CN110670065B - Simple sealing device of material-increasing and material-reducing combined machining center for manufacturing impeller blades - Google Patents
Simple sealing device of material-increasing and material-reducing combined machining center for manufacturing impeller blades Download PDFInfo
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- CN110670065B CN110670065B CN201910952163.2A CN201910952163A CN110670065B CN 110670065 B CN110670065 B CN 110670065B CN 201910952163 A CN201910952163 A CN 201910952163A CN 110670065 B CN110670065 B CN 110670065B
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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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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- 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
- B33Y80/00—Products made by additive manufacturing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
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- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
Abstract
The utility model provides a simple and easy sealing device of increase and decrease material combined machining center towards impeller blade manufacturing, belongs to machine-building technical field. Towards simple and easy sealing device of increase and decrease material combined machining center that impeller blade was made, including seal chamber, heat-resisting seal cover and clamping mechanism, the hollow extending structure that heat-resisting seal cover was made for flexible material, and its top center is provided with the through-hole, and the seal chamber is open-topped cylinder structure, its and heat-resisting seal cover sealing connection, and clamping mechanism is including connecting gradually base, chuck and base plate, and the chuck includes chuck seat and chuck jaw, and the chuck seat is provided with suction nozzle and gas outlet, the chuck jaw is provided with arc portion for press from both sides tight base plate. The simple sealing device for the material-increasing and material-decreasing composite machining center for manufacturing the impeller blades is used for a five-axis linkage material-increasing and material-decreasing composite machining center, so that the simple sealing device can be used for machining easily-oxidized metal in a protective gas environment, the equipment modification cost is reduced, and the equipment application range is widened.
Description
Technical Field
The invention relates to the technical field of machine manufacturing, in particular to a simple sealing device of an additive and subtractive composite machining center for manufacturing impeller blades.
Background
The metal additive manufacturing generally uses high-energy laser beams as a processing heat source to form a molten pool on the surface of a substrate, and is matched with a coaxial powder feeding technology to feed powder or other forms of materials to be clad into the molten pool, and the materials to be clad are instantly melted and accumulated on the surface of the substrate.
However, in terms of geometric dimension precision and surface smoothness of products, the effect of the metal additive manufacturing process is not ideal, while the traditional numerical control machine tool belongs to material reduction machining, and has the advantages of high precision, easiness in cutting machining and the like, so that the advantages and the disadvantages of the material reduction manufacturing and the additive manufacturing have strong complementary relation. Numerical control machining and additive manufacturing are organically integrated to realize the composition of the material increasing and decreasing manufacturing process, so that the production efficiency can be improved, the production cost can be reduced, the machining range of raw materials of products can be widened, the use of cutting fluid in the production process can be reduced, and the environment can be protected. For special geometries or special material parts that cannot be achieved by conventional cutting operations, the near-net-shape stage can be undertaken by additive manufacturing, while the later finishing and surface treatments are undertaken by conventional subtractive machining. Because all processing procedures are finished on the same machine tool, the error accumulation caused by clamping and picking and placing of workpieces during multi-platform processing originally is avoided, the manufacturing precision and the production efficiency are improved, the workshop space is saved, the manufacturing cost is reduced, and the method has a wide application prospect.
Titanium alloy is an important structural metal, and is widely used for manufacturing impeller blades due to the advantages of high strength, good heat strength, good low-temperature performance, small heat conduction elasticity and the like. However, when the composite processing of increasing and decreasing materials is performed on the difficult-to-process metal, such as titanium alloy, if the composite processing is directly performed in the air, the titanium alloy which is heated up violently due to laser can absorb oxygen, nitrogen and hydrogen, and phenomena such as oxidation, hydrogen embrittlement and the like are generated, so that the finished product cannot meet the performance of use requirements or even cannot be used; the main solution to this problem is to use a completely enclosed plant, filled with inert gas for the additive and subtractive composite process, which is generally expensive to purchase and maintain.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a simple sealing device for an additive and subtractive composite machining center for manufacturing impeller blades, which is used for a five-axis linkage additive and subtractive composite machining center, so that the simple sealing device can be used for machining easily-oxidized metal in a protective gas environment, the equipment modification cost is reduced, and the equipment application range is widened.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a simple sealing device for an additive and subtractive composite machining center for manufacturing impeller blades is mounted in a five-axis linkage additive and subtractive composite machining center and comprises a sealing chamber, a heat-resistant sealing sleeve arranged at the top of the sealing chamber and a clamping mechanism arranged in the sealing chamber;
the heat-resistant sealing sleeve is of a hollow telescopic structure made of flexible materials, and a through hole is formed in the center of the top of the heat-resistant sealing sleeve and is used for being connected with a laser head or a machining cutter;
the sealing chamber is of a cylindrical structure with an opening at the top and is in sealing connection with the heat-resistant sealing sleeve;
clamping machine constructs including connecting gradually base, chuck and base plate, the chuck includes chuck seat and chuck jaw, the chuck seat is provided with suction nozzle and gas outlet, makes inert protective gas flow blow in and discharge from the gas outlet from the suction nozzle, the chuck jaw is provided with arc portion for press from both sides tight base plate.
Furthermore, an air inlet valve, a one-way exhaust valve, a micro-lubricating nozzle and an oxygen content detector are arranged outside the sealing chamber, the air inlet valve is connected with an air bottle, and the air inlet valve is connected with the air inlet nozzle through a hose; the micro-lubricating nozzle is connected with the micro-lubricating system and is used for lubricating when the impeller blade is machined by reducing materials; the oxygen content detector is used for detecting the oxygen content in the sealed chamber.
Furthermore, the through hole of the heat-resisting sealing sleeve is sealed with the laser head or the processing cutter inserted into the through hole by a sealing ring, and the sealing ring is a graphite sealing ring and is used for ensuring the sealing connection between the laser head or the processing cutter and the heat-resisting sealing sleeve.
Further, the base is connected with the chuck base through correspondingly arranged convex grooves and grooves, and three sliding grooves are uniformly formed in the upper portion of the chuck base along the circumferential direction and are used for being connected with the chuck claws.
Further, a polyimide film is pasted on the surface of the heat-resistant sealing sleeve.
Furthermore, the sealing chamber is made of dark transparent materials and is used for filtering laser light in the cladding process.
Further, the air inlet nozzle is communicated with the middle of the chuck seat, and the air outlet is located in the middle of the chuck seat and located below the arc-shaped portion of the chuck jaw.
The invention has the beneficial effects that:
1) the invention has simple and portable structure, no complex electric control equipment, no limitation of site factors in use, simple and convenient operation mode and extremely low maintenance cost;
2) the invention does not need to coat the whole material-increasing and material-decreasing composite processing center, can process only by coating the laser head or the processing cutter, and the device can be directly fastened on the working table surface of the processing center through bolts, thus meeting the equipment requirement of easy processing of the impeller blade;
3) according to the invention, the oxygen content detector and the slightly-cooling lubricating system are added, the oxygen content detector can observe the oxygen content in the sealing device in real time, so that processing failure caused by oxygen content change in the processing process is avoided, and the lubricating oil consumption can be reduced, so that the requirement of green manufacturing is met;
4) heat-resistant and environment-friendly materials are mostly adopted, so that the cladding process is not damaged, and substances harmful to human bodies are not generated due to high temperature;
5) the clamping structure has strong rigidity, and can meet the rigidity requirement in the material increasing and decreasing process, particularly the material decreasing process;
6) the existing material-increasing and material-reducing combined machining center can be upgraded and modified, the cost is greatly saved, and the machining quality and the machining efficiency are improved.
Additional features and advantages of the invention will be set forth in part in the detailed description which follows.
Drawings
Fig. 1 is a schematic structural diagram of a simple sealing device facing an additive and subtractive composite machining center for manufacturing impeller blades according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a simple sealing device facing an additive and subtractive composite machining center for manufacturing impeller blades according to an embodiment of the present invention;
FIG. 3 is a schematic view of a heat resistant sealing boot and seal chamber connection provided by an embodiment of the present invention;
FIG. 4 is a front view of a heat resistant seal cartridge and seal chamber connection provided by an embodiment of the present invention;
FIG. 5 is a top view of a heat resistant seal cartridge and seal chamber connection provided by an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a clamping mechanism according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a chuck jaw provided in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a chuck according to an embodiment of the present invention.
Reference numerals in the drawings of the specification include:
1-cladding head, 2-sealing ring, 3-heat-resistant sealing sleeve, 4-sealing chamber, 5-micro-lubricating nozzle, 6-substrate, 7-arc part, 8-oxygen content detector, 9-base, 10-air inlet nozzle, 11-air outlet, 12-air inlet valve, 13-one-way exhaust valve, 14-chuck jaw, 15-cylindrical pin and 16-chuck seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In order to solve the problems in the prior art, as shown in fig. 1 to 8, an embodiment of the present invention provides a simple sealing device for an incremental/decremental composite machining center for manufacturing an impeller blade, which is installed in a five-axis linkage incremental/decremental composite machining center, and includes a sealing chamber 4, a heat-resistant sealing sleeve 3 disposed on the top of the sealing chamber 4, and a clamping mechanism disposed inside the sealing chamber 4.
As shown in fig. 1 to 5, the heat-resistant sealing sleeve 3 is a hollow telescopic structure made of flexible material, a through hole is arranged in the center of the top of the heat-resistant sealing sleeve for connecting with a laser head or a processing tool, and a polyimide film is adhered to the surface of the heat-resistant sealing sleeve 3. The through hole of the heat-resistant sealing sleeve 3 is sealed with the laser head or the processing cutter inserted into the through hole through the sealing ring 2, the sealing ring 2 is a graphite sealing ring and is used for ensuring the sealing connection between the laser head or the processing cutter and the heat-resistant sealing sleeve 3, the graphite sealing ring is high-temperature resistant and good in air tightness, and the connection effect between the cladding head 1 and the heat-resistant sealing sleeve 3 is ensured. In the embodiment, the laser head adopts the cladding head 1, the heat-resistant sealing sleeve 3 adopts a flexible material, such as a rubber material, the inner surface and the outer surface of the heat-resistant sealing sleeve are both pasted with polyimide films, the laser head can bear the high temperature of more than 400 ℃, the fuming rate is small and non-toxic, and the laser head is high-temperature resistant and generates no harmful substances on the premise of tight connection with the cladding head 1 and the sealing chamber 4; the heat-resisting sealing sleeve 3 is of a hollow structure and a telescopic structure, and can ensure that the heat-resisting sealing sleeve 3 can stretch and deform radially, so that the machining movement of the cladding head 1 or the milling cutter is not influenced by increasing equipment, namely, the normal working displacement is not influenced, and the material increase and decrease machining can be smoothly carried out.
As shown in fig. 1 to 4, the sealing chamber 4 is a cylindrical structure with an open top, and is hermetically connected to the heat-resistant sealing sleeve 3, and the sealing chamber 4 is made of a dark transparent material and is used for filtering laser light in a cladding process. In the embodiment, the sealing chamber 4 is made of dark transparent materials, such as gray or dark green acrylic plates, dark glass plates and the like, when the sealing chamber 4 is used, the internal pressure is 1-1.5 atm, the sealing chamber is tightly glued with the heat-resistant sealing sleeve 3 without air leakage, and a cylindrical structure is adopted to be suitable for processing the impeller blades.
As shown in fig. 6 to 8, the clamping mechanism comprises a base 9, a chuck and a substrate 6 which are connected in sequence, the chuck comprises a chuck seat 16 and chuck jaws 14, the chuck seat 16 is provided with an air inlet nozzle 10 and an air outlet 11, inert protective air flow is blown in from the air inlet nozzle 10 and discharged from the air outlet 11, the chuck jaws 14 are provided with arc-shaped portions 7 for clamping the substrate 6, the base 9 and the chuck seat 16 are connected through correspondingly arranged convex grooves and grooves, three sliding grooves are uniformly arranged on the upper portion of the chuck seat 16 along the circumferential direction and are used for being connected with the chuck jaws 14, the air inlet nozzle 10 is communicated with the middle of the chuck seat 16, and the air outlet 11 is positioned in the middle of the chuck seat 16 and below the arc-shaped portions 7 of the chuck jaws 14. In this embodiment, the base 9 of the clamping mechanism is connected with the bottom of the sealed chamber 4 through 4M 10 hex bolts, and the sealed chamber 4 can be installed on a T-shaped groove on the working table of the material increase and decrease combined machining center. The base 9 of clamping mechanism is provided with the tongue, the chuck is provided with the recess, tongue and recess cooperation make base 9 and chuck connect through cylindric lock 15 again, chuck jaw 14 through with the chuck seat 16 in the spout cooperation press from both sides base plate 6 tightly, clamping mechanism rigidity is strong, can bear the cutting force that subtracts in the material course of working, can not produce great deformation because of the structural problem, 16 upper portions of chuck seat evenly set up three chuck jaw 14 along circumference, because impeller blade base plate 6 generally adopts circular base plate 6, adopt three chuck jaw 14 to have the centering function, be favorable to improving the precision. The chuck jaws 14 are provided with the arc-shaped portions 7, so that the contact area between the chuck jaws 14 and the substrate 6 is enlarged, the stress state of the substrate 6 can be improved, unnecessary deformation of the substrate 6 due to over concentrated clamping force caused by small base areas of the chuck jaws 14 and the substrate 6 after the substrate 6 is heated is prevented, and the precision of material increase and decrease processing of one machine tool is guaranteed. The gas outlet 11 is aligned with the lower surface of the substrate 6, so that the metal powder beam sprayed out from the cladding head 1 cannot be disturbed, and the forming quality in the laser cladding process is ensured.
As shown in fig. 1 to 5, an air inlet valve 12, a one-way exhaust valve 13, a minimal quantity lubrication nozzle 5 and an oxygen content detector 8 are arranged outside the sealing chamber 4, the air inlet valve 12 is connected with an air bottle, and the air inlet valve 12 is connected with an air inlet nozzle 10 through a hose; the micro-lubricating nozzle 5 is connected with a micro-lubricating system and is used for lubricating when the impeller blade is machined by reducing materials; the oxygen content detector 8 is used for detecting the oxygen content in the sealed chamber 4. In this embodiment, the left side of the sealing chamber 4 is connected with the air inlet valve 12 and the one-way exhaust valve 13, the right side of the sealing chamber 4 is equipped with the micro-lubricating nozzle 5 and the oxygen content detector 8, the assembly position is sealed by the sealing ring, the sealing ring is high-temperature resistant and good in air tightness by the graphite sealing ring, and the sealing effect is ensured. The micro-lubricating nozzle 5 can be externally connected with a micro-lubricating system and used for lubricating when the impeller blades are machined by reducing materials, the green manufacturing idea is met, and the micro-lubricating nozzle 5 and the micro-lubricating system both adopt the prior art. The oxygen content detector 8 is connected with the sealed chamber 4, detects the oxygen content in the sealed chamber, ensures that the oxygen content is kept below the metal oxide oxygen content threshold value in the cladding process, and the oxygen content detector 8 adopts the prior art. An air inlet valve 12 is connected with an air inlet nozzle 10 on the chuck through a hose, when inert protective gas is introduced into an external gas cylinder, the gas enters the lower part of the substrate 6 through the air inlet nozzle 10 and is blown out from an air outlet 11, a protective atmosphere is provided during cladding, and meanwhile, a large amount of heat generated by laser is taken away.
The invention relates to a working process of a simple sealing device of an additive and subtractive composite machining center for manufacturing impeller blades, which comprises the following steps:
preparation work: fixing the sealing chamber 4 and the base 9 on the working table surface of the material-increasing and material-decreasing composite machining center through hexagon bolts, fastening the chuck on the base 9 through a cylindrical pin 15 by utilizing a convex groove and a groove, placing the substrate 6 on the chuck and clamping the substrate through a chuck jaw 14, and after the installation work is finished, aligning the material-increasing and material-decreasing composite machining center;
and (3) additive processing stage: after tool setting is finished, entering an additive processing stage, lowering the laser cladding head 1 to a set working position, after adjustment is finished, wrapping the upper part of the laser cladding head 1 by using a through hole in the center of the top of a heat-resistant sealing sleeve 3, and adjusting and clamping a sealing ring 2;
opening the one-way exhaust valve 13 and the intake valve 12, and adjusting the gas cylinder to ensure that the pressure of gas flow entering the simple sealing device is 1.3 atmospheric pressures (about 142kPa), which are slightly higher than the external air pressure;
opening an oxygen content detector 8, detecting the oxygen content in the device, starting a normal laser cladding processing process after the oxygen content is reduced to be below a response threshold, observing the oxygen content detector 8 in the processing process, stopping processing if the oxygen content is too high, adjusting the pressure of a gas cylinder, increasing the flow rate of gas flow until the oxygen content is reduced to be below the threshold again;
after the laser cladding processing process is finished, closing the oxygen content detector 8, and keeping the air flow until the workpiece is cooled to the room temperature;
and (3) material reducing processing stage: after the material increase processing is finished, entering a material reduction processing stage, replacing the cladding head 1 with a milling cutter, and opening a micro-lubricating system to enable lubricating oil to be sprayed to the workpiece through a micro-lubricating nozzle 5;
turning on an oxygen content detector 8, detecting the oxygen content in the device, and starting to run a milling program when the oxygen content is reduced to be below a response threshold;
and after the machining is finished, closing the air inlet valve 12, closing the micro-lubricating system, opening the sealing ring 2 between the heat-resistant sealing sleeve 3 and the milling cutter, lifting the milling cutter, and taking out the machined workpiece.
Although an embodiment has been given in which the sealed chamber 4 and the heat-resistant sealing sleeve 3 are combined, a person skilled in the art will be able to freely choose the materials and the sealing means according to the actual needs to achieve the same purpose, and such variations or modifications are also included in the scope of protection of the present invention.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (1)
1. A simple sealing device for an additive and subtractive composite machining center for manufacturing impeller blades is mounted in a five-axis linkage additive and subtractive composite machining center and is characterized by comprising a sealing chamber, a heat-resistant sealing sleeve arranged at the top of the sealing chamber and a clamping mechanism arranged in the sealing chamber;
the heat-resistant sealing sleeve is of a hollow telescopic structure made of flexible materials, and a through hole is formed in the center of the top of the heat-resistant sealing sleeve and is used for being connected with a laser head or a machining cutter;
the sealing chamber is of a cylindrical structure with an opening at the top and is in sealing connection with the heat-resistant sealing sleeve;
the clamping mechanism comprises a base, a chuck and a substrate which are sequentially connected, the chuck comprises a chuck seat and a chuck jaw, the chuck seat is provided with an air inlet nozzle and an air outlet, inert protective air flow is blown in from the air inlet nozzle and discharged from the air outlet, and the chuck jaw is provided with an arc part for clamping the substrate; the base and the chuck seat are connected through correspondingly arranged convex grooves and grooves, and three sliding grooves are uniformly formed in the upper portion of the chuck seat along the circumferential direction and are used for being connected with the chuck jaws;
an air inlet valve, a one-way exhaust valve, a micro-lubricating nozzle and an oxygen content detector are arranged outside the sealing chamber, the air inlet valve is connected with an air bottle, and the air inlet valve is connected with the air inlet nozzle through a hose; the micro-lubricating nozzle is connected with the micro-lubricating system and is used for lubricating when the impeller blade is machined by reducing materials; the oxygen content detector is used for detecting the oxygen content in the sealed chamber;
the through hole of the heat-resistant sealing sleeve is sealed with the laser head or the processing cutter inserted into the through hole through a sealing ring, and the sealing ring is a graphite sealing ring and is used for ensuring the sealing connection between the laser head or the processing cutter and the heat-resistant sealing sleeve;
a polyimide film is pasted on the surface of the heat-resistant sealing sleeve;
the sealing chamber is made of a dark transparent material and is used for filtering laser light in the cladding process;
the air inlet nozzle is communicated with the middle of the chuck seat, and the air outlet is located in the middle of the chuck seat and below the arc-shaped part of the chuck jaw.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910952163.2A CN110670065B (en) | 2019-10-09 | 2019-10-09 | Simple sealing device of material-increasing and material-reducing combined machining center for manufacturing impeller blades |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910952163.2A CN110670065B (en) | 2019-10-09 | 2019-10-09 | Simple sealing device of material-increasing and material-reducing combined machining center for manufacturing impeller blades |
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| CN110670065B true CN110670065B (en) | 2022-02-01 |
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| CN112247167A (en) * | 2020-10-24 | 2021-01-22 | 无锡夕阳康科技有限公司 | Numerical control machine tool with laser heating function |
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| CN110670065A (en) | 2020-01-10 |
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