CN107838800B

CN107838800B - Polishing machine

Info

Publication number: CN107838800B
Application number: CN201710984921.XA
Authority: CN
Inventors: 邹晓洪; 史旭峰; 尹盛星
Original assignee: Dongguan Xinmeiyang Technology Co Ltd
Current assignee: Dongguan xinmeiyang Technology Co., Ltd
Priority date: 2017-10-20
Filing date: 2017-10-20
Publication date: 2020-04-07
Anticipated expiration: 2037-10-20
Also published as: CN107838800A

Abstract

The invention relates to a polishing machine, which comprises a workbench, an ultrasonic generator, a working head and a swinging mechanism, wherein the workbench is provided with a working pool for containing a polishing medium, the swinging mechanism comprises a swinging piece and a driving piece, the swinging piece is partially arranged in the polishing medium and used for bearing a workpiece, the driving piece is connected with the swinging piece and drives the swinging piece to swing, the ultrasonic generator is arranged on the workbench and connected with the working head, and the working head can extend into the polishing medium to transmit high-frequency vibration to the workpiece. The working pool of the polishing machine is filled with polishing medium, the workpiece is placed on the swinging piece in the polishing medium, and the working head connected with the ultrasonic generator extends into the polishing medium to transmit high-frequency vibration to the workpiece. When the working head drives the polishing medium to vibrate under the action of the ultrasonic generator, the polishing medium surrounds the workpiece, irregular workpieces and special dead angles of the workpieces can be well polished, and the swinging piece can drive the workpieces arranged on the swinging piece to swing in the polishing medium, so that the polishing precision is improved.

Description

Polishing machine

Technical Field

The invention relates to grinding and polishing of a workpiece surface, in particular to a polishing machine.

Background

Polishers, also known as grinders, are often used for mechanical grinding, polishing, and waxing. The working principle is as follows: the motor drives the sponge or wool polishing disc arranged on the polishing machine to rotate at a high speed, and the polishing disc and the polishing agent act together and rub the surface to be polished, so that the aims of removing paint surface pollution, oxide layer and shallow mark can be achieved. The rotation speed of the polishing disk is generally 1500-3000r/min, and is mostly continuously variable, and can be adjusted at any time during construction according to requirements. However, the traditional polishing machine has low working efficiency and precision, and cannot well treat irregular workpieces or dead angles of the workpieces.

Disclosure of Invention

Therefore, it is necessary to provide a polishing machine with high efficiency and precision to solve the problem of low work efficiency and precision of the conventional polishing machine.

A polishing machine comprises a workbench, an ultrasonic generator, a working head and a swinging mechanism, wherein a working pool containing polishing media is arranged on the workbench, the swinging mechanism comprises a swinging piece and a driving piece, the swinging piece is partially arranged in the polishing media and used for supporting a workpiece, the driving piece is connected with the swinging piece and drives the swinging piece to swing, the ultrasonic generator is arranged on the workbench and connected with the working head, and the working head can stretch into the polishing media to transmit high-frequency vibration to the workpiece.

The working pool of the polishing machine is filled with polishing medium, the workpiece is placed on the swinging piece in the polishing medium, and the working head connected with the ultrasonic generator extends into the polishing medium to transmit high-frequency vibration to the workpiece. When the working head drives the polishing medium to vibrate under the action of the ultrasonic generator, the polishing medium surrounds the workpiece, irregular workpieces and special dead angles of the workpieces can be well polished, and the polishing precision of the polishing machine is improved. And the workpiece is borne on the part of the swinging piece extending into the polishing medium, the driving piece drives the swinging piece to swing, and the swinging piece can drive the workpiece arranged on the swinging piece to swing in the polishing medium so as to ensure that the surface of the workpiece is uniformly polished.

In one embodiment, the swing member includes a first swing arm, a second swing arm, and a bearing portion, the bearing portion is disposed in the working pool and connected between the first swing arm and the second swing arm, one of the first swing arm and the second swing arm is connected to the driving member, and the other is connected to the working table through the swing shaft, so that the first swing arm or the second swing arm connected to the driving member can be driven by the driving member to swing around the swing shaft in a reciprocating manner in a plane perpendicular to the axis of the swing shaft.

In one embodiment, the swing mechanism further includes a first supporting table and a second supporting table, a first side wall and a second side wall are disposed on the working table, the first side wall and the second side wall surround the working pool and are disposed oppositely, the first supporting table and the second supporting table are disposed on the first side wall and the second side wall respectively, the first swing arm and the second swing arm are supported on the first supporting table and the second supporting table respectively, the driving member is disposed on the first side wall, an output shaft of the driving member penetrates through the first supporting table and is connected with the first swing arm, and the swing shaft is disposed on the second supporting table and is rotatably connected with the second swing arm, so that the first swing arm swings around the swing shaft under the driving of the driving member.

In one embodiment, the first support table includes a mounting member and a guide plate, the mounting member has a guide slot, the guide plate is connected to the first swing arm and movably received in the guide slot, and an output end of the driving member passes through the mounting member and is connected to the guide plate to drive the guide plate to move in the guide slot and drive the first swing arm to swing.

In one embodiment, the guide groove is formed by enclosing a bottom wall and a side wall, a plurality of balls are arranged on the bottom wall, and the guide plate is arranged on the balls and has a preset clearance with the side wall.

In one embodiment, the first swing arm and the second swing arm are both L-shaped pieces, one end of each L-shaped piece extends into the working pool and is connected with the bearing part, and the other end of each L-shaped piece extends out of the working pool and is connected with the corresponding driving piece or the corresponding swing shaft.

In one embodiment, the polishing medium is formed by mixing a polishing solution and an abrasive.

In one embodiment, the ultrasonic generator further comprises a lifting mechanism, and the lifting mechanism is arranged on the workbench and connected with the ultrasonic generator so as to drive the ultrasonic generator and the working head to lift relative to the swinging piece.

In one embodiment, the lifting mechanism comprises a guide rod, a movable plate and a locking piece, the guide rod is perpendicular to the workbench, the ultrasonic generator is fixed on the movable plate, the movable plate is sleeved outside the guide rod and can lift along the guide rod, and the locking piece is used for fixing the movable plate on the guide rod.

In one embodiment, the ultrasonic generator comprises a transducer and a horn connected between the transducer and the working head.

Drawings

FIG. 1 is a schematic view of a polishing machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the polishing machine of FIG. 1;

fig. 3 is an exploded view of a part of the structure of the polishing machine shown in fig. 2.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-3, a polishing machine 100 according to an embodiment of the present invention includes a work bench 10, an ultrasonic generator 30, a working head 50, and a swing mechanism 70, wherein a work pool 11 for containing a polishing medium is disposed on the work bench 10, the swing mechanism 70 includes a swing member 72 and a driving member 74, the swing member 72 is partially disposed in the polishing medium for carrying a workpiece, the driving member 74 is connected to the swing member 72 and drives the swing member 72 to swing, the ultrasonic generator 30 is disposed on the work bench 10 and connected to the working head 50, and the working head 50 can extend into the polishing medium to transmit high-frequency vibration to the workpiece.

The polishing medium is contained in the working tank 11 of the polishing machine 100, the workpiece is placed on the oscillating member 72 in the polishing medium, and the working head 50 connected with the ultrasonic generator 30 extends into the polishing medium to transmit high-frequency vibration to the workpiece. Therefore, when the working head 10 drives the polishing medium to vibrate under the action of the ultrasonic generator 30, the polishing medium surrounds the workpiece, so that irregular workpieces and special dead corners of the workpieces can be well polished, and the polishing precision of the polishing machine 100 is improved. Moreover, the workpiece is carried on the part of the oscillating piece 72 extending into the polishing medium, the driving piece 74 drives the oscillating piece 72 to oscillate, and the oscillating piece 72 can drive the workpiece arranged on the oscillating piece to oscillate in the polishing medium, so as to ensure that the surface of the workpiece is uniformly polished.

Under the action of the ultrasonic generator 30 connected with the working head 50, each mass point on the working head 50 vibrates back and forth at the vibration frequency of 2 to 2 ten thousand times per second, so that polishing particles are cut on a polishing surface for 2 to 5 ten thousand times in one second. Although the displacement amplitude of the particle motion is very small, the frequency is extremely high, so that the removal amount of polishing is greatly increased, and the working efficiency is greatly improved. And because the amplitude is very small and consistent, uniform scratches are rapidly generated on the surface of the workpiece to be polished, and the polished surface with high smoothness and high precision is obtained. Specifically, the working head 50 is made of calomel 7075, has high strength, and has good mechanical properties and corrosion resistance.

Moreover, the gap between the working head 50 and the workpiece can be set according to the polishing surface required by the actual workpiece of the workpiece, and the working head 10 can be provided with a certain gap with the workpiece to polish the workpiece by driving the polishing medium to vibrate, or can directly contact with the workpiece to polish the surface of the workpiece, and simultaneously polish the workpiece by driving the polishing medium to vibrate, which is not limited herein.

Further, the polishing medium is formed by mixing a polishing solution and an abrasive, so that the surface of the workpiece can be simultaneously ground by the vibration of the solid and the liquid, and the grinding precision is improved. Alternatively, the polishing solution is 1% triethanolamine water and the abrasive is 500 mesh carborundum or B505 zirconia. When the swinging piece 72 swings in the polishing medium, the workpiece can be uniformly ground, the polishing medium can be stirred, the abrasive is prevented from being precipitated at the bottom of the processing pool 11, and the workpiece can be ground after the abrasive is uniformly distributed in the polishing solution.

In one embodiment, the ultrasonic generator 30 includes a transducer and a horn coupled between the transducer and the working head 50. The horn is an important component of an ultrasonic vibration system, and has a main function in the vibration system to amplify the particle displacement or velocity of mechanical vibration and concentrate ultrasonic energy on a smaller area, i.e. energy concentration, so that the horn is also called an ultrasonic shift lever or an ultrasonic energy concentrator. The amplitude transformer mainly has the functions of changing the amplitude (generally increasing) of the transducer, improving the vibration velocity ratio and efficiency, improving the mechanical quality factor, enhancing the heat resistance, expanding the adaptive temperature range and prolonging the service life of the transducer.

In one embodiment, the driving member 74 for driving the oscillating member 72 to oscillate is a servo motor, and the delay time and the rotation speed of the servo motor are set according to the polishing effect to be achieved. After the equipment is started, the servo motor rotates to drive the swinging piece 72 (a fixture for fixing the workpiece is arranged on the swinging piece 72, and the workpiece is fixed on the swinging piece 72), and simultaneously, the workpiece is driven to swing within the amplitude of 0.5 mm.

In one embodiment, the swinging member 72 includes a first swinging arm 721, a second swinging arm 723, a bearing portion 725 and a swinging shaft 727, the bearing portion 725 is disposed in the working tank 11 and connected between the first swinging arm 721 and the second swinging arm 723, one of the first swinging arm 721 and the second swinging arm 723 is in transmission connection with the driving member 74, and the other is connected with the working platform through the swinging shaft 727, so that the first swinging arm 721 or the second swinging arm 723 connected with the driving member 74 can swing around the swinging shaft 727 in a reciprocating manner in a plane perpendicular to the axis of the swinging shaft 727 under the driving of the driving member 74, so as to swing the bearing portion 725 and the workpiece disposed on the bearing portion 725. And the bearing 725 is allowed to protrude into the working tank 11 through the transition of the first swing arm 721 and the second swing arm 723 and then driven by the driving member 74 outside the working tank 11.

In one embodiment, the first swing arm 721 and the second swing arm 723 are L-shaped members, one end of each L-shaped member extends into the working pool 11 and is connected to the bearing portion 725, and the other end of each L-shaped member extends out of the working pool 11 and is connected to the corresponding driving member 74 or the working platform 10, so that the bearing portion 725 in the working pool 11 is driven to swing by the driving member 74 outside the working pool 11.

In one embodiment, the swing mechanism 70 further includes a first supporting table 76 and a second supporting table 78, the working table 10 is provided with a first side wall 12 and a second side wall 14, the first side wall 12 and the second side wall 14 are oppositely disposed around the working pool 11, the first supporting table 76 and the second supporting table 78 are respectively provided on the first side wall 12 and the second side wall 14, a first swing arm 721 and a second swing arm 723 are respectively supported on the first supporting table 76 and the second supporting table 78, the driving member 74 is provided on the first side wall 12, and an output end of the driving member 74 passes through the first supporting table 76 to be connected with the first swing arm 721, and the swing shaft 727 is provided on the second supporting table 78 and is rotatably connected with the second swing arm 723, so that the first swing arm 721 swings around the swing shaft 727 under the driving of the driving member 74.

Further, the first supporting platform 76 includes a mounting component 761 and a guide plate 763, the mounting component 761 is provided with a guide groove 762, the guide plate 763 is connected with the first swing arm 721 and movably accommodated in the guide groove 762, an output end of the driving component 74 passes through the mounting component 761 and is connected with the guide plate 763 to drive the guide plate to move in the guide groove 792, and simultaneously drives the first swing arm 721 to swing, and the first swing arm 721 is driven to swing relative to the mounting component 761 through the cooperation between the guide plate 763 and the guide groove 762, so as to swing the swing component 72.

Specifically, the guide groove 762 is defined by a bottom wall 7621 and a side portion 7623, the bottom wall 7621 is provided with a plurality of balls 765, and the guide plate 763 is provided on the plurality of balls 765 and has a predetermined gap with the side wall 7623. Thus, the guide plate 763 is in point contact with the plurality of balls 765, the contact area of the guide plate 763 is reduced, the flexibility of movement of the guide plate 763 is enhanced, and the first swing arm 721 is driven to swing by the driving member 74 through the guide plate 763. And, the opposite ends of the swinging shaft 727 are respectively connected with the second supporting platform 78 and the second swinging arm 723, and bearings are respectively arranged between one end of the swinging shaft 727 and the first supporting platform 76 and between the other end of the swinging shaft 727 and the second supporting platform 78, so as to allow the second swinging arm 723 to flexibly rotate relative to the second supporting platform 78.

In one embodiment, the polishing machine 100 further comprises a lifting mechanism 90, wherein the lifting mechanism 90 is disposed on the worktable 10 and connected to the ultrasonic generator 30 to drive the ultrasonic generator 30 and the working head 50 to lift and lower relative to the swinging member 72. When the ultrasonic generator 30 and the working head 50 ascend relative to the swinging piece 72, a workpiece to be machined is placed on the swinging piece 72 in the machining pool 11, and then the lifting mechanism 90 drives the ultrasonic generator 30 and the working head 50 to descend until the working head 50 extends into the machining pool 11 to abut against the workpiece, so that high-frequency vibration polishing can be carried out.

Further, the lifting mechanism 90 includes a guide rod 92, a movable plate 94 and a locking member 96, the guide rod 92 is disposed perpendicular to the worktable 10, the ultrasonic generator 30 is fixed on the movable plate 94, the movable plate 94 is sleeved outside the guide rod 92 and can be lifted along the guide rod 92, and the locking member 96 is used for fixing the movable plate 94 on the guide rod 92. The movable plate 94 movably disposed on the guide rod 92 drives the ultrasonic generator 30 and the working head 50 connected thereto to move up and down, and when the working head moves to a proper position, the movable plate 94 can be fixed by the locking member 96 to fix the position of the working head 50. It is understood that, in some other embodiments, the ultrasonic generator 30 may be driven to move up and down by other mechanisms, such as a screw rod, which is not limited herein.

Furthermore, the workbench 10 is further provided with a third sidewall 16 and a fourth sidewall 18, the third sidewall 16 and the fourth sidewall 18 are oppositely disposed around the working pool 11 and connected between the first sidewall 12 and the second sidewall 14, the third sidewall 16 and the fourth sidewall 18 are both provided with a guide rod 92, and the movable plate 94 extends along the direction from the third sidewall 16 to the fourth sidewall 18 and is movably disposed on the guide rod 92, so as to realize the lifting of the working head 50, avoid interference with the swing mechanism, and simplify the overall structure of the polishing machine 100.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A polishing machine is characterized by comprising a workbench, an ultrasonic generator, a working head and a swinging mechanism, wherein the workbench is provided with a working pool for containing a polishing medium, the swinging mechanism comprises a swinging piece and a driving piece, the swinging piece is partially arranged in the polishing medium and used for bearing a workpiece, the driving piece is positioned outside the working pool and connected with the swinging piece and drives the swinging piece to swing, the ultrasonic generator is arranged on the workbench and connected with the working head, and the working head can extend into the polishing medium to transmit high-frequency vibration to the workpiece;

the swinging piece comprises a first swinging arm, a second swinging arm and a bearing part, the bearing part is arranged in the working pool and is connected between the first swinging arm and the second swinging arm, one of the first swinging arm and the second swinging arm is connected with the driving piece, and the other one of the first swinging arm and the second swinging arm is connected with the working platform through the swinging shaft, so that the first swinging arm or the second swinging arm connected with the driving piece can swing around the swinging shaft in a reciprocating mode in a plane vertical to the axis of the swinging shaft under the driving of the driving piece;

the swing mechanism further comprises a first supporting table and a second supporting table, a first side wall and a second side wall are arranged on the working table, the first side wall and the second side wall are oppositely arranged around the working pool, the first supporting table and the second supporting table are respectively arranged on the first side wall and the second side wall, the first swing arm and the second swing arm are respectively supported on the first supporting table and the second supporting table, the driving piece is arranged on the first side wall, an output shaft of the driving piece penetrates through the first supporting table and is connected with the first swing arm, the swing shaft is arranged on the second supporting table and is rotatably connected with the second swing arm, and therefore the first swing arm can swing around the swing shaft under the driving of the driving piece;

the first supporting table comprises a mounting piece and a guide plate, a guide groove is formed in the mounting piece, the guide plate is connected with the first swing arm and movably accommodated in the guide groove, and the output end of the driving piece penetrates through the mounting piece to be connected with the guide plate so as to drive the guide plate to move in the guide groove and drive the first swing arm to swing;

the guide way is enclosed to close by diapire and lateral wall and forms, be provided with a plurality of balls on the diapire, the deflector locate a plurality of on the ball and with reserve between the lateral wall has the clearance.

2. The polishing machine according to claim 1, wherein the first and second swing arms are each L-shaped pieces, one end of each L-shaped piece extends into the working pool and is connected with the bearing part, and the other end of each L-shaped piece extends out of the working pool and is connected with the corresponding driving piece or the corresponding swing shaft.

3. A polishing machine as recited in claim 1 wherein the polishing medium is formed from a polishing solution and an abrasive material mixed together.

4. The polishing machine according to claim 1, further comprising a lifting mechanism, wherein the lifting mechanism is arranged on the worktable and connected with the ultrasonic generator so as to drive the ultrasonic generator and the working head to lift relative to the swinging member.

5. The polishing machine according to claim 4, wherein the lifting mechanism comprises a guide rod, a movable plate and a locking member, the guide rod is arranged perpendicular to the worktable, the ultrasonic generator is fixed on the movable plate, the movable plate is sleeved outside the guide rod and can be lifted along the guide rod, and the locking member is used for fixing the movable plate on the guide rod.

6. A polishing machine as set forth in claim 1 wherein the ultrasonic generator includes a transducer and a horn connected between the transducer and the working head.