A large motor stator core lamination tool

Abstract

The present invention relates to the technical field of motor core production and assembly, and specifically to a large motor stator core lamination tooling including a workbench and a metal punching sheet, and also includes a lamination assembly, the lamination assembly including a supporting base plate and a locking upper cover plate, a bearing lower base plate is rotatably mounted on the supporting base plate, a locking screw is coaxially mounted on the bearing lower base plate, one end of the locking screw extending out of the bearing lower base plate is sleeved with a main pad, and the main pad is provided with a limiting groove 1, a limiting groove 2 and a limiting groove 3, an eccentric locking shaft is provided on the bearing lower base plate, and the eccentric locking shaft is located in the limiting groove 1, a groove key 1 and a groove key 2 are provided on the main pad, and the groove key 1 is located in the limiting groove 1, and the groove key 2 is arranged in the limiting groove 2 on a pair of sides of the groove key, and the locking upper cover plate is sleeved on the locking screw and against the metal punching sheet. The present invention can ensure the precision coaxiality of the groove with greater precision, and effectively reduce the problem of the iron core deformation caused by welding and being difficult to remove.

Description

Technical Field

[0001] The invention relates to the technical field of motor iron core production and assembly, and in particular to a large motor stator iron core lamination tooling. Background Art

[0002] The stator core is made of several punching sheets stacked layer by layer to a certain thickness. When making the core, a tooling is needed to ensure the stacking accuracy and the statistics of the slot type. The punching sheets need to be axially pressurized, tightened, and fixed.

[0003] China Patent Network has disclosed a publication number of CN105515299B, named as a large motor stator core stacking tooling, which is carried out by stacking the stator core on a vertical press. Before stacking, the adjusting nut is turned clockwise with a wrench to pull the pull rod 18 up, driving the block wedge plate and the sheet tensioning plate to extend in the outer circle direction. After the adjustment is completed, the lower tooth pressure plate positioning ring is installed into the upper end face of the base, and its outer circle is flush with the outer circle of the base. The groove of the lower tooth pressure plate positioning ring is aligned with the oblique keyway of the cylinder, and the corresponding oblique key is inserted into the oblique keyway of the cylinder. The stator tooth pressure plate is placed until all are stacked. After being leveled, the pressure plate is hoisted to the upper tooth pressure plate positioning ring, and the tooling is hoisted together with the stacked punching sheets onto the column press platform for pressurization, and a plurality of locking nuts are tightened. Finally, the tooling is hoisted and placed on a special welding frame for welding to improve the concentricity, cylindricity and groove flatness of the product.

[0004] The above-mentioned fixture reduces the diameter of the core to solve the deformation caused by welding, but the disadvantage of doing so is that the gap between the punching sheets will be large, the concentricity and the groove type will have deviations, and when the core is deformed due to welding, it is not convenient to remove the processed core. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a large motor stator core stacking tooling, which can effectively solve the problems in the prior art of large punching sheet gaps, easy deviations in concentricity and slot shape, and deformation of the core that makes it difficult to remove.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a large motor stator core lamination tool, comprising a workbench and a metal punching sheet, and further comprising:

[0008] The stacking assembly for installing metal punching sheets, the stacking assembly includes a supporting base plate and a locking upper cover plate, the supporting base plate is rotatably mounted with a mounting bearing lower base plate, the mounting bearing lower base plate is coaxially mounted with a locking screw, and the locking screw passes through the supporting base plate, and one end of the locking screw extending out of the mounting bearing lower base plate is sleeved with a main pad, the main pad is used to limit the position of the metal punching sheet, and the main pad is provided with a limiting groove 1, a limiting groove 2 and a limiting groove 3, an eccentric locking shaft for limiting the rotation of the main pad along the locking screw is provided on the mounting bearing lower base plate, and the eccentric locking shaft is located in the limiting groove 1, a groove key 1 and a groove key 2 are provided on the main pad, and the groove key 1 is located in the limiting groove 1, and the groove key 2 is arranged in the limiting groove 2 on a pair of sides of the groove key, and the locking upper cover plate is sleeved on the locking screw and resists multiple groups of stacked metal punching sheets.

[0009] Furthermore, a ball bearing is provided between the support base plate and the lower base plate for mounting the bearing, and a bearing end cover is provided on a side of the support base plate away from the lower base plate for mounting the bearing.

[0010] Furthermore, the main pad is provided with multiple groups of pin holes, and the lower base plate of the mounting bearing is correspondingly provided with multiple groups of pin holes. A locking block is provided at one end of the eccentric locking shaft away from the lower base plate of the mounting bearing, and the locking block is connected to the main pad through a pin.

[0011] Furthermore, the groove key 1 is slidably arranged on the main pad and abuts against the eccentric locking shaft and the metal punching sheet, and two groups of gaskets are installed on the main pad, and the two groups of gaskets are distributed and abut against both sides of the groove key 1.

[0012] Furthermore, the groove key 2 is in the shape of an inverted "mountain", and the metal punch is correspondingly provided with a groove, and while the groove key 2 abuts against the metal punch, the protrusion on the groove key 2 extends into the groove on the metal punch.

[0013] Furthermore, it also includes two groups of groove-type keys three, the limiting groove three is provided with two groups and is symmetrically distributed on both sides of the limiting groove two, and the two groups of groove-type keys three are distributed in the limiting groove three and against the metal punching sheet.

[0014] Furthermore, a plurality of welding grooves are provided on the outer periphery of the metal punching sheet, and the plurality of welding grooves are distributed in a ring array.

[0015] Furthermore, a cam, a sliding rod and a limit pressure block are provided at one end of the locking screw extending out of the supporting base plate. The cam is rotatably arranged on the locking screw, and the sliding rod is slidably installed on the locking screw. An elastic member is provided between the sliding rod and the locking screw. The limit pressure block is used to always push the sliding rod toward the cam. A limit pressure block cooperating with the sliding rod is slidably installed on the locking screw. When the sliding rod moves toward the elastic member, the limit pressure block is squeezed against the supporting base plate to limit the rotation of the base plate under the bearing installation on the supporting base plate.

[0016] Furthermore, the locking screw is connected with the lower base plate of the mounting bearing by interference fit, and the locking screw is rotatably connected with the supporting base plate. The sliding rod is provided with a push plate slidably connected with the locking screw, and the push plate extends out of the locking screw.

[0017] Furthermore, it also includes a tooth plate and a support rod, the support rod is rotatably arranged on the side of the support base plate away from the lower base plate where the bearing is installed, and a limit gear coaxial with the support rod rotation axis is fixedly installed on the support rod, the tooth plate is slidably arranged on the support base plate and cooperates with the push plate, when the cam moves the sliding rod to move the push plate, the push plate squeezes the tooth plate toward the limit gear, thereby limiting the rotation of the support rod, and then fixing the angle between the support rod and the support base plate.

[0018] Beneficial Effects

[0019] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] 1. The main pad is matched with the bottom plate of the bearing installation to ensure the firmness of the metal punching sheet. The pins, slot key 1, slot key 2 and slot key 3 are matched with the limit slot 1, limit slot 2 and limit slot 3 on the main pad to achieve double positioning, thereby ensuring the precision and coaxiality of the slot with greater accuracy. The eccentric cam tensioning principle is adopted to effectively reduce the problem of the core deformation caused by welding and the difficulty of removing it from the tooling;

[0021] Second, through the cooperation of the cam, slide bar and limit pressure block on the locking screw, the rotation and limit of the bottom plate under the installed bearing can be quickly switched. At the same time, when the push plate follows the movement of the slide bar, it cooperates with the tooth plate to limit the rotation of the limit gear and the support rod. The angle of the stacked assembly can be quickly adjusted to cooperate with welding, thereby improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure explosion of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the main pad of the present invention;

[0027] Figure 5 It is a schematic diagram of the cooperation of the main backing plate, the eccentric locking shaft, the groove key 1 and the metal punching sheet of the present invention;

[0028] Figure 6 This is a schematic diagram of the connection between the locking upper cover plate and the eccentric locking shaft of the present invention;

[0029] Figure 7 It is a cross-sectional view of the connection between the locking screw and the lower base plate of the mounting bearing of the present invention;

[0030] Figure 8 It is a state diagram of the present invention during welding.

[0031] : 1. workbench; 101. storage slot; 102. clearance hole; 2. support base plate; 23. limit gear; 24. tooth plate; 26. support rod; 3. bearing lower base plate; 4. auxiliary pad; 5. main pad; 501. limit slot one; 502. limit slot two; 503. limit slot three; 51. gasket; 6. locking upper cover plate; 7. eccentric locking shaft; 8. locking screw; 81. cam; 82. slide rod; 83. push plate; 84. limit pressure block; 85. elastic part; 9. groove key one; 10. groove key two; 11. groove key three; 12. metal punching sheet; 1201. welding groove; 13. locking block. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The present invention will be further described below in conjunction with the embodiments.

[0034] Example:

[0035] A large motor stator core lamination tooling, see attached Figure 1-8 , including a workbench 1 and a metal punching sheet 12, the workbench 1 is used as a processing platform to ensure stability when the metal punching sheet 12 is stacked, and also includes:

[0036] A stacking assembly for installing metal punching sheets 12, the stacking assembly is used to load the metal punching sheets 12 in sequence, and maintain the concentricity and groove type uniformity between multiple groups of metal punching sheets 12, and reduce the gaps between multiple groups of metal punching sheets 12. The stacking assembly includes a supporting base plate 2 and a locking upper cover plate 6. One side of the supporting base plate 2 is rotatably connected to the workbench 1, and the supporting base plate 2 can swing on the workbench 1 along the rotating axis. At the same time, a receiving groove 101 and a clearance hole 102 are provided on the workbench 1 to prevent the components on the supporting base plate 2 from interfering with the workbench 1 when the supporting base plate 2 is rotated to horizontal, resulting in the supporting base plate 2 being unable to be horizontal. The receiving groove 101 and the clearance hole 102 are provided on the workbench 1 to ensure the level of the supporting base plate 2, and then after the metal punching sheets 12 are assembled in the stacking assembly, it is convenient to weld and fix multiple groups of metal punching sheets 12. Multiple groups of auxiliary pads 4 are provided between the bearing lower base plate 3 and the locking upper cover plate 6 to be placed between multiple groups of metal punching sheets 12;

[0037] A bearing mounting lower base plate 3 is rotatably mounted on the support base plate 2, a ball bearing is arranged between the support base plate 2 and the bearing mounting lower base plate 3, and a bearing end cover is arranged on the side of the support base plate 2 away from the bearing mounting lower base plate 3. By rotatably setting the bearing mounting lower base plate 3 and the support base plate 2, after the metal punching sheets 12 are installed and stacked, it is convenient to weld multiple groups of metal punching sheets 12, and the metal punching sheets 12 are not removed during welding, which effectively prevents their welding deformation. A locking screw 8 is coaxially mounted on the bearing mounting lower base plate 3, and the locking screw 8 passes through the support base plate 2, and the locking screw 8 is connected to the bearing mounting lower base plate 3 by interference fit, and the locking screw 8 is rotatably connected with the support base plate 2. When the metal punching sheets 12 are stacked, a nut is installed at the end of the locking screw 8 away from the support base plate 2 and tightened to press the metal punching sheets 12 to reduce the gap between adjacent metal punching sheets 12. The locking screw 8 can limit the rotation of the bearing lower base plate 3 and the support base plate 2. When multiple groups of metal punching sheets 12 are stacked, the rotation of the bearing lower base plate 3 and the support base plate 2 is limited. After the stacking is completed, the restriction between the bearing lower base plate 3 and the support base plate 2 is cancelled, so that the bearing lower base plate 3 is rotated for welding, which is convenient for welding multiple places on the periphery of the stacked metal punching sheets 12 to ensure stability.

[0038] Specifically, a cam 81, a slide bar 82 and a limit pressure block 84 are provided at one end of the locking screw 8 extending out of the supporting base plate 2. The cam 81 is rotatably arranged on the locking screw 8, and the slide bar 82 is slidably installed on the locking screw 8. An elastic member 85 is provided between the slide bar 82 and the locking screw 8. The limit pressure block 84 is used to always push the slide bar 82 toward the cam 81, wherein the cam 81 is elliptical. When the cam 81 is rotated to a state perpendicular to the locking screw 8, the cam 81 cancels the squeezing of the slide bar 82, and when the elastic member 85 is reset The slide bar 82 is extended out of the locking screw 8. When the cam 81 rotates to be parallel to the locking screw 8, the cam 81 squeezes the slide bar 82 back into the locking screw 8. Since a limiting pressure block 84 cooperating with the slide bar 82 is slidably installed on the locking screw 8, when the slide bar 82 moves toward the elastic member 85, the limiting pressure block 84 is squeezed to resist the support base plate 2, thereby limiting the rotation of the bearing-mounted lower base plate 3 on the support base plate 2. In addition, a push plate 83 slidably connected to the locking screw 8 is provided on the slide bar 82, and the push plate 83 extends out of the locking screw 8.

[0039] Furthermore, it also includes a toothed plate 24 and a support rod 26. The support rod 26 is rotatably arranged on the side of the support base plate 2 away from the bottom plate 3 under the bearing, and the connection between the support rod 26 and the support base plate 2 is located at the end of the support base plate 2 away from the workbench 1. A limit gear 23 coaxial with the rotation axis of the support rod 26 is fixedly installed on the support rod 26. When the support rod 26 and the support base plate 2 rotate, the limit gear 23 will be driven to rotate. The toothed plate 24 is slidably arranged on the support base plate 2 and cooperates with the push plate 83. The toothed plate 24 and the push plate 83 are provided with a corresponding one end close to each other. The guide slopes cooperate with each other. When the cam 81 rotates to be parallel to the locking screw 8, the slide rod 82 is pushed to squeeze the elastic member 85. At the same time, the slide rod 82 will drive the push plate 83 to move toward the supporting base plate 2. At this time, the push plate 83 squeezes the tooth plate 24 to move toward the limiting gear 23 to push the tooth plate 24 to move toward the limiting gear 23 and engage, thereby limiting the rotation of the support rod 26, and then fixing the angle between the support rod 26 and the supporting base plate 2, so that the angle between the stacking assembly and the workbench 1 can be quickly adjusted to assist the operator to better install the metal punching sheet 12.

[0040] One end of the locking screw 8 extending out of the lower base plate 3 of the bearing installation is sleeved with a main pad 5 that limits the position of the metal punching sheet 12, and the main pad 5 is provided with a limiting groove 1 501, a limiting groove 2 502 and a limiting groove 3 503. The lower base plate 3 of the bearing installation is provided with an eccentric locking shaft 7 that limits the main pad 5 from rotating along the locking screw 8, and the eccentric locking shaft 7 is located in the limiting groove 1 501, and is limited by the eccentric locking shaft 7 and the locking screw 8 to fix the position of the main pad 5. At the same time, a plurality of groups of pin holes are provided on the main pad 5, and a plurality of groups of pin holes are correspondingly provided on the lower base plate 3 of the bearing installation. , to cooperate with the pin rod to further fix the main pad 5 to the lower base plate 3 of the mounting bearing, a locking block 13 is provided at the end of the eccentric locking shaft 7 away from the lower base plate 3 of the mounting bearing, and the locking block 13 is connected to the main pad 5 through a pin, and the position of the eccentric locking shaft 7 is further limited by the locking block 13, a groove key 1 9 and a groove key 2 10 are provided on the main pad 5, and the groove key 1 9 is located in the limiting groove 1 501, and the groove key 2 10 is arranged in the limiting groove 2 502 on the opposite side of the groove key 1 9, and the locking upper cover plate 6 is sleeved on the locking screw 8 and resists against multiple groups of stacked metal punching sheets 12.

[0041] Furthermore, the groove key 9 is slidably set on the main pad 5 and presses against the eccentric locking shaft 7 and the metal punching sheet 12, and two groups of gaskets 51 are installed on the main pad 5, and the two groups of gaskets 51 are distributed on both sides of the groove key 9 to limit the position of the groove key 9 and improve the fixing accuracy of the groove key 9 to the metal punching sheet 12.

[0042] In addition, the groove key 10 is in the shape of an inverted "mountain", and the metal punching sheet 12 is provided with a corresponding groove. The groove key 10 presses against the metal punching sheet 12, and the protrusion on the groove key 10 extends into the groove on the metal punching sheet 12. It also includes two groups of groove keys 11. The limiting groove 503 is provided with two groups and is symmetrically distributed on both sides of the limiting groove 502. The two groups of groove keys 11 are distributed in the limiting groove 503 and press against the metal punching sheet 12, thereby further preventing the metal punching sheet 12 from deforming.

[0043] It is worth noting that a plurality of welding grooves 1201 are provided on the outer periphery of the metal punching sheet 12, and the plurality of welding grooves 1201 are distributed in a circular array, and welding is performed through the reserved welding grooves 1201 to improve the flatness.

[0044] Working principle: First, install the bearing lower base plate 3 on the support base plate 2 through the ball bearing, then install the locking screw 8 on the bearing lower base plate 3 through interference fit, then put the main pad 5 on the locking screw 8, then rotate the main pad 5 along the locking screw 8 as the axis until the eccentric locking shaft 7 is inserted into the bearing lower base plate 3 to achieve the initial fixation of the main pad 5, then insert the pin to further fix the main pad 5 and the bearing lower base plate 3, and then install the main pad First, fix two sets of gaskets 51 in the limiting groove 1 501 between the plates 5, and fix two sets of groove keys 3 11 to the limiting groove 3 503 on the main pad 5 by screws, etc. After the main pad 5 is fixed, install the locking block 13 to the main pad 5 by pins to further limit the deviation of the eccentric locking shaft 7, install the groove key 1 9 into the limiting groove 1 501, and install the groove key 2 10 into the limiting groove 2 502 at the same time, and finally start to install the metal punching sheet 12. When installing, first Put in a set of auxiliary pads 4, and then put multiple sets of metal punching sheets 12 on the main pad 5 in sequence, and install the positioning grooves on the metal punching sheets 12 according to the corresponding grooves of the groove key 1 9 and the groove key 2 10. Add auxiliary pads 4 in the middle according to the situation, and then insert needle bars into the multiple sets of metal punching sheets 12 to ensure that the metal punching sheets 12 are neat, then put in the locking upper cover plate 6 and tighten the eccentric locking shaft 7 and screw in the nut to fix the locking screw 8, and turn the cam 81 again to cancel the restriction on the slide rod 82, so as to take The squeezing of the limit pressure block 84 is eliminated, and the limit pressure block 84 is separated from the supporting base plate 2. At this time, the lower base plate 3 installed with the bearing can rotate on the supporting base plate 2. At the same time, the push plate 83 cancels the squeezing of the tooth plate 24 and the restriction on the limit gear 23, so that the support rod 26 can rotate, and the supporting base plate 2 is rotated to be level with the workbench 1. Finally, the tooling is rotated to be welded diagonally. After the welding is completed, the nuts on the eccentric locking shaft 7 and the locking screw 8 are loosened to take out the stacked metal punching sheet 12.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A large motor stator core lamination tool, comprising a workbench (1) and a metal punching sheet (12), characterized in that: Also includes: A stacking assembly for mounting a metal punching sheet (12), the stacking assembly comprising a supporting base plate (2) and a locking upper cover plate (6), the supporting base plate (2) being rotatably mounted with a bearing mounting lower base plate (3), the bearing mounting lower base plate (3) being coaxially mounted with a locking screw (8), and the locking screw (8) passing through the supporting base plate (2), and one end of the locking screw (8) extending out of the bearing mounting lower base plate (3) being sleeved with a main pad (5), the main pad (5) being used to limit the position of the metal punching sheet (12), and the main pad (5) being provided with a first limiting groove (501), a second limiting groove (502) and a second limiting groove (503). ) and a limiting groove three (503), the lower base plate (3) of the mounting bearing is provided with an eccentric locking shaft (7) for limiting the rotation of the main pad (5) along the locking screw (8), and the eccentric locking shaft (7) is located in the limiting groove one (501), the main pad (5) is provided with a groove key one (9) and a groove key two (10), and the groove key one (9) is located in the limiting groove one (501), and the groove key two (10) is arranged in the limiting groove two (502) on the opposite side of the groove key one (9), and the locking upper cover plate (6) is sleeved on the locking screw (8) and abuts against a plurality of groups of stacked metal punching sheets (12).

2. A large motor stator core lamination tooling according to claim 1, characterized in that: A ball bearing is provided between the support base plate (2) and the bearing mounting lower base plate (3), and a bearing end cover is provided on the side of the support base plate (2) away from the bearing mounting lower base plate (3).

3. The large motor stator core lamination tooling according to claim 1, characterized in that: The main pad (5) is provided with a plurality of groups of pin holes, and the lower base plate (3) for mounting the bearing is provided with a plurality of groups of pin holes correspondingly. A locking block (13) is provided at one end of the eccentric locking shaft (7) away from the lower base plate (3) for mounting the bearing, and the locking block (13) is connected to the main pad (5) via a pin.

4. A large motor stator core lamination tooling according to claim 3, characterized in that: The groove key one (9) is slidably arranged on the main backing plate (5) and abuts against the eccentric locking shaft (7) and the metal punching sheet (12), and two groups of gaskets (51) are installed on the main backing plate (5), and the two groups of gaskets (51) are distributed and abut against both sides of the groove key one (9).

5. The large motor stator core lamination tooling according to claim 1, characterized in that: The groove key 2 (10) is in the shape of an inverted "mountain", and the metal punch (12) is provided with a corresponding groove. The groove key 2 (10) abuts against the metal punch (12), and the protrusion on the groove key 2 (10) extends into the groove on the metal punch (12).

6. A large motor stator core lamination tooling according to claim 5, characterized in that: It also includes two groups of slot-shaped keys (11), the limiting slot (503) is provided with two groups and is symmetrically distributed on both sides of the limiting slot (502), and the two groups of slot-shaped keys (11) are distributed in the limiting slot (503) and abut against the metal punching sheet (12).

7. The large motor stator core lamination tooling according to claim 1, characterized in that: A plurality of groups of welding grooves (1201) are provided on the outer periphery of the metal punching sheet (12), and the plurality of groups of welding grooves (1201) are distributed in a ring array.

8. The large motor stator core lamination tooling according to claim 1, characterized in that: A cam (81), a slide bar (82) and a limit pressure block (84) are provided at one end of the locking screw (8) extending out of the support base plate (2); the cam (81) is rotatably arranged on the locking screw (8); the slide bar (82) is slidably mounted on the locking screw (8); an elastic member (85) is provided between the slide bar (82) and the locking screw (8); the limit pressure block (84) is used to always push the slide bar (82) toward the cam (81); a limit pressure block (84) cooperating with the slide bar (82) is slidably mounted on the locking screw (8); when the slide bar (82) moves toward the elastic member (85), the limit pressure block (84) is pressed against the support base plate (2) to limit the rotation of the bearing lower base plate (3) on the support base plate (2).

9. A large motor stator core lamination tooling according to claim 8, characterized in that: The locking screw (8) is connected to the lower base plate (3) of the mounting bearing by interference fit, and the locking screw (8) is rotatably connected to the supporting base plate (2). The sliding rod (82) is provided with a push plate (83) slidably connected to the locking screw (8), and the push plate (83) extends out of the locking screw (8).

10. A large motor stator core lamination tooling according to claim 9, characterized in that: It also includes a toothed plate (24) and a support rod (26), wherein the support rod (26) is rotatably arranged on a side of the support base plate (2) away from the lower base plate (3) where the bearing is installed, and a limit gear (23) coaxial with the rotation axis of the support rod (26) is fixedly installed on the support rod (26), and the toothed plate (24) is slidably arranged on the support base plate (2) and cooperates with the push plate (83), and when the cam (81) moves the slide rod (82) to move the push plate (83), the push plate (83) presses the toothed plate (24) toward the limit gear (23), thereby limiting the rotation of the support rod (26), and then fixing the angle between the support rod (26) and the support base plate (2).

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