CN109524230B - Control method and device for precise positioning of silicon steel sheet of transformer iron core - Google Patents
Control method and device for precise positioning of silicon steel sheet of transformer iron core Download PDFInfo
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- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
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Abstract
A control method and a device for precise positioning of silicon steel sheets of a transformer iron core are characterized in that 5 sets of numerical control cross sliding tables are mounted on a positioning platform, each set of numerical control cross sliding table comprises an upper layer table and a lower layer table, and each layer table comprises a servo motor, a driving screw rod, a sliding block and a guide rail; the device has the following advantages: 1. the positioning platform mechanism is suitable for wide transformer capacity range: is 50KVA to 2500 KVA. 2. The positioning platform mechanism has high flexibility. 3. This positioning platform mechanism transformer core silicon steel sheet application scope is wide: the width of the sheet can be changed within the range of 40 mm-300 mm, and the length of the sheet can be changed within the range of 350 mm-1700 mm. 4. This positioning platform mechanism can carry out image recognition to the center pillar, and the selection piece mistake is automatic to be shut down, and production process automation has guaranteed transformer core's lamination quality and efficiency effectively, prevents that the lamination mistake from resulting in artifical the dismantlement, realizes continuous, stable production. 5. The positioning platform mechanism is reliable in structure, mature in technology and convenient to maintain.
Description
Technical Field
The invention relates to the technical field of transformer iron core silicon steel sheet stacking, in particular to a control method and a device for precise positioning of transformer iron core silicon steel sheets.
Background
The existing transformer core lamination mostly adopts a manual lamination and a one-by-one lamination mode, the lamination mode has very low efficiency, poor manual positioning lamination precision and high manual lamination selection error rate, so that the lamination is repeated, a large amount of time cost and labor cost are consumed, and the wide application is difficult. Therefore, an automatic transformer core lamination device is urgently needed, which can realize automatic positioning and simultaneous positioning of the silicon steel sheets of the transformer core, improve the positioning precision of the silicon steel sheets of the transformer core and ensure the quality and the efficiency of transformer core lamination.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides a control method and a control device for precise positioning of silicon steel sheets of a transformer core, which are used for automatic positioning and simultaneous positioning of the silicon steel sheets of the transformer core, and aims to solve the problems in the prior art, improve the positioning precision of the silicon steel sheets of the transformer core and ensure the quality and the efficiency of transformer core lamination.
The technical scheme is as follows:
a control device for precisely positioning silicon steel sheets of a transformer iron core,
the numerical control cross sliding tables are mounted on the positioning platform, each numerical control cross sliding table comprises an upper layer table and a lower layer table, and each layer table comprises a servo motor, a driving screw rod, a sliding block and a guide rail; the servo motor is connected with a driving lead screw, the lead screw is connected with a sliding block, and the guide rail is arranged on the sliding block;
the middle column corresponds to a first numerical control cross sliding table, a screw rod is driven by a servo motor to rotate, the screw rod rotates to drive a sliding block to move through nut connection, the sliding block drives a guide rail to move through clamping groove connection, and the middle column is accurately positioned on the guide rail of the upper layer table;
the left column corresponds to a second numerical control cross sliding table; the right column corresponds to the third numerical control cross sliding table; the upper yoke corresponds to the fourth numerical control cross sliding table, the lower yoke corresponds to the fifth numerical control cross sliding table, each numerical control cross sliding table is driven by a servo motor to rotate by a lead screw, the lead screw rotates to drive a sliding block to move through nut connection, the sliding block drives a guide rail to move through clamping groove connection, and the left column, the right column, the upper yoke and the lower yoke are respectively positioned on respective guide rails;
and meanwhile, the left column, the right column, the upper yoke and the lower yoke are limited by the baffle plate, so that the left column, the right column, the upper yoke and the lower yoke are accurately positioned on the guide rail.
By utilizing the control method implemented by the control device for the precise positioning of the transformer iron core silicon steel sheets, a positioning algorithm is designed in a control system of an industrial personal computer, and after parameters are input, the system automatically generates standard positions of 5 transformer iron core silicon steel sheets, wherein the 5 transformer iron core silicon steel sheets comprise a left column, a middle column, a right column, an upper yoke and a lower yoke;
the control system precisely positions 5 transformer iron core silicon steel sheets, namely a left column, a middle column, a right column, an upper yoke and a lower yoke, through each numerical control cross sliding table on the positioning platform;
an image recognition mechanism is arranged at a corresponding position of the center pillar, and the position of the image recognition mechanism meets the requirement that a real-time image of the inclination angle alpha of the center pillar can be shot; the inclination angle α is the angle corresponding to the top and bottom of the center pillar in fig. 2.
The image recognition mechanism interacts with an industrial personal computer, a camera in the image recognition mechanism shoots the center pillar to obtain a real-time image, the industrial personal computer is used for signal acquisition and signal processing, and the real-time image is compared with a standard punching sheet image in an image database of the industrial personal computer by the inclination angle alpha of the center pillar, so that whether the center pillar is correctly selected or not is judged; the center column is correctly selected, and 5 transformer iron core silicon steel sheets finish precise positioning; selecting the middle column with errors, automatically stopping the positioning platform, manually intervening, re-selecting the middle column and re-positioning; after the repositioning, 5 sets of numerical control cross sliding tables are used for precisely positioning the 5 transformer iron core silicon steel sheets.
The positioning algorithm designed in the control system is as follows: establishing a rectangular coordinate system by taking a connecting line of the alpha top points of the inclination angles of the center pillars in the database as a center line, taking the middle point of the center line as an original point O, taking the direction of the center line as a Y direction and taking the direction vertical to the center line as an X direction, determining the window width a and the window height b of the laminated sheets, and determining the length and the width of each grade of the laminated sheets;
the window width a is the linear distance from the left side of the middle column to the right side of the left column or the linear distance from the right side of the middle column to the left side of the right column;
the window height b: the linear distance from the lower edge of the upper yoke to the upper edge of the lower yoke.
And inputting the inclination angle parameter alpha of the center pillar in the control system, and automatically generating the standard positions of 5 transformer iron core silicon steel sheets, the grade number of the transformer iron core silicon steel sheets, the number of each grade of sheet and the width of each grade of sheet by the control system.
The positioning platform sends out a detection signal, and the 5 sets of numerical control cross sliding tables simultaneously position 5 transformer iron core silicon steel sheets, namely the left column, the middle column, the right column, the upper yoke and the lower yoke.
A control system driver sends an instruction to drive a servo motor of the lower-layer platform, the servo motor drives a lead screw to rotate forwards or reversely and drives a lower-layer slide block to move through nut connection, the lower-layer slide block drives a center post to move oppositely along the +/-X direction through clamping groove connection, the +/-X direction position of the center post is adjusted, and the +/-X direction of the center post is precisely positioned, so that the center line of a transformer iron core silicon steel sheet in the Y direction of the center post is superposed with the center line of the center post of the positioning platform; the control system driver sends the servo motor of instruction drive upper strata, and the servo motor drive lead screw rotation on upper strata drives the motion of upper slider through the nut connection, and the slider passes through the draw-in groove to be connected along upper guide rail with + Y to the motion, and the adjustment center pillar 3+ Y direction position carries out precision positioning to center pillar 3+ Y direction, makes the central point of transformer core silicon steel sheet center pillar coincide with the initial point O of locating platform center pillar.
The left column, the right column, the upper yoke and the lower yoke are blocked by an upper baffle of the positioning platform to position in the + X direction or the-X direction; a control system driver sends an instruction to drive a servo motor of the lower layer table, the servo motor drives a lead screw to rotate and drives a sliding block to move through nut connection, the sliding block drives a guide rail to move along the-X direction or the + X direction through clamping groove connection, and precise positioning is carried out on the left column, the right column, the upper yoke and the lower yoke in the-X direction or the + X direction; the upper layer platform servo motor drives the screw rod to rotate and drives the sliding block to move through nut connection, the sliding block drives the guide rail to move along the + Y direction through clamping groove connection, and the + Y direction of the left column, the right column, the upper yoke and the lower yoke is precisely positioned.
The advantages and effects are as follows: the invention discloses a control method and a device for precise positioning of a transformer iron core silicon steel sheet, wherein a positioning algorithm is designed in a control system, a control system driver sends an instruction to drive a servo motor, the servo motor drives a lead screw to rotate, the lead screw rotates and drives a slide block to move through nut connection, the slide block drives a guide rail to move through slot connection, precise positioning of the transformer iron core silicon steel sheet in X direction and Y direction is realized, the positioning precision is obviously improved, and the precision can be changed within the range of 0.02 mm-0.04 mm. The control method and the device for the precise positioning of the silicon steel sheet of the transformer iron core have the following advantages that:
1. the positioning platform mechanism is suitable for wide transformer capacity range: is 50KVA to 2500 KVA.
2. The positioning platform mechanism is high in flexibility, and can realize accurate positioning of 3-level, 5-level and 7-level transformer iron core silicon steel sheets.
3. This positioning platform mechanism transformer core silicon steel sheet application scope is wide: the width of the sheet can be changed within the range of 40 mm-300 mm, and the length of the sheet can be changed within the range of 350 mm-1700 mm.
4. This positioning platform mechanism can carry out image recognition to the center pillar, and the selection piece mistake is automatic to be shut down, and production process automation has guaranteed transformer core's lamination quality and efficiency effectively, prevents that the lamination mistake from resulting in artifical the dismantlement, realizes continuous, stable production.
5. The positioning platform mechanism is reliable in structure, mature in technology and convenient to maintain.
Drawings
FIG. 1: a control method and device for precise positioning of silicon steel sheets of a transformer iron core are disclosed, wherein a schematic diagram of a planar structure of a positioning platform mechanism is provided;
FIG. 2 is a schematic diagram of a positioning algorithm of silicon steel sheets (left column, center column, right column, upper yoke and lower yoke) of a 5-sheet transformer iron core;
FIG. 3: a schematic plane structure diagram of a center pillar positioning control method;
FIG. 4: a schematic plane structure diagram of a positioning control method of the left column, the right column, the upper yoke and the lower yoke; the left side of fig. 4 is a schematic view of positioning the upper and lower yokes, and the right side of fig. 4 is a schematic view of positioning the left and right columns.
Detailed Description
The utility model provides a transformer core silicon steel sheet precision positioning's controlling means which characterized in that:
5 sets of numerical control cross sliding tables are installed on the positioning platform 1, each set of numerical control cross sliding table comprises an upper layer table and a lower layer table, and each layer table comprises a servo motor 8, a driving screw 9, a sliding block 10 and a guide rail 11; the servo motor 8 is connected with a driving screw rod 9, the screw rod 9 is connected with a sliding block 10, and a guide rail 11 is arranged on the sliding block 10 (the cross sliding table belongs to the prior art; namely, the servo motor 8 of a lower layer table (an X-direction sliding table) is connected with the lower layer driving screw rod 9, the lower layer driving screw rod 9 is connected with the lower layer sliding block 10, and the sliding block 10 is driven to move along the guide rail 11 through the rotation of the driving screw rod 9;
the middle column 3 corresponds to a first numerical control cross sliding table A, a screw rod 9 is driven to rotate by a servo motor 8, the screw rod 9 rotates to drive a sliding block 10 to move through nut connection, the sliding block 10 drives a guide rail 11 to move through clamping groove connection, and the middle column 3 is accurately positioned on the guide rail 11 of the upper-layer table;
the left column 2 corresponds to a second numerical control cross sliding table B; the right column 4 corresponds to a third numerical control cross sliding table C; the upper yoke 5 corresponds to a fourth numerical control cross sliding table D, the lower yoke 6 corresponds to a fifth numerical control cross sliding table (E), each numerical control cross sliding table is driven by a servo motor 8 to rotate by a lead screw 9, the lead screw 9 rotates and drives a slide block 10 to move through nut connection, the slide block 10 drives a guide rail 11 to move through slot connection, and the left column 2, the right column 4, the upper yoke 5 and the lower yoke 6 are respectively positioned on the respective guide rails 11;
and the left column 2, the right column 4, the upper yoke 5 and the lower yoke 6 are limited by the baffle 12 (as shown in fig. 4), so that the left column 2, the right column 4, the upper yoke 5 and the lower yoke 6 are accurately positioned on the guide rail 11.
The control method implemented by the control device for precisely positioning the silicon steel sheets of the transformer core is characterized by comprising the following steps of: designing a positioning algorithm in a control system of an industrial personal computer, inputting parameters, and then automatically generating standard positions of 5 transformer iron core silicon steel sheets by the system, wherein the 5 transformer iron core silicon steel sheets comprise a left column 2, a middle column 3, a right column 4, an upper yoke 5 and a lower yoke 6;
the control system precisely positions 5 transformer iron core silicon steel sheets, namely a left column 2, a middle column 3, a right column 4, an upper yoke 5 and a lower yoke 6, through each numerical control cross sliding table on the positioning platform 1;
an image recognition mechanism 7 is arranged at a corresponding position of the center pillar 3, and the position of the image recognition mechanism 7 is enough to shoot a real-time image of the inclination angle alpha of the center pillar 3;
the image recognition mechanism 7 interacts with an industrial personal computer, a camera in the image recognition mechanism 7 shoots the center post 3 to obtain a real-time image, the industrial personal computer is used for signal acquisition and signal processing, and the real-time image is compared with a standard punching sheet image in an image database of the industrial personal computer by the inclination angle alpha of the center post 3, so that whether the selection of the center post 3 is correct or not is judged; the selection of the middle column 3 is correct, and the precise positioning of 5 transformer iron core silicon steel sheets is completed; when the selection of the middle column 3 is wrong, the positioning platform 1 is automatically stopped, manually intervened, and the selection and the positioning are carried out again; after the repositioning, 5 sets of numerical control cross sliding tables are used for precisely positioning the 5 transformer iron core silicon steel sheets.
The positioning algorithm designed in the control system is as follows: establishing a rectangular coordinate system by taking a connecting line of the alpha top points of the inclination angles of the center pillars in the database as a center line, taking the middle point of the center line as an original point O, taking the direction of the center line as a Y direction and taking the direction vertical to the center line as an X direction, determining the window width a and the window height b of the lamination, and determining the length and the width of each stage of the lamination;
window width a (as shown in fig. 2) the linear distance from the left side of the center pillar 3 to the right side of the left pillar 2 or the linear distance from the right side of the center pillar 3 to the left side of the right pillar 4;
the window height b: (as shown in fig. 2) the linear distance from the lower edge of the upper yoke piece 5 to the upper edge of the lower yoke piece 6.
The inclination angle parameter alpha of the center post 3 is input into the control system, and the control system automatically generates the standard positions of 5 transformer iron core silicon steel sheets, the number of the transformer iron core silicon steel sheets, and the width of each level of the transformer iron core silicon steel sheets.
The positioning platform 1 sends out a detection signal, and the 5 sets of numerical control cross sliding tables simultaneously position 5 transformer core silicon steel sheets, namely the left column 2, the middle column 3, the right column 4, the upper yoke 5 and the lower yoke 6 respectively.
A control system driver sends an instruction to drive a servo motor 8 of the lower-layer platform, the servo motor 8 drives a lead screw 9 to rotate forwards or backwards to drive a lower-layer slide block 10 to move through nut connection, the lower-layer slide block 10 drives a center post 3 to move in the +/-X direction through clamping groove connection, the +/-X direction position of the center post 3 is adjusted, the +/-X direction of the center post 3 is precisely positioned, and the center line of a transformer core silicon steel sheet in the Y direction of the center post 3 is enabled to coincide with the center line of the center post 3 of the positioning platform 1; the control system driver sends the servo motor 8 of instruction drive upper strata, and the servo motor 8 drive lead screw 9 rotation on upper strata drives upper slider 10 motion through the nut connection, and slider 10 passes through the draw-in groove connection and moves with + Y direction along upper guide rail 11, and the adjustment center pillar 3+ Y direction position carries out precision positioning to center pillar 3+ Y direction, makes the central point of transformer core silicon steel sheet center pillar 3 coincide with the initial point O of 1 center pillar 3 of locating platform.
The left column 2, the right column 4, the upper yoke 5 and the lower yoke 6 are blocked by an upper baffle 12 of the positioning platform 1 to position in the + X direction or the-X direction; a control system driver sends an instruction to drive a servo motor 8 of a lower layer table, the servo motor 8 drives a lead screw 9 to rotate and drives a sliding block 10 to move through nut connection, the sliding block 10 drives a guide rail 11 to move along the-X direction or the + X direction through clamping groove connection, and precise positioning is carried out on the left column 2, the right column 4, the upper yoke 5 and the lower yoke 6 in the-X direction or the + X direction; the upper-layer table servo motor 8 drives the screw rod 9 to rotate and drives the sliding block 10 to move through nut connection, the sliding block 10 drives the guide rail 11 to move along the + Y direction through clamping groove connection, and the + Y direction of the left column 2, the right column 4, the upper yoke 5 and the lower yoke 6 is precisely positioned.
The invention is described in further detail below with reference to the accompanying drawings:
a control method and apparatus of the accurate positioning of the silicon steel sheet of transformer core, design a positioning algorithm in the control system, the system automatically generates the standard position of 5 pieces of transformer core silicon steel sheets (left column 2, center pillar 3, right column 4, upper yoke 5 and lower yoke 6) after inputting the parameter; as shown in fig. 1, a positioning platform 1 precisely positions 5 transformer core silicon steel sheets (a left column 2, a middle column 3, a right column 4, an upper yoke 5 and a lower yoke 6); the image recognition mechanism 7 interacts with an industrial personal computer, the camera shoots the center post 3 to obtain a real-time image, the industrial personal computer performs signal acquisition and signal processing, and the real-time image and a standard punching sheet image in an image database are subjected to center post 3 inclination angle alpha comparison, so that whether the center post 3 is correctly selected or not is judged. The selection of the middle column 3 is correct, and the precise positioning of 5 transformer iron core silicon steel sheets is completed; and (3) selecting the film wrongly by the middle column, automatically stopping the positioning platform 1, manually intervening, re-selecting the film and re-positioning.
Furthermore, the control method and the device for the precise positioning of the silicon steel sheet of the transformer iron core comprise the following steps:
1. designing a positioning algorithm in a control system: establishing a rectangular coordinate system by taking a central column inclination angle vertex connecting line in a database as a central line, taking a central point of the central line as an original point O, taking the direction of the central line as a Y direction and taking the direction vertical to the central line as an X direction, determining the window width a and the window height b of the lamination, and determining the length and the width of each stage of the lamination; as shown in fig. 2.
The window width a is the linear distance from the left side of the center pillar 3 to the right side of the left pillar 2 (or the linear distance from the right side of the center pillar 3 to the left side of the right pillar 4).
The window height b: the linear distance from the lower edge of the upper yoke piece 5 to the upper edge of the lower yoke piece 6.
2. Inputting the inclination angle parameter of the center column 3 in the control system, and automatically generating the standard positions of 5 transformer iron core silicon steel sheets (the left column 2, the center column 3, the right column 4, the upper yoke 5 and the lower yoke 6) and the grade number, the number of each grade of sheet and the width of each grade of sheet by the control system;
3. the image recognition mechanism 7 interacts with an industrial personal computer, the camera shoots the center pillar 3 to obtain a real-time image, the industrial personal computer performs signal acquisition and signal processing, and the real-time image and a standard punching image in an image database can be compared with the inclination angle of the center pillar, so that whether the selection of the center pillar 3 is correct or not is judged.
The middle column 3 is correctly selected, and 5 sets of numerical control cross sliding tables are used for precisely positioning 5 transformer iron core silicon steel sheets (a left column 2, the middle column 3, a right column 4, an upper yoke 5 and a lower yoke 6);
and (3) the middle column 3 has an error in selecting the film, the positioning platform 1 is automatically stopped, manually intervenes, and is repositioned after the film is replaced. After the repositioning, 5 sets of numerical control cross sliding tables are used for precisely positioning 5 transformer iron core silicon steel sheets (the left column 2, the middle column 3, the right column 4, the upper yoke 5 and the lower yoke 6).
4. The positioning platform 1 sends out a detection signal, and 5 sets of numerical control cross sliding tables simultaneously position 5 transformer iron core silicon steel sheets (a left column 2, a middle column 3, a right column 4, an upper yoke 5 and a lower yoke 6) respectively;
as shown in fig. 3, a control system driver sends an instruction to drive a servo motor 8, the servo motor 8 drives a lead screw 9 to rotate forward or reversely to drive a slider 10 to move through nut connection, the slider 10 is connected through a clamping groove to drive a guide rail 11 to move along the ± X direction in opposite directions, the positions of the center pillars 3 in the ± X direction are adjusted, the center pillars 3 in the ± X direction are precisely positioned, and the center line of the transformer core silicon steel sheet in the Y direction of the center pillar 3 is coincided with the center line of the center pillar 3 in the positioning platform 1; the control system driver sends an instruction to drive the servo motor 8, the servo motor 8 drives the screw rod 9 to rotate and drives the upper layer slide block 10 to move through nut connection, the upper layer slide block 10 drives the guide rail 11 to move along the + Y direction through clamping groove connection, the position of the middle column 3+ Y direction is adjusted, the middle column 3+ Y direction is precisely positioned, and the center point of the middle column 3 of the transformer core silicon steel sheet is coincided with the original point O of the middle column 3 of the positioning platform 1.
As shown in fig. 4, the left column 2, the right column 4, the upper yoke 5 and the lower yoke 6 are blocked by the upper baffle 12 of the positioning platform 1 to position in the + X direction or the-X direction; a control system driver sends an instruction to drive a servo motor 8, the servo motor 8 drives a lead screw 9 to rotate and drives a sliding block 10 to move through nut connection, the sliding block 10 drives a guide rail 11 to move along the-X direction or the + X direction through clamping groove connection, and the left column 2, the right column 4, the upper yoke 5 and the lower yoke 6 are precisely positioned along the-X direction or the + X direction; the servo motor 8 drives the screw rod 9 to rotate and drives the sliding block 10 to move through nut connection, the sliding block 10 drives the guide rail 11 to move along the + Y direction through clamping groove connection, and the + Y direction of the left column 2, the right column 4, the upper yoke 5 and the lower yoke 6 is precisely positioned.
Claims (4)
1. A control method implemented by a control device for precisely positioning silicon steel sheets of a transformer core is characterized by comprising the following steps of: the method is implemented by the following devices:
5 sets of numerical control cross sliding tables are installed on the positioning platform (1), each set of numerical control cross sliding table comprises an upper layer table and a lower layer table, and each layer table comprises a servo motor (8), a driving screw rod (9), a sliding block (10) and a guide rail (11); the servo motor (8) is connected with a driving lead screw (9), the lead screw (9) is connected with a sliding block (10), and a guide rail (11) is arranged on the sliding block (10);
the middle column (3) corresponds to a first numerical control cross sliding table (A); the left column (2) corresponds to a second numerical control cross sliding table (B); the right column (4) corresponds to the third numerical control cross sliding table (C); the upper yoke (5) corresponds to a fourth numerical control cross sliding table (D), the lower yoke (6) corresponds to a fifth numerical control cross sliding table (E), each numerical control cross sliding table is driven by a servo motor (8) to rotate by a lead screw (9), the lead screw (9) rotates to drive a sliding block (10) to move, the sliding block (10) drives a guide rail (11) to move, and the left column (2), the right column (4), the upper yoke (5) and the lower yoke (6) are positioned on the respective guide rails (11);
meanwhile, the baffle (12) limits the left column (2), the right column (4), the upper yoke (5) and the lower yoke (6) so that the left column (2), the right column (4), the upper yoke (5) and the lower yoke (6) are accurately positioned on the guide rail (11);
the method comprises the following steps: designing a positioning algorithm in a control system of an industrial personal computer, inputting parameters and then automatically generating standard positions of 5 transformer iron core silicon steel sheets by the system, wherein the 5 transformer iron core silicon steel sheets comprise a left column (2), a middle column (3), a right column (4), an upper yoke (5) and a lower yoke (6);
the control system precisely positions 5 transformer iron core silicon steel sheets, namely a left column (2), a middle column (3), a right column (4), an upper yoke (5) and a lower yoke (6), through each numerical control cross sliding table on the positioning platform (1);
an image recognition mechanism (7) is arranged at a corresponding position of the center pillar (3), and the position of the image recognition mechanism (7) is enough to shoot a real-time image of the inclination angle alpha of the center pillar (3);
the image recognition mechanism (7) interacts with an industrial personal computer, a camera in the image recognition mechanism (7) shoots the center pillar (3) to obtain a real-time image, the industrial personal computer is used for signal acquisition and signal processing, and the real-time image is compared with a standard punching sheet image in an image database of the industrial personal computer by the inclination angle alpha of the center pillar (3), so that whether the selection of the center pillar (3) is correct or not is judged; the sheet selection of the center column (3) is correct, and the precise positioning of 5 transformer iron core silicon steel sheets is completed; the middle column (3) has wrong film selection, the positioning platform (1) is automatically stopped, manual intervention is carried out, and film selection and repositioning are carried out again; after the repositioning, 5 sets of numerical control cross sliding tables are used for precisely positioning 5 transformer iron core silicon steel sheets;
the positioning algorithm designed in the control system is as follows: establishing a rectangular coordinate system by taking a connecting line of the alpha top points of the inclination angles of the center pillars in the database as a center line, taking the middle point of the center line as an original point O, taking the direction of the center line as a Y direction and taking the direction vertical to the center line as an X direction, determining the window width a and the window height b of the laminated sheets, and determining the length and the width of each grade of the laminated sheets;
window width a: the linear distance from the left side of the middle column (3) to the right side of the left column (2) or the linear distance from the right side of the middle column (3) to the left side of the right column (4);
the window height b: the linear distance from the lower edge of the upper yoke (5) to the upper edge of the lower yoke (6);
the positioning platform (1) sends out a detection signal, and the 5 sets of numerical control cross sliding tables simultaneously position 5 transformer core silicon steel sheets, namely the left column (2), the middle column (3), the right column (4), the upper yoke (5) and the lower yoke (6) respectively.
2. The control method according to claim 1, characterized in that: the inclination angle parameter alpha of the center post (3) is input into the control system, and the control system automatically generates the standard positions of 5 transformer iron core silicon steel sheets, the number of the transformer iron core silicon steel sheets and the width of each transformer iron core silicon steel sheet.
3. The control method according to claim 1, characterized in that: a control system driver sends an instruction to drive a servo motor (8) of the lower-layer platform, the servo motor (8) drives a lead screw (9) to rotate forwards or backwards to drive a lower-layer sliding block (10) to move, the lower-layer sliding block (10) drives a center column (3) to move in the +/-X direction in opposite directions, the position of the center column (3) in the +/-X direction is adjusted, the center column (3) in the +/-X direction is precisely positioned, and the center line of a transformer core silicon steel sheet in the Y direction of the center column (3) is enabled to coincide with the center line of the center column (3) of the positioning platform (1; the control system driver sends out servo motor (8) of instruction drive upper strata, servo motor (8) on upper strata drive lead screw (9) rotation and drive upper slider (10) motion, slider (10) are along upper guide rail (11) with + Y direction motion, adjust center pillar (3) + Y direction position, carry out precision positioning to center pillar (3) + Y direction, make the central point of transformer core silicon steel sheet center pillar (3) coincide with the original point O of locating platform (1) center pillar (3).
4. The control method according to claim 1, characterized in that: the left column (2), the right column (4), the upper yoke (5) and the lower yoke (6) are blocked by an upper baffle (12) of the positioning platform (1) to position in the + X direction or the-X direction; a control system driver sends an instruction to drive a servo motor (8) of a lower layer table, the servo motor (8) drives a lead screw (9) to rotate and drives a sliding block (10) to move through nut connection, the sliding block (10) is connected through a clamping groove to drive a guide rail (11) to move along the-X direction or the + X direction, and the left column (2), the right column (4), the upper yoke (5) and the lower yoke (6) are precisely positioned along the-X direction or the + X direction; an upper-layer table servo motor (8) drives a lead screw (9) to rotate and drives a sliding block (10) to move through nut connection, the sliding block (10) drives a guide rail (11) to move along the direction of + Y through clamping groove connection, and the + Y direction of a left column (2), a right column (4), an upper yoke (5) and a lower yoke (6) is precisely positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811438697.5A CN109524230B (en) | 2018-11-28 | 2018-11-28 | Control method and device for precise positioning of silicon steel sheet of transformer iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811438697.5A CN109524230B (en) | 2018-11-28 | 2018-11-28 | Control method and device for precise positioning of silicon steel sheet of transformer iron core |
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| CN110394749A (en) * | 2019-07-30 | 2019-11-01 | 南通思瑞机器制造有限公司 | Transformer silicon steel sheet closed assembly accurate positioning device |
| CN110491666B (en) * | 2019-08-28 | 2024-04-12 | 中节能西安启源机电装备有限公司 | Step-by-step positioner of automatic stack production line center pillar silicon steel sheet of transformer iron core |
| CN111710517B (en) * | 2020-06-23 | 2021-11-12 | 中节能西安启源机电装备有限公司 | Transformer core column slicing method |
| CN112397296A (en) * | 2020-11-09 | 2021-02-23 | 夏保友 | Iron core assembling and centering device for production of high-capacity transformer |
| CN116168944B (en) * | 2023-04-25 | 2023-08-01 | 河北北威保互电气设备有限公司 | Transformer core positioning and assembling device |
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| CN201689767U (en) * | 2010-04-15 | 2010-12-29 | 广东广特电气有限公司 | Criss-cross seven-step seamed iron core used for dry-type transformer |
| CN203931787U (en) * | 2013-10-18 | 2014-11-05 | 吕志强 | For the automatic laminating device of transformer E word iron core |
| CN104810144B (en) * | 2015-05-20 | 2017-01-25 | 江苏汇安隆电器有限公司 | Iron core laminating process |
| CN205335067U (en) * | 2016-01-21 | 2016-06-22 | 西安启源机电装备股份有限公司 | Full -automatic closed assembly production line of transformer E sections heart |
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