Rotor core and magnetic steel pressing tool

Abstract

The utility model relates to the technical field of rotor core preparation, and discloses a rotor core and magnetic steel pressing tool, which comprises an upper die and a lower die, opposite side surfaces of the upper die and the lower die are both provided with alignment pieces, and the two alignment pieces are both used for enabling the rotor core to be concentrically arranged with the upper die and the lower die; a first through hole penetrating through the upper side wall and the lower side wall of the lower die is formed in the lower die, a second through hole penetrating through the upper side wall and the lower side wall of the upper die is formed in the upper die, and a pressing piece penetrates through the first through hole and the second through hole and comprises a center shaft fixed in the first through hole and the second through hole, and the upper portion of the center shaft protrudes out of the second through hole. The rotating handle is rotatably and detachably connected with the upper part of the central shaft; the rotating end of the rotating handle is arranged to be a cam, and when the rotating handle rotates around the rotating end, the cam is used for providing pressing force for the upper die to move downwards. Through the arrangement, the rotor iron core can be clamped in the glue curing process, so that the magnetic steel does not slide in the magnetic steel grooves.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotor core preparation technical field, especially rotor core and magnetic steel's press fit frock. BACKGROUND

[0002] The rotor of the existing permanent magnet synchronous motor is generally composed of a rotor core and a plurality of magnetic steels, and when the rotor is prepared, special glue is first applied to the inner wall of the magnetic steel slot of the rotor core, and then the magnetic steel is inserted into the magnetic steel slot. One reason for the sliding of the magnetic steel into the magnetic steel slot with glue is that the magnetic steel and the adjacent magnetic steel repel each other, and the other reason is that the rotor is formed by stamping and stacking, and the top end of the rotor core is loose, so the magnetic steel will slide in the magnetic steel slot. The glue needs a period of time to solidify, and during the waiting period for the glue to solidify, the magnetic steel needs to be ensured not to slide in the magnetic steel slot. Therefore, there is an urgent need to develop a press fit frock that can ensure that the position of the magnetic steel relative to the magnetic steel slot of the rotor core remains unchanged during the glue solidification process. SUMMARY

[0003] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a rotor core and magnetic steel press fit frock, which aims to clamp the rotor core in the upper die and the lower die by using the upper die and the lower die, and to provide the upper die with a downward pressing force by using the pressing member, so as to clamp the rotor core and prevent the magnetic steel from sliding in the magnetic steel slot.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A rotor core and magnetic steel press fit frock, comprising an upper die and a lower die arranged above and below, wherein the opposite sides of the upper die and the lower die are provided with alignment members, and the two alignment members are used to make the rotor core concentrically arranged with the upper die and the lower die; the lower die is provided with a first through hole penetrating the upper and lower sidewalls thereof, and the upper die is provided with a second through hole penetrating the upper and lower sidewalls thereof, wherein the first through hole and the second through hole are penetrated by a pressing member, the pressing member comprises a central shaft fixed in the first through hole and the second through hole and protruding out of the center of the second through hole at the upper part, and a rotating handle detachably connected with the upper part of the central shaft; the rotating end of the rotating handle is provided with a cam, and when the rotating handle rotates around the rotating end, the cam is used to provide the upper die with a downward pressing force.

[0006] The rotor core and magnetic steel pressing tool, wherein the first through hole is a stepped hole with a diameter decreasing from bottom to top; the central shaft comprises a circular seat and a connecting shaft fixed to the center of the upper surface of the circular seat; the lower part of the circular seat and the connecting shaft is fixed in the stepped hole; the upper part of the connecting shaft is provided with oppositely arranged alignment planes; the shape of the second through hole is adapted to the shape of the upper part of the connecting shaft; and the upper part of the connecting shaft passes through the second through hole.

[0007] The rotor core and magnetic steel pressing tool, wherein the two alignment planes are both penetrated by a transversely extending bolt, and the free end of the bolt is provided with a socket in which a positioning rod is inserted.

[0008] The rotor core and magnetic steel pressing tool, wherein the pressing member further comprises a pad ring sleeved on the connecting shaft, the lower surface of the pad ring abuts against the upper surface of the upper die, and the upper surface of the pad ring abuts against the rotating end of the rotating handle.

[0009] The rotor core and magnetic steel pressing tool, wherein the pressing members are arranged in a circular array.

[0010] The rotor core and magnetic steel pressing tool, wherein the alignment member comprises alignment rings arranged at the centers of the upper die and the lower die, and the circumferential outer walls of the two alignment rings are both provided with alignment notches, and the two alignment rings are both used for being inserted into the central hole of the rotor core, and the two alignment notches are both used for inserting the alignment strips of the rotor core.

[0011] The rotor core and magnetic steel pressing tool, wherein the opposite sides of the upper die and the lower die are both provided with positioning grooves corresponding to the magnetic steel grooves on the rotor core, and the positioning grooves are used for being inserted into the magnetic steel grooves.

[0012] The rotor core and magnetic steel pressing tool, wherein the opposite sides of the upper die and the lower die are both provided with a plurality of weight reduction grooves.

[0013] The rotor core and magnetic steel pressing tool, wherein the plurality of weight reduction grooves are arranged in a radial manner with the center of the upper die or the lower die as the center.

[0014] The rotor core and magnetic steel pressing tool, wherein the rotor core and magnetic steel pressing tool further comprises a turnover box, the bottom inner wall of the turnover box is provided with an accommodating groove for placing the lower die; the bottom inner part of the turnover box is further provided with a taking and placing groove in communication with the accommodating groove; and the opposite outer side walls of the turnover box are provided with handle grooves.

[0015] Beneficial effects:

[0016] The utility model provides a kind of pressing tool of rotor core and magnetic steel, by the alignment piece being set, ensure that rotor core is clamped between upper die and lower die with correct position, improve assembly accuracy;The compacting member being set is used to clamped fixed rotor core;The central shaft being set is used to pass through first through-hole and second through-hole;The rotating handle being set is used to make cam rotate more labor-saving;The cam being set can utilize cam to deepen pre-tightening force.Moreover, the use and disassembly of the above-mentioned pressing tool are very convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a kind of structure schematic view of pressing tool of rotor core and magnetic steel.

[0018] Figure 2 It is the sectional view of pressing tool of rotor core and magnetic steel.

[0019] Figure 3 It is the structure schematic view of central shaft.

[0020] Figure 4 It is the structure schematic view of lower die.

[0021] Figure 5 It is the structure schematic view of upper die.

[0022] Figure 6 It is the structure schematic view of rotor core.

[0023] Main element symbol explanation: 1-upper die, 11-second through-hole, 2-lower die, 21-first through-hole, 22-positioning groove, 23-weight reduction groove, 3-compact member, 31-central shaft, 311-round seat, 312-continuous shaft, 313-alignment plane, 32-rotating handle, 33-cam, 34-latch, 35-insert hole, 41-alignment ring, 42-alignment notch, 5-pad ring, 6-turnover box, 61-receiving groove, 62-take and place groove, 63-handles groove;

[0024] 10-rotor core, 101-central hole, 102-alignment strip, 103-magnetic steel groove. DETAILED DESCRIPTION

[0025] The utility model provides a kind of pressing tool of rotor core and magnetic steel, to make the purpose, technical scheme and effect of the utility model more clear, definite, the following referring to drawing and taking example to the utility model further detailed explanation.It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the protection scope of the utility model.

[0026] Please refer to Figure 1 , Figure 2The utility model provides a kind of pressing tool of rotor core and magnetic steel, including upper and lower arrangement upper die 1 and lower die 2, the opposite side of the upper die 1 and the lower die 2 is provided with alignment piece, two the alignment piece is used to make rotor core 10 with the upper die 1 and the lower die 2 concentric arrangement, please refer to Figure 4 And Figure 5 First through hole 21 is opened in the lower die 2, and second through hole 11 is opened in the upper die 1, the first through hole 21 and the second through hole 11 are all crossed by pressing piece 3, please refer to Figure 2 The pressing piece 3 includes center shaft 31 fixed in the first through hole 21 and the second through hole 11 and protruding from the center of the second through hole 11, and rotating handle 32 rotatably connected with the upper part of the center shaft 31 and detachably connected, the rotating end of the rotating handle 32 is provided as cam 33, when the rotating handle 32 rotates around the rotating end, the cam 33 is used to provide the pressing force for the downward movement of the upper die 1.

[0027] In practical application, the pressing piece 3 is detached from the upper die 1 and the lower die 2, the rotor core 10 is aligned with the alignment piece on the lower die 2, used to put the rotor core 10 into the lower die 2 with correct position, then the bottom edge of the channel steel is close to the magnetic steel slot 103 one by one, the magnetic steel is tightly attached to the magnetic steel slot 103 after confirming the direction of the channel steel is correct, the magnetic steel is drawn into the magnetic steel slot 103 of the rotor core 10 by using the potential energy of magnetic force. The alignment piece of the upper die 1 is aligned with the rotor core 10, and the upper die 1 is concentrically arranged with the rotor core 10 and the lower die 2. Then, the center shaft 31 is inserted into the first through hole 21 of the lower die 2, the rotor core 10 and the second through hole 11 of the upper die 1 in turn from bottom to top, and finally the rotating handle 32 is installed on the center shaft 31, at this time the handle end of the rotating handle 32 is located above, the hand of the operator is located at the handle end, the cam 33 is counterclockwise rotated by applying pressure to the handle end downward, the upper die 1 is gradually pressed downward by using the protruding position of the cam 33, and the rotor core 10 is clamped between the upper die 1 and the lower die 2, after the glue in the magnetic steel slot 103 is solidified, the magnetic steel can be fixed in the corresponding magnetic steel slot 103, and finally the pressing piece 3 is detached, so that the upper die 1 and the lower die 2 can be separated, and the rotor can be taken out.

[0028] The above pressing tool, by setting the alignment piece, ensures that the rotor core 10 is clamped between the upper die 1 and the lower die 2 with correct position, improves the assembly accuracy; the setting pressing piece 3 is used for clamping and fixing the rotor core 10; the setting center shaft 31 is used for crossing the first through hole 21 and the second through hole 11; the setting rotating handle 32 is used for relatively labor-saving rotation of the cam 33; the setting cam 33 can use the cam 33 to deepen the pre-tightening force. And the use and disassembly of the above pressing tool are very convenient.

[0029] Please refer to Figure 2 In some embodiments, the first through hole 21 is a stepped hole with a diameter decreasing from bottom to top; please refer to Figure 3 The central shaft 31 comprises a circular seat 311 and a connecting shaft 312 fixed to the center of the upper surface of the circular seat 311; the lower part of the circular seat 311 and the connecting shaft 312 is fixed in the stepped hole; the upper part of the connecting shaft 312 is provided with oppositely arranged alignment planes 313; please refer to Figure 4 and Figure 5 The shape of the second through hole 11 is adapted to the shape of the upper part of the connecting shaft 312, and the upper part of the connecting shaft 312 passes through the second through hole 11. By changing the diameter of the stepped hole, the circular seat 311 with a larger diameter can be fixed therein, so that the central shaft 31 is not lifted upward when the operator rotates the rotating handle 32. The alignment planes 313 are arranged on the opposite sides of the connecting shaft 312, and the shape of the second through hole 11 is limited, so that the connecting shaft 312 can only be inserted into the second through hole 11 at a set position, thereby ensuring the position of the rotating handle 32 connected to the connecting shaft 312 relative to the upper mold 1.

[0030] Please refer to Figure 2 In some embodiments, both of the alignment planes 313 are penetrated by a transversely extending bolt 34, which is rotationally connected to the rotating end of the rotating handle 32; the free end of the bolt 34 is provided with a insertion hole 35, in which a positioning rod (not shown in the figure) is inserted. After the central shaft 31 passes through the first through hole 21 and the second through hole 11, the bolt 34 is aligned with the hole position on the rotating handle 32 and the hole position on the connecting shaft 312, and then the positioning rod is inserted into the insertion hole 35 at the free end of the bolt 34, so that the rotating handle 32 can rotate around the bolt 34 to form a stable rotating fulcrum, making the rotating handle 32 rotate more smoothly around the bolt 34, avoiding shaking or deviation during the pressing operation, ensuring that the force of the cam 33 pressing the upper mold 1 is always vertical and uniform, and further improving the clamping effect and assembly precision.

[0031] Please refer to Figure 1 In some embodiments, the pressing member 3 further comprises a pad ring 5 sleeved on the connecting shaft 312, the lower surface of the pad ring 5 abuts against the upper surface of the upper mold 1, and the upper surface of the pad ring 5 abuts against the rotating end of the rotating handle 32. On the one hand, the pad ring 5 can play a buffering role, reducing the impact force of the rotating handle 32 on the upper mold 1 when the rotating handle 32 presses the upper mold 1 through the cam 33, avoiding damage to the upper mold 1 due to concentrated force, and prolonging the service life of the tooling; on the other hand, the pad ring 5 can uniformly distribute the pressing force applied by the rotating handle 32 to the upper mold 1, making the clamping force of the upper mold 1 on the rotor core 10 more uniform, further improving the clamping stability, and ensuring the rotor assembly quality.

[0032] Please refer to Figure 1 In some embodiments, the pressing members 3 are arranged in a plurality of circumferential arrays. That is, the adjacent pressing members 3 are arranged at equal angles, so that the rotor core 10 can be uniformly pressed at each circumferential position. Compared with a single or small number of pressing members 3, this arrangement can firmly clamp the rotor core 10 in all directions, effectively prevent the core from deforming or displacing due to uneven local stress, greatly improve the assembly accuracy, and is especially suitable for rotor products with high requirements for concentricity and flatness, further ensuring the stability and reliability of the product during high-speed operation.

[0033] Please refer to Figures 4-6 In some embodiments, the alignment members include alignment rings 41 arranged at the centers of the upper die 1 and the lower die 2. The circumferential outer walls of the two alignment rings 41 are each provided with an alignment notch 42, and the two alignment rings 41 are each used for inserting the central hole 101 of the rotor core 10, and the two alignment notches 42 are each used for inserting the alignment bar 102 of the rotor core 10. In use, the alignment bar 102 on the rotor core is aligned with the alignment notch 42 on the lower die 2, and then the central hole 101 is inserted into the alignment ring 41, so as to ensure that the rotor core 10 and the lower die 2 are concentric. Similarly, the alignment notch 42 of the upper die 1 is aligned with the alignment bar 102 and inserted, so as to ensure that the rotor core 10 and the upper die 1 are concentric.

[0034] Please refer to Figures 4-6 In some embodiments, the opposite sides of the upper die 1 and the lower die 2 are each provided with a positioning groove 22 corresponding to the magnetic steel groove 103 on the rotor core 10, and the positioning groove 22 is used for inserting the magnetic steel groove 103. When assembling the magnetic steel, the positioning groove 22 can be accurately inserted into the magnetic steel groove 103. This not only provides accurate guidance for the initial placement of the magnetic steel, avoiding the magnetic steel from deviating or misplacing during the placement process, but also further limits the movement of the magnetic steel during the subsequent clamping process, ensuring that the magnetic steel is always in the ideal installation position, thereby ensuring the stability and reliability of the electromagnetic performance of the rotor and effectively improving the product quality and consistency.

[0035] Please refer to Figures 4-5 In some embodiments, the opposite sides of the upper die 1 and the lower die 2 are each provided with a plurality of weight-reducing grooves 23. The arrangement of the weight-reducing grooves 23 can effectively reduce the overall weight of the tool. A lighter tool is convenient for workers to carry, install and disassemble, reduces labor intensity, improves work efficiency, and especially on a flow production line where the tool is frequently used, can reduce the physical exertion of workers.

[0036] Please refer to Figures 4-5In some embodiments, the plurality of weight-reducing grooves 23 are arranged in a radial manner with the center of the upper die 1 or the lower die 2. The plurality of weight-reducing grooves 23 are arranged in a radial manner with the center of the upper die 1 or the lower die 2, which fully considers the mechanical properties of the tool under stress. During clamping of the rotor core 10, the pressure borne by the tool can be more evenly dispersed to the periphery along the radial weight-reducing groove 23 structure, avoiding excessive stress concentration in a certain area, effectively reducing the risk of damage such as cracking and deformation of the tool due to long-term repeated stress, further improving the structural reliability and durability of the tool, and ensuring the continuity and stability of production operations.

[0037] Please refer to Figure 1 and Figure 2 In some embodiments, the pressing tool for the rotor core and the magnetic steel further comprises a turnover box 6, the inner wall of the bottom of the turnover box 6 is provided with a containing groove 61 for placing the lower die 2; the bottom of the turnover box 6 is further provided with a taking and placing groove 62 which is in communication with the containing groove 61. In use, the lower die 2 can be placed in the containing groove 61, and when it is necessary to take out or place the lower die 2, the taking and placing groove 62 can facilitate the operator to smoothly take out or place the lower die 2 from the containing groove 61 without affecting the operator's hands. The provision of the turnover box 6 facilitates the carrying of the pressing tool and the rotor.

[0038] Please refer to Figure 1 In some embodiments, the turnover box 6 is provided with a handle groove 63 on the opposite outer side wall. The handle groove 63 provides a placement position for the operator's hands, thereby facilitating the carrying of the pressing tool and the rotor to other positions.

[0039] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0041] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection or can communicate with each other;It can be direct connection, also can be indirectly connected through intermediate medium, can be the communication of two elements or the interaction relationship of two elements.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0042] It can be understood that for ordinary skilled in the art, the technical scheme and the inventive concept of the utility model can be replaced or changed equivalently, and all these changes or replacements shall belong to the protection scope of the utility model.

Claims

1. A pressing fixture for pressing a rotor core and a magnet, characterized in that, The application relates to a pressing device for a rotor core and magnetic steel, which comprises an upper die and a lower die arranged in a vertical mode, and alignment members arranged on the opposite sides of the upper die and the lower die, wherein the two alignment members are used for arranging the rotor core concentrically with the upper die and the lower die; a first through hole is arranged on the lower die and penetrates the upper and lower sidewalls of the lower die, a second through hole is arranged on the upper die and penetrates the upper and lower sidewalls of the upper die, the first through hole and the second through hole are penetrated by a pressing member, the pressing member comprises a central shaft fixed in the first through hole and the second through hole and protruding from the upper part of the second through hole, and a rotating handle detachably connected with the upper part of the central shaft; the rotating end of the rotating handle is provided with a cam, and when the rotating handle rotates around the rotating end, the cam is used for providing a downward pressing force for the upper die.

2. The press-fitting tool for a rotor core and a magnetic steel according to claim 1, characterized by, The first through hole is a stepped hole with a diameter decreasing from bottom to top; the central shaft comprises a circular seat and a connecting shaft fixed with the center of the upper surface of the circular seat; the lower part of the circular seat and the connecting shaft is fixed in the stepped hole; the upper part of the connecting shaft is provided with oppositely arranged alignment planes, the shape of the second through hole is matched with the shape of the upper part of the connecting shaft, and the upper part of the connecting shaft penetrates the second through hole.

3. The press-fit tooling for a rotor core and magnetic steel of claim 2, wherein, The two alignment planes are penetrated by a transversely extending bolt, and the bolt is rotationally connected with the rotating end of the rotating handle; the free end of the bolt is provided with a insertion hole, and a positioning rod is inserted into the insertion hole.

4. The press-fit tooling for a rotor core and magnetic steel of claim 2, wherein, The pressing member further comprises a pad ring sleeved on the connecting shaft, the lower surface of the pad ring is abutted with the upper surface of the upper die, and the upper surface of the pad ring is abutted with the rotating end of the rotating handle.

5. The press-fit tooling for a rotor core and magnetic steel of claim 4, wherein, The pressing member is arranged in a plurality of circular array modes.

6. The press-fit tooling for a rotor core and magnetic steel of claim 1, wherein, The alignment member comprises alignment rings arranged at the centers of the upper die and the lower die, the circumferential outer walls of the two alignment rings are provided with alignment notches, the two alignment rings are used for being inserted into the central holes of the rotor core, and the two alignment notches are used for inserting the alignment strips of the rotor core.

7. The press-fitting tool for a rotor core and a magnetic steel according to claim 1, characterized by The opposite sides of the upper die and the lower die are provided with positioning grooves corresponding to the magnetic steel grooves of the rotor core, and the positioning grooves are used for being inserted into the magnetic steel grooves.

8. The press-fit tooling for a rotor core and magnetic steel of claim 1, wherein, The opposite sides of the upper die and the lower die are provided with a plurality of lightening grooves.

9. The press-fit tooling for a rotor core and magnetic steel of claim 8, wherein, The plurality of lightening grooves are arranged in a radial mode with the center of the upper die or the lower die as the center.

10. The press-fit tooling for a rotor core and magnetic steel of claim 1, wherein, The pressing device for the rotor core and the magnetic steel further comprises a turnover box, the bottom inner wall of the turnover box is provided with a containing groove used for placing the lower die, the bottom inner part of the turnover box is further provided with a taking and placing groove in communication with the containing groove, and the opposite outer sidewalls of the turnover box are provided with handle grooves.

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