CN203858167U - Grinding wheel surface hardness detection device - Google Patents

Abstract

A grinding wheel surface hardness detection device, the technical solution is that it includes a base, a rotary table, a loading mechanism, an adjustment mechanism, and a grating displacement sensor, the rotary table is supported by the base, and the loading mechanism is supported by a loading mechanism support plate on the rotary table Above, the loading mechanism includes a sliding seat, a loading support frame, a torque motor, a spindle screw pair, a load cell and a diamond indenter. The torque motor is fixed on the upper part of the sliding seat through the torque motor seat, and the loading support frame is fixed on the lower part of the sliding seat. The motor drive is connected to the spindle screw pair, the spindle screw pair is connected to the load cell through the connecting plate, and the lower end of the load cell is fixedly connected to the diamond indenter; the grating displacement sensor is fixed on the loading support frame. The utility model can automatically control the whole process of testing the hardness of the grinding wheel, realize automatic and high-efficiency testing, avoid the influence of human factors on the testing results, and ensure the stability and accuracy of the testing results.

Description

A grinding wheel surface hardness testing device

technical field

The utility model relates to a hardness detection device, in particular to a detection device for detecting the surface hardness of a grinding wheel.

Background technique

In the process of modern mechanical processing and manufacturing, the requirements for dimensional accuracy and surface roughness of parts are getting higher and higher, and most high-precision parts are processed by grinding machines, which requires the quality of grinding wheels as grinding tools to pass the standard, and the measurement of grinding wheels An important indicator of quality is its hardness. For this reason, people also pay more and more attention to the detection of grinding wheel hardness. At present, the detection of grinding wheel hardness can be roughly divided into two categories: one is manual detection method, and the other is mechanical detection method. The advantage of the manual detection method is that it is easy to operate, not limited by environmental conditions, the tools used are simple and easy to make, and the corresponding cost is very low. However, the measurement accuracy of this method is low, there is no quantitative data, and the measurement results are controlled by human factors. Only experienced testing personnel can accurately measure the hardness level of the grinding wheel, and it is not suitable for batch testing, and the efficiency is low. . Compared with manual inspection, mechanical inspection method is more widely used. Among them, the application of the Rockwell hardness method has attracted more and more attention. Ordinary Rockwell hardness machines are manual and need to be tested by manual operation. The operation is complicated and the precision is low. In the process of manual operation and detection, there will inevitably be errors in reading and operation, and its detection efficiency is not suitable for assembly line detection.

Utility model content

The purpose of the utility model is to provide a grinding wheel surface hardness detection device with accurate detection results and high detection efficiency.

Problem described in the utility model is realized by following technical scheme:

A grinding wheel surface hardness detection device, in particular: it includes a base, a rotary table, a loading mechanism, an adjustment mechanism, and a grating displacement sensor, the rotary table is supported by the base, and the loading mechanism is supported by a loading mechanism support plate Above the rotary table, the loading mechanism includes a sliding seat, a loading support frame, a torque motor, a spindle screw pair, a load cell and a diamond indenter. The torque motor is fixed on the upper part of the sliding seat through a torque motor base, and the loading support The frame is fixed on the lower part of the sliding seat, the torque motor is connected to the spindle screw pair, the spindle screw pair is connected to the load cell through the connecting plate, and the lower end of the load cell is fixedly connected to the diamond indenter; the grating displacement sensor is fixed on the loading support frame.

In the above-mentioned grinding wheel surface hardness testing device, the rotary table includes a stepping motor, a gear transmission pair and a stage, and the stepping motor is connected to the stage through a gear transmission pair.

In the above grinding wheel surface hardness detection device, the adjustment mechanism includes a support box, a loading mechanism support plate, a vertical adjustment assembly, and a horizontal adjustment assembly, the support box is fixed on the base, and the vertical adjustment assembly includes a vertical adjustment screw 1. Vertical adjustment nut and vertical light rod, the two ends of the vertical adjustment screw are respectively connected to the top of the support box and the base in rotation, the upper end of the vertical adjustment screw is provided with a hand wheel, and the two ends of the vertical light rod are respectively connected to the support box The top is fixedly connected to the base, the vertical adjustment lead screw and the vertical adjustment screw nut are threaded, and the support plate of the loading mechanism is fixedly connected to the vertical adjustment screw nut and is slidably matched with the vertical light rod.

In the above-mentioned grinding wheel surface hardness detection device, the horizontal adjustment assembly includes a motor, a horizontal lead screw, and a horizontal light rod. The motor is fixed on the supporting plate of the loading mechanism, and the motor is connected to the horizontal lead screw. One end of the horizontal light rod is connected to the The supporting plate of the loading mechanism is fixed, and the sliding seat is threadedly matched with the horizontal lead screw and slidably matched with the horizontal feed rod.

The above-mentioned grinding wheel surface hardness detection device, the device is also provided with a control mechanism, the control structure is provided with a single-chip microcomputer, the single-chip microcomputer is connected with the torque motor, stepper motor and motor circuit, and the single-chip computer is connected with the load cell and the grating displacement sensor circuit.

The utility model designs a grinding wheel surface hardness detection device aiming at solving the problem of fast and accurate detection of the grinding wheel. The device includes a base, a rotary table, a loading mechanism, a grating displacement sensor and a control mechanism. When testing the hardness of the grinding wheel, the tested grinding wheel is located on the rotary table, the diamond indenter of the loading mechanism loads the tested grinding wheel, and the single-chip microcomputer of the control mechanism controls the loading or unloading of the loading mechanism through the loading signal fed back by the load cell. The displacement value of the indentation depth collected by the grating displacement detection mechanism is used to calculate the surface hardness of the grinding wheel. The utility model can automatically control and operate the whole process of testing the hardness of the grinding wheel, realizes automatic and high-efficiency testing, can avoid the influence of human factors on the testing results, and ensures the stability and accuracy of the testing results.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is a perspective view of the utility model;

Fig. 2 is a schematic structural view (sectional view) of Fig. 1;

Fig. 3 is the structural representation of rotary table;

Fig. 4 is a structural schematic diagram of the loading mechanism.

The list of labels in the figure is: 1. hand wheel, 2. support box, 3. motor, 4. support plate of loading mechanism, 5. vertical light bar, 6. base, 7. rotary table, 7-1. Inlet motor, 7-2, gear transmission pair, 7-3, stage, 8, grating displacement sensor, 9, horizontal lead screw, 10, loading support frame, 11, horizontal feed rod, 12, sliding seat, 13, Torque motor seat, 14, torque motor, 15, vertical adjustment nut, 16, vertical adjustment screw, 17, diamond pressure head, 18, load cell, 19, connecting plate, 20, spindle screw pair, 21 , Light bar seat. the

Detailed ways

Referring to Fig. 1-3, the utility model comprises a base 6, a rotary table 7, a loading mechanism, and an adjustment mechanism. Wherein, the rotary table is supported by the base, and the rotary table is used to place the tested grinding wheel. When measuring the grinding wheel, select three different points on the surface of the grinding wheel, measure the three different points of the grinding wheel respectively, and take the average as the hardness detection value of the grinding wheel. The rotary table 7 is designed for measuring different points of the grinding wheel . The rotary table 7 includes a stepping motor 7-1, a gear transmission pair 7-2 and an object stage 7-3. The stepping motor is connected to the object stage through a gear transmission pair, and the stepping motor is driven by the gear transmission pair during work. The stage and the grinding wheel rotate.

Referring to Fig. 1, Fig. 2 and Fig. 4, the loading mechanism is an important part of testing the hardness of the grinding wheel, and the loading mechanism is supported by the loading mechanism support plate 4 above the rotary table. The loading mechanism includes a sliding seat 12 , a loading support frame 10 , a torque motor 14 , a spindle screw pair 20 , a load cell 18 and a diamond indenter 17 . The torque motor is fixed on the upper part of the sliding seat 12 through the torque motor seat 13, and the loading support frame is fixed on the lower part of the sliding seat. The torque motor is used as the driving element to drive and connect the spindle screw pair, the spindle screw pair is connected to the load cell through the connecting plate 19, the lower end of the load cell is fixedly connected to the diamond indenter 17, and the connecting plate is slidingly matched with the loading support frame 10. The torque motor is used as the driving element to prevent damage to the equipment due to stalling. The spindle screw pair converts the rotational motion of the torque motor into a lifting and loading motion, and drives the diamond indenter to convert the displacement into a loading force on the testing grinding wheel. The load cell is used as a force feedback element, and the fed-back loading force is transmitted to the single-chip microcomputer of the control mechanism through signal processing, and the single-chip microcomputer controls the loading or unloading of the torque motor according to the feedback value. The grating displacement sensor is fixed on the loading support frame, and the grating displacement sensor collects the measured displacement value of the indentation depth, so as to calculate the surface hardness of the grinding wheel.

Still referring to Fig. 1, Fig. 2 and Fig. 4, the adjustment mechanism includes a support box 2, a loading mechanism support plate 4, a vertical adjustment assembly and a horizontal adjustment assembly, and the adjustment mechanism is used to adjust the height position and the front and rear position of the loading mechanism relative to the stage . The support box 2 is fixed on the base 6, and the vertical adjustment assembly includes a vertical adjustment screw 16, a vertical adjustment screw nut 15 and a vertical light rod 5, and the two ends of the vertical adjustment screw are respectively connected to the top of the support box and the base in rotation , the upper end of the vertical adjustment lead screw is provided with a handwheel 1, the two ends of the vertical light rod are fixedly connected with the top and the base of the support box respectively, the vertical adjustment lead screw and the vertical adjustment screw nut are threaded, and the support plate of the loading mechanism is fixedly connected to the vertical Straighten the nut and slide it with the vertical light rod. Rotate the hand wheel 1 to move up and down through the vertical adjustment lead screw and the vertical adjustment screw nut to drive the loading mechanism support plate 4 to adapt to the detection of grinding wheels of different thicknesses.

Still referring to Fig. 1, Fig. 2 and Fig. 4, the horizontal adjustment assembly includes a motor 3, a horizontal lead screw 9, and a horizontal light rod 11. The motor 3 is fixed on the supporting plate of the loading mechanism, and the motor is connected to the horizontal lead screw through transmission. One end is fixed with the loading mechanism support plate 4 through the light rod seat 21, and the sliding seat 12 passes through the horizontal lead screw and the horizontal light rod, and is screwed with the horizontal lead screw, and slidably matched with the horizontal light rod. Start the motor, the motor drives the horizontal lead screw to rotate, and the sliding seat can move back and forth to adapt to the detection of grinding wheels with different diameters.

The utility model is also provided with a control mechanism, and the control mechanism is provided with an MCS-51 series 8031 single-chip microcomputer as a main control part, and external expansion is performed. The single chip microcomputer is connected with the torque motor, the stepping motor and the motor circuit, the weighing sensor and the grating displacement sensor circuit.

Claims (5)

1. A grinding wheel surface hardness detection device, characterized in that: it comprises a base (6), a rotary table (7), a loading mechanism, an adjustment mechanism, a grating displacement sensor (8), and the rotary table is supported by the base, The loading mechanism is supported above the rotary table by the loading mechanism support plate (4), and the loading mechanism includes a slide seat (12), a loading support frame (10), a torque motor (14), and a spindle screw pair (20) , a load cell (18) and a diamond indenter (17), the torque motor is fixed on the upper part of the sliding seat through the torque motor seat (13), the loading support frame is fixed on the lower part of the sliding seat, and the torque motor is connected to the spindle screw pair, The spindle screw pair is connected to the load cell through the connecting plate (19), and the lower end of the load cell is fixedly connected to the diamond indenter; the grating displacement sensor is fixed on the loading support frame. 2. The grinding wheel surface hardness detection device according to claim 1, characterized in that, the rotary table (7) includes a stepping motor (7-1), a gear transmission pair (7-2) and a stage ( 7-3), the stepper motor is connected to the stage through the gear transmission pair. 3. The grinding wheel surface hardness detection device according to claim 2, characterized in that, the adjustment mechanism includes a support box (2), a loading mechanism support plate (4), a vertical adjustment assembly, a horizontal adjustment assembly, and the support The box is fixed on the base, and the vertical adjustment assembly includes a vertical adjustment screw (16), a vertical adjustment screw nut (15) and a vertical light rod (5), and the two ends of the vertical adjustment screw are connected with the support box The top and the base are rotationally connected, the upper end of the vertical adjustment screw is provided with a hand wheel (1), the two ends of the vertical light rod are respectively fixedly connected with the top of the support box and the base, the vertical adjustment screw and the vertical adjustment screw nut are threaded, The supporting plate of the loading mechanism is fixedly connected with the vertical adjustment nut and is slidably matched with the vertical light rod. 4. The grinding wheel surface hardness testing device according to claim 3, characterized in that, the horizontal adjustment assembly includes a motor (3), a horizontal lead screw (9), and a horizontal light rod (11), and the motor is fixed on the support of the loading mechanism On the board, the motor is connected with the horizontal lead screw, one end of the horizontal light rod is fixed with the support plate (4) of the loading mechanism through the light rod seat (21), and the sliding seat is threaded with the horizontal lead screw and slidably matched with the horizontal light rod . 5. grinding wheel surface hardness detection device according to claim 4, is characterized in that, described device is also provided with control mechanism, and control structure is provided with single-chip microcomputer, and single-chip microcomputer is connected with torque motor, stepping motor and motor circuit, and single-chip microcomputer is connected with scale Heavy sensor, grating displacement sensor line connection.