Motor iron core tire for high-power pump and assembling method thereof
阅读说明：本技术 大功率泵用电机铁心车胎及其装配方法 (Motor iron core tire for high-power pump and assembling method thereof ) 是由 高振涛 毛永光 李娅娟 张兰芳 刘传扬 于 2019-11-21 设计创作，主要内容包括：本发明属于电机装配技术领域,具体涉及一种大功率泵用电机铁心车胎,包括芯轴和定子冲片叠压在钢管内的定子铁心；所述芯轴上焊接有幅铁,定子铁心套装在幅铁的外表面,所述定子铁心一端设置前压板,前压板连接在芯轴的头端,定子铁心另一端设置有内压板,内压板套装在幅铁上,芯轴的尾端设置后压板,后压板与幅铁端面接触,内压板和后压板之间通过若干压紧螺杆固定支撑。本发明提供了一种通用型车胎,能够适用于各种不同型号的定子铁芯的加工,结构简单,使用方便,适用于铁心长度与直径比例远远超过正常电机的定子铁心的加工。(The invention belongs to the technical field of motor assembly, and particularly relates to a motor iron core tire for a high-power pump, which comprises a core shaft and a stator iron core, wherein a stator punching sheet is laminated in a steel pipe; the welding has the width of cloth iron on the dabber, and stator core suit is at the surface of width of cloth iron, stator core one end sets up preceding clamp plate, and preceding clamp plate is connected at the head end of dabber, and the stator core other end is provided with the inner pressure board, and the inner pressure board suit is on the width of cloth iron, and the tail end of dabber sets up the back clamp plate, and the back clamp plate contacts with width of cloth iron terminal surface, through a plurality of compression screw fixed stay between inner pressure board and the back clamp. The invention provides a universal tire which can be suitable for processing various stator cores of different types, has a simple structure and convenient use, and is suitable for processing the stator core of which the ratio of the length to the diameter of the core is far more than that of a normal motor.)
1. Motor core tire for high-power pump, its characterized in that: the stator core comprises a core shaft and a stator punching sheet, wherein the stator punching sheet is laminated in a steel pipe; the welding has the width of cloth iron on the dabber, and stator core suit is at the surface of width of cloth iron, stator core one end sets up preceding clamp plate, and preceding clamp plate is connected at the head end of dabber, and the stator core other end is provided with the inner pressure board, and the inner pressure board suit is on the width of cloth iron, and the tail end of dabber sets up the back clamp plate, and the back clamp plate contacts with width of cloth iron terminal surface, through a plurality of compression screw fixed stay between inner pressure board and the back clamp.
2. The motor core tire for a high power pump according to claim 1, wherein: one side of the inner pressing plate, which is close to the stator core, is provided with a stepped annular spigot, the annular spigot extends into the inner diameter of the steel pipe, the spigot end face is contacted with the end plate of the core, and the stepped face of the inner pressing plate is contacted with the end face of the steel pipe.
3. The motor core tire for a high power pump according to claim 1, wherein: the two ends of the steel pipe are respectively inserted into a groove sample rod for fixing the stator punching sheet, the groove sample rod close to the head end of the mandrel is fixed on the front pressing plate through a cushion cover and a nut, and the groove sample rod close to the tail end of the mandrel penetrates through the inner pressing plate and is fixed on the rear pressing plate through the cushion cover and the nut.
4. The motor core tire for a high power pump according to claim 1, wherein: the head end of the mandrel is provided with fine threads, the front pressing plate is connected to the head end of the mandrel through threads, the rear pressing plate is fixed to the tail end of the mandrel through screws, the compression screw penetrates through the rear pressing plate and is connected to the inner pressing plate, the head of the compression screw is provided with a compression nut, and the compression nut is tightly pressed on the rear pressing plate.
5. The motor core tire for a high power pump according to claim 1, wherein: and the rear pressing plate is provided with a plurality of lightening holes.
6. The method for assembling the motor core tire for the high-power pump is characterized by comprising the following steps of:
the method comprises the following steps: laminating the stator punching sheets into the steel pipe to form a stator core, and vertically hoisting and assembling the stator core on the padding;
step two: placing an inner pressing plate at the top end of a vertical stator iron core, enabling a spigot of the inner pressing plate to enter the inner diameter of the steel pipe, pressing the end face of the spigot on an iron core end plate tightly, and enabling a step face formed by the spigot and the inner pressing plate to be in contact with the end face of the steel pipe;
step three: a plurality of compression screws are assembled at one end of the inner pressure plate, which is far away from the seam allowance;
step four: welding a width iron on a mandrel, assembling the tail end of the mandrel into an inner hole of the stator core, and matching the outer diameter of the width iron with the inner hole of the core;
step five: assembling a rear pressing plate on the tail end of the mandrel, wherein the end face of the rear pressing plate is in contact with the end face of the spoke iron, and the inner pressing plate and the rear pressing plate are supported and pressed through a plurality of pressing screws;
step six: horizontally placing the stator core assembled with the mandrel, and fastening a front pressing plate at the head end of the mandrel and close to the end face of the steel pipe;
step seven: inserting sample rods into two ends of the iron core respectively and fixing the sample rods;
step eight: the tail end of the mandrel is clamped by a lathe chuck, the head end of the mandrel is jacked in a central hole of the mandrel by a tailstock top tip of the lathe, so that the whole workpiece and the clamping fixture are clamped on a lathe workbench together, and the outer surface of the steel pipe is lathed.
7. The method for assembling a motor core tire for a high power pump according to claim 6, wherein: in the third step, the number of the compression screws is six, the six compression screws are identical in specification and are uniformly arranged on the inner pressing plate along the circumferential direction, and the heights of the six compression screws are adjusted, so that the planes of the pressing plates after the six compression screws are placed are identical in height.
8. The method for assembling a motor core tire for a high power pump according to claim 6, wherein: and a plurality of sets of the compression screws are arranged according to the length of the iron core to be processed.
9. The method for assembling a motor core tire for a high power pump according to claim 6, wherein: and in the fourth step, the fit clearance between the outer diameter of the spoke iron and the inner hole of the iron core is controlled to be 0.12-0.15 mm.
10. The method for assembling a motor core tire for a high power pump according to claim 6, wherein: a deflector rod device is arranged on a lathe chuck, a deflector rod is inserted into any lightening hole on the rear pressing plate, and the workpiece and the clamping fixture rotate synchronously along with the rotation of the lathe head to carry out turning.
Technical Field
The invention belongs to the technical field of motor assembly, and particularly relates to a motor iron core tire for a high-power pump and an assembly method thereof.
Background
When the stator core is processed, a cramp groove is generally punched on the excircle of a stator punching sheet, then the punching sheet is well finished by the cramp, and then the cramp is pressed in during pressurization and flattened to form the stator core, wherein the ratio of the length to the diameter is not more than 1.2:1 generally, and if the ratio of the length to the diameter of the core to be manufactured is more than 2:1, the cylindricity and the verticality of the stator core produced by the process can hardly meet the requirements. If the form and position tolerance exceeds a certain range, the rotor is arranged on the stator core, gap unevenness is caused, electromagnetic waves generated during rotation are uneven, and a produced motor is unqualified.
In order to solve the problem, an internal laminating process is adopted to laminate the stator punching sheets in a seamless steel tube. The thickness of the steel pipe is also in a certain proportion, if the steel degree with small wall thickness is not enough, if the steel degree with thick wall is selected, the steel degree is guaranteed, but the heat dissipation of the iron core is not good, so the steel pipe with a certain thickness is selected, the punching sheet is laminated in the steel pipe, and then the outer surface of the steel pipe is processed to reach the proper thickness, so a set of fixed workpieces suitable for a common lathe is needed, and the steel pipe is also considered for batch production and is convenient to disassemble and use repeatedly. The existing processing experience is that an expansion tire with a self-locking angle is processed on the inner circle of an iron core, but the inner diameter of a workpiece is 250mm at present, the minimum length of the workpiece is more than 800mm, the expansion tire with the self-locking angle is required to be manufactured to be tensioned, the tensioning force cannot meet the requirement, the tire tiles are large and long, and the tire tiles are difficult to connect and fix.
Disclosure of Invention
According to the problems in the prior art, the invention aims to provide a motor iron core tire for a 200-350 KW high-power pump and an assembling method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a motor iron core tire for a high-power pump comprises a core shaft and a stator iron core, wherein a stator punching sheet is laminated in a steel pipe; the welding has the width of cloth iron on the dabber, and stator core suit is at the surface of width of cloth iron, stator core one end sets up preceding clamp plate, and preceding clamp plate is connected at the head end of dabber, and the stator core other end is provided with the inner pressure board, and the inner pressure board suit is on the width of cloth iron, and the tail end of dabber sets up the back clamp plate, and the back clamp plate contacts with width of cloth iron terminal surface, through a plurality of compression screw fixed stay between inner pressure board and the back clamp.
Furthermore, one side of the inner pressing plate, which is close to the stator core, is provided with a stepped annular spigot, the annular spigot extends into the inner diameter of the steel pipe, the spigot end face is in contact with the end plate of the core, and the stepped surface of the inner pressing plate is in contact with the end face of the steel pipe.
Furthermore, a groove sample rod for fixing the stator punching sheet is respectively inserted into two ends of the steel pipe, the groove sample rod close to the head end of the mandrel is fixed on the front pressing plate through a cushion cover and a nut, and the groove sample rod close to the tail end of the mandrel penetrates through the inner pressing plate and is fixed on the rear pressing plate through the cushion cover and the nut.
Furthermore, the head end of the mandrel is provided with fine threads, the front pressing plate is connected to the head end of the mandrel through threads, the rear pressing plate is fixed to the tail end of the mandrel through screws, the compression screw penetrates through the rear pressing plate and is connected to the inner pressing plate, the head of the compression screw is provided with a compression nut, and the compression nut is tightly pressed on the rear pressing plate.
Furthermore, a plurality of lightening holes are formed in the rear pressing plate.
Further, the steel pipe is a seamless steel pipe.
A method for assembling a motor core tire for a high-power pump comprises the following steps:
the method comprises the following steps: laminating the stator punching sheets into the steel pipe to form a stator core, and vertically hoisting and assembling the stator core on the padding;
step two: placing an inner pressing plate at the top end of a vertical stator iron core, enabling a spigot of the inner pressing plate to enter the inner diameter of the steel pipe, pressing the end face of the spigot on an iron core end plate tightly, and enabling a step face formed by the spigot and the inner pressing plate to be in contact with the end face of the steel pipe;
step three: a plurality of compression screws are assembled at one end of the inner pressure plate, which is far away from the seam allowance;
step four: welding a width iron on a mandrel, assembling the tail end of the mandrel into an inner hole of the stator core, and matching the outer diameter of the width iron with the inner hole of the core;
step five: assembling a rear pressing plate on the tail end of the mandrel, wherein the end face of the rear pressing plate is in contact with the end face of the spoke iron, and the inner pressing plate and the rear pressing plate are supported and pressed through a plurality of pressing screws;
step six: horizontally placing the stator core assembled with the mandrel, and fastening a front pressing plate at the head end of the mandrel and close to the end face of the steel pipe;
step seven: inserting sample rods into two ends of the iron core respectively and fixing the sample rods;
step eight: the tail end of the mandrel is clamped by a lathe chuck, the head end of the mandrel is jacked in a central hole of the mandrel by a tailstock top tip of the lathe, so that the whole workpiece and the clamping fixture are clamped on a lathe workbench together, and the outer surface of the steel pipe is lathed.
Furthermore, in the third step, the number of the compression screws is six, the six compression screws are identical in specification and are uniformly arranged on the inner pressure plate along the circumferential direction, and the heights of the six compression screws are adjusted, so that the planes of the pressure plates after the six compression screws are placed are identical in height.
Furthermore, a plurality of sets of compression screws are arranged according to the length of the iron core to be processed.
Furthermore, in the fourth step, the fit clearance between the outer diameter of the spoke iron and the inner hole of the iron core is controlled to be 0.12-0.15 mm.
Furthermore, a deflector rod device is arranged on a lathe chuck, a deflector rod is inserted into any lightening hole on the rear pressing plate, and the workpiece and the clamping fixture rotate synchronously along with the rotation of the lathe head to carry out turning.
The invention has the beneficial effects that: the invention provides a universal tire which can be suitable for processing various stator cores of different types, has a simple structure and convenient use, and is suitable for processing the stator core of which the ratio of the length to the diameter of the core is far more than that of a normal motor.
Drawings
FIG. 1 is a schematic view of a tire structure;
FIG. 2 is a side view of the tire structure;
in the figure, 1, a rear pressing plate 2, an inner pressing plate 3, a spoke iron 4, a groove sample rod 5, a front
Detailed description of the preferred embodiments
In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention.
Referring to the attached drawings 1-2, the motor iron core tire for the high-power pump comprises a core shaft and a stator iron core, wherein a stator punching sheet is laminated in a seamless steel pipe; the welding has width of cloth iron 3 on the
Furthermore, one side of the inner pressing plate 2 close to the stator core is provided with a stepped annular seam allowance, the annular seam allowance extends into the inner diameter of the steel pipe, the end face of the seam allowance is in contact with an end plate of the iron core, and the stepped surface of the inner pressing plate is in contact with the end face of the
Furthermore, a groove sample rod 4 for fixing the stator punching sheet is respectively inserted into two ends of the
Furthermore, the head end of the mandrel is provided with fine threads, the front pressing plate 5 is connected to the head end of the mandrel through threads, the rear pressing plate 1 is fixed to the tail end of the mandrel through screws 12, the
Furthermore, a plurality of lightening holes 15 are arranged on the rear pressure plate.
The design structure of the sleeve mould meets the following conditions;
1. the selected equipment is a common horizontal lathe, because the weight of the workpiece is more than 500Kg, and the weight of the clamping fixture is added, if the clamping fixture is too heavy, the weight of the clamping fixture and the weight of the workpiece are superposed, the weight of the clamping fixture possibly exceeds the bearing capacity of the equipment, so the precision of the equipment and the processing precision are influenced, and the weight of the clamping fixture is lighter.
2. The motors are produced in batches, the clamping fixture can be used repeatedly, and the result is convenient and firm to assemble and disassemble.
3. The normal cooperation of motor stator core and casing is transition fit, and the seamless steel pipe skin thickness of this project is 6mm, adopts transition fit steel pipe to bear not live pressure again, consequently enlargies 0.2mm on original basis, if only rely on mould dabber and the cooperation of unshakable in one's determination, probably causes the piece of punching to remove in the steel pipe, so at two end design clamp plates, pushes down the steel pipe.
4. The mandrel structure is designed to be in a wide iron state, and the contact area between the mandrel structure and the inner circle of the iron core is reduced as much as possible, so that the mandrel structure is favorable for assembly and disassembly and achieves the purpose of reducing weight.
5. In order to prevent the mandrel and the pressure plate from rotating, the rear pressure plate and the mandrel are fixed by screws.
6. The connection of the front pressing plate and the mandrel is threads, and the design is fine threads, so that the pressing plate and the steel pipe are more stable and firm.
7. Because the length of the mandrel is fixed, in order to meet the requirements of iron cores with different lengths, the same set of mould can be used, an inner pressing plate is additionally arranged at the position of the rear pressing plate, the rear pressing plate and the inner pressing plate are fixed by six pressing screw rods, and the iron cores with different specifications are fixed by the pressing screw rods with different lengths, so that the purposes of reducing weight and being convenient are achieved.
8. Further prevent to remove between punching sheet and the steel pipe, respectively insert a groove appearance stick through two end clamp plates, groove appearance stick top is fixed with the clamp plate, makes groove appearance stick live the punching sheet respectively, and is more firm more stable.
The assembling process of the clamping fixture and the workpiece is as follows:
1. firstly, the laminated stator core is vertically lifted by a crane and placed on a prepared padding, and the height of the padding is higher than the length of the core shaft extending out of the core.
2. And the inner pressing plate is stably placed on the iron core, the lower plane of the inner pressing plate, namely the end face of the spigot, is required to be contacted with the end plate of the iron core, the spigot of the inner pressing plate enters the inner diameter of the steel pipe, and the stepped surface of the inner pressing plate is contacted with the end face of the steel pipe.
3. Six compression screws are arranged on the inner pressure plate, and the heights of the six compression screws are adjusted, so that the six compression screws are placed at the same height of the plane of the rear pressure plate.
4, a hanging ring is arranged at the rear end of the mandrel, the hanging ring is hung by a crane and is stably and slowly inserted into an inner hole of the stator core, the fit clearance between the inner hole of the core and the mandrel is controlled within 0.12-0.15 mm, and therefore, on one hand, the copper rod lightly beats the top end of the mandrel by means of the dead weight of the mandrel until the top end of the amplitude iron of the mandrel is consistent with the plane of the compression screw.
5. And then the rear pressing plate is arranged on the mandrel and is firmly fixed by the
6. After the rear end part of the mandrel is installed, a hanging ring is installed by means of a threaded hole which is processed on the steel pipe and used for tightly propping the iron core, and a hanging cloth belt is tied on the hanging ring, so that the iron core is horizontally placed on a prepared bracket.
7. The front pressing plate can be screwed down along the fine thread of the mandrel, when the front pressing plate is close to the steel pipe, a small steel pipe is inserted into the pressing plate mounting hole, and the front pressing plate is screwed down again, so that the front pressing plate is tightly and firmly fixed on the end face of the steel pipe.
8. According to the schematic of the attached figure 1, two ends of the sample rod are inserted into the grooves, and the groove sample rod is fixed on the front pressing plate and the rear pressing plate by a groove sample
9. The processed iron cores are different in height, only the compression screws of different specifications are replaced when the rear pressing plate is installed, the compression screws are prepared into various specifications according to the length of the iron cores in size, so that the purpose that a pair of molds can process the iron cores of different specifications in length is achieved, and the universality is achieved.
10. Practice proves that the structure of the sleeve mould meets the design requirements, the sleeve mould is suitable for processing stator cores with various lengths, and the processed products meet the tolerance grade and form and position tolerance requirements specified on drawings.
The device is used on a common lathe, the left end of the mandrel is clamped by a lathe chuck, the right end of the mandrel is jacked in a central hole of the mandrel by a lathe tailstock center, so that the whole workpiece and the clamping fixture are stably clamped on the lathe together. The turning lathe is rotated by only installing a deflector rod device on a lathe chuck, inserting the deflector rod into any lightening hole on the back pressure plate, synchronously rotating the workpiece and the clamping fixture along with the rotation of the lathe head, cutting the seamless steel pipe by controlling the rotating speed of the lathe and the cutting amount of the cutter, primarily turning the allowance, and then finely turning.
The above list is only the preferred embodiment of the present invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
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