CN220039386U - Thin-wall cylindrical part size detection device - Google Patents

Abstract

The utility model discloses a thin-wall cylindrical part size detection device, which comprises a base mounting plate, wherein a Y-axis guide rail is arranged on the base mounting plate, an X-axis guide rail is connected to the Y-axis guide rail in a sliding manner, a movable workpiece clamping part is connected to the X-axis guide rail in a sliding manner, the movable workpiece clamping part is positioned at one end of the Y-axis guide rail, and a fixed workpiece clamping part fixedly connected with the base mounting plate is arranged at the other end of the Y-axis guide rail; the base mounting plate is also fixedly provided with a rotating device, and the rotating device is connected with an inner wall telescopic measurement structure and an outer wall telescopic measurement structure in a transmission way. The detection device can detect the data of the inner wall and the outer wall simultaneously, greatly improves the efficiency of detecting the size of the workpiece, can avoid deformation of the workpiece caused by contact measurement, and improves the detection precision.

Description

A size detection device for thin-walled cylindrical parts

Technical field

The utility model belongs to the field of accuracy detection, and specifically relates to a size detection device for thin-walled cylindrical parts.

Background technique

For thin-walled cylindrical components with large depth, the ultra-thin and long structural characteristics make them flexible and poor in stability. They are prone to instability during the long-stroke spinning process. The easy-to-deform structural characteristics reduce the forming accuracy after spinning. Difficulty in judgment. The status of the thin-walled cylinder during the spinning process is unknown, and the dimensions and forming accuracy after each pass of spinning are not fully inspected. Due to the rheological characteristics of spinning, the overall structure of the workpiece shows a certain degree of flexibility, making it easy to deform during the corresponding manufacturing and testing processes, which increases the difficulty of spin forming accuracy. Traditional contact inspection methods are no longer suitable for dimensional inspection of such workpieces.

Due to the sealing and fluidity of the thin-walled cylinder spinning process, traditional artificial touch is still the main method to determine the status of the spinning process. Corresponding characteristics and spinning conditions lead to problems such as poor spinning stability, poor forming accuracy, difficult condition monitoring, and low dimensional detection accuracy during the spinning process of thin-walled cylinders. With the development of sensor, ultrasonic, grating, laser and computer technology, the size detection of large thin-walled parts has developed from contact to non-contact. The traditional sensor rotation laser measurement method uses a set of data points obtained by rotating a point laser displacement sensor around the workpiece to be measured for calculation. The data is localized, and most of them only perform separate size detection on the inner and outer walls of the workpiece, resulting in The detection efficiency is low, and measurements at different times will be affected by possible deformation of thin-walled cylindrical components, resulting in low measurement accuracy.

Utility model content

In order to solve the above problems, the utility model discloses a size detection device for thin-walled cylindrical parts.

In order to achieve the above purpose, the technical solution of the present invention is as follows:

A size detection device for thin-walled cylindrical parts, including a base mounting plate. A Y-axis guide rail is installed on the base mounting plate. The Y-axis guide rail is slidably connected to an X-axis guide rail. The X-axis guide rail is slidably connected to a movable workpiece clamping component. The workpiece clamping component is located at one end of the Y-axis guide rail, and the other end of the Y-axis guide rail is equipped with a fixed workpiece clamping component fixedly connected to the base mounting plate; a rotating device is also fixed on the base mounting plate, and the rotating device is connected with an inner wall telescopic measurement Structure and outer wall telescopic measurement structure.

As a further improvement, both the inner wall telescopic measurement structure and the outer wall telescopic measurement structure include a screw mechanism; the screw mechanism of the inner wall telescopic measurement structure is connected to the inner wall line laser displacement sensor, and the screw mechanism of the outer wall telescopic measurement structure is connected to the outer wall line. Laser displacement sensor.

In a further improvement, the inner wall telescopic measurement structure includes an inner wall line laser sensor mounting bracket. A first screw motor is installed on the inner wall line laser sensor mounting bracket. The first screw motor is connected to a first guide rail screw, and the first guide rail screw is connected to the first screw motor. The rod is threaded to connect the inner wall line laser displacement sensor, and the inner wall line laser displacement sensor is slidingly connected to the inner wall line laser sensor mounting bracket; the outer wall telescopic measurement structure includes an outer wall line laser sensor mounting bracket, and a second wire is installed on the outer wall line laser sensor mounting bracket. The second screw motor is connected to a second guide rail screw, the second guide rail screw is threadedly connected to the outer wall line laser displacement sensor, and the outer wall line laser displacement sensor is slidingly connected to the outer wall line laser sensor installation bracket.

In a further improvement, the rotating device includes a main motor. The main motor is connected to a coupling through a reducer. The coupling is connected to a magnetic driving wheel. An angle encoder is installed in conjunction with the magnetic driving wheel. The magnetic driving wheel is drivingly connected to Magnetic driven wheel; the magnetic driving wheel is connected to the inner wall line laser sensor mounting bracket, and the magnetic driven wheel is connected to the outer wall line laser sensor mounting bracket.

In a further improvement, the movable workpiece clamping component and the fixed workpiece clamping component are respectively a first three-claw chuck and a second three-claw chuck. The first three-claw chuck is slidingly connected to the X and Y-axis guide screws below through a two-way moving plate; the annular mounting ring of the second three-claw chuck is fixedly installed on the frame through the gap between the magnetic driving wheel and the magnetic driven wheel. superior.

As a further improvement, the magnetic drive wheel is connected to the output shaft through a flat key. The magnetic driven wheel is fixedly connected to the annular guide rail slide table and rotates along the annular guide rail.

In a further improvement, a base frame is fixed below the base mounting plate, and a base tripod is fixed at the bottom of the base frame.

Advantages of this utility model:

1. Can greatly improve detection efficiency. The traditional detection device only measures the inner wall or the outer wall of thin-walled cylinders separately. The detection device of the present invention can detect data on the inner and outer walls at the same time, which greatly improves the efficiency of workpiece size detection.

2. Avoid contact measurement causing workpiece deformation. In view of the characteristics of thin-walled cylinders with high flexibility and poor stability, non-contact detection is adopted. The detection device does not have direct contact with the inner and outer walls, which avoids deformation of the workpiece due to contact, thereby making the detection data inaccurate.

3. The line laser displacement sensor is not affected by mechanical jitter errors, has higher measurement data point accuracy, and has stronger environmental anti-interference ability. The traditional sensor rotation laser measurement method uses a set of data points obtained by rotating a point laser displacement sensor around the workpiece to be measured for calculation, and the data is localized. The measurement method of the utility model is calculated based on the contour data obtained by the line laser displacement sensor.

Description of the drawings

Figure 1 is a schematic diagram of the three-dimensional structure of the utility model.

Figure 2 is a schematic structural diagram of the inner wall telescopic measurement structure and the outer wall telescopic measurement structure.

Figure 3 is a schematic structural diagram of the magnetic driving wheel and the magnetic driven wheel.

Figure 4 is a schematic diagram of the ring guide rail structure.

Figure 5 is a schematic diagram of the connection between the magnetic driven wheel and the annular guide rail.

In the picture: base tripod 1, base mounting plate 2, Y-axis guide rail 3, X-axis guide rail 4, base frame 5, Y-axis guide screw 6, Y-axis slide manual rotating handle 7, X-axis moving guide screw 8 , two-way moving plate 9, X-axis slide manual rotating handle 10, chuck support rib 11, first three-jaw chuck 12, inner wall line laser displacement sensor 13, inner wall line laser sensor mounting bracket 14, outer wall line laser displacement Sensor 15, outer wall line laser sensor mounting bracket 16, second three-jaw chuck 17, annular guide rail 18, coupling 19, reducer 20, main motor 21, angle encoder 22, magnetic transmission driven wheel 23, first guide rail Lead screw 24, second guide rail lead screw 25, first lead screw motor 26, second lead screw motor 27, magnetic transmission driving wheel 28, annular guide rail slide 29, three-jaw chuck annular mounting ring 30, and output shaft 31.

Detailed ways

The utility model will be described in more detail below in conjunction with the accompanying drawings and examples.

As shown in Figure 1, a thin-walled cylindrical part size detection device is structured to include a detection device base component, a workpiece clamping component, a data detection component, and a rotating device component. The base assembly of the detection device consists of a base tripod 1, a base mounting plate 2, a Y-axis guide rail 3, an X-axis guide rail 4, a base frame 5, etc.; the workpiece clamping assembly consists of the first, second and third jaw chucks 12, 17, and the chuck. It is composed of support rib plate 11, two-way moving plate 9, X-axis guide screw 8, Y-axis guide screw 6, etc. During the fixing process of the workpiece, one end of the workpiece is first fixed by the second three-claw chuck 17, and the other end of the workpiece is fixed by the first three-claw chuck 12 under the adjustment of the guide screws 6 and 8. The second three-claw chuck (17) is fixedly connected to the frame mounting plate through the annular mounting ring (30). The second three-claw chuck (17) is installed with a rolling bearing at its central axis to ensure that the three-claw chuck (17) is fixed. when the output shaft (31) rotates.

The data detection component consists of an inner wall line laser displacement sensor 13, an outer wall line laser displacement sensor 15, an inner wall line laser sensor mounting bracket 14, an outer wall line laser sensor mounting bracket 16, screw motors 26, 27 and guide screws 24, 25. etc. composition. During operation, the inner wall laser displacement sensor 13 is driven by the screw motor 14 to perform axial displacement along the guide screw 24. Similarly, the outer wall laser displacement sensor works on the same principle.

The rotating device components are composed of a coupling 19, a reducer 20, a main motor 21, an angle encoder 22, a magnetic transmission driving wheel 28, a magnetic transmission driven wheel 23, etc. When the detection device is working, driven by the main motor 21, the magnetic driving wheel 28 drives the inner wall laser displacement sensor 13 through the sensor bracket 14 to achieve axis rotation; the magnetic driving wheel 28 drives the magnetic driven wheel 23, and the magnetic driven wheel 23 slides through the annular guide rail. The stage 29 rotates along the annular guide rail 18 and at the same time drives the outer wall laser displacement sensor 15 through the sensor bracket 16 to achieve axis rotation.

The detection process of the above device is as follows:

Step 1. The workpiece to be inspected is clamped by the first and second three-claw chucks 12 and 17. One end of the workpiece is first fixed by the second three-claw chuck 17, and the other end is fixed on the guide wire through the first three-claw chuck 12. The two-way movement of bars 6 and 8 completes the clamping and fixing, so that the workpiece is clamped at the appropriate position.

Step 2. After the workpiece to be tested is clamped, the inner and outer wall line laser displacement sensors 13 and 15 can realize axial scanning of the inner and outer walls of the thin-walled cylinder workpiece driven by the first and second screw motors 26 and 27. .

Step 3. After one working cycle, the two line laser displacement sensors are reset to the initial position. Under the work of the main motor 21, the two line laser displacement sensors rotate at a certain angle under the control of the angle encoder 22. The two line laser displacement sensors The sensor continues to work and completes the 360° scanning of the inner and outer walls of the thin-walled cylinder in sequence.

The above is only a specific guide implementation mode of the present utility model, but the design concept of the present utility model is not limited to this. Any non-substantive changes to the present utility model using this concept should be considered as infringement of the protection scope of the present utility model. the behavior of.

Claims (7)

1. The size detection device for the thin-wall cylindrical part comprises a base mounting plate (2), and is characterized in that a Y-axis guide rail (3) is mounted on the base mounting plate (2), an X-axis guide rail (4) is connected to the Y-axis guide rail (3) in a sliding manner, a movable workpiece clamping part is connected to the X-axis guide rail (4) in a sliding manner, the movable workpiece clamping part is positioned at one end of the Y-axis guide rail (3), and a fixed workpiece clamping part fixedly connected with the base mounting plate (2) is mounted at the other end of the Y-axis guide rail (3); the base mounting plate (2) is also fixedly provided with a rotating device, and the rotating device is connected with an inner wall telescopic measurement structure and an outer wall telescopic measurement structure in a transmission way.

2. The thin-walled cylinder component size inspection device of claim 1 wherein the inner wall telescoping measurement structure and the outer wall telescoping measurement structure each include a lead screw mechanism; the lead screw mechanism of the inner wall telescopic measurement structure is connected with an inner wall line laser displacement sensor (13), and the lead screw mechanism of the outer wall telescopic measurement structure is connected with an outer wall line laser displacement sensor (15).

3. The thin-walled cylindrical part size detection device according to claim 2, wherein the inner wall telescopic measurement structure comprises an inner wall line laser sensor mounting bracket (14), a first lead screw motor (26) is mounted on the inner wall line laser sensor mounting bracket (14), the first lead screw motor (26) is connected with a first lead screw (24), the first lead screw (24) is in threaded connection with an inner wall line laser displacement sensor (13), and the inner wall line laser displacement sensor (13) is in sliding connection with the inner wall line laser sensor mounting bracket (14); the outer wall telescopic measurement structure comprises an outer wall line laser sensor mounting bracket (16), a second lead screw motor (27) is mounted on the outer wall line laser sensor mounting bracket (16), a second guide rail lead screw (25) is connected with the second lead screw motor (27), the second guide rail lead screw (25) is connected with an outer wall line laser displacement sensor (15) in a threaded mode, and the outer wall line laser displacement sensor (15) is connected with the outer wall line laser sensor mounting bracket (16) in a sliding mode.

4. The thin-walled cylinder size detection apparatus according to claim 1, characterized in that the rotation apparatus comprises a main motor (21), the main motor (21) is connected with a coupling (19) through a decelerator (20), the coupling (19) is connected with a magnetic driving wheel (28), and an angle encoder (22) is installed in cooperation with the magnetic driving wheel (28); the magnetic driving wheel (28) is in transmission connection with a magnetic driven wheel (23); the magnetic driving wheel (28) is connected with the inner wall line laser sensor mounting bracket (14), and the magnetic driven wheel (23) is connected with the outer wall line laser sensor mounting bracket (16).

5. The thin-walled cylindrical part size detection device according to claim 1, wherein the movable workpiece clamping part and the fixed workpiece clamping part are a first three-jaw chuck (12) and a second three-jaw chuck (17), respectively, and the first three-jaw chuck (12) is slidably connected to the underlying X, Y-axis lead screws (8, 6) through a two-way moving plate (9); the annular mounting ring (30) of the second three-jaw chuck is fixedly arranged on the frame through a gap between the magnetic driving wheel (28) and the magnetic driven wheel (23).

6. The thin-walled cylinder size detection apparatus according to claim 4, characterized in that the magnetic driving wheel (28) is connected to the output shaft (31) by a flat key, and the magnetic driven wheel (23) is rotatably moved along the endless track (18) by being fixedly connected to the endless track slide table (29).

7. The thin-walled cylinder size detection apparatus according to claim 1, wherein a base frame (5) is fixed below the base mounting plate (2), and a base foot rest (1) is fixed to the bottom of the base frame (5).