A finishing method and device based on extrusion rolling

Abstract

The present invention discloses a finishing processing method and processing device based on extrusion rolling grinding, comprising a frame, a material bin, a turntable mechanism, and a pressure mechanism. The turntable mechanism comprises a turntable and a turntable driving mechanism for driving the turntable to rotate. The pressure mechanism comprises a pressure plate and a pressure plate driving mechanism for driving the pressure plate to move. The turntable and the pressure plate are both installed in the material bin and the workpiece and the grinding part are located between the turntable and the pressure plate. The pressure plate is pressed down by driving the pressure plate driving mechanism, and the pressure plate presses the workpiece and the grinding part to form a certain pressure on the workpiece and the grinding part as a whole. When working, the turntable driving mechanism is started to make the turntable rotate, thereby driving the workpiece and the grinding part to make a circular motion in the material bin and grind each other, thereby improving the polishing quality and processing efficiency of the workpiece, and can realize low-cost, high-efficiency, and large-scale finishing processing of the workpiece, which is beneficial to the application and promotion of the workpiece processing device and method in the field of precision and ultra-precision processing technology.

Description

Technical Field

[0001] The invention relates to the technical field of precision and ultra-precision machining, and is a finishing method and a machining device based on extrusion rolling. Background Art

[0002] Polishing refers to a processing method that uses mechanical, chemical or electrochemical effects to reduce the surface roughness of a workpiece to obtain a bright and flat surface. It is a modification process of the workpiece surface using polishing tools and abrasive particles or other polishing media. Polishing has always been an important technical means in the field of ultra-precision machining to achieve a smooth workpiece surface with good integrity or even no damage.

[0003] Finishing refers to a processing method that does not remove or removes a very thin layer of material from the workpiece, in order to reduce the surface roughness of the workpiece and improve the surface quality of the part. With the development of modern science and technology, a large number of finishing methods have emerged, among which the soft-viscous abrasive flow finishing method and eddy current roller finishing have outstanding advantages and have been widely used in the modern finishing industry. The eddy current roller mill is also called a rotating disc processing machine. The main components are a chassis rotating at a constant speed and a stationary cylinder. During the processing, the workpiece and the processing medium in the rotating cylinder rotate along the fixed cylinder wall under the centrifugal force generated by the rotation of the chassis, and rise along its inner wall, and fall after reaching a certain height. During the continuous rotation process, the above process is repeated, so that the mixture of the workpiece and the processing medium produces a spiral eddy current motion, and the workpiece and the abrasive interact with each other, so as to achieve the purpose of uniformly removing burrs, chamfering or polishing the workpiece. The original size and shape will not be destroyed during the processing, the operation is convenient, the production efficiency is high, which is 5 to 10 times that of the vibration finishing machine, and the noise is low, which can reduce the surface roughness of the workpiece by 1 to 2 levels. However, its rotation speed is relatively high and is not suitable for rough grinding of large workpieces with large cutting volumes and lower requirements.

[0004] Abrasive flow finishing is a process where high-pressure soft viscous abrasives quickly pass through the processing surface, causing the abrasives to rub against the processing surface to achieve the effect of material removal. Abrasive flow processing technology can not only grind and polish holes and cavities in hidden parts of parts, and round corners, but also grind and polish various complex surfaces on the outer surface. However, it requires specially formulated soft viscous abrasives, which are expensive, and due to the high processing pressure, it is easy to over-polish and produce scrap.

[0005] The eddy current tumbling finishing method has low cost and good processing effect, but low processing efficiency; the abrasive flow finishing method has extremely high processing efficiency, but the cost of specially formulated soft and sticky abrasives is high and the processing effect is poor. Therefore, the finishing methods in the prior art cannot achieve ideal results for polishing objects. Summary of the invention

[0006] In order to overcome the defects in the above-mentioned prior art, the first invention purpose of the present invention is to provide a finishing processing device based on extrusion rolling. The processing device has a simple and ingenious structure and can achieve low-cost, high-efficiency, and large-scale finishing processing of workpieces through the method of extrusion rolling, which is conducive to the application and promotion of the processing device in the field of precision and ultra-precision processing equipment technology. The second invention purpose of the present invention is to provide a finishing processing method based on extrusion rolling. Based on the above-mentioned finishing processing device based on extrusion rolling, this method can ensure the quality of the surface polishing of the workpiece and improve the processing efficiency of the device. Compared with the prior art, it is more conducive to the finishing processing of the workpiece.

[0007] The above-mentioned finishing processing device based on extrusion rolling and the finishing processing method based on extrusion rolling are technically related to each other and belong to the same inventive concept.

[0008] In order to achieve the above-mentioned first invention purpose, the present invention adopts the following technical scheme: a finishing processing device based on extrusion rolling grinding, including a frame, a silo, a turntable mechanism, and a pressure mechanism, the turntable mechanism includes a turntable and a turntable driving mechanism for driving the turntable to rotate, the pressure mechanism includes a pressure plate and a pressure plate driving mechanism for driving the pressure plate to move, the turntable and the pressure plate are both installed in the silo and the workpiece and the grinding part are located between the turntable and the pressure plate.

[0009] As a preferred solution of the present invention, the turntable drive mechanism includes a power motor, a sealing gasket, a main shaft, a thrust bearing, a bearing cover, a sealed bearing, a coupling and a locking piece. The main shaft is equipped with a thrust bearing and a sealed bearing. The bearing cover is installed on the sealed bearing and connected to the silo bracket. The upper and lower ends of the coupling are respectively connected to the main shaft and the power motor. The main shaft passes through the turntable and is locked by the locking piece.

[0010] As a preferred solution of the present invention, the sealing gasket is sleeved outside the thrust bearing and is arranged at the bottom of the silo.

[0011] As a preferred embodiment of the present invention, the pressure plate driving mechanism includes a lead screw, a pressure upper plate, a limit bolt, a limit nut, an elastic member, a sleeve with an internal thread, a rotating armrest, a locking member and a nut. The limit bolt has a threaded section and a bare rod section. The elastic member is sleeved on the outside of the bare rod section of the limit bolt and is located between the pressure upper plate and the pressure plate. The limit nut is spirally connected to the threaded section of the limit bolt and is located above the pressure upper plate. The lead screw is inserted into the sleeve and threadedly connected to the sleeve. The rotating armrest is close to the upper end of the lead screw.

[0012] As a preferred solution of the present invention, the pressure plate driving mechanism further includes a lead screw fixing clamp, which is mounted on the lead screw and located above the sleeve.

[0013] As a preferred solution of the present invention, the shape and size of the pressure plate are compatible with the rotating plate.

[0014] As a preferred solution of the present invention, a plurality of the limiting bolts are equidistantly arranged along the circumference of the pressure plate.

[0015] As a preferred solution of the present invention, it also includes a silo bracket, and the silo is installed above the silo bracket.

[0016] As a preferred solution of the present invention, the lead screw is installed on a lead screw bracket.

[0017] Compared with the prior art, it has the following beneficial effects:

[0018] 1. The present invention is a finishing device based on extrusion rolling. The pressure plate driving mechanism drives the pressure plate to apply a certain working pressure to the workpiece and the grinding piece in the feeding bin. Due to the existence of pressure, the cutting force between the grinding piece and the workpiece is greater, so the processing efficiency of the device is higher; and the turntable driving mechanism drives the turntable to rotate, which can drive the workpiece and the grinding piece to grind each other in a circular motion, thereby realizing low-cost, high-efficiency, and large-scale finishing of the workpiece. The device has an ingenious structure and a high degree of mechanization, which is conducive to the application and promotion of the processing device in the field of precision and ultra-precision processing technology.

[0019] 2. The turntable drive mechanism of the device includes a power motor, which drives the turntable in the silo to rotate, thereby driving the workpiece and the grinding piece to rotate and grind each other. The power motor can control the rotation rate and time of the turntable to ensure the desired polishing degree of the workpiece.

[0020] 3. The pressure mechanism of the device is equipped with elastic parts, which can allow the pressure plate to move up and down with the changes of the workpiece and the grinding part, ensuring that the workpiece and the grinding part in the silo will not produce a constant volume that will cause the abrasive particles to be unable to move, and will not cause the grinding part to be over-cut due to excessive pressure, resulting in waste parts, thereby improving the polishing effect of the workpiece.

[0021] 4. The pressure plate driving mechanism of the device is provided with a lead screw, which is threadedly connected to the sleeve. The lead screw is rotated to press the pressure plate downward so that the pressure of the pressure plate on the workpiece and the grinding part reaches the required value, which is easy to operate.

[0022] 5. The rotating disk in the silo of the device cooperates with the pressure disk to provide space for the workpiece and the grinding piece to rotate. The rotation of the rotating disk will generate centrifugal force for the workpiece and the grinding piece to make circular motion in the silo, fully mix and contact, and improve the grinding efficiency.

[0023] In order to achieve the above-mentioned second invention purpose, the present invention adopts the following technical scheme: a finishing processing method based on extrusion rolling grinding, based on a processing device based on extrusion rolling grinding, comprising the following steps: Step 1, placing the workpiece and the grinding part in a silo, and located between a turntable and a pressure plate; Step 2, rotating the lead screw of the pressure plate driving mechanism, pressing the lead screw downward, so that the pressure plate is pressed on the workpiece and the grinding part, and fixing the lead screw with a lead screw fixing clamp; Step 3, starting the turntable driving mechanism, the turntable rotates, so that the workpiece and the grinding part make a circular motion in the silo, are fully mixed, and the grinding part grinds the workpiece to realize the grinding processing of the workpiece.

[0024] Compared with the prior art, the beneficial effects of the present invention are: a finishing method based on extrusion rolling of the present invention, compared with the V-groove processing method and related finishing methods in the prior art, realizes batch processing by placing a large number of workpieces to be processed between the turntable and the pressure plate, thereby improving the processing efficiency while ensuring the finishing quality of the workpiece, which is conducive to the promotion and application of the above-mentioned processing method in the field of precision and ultra-precision processing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a finishing device based on extrusion rolling in an embodiment;

[0026] Figure 2 is a structural cross-sectional view of a finishing device based on extrusion rolling in an embodiment;

[0027] Figure 3 2 is a schematic diagram of the structure of a turntable mechanism of a finishing processing device based on extrusion tumbling in an embodiment;

[0028] Figure 4 2 is a schematic diagram of a pressure mechanism structure of a finishing processing device based on extrusion rolling in an embodiment;

[0029] Figure markings: 1. frame; 2. turntable; 3. silo; 4. silo bracket; 5. turntable drive mechanism; 5-1. power motor; 5-2. sealing gasket; 5-3. main shaft; 5-4. thrust bearing; 5-5. bearing cover; 5-6. sealed bearing; 5-7. coupling; 5-8. locking piece one; 6. pressure plate drive mechanism; 6-1. screw; 6-2. pressure upper plate; 6-3. limiting bolt; 6-4. limiting nut; 6-5. elastic piece; 6-6. sleeve; 6-7. screw fixing clamp; 6-8. rotating armrest; 6-9. locking piece two; 7. pressure plate; 8. screw bracket. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] Example 1: Figures 1 to 4 As shown, a finishing processing device based on extrusion rolling is mainly composed of a frame 1, a silo 3, a turntable mechanism and a pressurizing mechanism. The frame 1 is a square frame composed of multiple aluminum profiles and a frame aluminum plate. The silo bracket 4 and the lead screw bracket 8 are fixedly installed on the frame 1 through bolt connection, and the silo 3 is installed on the above silo bracket 4. The turntable mechanism includes a turntable 2 and a turntable driving mechanism 5. The turntable driving mechanism 5 drives the turntable 2 to rotate. The turntable driving mechanism 5 includes a power motor 5-1 and a spindle 5-3. The spindle 5-3 is installed at the output end of the power motor 5-1 and passes through the above silo bracket 4 and the above silo 3 to connect with the turntable 2. The power motor 5-1 is installed on the aluminum plate of the frame 1; the pressurizing mechanism includes a pressurizing plate driving mechanism 6 and a pressurizing plate 7. The pressurizing mechanism is located above the turntable 2 and installed on the lead screw bracket 8. Before the whole device works, steel balls, zirconium oxide grinding beads and grinding liquid are placed in the above-mentioned silo 3, and the above-mentioned pressure plate driving mechanism 6 pushes the above-mentioned pressure plate 7 to move, so that the pressure plate 7 presses the steel balls, zirconium oxide grinding beads and grinding liquid, and applies pressure to the steel balls, zirconium oxide grinding beads and grinding liquid as a whole, and then the power motor 5-1 is turned on to drive the turntable 2 of the turntable mechanism to rotate, so that the steel balls, zirconium oxide grinding beads and grinding liquid perform circular rotation in the silo 3, and the grinding and polishing of the steel balls by the grinding parts are realized. The workpiece of this embodiment is a steel ball with a diameter of 6mm, and the grinding parts are zirconium oxide grinding beads with a diameter of 2mm and grinding liquid containing aluminum oxide. Since the zirconium oxide material has high strength, hardness and good wear resistance, it can be used as a grinding part. The above-mentioned turntable 2 drives the steel balls, grinding beads and grinding liquid in the hopper 3 to rotate, and there is a speed difference between the grinding beads and steel balls at the bottom and the grinding beads and steel balls at the top, and the grinding beads and steel balls at the bottom and the top will grind each other, so that the grinding between the grinding beads and the steel balls is more complete; due to the existence of a large working pressure, the grinding beads adhere to the abrasive in the grinding liquid to micro-grind the steel balls, thereby completing the finishing of the steel balls. Compared with the prior art, the finishing processing device can control the working pressure during processing, and can control the speed and rotation time of the power motor 5-1 as required, so as to achieve different polishing degrees, improve the processing efficiency of the steel balls, and ensure the polishing effect.

[0032] like Figure 2 and Figure 3As shown, the turntable drive mechanism 5 of this embodiment also includes a sealing gasket 5-2, a thrust bearing 5-4, a bearing cover 5-5, a sealed bearing 5-6, a coupling 5-7 and a locking member 5-8. The upper end of the coupling 5-7 is connected to the above-mentioned main shaft 5-3. The main shaft 5-3 is equipped with a thrust bearing 5-4 and a sealed bearing 5-6, and the bearing cover 5-5 is installed on the sealed bearing 5-6 and is threadedly connected to the top plate of the silo bracket 4. Therefore, the sealed bearing 5-6 and the bearing cover 5-5 are connected and installed under the top plate of the silo bracket 4, so that the main shaft 5-3 is separated from the silo 3, so as to achieve a sealing effect and prevent the workpiece and the grinding parts from falling. The sealing pad 5-2 is placed at the bottom of the silo 3 and mounted on the thrust bearing 5-4. The turntable 2 is mounted on the upper end of the main shaft 5-3 through a flat key. In order to prevent the turntable 2 from moving up and down, a locking member 5-8 is set as a locking nut. The turntable 2 is fixed to the thrust bearing 5-4 through the locking nut, and the polyurethane pad is separated from the turntable 2 by a certain distance through the thrust bearing 5-4, which reduces the rotation resistance of the turntable 2. The sealing pad 5-2 is made of polyurethane. Due to its high strength and wear resistance, it can play a filling role and also prevent the material particles falling from the turntable 2 from causing vibration. The surface of the turntable 2 is provided with reinforcing ribs distributed at equal angles, which not only increases the firmness of the turntable 2, but also helps to drive the steel balls and grinding parts to move; on the other hand, the rotation of the turntable 2 will cause the steel balls and grinding parts to generate centrifugal force, make a circular rotation in the silo 3, fully mix and contact, increase the grinding quality, and improve the processing efficiency.

[0033] In order to allow the above-mentioned turntable 2 to be controlled to rotate by the power motor 5-1, the lower end of the coupling 5-7 is connected to the power motor 5-1 through a flat key. When the power motor 5-1 is running, the coupling 5-7 will be driven to rotate, and the main shaft 5-3 connected to the coupling 5-7 will also rotate accordingly, thereby prompting the turntable 2 connected to the main shaft 5-3 through the flat key to rotate, but the sealing gasket 5-2 and the bearing cover 5-5 remain fixed due to the effect of the bearing. In order to make the resistance of the turntable 2 to rotate smaller, the circumferential side of the turntable 2 is set to be separated from the polyurethane pad 5-2 by a corresponding distance, so that the turntable 2 does not contact the sealing gasket 5-2, but it can also prevent the steel balls and grinding beads from falling, ensuring the effect of the finishing process.

[0034] like Figure 2 and Figure 4As shown, the pressure plate driving mechanism 6 of this embodiment includes a lead screw 6-1, a pressure upper plate 6-2, a limit bolt 6-3, a limit nut 6-4, an elastic member 6-5, a sleeve 6-6, a lead screw fixing clamp 6-7, a rotating handrail 6-8 and a locking member 6-9. A plurality of limit bolts 6-3 are installed on the pressure plate 7 in a circular shape with equal spacing. The threaded section of each limit bolt 6-3 is installed with a limit nut 6-4. The bare rod section is provided with an elastic member 6-5. The pressure upper plate 6-2 is arranged above the elastic member 6-5 and is located at the bare rod section. Therefore, the elastic member 6-5 is located between the pressure plate 7 and the pressure upper plate 6-2. The elastic member 6-5 is set as a spring, and a force is applied to the pressure plate 7 by the spring, so that the pressure plate 7 moves down to be able to press the steel balls and the grinding parts, and a certain working pressure is formed on the steel balls and the grinding parts in the silo 3. The lead screw 6-1 is equipped with two thrust bearings located at the upper and lower sides of the pressurized upper plate 6-2, respectively. The lower thrust bearing is fixed to the pressurized upper plate 6-2 through a nut 6-4, and the upper thrust bearing is pressed and fixed to the pressurized upper plate 6-2 through the lead screw 6-1. The lead screw 6-1 is vertically connected to the pressurized upper plate 6-2 through the thrust bearing and the nut 6-4. In order to enable the lead screw 6-1 to rotate, a rotating handrail 6-8 is installed above the lead screw 6-1, and a locking member 6-9 is set as a locking nut, and the rotating handrail 6-8 is fixed to the lead screw 6-1 with the locking nut. The staff can rotate the rotating handrail 6-8 to rotate the lead screw 6-1, which has a simple structure and saves labor.

[0035] When the device is running, the rotation of the turntable 2 will cause the overall shape of the steel balls, grinding beads and grinding liquid in the silo 3 to change, and the elastic member 6-5 can be set to make the pressure plate 7 move up and down with the movement of the steel balls, grinding beads and grinding liquid in the silo 3, so that the workpiece and the grinding part cannot move due to constant volume. The above-mentioned pressure plate 7 is connected to the above-mentioned pressure plate driving mechanism 6, and the required pressure has been set before processing. The rotating armrest 6-8 is rotated, and the screw 6-1 is rotated and pressed down, so that the pressure upper plate 6-2 connected to the screw 6-1 is pressed down, and the pressure upper plate 6-2 presses the steel balls, grinding beads and grinding liquid through the spring, and the spring produces corresponding deformation, and the pressure plate 7 applies the required pressure to the steel balls and the grinding parts, so that the grinding parts will not over-cut the steel balls due to excessive pressure, resulting in waste parts, which is beneficial to reduce the loss of materials such as workpieces and improve processing efficiency and grinding effect.

[0036] In order to enable the workpieces and grinding parts in the silo 3 to be pressed by the pressure plate 7 and have a certain working pressure, the pressure plate 7 is set to be circular in shape, and its size is adapted to the cross-section of the silo 3, but not in contact with the silo 3. This can not only reduce the resistance of the pressure plate 7 to the up and down movement, but also ensure that the steel balls, grinding beads and grinding liquid are pressurized.

[0037] In order to ensure that the pressure plate 7 of the pressure mechanism can more effectively press the steel ball and the grinding piece, the limit bolt 6-3 with a spring is vertically installed on the pressure plate 7, and each limit nut 6-4 is installed at the same height as the limit bolt 6-3, so that the pressure upper plate 6-2 located between the spring and the limit nut 6-4 is parallel to the pressure plate 7. Therefore, during processing, the pressure plate 7 can fully contact with the steel ball, grinding beads and grinding liquid, making the overall working pressure more stable.

[0038] Since the finishing process requires space for the steel balls and grinding parts to move, the steel balls, grinding beads and grinding fluid are placed between the pressure plate 7 and the turntable 2, and the pressure plate 7 can press the steel balls, grinding beads and grinding fluid so that the finishing process can be carried out in a suitable movement space.

[0039] In order to enable the lead screw 6-1 to move up and down in a direction perpendicular to the above-mentioned turntable 2, the sleeve 6-6 is fixedly installed on the lead screw bracket 8 by bolt connection. Since the sleeve 6-6 is provided with a thread corresponding to the lead screw 6-1, the lead screw 6-1 is threadedly connected through the sleeve 6-6 to ensure that the moving direction of the lead screw 6-1 is always perpendicular to the turntable 2. Due to the threaded connection between the sleeve 6-6 and the lead screw 6-1, the staff can move the lead screw 6-1 up and down by rotating the rotating handrail 6-8, and drive the pressurized upper plate 6-2 connected to the lead screw 6-1 to move, so that the pressurized plate 7 moves up and down with the pressurized upper plate 6-2. When the lead screw 6-1 is pressed down a certain distance, the lead screw fixing clamp 6-7 is installed above the sleeve 6-6 to fix the lead screw 6-1 and prevent it from moving downward. The lead screw 6-1 itself has a self-locking performance and will not move upward. Therefore, the lead screw 6-1 can remain motionless, ensuring a stable working pressure.

[0040] Since the circular motion of the steel balls and the grinding parts is more conducive to full mixing and grinding, the shape of the silo 3 is set to be cylindrical, which is compatible with the turntable 2. In order to ensure the stability of the device operation, the frame 1 is set to be a square aluminum profile frame with an aluminum plate installed on the top, and the aluminum plate is used to carry the silo bracket 4 and the screw bracket 8. The frame 1 is connected by multiple aluminum profiles to form a frame, which not only saves materials but also has good strength. In order to increase the stability of the silo 3, four columns are arranged to be installed on the aluminum plate of the frame 1, and square aluminum plates are installed on the four columns to support the silo 3. The four columns and the square aluminum plates are fixedly connected to form a silo bracket 4. The strength of the aluminum plate is good, and the columns increase the overall firmness of the silo bracket 4. Since the pressurizing mechanism needs to be fixed above the silo 3, four pillars are arranged to be installed on the aluminum plate of the above-mentioned frame 1, and rectangular aluminum plates are fixedly installed on the upper ends of the four pillars. The four pillars and the rectangular aluminum plate are connected to form a screw bracket 8, so that the sleeve 6-6 of the pressurizing mechanism can be fixedly connected to the rectangular aluminum plate by bolts, and the hole in the rectangular aluminum plate for passing the screw 6-1 is not provided with threads.

[0041] Before the operation of the finishing processing device, steel balls, grinding beads and grinding fluid are placed in the hopper 3, and then the rotating armrest 6-8 is rotated to make the screw 6-1 descend, and the pressurized upper plate 6-2 connected to the lower end of the screw 6-1 also descends, prompting the pressurized plate 7 hung on the pressurized upper plate 6-2 by the limit bolts 6-3 and the limit nuts 6-4 to move downward until the pressurized plate 7 is in contact with the steel balls, grinding beads and grinding fluid, but the spring has not yet been compressed and deformed. The distance x1 that the screw 6-1 exceeds the screw bracket 8 is measured with a ruler, and then the screw 6-1 is continued to be rotated, and the pressurized upper plate 6-2 is pressed down, and the spring begins to compress and deform. After being pressed down for a certain distance, the screw 6-1 is fixed with the screw fixing clamp 6-7. The distance x2 that the screw 6-1 exceeds the screw bracket 8 is measured at this time, and the descending distance of the screw 6-1 is x=x1-x2. Then, the power motor 5-1 is turned on to drive the coupling 5-7 to rotate, thereby causing the turntable 2 installed on the main shaft 5-3 to rotate, so that the steel balls, grinding beads and grinding liquid in the silo 3 move in a circular motion and grind each other to achieve the processing effect.

[0042] The method for determining the pressure value F of the finishing process is to multiply the elastic coefficient k of the spring by the distance x that the screw is pressed down, plus the total gravity G of the pressure plate 7, the limit bolt 6-3, the limit nut 6-4 and the spring 6-5, that is, F=kx+G.

[0043] The processing parameters of this embodiment are shown in Table 1:

[0044]

[0045] Table 1

[0046] Before finishing the same batch of steel balls, five steel balls were taken for surface roughness measurement. Each steel ball was measured five times and the average value was taken. The average roughness value was 0.06μm. The working pressure of the pressure plate 6-1 on the steel balls, grinding beads and grinding liquid was set to F=15N, the speed of the turntable 5-1 was v=90rpm, the mass ratio of the grinding liquid was W3 alumina: kerosene: stearic acid=15:100:1, and the finishing time was T=2H. After the finishing of the steel balls was completed under the above processing conditions, five steel balls were taken to measure the surface roughness, and the average roughness value was 0.03μm. The results show that the average roughness of the processed steel balls has dropped from 0.06μm before processing to 0.03μm.

[0047] According to the above-mentioned changes in the surface roughness of the steel ball before and after processing, compared with the traditional grinding process (under the same process conditions), the sphere roughness value obtained by this method is lower. It can be seen that the processing device has a better effect on the finishing of the steel ball.

[0048] A finishing method based on extrusion rolling includes the following steps:

[0049] Step 1: Place the workpiece and the grinding piece in the silo 3 between the turntable 2 and the pressure plate 7;

[0050] Step 2, rotate the lead screw 6-1 of the pressure plate driving mechanism 6, press the lead screw 6-1 downward, so that the pressure plate 7 is pressed on the workpiece and the grinding part, and fix the lead screw 6-1 with the lead screw fixing clamp 6-7;

[0051] Step 3, start the turntable drive mechanism 5, the turntable 2 rotates, so that the workpiece and the grinding piece make a circular motion in the silo 3, are fully mixed, and the grinding piece grinds the workpiece to achieve the grinding process of the workpiece.

[0052] In the present embodiment, a finishing processing device based on extrusion rolling grinding is used. The pressure plate 7 of the pressure mechanism is pressed down to make the pressure plate 7 contact with the steel balls and the grinding parts, and the steel balls and the grinding parts are pressed as a whole to form a certain pressure. During operation, the turntable 2 of the turntable mechanism rotates, causing the steel balls and the grinding parts to make circular motion in the silo 3 and grind each other, thereby improving the polishing quality and processing efficiency of the steel balls. Low-cost, high-efficiency, and large-scale finishing processing of steel balls can be achieved, which is conducive to the application and promotion of the above-mentioned processing device in the field of precision and ultra-precision processing technology.

[0053] Embodiment 2: The feature that distinguishes this embodiment from Embodiment 1 is that: in this embodiment, a finishing processing device based on extrusion rolling is provided, by removing the sleeve 6-6, so that the aluminum plate hole of the lead screw support 8 for passing the lead screw 6-1 is provided with a thread corresponding to the lead screw 6-1, so that the lead screw 6-1 can be threadedly connected to the lead screw support 8. The lead screw 6-1 is rotated according to the required pressure, so that the pressure plate 7 presses the workpiece and the grinding piece, and then the lead screw fixing clamp 6-7 clamps the lead screw 6-1 and is close to the aluminum plate of the lead screw support 8 to prevent the lead screw 6-1 from moving, and then the pressure plate driving mechanism 6 is started to drive the turntable 2 to rotate, so as to promote the movement and grinding of the steel ball and the grinding piece, thereby realizing the grinding processing of the steel ball.

[0054] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0055] Although the following terms are used more frequently in this paper: 1, frame; 2, turntable; 3, silo; 4, silo bracket; 5, turntable drive mechanism; 5-1, power motor; 5-2, sealing pad; 5-3, main shaft; 5-4, thrust bearing; 5-5, bearing cover; 5-6, sealed bearing; 5-7, coupling; 5-8, locking member 1; 6, pressure plate drive mechanism; 6-1, lead screw; 6-2, pressure upper plate; 6-3, limit bolt; 6-4, limit nut; 6-5, elastic member; 6-6, sleeve; 6-7, lead screw fixing clamp; 6-8, rotating handrail; 6-9, locking member 2; 7, pressure plate; 8, lead screw bracket, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A finishing device based on extrusion rolling, characterized in that: The machine comprises a frame (1), a silo (3), a turntable mechanism, and a pressurizing mechanism, wherein the turntable mechanism comprises a turntable (2) and a turntable driving mechanism (5) for driving the turntable (2) to rotate, and the pressurizing mechanism comprises a pressurizing plate (7) and a pressurizing plate driving mechanism (6) for driving the pressurizing plate (7) to move, wherein the turntable (2) and the pressurizing plate (7) are both installed in the silo (3), and the workpiece and the grinding piece are located between the turntable (2) and the pressurizing plate (7); It also includes a silo support (4), and the silo (3) is installed above the silo support (4); The turntable drive mechanism (5) comprises a power motor (5-1), a sealing gasket (5-2), a main shaft (5-3), a thrust bearing (5-4), a bearing cover (5-5), a sealed bearing (5-6), a coupling (5-7) and a locking member (5-8); the main shaft (5-3) is installed with a thrust bearing (5-4) and a sealed bearing (5-6); the bearing cover (5-5) is installed on the sealed bearing (5-6) and connected to the silo bracket (4); the upper and lower ends of the coupling (5-7) are respectively connected to the main shaft (5-3) and the power motor (5-1); the main shaft (5-3) passes through the turntable (2) and is locked by the locking member (5-8); The pressure plate driving mechanism (6) comprises a lead screw (6-1), a pressure upper plate (6-2), a limit bolt (6-3), a limit nut (6-4), an elastic member (6-5), a sleeve (6-6) provided with an internal thread, a rotating armrest (6-8) and a second locking member (6-9), wherein the limit bolt (6-3) has a threaded section and a bare rod section, the elastic member (6-5) is sleeved outside the bare rod section of the limit bolt (6-3) and is located between the pressure upper plate (6-2) and the pressure plate (7), the limit nut (6-4) is spirally connected to the threaded section of the limit bolt (6-3) and is located above the pressure upper plate (6-2), the lead screw (6-1) is inserted into the sleeve (6-6) and is threadably connected to the sleeve (6-6), and the rotating armrest (6-8) is close to the upper end of the lead screw (6-1); The pressure plate driving mechanism (6) further comprises a lead screw fixing clamp (6-7), wherein the lead screw fixing clamp (6-7) is mounted on the lead screw (6-1) and is located above the sleeve (6-6).

2. The finishing device based on extrusion rolling according to claim 1 is characterized in that: The sealing gasket (5-2) is sleeved outside the thrust bearing (5-4) and is arranged at the bottom of the silo (3).

3. The finishing device based on extrusion rolling according to claim 1 is characterized in that: The shape and size of the pressure plate (7) are compatible with the rotating plate (2).

4. The finishing device based on extrusion rolling according to claim 1 is characterized in that: The plurality of limit bolts (6-3) are arranged at equal intervals along the circumference of the pressure plate (7).

5. The finishing device based on extrusion rolling according to claim 1 is characterized in that: The lead screw (6-1) is mounted on a lead screw support (8).

6. A finishing method based on extrusion tumbling, based on a finishing device based on extrusion tumbling as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Place the workpiece and the grinding piece in a hopper (3) between the turntable (2) and the pressure plate (7); Step 2: Rotate the lead screw (6-1) of the pressure plate drive mechanism (6), press the lead screw (6-1) downward, so that the pressure plate (7) is pressed on the workpiece and the grinding piece, and fix the lead screw (6-1) with a lead screw fixing clamp (6-7); Step 3: Start the turntable drive mechanism (5), rotate the turntable (2), make the workpiece and the grinding piece move in a circle in the hopper (3), fully mix them, and grind the workpiece with the grinding piece, so as to achieve grinding processing of the workpiece.

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