Hardness test fixture capable of conveniently clamping irregular sample
The hardness testing fixture addresses the challenge of clamping irregular samples by using a base, columns, and a wedge block system for stable fixation, enhancing test accuracy and efficiency.
Patent Information
- Application Number
- CN202420047583.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-09
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-01-09
AI Technical Summary
Existing hardness testing equipment struggles to accurately and efficiently clamp irregular samples, particularly larger ones, due to the difficulty in achieving parallel sample placement and the instability of pads or gaskets during testing.
A hardness testing fixture comprising a base, columns, clamping plates, clamping bolts, and a wedge block, which allows for adjustable clamping and stable fixation of irregular samples using inclined wedge surfaces and sliding fits, ensuring accurate and efficient testing.
The fixture provides stable and reliable clamping of irregular samples, improving test accuracy and efficiency by ensuring sample stability and reducing setup time.
Smart Images
Figure CN222232182U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a hardness testing fixture which can conveniently clamp irregular samples and belongs to the technical field of metal material performance testing equipment. Background Art
[0002] Hardness refers to the ability of a material to locally resist a hard object from pressing into its surface. It is one of the important performance indicators of metal materials. Commonly used hardness testing equipment include Rockwell hardness tester, Brinell hardness tester and Vickers hardness tester.
[0003] It is stipulated in the national standard hardness test method that during the hardness test, the sample should be firmly placed on the test bench without displacement, and the sample surface should be parallel to the test bench. In actual production applications, the sample is often intercepted according to actual needs. It is difficult to make the sample surface parallel during the sample preparation process, which affects the test effect. At present, when testing irregular samples, especially larger irregular samples, it is necessary to place multiple pads or gaskets of different shapes to fix the samples. However, these pads or gaskets are troublesome to adjust when fixing irregular samples, which is time-consuming. At the same time, the pads and gaskets are easy to shift during the test, and an accurate test structure cannot be obtained. Therefore, it is very necessary to design a fixture that can clamp irregular samples conveniently and quickly to improve the efficiency and accuracy of the test. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a hardness testing fixture for conveniently clamping irregular samples. The fixture can clamp the samples conveniently and quickly, meet the stability requirements of the samples during the hardness test, and ensure that the samples will not be displaced during the test to obtain accurate test results, while saving clamping time and improving work efficiency.
[0005] The technical solution to solve the above technical problems is:
[0006] The invention discloses a hardness test fixture for conveniently clamping irregular specimens, comprising a base, a column, a clamping plate, a clamping bolt and a wedge block. The base is a rectangular steel plate, and vertical columns are respectively welded at both ends of the base. The top surface of the column is provided with a downward screw hole. The clamping plate is a rectangular plate, and both ends of the two clamping plates are respectively placed on the top surface of the column. Both ends of the two clamping plates are respectively provided with fixing holes corresponding to the screw holes on the top surface of the column. The clamping bolt passes through the fixing holes of the clamping plates and the screw holes on the top surface of the column to press and connect the clamping plates. The bottom surface of the wedge block is placed on the plane of the base, and the wedge surface of the wedge block has an inclined angle with the plane of the base. The wedge block is inserted in the gap between the lower part of the irregular specimen and the base.
[0007] The above-mentioned hardness testing fixture is convenient for clamping irregular specimens. The fixing holes of the two clamping plates are long slot holes. The length direction of the long slot holes is along the length direction of the clamping plates. The width of the long slot holes matches the diameter of the clamping bolts. The rod body of the clamping bolts is in sliding fit with the long slot holes.
[0008] The above-mentioned hardness testing fixture is convenient for clamping irregular specimens. The wedge surface of the wedge block is at an angle of 13-15° with the plane of the base. A long hole is provided on the wedge surface of the wedge block, which penetrates the wedge block vertically downward. The length direction of the long hole is along the length direction of the wedge block. The width of the long hole matches the diameter of the fixing bolt. The rod body of the fixing bolt is slidably matched with the long hole. A movable groove is provided on the upper part of the long hole. The width of the movable groove matches the width of the nut of the fixing bolt. The nut of the fixing bolt is embedded in the movable groove. A fixing screw hole is provided on the plane of the base. The fixing screw hole is opposite to the long hole of the wedge block. The fixing bolt fixes the wedge block to the base through the long hole of the wedge block and the fixing screw hole of the base.
[0009] The beneficial effects of the utility model are:
[0010] The two clamping plates of the utility model can press and connect the two ends of the irregular sample with the plane of the base through the clamping bolts; the two clamping plates can be moved through the long hole grooves to adjust the clamping positions of different irregular samples; the wedge block is placed on the plane of the base to fill the gap under the irregular sample and ensure the stability of the irregular sample; the wedge block can be moved and fixed on the plane of the base through the long hole and the fixing bolts to adapt to different irregular samples.
[0011] The utility model has a simple structure and is easy to use, can meet the requirements of hardness test of irregular specimens, can clamp irregular specimens conveniently and quickly, and is stable and reliable, effectively improving the test accuracy and test work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model;
[0013] Figure 2 yes Figure 1 AA section view;
[0014] Figure 3 It is a schematic diagram of the structure of the clamping plate and the clamping bolt;
[0015] Figure 4 Figure 3 A top view of
[0016] Figure 5 It is a schematic diagram of the connection structure between the wedge block and the base.
[0017] The markings in the figure are as follows: base 1, column 2, clamping plate 3, clamping bolt 4, wedge block 5, screw hole 6, long slot hole 7, long hole 8, movable slot 9, fixing bolt 10. DETAILED DESCRIPTION
[0018] The utility model is composed of a base 1, a column 2, a clamping plate 3, a clamping bolt 4 and a wedge block 5.
[0019] Figure 1 , 2 It is shown that the base 1 is a rectangular steel plate, and vertical columns 2 are welded at both ends of the base 1, and the top surface of the column 2 has a downward screw hole 6. The clamping plate 3 is a rectangular plate, and the two ends of the two clamping plates 3 are placed on the top surface of the column 2, and the two ends of the two clamping plates 3 have fixing holes that are opposite to the screw holes 6 on the top surface of the column 2. The clamping bolts 4 pass through the fixing holes of the clamping plates 3 and the screw holes 6 on the top surface of the column 2 to press and connect the clamping plates 3.
[0020] Figure 1 , 2 It is shown that the bottom surface of the wedge block 5 is placed on the plane of the base 1, and the wedge surface of the wedge block 5 has an inclined angle with the plane of the base 1, and the angle between the wedge surface and the plane of the base 1 is 13-15°. The wedge block 5 can be inserted into the gap between the lower part of the irregular sample and the base 1 to stably fix the irregular sample.
[0021] Figure 3 , 4 It is shown that the fixing holes of the two clamping plates 3 are long slot holes 7, the length direction of the long slot holes 7 is along the length direction of the clamping plates 3, the width of the long slot holes 7 matches the diameter of the clamping bolts 4, and the rods of the clamping bolts 4 can slide in the long slot holes 7. The clamping plates 3 can move relative to the columns 2 through the long slots 7 to adjust the clamping positions of different irregular specimens.
[0022] Figure 2 , 5 It is shown that there is a long hole 8 on the wedge surface of the wedge block 5 that passes through the wedge block 5 vertically downward. The length direction of the long hole 8 is along the length direction of the wedge block 5. The width of the long hole 8 matches the diameter of the fixing bolt 10. The rod body of the fixing bolt 10 is in sliding fit with the long hole 8. There is a moving groove 9 on the upper part of the long hole 8. The width of the moving groove 9 matches the width of the nut of the fixing bolt 10. The nut of the fixing bolt 10 is embedded in the moving groove 9. There is a fixing screw hole on the plane of the base 1. The fixing screw hole is opposite to the long hole 8 of the wedge block 5. The fixing bolt 10 passes through the long hole 8 of the wedge block 5 and the fixing screw hole of the base 1 to fix the wedge block 5 to the base 1. The wedge block 5 can be moved and fixed on the plane of the base 1 through the long hole 8 and the fixing bolt 10 to adapt to different irregular specimens. The moving groove 9 can make the nut of the fixing bolt 10 located below the wedge surface of the wedge block 5.
[0023] The use process of the utility model is as follows:
[0024] First, the irregular sample is placed on the plane of the base 1, and the clamping plate 3 is moved on the top surface of the column 2 through the long hole slot 7 to adjust the clamping position of the front end of the clamping plate 3 and the irregular sample;
[0025] Then, the wedge block 5 is moved on the plane of the base 1 through the long hole 8 and the fixing bolt 10, and the tip of the wedge block 5 is inserted into the gap between the lower part of the irregular sample and the base 1, so that the irregular sample can be stably placed on the plane of the base 1 without shaking, and the fixing bolt 10 is tightened to fix the wedge block 5 to the base 1;
[0026] Finally, tighten the clamping bolts 4 on the two clamping plates 3 so that the front ends of the clamping plates 3 are pressed against the upper ends of the irregular specimen, and the rear ends of the clamping plates 3 are firmly connected to the columns 2 .
[0027] An embodiment of the present utility model is as follows:
[0028] The base 1 has a length of 90 mm, a width of 65 mm and a thickness of 15 mm;
[0029] The diameter of column 2 is 13 mm and the length is 42.8 mm;
[0030] The length of the clamping plate 3 is 30.8 mm, the width is 13.2 mm, the thickness is 2.5 mm, the width of the long slot hole 7 is 7.5 mm, and the length is 18.3 mm;
[0031] The diameter of the clamping bolt 4 is 5 mm and the length is 28 mm;
[0032] The length of the wedge block 5 is 43.5 mm, the width is 48.5 mm, the height is 10 mm, the angle between the wedge surface and the plane of the base 1 is 13°, the length of the long hole 8 is 28.5 mm, the width is 13.2 mm, and the width of the movable groove 9 is 7.5 mm;
[0033] The fixing bolt 10 has a diameter of 5 mm and a length of 15 mm.
Claims
1. A hardness test fixture for conveniently clamping irregular specimens, characterized in that: The invention comprises a base (1), a column (2), a clamping plate (3), a clamping bolt (4), and a wedge block (5). The base (1) is a rectangular steel plate. The two ends of the base (1) are respectively welded to the vertical columns (2). The top surface of the column (2) has a downward screw hole (6). The clamping plate (3) is a rectangular plate. The two ends of the two clamping plates (3) are respectively placed on the top surface of the column (2). The two ends of the two clamping plates (3) have fixing holes that are opposite to the screw holes (6) on the top surface of the column (2). The clamping bolt (4) passes through the fixing holes of the clamping plates (3) and the screw holes (6) on the top surface of the column (2) to press and connect the clamping plates (3). The bottom surface of the wedge block (5) is placed on the plane of the base (1). The wedge surface of the wedge block (5) has an inclined angle with the plane of the base (1). The wedge block (5) is inserted into the gap between the lower part of the irregular specimen and the base (1).
2. The hardness test fixture for conveniently clamping irregular specimens according to claim 1 is characterized in that: The fixing holes of the two clamping plates (3) are long slot holes (7), the length direction of the long slot holes (7) is along the length direction of the clamping plates (3), the width of the long slot holes (7) matches the diameter of the clamping bolts (4), and the rod body of the clamping bolts (4) and the long slot holes (7) are in sliding fit.
3. The hardness test fixture for conveniently clamping irregular specimens according to claim 1 is characterized in that: The wedge surface of the wedge block (5) is at an angle of 13-15° to the plane of the base (1). The wedge surface of the wedge block (5) is provided with a long hole (8) that vertically penetrates the wedge block (5) downward. The length direction of the long hole (8) is along the length direction of the wedge block (5). The width of the long hole (8) matches the diameter of the fixing bolt (10). The rod body of the fixing bolt (10) and the long hole (8) are in sliding fit. The upper part of the long hole (8) is provided with a movable groove (9). The width of the movable groove (9) matches the width of the nut of the fixing bolt (10). The nut of the fixing bolt (10) is embedded in the movable groove (9). A fixing screw hole is provided on the plane of the base (1). The fixing screw hole is opposite to the long hole of the wedge block (5). The fixing bolt (10) passes through the long hole (8) of the wedge block (5) and the fixing screw hole of the base (1) to fix the wedge block (5) and the base (1) together.