CN108581650B

CN108581650B - Ultrasonic longitudinal-torsional vibration grinding device

Info

Publication number: CN108581650B
Application number: CN201810322795.6A
Authority: CN
Inventors: 叶林征; 贺妍; 祝锡晶
Original assignee: North University of China
Current assignee: North University of China
Priority date: 2018-04-11
Filing date: 2018-04-11
Publication date: 2019-12-31
Anticipated expiration: 2038-04-11
Also published as: CN108581650A

Abstract

The utility model provides an supersound longitudinal-torsional vibration grinding device, casing including the tube-shape, the lower extreme opening is sealed to the casing upper end, set up the round hole in the middle of the casing up end, be equipped with the vertical axis in the casing, the vertical axis is coaxial with the casing central line, vertical axis from the top down has set gradually collecting ring and piezoceramics, piezoceramics inner circle is insulating hugs closely with the vertical axis outer peripheral face, through two first bearing swing joint between vertical axis and the casing, two first bearings are located piezoceramics upper and lower both sides respectively, piezoceramics is provided with interior spacer and outer spacer from inside to outside, interior spacer and outer spacer set up between two first bearings, the collecting ring includes brush and lead wire, collecting ring and piezoceramics electric connection. The ultrasonic ring energy device has the advantages that the integral sealing performance is high, the cutter shaft and the amplitude transformer are combined into a whole, the coaxiality error generated when the ultrasonic ring energy device is assembled with the amplitude transformer is eliminated, the machining precision is ensured, the service life is long, the ultrasonic ring energy device is not easy to damage, the ultrasonic ring energy device is convenient for workers to use, and the difficulty in machining workpieces is simplified.

Description

Ultrasonic longitudinal-torsional vibration grinding device

Technical Field

The invention belongs to the technical field of grinding processing equipment, and particularly relates to an ultrasonic longitudinal-torsional vibration grinding device.

Background

Carbon fiber and other composite materials have high strength, high temperature resistance, wear resistance, corrosion resistance and other excellent performances, and are widely applied to the fields of machinery, electronics, aviation, automobiles and the like. However, due to the characteristics, the processing difficulty of the composite materials such as carbon fibers is increased, and the traditional processing method has low processing efficiency and high cost and limits the further application of the composite materials such as carbon fibers. With the development of science and technology, special processing is produced and developed rapidly. The rotary ultrasonic vibration machining device is used for special machining, is high in rotary ultrasonic vibration machining efficiency and good in effect, and is widely applied to the field of machining of composite materials such as carbon fibers. The axial impact force of the rotary ultrasonic vibration grinding processing is too large, so that the processing effect of composite materials such as carbon fibers is influenced; the ultrasonic longitudinal-torsional vibration machining is not limited by the ultrasonic longitudinal-torsional vibration machining, so that the machining efficiency can be greatly improved, the cutting force is reduced, the quality of a machined surface is improved, the service life of a cutter is prolonged, the axial rigidity, the torsional rigidity and the bending rigidity of a cutter system can be improved, and a more excellent technological effect is achieved in the aspect of machining composite materials. The research on the longitudinal-torsional resonance ultrasonic processing device can greatly improve the industrial practicability of the ultrasonic grinding processing technology.

Most of the existing ultrasonic grinding devices do not have an automatic grinding fluid adjusting and supplying function, and due to the fact that a proper amount of grinding fluid is needed at a workpiece processing position during ultrasonic vibration grinding, the excessive grinding fluid can cause resource waste and is not beneficial to processing of the workpiece, and too little grinding fluid is difficult to cool the processing position in time.

Disclosure of Invention

The invention provides an ultrasonic longitudinal-torsional vibration grinding device, which is used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

an ultrasonic longitudinal-torsional vibration grinding device comprises a cylindrical shell, wherein the upper end of the shell is closed, the lower end of the shell is provided with an opening, a round hole is formed in the middle of the upper end face of the shell, a vertical shaft is arranged in the shell and is coaxial with the central line of the shell, a collecting ring and piezoelectric ceramics are sequentially arranged in series on the vertical shaft from top to bottom, an inner ring of the piezoelectric ceramics is closely attached to the outer peripheral surface of the vertical shaft in an insulating manner, the vertical shaft is movably connected with the shell through two first bearings which are respectively positioned at the upper side and the lower side of the piezoelectric ceramics, the piezoelectric ceramics are respectively provided with an inner spacer sleeve and an outer spacer sleeve from inside to outside, the inner spacer sleeve and the outer spacer sleeve are arranged between the two first bearings, the collecting ring comprises an electric brush and a lead wire, the collecting ring is electrically connected with the piezoelectric ceramics, two annular tubes with square sections are sleeved on the outer peripheral part of the vertical shaft close to the lower, the bottom surface of the annular pipe at the upper part and the top surface of the annular pipe at the lower part are respectively provided with two first through holes, the bottom surface of the annular pipe at the upper part and the two corresponding first through holes at the top surface of the annular pipe at the lower part are respectively connected through a vertical pipe, the end part of the vertical pipe is movably connected with the corresponding first through holes through a miniature sealing bearing, a planetary gear is fixedly sleeved in the middle of the vertical pipe, a driving gear is fixedly sleeved on a vertical shaft, the planetary gear is engaged and matched with the driving gear, the inner wall of the shell is fixedly provided with an annular gear, the teeth of the annular gear face inwards, the planetary gear is engaged and matched with the annular gear, a screw rod auger is fixedly arranged in the vertical pipe, the top surface of the annular pipe at the upper part is provided with an annular through groove, the annular through groove is coaxial with the central line of the annular pipe, the left, the lower end of the water outlet pipe is fixedly provided with an oblique inward spray head, the side part of the shell is provided with a third through hole, a water inlet pipe is fixedly arranged in the third through hole, the inner end of the water inlet pipe penetrates through the annular through groove and then is positioned in the annular pipe on the upper part, and the lower end of the vertical shaft is fixedly provided with a cutter.

According to the ultrasonic longitudinal-torsional vibration grinding device, the lower ends of the vertical pipes are respectively provided with the sealing plates, and the left side and the right side of each sealing plate are fixedly connected with the inner wall of the corresponding annular pipe through the springs.

According to the ultrasonic longitudinal-torsional vibration grinding device, the chuck is fixedly installed at the lower end of the vertical shaft, and the cutter is fixedly connected with the vertical shaft through the chuck.

According to the ultrasonic longitudinal-torsional vibration grinding device, the inner wall of the shell is provided with the convex ring convenient for bearing installation, and the convex ring and the shell are of an integral structure.

The invention has the advantages that: the upper end of the vertical shaft in the invention is a trapezoidal cone which can be matched with the main shaft of a common machine tool, so that the common machine tool can realize ultrasonic processing. When the ultrasonic grinding machine is used for ultrasonic grinding, the vertical shaft can make the vertical pipe revolve around the vertical shaft while rotating by the matching of the driving gear, the planetary gear and the annular teeth, the two annular pipes also rotate along with the vertical shaft, meanwhile, the grinding fluid is continuously injected into the annular pipes at the upper parts by the water inlet pipe, the self-transmitted vertical pipe can pump the grinding fluid in the annular pipes at the two upper parts into the annular pipes at the lower parts by driving the corresponding screw rod packing augers and is sprayed out to a workpiece processing position by the spray heads, the grinding fluid is sprayed out while the two spray heads rotate around the cutter, the uniform spraying of the grinding fluid to three hundred and sixty degrees at the workpiece processing position can be ensured, the rotating speed of the vertical pipe is changed along with the change of the vertical shaft, when the rotating speed of the vertical shaft is higher, more grinding fluid is needed to cool and remove dust at the workpiece processing position, the rotating speed of the vertical pipe is higher, the speed of the grinding fluid sprayed out, the ultrasonic ring energy device has the advantages that the automatic adjustment is realized, the waste of grinding fluid is avoided, the resources are saved, the workpiece processing position can be ensured to obtain enough grinding fluid, the cutter can be effectively protected from being damaged easily, and the grinding effect of the workpiece can be improved.

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 schematic structural view of the present invention; fig. 2 is a partially enlarged view of a portion i of fig. 1.

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.

An ultrasonic longitudinal-torsional vibration grinding device comprises a cylindrical shell 1, wherein the upper end of the shell 1 is closed, the lower end of the shell is open, a round hole 2 is formed in the middle of the upper end face of the shell 1, a vertical shaft 3 is arranged in the shell 1, the vertical shaft 3 is coaxial with the central line of the shell 1, a collecting ring 4 and piezoelectric ceramics 5 are sequentially arranged in series on the vertical shaft 3 from top to bottom, the inner ring of the piezoelectric ceramics 5 is closely attached to the outer peripheral face of the vertical shaft 3 in an insulating manner, the vertical shaft 3 is movably connected with the shell 1 through two first bearings 6, the two first bearings 6 are respectively positioned on the upper side and the lower side of the piezoelectric ceramics 5, the piezoelectric ceramics 5 is provided with an inner spacer 7 and an outer spacer 8 from inside to outside, the inner spacer 7 and the outer spacer 8 are arranged between the two first bearings 6, the collecting ring 4 comprises an electric brush 9 and a lead wire 10, the collecting ring 4 is electrically connected with the piezoelectric, the inner ring of the annular pipe 11 is movably connected with the vertical shaft 3 through a second bearing 12, the outer ring of the annular pipe 11 is movably connected with the inner wall of the shell 1 through a third bearing 13, the bottom surface of the annular pipe 11 positioned at the upper part and the top surface of the annular pipe 11 positioned at the lower part are respectively provided with two first through holes 30, the two corresponding first through holes 30 at the bottom surface of the annular pipe 11 positioned at the upper part and the top surface of the annular pipe 11 positioned at the lower part are respectively connected through a vertical pipe 14, the end part of the vertical pipe 14 is movably connected with the corresponding first through holes 30 through a miniature sealing bearing, a planetary gear 15 is fixedly sleeved in the middle of the vertical pipe 14, a driving gear 16 is fixedly sleeved on the vertical shaft 3, the planetary gear 15 is respectively meshed and matched with the driving gear 16, an annular tooth 17 is fixedly arranged on the inner wall of the shell 1, the tooth 17 faces inwards, the planetary gear 15 is respectively meshed and matched with, the top surface of the annular pipe 11 on the upper portion is provided with an annular through groove 19, the annular through groove 19 is coaxial with the central line of the annular pipe 11, the left side and the right side of the bottom surface of the annular pipe 11 on the lower portion are symmetrically provided with second through holes 20, vertical water outlet pipes 21 are fixedly arranged in the second through holes 20, lower ends of the water outlet pipes 21 are fixedly provided with oblique inward spray heads 22, the side portion of the shell 1 is provided with a third through hole 23, water inlet pipes 24 are fixedly arranged in the third through holes 23, the inner ends of the water inlet pipes 24 penetrate through the annular through groove 19 and then are arranged in the annular pipe 11 on the upper portion, and. The upper end of the vertical shaft 3 in the invention is a trapezoidal cone which can be matched with the main shaft of a common machine tool, so that the common machine tool can realize ultrasonic processing. When the ultrasonic grinding machine is used for ultrasonic grinding, the vertical shaft 3 can make the vertical pipe 14 revolve around the vertical shaft 3 while automatically transmitting through the matching of the driving gear 16, the planet gear 15 and the annular gear 17, the two annular pipes 11 also rotate along with the rotation, meanwhile, the grinding fluid is continuously injected into the annular pipe 11 at the upper part through the water inlet pipe 24, the automatically-transmitted vertical pipe 14 can be pumped into the annular pipe 11 at the lower part through the grinding fluid in the annular pipes 11 at the two upper parts by driving the corresponding screw rod packing auger 18 and is sprayed out to the workpiece processing position through the spray head 22, the grinding fluid is sprayed out by the two spray heads 22 while rotating around the cutter 27, the grinding fluid can be ensured to uniformly spray three hundred sixty degrees of dead angles at the workpiece processing position, the rotation speed of the vertical pipe 14 is changed along with the change of the vertical shaft 3, when the rotation speed of the vertical shaft 3 is higher, more grinding fluid is needed for temperature reduction and dust removal, the speed of the grinding fluid sprayed out of the spray head 22 is high, the speed of the grinding fluid sprayed out of the spray head 22 can change along with the change of the rotating speed of the vertical shaft 3, automatic adjustment is realized, the waste of the grinding fluid is avoided, resources are saved, enough grinding fluid can be obtained at a workpiece processing position, a cutter 27 can be effectively protected from being damaged easily, and the grinding effect of a workpiece can be improved.

Specifically, as shown in the drawings, the standpipe 14 of the present embodiment is provided with sealing plates 25 at the lower ends thereof, and the left and right sides of the sealing plates 25 are fixedly connected to the inner walls of the corresponding annular pipes 11 through springs 26. When the vertical pipe type grinder is not in operation, the lower end of the corresponding vertical pipe 14 can be sealed by the sealing plate 25 under the action of the elastic force of the spring 26, grinding liquid is prevented from flowing out automatically, when the vertical pipe type grinder starts to operate, the vertical pipe 14 drives the grinding liquid to move downwards by driving the screw rod packing auger 18 to rotate, the grinding liquid flowing downwards pushes the sealing plate 25 away, and then is sprayed out through the spray head 22, the grinding liquid can push the sealing plate 25 away by a certain force, the grinding liquid can be prevented from being sprayed out at an excessively high speed through the design, different spraying speeds of the grinding liquid can be obtained by selecting the spring 26 with a proper type, and selection can be performed according to the actual operation requirement.

Specifically, as shown in the figure, a chuck 28 is fixedly installed at the lower end of the vertical shaft 3, and the cutter 27 is fixedly connected with the vertical shaft 3 through the chuck 28. This design facilitates the replacement of the tool 27.

Further, as shown in the figure, a protruding ring 29 for facilitating the installation of the bearing is disposed on the inner wall of the housing 1, and the protruding ring 29 and the housing 1 are integrated. This design facilitates the positioning and mounting of the bearings inside the housing 1.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an supersound longitudinal-torsional vibration grinding device which characterized in that: the piezoelectric ceramic power generator comprises a cylindrical shell (1), wherein the upper end of the shell (1) is closed, the lower end of the shell is open, a round hole (2) is formed in the middle of the upper end face of the shell (1), a vertical shaft (3) is arranged in the shell (1), the vertical shaft (3) is coaxial with the central line of the shell (1), a collector ring (4) and piezoelectric ceramic (5) are sequentially arranged in series from top to bottom on the vertical shaft (3), the inner ring of the piezoelectric ceramic (5) is closely attached to the outer peripheral surface of the vertical shaft (3) in an insulating manner, the vertical shaft (3) is movably connected with the shell (1) through two first bearings (6), the two first bearings (6) are respectively located on the upper side and the lower side of the piezoelectric ceramic (5), an inner spacer sleeve (7) and an outer spacer sleeve (8) are arranged on the piezoelectric ceramic (5) from inside to outside, the inner spacer sleeve (7) and the outer spacer sleeve (8) are arranged between the two first bearings (6), the collector ring (4) comprises, two annular pipes (11) with square sections are sleeved on the periphery of the vertical shaft (3) close to the lower end, the inner ring of each annular pipe (11) is movably connected with the vertical shaft (3) through a second bearing (12), the outer ring of each annular pipe (11) is movably connected with the inner wall of the shell (1) through a third bearing (13), two first through holes (30) are respectively formed in the bottom surface of each annular pipe (11) on the upper part and the top surface of each annular pipe (11) on the lower part, the two corresponding first through holes (30) on the bottom surface of each annular pipe (11) on the upper part and the top surface of each annular pipe (11) on the lower part are respectively connected through a vertical pipe (14), the end part of each vertical pipe (14) is movably connected with the corresponding first through holes (30) through a miniature sealing bearing, planetary gears (15) are fixedly sleeved in the middle of each vertical pipe (14), and driving gears (16) are fixedly sleeved on the vertical shaft, planetary gear (15) all cooperates with the meshing of driving gear (16), casing (1) inner wall fixed mounting annular tooth (17), the tooth of annular tooth (17) is inwards, planetary gear (15) all cooperates with annular tooth (17) meshing, all fixed mounting hob auger (18) in standpipe (14), annular pipe (11) top surface that is located the upper portion is seted up annular and is passed groove (19), annular is passed groove (19) and is coaxial with annular pipe (11) central line, annular pipe (11) bottom surface left and right sides symmetry of being located the lower part is seted up second through-hole (20), all fixed mounting vertical outlet pipe (21) in second through-hole (20), the lower extreme of outlet pipe (21) all fixed mounting nozzle (22) of slant, casing (1) lateral part is seted up third through-hole (23), fixed mounting inlet tube (24) in third through-hole (23), the inner of inlet tube (24) passes annular and passes groove (19) and then is located the annular pipe (11) on upper portion inside, the lower end of the vertical shaft (3) is fixedly provided with a cutter (27).

2. An ultrasonic longitudinal torsional vibration grinding apparatus as defined in claim 1, wherein: the lower end of the vertical pipe (14) is provided with a sealing plate (25), and the left side and the right side of the sealing plate (25) are fixedly connected with the inner wall of the corresponding annular pipe (11) through springs (26).

3. An ultrasonic longitudinal torsional vibration grinding apparatus as defined in claim 1, wherein: the lower end of the vertical shaft (3) is fixedly provided with a chuck (28), and the cutter (27) is fixedly connected with the vertical shaft (3) through the chuck (28).

4. An ultrasonic longitudinal torsional vibration grinding apparatus as defined in claim 1, wherein: the inner wall of the shell (1) is provided with a convex ring (29) convenient for bearing installation, and the convex ring (29) and the shell (1) are of an integral structure.