CN219131698U

CN219131698U - Powder metallurgy part magnetic abrasive particle cluster polishing equipment

Info

Publication number: CN219131698U
Application number: CN202320019609.8U
Authority: CN
Inventors: 张振宇; 王泽云; 李玉彪; 朱嘉旭; 吴耀文; 董立光
Original assignee: Foshan Tanzhituo High End Intelligent Equipment Co ltd
Current assignee: Foshan Tanzhituo High End Intelligent Equipment Co ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-06-06
Anticipated expiration: 2033-01-05

Abstract

The utility model discloses powder metallurgy part magnetic abrasive particle cluster polishing equipment which comprises a structural support device, a part batch clamping device, a polishing groove and a permanent magnet rotating device, wherein the part batch clamping device is fixed at the top of the structural support device; one end of a clamp connecting rod of the part batch clamping device is connected with the clamp disc, the other end of the clamp connecting rod is connected with an adjustable clamp, and the adjustable clamp is used for clamping the powder metallurgy part and extends into the polishing groove; two pairs of permanent magnets are arranged on the rotating disc, and a driving motor is connected with a worm gear through a coupler to drive the rotating disc and the permanent magnets to horizontally rotate; and the magnetic abrasive particles in the polishing groove are clustered under the action of a magnetic field to finally form an abrasive brush, and the abrasive brush rotates to impact the powder metallurgy part to polish and remove burrs. The device has strong operability, good stability and high working efficiency.

Description

Powder metallurgy part magnetic abrasive particle cluster polishing equipment

Technical field:

the utility model belongs to the technical field of powder metallurgy part polishing, and particularly relates to powder metallurgy part magnetic abrasive particle cluster polishing equipment.

The background technology is as follows:

the powder metallurgy material part is widely applied to the fields of automobiles, electronics, aerospace and the like due to the characteristics of low cost, high precision, excellent structural characteristics and the like. Powder metallurgy is a technique for manufacturing metal materials, composite materials, and various products by molding and sintering from metal powder or a mixture of metal powder and non-metal powder as a raw material. The powder metallurgy technology has a series of advantages of energy conservation, material conservation, excellent performance, high precision, good stability and the like, and is suitable for batch production. In addition, some materials which cannot be prepared by the traditional casting method and processing method and parts which are difficult to process can also be prepared by the powder metallurgy technology, and the powder metallurgy is widely applied to various fields at present, wherein the iron-based powder metallurgy is most widely applied.

In the powder metallurgy part forming process, when metal powder or finishing sintering blank is pressed in a die to form, flow or plastic deformation can be generated, a fit clearance is necessarily formed by the relative sliding between a female die of the die and a die punch, and the relative sliding between the die punch and a core rod, and the filling effect generated at the fit clearance of the die by a formed part is the root cause of burrs. Along with the improvement of industrialization and automation level, the requirements on the manufacturing precision of the powder metallurgy parts are higher and higher, the requirements on the use conditions are more and more severe, burrs are gradually paid high importance to, and the deburring becomes a key process in the part machining process. At present, the manual operation mode is mostly adopted for removing burrs, but the quality of the manual deburring is difficult to control, the production efficiency is low, only 1 product can be processed at a time, the labor intensity is high, the production cost is high, and the large-scale production is difficult to realize. Powder metallurgy is a novel material which is difficult to process, heat generated in the cutting process is high, gaps formed in the material after compression molding still exist after sintering, and the gaps are poor conductors for heat transfer, so that the surface of a workpiece is easy to oxidize by cutting fluid, and abrasion of the workpiece is accelerated. Therefore, it is difficult to polish powder metallurgy parts by a polishing method having an oxidizing and corrosive effect such as a chemical polishing liquid.

At present, no proper method and equipment are available for carrying out high-efficiency batch polishing on powder metallurgy parts, so that the high-efficiency polishing equipment for the powder metallurgy parts is provided, and has important significance for reducing the processing cost of the parts and promoting the benign development of the powder metallurgy industry.

The utility model comprises the following steps:

the utility model aims to overcome the defects of the prior art and provide the powder metallurgy part magnetic abrasive particle cluster polishing equipment aiming at the problems of difficult burr removal, poor surface quality and the like of the powder metallurgy part. The utility model mainly utilizes a rotating device to assist a magnetic field polishing method, magnetic abrasive particles are controlled to gather by a magnetic field and change a motion track, the polishing of the inner and outer surfaces of a powder metallurgy part and the removal of burrs on the inner side of a part hole are efficiently completed, and the batch polishing processing of the part is realized through equipment. The part batch clamping device is fixedly connected with the structural support device through bolts and nuts, and the part batch clamping device is fixed in position and good in stability; part of the part clamping device stretches into the polishing groove, the permanent magnets are regularly distributed on the inner side and the outer side of the polishing groove, and a stable strong magnetic field is formed inside the polishing groove; magnetic abrasive particles are placed in the polishing groove and controlled by a strong magnetic field; the permanent magnet rotating device drives the permanent magnet to do regular rotation motion under the drive of the motor, so that the magnetic abrasive particles move in the polishing groove and polish and burr remove the powder metallurgy part. The area of one side of the clamp supporting shaft is larger and is connected with the structural supporting device, the device is fixed through six bolts and nuts, the stability of the device is good, and the other side of the clamp supporting shaft is connected with the clamp disc in an embedded manner; the clamp disc is fixedly connected with the four polishing clamps, four large-scale powder metallurgy parts can be polished simultaneously, the number of the clamps can be increased according to actual conditions, and the aim of batch polishing is achieved. Two permanent magnets are placed in the middle of the polishing groove, two permanent magnets are placed at corresponding positions on the outer side of the polishing groove, two permanent magnets are opposite to each other to form a strong magnetic field in the polishing groove, a large number of magnetic abrasive particles are contained in the polishing groove, the magnetic abrasive particles are clustered under the action of the magnetic field, and a large number of abrasive particles are gathered to form a magnetic abrasive particle brush. The power source of the permanent magnet rotating device is a driving motor, the driving motor drives the worm and gear to move so as to drive the permanent magnet to move, the abrasive particle cluster phenomenon continuously exists in the permanent magnet moving process, the abrasive particle brush formed by the abrasive particle cluster moves along with the permanent magnet, the surface of the powder metallurgy part can be polished and burrs are removed in the abrasive particle brush moving process, and after the part is treated by the abrasive particle brush for a plurality of times, the surface of the part is bright, and the burr removing effect is obvious.

Further, two pairs of magnetic poles are mounted on the rotary disc, a polishing groove is arranged on the disc, the polishing groove covers the inner side magnet, an annular cavity in the polishing groove is arranged between the two pairs of magnetic poles, and a batch of powder metallurgy parts are suspended in the annular cavity.

Further, under the action of a magnetic field, the magnetic abrasive particles in the cavity have a cluster effect, a large number of abrasive particles are gathered around the magnetic field to form a magnetic brush, the magnetic brush has certain stability under the action of magnetic field force, and the shape of the magnetic brush is approximate to a rectangle.

Further, the two formed magnetic brushes move along with the magnetic poles under the action of the driving motor, the magnetic brushes rotate and impact the workpiece, a large number of magnetic abrasive particles in the magnetic brushes are in contact with the surface of the part, and burrs on the surface of the part are removed in a stress mode.

Further, the magnetic brush is initially intact, the magnetic brush gap begins to appear after contacting the part, then the part is completely wrapped by the magnetic brush, and thereafter the magnetic brush is gradually moved away from the part. The contact time of the magnetic brush and the parts can be controlled by adjusting the driving motor, the optimal contact time of different parts is different, and the effective polishing of different parts is realized by adjusting the rotating speed of the motor.

Further, the clamping range of the clamping device can be adjusted through the clamping nut, meanwhile, the clamping nut also plays a role in fixing parts, and clamping of different parts can be achieved through adjusting the position of the clamping nut, so that the device can achieve machining of various parts.

Further, for the processing of small-size parts, the clamping device is added by changing different clamp discs, so that the polishing quantity of single parts is increased, and the batch processing of the small-size powder metallurgy parts is realized.

Further, the magnetic abrasive particle brush can strike the part for many times in a short time in high-speed rotation, the material removal efficiency of the part is good, meanwhile, the single removal amount of the magnetic abrasive particle brush to the surface material of the part is small, good surface quality can be obtained through many times of striking, and good polishing efficiency and polishing precision can be achieved.

Compared with the prior art, the utility model has the beneficial effects that:

compared with the traditional manual polishing method and chemical corrosion polishing method, the method has the advantages of higher polishing efficiency, good polishing precision, no corrosion damage to the surface of the powder metallurgy part, and effective realization of high-efficiency non-damage polishing of the part. Compared with the traditional file tool polishing, the device can realize batch efficient polishing of powder metallurgy parts and batch polishing of parts with different sizes. The method and the equipment provided by the utility model have the advantages of wide applicable surface shape, simple structure, good stability and strong operability.

Description of the drawings:

FIG. 1 is a schematic view of a three-dimensional assembly structure of an apparatus according to an embodiment of the present utility model

FIG. 2 is a schematic view of a three-dimensional partial structure of an apparatus according to an embodiment of the present utility model

FIG. 3 is a schematic view of a batch part holding apparatus of the present utility model

FIG. 4 is a schematic view of a permanent magnet rotating device of the apparatus according to the present utility model

FIG. 5 is a schematic view showing the structure of a polishing tank of the apparatus of the present utility model

In fig. 1: 1. a structural support device; 2. a part batch clamping device; 3. a polishing groove; 4. permanent magnet rotating device

In fig. 3: 2-1, a clamp supporting shaft; 2-2, clamping the disc; 2-3, a clamp connecting rod; 2-4, an adjustable clamp; 2-5, clamping nut

In fig. 4: 4-1, driving a motor; 4-2, a coupler; 4-3, worm and gear; 4-4, supporting the shaft by the rotating device; 4-5, rotating the disc; 4-6, permanent magnet.

The specific embodiment is as follows:

it should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other, and the present utility model will be described in detail below with reference to the drawings and the embodiments.

As shown in fig. 1, the embodiment of the utility model discloses powder metallurgy part magnetic abrasive particle cluster polishing equipment, which comprises a structural support device 1, a part batch clamping device 2, a polishing groove 3 and a permanent magnet rotating device 4, wherein the equipment is of a vertical structure, and can realize efficient polishing and burr removal of the inner surface of a powder metallurgy part.

Specifically, the structure supporting device 1 is of a nearly C-shaped semi-surrounding structure, the top of the structure supporting device is fixedly connected with the part batch clamping device 2 through bolts and nuts, the bottom of the structure supporting device plays a role in fixedly supporting the permanent magnet rotating device 4, and the overall stability of the device is improved by the framework supporting device; the part batch clamping device 2 is used for clamping powder metallurgy parts, the double clamping nuts can effectively fix the positions of the parts, the double clamping nuts can simultaneously clamp a plurality of parts, and the clamp support shafts of the double clamping nuts penetrate into the annular cavity of the polishing groove; a large number of magnetic abrasive particles are placed in the annular cavity of the polishing groove 3, the clamp and the parts are contained in the annular cavity, and a magnetic field mainly acts on the magnetic abrasive particles in the polishing groove; the permanent magnet rotating device 4 is characterized in that a motor is used as a rotating power source, a worm gear device is used as a power transmission device, so that a rotating disc is driven to rotate, a permanent magnet is driven to rotate, abrasive particles are clustered under the action of the magnet inside and outside a polishing groove, a large number of magnetic abrasive particles are gathered near the magnet to form an abrasive particle brush, the whole stability of the device is good, the device is good in operation, and polishing and burr removing work on the inner surface and the outer surface of a powder metallurgy part under the action of the magnetic abrasive particle cluster rotation can be realized.

Specifically, the part batch clamping device 2 comprises a clamp supporting shaft 2-1, a clamp disc 2-2, a clamp connecting rod 2-3, an adjustable clamp 2-4 and a clamping nut 2-5. One end of the clamp supporting shaft is fixedly connected with the structural supporting device through bolts and nuts, the whole device has good stability with the supporting device, and the other end of the clamp supporting shaft is fixedly connected with the clamp disc; the clamp disc is fixedly connected with the plurality of clamp connecting rods through bolts and nuts, the number of the clamp connecting rods on the clamp disc can be increased or reduced according to the size of the part, and the clamp connecting rods have a certain length and can enter the polishing groove annular cavity; the adjustable clamp has a part clamping function, the shape of the adjustable clamp is a rectangular surrounding structure, the part can be fixed through the clamping nut, and the double clamping nuts can be adjusted to adapt to different part structures.

Specifically, the permanent magnet rotating device 4 comprises a driving motor 4-1, a coupler 4-2, a worm gear 4-3, a rotating device supporting shaft 4-4, a rotating disc 4-5 and a permanent magnet 4-6. The driving motor is used as a power source of the device and is fixedly connected with the worm and gear structure through the coupler, and the worm and gear is fixedly connected with the supporting shaft of the rotating device to drive the supporting shaft of the rotating device to rotate; two pairs of permanent magnets are placed on the rotary disc, the magnet structure is long rectangle, a strong magnetic field is generated between the magnets, the polishing groove annular cavity is arranged in the magnetic field, and abrasive particles near the polishing groove magnets have a cluster effect under the action of the strong magnetic field to form the abrasive particle brush.

The abrasive particles used in the examples were cylindrical magnetic abrasive particles having a height of 2mm and a bottom radius of 0.1mm, and the motor speed during polishing was not less than 150rad/min.

Furthermore, in the polishing process, the magnetic abrasive particles with different particle sizes and different shapes can be replaced according to the actual part processing requirements so as to achieve the optimal polishing effect.

Further, a strong magnetic field is generated between the permanent magnets, the magnetic abrasive particles are adsorbed by the magnetic field, and a large number of abrasive particles are clustered to form the abrasive particle brush. The abrasive particle brush continuously collides with the part so as to remove the material, the number of times of collision between the part and the abrasive particle brush influences the removal rate, and the material removal rate can be adjusted by adjusting the rotation speed of the motor, so that the expected target is better realized.

Further, the abrasive particle brush can not be damaged greatly in the working process, can work continuously under the condition that abrasive particles are not replaced for a long time, and reduces the time cost of replacing materials, so that the equipment is strong in continuous working performance, does not generate any harmful substances in the working process, and is outstanding in economical efficiency and environmental protection.

Furthermore, the equipment can realize small-batch polishing treatment of powder metallurgy parts, has the working efficiency far higher than that of manual polishing, and has important significance for reducing the production cost of the powder metallurgy parts and promoting the sustainable development of the industry.

Further, the part clamping device can adapt to and effectively clamp powder metallurgy parts with different sizes, and the device is high in universality due to the fact that the powder metallurgy parts are large in size and various in variety, can meet the polishing requirements of the parts with different sizes, and greatly improves working efficiency.

Furthermore, the abrasive particle brush formed by the magnetic field has small damage to the surface of the part, obvious burr removal and obvious polishing effect. The magnetic field can serve as the development direction of the current hot spot, and can better serve the grinding and polishing direction of the powder metallurgy parts and the production and life.

Claims

1. A powder metallurgy part magnetic abrasive particle cluster polishing apparatus, comprising: the polishing device comprises a structural support device (1), a part batch clamping device (2), a polishing groove (3) and a permanent magnet rotating device (4), wherein the part batch clamping device (2) is fixed at the top of the structural support device (1), the permanent magnet rotating device (4) is placed at the bottom of the structural support device (1), and the polishing groove (3) is placed on the permanent magnet rotating device (4).

2. The powder metallurgy part magnetic abrasive particle cluster polishing device according to claim 1, wherein: the part batch clamping device (2) comprises a clamp supporting shaft (2-1), a clamp disc (2-2), clamp connecting rods (2-3), an adjustable clamp (2-4) and a clamping nut (2-5), one end of the clamp supporting shaft (2-1) is fixedly connected with the structure supporting device (1) through a bolt and a nut, the whole device is good in stability, the other end of the clamp supporting shaft (2-1) is fixedly connected with the clamp disc (2-2), the clamp disc (2-2) is fixedly connected with the clamp connecting rods (2-3) through the bolt and the nut, the number of the clamp connecting rods (2-3) on the clamp disc (2-2) can be increased or reduced according to the size of a part, the clamp connecting rods (2-3) have a certain length, can extend into an annular cavity of the polishing groove (3), the adjustable clamp (2-4) has a part clamping function, and is of a rectangular surrounding structure, and a part can be fixed through the clamping nut (2-5).

3. The powder metallurgy part magnetic abrasive particle cluster polishing device according to claim 1, wherein: the permanent magnet rotating device (4) comprises a driving motor (4-1), a coupler (4-2), a worm gear (4-3), a rotating device supporting shaft (4-4), a rotating disc (4-5) and a permanent magnet (4-6), wherein the driving motor (4-1) is used as a power source of the device, is fixedly connected with the worm gear (4-3) through the coupler (4-2) and is fixedly connected with the rotating device supporting shaft (4-4), and drives the rotating disc (4-5) fixedly connected with the rotating device supporting shaft (4-4) to rotate, and two pairs of permanent magnets (4-6) are placed on the rotating disc (4-5).

4. The powder metallurgy part magnetic abrasive particle cluster polishing device according to claim 1, wherein: the permanent magnet rotating device is driven by a motor, and torque is transmitted through the worm and gear structure, the rotating device supporting shaft and the rotating disc.

5. The powder metallurgy part magnetic abrasive particle cluster polishing device according to claim 1, wherein: the polishing groove is placed on the rotary disc, the annular cavity of the polishing groove is arranged between the two pairs of long rectangular magnets, and under the action of a strong magnetic field, the abrasive brushes are formed in the annular cavity of the polishing groove.