Full-automatic measurement and calibration device for Brinell hardness blocks

Abstract

The utility model discloses a Brinell hardness block full-automatic metering and calibrating device, which comprises a tool used for fixing a first driving unit, a second driving unit and an image acquisition module and supporting a force value loading tool; the image acquisition module is used for acquiring the measured image of the calibrated hardness block to obtain the indentation diameter; the supporting force value loading tool is used for fixing a pressure head so as to apply downward pressure on the hardness block to be calibrated to the surface of the hardness block to be calibrated; the first driving unit is used for driving the supporting force value loading tool to generate downward force; the force sensor is used for collecting downward force generated by the first driving unit; and the second driving unit is used for pushing the measured hardness block to be calibrated to the position below the industrial camera. According to the device, full-automatic metering calibration of the Brinell hardness block can be realized, and automatic acquisition and processing of measured data are realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of measurement calibration equipment, especially a full -automatic measurement calibration device of brinell hardness block. BACKGROUND

[0002] Brinell hardness test is the most common test, especially in the mechanical manufacturing, metallurgy and other industries and fields, the accuracy of hardness value directly influences the production quality of product, also influences material consumable cost and product production efficiency. The calibration steps of standard brinell hardness block are that the indenter with the diameter D is pressed into the surface of hardness block under the action of certain test force F with certain speed, removes test force after the specified test force holding time, leaves the indentation with the diameter d, the indentation diameter is measured manually using universal tool microscope, then the average pressure on the spherical surface of sample indentation is used to represent the brinell hardness value of metal. At present, brinell hardness block calibration mainly uses static weight type standard brinell hardness tester and universal tool microscope to obtain hardness measurement point and diameter measurement respectively. The calibration mode needs to load weight and manually measure indentation diameter according to different hardness values of the hardness block to be calibrated, and the operation steps are more cumbersome, the manual error is big, and the measurement work efficiency is low, therefore, a new type of brinell hardness block measurement calibration device needs to be designed to calibrate brinell hardness block. SUMMARY

[0003] The utility model aims at providing a full -automatic measurement calibration device of brinell hardness block to realize full -automatic measurement calibration of brinell hardness block and realize the automatic acquisition and processing of measurement data.

[0004] The technical solution for realizing the utility model comprises:

[0005] A full -automatic measurement calibration device of brinell hardness block comprises:

[0006] Tool is used for fixing first drive unit, second drive unit and image acquisition module and supporting force value loading tooling;

[0007] Image acquisition module is used for collecting the image of the hardness block to be calibrated of completed measurement to obtain indentation diameter;

[0008] Supporting force value loading tooling is used for fixing indenter to exert downward pressure on the surface of the hardness block to be calibrated;

[0009] First drive unit is used for driving supporting force value loading tooling to generate downward force;

[0010] Force sensor is used for collecting the downward force generated by first drive unit;

[0011] Second drive unit is used for pushing the hardness block to be calibrated of completed measurement to the lower side of industrial camera.

[0012] Compared with the prior art, the utility model has the following remarkable advantages:

[0013] The full-automatic metering and calibrating device for Brinell hardness blocks can realize full-automatic metering and calibration of Brinell hardness blocks and automatic acquisition and processing of measurement data. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a measurement structure schematic view of the full-automatic metering and calibrating device for Brinell hardness blocks.

[0015] Figure 2 It is an installation schematic view of the Brinell hardness block to be calibrated arranged below the pressure head.

[0016] Figure 3 It is a schematic view of the Brinell hardness block to be calibrated pushed by the telescopic unit.

[0017] Figure 4 It is a schematic view of the Brinell hardness block to be calibrated pushed by the telescopic unit. DETAILED DESCRIPTION

[0018] The utility model will be further introduced below in combination with the drawings and specific embodiments.

[0019] In combination with Figures 1-4 , the full-automatic metering and calibrating device for Brinell hardness blocks of the embodiment comprises an industrial camera lens 1, an industrial camera 2, a camera fixing frame 3, a support frame 4, an industrial camera data line 5, a tool 6, a servo motor 7, a servo motor rotating shaft 8, a commutator 9, a servo motor data line 10, a transmission shaft 11, a force sensor 12, a force sensor data line 13, a force value loading tool 14, a pressure head 15, a flexible baffle 16, a telescopic rod 17, a pneumatic cylinder (or an electric cylinder is used as the telescopic unit) 18, a pneumatic cylinder data line 19 and a computer 20.

[0020] The industrial camera lens 1 is connected with the industrial camera 2; the industrial camera 2 is connected with the camera fixing frame 3; the industrial camera 2 is connected with the industrial camera data line 5; the camera fixing frame 3 is connected with the support frame 4; the support frame 4 is fixed on the tooling 6; the servo motor is fixed on the tooling 6, the servo motor rotating shaft 8 is connected with the servo motor 7, and the servo motor rotating shaft 8 is arranged transversely; the servo motor 7 is connected with the servo motor data line 10; the servo motor rotating shaft 8 is connected with the transmission shaft 11 through the commutator 9, and the commutator 9 converts the transverse rotation of the servo motor rotating shaft 8 into the longitudinal rotation of the transmission shaft 11; the transmission shaft 11 is connected with the force sensor 12; the force sensor 12 is connected with the force sensor data line 13; the transmission shaft 11 is connected with the force value loading tooling 14; the force value loading tooling 14 passes through the commutator 9. The force value loading tooling 14 is fixed with the pressure head 15; the flexible baffle 16 is connected with the telescopic rod 17; the telescopic rod 17 is connected with the pneumatic cylinder 18, and the pneumatic cylinder 18 is fixed on the tooling 6; the pneumatic cylinder 18 is connected with the pneumatic cylinder data line 19; the pneumatic cylinder data line 19 is connected with the computer 20; the industrial camera data line 5 is connected with the computer 20; the force sensor data line 13 is connected with the computer 20; the servo motor data line 10 is connected with the computer 20. The computer 20 is used for controlling the rotation of the servo motor 7 and the telescoping of the pneumatic cylinder 18, collecting the data of the force sensor 12 and the images shot by the industrial camera 2. The commutator adopts a right-angle commutator.

[0021] In use, as Figure 2As shown, first, the hardness block 21 to be calibrated is placed on the surface of the jig 6 under the pressure head 15 in a slightly non-contact state, the industrial camera 2 is connected to the computer 20 through the industrial camera data line 5, the servo motor 7 is connected to the computer 20 through the servo motor data line 10, the force sensor 12 is connected to the computer 20 through the force sensor data line 13, and the pneumatic cylinder 18 is connected to the computer 20 through the pneumatic cylinder data line 19, and then the calibration of the Brinell hardness block is started. The required force value i (which can correspond to the hardness value x to be calibrated) is input into the computer 20; then the system automatically controls the servo motor 7 to rotate forward, drives the force value loading jig 14 and the pressure head 15 to generate a downward pulling force through the servo motor rotating shaft 8, the commutator 9, the transmission shaft 11, and the force sensor 12 (the commutator 9 drives the force sensor 12 to twist and generate a small axial movement to generate a pulling and pressing force), and applies the pulling force to the surface of the hardness block 21 to be calibrated; when the measured value of the force sensor 12 reaches i, the servo motor 7 stops rotating and remains for 10 s; then the system automatically controls the servo motor 7 to rotate reversely, drives the force value loading jig 14 and the pressure head 15 to generate an upward force, and when the measured value of the force sensor 12 reaches 0 (the pressure head 15 and the hardness block 21 to be calibrated are in a slightly separated state), the servo motor 7 stops rotating and remains. Then, the system automatically controls the extension rod 17 in the pneumatic cylinder 18 to extend (the extension length is a constant d), and at this time, the flexible baffle 16 in the extension rod 17 pushes the hardness block 21 to be calibrated to move to the position under the industrial camera lens 1 along the surface of the jig 6, as shown. Figure 3 Then, the system takes a photo of the hardness block 21 to be calibrated through the industrial camera 2 and the industrial camera lens 1, transmits the image to the computer 20 for image processing, and at the same time, the extension rod 17 extends and retracts to the original state, as shown. Figure 4 The computer 20 measures the indentation diameter according to the image, automatically calculates the hardness value y according to the existing hardness calculation formula, and completes the calibration of the hardness value by calculating the hardness difference between the standard hardness value x and the calibrated hardness value y, and measures and calibrates all calibration points of the Brinell hardness block in the same way.

Claims

1. A full-automatic metering calibration device for Brinell hardness block, characterized in that, The application relates to a device for measuring the hardness of a hardness block, which comprises the following parts: a tool for fixing a first driving unit, a second driving unit and an image acquisition module and supporting a force value loading tool; the image acquisition module is used for acquiring the image of the measured hardness block to obtain the indentation diameter; the supporting force value loading tool is used for fixing a pressure head to apply a downward pressure to the surface of the hardness block; the first driving unit is used for driving the supporting force value loading tool to generate a downward force; a force sensor is used for acquiring the downward force generated by the first driving unit; the second driving unit is used for pushing the measured hardness block to the position below the industrial camera.

2. The full-automatic Brinell hardness block metering and calibrating device according to claim 1, characterized in that, The device further comprises a computer which is used for controlling the movement of the first driving unit and the second driving unit, controlling the rotation of the first driving unit according to the force acquired by the force sensor and obtaining the image acquired by the image acquisition module.

3. The full-automatic Brinell hardness block metering and calibrating device according to claim 1, characterized in that, The first driving unit comprises a servo motor, a servo motor rotating shaft, a commutator and a transmission shaft; the servo motor is fixed on the tool, the servo motor rotating shaft is connected with the servo motor, and the servo motor rotating shaft is arranged transversely; the servo motor rotating shaft is connected with the transmission shaft through the commutator, and the commutator converts the transverse rotation of the servo motor rotating shaft into the longitudinal rotation of the transmission shaft.

4. The full-automatic Brinell hardness block metering and calibrating device according to claim 1, characterized in that, The second driving unit comprises a telescopic unit, a telescopic rod and a flexible baffle; the flexible baffle is connected with the telescopic rod; the telescopic rod is connected with a pneumatic cylinder, and the pneumatic cylinder is fixed on the tool.

5. The full-automatic Brinell hardness block metering and calibrating device according to claim 4, characterized in that, The telescopic unit adopts a pneumatic cylinder or an electric cylinder.

6. The full-automatic Brinell hardness block metering calibration device according to claim 1, characterized in that, The image acquisition module comprises a supporting frame and an industrial camera; the supporting frame is fixed on the tool, and the industrial camera is connected with the supporting frame.

Images