CN213602528U - Iron core press fitting tool - Google Patents
Iron core press fitting tool Download PDFInfo
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- CN213602528U CN213602528U CN202022160873.2U CN202022160873U CN213602528U CN 213602528 U CN213602528 U CN 213602528U CN 202022160873 U CN202022160873 U CN 202022160873U CN 213602528 U CN213602528 U CN 213602528U
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Abstract
The invention relates to an iron core press-fitting tool, which comprises a lower die and an upper die, wherein the upper end surface of the lower die is provided with a groove for placing an iron core, the iron core is provided with an axial through hole for assembling an armature shaft, the lower die is also provided with a first hole corresponding to the axial through hole on the iron core, one end part of the first hole is communicated with the groove, the iron core is placed in the groove, and the axial through hole is communicated with the first hole; the upper die and the lower die are arranged oppositely up and down, a second hole is formed in the upper die, and the second hole corresponds to the first hole in position; a guide mechanism for guiding the press-fitting direction is arranged among the lower die, the iron core and the upper die; this frock is through setting up the pressure equipment mould, and sets up the recess on the lower mould, places the iron core, and highly be higher than the iron core with the recess and make the iron core can not the compression deformation in the pressure equipment process, guarantees the axiality through guiding mechanism.
Description
Technical Field
The invention relates to a tool, in particular to an iron core press-fitting tool.
Background
The middle of the motor iron core is required to be provided with an armature shaft, the armature shaft is required to be installed through press mounting, namely, an axial hole is formed in the middle of the iron core, then the armature shaft is fixed in the axial hole in the middle of the iron core through press mounting, in the prior art, the iron core is directly pressed by a press machine by aligning the armature shaft with the axial hole or by adopting a simple die, the iron core directly receives the great press mounting force of the press machine in the pressing-in process, and the iron core has the hidden danger of compressive deformation; in addition, the coaxiality of the upper die and the iron core is not limited, and the press mounting easily causes larger errors; the iron core is deformed under pressure, the coaxiality error is large, and the dynamic balance of the rotor is large. In the production process, during the subsequent dynamic balance correcting process, the automatic equipment cannot correct the dynamic balance amount due to the fact that the initial dynamic balance amount of a plurality of products is too large, and the production efficiency is influenced.
Disclosure of Invention
The invention provides an iron core press-fitting tool, aiming at solving the problems that an iron core is deformed under pressure and has large coaxiality error when the iron core is press-fitted with an armature shaft, the tool is provided with a press-fitting die, a groove is formed in a lower die, the iron core is placed, the height of the groove is higher than that of the iron core, so that the iron core cannot be deformed under pressure in the press-fitting process, and the coaxiality is ensured through a guide mechanism.
The technical scheme adopted by the invention is as follows: an iron core press-fitting tool comprises
The upper end surface of the lower die is provided with a groove for placing an iron core, the iron core is provided with an axial through hole for assembling an armature shaft, the lower die is also provided with a first hole corresponding to the axial through hole in the iron core, one end part of the first hole is communicated with the groove, the iron core is placed in the groove, and the axial through hole is communicated with the first hole;
the upper die and the lower die are arranged oppositely up and down, a second hole is formed in the upper die, and the second hole corresponds to the first hole in position;
the groove on the lower die is a step-shaped groove and comprises a first step groove and a second step groove, the iron core is arranged in the second step groove, the height of the second step groove is greater than that of the iron core, the inner diameter of the first step groove is greater than that of the second step groove, an axial boss is arranged on the end face of one end, facing the lower die, of the upper die, and the outer diameter of the boss is arranged between the inner diameter of the first step groove and the inner diameter of the second step groove; a guide mechanism for guiding the press-fitting direction is arranged among the lower die, the iron core and the upper die;
the armature shaft penetrates through the axial through hole of the iron core from the second hole of the upper die and extends into the first hole of the lower die.
Furthermore, the guide mechanism comprises a positioning pin and a positioning hole, the positioning pin is arranged on the lower die, the positioning holes corresponding to the positioning pin are arranged on the iron core and the upper die, and the positioning pin penetrates through the positioning holes in the iron core and the upper die to position the lower die, the iron core and the upper die.
Furthermore, the positioning pin and the positioning hole are in clearance fit.
Further, the diameter of the end of the armature shaft is smaller than the diameter of the intermediate shaft body.
Furthermore, a bottom support is arranged at the bottom end of the first hole of the lower die and used for receiving the pressed armature shaft.
Furthermore, the locating pin is provided with a plurality of, and a plurality of locating pins parallel armature shaft sets up, and a plurality of locating pins circumference sets up around armature shaft.
The beneficial effects produced by the invention comprise: the lower die is provided with the groove for placing the iron core, the height of the groove is higher than that of the iron core, so that the iron core cannot be deformed under pressure in the press fitting process, the coaxiality in the press fitting process is ensured by arranging the guide mechanism, and the outer diameter of the boss is arranged between the inner diameter of the first-step groove and the inner diameter of the second-step groove to realize press fitting positioning.
Drawings
FIG. 1 is a schematic perspective view of a tooling of the present invention;
FIG. 2 is a cross-sectional view of the tooling of the present invention;
FIG. 3 is a cross-sectional view of the tooling of the present invention after press fitting;
FIG. 4 is a view showing the structure of the lower mold of the present invention;
in the figure, 1, an upper die, 2, a lower die, 3, a first hole, 4, a second hole, 5, a first-step groove, 6, a second-step groove, 7, a boss, 8, a bottom support, 9, a positioning pin, 10, a positioning hole, 11, an iron core, 12 and an armature shaft are arranged.
Detailed Description
The present invention is explained in further detail below with reference to the drawings and the specific embodiments, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
As shown in the figure, the press-fitting tool for the iron core 11 comprises a lower die 2 and an upper die 1, wherein a groove for placing the iron core 11 is formed in the upper end surface of the lower die 2, an axial through hole for assembling an armature shaft 12 is formed in the iron core 11, a first hole 3 corresponding to the axial through hole in the iron core 11 is further formed in the lower die 2, one end of the first hole 3 is communicated with the groove, the iron core 11 is placed in the groove, and the axial through hole is communicated with the first hole 3; the upper die 1 and the lower die 2 are arranged oppositely up and down, a second hole 4 is formed in the upper die 1, the second hole 4 corresponds to the first hole 3 in position, and the first hole 3 and the second hole 4 are used for positioning the armature shaft 12;
the groove on the lower die 2 is a step-shaped groove and comprises a first step groove 5 and a second step groove 6 which are coaxially arranged up and down, the iron core 11 is arranged in the second step groove 6, the height of the second step groove 6 is greater than that of the iron core 11, the inner diameter of the first step groove 5 is greater than that of the second step groove 6, an axial boss 7 is arranged on the end surface of one end of the upper die 1 facing the lower die 2, the outer diameter of the boss 7 is arranged between the inner diameter of the first step groove 5 and the inner diameter of the second step groove 6, and is preferably slightly smaller than the inner diameter of the first step groove 5; a guide mechanism for guiding the press-fitting direction is arranged among the lower die 2, the iron core 11 and the upper die 1;
the armature shaft 12 extends from the second hole 4 of the upper die 1 to the first hole 3 of the lower die 2 through the axial through hole of the iron core 11.
The iron core 11 and the armature shaft 12 are positioned through the upper die 2 and the lower die 2, the coaxiality of the shaft hole of the iron core 11 and the armature shaft 12 is guaranteed, and the height of the second-step groove 6 is larger than that of the iron core 11, so that the iron core 11 cannot be deformed under pressure in the press mounting process.
In some embodiments, the guiding mechanism includes a positioning pin 9 and a positioning hole 10, the positioning pin 9 is disposed on the lower die 2, the positioning hole 10 corresponding to the positioning pin 9 is disposed on the iron core 11 and the upper die 1, the positioning pin 9 passes through the positioning hole 10 on the iron core 11 and the upper die 1 to position the lower die 2, the iron core 11 and the upper die 1, and the positioning pin 9 enables one-dimensional movement along the positioning hole 10 during press-fitting, so that oriented press-fitting and coaxiality are ensured.
In some embodiments, the positioning pin 9 and the positioning hole 10 are clearance fit. The armature shaft 12 has a smaller diameter at its end than the diameter of the intermediate shaft body.
In some embodiments, a bottom support 8 is provided at the bottom end of the first hole 3 of the lower die 2, and the bottom support 8 is used for receiving a pressed armature shaft 12.
In some embodiments, the positioning pins 9 are provided in a plurality, the positioning pins 9 are arranged in parallel with the armature shaft 12, and the positioning pins 9 are circumferentially arranged on the periphery side of the armature shaft 12.
The working process is as follows:
during press mounting, the iron core 11 is limited and mounted in the lower die 2 of the tool through the positioning pin 9, the upper die 1 and the lower die 2 are mounted in a small clearance fit mode, then the armature shaft 12 is inserted, the press machine is started, and the armature shaft 12 is pressed on the iron core 11; after the iron core 11 is pressed, the pressing head of the pressing machine moves upwards, the upper die 1 of the tool is taken down, the pressed workpiece is taken down, and the next state to be pressed is entered.
According to the invention, the iron core 11 to be pressed is arranged in the lower die 2 of the tooling, and the depth of the second groove for placing the iron core 11 is set to a certain depth dimension, so that the iron core 11 is prevented from being excessively extruded and deformed in the pressing process to influence the dynamic balance of the rotor; the upper die 1 of the tool is provided with the boss 7, the press-fitting position of the iron core 11 is ensured, an axial guide structure which is in small radial clearance fit with the mounting hole of the lower die 2 is reserved, and the coaxiality of the upper die 2 and the lower die 2 is ensured. After the upper die 2 and the lower die 2 are sleeved, the central hole is inserted into the armature shaft 12 to be pressed, and the armature shaft 12 is pressed in place on a press machine; and after the press mounting is finished, the upper die 1 of the tool is taken down, and then the press-mounted workpiece is taken down.
According to the invention, through the optimized structural design, the depth of the second groove for placing the iron core 11 is greater than the height of the iron core 11, so that the influence of the iron core 11 directly subjected to overlarge extrusion deformation on the dynamic balance of the rotor in the press mounting process is avoided; the upper die 2 and the lower die 2 are matched through a small clearance, so that the coaxiality of press mounting is well ensured; in addition, the diameters of the upper die 2 and the lower die 2 are properly increased (about 1.6-1.7 times of the outer diameter of the iron core 11), the rigidity of the tool is improved, the contact area with a press machine is increased, the influence of unevenness caused by abrasion of an equipment platform or unevenness after a pressure head is abraded on perpendicularity is effectively improved, and the initial dynamic balance amount of the rotor is remarkably reduced.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the claimed invention.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the content of the embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the technical scope of the present invention, and any changes and modifications made are within the protective scope of the present invention.
Claims (7)
1. The utility model provides an iron core pressure equipment frock which characterized in that: comprises that
The upper end surface of the lower die is provided with a groove for placing an iron core, the iron core is provided with an axial through hole for assembling an armature shaft, the lower die is also provided with a first hole corresponding to the axial through hole in the iron core, one end part of the first hole is communicated with the groove, the iron core is placed in the groove, and the axial through hole is communicated with the first hole;
the upper die and the lower die are arranged oppositely up and down, a second hole is formed in the upper die, and the second hole corresponds to the first hole in position;
the groove on the lower die is a step-shaped groove and comprises a first step groove and a second step groove which are coaxially arranged, the iron core is arranged in the second step groove, the height of the second step groove is greater than that of the iron core, the inner diameter of the first step groove is greater than that of the second step groove, an axial boss is arranged on the end face of one end, facing the lower die, of the upper die, and the outer diameter of the boss is arranged between the inner diameter of the first step groove and the inner diameter of the second step groove; a guide mechanism for guiding the press-fitting direction is arranged among the lower die, the iron core and the upper die;
the armature shaft penetrates through the axial through hole of the iron core from the second hole of the upper die and extends into the first hole of the lower die.
2. The iron core press-fitting tool according to claim 1, characterized in that: the guide mechanism comprises a positioning pin and a positioning hole, the positioning pin is arranged on the lower die, the positioning hole corresponding to the positioning pin is arranged on the iron core and the upper die, and the positioning pin penetrates through the positioning hole on the iron core and the upper die to position the lower die, the iron core and the upper die.
3. The iron core press-fitting tool according to claim 2, characterized in that: the positioning pin and the positioning hole are in clearance fit.
4. The iron core press-fitting tool according to claim 1, characterized in that: the diameter of the end part of the armature shaft is smaller than that of the middle shaft body.
5. The iron core press-fitting tool according to claim 1, characterized in that: and a bottom support is arranged at the bottom end of the first hole of the lower die and used for receiving the pressed armature shaft.
6. The iron core press-fitting tool according to claim 2, characterized in that: the locating pin is provided with a plurality of, and a plurality of locating pin parallel armature shaft sets up, and a plurality of locating pin circumference sets up around the armature shaft.
7. The iron core press-fitting tool according to claim 1, characterized in that: go up mould and lower mould and be the cylinder structure, the external diameter of going up mould and lower mould is 1.6~1.7 times of iron core external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022160873.2U CN213602528U (en) | 2020-09-28 | 2020-09-28 | Iron core press fitting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022160873.2U CN213602528U (en) | 2020-09-28 | 2020-09-28 | Iron core press fitting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213602528U true CN213602528U (en) | 2021-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022160873.2U Active CN213602528U (en) | 2020-09-28 | 2020-09-28 | Iron core press fitting tool |
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| CN (1) | CN213602528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114161120A (en) * | 2021-12-24 | 2022-03-11 | 成都华川电装有限责任公司 | Crimping frock of concatenation combination iron core |
-
2020
- 2020-09-28 CN CN202022160873.2U patent/CN213602528U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114161120A (en) * | 2021-12-24 | 2022-03-11 | 成都华川电装有限责任公司 | Crimping frock of concatenation combination iron core |
| CN114161120B (en) * | 2021-12-24 | 2024-04-02 | 成都华川电装有限责任公司 | Crimping frock of concatenation combination iron core |
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