CN113500439A - Clamping device and method for machining welding surface of thin-wall niobium alloy thrust chamber - Google Patents
Clamping device and method for machining welding surface of thin-wall niobium alloy thrust chamber Download PDFInfo
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- CN113500439A CN113500439A CN202110961894.0A CN202110961894A CN113500439A CN 113500439 A CN113500439 A CN 113500439A CN 202110961894 A CN202110961894 A CN 202110961894A CN 113500439 A CN113500439 A CN 113500439A
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- 238000003466 welding Methods 0.000 title claims abstract description 88
- 238000003754 machining Methods 0.000 title claims abstract description 38
- 229910001257 Nb alloy Inorganic materials 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000006835 compression Effects 0.000 claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 22
- 239000011253 protective coating Substances 0.000 claims abstract description 15
- 210000001503 joint Anatomy 0.000 claims description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 230000003139 buffering effect Effects 0.000 claims description 5
- 238000003672 processing method Methods 0.000 claims description 4
- 238000005336 cracking Methods 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- 239000002826 coolant Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- GAYPVYLCOOFYAP-UHFFFAOYSA-N [Nb].[W] Chemical compound [Nb].[W] GAYPVYLCOOFYAP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The application provides a clamping device and a method for machining a welding surface of a thin-wall niobium alloy thrust chamber. The device comprises a positioning shaft, threads, a clamping force buffer hole, a clamping sleeve and a compression nut; the clamping sleeve is a hollow T-shaped cylinder, one end of the clamping sleeve is connected with the positioning shaft, and the outer wall of the other end of the clamping sleeve is processed with a conical inclined plane. The outer diameter of the positioning shaft is smaller than that of the clamping sleeve; the thread is arranged at one end of the positioning shaft connected with the clamping sleeve; the clamping force buffer holes are evenly distributed between the threads and the tapered inclined surface. The screw thread is detachably connected with the compression nut. The method for processing the welding end face comprises the steps of removing the high-temperature protective coating on the end face of the thrust chamber; measuring the length of the thrust chamber; installing a thin-wall niobium alloy thrust chamber welding surface processing clamping device; processing a welding end face of the thrust chamber; processing a welding surface of the thrust chamber; processing a thrust chamber welding surface lock bottom; and machining the butting surface of the thrust chamber. The problems of low machining precision of the end face of the thrust chamber and damage of the high-temperature protective coating are solved.
Description
Technical Field
The application relates to the technical field of missile and rocket engine manufacturing, in particular to a clamping device and a method for processing a welding surface of a thin-wall niobium alloy thrust chamber.
Background
The thrust chamber is a component for completing propellant energy conversion and generating thrust in missile and rocket engines, and is often used in the high-temperature, high-pressure and high-speed airflow scouring environment. In order to prolong the service life of the base material, a high-temperature protective coating needs to be added on the inner surface and the outer surface of the thrust chamber, the end face of the coating needs to be reprocessed after the coating is prepared, and then the coating is welded with other parts. In the process of machining the welding end face, the thrust chamber needs to be clamped. On one hand, the high brittleness of the high-temperature protective coating on the surface of the thrust chamber leads the thrust chamber to be easy to crack and break under the action of compression or impact load, and on the other hand, the thrust chamber also has the characteristic of thin wall thickness, is easy to deform under stress during clamping, and can generate the conditions of thermal deformation, cutting deformation and the like during processing. Therefore, when the welding surface of the thrust chamber is processed, the processing precision of the thrust chamber is ensured, and meanwhile, the high-temperature protective coating is not damaged.
At present, when the niobium-tungsten alloy thrust chamber for processing missiles and rockets is used for welding end faces, soft materials are generally adopted to protect coatings, an open jacket is made of aviation aluminum, a four-jaw chuck of a common lathe is used for fixing and processing, and the positions of four jaws are adjusted through surface beating to realize circumferential and axial positioning.
Disclosure of Invention
The application provides a clamping device and a clamping method for machining a welding surface of a thin-wall niobium alloy thrust chamber, and aims to solve the problems of low machining precision and damage of a high-temperature protective coating.
On the one hand, the application provides a clamping device for processing a welding surface of a thin-wall niobium alloy thrust chamber, which comprises a positioning shaft, threads, a clamping force buffer hole, a clamping sleeve and a compression nut;
the clamping sleeve is a hollow cylinder, one end of the clamping sleeve is connected with the positioning shaft, and the outer wall of the other end of the clamping sleeve is provided with a conical inclined plane; the clamping force buffer holes are uniformly distributed between the threads and the conical inclined plane along the circumferential direction; the inner diameter of the positioning shaft is smaller than that of the clamping sleeve; the thread is arranged on the positioning shaft; the screw thread is detachably connected with the compression nut.
Optionally, the clamping sleeve and the positioning shaft are fixedly connected.
Optionally, the clamping sleeve is provided with a plurality of shrinkage joints along the axial direction, and the shrinkage joints are uniformly arranged on the clamping sleeve.
On the other hand, the application provides a welding end face processing method of a clamping device for processing a welding face of a thin-wall niobium alloy thrust chamber, which specifically comprises the following steps:
removing the high-temperature protective coating on the end face of the thrust chamber;
Measuring the length of the thrust chamber;
installing a thin-wall niobium alloy thrust chamber welding surface processing clamping device;
processing a welding end face of the thrust chamber;
processing a welding surface of the thrust chamber;
processing a lock bottom welding surface of the thrust chamber;
and machining the butting surface of the thrust chamber to finish machining.
Optionally, the step of processing the welding end face of the thrust chamber includes feeding a 45 ° YG-type cemented carbide offset tool from the inside of the thrust chamber to the outside of the thrust chamber, where the feeding direction is the same as the rotation direction of the thrust chamber.
Optionally, the step of processing the bottom-locking welding surface of the thrust chamber comprises processing by multiple small-amount feed by using a 90-degree YG-type hard alloy offset tool.
Optionally, the step of processing the butt joint surface of the thrust chamber includes feeding the hard alloy offset tool of the YG class at 90 degrees from the inside of the thrust chamber to the outside of the thrust chamber, so as to avoid the coating from cracking due to the contact with the coating of the butt joint surface of the coating.
According to the technical scheme, the application provides a clamping device and a method for machining the welding surface of the thin-wall niobium alloy thrust chamber. The device comprises a positioning shaft, threads, a clamping force buffer hole, a clamping sleeve and a compression nut; the clamping sleeve is a hollow cylinder, one end of the clamping sleeve is connected with the positioning shaft, and the outer wall of the other end of the clamping sleeve is provided with a conical inclined plane; the clamping force buffer holes are uniformly distributed between the threads and the conical inclined plane along the circumferential direction; the inner diameter of the positioning shaft is smaller than that of the clamping sleeve; the thread is arranged at the joint of the positioning shaft and the clamping sleeve; the screw thread is detachably connected with the compression nut. The welding end face machining method of the clamping device for machining the welding face of the thin-wall niobium alloy thrust chamber is also provided, and comprises the steps of removing the high-temperature protective coating on the end face of the thrust chamber; measuring the length of the thrust chamber; installing a thin-wall niobium alloy thrust chamber welding surface processing clamping device; processing a welding end face of the thrust chamber; processing a welding surface of the thrust chamber; processing a lock bottom welding surface of the thrust chamber; and machining the butting surface of the thrust chamber to finish machining. The problems of low machining precision of the end face of the thrust chamber and damage of the high-temperature protective coating are solved.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic axial cross-sectional view of a thin-walled niobium alloy thrust chamber welding surface processing clamping device;
FIG. 2 is a first exploded view of a clamping device for machining a welding surface of a thin-walled niobium alloy thrust chamber;
FIG. 3 is a second exploded view of a clamping device for machining a welding surface of a thin-walled niobium alloy thrust chamber;
FIG. 4 is a schematic radial cross-sectional view of a thin-walled niobium alloy thrust chamber weld face machining clamping device;
FIG. 5 is a flow chart of a method for processing a welding end face of the clamping device for processing the welding face of the thin-wall niobium alloy thrust chamber.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
FIG. 1 is a schematic axial cross-sectional view of a clamping device for machining a welding surface of a thin-wall niobium alloy thrust chamber. FIG. 2 is a first exploded view of a clamping device for machining a welding surface of a thin-walled niobium alloy thrust chamber; FIG. 3 is a second exploded view of a clamping device for machining a welding surface of a thin-wall niobium alloy thrust chamber. Referring to fig. 1-3, the clamping device for processing the welding surface of the thin-wall niobium alloy thrust chamber provided by the application comprises a positioning shaft 1, threads 2, a clamping force buffer hole 3, a clamping sleeve 4 and a compression nut 5. The clamping sleeve 4 is a hollow cylinder, one end of the clamping sleeve 4 is connected with the positioning shaft 1, and the outer wall of the other end of the clamping sleeve is provided with a conical inclined plane; the clamping force buffering holes 3 are uniformly distributed between the threads 2 and the conical inclined plane along the circumferential direction; the inner diameter of the positioning shaft 1 is smaller than that of the clamping sleeve 4; the thread 2 is arranged at the joint of the positioning shaft 1 and the clamping sleeve 4; the thread 2 is detachably connected with the compression nut 5. Wherein, the clamping sleeve 4 is fixedly connected with the positioning shaft 1. The outer wall of the clamping sleeve 4 is processed with a conical inclined plane, the inclination angle of the conical inclined plane is 30 degrees, the clamping sleeve 4 is provided with a plurality of shrinkage joints along the axial direction, and the width of each shrinkage joint is 0.2 mm; the pinch seams are arranged uniformly on the clamping sleeve 4, and the pinch seams divide the clamping sleeve 4 into a plurality of shrinkable parts uniformly. The clamping force relief hole 3 is between the thread 2 and the tapered ramp. The diameter of the clamping force buffering holes is 5mm, the clamping force buffering holes 3 are evenly distributed between the threads 2 and the conical surface along the circumferential direction, and the clamping force buffering holes 3 buffer and reduce the contraction tension of the clamping sleeve which contracts quickly.
Referring to fig. 4, a schematic radial cross-sectional view of a thin-wall niobium alloy thrust chamber welding surface processing clamping device; the clamping sleeve 4 is sleeved on the outer wall of the thrust chamber, and the conical inclined plane of the clamping sleeve 4 is axially extruded through the rotation of the compression nut 5, so that the clamping block is radially contracted, and the purpose of clamping the thrust chamber 6 is achieved.
Specifically, the clamping device can be processed on a lathe at one time, wherein the clamping sleeve 4 can be processed by nylon rods and other materials, has the characteristics of good toughness, strong wear resistance, oil resistance, shock resistance, stretching resistance, good bending strength, small water absorption, good dimensional stability and the like, and is suitable for manufacturing wear-resistant parts. The thread 2 is arranged on the positioning shaft 1, the clamping sleeve 4 is provided with a plurality of shrinkage joints along the axial direction, the shrinkage joints are uniformly arranged on the clamping sleeve 4, the shrinkage joints divide the clamping sleeve 4 into a plurality of shrinkable parts uniformly, for example, if the clamping sleeve 4 is provided with 4 shrinkage joints along the axial direction, the clamping sleeve 4 is divided into 4 shrinkable shrinkage blocks uniformly, the thread 2 at the joint of the positioning shaft 1 and the clamping sleeve is meshed with the compression nut 5, the conical inclined plane of the outer wall of the clamping sleeve 4 is extruded through the rotation of the compression nut 5, the shrinkage of the 4 positioning blocks along the circumferential direction is realized, a workpiece clamping position is formed, and the effect of clamping the thrust chamber 6 is achieved.
The specific embodiment comprises the following steps that firstly, a three-grab chuck of a lathe is used for clamping a positioning shaft of a thin-wall niobium alloy thrust chamber welding surface processing clamping device; then, a compression nut in the clamping device is loosened, the thrust chamber is placed in the clamping sleeve, and because the inner diameter of the positioning shaft is smaller than that of the clamping sleeve, the thrust chamber stops propelling when the inlet end of the thrust chamber abuts against the joint of the positioning shaft and the clamping sleeve, so that the purpose of positioning the thrust chamber is achieved; and then, a compression nut 5 is screwed through a torque wrench, the compression nut 5 is meshed with the thread 2, and when the compression nut 5 is screwed, the inclined surface of the clamping sleeve 4 generates radial pressure, so that the contraction module of the clamping sleeve 4 is contracted and wrapped on the outer wall of the thrust chamber 6, and the thrust chamber 6 is clamped.
On the other hand, the application provides a welding end face processing method of a clamping device for processing a welding face of a thin-wall niobium alloy thrust chamber, which specifically comprises the following steps:
referring to fig. 5, firstly, the high-temperature protective coating on the end surface of the thrust chamber is removed; and removing the high-temperature protective coating on the end face of the thrust chamber by using a scraper, wherein the diameter of the scraper is larger than that of the inlet end of the thrust chamber. The two ends of the scraper are simultaneously contacted with the inlet end face of the spray pipe, then the coating on the inlet end face of the spray pipe is uniformly scraped, so that the metal color of the base material is exposed, the coating is uniformly scraped by certain attention when being scraped, and otherwise, the accuracy of height measurement of the spray pipe and the accuracy of tool setting during numerical control lathe machining are influenced.
Secondly, measuring the length of the thrust chamber; the thrust chamber outlet was placed in the marble plane and the thrust chamber length was measured using a height gauge.
Installing a thin-wall niobium alloy thrust chamber welding surface processing clamping device; clamping a positioning shaft of the thin-wall niobium alloy thrust chamber welding surface processing clamping device by using a three-grab chuck of a lathe; and then loosening a compression nut in the clamping device, putting the thrust chamber into the clamping sleeve, screwing the compression nut through a torque wrench, and then sequentially striking the end surface of the thrust chamber and the step to the cylindrical section of the clamping ring by using a dial indicator, wherein the end surface jumping value of the thrust chamber rotating for one circle needs to be less than 0.02 mm.
Processing the end face of the thrust chamber; and (3) processing the welding end face, the outer diameter of the welding face, the bottom locking of the welding face and the butt joint face of the thrust chamber by using a numerical control lathe according to the final size of the welding end face of the thrust chamber. The method comprises the steps of processing a welding end face of a thrust chamber; processing a welding surface of the thrust chamber; processing a lock bottom welding surface of the thrust chamber; and machining the butting surface of the thrust chamber, and finally finishing machining.
The step of processing the welding end face of the thrust chamber comprises the steps of feeding a 45-degree YG hard alloy offset cutter from the inside of the thrust chamber to the outside of the thrust chamber, wherein the feeding direction is consistent with the rotation direction of the thrust chamber, smooth discharge of cutting must be ensured, meanwhile, a coolant is used for cooling a base material to prevent oxidation, and processing is carried out according to the final sizes of the welding end face and the welding face of the thrust chamber.
The step of processing the bottom-locking welding surface of the thrust chamber comprises the steps of adopting 90-degree YG hard alloy offset cutter, feeding a small amount of cutter for multiple times, cooling the base material by using a coolant to prevent the base material from being oxidized, and processing according to the final size of the bottom-locking welding surface of the thrust chamber.
The step of processing the butting face of the thrust chamber comprises the steps of feeding a 90-degree YG hard alloy offset cutter from the inside of the thrust chamber to the outside of the thrust chamber, wherein the turning depth is not more than 0.1mm each time, so that the phenomenon that a coating is cracked and scrapped due to contact with the coating of the butting face of the coating is avoided, meanwhile, a coolant is used for cooling the base material to prevent the base material from being oxidized, and the final size of the butting face is processed according to the thrust chamber.
After each end face of the thrust chamber is machined, the size and form and position tolerance of the welding end face of the thrust chamber are detected, an external diameter digital display micrometer is used for measuring the excircle of the welding face and the locking bottom of the welding face, and three coordinates are used for measuring the perpendicularity of the welding face relative to a reference, the excircle of the welding face and the coaxiality of the locking bottom of the welding face relative to the reference.
The trial proves that the method is used for processing the welding surface of the thrust chamber, the processing efficiency is greatly improved, the product precision is high, and the requirement of the product design precision is completely met.
The application provides a clamping device and a method for machining a welding surface of a thin-wall niobium alloy thrust chamber. The device comprises a positioning shaft, threads, a clamping force buffer hole, a clamping sleeve and a compression nut; the clamping sleeve is a hollow cylinder, one end of the clamping sleeve is connected with the positioning shaft, and the inner diameter of the positioning shaft is smaller than that of the clamping sleeve; the thread is arranged at the tail end of the positioning shaft; the screw thread is detachably connected with the compression nut.
The clamping device can be processed on a lathe at one time, so that the consistency of the overall processing reference of the clamping device and the center of a lathe chuck is ensured. After the thrust chamber is clamped, the overall accurate positioning that the clamping device and the thrust chamber shell are combined into one is realized, the processing efficiency is improved, the space size is ensured by a clamping tool, the repeated positioning precision is high, the clamping is rapid, the requirement that the coaxiality of the thrust chamber is less than or equal to 0.02mm is met, the design requirements of the sizes and the form and position tolerances of the thrust chamber are met, and the product quality is stable. In addition, when the clamping device is used for processing the welding end face of the thrust chamber, the inner diameter of the clamping sleeve is close to the outer diameter of the cylindrical section of the thrust chamber, so that four shrinkage blocks tightly wrap the excircle of the straight line section of the thrust chamber through the conical inclined plane after the clamping nut is screwed tightly, the problems of damage of a high-temperature protective coating and deformation of the thrust chamber are solved, and the form and position tolerance of processing the welding end face of the thrust chamber is well guaranteed. Meanwhile, the clamping device is convenient to disassemble and assemble, and an operator only needs to use a torque wrench, so that rigid impact does not exist, and the precision and the service life of the clamping device are influenced by the assembling and disassembling times to a minimum extent.
The application also provides a welding end face processing method of the clamping device for processing the welding face of the thin-wall niobium alloy thrust chamber, which comprises the steps of removing the high-temperature protective coating on the end face of the thrust chamber; measuring the length of the thrust chamber; installing a thin-wall niobium alloy thrust chamber welding surface processing clamping device; processing a welding end face of the thrust chamber; processing a welding surface of the thrust chamber; processing a lock bottom welding surface of the thrust chamber; and machining the butting surface of the thrust chamber to finish machining. This application uses in the processing of thrust room welding face and can protect high temperature protective coating material, has solved the deformation problem that the clamping-force is uneven in the thrust room centre gripping caused simultaneously. Ensuring that the processing sizes and form and position tolerances of the welding surface of the thrust chamber meet the assembly design requirements and the product quality is stable; the machining method provided by the application solves the difficulty that the central axis of the shell and the central axis of the clamp are not concentric in the machining of the end face of the thrust chamber, and can ensure the coaxiality of the welding lock bottom and the butt joint face of the welding face of the thrust chamber.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (7)
1. A clamping device for processing a welding surface of a thin-wall niobium alloy thrust chamber is characterized by comprising a positioning shaft (1), threads (2), a clamping force buffer hole (3), a clamping sleeve (4) and a compression nut (5);
the clamping sleeve (4) is a hollow cylinder, one end of the clamping sleeve (4) is connected with the positioning shaft (1), and the inner diameter of the positioning shaft (1) is smaller than that of the clamping sleeve (4); the thread (2) is arranged at the tail end of the positioning shaft (1); the clamping force buffer holes (3) are uniformly distributed between the threads (2) and the conical inclined plane along the circumferential direction; the clamping sleeve (4) is detachably connected with the compression nut (5).
2. The clamping device for machining the welding surface of the thin-wall niobium alloy thrust chamber is characterized in that the clamping sleeve (4) is fixedly connected with the positioning shaft (1).
3. The clamping device for machining the welding surface of the thin-wall niobium alloy thrust chamber as claimed in claim 1, wherein the clamping force buffering holes (3) are uniformly distributed between the threads (2) and the tapered inclined surface, the clamping sleeve (4) is provided with a plurality of shrinkage joints along the axial direction, and the shrinkage joints are uniformly arranged on the clamping sleeve (4).
4. The welding end face processing method of the clamping device for processing the welding face of the thin-wall niobium alloy thrust chamber is characterized by comprising the following steps of:
Removing the high-temperature protective coating on the end face of the thrust chamber;
measuring the length of the thrust chamber;
installing a thin-wall niobium alloy thrust chamber welding surface processing clamping device;
processing a welding end face of the thrust chamber;
processing a welding surface of the thrust chamber;
processing a lock bottom welding surface of the thrust chamber;
and machining the butting surface of the thrust chamber to finish machining.
5. The method as claimed in claim 4, wherein the step of machining the welding end face of the thrust chamber comprises feeding a 45 ° YG hard alloy offset tool from the inside of the thrust chamber to the outside of the thrust chamber, wherein the feeding direction is the same as the rotation direction of the thrust chamber.
6. The method as claimed in claim 4, wherein the step of machining the welding surface of the thrust chamber comprises machining the welding surface of the thrust chamber by layering using a 90 ° YG hard alloy offset tool.
7. The method as claimed in claim 4, wherein the step of machining the butt joint surface of the thrust chamber comprises feeding a 90 ° YG hard alloy offset tool from the inside of the thrust chamber to the outside of the thrust chamber to avoid cracking of the coating layer due to contact with the coating layer at the butt joint surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110961894.0A CN113500439A (en) | 2021-08-20 | 2021-08-20 | Clamping device and method for machining welding surface of thin-wall niobium alloy thrust chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110961894.0A CN113500439A (en) | 2021-08-20 | 2021-08-20 | Clamping device and method for machining welding surface of thin-wall niobium alloy thrust chamber |
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| CN113500439A true CN113500439A (en) | 2021-10-15 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19927734A1 (en) * | 1999-06-17 | 2000-12-28 | Daimler Chrysler Ag | Thrust chamber housing for satellite/space transporter propulsion system has combustion nozzle part welded to chamber, expansion nozzle housings via platinum-rhodium alloy rings |
| CN202934360U (en) * | 2012-10-30 | 2013-05-15 | 中国西电电气股份有限公司 | Numerically-controlled processing device for shielding case type thin-walled parts |
| CN105014112A (en) * | 2015-07-29 | 2015-11-04 | 重庆市上泽机电有限公司 | Outer circle turning clamp for thin-walled parts for motor |
| CN105290389A (en) * | 2015-11-13 | 2016-02-03 | 航天材料及工艺研究所 | Slurry for micro-engine thrust chamber and preparation method and application of slurry |
| CN205008929U (en) * | 2015-09-28 | 2016-02-03 | 重庆长安汽车股份有限公司 | Anchor clamps of processing solid of revolution thin wall part |
| CN106078098A (en) * | 2016-06-29 | 2016-11-09 | 航天材料及工艺研究所 | A kind of preparation method of motor power room |
| CN206952611U (en) * | 2017-05-22 | 2018-02-02 | 东方电气集团东方汽轮机有限公司 | A kind of thin-wall bush endoporus turning clamping device |
| CN112462714A (en) * | 2020-12-01 | 2021-03-09 | 陕西蓝箭航天技术有限公司 | Processing method of spacecraft thrust chamber double-layer structure |
| CN112921293A (en) * | 2021-02-01 | 2021-06-08 | 航天材料及工艺研究所 | High-silicon molybdenum silicide composite gradient coating on inner and outer surfaces of engine thrust chamber body and preparation method thereof |
| CN215393987U (en) * | 2021-08-20 | 2022-01-04 | 宁夏东方钽业股份有限公司 | Clamping device for machining welding surface of thin-wall niobium alloy thrust chamber |
-
2021
- 2021-08-20 CN CN202110961894.0A patent/CN113500439A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19927734A1 (en) * | 1999-06-17 | 2000-12-28 | Daimler Chrysler Ag | Thrust chamber housing for satellite/space transporter propulsion system has combustion nozzle part welded to chamber, expansion nozzle housings via platinum-rhodium alloy rings |
| CN202934360U (en) * | 2012-10-30 | 2013-05-15 | 中国西电电气股份有限公司 | Numerically-controlled processing device for shielding case type thin-walled parts |
| CN105014112A (en) * | 2015-07-29 | 2015-11-04 | 重庆市上泽机电有限公司 | Outer circle turning clamp for thin-walled parts for motor |
| CN205008929U (en) * | 2015-09-28 | 2016-02-03 | 重庆长安汽车股份有限公司 | Anchor clamps of processing solid of revolution thin wall part |
| CN105290389A (en) * | 2015-11-13 | 2016-02-03 | 航天材料及工艺研究所 | Slurry for micro-engine thrust chamber and preparation method and application of slurry |
| CN106078098A (en) * | 2016-06-29 | 2016-11-09 | 航天材料及工艺研究所 | A kind of preparation method of motor power room |
| CN206952611U (en) * | 2017-05-22 | 2018-02-02 | 东方电气集团东方汽轮机有限公司 | A kind of thin-wall bush endoporus turning clamping device |
| CN112462714A (en) * | 2020-12-01 | 2021-03-09 | 陕西蓝箭航天技术有限公司 | Processing method of spacecraft thrust chamber double-layer structure |
| CN112921293A (en) * | 2021-02-01 | 2021-06-08 | 航天材料及工艺研究所 | High-silicon molybdenum silicide composite gradient coating on inner and outer surfaces of engine thrust chamber body and preparation method thereof |
| CN215393987U (en) * | 2021-08-20 | 2022-01-04 | 宁夏东方钽业股份有限公司 | Clamping device for machining welding surface of thin-wall niobium alloy thrust chamber |
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