Bearing auxiliary clamping assembly for Vickers hardness tester

Abstract

The utility model relates to the field of ceramic hardness measuring equipment, in particular to a bearing auxiliary clamping assembly for a Vickers hardness tester. The bearing auxiliary clamping assembly for the Vickers hardness tester comprises a bottom plate and two sliding sheets connected to the bottom plate in a sliding mode. The upper surface of each sliding sheet is fixedly connected to a servo electric cylinder. A push rod of the servo electric cylinder is fixedly connected with an assembling frame assembly. An electric parallel clamping jaw is detachably and fixedly connected into the assembling frame assembly. And the ceramic bearing is clamped between the two electric parallel clamping jaws. The bearing auxiliary clamping assembly is assembled on the Vickers hardness tester and used for assisting in clamping the ceramic bearing and improving the Vickers hardness testing accuracy and safety of the ceramic bearing.

Description

Technical Field

[0001] This application relates to the field of ceramic hardness measuring equipment, and in particular to a bearing-assisted clamping assembly for a Vickers hardness tester. Background Technology

[0002] Ceramic bearings are made of ceramic materials such as zirconium oxide (ZrO2), silicon nitride (Si3N4), and silicon carbide (SiC). They possess resistance to extreme environments, operating stably in temperatures ranging from -200℃ to 1000℃ and under harsh conditions such as strong corrosion and radiation. They are lightweight and can operate at high speeds; the density of ceramic is only 30%-40% of that of steel, reducing centrifugal force by 40%, making them suitable for ultra-high-speed applications, with speeds up to 1.5 times that of steel bearings. They exhibit low friction and self-lubricating properties, with a friction coefficient 30% lower than metals, requiring no additional lubrication and reducing energy consumption and maintenance needs. They possess insulating and antimagnetic properties, achieving complete electrical insulation between inner and outer rings, making them suitable for precision electronic equipment and strong magnetic field environments. They also possess high hardness, with a Vickers hardness value of 1500-1650 HV10, providing excellent wear resistance and a long service life. They are widely used in CNC machine tool spindles, high-speed electric spindles, precision instruments, petrochemical equipment, nuclear reactor cooling pumps, aerospace engines, MRI equipment, food processing machinery, and other industrial fields.

[0003] The hardness of ceramic bearings needs to be measured during the production process. This is necessary for several reasons: 1. Hardness testing ensures excellent performance of ceramic bearings in practical applications, especially under high loads and harsh conditions, guaranteeing their quality and performance; 2. It helps evaluate the material quality and manufacturing process of ceramic bearings, determining whether the manufacturing quality meets standards, thus ensuring their reliability and durability in practical applications; 3. Hardness testing allows for the timely detection of material quality problems, preventing premature wear and damage, and extending the bearing's service life; 4. Hardness testing helps in selecting suitable ceramic bearing materials and manufacturing processes for specific operating conditions. Currently, the hardness of ceramic bearings is typically measured using a Vickers hardness tester. However, while existing Vickers hardness testers are relatively easy to use for measuring the Vickers hardness of the sidewall region of ceramic bearings, measuring the Vickers hardness of the peripheral region is relatively difficult. To facilitate the measurement of the Vickers hardness of the peripheral region of ceramic bearings, this application provides a bearing auxiliary clamping assembly for a Vickers hardness tester. Utility Model Content

[0004] To address the difficulty of measuring the Vickers hardness of the peripheral region of ceramic bearings using existing Vickers hardness testers, this application provides a bearing auxiliary clamping assembly for a Vickers hardness tester.

[0005] The bearing-assisted clamping assembly for a Vickers hardness tester provided in this application is achieved through the following technical solution:

[0006] A bearing-assisted clamping assembly for a Vickers hardness tester includes a base plate, two slide plates slidably connected to the base plate, and a servo electric cylinder fixedly connected to the upper surface of each slide plate; the push rod of the servo electric cylinder is fixedly connected to an assembly frame assembly; an electric parallel jaw is detachably and fixedly connected inside the assembly frame assembly; and a ceramic bearing is clamped between the two electric parallel jaws.

[0007] The bearing auxiliary clamping assembly in this application is assembled with a Vickers hardness tester to assist in clamping ceramic bearings, thereby improving the accuracy and safety of Vickers hardness testing of ceramic bearings.

[0008] Preferably, the base plate has a T-shaped groove along its length; a T-shaped slider is slidably connected in the T-shaped groove of the base plate; the upper surface of the T-shaped slider is fixedly connected to the lower surface of the slider, so that the slider can slide along the length of the base plate to adjust the clamping distance between the two electric parallel grippers.

[0009] Preferably, a gap of 0.1-1mm is reserved between the lower surface of the slider and the upper surface of the base plate; fastening bolts A are threadedly connected to the four corners of the slider.

[0010] By adopting the above technical solution, the sliding plate can be easily slid and fixed to the base plate, thereby allowing for flexible adjustment of the distance between the two electric parallel grippers to ensure the clamping stability of ceramic bearings of different diameters.

[0011] Preferably, the assembly frame component includes a mating ring post and an assembly frame connected to the mating ring post. The inner diameter of the mating ring post is equal to the outer diameter of the push rod of the servo electric cylinder. A fastening bolt B is threadedly connected to the circumference of the mating ring post. The central axis of the fastening bolt B is perpendicular to the length direction of the base plate.

[0012] Preferably, a connecting piece is fixedly connected to the circumference of the mating annular column opposite to the fastening bolt B; one end of the connecting piece is fixedly connected to the circumference of the mating annular column, and the upper surface of the other end of the connecting piece is fixedly connected to the lower surface of the assembly frame.

[0013] Preferably, fastening bolts C are threaded at all four corners of the upper surface of the assembly frame.

[0014] By adopting the above technical solution, it is easy for the electric parallel gripper to quickly assemble and fix the assembly frame component.

[0015] Preferably, the upper surface of the base plate is provided with a positioning arc-shaped groove; the positioning arc-shaped groove is filled with a rubber gasket.

[0016] By adopting the above technical solutions, the clamping efficiency of ceramic bearings can be improved.

[0017] Preferably, a silicone sleeve is fixedly connected to the gripper of the electric parallel gripper.

[0018] By fitting silicone sleeves onto the jaws of the electric parallel gripper, wear on the jaws can be prevented, the clamping accuracy and stability of the electric parallel gripper can be improved, and the accuracy of hardness measurement of ceramic bearings can be improved.

[0019] Preferably, the upper surface of the base plate is etched with a scale for calibrating the clamping distance between the two electric parallel grippers.

[0020] If the ceramic bearings have different diameters, the clamping distance between the two electric parallel jaws needs to be adjusted to ensure the clamping stability of ceramic bearings of different diameters. The scale on the upper surface of the base plate allows operators to quickly calibrate the clamping distance between the two electric parallel jaws, thereby improving the clamping efficiency of ceramic bearings.

[0021] In summary, this application has the following advantages:

[0022] 1. The bearing auxiliary clamping assembly in this application is assembled on a Vickers hardness tester to assist in clamping ceramic bearings, thereby improving the accuracy and safety of Vickers hardness testing of ceramic bearings.

[0023] 2. This application can quickly adjust the clamping distance between the two electric parallel jaws, which can ensure the clamping stability of ceramic bearings of different diameters, and thus ensure the accuracy of Vickers hardness testing of ceramic bearings of different diameters. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the bearing-assisted clamping assembly for the Vickers hardness tester in this application.

[0025] In the diagram, 1. Base plate; 10. Scale; 11. T-slot; 12. T-slider; 13. Positioning arc groove; 14. Rubber pad; 2. Sliding piece; 21. Fastening bolt A; 3. Servo electric cylinder; 4. Assembly frame assembly; 41. Matching ring column; 411. Fastening bolt B; 42. Connecting piece; 43. Assembly frame; 431. Fastening bolt C; 5. Electric parallel gripper; 51. Silicone gripper sleeve. Detailed Implementation

[0026] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Example: Refer to Figure 1A bearing-assisted clamping assembly for a Vickers hardness tester includes a base plate 1, two slide plates 2 slidably connected to the base plate 1, a servo electric cylinder 3 fixedly connected to the slide plates 2, an assembly frame assembly 4 fixedly connected to the servo electric cylinder 3, and an electric parallel gripper 5 detachably and fixedly connected to the assembly frame assembly 4. A ceramic bearing is clamped between the two electric parallel grippers 5.

[0028] Reference Figure 1 A single servo electric cylinder 3 is bolted to the upper surface of a single slider 2. The servo electric cylinder 3 can be an EMC / EAC servo electric cylinder, such as the EMC25 servo electric cylinder. The bolted connection of the servo electric cylinder 3 to the upper surface of the slider 2 facilitates quick assembly and disassembly of the servo electric cylinder 3, thereby reducing the overall maintenance difficulty of the bearing-assisted clamping assembly for the Vickers hardness tester. The push rod of the single servo electric cylinder 3 is detachably and fixedly connected to an assembly frame assembly 4. An electric parallel gripper 5 is detachably and fixedly connected within the assembly frame assembly 4, facilitating quick assembly and disassembly of the electric parallel gripper 5, further reducing the overall maintenance difficulty of the bearing-assisted clamping assembly for the Vickers hardness tester.

[0029] Reference Figure 1 The base plate 1 has a T-shaped groove 11 along its length, with the opening of the T-shaped groove 11 being the upper surface of the base plate 1. A T-shaped slider 12 is slidably connected within the T-shaped groove 11 of the base plate 1. The upper surface of the T-shaped slider 12 is 0.1-1mm higher than the upper surface of the base plate 1, meaning there is a 0.1-1.0mm gap between the lower surface of the slider 2 and the upper surface of the base plate 1. The upper surface of the T-shaped slider 12 is fixedly connected to the lower surface of the slider 2, allowing the slider 2 to slide along the length of the base plate 1 and adjust the clamping distance between the two electric parallel grippers 5. Fastening bolts A21 are threaded at each of the four corners of the slider 2, facilitating the sliding of the slider 2 and fixing it to the base plate 1. This allows for flexible adjustment of the distance between the two electric parallel grippers 5, ensuring the clamping stability of ceramic bearings of different diameters.

[0030] Reference Figure 1 The upper surface of the base plate 1 is etched with a scale 10 for calibrating the clamping distance between the two electric parallel grippers 5. The scale 10 is located below the T-slot 11. Since the diameters of the ceramic bearings are different, the clamping distance between the two electric parallel grippers 5 needs to be adjusted to ensure the clamping stability of ceramic bearings of different diameters. The scale 10 on the upper surface of the base plate 1 allows operators to quickly calibrate the clamping distance between the two electric parallel grippers 5, improving the clamping efficiency of ceramic bearings.

[0031] Reference Figure 1A positioning arc-shaped groove 13 is formed on the upper surface of the base plate 1. The positioning arc-shaped groove 13 of the base plate 1 is located above the T-shaped groove 11. The positioning arc-shaped groove 13 is filled with a rubber gasket 14. When performing Vickers hardness testing on the ceramic bearing, the ceramic bearing is first placed in the positioning arc-shaped groove 13, then the clamping distance between the two electric parallel grippers 5 is adjusted, and finally the working direction of the electric parallel grippers 5 is from the outside to the inside to stably clamp the ceramic bearing.

[0032] Reference Figure 1 The assembly frame component 4 includes a mating ring post 41, a connecting piece 42, and an assembly frame 43. The inner diameter of the mating ring post 41 is equal to the outer diameter of the push rod of the servo electric cylinder 3. A fastening bolt B411 is threaded around the circumference of the mating ring post 41, and the central axis of the fastening bolt B411 is perpendicular to the length direction of the base plate 1. During assembly, the mating ring post 41 is fitted into the push rod of the servo electric cylinder 3, and the fastening bolt B411 is rotated so that the top of the fastening bolt B411 abuts against the outer wall of the push rod of the servo electric cylinder 3, thus completing the detachable and fixed connection of the mating ring post 41 to the servo electric cylinder 3.

[0033] Reference Figure 1 A connecting piece 42 is welded to the circumference of the mating annular column 41 facing away from the fastening bolt B411. One end of the connecting piece 42 is welded to the circumference of the mating annular column 41, and the upper surface of the other end of the connecting piece 42 is fixedly connected to the lower surface of the assembly frame 43 by welding. Fastening bolts C431 are threaded at the four corners of the upper surface of the assembly frame 43. Rotating the fastening bolts C431 causes the top of the fastening bolts C431 to abut against the electric parallel gripper 5, thus completing the detachable and fixed connection of the electric parallel gripper 5 to the assembly frame assembly 4.

[0034] Reference Figure 1 A silicone claw sleeve 51 is fixedly connected to the jaws of the electric parallel gripper 5. The silicone claw sleeve 51 prevents wear on the jaws of the electric parallel gripper 5, improves its clamping accuracy and stability, and thus enhances the accuracy of hardness measurement of ceramic bearings. The electric parallel gripper 5 can be a VEGM series electric parallel gripper.

[0035] When the bearing auxiliary clamping assembly for the Vickers hardness tester in this application is installed, double-sided tape is pasted at the center of the lower surface of the base plate. The size of the double-sided tape is equal to the size of the Vickers hardness tester test bench. The bearing auxiliary clamping assembly for the Vickers hardness tester is fixed to the Vickers hardness test bench by the double-sided tape, which is suitable for measuring the Vickers hardness of small-sized ceramic bearings.

[0036] When measuring the Vickers hardness of larger ceramic bearings, a groove is made at the center of the lower surface of the base plate of the bearing auxiliary clamping assembly for the Vickers hardness tester. The Vickers hardness tester's test bench is fitted into the groove of the base plate, completing the fixed connection between the bearing auxiliary clamping assembly and the Vickers hardness tester's test bench. To handle the Vickers hardness measurement of large-mass ceramic bearings, fastening bolts are threaded onto all four sides of the base plate. One end of each fastening bolt abuts against the periphery of the Vickers hardness tester's test bench, thus ensuring a more secure connection between the bearing auxiliary clamping assembly and the test bench.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bearing-assisted clamping assembly for a Vickers hardness tester, characterized by: Includes a base plate (1), two sliding pieces (2) slidably connected to the base plate (1), and a servo electric cylinder (3) fixedly connected to the upper surface of each sliding piece (2); the push rod of the servo electric cylinder (3) is fixedly connected to an assembly frame assembly (4); an electric parallel gripper (5) is detachably and fixedly connected inside the assembly frame assembly (4); and a ceramic bearing is clamped between the two electric parallel grippers (5).

2. A bearing-assisted clamping assembly for a Vickers hardness tester according to claim 1, characterized in that: The base plate (1) has a T-shaped groove (11) along its own length direction; a T-shaped slider (12) is slidably connected in the T-shaped groove (11) of the base plate (1); the upper surface of the T-shaped slider (12) is fixedly connected to the lower surface of the slider (2), so that the slider (2) can slide along the length direction of the base plate (1) to adjust the clamping distance between the two electric parallel grippers (5).

3. A bearing-assisted clamping assembly for a Vickers hardness tester as defined in claim 2, wherein: A gap of 0.1-1mm is reserved between the lower surface of the slide (2) and the upper surface of the base plate (1); fastening bolts A (21) are threaded at the four corners of the slide (2).

4. A bearing-assisted clamping assembly for a Vickers hardness tester as defined in claim 1, wherein: The assembly frame assembly (4) includes a mating ring post (41) and an assembly frame (43) connected to the mating ring post (41). The inner diameter of the mating ring post (41) is equal to the outer diameter of the push rod of the servo electric cylinder (3). The mating ring post (41) is threaded with a fastening bolt B (411) on its circumference. The central axis of the fastening bolt B (411) is perpendicular to the length direction of the base plate (1).

5. A bearing-assisted clamping assembly for a Vickers hardness tester as defined in claim 4, wherein: The mating ring post (41) is fixedly connected to the circumference of the fastening bolt B (411) with a connecting piece (42); one end of the connecting piece (42) is fixedly connected to the circumference of the mating ring post (41), and the upper surface of the other end of the connecting piece (42) is fixedly connected to the lower surface of the assembly frame (43).

6. The bearing-assisted clamping assembly for a Vickers hardness tester according to claim 1, characterized in that: The four corners of the upper surface of the assembly frame (43) are threaded with fastening bolts C (431).

7. A bearing-assisted clamping assembly for a Vickers hardness tester as defined in claim 6, wherein: The upper surface of the base plate (1) is provided with a positioning arc groove (13); the positioning arc groove (13) is filled with a rubber gasket (14).

8. A bearing-assisted clamping assembly for a Vickers hardness tester as defined in claim 1, wherein: The electric parallel gripper (5) has a silicone gripper sleeve (51) fixedly connected to its gripper.

9. A bearing-assisted clamping assembly for a Vickers hardness tester as defined in claim 1, wherein: The upper surface of the base plate (1) is etched with a scale (10) for calibrating the clamping distance between the two electric parallel grippers (5).

Images