Abrasive self-renewal pipe fitting inner wall magnetic grinding machine

Abstract

The invention discloses an abrasive self-renewal pipe fitting inner wall magnetic grinding machine, which relates to the field of machining, and is characterized by comprising a rack, one end of the rack is provided with a grinding device and a magnetic mixed grinding liquid circulating device, the other end of the rack is provided with a pipe fitting clamping device, and the grinding device can extend into a pipe fitting; the grinding machining device comprises a magnetic flow groove piece, a magnetic pole and a driving device, the magnetic flow groove piece comprises a grinding groove and liquid return grooves in the two sides of the grinding groove, and the magnetic mixed grinding liquid can be extracted from the liquid return grooves through a circulating device and flows to the grinding groove; the magnetic pole does linear reciprocating motion below the grinding groove in the length direction of the grinding groove through the driving device, and the pipe fitting clamping device can clamp a pipe fitting and drive the pipe fitting to rotate. The magnetic pole reciprocates below the magnetic flow groove, so that the magnetic flow groove continuously realizes the processes of hardening, liquefying and re-hardening, and the self-renewal of the grinding material is realized.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing, and more specifically, to a magnetic grinding machine for inner wall of a pipe fitting with self-renewing abrasive. Background Art

[0002] The demand for ultra-precision machining of parts in high-tech fields such as aerospace, electronics, automobiles, medical treatment and precision manufacturing is becoming more and more stringent. Traditional grinding methods are difficult to meet the stringent requirements of surface quality, while magnetic grinding technology can process parts with high surface requirements. With the continuous updating and iteration of magnetic grinding technology, its processing efficiency and precision are also constantly upgraded, but traditional magnetic grinding technology cannot fully realize the circulation and renewal of abrasives. Traditional abrasives are prone to wear during the processing process, thereby reducing their service life, thereby increasing processing costs and reducing processing efficiency, and the grinding effect is poor. Taking into account the above shortcomings, the present invention introduces a self-renewing magnetic grinding processing technology for the inner wall of a pipe fitting, extending a magnetic flow slot into the processed pipe fitting, and the magnet reciprocates under the magnetic flow slot to cooperate with the rotation of the pipe fitting to realize the grinding of the inner wall of the straight pipe. The magnetic mixed grinding liquid in the magnetic flow slot continuously realizes the process of hardening, liquefaction, and re-hardening under the influence of the magnet, thereby realizing the self-renewal of the magnetic mixed grinding liquid, and then through the cooperation with the magnetic mixed grinding liquid circulation device, the online reuse of the magnetic mixed grinding liquid is achieved. At present, no one has proposed it at home and abroad, and the market application prospects are broad. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a magnetic grinding machine for the inner wall of a pipe with self-renewal of abrasive.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: a magnetic grinding machine for the inner wall of a pipe with self-renewal of abrasives, comprising a frame, one end of the frame is provided with a grinding processing device and a magnetic mixed grinding liquid circulation device, and the other end is provided with a pipe clamping device, the grinding processing device can extend into the interior of the pipe, the grinding processing device includes a magnetic flow groove part, a magnetic pole and a driving device, the magnetic flow groove part includes a grinding groove and a return liquid groove on both sides of the grinding groove, the grinding groove and the return liquid groove are smoothly connected and the height of the return liquid groove is lower than the height of the grinding groove, the magnetic mixed grinding liquid circulation device extracts magnetic mixed grinding liquid from the return liquid groove and provides magnetic mixed grinding liquid into the grinding groove, the magnetic pole performs a linear reciprocating motion along the length direction of the grinding groove below the grinding groove through the driving device, and the pipe clamping device can clamp the pipe and drive the pipe to rotate.

[0005] The present invention is further configured as follows: a Y-axis feeding device is provided on the frame, and the pipe clamping device is connected to the frame via the Y-axis feeding device.

[0006] The present invention is further configured as follows: a Z-axis feeding device is provided on the frame, and the grinding processing device is connected to the frame via the Z-axis feeding device.

[0007] The present invention is further configured such that: the bottom height of the liquid return groove at one end away from the pipe clamping device is lower than the bottom height of the liquid return groove at one end toward the pipe clamping device.

[0008] The present invention is further configured as follows: the grinding groove is formed by bending a waterproof flexible grinding cloth, and the liquid return groove is made of non-magnetic metal.

[0009] The present invention is further configured as follows: the magnetic mixed grinding liquid circulation device includes a return pipe and a liquid outlet pipe, the ends of the return pipe and the liquid outlet pipe are located at one end of the magnetic flow trough part away from the clamping device of the pipe part, the end of the return pipe extends into the return tank, and the end of the liquid outlet pipe extends into the grinding tank.

[0010] The present invention is further configured as follows: the magnetic mixed grinding liquid circulation device comprises a liquid storage tank for storing the magnetic mixed grinding liquid, and the liquid return pipe and the liquid outlet pipe are both connected to the liquid storage tank.

[0011] The present invention is further configured as follows: the pipe clamping device includes a three-jaw chuck, a drive shaft, and a drive motor; the three-jaw chuck is fixedly connected to one end of the drive shaft; and the output shaft of the drive motor is connected to the drive shaft via a reducer.

[0012] The present invention is further configured such that: the driving device is one of an electric cylinder, a pneumatic cylinder, and a hydraulic cylinder.

[0013] In summary, the present invention has the following beneficial effects: 1. The magnetic poles move back and forth under the magnetic flow slot, so that the magnetic flow slot continuously realizes the process of hardening, liquefaction and re-hardening, thereby realizing the self-renewal of the abrasive.

[0014] 2. The magnetic flow trough can collect the squeezed magnetic mixed grinding fluid, and the magnetic mixed grinding fluid can flow back into the magnetic flow trough through the pump to realize the recycling of the magnetic mixed grinding fluid.

[0015] 3. The Y-axis feeding device is used to change the position of the pipe clamping device and the Z-axis feeding device is used to change the position of the magnetic flow slot and the grinding processing device to coordinate and realize the adaptation of the size of the processed pipe and the adjustment of the processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the magnetic flow channel member in the present invention; Figure 3 It is a partial cross-sectional view of the magnetic flow channel member in the present invention.

[0017] In the figure: 1. frame; 2. grinding processing device; 3. magnetic mixed grinding liquid circulation device; 4. pipe clamping device; 5. magnetic flow channel; 6. magnetic pole; 7. driving device; 8. grinding tank; 9. return liquid tank; 10. Y-axis feeding device; 11. Z-axis feeding device; 12. three-jaw chuck; 13. driving shaft; 14. driving motor. DETAILED DESCRIPTION

[0018] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Embodiment: A magnetic grinding machine for inner wall of pipe fittings with self-renewal of abrasive, such as Figure 1-3 As shown, it includes a frame 1, one end of the frame 1 is provided with a grinding device 2 and a magnetic mixed grinding liquid circulation device 3, and the other end is provided with a pipe clamping device 4, the grinding device 2 can extend into the pipe, the grinding device 2 includes a magnetic flow slot part 5, a magnetic pole 6 and a driving device 7, the magnetic flow slot part 5 includes a grinding slot 8 and a return liquid slot 9 on both sides of the grinding slot 8, the grinding slot 8 and the return liquid slot 9 are smoothly connected and the height of the return liquid slot 9 is lower than the height of the grinding slot 8, the magnetic mixed grinding liquid circulation device 3 extracts magnetic mixed grinding liquid from the return liquid slot 9 and provides magnetic mixed grinding liquid to the grinding slot 8, the magnetic pole 6 makes a linear reciprocating motion along the length direction of the grinding slot 8 below the grinding slot 8 through the driving device 7, the three-jaw chuck 12 in the pipe clamping device 4 can clamp the workpiece, the driving motor 14 drives the three-jaw chuck 12 through a pulley and finally rotates the workpiece, and the magnetic mixed grinding liquid is also provided with a baffle to prevent the magnetic mixed grinding liquid from flowing down from the magnetic mixed grinding liquid.

[0020] A Y-axis feeding device 10 is provided on the frame 1, and the pipe clamping device 4 is connected to the frame 1 through the Y-axis feeding device 10. The Y-axis feeding device 10 includes a slide rail, and the pipe clamping device 4 can approach and move away from the grinding processing device 2 through the slide rail.

[0021] A Z-axis feeding device 11 is provided on the frame 1, and the grinding processing device 2 is connected to the frame 1 through the Z-axis feeding device 11. The Z-axis feeding device 11 is a screw slider mechanism and a motor. The grinding processing device 2 is fixed to the slider, and the grinding processing device 2 can be moved up and down by rotating the motor.

[0022] The bottom height of the return liquid tank 9 at the end away from the pipe clamping device 4 is lower than the bottom height of the return liquid tank 9 at the end toward the pipe clamping device 4. The magnetic mixed grinding liquid circulation device 3 includes a return liquid pipe and a liquid outlet pipe. The ends of the return liquid pipe and the liquid outlet pipe are located at the end of the magnetic flow tank 5 away from the clamping device of the pipe. The end of the return liquid pipe extends into the return liquid tank 9, and the end of the liquid outlet pipe extends into the grinding tank 8. The magnetic mixed grinding liquid falling from the grinding tank 8 into the return liquid tank 9 will gather toward the end of the return liquid tank 9 away from the pipe clamping device 4, so that the return liquid pipe can conveniently circulate the magnetic mixed grinding liquid.

[0023] The grinding groove 8 is formed by bending a waterproof flexible grinding cloth, and the liquid return groove 9 is made of non-magnetic metal.

[0024] The magnetic mixed grinding liquid circulation device 3 comprises a liquid storage tank for storing the magnetic mixed grinding liquid, and the liquid return pipe and the liquid outlet pipe are both connected to the liquid storage tank.

[0025] The driving device 7 is one of an electric cylinder, a pneumatic cylinder, and a hydraulic cylinder. More specifically, the driving device 7 is an electric cylinder.

[0026] Installation and positioning of pipe fittings: First, fix the pipe fittings to be processed on the pipe fitting clamping device 4 (i.e., the three-jaw chuck 12) to ensure that the workpiece is firmly clamped. The position of the pipe fitting is adjusted by the Y-axis feeding device 10 so that the grinding device 2 (including the magnetic flow channel 5 and the magnetic pole 6) can penetrate into the middle position of the pipe fitting, ensuring that the grinding process can be carried out within the full length of the pipe fitting.

[0027] Adjustment of the grinding device and the inner wall of the pipe: Use the Z-axis feeding device 11 to adjust the height of the grinding device 2 so that the magnetic flow groove and the grinding device are close to the upper inner wall of the pipe to ensure that the grinding action can act evenly on the inner wall surface.

[0028] Grinding process: After the position is fixed, the grinding device 2 starts to work. The electric cylinder drives the magnetic pole 6 to perform a linear reciprocating motion. The movement of the magnetic pole 6 causes the magnetic mixed grinding fluid in the magnetic flow tank to be magnetically hardened at different positions under the action of the magnetic field, that is, the magnetic abrasive in the magnetic mixed grinding fluid is bound by the magnetic force to form a hard grinding action area.

[0029] Pipe rotation and synchronous grinding: At the same time, the pipe is processed synchronously by the rotation of the clamping device. During the rotation process, different positions of the inner wall of the pipe come into contact with the magnetic mixed grinding liquid, and the abrasive grinds the inner wall surface of the pipe evenly under the action of the magnetic field.

[0030] Recycling of magnetic mixed grinding fluid: During the grinding process, the abrasive in the magnetic mixed grinding fluid is squeezed during grinding, and the magnetic mixed grinding fluid produced by grinding flows back to the return tank 9 through the magnetic mixed grinding fluid circulation device 3, and is injected into the grinding tank 8 again for recycling. This ensures the efficient use of abrasives and magnetic mixed grinding fluid and reduces waste.

[0031] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A magnetic grinding machine for inner wall of pipe fittings with self-renewal of abrasive, characterized in that: The invention comprises a frame (1), one end of which is provided with a grinding device (2) and a magnetic mixed grinding liquid circulation device (3), and the other end of which is provided with a pipe clamping device (4), the grinding device (2) can extend into the interior of the pipe, the grinding device (2) comprises a magnetic flow channel member (5), a magnetic pole (6) and a driving device (7), the magnetic flow channel member (5) comprises a grinding groove (8) and return liquid grooves (9) on both sides of the grinding groove (8), the grinding groove (8) and the return liquid groove (9) are smoothly connected and the height of the return liquid groove (9) is lower than the height of the grinding groove (8), the circulation device extracts the magnetic mixed grinding liquid from the return liquid groove (9) and flows it into the grinding groove (8), the magnetic pole (6) performs a linear reciprocating motion below the grinding groove (8) along the length direction of the grinding groove (8) through the driving device (7), and the pipe clamping device (4) can clamp a workpiece and drive the workpiece to rotate.

2. The abrasive self-renewing pipe inner wall magnetic grinding machine according to claim 1, characterized in that: The frame (1) is provided with a Y-axis feeding device (10), and the pipe clamping device (4) is connected to the frame (1) via the Y-axis feeding device (10).

3. The abrasive self-renewing pipe inner wall magnetic grinding machine according to claim 1, characterized in that: The frame (1) is provided with a Z-axis feeding device (11), and the grinding processing device (2) is connected to the frame (1) via the Z-axis feeding device (11).

4. The abrasive self-renewing pipe inner wall magnetic grinding machine according to claim 1, characterized in that: The bottom height of the liquid return groove (9) at the end away from the pipe fitting clamping device (4) is lower than the bottom height of the liquid return groove (9) at the end facing the pipe fitting clamping device (4).

5. The abrasive self-renewing pipe inner wall magnetic grinding machine according to claim 4, characterized in that: The grinding groove (8) is formed by bending a waterproof flexible grinding cloth, and the liquid return groove (9) is made of non-magnetic metal.

6. The magnetic grinding machine for inner wall of pipe fittings with self-renewal of abrasives according to claim 4, characterized in that: The magnetic mixed grinding liquid circulation device (3) comprises a liquid return pipe and a liquid outlet pipe, the ends of the liquid return pipe and the liquid outlet pipe are located at one end of the magnetic flow channel member (5) away from the clamping device of the pipe member, the end of the liquid return pipe extends into the liquid return tank (9), and the end of the liquid outlet pipe extends into the grinding tank (8).

7. The abrasive self-renewing pipe inner wall magnetic grinding machine according to claim 6, characterized in that: The magnetic mixed grinding liquid circulation device (3) comprises a liquid storage tank for storing the magnetic mixed grinding liquid, and the liquid return pipe and the liquid outlet pipe are both in communication with the liquid storage tank.

8. The abrasive self-renewing pipe inner wall magnetic grinding machine according to claim 1, characterized in that: The pipe fitting clamping device (4) comprises a three-jaw chuck (12), a drive shaft (13), and a drive motor (14); the three-jaw chuck (12) and one end of the drive shaft (13) are fixedly connected; and the output shaft of the drive motor (14) is connected to the drive shaft (13) via a speed reducer.

9. The abrasive self-renewing pipe inner wall magnetic grinding machine according to claim 1, characterized in that: The driving device (7) is one of an electric cylinder, a pneumatic cylinder, and a hydraulic cylinder.

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