CN212526748U - Planetary wheel bearing press-fitting structure of starting motor - Google Patents
Planetary wheel bearing press-fitting structure of starting motor Download PDFInfo
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- CN212526748U CN212526748U CN202020958725.2U CN202020958725U CN212526748U CN 212526748 U CN212526748 U CN 212526748U CN 202020958725 U CN202020958725 U CN 202020958725U CN 212526748 U CN212526748 U CN 212526748U
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Abstract
The utility model discloses a planet wheel bearing press mounting structure of a starting motor, which comprises a base, a mandrel, a pressure head and a guide slide block; a cavity capable of containing the guide sliding block is arranged in the base, the mandrel is arranged in the cavity, the upper end of the mandrel extends out of the base, and the guide sliding block is sleeved on the mandrel and can slide along the mandrel; during press mounting, the planet gear is placed on the top surface of the base, the bearing is placed on the top surface of the guide sliding block, and the pressure head moves downwards along the mandrel to press the bearing into the planet gear. The utility model discloses a set up the direction slider in the pressure equipment structure and come the location benchmark of unified planet wheel and bearing, the direction slider gets into the planet wheel before the planet wheel is impressed to the bearing, utilizes the direction slider to rectify in advance the planet wheel, lets the axis of planet wheel and dabber align to improve the assembly precision between the bearing that impresses afterwards and the planet wheel; the utility model discloses the pressure equipment is convenient, can used repeatedly, can guarantee the uniformity and the pressure equipment quality of pressure equipment, can show improvement finished product quality.
Description
Technical Field
The utility model belongs to the technical field of the automobile parts assembly technique and specifically relates to a starter motor's planet wheel bearing pressure equipment structure.
Background
The matching structure of the planet wheel and the bearing is an important component of the starting motor, and the assembling precision of the planet wheel and the bearing plays a critical role in the performance of the starting motor. When the assembly of planet wheel and bearing is carried out in the present trade, generally all adopt the pressure equipment frock to impress the bearing in the planet wheel, but what the pressure equipment frock adopted at present adopts is that the mode of manual alignment is fixed a position, and there is the error in the location benchmark of planet wheel and bearing, causes the axiality deviation, destroys the bearing very easily during the pressure equipment, seriously influences finished product quality.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the planetary wheel bearing press-fitting structure of the starting motor is high in press-fitting precision.
For solving the technical problem the utility model discloses the technical scheme who adopts is: the planetary wheel bearing press-fitting structure of the starting motor comprises a base, a mandrel, a pressure head and a guide sliding block; a cavity capable of containing the guide sliding block is arranged in the base, the mandrel is arranged in the cavity, the upper end of the mandrel extends out of the base, and the guide sliding block is sleeved on the mandrel and can slide along the mandrel; during press mounting, the planet wheel is placed on the top surface of the base, the mandrel penetrates through an inner hole of the planet wheel, the guide sliding block enters the inner hole of the planet wheel, and the pressure head presses the bearing into the inner hole of the planet wheel along with the downward pressing of the mandrel.
Further, the method comprises the following steps: the guide sliding block is of a cylindrical structure, and the outer diameter of the guide sliding block is matched with the diameter of an inner hole of the planet wheel.
Further, the method comprises the following steps: the guide sliding block is in clearance fit with the mandrel; the pressure head is in clearance fit with the mandrel.
Further, the method comprises the following steps: still include reset spring, reset spring cover is on the dabber and is located the direction slider below.
Further, the method comprises the following steps: the cavity is formed by communicating a spring mounting hole in the upper half part with a mandrel positioning hole in the lower half part; the reset spring is arranged in the spring mounting hole, and the bottom end of the mandrel is arranged in the mandrel positioning hole.
Further, the method comprises the following steps: the bottom end of the mandrel is a fixed end, and the fixed end is in interference fit with the mandrel positioning hole; the outer diameter of the return spring is smaller than that of the fixed end.
Further, the method comprises the following steps: the top surface of base is equipped with recessed planet wheel constant head tank, and planet wheel constant head tank and dabber coaxial setting.
The utility model has the advantages that: the utility model discloses a set up the direction slider in the pressure equipment structure and come the location benchmark of unified planet wheel and bearing, the direction slider gets into the planet wheel before the planet wheel is impressed to the bearing, utilizes the direction slider to rectify in advance the planet wheel, lets the axis of planet wheel and dabber align to improve the assembly precision between the bearing that impresses afterwards and the planet wheel; the utility model discloses the pressure equipment is convenient, can used repeatedly, can guarantee the uniformity and the pressure equipment quality of pressure equipment, can show improvement finished product quality.
Drawings
Fig. 1 is a cross-sectional view of the present invention;
labeled as: 100-base, 110-cavity, 111-spring mounting hole, 112-mandrel positioning hole, 120-planet wheel positioning groove, 200-mandrel, 210-fixed end, 300-pressure head, 400-guide sliding block, 500-planet wheel, 600-bearing and 700-reset spring.
Detailed Description
In order to facilitate understanding of the present invention, the following description is further provided with reference to the accompanying drawings.
As shown in fig. 1, the planetary wheel bearing press-fitting structure of the starting motor disclosed in the present invention has a cavity 110 formed in a base 100, a mandrel 200 is fixed in the cavity 110, the upper end of the mandrel 200 extends out of the base 100, and a guiding slider 400 is sleeved on the mandrel 200; the mandrel 200 is of a cylindrical structure, the guide sliding block 400 is in clearance fit with the mandrel 200 so that the guide sliding block 400 can slide up and down along the mandrel 200, and the outer diameter of the guide sliding block 400 is matched with the diameter of an inner hole of the planet gear 500 to be pressed. When the planet wheel 500 and the bearing 600 are pressed and assembled, the planet wheel 500 is placed on the top surface of the base 100, the upper end of the mandrel 200 penetrates through the inner hole of the planet wheel 500, the guide sliding block 400 is inserted into the inner hole of the planet wheel 500, the bearing 600 is sleeved on the mandrel 200, then a pneumatic press or other pressing and assembling pressure equipment is used for applying pressure to the pressure head 300 with a cylindrical structure, the pressure head 300 moves downwards along the mandrel 200, the bearing 600 is pressed into the inner hole of the planet wheel 500, and the guide sliding block 400 is pushed into the cavity 110 from the inner hole of the planet wheel 500 by the bearing 600; the ram 300 is in a clearance fit with the mandrel 200 such that the ram 300 can slide up and down the mandrel 200. Because the utility model discloses in set up direction slider 400, in the hole that inserts planet wheel 500 with direction slider 400 before the pressure equipment, direction slider 400 can rectify planet wheel 500, make the central line of planet wheel 500 align with the central line of dabber 200, thereby guarantee that planet wheel 500 and follow-up bearing 600 who replaces direction slider 400 have unanimous location benchmark, ensure the accurate assembly of planet wheel 500 and bearing 600, can not cause the damage to bearing 600 because of the axiality deviation when the pressure equipment.
In order to make it easier for the guide shoe 400 to be inserted into the inner bore of the planet 500, the top and ground edges of the guide shoe 400 may be rounded. The utility model discloses can used repeatedly, accomplish when last pressure equipment work, the direction slider 400 is impressed in the cavity 11 of base 100, carries out next pressure equipment during operation, need let direction slider 400 answer the normal position in advance, the utility model discloses in realize the reseing of direction slider 400 through setting up reset spring 700, as shown in fig. 1, sheathe reset spring 700 on dabber 200, put into cavity 110 with reset spring 700, the bottom of direction slider 400 is connected with reset spring 700's upper end, and the produced elasticity of reset spring 700 pressurized can help direction slider 400 to reset like this, is convenient for carry out next pressure equipment work fast.
The middle cavity 110 of the utility model is composed of an upper part and a lower part, and comprises a spring mounting hole 111 of the upper half part and a mandrel positioning hole 112 of the lower half part, wherein the reset spring 700 is positioned in the spring mounting hole 111, and the bottom end of the mandrel 200 is arranged in the mandrel positioning hole 112; the bottom end of the mandrel 200 is a fixed end 210, and the fixed end 210 is in interference fit with the mandrel positioning hole 112, so that the fixed end 210 can be clamped into the mandrel positioning hole 112 to be kept stable; the outer diameter of the return spring 700 is smaller than the diameter of the fixing end 210, and the lower end of the return spring 700 may be fixed to the fixing end 210 in order to ensure stability when the return spring 700 expands and contracts.
In addition, before the location of planet wheel 500 is carried out by using guide slider 400, it is preferable to carry out rough location on planet wheel 500, a concave planet wheel positioning groove 120 is arranged on the top surface of the base, a circular groove hole is adopted in planet wheel positioning groove 120, the diameter of planet wheel positioning groove 120 is matched with the outer diameter of planet wheel 500, planet wheel positioning groove 120 and mandrel 200 are coaxially arranged, and planet wheel 500 is directly placed in planet wheel positioning groove 120 before press fitting, so that rough location can be carried out on planet wheel 500.
Claims (7)
1. Start motor's planet wheel bearing pressure equipment structure, its characterized in that: comprises a base (100), a mandrel (200), a pressure head (300) and a guide slide block (400); a cavity (110) capable of accommodating the guide sliding block (400) is arranged in the base (100), the mandrel (200) is arranged in the cavity (110), the upper end of the mandrel (200) extends out of the base (100), and the guide sliding block (400) is sleeved on the mandrel (200) and can slide along the mandrel (200); during press mounting, the planet wheel (500) is placed on the top surface of the base (100) so that the mandrel (200) penetrates through an inner hole of the planet wheel (500), the guide sliding block (400) enters the inner hole of the planet wheel (500), and the press head (300) presses the bearing (600) into the inner hole of the planet wheel (500) along with the mandrel (200).
2. A planetary wheel bearing press-fitting structure of a starting motor as set forth in claim 1, wherein: the guide sliding block (400) is of a cylindrical structure, and the outer diameter of the guide sliding block (400) is matched with the diameter of an inner hole of the planet wheel (500).
3. A planetary wheel bearing press-fitting structure of a starting motor as set forth in claim 2, wherein: the guide sliding block (400) is in clearance fit with the mandrel (200); the pressure head (300) is in clearance fit with the mandrel (200).
4. A planetary wheel bearing press-fitting structure of a starting motor as set forth in claim 1, wherein: the device also comprises a return spring (700), wherein the return spring (700) is sleeved on the mandrel (200) and is positioned below the guide sliding block (400).
5. A planetary wheel bearing press-fitting structure of a starter motor as claimed in claim 4, wherein: the cavity (110) is formed by communicating a spring mounting hole (111) in the upper half part with a mandrel positioning hole (112) in the lower half part; the reset spring (700) is positioned in the spring mounting hole (111), and the bottom end of the mandrel (200) is arranged in the mandrel positioning hole (112).
6. A planetary wheel bearing press-fitting structure of a starting motor as set forth in claim 5, wherein: the bottom end of the mandrel (200) is a fixed end (210), and the fixed end (210) is in interference fit with the mandrel positioning hole (112); the outer diameter of the return spring (700) is smaller than the diameter of the fixed end (210).
7. A planetary wheel bearing press-fitting structure of a starting motor as set forth in claim 1, wherein: the top surface of base (100) is equipped with recessed planet wheel constant head tank (120), planet wheel constant head tank (120) and dabber (200) coaxial setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020958725.2U CN212526748U (en) | 2020-05-29 | 2020-05-29 | Planetary wheel bearing press-fitting structure of starting motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020958725.2U CN212526748U (en) | 2020-05-29 | 2020-05-29 | Planetary wheel bearing press-fitting structure of starting motor |
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| Publication Number | Publication Date |
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| CN212526748U true CN212526748U (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020958725.2U Active CN212526748U (en) | 2020-05-29 | 2020-05-29 | Planetary wheel bearing press-fitting structure of starting motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113858114A (en) * | 2021-11-04 | 2021-12-31 | 吉林大学 | Pinch roller assembly combined die and using method thereof |
| CN114193399A (en) * | 2021-12-14 | 2022-03-18 | 苏州长风航空电子有限公司 | Coaxial anti-rotation revolving body structure component assembling tool and assembling method |
-
2020
- 2020-05-29 CN CN202020958725.2U patent/CN212526748U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113858114A (en) * | 2021-11-04 | 2021-12-31 | 吉林大学 | Pinch roller assembly combined die and using method thereof |
| CN114193399A (en) * | 2021-12-14 | 2022-03-18 | 苏州长风航空电子有限公司 | Coaxial anti-rotation revolving body structure component assembling tool and assembling method |
| CN114193399B (en) * | 2021-12-14 | 2024-07-12 | 苏州长风航空电子有限公司 | Assembling tool and assembling method for coaxial anti-rotation rotator structure assembly |
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