A cast hardness detection device

Abstract

The utility model provides a kind of casting hardness detection device, including the operation box body of upper surface opening, first telescopic cylinder is embedded in the left and right side surface of operation box body, the telescopic rod end of first telescopic cylinder is provided with clamping plate, the upper surface of operation box body is provided with portal frame, the transverse plate middle part of portal frame is provided with second telescopic cylinder, the telescopic rod end of second telescopic cylinder is provided with lifting seat, first slot is set in the lower surface left and right ends of lifting seat, the middle part of the lower surface of lifting seat is provided with first detection piece, first motor is provided in the first slot, the output of first motor is connected with first screw rod, first screw rod is spirally provided with first moving block, the lower surface of first moving block is provided with second detection piece;The utility model can realize casting hardness detection, realize multi-point positioning detection and enhance detection stability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing testing technology, and in particular to a casting hardness testing device. Background Technology

[0002] As fundamental components in the machinery manufacturing industry, the hardness of castings directly affects the product's service life and reliability. During the casting process, factors such as material composition and cooling rate can lead to significant differences in hardness across different parts of the casting. Traditional manual inspection methods have many limitations: operators need to repeatedly adjust the casting's position to ensure the inspection point aligns with the indenter, a process that is not only time-consuming and labor-intensive but also makes it difficult to guarantee consistent positioning accuracy for each inspection. For large or irregularly shaped castings, multiple operators are often required, increasing labor costs and posing safety hazards related to mechanical injury.

[0003] While existing automated inspection equipment has alleviated the burden on manual labor to some extent, it still has significant shortcomings in practical applications. Most equipment uses fixed inspection fixtures, which can only perform single-point inspections on specific locations on the casting. When different planes or areas need to be inspected, the machine must be stopped to change fixtures or reprogrammed, severely impacting inspection efficiency. In addition, conventional equipment lacks intelligent multi-point positioning capabilities and cannot automatically adjust the inspection position according to the shape of the casting, making it difficult to meet the needs of modern casting production lines for rapid and flexible inspection.

[0004] The stability of the testing process is also a significant concern. Traditional clamping methods are prone to slight displacement during hardness tester impact. While this displacement is difficult to detect with the naked eye, it can lead to deviations in the test data. This is especially true when testing the edge areas of castings, where uneven clamping force distribution can easily result in unstable test results. These issues directly impact the quality control effectiveness of hardness testing. Summary of the Invention

[0005] In view of this, the purpose of this utility model is to provide a casting hardness testing device that can realize casting hardness testing, achieve multi-point positioning testing, and enhance testing stability.

[0006] This utility model is implemented using the following method: a casting hardness testing device, comprising an operating box with an open upper surface, wherein a first telescopic cylinder is embedded on both the left and right sides of the operating box, and a clamping plate is provided at the end of the telescopic rod of the first telescopic cylinder; a gantry frame is provided on the upper surface of the operating box, and a second telescopic cylinder is provided in the middle of the cross plate of the gantry frame; a lifting seat is provided at the end of the telescopic rod of the second telescopic cylinder; a first strip-shaped groove is provided at both the left and right ends of the lower surface of the lifting seat; a first detection element is provided in the middle of the lower surface of the lifting seat; a first motor is provided in the first strip-shaped groove; a first screw is connected to the output end of the first motor; a first moving block is spirally sleeved on the first screw; and a second detection element is provided on the lower surface of the first moving block.

[0007] Furthermore, the first and second testing components have the same structure. The first testing component includes a support base, which is located at the center of the lower surface of the lifting base and is perpendicular to the lifting base. A second strip-shaped groove is formed on the lower surface of the support base. A second motor is provided on the front surface of the support base. A second screw is connected to the output end of the second motor. The second screw is located in the second strip-shaped groove. A second moving block is spirally sleeved on the second screw. A third motor is embedded in the lower surface of the second moving block. A turntable is provided at the end of the output shaft of the third motor. A U-shaped block is provided on the lower surface of the turntable. A swing block is hinged to the U-shaped block via a rotating shaft. A fourth motor for driving the swing block to swing back and forth is provided on the side of the U-shaped block. A hardness tester is provided on the lower surface of the swing block.

[0008] The beneficial effects of this utility model are as follows: This utility model achieves automatic clamping, multi-point positioning detection, and dynamic adjustment of the detection angle of castings through the coordinated action of the operating box, clamping plate, lifting seat, and movable detection component. It solves the problems of low efficiency, poor positioning accuracy, and insufficient stability of traditional detection methods, and has the advantages of improving detection efficiency, realizing multi-point positioning detection, and enhancing detection stability. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 This is the front view of the present invention. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Please see Figure 1 and Figure 2As shown, this utility model provides an embodiment: a casting hardness testing device, including an operating box 1 with an open upper surface. First telescopic cylinders 11 are embedded on both the left and right sides of the operating box 1. A clamping plate 12 is provided at the end of the telescopic rod of the first telescopic cylinder 11. A gantry frame 2 is provided on the upper surface of the operating box 1. A second telescopic cylinder 21 is provided in the middle of the horizontal plate of the gantry frame 2. A lifting seat 22 is provided at the end of the telescopic rod of the second telescopic cylinder 21. First strip-shaped grooves 23 are provided at both the left and right ends of the lower surface of the lifting seat 22. A first detection element 3 is provided in the middle of the lower surface of the lifting seat 22. A first motor 24 is provided inside the first strip-shaped groove 23. A first screw 25 is connected to the output end of the first motor 24. A first moving block 26 is spirally sleeved on the first screw 25. A second detection element 4 is provided on the lower surface of the first moving block 26.

[0013] The operating housing refers to the rigid container that carries the testing components. It can be implemented using a welded steel structure housing, and its open design facilitates the loading and unloading of castings. The first telescopic cylinder is the power element that provides horizontal clamping force. It can be implemented using a double-acting cylinder, controlling the clamping distance through synchronous telescopic movement. The clamping plate is the positioning component that contacts the casting. It can be implemented using an aluminum alloy plate with anti-slip texture to increase the friction coefficient and prevent displacement. The gantry frame is the supporting structure spanning above the housing. It can be implemented using a welded H-beam frame, providing the installation foundation for the lifting mechanism. The second telescopic cylinder is the power element that drives the vertical movement of the testing components. It can be implemented using a stroke-adjustable cylinder to precisely control the depth of the testing head's downward pressure. The first groove is the guide structure that accommodates the transmission components. It can be implemented using a linear guide rail combined with a ball-bearing slider to ensure smooth sliding of the moving block. The first motor is the power source that drives the lateral movement. It can be implemented using a stepper motor, precisely adjusting the testing point position by controlling the number of pulses.

[0014] Specifically, during operation, the casting is placed inside the chamber, and the telescopic cylinders on both sides extend synchronously to fix the casting in place with clamping plates. The telescopic cylinders on the gantry drive the lifting seat downwards, bringing the testing piece closer to the casting surface. The motor in the first groove drives the screw to rotate, causing the moving block to move laterally along the groove, allowing the two testing pieces to test different areas of the casting separately. By adjusting the height of the lifting seat and the position of the moving block, multi-plane, multi-angle hardness testing coverage can be achieved.

[0015] Compared to existing technologies, this solution achieves rapid fixing of castings through a bidirectional clamping mechanism, avoiding time-consuming manual adjustments. A laterally movable detection component replaces a single detection head, enabling multi-point detection in a single clamping operation. The coordinated control of the lifting and moving mechanisms allows the detection head to be precisely aligned with complex curved surfaces. Compared to traditional fixed detection equipment, this device significantly improves detection efficiency and positional adaptability.

[0016] Through the above technical solutions, this application achieves automated clamping and positioning of castings, reducing the intensity of manual intervention; expands the detection coverage through adjustable detection components, solving the problem of repeated clamping required for multi-point detection; utilizes a rigid support structure to ensure the stability of the detection process and improve the reliability of measurement data; and reduces operational safety hazards through an overall enclosed design.

[0017] Please continue reading. Figure 1 and Figure 2 As shown, in one embodiment of this utility model, the first detection element 3 and the second detection element 4 have the same structure. The first detection element 3 includes a support base 31. The support base 31 is disposed in the middle of the lower surface of the lifting base 22, and the support base 31 is perpendicular to the lifting base 22. A second strip groove 32 is opened on the lower surface of the support base 31. A second motor 33 is disposed on the front surface of the support base 31. A second screw 34 is connected to the output end of the second motor 33. The second screw 34 is disposed in the second strip groove 32. A second moving block 35 is spirally sleeved on the second screw 34. A third motor (not shown) is embedded in the lower surface of the second moving block 35. A turntable 36 is disposed at the end of the output shaft of the third motor. A U-shaped block 37 is disposed on the lower surface of the turntable 36. A swing block 38 is hinged in the U-shaped block 37 via a rotating shaft. A fourth motor 39 for driving the swing block 38 to swing back and forth is disposed on the side of the U-shaped block 37. A hardness tester 30 is disposed on the lower surface of the swing block 38.

[0018] The system comprises the following components: The support base is a vertical mounting base for fixing the detection components. It can be implemented by connecting a rectangular metal block to a lifting seat with bolts. Its vertical orientation ensures the detection direction remains orthogonal to the casting surface. The second groove is a guide structure extending along the length of the support base. It can be milled to form a linear slide rail groove, providing a linear motion path for the second moving block. The second motor is the power device that drives the screw rotation. It can be implemented by a stepper motor and reducer, achieving precise positioning of the moving block through control pulse signals. The second moving block is a load-bearing component that slides along the second groove. It can be implemented by an aluminum alloy slider with a copper nut. Its embedded third motor can drive the turntable for circumferential angle adjustment. The U-shaped block is a connector with a double-sided support structure. It can be formed by bending steel plates, and its internal shaft allows the swing block to adjust its pitch angle. The fourth motor is the actuator that drives the swing block to swing. It can be implemented by a micro servo motor and a worm gear mechanism, achieving precise control of the swing angle through closed-loop control.

[0019] Specifically, the support base establishes a testing reference plane through vertical installation. The second groove serves as a guide channel for the moving block. When the second motor drives the second screw to rotate, the second moving block translates along the length of the groove. The third motor drives the turntable to rotate, adjusting the circumferential testing angle of the hardness tester. The fourth motor drives the oscillating block to adjust its pitch angle around the axis via a worm gear, allowing the hardness tester indenter to adapt to the normal direction of different curved surfaces of the casting. When different areas of the casting need to be tested, the second moving block moves laterally along the support base to change the testing position. When encountering an inclined surface, the combined angle adjustment of the turntable and the oscillating block ensures that the indenter always maintains perpendicular contact with the surface being tested.

[0020] Compared to existing technologies, traditional manual operation requires repeated adjustments to the casting posture and inspection position. This solution, however, achieves automated adjustment of the inspection position and angle through the lateral displacement of the second moving block, the circumferential rotation of the turntable, and the pitch adjustment of the swing block. Existing equipment requires stopping to change fixtures when inspecting complex curved surfaces, while this solution, through a multi-degree-of-freedom adjustment mechanism, can directly achieve adaptive positioning of different curved surfaces, significantly shortening tooling changeover time.

[0021] Through the above technical solution, this application achieves multi-point automatic detection at any location on the surface of the casting. By coordinating the motor-driven moving block with the angle adjustment mechanism, the problems of low efficiency and large angle deviation in manual positioning are solved. The hardness tester indenter can automatically align with different planar and curved surface areas, avoiding contact angle errors that may be caused by manual operation, and ensuring the accuracy and repeatability of the test data. During the testing process, the operator does not need to contact the moving parts, eliminating the risk of mechanical injury.

[0022] The motor, telescopic cylinder, and hardness tester in this utility model are all existing technologies, which are already clearly understood by those skilled in the art, and will not be described in detail here. The hardness tester shown can be a TH300A Leeb hardness tester, but is not limited to this.

[0023] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A casting hardness testing device, characterized in that: The device includes an open-top operating box. First telescopic cylinders are embedded on both the left and right sides of the operating box. Clamping plates are provided at the ends of the telescopic rods of the first telescopic cylinders. A gantry frame is provided on the upper surface of the operating box. A second telescopic cylinder is located in the middle of the cross plate of the gantry frame. A lifting seat is located at the end of the telescopic rod of the second telescopic cylinder. First strip-shaped grooves are provided at both ends of the lower surface of the lifting seat. A first detection element is provided in the middle of the lower surface of the lifting seat. A first motor is installed within the first strip-shaped groove. A first screw is connected to the output end of the first motor. A first moving block is spirally sleeved on the first screw. A second detection element is provided on the lower surface of the first moving block.

2. The casting hardness testing device according to claim 1, characterized in that: The first and second testing components have the same structure. The first testing component includes a support base. The support base is located in the middle of the lower surface of the lifting base and is perpendicular to the lifting base. A second strip-shaped groove is formed on the lower surface of the support base. A second motor is provided on the front surface of the support base. A second screw is connected to the output end of the second motor. The second screw is located in the second strip-shaped groove. A second moving block is spirally sleeved on the second screw. A third motor is embedded in the lower surface of the second moving block. A turntable is provided at the end of the output shaft of the third motor. A U-shaped block is provided on the lower surface of the turntable. A swing block is hinged to the U-shaped block via a rotating shaft. A fourth motor for driving the swing block to swing back and forth is provided on the side of the U-shaped block. A hardness tester is provided on the lower surface of the swing block.

Images