CN220358989U - Auxiliary device for press fitting of annular piece and rotor shaft - Google Patents
Auxiliary device for press fitting of annular piece and rotor shaft Download PDFInfo
- Publication number
- CN220358989U CN220358989U CN202320682165.6U CN202320682165U CN220358989U CN 220358989 U CN220358989 U CN 220358989U CN 202320682165 U CN202320682165 U CN 202320682165U CN 220358989 U CN220358989 U CN 220358989U
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- rotor shaft
- hole
- magnet
- movable column
- guide hole
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- 238000003825 pressing Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Manufacture Of Motors, Generators (AREA)
Abstract
The utility model relates to an auxiliary device for press fitting of an annular part and a rotor shaft, which comprises a base and a pressure head, wherein the base is provided with a positioning groove which is opened upwards and is used for positioning the outer edge of the annular part, the pressure head is provided with a guide hole which is opened downwards and is used for positioning the outer edge of the rotor shaft, the positioning groove and the guide hole are coaxially arranged, a first magnet which is transversely arranged is fixed in the guide hole, and the first magnet is sheet-shaped. The utility model has the advantages of higher precision of the rotor shaft during press fitting and applicability to press fitting of rotor shafts with different lengths.
Description
Technical Field
The utility model relates to the field of motor manufacturing, in particular to an auxiliary device for press-fitting of an annular part and a rotor shaft.
Background
In the manufacturing process of the motor, the rotor shaft in the stepped shaft type is required to be pressed into the annular member such as the iron core or the bearing, and the rotor shaft is generally pressed into the annular member such as the iron core or the bearing by a press machine, and the rotor shaft is required to be pre-positioned before being pressed.
The chinese patent with application number 202010728598.1 discloses a rotor both ends bearing equipment, including the last bearing reference column that is used for fixed upper bearing work piece and the lower bearing reference column that is used for fixed lower bearing work piece, the lower extreme of going up the bearing reference column is equipped with the top of going up the bearing reference column coaxial, the upper end of lower bearing reference column is equipped with the top down with the lower bearing reference column coaxial, it sets up and all can elastic expansion relatively with top down top, but top and lower top relative movement, the cover is equipped with the first annular kicking block that is used for supporting upper bearing work piece on the upper bearing reference column, the cover is equipped with the second annular kicking block that is used for supporting lower bearing work piece on the lower bearing reference column.
In the scheme, the upper bearing positioning column and the upper center are fixed together, the upper bearing positioning column is arranged in the first fixed cylinder in a sliding mode, a certain gap exists between the upper bearing positioning column and the first fixed cylinder, and coaxiality of the upper center can be affected when the gap between the upper bearing positioning column and the first fixed cylinder is large or the length of the upper center is long, so that fine deviation can occur during rotor shaft positioning, coaxiality of the upper center and a rotor shaft is difficult to guarantee, and normal use of the rotor shaft after assembly is affected.
Disclosure of Invention
The utility model aims to provide a ring-shaped piece and rotor shaft press-fitting auxiliary device which can enable a rotor shaft to have higher precision in press-fitting.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the auxiliary device for press fitting of the annular piece and the rotor shaft comprises a base and a pressure head, wherein the base is provided with a positioning groove which is opened upwards and used for positioning the outer edge of the annular piece, the pressure head is provided with a guide hole which is opened downwards and used for positioning the outer edge of the rotor shaft, the positioning groove and the guide hole are coaxially arranged, a first magnet which is transversely arranged is fixed in the guide hole, and the first magnet is sheet-shaped; when the upper end of the rotor shaft stretches into the guide hole of the pressure head, part or all of the peripheral outer wall of the rotor shaft is in contact with part or all of the peripheral inner wall of the guide hole, and the upper end face of the rotor shaft and the lower end face of the first magnet are magnetically attracted.
When the annular parts such as the bearing, the iron core and the like are pressed and assembled with the rotor shaft, a worker inserts the upper end of the rotor shaft into a guide hole of the pressure head, the outer edge is positioned by contacting the wall of the guide hole with the outer wall of the rotor shaft, and a first magnet in the guide hole is used for sucking the upper end face of the rotor shaft so as to fix the rotor shaft on the pressure head; meanwhile, workers place the annular parts such as the bearing, the iron core and the like in the positioning groove, and the circumferential outer wall of the annular part is contacted with the groove wall of the positioning groove to position the outer edge of the annular part; the pressure head moves downwards so as to press fit the end part of the rotor shaft and the annular piece; finally, the worker resets the pressure head, the rotor shaft is separated from the first magnet, and the worker takes out the rotor shaft with the ring-shaped piece pressed from the positioning groove.
According to the utility model, the circumferential outer wall of the workpiece is in direct contact with the inner wall of the tool, so that the tool is in surface-to-surface contact with the workpiece, the possibility of an excessive gap between the workpiece and the tool due to sliding configuration is reduced, and the positioning coaxiality and the press mounting coaxiality of the workpiece are improved. According to the utility model, the first magnet is fixed in the guide hole, so that when the first magnet is used for sucking the rotor shaft, the lower end face of the first magnet can be contacted with the upper end face of the rotor shaft, the left-right deflection of the rotor shaft is further limited, and the outer wall of the rotor shaft is contacted with the inner wall of the guide hole, so that the coaxiality of the rotor shaft is ensured, and the press-fitting precision is improved.
Preferably, the pressing head is fixedly provided with a top block, the top block is provided with a vertically arranged through hole, the lower section of the through hole is communicated with the guide hole, a movable column is inserted in the through hole, and the first magnet is arranged at the lower end of the movable column.
The movable column can be fixed with the top block in a plurality of modes such as thread fixing, glue fixing, welding fixing and the like, and then the position of the first magnet can be adjusted by adjusting the position of the movable column, so that the distance between the first magnet and the lower end face of the pressure head is adjusted, and the device is suitable for rotor shafts with different lengths.
Preferably, the movable column comprises a first movable column part and a second movable column part from top to bottom in sequence, the first magnet is fixed at the lower end of the second movable column part, the through hole comprises an upper through hole section and a lower through hole section, the width of the upper through hole section is larger than that of the lower through hole section, the first movable column part is always located in the upper through hole section, the second movable column part penetrates through the through hole to extend into the guide hole, a first spring is sleeved on the second movable column part, and the first spring is limited between the ejector block and the first magnet.
The movable column is provided with downward trend force through the arrangement of the first spring, so that the first magnet is not located in the deep position of the upper end of the guide hole, the first spring has certain elasticity, and the first magnet can have a certain space for the first spring to float up and down, so that the first magnet can be contacted with the end face of the rotor shaft under the condition that the axial length of the rotor shaft has certain error, and the accurate positioning of the rotor shaft is ensured.
Preferably, a sliding block is arranged at the lower end of the movable column, the sliding block is slidably matched in the guide hole, the circumferential outer wall of the sliding block is in clearance fit with the wall of the guide hole, and the first magnet is fixed on the lower end face of the sliding block.
The wider sliding block is arranged to increase the contact surface of the fixed part of the upper end surface of the first magnet, so that the fixing effect of the first magnet is better; simultaneously, can also lead the first magnet through the sliding block, avoid first magnet lower extreme face to take place the slope, assist guiding hole lower extreme outer fringe location to further improve the location effect of rotor shaft.
Preferably, when the upper end face of the rotor shaft magnetically attracts the lower end face of the first magnet, the axial face at the step of the rotor shaft is not in contact with the lower end face of the ram.
The rotor shaft is provided with a step, and when the rotor shaft is pressed, the lower end surface of the pressing head is propped against the axial surface of the step at the step of the rotor shaft, so that the pressing head moves downwards to drive the rotor shaft to press downwards; the device is provided with the first spring, so that the lower end face of the pressure head can be prevented from slamming against the step of the rotor shaft, and the first spring can play a role in buffering, so that a workpiece and the device are protected.
Preferably, the top block is detachably arranged in the upper end of the guide hole.
Can dismantle the setting between through kicking block and the guiding hole for when the rotor shaft to different length is fixed a position, can dismantle the kicking block, select not unidimensional kicking block or the movable column of different length to fix a position, thereby can not fix the movable column in order to carry out the upper and lower position adjustment of movable column.
Preferably, a groove is formed in the bottom of the positioning groove, and a second magnet is arranged in the groove.
The ring-shaped piece is attracted through the second magnet, so that the ring-shaped piece is prevented from being inclined by false touch during press fitting, the stability of the device during use can be improved, and high-precision press fitting is guaranteed.
Preferably, the pressure head is fixed with the lifting plate, the lifting plate is located above the base, a guide column vertically arranged is arranged on the side of the base, the lifting plate is slidably matched on the guide column, a second spring is sleeved outside the guide column, and the second spring is located between the base and the lifting plate.
The guide post is arranged, so that the pressure head can only vertically move up and down on the coaxial reference line, the accuracy of the pressure head in moving is improved, the inclination of the lower end surface of the pressure head can be avoided, and the effective press fitting of the rotor shaft and the annular piece can be ensured; the second spring is sleeved on the guide post, so that the pressing head can be conveniently pressed down and then restored to the original position, and the pressing head can be conveniently separated from the rotor shaft after being pressed.
Preferably, the bottom of the positioning groove is provided with a yielding hole which extends downwards to yield the end part of the rotor shaft.
The utility model has the advantages of higher precision of the rotor shaft during press fitting and applicability to press fitting of rotor shafts with different lengths.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1.
Fig. 2 is a schematic structural view of the ram and the lifter plate of embodiment 1.
Fig. 3 is a schematic structural diagram of the base of embodiment 1.
Fig. 4 is a front-rear sectional view of the ram and lifter plate of example 2.
Fig. 5 is a left-right sectional view of the ram and lifter plate of example 2.
Detailed Description
The utility model is further described below with reference to the drawings and specific embodiments.
Example 1
As shown in fig. 1 to 3, the embodiment discloses an auxiliary device for press-fitting an annular member and a rotor shaft, which comprises a base 1, a lifting plate 2 and a pressing head 3, wherein the lifting plate 2 is positioned above the base 1, the pressing head 3 is fixed on the lower side of the lifting plate 2 and positioned above the base 1, and the base 1 is arranged on a bottom plate 12. Guide posts 11 are respectively fixed on two sides of the bottom plate 12, the base 1 is located between the two guide posts 11, the lifting plate 2 is slidably matched on the guide posts 11, a second spring 111 is sleeved outside the guide posts 11, and the second spring 111 is a compression spring and located between the lifting plate 2 and the base 1.
As shown in fig. 1 and 3, the base 1 is provided with a positioning groove 13 with an upward opening, the bottom of the positioning groove 13 is provided with a downward extending groove 14 and a downward extending abdication hole 15, the groove 14 is annular and sleeved outside the abdication hole 15, the abdication hole 15 is positioned at the center of the bottom of the groove, and a second magnet (not shown in the figure) is arranged in the groove 14. The bottom plate 12 is provided with a positioning protrusion 121 extending upwards, the lower part of the base 1 is provided with a downward opening retaining groove 120, the shape and the size of the outer edge of the cross section of the positioning protrusion 121 are the same as those of the inner edge of the cross section of the retaining groove 120, the outer edge of the cross section of the positioning protrusion 121 is circular, and the base 1 can be replaced according to the sizes of the annular piece 200 and the rotor shaft 100. An opening 122 penetrating up and down is arranged in the center of the bottom plate 12, the opening 122 is positioned at the lower side of the yielding hole 15, and the inner diameter of the opening 122 is larger than that of the yielding hole 15.
As shown in fig. 1 and 2, the ram 3 is provided with a guide hole 31 penetrating up and down, and the guide hole 31 is provided coaxially with the positioning groove 13. The upper end internal fixation of guiding hole 31 has kicking block 9, and kicking block 9 is equipped with the through-hole that runs through from top to bottom, and the through-hole communicates with guiding hole 31, and the interlude has movable post 5 in the through-hole, and movable post 5 lower extreme is equipped with slider 53, and the lower terminal surface of slider 53 is fixed with first magnet 7.
Wherein, the through hole includes coaxial through hole upper segment 92 and through hole hypomere 93, and the diameter of through hole upper segment 92 is greater than the diameter of through hole hypomere 93. The movable column 5 comprises a movable column first part 51 and a movable column second part 52 from top to bottom, the width of the movable column first part 51 is larger than the diameter of the movable column second part 52, the movable column first part 51 is always positioned in the through hole upper section 92, and the movable column second part 52 passes through the through hole lower section 93 and is positioned in the guide hole 31. The sliding block 53 is slidably disposed in the guide hole 31, and the circumferential outer wall of the sliding block 53 is in clearance fit with the wall of the guide hole 31. The first magnet 7 is in a sheet shape, and the outer edge of the cross section of the first magnet 7 is in a round shape. The outer wall of the second portion 52 of the movable column and the inner wall of the lower section 93 of the through hole are provided with mutually matched screw structures, the second portion 52 of the movable column is provided with an external screw structure, and the lower section 93 of the through hole is provided with an internal screw structure.
When this ring of iron core is assembled with the rotor shaft, select the base of adaptation this model iron core, place the iron core in the constant head tank of base and fix a position through the mode of outer fringe location, and the second magnet carries out magnetic attraction to the iron core this moment.
A worker holds the rotor shaft 100 to insert the end of the rotor shaft 100 into the guide hole 31 of the ram 3, when the worker senses that the end of the rotor shaft 100 is in contact with the first magnet 7, the worker observes the lower end of the ram 3, if the axial surface of the step 101 of the rotor shaft 100 has a clearance with the lower end surface of the ram 3, the specification size is qualified and the rotor shaft 100 and the ram 3 are positioned in place; at this time, the upper end face of the rotor shaft 100 is in contact with the lower end face of the first magnet 7, and the circumferential outer wall of the rotor shaft 100 near the lower end of the ram 3 is positioned in clearance fit with the wall of the guide hole 31 to be positioned at the outer edge. The press is then started and the ram 3 is moved down to effect the press-fitting of the core-ring 200 with the rotor shaft 100. Wherein, when the rotor shafts 100 of different lengths are required to be press-fitted, the bolt-shaped movable column 5 is screwed, thereby adjusting the up-down position of the first magnet 7.
Example 2
As shown in fig. 4 and 5, this embodiment differs from embodiment 1 only in that: the ejector block 9 can be dismantled and set up in the guiding hole 31, ejector block 9 outer wall and guiding hole 31 inner wall clearance fit, and the cover is equipped with first spring 6 on the movable column 5 of this embodiment, does not be equipped with the helicitic texture between movable column 5 and the through-hole.
As shown in fig. 4 and 5, the pressing head 3 of the present embodiment is provided with a fixing portion 32 extending upward, the cross section of the fixing portion 32 is circular, the diameter of the fixing portion 32 is smaller than that of the pressing head 3, the lifting plate 2 is provided with a fixing hole 21 penetrating up and down, the circumferential outer wall of the fixing portion 32 contacts with the circumferential inner wall of the fixing hole 21, two opposite sides of the lifting plate 2 are provided with first bolt holes 23 extending transversely and communicating with the fixing hole 21, first locking bolts 22 are fixed in the first bolt holes 23 in a threaded manner, and the fixing portion 32 is fixed against two sides of the fixing portion 32 through the first locking bolts 22.
Wherein, the opposite two sides of the upper end of the pressing head 3 of this embodiment are provided with second bolt holes 94 extending transversely and communicating with the guiding holes 31, and second locking bolts 91 are fixed in the second bolt holes 94 by internal threads, and the two sides of the top block 9 are propped against by the second locking bolts 91 to fix the top block 9.
The first spring 6 is sleeved outside the second part 52 of the movable column, the first spring 6 is limited between the lower end surface of the top block 9 and the upper end surface of the sliding block 53, and the movable column 5 has downward trend force under the action of the first spring 6. The first spring 6 of the present embodiment is a compression spring.
A worker holds the rotor shaft 100 to insert the end of the rotor shaft 100 into the guide hole 31 of the ram 3, when the worker senses that the end of the rotor shaft 100 is in contact with the first magnet 7, the worker observes the lower end of the ram 3, if the axial surface of the step 101 of the rotor shaft 100 has a clearance with the lower end surface of the ram 3, the specification size is qualified and the rotor shaft 100 and the ram 3 are positioned in place; at this time, the upper end face of the rotor shaft 100 is in contact with the lower end face of the first magnet 7, and the circumferential outer wall of the rotor shaft 100 near the lower end of the ram 3 is positioned in clearance fit with the wall of the guide hole 31 to be positioned at the outer edge. The press is then started and the ram 3 is moved down to effect the press-fitting of the core-ring 200 with the rotor shaft 100. When the rotor shafts 100 with different lengths are required to be press-fitted, the pressing head 3 is disassembled, the first locking bolt 22 and the second locking bolt 91 are unscrewed, and then the top block 9 fixed with the movable columns 5 with different lengths is replaced.
The utility model has the advantages of higher precision of the rotor shaft during press fitting and applicability to press fitting of rotor shafts with different lengths.
Claims (9)
1. The auxiliary device for press fitting of the annular piece and the rotor shaft comprises a base and a pressure head, and is characterized in that the base is provided with a positioning groove which is opened upwards and used for positioning the outer edge of the annular piece, the pressure head is provided with a guide hole which is opened downwards and used for positioning the outer edge of the rotor shaft, the positioning groove and the guide hole are coaxially arranged, a first magnet which is transversely arranged is fixed in the guide hole, and the first magnet is sheet-shaped;
when the upper end of the rotor shaft stretches into the guide hole of the pressure head, part or all of the peripheral outer wall of the rotor shaft is in contact with part or all of the peripheral inner wall of the guide hole, and the upper end face of the rotor shaft and the lower end face of the first magnet are magnetically attracted.
2. The auxiliary device for press fitting of the annular piece and the rotor shaft according to claim 1, wherein a top block is fixed on the pressure head, the top block is provided with a vertically arranged through hole, the lower end of the through hole is communicated with the guide hole, a movable column is inserted in the through hole, and the first magnet is arranged at the lower end of the movable column.
3. The device for assisting in press fitting of an annular piece and a rotor shaft according to claim 2, wherein the movable column comprises a first movable column part and a second movable column part from top to bottom in sequence, the first magnet is fixed at the lower end of the second movable column part, the through hole comprises an upper through hole section and a lower through hole section, the width of the upper through hole section is larger than that of the lower through hole section, the first movable column part is always located in the upper through hole section, the second movable column part penetrates through the through hole and stretches into the guide hole, a first spring is sleeved on the second movable column part, and the first spring is limited between the top block and the first magnet.
4. A pressing auxiliary device for a ring-shaped member and a rotor shaft according to claim 2 or 3, wherein a sliding block is arranged at the lower end of the movable column, the sliding block is slidably arranged in the guide hole, the circumferential outer wall of the sliding block is in clearance fit with the wall of the guide hole, and the first magnet is fixed on the lower end face of the sliding block.
5. The press-fitting assisting device for a ring and a rotor shaft according to claim 4, wherein the axial surface at the step of the rotor shaft is not in contact with the lower end surface of the ram when the upper end surface of the rotor shaft is magnetically attracted to the lower end surface of the first magnet.
6. The apparatus according to claim 5, wherein the top block is detachably provided in an upper end of the guide hole.
7. A ring and rotor shaft press fit auxiliary device according to claim 1, 2 or 3, wherein the bottom of the positioning groove is provided with a groove, and the groove is internally provided with a second magnet.
8. A ring and rotor shaft press fit auxiliary device according to claim 1, 2 or 3, wherein the pressure head is fixed with a lifting plate, the lifting plate is located above the base, a vertically arranged guide post is arranged on the side of the base, the lifting plate is slidably fitted on the guide post, a second spring is sleeved on the guide post, and the second spring is located between the base and the lifting plate.
9. A ring and rotor shaft press fit assist device as claimed in claim 1, 2 or 3 wherein the detent groove bottom is provided with a relief hole extending downwardly to give way to the rotor shaft end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320682165.6U CN220358989U (en) | 2023-03-31 | 2023-03-31 | Auxiliary device for press fitting of annular piece and rotor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320682165.6U CN220358989U (en) | 2023-03-31 | 2023-03-31 | Auxiliary device for press fitting of annular piece and rotor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220358989U true CN220358989U (en) | 2024-01-16 |
Family
ID=89506071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320682165.6U Active CN220358989U (en) | 2023-03-31 | 2023-03-31 | Auxiliary device for press fitting of annular piece and rotor shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220358989U (en) |
-
2023
- 2023-03-31 CN CN202320682165.6U patent/CN220358989U/en active Active
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