of the first horizontal plate, and the second blade is disposed on the outer side of the second vertical plate. The lower edge of the first vertical plate and the lower edge of the second blade are at the same level. One end of the quick-release screw passes through the through holes on the first horizontal plate and the second horizontal plate in sequence and is threaded with a nut, and the other end is provided with an eccentric handle.

[0005] Furthermore, the other end of the quick-release screw is provided with a transverse through hole, and the center of the end of the eccentric handle is provided with a slot for the other end of the quick-release screw to be inserted, and the end is provided with a through hole with a transverse through slot. After the other end of the quick-release screw is inserted into the slot inside the eccentric handle, the through holes of the two are concentric and are hinged to each other by a pin.

[0006] Furthermore, the outer diameter of the quick-release screw is smaller than the inner diameter of the through holes on the first and second horizontal plates.

[0007] Furthermore, it also includes a limiting baffle provided on the first vertical plate, the lower edge of which is at the same level as the lower edge of the second vertical plate.

[0008] This utility model has the following beneficial effects:

[0009] This utility model provides a jig for grinding test pieces. It has a simple structure and is easy to manufacture. The quick-release screw on the jig body can quickly clamp and remove the test piece, avoiding direct contact between the hand and the standard metal test piece. This can greatly reduce friction and wear on the hand, facilitate long-term operation, improve the efficiency of test piece grinding, reduce labor intensity, improve grinding quality, and ensure the accuracy of the anti-corrosion performance test of rust-preventive grease. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the hinge structure in this utility model;

[0012] Figure 3 This is a side view of the first L-shaped plate in this utility model.

[0013] Figure 4 This is a side view of the second L-shaped plate in this utility model.

[0014] In the diagram: 1. First L-shaped plate; 2. Second L-shaped plate; 3. Hinge; 4. Quick-release screw; 5. Nut; 6. Eccentric handle; 7. Pin; 8. Limiting stop. Detailed Implementation

[0015] like Figures 1 to 4 As shown, a jig for grinding test pieces includes a jig body and a quick-release screw 4 disposed on the jig body. The jig body is composed of a first L-shaped plate 1, a second L-shaped plate 2, and a hinge 3, and the three cooperate to form an opening at the bottom for holding the test piece. The first L-shaped plate 1 includes a first horizontal plate and a first vertical plate fixedly connected. The second L-shaped plate 2 includes a second horizontal plate and a second vertical plate fixedly connected. The hinge 3 includes a first blade and a second blade. The first horizontal plate and the second horizontal plate are arranged parallel to each other and have corresponding through holes. The first blade is disposed on the lower surface of the first horizontal plate, and the second blade is disposed on the outer side of the second vertical plate. The lower edge of the first vertical plate and the lower edge of the second blade are at the same level. One end of the quick-release screw 4 passes through the through holes on the first horizontal plate and the second horizontal plate in sequence and is threadedly connected to a nut 5. The other end is provided with an eccentric handle 6.

[0016] Specifically, the first horizontal board has dimensions of 69mm×60mm×1.2mm, the first vertical board has dimensions of 41mm×60mm×1.2mm, the second horizontal board has dimensions of 60mm×60mm×1.2mm, and the second vertical board has dimensions of 60mm×15mm×1.2mm.

[0017] The other end of the quick-release screw 4 has a transverse through hole. The center of the end of the eccentric handle 6 has a slot for inserting the other end of the quick-release screw 4 and a through hole for the transverse through slot. After the other end of the quick-release screw 4 is inserted into the slot inside the eccentric handle 6, the through holes of the two are concentric and are hinged to each other by a pin 7. Since the handle 6 is an eccentric cam structure, when the handle 6 is in the vertical state, the cam eccentric distance is small and the device is in the open state. When the handle rotates around the pin 7 and is in the transverse state, the cam eccentric distance is large and the device is in the clamping state, ensuring that the handle 6 can be locked during rotation.

[0018] The outer diameter of the quick-release screw 4 is smaller than the inner diameter of the through holes on the first and second horizontal plates.

[0019] It also includes a limiting baffle 8 provided on the first vertical plate. The lower edge of the limiting baffle 8 is at the same level as the lower edge of the second vertical plate, so that the opening has a slot for clamping the test piece on the left and right, and the slot depth is 1.5mm.

[0020] The specific operation process of this utility model is as follows:

[0021] During the test piece grinding operation, place the test piece with the grinding side facing down on a flat surface, and fasten the clamp onto the test piece, so that the two sides of the test piece are clamped inside the slot. Rotate around the pin 7 as the center, so that the eccentric handle 6 is moved from the vertical position to the horizontal position, so that the test piece is fixed and pressed, and the test piece is ground. After grinding is completed, turn the eccentric handle 6 to flip the test piece to be ground and fix it again, so as to complete the grinding of the other side of the test piece.

Claims

1. A wafer polishing jig characterized by comprising: The clamping device includes a clamping body and a quick-release screw (4) on the clamping body. The clamping body is composed of a first L-shaped plate (1), a second L-shaped plate (2), and a hinge (3), and the three work together to form an opening at the bottom for clamping the test piece. The first L-shaped plate (1) includes a first horizontal plate and a first vertical plate that are fixedly connected. The second L-shaped plate (2) includes a second horizontal plate and a second vertical plate that are fixedly connected. The hinge (3) includes a first blade and a second blade. The first horizontal plate and the second horizontal plate are arranged parallel to each other and have corresponding through holes. The first blade is located on the lower surface of the first horizontal plate, and the second blade is located on the outside of the second vertical plate. The lower edge of the first vertical plate and the lower edge of the second blade are at the same level. One end of the quick-release screw (4) passes through the through holes on the first horizontal plate and the second horizontal plate in sequence and is threaded with a nut (5). The other end is provided with an eccentric handle (6).

2. A wafer polishing jig according to claim 1, wherein The quick-release screw (4) has a transverse through hole at the other end. The eccentric handle (6) has a slot at the center of the end for inserting the other end of the quick-release screw (4) and a through hole at the end for inserting the transverse through slot. After the other end of the quick-release screw (4) is inserted into the slot inside the eccentric handle (6), the through holes of the two are concentric and are hinged to each other by a pin (7).

3. The wafer polishing chuck of claim 1 wherein, The outer diameter of the quick-release screw (4) is smaller than the inner diameter of the through holes on the first and second horizontal plates.

4. The wafer polishing chuck of claim 1 wherein, It also includes a limiting baffle (8) provided on the first vertical plate, the lower edge of which is at the same level as the lower edge of the second vertical plate.

Images