CN113193710A - Anti-deformation device and process for friction welding of rotor conducting bar - Google Patents
Anti-deformation device and process for friction welding of rotor conducting bar Download PDFInfo
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- CN113193710A CN113193710A CN202110538922.8A CN202110538922A CN113193710A CN 113193710 A CN113193710 A CN 113193710A CN 202110538922 A CN202110538922 A CN 202110538922A CN 113193710 A CN113193710 A CN 113193710A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0056—Manufacturing winding connections
- H02K15/0068—Connecting winding sections; Forming leads; Connecting leads to terminals
Abstract
The invention discloses a friction welding anti-deformation device and process for a rotor conducting bar, and relates to the technical field of motor processing. The technical scheme is characterized by comprising an outer circular ring, an inner circular ring and a positioning and clamping assembly, wherein the positioning and clamping assembly comprises a positioning block and a movable clamping block assembly; after the device rotates, the positioning block moves to be matched with the outer circular ring and self-locked under the action of centrifugal force; in the moving process of the positioning block, the movable clamping assembly is in a contraction state, and after the positioning block stops moving, the movable clamping assembly moves to an outer support state under the action of centrifugal force; the movable clamping block assembly in an external support state is positioned between adjacent rotor guide bars and is in contact with the rotor guide bars; a second self-locking structure is arranged between the movable clamping block assembly and the rotor guide bar, so that the relative position of the movable clamping block assembly and the rotor guide bar is kept unchanged. The invention can prevent the rotor conducting bar from displacement and deformation during friction welding, thereby improving the production efficiency.
Description
Technical Field
The invention relates to the technical field of motor processing, in particular to a friction welding anti-deformation device and process for a rotor guide bar.
Background
The common welding method of the rotor conducting bar and the end ring of the motor is that the end ring is placed on a welding device, a motor rotor is installed, and after one end of the conducting bar on the rotor is positioned with a concave groove of the end ring, welding flux is placed in the concave groove. And then heating the conducting bars and the end rings in sequence along the circumference, and welding the rotor conducting bars and the end rings together after the welding agent is melted.
The processing method of the motor rotor comprises the steps of placing the guide bars in the guide bar grooves of the motor rotor, enabling the distances between the guide bars and the end faces of the motor rotor to be basically consistent, riveting and fixing the guide bars, and then machining the shapes of the two ends of the guide bars on a lathe to enable the shapes of the two ends of the guide bars to be consistent with the shapes of the end ring concave grooves.
After the rotor guide bar and the end ring are welded by the method, the excircle of the end ring needs to be machined on a lathe, so that the welding deformation of the end ring is removed, and the concentricity of the end ring and a shaft, the balance of a rotor and the quality of a motor are guaranteed.
However, the welding method has the defects of higher processing cost, lower production efficiency and longer process flow.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the anti-deformation device for the friction welding of the rotor conducting bars, and the device can prevent the rotor conducting bars from displacing and deforming during the friction welding, so that the production efficiency is improved.
In order to achieve the purpose, the invention provides the following technical scheme:
a rotor conducting bar friction welding anti-deformation device includes:
an outer ring;
an inner circular ring;
the positioning piece is detachably arranged between the outer ring and the inner ring and used for limiting the circumferential positions of the outer ring and the inner ring;
the positioning and clamping components comprise positioning blocks and movable clamping block components arranged on the positioning blocks, and the movable clamping block components comprise a contraction state and an outer support state;
after the device rotates, the positioning block moves to be matched with the outer circular ring under the action of centrifugal force; a first self-locking structure is arranged between the positioning block and the outer ring, so that the relative position of the positioning block and the outer ring is kept unchanged;
in the moving process of the positioning block, the movable clamping assembly is in a contraction state, and after the positioning block stops moving relative to the outer ring, the movable clamping assembly moves to an outer support state relative to the positioning block under the action of centrifugal force;
the movable clamping block assembly in an external support state is positioned between adjacent rotor guide bars and is in contact with the rotor guide bars; and a second self-locking structure is arranged between the movable clamping block assembly and the rotor guide bar, so that the relative position of the movable clamping block assembly and the rotor guide bar is kept unchanged.
Furthermore, two opposite side walls of the positioning block are symmetrically provided with movable grooves, and the bottom wall in each movable groove is provided with a first guide inclined plane;
the movable clamping block assembly comprises two movable clamping blocks which are respectively embedded in the movable grooves, and a second guide inclined plane matched with the first guide inclined plane is arranged on each movable clamping block;
a first elastic piece is arranged between the movable clamping block and the positioning block, and the elastic force of the first elastic piece enables the movable clamping block assembly to have the tendency of being kept in a contraction state;
in a contraction state, the side wall of the movable clamping block is concave or flush with the side wall of the positioning block, and in an external support state, the side wall of the movable clamping block protrudes out of the side wall of the positioning block.
Furthermore, a first limiting piece matched with the movable clamping block is arranged in the positioning block.
Furthermore, a sliding cavity matched with the positioning block is arranged in the inner circular ring, a second elastic piece is arranged in the sliding cavity, and the positioning block tends to move towards the axis due to the elastic force of the second elastic piece.
Further, a second limiting piece used for preventing the positioning block from being separated from the sliding cavity is arranged on the inner circular ring.
Furthermore, the first self-locking structure comprises an inclined surface self-locking structure, and a first through hole matched with the positioning block is formed in the outer ring; a first self-locking inclined plane is arranged on one inner wall of the first through hole, and a second self-locking inclined plane matched with the first self-locking inclined plane is arranged on the positioning block.
Furthermore, the second self-locking structure comprises an inclined surface self-locking structure, and a third self-locking inclined surface in contact fit with the rotor guide bar is arranged on the movable clamping block assembly.
Furthermore, the device also comprises a self-locking release piece which can act on all the positioning blocks simultaneously so that the positioning blocks get rid of self-locking and move towards the axis direction.
Furthermore, the self-locking release part is a positioning sleeve arranged on the outer side of the outer ring, and the inner side wall of the positioning sleeve is in threaded fit with the outer side wall of the outer ring; the inner side wall of the positioning sleeve is provided with a conical surface used for pushing the positioning block.
The invention also aims to provide a friction welding process of a rotor conducting bar by applying the deformation preventing device, which comprises the following steps:
s01, mounting the deformation prevention device on the rotor;
s02, controlling the rotor to rotate, enabling the positioning and clamping assembly to move under the action of centrifugal force, and positioning and clamping the rotor conducting bar;
s03, controlling the rotor to be static, then controlling the end ring to rotate at a high speed, and welding the end ring and the rotor guide bar together after contacting with each other, wherein the anti-deformation device can prevent the rotor guide bar from displacing and deforming in the friction welding process;
and S04, detaching the deformation preventing device from the rotor.
In conclusion, the invention has the following beneficial effects:
1. the movable clamping blocks are used for positioning and clamping the rotor conducting bars, so that the rotor conducting bars can be prevented from being displaced or deformed during friction welding, and the production efficiency is improved;
2. after the anti-deformation device is adopted, the machining can be completed through friction welding, and the procedures of turning the rotor guide bar, turning the concave surface of the end ring and turning the excircle and the end face of the end ring can be omitted, so that the production efficiency is improved, and the process flow is optimized.
Drawings
FIG. 1 is a schematic structural view of a rotor bar friction welding deformation preventing device in example 1;
FIG. 2 is a schematic view showing the structure of a positioning and clamping assembly in embodiment 1;
FIG. 3 is a schematic view of the positioning block of embodiment 1;
FIG. 4 is a schematic view showing the structure of an outer ring in example 1;
FIG. 5 is a schematic view showing the structure of a position sleeve in embodiment 1;
FIG. 6 is a schematic view showing the structure of an inner ring in example 1;
fig. 7 is a schematic structural view of the movable clamping block in embodiment 1.
In the figure: 1. an outer ring; 11. a first through hole; 111. a first self-locking ramp; 12. a second through hole; 13. a convex ring; 2. a positioning sleeve; 21. a conical surface; 22. a hole of abdication; 3. an inner circular ring; 31. a sliding cavity; 32. a third through hole; 33. positioning holes; 34. a spacing pin; 4. positioning blocks; 41. a limiting plate; 42. a second self-locking bevel; 43. pushing the conical surface; 44. a movable groove; 45. a first guide slope; 46. a screw hole; 47. a second sink tank; 5. a movable clamping block; 51. a second guide slope; 52. a first movable hole; 53. a second movable hole; 54. a third self-locking bevel; 55. a first sink tank; 6. a limit screw; 71. a first elastic member; 72. a second elastic member; 8. and a positioning pin.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example 1:
a rotor conducting bar friction welding anti-deformation device refers to fig. 1 and 2, and comprises an outer ring 1 and an inner ring 3; a plurality of positioning and clamping assemblies arranged along the circumferential direction are arranged in the inner ring 3, the number of the positioning and clamping assemblies is matched with that of the rotor conducting bars, namely, one positioning and clamping assembly is arranged between every two adjacent rotor conducting bars; the positioning and clamping assembly comprises a positioning block 4 and a movable clamping block assembly arranged on the positioning block 4, and the movable clamping block assembly comprises a contraction state and an outer support state; after the device rotates, the positioning block 4 moves to be matched with the outer ring 1 under the action of centrifugal force; a first self-locking structure is arranged between the positioning block 4 and the outer ring 1, so that the relative position of the positioning block 4 and the outer ring 1 is kept unchanged; in the moving process of the positioning block 4, the movable clamping assembly is in a contraction state, and after the positioning block 4 stops moving relative to the outer circular ring 1, the movable clamping assembly moves to an outer support state relative to the positioning block 4 under the action of centrifugal force; the movable clamping block assembly in an external support state is positioned between adjacent rotor guide bars and is in contact with the rotor guide bars; a second self-locking structure is arranged between the movable clamping block assembly and the rotor guide bar, so that the relative position of the movable clamping block assembly and the rotor guide bar is kept unchanged.
Referring to fig. 1 to 3 and fig. 7, specifically, in the present embodiment, two opposite side walls of the positioning block 4 are symmetrically provided with movable grooves 44, and a first guiding inclined surface 45 is disposed on an inner bottom wall of each movable groove 44; the movable clamping block assembly comprises two movable clamping blocks 5 which are respectively embedded in the movable grooves 44, and a second guide inclined surface 51 matched with the first guide inclined surface 45 is arranged on each movable clamping block 5; a first elastic piece 71 is arranged between the movable clamping block 5 and the positioning block 4, and the elastic force of the first elastic piece 71 enables the movable clamping block assembly to have a tendency of being kept in a contraction state; in a contraction state, the side wall of the movable clamping block 5 is concave or flush with the side wall of the positioning block 4, and in an outer support state, the side wall of the movable clamping block 5 protrudes out of the side wall of the positioning block 4.
Referring to fig. 1 to 3 and fig. 7, in the present embodiment, the first elastic member 71 is an elastic round sleeve, the end of the movable clamping block 5 and the inner end wall of the positioning block 4 are respectively provided with a first sinking groove 55 and a second sinking groove 47 which are matched with the elastic round sleeve, and the elastic round sleeve is fixedly connected with the movable clamping block 5 and the positioning block 4; specifically, the elastic round sleeve, the movable clamping block 5 and the positioning block 4 can be firmly bonded by strong glue to realize fixed connection; in the embodiment, a magnet (not shown in the drawing) is fixedly bonded in the first sinking groove 55, the magnet and the elastic round sleeve are fixed by gluing, the positioning block 4 is made of steel, and when the movable clamping block 5 moves a small distance, the magnet (not shown in the drawing) can quickly return to the original position by the magnetic force generated by the magnet (not shown in the drawing) on the end face of the second sinking groove 47 under the condition of no self-locking; in other alternative embodiments, the first elastic member 71 may also be a steel spring, which is not limited herein, but also needs to ensure the fixed connection of the two ends of the steel spring.
Referring to fig. 2, 3 and 7, a first limiting member matched with the movable clamping block 5 is arranged in the positioning block 4, specifically, the first limiting member in this embodiment includes two limiting screws 6, and a screw hole 46 matched with the limiting screw 6 is arranged in the first guiding inclined surface 45; a first movable hole 52 and a second movable hole 53 which are communicated are respectively formed in the movable clamping block 5, wherein the first movable hole 52 corresponds to the screw part of the limit screw 6, and the second movable hole 53 corresponds to the head part of the limit screw 6; the stepped hole formed by the first movable hole 52 and the second movable hole 53 is larger than the limit screw 6, so that the movable amount is provided for the movable clamping block 5; in a contraction state, the first elastic piece 71 applies an elastic force pointing to the axis of the movable clamping block 5, and the movable clamping block 5 is in contact with the limit screw 6; when the movable clamping block 5 moves relative to the positioning block 4 under the action of centrifugal force, the first guide inclined surface 45 is matched with the second guide inclined surface 51, so that the movable clamping block 5 axially moves while moving along the radial direction, the side wall of the movable clamping block 5 can protrude out of the side wall of the positioning block 4, and an external support state is realized; in other alternative embodiments, the first limiting member may also adopt other structural forms, and is not limited herein.
Referring to fig. 1 to 3 and fig. 6, a sliding cavity 31 matched with the positioning block 4 is formed in the inner ring 3, a second elastic member 72 is formed in the sliding cavity 31, and the positioning block 4 tends to move toward the axis due to the elastic force of the second elastic member 72; specifically, a limit plate 41 is arranged at the end of the positioning block 4, one end of the second elastic element 72 is in contact with the inner end wall of the sliding cavity 31, and the other end of the second elastic element is in contact with the limit plate 41, so that an elastic force pointing to the axis is applied to the positioning block 4; in this embodiment, one end of the sliding cavity 31 close to the axis is open, and the inner ring 3 is provided with a second limiting member for preventing the positioning block 4 from being disengaged from the sliding cavity 31; the second limiting member in this embodiment includes two limiting pins 34, and the end of the limiting pin 34 extends into the sliding cavity 31, so as to limit the limiting plate 41 and prevent it from being separated from the sliding cavity 31.
Referring to fig. 1 to 3 and fig. 6, a third through hole 32 communicated with the sliding cavity 31 is formed in the side wall of the inner circular ring 3, and the third through hole 32 is matched with the positioning block 4, that is, the positioning block 4 extends out of the inner circular ring 3 through the third through hole 32; in this embodiment, the third through hole 32 is a square hole, and the positioning block 4 is matched with the third through hole 32, so that the rotation of the positioning block 4 can be limited; of course, in other alternative embodiments, the third through hole 32 may also take other shapes, and is not limited herein; in the retracted state, the side walls of the movable clamping block 5 are recessed or flush with the side walls of the positioning block 4 in order to enable the movable clamping block 5 to pass through the third through hole 32.
Referring to fig. 1 to 4, in the present embodiment, the first self-locking structure includes an inclined self-locking structure, and specifically, the outer ring 1 is provided with a first through hole 11 matched with the positioning block 4; a first self-locking inclined plane 111 is arranged on one inner wall of the first through hole 11, and a second self-locking inclined plane 42 matched with the first self-locking inclined plane 111 is arranged on the positioning block 4; the positioning block 4 is inserted into the first through hole 11 after extending out under the action of centrifugal force, when the inner wall opposite to the first self-locking inclined surface 111 in the first through hole 11 is contacted with the positioning block 4, the positioning block 4 stops moving relative to the outer ring 1, at the moment, the first self-locking inclined surface 111 is matched with the second self-locking inclined surface 42, and the angle of the inclined surfaces is smaller than the friction angle, so that self-locking is achieved, and the relative position of the positioning block 4 and the outer ring 1 is kept unchanged even if the elastic force of the second elastic element 72 is applied after self-locking; in other alternative embodiments, the first self-locking structure may also take other structural forms, such as a spring ball, etc., without limitation.
Referring to fig. 7, the second self-locking structure in this embodiment includes an inclined surface self-locking structure, and specifically, a third self-locking inclined surface 54 that is in contact fit with the rotor guide bar is provided on the movable clamping block 5; the angle of the third self-locking inclined surface 54 is matched with the angle of the rotor guide bar, and after the third self-locking inclined surface and the rotor guide bar are contacted, the angle of the inclined surface is smaller than the friction angle, so that self-locking is achieved, and positioning and clamping of the rotor guide bar are achieved.
Referring to fig. 1, 4 and 6, in order to ensure that the positioning block 4 can be smoothly inserted into the first through hole 11, a positioning element for limiting the circumferential position of the outer ring 1 and the inner ring 3 is detachably arranged between the two rings; specifically, in the present embodiment, the positioning element is a positioning pin 8, a second through hole 12 matched with the positioning pin 8 is formed in the outer circular ring 1 between two adjacent first through holes 11, and a positioning hole 33 matched with the positioning pin 8 is formed in the side wall of the inner circular ring 3; the positioning pin 8 is in threaded fit with the positioning hole 33, and the positioning pin 8 is screwed into the positioning hole 33 after penetrating into the second through hole 12, so that the circumferential positions of the outer ring 1 and the inner ring 3 can be limited, and the positioning block 4 can be smoothly embedded into the first through hole 11.
Referring to fig. 1 to 5, the device in this embodiment further includes a self-locking release member, which can act on all the positioning blocks 4 at the same time, so that the positioning blocks 4 get rid of self-locking and move toward the axial center; specifically, in the present embodiment, the self-locking release element is a positioning sleeve 2 disposed outside the outer ring 1, and the inner sidewall of the positioning sleeve 2 and the outer sidewall of the outer ring 1 include a threaded fit; the inner side wall of the positioning sleeve 2 is provided with a conical surface 21 for pushing against the positioning block 4, and the positioning sleeve 2 is rotated, so that the radial thrust can be applied to the positioning block 4 through the conical surface 21, and the positioning block 4 can get rid of self locking and move towards the axis direction; in the embodiment, the conical surface 21 of the positioning sleeve 2 can act on all the positioning blocks 4 at the same time, so that the production efficiency can be improved; in the embodiment, the end part of the outer side wall of the outer circular ring 1 is provided with a convex ring 13, and the convex ring 13 is in threaded fit with the positioning sleeve 2; in the embodiment, the end part of the positioning block 4 is provided with the pushing conical surface 43 matched with the conical surface 21, and the pushing conical surface 43 is in contact fit with the conical surface 21 to facilitate force transmission; in the embodiment, the side wall of the positioning sleeve 2 is provided with a yielding hole 22 matched with the positioning pin 8, and the positioning pin 8 is taken out through the yielding hole 22; in other alternative embodiments, the self-locking release member may take other forms, and is not limited herein.
Example 2:
a friction welding process of a rotor bar using the deformation preventing device of example 1, referring to fig. 1 to 7, comprising the steps of:
s01, mounting the deformation prevention device on the rotor;
specifically, firstly, the outer ring 1 and the locating sleeve 2 are sleeved on the excircle of the rotor, the inner ring 3 is sleeved on the rotating shaft of the rotor, then the locating pin 8 is installed to limit the circumferential position of the outer ring 1 of the inner ring 3, at the moment, the inner ring 3 and the outer ring 1 are respectively located on the inner side and the outer side of the rotor conducting bar, and then the locating sleeve 2 and the convex ring 13 are screwed to prevent the looseness of the rotor conducting bar.
S02, controlling the rotor to rotate, enabling the positioning and clamping assembly to move under the action of centrifugal force, and positioning and clamping the rotor conducting bar;
specifically, the rotor rotates to drive the anti-deformation device to rotate, and under the action of centrifugal force, the positioning block 4 moves outwards to compress the second elastic piece 72 and is embedded into the first through hole 11; when the inner wall of the first through hole 11, which is opposite to the first self-locking inclined surface 111, contacts the positioning block 4, the positioning block 4 stops moving relative to the outer ring 1, and at the moment, the first self-locking inclined surface 111 is matched with the second self-locking inclined surface 42, and the angle of the inclined surfaces is smaller than the friction angle, so that self-locking is achieved, and the relative position of the positioning block 4 and the outer ring 1 is kept unchanged even if the positioning block 4 is subjected to the elastic force of the second elastic element 72 after the rotor stops rotating, namely the positioning block 4 cannot move towards the axis direction; when the movable clamping block 5 is in a contracted state, the positioning block 4 drives the movable clamping block 5 to enter the middle of the two rotor guide bars, and the positioning block 4 is not contacted with the rotor guide bars in the embodiment; limited by the first elastic member 71, specifically, the elastic force of the first elastic member 71 is greater than the elastic force of the second elastic member 72, after the positioning block 4 stops moving, the movable clamping block 5 moves outwards under the action of centrifugal force, and changes from a contraction state to an external support state, the movable clamping block 5 in the external support state contacts with the rotor guide bar and performs positioning and clamping, and meanwhile, self-locking is formed between the movable clamping block 5 and the rotor guide bar, so that the movable clamping block 5 is kept immovable relative to the rotor guide bar.
S03, controlling the rotor to be static, then controlling the end ring to rotate at a high speed, and welding the end ring and the rotor guide bar together after contacting with each other, wherein the anti-deformation device can prevent the rotor guide bar from displacing and deforming in the friction welding process;
specifically, the rotor is controlled to be static, the end ring clamped by the friction welding machine rotates at a high speed and slowly moves towards the end of the rotor guide bar, when the end ring contacts the end face of the rotor guide bar, the rotor guide bar and the end ring rotate at a relatively high speed and generate friction to generate great heat, the contact surface is heated to a certain welding temperature, certain upsetting pressure is applied, a certain amount of plastic deformation is generated on the metal of two welding pieces, and therefore the two welding pieces are firmly welded together; in the friction welding process, the anti-deformation device positions and clamps the rotor conducting bar, so that displacement and deformation are prevented.
S04, detaching the deformation prevention device from the rotor;
specifically, after the welding is completed, the positioning sleeve 2 is rotated, so that the conical surface 21 of the positioning sleeve 2 is in contact with the pushing conical surface 43 of the positioning block 4, the positioning block 4 is pushed to move towards the axis direction, and the movable clamping block 5 is driven to move towards the axis; when the movable clamping block 5 is separated from contact with the rotor guide bar, the movable clamping block returns to the position of the contraction state under the elastic tension of the first elastic piece 71; the positioning block 4 also returns to the initial position under the action of the elastic force of the second elastic element 72; then, the positioning sleeve 2 is rotated to enable the abdicating hole 22 to be opposite to the positioning pin 8, the positioning pin 8 is taken down, and then the outer circular ring 1, the positioning sleeve 2 and the inner circular ring 3 can be taken down.
Claims (10)
1. The utility model provides a rotor conducting bar friction weld anti-deformation device which characterized in that includes:
an outer ring;
an inner circular ring;
the positioning piece is detachably arranged between the outer ring and the inner ring and used for limiting the circumferential positions of the outer ring and the inner ring;
the positioning and clamping components comprise positioning blocks and movable clamping block components arranged on the positioning blocks, and the movable clamping block components comprise a contraction state and an outer support state;
after the device rotates, the positioning block moves to be matched with the outer circular ring under the action of centrifugal force; a first self-locking structure is arranged between the positioning block and the outer ring, so that the relative position of the positioning block and the outer ring is kept unchanged;
in the moving process of the positioning block, the movable clamping assembly is in a contraction state, and after the positioning block stops moving relative to the outer ring, the movable clamping assembly moves to an outer support state relative to the positioning block under the action of centrifugal force;
the movable clamping block assembly in an external support state is positioned between adjacent rotor guide bars and is in contact with the rotor guide bars; and a second self-locking structure is arranged between the movable clamping block assembly and the rotor guide bar, so that the relative position of the movable clamping block assembly and the rotor guide bar is kept unchanged.
2. The rotor conducting bar friction welding anti-deformation device according to claim 1, characterized in that: two opposite side walls of the positioning block are symmetrically provided with movable grooves, and the bottom wall in each movable groove is provided with a first guide inclined plane;
the movable clamping block assembly comprises two movable clamping blocks which are respectively embedded in the movable grooves, and a second guide inclined plane matched with the first guide inclined plane is arranged on each movable clamping block;
a first elastic piece is arranged between the movable clamping block and the positioning block, and the elastic force of the first elastic piece enables the movable clamping block assembly to have the tendency of being kept in a contraction state;
in a contraction state, the side wall of the movable clamping block is concave or flush with the side wall of the positioning block, and in an external support state, the side wall of the movable clamping block protrudes out of the side wall of the positioning block.
3. The rotor conducting bar friction welding anti-deformation device according to claim 2, characterized in that: and a first limiting part matched with the movable clamping block is arranged in the positioning block.
4. The rotor conducting bar friction welding anti-deformation device according to claim 1, characterized in that: the inner circular ring is internally provided with a sliding cavity matched with the positioning block, a second elastic piece is arranged in the sliding cavity, and the positioning block tends to move towards the axis due to the elastic force of the second elastic piece.
5. The rotor conducting bar friction welding anti-deformation device according to claim 4, characterized in that: and a second limiting piece for preventing the positioning block from being separated from the sliding cavity is arranged on the inner circular ring.
6. The rotor conducting bar friction welding anti-deformation device according to claim 1, characterized in that: the first self-locking structure comprises an inclined surface self-locking structure, and a first through hole matched with the positioning block is formed in the outer circular ring; a first self-locking inclined plane is arranged on one inner wall of the first through hole, and a second self-locking inclined plane matched with the first self-locking inclined plane is arranged on the positioning block.
7. The rotor conducting bar friction welding anti-deformation device according to claim 1, characterized in that: the second self-locking structure comprises an inclined surface self-locking structure, and a third self-locking inclined surface in contact fit with the rotor guide bar is arranged on the movable clamping block assembly.
8. The rotor conducting bar friction welding anti-deformation device according to claim 1, characterized in that: the device also comprises a self-locking release part, wherein the self-locking release part can act on all the positioning blocks simultaneously, so that the positioning blocks get rid of self-locking and move towards the axis direction.
9. The rotor conducting bar friction welding anti-deformation device according to claim 8, characterized in that: the self-locking release part is a positioning sleeve arranged on the outer side of the outer ring, and the inner side wall of the positioning sleeve is in threaded fit with the outer side wall of the outer ring; the inner side wall of the positioning sleeve is provided with a conical surface used for pushing the positioning block.
10. A friction welding process of a rotor bar using the deformation preventing device according to any one of claims 1 to 9, comprising the steps of:
s01, mounting the deformation prevention device on the rotor;
s02, controlling the rotor to rotate, enabling the positioning and clamping assembly to move under the action of centrifugal force, and positioning and clamping the rotor conducting bar;
s03, controlling the rotor to be static, then controlling the end ring to rotate at a high speed, and welding the end ring and the rotor guide bar together after contacting with each other, wherein the anti-deformation device can prevent the rotor guide bar from displacing and deforming in the friction welding process;
and S04, detaching the deformation preventing device from the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110538922.8A CN113193710B (en) | 2021-05-18 | 2021-05-18 | Anti-deformation device and method for friction welding of rotor conducting bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110538922.8A CN113193710B (en) | 2021-05-18 | 2021-05-18 | Anti-deformation device and method for friction welding of rotor conducting bar |
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| CN113193710A true CN113193710A (en) | 2021-07-30 |
| CN113193710B CN113193710B (en) | 2022-07-26 |
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