CN108489428B - Device and method for detecting coaxiality of piston cylinder - Google Patents
Device and method for detecting coaxiality of piston cylinder Download PDFInfo
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- CN108489428B CN108489428B CN201810319461.3A CN201810319461A CN108489428B CN 108489428 B CN108489428 B CN 108489428B CN 201810319461 A CN201810319461 A CN 201810319461A CN 108489428 B CN108489428 B CN 108489428B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
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Abstract
The invention relates to a device and a method for detecting the coaxiality of a piston cylinder, wherein the device for detecting the coaxiality of the piston cylinder comprises a laser source (9) and a laser beam detector, wherein the laser source is used for emitting a reference light beam (8) which is coincident with the axis of a cylinder barrel (14) of the piston cylinder; the two-dimensional position detector (11) is arranged on a piston (5) of the piston cylinder and used for receiving the reference light beam (8) and outputting the position of the reference light beam (8) irradiated on the piston (5); and the controller (3) is used for receiving the position information output by the two-dimensional position detector (11) and calculating the coaxiality of the piston (5) and the cylinder (14) according to the position information. The detection device provided by the embodiment of the invention utilizes the laser source and the two-dimensional position detector to detect the coaxiality of the piston and the cylinder barrel in the piston cylinder, and has the advantages of simple structure and lower cost; the adjustment is convenient, and the device is suitable for being applied to an actual production field; the coaxiality detection accuracy is high, and the assembly quality of the piston and the cylinder barrel in the piston cylinder is well guided.
Description
Technical Field
The invention relates to the technical field of coaxiality detection, in particular to a piston cylinder coaxiality detection device and method.
Background
The piston cylinder is one of the most widely used basic parts in the mechanical industry. The piston cylinder includes the cylinder, is equipped with the piston in the cylinder and with the piston rod of piston connection. The coaxiality of the piston cylinder (mainly referring to the coaxiality between the piston and the cylinder barrel) is the most important geometric accuracy index of the piston cylinder. In the production and assembly processes of the piston cylinder, the coaxiality of the piston cylinder is easy to deviate, so that the piston is eccentrically worn in work, and even an inner hole is scratched. If the coaxiality error of the piston cylinder is large in assembly, the mechanical product can generate large noise and vibration in work, the service life of the piston cylinder mechanical product is shortened, and large loss is brought to product service. Therefore, how to simulate the working process, detect the coaxiality and adjust the assembly in the assembly of piston cylinder products is very important.
At present, in the prior art, some devices for detecting coaxiality exist, but most devices utilize a displacement sensor or an angle sensor for detection, the influence of piston rod deflection and piston rod rotation on a detection result is not considered, and theoretical errors exist; the structure is complex, the adjusting time is long, the operation is inconvenient, and the actual production field application is not easy; the detection part has a heavier structure, and the deflection of the piston rod can be increased, so that the detection error is increased.
It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a device and a method for detecting the coaxiality of a piston cylinder, so as to simplify the structure as much as possible and improve the accuracy of the coaxiality detection.
In order to achieve the above object, the present invention provides a piston cylinder coaxiality detecting apparatus, comprising:
the laser source is used for emitting a reference light beam which is coincident with the axis of the cylinder barrel of the piston cylinder;
the two-dimensional position detector is arranged on a piston of the piston cylinder and used for receiving the reference light beam and outputting the position of the reference light beam irradiating on the piston; and
and the controller is used for receiving the position information output by the two-dimensional position detector and calculating the coaxiality of the piston and the cylinder barrel according to the position information.
Optionally, the controller is further configured to calculate an inclination angle of the piston with respect to a cross section of the cylinder in the radial direction based on the position information, and to eliminate an influence of the inclination angle when calculating the coaxiality of the piston and the cylinder.
Optionally, the piston cylinder coaxiality detection device further comprises a driving mechanism, the driving mechanism is used for driving the piston to move relative to the cylinder barrel, the two-dimensional position detector can respectively output the position of the reference light beam irradiated on the piston when the piston moves to a plurality of different positions, and the controller is used for processing a plurality of pieces of position information output by the two-dimensional position detector to obtain the coaxiality of the piston and the cylinder barrel.
Optionally, the device for detecting coaxiality of the piston cylinder further comprises an anti-rotation mechanism for preventing the two-dimensional position detector from rotating relative to the cylinder barrel.
Optionally, the rotation prevention mechanism comprises a transition shaft, a bearing, a shaft sleeve and a counterweight, one end of the transition shaft is connected with the piston, the other end of the transition shaft is connected with an inner ring of the bearing, an outer ring of the bearing is connected with the shaft sleeve, the counterweight is installed on the shaft sleeve, and the two-dimensional position detector is installed on the shaft sleeve.
Optionally, the transition shaft is a stepped shaft, a portion of the transition shaft with a larger diameter is connected with the piston, and a portion of the transition shaft with a smaller diameter is inserted into and connected with the inner ring of the bearing.
Optionally, the piston cylinder coaxiality detection device further comprises a position adjustment mechanism, and the position adjustment mechanism is used for adjusting the position of the laser source so that the reference beam emitted by the laser source and the axis of the cylinder barrel coincide with each other.
Optionally, the position adjusting mechanism includes a height adjusting mechanism for adjusting the height of the laser source and a horizontal adjusting mechanism for adjusting the horizontal position of the laser source at the same height.
Optionally, the piston cylinder coaxiality detection device further comprises a support platform for supporting and fixing the cylinder barrel.
Optionally, the laser source is arranged on one side of the cylinder, and one end of the cylinder close to the laser source is open; or the laser source is arranged on one side of the cylinder barrel, and the end cover of one end, close to the laser source, of the cylinder barrel is provided with a through hole which is used for enabling the laser to pass through.
In order to achieve the above object, the present invention further provides a method for detecting the coaxiality of a piston cylinder, including:
emitting a reference beam coincident with the axis of the cylinder barrel of the piston cylinder;
receiving a reference beam by a two-dimensional position detector mounted on a piston of a piston cylinder and outputting a position where the reference beam irradiates the piston;
and receiving the position information output by the two-dimensional position detector, and calculating the coaxiality of the piston and the cylinder barrel according to the position information.
Optionally, the detection method further comprises:
driving the piston to move relative to the cylinder;
outputting reference beams to irradiate positions on the piston when the piston reaches a plurality of different positions through a two-dimensional position detector;
and processing a plurality of position information output by the two-dimensional position detector to obtain the coaxiality of the piston and the cylinder barrel.
Based on the technical scheme, the two-dimensional position detector is arranged on the piston, so that the reference light beam emitted by the laser source can be received and the position of the reference light beam irradiated on the piston can be output, and the controller can calculate the coaxiality of the piston and the cylinder according to the position information output by the two-dimensional position detector. The detection device provided by the embodiment of the invention utilizes the laser source and the two-dimensional position detector to detect the coaxiality of the piston and the cylinder barrel in the piston cylinder, and has the advantages of simple structure and lower cost; the adjustment is convenient, and the device is suitable for being applied to an actual production field; the coaxiality detection accuracy is high, and the assembly quality of the piston and the cylinder barrel in the piston cylinder is well guided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of a device for detecting coaxiality of a piston cylinder according to the invention.
In the figure:
1. a support platform; 2. a drive mechanism; 3. a controller; 4. a piston rod; 5. a piston; 6. a bearing; 7. a shaft sleeve; 8. a reference beam; 9. a laser source; 10. a position adjustment mechanism; 11. a two-dimensional position detector; 12. balancing weight; 13. a transition shaft; 14. a cylinder barrel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention.
A Position Sensor (PSD) is a Device capable of detecting a photoelectric Position. The two-dimensional position detector is capable of detecting a two-dimensional coordinate position of the light beam irradiation position.
In one exemplary embodiment of the piston cylinder coaxiality detection apparatus provided by the present invention, as shown in fig. 1, the detection apparatus includes a laser source 9, a two-dimensional position detector 11, and a controller 3. Wherein the laser source 9 is used for emitting a reference beam 8 which coincides with the axis of the cylinder 14 of the piston cylinder; the two-dimensional position detector 11 is arranged on a piston 5 of the piston cylinder and is used for receiving the reference light beam 8 and outputting the position of the reference light beam 8 irradiating on the piston 5; the controller 3 is used for receiving the position information output by the two-dimensional position detector 11 and calculating the coaxiality of the piston 5 and the cylinder 14 according to the position information.
In the above-described exemplary embodiment, by mounting the two-dimensional position detector 11 on the piston 5, it is possible to receive the reference beam 8 emitted from the laser source 9 and output the position where the reference beam 8 is irradiated on the piston 5, and the controller 3 can calculate the coaxiality of the piston 5 and the cylinder 14 based on the position information output by the two-dimensional position detector 11. The detection device in the embodiment detects the coaxiality of the piston and the cylinder barrel in the piston cylinder by using the laser source and the two-dimensional position detector, and has the advantages of simple structure and lower cost; the adjustment is convenient, and the device is suitable for being applied to an actual production field; the coaxiality detection accuracy is high, and the assembly quality of the piston and the cylinder barrel in the piston cylinder is well guided.
The controller 3 in the piston cylinder coaxiality detecting apparatus may also be configured to calculate an inclination angle of the piston 5 with respect to a cross section of the cylinder 14 in the radial direction based on the position information, and to eliminate the influence of the inclination angle when calculating the coaxiality of the piston 5 and the cylinder 14, in consideration of the possibility that the piston rod 4 connected to the piston 5 may be deformed and the deflection of the piston rod 4 may adversely affect the detection of the coaxiality.
The shape of the light spot can be obtained according to the edge data of the light spot received by the two-dimensional position detector 11, and then the inclination angle of the plane where the two-dimensional position detector 11 is located relative to the radial cross section of the cylinder 14 is calculated and obtained.
The controller 3 may include a conversion module, and the conversion module may convert position information output by the two-dimensional position detector 11 connected to the piston 5 on the deformed piston rod 4 into position information when deflection is zero, so that the controller 3 calculates the coaxiality of the piston 5 and the cylinder 14 according to the converted position information, and eliminates the influence of the deflection of the piston rod 4 on the detection result.
Further, the piston cylinder coaxiality detection device further comprises a driving mechanism 2, the driving mechanism 2 is used for driving the piston 5 to move relative to the cylinder 14, the two-dimensional position detector 11 can respectively output the position of the reference light beam 8 irradiated on the piston 5 when the piston 5 moves to a plurality of different positions, and the controller 3 is used for processing a plurality of pieces of position information output by the two-dimensional position detector 11 to obtain the coaxiality of the piston 5 and the cylinder 14. The accuracy of the coaxiality detection can be further improved by detecting at a plurality of different positions.
For a plurality of position information output from the two-dimensional position detector 11, twice the maximum value of the distance between the center of the piston 5 and the axis of the cylinder 14 may be selected as the magnitude of the coaxiality of the piston 5 and the cylinder 14.
Optionally, the device for detecting the coaxiality of the piston cylinder further comprises an anti-rotation mechanism for preventing the two-dimensional position detector 11 from rotating relative to the cylinder 14. By arranging the rotation preventing mechanism, the influence on the coaxiality detection result when the piston 5 rotates relative to the cylinder 14 in the movement process can be avoided.
Specifically, the rotation prevention mechanism may include a transition shaft 13, a bearing 6, a shaft sleeve 7, and a counterweight 12, one end of the transition shaft 13 is connected to the piston 5, the other end of the transition shaft 13 is connected to an inner ring of the bearing 6, an outer ring of the bearing 6 is connected to the shaft sleeve 7, the counterweight 12 is mounted on the shaft sleeve 7, and the two-dimensional position detector 11 is mounted on the shaft sleeve 7.
The transition shaft 13, the bearing 6 and the shaft sleeve 7 are all coaxial with the piston 5, so that the central position of the piston 5 is converted into the center of the transition shaft 13, the center of the bearing 6 and the center of the shaft sleeve 7, the geometric center of the coordinate of the two-dimensional position detector 11 is set to be coincident with the center of the shaft sleeve 7, and the central position of the piston 5 can be reflected through the geometric center of the coordinate of the two-dimensional position detector 11.
Through setting up bearing 6, at the action of gravity of counter weight 12, even piston 5 takes place rotatoryly for cylinder 14 in the motion process, also can guarantee that two-dimentional position detector 11 does not rotate along with piston 5 to avoid piston 5 rotatory to the influence of axiality testing result, guarantee testing result's accuracy.
Further, the transition shaft 13 is a stepped shaft, a portion of the transition shaft 13 having a larger diameter is connected to the piston 5, and a portion of the transition shaft 13 having a smaller diameter is inserted into and connected to the inner race of the bearing 6. The transition shaft 13 is arranged as a stepped shaft, so that the transition shaft 13 and the piston 5 can be connected more conveniently and reliably.
Optionally, the piston cylinder coaxiality detection device further comprises a position adjustment mechanism 10, and the position adjustment mechanism 10 is used for adjusting the position of the laser source 9 so that the reference beam 8 emitted by the laser source 9 and the axis of the cylinder 14 coincide with each other. By arranging the position adjusting mechanism 10, the laser source 9 can be conveniently adjusted, and the reference beam 8 and the axis of the cylinder 14 are ensured to coincide with each other.
The position adjusting mechanism 10 may be connected to the controller 3, so that the position adjusting mechanism 10 is controlled by the controller 3 to adjust the position of the laser source 9.
Specifically, the position adjusting mechanism 10 includes a height adjusting mechanism for adjusting the height of the laser light source 9 and a horizontal adjusting mechanism for adjusting the horizontal position of the laser light source 9 at the same height.
Optionally, the piston-cylinder coaxiality detecting device further comprises a supporting platform 1, and the supporting platform 1 is used for supporting and fixing the cylinder barrel 14. Through setting up supporting platform 1, can make cylinder 14 fixed, the convenient measurement to the axiality.
Alternatively, the laser source 9 is arranged on one side of the cylinder 14, and one end of the cylinder 14 close to the laser source 9 is open; or, the laser source 9 is arranged on one side of the cylinder 14, and a through hole is arranged on an end cover of one end of the cylinder 14 close to the laser source 9 and used for allowing laser to pass through.
The embodiment of the device for detecting the coaxiality of the piston cylinder is suitable for various mechanical products comprising the piston cylinder, such as piston type hydraulic cylinders, concrete pumping systems and the like, so as to detect the coaxiality of the piston and the cylinder barrel in the piston cylinder and guide the assembly of the piston cylinder.
The invention also provides a piston cylinder coaxiality detection method, which comprises the following steps:
emitting a reference beam 8 coinciding with the axis of the cylinder 14 of the piston cylinder;
receiving the reference beam 8 by a two-dimensional position detector 11 mounted on the piston 5 of the piston cylinder and outputting the position where the reference beam 8 impinges on the piston 5;
and receiving the position information output by the two-dimensional position detector 11, and calculating the coaxiality of the piston 5 and the cylinder 14 according to the position information.
Optionally, the detection method further comprises:
the drive piston 5 moves relative to the cylinder 14;
outputting reference light beams 8 to irradiate positions on the piston 5 when the piston 5 reaches a plurality of different positions through a two-dimensional position detector 11;
the plurality of pieces of position information output from the two-dimensional position detector 11 are processed to obtain the coaxiality of the piston 5 and the cylinder 14.
The positive technical effects of the device for detecting the coaxiality of the piston cylinder in the embodiments are also suitable for the method for detecting the coaxiality of the piston cylinder, and are not described again.
The operation of an embodiment of the device and method for detecting the coaxiality of the piston cylinder according to the present invention is described below with reference to fig. 1:
as shown in fig. 1, in this embodiment, the piston cylinder coaxiality detection device includes a support platform 1, a drive mechanism 2, a controller 3, a piston rod 4, a piston 5, a bearing 6, a sleeve 7, a reference beam 8, a laser source 9, a position adjustment mechanism 10, a two-dimensional position detector 11, a counterweight 12, a transition shaft 13, and a cylinder 14.
The supporting platform 1 is used for supporting the whole detection device and has the functions of leveling and vibration isolation. The drive mechanism 2 is used to drive the piston rod 4 axially along the bore of the cylinder 14. The controller 3 can control the driving mechanism 2, and further control the motion state of the piston rod 4; the position adjusting mechanism 10 can also be controlled to adjust the spatial position of the laser source 9 so that the reference beam 8 emitted by the laser source 9 coincides with the inner bore axis of the cylinder 14; and the data of the two-dimensional position detector 11 can be acquired, the data calculation is carried out, and the detection result is stored. The piston rod 4 is connected with the piston 5, the other side of the piston 5 is connected with a transition shaft 13, and the part with the smaller diameter of the transition shaft 13 is inserted into and connected with the inner ring of the bearing 6. The outer ring of the bearing 6 is connected with a shaft sleeve 7, and a balance weight 12 is arranged at the lower part of the shaft sleeve 7. The two-dimensional position detector 11 is arranged on the right side face of the shaft sleeve 7, and feeds back the relative position of the piston 5 relative to the inner hole of the cylinder barrel 14 in a plurality of sections to the controller 3 in a wireless signal transmission mode in the process that the piston 5 axially moves along the inner hole of the cylinder barrel 14. The reference beam 8 coincides with the bore axis of the cylinder 14, characterizes the bore axis of the cylinder 14, is the detection reference, and forms a light spot on the two-dimensional position detector 11. The position adjusting mechanism 10 is disposed on the supporting platform 1 for adjusting the spatial position of the laser source 9.
Before detection, the cylinder 14, the piston rod 4 and the piston 5 are placed on the supporting platform 1; the controller 3 controls the position adjusting mechanism 10 according to the parameters of the cylinder 14, and adjusts the spatial position of the laser source 9 so that the reference beam 8 coincides with the inner hole axis of the cylinder 14.
In the detection process, the controller 3 controls the driving mechanism 2 to drive the piston 5 to move to a plurality of axial positions of the cylinder 14, and receives position information fed back by the two-dimensional position detector 11 through a wireless signal transmission means, so that the position information of the piston 5 in the axial movement of the inner hole of the cylinder 14 is acquired. The acquired position information includes the deformation of the spot formed by the reference beam 8 in the vertical and horizontal planes on the two-dimensional position detector 11, and the controller 3 can calculate the distance between the center of the piston 5 and the inner hole axis of the cylinder 14 at different positions according to the deformation, select the maximum value of the distance, and take twice the maximum value of the distance as the coaxiality of the piston 5 and the cylinder 14. Meanwhile, the inclination angle of the piston 5 relative to the radial cross section of the cylinder 14 can be calculated and obtained according to the spot shape on the two-dimensional position detector 11, and the influence of the inclination angle on the coaxiality detection can be eliminated through conversion.
Through the description of the multiple embodiments of the device and the method for detecting the coaxiality of the piston cylinder, the device and the method for detecting the coaxiality of the piston cylinder have the advantages that at least one or more of the following advantages are achieved:
1. the structure is simple, the implementation is easy, the cost is low, the application range is wide, the operation is convenient, the detection action is sensitive, and the detection accuracy is high;
2. the inclination angle of the piston is detected, so that the influence of the deflection of the piston rod on a detection result can be eliminated;
3. be equipped with and prevent changeing the mechanism, can avoid the piston to rotate for the cylinder and cause the influence to the testing result.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. A piston cylinder axiality detection device characterized by, includes:
a laser source (9) for emitting a reference beam (8) coinciding with the axis of a cylinder (14) of the piston cylinder;
a two-dimensional position detector (11) mounted on a piston (5) of the piston cylinder for receiving the reference beam (8) and outputting a position at which the reference beam (8) impinges on the piston (5); and
the controller (3) is used for receiving the position information output by the two-dimensional position detector (11) and calculating the coaxiality of the piston (5) and the cylinder barrel (14) according to the position information;
the device for detecting the coaxiality of the piston cylinder further comprises an anti-rotation mechanism, wherein the anti-rotation mechanism is used for preventing the two-dimensional position detector (11) from rotating relative to the cylinder barrel (14);
prevent changeing mechanism and include transition axle (13), bearing (6), axle sleeve (7) and counter weight (12), the one end of transition axle (13) with piston (5) are connected, the other end of transition axle (13) with the inner circle of bearing (6) is connected, the outer lane of bearing (6) with axle sleeve (7) are connected, counter weight (12) are installed on axle sleeve (7), two-dimensional position detector (11) are installed on axle sleeve (7).
2. Piston-cylinder coaxiality detection apparatus according to claim 1, wherein the controller (3) is further configured to calculate an inclination angle of the piston (5) with respect to a radial cross-section of the cylinder (14) based on the position information, and to eliminate the influence of the inclination angle when calculating the coaxiality of the piston (5) and the cylinder (14).
3. The piston-cylinder coaxiality detection apparatus according to claim 1, further comprising a drive mechanism (2), wherein the drive mechanism (2) is configured to drive the piston (5) to move relative to the cylinder (14), wherein the two-dimensional position detector (11) is configured to output a position at which the reference light beam (8) impinges on the piston (5) when the piston (5) moves to a plurality of different positions, and wherein the controller (3) is configured to process a plurality of position information output by the two-dimensional position detector (11) to obtain the coaxiality of the piston (5) and the cylinder (14).
4. Piston-cylinder coaxiality detection apparatus according to claim 1, characterized in that said transition shaft (13) is a stepped shaft, the portion of said transition shaft (13) with the larger diameter being connected to said piston (5), and the portion of said transition shaft (13) with the smaller diameter being inserted in and connected to the inner ring of said bearing (6).
5. Piston-cylinder coaxiality detection apparatus according to claim 1, characterized in that it further comprises a position adjustment mechanism (10), said position adjustment mechanism (10) being adapted to adjust the position of said laser source (9) so that said reference beam (8) emitted by said laser source (9) and the axis of said cylinder (14) coincide with each other.
6. The piston-cylinder coaxiality detection apparatus according to claim 5, wherein said position adjustment mechanism (10) comprises a height adjustment mechanism for adjusting the height of said laser light source (9) and a level adjustment mechanism for adjusting the level position of said laser light source (9) at the same height.
7. Piston-cylinder coaxiality detection apparatus according to claim 1, characterized in that it further comprises a support platform (1), said support platform (1) being adapted to support and fix said cylinder barrel (14).
8. Piston-cylinder coaxiality detection apparatus according to claim 1, characterized in that said laser source (9) is arranged on one side of said cylinder (14), the end of said cylinder (14) close to said laser source (9) being open; or the laser source (9) is arranged on one side of the cylinder barrel (14), and a through hole is formed in an end cover of one end, close to the laser source (9), of the cylinder barrel (14) and used for enabling the laser to penetrate through.
9. A piston cylinder coaxiality detection method based on the piston cylinder coaxiality detection device according to any one of claims 1 to 8, characterized by comprising the following steps:
emitting a reference beam (8) coinciding with the axis of a cylinder (14) of the piston cylinder;
receiving the reference beam (8) by means of a two-dimensional position detector (11) mounted on a piston (5) of the piston cylinder and outputting a position at which the reference beam (8) impinges on the piston (5);
and receiving the position information output by the two-dimensional position detector (11), and calculating the coaxiality of the piston (5) and the cylinder barrel (14) according to the position information.
10. The piston cylinder coaxiality detection method of claim 9, further comprising:
-driving the piston (5) in a movement relative to the cylinder (14);
outputting the position of the reference light beam (8) irradiated on the piston (5) when the piston (5) reaches a plurality of different positions through the two-dimensional position detector (11);
and processing a plurality of position information output by the two-dimensional position detector (11) to obtain the coaxiality of the piston (5) and the cylinder barrel (14).
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| CN201810319461.3A CN108489428B (en) | 2018-04-11 | 2018-04-11 | Device and method for detecting coaxiality of piston cylinder |
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| CN108917563B (en) * | 2018-08-24 | 2019-11-01 | 徐工集团工程机械有限公司 | A kind of portable piston pair axiality detection device |
| CN110567399B (en) * | 2019-07-31 | 2021-07-27 | 武汉船用机械有限责任公司 | Auxiliary detection equipment and detection method for hole |
| CN111795656B (en) * | 2020-06-24 | 2021-10-22 | 中联重科股份有限公司 | Coaxiality detection device and coaxiality detection method |
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