CN212976427U - Polygonal inner hole stamping die for gear rotating shaft of electric tool - Google Patents
Polygonal inner hole stamping die for gear rotating shaft of electric tool Download PDFInfo
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- CN212976427U CN212976427U CN202021226327.8U CN202021226327U CN212976427U CN 212976427 U CN212976427 U CN 212976427U CN 202021226327 U CN202021226327 U CN 202021226327U CN 212976427 U CN212976427 U CN 212976427U
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Abstract
The utility model relates to an electric tool gear shaft polygon hole press die, the characteristic is: comprises a lower module and an upper module; a lower limiting die of the lower die block is arranged in a lower die body positioning cavity, and a guide cover is arranged in the lower die body from top to bottom and is locked and fixed on the table surface of the machine; the gear rotating shaft is arranged in a lower die body positioning cavity, the punching die is arranged in a die pad, the spring and the guide die are arranged in the die pad, the pressing plate is locked on the end face of the die pad through a screw, and the spring and the guide die are fixed in a third section of die pad cavity arranged in the die pad together. The utility model can effectively stabilize the gear rotating shaft and has high precision in punching the polygonal inner hole, and can effectively help the punching die to demold due to the spring assembly arranged in the middle, thereby avoiding the gear rotating shaft from being blocked in the punching die and improving the production efficiency; and has the advantages of compact structure, convenient operation, cost saving and the like.
Description
Technical Field
The utility model relates to a hole press die, especially an electric tool gear pivot polygon hole press die for the punching press of gear pivot belongs to electric tool technical field.
Background
In the manufacture of electric tools, the advantages of accurate transmission, high efficiency, compact structure, reliable operation, long service life and the like of a gear transmission mechanism make the gear transmission mechanism become the most widely applied transmission mode in various modern equipment. The gear rotating shaft is an important part in the gear transmission mechanism. Sometimes, the space on the whole transmission mechanism is limited, and when too many fasteners cannot be mounted, the gear rotating shaft is used for tapping, and the space problem is solved by using the corresponding auxiliary design of a polygonal inner hole and the like. When the gear rotating shaft is used for manufacturing the polygonal inner hole, the rotating shaft is bent when the polygonal inner hole is punched due to the fact that the rotating shaft is thin or the precision of a machine table is poor and the like, and the size of the polygonal inner hole is not up to standard.
Disclosure of Invention
An object of the utility model is to provide an electric tool gear pivot polygon hole press die can effectually stabilize and the high punching press polygon hole of precision to can effectual help cut-out press mould demould, avoided the gear pivot card in the cut-out press mould, thereby can improve production efficiency.
According to the utility model provides a technical scheme: electric tool gear shaft polygon hole press die, the characteristic is: comprises a lower module and an upper module; the lower module comprises a gear rotating shaft, a lower die body, a guide cover and a lower limiting die; the upper module comprises a punching die, a guide die, a die pad, a pressing plate, a spring and a screw;
the lower limiting die is arranged in a lower die body positioning cavity, the guide cover is arranged in the lower die body from top to bottom, the concentricity between the lower die body positioning cavity and a first aperture arranged in the guide cover is adjusted, and the lower limiting die is locked and fixed on the table top of the machine; the gear rotating shaft is arranged in the lower die body positioning cavity, and the height of the lower limiting die is adjusted to enable the gear rotating shaft to be lower than the plane of the guide cover; the punching die is arranged in the die cushion, the spring and the guide die are arranged in the die cushion, the pressing plate is locked on the end face of the die cushion through a screw, and the spring and the guide die are fixed in a third section of die cushion cavity arranged in the die cushion together.
As a further improvement of the present invention, the concentricity of the lower mold body and the guiding cover is: within 0.02.
As a further improvement of the present invention, the distance that the gear rotation shaft is lower than the guide cover plane is: 3-5 mm.
As a further improvement, gear shaft and lower mould body location die cavity clearance fit, clearance fit is: 0.015-0.03 mm.
As a further improvement, the lower limiting die and the lower die body are in clearance fit, and the clearance is set as: 0.01-0.03 mm.
As a further improvement of the utility model, the punching die is in a stepped structure, and the stepped structure is composed of a first punching die, a second punching die, a third punching die, a first punching die plane, a second punching die plane and a punching die limiting plane; wherein the first punching die is in the shape of the outline of a polygonal inner hole; and four screw countersunk holes communicated with the second punching die plane are formed in the first punching die plane, and the angles among the four screw countersunk holes are 90 degrees.
As a further improvement of the present invention, a guide mold stepped cavity is provided in the guide mold, and a guide mold first section cavity, a guide mold second section cavity, a limiting surface, a first guide mold shape, a second guide mold shape, a guide mold end surface, a guide mold bottom surface, and a guide mold stop surface are provided in the guide mold stepped cavity; wherein, the first section die cavity of guide mould is clearance fit with first punching die appearance, and the clearance is set for: 0.01-0.02 mm.
As the utility model discloses a further improvement, guide mould second section die cavity is clearance fit with the second punching die appearance, and the clearance is set for: 0.05-0.1 mm.
As a further improvement of the utility model, a communicated multi-section die cushion cavity is arranged in the die cushion, and a first section die cushion cavity, a second section die cushion cavity, a third section die cushion cavity, a first die cushion cavity plane, a second die cushion cavity plane and a die cushion end face are arranged in the die cushion cavity; two threaded holes are respectively formed in the plane of the first die pad cavity, two threaded holes are respectively formed in the end face of the die pad, and the angles among the threaded holes are 90 degrees respectively.
As a further improvement, be equipped with in the clamp plate and run through hole and four through screw clearance holes, the angle is 90 degrees between four screw clearance holes, and corresponding with the screw hole of establishing in the die pad terminal surface.
Compared with the prior art, the utility model its characteristics and advantage mainly show:
the utility model discloses electric tool gear pivot polygon hole press die, because the mutual guide action of direction lid and guide mould is equipped with, can be effectual carry on the work of stable and high punching press polygon hole of precision to the gear pivot; the spring assembly is arranged in the punching die, so that the punching die can be effectively assisted in demoulding, the gear rotating shaft is prevented from being clamped in the punching die, and the production efficiency can be improved; and has the advantages of simple and compact structure, convenient operation, cost saving and the like.
Drawings
Fig. 1 is a sectional view of the gear shaft of the present invention.
Fig. 2 is a cross-sectional view of the lower mold body of the present invention.
Fig. 3 is a cross-sectional view of the guide cover of the present invention.
Fig. 4 is a cross-sectional view of the lower limiting die of the present invention.
Fig. 5 is a sectional view of the punching die of the present invention.
Fig. 6 is a cross-sectional view of the guide die of the present invention.
Fig. 7 is a cross-sectional view of the die pad of the present invention.
Fig. 8 is a cross-sectional view of the pressing plate of the present invention.
Fig. 9 is the structural schematic diagram of the polygonal inner hole punching die of the present invention.
Description of reference numerals: 1-gear rotating shaft, 2-lower die body, 3-guide cover, 4-lower limiting die, 5-punching die, 6-guide die, 7-die pad, 8-pressing plate, 9-spring and 10-screw.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 9, the polygonal inner hole punching die for the gear shaft of the electric tool of the present invention specifically includes a lower die block and an upper die block. The lower module comprises a gear rotating shaft 1, a lower die body 2, a guide cover 3 and a lower limiting die. The upper module comprises a guide die 6 of the punching die 5, a die pad 7, a pressure plate 8, a spring 9 and a screw 10.
The lower limiting die 4 is placed into the lower die body positioning cavity 2-1, the guide cover 3 is placed into the lower die body 2 from top to bottom, the concentricity between the lower die body positioning cavity 2-1 and the first aperture 3-2 arranged in the guide cover 3 is adjusted, and the lower limiting die is locked and fixed on the machine table board; the gear rotating shaft 1 is placed into the lower die body positioning cavity 2-1, and the height of the lower limiting die 4 is adjusted to enable the gear rotating shaft 1 to be lower than the plane of the guide cover; the punching die 5 is placed in the die pad 7, the spring 9 and the guide die 6 are placed in the die pad 7, the pressing plate 8 is locked on the end face of the die pad through the screw 10, and the spring 9 and the guide die 6 are fixed in a third section of die pad cavity 7-4 arranged in the die pad 7 together.
As shown in fig. 1-2, a positioning cavity 2-1 is disposed in the lower mold body 2 and is matched with and penetrates through an outer diameter 1-1 of the gear rotating shaft 1, in order to ensure better stability and accuracy when the gear rotating shaft 1 punches an inner polygonal hole, the outer diameter 1-1 of the gear rotating shaft is in clearance fit with the positioning cavity 2-1 of the lower mold body, the accuracy has relative requirements, and the clearance fit accuracy is as follows: 0.015-0.03 mm.
As shown in fig. 3, a stepped cavity 3-1 is formed in the guide cover 3. The guiding cover 3 has a central guiding function when the upper module goes down for punching operation, and in order to ensure the concentricity requirement of the gear rotating shaft 1 and the inner polygonal hole, the first aperture 3-2 arranged in the guiding cover 3 and the positioning cavity 2-1 arranged in the lower die body 2 need to reach the concentricity requirement within 0.02 after assembly. Therefore, a proper gap is required to be left when the second aperture 3-3 and the third aperture 3-4 arranged in the guide cover 3 are matched with the first outer diameter 2-2 and the second outer diameter 2-3 of the lower die body arranged in the lower die body 2. So as to conveniently adjust the concentricity during the die filling operation, and the end surface is provided with a guide cover plane 3-5.
As shown in fig. 4, the shape 4-1 of the lower limiting die 4 is in clearance fit with the positioning cavity 2-1 of the lower die body 2, and the clearance is set as follows: the end face 4-2 of the lower limiting die 4 is matched with the clearance of 0.01-0.03 mm and used for propping against the bottom face 1-2 of the gear rotating shaft 1 in the production process.
As shown in fig. 5, the punching die 5 is designed to be a stepped shape structure, and the stepped shape structure is composed of a first punching die shape 5-1, a second punching die shape 5-2, a third punching die shape 5-3, a first punching die plane 5-4, a second punching die plane 5-5 and a punching die limiting surface 5-6. Wherein the shape 5-1 of the first punching die is the profile shape of a polygonal inner hole. And four screw counter bores 5-7 which are communicated with the second punching die plane 5-5 are arranged on the first punching die plane 5-4, and the angle between the screw counter bores 5-7 is 90 degrees.
As shown in fig. 6, a guide mold stepped cavity 6-1 is arranged in the guide mold 6, and a guide mold first section cavity 6-2, a guide mold second section cavity 6-3, a limiting surface 6-4, a first guide mold profile 6-5, a second guide mold profile 6-6, a guide mold end surface 6-7, a guide mold bottom surface 6-8 and a guide mold stop surface 6-9 are arranged in the guide mold stepped cavity 6-1. Wherein, the first section cavity 6-2 of the guide die is in clearance fit with the first punching die outline 5-1, and the clearance is set as: the clearance fit of 0.01-0.02 mm, the second section cavity 6-3 of the guide die and the appearance 5-2 of the second punching die are in clearance fit, and the clearance is set as follows: the clearance of 0.05-0.1 mm is matched.
As shown in fig. 7, a through multi-section die pad cavity 7-1 is arranged in the die pad 7, and a first section die pad cavity 7-2, a second section die pad cavity 7-3, a third section die pad cavity 7-4, a first die pad cavity plane 7-5, a second die pad cavity plane 7-6 and a die pad end face 7-7 are arranged in the die pad cavity 7-1. Two threaded holes 7-8 are respectively arranged in the first die pad cavity plane 7-5, two threaded holes 7-9 are respectively arranged in the die pad end face 7-7, the angle between the threaded holes is 90 degrees, and the threaded holes arranged in the first die pad cavity plane 7-5 are required to correspond to screw countersunk holes 5-7 arranged in the punching die plane 5.
As shown in FIG. 8, a through inner hole 8-1 and 4 through screw clearance holes 8-2 are arranged in the pressure plate 8, and the interval angle of the screw clearance holes is 90 degrees and corresponds to a threaded hole arranged in the end face 7-7 of the die pad.
As shown in fig. 9, during the mold assembly, the shape 4-1 of the lower limiting mold 4 is aligned with the lower mold position cavity 2-1 set in the lower mold body 2, and then the lower limiting mold is placed into the positioning cavity 2-1, the guide cover 3 is placed into the lower mold body 2 from top to bottom, and the concentricity between the positioning cavity 2-1 and the first aperture 3-2 set in the guide cover 3 is adjusted to be within 0.02, and then the lower limiting mold is locked and fixed to the machine surface.
And (3) putting the gear rotating shaft 1 into the lower die body positioning cavity 2-1, and adjusting the height of the lower limiting die 4 to enable the gear rotating shaft 1 to be lower than the plane of the guide cover by 3-5 mm at a distance of 3-5 mm.
After aligning a punching die 5 with a first section die pad cavity 7-2 and a second section die pad cavity 7-3 arranged on a die pad 7, placing the die pad, and after aligning a second punching die plane 5-5 arranged on the punching die 5 with the first die pad cavity plane 7-5, locking a screw 10 into a threaded hole 7-8 arranged in the first die pad cavity plane 7-5 through a screw countersunk hole 5-7 arranged on the first punching die plane 5-4, and combining the punching die 5 and the die pad 7 together.
The spring 9 and the guide die 6 are put into a third section die pad cavity 7-4 arranged in the die pad 7, and at the moment, a first section cavity 6-2 of the guide die arranged in the guide die 6 is aligned with the first punching die profile 5-1. After the pressure plate 8 passes through the first guide die 6-5 and is flush with the die pad end face 7-7, the screw 10 is locked in the threaded hole 7-9 arranged in the die pad end face 7-7 through the screw clearance hole 8-2, and the spring 9 and the guide die 6 are fixed in a third section of die pad cavity 7-4 arranged in the die pad 7 together. When locking and fixing, attention is paid to the first guide die profile 6-5 to ensure that the first guide die profile can smoothly enter the first aperture 3-2 formed in the guide cover 3. At this time, the first punching die profile 5-1 of the punching die 5 is set in the first stage cavity 6-2 of the guide die because the spring 9 will push the upper guide die 6 outward until the set guide die stop surface 6-9 is flush with the press plate 8.
When the upper module moves downwards during punching operation, the first guide die appearance 6-5 arranged on the guide die 6 preferentially enters the first aperture 3-2 arranged on the guide cover 3 and then presses the end face 1-3 arranged on the gear rotating shaft 1 by the guide die end face 6-7 arranged on the guide die 6, so that the gear rotating shaft 1 is stably operated, and the gear rotating shaft 1 is prevented from being deviated and deformed by pressure during punching. As the upper die block continues to move downwards, the spring 9 is compressed due to the obstruction of the guide die 6, and the first punching die profile 5-1 of the punching die 5 extends out of the first section cavity 6-2 of the guide die to perform punching operation. After the operation is finished, the upper module piece moves upwards, the guide die 6 is continuously pressed by the pressure of the spring 9 and is tightly attached to the end face of the gear rotating shaft 1, and the punching die 5 moves upwards until the first section cavity 6-2 of the guide die, so that the action is used for assisting the punching die 5 in demoulding. This completes one cycle of operation.
The utility model discloses an electric tool gear pivot polygon hole press die because there is the mutual guide action of direction lid 3 with guide mould 6, can be effectual 1 stabilize gear pivot and the work of the high punching press polygon hole of precision owing to set up the spring 9 subassembly in the middle of, can effectual help punching die 5 demold, avoided 1 card of gear pivot in punching die 5 to production efficiency has been improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides an electric tool gear shaft polygon hole press die which characterized by: comprises a lower module and an upper module; the lower module comprises a gear rotating shaft (1), a lower die body (2), a guide cover (3) and a lower limiting die (4); the upper module comprises a punching die (5), a guide die (6), a die pad (7), a pressing plate (8) and a spring (9);
the lower limiting die (4) is arranged in a lower die body positioning cavity (2-1), the guide cover (3) is arranged in the lower die body (2) from top to bottom, the concentricity between the lower die body positioning cavity (2-1) and a first aperture (3-2) arranged in the guide cover (3) is adjusted, and the lower limiting die body positioning cavity and the guide cover are locked and fixed on the machine table board; the gear rotating shaft (1) is arranged in the lower die body positioning cavity (2-1), and the height of the lower limiting die (4) is adjusted to enable the gear rotating shaft (1) to be lower than the plane of the guide cover; the punching die (5) is arranged in the die pad (7), the spring (9) and the guide die (6) are arranged in the die pad (7), the pressing plate (8) is locked on the end face of the die pad through a screw (10), and the spring (9) and the guide die (6) are fixed in a third section of die pad cavity (7-4) arranged in the die pad (7) together.
2. The polygonal inner hole punching die for the gear rotating shaft of the electric tool as claimed in claim 1, wherein: the concentricity of the lower die body (2) and the guide cover (3) is within 0.02.
3. The polygonal inner hole punching die for the gear rotating shaft of the electric tool as claimed in claim 1, wherein: the distance that the gear rotating shaft (1) is lower than the guide cover plane (3-5) is as follows: 3-5 mm.
4. The polygonal inner hole punching die for the gear rotating shaft of the electric tool as claimed in claim 1, wherein: the gear rotating shaft (1) is in clearance fit with the lower die body positioning cavity (2-1), and the clearance is as follows: 0.015-0.03 mm.
5. The polygonal inner hole punching die for the gear rotating shaft of the electric tool as claimed in claim 1, wherein: lower spacing mould (4) and lower die body (2) are clearance fit, and the clearance is: 0.01-0.03 mm.
6. The polygonal inner hole punching die for the gear rotating shaft of the electric tool as claimed in claim 1, wherein: the appearance of the punching die (5) is of a stepped structure.
7. The polygonal inner hole punching die for the gear rotating shaft of the electric tool as claimed in claim 1, wherein: a guide die step type cavity (6-1) is arranged in the guide die (6), and a guide die first section cavity (6-2) and a guide die second section cavity (6-3) are arranged in the guide die step type cavity (6-1); wherein, the first section cavity (6-2) of the guide die is in clearance fit with the first punching die (5-1), and the clearance is as follows: 0.01-0.02 mm.
8. The die for punching the polygonal inner hole of the gear rotating shaft of the electric tool as claimed in claim 7, wherein: the second section cavity (6-3) of the guide die is in clearance fit with the profile (5-2) of the second punching die, and the clearance is set as follows: 0.05-0.1 mm.
9. The polygonal inner hole punching die for the gear rotating shaft of the electric tool as claimed in claim 1, wherein: the die cushion (7) is internally provided with a multi-section die cushion cavity (7-1) communicated with each other.
10. The polygonal inner hole punching die for the gear rotating shaft of the electric tool as claimed in claim 1, wherein: a through inner hole (8-1) and four through screw clearance holes (8-2) are arranged in the pressure plate (8), and the angles among the four screw clearance holes are 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021226327.8U CN212976427U (en) | 2020-06-29 | 2020-06-29 | Polygonal inner hole stamping die for gear rotating shaft of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021226327.8U CN212976427U (en) | 2020-06-29 | 2020-06-29 | Polygonal inner hole stamping die for gear rotating shaft of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212976427U true CN212976427U (en) | 2021-04-16 |
Family
ID=75426115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021226327.8U Active CN212976427U (en) | 2020-06-29 | 2020-06-29 | Polygonal inner hole stamping die for gear rotating shaft of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212976427U (en) |
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2020
- 2020-06-29 CN CN202021226327.8U patent/CN212976427U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 214105 No. 62, Jiaoyang East Road, Xishan mechanical equipment Industrial Park, Wuxi City, Jiangsu Province Patentee after: Qingzhi (Wuxi) powder casting and Forging Co., Ltd Address before: 214101 No.11 HUAFA Road, Dongting street, Xishan District, Wuxi City, Jiangsu Province Patentee before: Qingzhi (Wuxi) powder casting and Forging Co., Ltd |
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| CP02 | Change in the address of a patent holder |