CN113001006B - Laser-assisted friction stir material increase welding tool and device - Google Patents
Laser-assisted friction stir material increase welding tool and device Download PDFInfo
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- CN113001006B CN113001006B CN202110184576.8A CN202110184576A CN113001006B CN 113001006 B CN113001006 B CN 113001006B CN 202110184576 A CN202110184576 A CN 202110184576A CN 113001006 B CN113001006 B CN 113001006B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/1215—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding for other purposes than joining, e.g. built-up welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention relates to the technical field of friction stir welding, in particular to a laser-assisted friction stir material additive welding tool, wherein a laser head and a press switch are arranged in a shell of the laser-assisted friction stir material additive welding tool, and the press switch is electrically connected with the laser head; laser channels are arranged on the side wall of the cutter handle at intervals, and the side wall of the cutter handle between two adjacent laser channels is of a frame structure; during rotation, a part of the frame structure is suitable for abutting against the push switch, so that the laser head is closed; when the frame structure breaks away from during the press switch, laser head transmission laser to see through the laser passageway is right the material increase of handle of a knife inside carries out the boosting, and this device adopts full mechanical structure, can realize the accurate heating material of laser instrument, realizes the material rapid heating, and then can reach high-speed friction stir vibration material increase manufacturing to avoid electric machine system to lose the step and cause the defect that the mistake heats the handle of a knife, and reduce control system control logic, reduce system redundancy.
Description
Technical Field
The invention relates to the technical field of friction stir welding, in particular to a laser-assisted friction stir material additive welding tool and device.
Background
As a novel solid-phase additive technology, the stirring friction additive manufacturing has the advantages of low forming temperature, good performance of forming materials and the like. However, in the additive process, an extremely large rotating speed and pressure are required to plasticize the material by sufficient heat. This will place great demands on the performance of the device. During the friction stir additive manufacturing process, the material requires a large amount of temperature to plasticize. However, the pure friction heat generation causes insufficient material plasticization, so that auxiliary heating additive manufacturing is required. Laser light is a good heat source to rapidly heat materials to a desired temperature. However, since laser is a contact type heating, the shank cannot be isolated for heating, and therefore, a hole needs to be formed as a laser channel.
In addition, in order to avoid the reduction of the service life of the tool shank caused by the laser heating of the tool shank after the hole is formed, the tool shank at the position where the hole is not formed needs to be protected. In the prior art, the laser can be controlled to be switched on and switched off by adopting an independent program to realize intermittent heating, the control precision of the method is insufficient, and particularly when the laser rotates at a high speed, the problem that the motor loses steps and the like can cause the laser to heat the tool shank by mistake, so that the tool shank is damaged.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the heating of the tool shank cannot be well protected in the laser auxiliary heating process in the prior art, so that the laser auxiliary stirring friction material increase welding tool and the device are provided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the invention provides a laser-assisted friction stir material additive welding tool which is characterized by comprising,
the side wall of the knife handle is provided with laser channels at intervals, and the side wall of the knife handle between two adjacent laser channels is of a frame structure;
the shell is provided with a cavity suitable for penetrating the tool handle; the knife handle is arranged in the shell in a clearance fit mode with the shell; the laser head and the press switch are arranged in the shell, and the press switch is electrically connected with the laser head;
the tool handle is suitable for rotating relative to the shell, and during the rotation process, one part of the frame body structure is suitable for abutting against the press switch so as to close the laser head; when the frame structure is separated from the press switch, the laser head emits laser, so that the additive in the knife handle is heated in an auxiliary manner through the laser channel.
In the laser-assisted friction stir welding tool, the laser head is arranged on the shell corresponding to the outer side of the laser channel.
In the laser-assisted friction stir welding tool, the laser heads are provided with a plurality of laser heads which are respectively arranged around the inner cavity of the shell; the press switches are arranged in one-to-one correspondence with the laser heads.
In the laser-assisted friction stir welding tool, each laser head and the corresponding push switch are located on the same bus.
Among the friction stir welding material increase soldering set is assisted to above-mentioned laser, press switch includes, the convex head cap and the spring that is located convex head cap bottom, convex head cap and spring assembly are in shells inner wall's the recess, the afterbody of convex head cap has the baffle, receives the outside biasing force of spring, the convex head cap drives the outside butt of baffle to electrode, so that laser head circular telegram transmission laser.
In the laser-assisted friction stir welding tool, the convex head cap is arranged in the groove in a protruding mode towards the outside.
In the laser-assisted friction stir welding tool, a boss is arranged at a position corresponding to the raised head cap on the frame structure, and the boss is suitable for abutting and pressing the raised head cap to close the laser head.
Among the above-mentioned friction stir welding material increase soldering set is assisted to laser, still include main shaft and stirring head, wherein, the main shaft sets up in the cavity of casing, main shaft, handle of a knife and stirring head fixed connection in proper order, the material increase passageway that has mutual intercommunication in main shaft, handle of a knife and the stirring head.
The invention also provides a laser-assisted friction stir additive welding device, which adopts the laser-assisted friction stir additive welding tool and also comprises a base, wherein the base is connected with the shell; the side wall of the shell is provided with a transmission hole, a base outside the shell is provided with a motor, and a driving belt of the motor is in transmission connection with a main shaft of the welding tool through the transmission hole.
In the laser-assisted friction stir additive welding device, the device further comprises an additive conveying structure which comprises,
the material feeding device comprises a guide bracket, a feeding mechanism and a feeding mechanism, wherein the guide bracket comprises an upper plate and a linear driving structure fixed on the upper plate, at least one first guide rail is arranged between the upper plate and a base, and the linear driving structure is suitable for driving a bar material to be added to move along the first guide rail;
the lower bottom plate is arranged between the upper plate and the base and is in sliding fit with the first guide rail;
the upper supporting plate is arranged between the lower bottom plate and the upper plate, and the upper end and the lower end of the upper supporting plate are respectively and fixedly connected with the movable end of the linear driving structure and a bar to be reinforced; the upper supporting plate is provided with at least one second guide rail which is positioned at the inner side of the first guide rail; and the upper supporting plate is respectively in sliding fit with the first guide rail and the second guide rail.
The technical scheme of the invention has the following advantages:
the laser-assisted friction stir welding tool provided by the invention has the advantages that the laser head and the press switch are arranged in the shell of the laser-assisted friction stir welding tool, and the press switch is electrically connected with the laser head; laser channels are arranged on the side wall of the cutter handle at intervals, and the side wall of the cutter handle between two adjacent laser channels is of a frame structure; during rotation, a part of the frame structure is suitable for abutting against the push switch, so that the laser head is closed; when the frame structure breaks away from during push switch, laser head transmission laser to see through the laser passageway is right the material increase of handle of a knife inside carries out the boosting, and this laser is assisted friction stir material increase welding set, through mechanical switch's break-make, can emit laser when the laser head passes through the laser passageway, heats the material increase material in the handle of a knife, when the laser head leaves the laser passageway, closes laser, avoids the laser heating handle of a knife, and this device adopts full mechanical structure, can realize the accurate heating material of laser instrument, realizes the rapid heating of material, and then can reach high-speed friction stir material increase and make to avoid electric machine system to lose the step and cause the defect of mistake heating handle of a knife, and reduce control system control logic, reduce system redundancy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a laser-assisted friction stir additive device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the laser-assisted friction stir welding tool housing and tool shank cooperation provided by an embodiment of the invention;
fig. 3 is a schematic structural diagram of a press switch of a laser-assisted friction stir welding tool according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a tool shank provided in an embodiment of the present invention.
Description of reference numerals:
1-a linear drive structure; 2-a first guide rail; 3-an upper support plate; 4, a motor; 5, a main shaft; 6-a belt; 7-a knife handle; 8-a stirring head; 9-a bearing; 10-a lower bottom plate; 11-a second guide rail; 12-a laser head; 13-a nose cap; 14-a boss; 15-a spring; 16-a baffle plate; 17-an electrode; 18-laser channel; 19-upper plate; 20-aluminum bar; 21-a base; 22-a housing; 23-frame structure.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1-4, the present embodiment provides a laser-assisted friction stir welding tool, including,
the side wall of the knife handle 7 is provided with laser channels 18 at intervals, and the side wall of the knife handle 7 between two adjacent laser channels 8 is a frame structure 23;
a housing 22 having a cavity adapted to receive the tool shank 7 therethrough; the tool shank 7 is arranged in the shell 22 in a clearance fit manner with the shell; the shell 22 is internally provided with a laser head 12 and a push switch which is electrically connected with the laser head 12; the tool shank 7 is suitable for rotating relative to the housing 22 under the driving of the main shaft 5, and in the rotating process, a part of the frame structure 23 is suitable for abutting against the push switch, so that the laser head 12 is closed; when the frame structure 23 is disengaged from the push switch, the laser head 12 emits laser, so that the additive inside the handle 7 is heated in an auxiliary manner through the laser channel, and preferably, the additive inside the handle is an aluminum rod.
The laser auxiliary friction stir welding tool provided by the embodiment has the advantages that the laser head and the press switch are arranged in the shell of the laser auxiliary friction stir welding tool, and the press switch is electrically connected with the laser head; laser channels are arranged on the side wall of the cutter handle at intervals, and the side wall of the cutter handle between two adjacent laser channels is of a frame structure; in the rotating process, one part of the frame body structure rotates to the position of a press switch, so that the frame body structure is abutted against the press switch to close the laser head; when the frame structure rotates and breaks away from during the press switch, laser head transmission laser to see through the laser passageway is right the vibration material disk of handle of a knife inside carries out the boosting, and this laser is supplementary friction stir vibration material disk welding utensil through mechanical switch's break-make, can launch laser when the laser head passes through the laser passageway, heats the vibration material disk in the handle of a knife, when the laser head leaves the laser passageway, closes the laser, avoids laser heating handle of a knife, and this device adopts full mechanical structure, can realize the accurate heating material of laser instrument, realizes the material rapid heating, and then can reach high-speed friction stir vibration material disk, and avoid electric machine system to lose the step and cause the defect of mistake heating handle of a knife to and reduce control system control logic, reduce system redundancy.
Optionally, in the laser-assisted friction stir welding tool, the laser head 12 is disposed on the corresponding housing 22 outside the laser channel 18.
Further optionally, in the laser-assisted friction stir welding tool, the laser heads 12 are provided in a plurality and respectively surround the inner cavity of the shell 22; preferably, the press switches and the laser heads are arranged in a one-to-one correspondence manner, so that each press switch controls the opening and closing of the corresponding laser head, and the fault tolerance of the device is improved.
In the laser-assisted friction stir welding tool, each laser head 12 and the corresponding push switch are located on the same bus, and specifically, a connecting line between each laser head 12 and the corresponding switch is located on a vertical section passing through the axis of the shell 22. The arrangement mode can ensure that the opening and closing of the laser head 12 just correspond to the frame structure 23, namely, when the frame structure 23 is pressed to the push switch, the laser head 12 is just opposite to the position of the frame structure 23, and the laser head is in a closed state at the moment; when frame structure 23 breaks away from push switch, laser head 12 just is to laser channel position, and the laser head is in operating condition this moment, carries out the auxiliary heating to the aluminium bar in the handle of a knife, and circulation in proper order can realize the accurate heating material of laser instrument.
Optionally, in the laser-assisted friction stir welding tool, the push switch includes a protruding head cap 13 and a spring 15 located at the bottom of the protruding head cap 13, the protruding head cap 13 and the spring 15 are assembled in a groove on the inner wall of the housing 22, a baffle 16 is located at the tail of the protruding head cap 13, and under the outward bias of the spring 15, the protruding head cap 13 drives the baffle 16 to abut outwards against the electrode 17, so that the laser head 12 is powered on to emit laser, specifically, the laser head 12 is connected with the electrode 17, and the baffle 16 is in contact with both sides of the electrode 17 under the bias of the spring 15, so that the electrode and the laser head are powered on to emit laser; when the raised head cap 13 is pressed down by force, the baffle 13 is driven to be separated downwards, so that the electrode 17 is disconnected to close the laser head. In addition, the nose cap 13 is provided to project outwardly within the recess under the biasing force of the spring 15.
In a preferred embodiment, in the laser-assisted friction stir welding tool, a boss 14 is provided at a position corresponding to the head cap 13 on the frame structure 23, and the boss 14 is adapted to abut against and press the head cap 13 to close the laser head. In addition, as an alternative embodiment, the frame structure may not be provided with a boss, and the frame structure can be pressed against the boss cap to press the push switch only by the structure of the frame structure.
Optionally, in the laser-assisted friction stir welding tool, a main shaft 5 and a stirring head 8 are further included, wherein the main shaft 5 is disposed in a cavity of the housing 22, the main shaft 5, the tool shank 7 and the stirring head 8 are sequentially and fixedly connected, material increase channels communicated with each other are provided in the main shaft 5, the tool shank 7 and the stirring head 8, and the aluminum bar 20 is suitable for being added in the material increase channels. The main shaft 5 may be fitted in the cavity of the housing 22 through at least one bearing 9, as shown in fig. 1, the two bearings 9 are respectively fitted near upper and lower ends of the main shaft.
Example 2
As shown in fig. 1, this embodiment further provides a laser-assisted friction stir additive welding device, which employs the laser-assisted friction stir additive welding tool described in embodiment 1, and further includes a base 21, where the base 21 is connected to the housing 22; the lateral wall of the shell 22 is provided with a transmission hole, a motor 4 is arranged on a base outside the shell, a driving belt of the motor 4 is in transmission connection with a main shaft 4 of the welding tool through the transmission hole, specifically, the driving belt can be selected to be a belt 6, and the motor 4 drives a main shaft 5 to rotate through the belt 6 so as to provide power for friction stir welding.
Optionally, in the laser-assisted friction stir additive welding device, the laser-assisted friction stir additive welding device further includes an additive conveying structure, which includes a guide bracket, where the guide bracket includes an upper plate 19 and a linear driving structure 1 fixed on the upper plate 19, where the linear driving structure 1 may be a driving structure such as an air cylinder or an electric cylinder, and at least one first guide rail 2 is disposed between the upper plate 19 and a base 21, as shown in fig. 1, where the first guide rail 2 has two, and the linear driving structure 1 is adapted to drive a rod to be additively fed, that is, an aluminum rod 20, to move along the first guide rail 2, so as to achieve additive feeding.
Optionally, in the laser-assisted friction stir welding device, the laser-assisted friction stir welding device further includes a lower base plate 10, where the lower base plate 10 is disposed between the upper plate 19 and the base 21, and the lower base plate 10 is in sliding fit with the first guide rail 2; the upper supporting plate 3 is arranged between the lower bottom plate 10 and the upper plate 19, and the upper end and the lower end of the upper supporting plate 3 are respectively fixedly connected with the movable end of the linear driving structure 1 and the aluminum rod 20; go up to be equipped with at least one second guide rail 11 on backup pad 3, as shown in fig. 1, second guide rail 11 is equipped with two, and it is as supplementary guide rail, is located the inboard of first guide rail, go up the backup pad respectively with first guide rail and second guide rail sliding fit. In the additive manufacturing process of the aluminum bar 20 driven to be pressed downwards, the lower base plate 10 can move downwards along with the aluminum bar 20, after the lower edge of the lower base plate 10 is abutted to the upper edge of the base 21, the lower base plate 10 reaches the end position and stops moving downwards along with the aluminum bar, and after the lower base plate 10 moves to the end position, the upper support plate 3 can drive the aluminum bar to continue moving downwards, at the moment, the pressing-down process can be realized, so that the aluminum bar is discharged from the working end of the stirring head, and the material utilization rate in the whole additive manufacturing process is improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. A laser-assisted friction stir material additive welding tool is characterized by comprising,
the side wall of the knife handle is provided with laser channels at intervals, and the side wall of the knife handle between two adjacent laser channels is of a frame structure;
the shell is provided with a cavity suitable for penetrating the tool handle; the knife handle is arranged in the shell in a clearance fit mode with the shell; the laser head and the press switch are arranged in the shell, and the press switch is electrically connected with the laser head;
the tool handle is suitable for rotating relative to the shell, and during the rotation process, one part of the frame body structure is suitable for abutting against the press switch so as to close the laser head; when the frame structure is separated from the press switch, the laser head emits laser, so that the additive in the tool handle is heated in an auxiliary manner through the laser channel;
the pressing switch comprises a convex head cap and a spring positioned at the bottom of the convex head cap, the convex head cap and the spring are assembled in a groove in the inner wall of the shell, a baffle is arranged at the tail part of the convex head cap, and the convex head cap drives the baffle to be outwards abutted to the electrode under the outward biasing force of the spring so that the laser head is electrified to emit laser; the frame structure with the position department that the protruding head cap corresponds is equipped with the boss, the boss is suitable for the butt to press the protruding head cap is in order to close the laser head.
2. The laser-assisted friction stir welding tool of claim 1 wherein the laser head is disposed on the housing outside the laser channel.
3. The laser-assisted friction stir welding tool according to claim 1 or 2, wherein the laser head is provided with a plurality of laser heads which are respectively arranged around the inner cavity of the shell; the press switches are arranged in one-to-one correspondence with the laser heads.
4. The laser-assisted friction stir welding tool of claim 3, wherein each laser head and the corresponding push switch are located on the same bus.
5. The laser assisted friction stir additive welding tool of claim 1 wherein said lug cap is outwardly convexly disposed within said recess.
6. The laser-assisted friction stir welding tool according to claim 1, further comprising a spindle and a stirring head, wherein the spindle is disposed in the cavity of the housing, the spindle, the tool shank and the stirring head are sequentially and fixedly connected, and additive channels communicated with each other are disposed in the spindle, the tool shank and the stirring head.
7. A laser assisted friction stir additive welding device comprising the laser assisted friction stir additive welding tool of claim 6, further comprising a base connected to the housing; the side wall of the shell is provided with a transmission hole, a base outside the shell is provided with a motor, and a driving belt of the motor is in transmission connection with a main shaft of the welding tool through the transmission hole.
8. The laser assisted friction stir welding apparatus of claim 7, further comprising an additive transport structure comprising,
the material feeding device comprises a guide bracket, a feeding mechanism and a feeding mechanism, wherein the guide bracket comprises an upper plate and a linear driving structure fixed on the upper plate, at least one first guide rail is arranged between the upper plate and a base, and the linear driving structure is suitable for driving a bar material to be subjected to material increase to move along the first guide rail;
the lower bottom plate is arranged between the upper plate and the base and is in sliding fit with the first guide rail;
the upper supporting plate is arranged between the lower bottom plate and the upper plate, and the upper end and the lower end of the upper supporting plate are respectively and fixedly connected with the movable end of the linear driving structure and a bar to be reinforced; the upper supporting plate is provided with at least one second guide rail which is positioned at the inner side of the first guide rail; and the upper supporting plate is respectively in sliding fit with the first guide rail and the second guide rail.
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| CN114183477B (en) * | 2021-12-13 | 2024-01-19 | 哈尔滨工业大学（威海） | Clutch applied to friction additive manufacturing device |
| CN114178555B (en) * | 2021-12-13 | 2023-11-28 | 山东格物智能科技有限公司 | Main shaft structure applied to friction additive manufacturing device |
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