CN110576340A - Surface treatment device for inner wall of additive manufacturing pipe fitting - Google Patents
Surface treatment device for inner wall of additive manufacturing pipe fitting Download PDFInfo
- Publication number
- CN110576340A CN110576340A CN201810581812.8A CN201810581812A CN110576340A CN 110576340 A CN110576340 A CN 110576340A CN 201810581812 A CN201810581812 A CN 201810581812A CN 110576340 A CN110576340 A CN 110576340A
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- electromagnet
- pipe fitting
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- clamp
- piston
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- 239000000654 additive Substances 0.000 title claims abstract description 26
- 230000000996 additive effect Effects 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000004381 surface treatment Methods 0.000 title claims abstract description 18
- 230000009471 action Effects 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000005111 flow chemistry technique Methods 0.000 claims abstract description 14
- 238000009826 distribution Methods 0.000 claims abstract description 10
- 230000005284 excitation Effects 0.000 claims abstract description 3
- 238000003754 machining Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 11
- 239000003082 abrasive agent Substances 0.000 claims description 4
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 12
- 238000005498 polishing Methods 0.000 description 8
- 230000003746 surface roughness Effects 0.000 description 8
- 239000002245 particle Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000010884 ion-beam technique Methods 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/005—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes using a magnetic polishing agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
the invention aims to provide a surface treatment device for an inner wall of an additive manufacturing pipe fitting, which aims at the characteristic of uneven roughness distribution and realizes directional treatment on the local surface of the inner wall. The device for processing the inner wall surface of the additive manufacturing pipe fitting comprises an abrasive flow processing system, an electromagnetic control system, an electromagnet and an electromagnet clamp, wherein the electromagnet is installed at a position, needing directional enhanced grinding, of the processed pipe fitting through the electromagnet clamp, and an external magnetic field is provided through excitation of the electromagnet by the electromagnetic control system, so that in the abrasive flow processing process, the magnetic abrasive can generate directional pressure on the surface to be processed of the processed pipe fitting under the action of the external magnetic field. Another objective of the present invention is to provide a method for processing the inner wall surface of an additive manufacturing pipe, which uses the apparatus for processing the inner wall surface of the additive manufacturing pipe.
Description
Technical Field
The invention relates to an additive manufacturing part surface treatment device.
Background
The additive manufacturing can directly form complex structural parts, including inner cavities, space bent pipelines and the like, but the surface roughness of formed parts is larger, generally larger than Ra3.2, and the parts have the characteristic of uneven roughness distribution. For example, in the case of additive manufactured shaped tubing, the roughness is typically much higher on one side of the inner wall of the tubing than on the other side. The traditional part surface treatment process mainly comprises ion beam polishing, electrochemical polishing (electrolytic polishing), vibration finishing and abrasive flow processing.
Wherein ion beam polishing can achieve excellent surface roughness, but with lower material removal rates, is generally suitable for further reducing surface roughness after achieving a smoother surface. The electrochemical polishing (electrolytic polishing) takes a polished workpiece as an anode and insoluble metal as a cathode, the two electrodes simultaneously enter an electrolytic tank, and direct current is supplied to the electrolytic tank to generate the effect of dissolving the anode, thereby achieving the effect of surface finishing. The vibration polishing decoration uses a vibration motor as an excitation source to drive a grinding block in the equipment and a polished workpiece to generate relative motion, so as to achieve the purpose of surface finishing. The transmission abrasive flow processing is to press semisolid paste abrasive into the inner cavity of a workpiece through a piston, and polish the surface of the workpiece through abrasive particles in the abrasive particles.
The existing surface treatment process can not carry out directional treatment according to the roughness conditions of different positions.
Disclosure of Invention
the invention aims to provide a surface treatment device for an inner wall of an additive manufacturing pipe fitting, which aims at the characteristic of uneven roughness distribution and realizes directional treatment on the local surface of the inner wall.
The surface treatment device for the inner wall of the additive manufacturing pipe fitting comprises an abrasive flow processing system, an electromagnetic control system, an electromagnet and an electromagnet clamp, wherein the electromagnet is mounted at a position, needing directional enhanced grinding, of the processed pipe fitting through the electromagnet clamp, and the electromagnet is excited by the electromagnetic control system to provide an external magnetic field, so that in the abrasive flow processing process, the magnetic abrasive can generate directional pressure on the surface to be treated of the processed pipe fitting under the action of the external magnetic field.
In one embodiment, the abrasive flow processing system comprises a first piston rod, a first piston, a first cylinder clamp, a second piston, and a second piston rod, wherein the first cylinder clamp and the second cylinder clamp are used for fixing a processing pipe, and the two ends of the processing pipe are respectively connected with the first cylinder body and the second cylinder body which are respectively used for storing magnetic grinding materials, the first piston rod is connected with the first piston, the second piston rod is connected with the second piston, the first piston and the second piston are respectively arranged in the first cylinder body and the second cylinder body, under the alternate action of the first piston rod, the first piston, the second piston rod and the second piston, the magnetic grinding materials reciprocate in the processing pipe fitting between the first cylinder body and the second cylinder body in the form of abrasive particle flow.
In one embodiment, the electromagnet is clamped by the electromagnet clamp at a position corresponding to the larger roughness of the machined pipe fitting and is kept away from the machined pipe fitting.
In one embodiment, the electromagnet is a combination of a plurality of electromagnets, and the electromagnetic control system respectively controls the intensity of the magnetic field generated by the single electromagnet according to the distribution of the roughness inside the processed pipe.
Another objective of the present invention is to provide a method for processing an inner wall surface of an additive manufacturing pipe, which uses any one of the aforementioned devices for processing an inner wall surface of an additive manufacturing pipe.
The surface treatment method for the inner wall of the additive manufacturing pipe fitting comprises the steps of determining the roughness and grinding amount requirements of different positions of a to-be-processed pipe fitting; the method comprises the following steps that magnetic grinding materials are adopted in an abrasive flow processing system, an electromagnet for directionally controlling grinding is clamped and clamped by an electromagnet clamp at a position where a grinding action is directionally controlled according to the requirement of processing a pipe; the magnetic abrasive is driven in the abrasive flow processing system to flow in a reciprocating mode in the abrasive flow mode in the processing pipe fitting, and the magnetic abrasive generates directional acting force on the inner surface of the processing pipe fitting under the action of the electromagnet.
In one embodiment, the electromagnet is clamped on the machined pipe fitting through the electromagnet clamp, corresponds to the position with larger roughness and keeps a distance from the machined pipe fitting.
In one embodiment, the electromagnet is a combination of a plurality of electromagnets, and the magnetic field intensity generated by the single electromagnet is respectively controlled according to the distribution of the internal roughness of the processed pipe fitting.
In one embodiment, the electromagnet is clamped by the electromagnet clamp, so that the electromagnetic field generated by the electromagnet generates an oriented action on the magnetic grinding material, and the magnetic grinding material exerts a positive pressure on a position with larger roughness inside the workpiece through the oriented action, thereby generating a larger grinding action.
The positive progress effects of the invention are as follows: the invention can precisely and directionally control the grinding action of the magnetic grinding material aiming at the characteristic of uneven roughness distribution of the inner wall of the processed pipe fitting by utilizing the action of directionally controlling the surface grinding by the magnetic field, and realize directional treatment on the local surface of the inner wall, thereby increasing the grinding on the position with larger roughness of the inner wall of the processed pipe fitting, improving the processing efficiency, weakening the grinding action on the position with smaller roughness, preventing over-grinding, and easily obtaining the workpiece surface with consistent roughness and higher precision at lower cost.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:
Fig. 1 is a schematic top view of an additive manufacturing pipe inner wall surface treatment device according to an embodiment of the present invention.
Fig. 2 and 3 are schematic perspective views of an additive manufacturing pipe inner wall surface treatment device according to an embodiment of the invention.
Fig. 4 is a schematic side view of an additive manufacturing pipe inner wall surface treatment apparatus according to an embodiment of the present invention.
Fig. 5 is a sectional view in the direction a-a of fig. 4.
Fig. 6 is a sectional view in the direction B-B of fig. 5.
Fig. 7 is a partially enlarged view of fig. 6.
Detailed Description
The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the present disclosure, but these are merely examples and do not limit the scope of the invention. For example, if a first feature is formed over or on a second feature described later in the specification, this may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact. Additionally, reference numerals and/or letters may be repeated among the various examples throughout this disclosure. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Further, when a first element is described as being coupled to or associated with a second element, the description includes embodiments in which the first and second elements are directly coupled or associated with each other, as well as embodiments in which one or more additional intervening elements are added to indirectly couple or associate the first and second elements with each other.
Abrasive Flow Machining (Abrasive Flow Machining) is a Machining technique in which an Abrasive having cutting performance is suspended in a fluid as a carrier to form a fluid Abrasive, and surface grinding and polishing are performed by the Flow of the Abrasive relative to a surface to be machined. The abrasive flow machining system can remove and polish burrs on the inner surface and the inner cross surface of a workpiece and an area which cannot be reached by traditional machining, is not limited by geometric shapes, can meet the requirements of better surface roughness and tolerance, and has better repeated accuracy and machining stability.
In an embodiment of the present invention, the device for processing the inner wall surface of the additive manufacturing pipe comprises an abrasive flow processing system, an electromagnetic control system, an electromagnet 6 and an electromagnet clamp 5. An electromagnet 6 is arranged at a position of the machined pipe fitting 6 needing directional enhanced grinding through an electromagnet clamp 5, and an external magnetic field is provided through the electromagnet 6 and is excited by an electromagnetic control system, so that the magnetic grinding materials can generate directional pressure on the surface to be processed of the machined pipe fitting 7 under the action of the external magnetic field in the abrasive particle flow machining process. The specific embodiment of the additive manufacturing pipe inner wall surface treatment device is as follows.
Fig. 1-4 are schematic diagrams of an abrasive stream processing system in one or more embodiments.
Specifically, as can be seen from fig. 1 to 3, in one embodiment, the abrasive flow processing system comprises a first piston rod 1, a first piston 2, a first cylinder 3, a first cylinder clamp 4, and a second cylinder clamp 8, a second cylinder 9, a second piston 10, and a second piston rod 11. The processing pipe fitting 7 is arranged between the first cylinder clamp 4 and the second cylinder clamp 8, and the processing pipe fitting 7 is clamped and fixed by the first cylinder clamp 4 and the second cylinder clamp 8. Meanwhile, the first cylinder clamp 4 is communicated with the first cylinder 3, and the second cylinder clamp 8 is communicated with the second cylinder 9, so that the two ends of the machining pipe 7 are respectively connected with the first cylinder 3 and the second cylinder 9, and the first cylinder 3 and the second cylinder 9 are respectively used for storing magnetic grinding materials for machining the surface of the machining pipe 7. The first cylinder 3 is also provided with a first piston 2, and similarly, the second cylinder 9 is provided with a second piston 10. The first piston rod 1 is connected to the first piston 2, the second piston rod 11 is connected to the second piston 10, so that the first piston rod 1 and the second piston rod 11 can drive the first piston 2 and the second piston 10 to move under the action of external force, under the action of reciprocating alternate motion of the first piston rod 1, the first piston 2, the second piston rod 11 and the second piston 10, the magnetic abrasive material is in reciprocating motion in the processing pipe fitting 7 between the first cylinder body 3 and the second cylinder body 9, and the interior of the processing pipe fitting 7 is processed by means of the grinding effect of the magnetic abrasive material on the action surface.
Referring to fig. 5 to 7, fig. 5 is a sectional view taken along a direction a-a in fig. 4, fig. 6 is a sectional view taken along a direction B-B in fig. 5, and fig. 7 is a partially enlarged view of fig. 6. In the embodiment shown in fig. 5, an electromagnet 6 is further arranged between the first cylinder clamp 4 and the second cylinder clamp 8, an electromagnet clamp 5 is arranged outside the electromagnet 6, and the electromagnet 6 is clamped at a position 12 corresponding to the larger roughness of the machined pipe 7 by the electromagnet clamp 5, and meanwhile, a certain distance is kept between the electromagnet 6 and the machined pipe 7. The electromagnet 6 generates an electromagnetic field under the control of the electromagnetic control system, and generates a directional effect on the magnetic grinding materials stored in the first cylinder 3 and the second cylinder 9, so as to drive the magnetic grinding materials to enter the processing pipe 7, and perform position concentration application of positive pressure on a position 12 with larger roughness in the processing pipe 7, so that the magnetic grinding materials generate a larger grinding effect on the surface of the processing pipe 7 at the position 12 with larger roughness, and thus, the grinding efficiency on the surface of a workpiece with larger roughness is improved.
Referring to fig. 6 and 7 in detail, in an embodiment, the electromagnet 6 is a combination of a plurality of electromagnets, and the plurality of electromagnets 6 are circumferentially distributed on the outer circumferential side of the processing pipe 7, so that the individual electromagnets 6 at different positions can be respectively controlled by an electromagnetic control system to generate different magnetic field strengths according to the roughness distribution inside the processing pipe 7, and the magnetic abrasive can be directionally controlled to grind the roughness at different positions due to the directional effect of the magnetic field on the magnetic abrasive, so that the surface processing can be performed by correspondingly concentrating the corresponding magnetic abrasive amount at the positions with different roughness in the processing pipe 7.
The arrangement enables the accuracy and efficiency of surface machining to be improved during abrasive flow machining, and consistent workpiece surface roughness to be achieved by orienting surfaces of different roughness to enhance or attenuate the grinding action.
Under the control of an electromagnetic control system, the electromagnet 6 arranged at the corresponding position generates a larger magnetic field strength for the part with large workpiece roughness, so that the magnetic abrasive generates directional pressure on the surface of the workpiece at the part under the action of an external magnetic field, and the grinding action at the part is directionally enhanced, thereby increasing the processing efficiency for the part with large workpiece roughness. Meanwhile, for the part with smaller surface roughness of the workpiece, the grinding effect at the part can be directionally reduced so as to prevent over-grinding.
In an embodiment of the present invention, an operation method of an additive manufacturing apparatus for processing an inner wall surface of a pipe includes the following steps:
Firstly, determining the surface roughness of workpieces at different positions of a to-be-processed pipe fitting 7, and calculating corresponding grinding quantity requirements according to the different surface roughness of the workpieces;
Secondly, the position of the processed pipe 7 where directional control grinding action is needed is determined according to different grinding amount requirements, and a plurality of independent electromagnets 6 are clamped outside the processed pipe 7 at the position with larger grinding amount requirements through the electromagnet clamp 5.
Then, under the action of the reciprocating alternate motion of the first piston rod 11, the first piston 2, the second piston rod 11 and the second piston 10 which are arranged at the two ends of the processing pipe 7, the magnetic abrasive is driven to enter the processing pipe 7 from the first cylinder 3 and the second cylinder 9 and to reciprocate.
Continuously, the single electromagnet 6 generates magnetic fields with different sizes according to the grinding amount requirement, so that the magnetic abrasive generates different directional acting forces on the inner surface of the machined pipe fitting 7 according to the grinding amount requirement, namely, a larger positive pressure is generated for the part with the large grinding amount requirement to generate a larger grinding effect.
Finally, after a period of time, the machining is completed and a workpiece surface with consistent roughness is formed on the inner surface of the machined pipe 7.
In conclusion, the invention can precisely and directionally control the grinding action of the magnetic abrasive material aiming at the characteristic that the roughness distribution of the inner wall of the processed pipe fitting 7 is uneven by directionally controlling the surface grinding action by using the magnetic field, and realize directional treatment on the local surface of the inner wall, thereby increasing grinding for the position 12 with larger roughness of the inner wall of the processed pipe fitting 7, improving processing efficiency, weakening the grinding action for the position with smaller roughness and preventing over-grinding. The surface treatment method for the inner wall of the additive manufacturing pipe fitting is simple to operate and easy to realize, and the surface of a workpiece with consistent roughness can be easily obtained.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art may make modifications and alterations without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention are within the protection scope defined by the claims of the present invention, unless the technical spirit of the present invention departs from the content of the technical solution of the present invention.
Claims (8)
1. The surface treatment device for the inner wall of the additive manufacturing pipe fitting comprises an abrasive flow machining system and is characterized by further comprising an electromagnetic control system, an electromagnet (6) and an electromagnet clamp (5), wherein the electromagnet (6) is installed through the electromagnet clamp (5) at a position where directional enhanced grinding is needed for machining the pipe fitting (7), an external magnetic field is provided through excitation of the electromagnet (6) by the electromagnetic control system, and therefore the magnetic abrasive can generate directional pressure on the surface to be treated of the machined pipe fitting under the action of the external magnetic field in the abrasive flow machining process.
2. The additive manufacturing pipe inner wall surface treatment device according to claim 1, wherein the abrasive flow processing system comprises a first piston rod (1), a first piston (2), a first cylinder (3), a first cylinder clamp (4), a second cylinder clamp (8), a second cylinder (9), a second piston (10), and a second piston rod (11), the first cylinder clamp (4) and the second cylinder clamp (8) are used for fixing the processing pipe (7), two ends of the processing pipe (7) are respectively connected with the first cylinder (3) and the second cylinder (9), the first cylinder (3) and the second cylinder (9) are respectively used for storing magnetic abrasive, the first piston rod (11) is connected with the first piston (2), and the second piston rod (11) is connected with the second piston (10), the first piston (2) and the second piston (10) are respectively arranged in the first cylinder body (3) and the second cylinder body (9), and under the alternate action of the first piston rod (1), the first piston (2), the second piston rod (11) and the second piston (10), the magnetic abrasive material is in abrasive flow and reciprocates in the processing pipe fitting (7) between the first cylinder body (3) and the second cylinder body (9).
3. The additive manufactured pipe inner wall surface treatment device according to claim 2, characterized in that the electromagnet (6) is clamped by the electromagnet clamp (5) at a position (12) corresponding to a greater roughness in the machined pipe (7) and at a distance from the machined pipe (7).
4. The device for treating the inner wall surface of the additive manufactured pipe fitting according to claim 3, wherein the electromagnet (6) is a combination of a plurality of electromagnets, and the electromagnetic control system respectively controls the intensity of the magnetic field generated by the single electromagnet (6) according to the roughness distribution inside the processed pipe fitting (7).
5. A surface treatment method for the inner wall of an additive manufacturing pipe fitting is characterized in that,
Determining the roughness and grinding quantity requirements of different positions of a to-be-processed pipe fitting (7);
A magnetic abrasive is adopted in the abrasive flow processing system, and an electromagnet (6) for directional control grinding is clamped and clamped by an electromagnet clamp (5) at a position where the grinding action is directionally controlled according to the requirement of processing a pipe (7);
the magnetic abrasive is driven in the abrasive flow processing system, flows in an abrasive flow mode in a reciprocating mode in the processing pipe fitting (7), and generates directional acting force on the inner surface of the processing pipe fitting (7) by the aid of the action of the electromagnet (6).
6. A method according to claim 5, characterized in that the electromagnet (6) is clamped by means of the electromagnet clamp (5) to the machined pipe (7) in correspondence of the location (12) of greater roughness and at a distance from the machined pipe.
7. The method according to claim 5, characterized in that the electromagnet (6) is a combination of a plurality of electromagnets, and the intensity of the magnetic field generated by the individual electromagnets (6) is controlled individually according to the roughness distribution inside the machined pipe (7).
8. a method according to claim 6, characterized in that the electromagnet (6) is clamped by means of an electromagnet clamp (5) so that the electromagnetic field generated by the electromagnet (6) produces a directional effect on the magnetic abrasive, which in turn causes the magnetic abrasive to exert a positive pressure on the locations (12) of greater internal roughness of the workpiece, by means of the directional effect, and thereby produce a greater grinding action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810581812.8A CN110576340A (en) | 2018-06-07 | 2018-06-07 | Surface treatment device for inner wall of additive manufacturing pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810581812.8A CN110576340A (en) | 2018-06-07 | 2018-06-07 | Surface treatment device for inner wall of additive manufacturing pipe fitting |
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| CN110576340A true CN110576340A (en) | 2019-12-17 |
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| CN201810581812.8A Pending CN110576340A (en) | 2018-06-07 | 2018-06-07 | Surface treatment device for inner wall of additive manufacturing pipe fitting |
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| CN112676922A (en) * | 2020-12-23 | 2021-04-20 | 南京航太机电有限公司 | Magnetic grinding device and method for vibrating composite elliptical motion |
| CN114043322A (en) * | 2021-12-08 | 2022-02-15 | 绍兴自远磨具有限公司 | High-precision magnetorheological grinding and polishing process for special-shaped workpiece |
| CN115533763A (en) * | 2022-10-31 | 2022-12-30 | 中国第一汽车股份有限公司 | Pipe fitting inner wall strengthening device |
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| CN114043322A (en) * | 2021-12-08 | 2022-02-15 | 绍兴自远磨具有限公司 | High-precision magnetorheological grinding and polishing process for special-shaped workpiece |
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Application publication date: 20191217 |