CN109827903B - A kind of piston detection defect detection device and method - Google Patents

Abstract

The invention discloses a piston detection defect detection device and method, and relates to the technical field of piston detection. The device includes a rotation mechanism, a sensing mechanism, a coordinate mechanism and a control mechanism. The rotating mechanism includes a rotating platform and a drive assembly, the rotating platform is used to install the piston, and the drive assembly is used to drive the piston to rotate or be stationary in the horizontal direction; the sensing mechanism includes a line laser rangefinder and a rangefinder direction motor. The distance meter direction motor is used to drive the line laser distance meter to move to collect distance information at different positions of the piston; the coordinate mechanism is connected with the sensing mechanism, and is used to drive the sensing mechanism along the X-axis, Y-axis in the XYZ three-dimensional coordinate system axis or Z-axis movement; the control mechanism is configured to control the coordinate mechanism to drive the sensing mechanism to move along the X-axis, Y-axis or Z-axis, and convert the distance information collected by the moved line laser rangefinder into coordinate information to detect the piston Defects. The device can improve piston detection efficiency and ensure safety.

Description

A device and method for detecting defects in piston detection

technical field

The present invention relates to the technical field of piston detection, and in particular, to a device and method for detecting defects in piston detection.

Background technique

As one of the important parts of the automobile engine, the detection accuracy of the piston determines the development speed of the automobile manufacturing industry. Piston detection has become an important part of the automobile manufacturing industry. In the existing technology, most of the piston detection adopts contact detection, and the detection head will cause wear and tear after long-term use, causing secondary damage to the surface of the piston, the detection accuracy is not high, the detection speed is slow, the safety and stability are not good, and it cannot meet the high requirements. High-precision and high-efficiency piston detection requirements.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a piston detection defect detection device, which can solve the problems of low detection accuracy and slow detection speed in the prior art, improve piston detection efficiency, and ensure safety.

Another object of the present invention is to provide a method for detecting a piston detection defect, using the above-mentioned piston detection defect detection device for detection. Therefore, the method can solve the problems of low detection accuracy and slow detection speed in the prior art, improve the piston detection efficiency, and ensure safety.

Embodiments of the present invention are implemented as follows:

A piston detection defect detection device, comprising:

a rotating mechanism, the rotating mechanism includes a rotating platform and a driving assembly, the rotating platform is used to install the piston, and the driving assembly is used to drive the piston to rotate or be stationary in the horizontal direction;

Sensing mechanism, the sensing mechanism is arranged adjacent to the piston, and the sensing mechanism includes a line laser range finder and a range finder direction motor, the range finder direction motor is connected with the line laser range finder, and the range finder direction motor is configured To drive the line laser rangefinder to move to collect distance information at different positions of the piston;

a coordinate mechanism, the coordinate mechanism is connected with the sensing mechanism, and is used to drive the sensing mechanism to move along the X-axis, the Y-axis or the Z-axis in the XYZ three-dimensional coordinate system;

A control mechanism, the control mechanism is electrically connected with the rotation mechanism, the sensing mechanism and the coordinate mechanism, and the control mechanism is configured to control the coordinate mechanism to drive the sensing mechanism to move along the X axis, the Y axis or the Z axis, and according to the moved line laser The distance information collected by the rangefinder is converted into coordinate information to detect the defects of the piston.

Further, in a preferred embodiment of the present invention, the drive assembly includes a first motor and a rotating shaft, the first motor is drive-connected to the rotating shaft, and the first motor is used to drive the rotating shaft to rotate, so as to drive the piston in the horizontal direction with the rotating shaft as the center Shaft turns.

Further, in a preferred embodiment of the present invention, the drive assembly further comprises a clamp, the first end of the rotating shaft is drivingly connected with the first motor, the second end of the rotating shaft is fixedly connected with the clamp, and the clamp is used to install the piston;

The first motor is configured to drive the rotating shaft to rotate, so as to drive the clamp carrying piston to rotate with the rotating shaft as the central axis in the horizontal direction.

Further, in a preferred embodiment of the present invention, the clamp is an internal expansion clamp.

Further, in a preferred embodiment of the present invention, the coordinate mechanism includes a first mechanism body, a second mechanism body and a third mechanism body extending along the X-axis, Y-axis and Z-axis of the XYZ three-dimensional coordinate system, respectively. A mechanism body and the second mechanism body are on the horizontal plane, the third mechanism body is perpendicular to the horizontal plane, the first end of the first mechanism body and the second mechanism body are vertically arranged, and the second end of the first mechanism body and the third mechanism body Vertically arranged, the third mechanism body is fixedly connected with the sensing mechanism;

The coordinate mechanism further includes a second motor, a third motor and a fourth motor. The second motor is drivingly connected with the second mechanism body for driving the second mechanism body to move along the Y axis, and the third motor is drivingly connected with the first mechanism body, It is used for driving the first mechanism body to move along the X-axis, and the fourth motor is in driving connection with the third mechanism body, and is used for driving the third mechanism body to move along the Z-axis.

Further, in a preferred embodiment of the present invention, the first mechanism body, the second mechanism body and the third mechanism body are all lead screws.

Further, in a preferred embodiment of the present invention, the control mechanism includes a first controller, a second controller, a third controller and a data processing controller, the first controller is used to control the first motor, and the second controller is used to control the first motor. To control the second motor, the third motor and the fourth motor, the third controller is used to control the direction motor of the rangefinder, and the data processing controller is used to convert the distance information collected by the moving line laser rangefinder into coordinate information to detect Defects of the piston.

A piston detection defect detection method uses the above-mentioned piston detection defect detection device for detection.

Further, in a preferred embodiment of the present invention, the piston detection defect detection method includes:

Use the control mechanism to control the driving component of the rotating mechanism to drive the piston to be stationary or to rotate;

Use the control mechanism to control the coordinate mechanism to drive the sensing mechanism to move along the X-axis, Y-axis or Z-axis in the XYZ three-dimensional coordinate system to reach multiple stations;

Use the control mechanism to control the rangefinder direction motor of the sensing mechanism to drive the line laser rangefinder to detect the distance information of the piston at multiple stations, and convert the distance information collected by the moved line laser rangefinder into coordinate information to Detect piston defects.

Further, in a preferred embodiment of the present invention, it specifically includes:

The drive assembly is stationary so that the piston is stationary relative to the rotating platform;

The coordinate mechanism drives the sensing mechanism to move along the X axis, the Y axis or the Z axis in the XYZ three-dimensional coordinate system to reach the first station, so that the line laser rangefinder moves to the top surface where the laser surface is perpendicular to the piston;

The coordinate mechanism continues to drive the sensing mechanism to move on the top surface of the piston, and the distance information after the movement is measured by the line laser range finder, and the distance information is converted into coordinate information to detect the shape and position defects of the top surface of the piston;

or,

The driving component drives the piston to rotate at a constant speed in the horizontal direction;

The coordinate mechanism drives the sensing mechanism to move along the X-axis, Y-axis or Z-axis in the XYZ three-dimensional coordinate system to reach the second station, so that the line laser rangefinder moves to the diagonally above the piston, and the laser surface is at a 45-degree angle Irradiate on the edge where the top surface of the piston meets the cylinder surface;

The distance information is measured by the line laser distance meter, and the distance information is converted into coordinate information to detect the intersection angle between the top surface of the piston and the cylinder surface;

or,

The driving component drives the piston to rotate at a constant speed in the horizontal direction;

The coordinate mechanism drives the sensing mechanism to move along the X-axis, Y-axis or Z-axis in the XYZ three-dimensional coordinate system to reach the third station, so that the line laser rangefinder moves to the side of the piston, and the laser surface is irradiated on the cylinder of the piston surface, and the laser surface forms a laser line on the cylinder surface of the piston parallel to the generatrix of the cylinder surface of the piston;

The distance information is measured by a line laser distance meter, and the distance information is converted into coordinate information to detect the ring groove and coaxiality shape and position information of the piston.

The embodiments of the present invention have at least the following advantages or beneficial effects:

An embodiment of the present invention provides a piston detection defect detection device, which includes a rotation mechanism, a sensing mechanism, a coordinate mechanism, and a control mechanism. Wherein, the rotating mechanism includes a rotating platform and a driving assembly, the rotating platform is used to install the piston, and the driving assembly is used to drive the piston to rotate or be stationary in the horizontal direction; the sensing mechanism is arranged adjacent to the piston, and the sensing mechanism includes a line laser The distance meter and the distance meter direction motor, the distance meter direction motor is connected with the line laser distance meter, and the distance meter direction motor is configured to drive the line laser distance meter to move, so as to collect the distance information at different positions of the piston; The coordinate mechanism is connected with the sensing mechanism, and is used to drive the sensing mechanism to move along the X-axis, Y-axis or Z-axis in the XYZ three-dimensional coordinate system; the control mechanism is electrically connected with the rotating mechanism, the sensing mechanism and the coordinate mechanism , and the control mechanism is configured to control the coordinate mechanism to drive the sensing mechanism to move along the X-axis, Y-axis or Z-axis, and convert the distance information collected by the moved line laser rangefinder into coordinate information to detect the defect of the piston. Through the synergy of the rotating mechanism, the sensing mechanism, the coordinate mechanism and the control mechanism, the device can solve the problems of low detection accuracy and slow detection speed in the prior art, improve the piston detection efficiency and ensure safety.

The piston detection defect detection method provided by the embodiment of the present invention utilizes the above-mentioned piston detection defect detection device for detection. Therefore, the method can solve the problems of low detection accuracy and slow detection speed in the prior art, improve the piston detection efficiency, and ensure safety.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic structural diagram 1 of a piston detection defect detection device provided by an embodiment of the present invention;

FIG. 2 is a second structural schematic diagram of a piston detection defect detection device provided by an embodiment of the present invention;

3 is a schematic diagram of an exploded structure of a rotating mechanism provided by an embodiment of the present invention;

FIG. 4 is a schematic partial structure diagram of the piston detection defect detection device provided by the embodiment of the present invention during detection;

5 is a schematic structural diagram of a station state of a piston detection defect detection device provided by an embodiment of the present invention;

6 is a schematic diagram of coordinate data collection of a piston detection defect detection device provided by an embodiment of the present invention;

FIG. 7 is a schematic flowchart of a piston detection defect detection method provided by an embodiment of the present invention.

Icon: 100-piston detection defect detection device; 101-rotation mechanism; 103-sensing mechanism; 105-coordinate mechanism; 107-rotating platform; 109-drive assembly; 111-line laser rangefinder; 113-rangefinder direction Motor; 115-first motor; 117-rotating shaft; 119-clamp; 121-first mechanism body; 123-second mechanism body; 125-third mechanism body; 127-second motor; 129-third motor; 131 - fourth motor; 133 - first controller; 135 - second controller; 137 - third controller; 139 - data processing controller; 141 - ring groove; 143 - piston; 145 - top circle.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The azimuth or positional relationship indicated by "" etc. is based on the azimuth or positional relationship shown in the attached drawings, or the azimuth or positional relationship that the product of the invention is usually placed in use, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arranged", "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed The connection can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the present invention, unless otherwise expressly specified and limited, the first feature above or below the second feature may include the first and second features in direct contact, or may include the first and second features that are not in direct contact with each other. through additional characteristic contact between them. Also, the first feature being above, above and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is below, below and below the second feature includes the first feature is directly below and obliquely above the second feature, or simply means that the first feature level is smaller than the second feature.

FIG. 1 is a first schematic structural diagram of a piston detection defect detection apparatus 100 provided in this embodiment; FIG. 2 is a second structural schematic diagram of the piston detection defect detection apparatus 100 provided in this embodiment. Referring to FIG. 1 and FIG. 2 , this embodiment provides a piston detection defect detection device 100 , which includes a rotation mechanism 101 , a sensing mechanism 103 , a coordinate mechanism 105 and a control mechanism.

In detail, please refer to FIG. 1 and FIG. 2 again. In this embodiment, the rotating mechanism 101 includes a rotating platform 107 and a driving assembly 109. The rotating platform 107 is used to install the piston 143, and the driving assembly 109 is used to drive the piston 143 in the horizontal direction. Optionally rotating or stationary. Through the setting of the rotating mechanism 101, the piston 143 can be rotated to the required station in the horizontal direction, or can be stationary, so that multiple parts of the piston 143 can be detected by the sensing mechanism 103, thereby greatly improving the detection Quality, precision and efficiency.

For details, please refer to FIG. 1 and FIG. 2 again. In this embodiment, the sensing mechanism 103 is disposed adjacent to the piston 143 , and the sensing mechanism 103 includes a line laser rangefinder 111 and a rangefinder direction motor 113 . The meter direction motor 113 is connected to the line laser rangefinder 111 in a driving manner, and the distance meter direction motor 113 is configured to drive the line laser rangefinder 111 to move, so as to collect distance information at different positions of the piston 143 . Through the arrangement of the line laser rangefinder 111 and the rangefinder direction motor 113 , the distance information at each position of the piston 143 can be collected, thereby improving the detection efficiency and accuracy.

For details, please refer to FIG. 1 and FIG. 2 again. In this embodiment, the coordinate mechanism 105 is connected to the sensing mechanism 103, and is used to drive the sensing mechanism 103 along the X axis, Y axis in the XYZ three-dimensional coordinate system. axis or Z axis movement. The control mechanism is electrically connected to the rotation mechanism 101, the sensing mechanism 103 and the coordinate mechanism 105, and the control mechanism is configured to control the coordinate mechanism 105 to drive the sensing mechanism 103 to move along the X axis, the Y axis or the Z axis, and according to the moved The distance information collected by the line laser rangefinder 111 is converted into coordinate information to detect the defect of the piston 143 . Through the synergy of the rotating mechanism 101, the sensing mechanism 103, the coordinate mechanism 105 and the control mechanism, the device can solve the problems of low detection accuracy and slow detection speed in the prior art, improve the detection efficiency of the piston 143, and ensure safety sex.

FIG. 3 is a schematic diagram of an exploded structure of the rotating mechanism 101 provided in this embodiment. Referring to FIGS. 1 to 3 , in this embodiment, the driving assembly 109 includes a first motor 115 and a rotating shaft 117 , the first motor 115 is drivingly connected to the rotating shaft 117 , and the first motor 115 is used to drive the rotating shaft 117 to rotate to drive the piston 143 rotates in the horizontal direction with the rotation shaft 117 as the central axis. Through the driving of the first motor 115, the rotating shaft 117 can be effectively driven to rotate, thereby driving the piston 143 to rotate in the horizontal direction, so that the laser range finder can be irradiated to each position of the piston 143, thereby ensuring the accuracy of the final detection structure . Of course, in other embodiments of the present invention, the type of the driving assembly 109 can also be selected according to requirements, which is not limited by the embodiments of the present invention.

As a preferred solution, in this embodiment, the drive assembly 109 further includes a clamp 119, the first end of the rotating shaft 117 is drivingly connected to the first motor 115, the second end of the rotating shaft 117 is fixedly connected to the clamp 119, and the clamp 119 is used for installation Piston 143; The first motor 115 is configured to drive the rotation shaft 117 to rotate, so as to drive the clamp 119 to carry the piston 143 to rotate with the rotation shaft 117 as the central axis in the horizontal direction. The setting of the clamp 119 greatly improves the stability of the piston 143 during the movement process, thereby ensuring the detection accuracy and quality.

Further preferably, in this embodiment, the clamp 119 is an internal expansion clamp 119 . The inner expansion clamp 119 can provide stable and effective clamping force. Of course, in other embodiments of the present invention, the types of the clamps 119 may also be selected according to requirements, which are not limited in the embodiments of the present invention.

Please refer to FIGS. 1 to 3 again. In this embodiment, the coordinate mechanism 105 includes a first mechanism body 121 , a second mechanism body 123 and a first mechanism body 121 , a second mechanism body 123 and a first mechanism body 121 extending along the X axis, the Y axis and the Z axis of the XYZ three-dimensional coordinate system, respectively. Three mechanism bodies 125 , the first mechanism body 121 and the second mechanism body 123 are on the horizontal plane, the third mechanism body 125 is perpendicular to the horizontal plane, and the first end of the first mechanism body 121 is perpendicular to the second mechanism body 123 , and the first mechanism body 121 is perpendicular to the second mechanism body 123 . The second end of the mechanism body 121 is vertically arranged with the third mechanism body 125, and the third mechanism body 125 is fixedly connected with the sensing mechanism 103; the coordinate mechanism 105 also includes a second motor 127, a third motor 129 and a fourth motor 131. The second motor 127 is drivingly connected with the second mechanism body 123 for driving the second mechanism body 123 to move along the Y axis, and the third motor 129 is drivingly connected with the first mechanism body 121 for driving the first mechanism body 121 to move along the X axis , the fourth motor 131 is in driving connection with the third mechanism body 125 for driving the third mechanism body 125 to move along the Z axis. The second motor 127 , the third motor 129 and the fourth motor 131 are all high-speed stepping motors. Through the setting of the coordinate mechanism 105 , the sensing mechanism 103 can move along the X-axis, the Y-axis and the Z-axis, so as to realize Detection of defects at various positions of the piston 143 .

As a preferred solution, in this embodiment, the first mechanism body 121 , the second mechanism body 123 and the third mechanism body 125 are all lead screws. The motor drives the lead screw to perform linear motion, which can drive the sensing mechanism 103 to move along the X-axis, the Y-axis or the Z-axis, so as to meet the detection requirements at various positions.

Please refer to FIGS. 1 to 3 again. In this embodiment, the control mechanism includes a first controller 133 , a second controller 135 , a third controller 137 and a data processing controller 139 . The first controller 133 is used for Control the first motor 115, the second controller 135 is used to control the second motor 127, the third motor 129 and the fourth motor 131, the third controller 137 is used to control the rangefinder direction motor 113, and the data processing controller 139 is used for The distance information collected by the moved line laser rangefinder 111 is converted into coordinate information to detect the defect of the piston 143 . During detection, the sensing mechanism 103 , the rotation mechanism 101 , and the coordinate mechanism 105 can be controlled by the control mechanism, so as to meet the measurement requirements of each position.

FIG. 4 is a schematic partial structure diagram of the piston detection defect detection device 100 provided by the embodiment of the present invention during detection; FIG. 5 is a schematic structural diagram of the working position of the piston detection defect detection device 100 provided by the present embodiment; A schematic diagram of coordinate data collection of the piston detection defect detection device 100 provided by the embodiment; FIG. 7 is a schematic flowchart of the piston 143 detection defect detection method provided by the embodiment. Referring to FIG. 4 to FIG. 7 , an embodiment of the present invention further provides a method for detecting defects in piston 143 , and the method uses the above-mentioned piston detection defect detection device 100 for detection. Therefore, the method can solve the problems of low detection accuracy and slow detection speed in the prior art, improve the detection efficiency of the piston 143 and ensure safety.

In detail, the method includes the following steps:

S1: use the control mechanism to control the driving component 109 of the rotating mechanism 101 to drive the piston 143 to be stationary or to rotate;

S2: use the control mechanism to control the coordinate mechanism 105 to drive the sensing mechanism 103 to move along the X-axis, Y-axis or Z-axis in the XYZ three-dimensional coordinate system to reach multiple stations;

S3: Use the control mechanism to control the range finder direction motor 113 of the sensing mechanism 103 to drive the line laser range finder 111 to detect the distance information of the piston 143 at multiple stations, and according to the distance information collected by the moved line laser range finder 111 The distance information is converted into coordinate information to detect the defect of the piston 143 .

Specifically, please refer to FIG. 2 , FIG. 5 and FIG. 6 , in this embodiment, the method may specifically include: the driving assembly 109 is stationary, so that the piston 143 is stationary relative to the rotating platform 107 ; the coordinate mechanism 105 drives the sensing mechanism 103 to be stationary In the XYZ three-dimensional coordinate system, move along the X-axis, Y-axis or Z-axis to reach the first station, so that the line laser range finder 111 moves to the top surface where the laser surface is perpendicular to the piston 143; the coordinate mechanism 105 continues to drive the sensing mechanism 103 The top surface of the piston 143 is moved, and the distance information after the movement is measured by the line laser rangefinder 111 , and the distance information is converted into coordinate information to detect the shape and position defects of the top surface circle 145 of the piston 143 .

Wherein, when the piston detection defect detection device 100 is in the first station, the clamp 119 clamps the piston 143 and stabilizes it, the first motor 115 remains stationary, the coordinate mechanism 105 drives the sensing mechanism 103 to move to the top surface of the piston 143, and the third control The controller 137 controls the rangefinder direction motor 113 to drive the line laser rangefinder 111 to rotate until the laser surface is perpendicular to the top surface of the piston 143 . The coordinate mechanism 105 returns to zero, the third motor 129 drives the sensing mechanism 103 to step along the X axis, after the third motor 129 completes the stepping, the second motor 127 drives the sensing mechanism 103 to step further along the Y axis, and the third motor 129 drives The sensing mechanism 103 steps in the negative direction of the X-axis. After the stepping is completed, the second motor 127 drives the sensing mechanism 103 to step in the Y-axis direction. In turn, the stepping area of the sensing mechanism 103 covers the top surface of the piston 143. The processing controller 139 collects signals at each step of the stepping motor, converts the distance data into coordinate data, and performs the detection of shape and position defects such as the outer diameter of the top surface of the piston 143 and the diameter of the combustion chamber.

Specifically, referring to FIG. 5, in this embodiment, the method may specifically include:

The driving assembly 109 drives the piston 143 to rotate at a constant speed in the horizontal direction;

The coordinate mechanism 105 drives the sensing mechanism 103 to move along the X-axis, Y-axis or Z-axis in the XYZ three-dimensional coordinate system to reach the second station, so that the line laser rangefinder 111 moves to the obliquely above the piston 143, and makes the laser surface Irradiate on the edge where the top surface of the piston 143 meets the cylinder surface at an angle of 45 degrees;

The distance information is measured by the line laser range finder 111, and the distance information is converted into coordinate information to detect the intersection angle between the top surface of the piston 143 and the cylinder surface.

Wherein, when the piston detection defect detection device 100 is in the second station, the clamp 119 clamps the piston 143, the first motor 115 keeps rotating, the coordinate mechanism 105 drives the sensing mechanism 103 to move diagonally above the piston 143, and the third controller 137 Control the rangefinder direction motor 113 to drive the line laser rangefinder 111, so that the laser surface emitted by the line laser rangefinder 111 is irradiated on the intersection edge of the top surface of the piston 143 and the cylinder surface at an angle of 45°, and the data processing controller 139 calculates The angle between the top surface of the piston 143 and the cylinder surface is sufficient.

Specifically, please refer to FIG. 1, FIG. 4 to FIG. 6, in this embodiment, the method may specifically include:

The driving assembly 109 drives the piston 143 to rotate at a constant speed in the horizontal direction;

The coordinate mechanism 105 drives the sensing mechanism 103 to move along the X-axis, Y-axis or Z-axis in the XYZ three-dimensional coordinate system to reach the third station, so that the line laser range finder 111 moves to the side of the piston 143, and the laser surface is irradiated On the cylindrical surface of the piston 143, and the laser surface forms a laser line on the cylindrical surface of the piston 143 parallel to the generatrix of the cylindrical surface of the piston 143;

The distance information is measured by the line laser distance meter 111, and the distance information is converted into coordinate information to detect the ring groove 141 of the piston 143 and the coaxiality, shape and position information.

Wherein, when the piston detection defect detection device 100 is in the third station, the clamp 119 clamps the piston 143, the first motor 115 keeps rotating, the coordinate mechanism 105 drives the sensing mechanism 103 to move to the side of the piston 143, and the third controller 137 Control the rangefinder direction motor 113 to drive the line laser rangefinder 111 to rotate so that the laser surface shines on the cylinder surface of the piston 143, so that the laser surface forms a laser line on the cylinder surface of the piston 143 and is parallel to the generatrix of the cylinder surface of the piston 143, data processing control The device 139 converts the distance signal of the line laser rangefinder 111 into shape and position signals such as the width of the annular groove 141 of the piston 143, the depth of the annular groove 141, the bottom runout of the annular groove 141 and the coaxiality.

To sum up, the piston detection defect detection device 100 provided by the embodiments of the present invention can solve the problems of low detection accuracy and slow detection speed in the prior art, improve the detection efficiency of the piston 143 and ensure safety.

The piston 143 detection defect detection method provided by the embodiment of the present invention utilizes the above-mentioned piston detection defect detection device 100 for detection. Therefore, the method can solve the problems of low detection accuracy and slow detection speed in the prior art, improve the detection efficiency of the piston 143 and ensure safety.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A piston defect detecting apparatus, comprising:

the piston driving device comprises a rotating mechanism and a driving mechanism, wherein the rotating mechanism comprises a rotating platform and a driving assembly, the rotating platform is used for mounting a piston, and the driving assembly is used for driving the piston to rotate and stand in the horizontal direction;

the sensing mechanism is arranged adjacent to the piston and comprises a line laser range finder and a range finder direction motor, the range finder direction motor is in transmission connection with the line laser range finder, and the range finder direction motor is configured to drive the line laser range finder to move so as to collect distance information of the piston at different positions;

the coordinate mechanism is connected with the sensing mechanism and is used for driving the sensing mechanism to move along an X axis, a Y axis and a Z axis in an XYZ three-dimensional coordinate system; the coordinate mechanism drives the sensing mechanism to move to the top surface of the piston, and the range finder direction motor drives the line laser range finder to rotate until a laser plane is perpendicular to the top surface of the piston; the coordinate mechanism drives the sensing mechanism to move to the position obliquely above the piston, and the range finder direction motor drives the line laser range finder to move so that the laser surface of the line laser range finder irradiates the edge of the top surface of the piston, which is intersected with the cylindrical surface, at an angle of 45 degrees; the coordinate mechanism drives the sensing mechanism to move to the side face of the piston, the range finder direction motor drives the line laser range finder to rotate so that a laser surface irradiates on the cylindrical surface of the piston, and the laser surface of the line laser range finder forms a laser line on the cylindrical surface of the piston and is parallel to a bus of the cylindrical surface of the piston;

the control mechanism is electrically connected with the rotating mechanism, the sensing mechanism and the coordinate mechanism, and is configured to control the coordinate mechanism to drive the sensing mechanism to move along the X axis, the Y axis and the Z axis, and the distance information collected by the line laser distance meter after the movement is converted into coordinate information to detect the defects of the piston.

2. The piston defect detecting apparatus according to claim 1, wherein:

the drive assembly comprises a first motor and a rotating shaft, the first motor is in transmission connection with the rotating shaft, and the first motor is used for driving the rotating shaft to rotate so as to drive the piston to rotate by taking the rotating shaft as a central shaft in the horizontal direction.

3. The piston defect detecting apparatus according to claim 2, wherein:

the driving assembly further comprises a clamp, a first end of the rotating shaft is in transmission connection with the first motor, a second end of the rotating shaft is fixedly connected with the clamp, and the clamp is used for mounting the piston;

the first motor is configured to drive the rotating shaft to rotate so as to drive the clamp to carry the piston to rotate in the horizontal direction by taking the rotating shaft as a central shaft.

4. The piston defect detecting apparatus according to claim 3, wherein:

the clamp is an internal expansion type clamp.

5. The piston defect detecting apparatus according to claim 2, wherein:

the coordinate mechanism comprises a first mechanism body, a second mechanism body and a third mechanism body which are respectively arranged along the X axis, the Y axis and the Z axis of the XYZ three-dimensional coordinate system in an extending manner, the first mechanism body and the second mechanism body are on a horizontal plane, the third mechanism body is vertical to the horizontal plane, a first end of the first mechanism body is vertical to the second mechanism body, a second end of the first mechanism body is vertical to the third mechanism body, and the third mechanism body is fixedly connected with the sensing mechanism;

the coordinate mechanism further comprises a second motor, a third motor and a fourth motor, the second motor is in transmission connection with the second mechanism body and used for driving the second mechanism body to move along the Y axis, the third motor is in transmission connection with the first mechanism body and used for driving the first mechanism body to move along the X axis, and the fourth motor is in transmission connection with the third mechanism body and used for driving the third mechanism body to move along the Z axis.

6. The piston defect detecting apparatus according to claim 5, wherein:

the first mechanism body, the second mechanism body and the third mechanism body are all lead screws.

7. The piston defect detecting apparatus according to claim 5, wherein:

the control mechanism comprises a first controller, a second controller, a third controller and a data processing controller, the first controller is used for controlling the first motor, the second controller is used for controlling the second motor, the third motor and the fourth motor, the third controller is used for controlling the direction motor of the range finder, and the data processing controller is used for converting distance information collected by the line laser range finder after moving into coordinate information so as to detect the defects of the piston.

8. A piston defect detection method is characterized in that:

the piston defect detection method is used for detection by using the piston defect detection device of any one of claims 1 to 7.

9. The piston defect detecting method according to claim 8, comprising:

the control mechanism is used for controlling a driving assembly of the rotating mechanism to drive the piston to be static and rotate;

controlling a coordinate mechanism with the control mechanism to drive the sensing mechanism to move along the X-axis, Y-axis, and Z-axis in the XYZ three-dimensional coordinate system to reach a plurality of stations;

and the control mechanism is used for controlling the range finder direction motor of the sensing mechanism to drive the linear laser range finder to detect the distance information of the piston on a plurality of stations, and the distance information is converted into coordinate information according to the distance information collected by the linear laser range finder to detect the defect of the piston.

10. The piston defect detection method according to claim 9, specifically comprising:

the drive assembly is stationary such that the piston is stationary relative to the rotating platform;

the coordinate mechanism drives the sensing mechanism to move along the X axis, the Y axis and the Z axis in the XYZ three-dimensional coordinate system to reach a first station, so that the line laser distance meter moves to a position where a laser plane is perpendicular to the top surface of the piston;

the coordinate mechanism continuously drives the sensing mechanism to move on the top surface of the piston, the moved distance information is measured through the line laser distance meter, and the distance information is converted into coordinate information to detect the top surface form and position defects of the piston;

and the number of the first and second groups,

the driving assembly drives the piston to rotate at a constant speed in the horizontal direction;

the coordinate mechanism drives the sensing mechanism to move along the X axis, the Y axis and the Z axis in the XYZ three-dimensional coordinate system to reach a second station, so that the line laser distance measuring instrument moves to the position obliquely above the piston, and the laser surface irradiates the edge, where the top surface of the piston intersects with the cylindrical surface, at an angle of 45 degrees;

measuring distance information through the line laser distance measuring instrument, and converting the distance information into coordinate information to detect an intersection angle of the top surface of the piston and the cylindrical surface;

and the number of the first and second groups,

the driving assembly drives the piston to rotate at a constant speed in the horizontal direction;

the coordinate mechanism drives the sensing mechanism to move along the X axis, the Y axis and the Z axis in the XYZ three-dimensional coordinate system to reach a third station, so that the line laser range finder moves to the side face of the piston, a laser surface irradiates on the cylindrical surface of the piston, and the laser surface forms a laser line on the cylindrical surface of the piston to be parallel to a generatrix of the cylindrical surface of the piston;

and measuring distance information through the line laser range finder, and converting the distance information into coordinate information to detect the ring groove and coaxiality form and position information of the piston.

Images