CN116275449B - Diffusion welding furnace based on displacement control and control method thereof - Google Patents
Diffusion welding furnace based on displacement control and control method thereof Download PDFInfo
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- CN116275449B CN116275449B CN202310539439.0A CN202310539439A CN116275449B CN 116275449 B CN116275449 B CN 116275449B CN 202310539439 A CN202310539439 A CN 202310539439A CN 116275449 B CN116275449 B CN 116275449B
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 198
- 238000003466 welding Methods 0.000 title claims abstract description 135
- 238000009792 diffusion process Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000003746 surface roughness Effects 0.000 claims description 44
- 238000003825 pressing Methods 0.000 claims description 33
- 239000000178 monomer Substances 0.000 claims description 26
- 238000000429 assembly Methods 0.000 claims description 24
- 230000000712 assembly Effects 0.000 claims description 24
- 230000015654 memory Effects 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 64
- 230000006872 improvement Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 208000010727 head pressing Diseases 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
Classifications
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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
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
-
- 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
- B23K20/14—Preventing or minimising gas access, or using protective gases or vacuum during welding
-
- 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
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to the technical field of diffusion welding, in particular to a diffusion welding furnace based on displacement control and a control method thereof. The displacement control-based diffusion welding furnace comprises: a ram assembly; one end of the displacement control component is connected with the side wall of the furnace body, and the other end of the displacement control component is connected with the pressure head component so as to drive the pressure head component to move along the vertical direction; the pressure head assembly applies the integral displacement H to the target workpiece under the drive of the displacement control assembly, and H meets the requirements ofWhen W is i When less than 0.2 mu m, h i The value range of (2) is 0.01mm less than or equal to h i < 0.05mm; when W is more than or equal to 0.2 mu m i H is less than or equal to 0.8 mu m i The value range of (2) is 0.05 mm-h i Less than or equal to 0.4mm. The diffusion welding furnace based on displacement control effectively reduces diffusion welding difficulty, improves diffusion welding success rate and yield, and improves product quality stability.
Description
Technical Field
The invention relates to the technical field of diffusion welding, in particular to a diffusion welding furnace based on displacement control and a control method thereof.
Background
The vacuum diffusion welding furnace is a scientific instrument used in the fields of engineering and technical science basic subjects, energy science and technology and transportation engineering. Vacuum diffusion welding refers to a welding method in which tightly attached components are kept for a period of time under a certain temperature and pressure in a vacuum environment, so that atoms between contact surfaces are mutually diffused to form connection.
In order to achieve interdiffusion between atoms of the weld face, the weld faces need to be fully bonded together. However, in practice, even if the surface treatment of the welded joint is satisfactory, the welded joint is a wavy surface like a mountain peak at a microscopic level, and there is always a minute gap between the welded faces, and atoms can only diffuse mutually at the bonding place and cannot diffuse across the gap. In order to solve this problem, as shown in fig. 1, in the conventional vacuum diffusion welding method, a welding workpiece 300 on a base 200 is physically pressurized by using a hydraulic driving ram 100 at the top end of a furnace body, and a certain pressure P is applied to the welding workpiece 300 by the ram 100, so that a certain relative displacement is generated on the joint surface, and the joint surfaces are close to each other, thereby tightly adhering. If the pressure is not applied sufficiently, effective bonding is not performed, and if the pressure is applied too much, excessive press deformation occurs, resulting in failure of the product. In the diffusion welding process, as the workpiece is heated, the workpiece generates thermal expansion deformation, so that the pressure cannot be a fixed value, and the pressure needs to be changed along with the temperature change, so that the design difficulty of the pressure parameter is great, the optimal pressure curve is difficult to find, and when the material or structure of the product is changed, repeated experiments are needed to find a new pressure control curve. This is also a major cause of high diffusion bonding difficulty and low yield.
Therefore, the existing vacuum diffusion welding method based on pressure control has the defects of high diffusion welding difficulty and low yield, and the vacuum diffusion welding method with the advantages of low diffusion welding difficulty and high yield is needed.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of high diffusion welding difficulty and low yield of the existing vacuum diffusion welding method based on pressure control in the prior art, thereby providing the diffusion welding furnace based on displacement control and the control method thereof, wherein the diffusion welding difficulty is low and the yield is high.
In order to solve the technical problems, the diffusion welding furnace based on displacement control provided by the invention comprises:
the pressure head assembly is suitable for pressing and pasting a target workpiece along the vertical direction;
one end of the displacement control component is connected with any side wall of the furnace body which is arranged oppositely in the vertical direction, and the other end of the displacement control component is connected with the pressure head component so as to drive the pressure head component to move in the vertical direction;
the pressure head assembly applies the integral displacement H to the target workpiece under the drive of the displacement control assembly, and H meets the requirements ofWhen W is i When less than 0.2 mu m, h i The value range of (2) is 0.01mm less than or equal to h i < 0.05mm; when W is more than or equal to 0.2 mu m i H is less than or equal to 0.8 mu m i The value range of (2) is 0.05 mm-h i Less than or equal to 0.4mm; wherein n is the number of layers of the welding seam joint surface of the target workpiece, h i The pressing displacement corresponding to any layer of welding seam joint surface of the target workpiece is W i The surface roughness of the weld joint surface of the layer.
Alternatively, when 0.2 μm.ltoreq.W i When less than 0.4 mu m, h i The value range of (2) is 0.05 mm-h i < 0.1mm; when W is more than or equal to 0.4 mu m i When less than 0.6 mu m, h i The value range of (2) is 0.1 mm-h i < 0.2mm; when W is more than or equal to 0.6 mu m i H is less than or equal to 0.8 mu m i The value range of (2) is more than or equal to 0.2mm and less than or equal to h i ≤0.4mm。
Optionally, the displacement control assembly comprises one or more groups of ball screws, wherein the fixed end of each group of ball screws is fixedly connected to the side wall of the furnace body so as to be in transmission connection with a motor, and the nut seat of each group of ball screws is connected with the pressure head assembly so as to drive the pressure head assembly to move.
Optionally, the pressure head assembly includes one or more pressure head monomers, and each pressure head monomer is fixedly connected with the nut seat of the ball screw; any one of the pressure head monomers can independently move along the vertical direction under the drive of the ball screw.
Optionally, the joint surface of the pressure head monomer and the target workpiece is a horizontal surface, an inclined surface and/or a special-shaped surface.
Optionally, the displacement control assemblies are two groups, wherein one group of the displacement control assemblies is connected with the top wall of the furnace body, and the other group of the displacement control assemblies is connected with the bottom wall of the furnace body; each group of displacement control assembly is correspondingly connected with one group of pressure head assembly respectively, and the two groups of pressure head assemblies jointly apply the integral displacement H to the target workpiece under the drive of the displacement control assembly.
The invention provides a control method of a diffusion welding furnace based on displacement control, which comprises the following steps:
receiving the number of layers of the weld joint surface of the target workpiece and the surface roughness of each layer of the weld joint surface;
calculating the overall displacement required to be applied to the target workpiece based on the number of layers of the weld joint surfaces of the target workpiece and the surface roughness of each layer of the weld joint surfaces;
and controlling the displacement control assembly based on the integral displacement to drive the pressure head assembly to move relative to the target workpiece.
Optionally, when the displacement control assembly is controlled to drive the pressure head assembly to move relative to the target workpiece based on the integral displacement, the displacement control assembly is controlled to selectively drive one or more pressure head monomers in the pressure head assembly to move relative to the target workpiece.
The invention also provides a control device of the diffusion welding furnace based on displacement control, which comprises:
the receiving module is used for receiving the number of layers of the welding seam joint surface of the target workpiece and the surface roughness of each layer of the welding seam joint surface;
the control module is used for calculating the integral displacement required to be applied to the target workpiece based on the number of layers of the welding seam joint surface of the target workpiece and the surface roughness of each layer of the welding seam joint surface;
and the sending module is used for controlling the displacement control assembly to drive the pressure head assembly to move relative to the target workpiece based on the integral displacement.
The present invention also provides an electronic device including: the control method comprises a processor and a memory, wherein the processor is used for executing a control program of the diffusion welding furnace based on displacement control stored in the memory so as to realize the control method of the diffusion welding furnace based on displacement control.
The present invention also provides a storage medium storing one or more programs executable by one or more processors to implement the displacement control-based control method of a diffusion welding furnace as described above.
The technical scheme of the invention has the following advantages:
1. according to the diffusion welding furnace based on displacement control, the displacement control assembly is used for controlling the pressure head assembly to apply the integral displacement to the target workpiece, the integral displacement is the sum of the pressing displacement corresponding to each layer of welding seam joint surface of the target workpiece, the pressing displacement corresponding to each layer of welding seam joint surface is determined through the surface roughness of the welding seam joint surface, so that the indirect parameter of the pressure quantity of the diffusion welding furnace based on pressure control before improvement is abandoned, the downward stroke of the pressure head is controlled according to the direct influence parameter of diffusion welding, namely the pressing displacement, and the fitting degree of the joint surface is accurately controlled, thereby achieving the aim of effective welding; compared with the diffusion welding furnace based on pressure control before improvement, the diffusion welding furnace based on displacement control of the invention eliminates all other interference factors including temperature deformation, material characteristics, structural characteristics and the like, and only ensures the fitting degree of the joint surface through displacement, thereby effectively reducing the diffusion welding difficulty, greatly improving the diffusion welding success rate and yield, and improving the product quality stability and reliability.
2. According to the displacement control-based diffusion welding furnace provided by the invention, the surface roughness of the welding seam joint surfaces of different target workpieces is different, and the surface roughness of the welding seam joint surfaces of different layers of the same target workpiece is also different, so that the required pressing displacement of the surface roughness of each layer of welding seam joint surface is required to be further accurate according to the surface roughness of the welding seam joint surface of the layer, and when W i When less than 0.2 μm, then h i H is more than or equal to 0.01mm i < 0.05mm; when W is more than or equal to 0.2 mu m i When less than 0.4 μm, then h i H is more than or equal to 0.1mm i < 0.2mm; when W is more than or equal to 0.4 mu m i When less than 0.6 μm, then h i H is more than or equal to 0.1mm i < 0.2mm; when W is more than or equal to 0.6 mu m i When the particle size is less than or equal to 0.8 mu m, h i H is more than or equal to 0.2mm i Less than or equal to 0.4mm, wherein W i H is the surface roughness of the weld joint surface i The pressing displacement required for the surface roughness of the weld joint surface of the layer; the pressing displacement required by the weld joint surfaces with different surface roughness is accurately controlled, so that the fitting degree of the joint surfaces is accurately controlled, the diffusion welding precision is further improved, and the success rate and the yield of diffusion welding are improved.
3. The invention provides a displacement control-based diffusion welding furnace, wherein a displacement control assembly comprises one or more groups of ball screws, and the fixed end of each group of ball screws is fixedly connected to the side wall of a furnace body so as to be in transmission connection with a motor; the pressure head assembly comprises one or more pressure head monomers, and each pressure head monomer is fixedly connected with a nut seat of the ball screw; any one of the pressure head monomers can independently move along the vertical direction under the drive of the ball screw; the joint surface of each pressure head monomer and the target workpiece is a horizontal surface, an inclined surface and/or a special-shaped surface; and each group of ball screw is used for independently controlling one pressure head monomer to apply downward displacement to a target workpiece, and a plurality of pressure head monomers jointly form the pressure head assembly so as to apply integral displacement to the target workpiece, thereby meeting the diffusion welding requirement of a complex workpiece structure.
4. According to the control method of the diffusion welding furnace based on displacement control, provided by the invention, the number of layers of the welding seam joint surface of the target workpiece and the surface roughness of each layer of the welding seam joint surface are received, the integral displacement required to be applied to the target workpiece is calculated based on the number of layers of the welding seam joint surface of the target workpiece and the surface roughness of each layer of the welding seam joint surface, and the displacement control component is controlled to drive the pressure head component to move relative to the target workpiece based on the integral displacement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the working principle of a diffusion welding furnace based on pressure control before modification;
FIG. 2 is a schematic diagram of the working principle of the diffusion welding furnace based on displacement control when a unidirectional displacement control assembly is arranged;
FIG. 3 is a schematic diagram of the working principle of the displacement control-based diffusion welding furnace of the invention when a bidirectional displacement control assembly is arranged;
FIG. 4 is a schematic flow chart of a control method of a diffusion welding furnace based on displacement control;
FIG. 5 is a schematic structural view of a control device of a diffusion welding furnace based on displacement control according to the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to the present invention.
Reference numerals illustrate:
10. a ram assembly; 11. a pressure head monomer;
20. a displacement control assembly; 21. a ball screw;
30. a furnace body;
40. a target workpiece;
50. and (5) a base.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
Referring to fig. 2 to 3, the diffusion welding furnace based on displacement control according to the present embodiment includes:
the pressing head assembly 10 is suitable for pressing a target workpiece along the vertical direction;
one end of the displacement control assembly 20 is connected with any side wall of the furnace body 30 which is arranged oppositely in the vertical direction, and the other end of the displacement control assembly is connected with the pressure head assembly 10 so as to drive the pressure head assembly 10 to move in the vertical direction;
the ram assembly 10 is driven by the displacement control assembly 20 to apply an integral displacement H to the target workpiece, and H meets the requirement ofWhen W is i When less than 0.2 mu m, h i The value range of (2) is 0.01mm less than or equal to h i < 0.05mm; when W is more than or equal to 0.2 mu m i H is less than or equal to 0.8 mu m i The value range of (2) is 0.05 mm-h i Less than or equal to 0.4mm; wherein n is the number of layers of the welding seam joint surface of the target workpiece, h i The pressing displacement corresponding to any layer of welding seam joint surface of the target workpiece is W i The surface roughness of the weld joint surface of the layer.
The displacement control assembly 20 is a precise linear motion device, and the feeding accuracy of the displacement control assembly 20 may theoretically meet the displacement control accuracy of the ram assembly 10, and the specific configuration mode of the displacement control assembly 20 is not specifically limited herein, for example, the displacement control assembly 20 may be configured in a motor-driven ball screw mode, a motor-driven planetary roller screw mode, a motor-driven precise power guide rail mode, and may be adjusted according to actual production requirements, which is not limited to the case described in the embodiment. In the actual production process, the surface roughness of each layer of the welding seam joint surface is measured by a surface roughness measuring instrument. Referring to fig. 2, a microscopic enlarged view of the weld joint surface of a single layer is shown by the lead S in fig. 2.
Alternatively, the displacement control assembly 20 is configured in a motor driven ball screw mode.
It should be noted that, the ram assembly 10 applies an overall displacement to the target workpiece 40 under the driving of the displacement control assembly 20, where the overall displacement is the sum of the pressing displacements corresponding to each layer of weld joint surface of the target workpiece 40; the whole displacement is expressed by H, and H satisfies the following conditionWhere n is the number of layers of the weld joint surface of the target workpiece, hi is the amount of displacement of the target workpiece by pressing down corresponding to any one layer of the weld joint surface, for example, when the target workpiece 40 is a single layer of weld, the overall amount of displacement is the amount of displacement of the target workpiece by pressing down corresponding to the single layer of the weld joint surface; if the multi-layer welding exists, the numerical value of the pressing displacement of each layer is overlapped, so that the whole displacement of the pressing head pressing is determined, the displacement control assembly 20 is further controlled, and when the target workpiece 40 is a double-layer welding seam, the whole displacement is the sum of the pressing displacement corresponding to the joint surfaces of the two layers of welding seams. In the above relation->In, when W i When less than 0.2 mu m, h i The value range of (2) is 0.01mm less than or equal to h i < 0.05mm; when W is more than or equal to 0.2 mu m i H is less than or equal to 0.8 mu m i The value range of (2) is 0.05 mm-h i Less than or equal to 0.4mm, wherein W i For the surface roughness of the weld joint surface of the layer, for example, when the target workpiece 40 is a double-layer weld, the surface roughness W of the weld joint surface of the first layer 1 =0.1 μm, the surface roughness W of the first-layer weld joint face 1 The corresponding pressing displacement h 1 H is more than or equal to 0.01mm 1 Surface roughness W of the second layer weld joint surface less than 0.05mm 2 ＝0.3μmSurface roughness W of the second layer weld joint surface 2 The corresponding pressing displacement h 2 H is more than or equal to 0.05mm 2 If the thickness is less than or equal to 0.4mm, the integral displacement H of the target workpiece is required to meet H=h 1 ＋h 2 And will not be described in detail herein.
It should be noted that, in the diffusion welding furnace based on displacement control, the displacement control component 20 controls the pressure head component 10 to apply an overall displacement to the target workpiece 40, the overall displacement is the sum of the pressing displacement corresponding to each layer of welding seam joint surface of the target workpiece 40, the pressing displacement corresponding to each layer of welding seam joint surface is determined by the surface roughness of the welding seam joint surface, so that the indirect parameter of the pressure quantity of the diffusion welding furnace based on pressure control before improvement is abandoned, the downward stroke of the pressure head is controlled according to the direct influence parameter of diffusion welding, namely the pressing displacement, and the attaching degree of the joint surface is accurately controlled, thereby achieving the purpose of effective welding; compared with the diffusion welding furnace based on pressure control before improvement, the diffusion welding furnace based on displacement control of the invention eliminates all other interference factors including temperature deformation, material characteristics, structural characteristics and the like, and only ensures the fitting degree of the joint surface through displacement, thereby effectively reducing the diffusion welding difficulty, greatly improving the diffusion welding success rate and yield, and improving the product quality stability and reliability.
Specifically, when 0.2 μm.ltoreq.W i When less than 0.4 mu m, h i The value range of (2) is 0.05 mm-h i < 0.1mm; when W is more than or equal to 0.4 mu m i When less than 0.6 mu m, h i The value range of (2) is 0.1 mm-h i < 0.2mm; when W is more than or equal to 0.6 mu m i H is less than or equal to 0.8 mu m i The value range of (2) is more than or equal to 0.2mm and less than or equal to h i ≤0.4mm。
In the above relationIn the process, the surface roughness of the weld joint surfaces of different target workpieces is different, and the surface roughness of the weld joint surfaces of different layers of the same target workpiece is also different, so that each layer of the weld joint surfacesThe pressing displacement required by the surface roughness of the layer of the weld joint surface is required to be further accurate according to the surface roughness of the layer of the weld joint surface, when W i When less than 0.2 μm, then h i H is more than or equal to 0.01mm i < 0.05mm; when W is more than or equal to 0.2 mu m i When less than 0.4 μm, then h i H is more than or equal to 0.1mm i < 0.2mm; when W is more than or equal to 0.4 mu m i When less than 0.6 μm, then h i H is more than or equal to 0.1mm i < 0.2mm; when W is more than or equal to 0.6 mu m i When the particle size is less than or equal to 0.8 mu m, h i H is more than or equal to 0.2mm i Less than or equal to 0.4mm, wherein W i H is the surface roughness of the weld joint surface i The pressing displacement required for the surface roughness of the weld joint surface of the layer; the pressing displacement required by the weld joint surfaces with different surface roughness is accurately controlled, so that the fitting degree of the joint surfaces is accurately controlled, the diffusion welding precision is further improved, and the success rate and the yield of diffusion welding are improved.
Specifically, the displacement control assembly 20 includes one or more groups of ball screws 21, wherein a fixed end of each group of ball screws 21 is fixedly connected to a side wall of the furnace body 30 to be in transmission connection with a motor, and a nut seat of each group of ball screws 21 is connected with the ram assembly 10 to drive the ram assembly 10 to move.
Optionally, the displacement control assembly 20 is configured to synchronously drive multiple groups of precise ball screw modes through multiple motors, so that multiple groups of precise ball screws simultaneously drive the pressure head assembly 10 to move, thereby ensuring the accuracy of the pressing displacement required by the displacement control assembly 20 to control the weld joint surface, accurately controlling the fitting degree of the joint surface, ensuring the accuracy of diffusion welding, and improving the success rate and yield of diffusion welding.
Referring to fig. 2, in the present embodiment, the displacement control assembly 20 includes a plurality of groups of ball screws 21, wherein fixed ends (not shown) of each group of ball screws 21 are fixedly connected to a side wall of the furnace body 30 to be in transmission connection with a motor (not shown), nut seats (not shown) of each group of ball screws 21 are connected to the ram assembly 10 to drive the ram assembly 10 to move, and the plurality of groups of ball screws 21 are cooperatively driven by the plurality of motors to drive the ram assembly 10 to apply an integral displacement to a target workpiece in a vertical direction.
Specifically, the ram assembly 10 includes one or more ram monomers 11, and each ram monomer 11 is fixedly connected with a nut seat of the ball screw 21; any one of the ram units 11 can be independently moved in the vertical direction under the driving of the ball screw 21.
It should be noted that, referring to fig. 2, the ram assembly 10 may be an integral structure, and the ram assembly 10 may be driven by multiple sets of ball screws 21 cooperatively driven by multiple motors. Referring to fig. 3, the pressure head assembly 10 may also be a split structure including a plurality of pressure head monomers 11, each pressure head monomer 11 is fixedly connected with a nut seat of the ball screw 21, and any one pressure head monomer 11 can be driven by the ball screw 21 to move independently along the vertical direction; the displacement amount of each ram monomer 11 may be inconsistent; the joint surface (not shown in the figure) between each pressing head unit 11 and the target workpiece may be a plane, an inclined surface, or a special-shaped surface, which may be adjusted according to the actual production situation, and is not limited to the situation described in the embodiment; and each group of ball screw 21 is used for independently controlling one pressure head monomer 11 to apply a pushing displacement to a target workpiece, and a plurality of pressure head monomers 11 jointly form the pressure head assembly 10 so as to apply an integral displacement to the target workpiece, thereby meeting the diffusion welding requirement of a complex workpiece structure.
Specifically, the joint surface of the pressing head unit 11 and the target workpiece is a horizontal surface, an inclined surface and/or a special-shaped surface.
Specifically, the displacement control assemblies 20 are two groups, wherein one group of the displacement control assemblies 20 is connected with the top wall of the furnace body 30, and the other group of the displacement control assemblies is connected with the bottom wall of the furnace body 30; each group of displacement control assemblies 20 is correspondingly connected with one group of pressure head assemblies 10 respectively, and the two groups of pressure head assemblies 10 jointly apply the integral displacement H to the target workpiece under the drive of the displacement control assemblies 20.
It should be noted that, when the displacement control assemblies 20 are only one group, the diffusion welding furnace based on displacement control further includes a base 50, the base 50 is adapted to carry a target workpiece, the displacement control assemblies 20 are connected with a top wall of the furnace body 30, the base 50 is connected with a bottom wall of the furnace body 30, and the displacement control assemblies 20 drive the ram assemblies 10 to approach the base 50 along a vertical direction, so as to apply an overall displacement H to the target workpiece; when the two sets of displacement control assemblies 20 are provided, one set of displacement control assemblies 20 is connected with the top wall of the furnace body 30, the other set of displacement control assemblies 20 is connected with the bottom wall of the furnace body 30, each set of displacement control assemblies 20 is correspondingly connected with one set of pressure head assemblies 10, and the two sets of pressure head assemblies 10 apply the integral displacement amount H to the target workpiece under the drive of the displacement control assemblies 20.
Example two
Referring to fig. 4, this embodiment provides a flow chart of a control method of a diffusion welding furnace based on displacement control, including:
s61, receiving the number of layers of the welding seam joint surface of the target workpiece and the surface roughness of each layer of welding seam joint surface.
S62, calculating the integral displacement required to be applied to the target workpiece based on the number of layers of the weld joint surfaces of the target workpiece and the surface roughness of each layer of the weld joint surfaces.
S63, controlling the displacement control assembly 20 to drive the pressure head assembly 10 to move relative to the target workpiece based on the integral displacement.
In this embodiment, the control accuracy of the displacement control unit 20 may be enough to meet the pressing displacement required by the target workpiece, and the specific control mode of the displacement control unit 20 is not specifically limited herein.
S61 to S63 are collectively described below:
in the embodiment of the invention, the controller receives the number of layers of the welding seam combination surface of the target workpiece and the surface roughness of each layer of the welding seam combination surface, calculates the integral displacement required to be applied to the target workpiece based on the number of layers of the welding seam combination surface of the target workpiece and the surface roughness of each layer of the welding seam combination surface, wherein the integral displacement is the sum of the pressing displacement corresponding to each layer of the welding seam combination surface of the target workpiece, the pressing displacement corresponding to each layer of the welding seam combination surface is determined by the surface roughness of the welding seam combination surface of the layer, and then transmits a signal to the displacement control assembly 20, and the displacement control assembly 20 drives the pressure head assembly 10 to move relative to the target workpiece based on the integral displacement.
According to the control method of the diffusion welding furnace based on displacement control, the number of layers of the welding seam joint surface of the target workpiece and the surface roughness of each layer of the welding seam joint surface are received, the integral displacement required to be applied to the target workpiece is calculated based on the number of layers of the welding seam joint surface of the target workpiece and the surface roughness of each layer of the welding seam joint surface, the displacement control assembly 20 is controlled to drive the pressure head assembly 10 to move relative to the target workpiece based on the integral displacement, and compared with the control method of the diffusion welding furnace based on pressure control before improvement, the control method of the diffusion welding furnace based on displacement control discards the indirect parameter of the pressure quantity based on pressure control before improvement, eliminates all other interference factors including temperature deformation, material characteristics, structural characteristics and the like, only needs to control downward stroke of a pressure head according to direct influence parameters of diffusion welding, namely downward displacement, accurately controls the joint degree of the joint surface, and further achieves the purpose of effective welding, effectively reduces diffusion welding difficulty, greatly improves diffusion welding success rate and yield, and improves stability and reliability of product quality.
Specifically, when the displacement control assembly 20 is controlled to drive the ram assembly 10 to move relative to the target workpiece based on the overall displacement, the displacement control assembly 20 is controlled to selectively drive one or more ram units 11 in the ram assembly 10 to move relative to the target workpiece.
In step S63, when the displacement control assembly 20 is controlled to drive the ram assembly 10 to move relative to the target workpiece based on the overall displacement, one or more ball screws 21 in the displacement control assembly 20 are controlled to selectively drive one or more ram monomers 11 in the ram assembly 10 to apply a pressing displacement to the target workpiece, so as to meet the diffusion welding requirement of the complex workpiece structure.
Example III
Fig. 5 shows a control device of a diffusion welding furnace based on displacement control according to an embodiment of the present invention, as shown in fig. 5, the device includes:
the receiving module 701 is configured to receive the number of layers of the weld joint surface of the target workpiece and the surface roughness of each layer of the weld joint surface. The detailed description refers to the corresponding related description of the above method embodiments, and will not be repeated here.
And the control module 702 is used for calculating the integral displacement required to be applied by the target workpiece based on the number of layers of the welding seam joint surface of the target workpiece and the surface roughness of each layer of the welding seam joint surface. The detailed description refers to the corresponding related description of the above method embodiments, and will not be repeated here.
And the sending module 703 is used for controlling the displacement control assembly 20 to drive the ram assembly 10 to move relative to the target workpiece based on the integral displacement. The detailed description refers to the corresponding related description of the above method embodiments, and will not be repeated here.
Example IV
The present embodiment provides an electronic device, which is shown in fig. 6 in combination, and the electronic device may include a processor 901 and a memory 902, where the processor 901 and the memory 902 may be connected by a bus or other manners, and in fig. 6, the connection is exemplified by a bus.
The processor 901 may be a central processing unit (CentWl Processing Unit, CPU). The processor 901 may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific IntegWted Circuit, ASIC), field-programmable Gate arrays (FPGA) or other programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or combinations thereof.
The memory 902 is used as a non-transitory computer readable storage medium for storing non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules corresponding to the methods provided in the embodiments of the present invention. The processor 901 executes various functional applications of the processor and data processing, i.e., implements the methods in the above-described method embodiments, by running non-transitory software programs, instructions, and modules stored in the memory 902.
The memory 902 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created by the processor 901, and the like. In addition, the memory 902 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 902 optionally includes memory remotely located relative to processor 901, which may be connected to processor 901 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
One or more modules are stored in the memory 902 that, when executed by the processor 901, perform the methods of the method embodiments described above.
The specific details of the electronic device may be correspondingly understood by referring to the corresponding related descriptions and effects in the above method embodiments, which are not repeated herein.
It will be appreciated by those skilled in the art that implementing all or part of the above-described methods in the embodiments may be implemented by a computer program for instructing relevant hardware, and the program may be stored in a computer readable storage medium, and the program may include the steps of the embodiments of the above-described methods when executed. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a random access Memory (Wndom Access Memory, WM), a Flash Memory (Flash Memory), a Hard Disk (HDD), or a Solid State Drive (SSD); the storage medium may also comprise a combination of memories of the kind described above.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (11)
1. A displacement control-based diffusion welding furnace, comprising:
a ram assembly (10) adapted to press against a target workpiece in a vertical direction;
one end of the displacement control component (20) is connected with any side wall of the furnace body (30) which is arranged oppositely along the vertical direction, and the other end of the displacement control component is connected with the pressure head component (10) so as to drive the pressure head component (10) to move along the vertical direction;
the pressure head assembly (10) is driven by the displacement control assembly (20) to apply the integral displacement H to the target workpiece, and the integral displacement H meets the requirements ofWhen W is i When less than 0.2 mu m, h i The value range of (2) is 0.01mm less than or equal to h i < 0.05mm; when W is more than or equal to 0.2 mu m i H is less than or equal to 0.8 mu m i The value range of (2) is 0.05 mm-h i Less than or equal to 0.4mm; wherein n is the number of layers of the welding seam joint surface of the target workpiece, h i The pressing displacement corresponding to any layer of welding seam joint surface of the target workpiece is W i The surface roughness of the weld joint surface of the layer.
2. The displacement control-based diffusion welding furnace according to claim 1, wherein,
when W is more than or equal to 0.2 mu m i When less than 0.4 mu m, h i The value range of (2) is 0.05 mm-h i ＜0.1mm；
When W is more than or equal to 0.4 mu m i When less than 0.6 mu m, h i The value range of (2) is 0.1 mm-h i ＜0.2mm；
When W is more than or equal to 0.6 mu m i H is less than or equal to 0.8 mu m i The value range of (2) is more than or equal to 0.2mm and less than or equal to h i ≤0.4mm。
3. The displacement control-based diffusion welding furnace according to claim 1, wherein,
the displacement control assembly (20) comprises one or more groups of ball screws (21), wherein the fixed end of each group of ball screws (21) is fixedly connected to the side wall of the furnace body (30) so as to be in transmission connection with a motor, and the nut seat of each group of ball screws (21) is connected with the pressure head assembly (10) so as to drive the pressure head assembly (10) to move.
4. A displacement control-based diffusion welding furnace according to claim 3, wherein the ram assembly (10) comprises one or more ram monomers (11), each ram monomer (11) being fixedly connected to a nut seat of the ball screw (21); any one of the pressure head monomers (11) can independently move along the vertical direction under the drive of the ball screw (21).
5. The displacement control-based diffusion welding furnace according to claim 4, wherein the joint surface of the ram monomer (11) and the target workpiece is a horizontal surface, an inclined surface, and/or a special-shaped surface.
6. The displacement control-based diffusion welding furnace according to any one of claims 1 to 5, wherein the displacement control assemblies (20) are provided in two groups, one group of the displacement control assemblies (20) being connected to a top wall of the furnace body (30) and the other group being connected to a bottom wall of the furnace body (30); each group of displacement control components (20) is correspondingly connected with one group of pressure head components (10), and the two groups of pressure head components (10) jointly apply the integral displacement H to the target workpiece under the drive of the displacement control components (20).
7. A control method applied to the displacement control-based diffusion welding furnace according to any one of claims 1 to 6, comprising:
receiving the number of layers of the weld joint surface of the target workpiece and the surface roughness of each layer of the weld joint surface;
calculating the overall displacement required to be applied to the target workpiece based on the number of layers of the weld joint surfaces of the target workpiece and the surface roughness of each layer of the weld joint surfaces;
and controlling the displacement control assembly (20) to drive the pressure head assembly (10) to move relative to the target workpiece based on the integral displacement.
8. The displacement control-based control method of a diffusion welding furnace according to claim 7, wherein when the displacement control assembly (20) is controlled to drive the ram assembly (10) to move relative to the target workpiece based on the overall displacement, the displacement control assembly (20) is controlled to selectively drive one or more ram monomers (11) in the ram assembly (10) to move relative to the target workpiece.
9. A control device applied to the displacement-based controlled diffusion welding furnace according to any one of claims 1 to 6, comprising:
the receiving module is used for receiving the number of layers of the welding seam joint surface of the target workpiece and the surface roughness of each layer of the welding seam joint surface;
the control module is used for calculating the integral displacement required to be applied to the target workpiece based on the number of layers of the welding seam joint surface of the target workpiece and the surface roughness of each layer of the welding seam joint surface;
and the sending module is used for controlling the displacement control assembly (20) to drive the pressure head assembly (10) to move relative to the target workpiece based on the integral displacement.
10. An electronic device, comprising: the control method for the diffusion welding furnace based on displacement control comprises a processor and a memory, wherein the processor is used for executing a control program of the diffusion welding furnace based on displacement control stored in the memory so as to realize the control method for the diffusion welding furnace based on displacement control according to any one of claims 7-8.
11. A storage medium storing one or more programs executable by one or more processors to implement the displacement control-based control method of the diffusion welding furnace according to any one of claims 7 to 8.
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