CN111659993A - Fast-assembling type protection clamp for electron beam welding - Google Patents
Fast-assembling type protection clamp for electron beam welding Download PDFInfo
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- CN111659993A CN111659993A CN202010359694.3A CN202010359694A CN111659993A CN 111659993 A CN111659993 A CN 111659993A CN 202010359694 A CN202010359694 A CN 202010359694A CN 111659993 A CN111659993 A CN 111659993A
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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
- B23K15/00—Electron-beam welding or cutting
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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Abstract
The invention discloses a fast-assembling protective fixture for electron beam welding, which comprises: and the clamping cylinder device is in a hollow cylinder shape and is used for accommodating and mounting the parts to be welded along the axial direction and clamping the mounting edge of the outer ring part so as to fix the parts to be welded. The installation cavity of the clamping cylinder device is internally provided with an installation core shaft which is axially penetrated, clamped and clamped in the installation cavity and extends upwards to the axial direction of the part to be welded, the outer circle at the upper end of the installation core shaft is provided with a pressing device, and the pressing device is used for abutting against the upper end of the inner ring piece so as to press the part to be welded downwards along the axial direction. The fast-assembling protection clamp further comprises a fast-assembling protection device, the fast-assembling protection device comprises a protection plate group, the protection plate group is used for inwards drawing in under the action of driving rotation force and is installed on the excircle of the installation mandrel through the flaring end of the part to be welded, or the protection plate group is used for outwards stretching out under the action of driving rotation force and then extends into the gap between the lower end of the inner ring part and the outer ring part so as to weld and protect the outer ring part positioned on the back of the welding line and the fast-assembling protection clamp.
Description
Technical Field
The invention relates to the technical field of electron beam welding, in particular to a quick-mounting type protection clamp for electron beam welding.
Background
When the electron beam welding penetration welding is carried out, a protection plate which is the same as a weldment material or is similar to a weldment material in grade can be placed at a proper distance on the back surface of a welding joint, and the protection plate aims to absorb the residual energy of welding electron beams and prevent metal splashing and penetrating electron beams from burning parts or tool fixtures. According to the different structural style of part and welding seam position, the mode of placing of guard plate is also corresponding different, as shown in fig. 1 and fig. 2, the guard plate is generally fixed on welding jig by the screw to keep away from welding seam position certain distance, the direction is placed to the guard plate and perpendicular electron beam current direction as far as possible, places the position and can all shelter from welding splash and surplus electron beam current, and the guard plate needs periodic replacement, avoids guard plate surface splash deposit to bruise the part.
An existing welded part is shown in fig. 3, an outer ring part and an inner ring part are fixed through argon arc welding positioning spot welding in a previous process, the outer ring part and the inner ring part are welded together through electron beam welding, an electron beam welding joint is designed in the part, an electron beam vertically enters along a seam direction, and a protection plate needs to be arranged on the back of the welding seam to protect the part below. The structure of the welded part is analyzed, and the outer ring part and the inner ring part are combined to form a narrow inner cavity on the back of the welding line, the distance between the lower end of the narrow inner cavity and the outer ring part is not large, and the arrangement space of the protection plate is greatly limited; the diameter size of the position of the welding seam is larger than the size of the small port part, the part is taken out after welding, and the protection plate needs to be arranged into a detachable form, so that the original electron beam welding split type protection clamp is designed to be as shown in fig. 4 and 5: the protection plate is composed of 4 fan-shaped plates with central angles larger than 90 degrees, the split protection plates are inserted into gaps below the inner ring piece respectively before welding, the relative positions of the 4 fan-shaped protection plates are adjusted, the protection plates are required to be mutually overlapped, the protection surface at the position of a welding line needs to be kept continuous, then the protection plates are installed into a clamp along with parts, the cone block is sleeved in the middle of the clamp to tightly support the protection plates, and the protection plates are prevented from moving radially.
The overall operation process of the split type protection clamp is complicated, and an operator needs to spend a large amount of time to adjust the relative position of each split protection plate; the split protection plates are deviated due to vibration generated in the process of loading the part into the clamp, loading the conical block, hoisting the clamp and the like, the lap joint state of the split protection plates is damaged, and the split protection plates are difficult to adjust when the part is in the clamp; if the protection surface is disconnected, the external observation cannot be carried out, and the hidden danger that the outer ring part is damaged by metal splashing and electron beam current through the protection plate exists.
Disclosure of Invention
The invention provides a quick-mounting type protection clamp for electron beam welding, which aims to solve the technical problems of complicated clamping operation, metal splashing and hidden danger that electron beam penetrates through a protection plate to damage an outer ring part in the conventional split type protection clamp for electron beam welding.
The technical scheme adopted by the invention is as follows:
the utility model provides a ready-package protection anchor clamps for electron beam welding for to wait to weld the part and carry out clamping and welding protection, wait to weld the part and include interior ring spare and connect in the outer lane part of interior ring spare through spot welding, ready-package protection anchor clamps include: the clamping cylinder device is in a hollow cylinder shape and is used for axially accommodating and mounting the part to be welded and clamping the mounting edge of the outer ring part so as to fix the part to be welded; the mounting cavity of the clamping cylinder device is internally provided with a mounting mandrel which penetrates through the part to be welded and is clamped in the mounting cavity along the axial direction and extends upwards along the axial direction, the excircle at the upper end of the mounting mandrel is provided with a pressing device, and the pressing device is used for abutting against the upper end of the inner ring piece so as to press the part to be welded downwards along the axial direction; the fast-assembling protection clamp further comprises a fast-assembling protection device, the fast-assembling protection device comprises a protection plate group, the protection plate group is used for inwards drawing in under the action of driving rotation force and is installed on the excircle of the installation mandrel through the flaring end of the part to be welded, or the protection plate group is used for outwards stretching out under the action of driving rotation force and then extends into the gap between the lower end of the inner ring part and the outer ring part so as to weld and protect the outer ring part positioned at the back of the welding line.
Furthermore, the barrel clamping device comprises a bottom plate, a hollow cylindrical installation barrel with two communicated ends is arranged on the bottom plate, an installation cavity for containing and installing the part to be welded is formed by the installation barrel and the bottom plate in a surrounding mode, and a support ring for suspending and supporting an installation edge of the outer ring part is formed on the upper end face of the installation barrel; the mounting mandrel is vertically supported in the mounting cavity, and the bottom end of the mounting mandrel is detachably connected with the bottom plate; the top end of the mounting cylinder is detachably connected with an annular compression ring, and the compression ring is used for compressing the mounting edge of the outer ring part on the upper end face of the mounting cylinder so as to enable the part to be welded to be suspended and supported in the mounting cavity.
Furthermore, the fast-assembly type protection device also comprises a mounting plate group for mounting the protection plate group and a driving and rotating frame for driving the protection plate group to act under the action of external force; the mounting disc group is sleeved on the driving and rotating frame, the lower end of the mounting disc group penetrates through the driving and rotating frame and then is connected with the flange disc of the mounting mandrel, and the protective plate group is rotatably arranged on the mounting disc group; the driving frame is rotatably sleeved on a core shaft rod of the installation core shaft, the lower end of the driving frame is supported on the flange disc, and the driving frame is further connected with the protective plate group so as to drive the protective plate group to inwards fold or outwards unfold under the action of external force.
Further, the mounting disc group comprises a fixed disc sleeved on the driving and rotating frame, and a plurality of first fixing pins and second fixing pins; the first fixing pins and the second fixing pins are respectively fixedly arranged on the fixed disc in a penetrating manner, a plurality of first fixing pins are uniformly arranged along the circumferential direction of the fixed disc in a penetrating manner, and a plurality of second fixing pins are uniformly arranged along the circumferential direction of the fixed disc in a penetrating manner; first fixed pin lower extreme and second fixed pin lower extreme pass respectively and rotate frame back and flange dish fixed connection, and vertical upwards extension behind the fixed disk is worn out respectively to first fixed pin upper end and second fixed pin upper end.
Furthermore, the protective plate group comprises a plurality of upper protective plates positioned on the upper layer and a plurality of lower protective plates positioned on the lower layer, the upper protective plates are uniformly arranged along the circumferential direction of the fixed disk in an inserting manner, the lower protective plates are uniformly arranged along the circumferential direction of the fixed disk in an inserting manner, and the upper protective plates and the lower protective plates are surrounded to form a protective plate which can be folded inwards or unfolded outwards and is in a disc shape; the lower protection plate is supported on the fixed plate in a sliding manner, the plurality of lower protection plates are arranged in one-to-one correspondence with the plurality of first fixing pins, the mounting end of each lower protection plate is rotatably arranged on the corresponding first fixing pin, and a waist-shaped lower waist-shaped groove which penetrates through the lower protection plate along the vertical direction of the surface of the lower protection plate is further arranged on each lower protection plate; the guard plate sets up with many second fixed pins one-to-one on the multi-disc, and goes up the installation end rotation of guard plate and install on the second fixed pin that corresponds the setting, goes up still to be equipped with on the guard plate to run through the last guard plate and be waist type last waist type groove along the vertical direction on upper guard plate surface.
Furthermore, the upper protection plate and the lower protection plate are the same in structure and respectively comprise an installation part and a protection part connected with the installation part; a through hole for the first fixing pin or the second fixing pin to penetrate through is processed at the end part of the mounting part, and an upper waist-shaped groove or a lower waist-shaped groove is arranged at the position, close to the protection part, on the mounting part; the protection part is arc-shaped and extends along the circumference of the fixed disk.
Furthermore, the protective plate group also comprises a separating disc, the separating disc is sleeved on the driving and rotating frame and positioned between the upper protective plate and the lower protective plate, and the separating disc simultaneously penetrates through the plurality of first fixing pins and the plurality of second fixing pins; the separation disc is used for enabling the upper protection plate and the lower protection plate to form a movable gap so as to enable the upper protection plate and the lower protection plate to be smoothly drawn back when the metal splashes and is accumulated to cause the thickening of the upper protection plate and the lower protection plate.
Furthermore, the driving frame comprises a lower rotary table which is rotatably sleeved on the excircle of the core shaft rod, a connecting cylinder which is fixedly connected with the upper surface of the lower rotary table and sleeved on the excircle of the core shaft rod, an upper rotary table which is sleeved on the excircle of the connecting cylinder and connected with the connecting cylinder through a key, and a plurality of fasteners which are used for fixing the upper rotary table and the lower rotary table at intervals; the mounting disc group and the protective plate group are respectively sleeved on the outer circle of the connecting cylinder, and the mounting disc group and the protective plate group are positioned between the upper rotary disc and the lower rotary disc; the upper rotating disc is provided with a plurality of upper driving rotating pins which are arranged corresponding to the upper waist-shaped grooves, the upper driving rotating pins are vertically arranged, the top ends of the upper driving rotating pins are fixed with the upper rotating disc, the bottom ends of the upper driving rotating pins are downwards inserted into the upper waist-shaped grooves which are correspondingly arranged, and the upper rotating disc is used for rotating under the action of external force to drive the upper driving rotating pins to drive the upper protection plates which are correspondingly arranged to rotate around the second fixing pins so as to retract inwards or stretch outwards; be equipped with on the lower carousel and correspond many lower driving rotation pins that set up with waist type groove down, the vertical setting of lower driving rotation pin, its bottom is fixed with the lower carousel, and its top upwards inserts the lower waist type inslot that corresponds the setting, and the lower carousel is used for rotating in step under the drive of last carousel and then drives down the lower guard plate that driving rotation pin drive corresponds the setting around first fixed pin and rotate in order to inwards withdraw or outwards stretch out, and then makes the guard plate inwards draw in or outwards strut.
Furthermore, a plurality of concave upper containing grooves are formed in the lower surface of the upper rotary table and are respectively arranged corresponding to the retracting state positions of the upper protection plates on the plurality of sheets, so that the upper protection plates deposited with splashed metal can be smoothly retracted to the initial state; the upper surface of the fixed disc is provided with a plurality of concave lower containing grooves which are respectively arranged corresponding to the retracting state positions of the plurality of lower protection plates, so that the lower protection plates deposited with splashed metal can be smoothly retracted to the initial state.
Furthermore, a limit step and an external thread are arranged on the excircle of the upper end of the core shaft rod, and the external thread is positioned above the limit step; the pressing device comprises a guide sleeve, a lower pressing cover plate and a locking nut, wherein the guide sleeve is sleeved on the excircle of the mandrel rod, the lower end of the guide sleeve abuts against the limiting step for limiting, the lower pressing cover plate is sleeved on the excircle of the guide sleeve, and the locking nut is in threaded connection with the excircle of the upper end of the mandrel rod and used for locking the lower pressing cover plate; the lower end face of the lower pressing cover plate abuts against the upper end face of the inner ring piece so as to press the part to be welded downwards under the action of the locking nut.
The invention has the following beneficial effects:
in the fast-assembly protection clamp for electron beam welding, the rotating protection plate group can be driven to fold inwards under the action of external force, so that the fast-assembly protection device can be quickly installed on the excircle of the installation mandrel from the flaring end of a part to be welded, the fast assembly and the fast removal of the fast-assembly protection device are realized, the assembly operation steps are greatly simplified, the preparation time before welding is shortened, and the production and processing efficiency of the part is improved; on the other hand, the protection plate group can be driven to be unfolded outwards through the action of external force and extend into the gap between the lower end of the inner ring piece and the outer ring part, so that the outer ring part on the back of the welding seam is welded and protected, the electron beam welding protection effect is controlled, stable and reliable, and the hidden danger that metal splashing and electron beam passing through the protection plate group damage the outer ring part does not exist in the welding process.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a first manner of conventional placement of the guard plate;
FIG. 2 is a second manner of conventional placement of the guard plates;
FIG. 3 is a schematic cross-sectional front view of a conventional welded part;
FIG. 4 is a schematic cross-sectional front view of a conventional split-type protective fixture for clamping a welded part;
fig. 5 is a front view structural schematic diagram of the flap type protection plate in fig. 4;
FIG. 6 is a schematic cross-sectional front view of a quick-assembly type shielding fixture for electron beam welding according to a preferred embodiment of the present invention;
FIG. 7 is a schematic view of the space explosion configuration of the ready-to-mount guard of FIG. 6;
FIG. 8 is a schematic cross-sectional front view of the assembled guard plate assembly and mounting plate stack of FIG. 6;
FIG. 9 is a schematic sectional view taken along line A-A of FIG. 8;
FIG. 10 is a cross-sectional front view of the drive frame of FIG. 6;
fig. 11 is a schematic sectional view along line B-B of fig. 10.
Description of the figures
10. A part to be welded; 11. an inner ring member; 12. an outer ring part; 20. a cartridge clamping device; 201. a mounting cavity; 21. a base plate; 22. mounting the cylinder; 23. pressing a ring; 30. installing a mandrel; 31. a flange plate; 32. a core shaft lever; 40. a pressing device; 41. a guide sleeve; 42. pressing down the cover plate; 43. locking the nut; 50. a ready-to-mount guard; 51. a guard plate group; 511. an upper protection plate; 5110. an upper waist-shaped groove; 512. a lower guard plate; 5120. a lower waist-shaped groove; 513. a divider disk; 52. mounting a disk set; 521. fixing the disc; 5210. a lower containing groove; 522. a first fixing pin; 523. a second fixing pin; 53. driving the frame to rotate; 531. a lower turntable; 5310. a limiting groove; 532. a connecting cylinder; 533. an upper turntable; 534. a fastener; 535. an upper drive pin; 536. a lower drive swivel pin; 537. a pull ring; 538. a handle.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
Referring to fig. 6 and 7, a preferred embodiment of the present invention provides a quick-assembly protection fixture for electron beam welding, for clamping and welding protection of a part 10 to be welded, where the part 10 to be welded includes an inner ring member 11 and an outer ring member 12 connected to the outside of the inner ring member 11 by spot welding, and the quick-assembly protection fixture includes: the clamping device 20 is in a hollow cylinder shape, and the clamping device 20 is used for axially accommodating and mounting the part 10 to be welded and clamping the mounting edge of the outer ring part 12 to fix the part 10 to be welded. The installation cavity 201 of the clamping cylinder device 20 is internally provided with an installation core shaft 30 which penetrates through the installation cavity 201 along the axial direction and is clamped in the installation cavity 201 to be welded with the part 10 and extends upwards along the axial direction, the outer circle at the upper end of the installation core shaft 30 is provided with a pressing device 40, and the pressing device 40 is used for abutting against the upper end of the inner ring piece 11 so as to press the part 10 to be welded downwards along the axial direction. The fast-assembly protection clamp further comprises a fast-assembly protection device 50, the fast-assembly protection device 50 comprises a protection plate group 51, the protection plate group 51 is used for being folded inwards under the action of driving rotation and is installed on the excircle of the installation mandrel 30 through the flaring end of the part to be welded 10, or the protection plate group 51 is used for being unfolded outwards under the action of driving rotation and then extends into the gap between the lower end of the inner ring piece 11 and the outer ring part 12 so as to perform welding protection on the outer ring part 12 located on the back of the welding seam.
In the fast-assembly protection clamp for electron beam welding, the part 10 to be welded is accommodated in the mounting cavity 201 of the clamping cylinder device 20, the mounting edge of the outer ring part 12 is clamped by the clamping cylinder device 20, so that the part 10 to be welded is suspended and fixed in the mounting cavity 201, and meanwhile, the pressing device 40 is used for abutting against the upper end of the inner ring part 11 to further press the part 10 to be welded downwards along the axial direction, so that the fixing and the positioning of the part 10 to be welded are realized. In practical operation, the guard plate group 51 of the ready-package type guard device 50 of the present invention can be folded inward under the action of external force driving, so that the ready-package type guard device 50 can be installed on the outer circle of the installation mandrel 30 from the flared end of the part 10 to be welded, and the guard plate group 51 can also be extended into the gap between the lower end of the inner ring 11 and the outer ring part 12 after being unfolded outward under the action of external force driving, so as to perform welding protection on the outer ring part 12 located on the back of the weld joint, thereby achieving the installation and protection effects of the ready-package type guard device 50.
In the quick-mounting protection clamp for electron beam welding, the rotating protection plate group 51 can be driven to fold inwards under the action of external force, so that the quick-mounting protection device 50 can be quickly mounted on the excircle of the mounting mandrel 30 from the flaring end of a part 10 to be welded, the quick mounting and the quick taking out of the quick-mounting protection device 50 are realized, the assembly operation steps are greatly simplified, the preparation time before welding is shortened, and the production and processing efficiency of the part is improved; on the other hand, the protection plate group 51 can be driven to open outwards by external force and extend into the gap between the lower end of the inner ring piece 11 and the outer ring part 12, so that the outer ring part 12 positioned on the back of the welding seam is welded and protected, the electron beam welding protection effect is controlled, stable and reliable, and the hidden danger that the outer ring part is damaged by the electron beam passing through the protection plate group in the welding process is avoided.
Optionally, as shown in fig. 6, the cartridge clamping device 20 includes a bottom plate 21, a hollow cylindrical mounting cylinder 22 with two ends communicating is provided on the bottom plate 21, the mounting cylinder 22 and the bottom plate 21 are surrounded to form a mounting cavity 201 for accommodating and mounting the part 10 to be welded, and the upper end face of the mounting cylinder 22 forms a support ring for suspending and supporting the mounting edge of the outer ring part 12. The installation core shaft 30 is vertically supported in the installation cavity 201, and the bottom end of the installation core shaft 30 is detachably connected with the bottom plate 21. An annular pressing ring 23 is detachably connected to the top end of the mounting cylinder 22, and the pressing ring 23 is used for pressing the mounting edge of the outer ring component 12 against the upper end face of the mounting cylinder 22 so as to suspend and support the component 10 to be welded in the mounting cavity 201.
Preferably, as shown in fig. 6, a plurality of through holes penetrating through the side wall are provided on the side wall of the mounting cylinder 22, so as to reduce the weight of the mounting cylinder 22 and facilitate the mounting and carrying of the clamp while ensuring the structural strength of the mounting cylinder. The upper end surface of the mounting cylinder 22 is further provided with a concave annular step surface, the step surface is communicated with the inner side wall of the mounting cylinder 22, and the step surface is used for supporting the mounting edge of the outer ring part 12 and limiting the supporting position of the outer ring part 12.
Optionally, as shown in fig. 6 and 7, the quick-assembly type guard 50 further includes a mounting plate group 52 for mounting the guard plate group 51, and a driving frame 53 for driving the guard plate group 51 to act under an external force. The mounting plate set 52 is sleeved on the driving frame 53, the lower end of the mounting plate set 52 passes through the driving frame 53 and then is connected with the flange plate 31 of the mounting mandrel 30, and the protection plate set 51 is rotatably installed on the mounting plate set 52. The driving frame 53 is rotatably sleeved on the mandrel rod 32 of the mounting mandrel 30, the lower end of the driving frame is supported on the flange disc 31, and the driving frame 53 is further connected with the guard plate group 51 and used for driving the guard plate group 51 to fold inwards or expand outwards under the action of external force.
In this alternative, as shown in fig. 8 and 9, the mounting disc group 52 includes a fixed disc 521 fitted over the pivot frame 53, and a plurality of first fixing pins 522 and second fixing pins 523. First fixing pin 522 and second fixing pin 523 are respectively fixed to penetrate through fixed disk 521, and a plurality of first fixing pins 522 are uniformly inserted and arranged along the circumferential direction of fixed disk 521, and a plurality of second fixing pins 523 are uniformly inserted and arranged along the circumferential direction of fixed disk 521. The lower ends of the first fixing pin 522 and the second fixing pin 523 respectively penetrate through the pivot frame 53 and then are fixedly connected with the flange plate 31, and the upper ends of the first fixing pin 522 and the second fixing pin 523 penetrate through the fixed plate 521 and then vertically extend upwards. In the specific embodiment of this alternative, the number of the first fixing pins 522 and the second fixing pins 523 is two, and the two first fixing pins 522 and the two second fixing pins 523 are uniformly inserted and arranged along the circumferential direction of the fixed disk 521, and the included angle between each two is 90 °.
In this alternative, as shown in fig. 7 to 9, the protection plate group 51 includes a plurality of upper protection plates 511 located at an upper layer and a plurality of lower protection plates 512 located at a lower layer, the plurality of upper protection plates 511 are uniformly inserted and arranged along the circumferential direction of the fixed disk 521, the plurality of lower protection plates 512 are uniformly inserted and arranged along the circumferential direction of the fixed disk 521, and the plurality of upper protection plates 511 and the plurality of lower protection plates 512 surround to form a protection plate which is folded inwards or unfolded outwards and is in a disk shape. Preferably, when the protection disc is in a furled state, the maximum outer contour size of the protection disc is smaller than the minimum inner circular surface diameter of the inner ring piece 11, and the protection disc cannot scratch the inner circular surface of the inner ring piece 11 when the fast-assembling protection device 50 is sleeved into the installation core shaft 30; under the state that the protection disc is opened, the maximum outline size of the protection disc is smaller than the diameter of the inner wall of the outer ring part 12, and the protection disc does not collide with the inner wall of the outer ring part 12. As shown in fig. 8, the lower protection plate 512 is slidably supported on the fixed plate 521, the plurality of lower protection plates 512 are correspondingly disposed to the plurality of first fixing pins 522, the mounting end of the lower protection plate 512 is rotatably mounted to the correspondingly disposed first fixing pins 522, and the lower protection plate 512 is further provided with a lower waist-shaped groove 5120 which penetrates the lower protection plate 512 along a vertical direction of the surface of the lower protection plate 512 and is waist-shaped. As shown in fig. 9, the plurality of upper protection plates 511 are disposed corresponding to the plurality of second fixing pins 523 one-to-one, and the mounting ends of the upper protection plates 511 are rotatably mounted on the corresponding second fixing pins 523, and the upper protection plates 511 are further provided with upper waist grooves 5110 which penetrate the upper protection plates 511 in a vertical direction of the surfaces of the upper protection plates 511 and are waist-shaped. In an embodiment of this alternative, as shown in fig. 7, the number of the upper protection plate 511 and the lower protection plate 512 is two, and the two upper protection plates 511 and the two lower protection plates 512 are uniformly arranged along the circumference of the fixing plate 521 in an inserting manner.
In the alternative embodiment, as shown in fig. 7, the upper protection plate 511 and the lower protection plate 512 have the same structure, and each of the upper protection plate and the lower protection plate includes a mounting portion and a protection portion connected to the mounting portion. A through hole for the first fixing pin 522 or the second fixing pin 523 to pass through is formed at the end of the mounting portion, and an upper waist-shaped groove 5110 or a lower waist-shaped groove 5120 is formed at a position on the mounting portion close to the protection portion. The shielding part is arc-shaped and extends along the circumference of the fixing plate 521, so that the disc-shaped shielding plate is surrounded when the upper and lower shielding plates 511 and 512 are extended outward.
Preferably, as shown in fig. 7, the protection plate group 51 further includes a partition plate 513, the partition plate 513 is sleeved on the rotation driving frame 53 and located between the upper protection plate 511 and the lower protection plate 512, and the partition plate 513 is simultaneously inserted through the plurality of first fixing pins 522 and the plurality of second fixing pins 523. The partition plate 513 serves to form a movable gap between the upper and lower shield plates 511 and 512 to allow the upper and lower shield plates 511 and 512 to be smoothly drawn together when the upper and lower shield plates 511 and 512 are thickened due to the accumulation of metal splashes. Specifically, the partition plate 513 is a gasket that assists in fixing and forms a gap between the upper shield 511 and the lower shield 512 so as not to affect the recovery of the shields in the case where the thickness of the shields is increased due to the accumulation of metal splashes. Further, the outer contour of the gasket is required not to interfere with the splash accumulation position on the lower protection plate 512 in the folded state, so that the recovery rotation of the lower protection plate 512 is not influenced. In actual use, the protection plate group 51 needs to be replaced regularly, and when the surface splash accumulation thickness influences the operation of the mechanism, the screw is removed, and the protection plate is replaced. The material of the protection plate is the same as the material of the part 10 to be welded in grade.
Alternatively, as shown in fig. 10 and 11, the driving frame 53 includes a lower rotary disk 531 rotatably fitted on the outer circumference of the core shaft 32, a connecting cylinder 532 fixedly connected to the upper surface of the lower rotary disk 531 and fitted on the outer circumference of the core shaft 32, an upper rotary disk 533 fitted on the outer circumference of the connecting cylinder 532 and keyed to the connecting cylinder 532, and a plurality of fasteners 534 for fixing the upper rotary disk 533 and the lower rotary disk 531 at intervals relatively. The mounting plate set 52 and the guard plate set 51 are respectively sleeved on the outer circle of the connecting cylinder 532, and the mounting plate set 52 and the guard plate set 51 are located between the upper rotary disk 533 and the lower rotary disk 531. The upper rotating disc 533 is provided with a plurality of upper rotating pins 535 corresponding to the upper waist-shaped groove 5110, the upper rotating pins 535 are vertically arranged, the top ends of the upper rotating pins 535 are fixed to the upper rotating disc 533, the bottom ends of the upper rotating pins are downwards inserted into the corresponding upper waist-shaped groove 5110, and the upper rotating disc 533 is used for rotating under the action of external force to drive the upper rotating pins 535 to drive the corresponding upper protection plate 511 to rotate around the second fixing pin 523 so as to be inwards retracted or outwards extended. The lower turntable 531 is provided with a plurality of lower driving pins 536 corresponding to the lower waist-shaped groove 5120, the lower driving pins 536 are vertically arranged, the bottom end of the lower driving pins 536 is fixed to the lower turntable 531, the top end of the lower driving pins is upwards inserted into the lower waist-shaped groove 5120 correspondingly arranged, the lower turntable 531 is driven by the upper turntable 533 to synchronously rotate so as to drive the lower driving pins 536 to drive the lower protection plate 512 correspondingly arranged to rotate around the first fixing pin 522 so as to inwardly withdraw or outwardly extend, and then the protection plate is inwardly folded or outwardly extended. In the specific embodiment of this alternative, the number of the upper driving pin 535 and the number of the lower driving pin 536 are two, and the two upper driving pins 535 and the two lower driving pins 536 are uniformly inserted and arranged along the circumferential direction of the upper turntable 533 or the lower turntable 531, and the included angle between each two is 90 °.
In this alternative, the upper turntable 533 and the lower turntable 531 are in clearance fit, and the relative angular relationship is determined by the keys, so as to ensure that the upper rotation pin 535 and the lower rotation pin 536 fixed thereon are uniformly distributed around the circumference. Preferably, the lower turntable 531 is provided with a limiting groove 5310 which is perpendicular to the surface of the lower turntable 531 and penetrates through the lower turntable 531, the first fixing pin 522 and the second fixing pin 523 penetrate into the limiting groove 5310, and the height of the bottom surface to the top surface of the steps of the first fixing pin 522 and the second fixing pin 523 is consistent. The fastening piece 534 is a fastening screw, and the fastening screw connects the upper turntable 533 and the lower turntable 531, so that the upper turntable key is attached to the bottom surface of the lower turntable key groove, the distance H between the upper turntable 533 and the lower turntable 531 is controlled, and the first fixing pin 522 and the second fixing pin 523 are ensured to smoothly slide between the upper turntable 533 and the lower turntable 531 without clamping stagnation. Preferably, in order to improve the sliding friction performance between the lower rotating disc 531 and the mounting mandrel 30 and the fixed disc 521, the lower rotating disc 531 is made of aluminum brass.
Further, as shown in fig. 7, the driving frame 53 further includes a pull ring 537 fixedly connected to the upper turntable 533 and a plurality of handles 538 fixedly connected to the pull ring 537. The pull ring 537 is arranged in parallel above the upper turntable 533.
In practice, when the quick-fit guard 50 is in the collapsed state, the guard plate set 51 is retracted inside the device, the upper pivot pin 535 is located at the distal end of the upper kidney groove 5110, and the lower pivot pin 536 is located at the distal end of the lower kidney groove 5120. The quick-mounting protection device 50 is integrally sleeved into the mandrel rod 32 of the installation mandrel 30, the lower ends of the first fixing pin 522 and the second fixing pin 523 are inserted into the flange disc 31 of the installation mandrel 30, and the lower end face of the quick-mounting protection device 50 is attached to the flange disc 31; after ready-package protector 50 packs into, anticlockwise rotation handle 538, go up carousel 533 and carousel 531 and rotate thereupon and drive round pin down and wind core shaft pole 32 anticlockwise rotation respectively, go up simultaneously and drive round pin waist type groove, drive round pin down and slide in waist type inslot down, go up the guard plate and roll around the quick rotation of second fixed pin and expand under the traction of driving round pin, drive round pin under down and protect plate and roll around first fixed pin quick expansion. When the upper driving rotating pin moves to the near end of the upper waist-shaped groove and the lower driving rotating pin moves to the near end of the lower waist-shaped groove, the upper protection plate and the lower protection plate finally form a complete protection disc in a welding seam area, and at the moment, the maximum outer contour size of the protection plate group is smaller than the diameter of the inner wall of the outer ring part 12 and does not collide with the inner wall of the outer ring part. After welding, the handle 538 is rotated in the opposite direction, the protection plate is quickly recovered between the upper rotary table and the lower rotary table under the traction of the corresponding driving pin, and when the driving pin is located at the far end of the corresponding waist-shaped groove, the quickly-assembled protection device 50 returns to a furled state, the whole protection device is taken out of the part, and the electron beam welding protection process is completed.
Preferably, the fixed disk 521 is in sliding fit with the lower rotating disk 531, and the distance S between the fixed disk 521 and the upper rotating disk 533 is controlled to be in clearance fit with the total thickness of the protection plate group 51, so as to ensure smooth rotation of the protection plates. The lower driving pins 536 should be higher than the upper surface of the fixed plate 521 by a distance T, the upper driving pins 535 should be higher than the lower surface of the upper rotating plate 533 by a distance T, and the thickness of the upper or lower shielding plates < T < the total thickness of the shielding plate group 51, so as to ensure the stable traction of the lower driving pins 536 to the lower shielding plates 512 and the upper driving pins 535 to the upper shielding plates 511 and not to interfere the rotation of another layer of shielding plates.
Preferably, as shown in fig. 7, a plurality of concave upper containing grooves are formed on the lower surface of the upper turntable 533, and the plurality of upper containing grooves are respectively disposed corresponding to the retracted state positions of the plurality of upper protection plates 511, so that the upper protection plates 511 deposited with the splashed metal are smoothly retracted to the initial state. A plurality of concave lower accommodating grooves 5210 are formed in the upper surface of the fixed disk 521, and the plurality of lower accommodating grooves 5210 are respectively disposed corresponding to the retracting state positions of the plurality of lower protection plates 512, so that the lower protection plates 512 on which the splashed metal is deposited are smoothly retracted to the initial state. After the protection plate is used for a period of time, metal can be deposited and splashed on the surface, the containing groove is formed in the position where the protection plate is retracted, the containing groove is formed and allows the protection plate which is splashed and accumulated to be smoothly retracted to the inside of the protection device, and the service cycle of the protection device is prolonged.
Optionally, as shown in fig. 6, a limiting step and an external thread are arranged on the outer circle of the upper end of the mandrel rod 32, and the external thread is located above the limiting step. The pressing device 40 comprises a guide sleeve 41 which is sleeved on the excircle of the core shaft lever 32 and the lower end of which abuts against the limit step for limiting, a lower gland plate 42 which is sleeved on the excircle of the guide sleeve 41, and a locking nut 43 which is in threaded connection with the excircle of the upper end of the core shaft lever 32 and is used for locking the lower gland plate 42. The lower end face of the lower pressing cover plate 42 abuts against the upper end face of the inner ring member 11 to press the part 10 to be welded downward by the lock nut 43.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a ready-package protection anchor clamps for electron beam welding for treating weld part (10) and carry out clamping and welding protection, treat weld part (10) including interior ring piece (11) and through spot welding connect in outer lane part (12) outside interior ring piece (11), its characterized in that, ready-package protection anchor clamps include:
the clamping device (20) is in a hollow cylinder shape, and the clamping device (20) is used for accommodating and mounting the part to be welded (10) along the axial direction and clamping the mounting edge of the outer ring part (12) so as to fix the part to be welded (10);
a mounting core shaft (30) which is axially and penetratingly arranged in the mounting cavity (201) of the barrel clamping device (20) and extends upwards and is clamped on the part (10) to be welded in the mounting cavity (201), a pressing device (40) is arranged on the excircle of the upper end of the mounting core shaft (30), and the pressing device (40) is used for abutting against the upper end of the inner ring piece (11) so as to axially and downwards press the part (10) to be welded;
the fast-assembling protection clamp further comprises a fast-assembling protection device (50), the fast-assembling protection device (50) comprises a protection plate group (51), the protection plate group (51) is used for inwards gathering under the action of driving rotation force, and the flaring end of the part to be welded (10) is installed on the excircle of the installation mandrel (30), or the protection plate group (51) is used for outwards stretching under the action of driving rotation force and then extends to the lower end of the inner ring piece (11) and the gap between the outer ring pieces (12) so as to perform welding protection on the outer ring pieces (12) positioned at the back of the welding line.
2. The ready-to-mount protection jig for electron beam welding according to claim 1,
the clamping cylinder device (20) comprises a bottom plate (21), a hollow cylindrical installation cylinder (22) with two communicated ends is arranged on the bottom plate (21), an installation cavity (201) used for containing and installing the part to be welded (10) is formed by the installation cylinder (22) and the bottom plate (21) in a surrounding mode, and a support ring used for supporting the installation edge of the outer ring part (12) in a hanging mode is formed on the upper end face of the installation cylinder (22);
the mounting mandrel (30) is vertically supported in the mounting cavity (201), and the bottom end of the mounting mandrel (30) is detachably connected with the bottom plate (21);
the top end of the installation cylinder (22) is detachably connected with a compression ring (23) in an annular shape, and the compression ring (23) is used for compressing the installation edge of the outer ring part (12) on the upper end face of the installation cylinder (22) so as to enable the part (10) to be welded to be suspended and supported in the installation cavity (201).
3. The ready-to-mount protection jig for electron beam welding according to claim 1,
the fast-assembly type protection device (50) further comprises a mounting plate group (52) used for mounting the protection plate group (51) and a driving and rotating frame (53) used for driving the protection plate group (51) to act under the action of external force;
the mounting plate group (52) is sleeved on the driving and rotating frame (53), the lower end of the mounting plate group (52) penetrates through the driving and rotating frame (53) and then is connected with the flange plate (31) of the mounting mandrel (30), and the protective plate group (51) is rotatably arranged on the mounting plate group (52);
the driving frame (53) is rotatably sleeved on a core shaft rod (32) of the installation core shaft (30), the lower end of the driving frame is supported on the flange disc (31), and the driving frame (53) is further connected with the protective plate group (51) and used for driving the protective plate group (51) to be folded inwards or unfolded outwards under the action of external force.
4. The ready-to-mount protection jig for electron beam welding according to claim 3,
the mounting disc group (52) comprises a fixed disc (521) sleeved on the driving and rotating frame (53), and a plurality of first fixing pins (522) and second fixing pins (523);
the first fixing pins (522) and the second fixing pins (523) are respectively fixedly arranged on the fixed disk (521) in a penetrating manner, a plurality of first fixing pins (522) are uniformly arranged along the circumferential direction of the fixed disk (521) in a penetrating manner, and a plurality of second fixing pins (523) are uniformly arranged along the circumferential direction of the fixed disk (521) in a penetrating manner;
the lower end of the first fixing pin (522) and the lower end of the second fixing pin (523) respectively penetrate through the driving frame (53) and then are fixedly connected with the flange disc (31), and the upper end of the first fixing pin (522) and the upper end of the second fixing pin (523) respectively penetrate through the fixed disc (521) and then vertically extend upwards.
5. The ready-to-mount protection jig for electron beam welding according to claim 4,
the protective plate group (51) comprises a plurality of upper protective plates (511) positioned on an upper layer and a plurality of lower protective plates (512) positioned on a lower layer, the upper protective plates (511) are uniformly arranged along the circumferential direction of the fixed disk (521) in a penetrating manner, the lower protective plates (512) are uniformly arranged along the circumferential direction of the fixed disk (521) in a penetrating manner, and the upper protective plates (511) and the lower protective plates (512) are surrounded to form a protective disk which can be folded inwards or unfolded outwards and is in a disk shape;
the lower protection plate (512) is slidably supported on the fixed plate (521), a plurality of lower protection plates (512) are arranged in a one-to-one correspondence manner with the first fixing pins (522), the mounting end of each lower protection plate (512) is rotatably arranged on the corresponding first fixing pin (522), and a waist-shaped lower waist-shaped groove (5120) penetrating through the lower protection plate (512) in the vertical direction of the surface of the lower protection plate (512) is further arranged on each lower protection plate (512);
the upper protection plate (511) and the second fixing pins (523) are arranged in a one-to-one correspondence mode, the mounting end of the upper protection plate (511) is rotatably installed on the second fixing pins (523) which are correspondingly arranged, and an upper waist-shaped groove (5110) which penetrates through the upper protection plate (511) along the vertical direction of the surface of the upper protection plate (511) and is waist-shaped is further formed in the upper protection plate (511).
6. The ready-to-mount protection jig for electron beam welding according to claim 5,
the upper protection plate (511) and the lower protection plate (512) are identical in structure and respectively comprise an installation part and a protection part connected with the installation part;
a through hole for the first fixing pin (522) or the second fixing pin (523) to penetrate through is processed at the end part of the mounting part, and the upper waist-shaped groove (5110) or the lower waist-shaped groove (5120) is arranged at the position, close to the protection part, on the mounting part;
the protection part is arc-shaped and extends along the circumference of the fixed disc (521).
7. The ready-to-mount protection jig for electron beam welding according to claim 5,
the protection plate group (51) further comprises a separating disc (513), the separating disc (513) is sleeved on the driving and rotating frame (53) and located between the upper protection plate (511) and the lower protection plate (512), and the separating disc (513) penetrates through the first fixing pins (522) and the second fixing pins (523) simultaneously;
the separating plate (513) is used for enabling a movable gap to be formed between the upper protection plate (511) and the lower protection plate (512) so as to enable the upper protection plate (511) and the lower protection plate (512) to be smoothly folded when metal splashing accumulation causes thickening of the upper protection plate (511) and the lower protection plate (512).
8. The ready-to-mount protection jig for electron beam welding according to claim 5,
the driving and rotating frame (53) comprises a lower rotating disc (531) rotatably sleeved on the excircle of the core shaft lever (32), a connecting cylinder (532) fixedly connected with the upper surface of the lower rotating disc (531) and sleeved on the excircle of the core shaft lever (32), an upper rotating disc (533) sleeved on the excircle of the connecting cylinder (532) and connected with the connecting cylinder (532) through a key, and a plurality of fasteners (534) for fixing the upper rotating disc (533) and the lower rotating disc (531) at intervals;
the mounting disc set (52) and the protection plate set (51) are respectively sleeved on the excircle of the connecting cylinder (532), and the mounting disc set (52) and the protection plate set (51) are positioned between the upper rotating disc (533) and the lower rotating disc (531);
a plurality of upper driving pins (535) which are arranged corresponding to the upper waist-shaped groove (5110) are arranged on the upper turntable (533), the upper driving pins (535) are vertically arranged, the top ends of the upper driving pins are fixed with the upper turntable (533), the bottom ends of the upper driving pins are downwards inserted into the upper waist-shaped groove (5110) which is correspondingly arranged, and the upper turntable (533) is used for rotating under the action of external force so as to drive the upper driving pins (535) to drive the upper protection plate (511) which is correspondingly arranged to rotate around the second fixing pin (523) to retract inwards or extend outwards;
be equipped with on lower carousel (531) with many that waist type groove (5120) corresponds the setting down drive round pin (536), drive round pin (536) vertical setting down, its bottom with carousel (531) are fixed down, and its top is upwards inserted and is corresponded the setting in waist type groove (5120) down, carousel (531) are used for down synchronous rotation and then drive under the drive of last carousel (533) it corresponds the setting to drive round pin (536) down guard plate (512) wind first fixed pin (522) rotate with inside withdrawal or outside stretching out, and then make the guard plate inwards draws in or outwards struts.
9. The ready-to-mount protection jig for electron beam welding according to claim 8,
a plurality of concave upper containing grooves are formed in the lower surface of the upper rotating disc (533), and are respectively arranged corresponding to the retracting state positions of the upper protection plates (511), so that the upper protection plates (511) deposited with splashed metal can be smoothly retracted to the initial state;
the upper surface of the fixed disc (521) is provided with a plurality of concave lower containing grooves (5210), and the plurality of lower containing grooves (5210) are respectively arranged corresponding to the retracting state positions of the plurality of lower protection plates (512), so that the lower protection plates (512) deposited with splashed metal can be smoothly retracted to the initial state.
10. The ready-to-mount protection jig for electron beam welding according to claim 3,
a limiting step and an external thread are arranged on the excircle of the upper end of the core shaft rod (32), and the external thread is positioned above the limiting step;
the pressing device (40) comprises a guide sleeve (41) which is sleeved on the excircle of the core shaft lever (32) and the lower end of the guide sleeve abuts against the limiting step for limiting, a lower pressing cover plate (42) which is sleeved on the excircle of the guide sleeve (41), and a locking nut (43) which is in threaded connection with the excircle of the upper end of the core shaft lever (32) and is used for locking the lower pressing cover plate (42);
the lower end face of the lower pressing cover plate (42) is abutted against the upper end face of the inner ring piece (11) so as to press the part (10) to be welded downwards under the action of the locking nut (43).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010359694.3A CN111659993B (en) | 2020-04-30 | 2020-04-30 | Fast-assembling type protection clamp for electron beam welding |
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| CN202010359694.3A CN111659993B (en) | 2020-04-30 | 2020-04-30 | Fast-assembling type protection clamp for electron beam welding |
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| CN111659993B CN111659993B (en) | 2021-11-30 |
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| CN113732477A (en) * | 2021-09-29 | 2021-12-03 | 中国航发航空科技股份有限公司 | Splash protection assembly for blade electron beam welding and blade welding method |
| CN116652353A (en) * | 2023-07-28 | 2023-08-29 | 中国航空制造技术研究院 | Welding assembly and welding method for double-sided cover plate cavity structure |
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