CN113001390B

CN113001390B - Magnetic polishing machine for grinding precision workpiece

Info

Publication number: CN113001390B
Application number: CN202110207512.5A
Authority: CN
Inventors: 刘晓强
Original assignee: Dongying Fu Hao Casting Branch Technology Co ltd
Current assignee: Dongying Fu Hao Casting Branch Technology Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2022-05-17
Anticipated expiration: 2041-02-25
Also published as: CN113001390A

Abstract

The invention relates to the technical field of polishing, and discloses a magnetic polishing machine for grinding a precision workpiece, which comprises a machine base and a controller, wherein a polishing barrel is arranged above the machine base, a rotating disc is rotatably connected in an inner cavity of the machine base, a magnetic pole is fixed on the rotating disc, the center of the rotating disc is rotatably connected with a motor, guide grooves are formed in the bottoms of the polishing barrel and the rotating disc, a support rod is movably sleeved in the middle of each guide groove, the top end of each support rod is fixedly connected with a chassis, and a permanent magnet is arranged inside the chassis. According to the invention, through the action of magnetic force between the magnetic poles and the permanent magnets, the permanent magnets rotate in the rotation process of the magnetic poles, so that the chassis and the parts on the chassis are driven to rotate, the side faces of the parts can be opposite to the front face of the impact direction of the steel needle, and the polishing uniformity of the steel needle on the side faces of the parts is effectively improved.

Description

Magnetic polishing machine for grinding precision workpiece

Technical Field

The invention relates to the technical field of polishing, in particular to a magnetic polishing machine for grinding a precision workpiece.

Background

With the rapid development of the manufacturing industry in China, the demand of industrial production on precise and tiny parts is increasing day by day, but in the processing process of the parts, various different burrs are inevitably generated on the surfaces, through holes, edges and other positions of the parts, so that the surface quality of the parts is reduced, the surface defects are increased, and aiming at the defects of the existing processing methods such as surface finishing and deburring, the development of a new processing technology for removing the burrs of the tiny parts, which has the advantages of high deburring efficiency, good processing quality, easy operation, low cost and wide application range, is necessary. Therefore, the magnetic polisher takes place at the right moment.

The magnetic polishing machine utilizes attraction force generated by a rotating magnetic field to drive a magnetic grinding medium (magnetic abrasive particles, steel balls or magnetic needles) to rotate in a polishing barrel, and the magnetic grinding medium continuously scratches, collides and extrudes the surface of a workpiece to perform various irregular relative motions, so that the surface finish of the workpiece is improved, the service life is prolonged, and the requirement of industrial production is met.

Through the motion of the magnetic needle in the magnetic field, three processing functions exist in the process of polishing the workpiece by the magnetic needle: the magnetic polishing machine has the advantages that the magnetic polishing machine has the effects of impact, scratching and rolling, wherein the impact is the main processing effect of magnetic polishing, the scratching is caused by the irregular sliding between the magnetic needle and the surface of a workpiece after the magnetic needle impacts the workpiece, and the scratching effect is weaker than that of the impact generated by the collision of the end face of the magnetic needle; the rolling is that the magnetic needle enters the burr under the impact or scratching action and is removed under the impact and scratching action of other magnetic needles, so the processing effect of the rolling action is small compared with the impact and scratching action.

Generally, during polishing, a plurality of parts are stacked in a polishing barrel and reach a certain height, most steel needles are gathered at the bottom of the polishing barrel, and for the parts with the certain height and a plurality of parts stacked to reach the certain height, the contact amount with the magnetic needles is increased from top to bottom, so that the polishing effect of the parts above is poorer than that of the parts below, and the polishing effect is uneven for the same part; for parts with the same height, the fixed parts cause the area opposite to the direction of the impact of the steel needle to be fixed, so that the polishing of the parts with the same height and different positions is not uniform.

Disclosure of Invention

Aiming at the defects of the existing magnetic polishing machine in the background technology in the using process, the invention provides the magnetic polishing machine for grinding the precise workpiece, which has the advantage of uniform polishing and solves the problem of non-uniform polishing in the background technology.

The invention provides the following technical scheme: the utility model provides a precision work piece grinds and uses magnetic force burnishing machine, includes frame and controller, the top of frame is equipped with the polishing barrel, swivelling joint has the rotating circular disc in the inner chamber of frame, be fixed with the magnetic pole on the rotating circular disc, the center of rotating circular disc is rotated and is connected with the motor, all seted up the guide slot with the bottom of polishing barrel, the bracing piece has been cup jointed in the middle part activity of guide slot, the top fixedly connected with chassis of bracing piece, the inside on chassis is equipped with the permanent magnet.

Preferably, the number of the base plates is multiple and is uniformly distributed in the polishing barrel, and the base plates are detachably connected with the supporting rods.

Preferably, the chassis comprises a magnetic shielding surface and a magnetic conduction surface, the magnetic conduction surface is a bottom surface of the chassis connected with the supporting rod, and the magnetic shielding surface is a top surface and a side surface of the chassis.

Preferably, the bottom surface of the polishing barrel is provided with a seat groove, the height of the seat groove is the same as that of the chassis, and the bottom of the seat groove is communicated with the guide groove.

Preferably, the inner wall of the seat groove is provided with a sliding seat, the top of the sliding seat is connected with a telescopic protective sleeve, and one end, far away from the sliding seat, of the telescopic protective sleeve is fixedly connected to the bottom surface of the chassis.

Preferably, a plurality of coils are wound on the outer wall of the supporting rod and are connected in parallel and electrically connected with the controller.

The invention has the following beneficial effects:

1. according to the invention, under the action of magnetic force between the magnetic poles and the permanent magnets, the permanent magnets also rotate in the rotation process of the magnetic poles, so that the chassis and the parts on the chassis are driven to rotate, the side faces of the parts can be opposite to the front face of the direction impacted by the steel needle, and the polishing uniformity of the steel needle on the side faces of the parts is effectively improved.

2. According to the invention, the chassis can move up and down in the process of changing the repulsive force under the action of the change of the repulsive force between the magnetic pole and the coil, so that the aim of driving the parts on the chassis to move up and down is fulfilled, the parts above the chassis can pass through the region with dense steel needles, and the polishing uniformity of the parts is further improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the polishing barrel of the present invention;

FIG. 3 is a partial schematic view of the base plate of the present invention;

FIG. 4 is a partial top view of the chassis of the present invention;

fig. 5 is a top view of a rotating disk of the present invention.

In the figure: 1. a machine base; 2. a polishing barrel; seat slots 201, seat slots; 3. rotating the disc; 4. a magnetic pole; 5. an electric motor; 6. a chassis; 601. a magnetic shield surface; 602. a magnetic conductive surface; 7. a permanent magnet; 8. a support bar; 9. a coil; 10. a controller; 11. a guide groove; 12. a sliding seat; 13. a telescopic protective sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-5, a magnetic polishing machine for grinding precision workpieces comprises a machine base 1 and a controller 10, a polishing barrel 2 is arranged above the machine base 1, a rotating disc 3 is rotatably connected in an inner cavity of the machine base 1, a magnetic pole 4 is fixed on the rotating disc 3, a motor 5 is rotatably connected in the center of the rotating disc 3, guide grooves 11 are respectively arranged at the bottoms of the polishing barrel 2 and a support rod 8 is movably sleeved at the middle of each guide groove 11, a base plate 6 is fixedly connected at the top end of each support rod 8, a plurality of base plates 6 are arranged, specifically, according to the bottom surface area regulation of the polishing barrel 2, the polishing barrel 2 uniformly covers the bottom surface of the base plate 6, a larger gap is not arranged between every two adjacent polishing barrels 2, so that smaller parts are prevented from falling from the gap, a permanent magnet 7 is arranged in the base plate 6, the permanent magnet 7 is influenced by a magnetic field on the magnetic pole 4, and the permanent magnet 7 is enabled to rotate in the rotating disc 3, the rotation takes place because of the effect of magnetic field power to drive the part on the chassis 6 and rotate, make every face homoenergetic of part on the chassis 6 openly towards the impact direction of steel needle, thereby make the surface of part evenly receive the impact, impel the part surface polishing even.

The quantity of chassis 6 is a plurality of and evenly distributed in the inside of burnishing barrel 2, and chassis 6 and bracing piece 8 can dismantle the connection, and when treating the great time of the part of polishing, can change great chassis 6, prevent that a part can't be accepted completely in little chassis 6 and lead to dropping from chassis 6 at chassis 6 removal in-process part.

Seat groove 201 has been seted up to polishing barrel 2's bottom surface, and the height of seat groove 201 is the same with chassis 6's height, can joint completely in seat groove 201 after chassis 6 descends promptly, guarantees that the top surface of chassis 6 flushes with polishing barrel 2's bottom surface mutually, and when changing different chassis 6, the thickness homogeneous phase on chassis 6 is the same, and the bottom of seat groove 201 is linked together with guide slot 11

The inner wall of seat groove 201 is equipped with sliding seat 12, and the top of sliding seat 12 is connected with flexible lag 13, and the one end fixed connection that slide seat 12 was kept away from to flexible lag 13 is on the bottom surface of chassis 6, and flexible lag 13 is used for sealing the position of chassis 6 below and polishing barrel 2 bottom surfaces, prevents that the steel needle from getting into the inside of seat groove 201, guarantees not receive the hindrance of steel needle at the removal in-process on chassis 6.

The chassis 6 comprises a magnetic shielding surface 601 and a magnetic conductive surface 602, the magnetic conductive surface 602 is the bottom surface of the chassis 6 connected with the support rods 8, the magnetic shielding surface 601 is the top surface and the side surface of the chassis 6, the coils 9 are wound on the outer walls of the support rods 8, the coils 9 are connected in parallel and electrically connected with the controller 10, the coils 9 are wound on the support rods 8, when current is supplied to the coils 9 and the magnetic field generated by the coils 9 is the same as the magnetic poles of the magnetic poles 4, the support rods 8, the coils 9 and the chassis 6 are subjected to upward repulsive force, so that parts on the chassis 6 move upward, and when the current in the coils 9 is gradually reduced, the chassis 6 gradually moves downward, because steel needles are generally gathered at a position close to the bottom of the polishing barrel 2 and often have a plurality of parts during polishing, the parts are piled up together to have a certain height, the contact probability between the parts with different heights and the steel needles is different, the effect that leads to the polishing is also different, consequently drives the part of its top through chassis 6 and reciprocates for position or top about the part and the part homoenergetic of below all can contact with the intensive region of steel needle, thereby improve the degree of consistency of top and bottom part polishing, at the in-process that the part reciprocated, it will be slow to remove, reduce rivers to the influence of steel needle, because the steel needle receives the effect of water buoyancy, at the in-process that the part reciprocated, most steel needles are in stable height all the time.

The using method of the invention is as follows:

firstly, current is introduced into a coil 9, so that the coil 9 and a magnetic pole 4 repel each other, a base plate 6 is in a raised state, a steel needle is placed into a polishing barrel 2 by taking the top surface of the base plate 6 as the bottom surface, the steel needle is positioned on the top surface of the base plate 6, meanwhile, parts are placed above the base plate 6, and a motor 5 is started to drive a rotating disc 3 and the magnetic pole 4 to rotate;

secondly, when the magnetic pole 4 rotates, the permanent magnet 7 rotates under the action of the magnetic field force of the magnetic pole 4, so that the side surfaces of the parts can be opposite to the impact direction of the steel needle;

finally, the current in the coil 9 is gradually reduced through the controller 10, the repulsive force between the support rod 8 and the magnetic pole 4 is reduced, the chassis 6 and the parts on the chassis 6 gradually move downwards, the steel needles are at the height of the initial state of the chassis 6, and when the chassis 6 descends, the parts above the chassis 6 gradually move downwards to pass through the dense areas of the steel needles, so that the polishing uniformity of the parts with different heights is improved.

It is noted that, herein, relational terms such as first and second, and the like may be 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a precision work piece grinds uses magnetic force burnishing machine, includes frame (1) and controller (10), the top of frame (1) is equipped with polishing barrel (2), swivelling joint has rotating disc (3) in the inner chamber of frame (1), be fixed with magnetic pole (4) on rotating disc (3), the center of rotating disc (3) is rotated and is connected with motor (5), its characterized in that: guide grooves (11) are formed in the bottoms of the machine base (1) and the polishing barrel (2), a support rod (8) is movably sleeved in the middle of each guide groove (11), the top end of each support rod (8) is fixedly connected with a chassis (6), and a permanent magnet (7) is arranged inside each chassis (6);

the number of the base plates (6) is multiple, the base plates are uniformly distributed in the polishing barrel (2), and the base plates (6) are detachably connected with the supporting rods (8);

the chassis (6) comprises a magnetic shielding surface (601) and a magnetic conduction surface (602), the magnetic conduction surface (602) is the bottom surface of the chassis (6) connected with the supporting rod (8), and the magnetic shielding surface (601) is the top surface and the side surface of the chassis (6);

a seat groove (201) is formed in the bottom surface of the polishing barrel (2), the height of the seat groove (201) is the same as that of the chassis (6), and the bottom of the seat groove (201) is communicated with the guide groove (11);

a sliding seat (12) is arranged on the inner wall of the seat groove (201), a telescopic protective sleeve (13) is connected to the top of the sliding seat (12), and one end, far away from the sliding seat (12), of the telescopic protective sleeve (13) is fixedly connected to the bottom surface of the chassis (6);

a plurality of coils (9) are wound on the outer wall of the supporting rod (8), and the coils (9) are connected in parallel and are electrically connected with the controller (10).