CN210867318U - Loosely assembled welding rotor - Google Patents
Loosely assembled welding rotor Download PDFInfo
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- CN210867318U CN210867318U CN201922056012.7U CN201922056012U CN210867318U CN 210867318 U CN210867318 U CN 210867318U CN 201922056012 U CN201922056012 U CN 201922056012U CN 210867318 U CN210867318 U CN 210867318U
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- shell
- section
- rotor
- shaft hole
- loose
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Abstract
The utility model relates to a welding rotor device field especially relates to a loose formula welding rotor that joins in marriage. Comprises a shell, wherein the center of the shell is provided with a shaft hole assembled with a shaft center; the shaft center comprises an assembly section and an insertion section connected with the assembly section; the assembling section is in an inverted T shape, and the large-radius end of the assembling section is in clearance fit with the shaft hole; the contact part of the loosely-matched welded rotor motor shell is not easy to deform.
Description
Technical Field
The utility model relates to a welding rotor device field especially relates to a loose formula welding rotor that joins in marriage.
Background
The motor is the transliteration of an English motor, namely an electric motor and an engine. The working principle is that a starter rotor is driven to rotate by the forced rotation of an electrified coil in a magnetic field, and a pinion on the rotor drives an engine flywheel to rotate; however, the existing welding process aiming at the motor shell and the axle center has the following problems:
firstly, a joint of a motor shell and an axis is matched in a riveting mode and then is connected in a laser welding mode, and when the motor shell and the axis are connected in the laser welding mode in a conventional close-fitting mode, metal stress release is generated at the contact position of the motor shell and the axis, so that the plane and the vertical quantity of a product are varied;
secondly, the contact part of the motor shell and the axis riveting working section deforms, thereby causing some abnormal conditions.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not easy deformation's of motor housing contact department loose formula welding rotor that joins in marriage.
The technical scheme of the utility model as follows:
a loose-fitting type welding rotor comprises a shell, wherein a shaft hole assembled with an axis is formed in the center of the shell; the shaft center comprises an assembly section and an insertion section connected with the assembly section; the assembly section is in an inverted T shape, and the large-radius end of the assembly section is in clearance fit with the shaft hole.
The diameter of the shaft hole is 1.5mm-1.51mm, and the diameter of the shaft center assembling section is 1.49mm-1.493 mm.
The shaft hole of the shell is upwards protruded to form a boss.
And the top end of the shaft hole is provided with a tapered hole expansion.
The bottom surface of the shell is provided with a groove at the position corresponding to the lug boss.
The utility model has the advantages that: the motor shell and the axle center of the utility model are matched in a loose way before welding, and then a welding process is carried out, thus the welding speed can be improved, the productivity is improved, and the size requirement of the finished product after the verified welding is higher than the process design of normal close-fitting combination; and the following advantages also exist:
firstly, the design omits a riveting working section of the motor shell and the shaft center, and saves the cost of labor, manufacturing process and the like of a section of working procedure;
secondly, deformation of a motor shell contact part at the motor shell and an axis riveting working section is avoided, so that some abnormal conditions are caused;
third, experience the demonstration the utility model discloses no motor shell can produce the hidden danger that metal stress release leads to product self plane, vertical quantity variation with axle center contact department and exists.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Wherein: FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the cone-shaped reaming of the present invention;
in the attached drawings, 1 is a shell, 2 is an axis, 3 is an axis hole, 4 is a boss, 5 is a tapered counterbored hole, and 6 is a groove;
2.1 is the assembly section and 2.2 is the insertion section.
Detailed Description
Referring to fig. 1-2, a loose-fitting type welded rotor comprises a shell 1, a shaft hole 3 arranged in the center of the shell and assembled with a shaft center 2; the shaft center comprises an assembly section and an insertion section 2.2 connected with the assembly section 2.1; the assembly section is in an inverted T shape, and the large-radius end of the assembly section is in clearance fit with the shaft hole. The shaft hole is matched with the shaft center to connect the shaft center with the shell, the assembly section is used for being assembled and installed with the shell, and the insertion section is convenient for inserting the bearing; because the assembly section adopts the structure of falling T shape, be convenient for with the casing welding to assembly section and shaft hole adopt clearance fit, can make effectively avoid producing metal stress and lead to motor shell to warp.
The diameter H2 of the hole is 1.5mm-1.51mm, and the diameter H1 of the axle center assembling section is 1.49mm-1.493 mm. The hole diameter ratio is slightly bigger than axle center assembly section, not only can the convenient welding of clearance fit, practices thrift manufacturing cost moreover.
The shaft hole of the shell is upwards protruded to form a boss 4. The boss is arranged, so that the welding is convenient.
And a tapered hole expanding 5 is arranged at the top end of the shaft hole. Due to the arrangement of the taper hole expanding, on one hand, pre-positioning is convenient to achieve, and on the other hand, welding is convenient.
An upward groove 6 is arranged at the position of the bottom surface of the shell corresponding to the boss. Through the corresponding cooperation of recess and boss for the boss wholly is an upwards hunch structure, and is better with axle center cooperation effect when the assembly.
A Teflon coating is arranged on the outer surface of the shell; and a TPU layer is arranged outside the Teflon coating. The utility model greatly improves the anti-corrosion capability and anti-cavitation abrasion performance of the shell, prolongs the service life of the equipment and can reduce the risk of shell cracking; increasing the mechanical strength and load-bearing capacity of the device.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.
Claims (5)
1. A loose-fitting type welding rotor is characterized by comprising a shell, wherein the center of the shell is provided with a shaft hole assembled with an axis; the shaft center comprises an assembly section and an insertion section connected with the assembly section; the assembly section is in an inverted T shape, and the large-radius end of the assembly section is in clearance fit with the shaft hole.
2. The loose-fitting welded rotor of claim 1, wherein the axial bore has a diameter of 1.5-1.51 and the axial fitting section has a diameter of 1.49mm-1.493 mm.
3. The loose-fitting welded rotor of claim 1, wherein the shaft hole of the housing is upwardly protruded to form a boss.
4. The loose-fitting welding rotor of claim 1, wherein the top end of the shaft bore is tapered.
5. The loose-fitting welding rotor of claim 1, wherein the bottom surface of the shell is provided with a groove at a position corresponding to the boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056012.7U CN210867318U (en) | 2019-11-25 | 2019-11-25 | Loosely assembled welding rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056012.7U CN210867318U (en) | 2019-11-25 | 2019-11-25 | Loosely assembled welding rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210867318U true CN210867318U (en) | 2020-06-26 |
Family
ID=71309369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922056012.7U Active CN210867318U (en) | 2019-11-25 | 2019-11-25 | Loosely assembled welding rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210867318U (en) |
-
2019
- 2019-11-25 CN CN201922056012.7U patent/CN210867318U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |