CN117984168A - Equipment and method for synchronously treating inner surface and outer surface of seamless metal composite pipe - Google Patents
Equipment and method for synchronously treating inner surface and outer surface of seamless metal composite pipe Download PDFInfo
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- CN117984168A CN117984168A CN202410408683.8A CN202410408683A CN117984168A CN 117984168 A CN117984168 A CN 117984168A CN 202410408683 A CN202410408683 A CN 202410408683A CN 117984168 A CN117984168 A CN 117984168A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005498 polishing Methods 0.000 claims abstract description 163
- 230000001360 synchronised effect Effects 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 12
- 239000000428 dust Substances 0.000 claims description 25
- 238000007517 polishing process Methods 0.000 claims description 25
- 238000011282 treatment Methods 0.000 claims description 23
- 238000011084 recovery Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
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- 238000004381 surface treatment Methods 0.000 abstract description 11
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- 239000010962 carbon steel Substances 0.000 description 2
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention belongs to the technical field of surface treatment of a seamless metal composite pipe, and particularly relates to equipment and a method for synchronously treating the inner surface and the outer surface of the seamless metal composite pipe; the equipment for synchronously treating the inner surface and the outer surface of the seamless metal composite pipe comprises a frame, wherein a first auxiliary driving device and a second auxiliary driving device are fixed on one side of the frame, the first auxiliary driving device is connected with an outer circle clamping grinding and polishing device through a lead screw, and the second auxiliary driving device is connected with an inner circle tensioning grinding and polishing device through the lead screw; the invention can select different polishing plates according to different processing requirements of inner and outer heterogeneous metals, can ensure synchronous movement of the outer circle clamping polishing device and the inner circle tensioning polishing device, and meets the requirement of differential synchronous processing of the inner and outer surfaces.
Description
Technical Field
The invention belongs to the technical field of surface treatment of a seamless metal composite pipe, and particularly relates to equipment and a method for synchronously treating the inner surface and the outer surface of the seamless metal composite pipe.
Background
The seamless metal composite pipe has all the advantages of the base steel pipe and the coating, can effectively reduce the cost compared with the simple substance alloy pipe, and can improve the safety and the reliability in the chloride and acid environment with stress corrosion cracking sensitivity. The seamless metal composite pipe can furthest realize the advantage complementation of materials, reduce the consumption of alloy elements, reduce engineering cost and maintenance cost, simultaneously select corresponding corrosion-resistant alloy materials as the inner lining according to different corrosion mediums, can completely reach the corrosion resistance standard of the corrosion-resistant alloy pipe, has higher pressure-resistant index, improves the corrosion resistance and the wear resistance of the pipeline on the basis of ensuring each performance of the original base pipe, prolongs the service life of the pipeline, is a substitute product of pure stainless steel pipes, copper pipes or other corrosion-resistant alloy pipes, and can be widely applied to the industrial fields of petroleum and natural gas, chemical industry, electric power, coal, boilers, heat exchangers, seawater pipelines and the like.
In recent years, development of rolling compounding technology lays a foundation for preparing a large-length-diameter-ratio seamless metal composite pipe, for example, patent 202211618913.0 discloses a large-length-diameter-ratio heterogeneous metal composite thin-wall pipe progressive skew rolling compounding device and a method thereof, patent 202011450318.1 proposes a three-roller skew rolling forming method of a metal composite pipe with a corrugated joint surface, and 202310822876.3 proposes a high-efficiency sizing adjustment skew rolling device and method of a seamless metal corrugated composite pipe. However, before being actually used in service environment, the seamless metal composite pipe after hot rolling and compounding must be subjected to surface treatment, but due to the difference of functional requirements, the outer layer pipe and the inner layer pipe need to be subjected to different surface treatments, for example, for a carbon steel/stainless steel lining composite pipe, the outer layer carbon steel pipe needs to be polished and roughened for subsequent spraying, and the inner layer stainless steel pipe needs to be polished to improve corrosion resistance.
The development and application of the seamless metal composite pipe are just started, and no special surface treatment equipment exists at present. The surface treatment mode of the existing simple substance seamless steel pipe mainly comprises mechanical polishing and electrolytic polishing, wherein the mechanical polishing method is most used, abrasive materials mainly comprise abrasive belts, sand paper, grinding wheels and the like, and the aim of surface treatment is achieved through rotation of parts or rotation of the abrasive materials. However, the existing surface treatment mode faces a plurality of problems, for example, the polishing effect is greatly affected due to continuous loss of the abrasive in the polishing process, generated dust not only pollutes the surrounding environment, but also causes the problems of abrasive damage, uneven polishing, surface scratches and the like due to uneven abrasion of the abrasive, meanwhile, the abrasive can not keep constant pressure with the seamless steel tube all the time in the polishing process due to the difficulty in clamping or coaxiality of the seamless metal composite tube with a large length-diameter ratio, and uneven polishing of the head and the tail is often generated.
In addition, the surface treatment of the simple substance seamless steel tube is usually independently carried out at present, the existing equipment cannot meet the requirement of the internal and external surface differentiation synchronous treatment of the large-length-diameter-ratio seamless metal composite tube, the simultaneous polishing of the internal and external surfaces of the large-length-ratio tube cannot be realized, and the separate surface treatment not only needs to add a plurality of pieces of equipment, but also can increase additional working procedures, improve the processing cost and reduce the polishing efficiency, and cannot meet the industrial requirement.
Therefore, the special polishing equipment for the seamless metal composite pipe with the large length-diameter ratio needs to be developed, meets the requirements of differential and synchronous treatment of the inner surface and the outer surface, and solves the problems of low polishing efficiency, uneven abrasive wear, poor polishing uniformity, poor surface quality, large dust pollution and the like.
Disclosure of Invention
The invention provides equipment and a method for synchronously processing the inner surface and the outer surface of a seamless metal composite pipe.
The invention adopts the following technical scheme to achieve the aim:
the equipment for synchronously treating the inner surface and the outer surface of the seamless metal composite pipe comprises a frame, a first auxiliary driving device, a second auxiliary driving device, a main driving device, an outer circle clamping grinding and polishing device and an inner circle tensioning grinding and polishing device;
The first auxiliary driving device and the second auxiliary driving device are fixed on one side of the frame, the first auxiliary driving device is connected with the outer circle clamping grinding and polishing device through a lead screw, and the second auxiliary driving device is connected with the inner circle tensioning grinding and polishing device through a lead screw;
The main driving device is positioned at one end of the frame and used for clamping and driving the seamless metal composite pipe to rotate, the outer circle clamping polishing device is positioned at the right side of the main driving device, the main driving device clamps the seamless metal composite pipe and simultaneously supports the outer side of the seamless metal composite pipe, polishing or polishing of the outer surface of the seamless metal composite pipe is realized, and the inner circle tensioning polishing device is positioned at the right side of the outer circle clamping polishing device and used for polishing or polishing the inner surface of the seamless metal composite pipe.
Further, the excircle centre gripping grinds throwing device includes a carriage, a carriage has two, all is connected with auxiliary drive device through the lead screw be provided with on the carriage and move the frame, two be provided with the crossbeam between moving the frame install the anchor clamps that two front and back symmetry set up on the crossbeam, anchor clamps are used for pressing from both sides tight seamless metal composite tube, realize simultaneously to the grinding or the polishing of seamless metal composite tube surface, two install the protective housing jointly on the carriage for cover and move frame, anchor clamps and crossbeam, reduce the loss of throwing and grinding in-process piece.
Still further, the anchor clamps include the connecting plate install No. one linear electric motor on the connecting plate No. one linear electric motor's output installs No. one pressure sensor be connected with the impeller on the pressure sensor No. one the left and right sides symmetry of impeller articulates there are two arm-tie the left and right sides symmetry of connecting plate articulates there are two arm-ties, the other end of arm-tie articulates the toggle department that corresponds arm-tie the lower extreme of impeller installs No. two and grinds the board the lower part of arm-tie articulates there is a No. one and grinds the board the arm-tie still installs on the arm-tie and fix the device No. two pressure sensor is installed to the active end of tight fixing the device, no. two pressure sensor is articulated with a No. one grinds the board for drive No. one grinds the board and rotate, realize the self-adaptation to seamless metal composite pipe outer wall and paste tightly.
Still further, interior circle tensioning grinds throwing device includes No. two slide carriages, no. two slide carriages are connected with No. two auxiliary drive devices through the lead screw install the box on No. two slide carriages fixedly mounted with hollow tube on the box the tip of hollow tube is through flange joint having and grinds the throwing head.
Still further, grind the throwing head and include the dabber, the dabber passes through flange and hollow tube coupling the epaxial fixed mounting of dabber has the triangle seat equal fixed mounting has No. two linear electric motor on three angles of triangle seat No. two linear electric motor output shaft's end is installed No. three pressure sensor install No. three and grind the throwing board on No. three pressure sensor, no. two linear electric motor adjusts according to No. three pressure sensor real-time received No. three grinding throwing board's atress condition, guarantees the invariable atress of whole grinding throwing in-process No. three grinding throwing board.
Still further, still include dust recovery unit, dust recovery unit is located the slide carriage No. two for retrieve the dust that the in-process produced is polished to excircle centre gripping mill throwing device and interior circle tensioning mill throwing device.
Still further, dust recovery unit includes negative pressure fan, hose and No. two hoses, hose and No. two hose's one end all are connected with the air intake of negative pressure fan, no. two hoses are connected with the one end that the hollow tube is close to the box for collect the piece that seamless metal composite tube inner wall grinds the in-process produced the hollow tube is close to a plurality of collecting holes of evenly having seted up in one side that grinds the head, hose and protective housing are connected for collect the piece that the in-process produced is ground to seamless metal composite tube outer wall.
The method for synchronously treating the inner surface and the outer surface of the seamless metal composite pipe comprises the following steps:
S1, outer wall positioning and clamping: the first auxiliary driving device drives the outer circle clamping polishing device to axially move to one end of the seamless metal composite pipe far away from the main driving device, the first linear motor drives the pushing block to move, meanwhile, the two holding arms are driven to carry out holding motion, the second polishing plate is directly attached to the outer wall of the seamless metal composite pipe, the first polishing plate is attached to the outer wall of the seamless metal composite pipe under the action of the fixing device, the clamping of the outer circle clamping polishing device to the seamless metal composite pipe is achieved, the first auxiliary driving device drives the outer circle clamping polishing device to axially move until the other end of the clamped seamless metal composite pipe is contacted with the three-jaw chuck on the main driving device, and then the clamping of the seamless metal composite pipe is achieved by the three-jaw chuck;
S2, inner wall tensioning clamping: the second auxiliary driving device drives the inner circle tensioning polishing device to axially move, so that the polishing head is just positioned at the inlet of the inner wall of the seamless metal composite pipe, at the moment, three second linear motors which are circumferentially arranged are controlled to drive the third polishing plate to extend out, the inner wall of the seamless metal composite pipe is tensioned, the same pretightening force is set in three circumferential directions according to the processing requirement of the seamless metal composite pipe, and the third pressure sensor senses the stress condition of the third polishing plate in real time in the tensioning process until the tensioning work is completed after the pressure exerted by the three third polishing plates completely reaches the set pretightening force, so that the tensioning clamping of the inner wall of the seamless metal composite pipe is realized;
S3, internal and external synchronization processing: the primary driving device drives the seamless metal composite pipe to rotate, the secondary driving device drives the inner circle tensioning grinding and polishing device to axially displace at a constant speed, and the primary auxiliary driving device drives the outer circle clamping grinding and polishing device to axially displace at a constant speed, so that synchronous grinding and polishing treatment on the inner surface and the outer surface of the seamless metal composite pipe is realized;
S4, stable and uniform polishing: the first linear motor and the tightening device in the outer circle clamping polishing device always keep working states, the second polishing plate and the first polishing plate are regulated in real time according to data of the first pressure sensor and the second pressure sensor, so that pressure between the second polishing plate and the outer wall of the seamless metal composite pipe is kept uniform in the polishing process, the inner circle tensioning polishing device dynamically monitors pressure between the third polishing plate and the inner wall of the seamless metal composite pipe on line through the third pressure sensor, the second linear motor regulates according to pressure signals received by the third pressure sensor in real time, constant stress of the third polishing plate in the whole polishing process is guaranteed, and meanwhile, the dust recovery device keeps working in the whole polishing process, and dust generated in the treatment process of the seamless metal composite pipe is collected.
Further, the outer circle clamping grinding and polishing device and the inner circle tensioning grinding and polishing device are kept to move synchronously in the axial direction, and synchronous treatment of the inner surface and the outer surface of the seamless metal composite pipe is guaranteed.
Compared with the prior art, the invention has the following beneficial effects:
The invention aims at the problems that the existing equipment cannot meet the requirements of the inner and outer surface differentiation synchronous treatment and the polishing efficiency of the separate procedure treatment of the seamless metal composite pipe with large length-diameter ratio, designs the outer circle clamping polishing device and the inner circle tensioning polishing device, can select different polishing plates according to the different treatment requirements of the inner and outer heterogeneous metals, can simultaneously ensure the synchronous movement of the outer circle clamping polishing device and the inner circle tensioning polishing device, meets the requirements of the inner and outer surface differentiation synchronous treatment, reduces the treatment procedures, improves the treatment efficiency, reduces the treatment cost, shortens the treatment period and meets the industrialization requirements;
According to the invention, aiming at the problems of abrasive damage, uneven polishing, surface scratch and the like caused by uneven abrasion of abrasive materials, two clamps which are arranged in a staggered manner are arranged in an outer circle clamping polishing device, so that the stability of axial support of a composite pipe in the polishing process is improved, in addition, a tightening device is also arranged, a first polishing plate is tightly propped by the tightening device, a second polishing plate is tightly propped by a first linear motor, the first polishing plate and the second polishing plate are tightly adhered to the outer wall of a seamless metal composite pipe and keep the constant pressure, the problem of uneven stress in the polishing process is greatly avoided, the utilization rate of abrasive materials is greatly improved, the circumferential and axial uniformity of the outer wall of the seamless metal composite pipe in the surface treatment process is improved, the pressure between the third polishing plate and the inner wall of the seamless metal composite pipe is dynamically monitored on line by a third pressure sensor, the pressure between the third polishing plate and the inner wall of the seamless metal composite pipe is kept uniform in the polishing process by the second linear motor, the uniformity of the inner wall and the axial uniformity of the inner wall of the seamless metal composite pipe in the polishing process are improved, and the rejection quality of a blank in the polishing process is even greatly improved due to the fact that the pressure in the polishing process is greatly improved;
According to the invention, aiming at the problems of dust pollution or surface scratch caused by untimely cleaning of scraps in the grinding and polishing process, dust generated in the inner wall and outer wall treatment process is timely treated by arranging the dust recovery device, and the dust generated in the grinding process cannot timely leave the inner cavity of the seamless metal composite tube due to the fact that the inner wall is in a closed state in the grinding and polishing process.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the structure without the protective shell of the present invention;
FIG. 3 is a schematic structural view of the cylindrical clamping polishing device of the present invention;
FIG. 4 is a schematic view of the structure of the clamp of the present invention;
FIG. 5 is a schematic diagram of the inner circle tensioning polishing device;
FIG. 6 is a schematic view of the abrasive head of the present invention;
In the figure, a frame 1, a first auxiliary driving device 2, a second auxiliary driving device 3, a main driving device 4, an outer circle clamping polishing device 5, an inner circle tensioning polishing device 6, a dust recycling device 7, a first slide plate 501, a row frame 502, a beam 503, a clamp 504, a protective shell 505, a second slide plate 601, a box 602, a hollow tube 603, a polishing head 604, a collecting hole 605, a negative pressure fan 701, a first hose 702, a second hose 703, a connecting plate 5041, a first linear motor 5042, a pushing block 5043, a pulling plate 5044, a holding arm 5045, a second polishing plate 5046, a first polishing plate 5047, a fastening device 5048, a mandrel 6041, a triangle seat 6042, a second linear motor 6043 and a third polishing plate 6044.
Detailed Description
In order to further illustrate the technical scheme of the invention, the invention is further illustrated by the following examples.
As shown in fig. 1 to 6, the equipment for synchronously processing the inner surface and the outer surface of the seamless metal composite pipe comprises a frame 1, a first auxiliary driving device 2, a second auxiliary driving device 3, a main driving device 4, an outer circle clamping grinding and polishing device 5, an inner circle tensioning grinding and polishing device 6 and a dust recycling device 7;
The first auxiliary driving device 2 and the second auxiliary driving device 3 are fixed on one side of the frame 1, the first auxiliary driving device 2 is connected with the outer circle clamping grinding and polishing device 5 through a lead screw, and the second auxiliary driving device 3 is connected with the inner circle tensioning grinding and polishing device 6 through a lead screw;
The main driving device 4 is located at one end of the frame 1 and is used for clamping and driving the seamless metal composite tube to rotate, the outer circle clamping polishing device 5 is located on the right side of the main driving device 4, the main driving device 4 clamps the seamless metal composite tube and simultaneously gives support to the outer side of the seamless metal composite tube and achieves polishing or polishing of the outer surface of the seamless metal composite tube, the inner circle tensioning polishing device 6 is located on the right side of the outer circle clamping polishing device 5 and is used for achieving polishing or polishing of the inner surface of the seamless metal composite tube, the dust recycling device 7 is located on the second slide carriage 601 and is used for recycling dust generated in the polishing process of the outer circle clamping polishing device 5 and the inner circle tensioning polishing device 6.
The excircle centre gripping grinds throwing device 5 includes carriage one 501, carriage one 501 has two, all is connected with auxiliary drive device 2 through the lead screw carriage one is provided with on carriage one 502 and moves the frame 502, is provided with crossbeam 503 between moving the frame two install two anchor clamps 504 that the symmetry set up around on the crossbeam 503, anchor clamps 504 are used for pressing from both sides tight seamless metal composite tube, realize simultaneously to the polishing or the polishing of seamless metal composite tube surface, install protective housing 505 jointly on carriage one 501 for cover moving frame 502, anchor clamps 504 and crossbeam 503, reduce the loss of throwing in-process piece, anchor clamps 504 include connecting plate 5041 install first linear electric motor 5042 on the connecting plate 5041 the output of first linear electric motor 5042 is installed No. one pressure sensor be connected with impeller 5043 the left and right sides symmetry of impeller 5043 articulates there are two pulling plates 5044 respectively, and is realized to the realization is to the polishing to the seamless metal composite tube surface, is equipped with two the support plates 5045 respectively in the opposite directions of two arms 5045 the pair of the same number one, is equipped with the pair of support plates 5045 and is in the tight end of the pair of support plates 5045 the pair of the same, and is realized to the tight arm 5045 the support the end of the support plates 5045 and is in the tight end of the pair of the support plates 5045.
The inner circle tensioning polishing device 6 comprises a second slide carriage 601, the second slide carriage 601 is connected with a second auxiliary driving device 3 through a lead screw, a box 602 is installed on the second slide carriage 601, a hollow pipe 603 is fixedly installed on the box 602, a polishing head 604 is connected to the end of the hollow pipe 603 through a flange, the polishing head 604 comprises a mandrel 6041, the mandrel 6041 is connected with the hollow pipe 603 through a flange, a triangular base 6042 is fixedly installed on the mandrel 6041, a second linear motor 6043 is fixedly installed on three corners of the triangular base 6042, a third pressure sensor is installed at the tail end of an output shaft of the second linear motor 6043, a third polishing plate 6044 is installed on the third pressure sensor, the second linear motor 6043 is adjusted according to the stress condition of the third polishing plate 6044 received by the third pressure sensor in real time, and constant stress of the third polishing plate 6044 in the whole polishing process is ensured.
The dust recovery device 7 comprises a negative pressure fan 701, a first hose 702 and a second hose 703, one ends of the first hose 702 and the second hose 703 are connected with an air inlet of the negative pressure fan 701, the second hose 703 is connected with one end of the hollow tube 603, which is close to the box 602, and is used for collecting scraps generated in the grinding and polishing process of the inner wall of the seamless metal composite tube, a plurality of collecting holes 605 are uniformly formed in one side, close to the grinding and polishing head 604, of the hollow tube 603, and the first hose 702 is connected with the protective shell 505 and is used for collecting scraps generated in the grinding and polishing process of the outer wall of the seamless metal composite tube.
The method for synchronously treating the inner surface and the outer surface of the seamless metal composite pipe comprises the following steps:
S1, outer wall positioning and clamping: the first auxiliary driving device 2 drives the outer circle clamping polishing device 5 to axially move to one end of the seamless metal composite tube far away from the main driving device 4, the first linear motor 5042 drives the pushing block 5043 to move, meanwhile drives the two holding arms 5045 to carry out holding motion, the second polishing plate 5046 is directly attached to the outer wall of the seamless metal composite tube, the first polishing plate 5047 is attached to the outer wall of the seamless metal composite tube under the action of the fixing device 5048, the outer circle clamping polishing device 5 clamps the seamless metal composite tube, the first auxiliary driving device 2 drives the outer circle clamping polishing device 5 to axially move until the other end of the clamped seamless metal composite tube contacts with a three-jaw chuck on the main driving device 4, and then the three-jaw chuck is used for clamping the seamless metal composite tube;
s2, inner wall tensioning clamping: the second auxiliary driving device 3 drives the inner circle tensioning polishing device 6 to axially move, so that the polishing head 604 is just positioned at the inlet of the inner wall of the seamless metal composite pipe, at the moment, three second linear motors 6043 which are circumferentially arranged are controlled to drive the third polishing plate 6044 to extend out, the inner wall of the seamless metal composite pipe is tensioned, the same pretightening force is set in three circumferential directions according to the processing requirement of the seamless metal composite pipe, and the third pressure sensor senses the stress condition of the third polishing plate 6044 in real time in the tensioning process until the tensioning work is completed after the pressure born by the three third polishing plates 6044 completely reaches the set pretightening force, so that the tensioning clamping of the inner wall of the seamless metal composite pipe is realized;
S3, internal and external synchronization processing: the main driving device 4 drives the seamless metal composite pipe to rotate, the second auxiliary driving device 3 drives the inner circle tensioning grinding and polishing device 6 to move at a uniform speed along the axial direction, and the first auxiliary driving device 2 drives the outer circle clamping grinding and polishing device 5 to move at a uniform speed along the axial direction, so that synchronous grinding and polishing treatment on the inner and outer surfaces of the seamless metal composite pipe is realized, and the outer circle clamping grinding and polishing device 5 and the inner circle tensioning grinding and polishing device 6 keep synchronous movement along the axial direction, so that synchronous treatment on the inner and outer surfaces of the seamless metal composite pipe is ensured;
S4, stable and uniform polishing: the first linear motor 5042 and the tightening device 5048 in the outer circle clamping polishing device 5 always keep working states, and are adjusted in real time according to data of the first pressure sensor and the second pressure sensor, so that pressure between the second polishing plate 5046, the first polishing plate 5047 and the outer wall of the seamless metal composite pipe is kept uniform in the polishing process, the inner circle tensioning polishing device 6 dynamically monitors pressure between the third polishing plate 6044 and the inner wall of the seamless metal composite pipe on line through the third pressure sensor, the second linear motor 6043 is adjusted according to pressure signals received by the third pressure sensor in real time, constant stress of the third polishing plate 6044 in the whole polishing process is guaranteed, and meanwhile, the dust recovery device 7 keeps working in the whole polishing process, and dust generated in the treatment process of the seamless metal composite pipe is collected.
While the principal features and advantages of the present invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (9)
1. The utility model provides a seamless metal composite pipe internal and external surface synchronous treatment equipment which characterized in that: comprises a frame (1), a first auxiliary driving device (2), a second auxiliary driving device (3), a main driving device (4), an outer circle clamping grinding and polishing device (5) and an inner circle tensioning grinding and polishing device (6);
the first auxiliary driving device (2) and the second auxiliary driving device (3) are fixed on one side of the frame (1), the first auxiliary driving device (2) is connected with the outer circle clamping polishing device (5) through a screw rod, and the second auxiliary driving device (3) is connected with the inner circle tensioning polishing device (6) through the screw rod;
The main driving device (4) is located at one end of the frame (1) and used for clamping and driving the seamless metal composite tube to rotate, the outer circle clamping polishing device (5) is located on the right side of the main driving device (4), the main driving device (4) clamps the seamless metal composite tube, simultaneously supports the outer side of the seamless metal composite tube and polishes or polishes the outer surface of the seamless metal composite tube, and the inner circle tensioning polishing device (6) is located on the right side of the outer circle clamping polishing device (5) and used for polishing or polishing the inner surface of the seamless metal composite tube.
2. The apparatus for synchronously treating the inner and outer surfaces of a seamless metal composite pipe according to claim 1, wherein: the excircle centre gripping grinds throwing device (5) including a slide carriage (501), slide carriage (501) have two, all are connected with auxiliary drive device (2) through the lead screw be provided with on slide carriage (501) and move frame (502), be provided with crossbeam (503) between moving frame (502) install anchor clamps (504) that two front and back symmetry set up on crossbeam (503), anchor clamps (504) are used for pressing from both sides tight seamless metal composite tube, realize simultaneously grinding or polishing to seamless metal composite tube surface, install protective housing (505) jointly on two slide carriage (501) for cover moving frame (502), anchor clamps (504) and crossbeam (503), reduce the loss of throwing the in-process piece.
3. The apparatus for synchronously treating the inner and outer surfaces of a seamless metal composite pipe according to claim 2, wherein: the clamp (504) comprises a connecting plate (5041), a first linear motor (5042) is arranged on the connecting plate (5041), a first pressure sensor is arranged at the output end of the first linear motor (5042), a pushing block (5043) is connected to the first pressure sensor, two pulling plates (5044) are symmetrically hinged to the left end and the right end of the pushing block (5043), two holding arms (5045) are symmetrically hinged to the left side and the right side of the connecting plate (5041), the other end of the pulling plate (5044) is hinged to the elbow of the corresponding holding arm (5045), a second polishing plate (5046) is arranged at the lower end of the pushing block (5043), a first polishing plate (5047) is hinged to the lower portion of the holding arm (5045), a second pressure sensor is further arranged at the movable end of the holding device (5048), and the second pressure sensor is hinged to the first polishing plate (5047) and used for driving the first polishing plate (5047) to rotate in a seamless mode.
4. A seamless metal composite tube inner and outer surface synchronous processing apparatus according to claim 3, wherein: the inner circle tensioning grinding and polishing device (6) comprises a second slide carriage (601), the second slide carriage (601) is connected with a second auxiliary driving device (3) through a screw rod, a box body (602) is installed on the second slide carriage (601), a hollow pipe (603) is fixedly installed on the box body (602), and a grinding and polishing head (604) is connected to the end portion of the hollow pipe (603) through a flange.
5. The apparatus for synchronously treating the inner and outer surfaces of a seamless metal composite pipe according to claim 4, wherein: the polishing head (604) comprises a mandrel (6041), the mandrel (6041) is connected with a hollow tube (603) through a flange, a triangular base (6042) is fixedly installed on the mandrel (6041), a second linear motor (6043) is fixedly installed on three corners of the triangular base (6042), a third pressure sensor is installed at the tail end of an output shaft of the second linear motor (6043), a third polishing plate (6044) is installed on the third pressure sensor, and the second linear motor (6043) adjusts according to the stress condition of the third polishing plate (6044) received by the third pressure sensor in real time, so that the constant stress of the third polishing plate (6044) in the whole polishing process is ensured.
6. The apparatus for synchronously treating the inner and outer surfaces of a seamless metal composite pipe according to claim 5, wherein: the device is characterized by further comprising a dust recovery device (7), wherein the dust recovery device (7) is positioned on the second slide carriage (601) and is used for recovering dust generated in the grinding and polishing processes of the outer circle clamping grinding and polishing device (5) and the inner circle tensioning grinding and polishing device (6).
7. The apparatus for synchronously treating the inner and outer surfaces of a seamless metal composite pipe according to claim 6, wherein: dust recovery unit (7) are including negative pressure fan (701), hose (702) and No. two hose (703)'s one end all are connected with the air intake of negative pressure fan (701), no. two hose (703) are connected with hollow tube (603) near the one end of box (602) for collect the piece that seamless metal composite tube inner wall grinds the in-process produced hollow tube (603) are close to one side of grinding and polishing head (604) and have evenly been seted up a plurality of collecting holes (605), hose (702) are connected with protective housing (505) for collect the piece that seamless metal composite tube outer wall grinds the in-process produced.
8. A seamless metal composite pipe inner and outer surface synchronous treatment method based on the seamless metal composite pipe inner and outer surface synchronous treatment equipment as claimed in claim 7, which is characterized in that: the method comprises the following steps:
S1, outer wall positioning and clamping: the first auxiliary driving device (2) drives the outer circle clamping polishing device (5) to axially move to one end of the seamless metal composite tube far away from the main driving device (4), the first linear motor (5042) drives the pushing block (5043) to move, meanwhile drives the two holding arms (5045) to carry out holding motion, the second polishing plate (5046) is directly attached to the outer wall of the seamless metal composite tube, the first polishing plate (5047) is attached to the outer wall of the seamless metal composite tube under the action of the fixing device (5048), the clamping of the outer circle clamping polishing device (5) to the seamless metal composite tube is achieved, the first auxiliary driving device (2) drives the outer circle clamping polishing device (5) to axially move until the other end of the clamped seamless metal composite tube is contacted with a three-jaw chuck on the main driving device (4), and then the clamping of the seamless metal composite tube is completed by the three-jaw chuck;
S2, inner wall tensioning clamping: the second auxiliary driving device (3) drives the inner circle tensioning polishing device (6) to axially move, so that the polishing head (604) is just positioned at the inlet of the inner wall of the seamless metal composite pipe, at the moment, three second linear motors (6043) which are circumferentially arranged are controlled to drive a third polishing plate (6044) to extend out, the inner wall of the seamless metal composite pipe is tensioned, the same pretightening force is set in three circumferential directions according to the processing requirement of the seamless metal composite pipe, and a third pressure sensor senses the stress condition of the third polishing plate (6044) in real time in the tensioning process until the tensioning work is completed after the pressure exerted by the three third polishing plates (6044) completely reaches the set pretightening force, so that the tensioning clamping of the inner wall of the seamless metal composite pipe is realized;
S3, internal and external synchronization processing: the main driving device (4) drives the seamless metal composite pipe to rotate, the second auxiliary driving device (3) drives the inner circle tensioning polishing device (6) to move at a uniform speed along the axial direction, and the first auxiliary driving device (2) drives the outer circle clamping polishing device (5) to move at a uniform speed along the axial direction, so that synchronous polishing treatment on the inner surface and the outer surface of the seamless metal composite pipe is realized;
S4, stable and uniform polishing: a first linear motor (5042) and a tightening device (5048) in the outer circle clamping polishing device (5) always keep working states, the pressures between a second polishing plate (5046) and a first polishing plate (5047) and the outer wall of the seamless metal composite pipe are kept uniform in the polishing process according to data of the first pressure sensor and the second pressure sensor, an inner circle tensioning polishing device (6) dynamically monitors the pressure between the third polishing plate (6044) and the inner wall of the seamless metal composite pipe on line through a third pressure sensor, the second linear motor (6043) is adjusted according to pressure signals received by the third pressure sensor in real time, constant stress of the third polishing plate (6044) in the whole polishing process is guaranteed, and meanwhile, a dust recycling device (7) keeps working in the whole polishing process and collects dust generated in the treatment process of the seamless metal composite pipe.
9. The method for synchronously treating the inner surface and the outer surface of the seamless metal composite pipe according to claim 8, which is characterized in that: the outer circle clamping polishing device (5) and the inner circle tensioning polishing device (6) are kept to move synchronously in the axial direction, so that the synchronous treatment of the inner surface and the outer surface of the seamless metal composite pipe is ensured.
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