阅读说明：本技术 一种用于数控磨床的砂轮在位修整装置 (Grinding wheel in-place dressing device for numerically controlled grinder ) 是由 董志刚 康仁科 李干 鲍岩 于 2021-07-28 设计创作，主要内容包括：本发明提供一种用于数控磨床的砂轮在位修整装置及修整方法。本发明包括砂轮修整轮、砂轮修整轴、修整直线轴和修整回转轴,所砂轮修整轮可拆卸地连接在砂轮修整轴上,所述砂轮修整轴连接在修整轴壳体上,修整轴壳体的底端固定连接在所述修整直线轴上,所述修整直线轴的底端转动连接在所述修整回转轴上,通过数控系统的修整轴控制器控制砂轮修整轴轴做旋转运动,通过数控系统的直线轴控制器控制修整直线轴做直线运动,通过数控系统的回转轴控制器控制修整回转轴做旋转运动,通过三者运动实现复杂型面砂轮的在线修整。本发明各组件均通过高强螺栓连接,方便安装与拆卸。整体结构简便,对控制系统要求较低,适用于多种修整工况,有利于实现工业化。(The invention provides a grinding wheel in-place dressing device and a dressing method for a numerical control grinding machine. The device comprises a grinding wheel trimming wheel, a grinding wheel trimming shaft, a trimming linear shaft and a trimming rotating shaft, wherein the grinding wheel trimming wheel is detachably connected to the grinding wheel trimming shaft, the grinding wheel trimming shaft is connected to a trimming shaft shell, the bottom end of the trimming shaft shell is fixedly connected to the trimming linear shaft, the bottom end of the trimming linear shaft is rotatably connected to the trimming rotating shaft, the grinding wheel trimming shaft is controlled to rotate by a trimming shaft controller of a numerical control system, the trimming linear shaft is controlled to linearly move by a linear shaft controller of the numerical control system, the trimming rotating shaft is controlled to rotate by a rotating shaft controller of the numerical control system, and the complex profile grinding wheel is trimmed online by the three motions. All the components of the invention are connected through high-strength bolts, thus being convenient for installation and disassembly. The overall structure is simple and convenient, the requirement on a control system is low, and the method is suitable for various finishing working conditions and is beneficial to realizing industrialization.)

1. The grinding wheel in-place dressing device for the numerical control grinding machine is characterized by comprising a grinding wheel dressing wheel, a grinding wheel dressing shaft, a dressing linear shaft and a dressing rotating shaft, wherein the grinding wheel dressing wheel is detachably connected to the grinding wheel dressing shaft, the grinding wheel dressing shaft is connected to a dressing shaft shell, the bottom end of the dressing shaft shell is fixedly connected to the dressing linear shaft, the bottom end of the dressing linear shaft is rotatably connected to the dressing rotating shaft, the grinding wheel dressing shaft is controlled to rotate through a dressing shaft controller of a numerical control system, the dressing linear shaft is controlled to linearly move through a linear shaft controller of the numerical control system, the dressing rotating shaft is controlled to rotate through a rotating shaft controller of the numerical control system, and online dressing of a complex profile grinding wheel is realized through the three motions.

2. The grinding wheel in-place dressing device for the numerically controlled grinding machine as claimed in claim 1, wherein the grinding wheel dressing wheel is a grooved electroplated diamond grinding wheel.

3. The grinding wheel dressing apparatus in place for a numerically controlled grinding machine as claimed in claim 1, said complex-profile grinding wheel comprising a spherical grinding wheel, a circular arc grinding wheel, a V-shaped grinding wheel and a cup/cylinder grinding wheel.

4. The grinding wheel in-place dressing device for the numerically controlled grinding machine as claimed in claim 1, wherein the bottom end of said dressing revolving shaft is mounted on the numerically controlled grinding machine, specifically, it is connected to the guide rail connecting plate of the grinding machine by fastening bolts, and the grinding wheel in-place dressing device and the main shaft of the grinding machine are disposed on the same side of the guide rail.

5. The grinding wheel dressing apparatus for a numerically controlled grinding machine according to claim 1, wherein the center of rotation of the grinding wheel profile to be dressed is shifted to the center of rotation of the rotation axis during dressing of the grinding wheel.

6. The grinding wheel in-place dressing device for the numerically controlled grinding machine according to claim 1, wherein the dressing linear shaft comprises a main body part and a sliding part, a track is arranged on the main body part, the sliding part can slide in the track, and the top end of the sliding part is fixedly connected with the dressing shaft shell; the bottom end of the main body part is fixed on the finishing rotating shaft through a bolt and a rotating shaft adapter plate.

7. An in-place dressing method of a grinding wheel in-place dressing device for a numerically controlled grinding machine according to any one of claims 1 to 6, characterized by comprising the steps of:

step 1, selecting a grinding wheel dressing wheel based on a to-be-repaired miscellaneous profile grinding wheel, and installing the grinding wheel dressing wheel on a grinding wheel dressing shaft;

step 2, mounting the grinding wheel with the miscellaneous profile to be repaired on a grinding machine, and moving a guide rail of the grinding machine during dressing to ensure that the grinding wheel is superposed with the rotation center of a dressing rotating shaft;

step 3, adjusting and trimming the linear shaft, and fixing the position of the trimming linear shaft after the end surface of the wheel to be trimmed is tangent to the profile surface of the grinding wheel of the miscellaneous profile surface to be trimmed;

and 4, controlling the rotary motion of the trimming rotary shaft in the motion range to realize the trimming of the grinding wheel with the miscellaneous profile to be trimmed.

Technical Field

The invention relates to the technical field of grinding wheel grinding, in particular to a grinding wheel in-place dressing device for a numerical control grinding machine.

Background

The surface profile of the complex curved surface part is determined by the shape of the grinding wheel, and the shape precision of the grinding wheel is directly influenced by the dressing precision of the grinding wheel. The grinding wheel of the numerical control grinding machine is worn after being used for a period of time in the grinding process, and the surface shape of the grinding wheel is ensured by adopting a grinding wheel finishing method.

The existing grinding wheel dressing technology is single, a forming dresser can only dress grinding wheels with specific shapes, the dresser needs to be customized independently when the shape of the grinding wheel changes, the price is high, and the application is single; when the single-point diamond pen is used for trimming the arc grinding wheel with hard tissue, the diamond pen is easy to wear, and the shape of the grinding wheel cannot be guaranteed; in the process of dressing the grinding wheel, the grinding wheel needs to be taken out of a numerical control machine tool, and repeated installation causes installation errors and tool setting errors, so that dressing efficiency is extremely low; the prior grinding wheel dressing technology can not meet the requirements of grinding wheel grinding in precision grinding.

Disclosure of Invention

The invention aims to overcome the technical defects and shortcomings of single grinding wheel applicability, low dressing efficiency, poor dressing precision and the like of the conventional grinding wheel dressing device, and provides a grinding wheel in-situ dressing device for a numerical control grinding machine. The technical means adopted by the invention are as follows:

the grinding wheel in-place dressing device for the numerical control grinding machine comprises a grinding wheel dressing wheel, a grinding wheel dressing shaft, a dressing linear shaft and a dressing rotating shaft, wherein the grinding wheel dressing wheel is detachably connected to the grinding wheel dressing shaft, the grinding wheel dressing shaft is connected to a dressing shaft shell, the bottom end of the dressing shaft shell is fixedly connected to the dressing linear shaft, the bottom end of the dressing linear shaft is rotatably connected to the dressing rotating shaft, the grinding wheel dressing shaft is controlled to rotate by a dressing shaft controller of a numerical control system, the dressing linear shaft is controlled to linearly move by a linear shaft controller of the numerical control system, the dressing rotating shaft is controlled to rotate by a rotating shaft controller of the numerical control system, and online dressing of a grinding wheel with a complex profile is realized by the three components.

Further, the grinding wheel dressing wheel is a grooved electroplated diamond grinding wheel.

Further, the complex-profile grinding wheel comprises a spherical grinding wheel, a circular arc grinding wheel, a V-shaped grinding wheel and a cup/cylinder grinding wheel.

Further, the bottom end of the trimming rotating shaft is installed on a numerical control grinding machine, specifically, the trimming rotating shaft is connected to a connecting plate of a guide rail of the grinding machine through a fastening bolt, and the grinding wheel in-place trimming device and the main shaft of the grinding machine are arranged on the same side of the guide rail of the grinding machine.

Further, when the grinding wheel is trimmed, the rotation center of the profile of the grinding wheel to be trimmed is moved to the rotation center of the rotation shaft.

Furthermore, the trimming linear shaft comprises a main body part and a sliding part, wherein the main body part is provided with a track, the sliding part can slide in the track, and the top end of the sliding part is fixedly connected with the trimming shaft shell; the bottom end of the main body part is fixed on the finishing rotating shaft through a bolt and a rotating shaft adapter plate.

The invention also discloses an in-situ dressing method for the complex profile grinding wheel of the numerically controlled grinder, which comprises the following steps:

step 1, selecting a grinding wheel dressing wheel based on a to-be-repaired miscellaneous profile grinding wheel, and installing the grinding wheel dressing wheel on a grinding wheel dressing shaft;

step 2, mounting the grinding wheel with the miscellaneous profile to be repaired on a grinding machine, and moving a guide rail of the grinding machine during dressing to ensure that the grinding wheel is superposed with the rotation center of a dressing rotating shaft;

step 3, adjusting and trimming the linear shaft, and fixing the position of the trimming linear shaft after the end surface of the wheel to be trimmed is tangent to the profile surface of the grinding wheel of the miscellaneous profile surface to be trimmed;

and 4, controlling the rotary motion of the trimming rotary shaft in the motion range to realize the trimming of the grinding wheel with the miscellaneous profile to be trimmed.

The invention has the following advantages: the invention can realize the dressing of grinding wheels of different materials by replacing the grinding wheel dressing wheel; the dressing of the rotary type surface such as a spherical and disc-shaped grinding wheel can be realized by dressing the linear shaft and dressing the rotary shaft; the dressing of the grinding wheel with the irregular complex profile can be further realized through the linkage of a numerical control system. The in-place finishing device has the characteristics of universality, small size, multiple functions, high finishing efficiency and the like, can be adapted to numerical control grinding machines of various models, and further meets different grinding machining requirements aiming at different machining materials and application occasions. All the components of the invention are connected through high-strength bolts, thus being convenient for installation and disassembly. The overall structure is simple and convenient, the requirement on a control system is low, and the method is suitable for various finishing working conditions and is beneficial to realizing industrialization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a system diagram of the numerical control system of the present invention.

Fig. 2 is a schematic view of the present invention mounted on a grinding machine.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is a schematic diagram of the dressing motion of the present invention with the rotating shaft in place.

Fig. 5 is a schematic view of the dressing motion of the present invention, wherein the rotating shaft is rotated 90 degrees.

In the figure: 1. a grinding wheel in-place dressing device; 2. a grinding machine spindle; 3. a chip pocket; 4. grinding machine guide rails; 5. a grinding wheel dressing wheel; 6. trimming the shaft by using a grinding wheel; 7. trimming the linear shaft; 8. trimming the rotating shaft; 9. a linear axis controller; 10. a rotary shaft controller; 11. trimming the shaft housing; 12. a rotating shaft adapter plate; 13. the rotating center of the rotating shaft; 14. the axis of the shaft is trimmed by a grinding wheel; 15. a hemispherical grinding wheel; 16. and (5) grinding wheel finishing points.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 3, an in-place dressing device for a grinding wheel of a numerically controlled grinding machine comprises a grinding wheel dressing wheel, a grinding wheel dressing shaft, a dressing linear shaft and a dressing rotating shaft, wherein the grinding wheel dressing wheel 5 is detachably connected to the grinding wheel dressing shaft 6, in the embodiment, the grinding wheel dressing wheel is fixedly connected to the grinding wheel dressing shaft through a thread, the grinding wheel dressing shaft is connected to a dressing shaft housing 11, in the embodiment, the grinding wheel dressing shaft is clamped on the dressing shaft housing, the parallelism of the axes of the dressing shafts is ensured through tolerance fit, the bottom end of the dressing shaft housing is fixedly connected to the dressing linear shaft, the bottom end of the dressing linear shaft 7 is rotatably connected to the dressing rotating shaft 8, the grinding wheel dressing shaft is controlled to rotate by a dressing shaft controller of the numerically controlled system, the dressing linear shaft is controlled to linearly move by a linear shaft controller 9 of the numerically controlled system, the rotary shaft controller 10 of the numerical control system controls the dressing rotary shaft to rotate, and the online dressing of the grinding wheel with the complex profile is realized through the movement of the dressing rotary shaft controller, the rotary shaft controller and the rotary shaft controller. The wheel dresser wheel is mounted on the wheel dresser shaft axis 14. The invention can realize the dressing of various irregular complex profile grinding wheels by linking the dressing linear shaft 7 and the dressing rotating shaft 8 under the machine tool coordinate system, thereby meeting different grinding requirements aiming at different processing materials and application occasions.

Specifically, as shown in fig. 1, the grinding wheel dressing shaft is connected to a dressing linear shaft through a dressing shaft housing, the dressing linear shaft is directly controlled by the numerically controlled grinder through a servo driver, and the rotation diameter of the grinding wheel profile is controlled through micron-sized precision feeding.

The trimming straight shaft is connected to the trimming rotating shaft through a rotating shaft adapter plate 12, the trimming rotating shaft is directly controlled by the numerical control grinding machine through a servo driver, the control of the rotating range of the profile of the grinding wheel is realized through the rotating motion and the limiting function of the numerical control system, and meanwhile, the trimming error caused by interpolation motion of a common grinding wheel in-place trimming device is avoided.

The grinding wheel trimming shaft, the trimming linear shaft and the trimming rotating shaft can be further trimmed by linkage of a numerical control system, and the external independent control can also be directly realized by an industrial personal computer.

The motion form of the grinding wheel in-place dressing device of the numerically controlled grinding machine is realized by the motion of a dressing linear shaft 7 and a dressing rotating shaft 8. The coordinate of the revolving shaft rotation center 13 is input into a grinding machine numerical control system in advance, and when the grinding wheel is dressed, the rotation center of the grinding wheel profile to be dressed is moved to the revolving shaft rotation center 13 through the guide rail movement of the numerical control grinding machine, so that the two are superposed; and then the dressing of the grinding wheel is realized by adjusting the dressing linear shaft 7 and the dressing rotating shaft 8. The dressing linear shaft 7 can adjust the turning radius, namely the radius of the dressing grinding wheel, and the dressing turning shaft 8 can adjust the turning range, namely the arc length of the grinding wheel; in the dressing process, the dressing linear shaft 7 is locked and does not move, the dressing of the profile of the grinding wheel to be dressed is realized by controlling the rotation of the dressing rotating shaft 8, and as shown in fig. 4 and 5, interpolation errors are not introduced, so that the grinding wheel dressing precision of the device is higher than that of the conventional grinding wheel dressing device.

The grinding wheel dressing wheel is a grooved electroplated diamond grinding wheel, so that the chip containing space is increased, the dressing efficiency is improved, the service life of the dressing wheel is prolonged, and the dressing precision can be improved by replacing the grinding wheel dressing wheel when the dressing precision is reduced due to large abrasion of the grinding wheel dressing wheel in the dressing process. The dressing wheel matched with the grinding wheel can be selected according to the material of the grinding wheel.

The complex-profile grinding wheel comprises a spherical grinding wheel, an arc grinding wheel, a V-shaped grinding wheel and a cup-shaped/cylindrical grinding wheel.

As shown in fig. 2, the grinding wheel dressing apparatus 1 may be mounted on a numerically controlled grinding machine. The bottom end of the trimming rotating shaft is arranged on a numerical control grinding machine, specifically, the trimming rotating shaft is connected to a guide rail connecting plate of the grinding machine through a fastening bolt, and the grinding wheel in-place trimming device 1 and the grinding machine spindle 2 are arranged on the same side of a guide rail 4 of the grinding machine.

When the grinding wheel is dressed, the rotation center of the profile of the grinding wheel to be dressed moves to the rotation center of the rotation shaft.

The trimming linear shaft comprises a main body part and a sliding part, wherein the main body part is provided with a track, the sliding part can slide in the track, and the top end of the sliding part is fixedly connected with the trimming shaft shell; the bottom end of the main body part is fixed on the finishing rotating shaft through a bolt and a rotating shaft adapter plate.

In addition, in addition to the profile of the revolution type surface, the invention also realizes the dressing of the grinding wheel with complex profile and irregular profile by the linkage of the numerical control grinding machine and the dressing device, and obtains good dressing effect. Typically, for example, in the dressing of a cup-shaped grinding wheel, the rotating shaft 8 can be fixedly dressed in the dressing process, the dressing wheel is replaced by the cup-shaped grinding wheel to dress the end face of the cup-shaped grinding wheel to be dressed, and the dressing wheel is replaced by the disc grinding wheel to dress the circumferential surface of the grinding wheel to be dressed; for the trimming of the V-shaped or butterfly-shaped grinding wheel, the trimming rotating shaft 8 can be fixed into a half angle of the V-shaped butterfly-shaped grinding wheel in the trimming process, the single-side trimming of the V-shaped or butterfly-shaped grinding wheel is realized through the unidirectional feeding of the numerical control grinding machine, the fixed angle of the trimming rotating shaft 8 is adjusted, and the trimming of the grinding wheel on the other side can be realized; the grinding wheel in-place dressing device also has certain dressing capacity for common special-shaped grinding wheels, and is very flexible to use.

In addition, the grinding wheel in-place dressing device can be subjected to linkage control in a numerical control system of the grinding machine, and can also be directly controlled outside the numerical control system by independently externally connecting an industrial personal computer, so that the universality of the device is greatly improved.

The invention realizes the dressing of complex profile grinding wheels such as spherical grinding wheels, circular arc grinding wheels, V-shaped grinding wheels and cup-shaped/cylindrical grinding wheels through the rotary motion of a grinding wheel dressing shaft, the linear motion of dressing linear shafts and the rotary motion of a dressing rotating shaft, and the dressing principle is as follows:

step 1, selecting a grinding wheel dressing wheel based on a to-be-repaired miscellaneous profile grinding wheel, and installing the grinding wheel dressing wheel on a grinding wheel dressing shaft;

step 2, mounting the grinding wheel with the miscellaneous profile to be repaired on a grinding machine, and moving a guide rail of the grinding machine during dressing to ensure that the grinding wheel is superposed with the rotation center of a dressing rotating shaft;

step 3, adjusting and trimming the linear shaft, and fixing the position of the trimming linear shaft after the end surface of the wheel to be trimmed is tangent to the profile surface of the grinding wheel of the miscellaneous profile surface to be trimmed;

and 4, controlling the rotary motion of the trimming rotary shaft in the motion range to realize the trimming of the grinding wheel with the miscellaneous profile to be trimmed.

Specifically, dressing of the hemispherical grinding wheel 15: the dressing wheel 5 adopts a disc or cup-shaped dressing wheel, the movement length of the dressing linear shaft 7 is adjusted according to the radius of the grinding wheel, and the movement range of the dressing rotating shaft 8 is determined according to the arc range of the spherical grinding wheel. Moving the grinding machine guide rail 4 during dressing to ensure that the spherical center of the spherical grinding wheel is superposed with the rotary center 13 of the dressing rotating shaft; and then adjusting the trimming linear shaft 7, fixing the position of the trimming linear shaft 7 after the end surface of the wheel 5 to be trimmed is tangent to the profile surface of the spherical grinding wheel, namely the grinding wheel trimming point 16, controlling the rotary motion of the trimming rotary shaft 8 in the motion range to realize the trimming of the spherical grinding wheel, and enabling trimmed waste materials to fall into a chip groove 3 of the grinding machine.

Trimming the arc grinding wheel: the dressing wheel 5 adopts a disc-shaped or cup-shaped dressing wheel, the movement length of the dressing linear shaft 7 is adjusted according to the radius of the circular arc grinding wheel fillet, and the movement range of the dressing rotating shaft 8 is determined according to the circular arc grinding wheel fillet range. Moving the grinding machine guide rail 4 during dressing to ensure that the arc center of the arc grinding wheel is superposed with the rotation center of the dressing rotating shaft 8; and then adjusting the trimming linear shaft 7, fixing the position of the trimming linear shaft 7 after the end surface of the wheel 5 to be trimmed is tangent to the profile surface of the spherical grinding wheel, and controlling the rotary motion of the trimming rotary shaft 8 in the motion range to realize the trimming of the arc grinding wheel.

And (3) finishing the V-shaped grinding wheel: the dressing wheel 5 adopts a disc-shaped or spherical dressing wheel, the revolving angle of the dressing revolving shaft 8 is determined according to the profile of the V-shaped grinding wheel, the revolving angle of the dressing revolving shaft 8 is fixed in the dressing process, the grinding machine guide rail 4 is moved to ensure that the profile of the V-shaped grinding wheel is tangent to the edge of the dressing wheel 5, and the interpolation motion of the grinding machine guide rail is used for controlling the V-shaped grinding wheel to move along the parallel line of the profile to realize the dressing of the profile on one side of the V-shaped grinding wheel; and then determining a turning angle of a trimming rotating shaft 8 according to the profile of the second side of the V-shaped grinding wheel, trimming the turning angle of the trimming rotating shaft 8 again, moving the grinding machine guide rail 4 to ensure that the profile of the other side of the V-shaped grinding wheel is tangent to the edge of the trimming wheel 5, controlling the V-shaped grinding wheel to move along the parallel line of the profile of the other side through interpolation motion of the grinding machine guide rail to realize the trimming of the profile of the other side of the V-shaped grinding wheel, and finally realizing the trimming of the V-shaped grinding wheel.

S4 dressing of cup/cylinder grinding wheel: the dressing wheel 5 adopts a disc-shaped dressing wheel, the dressing rotating shaft in-situ 8 is fixed during dressing, the grinding machine guide rail 4 is moved, the cylindrical surface of the cup-shaped grinding wheel is controlled to be in contact with the cylindrical surface of the disc-shaped dressing wheel, and the cylindrical surface of the cup-shaped grinding wheel is linearly moved along the cylindrical surface of the disc-shaped dressing wheel for dressing; and after finishing the cylindrical surface of the cup-shaped grinding wheel, moving the cup-shaped grinding wheel backwards, rotating the in-situ 8 of the finishing rotating shaft 8 by 90 degrees and fixing, moving the guide rail 4 of the grinding machine, controlling the end surface of the cup-shaped grinding wheel to be in contact with the cylindrical surface of the disc-shaped finishing wheel, and controlling the end surface of the cup-shaped grinding wheel to linearly move along the cylindrical surface of the disc-shaped finishing wheel to finish the end surface of the cup-shaped grinding wheel so as to finish the cup-shaped grinding wheel.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.