CN115709321A - Profiling machining device of vertical stirrer and operation method - Google Patents
Profiling machining device of vertical stirrer and operation method Download PDFInfo
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- CN115709321A CN115709321A CN202211508609.0A CN202211508609A CN115709321A CN 115709321 A CN115709321 A CN 115709321A CN 202211508609 A CN202211508609 A CN 202211508609A CN 115709321 A CN115709321 A CN 115709321A
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Abstract
A profiling machining device of a vertical mixer and an operation method of the profiling machining device comprise an operation table, a bidirectional cam, a rack, a lead screw, a clamping rod, a clamping block, a profiling block, a right-angle rotating rod, a swing rod, a center rod, a touch rod, a clamping pin and a bottom plate, wherein a side plate is arranged on the left side of the operation table, a side plate hole is formed in the side surface of the side plate, a transverse plate is arranged on the upper portion of the side plate, a transverse plate hole is formed in the right side of the transverse plate, a motor plate is arranged on the left side of the transverse plate hole, two positioning blocks which are symmetrical front and back are arranged in the middle of the operation table, two clamping pin holes and two guide holes which are symmetrical left and right are arranged on the side of the two positioning blocks, a center hole is formed in the middle of the two positioning blocks, two vertical plates which are symmetrical left and right are arranged on the lower portion of the operation table, a vertical plate hole is formed in the lower portion of each vertical plate, a center shaft is arranged in the middle of the bottom plate, a sliding seat is arranged on the front side of the center shaft, a nut is arranged on the right side of the operation table, and the upper portion of the operation table is fixedly connected with the upper portion of the bottom plate.
Description
Technical Field
The invention relates to the field of vertical mixers, in particular to a profiling machining device of a vertical mixer and an operation method.
Background
In the vertical mixer course of working, there are a lot of pipe fittings that need to process, especially two different pipe fittings are connected perpendicularly, and traditional processing method needs the intersecting line of roll-off pipe fitting earlier, then cuts, welds at last, and the course of working is wasted time and energy, and processingquality is difficult to guarantee, needs the device to solve above problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the profiling machining device of the vertical stirrer and the operation method thereof, which are used for vertically connecting different pipe fittings for cutting and welding, and have the advantages of wide adaptability, high machining precision and high machining efficiency.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a vertical mixer contour machining device, includes operation panel, two-way cam, rack, lead screw, clamping rod, clamp splice, profiling block, right angle bull stick, pendulum rod, well core rod, feeler lever, clamp pin, bottom plate, the operation panel left side has the curb plate, and the curb plate side has the curb plate hole, and curb plate upper portion has the diaphragm, and the diaphragm right side has the diaphragm hole, and diaphragm hole left side has the motor board, has two locating pieces of longitudinal symmetry in the middle of the operation panel, and two locating piece sides have two clamp pin holes and the guiding hole of bilateral symmetry, and two clamp pin holes are inboard at two guiding holes, have the centre bore in the middle of two locating pieces, and the operation panel lower part has two risers of bilateral symmetry, and every riser lower part has the riser hole, have the center pin in the middle of the bottom plate, the center pin front side has the slide, and the bottom plate right side has the nut, operation panel lower part fixed connection bottom plate upper portion.
The bidirectional cam is characterized in that a bidirectional cam shaft is arranged at the lower part of the bidirectional cam, a bidirectional cam hole is formed in the middle of the bidirectional cam shaft, a gear is axially arranged on the bidirectional cam shaft, a rack sliding block is arranged at the lower part of a rack, a rack hole is formed in the right side of the rack, a clamping groove is formed in the left side of a lead screw, the bidirectional cam hole is rotationally connected with a central shaft, the bidirectional cam rotates around the central shaft, the rack sliding block is slidably connected with a sliding seat, the rack slides in the sliding seat, the bidirectional cam is meshed with the rack, the lead screw is in threaded connection with a nut, and the clamping groove is clamped at two sides of the rack hole.
The wedge blocks are arranged in the middle of the clamping bars, sliding plates are arranged on the lower portions of the clamping bars, baffle plates are arranged on the lower portions of the sliding plates, two symmetrical guide shafts are arranged on the left side and the right side of each clamping block, profiling block holes are formed in the middle of the profiling blocks, profiling grooves are formed in the outer sides of the profiling blocks, bottom grooves are formed in the lower portions of the profiling blocks, inclined planes are arranged on one sides of clamping pins, two clamping bars are arranged in a center hole, the wedge blocks are clamped between two positioning blocks, each sliding plate is in sliding connection with a same-side vertical plate hole, each baffle plate is in contact with the outer side of a same-side bidirectional cam, one clamping pin is in sliding connection with each clamping pin hole, each inclined plane is in contact with the wedge block on the same side, each positioning block is provided with one clamping block, the guide shafts on the two sides are in sliding connection with the guide holes on the two sides respectively, the profiling block holes penetrate through the upper portions of the two clamping bars, and the bottom grooves are clamped on the outer sides of the two clamping blocks.
Has the beneficial effects that:
the invention vertically connects different pipe fittings for cutting and welding, has wide adaptability, high processing precision and high processing efficiency, the contour blocks are made according to the size and specification of the workpiece before processing, the sliding track of the feeler lever in the contour groove is the track of the intersecting line of the workpiece, the intersecting line track is accurate, the processing precision is high, the upper right-angle rotating lever and the lower right-angle rotating lever are in sliding connection, the invention can adapt to the contour blocks with different specifications, the adaptability is wide, the upper right-angle rotating lever and the oscillating lever play a role in driving the feeler lever to rotate, the left right-angle rotating lever and the oscillating lever play a role in supporting and guiding, and the stability of the sliding of the feeler lever in the contour groove and the correctness of the track are ensured.
The contact between the feeler lever and the bottom of the profiling groove is ensured by the second spring and the motor, the positioning of the profiling block is divided into axis positioning and left-right direction positioning, the accurate positioning of the profiling block can ensure the correct track of the feeler lever, and the processing precision of welding and cutting can be ensured, the axis positioning and the left-right direction positioning of the profiling block are simultaneously carried out, the bidirectional cam drives the clamping rods on two sides to complete the positioning of the axis, the clamping rods drive the clamping pins and the clamping blocks on two sides to complete the left-right direction positioning of the profiling block, and the profiling groove is suitable for profiling blocks of different specifications and has high processing precision.
Drawings
FIG. 1 is a schematic view of a profiling apparatus for a vertical mixer according to the present invention.
FIG. 2 is a schematic view showing the internal structure of a profiling apparatus for a vertical mixer according to the present invention.
Fig. 3 is a schematic structural diagram of the operation table according to the present invention.
Fig. 4 is a schematic view of the structure of the bidirectional cam of the present invention.
Fig. 5 is a schematic view of a rack structure according to the present invention.
Fig. 6 is a schematic view of a screw structure according to the present invention.
FIG. 7 is a schematic view of a clamping bar according to the present invention.
Fig. 8 is a schematic view of a clamp block structure according to the present invention.
Fig. 9 is a schematic view of the structure of the profiling block according to the invention.
Fig. 10 is a schematic cross-sectional structure of the profiling block of the invention.
Fig. 11 is a schematic view of a right-angle turning rod according to the present invention.
Fig. 12 is a schematic view of a swing link structure according to the present invention.
Fig. 13 is a schematic view of a center rod structure according to the present invention.
Fig. 14 is a schematic view of a trolley structure according to the present invention.
Fig. 15 is a schematic view of the structure of the clamping pin according to the invention.
Fig. 16 is a schematic view of the bottom plate structure according to the present invention.
Detailed Description
The invention is explained in more detail below with reference to the figures and examples:
a profile modeling device of a vertical mixer comprises an operating platform 110, a bidirectional cam 130, a rack 140, a screw rod 150, a clamping rod 160, a clamping block 170, a profile block 180, a right-angle rotating rod 190, a swing rod 210, a central rod 220, a contact rod 230, a clamping pin 240 and a bottom plate 250, wherein the left side of the operating platform 110 is provided with a side plate 111, the side surface of the side plate 111 is provided with a side plate hole 112, the upper part of the side plate 111 is provided with a transverse plate 113, the right side of the transverse plate 113 is provided with a transverse plate hole 114, the left side of the transverse plate hole 114 is provided with a motor plate 115, the middle of the operating platform 110 is provided with two positioning blocks 116 which are symmetrical front and back, the side surfaces of the two positioning blocks 116 are provided with two clamping pin holes 117 and two guide holes 118 which are symmetrical left and right, the two clamping pin holes 117 are arranged inside the two guide holes 118, the middle of the two positioning blocks 116 is provided with a central hole 119, the lower part of the operating platform 110 is provided with two vertical plates 120 which are symmetrical left and right, the lower part of each vertical plate 120 is provided with a vertical plate 121, the middle of the bottom plate 250 is provided with a central shaft 251, the front side, the right side of the central shaft is provided with a nut 253, and the right side of the bottom plate 250, and the lower part of the operating platform 110 is fixedly connected with the upper part of the bottom plate 250. When the invention is used, firstly, according to the specification and the connection mode of the pipe fittings required to be connected by the stirrer, a corresponding contour block is manufactured, the track of the feeler lever sliding on the bottom of the contour groove is the intersecting line of the processed object, the invention is divided into three steps, firstly, the contour block is sleeved in from the upper parts of two clamping rods, the bottom groove is clamped on the outer sides of the clamping blocks on two sides, a screw rod is rotated, the screw rod drives a rack to slide along a sliding seat, the rack drives a gear to rotate, the gear rotates, the baffle plates on two sides are simultaneously ejected out from the two sides of a bidirectional cam, the axes of the contour blocks are centered and clamped by the clamping rods on the two sides, when the clamping rods move towards the outer side, the clamping pins on the same side are respectively ejected out from the two sides of the wedge block, the clamping block of the homonymy is ejected to the outside in the clamping pin outside, the clamping block of both sides rises and tightly rises inside the kerve, the profile modeling piece left and right directions is fixed a position, the second step, fix cutting torch or welding torch on the horizontal pole right side according to the processing needs, the third step, the starter motor, the motor rotates and drives the right angle bull stick rotation on upper portion, the right angle bull stick rotation on upper portion drives well core rod rotation through the pendulum rod on upper portion, the pendulum rod drives well core rod and feeler lever and slides along the profile modeling groove, well core rod drives the feeler lever and moves the orbit and is exactly the orbit of intersecting line, left right angle bull stick and pendulum rod swing back and forth under well core rod effect, welding torch or cutting torch with horizontal pole fixed connection will process at the work piece surface, the feeler lever rotates the round, the work piece is finished.
The lower part of the bidirectional cam 130 is provided with a bidirectional cam shaft 131, the middle of the bidirectional cam shaft 131 is provided with a bidirectional cam hole 132, the bidirectional cam shaft 131 is axially provided with a gear 133, the lower part of the rack 140 is provided with a rack slider 141, the right side of the rack 140 is provided with a rack hole 142, the left side of the screw rod 150 is provided with a clamping groove 151, the bidirectional cam hole 132 is rotatably connected with a central shaft 251, the bidirectional cam 130 rotates around the central shaft 251, the rack slider 141 is slidably connected with a sliding seat 252, the rack 140 slides in the sliding seat 252, the bidirectional cam 130 and the rack 140 are mutually meshed, the screw rod 150 is in threaded connection with a nut 253, and the clamping groove 151 is clamped at two sides of the rack hole 142.
The middle of the clamping bar 160 is provided with a wedge 161, the lower part of the clamping bar 160 is provided with a sliding plate 162, the lower part of the sliding plate 162 is provided with a baffle 163, the left side and the right side of the clamping block 170 are provided with two symmetrical guide shafts 171, the middle of the profiling block 180 is provided with a profiling block hole 181, the outer side of the profiling block 180 is provided with a profiling groove 182, the lower part of the profiling block 180 is provided with a bottom groove 183, one side of a clamping pin 240 is provided with an inclined surface 241, two clamping bars 160 are arranged in a central hole 119, the wedge 161 is clamped between two positioning blocks 116, each sliding plate 162 is in sliding connection with a side vertical plate hole 121, each baffle 163 is in contact with the outer side of the same side bidirectional cam 130, one clamping pin 240 is in sliding connection in each clamping pin hole 117, each inclined surface 241 is in contact with the same side wedge 161, each positioning block 116 is provided with one clamping block 170, the guide shafts 171 on the two sides are respectively in sliding connection with the guide holes 118 on the two sides, the profiling block holes 181 pass through the upper parts of the two clamping bars 160, and the bottom groove 183 is clamped outside the two clamping blocks 170.
The right angle rotary rod 190 has a sliding rod 191 on one side, the swing rod 210 has a swing rod hole 211 in the middle, the swing rod 210 has a swing rod hole 212 on one side, the upper portion of the central rod 220 has an upper shaft 221, the side of the central rod 220 has a side shaft 222, the lower portion of the central rod 220 has a sliding sleeve 223, the sliding sleeve 223 has a waist groove 224 in the axial direction, the upper portion of the contact rod 230 has a cross rod 231, the side plate hole 112 and the cross plate hole 114 are respectively and rotatably connected with a right angle rotary rod 190, the side of the motor plate 115 is fixedly connected with a motor 280, an output shaft of the motor 280 is fixedly connected with the upper portion of the upper right angle rotary rod 190, the upper shaft 221 and the side shaft 222 are respectively and rotatably connected with a swing rod hole 212, the two swing rods 210 rotate around the upper shaft 221 and the side shaft 222, each swing rod hole 211 is respectively and slidably connected with the same side sliding rod 191, wherein a first spring 260 is arranged in the middle of the right angle rotary rod 190 and the swing rod 210, two sides of the first spring 260 respectively abut against the right angle rotary rod 190 and the swing rod 210, the contact rod 230, the sliding sleeve 230 is slidably connected with the sliding sleeve 223, the sliding sleeve 231, the cross rod 231 is slidably connected with the waist groove 224, a second spring 270 is arranged in the middle of the contact rod 230 and the contact rod 220, the upper portion of the sliding sleeve 182, the contact rod 230, the sliding sleeve 182, the sliding sleeve 270 is abutted against the upper portion of the sliding sleeve 182, the lower contact rod 230, and the contact rod 230, and the lower contact rod 230 is slidably connected with the upper portion of the contact rod 270, and the contact rod 270.
When the invention is used, firstly, according to the specification and the connection mode of the pipe fittings to be connected of the stirrer, the corresponding contour block 180 is manufactured, the track of the contact rod 230 sliding at the bottom of the contour groove 182 is the intersecting line of the processing objects, the invention is divided into three steps, firstly, the contour block 180 is sleeved from the upper parts of two clamping bars 160, the bottom groove 183 is clamped at the outer sides of the clamping blocks 170 at two sides, the screw rod 150 is rotated, the screw rod 150 drives the rack 140 to slide along the sliding seat 252, the rack 140 drives the gear 133 to rotate, the gear 133 rotates, the baffle plates 163 at two sides are simultaneously ejected out from two sides of the bidirectional cam 130, the clamping bars 160 at two sides center and clamp the axis of the contour block 180, when the clamping bars 160 move towards the outer side, the clamping pins 240 at the same side are respectively ejected out from two sides of the wedge 161, the clamping block 170 on the same side is ejected out from the outer side of the clamping pin 240, the clamping blocks 170 on the two sides are tightly tensioned in the bottom groove 183, the profiling block 180 is positioned in the left-right direction, the cutting torch or the welding torch is fixed on the right side of the cross rod 231 according to the processing requirement, the motor 280 is started, the motor 280 rotates to drive the upper right-angle rotating rod 190 to rotate, the upper right-angle rotating rod 190 rotates to drive the central rod 220 to rotate through the upper swing rod 210, the swing rod 210 drives the central rod 220 and the contact rod 230 to slide along the profiling groove 182, the movement track of the contact rod 230 driven by the central rod 220 is the track of the intersecting line, the left right-angle rotating rod 190 and the swing rod 210 swing back and forth under the action of the central rod 220, the cutting torch fixedly connected with the cross rod 231 or the cutting torch can be processed on the surface of the workpiece, the contact rod 230 rotates for one circle, and the workpiece is processed.
The invention vertically connects different pipe fittings for cutting and welding, has wide adaptability, high processing precision and high processing efficiency, the contour block 180 is made according to the size and specification of a workpiece before processing, the sliding track of the feeler lever 230 in the contour groove 182 is the track of the intersecting line of the workpiece, the intersecting line track is accurate, the processing precision is high, the upper right-angle rotating lever 190 and the swing lever 210 are in sliding connection and can adapt to the contour blocks 180 with different specifications, the adaptability is wide, the upper right-angle rotating lever 190 and the swing lever 210 play a role in driving the feeler lever 230 to rotate, the left right-angle rotating lever 190 and the swing lever 210 play a role in supporting and guiding roles, the stability of the sliding of the feeler lever 230 in the contour groove 182 and the correctness of the track are ensured, the second spring 270 and the motor 280 ensure the contact between the feeler lever 230 and the bottom of the contour groove 182, the positioning of the contour block 180 is divided into axis positioning and the positioning in the left and right directions, the positioning accuracy of the contour block 180 can ensure that the trajectory of the feeler lever 230 can ensure the welding and the cutting, the processing precision, the mutual action and the mutual cooperation between the parts can prevent the clamping of clamping bar 160 and the left and right clamping bar 160, the positioning of the two sides of the cam block 180 and the cam 180 can be driven by the two sides at the same time, and the two sides of the cam clamping block 170, and the cam clamping bar 170, and the cam positioning of the cam clamping bar 170 can be completed at the two sides at the same time.
An operation method of a profiling device of a vertical mixer comprises the following steps: firstly, according to the specification and the connection mode of pipe fittings required to be connected by the stirrer, a corresponding profiling block 180 is manufactured, secondly, the profiling block 180 is sleeved from the upper parts of two clamping rods 160, a bottom groove 183 is clamped at the outer sides of the clamping blocks 170 at two sides, and a screw rod 150 is rotated to complete the axis positioning and the left-right direction positioning of the profiling block 180. And thirdly, fixing the cutting torch or the welding torch at the right side of the cross bar 231 according to the processing requirement. And fourthly, starting the motor 280, and driving the welding or cutting torch to complete the processing of the workpiece by the contact rod 230.
Claims (6)
1. A profiling machining device of a vertical mixer is characterized by comprising an operating platform, a bidirectional cam, a rack, a screw rod, a clamping block, a profiling block, a right-angle rotating rod, a swing rod, a central rod, a feeler lever, a clamping pin and a bottom plate, wherein a side plate is arranged on the left side of the operating platform, a side plate hole is formed in the side surface of the side plate, a transverse plate is arranged on the upper part of the side plate, a transverse plate hole is formed in the right side of the transverse plate, a motor plate is arranged on the left side of the transverse plate hole, two positioning blocks which are symmetrical front and back are arranged in the middle of the operating platform, two clamping pin holes and two guide holes which are symmetrical left and right are arranged on the side of the two positioning blocks, a central hole is formed in the middle of the two positioning blocks, two vertical plates which are symmetrical left and right are arranged on the lower part of the operating platform, a vertical plate hole is formed in the lower part of each vertical plate, a central shaft is arranged in the middle of the bottom plate, a sliding seat is arranged on the front side of the central shaft, a nut is arranged on the right side of the operating platform, and the upper part of the bottom plate is fixedly connected with the upper part of the bottom plate; the bidirectional cam is characterized in that a bidirectional cam shaft is arranged at the lower part of the bidirectional cam, a bidirectional cam hole is formed in the middle of the bidirectional cam shaft, a gear is axially arranged on the bidirectional cam shaft, a rack sliding block is arranged at the lower part of a rack, a rack hole is formed in the right side of the rack, a clamping groove is formed in the left side of a lead screw, the bidirectional cam hole is rotationally connected with a central shaft, the bidirectional cam rotates around the central shaft, the rack sliding block is slidably connected with a sliding seat, the rack slides in the sliding seat, the bidirectional cam is meshed with the rack, the lead screw is in threaded connection with a nut, and the clamping groove is clamped at two sides of the rack hole.
2. A profiling processing device for a vertical mixer as claimed in claim 1 wherein the clamping bar has a wedge in the middle, the lower part of the clamping bar has a sliding plate, the lower part of the sliding plate has a retaining plate, the clamping bar has two symmetrical guide shafts on the left and right sides, the profiling block has a profiling block hole in the middle, the profiling block has a profiling groove on the outside, the lower part of the profiling block has a bottom groove, one side of the clamping pin has an inclined surface, two clamping bars are arranged in the center hole, the two clamping bars are symmetrically arranged, the wedge is clamped between two positioning blocks, each sliding plate is slidably connected with the same side of the vertical plate hole, each retaining plate contacts with the same side of the two-way cam, a clamping pin is slidably connected in each clamping pin hole, each inclined surface contacts with the same side wedge, each positioning block has a clamping block, the guide shafts on both sides are slidably connected with the guide holes on both sides, the profiling block hole passes through the upper parts of the two clamping bars, and the bottom groove is clamped on the outside of the two clamping blocks.
3. The profiling device for the vertical mixer as claimed in claim 2, wherein the right-angle rotating rod has a sliding rod on one side, a swinging rod hole in the middle of the swinging rod, a swinging rod hole on one side of the swinging rod, an upper shaft on the upper part of the center rod, a side shaft on the side surface of the center rod, a sliding sleeve on the lower part of the center rod, a waist groove on the axial direction of the sliding sleeve, a cross rod on the upper part of the touch rod, and a right-angle rotating rod rotatably connected to each of the side plate hole and the cross plate hole.
4. The profiling device for the vertical mixer as claimed in claim 3, wherein the motor is fixedly connected to the side surface of the motor plate, the output shaft of the motor is fixedly connected to the upper part of the upper right-angle rotating rod, the upper shaft and the side shaft are respectively and rotatably connected to a swinging rod hole, the two swinging rods rotate around the upper shaft and the side shaft, each swinging rod hole is respectively and slidably connected to the sliding rod on the same side, a first spring is arranged between the right-angle rotating rod and the swinging rod on the left side, and two sides of the first spring respectively abut against the right-angle rotating rod and the swinging rod.
5. A profiling device for a vertical mixer as claimed in claim 4 wherein the feeler lever is slidably connected to the sliding sleeve, the cross bar is slidably connected to the kidney slot, a second spring is disposed between the feeler lever and the center bar, the second spring is disposed inside the sliding sleeve, the upper part of the second spring abuts against the upper part of the sliding sleeve, the lower part of the second spring abuts against the upper part of the feeler lever, the feeler lever is slidably connected to the profile slot, the feeler lever slides in the profile slot, and the lower part of the feeler lever abuts against the lower part of the profile slot.
6. A method of operating a profiling apparatus for a vertical mixer according to claim 2 including the steps of: firstly, manufacturing a corresponding profile block according to the specification and the connection mode of the pipe fittings to be connected of the stirrer; secondly, sleeving the contour block from the upper parts of the two clamping rods, clamping the bottom groove at the outer sides of the clamping blocks at the two sides, and rotating the screw rod to complete the axis positioning and the left-right direction positioning of the contour block; thirdly, fixing the cutting torch or the welding torch on the right side of the cross rod according to the processing requirement; and fourthly, starting the motor, and driving the welding or cutting torch to finish the processing of the workpiece by the feeler lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211508609.0A CN115709321A (en) | 2022-11-29 | 2022-11-29 | Profiling machining device of vertical stirrer and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211508609.0A CN115709321A (en) | 2022-11-29 | 2022-11-29 | Profiling machining device of vertical stirrer and operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115709321A true CN115709321A (en) | 2023-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211508609.0A Withdrawn CN115709321A (en) | 2022-11-29 | 2022-11-29 | Profiling machining device of vertical stirrer and operation method |
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| Country | Link |
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| CN (1) | CN115709321A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115846807A (en) * | 2023-03-01 | 2023-03-28 | 成立航空技术(成都)有限公司 | Aeroengine combustion chamber mount pad looks transversal welding set |
-
2022
- 2022-11-29 CN CN202211508609.0A patent/CN115709321A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115846807A (en) * | 2023-03-01 | 2023-03-28 | 成立航空技术(成都)有限公司 | Aeroengine combustion chamber mount pad looks transversal welding set |
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Application publication date: 20230224 |