Automatic alignment device

Abstract

The utility model discloses an automatic alignment device which comprises a support, a supporting base, a tray, a laser displacement sensor, a rotary table bearing, a bottom plate and a driving mechanism. The supporting base is fixedly connected to the bottom of the support, and the bottom plate is installed above the support through bolts. The rotary table bearing is arranged on the bottom plate, and the tray is fixed to the top of the rotary table bearing; the driving mechanism is arranged at the bottom of the rotary table bearing; a laser displacement sensor used for identifying angular characteristics is installed on the side portion of the support. The servo motor rotates and cooperates with the laser displacement sensor to identify different features of the workpiece, a correct angular position is obtained after program calculation, and then the angular feature orientation of the workpiece is adjusted.

Description

Technical Field

[0001] This utility model relates to the field of mechanical control devices, specifically to an automatic alignment device. Background Technology

[0002] In the fields of machining and automated assembly, precise workpiece positioning is a core element in ensuring machining accuracy. Traditional alignment methods largely rely on manual operation. For example, operators need to repeatedly use dial indicators or mechanical micrometers to measure multiple points on the workpiece, and then manually adjust the bolts or handwheels of the platform to gradually correct positional deviations. This process is not only time-consuming and labor-intensive, but also demands a high level of experience and proficiency from the operator. Even minor operational errors or visual judgment deviations can cause the final positioning error to exceed the allowable range. Especially in high-precision machining scenarios, the repeatability of manual operations varies significantly, making it difficult to meet accuracy requirements. Furthermore, prolonged repetitive labor can easily lead to operator fatigue, further exacerbating accuracy fluctuations, resulting in extended production time and decreased yield.

[0003] With the promotion of industrial automation technology, some equipment is attempting to replace manual adjustments with motor-driven mechanical transmission mechanisms, such as using stepper motors or ordinary servo motors to drive slides for position control. However, such basic automation solutions still face many bottlenecks in practical applications. On the one hand, their mechanical structure design is often redundant and complex, such as using multi-stage gear transmission or worm gear systems to amplify torque, resulting in excessively long transmission chains, increased component wear, and frames with insufficient rigid support are prone to deformation or vibration under dynamic loads, directly affecting positioning stability. On the other hand, traditional sensors have limitations in detection capabilities and feedback speed. For example, photoelectric switches can only provide discrete position signals, while the resolution of ordinary rotary encoders is insufficient to capture minute displacement changes. Coupled with signal transmission and control system response delays, the closed-loop control accuracy is limited. In high-speed or high-precision scenarios, such devices are often forced to reduce speed due to error accumulation or overshooting, thus sacrificing the original intention of automation to improve efficiency.

[0004] Therefore, there is an urgent need for an automated, efficient, and highly accurate alignment device.

[0005] Chinese patent application CN108942200A discloses a hole alignment device, which places a perforated bushing on a pressure head. A drive wheel rotates to make the perforated bushing rotate around the central axis of the pressure head. When the perforated bushing rotates so that the hole on the perforated bushing is in the hole alignment reference position, a detection sensor sends a signal to the drive control device. The drive control device, which is connected to the drive motor, controls the drive wheel to stop rotating, thereby realizing the alignment of the hole in the bushing. However, it does not significantly improve the alignment accuracy. Utility Model Content

[0006] To overcome the problems of low alignment accuracy and low efficiency in existing alignment devices, this utility model provides an automatic alignment device. By using a servo motor to rotate and a laser displacement sensor to identify different features of the workpiece, the correct angular position is obtained after program calculation, and then the orientation of the angular features of the workpiece is adjusted, thus achieving high-precision and high-efficiency alignment.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] An automatic alignment device includes a bracket, a support base, a tray, a laser displacement sensor, a turntable bearing, a base plate, and a drive mechanism. The support base is fixedly connected to the bottom of the bracket, and the base plate is bolted to the top of the bracket. The turntable bearing is disposed on the base plate, and the tray is fixed to the top of the turntable bearing. The drive mechanism is disposed at the bottom of the turntable bearing. A laser displacement sensor for identifying angular features of workpieces on the tray is installed on the side of the bracket.

[0009] Furthermore, the drive mechanism includes a servo motor, a reducer, and a connecting flange. The servo motor is connected to the connecting flange via the reducer. The connecting flange is located at the center of the turntable bearing and is used to connect the reducer and the turntable bearing.

[0010] Furthermore, the output shaft of the servo motor is coaxially connected to the input end of the reducer via a coupling.

[0011] Furthermore, the laser displacement sensor's recognition direction is perpendicular to the tray's central axis, and its signal output terminal is electrically connected to the servo motor's control system.

[0012] Furthermore, the bracket is a frame structure, comprising a support frame formed by interconnecting multiple square aluminum profiles.

[0013] Furthermore, the tray is bolted to the top of the turntable bearing.

[0014] Furthermore, the tray is provided with grooves for assembling workpieces.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) Automated control, saving manpower. The servo motor of this application is coaxially connected to the reducer through a coupling. Combined with the signal response of the laser displacement sensor, a closed-loop control system is formed to realize automated alignment.

[0017] (2) Effectively improve alignment accuracy. The laser displacement sensor of this application detects the angular characteristics of the workpiece and feeds back the signal in real time. Combined with the servo motor, it realizes the control of alignment accuracy and effectively improves alignment accuracy.

[0018] (3) Easy installation. The bracket, base, tray and other structures of this application are all fixed by bolts, making installation or disassembly convenient.

[0019] In summary, this application presents an automatic alignment device with ingenious design and reasonable layout. Through structural design, the alignment device possesses advantages such as saving manpower, high precision, and convenient installation. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a top view of the present invention;

[0022] Figure 3 For along Figure 2 Sectional view of line AA in the middle;

[0023] In the diagram: 1. Bracket, 2. Support base, 3. Tray, 4. Laser displacement sensor, 5. Turntable bearing, 6. Base plate, 7. Servo motor, 8. Reducer, 9. Connecting flange, 10. Groove. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0025]

Example 1

[0026] The following is in conjunction with the appendix Figure 1-3 Further explanation of this utility model:

[0027] refer to Figure 1-3 This further explains the structural composition of the present invention.

[0028] An automatic alignment device includes a bracket 1, a support base 2, a tray 3, a laser displacement sensor 4, a turntable bearing 5, a base plate 6, a servo motor 7, a reducer 8, and a connecting flange 9.

[0029] refer to Figure 1 The bracket 1 is a frame structure, consisting of a support frame made up of multiple interconnected square aluminum profiles. There are four support bases 2, which are fixed to the square aluminum profiles at the bottom of the bracket 1 with bolts. The base plate 6 is installed on top of the bracket 1 with bolts.

[0030] refer to Figure 2-3 The turntable bearing 5 is mounted on the base plate 6. The tray 3 is bolted to the top of the turntable bearing 5. The servo motor 7 is connected to the connecting flange 9 via the reducer 8. The connecting flange 9 is located at the center of the turntable bearing 5 and is used to connect the reducer 8 and the turntable bearing 5.

[0031] The laser displacement sensor 4 is installed on the side of the bracket 1 and is fixed to the square aluminum profile on one side of the bracket 1 by aluminum tubes and connectors.

[0032]

Example 2

[0033] The structures in this embodiment are consistent with those in Embodiment 1. Based on this, the technical solution of this utility model will be further explained:

[0034] Angular features are special markings on the surface of a workpiece. Since the angles at which workpieces are placed are not consistent during assembly, and some workpieces have specific requirements for their placement, manual placement of workpieces cannot guarantee accuracy and increases labor costs. The laser displacement sensor of this invention identifies angular features and, in conjunction with the control system and drive mechanism, adjusts the facing angle of the angular features to achieve precise alignment of the workpiece.

[0035] The robot automatic feeding system achieves stable embedding of the workpiece within the tray 3 by matching the outer diameter of the workpiece with the inner diameter of the tray 3.

[0036] The servo motor 7 drives the turntable bearing 5 to rotate in a predetermined direction based on a preset program. The laser displacement sensor 4 captures the angular features of the workpiece surface in real time and transmits the feature coordinates to the control system through the processing module. The control system calculates the actual angular deviation of the workpiece, generates a compensation signal and feeds it back to the servo motor 7, dynamically adjusting its rotation angle and speed until the angular features of the workpiece are aligned with the preset reference.

[0037] The embodiments described above are merely preferred embodiments of this utility model, and not all feasible embodiments of this utility model. For those skilled in the art, any obvious modifications made without departing from the principles and spirit of this utility model should be considered to be included within the scope of protection of the claims of this utility model.

Claims

1. An automatic alignment device, characterized in that, It includes a bracket (1), a support base (2), a tray (3), a laser displacement sensor (4), a turntable bearing (5), a base plate (6), and a drive mechanism; the support base (2) is fixedly connected to the bottom of the bracket (1), and the base plate (6) is installed on the top of the bracket (1) by bolts; The turntable bearing (5) is mounted on the base plate (6), and the tray (3) is fixed to the top of the turntable bearing (5); the drive mechanism is mounted at the bottom of the turntable bearing. A laser displacement sensor (4) is mounted on the side of the bracket (1) to identify the angular features of the workpiece on the tray (3).

2. The automatic alignment device of claim 1, wherein The drive mechanism includes a servo motor (7), a reducer (8), and a connecting flange (9). The servo motor (7) is connected to the connecting flange (9) via the reducer (8). The connecting flange (9) is located at the center of the turntable bearing (5) and is used to connect the reducer (8) and the turntable bearing (5).

3. An automatic alignment device according to claim 2, wherein The output shaft of the servo motor (7) is coaxially connected to the input end of the reducer (8) via a coupling.

4. The automatic alignment device of claim 2, wherein The laser displacement sensor (4) is perpendicular to the central axis of the tray (3) in the recognition direction, and its signal output terminal is electrically connected to the control system of the servo motor (7).

5. The automatic alignment device of claim 1, wherein The bracket (1) is a frame structure, including a support frame formed by connecting multiple square aluminum profiles.

6. The automatic alignment device of claim 1, wherein The tray (3) is bolted to the top of the turntable bearing (5).

7. An automatic alignment device according to claim 6, wherein The tray (3) is provided with a groove (10) for assembling workpieces.

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