CN205014972U - Sensor mounting adjustment device - Google Patents

Abstract

The utility model relates to a sensor installation and adjustment device. The device includes a base and a sensor fixing seat arranged above the base. At least three heights for adjusting the level of the sensor fixing seat arranged at intervals around the circumference are arranged between the base and the sensor fixing seat. As for the adjustment part, the sensor fixing seat is provided with a sensor fixing structure for fixing the sensor, and the sensor fixing seat is provided with a horizontal alignment mechanism for cooperating with the leveling reference device at the center to display the horizontal state of the sensor. The device of the utility model can realize the level adjustment of the sensor flexibly, efficiently and accurately, thereby improving the installation accuracy of the sensor position and ensuring the measurement accuracy of the roundness error and the rotation error.

Description

Sensor installation adjustment device

technical field

The utility model belongs to the technical field of rotary error separation of rotary shafts, in particular to a sensor installation and adjustment device.

Background technique

Roundness error is one of the important indicators to measure the shape accuracy of cylindrical parts. The size of the roundness error of parts seriously affects the working performance and motion performance of parts, and affects the overall performance of mechanical equipment. When measuring the roundness error of parts and the rotation accuracy of the rotary axis of the machine tool on site, error separation technologies such as the three-point method in the time domain and the three-point method in the frequency domain are often used to realize the separation of the axis rotation error and the roundness error of the part. Eccentric characteristics, and has a high test accuracy. Since the three-point roundness error separation technology requires the installation positions of the three measurement sensors to be very accurate, the test accuracy depends on the installation accuracy of the sensors, the accuracy of the sensors, and the parameter selection of the test system. During on-site installation, it is often encountered Many difficulties, such as the structural constraints of mechanical equipment, limited installation space, etc., affect the accuracy and efficiency of sensor installation, which in turn affects the accuracy of testing, limiting the application of error separation technology and the measurement accuracy of part roundness error and rotation axis rotation error improvement.

Since the installation position and angular positioning of the sensor have a great influence on the measurement accuracy of the roundness error separation, and the installation and adjustment time will affect the test efficiency, it is urgent to design a device for adjusting the installation position of the sensor.

Utility model content

The utility model provides a sensor installation and adjustment device, which aims to solve the level adjustment problem of the sensor adopted in the three-point roundness error separation technology, thereby improving the measurement accuracy of the roundness error of parts and the rotation error of the rotating shaft.

In order to solve the above technical problems, the sensor installation adjustment device of the present invention includes a base and a sensor fixing seat arranged above the base, and at least three sensor fixing seats arranged at intervals around the circumference are arranged between the base and the sensor fixing seat As for the horizontal height adjustment part, the sensor fixing seat is provided with a sensor fixing structure for fixing the sensor, and the sensor fixing seat is provided with a horizontal alignment mechanism for cooperating with the leveling reference device at the center to display the horizontal state of the sensor.

The sensor holder includes a front mounting plate and a rear mounting plate arranged at intervals in the front and back, and the horizontal alignment mechanism includes a target positioning hole arranged on the front mounting plate and a target reticle arranged on the rear mounting plate, and the target positioning hole The connection line with the target reticle is arranged parallel to the sensor.

The sensor fixing structure is a V-shaped groove with the same structure respectively arranged on the top of the front and rear mounting plates, and the connecting line between the centers of the two V-shaped grooves is parallel to the connecting line between the target positioning hole and the target marking line.

The sensor fixing base includes a mounting partition, and the height adjustment component includes bolts that pass through the mounting holes on the mounting partition and screw into the threaded holes of the base. The bolts are located between the mounting partition and the base. The sleeve is provided with a spring.

The base includes a rotary translation stage.

The base also includes a three-dimensional displacement platform, and the rotary displacement platform is installed on the three-dimensional displacement platform.

The sensor fixing base includes an installation cover for covering the sensor, and the installation cover is fixed with the sensor fixing base by screws.

The sensor installation adjustment device of the present utility model is provided with at least three height adjustment parts for adjusting the level of the sensor fixing seat arranged at intervals around the circumference between the base and the sensor fixing seat. It is used to cooperate with the leveling reference device at the central position to cooperate with the horizontal alignment mechanism to display the horizontal state of the sensor. By adjusting the pitch and height of the sensor mounting base, the sensor mounting base is in a horizontal state. The device of the present invention can The level adjustment of the sensor can be realized flexibly, efficiently and accurately, so as to improve the installation accuracy of the sensor position and ensure the measurement accuracy of roundness error and rotation error.

The utility model can realize the continuous adjustment of the height by adopting the bolt as the height adjustment component, so as to realize the horizontal installation of the sensor more accurately and efficiently.

The utility model can realize the coarse adjustment of the position of the sensor by setting the rotary displacement platform and the three-dimensional displacement platform, so as to quickly realize the accurate installation of the sensor position.

Description of drawings

Fig. 1 Schematic diagram of measuring part roundness error by three-point method error separation technology;

Figure 2 Schematic diagram of sensor installation and adjustment device;

Figure 3 is a schematic diagram of the installation and adjustment of the roundness error measurement sensor.

detailed description

The technical solution of the utility model will be described in detail below in conjunction with the accompanying drawings.

The principle of three-point method error separation technology is shown in Figure 1. The three sensors P0, P1, and P2 are installed at different positions on the circumference of the workpiece, and the angles between the three sensors are α and β respectively. It is required that the installation axes of the three sensors intersect at the center of the circle O, which is also the origin and origin of the coordinate system XOY. Rotate the center of the table. When measuring, the sensor is fixed, and the workpiece to be measured is driven by the rotary table to make a rotary motion. According to the output equation of the measurement results and the error separation equation of the three-point method, the roundness error of the workpiece and the rotation error of the rotary axis can be separated by using appropriate parameter configurations.

It can be seen that the three-point method error separation technology has high requirements on the installation position of the sensor. In order to ensure that the installation position of the sensor can be coplanar on the radial plane of the measured workpiece, that is, to ensure that the sensor can be installed horizontally, the following provides An embodiment of the sensor installation and adjustment device. The sensor installation and adjustment device in this embodiment is actually a centering device, which is used in conjunction with the leveling reference device, as shown in FIG. 3 .

The sensor installation adjustment device includes a base and a sensor fixing seat arranged above the base. There are at least three height adjustment components arranged at intervals around the circumference for adjusting the level of the sensor fixing seat between the base and the sensor fixing seat. A sensor fixing structure for fixing the sensor is provided, and the sensor fixing base is provided with a horizontal alignment mechanism for cooperating with the leveling reference device at the center to display the horizontal state of the sensor.

The sensor holder in this embodiment includes a front mounting plate and a rear mounting plate arranged at intervals in the front and back, and the horizontal alignment mechanism includes target positioning holes 2-7 arranged on the front mounting plate and target marking lines arranged on the rear mounting plate 2-11, the line connecting the target positioning hole 2-7 and the target marking line 2-11 is arranged parallel to the sensor 2-8. By adjusting the height adjustment part of the sensor installation adjustment device, the laser beam passes through the target positioning hole and falls on the target marking line, so as to realize the leveling of the sensor.

As other implementations, the horizontal alignment mechanism may include a laser installed parallel to the sensor, and a front mounting plate and a rear mounting plate that are spaced apart from each other are set on the leveling reference device at the center, and a target is set on the front mounting plate Positioning hole, set the target marking line on the rear mounting plate, make the connection line between the target positioning hole and the target marking line in a horizontal state, adjust the height adjustment part of the sensor installation adjustment device, so that the beam emitted by the laser passes through the target positioning hole and falls on the Target reticle to achieve sensor leveling.

As shown in Figure 2, in the present embodiment, four height adjustment parts are preferably arranged between the base and the sensor holder, and an installation partition 2-5 is arranged on the sensor holder, through the threaded hole at the bottom of the sensor holder, Fix the installation partition to the sensor fixing base with screws, and form a whole with the installation partition. This height adjusting part comprises bolt 2-3 and spring 2-2, and after one end of bolt 2-3 passes through the installation hole 2-4 on the installation partition 2-5, puts on spring 2-2, inserts base 2-1 again. in the threaded hole on the Use the 4 bolts 2-3 on the installation partition 2-5 to adjust the position of the target positioning hole 2-7 on the horizontal alignment mechanism, so that the laser beam can pass through the target positioning hole 2-7 and irradiate the target reticle 2- At the intersection point of 11, the centering adjustment of the sensor axis and the laser emission light is completed.

Of course, as other implementations, the height adjustment component can be a pin-type height adjustment component, which includes a pin shaft and a positioning pin. The pin shaft is provided with a plurality of pin shaft holes, and one end of the pin shaft is fixedly connected to the base. One end passes through the installation hole on the installation partition and is fixed by the positioning pin so that the installation partition will not slide down. When the installation position of the sensor needs to be adjusted, it is only necessary to adjust the insertion position of the positioning pin.

The tops of the front and rear mounting plates on the sensor holder 2-6 fix and install the sensor by setting V-shaped grooves with the same structure, and ensure that the center line of the two V-shaped grooves is aligned with the target positioning hole and the target marking line through processing accuracy. The connecting lines are parallel to ensure that the axis of the sensor can intersect with the center of gyration of the rotary table.

As other embodiments, other ways can also be used to fix the sensor, such as a flange structure, as long as the sensor is parallel to the line connecting the target positioning hole and the target marking line after the sensor 2-8 is fixed.

In order to facilitate the adjustment of the rotation direction of the sensor, the base of the device can be set as a rotary displacement platform; in order to roughly adjust the installation position of the sensor, the rotary displacement platform is installed on the three-dimensional displacement platform, as shown in Figure 3, the three-dimensional displacement platform includes The X displacement stage 2-12, the Y displacement stage 2-13 and the Z displacement stage 2-14 are combined into a position adjustment workbench, which is fixed on the measuring work platform through a magnetic base.

In this embodiment, an installation cover plate 2-9 is also included on the sensor fixing seat. After the sensor is placed on the sensor fixing seat, the installation cover plate 2-9 is covered on the sensor, and the sensor is connected with the fastening screw 2-10. The holders 2-6 are fixed together.

Claims (7)

1. The sensor installation adjustment device is characterized in that it includes a base and a sensor fixing seat arranged above the base, and at least three circumferentially spaced heights for adjusting the level of the sensor fixing seat are arranged between the base and the sensor fixing seat As for the adjustment part, the sensor fixing seat is provided with a sensor fixing structure for fixing the sensor, and the sensor fixing seat is provided with a horizontal alignment mechanism for cooperating with the leveling reference device at the center to display the horizontal state of the sensor. 2. The sensor installation and adjustment device according to claim 1, wherein the sensor fixing base includes a front mounting plate and a rear mounting plate arranged at intervals front and rear, and the horizontal alignment mechanism includes a target positioning hole arranged on the front mounting plate and the target marking line arranged on the rear mounting plate, the connecting line between the target positioning hole and the target marking line is arranged parallel to the sensor. 3. The sensor installation adjustment device according to claim 1, wherein the sensor fixing structure is a V-shaped groove that is respectively arranged on the top of the front and rear mounting plates and has the same structure, and the connecting line between the centers of the two V-shaped grooves and the The connecting line between the target positioning hole and the target reticle is parallel. 4. The sensor installation and adjustment device according to claim 1, characterized in that, the sensor fixing seat includes a mounting partition, and the height adjustment component includes a mounting hole that passes through the mounting partition in sequence and is screwed into the base thread. Bolts in the holes, the bolts are covered with springs at the part between the installation partition plate and the base. 5. The sensor installation and adjustment device according to claim 1, wherein the base comprises a rotary displacement platform. 6 . The sensor installation and adjustment device according to claim 5 , wherein the base comprises a three-dimensional displacement platform, and the rotary displacement platform is installed on the three-dimensional displacement platform. 7. The sensor installation and adjustment device according to any one of claims 1-6, characterized in that the device includes an installation cover for covering the sensor, and the installation cover is fixed together with the sensor fixing base by screws.