CN110006401A - A kind of piston ring cell wall gradient detection device and method - Google Patents

Abstract

The invention relates to the field of piston detection shape and position detection, in particular to a piston ring groove wall inclination detection device and method. The device includes a rotation mechanism, a detection 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 at a constant speed in the horizontal direction; the detection mechanism includes a light source and a photosensitive panel, and the light beam emitted by the light source is arranged parallel to the horizontal direction and illuminates the direction. The piston, the photosensitive panel is arranged adjacent to the piston and extends along the direction perpendicular to the horizontal direction, and the detection mechanism is configured to enable the piston to form an image on the photosensitive panel under the illumination of the light source; the control mechanism, the rotation mechanism and the detection mechanism are all electrically connected. connected, and the control mechanism is configured to calculate the inclination of the ring groove wall of the piston according to the image formed on the photosensitive panel. The device can quickly calculate the inclination of the ring groove wall of the piston, shorten the detection time, and at the same time improve the stability and safety of the piston detection.

Description

A device and method for detecting the inclination of a piston ring groove wall

technical field

The invention relates to the field of piston detection shape and position detection, in particular to a piston ring groove wall inclination detection device and method.

Background technique

Piston is one of the important components of automobile engine, and its machining accuracy determines the performance of internal combustion engine. Therefore, piston quality inspection is very important in piston manufacturing.

The traditional piston ring groove wall inclination detection device is a contact detection. The detection head is placed on the piston ring groove wall. The stepper motor drives the detection head to move on the ring groove wall to sense the shape and position changes of the ring groove wall, and then Measure the inclination to the wall of the ring groove. Due to the contact detection, the probe is easy to wear, and the probe needs to be replaced frequently. At the same time, the probe after long-term wear will cause secondary damage such as scratches to the piston ring groove wall. The obtained piston ring groove wall inclination detection data is more accurate. Low, safety and stability.

Therefore, a new type of detection device needs to be designed to solve the above problems.

SUMMARY OF THE INVENTION

In order to make up for the shortcomings of the prior art, such as slow detection speed, low detection data accuracy, and easy damage to the detection head, the invention provides a piston ring groove wall inclination detection device, which can effectively shorten the detection time and improve the detection efficiency. At the same time, the stability and safety of piston detection are improved.

The present invention is achieved through the following technical solutions:

A piston ring groove wall inclination detection device, comprising a rotation mechanism, a detection mechanism and a control mechanism, characterized in that:

The rotating mechanism includes a rotating platform and a driving assembly; the rotating platform is used to install the piston; the driving assembly is used to drive the piston to rotate at a constant speed in the horizontal direction;

The detection mechanism includes a light source and a photosensitive panel; the light beam emitted by the light source is arranged parallel to the horizontal direction and illuminates the piston; the photosensitive panel is arranged adjacent to the piston and extends in a direction perpendicular to the horizontal direction; the detection mechanism is configured to allow the piston to form an image on the photosensitive panel when illuminated by a light source;

The control mechanism is electrically connected with the rotation mechanism and the detection mechanism, and the control mechanism is configured to calculate the inclination of the ring groove wall of the piston according to the image formed on the photosensitive panel.

Further, in order to better realize the present invention, the drive assembly includes a motor and a rotating shaft, the rotating shaft is drivingly connected with the motor, and the rotating shaft is used to drive the piston to rotate at a constant speed in the horizontal direction with the rotating shaft as the central axis.

Further, in order to better realize the present invention, the drive assembly further includes a clamp; one end of the rotating shaft is drivingly connected to the motor, and the other end of the rotating shaft is fixedly connected to a clamp, and the clamp is used to install a piston; the The motor is configured to drive the rotating shaft to rotate, so as to drive the clamp carrying piston to rotate at a constant speed with the rotating shaft as the central axis in the horizontal direction.

Further, in order to better realize the present invention, the clamp is an internal expansion clamp.

Further, in order to better realize the present invention, the control mechanism includes a first signal acquisition module and a processing module; the first signal acquisition module is electrically connected to the detection mechanism, and is used to acquire images of images formed on the photosensitive panel information; the processing module is electrically connected with the first signal acquisition module, and is used for calculating the inclination of the ring groove wall of the piston according to the image information.

Further, in order to better realize the present invention, the piston ring groove wall inclination detection device further includes a balance mechanism, and the balance mechanism includes a first balance module and a second balance module, and the first balance module is arranged in the detection In the mechanism, the levelness of the ring groove of the piston is detected; the control mechanism is electrically connected to both the first balance module and the second balance module, and the processing module is configured to detect when the first balance module and the second balance module are detected. When the difference between the obtained levels is zero, the first signal acquisition module is controlled to acquire image information of the image formed on the photosensitive panel.

Further, in order to better realize the present invention, both the first balance module and the second balance module are level.

Further, in order to better realize the present invention, the control mechanism further includes a second signal acquisition module and a third signal acquisition module, the second signal acquisition module is used to collect the level of the first balance module, the The three-signal acquisition module is used to acquire the level of the second balance module; the processing module is configured to control the first signal when the difference between the levels acquired by the second signal acquisition module and the third signal acquisition module is zero The acquisition module acquires image information of the image formed on the photosensitive panel.

A method for detecting the inclination of a piston ring groove wall, using the above-mentioned piston ring groove wall inclination detection device, characterized in that it comprises the following steps:

S1, the control mechanism controls the rotating mechanism to drive the piston to rotate at a constant speed in the horizontal direction;

S2, the control mechanism controls the light source of the detection mechanism to illuminate the piston vertically, and forms an image on the photosensitive panel;

S3, the processing module calculates the inclination of the ring groove wall of the piston according to the image formed on the photosensitive panel.

The beneficial effects of the present invention are: through the cooperation between various mechanisms, the present invention can quickly calculate the inclination of the ring groove wall of the piston according to the image formed on the photosensitive panel, shorten the detection time, improve the stability and safety of the piston detection, thereby The problems such as slow detection speed, low detection data accuracy, and easy damage to the detection head in the prior art can be avoided. The method of the present invention utilizes the above-mentioned piston ring groove wall inclination detection device for detection. Therefore, the method can effectively shorten the detection time, improve the detection efficiency, and at the same time improve the stability and safety of piston detection.

Description of drawings

Fig. 1 is the structural schematic diagram of the piston ring groove wall inclination detection device of the present invention;

Fig. 2 is the partial structure schematic diagram of the piston ring groove wall inclination detection device of the present invention;

3 is a schematic structural diagram of a photosensitive panel of the piston ring groove wall inclination detection device of the present invention;

FIG. 4 is a schematic flowchart of the method for detecting the inclination of the piston ring groove wall according to the present invention.

In the figure, 100, piston ring groove wall inclination detection device, 101, rotating mechanism, 103, detection mechanism, 105, control mechanism, 107, rotating platform, 109, drive assembly, 111, light source, 113, light column, 115, piston , 117, motor, 119, shaft, 121, fixture, 123, first signal acquisition module, 125, second signal acquisition module, 127, third signal acquisition module, 131, first balance module, 133, second balance module , 135, ring groove, 137, photosensitive panel, 139, processing module.

Detailed ways

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 are only some, but not all, embodiments of the present invention. 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 skilled in the art without creative work 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 present invention, it should be noted that the orientations or positional relationships indicated by the terms "middle", "upper", "lower", "horizontal", "inner", "outer", etc. are based on those shown in the accompanying drawings The orientation or positional relationship, or the orientation or positional relationship that the product of the invention is usually placed in use, is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, in order to simplify the description. The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention. Furthermore, the terms "first", "second", etc. are only used to differentiate the description and should not be construed to indicate or imply relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "arranged", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection connected, or integrally connected. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected 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.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and features in the embodiments may be combined with each other without conflict.

1 and 2 are a specific embodiment of the present invention, which provides a piston ring groove wall inclination detection device 100 , including a rotation mechanism 101 , a detection mechanism 103 and a control mechanism 105 .

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 115, and the driving assembly 109 is used to drive the piston 115 to rotate at a constant speed in the horizontal direction. Through the setting of the rotation mechanism 101, the piston 115 can be rotated in the horizontal direction, so that multiple parts of the piston 115 can be detected by the detection mechanism 103, thereby greatly improving the detection quality and accuracy.

FIG. 3 is a schematic structural diagram of the photosensitive panel 137 of the wall inclination detection device of the ring groove 135 of the piston 115 according to the present embodiment. As shown in FIGS. 1-3 , in this embodiment, the detection mechanism 103 includes a light source 111 and a photosensitive panel 137 . The light beam 113 emitted by the light source 111 is arranged parallel to the horizontal direction and illuminates the piston 115 , and can be irradiated onto the photosensitive panel 137 through the ring groove 135 of the piston 115 , so that an image can be formed on the photosensitive panel 137 . Specifically, the photosensitive panel 137 is disposed adjacent to the piston 115 and extends in a direction perpendicular to the horizontal direction. The detection mechanism 103 is configured to enable the piston 115 to form an image on the photosensitive panel 137 under the illumination of the light source 111 . The control mechanism 105 is electrically connected to both the rotation mechanism 101 and the detection mechanism 103 , and the control mechanism 105 is configured to calculate the wall inclination of the annular groove 135 of the piston 115 according to the image formed on the photosensitive panel 137 . Through the cooperation between the mechanisms, the inclination of the wall of the ring groove 135 of the piston 115 can be quickly calculated according to the image formed on the photosensitive panel 137, the detection time is shortened, the detection stability and safety of the piston 115 are improved, and the conventional technology can be avoided. Problems such as slow detection speed, low detection data accuracy, and easy damage to the detection head appear.

As a preferred solution, in this embodiment, the photosensitive panel 137 senses the dark edge projected by the annular groove 135 of the piston 115 , a coordinate system can be set on the photosensitive panel 137 , and the control mechanism 105 projects an image on the photosensitive panel 137 through the annular groove 135 of the piston 115 . The inclination of the wall of the plug ring groove 135 can be calculated.

1 and 2, in this embodiment, the drive assembly 109 includes a motor 117 and a rotating shaft 119, the rotating shaft 119 is drive-connected to the motor 117, and the rotating shaft 119 is used to drive the piston 115 to rotate at a constant speed in the horizontal direction with the rotating shaft 119 as the central axis . Driven by the motor 117, the shaft 119 can be effectively driven to rotate, thereby driving the piston 115 to rotate in the horizontal direction, so that the light source 111 can illuminate various positions of the ring groove 135 of the piston 115, 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 121 , the first end of the rotating shaft 119 is drivingly connected to the motor 117 , the second end of the rotating shaft 119 is fixedly connected to the clamp 121 , and the clamp 121 is used to install the piston 115 The motor 117 is configured to drive the shaft 119 to rotate, so as to drive the clamp 121 to carry the piston 115 to rotate at a constant speed with the shaft 119 as the central axis in the horizontal direction. The setting of the fixture 121 greatly improves the stability of the piston 115 during the movement, thereby ensuring the stability of the image formed after being irradiated by the light source 111, and thus ensuring the detection accuracy and quality.

Further, in this embodiment, the clamp 121 is an internal expansion clamp 121 . The inner expansion clamp 121 can provide stable and effective clamping force. Of course, in other embodiments of the present invention, the types of the clamps 121 may also be selected according to requirements, which are not limited in the embodiments of the present invention.

In this embodiment, the control mechanism 105 includes a first signal acquisition module 123 and a processing module 139. The first signal acquisition module 123 is electrically connected to the detection mechanism 103, and is used to acquire image information of an image formed on the photosensitive panel 137, and then process it. The module 139 is electrically connected to the first signal acquisition module 123 and is used to calculate the wall inclination of the annular groove 135 of the piston 115 according to the image information. Through the setting of the first signal acquisition module 123, the image information formed on the photosensitive panel 137 can be processed in time by the processing module 139, so that the inclination of the wall of the ring groove 135 of the piston 115 can be effectively detected, the detection time can be saved, and the detection efficiency can be improved. .

In this embodiment, the piston ring groove wall inclination detection device 100 further includes a balance mechanism. The balance mechanism includes a first balance module 131 and a second balance module 133. The first balance module 131 is disposed in the detection mechanism 103 and is used for detecting The level of the light beam 113 emitted by the light source 111, the second balance module 133 is disposed on the rotating platform 107, and is used to detect the level of the ring groove 135 of the piston 115; the control mechanism 105 and the first balance module 131 and the second balance module 133 are electrically connected, and the processing module 139 is configured to control the first signal acquisition module 123 to collect the image formed on the photosensitive panel 137 when the difference between the levels detected by the first balance module 131 and the second balance module 133 is zero. image information. Through the arrangement of the first balance module 131 and the second balance module 133, when the level of the light column 113 is consistent with the level of the ring groove 135, the inclination of the ring groove 135 of the piston 115 is calculated, thereby effectively improving the The detection accuracy ensures the accuracy of the final detected value.

As an optional solution, in this embodiment, both the first balance module 131 and the second balance module 133 are level. Of course, in other embodiments of the present invention, the first balance module 131 and the second balance module 133 are not limited to a level, but can also be other components or devices that can provide the same function, which are not limited in the embodiments of the present invention.

In this embodiment, the control mechanism 105 further includes a second signal acquisition module 125 and a third signal acquisition module 127. The second signal acquisition module 125 is used to acquire the level of the first balance module 131, and the third signal acquisition module 127 is used to acquire the level of the first balance module 131. for collecting the level of the second balance module 133; the processing module 139 is configured to control the first signal acquisition module 123 when the difference between the levels acquired by the second signal acquisition module 125 and the third signal acquisition module 127 is zero The image information of the image formed on the photosensitive panel 137 is collected, so as to quickly calculate the wall inclination of the ring groove 135 of the piston 115 according to the image formed on the photosensitive panel 137, shorten the detection time, improve the detection stability and safety of the piston 115, and further can The problems such as slow detection speed, low detection data precision, and easy damage of the detection head in the prior art are avoided.

FIG. 4 is a schematic flowchart of the method for detecting the wall inclination of the ring groove 135 of the piston 115 according to the present embodiment. A method for detecting the wall inclination of the ring groove 135 of the piston 115 is provided by using the above-mentioned piston ring groove wall inclination detection device 100 for detection. Therefore, the method can effectively shorten the detection time, improve the detection efficiency, and at the same time improve the detection stability and safety of the piston 115 . In detail, the method includes:

S1: The rotation mechanism 101 is controlled by the control mechanism 105 to drive the piston 115 to rotate at a constant speed in the horizontal direction;

S2: The light source 111 of the detection mechanism 103 is controlled by the control mechanism 105 to vertically illuminate the piston 115, and an image is formed on the photosensitive panel 137;

S3: Calculate the inclination of the wall of the annular groove 135 of the piston 115 according to the image formed on the photosensitive panel 137 .

Specifically, step S1 includes: the light source 111 emits a parallel light beam 113 through the wall of the ring groove 135 of the piston 115 to shine on the photosensitive panel 137, and the photosensitive panel 137 senses the dark edge image of the ring groove 135 of the piston 115, and calculates the ring of the piston 115 through the coordinate system Slot 135 wall inclination.

Specifically, step S2 includes: triggering the first signal collection module 123 to collect data according to the calculation of the difference between the level of the light beam 113 collected by the third signal collection module 127 and the level of the piston 115 ring groove 135 collected by the third signal collection module 127 Photosensitive panel 137 image signal.

The working principle of the piston ring groove wall inclination detection device 100 provided by the embodiment of the present invention is described below:

When detecting the inclination of the wall of the ring groove 135 of the piston 115, the piston 115 is fixed on the rotating platform 107 by the rotating shaft 119 and the clamp 121, and the motor 117 is controlled to drive the rotating shaft 119 to rotate, so that the piston 115 rotates at a constant speed along the central axis of the rotating shaft 119. At this time, the level of the detection beam 113 is detected by the first balance module 131, the level of the ring groove 135 is detected by the second balance module 133, and the level of the beam 113 is collected by the second signal acquisition module 125, and the third signal The acquisition module 127 acquires the levelness of the ring groove 135, and when the difference between the two is zero, the first signal acquisition module 123 is controlled to acquire the image information of the photosensitive panel 137, and the processing module 139 passes through the piston 115 and the ring groove 135 in the ring groove 135. The inclination of the wall of the ring groove 135 of the piston 115 is calculated from the imaging coordinates on the photosensitive panel 137 .

To sum up, the device 100 and the method for detecting the inclination of the piston ring groove wall provided by the embodiments of the present invention calculate the image of the piston 115 ring groove 135 on the photosensitive panel 137 by collecting the images of the piston 115 ring groove 135 and the light beam 113 parallel to the light beam 113 . The inclination of the ring groove 135 can solve the problems in the prior art, such as slow detection speed, low detection data accuracy, and easy wear of the detection head, and effectively improve the detection stability and safety of the piston 115 .

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention, as long as they do not depart from the spirit of the technical solutions of the present invention and The scope should be included in the scope of the claims of the present invention.

Claims (9)

1. A piston ring groove wall inclination detection device, comprising a rotation mechanism (101), a detection mechanism (103) and a control mechanism (105), characterized in that: The rotating mechanism (101) includes a rotating platform (107) and a driving assembly (109); the rotating platform (107) is used for installing the piston (115); the driving assembly (109) is used for driving the piston (115) in the Rotate at a constant speed in the horizontal direction; The detection mechanism (103) includes a light source (111) and a photosensitive panel (137); the light beam (113) emitted by the light source (111) is arranged parallel to the horizontal direction and illuminates the piston (115); the photosensitive panel (113) 137) disposed adjacent to the piston (115) and extending along a direction perpendicular to the horizontal direction; the detection mechanism (103) is configured to enable the piston (115) to form an image on the photosensitive panel under the illumination of a light source; The control mechanism (105) is electrically connected with the rotation mechanism (101) and the detection mechanism (103), and the control mechanism (105) is configured to calculate the inclination of the ring groove wall of the piston according to the image formed on the photosensitive panel (137). 2 . The device for detecting the inclination of the piston ring groove wall according to claim 1 , wherein the driving assembly ( 109 ) comprises a motor ( 117 ) and a rotating shaft ( 119 ), and the rotating shaft ( 119 ) is driven by the motor ( 117 ). 3 . connected, the rotating shaft (119) is used to drive the piston (115) to rotate at a constant speed with the rotating shaft (119) as the central axis in the horizontal direction. 3 . The device for detecting the inclination of the piston ring groove wall according to claim 2 , wherein the driving assembly ( 109 ) further comprises a clamp ( 121 ); one end of the rotating shaft ( 119 ) is connected to the motor ( 117 ). ) drive connection, the other end of the rotating shaft (119) is fixedly connected with the clamp (121), the clamp (121) is used to install the piston (115); the motor (117) is configured to drive the rotating shaft (119) to rotate, so as to The driving clamp (121) carries the piston (115) to rotate at a constant speed in the horizontal direction with the rotating shaft (119) as the central axis. 4 . The device for detecting the inclination of the piston ring groove wall according to claim 3 , wherein the clamp ( 121 ) is an internal expansion clamp. 5 . 5 . The device for detecting the inclination of the piston ring groove wall according to claim 1 , wherein the control mechanism ( 105 ) comprises a first signal acquisition module ( 123 ) and a processing module ( 139 ); the first signal The acquisition module (123) is electrically connected to the detection mechanism (103), and is used for acquiring image information of the image formed on the photosensitive panel (137); the processing module (139) is electrically connected to the first signal acquisition module (123), And it is used to calculate the inclination of the ring groove wall of the piston according to the image information. 6. The device for detecting the inclination of the piston ring groove wall according to claim 5, characterized in that: the device for detecting the inclination of the piston ring groove wall further comprises a balance mechanism, and the balance mechanism comprises a first balance module (131) and The second balance module (133), the first balance module (131) is arranged in the detection mechanism (103), and is used for detecting the levelness of the annular groove of the piston (115); the control mechanism (105) is connected with the first balance module (105). The balancing module (131) and the second balancing module (133) are both electrically connected, and the processing module (139) is configured so that when the difference in level detected by the first balancing module (131) and the second balancing module (133) is detected If the value is zero, the first signal acquisition module (123) is controlled to acquire image information of the image formed on the photosensitive panel (137). 7 . The device for detecting the inclination of the piston ring groove wall according to claim 6 , wherein the first balance module ( 131 ) and the second balance module ( 133 ) are both levels. 8 . 8 . The device for detecting the inclination of the piston ring groove wall according to claim 6 , wherein the control mechanism ( 105 ) further comprises a second signal acquisition module ( 125 ) and a third signal acquisition module ( 127 ), wherein the The second signal collection module (125) is used to collect the level of the first balance module (131), and the third signal collection module (127) is used to collect the level of the second balance module (133); the processing The module (139) is configured to control the first signal collection module (123) to collect the photosensitive panel ( 137) on the image information of the image formed. 9. A method for detecting the inclination of a piston ring groove wall, using any piston ring groove wall inclination detection device in claim 1-8, wherein the method comprises the following steps: S1, the control mechanism (105) controls the rotation mechanism (101) to drive the piston (115) to rotate at a constant speed in the horizontal direction; S2, the control mechanism (105) controls the light source (111) of the detection mechanism (103) to vertically illuminate the piston (115), and forms an image on the photosensitive panel (137); S3, the processing module (139) calculates the inclination of the annular groove wall of the piston (115) according to the image formed on the photosensitive panel (137).