CN115235384A - Laser rotary centering device - Google Patents
Laser rotary centering device Download PDFInfo
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- CN115235384A CN115235384A CN202210865039.4A CN202210865039A CN115235384A CN 115235384 A CN115235384 A CN 115235384A CN 202210865039 A CN202210865039 A CN 202210865039A CN 115235384 A CN115235384 A CN 115235384A
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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
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Abstract
The application relates to a rotatory centering device of laser includes: the adapter flange is provided with a driving motor, and the axis of the driving motor is collinear with the axis of the adapter flange; the centering rotor is coaxially connected with the driving motor, and the driving motor drives the centering rotor to rotate; the laser transmitter is rotationally connected to the centering rotor and is far away from the axis of the centering rotor, and the laser beam of the laser transmitter and the axis of the centering rotor are on the same plane; the included angle between the laser beam of the laser transmitter and the axis of the centering rotor is increased along with the increase of the rotating speed of the centering rotor, or is reduced along with the increase of the rotating speed of the centering rotor. The device uses a driving motor to drive a laser emitter to rotate and move centrifugally, and the position of an axis is visually displayed through a light spot formed by the rotation of a laser beam. The method and the device can effectively promote the centering work and correct errors in time, and improve the centering efficiency.
Description
Technical Field
The application relates to the technical field of transmission shaft centering measuring tools, in particular to a laser rotation centering device.
Background
When the engine/motor bench test is carried out, the central axis of a crankshaft/rotor of the engine/motor needs to be coaxial with the central axis of a rotor of the dynamometer system, and improper centering can cause overlarge vibration, so that the service life of a bearing bush/bearing of the engine/motor is shortened, and the test result is invalid or a test sample piece is damaged. A dial indicator or a laser centering instrument is conventionally used for centering, the requirement on operation experience is high in the centering process, and the centering result is greatly influenced by human factors.
The conventional operation is to determine the wheel base and then perform centering, when the centering is performed, the engine/motor needs to be adjusted, the wheel base between the engine/motor and the dynamometer also changes in the adjustment process, and at the moment, the wheel base needs to be verified while the centering operation is performed on the engine/motor, so that the centering operation is complicated. If the axle distance is not verified in the centering process, the centering work can still be completed by utilizing the conventional centering scheme, and the change of the axle distance can cause the overlarge axle distance of the transmission shaft to cause rework after the centering is completed.
Disclosure of Invention
The embodiment of the application provides a rotatory centering device of laser to transmission shaft centering in-process requires higher to the operation experience among the solution correlation technique, and centering work is too loaded down with trivial details, problem that centering efficiency is low.
The embodiment of the application provides a rotatory centering device of laser, includes:
the adapter flange is provided with a driving motor, and the axis of the driving motor is collinear with the axis of the adapter flange;
the centering rotor is coaxially connected with the driving motor, and the driving motor drives the centering rotor to rotate from low speed to high speed and/or from high speed to low speed and/or at a constant speed;
the laser emitter is rotationally connected to the centering rotor and is far away from the axis of the centering rotor, and the laser beam of the laser emitter and the axis of the centering rotor are on the same plane;
the included angle between the laser beam of the laser transmitter and the axis of the centering rotor is increased along with the increase of the rotating speed of the centering rotor, or is reduced along with the increase of the rotating speed of the centering rotor.
In some embodiments: the centering rotor is of a disc-shaped structure or a centrosymmetric structure, and is provided with a mounting hole for mounting a laser transmitter;
the laser emitter is rotatably connected in the mounting hole through the mounting bracket, and the rotating axis of the laser emitter is perpendicular to the axis of the centering rotor.
In some embodiments: a rotating shaft which is rotatably connected with the mounting bracket is arranged in the mounting hole of the centering rotor, and the mounting bracket and the laser transmitter rotate on the centering rotor around the axis of the rotating shaft;
when the included angle between the laser beam of the laser emitter and the axis of the centering rotor is increased along with the increase of the rotating speed of the centering rotor, the gravity centers of the laser emitter and the mounting bracket are far away from the emitting end of the laser emitter;
when the included angle between the laser beam of the laser transmitter and the axis of the centering rotor is reduced along with the increase of the rotating speed of the centering rotor, the gravity centers of the laser transmitter and the mounting bracket are close to the transmitting end of the laser transmitter.
In some embodiments: the centering rotor is also provided with a centrifugal resisting spring and a position retaining spring which are connected with the mounting bracket, and the centrifugal resisting spring and the position retaining spring are respectively positioned at two sides of the mounting bracket;
and the distance between the centrifugal opposing spring and the axis of the centering rotor is greater than the distance between the position retaining spring and the axis of the centering rotor.
In some embodiments: the driving motor is a pneumatic motor, the pneumatic motor comprises a shaft rod coaxially connected with the adapter flange and an annular shell which is positioned on the periphery of the shaft rod and coaxially connected with the adapter flange, and an annular gas expansion cavity is formed between the shaft rod and the annular shell;
one end of the centering rotor, which is close to the adapter flange, is coaxially connected with an annular rotor positioned in the annular gas expansion cavity, and a plurality of rotor blades which are in sliding connection with the annular shell are arranged around the annular rotor.
In some embodiments: the side wall of the annular shell is provided with an air inlet hole for introducing compressed air into the annular gas expansion cavity and an air outlet hole for discharging the air in the annular gas expansion cavity;
the end face of the annular shell is provided with an annular comb tooth tip which is connected with the centering rotor in a sealing mode, and one end, close to the annular shell, of the centering rotor is provided with an annular comb tooth step matched with the comb tooth tip.
In some embodiments: the air inlet is connected with an air pipe quick connector, the air pipe quick connector is connected with an air pipe, the air pipe is connected with a pressure regulating valve in series, and the pressure regulating valve regulates the rotating speed of the pneumatic motor by regulating the air inlet flow.
In some embodiments: a bearing mounting hole is formed between the inner hole of the centering rotor and the shaft rod, the shaft rod is sleeved with a bearing, the shaft rod is provided with a shaft retaining ring for fixing the bearing on the shaft rod, and the inner hole of the centering rotor is provided with a hole retaining ring for fixing the bearing on the centering rotor.
In some embodiments: a positive electrode carbon brush and a negative electrode carbon brush are fixedly arranged at one end, close to the centering rotor, of the adapter flange, and a positive electrode electric slip ring and a negative electrode electric slip ring which are respectively connected with the positive electrode carbon brush and the negative electrode carbon brush in a sliding manner are arranged at one end, close to the adapter flange, of the centering rotor;
the laser transmitter is provided with a positive electrode lead and a negative electrode lead, the positive electrode lead is connected with the positive electrode electric slip ring, and the negative electrode lead is connected with the negative electrode electric slip ring.
In some embodiments: the one end that is close to the centering rotor on the adaptor flange can be dismantled and be connected with protection target disc, the centering hole has been seted up on the protection target disc, the centre of a circle in centering hole is located adaptor flange's axis, the last annular light trap that sees through out laser beam that still sets up of protection target disc.
The technical scheme who provides this application brings beneficial effect includes:
the embodiment of the application provides a laser rotary centering device, which is characterized in that an adapter flange is arranged on the laser rotary centering device, a driving motor is arranged on the adapter flange, and the axis of the driving motor is collinear with the axis of the adapter flange; the centering rotor is coaxially connected with a driving motor, and the driving motor drives the centering rotor to rotate from low speed to high speed and/or from high speed to low speed and/or at a constant speed; the laser transmitter is rotationally connected to the centering rotor and is far away from the axis of the centering rotor, and the laser beam of the laser transmitter and the axis of the centering rotor are on the same plane; the included angle between the laser beam of the laser transmitter and the axis of the centering rotor is increased along with the increase of the rotating speed of the centering rotor, or is reduced along with the increase of the rotating speed of the centering rotor.
Therefore, when the laser rotary centering device performs centering operation on the two transmission shafts, the laser rotary centering device is arranged at the end parts of the two transmission shafts, the adapter flange of the laser rotary centering device is connected with the end part of the transmission shaft, and the axis of the adapter flange is ensured to be collinear with the axis of the transmission shaft. The driving motor is started, the driving motor drives the centering rotor and the laser emitter to rotate synchronously, the laser emitter rotates under the action of centrifugal force in the rotating process, and the laser beam of the laser emitter irradiates the central position of the other laser rotating centering device and forms an annular aperture or a light spot. When the aperture is formed, the rotating speed of the driving motor needs to be increased or decreased so as to increase the included angle between the laser beam and the axis of the centering rotor, and the laser beam of the laser emitter irradiates the central position of the other laser rotation centering device to form a light spot so as to complete axis centering.
After the two transmission shafts finish the axial alignment, the position of one transmission shaft is adjusted to gradually reduce the distance between the two transmission shafts, and simultaneously, the rotating speed of the driving motor is gradually increased or reduced, so that the laser beam of the laser emitter is kept to irradiate the central position of the other laser rotation alignment device and form a light spot. The connecting line between the light spots formed by the mutual irradiation of the two laser transmitters is the axis of the two transmission shafts after being centered, so that the coaxiality of the two transmission shafts after being centered is ensured. The device uses a driving motor to drive a laser emitter to rotate and move centrifugally, and the axle center of an engine/motor and the axle center of a dynamometer are visually displayed through a light spot formed by the rotation of a laser beam. When the axle distance changes, the light shape of the laser beam obviously changes, so that the centering work cannot be continued, and the light shape can be automatically restored after the axle distance or the distance is restored and adjusted, so that the centering work can be effectively promoted, the error can be timely corrected, and the centering efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of two laser rotation centering devices in operation according to an embodiment of the present application;
FIG. 2 is an exploded view of the laser rotating centering device according to the embodiment of the present application;
FIG. 3 is a cross-sectional view of a first perspective of a laser rotational centering apparatus according to an embodiment of the present application;
FIG. 4 is a cross-sectional view of a second perspective of the laser rotational centering device of the present application.
Reference numerals:
1. a transfer flange; 2. a drive motor; 3. centering the rotor; 4. a laser transmitter; 5. a protective target disc;
11. a shaft lever; 12. an annular housing; 13. a bearing; 14. a quick connector for an air pipe; 15. a breather pipe; 16. a positive electrode carbon brush; 17. a negative electrode carbon brush; 18. a retainer ring for a shaft; 19. a retainer ring for a bore;
21. an annular rotor; 22. a rotor blade; 31. mounting holes; 32. mounting a bracket; 33. a centrifugal opposing spring; 34. a position retaining spring; 35. a rotating shaft;
41. a laser beam; 51. centering holes; 52. and an annular light hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.
The embodiment of the application provides a rotatory centering device of laser, and it can solve among the correlation technique transmission shaft centering in-process and require higher to the operation experience, and centering work is too loaded down with trivial details, problem that centering efficiency is low.
Referring to fig. 1 to 4, an embodiment of the present application provides a laser rotation centering device, including:
the adapter flange 1 is of a disc-shaped structure, a plurality of threaded holes are formed in the circumference of the adapter flange 1, and the threaded holes in the adapter flange 1 are used for coaxially mounting the adapter flange 1 on a rotor output shaft of an engine, a motor and a dynamometer which need centering. A driving motor 2 is further arranged on the adapter flange 1, a person skilled in the art of the driving motor 2 can select a pneumatic motor or an electric motor, and the axis of the driving motor 2 is collinear with the axis of the adapter flange 1 so as to ensure that the axis of the driving motor 2 is also collinear with the axis of the output shaft of the rotor of the engine, the electric motor and the dynamometer.
The centering rotor 3, this centering rotor 3 is connected with drive motor 2 coaxially, drive motor 2 drives centering rotor 3 from low-speed to high-speed and/or from high-speed to low-speed and/or constant speed rotary motion. Centering rotor 3 is central symmetry structure, and this centering rotor 3 is used for installing laser emitter 4, when centering rotor 3 drives laser emitter 4 synchronous revolution motion, makes laser emitter 4 produce centrifugal force when rotatory to change laser emitter 4's laser beam 41 and shine the angle.
And the laser transmitter 4 is rotatably connected to the centering rotor 3 and is far away from the axis of the centering rotor 3, and the laser beam 41 of the laser transmitter 4 is on the same plane with the axis of the centering rotor 3. The laser transmitter 4 is configured to emit a laser beam 41 outwards, wherein the laser beam 41 is visible light. The laser emitter 4 is able to form an annular aperture or spot by rotating the laser beam 41 of the laser emitter 4 when it is moved in rotation on the centering rotor 3.
The laser beam 41 of the laser transmitter 4 is on the same plane with the axis of the centering rotor 3, and the included angle between the laser beam of the laser transmitter 4 and the axis of the centering rotor 3 is increased along with the increase of the rotating speed of the centering rotor 3, or is decreased along with the increase of the rotating speed of the centering rotor 3. The rotating speed of the centering rotor 3 is adjusted through the driving motor 2, so that the laser emitter 4 generates different centrifugal forces, the irradiation angle of the laser beam 41 can be changed by the centrifugal forces, and when the irradiation angle of the laser beam 41 needs to be changed, the rotating speed of the driving motor 2 only needs to be adjusted.
The rotatory centering device of laser when carrying out centering operation to two transmission shafts of this application embodiment all installs a rotatory centering device of laser at the tip of two transmission shafts, and adapter flange 1 of the rotatory centering device of laser and the end connection of transmission shaft to guarantee the axis collineation of adapter flange 1 and the axis of transmission shaft. And starting the driving motor 2, wherein the driving motor 2 drives the centering rotor 3 and the laser emitter 4 to synchronously rotate.
The laser transmitter 4 rotates relative to the centering rotor 3 under the action of centrifugal force during rotation, and a laser beam 41 of the laser transmitter 4 irradiates the central position of another laser rotation centering device and forms an annular aperture or a light spot. When forming the aperture, the rotating speed of the driving motor 2 needs to be increased or decreased to increase the included angle between the laser beam 41 and the axis of the centering rotor 3, so that the laser beam 41 of the laser transmitter 4 irradiates the central position of another laser rotation centering device to form a light spot, and then the axis centering is completed.
After the two transmission shafts finish the axial alignment, the position of one of the transmission shafts is adjusted to gradually reduce the distance between the two transmission shafts, and simultaneously gradually increase or reduce the rotating speed of the driving motor 2, so as to keep the laser beam 41 of the laser emitter 4 irradiating the central position of the other laser rotation alignment device and form a light spot. The connecting line between the light spots formed by the mutual irradiation of the laser transmitters 4 of the two laser rotary centering devices is the axis of the two transmission shafts after centering, so that the coaxiality of the two transmission shafts after centering is ensured.
The laser rotating and centering device uses the driving motor 2 to drive the laser emitter 4 to rotate and move centrifugally, and the light spot formed by the rotation of the laser beam 41 visually displays the axle center of the engine/motor and the axle center of the dynamometer. When the wheelbase changes, the light type of the laser beam 41 obviously changes, so that the centering work cannot be continued, and after the wheelbase or the wheelbase is adjusted, the light type can be automatically recovered, so that the centering work can be effectively promoted, the error can be timely corrected, and the centering efficiency is improved.
In some alternative embodiments: referring to fig. 2 to 4, the embodiment of the present application provides a laser rotation centering device, in which a centering rotor 3 of the laser rotation centering device is a disc-shaped structure or a central symmetric structure, and a mounting hole 31 for mounting a laser emitter 4 is formed in the centering rotor 3. The laser transmitter 4 is rotatably connected in the mounting hole 31 through a mounting bracket 32, and the rotation axis of the laser transmitter 4 is perpendicular to the axis of the centering rotor 3. The centering rotor 3 adopts a disc-shaped structure or a central symmetrical structure to prevent the centering rotor 3 from vibrating while rotating. The rotation axis of the laser transmitter 4 is perpendicular to the axis of the centering rotor 3, so that the laser beam 41 of the laser transmitter 4 and the axis of the centering rotor 3 are on the same plane, and an included angle is formed between the laser beam 41 of the laser transmitter 4 and the axis of the centering rotor 3, and the included angle is the irradiation angle of the laser beam 41.
A rotating shaft 35 which is rotatably connected with the mounting bracket 32 is arranged in the mounting hole of the centering rotor 3, and the mounting bracket 32 and the laser transmitter 4 rotate on the centering rotor 3 around the axis of the rotating shaft 35. When the angle between the laser beam 41 of the laser transmitter 4 and the axis of the centering rotor 3 increases following an increase in the rotational speed of the centering rotor 3, the center of gravity of the laser transmitter 4 and the mounting bracket 32 is located away from the transmitting end of the laser transmitter 4. When the angle between the laser beam 41 of the laser transmitter 4 and the axis of the centering rotor 3 decreases following an increase in the rotational speed of the centering rotor 3, the center of gravity of the laser transmitter 4 and the mounting bracket 32 approaches the transmitting end of the laser transmitter 4.
A centrifugal resisting spring 33 and a position maintaining spring 34 which are connected with the mounting bracket 32 are also arranged on the centering rotor 3, the centrifugal resisting spring 33 and the position maintaining spring 34 are respectively positioned at two sides of the mounting bracket 32, and the distance between the centrifugal resisting spring 33 and the axis of the centering rotor 3 is larger than the distance between the position maintaining spring 34 and the axis of the centering rotor 3. The centrifugal counter spring 33 and the position holding spring 34 are both preferably helical compression springs, and the centrifugal counter spring 33 is used for elastically supporting the mounting bracket 32 to linearly adjust the rotation angle of the laser transmitter 4 when subjected to centrifugal force; that is, as the centrifugal force applied to the laser transmitter 4 increases, the amount of compression of the centrifugal counter spring 33 increases, and the rotation angle of the laser transmitter 4 increases. Position maintaining spring 34 is used to gradually return laser emitting device 4 to the original position as laser emitting device 4 is subjected to a gradual decrease in centrifugal force.
In some alternative embodiments: referring to fig. 2 to 4, the embodiment of the present application provides a laser rotary centering device, and a driving motor 2 of the laser rotary centering device is preferably a pneumatic motor, and the pneumatic motor includes a shaft 11 coaxially connected to a adaptor flange 1, and an annular housing 12 located at the outer periphery of the shaft 11 and coaxially connected to the adaptor flange 1, and an annular gas expansion cavity is formed between the shaft 11 and the annular housing 12. An annular rotor 21 located in the annular gas expansion cavity is coaxially connected to one end of the centering rotor 3 close to the adapter flange 1, and a plurality of rotor blades 22 slidably connected with the annular housing 12 are arranged around the annular rotor 21.
The side wall of the annular shell 12 is provided with an air inlet hole for introducing compressed air into the annular gas expansion cavity and an air outlet hole for discharging air in the annular gas expansion cavity. The end surface of the annular shell 12 is provided with an annular comb tooth point which is connected with the centering rotor 3 in a sealing way, one end of the centering rotor 3 close to the annular shell 12 is provided with an annular comb tooth step which is matched with the comb tooth point, and the annular comb tooth point is matched with the annular comb tooth step, so that the centering rotor 3 is sealed on the annular shell 12 in a rotating way. The air inlet is connected with an air pipe quick connector 14, the air pipe quick connector 14 is connected with a vent pipe 15, and the vent pipe 15 is connected with a pressure regulating valve (not shown in the figure) in series, and the pressure regulating valve regulates the rotation speed of the pneumatic motor by regulating the air inlet flow.
Put through compressed air source to breather pipe 15 during the use, compressed gas gets into annular gas expansion chamber from trachea quick-operation joint 14, and the compressed air inflation promotion rotor blade 22 is toward exhausting the hole motion in the annular gas expansion chamber, and rotor blade 22 promotes centering rotor 3 rotatory, discharges through the gas vent after the inflation, and the inflation process is incessantly circulated, and centering rotor 3 lasts rotatory, and the regulation of passing through pressure regulating valve of 3 rotational speeds of centering rotor. When the centering rotor 3 rotates, the laser transmitter 4 overcomes the elasticity of the centrifugal counter spring 33 to deflect radially under the action of centrifugal force, the direction of the laser beam 41 deflects towards the axis direction, and the air source pressure is adjusted until the laser beam 41 forms a light spot at the center position of another laser rotation centering device.
Similarly, the air source pressure of the other laser rotation centering device is adjusted, and the laser beam 41 of the other laser rotation centering device faces the center of the laser rotation centering device to complete centering. In the adjusting process, if the distance between the two transmission shafts changes, the spot diameter of the laser beam 41 of the double-side laser rotation centering device becomes larger or becomes an annular aperture, and after the laser beam is adjusted to the target distance, the spot of the laser rotation centering device is recovered, and the laser rotation centering is continued until the adjustment is completed.
In some alternative embodiments: referring to fig. 2 to 4, the embodiment of the present application provides a laser rotation centering device, and a bearing mounting hole is formed between an inner hole of a centering rotor 3 and a shaft 11 of the laser rotation centering device. The shaft lever 11 is sleeved with two bearings 13 coaxially arranged, the shaft lever 11 is provided with a shaft retainer 18 for fixing the bearings 13 on the shaft lever 11, and the shaft retainer 18 is used for axially limiting the bearings 13 so as to enable the bearings 13 to rotate on the shaft lever 11. The inner bore of the centering rotor 3 is provided with a hole retainer 19 for fixing the bearing 13 to the centering rotor 3, and the hole retainer 19 serves to axially restrain the centering rotor 3 so that the centering rotor 3 rotates on the bearing 13.
A positive carbon brush 16 and a negative carbon brush 17 are fixedly arranged at one end of the adapter flange 1 close to the centering rotor 3, and a positive electrical slip ring (not shown in the figure) and a negative electrical slip ring (not shown in the figure) which are respectively connected with the positive carbon brush 16 and the negative carbon brush 17 in a sliding manner are arranged at one end of the centering rotor 3 close to the adapter flange 1. The laser transmitter 4 is provided with a positive electrode lead (not shown in the figure) and a negative electrode lead (not shown in the figure), the positive electrode lead is connected with the positive electrode electric slip ring, and the negative electrode lead is connected with the negative electrode electric slip ring. The positive carbon brush 16 and the negative carbon brush 17 supply power to the laser transmitter 4 through the positive electrical slip ring and the negative electrical slip ring, so that the laser transmitter 4 is reliably connected with an external power supply in a rotating state, and the laser transmitter 4 can also supply power through a battery, so that the positive carbon brush 16 and the negative carbon brush 17 are eliminated.
In some alternative embodiments: referring to fig. 1 to 4, the embodiment of the present application provides a laser rotation centering device, a protective target disc 5 is detachably connected to one end of an adapter flange 1 of the laser rotation centering device, which is close to a centering rotor 3, and the protective target disc 5 is used for hiding the centering rotor 3, a driving motor 2 and a laser emitter 4 in the protective target disc 5. The protection target disc 5 is provided with a centering hole 51, the center of the centering hole 51 is positioned on the axis of the adapter flange 1, and the protection target disc 5 is further provided with an annular light-transmitting hole 52 for transmitting the laser beam 41.
The protection target disc 5 of the embodiment of the application is not only used for protecting the centering rotor 3, the driving motor 2 and the laser emitter 4, and prevents the centering rotor 3, the driving motor 2 and the laser emitter 4 from colliding with in the rotating process. In addition, a centering hole 51 is formed in the center of the shield target 5, and an annular light-transmitting hole 52 is formed concentrically with the centering hole 51, the centering hole 51 being used to position the spot of the laser beam 41, and when the spot of the laser beam 41 coincides with the centering hole 51, centering is performed. The annular light hole 52 is used to prevent the protection target disk 5 from blocking the laser beam 41, and then to emit the laser beam 41 to the protection target disk 5 of another laser rotation centering device.
Principle of operation
The embodiment of the application provides a laser rotary centering device, which is characterized in that a transfer flange 1 is arranged, a driving motor 2 is arranged on the transfer flange 1, and the axis of the driving motor 2 is collinear with the axis of the transfer flange 1; the centering rotor 3 is coaxially connected with the driving motor 2, and the driving motor 2 drives the centering rotor 3 to rotate from low speed to high speed and/or from high speed to low speed and/or at a constant speed; the laser transmitter 4 is rotatably connected to the centering rotor 3 and is far away from the axis of the centering rotor 3, and the laser beam 41 of the laser transmitter 4 is on the same plane with the axis of the centering rotor 3; the angle between the laser beam 41 of the laser transmitter 4 and the axis of the centering rotor 3 increases with increasing rotational speed of the centering rotor 3 or decreases with increasing rotational speed of the centering rotor 3.
Therefore, when the laser rotary centering device performs centering operation on two transmission shafts, the laser rotary centering device is arranged at the end parts of the two transmission shafts, the adapter flange 1 of the laser rotary centering device is connected with the end parts of the transmission shafts, and the axis of the adapter flange 1 is ensured to be collinear with the axis of the transmission shafts. The driving motor 2 is started, the driving motor 2 drives the centering rotor 3 and the laser emitter 4 to synchronously rotate, the laser emitter 4 radially deflects under the action of centrifugal force in the rotating process, and the laser beam 41 of the laser emitter 4 irradiates the central position of another laser rotating centering device and forms an annular aperture or a light spot. When forming the aperture, the rotating speed of the driving motor 2 needs to be increased or decreased to increase the included angle between the laser beam 41 and the axis of the centering rotor 3, so that the laser beam 41 of the laser transmitter 4 irradiates on the central position of another laser rotation centering device to form a light spot, and then the axis centering is completed.
After the two transmission shafts finish the axial alignment, the position of one of the transmission shafts is adjusted to gradually reduce the distance between the two transmission shafts, and simultaneously gradually increase or reduce the rotating speed of the driving motor 2, so as to keep the laser beam 41 of the laser emitter 4 irradiating the central position of the other laser rotation alignment device and form a light spot. The connecting line between the light spots formed by the mutual irradiation of the two laser transmitters is the axis of the two transmission shafts after being centered, so that the coaxiality of the two transmission shafts after being centered is ensured. The device uses the driving motor 2 to drive the laser emitter 4 to rotate and move centrifugally, and the light spot formed by the rotation of the laser beam 41 visually displays the axle center of the engine/motor and the axle center of the dynamometer. When the wheelbase changes, the light type of the laser beam obviously changes, so that the centering work cannot be continued, and the light type can be automatically recovered after the wheelbase or the distance is recovered and adjusted, so that the centering work can be effectively promoted, the error can be timely corrected, and the centering efficiency is improved.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A laser rotary centering device, comprising:
the adapter flange (1) is provided with a driving motor (2), and the axis of the driving motor (2) is collinear with the axis of the adapter flange (1);
the centering rotor (3) is coaxially connected with the driving motor (2), and the driving motor (2) drives the centering rotor (3) to rotate from low speed to high speed and/or from high speed to low speed and/or at a constant speed;
the laser emitter (4) is rotatably connected to the centering rotor (3) and is far away from the axis of the centering rotor (3), and a laser beam (41) of the laser emitter (4) is on the same plane with the axis of the centering rotor (3);
the included angle between the laser beam (41) of the laser transmitter (4) and the axis of the centering rotor (3) is increased along with the increase of the rotating speed of the centering rotor (3), or is reduced along with the increase of the rotating speed of the centering rotor (3).
2. A laser rotary centering device as claimed in claim 1, wherein:
the centering rotor (3) is of a disc-shaped structure or a central symmetry structure, and a mounting hole (31) for mounting the laser transmitter (4) is formed in the centering rotor (3);
the laser emitter (4) is rotatably connected into the mounting hole (31) through a mounting bracket (32), and the rotating axis of the laser emitter (4) is perpendicular to the axis of the centering rotor (3).
3. A laser rotary centering device as claimed in claim 2, wherein:
a rotating shaft (35) which is rotatably connected with the mounting bracket (32) is arranged in the mounting hole (31) of the centering rotor (3), and the mounting bracket (32) and the laser transmitter (4) rotate on the centering rotor (3) around the axis of the rotating shaft (35);
when the included angle between the laser beam (41) of the laser transmitter (4) and the axis of the centering rotor (3) is increased along with the increase of the rotating speed of the centering rotor (3), the gravity centers of the laser transmitter (4) and the mounting bracket (32) are far away from the transmitting end of the laser transmitter (4);
when the included angle between the laser beam (41) of the laser transmitter (4) and the axis of the centering rotor (3) is reduced along with the increase of the rotating speed of the centering rotor (3), the gravity centers of the laser transmitter (4) and the mounting bracket (32) are close to the transmitting end of the laser transmitter (4).
4. A laser rotary centering device as claimed in claim 2 or 3, wherein:
a centrifugal resisting spring (33) and a position maintaining spring (34) which are connected with the mounting bracket (32) are further arranged on the centering rotor (3), and the centrifugal resisting spring (33) and the position maintaining spring (34) are respectively positioned on two sides of the mounting bracket (32);
and the distance between the centrifugal counter spring (33) and the axis of the centering rotor (3) is greater than the distance between the position retaining spring (34) and the axis of the centering rotor (3).
5. A laser rotary centering device as claimed in claim 1, wherein:
the driving motor (2) is a pneumatic motor, the pneumatic motor comprises a shaft rod (11) coaxially connected with the adapter flange (1), and an annular shell (12) which is positioned on the periphery of the shaft rod (11) and coaxially connected with the adapter flange (1), and an annular gas expansion cavity is formed between the shaft rod (11) and the annular shell (12);
one end of the centering rotor (3) close to the adapter flange (1) is coaxially connected with an annular rotor (21) located in an annular gas expansion cavity, and a plurality of rotor blades (22) in sliding connection with the annular shell (12) are arranged on the periphery of the annular rotor (21).
6. A laser rotary centering device as claimed in claim 5, wherein:
the side wall of the annular shell (12) is provided with an air inlet hole for introducing compressed air into the annular gas expansion cavity and an air outlet hole for discharging air in the annular gas expansion cavity;
the end face of the annular shell (12) is provided with an annular comb tooth tip which is connected with the centering rotor (3) in a sealing mode, and one end, close to the annular shell, of the centering rotor (3) is provided with an annular comb tooth step matched with the comb tooth tip.
7. A laser rotary centering device as claimed in claim 6, wherein:
the air inlet is connected with an air pipe quick connector (14), an air pipe (15) is connected onto the air pipe quick connector (14), a pressure regulating valve is connected onto the air pipe (15) in series, and the air regulating valve regulates the rotating speed of the pneumatic motor by regulating the air inlet flow.
8. A laser rotary centering device as claimed in claim 5, wherein:
a bearing mounting hole is formed between an inner hole of the centering rotor (3) and the shaft lever (11), the shaft lever (11) is sleeved with a bearing (13), a shaft check ring (18) for fixing the bearing (13) on the shaft lever (11) is arranged on the shaft lever (11), and a hole check ring (19) for fixing the bearing (13) on the centering rotor (3) is arranged in the inner hole of the centering rotor (3).
9. A laser rotary centering device as claimed in claim 1, wherein:
a positive carbon brush (16) and a negative carbon brush (17) are fixedly arranged at one end, close to the centering rotor (3), of the adapter flange (1), and a positive electric slip ring and a negative electric slip ring which are respectively connected with the positive carbon brush (16) and the negative carbon brush (17) in a sliding manner are arranged at one end, close to the adapter flange (1), of the centering rotor (3);
the laser transmitter (4) is provided with a positive electrode lead and a negative electrode lead, the positive electrode lead is connected with the positive electrode electric slip ring, and the negative electrode lead is connected with the negative electrode electric slip ring.
10. A laser rotary centering device as claimed in claim 1, wherein:
the one end that is close to centering rotor (3) on adapter flange (1) can be dismantled and be connected with protection target disc (5), seted up centering hole (51) on protection target disc (5), the centre of a circle of centering hole (51) is located adapter flange (1)'s axis, still set up annular light trap (52) of penetrating laser beam (41) on protection target disc (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210865039.4A CN115235384A (en) | 2022-07-21 | 2022-07-21 | Laser rotary centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210865039.4A CN115235384A (en) | 2022-07-21 | 2022-07-21 | Laser rotary centering device |
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| Publication Number | Publication Date |
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| CN115235384A true CN115235384A (en) | 2022-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210865039.4A Pending CN115235384A (en) | 2022-07-21 | 2022-07-21 | Laser rotary centering device |
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