Circle center positioning device and circle center positioning method

Abstract

The invention relates to the technical field of circle center measurement, in particular to a circle center positioning device and a circle center positioning method.The circle center positioning device comprises an installation part, a coplanar positioning module and a concentric positioning module, and the installation part is used for providing an installation foundation. The coplanar positioning module comprises a plurality of planar distance measuring units which are distributed on the mounting piece in the circumferential direction of the mounting piece; the concentric positioning module comprises a plurality of concentric distance measuring units distributed at equal intervals in the circumferential direction of the installation part, the distance measuring range of the concentric distance measuring units is a circular-truncated-cone-shaped space, and the circular-truncated-cone-shaped space is coaxial with the installation part. According to the circle center positioning device provided by the embodiment of the invention, the inclination angle of the mounting piece is adjusted based on the detection result of the coplanar positioning module, so that the mounting piece is parallel to the workpiece, then the displacement of the mounting piece is adjusted based on the detection result of the concentric positioning module, so that the mounting piece and the workpiece are coaxial, convenience and rapidness are achieved, and the accuracy and the positioning efficiency are improved.

Description

Technical Field

[0001] The present application relates to the field of circle center measurement technology, and in particular to a circle center positioning device and a circle center positioning method. Background Art

[0002] During installation, a key piece of testing equipment in intelligent connected vehicle testing systems requires rapid and accurate locating of the vehicle's steering wheel center to accurately record the steering wheel's rotation angle during formal testing. During installation, locating the center of the vehicle's steering wheel often takes considerable time, resulting in lengthy testing.

[0003] Existing intelligent connected vehicle testing systems often use fixed points to continuously rotate the vehicle's steering wheel, roughly determining whether the test equipment is centered by ensuring the distances from each point on the vehicle's steering wheel are consistent. This technique is time-consuming and inaccurately locates the center of the vehicle's steering wheel. Other centering or centering devices are often mechanical, bulky, and have specific requirements for the size of the structure being centered, making them inconvenient to operate. Summary of the Invention

[0004] The purpose of this application is to provide a circle center positioning device and a circle center positioning method, which can quickly and easily locate the center of a workpiece, thereby improving the accuracy and efficiency of circle center positioning.

[0005] In order to achieve the above-mentioned object, in a first aspect, the present invention provides a circle center positioning device, comprising:

[0006] Mounting parts, which are used to provide a mounting base;

[0007] A same-plane positioning module, comprising a plurality of plane distance measuring units distributed on the mounting member in a circumferential direction around the mounting member, wherein the plurality of plane distance measuring units are used to obtain a minimum distance to the workpiece;

[0008] The concentric positioning module includes a plurality of concentric distance measuring units equidistantly distributed around the mounting part. The concentric distance measuring units are used to obtain the minimum distance to the workpiece. The distance measuring range of the plurality of concentric distance measuring units is a frustum-shaped space, and the frustum-shaped space is coaxial with the mounting part.

[0009] In an optional embodiment, a driving module and a control module are further included, wherein the driving module is used to drive the mounting member to rotate;

[0010] The plane where the mounting member is located has a first straight line passing through the two planar distance measuring units and a second straight line passing through the two planar distance measuring units, and the first straight line and the second straight line intersect;

[0011] The control module is configured to: first, based on the distance measurement results of the two plane distance measurement units on the first straight line, control the driving module to drive the mounting member to rotate so that the distance measurement results of the two plane distance measurement units on the first straight line are equal; then, based on the distance measurement results of the two plane distance measurement units on the second straight line, control the driving module to drive the mounting member to rotate with the first straight line as the rotation axis so that the distance measurement results of the two plane distance measurement units on the second straight line are equal.

[0012] In an optional embodiment, it further includes a rack;

[0013] The drive module includes a first drive unit, which includes a first bracket and a first drive motor. The first drive motor is installed on the frame, one end of the first bracket is installed on the output shaft of the first drive motor, and the other end of the first bracket is connected to the mounting member. The output shaft axis of the first drive motor is parallel to the second straight line, and the rotation of the first drive motor drives the mounting member to rotate.

[0014] In an optional embodiment, the first bracket is hinged to the mounting member;

[0015] The drive module also includes a second drive unit, which includes a second drive motor and a hinged rod. The second drive motor is arranged on the first bracket. The hinged rod includes a first end and a second end that are hingedly connected. The first end is hinged to the output shaft of the second drive motor, and the second end is hinged to the mounting member. The output shaft axis of the second drive motor is parallel to the first straight line, and the rotation of the second drive motor drives the mounting member to rotate around the first straight line.

[0016] In an optional embodiment, the concentric distance measuring unit includes a distance measuring sensor and an articulated seat, the articulated seat is fixedly mounted on the mounting member, and the distance measuring sensor is hingedly mounted on the articulated seat.

[0017] In an optional embodiment, a circle center marking module is further included, and the circle center marking module is arranged on the mounting member;

[0018] The control module is configured to control the circle center marking module to mark the center position of the workpiece under the condition that the distance measurement results of the concentric distance measurement units are equal.

[0019] In an optional embodiment, a display is further included, and the display is used to display the distance measurement results of the planar distance measurement unit and / or the distance measurement results of the concentric distance measurement unit.

[0020] In an optional embodiment, multiple displays are provided separately.

[0021] In an optional embodiment, a speaker is further included, and the speaker is used to feed back sound signals to the outside world;

[0022] The control module is configured to control the loudspeaker to feed back a sound signal for completing the positioning of the workpiece center under the condition that the distances between the multiple concentric distance measuring units and the workpiece are equal.

[0023] In a second aspect, the present invention provides a circle center positioning method, which is implemented using the circle center positioning device of any of the aforementioned embodiments, and the steps include:

[0024] Based on the distance measurement results of the two planar distance measuring units on the first straight line, the mounting member is rotated so that the distance measurement results of the two planar distance measuring units on the first straight line are equal, the first straight line and the second straight line are located in the plane where the mounting member is located and are intersecting, the first straight line passes through the two planar distance measuring units, and the second straight line passes through the two planar distance measuring units;

[0025] Based on the distance measurement results of the two planar distance measuring units on the second straight line, the mounting member is rotated with the first straight line as the rotation axis so that the distance measurement results of the two planar distance measuring units on the second straight line are equal, thereby making the mounting member parallel to the workpiece;

[0026] Under the condition of keeping the mounting part parallel to the workpiece, the mounting part is moved based on the distance measurement result of the concentric distance measurement unit to make the mounting part coaxial with the workpiece, thereby completing the center positioning of the workpiece.

[0027] The center positioning device provided in the embodiment of the present application adjusts the inclination angle of the mounting part based on the detection results of the coplanar positioning module so that the mounting part is parallel to the workpiece, and then adjusts the displacement of the mounting part based on the detection results of the cocenter positioning module so that the mounting part and the workpiece are coaxial. This is convenient and fast, and improves accuracy and positioning efficiency.

[0028] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic structural diagram from one perspective of one embodiment of the circle center positioning device provided by the present application;

[0031] Figure 2 A schematic structural diagram from two perspectives of one embodiment of the circle center positioning device provided by this application;

[0032] Figure 3A schematic structural diagram from one perspective of one embodiment of a concentric distance measuring unit of a circle center positioning device provided by the present application;

[0033] Figure 4 A schematic structural diagram of another embodiment of the circle center positioning device provided by the present application from three perspectives;

[0034] Figure 5 This is a schematic diagram of one embodiment of the control module of the circle center positioning device provided in this application.

[0035] icon:

[0036] 100-mounting member; 110-first straight line; 120-second straight line;

[0037] 200-plane distance measurement unit;

[0038] 300-concentric distance measuring unit; 310-distance measuring sensor; 320-articulated seat;

[0039] 400-control module;

[0040] 500 - first bracket; 510 - hinged rod; 520 - first drive motor; 530 - second drive motor;

[0041] 600-circle center mark module;

[0042] 700-display;

[0043] 800-rack;

[0044] 900 - Processor; 910 - Memory; 920 - Computer program. DETAILED DESCRIPTION

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0046] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0047] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0048] In a first aspect, an embodiment of the present application provides a circle center positioning device that can be used to find the center of a circular workpiece. The circle center positioning device includes a mounting member 100, a coplanar positioning module, and a cocenter positioning module.

[0049] like Figure 4 As shown, the mounting member 100 is used to provide a mounting base. Exemplarily, the mounting member 100 is a ring structure.

[0050] The in-plane positioning module includes a plurality of plane distance measuring units 200 distributed on the mounting member 100 in a circumferential direction around the mounting member 100 . The plurality of plane distance measuring units 200 are used to obtain a minimum distance to the workpiece.

[0051] For example, three plane distance measuring units 200 are provided, and the three plane distance measuring units 200 are evenly distributed on the mounting member 100 around the circumference of the positioning nozzle 100; however, in another embodiment, as shown in FIG. Figure 4 As shown, four planar distance measuring units 200 are provided, and the four planar distance measuring units 200 are evenly distributed around the circumference of the positioning nozzle 100 on the mounting member 100. Of course, other numbers of planar distance measuring units 200 can also be provided, such as five. In this application, the technical solution is described using the example of four planar distance measuring units 200.

[0052] Exemplarily, the plane distance measuring unit 200 includes a distance meter that can detect the minimum distance between the distance meter and the workpiece, and the distance meter is fixed to the mounting member 100 by, for example, welding, gluing, clamping, or bolting.

[0053] The concentric positioning module includes a plurality of concentric distance measuring units 300 equidistantly distributed around the mounting member 100 . The concentric distance measuring units 300 are used to obtain the minimum distance to the workpiece. The distance measuring range of the plurality of concentric distance measuring units 300 is a frustum-shaped space, which is coaxial with the mounting member 100 .

[0054] The angle between the distance measuring direction of the concentric distance measuring unit 300 and the axis of the mounting member 100 is, for example, 110°, then the busbar of the truncated cone-shaped space and the axis of the mounting member 100 form an angle of 110°. Of course, the angle between the distance measuring direction of the concentric distance measuring unit 300 and the axis of the mounting member 100 can also be set to 120° or 150°, etc.

[0055] For example, three concentric distance measuring units 300 are provided, and the three concentric distance measuring units 300 are evenly spaced on the mounting member 100. However, in another embodiment, four concentric distance measuring units 300 are provided, and the four concentric distance measuring units 300 are evenly spaced on the mounting member 100. Of course, other numbers of concentric distance measuring units 300 can also be provided, such as five. In this application, the technical solution is described using the example of three concentric distance measuring units 300.

[0056] During use, the mounting member 100 is first adjusted to be parallel to the annular workpiece using the distance measurement results of the plane distance measurement unit 200. Then, the orientation of the mounting member 100 is adjusted using the distance measurement results of the concentric distance measurement unit 300 so that the mounting member 100 is concentric with the workpiece. The center of the mounting member 100 is the center of the workpiece. The specific use process is as follows:

[0057] like Figure 2 As shown, it is assumed that a straight line passing through two of the oppositely arranged planar ranging units 200 is a first straight line 110, and a straight line passing through the other two oppositely arranged planar ranging units 200 is a second straight line 120, and the first straight line 110 is perpendicular to the second straight line 120 (it can be understood that if three planar ranging units 200 are provided, the first straight line 110 and the second straight line 120 form an angle, and the first straight line 110 and the second straight line 120 pass through the same planar ranging unit 200). For ease of description and understanding, the two planar ranging units 200 located on the first straight line 110 are named the first rangefinder and the second rangefinder, and the first rangefinder and the second rangefinder are arranged opposite each other. The two planar ranging units 200 located on the second straight line 120 are named the third rangefinder and the fourth rangefinder, and the third rangefinder and the fourth rangefinder are arranged opposite each other.

[0058] First, obtain the measurement results of the first and second rangefinders. If the distance between the first rangefinder and the workpiece is greater than the distance between the second rangefinder and the workpiece, rotate the mounting member 100 toward the first rangefinder to equalize the distance between the first rangefinder and the workpiece, thereby aligning the first straight line 110 with the plane of the workpiece. If the distance between the first rangefinder and the workpiece is less than the distance between the second rangefinder and the workpiece, rotate the mounting member 100 toward the second rangefinder to equalize the distance between the first rangefinder and the workpiece, thereby aligning the first straight line 110 with the plane of the workpiece. The rotation of the mounting member 100 can be achieved manually by an operator.

[0059] The measurement results of the third and fourth rangefinders are then obtained. If the distance between the third rangefinder and the workpiece is greater than the distance between the fourth rangefinder and the workpiece, the mounting member 100 is rotated toward the third rangefinder with the first straight line 110 as the rotation axis, so that the distance between the third rangefinder and the workpiece is equal to the distance between the fourth rangefinder and the workpiece, thereby making the second straight line 120 parallel to the plane of the workpiece. If the distance between the third rangefinder and the workpiece is less than the distance between the fourth rangefinder and the workpiece, the mounting member 100 is rotated toward the fourth rangefinder with the first straight line 110 as the rotation axis, so that the distance between the third rangefinder and the workpiece is equal to the distance between the fourth rangefinder and the workpiece, thereby making the second straight line 120 parallel to the plane of the workpiece. Once both the first and second straight lines 110, 120 are parallel to the plane of the workpiece, the mounting member 100 is parallel to the plane of the workpiece. The rotation of the mounting member 100 can be achieved manually by the operator.

[0060] Then obtain the measurement results of each concentric distance measuring unit 300. While keeping the mounting member 100 parallel to the workpiece, according to the measurement results of the concentric distance measuring unit 300, translate the mounting member 100 up, down, left or right (assuming that the workpiece and the mounting member 100 are parallel to the vertical plane), or move the mounting member 100 away from or close to the workpiece. When the measurement results of each concentric distance measuring unit 300 are equal, the mounting member 100 is coaxial with the workpiece, and the center of the mounting member 100 is the center of the workpiece.

[0061] In this application, based on the detection results of the coplanar positioning module, the inclination angle of the mounting member 100 is adjusted so that the mounting member 100 is parallel to the workpiece, and then based on the detection results of the cocenter positioning module, the displacement of the mounting member 100 is adjusted so that the mounting member 100 is coaxial with the workpiece. This is convenient and quick, and improves accuracy and positioning efficiency.

[0062] In order to improve the automation level, the mounting member 100 is driven to rotate and move by an automation device, such as Figure 1 and Figure 2As shown, in one embodiment, the center positioning device also includes a driving module and a control module 400, and the driving module is used to drive the mounting member 100 parallel to the plane where the workpiece is located, that is, the driving module is used to drive the mounting member 100 to rotate around the first straight line 110 and the second straight line 120.

[0063] The plane where the mounting member 100 is located has a first straight line 110 passing through the two plane distance measuring units 200 and a second straight line 120 passing through the two plane distance measuring units 200 , and the first straight line 110 and the second straight line 120 intersect.

[0064] The control module 400 is configured to: first, based on the distance measurement results of the two plane distance measuring units 200 on the first straight line 110, control the driving module to drive the mounting member 100 to rotate, so that the distance measurement results of the two plane distance measuring units 200 on the first straight line 110 are equal, thereby making the first straight line 110 parallel to the plane where the workpiece is located; and then, based on the distance measurement results of the two plane distance measuring units 200 on the second straight line 120, control the driving module to drive the mounting member 100 to rotate with the first straight line 110 as the rotation axis, so that the distance measurement results of the two plane distance measuring units 200 on the second straight line 120 are equal.

[0065] Exemplarily, the driving module is a robotic arm, which drives the mounting member 100 to rotate or move.

[0066] Exemplarily, the control module 400 includes at least a computer unit, which includes a memory 910, a processor 900, and a computer program 920 stored in the memory 910 and executable on the processor 900. When the processor 900 executes the computer program 920, it can achieve the following: first, based on the distance measurement results of the two plane distance measurement units 200 on the first straight line 110, control the driving module to drive the mounting member 100 to rotate so that the distance measurement results of the two plane distance measurement units 200 on the first straight line 110 are equal; then, based on the distance measurement results of the two plane distance measurement units 200 on the second straight line 120, control the driving module to drive the mounting member 100 to rotate with the first straight line 110 as the rotation axis so that the distance measurement results of the two plane distance measurement units 200 on the second straight line 120 are equal.

[0067] The memory 910 includes at least one type of readable storage medium, including flash memory, hard disk, multimedia card, card-type memory 910 (e.g., SD or DX memory 910), magnetic memory 910, magnetic disk, optical disk, etc. In some embodiments, the memory 910 can be an internal storage unit of a computer device, such as a hard disk of the computer device. In other embodiments, the memory 910 can also be an external storage device, such as a plug-in hard disk, a SmartMediaCard (SMC), a Secure Digital (SD) card, a flash memory card, etc. Furthermore, the memory 910 can also include both an internal storage unit of a computer device and an external storage device. The memory 910 can be used not only to store application software and various types of data installed in the computer device, but also to temporarily store data that has been output or is about to be output.

[0068] Among them, in some embodiments, the processor 900 can be an electronic control unit (Electronic Control Unit, abbreviated as ECU, also known as a vehicle computer), a central processing unit 900 (Central Processing Unit, CPU), a controller, a microcontroller, a microprocessor 900 or other data processing chip, used to run the program code stored in the memory 910 or process data, such as executing access restriction programs.

[0069] It should be pointed out that Figure 5 The structure shown does not constitute a limitation on the computer device. In other embodiments, the computer device may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0070] Different from the technical solution in which the driving module includes a robotic arm in the above embodiment, Figure 1 and Figure 2 As shown, in one embodiment, the circle center positioning device further includes a frame 800 .

[0071] like Figure 2 As shown, the driving module includes a first driving unit, and the first driving unit includes a first bracket 500 and a first driving motor 520. The first driving motor 520 is installed on the frame 800, and one end of the first bracket 500 is installed on the output shaft of the first driving motor 520. The other end of the first bracket 500 is connected to the mounting member 100. The first driving motor 520 rotates to drive the mounting member 100 to rotate, so that the first straight line 110 is parallel to the plane where the workpiece is located; the output shaft axis of the first driving motor 520 is parallel to the second straight line 120, and the first driving motor 520 does not change the angle between the second straight line 120 and the workpiece during the rotation of the mounting member 100.

[0072] After the first straight line 110 is parallel to the plane where the workpiece is located, the operator can manually drive the mounting member 100 to rotate around the first straight line 110 so that the second straight line 120 is parallel to the plane where the workpiece is located.

[0073] Exemplarily, the first bracket 500 is a U-shaped structure.

[0074] For example, Figure 2 As shown, the first bracket 500 is hinged to the mounting member 100 , and the first straight line 110 passes through the hinge point.

[0075] like Figure 1 and Figure 2 As shown, in one embodiment, the control module 400 is mounted on the rack 800 , and the fixing method is, for example, snap connection, gluing or bolt connection.

[0076] To further improve the automation level, instead of manually driving the mounting member 100 to rotate around the first straight line 110, as shown in FIG. Figure 1 and Figure 2 As shown, in one embodiment, the first bracket 500 is hinged to the mounting member 100 .

[0077] The driving module further includes a second driving unit, which includes a second driving motor 530 and a hinge rod 510. The second driving motor 530 is fixedly mounted on the first bracket 500, and the fixing method is, for example, welding, clamping or bolting.

[0078] The hinge rod 510 includes a first end and a second end that are hingedly connected. The first end is hingedly connected to the output shaft of the second drive motor 530. The rotation of the second drive motor 530 drives the first end to rotate.

[0079] The second end is hinged to the mounting member 100, and the output shaft axis of the second drive motor 530 is parallel to the first straight line 110. The second drive motor 530 rotates to drive the mounting member 100 to rotate around the first straight line 110, so that the second straight line 120 is parallel to the plane of the workpiece.

[0080] Exemplarily, two second ends are provided, one second end is hinged to one end of the first end, and the other second end is hinged to the other end of the first end, and the hinge points between the two second ends and the mounting member 100 pass through the second straight line 120 .

[0081] like Figure 2 and Figure 3 As shown, in one embodiment, the concentric distance measuring unit 300 includes a distance measuring sensor 310 and an articulated seat 320. The articulated seat 320 is fixedly mounted on the mounting member 100 by, for example, welding, gluing, clamping or bolting.

[0082] The distance measuring sensor 310 is hingedly mounted on the hinge seat 320 , so that the distance measuring sensor 310 can adjust the angle between the distance measuring sensor 310 and the axis of the mounting member 100 , thereby changing the distance measuring range of the distance measuring sensor 310 .

[0083] like Figure 2 As shown, in one embodiment, the circle center positioning device further includes a circle center marking module 600 , and the circle center marking module 600 is disposed on the mounting member 100 .

[0084] The control module 400 is configured to control the circle center marking module 600 to mark the center position of the workpiece under the condition that the distance measurement results of the concentric distance measurement units 300 are equal.

[0085] Exemplarily, when the processor 900 executes the computer program 920 , it can achieve: under the condition that the distance measurement results of each concentric distance measurement unit 300 are equal, controlling the circle center marking module 600 to mark the center position of the workpiece.

[0086] Exemplarily, the center marking module 600 includes a laser spotlight, which is coaxial with the mounting member 100. When the mounting member 100 is coaxial with the workpiece, the control module 400 controls the laser spotlight to emit rays toward the workpiece, and the position where the laser is irradiated on the workpiece is the center of the workpiece.

[0087] Unlike the aforementioned embodiment in which the center marking module 600 includes a laser spotlight, in another embodiment, the center marking module 600 includes a telescopic rod, which is mounted on and coaxial with the mounting member 100. When the mounting member 100 is coaxial with the workpiece, the control module 400 controls the telescopic rod to extend toward the workpiece. The position indicated by the telescopic rod on the workpiece is the center of the workpiece. Exemplarily, the telescopic rod includes, but is not limited to, a hydraulic telescopic mechanism, a pneumatic telescopic mechanism, an electric push rod telescopic mechanism, a threaded screw telescopic mechanism, or a linear motor.

[0088] In order to obtain the distance measurement result of the plane distance measurement unit 200, as shown in FIG. Figure 1 or Figure 4 As shown, in one embodiment, the circle center positioning device further includes a display 700 , and the display 700 is used to display the distance measurement result of the plane distance measurement unit 200 .

[0089] In order to obtain the distance measurement result of the concentric distance measurement unit 300, as shown in FIG. Figure 1 or Figure 4 As shown, in one embodiment, the circle center positioning device further includes a display 700 , and the display 700 is used to display the distance measurement result of the concentric distance measurement unit 300 .

[0090] like Figure 1 or Figure 4As shown, in one embodiment, the circle center positioning device further includes a display 700 , and the display 700 is used to display the distance measurement results of the concentric distance measurement unit 300 and the distance measurement results of the planar distance measurement unit 200 .

[0091] like Figure 1 or Figure 4 As shown, in one embodiment, the display 700 is provided in multiple parts. For example, three displays 700 are provided. In other embodiments, four, five, or six displays 700 are provided.

[0092] In order to promptly obtain a signal indicating that the mounting member 100 has successfully located the center of the workpiece, in one embodiment, the center positioning device further includes a speaker, which is used to feed back a sound signal to the outside world.

[0093] The control module 400 is configured to control the loudspeaker to feed back a sound signal indicating that the workpiece center position is completed, under the condition that the distances between the multiple concentric distance measuring units 300 and the workpiece are equal.

[0094] Exemplarily, when the processor 900 executes the instruction program, it can achieve: under the condition that the distances between the multiple concentric distance measuring units 300 and the workpiece are equal, controlling the speaker to feed back a sound signal indicating that the workpiece center positioning is completed.

[0095] In a second aspect, an embodiment of the present application provides a method for locating the center of an annular workpiece, which is implemented using the center locating device of any of the above embodiments. The center locating method includes the following steps:

[0096] S100: Based on the distance measurement results of the two plane distance measurement units 200 on the first straight line 110, rotate the mounting member 100 so that the distance measurement results of the two plane distance measurement units 200 on the first straight line 110 are equal, the first straight line 110 and the second straight line 120 are located in the plane where the mounting member 100 is located and the first straight line 110 and the second straight line 120 are arranged to intersect, the first straight line 110 passes through the two plane distance measurement units 200, and the second straight line 120 passes through the two plane distance measurement units 200.

[0097] S200: Based on the distance measurement results of the two plane distance measurement units 200 on the second straight line 120, the mounting member 100 is rotated with the first straight line 110 as the rotation axis so that the distance measurement results of the two plane distance measurement units 200 on the second straight line 120 are equal, thereby making the mounting member 100 parallel to the workpiece.

[0098] S300: Under the condition that the mounting member 100 is kept parallel to the workpiece, based on the distance measurement result of the concentric distance measurement unit 300, the mounting member 100 is moved to make the mounting member 100 coaxial with the workpiece, thereby completing the center positioning of the workpiece.

[0099] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0100] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. The center positioning device is characterized by: include: A mounting member (100), the mounting member (100) being used to provide a mounting base; A co-planar positioning module, the co-planar positioning module comprising a plurality of plane distance measuring units (200) distributed on the mounting member (100) in a circumferential direction around the mounting member (100), the plurality of plane distance measuring units (200) being used to obtain a minimum distance from a workpiece; A concentric positioning module is provided, comprising a plurality of concentric distance measuring units (300) equidistantly distributed around the mounting member (100), the concentric distance measuring units (300) being used to obtain a minimum distance from a workpiece, the distance measuring range of the plurality of concentric distance measuring units (300) being a truncated cone-shaped space, and the truncated cone-shaped space being coaxial with the mounting member (100).

2. The circle center positioning device according to claim 1, characterized in that: It also includes a driving module and a control module (400), wherein the driving module is used to drive the mounting member (100) to rotate; The plane where the mounting member (100) is located has a first straight line (110) passing through the two plane distance measuring units (200), and a second straight line (120) passing through the two plane distance measuring units (200), and the first straight line (110) and the second straight line (120) intersect; The control module (400) is configured to: first, based on the distance measurement results of the two plane distance measurement units (200) on the first straight line (110), control the driving module to drive the mounting member (100) to rotate, so that the distance measurement results of the two plane distance measurement units (200) on the first straight line (110) are equal; and then, based on the distance measurement results of the two plane distance measurement units (200) on the second straight line (120), control the driving module to drive the mounting member (100) to rotate with the first straight line (110) as the rotation axis, so that the distance measurement results of the two plane distance measurement units (200) on the second straight line (120) are equal.

3. The circle center positioning device according to claim 2, characterized in that: Also included is a rack (800); The driving module includes a first driving unit, the first driving unit includes a first bracket (500) and a first driving motor (520), the first driving motor (520) is mounted on the frame (800), one end of the first bracket (500) is mounted on the output shaft of the first driving motor (520), the other end of the first bracket (500) is connected to the mounting member (100), the output shaft axis of the first driving motor (520) is parallel to the second straight line (120), and the first driving motor (520) rotates to drive the mounting member (100) to rotate.

4. The circle center positioning device according to claim 3, characterized in that: The first bracket (500) is hinged to the mounting member (100); The drive module further includes a second drive unit, the second drive unit including a second drive motor (530) and a hinged rod (510), the second drive motor (530) being arranged on the first bracket (500), the hinged rod (510) including a first end and a second end being hingedly connected, the first end being hingedly connected to an output shaft of the second drive motor (530), the second end being hingedly connected to the mounting member (100), the output shaft axis of the second drive motor (530) being parallel to the first straight line (110), and the second drive motor (530) rotating to drive the mounting member (100) to rotate around the first straight line (110).

5. The circle center positioning device according to claim 1, characterized in that: The concentric distance measuring unit (300) comprises a distance measuring sensor (310) and an articulated seat (320), wherein the articulated seat (320) is fixedly mounted on the mounting member (100), and the distance measuring sensor (310) is articulatedly mounted on the articulated seat (320).

6. The circle center positioning device according to claim 2, characterized in that: It also includes a circle center marking module (600), wherein the circle center marking module (600) is arranged on the mounting member (100); The control module (400) is configured to control the circle center marking module (600) to mark the circle center position of a workpiece under the condition that the distance measurement results of the concentric distance measurement units (300) are equal.

7. The circle center positioning device according to claim 1, characterized in that: It also includes a display (700), and the display (700) is used to display the distance measurement result of the planar distance measurement unit (200) and / or the distance measurement result of the concentric distance measurement unit (300).

8. The circle center positioning device according to claim 7, characterized in that: The display (700) is provided in multiple parts.

9. The circle center positioning device according to claim 2, characterized in that: Also includes a speaker, the speaker is used to feed back sound signals to the outside world; The control module (400) is configured to control the loudspeaker to feed back a sound signal for completing the center positioning of the workpiece under the condition that the distances between the multiple concentric distance measuring units (300) and the workpiece are equal.

10. A circle center positioning method, characterized in that: The method is implemented by using the circle center positioning device according to any one of claims 1 to 9, and the steps include: Based on the distance measurement results of the two plane distance measurement units (200) on the first straight line (110), the mounting member (100) is rotated so that the distance measurement results of the two plane distance measurement units (200) on the first straight line (110) are equal, the first straight line (110) and the second straight line (120) are located in the plane where the mounting member (100) is located and are arranged to intersect, the first straight line (110) passes through the two plane distance measurement units (200), and the second straight line (120) passes through the two plane distance measurement units (200); Based on the distance measurement results of the two plane distance measurement units (200) on the second straight line (120), the mounting member (100) is rotated with the first straight line (110) as the rotation axis, so that the distance measurement results of the two plane distance measurement units (200) on the second straight line (120) are equal, thereby making the mounting member (100) parallel to the workpiece; Under the condition of keeping the mounting member (100) parallel to the workpiece, the mounting member (100) is moved based on the distance measurement result of the concentric distance measurement unit (300) so that the mounting member (100) and the workpiece are coaxial, thereby completing the center positioning of the workpiece.

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