CN220970522U - Punching pin for trimming die - Google Patents
Punching pin for trimming die Download PDFInfo
- Publication number
- CN220970522U CN220970522U CN202322667707.5U CN202322667707U CN220970522U CN 220970522 U CN220970522 U CN 220970522U CN 202322667707 U CN202322667707 U CN 202322667707U CN 220970522 U CN220970522 U CN 220970522U
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- CN
- China
- Prior art keywords
- section
- punching
- hole
- external diameter
- die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004080 punching Methods 0.000 title claims abstract description 33
- 238000009966 trimming Methods 0.000 title claims abstract description 21
- 238000009434 installation Methods 0.000 claims description 10
- 238000003754 machining Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 208000034656 Contusions Diseases 0.000 description 1
- 208000034526 bruise Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The utility model discloses a punching pin for a trimming die, which comprises a limiting section, a mounting section and a punching section which are coaxially and sequentially arranged from top to bottom, wherein the outer diameter of the limiting section is larger than that of the mounting section, and the outer diameter of the mounting section is larger than that of the punching section. The advantage is simple structure, can effectively avoid the product to be cut, avoids influencing work efficiency.
Description
Technical Field
The utility model relates to a fitting for a trimming die, in particular to a punching pin for a trimming die.
Background
The trimming die is a stamping die which uses a stamping die to trim the edge of an working element so as to enable the working element to have a certain height, diameter and shape. The trimming die is mainly used for trimming the edge of the stretching piece, so that the end face is smooth and attractive, and the next step of assembly is facilitated. The existing multiple die-casting moulds need to remove burrs on holes, so that a punching pin is installed on a trimming die mould and used for deburring, the existing punching pin used on the trimming die mould at present generally comprises a positioning installation section and a punching section which are coaxially arranged from top to bottom, but due to the influences of factors such as errors, processing errors of products and environment and the like possibly existing in the assembly of the trimming die mould, the punching pin with the conventional structure is easy to cut the products, so that multiple die repair and die matching are needed, and the working efficiency is influenced.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the punching pin for the trimming die, which has a simple structure and can effectively avoid product cuts.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides a cut off die is round pin that punches a hole for mould, includes that top-down is coaxial sets gradually spacing section, installation section and the section of punching a hole, the external diameter of spacing section be greater than the external diameter of installation section, the external diameter of installation section be greater than the external diameter of section of punching a hole, the below coaxial guide section that is provided with of section of punching a hole, the guide section be the round platform body that top-down external diameter gradually reduces, the biggest external diameter of guide section with the external diameter of section of punching a hole equal.
The bottom of the guide section is provided with a rounding angle. Because there is the error that the probability cut off die mould probably exists when the assembly, the processing error of mould etc. factor leads to the hole site to deviate too greatly, and during the processing the punching pin rocks too greatly and leads to the guide section not to get into the hole perfectly, consequently set up the chamfer in the bottom of guide section, when the edge on the chamfer touching the hole earlier, can protect the product to some extent, be unlikely to hurt the product.
The radius of the rounding angle is 0.5-2 mm. The hole position is deviated due to possible errors of the trimming die during assembly, machining errors of the die and the like, and the radius of the bottom rounding of the guide section needs to be arranged according to the size of the hole. The diameters of some holes are small, generally 3-4 mm, and the radius of the rounding can be as small as 0.5mm due to the fact that the die drawing angle of the guide section is added, and at the moment, the length of the guide section can be shortened due to overlarge rounding, so that the hole cutting is not facilitated; and some holes are 50mm, at the moment, the round corners can be rounded to be large, the holes are cut in an auxiliary mode, and the phenomenon that the gravity center is stable and the structure of products outside the holes is damaged is avoided.
The draft angle of the guide section is 10-20 degrees. The drawing angle of the guide section is too small to have an effect, and too large to play a role in guiding, and the drawing angle of the guide section is designed to be 10-20 degrees, so that hole position deviation caused by various reasons can be basically met, and meanwhile, the guide section cannot fail and cause bruise of products.
Compared with the prior art, the utility model has the advantages that: simple structure, the below coaxial setting of section of punching a hole is a guide section, the guide section is big-end-up's round platform body, provide the guide effect to the downward movement of round pin that punches a hole through the guide section, when mould and product have fine assembly or machining error, the guide section at first contacts with the hole and downwards, in the in-process that descends, can bring the section of punching a hole and carry out the fine setting of a position, when the guide section enters into downthehole completely, can bring the section of punching a hole and accurately enter into downthehole the removal processing of burr, can effectively avoid the problem of the cutting that the section direct contact product that punches a hole leads to like this, also need not repair many times, join in marriage the mould, reduced the influence to work efficiency.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
Fig. 3 is a schematic cross-sectional view of the present utility model mounted on a trimming die to cooperate with deburring holes in a product.
Description of the embodiments
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1-2, a punching pin for a trimming die comprises a limiting section 1, an installation section 2 and a punching section 3 which are coaxially and sequentially arranged from top to bottom, wherein the outer diameter of the limiting section 1 is larger than that of the installation section 2, the outer diameter of the installation section 2 is larger than that of the punching section 3, a guide section 4 is coaxially arranged below the punching section 3, the guide section 4 is a truncated cone with gradually smaller outer diameter from top to bottom, and the maximum outer diameter of the guide section 4 is equal to that of the punching section 3.
In this particular embodiment, the bottom of the guide section 4 is provided with rounded corners 41. Because the hole position deviation is overlarge due to the possible error of the small-probability trimming die during assembly, the machining error of the die and the like, and the guide section 4 cannot enter the hole well due to overlarge shaking of the punching pin during machining, the bottom of the guide section 4 is provided with the rounding corner 41, and when the rounding corner 41 touches the edge on the hole, products can be protected from being damaged.
In this particular embodiment, the radius of the rounded corners 41 is 0.5-2 mm. The hole position is deviated due to possible errors in assembling the trimming die, machining errors of the die, etc., and the radius of the bottom rounding 41 of the guide section 4 needs to be arranged according to the size of the hole. The diameter of some holes is small, generally 3-4 mm, and the radius of the rounding 41 can be as small as 0.5mm due to the fact that the die drawing angle of the guide section 4 is added, at the moment, the length of the guide section 4 can be shortened due to overlarge rounding, and the hole cutting is not facilitated; and some holes are 50mm, at the moment, the round corners can be rounded to be large, the holes are cut in an auxiliary mode, and the phenomenon that the gravity center is stable and the structure of products outside the holes is damaged is avoided.
In this particular embodiment, the draft angle α of the guide section 4 is 10 ° to 20 °. The die drawing angle alpha of the guide section 4 is too small to have an effect, and too large to play a role in guiding, and the die drawing angle alpha of the guide section 4 is designed to be 10-20 degrees, so that hole site deviation caused by various reasons can be basically met, and meanwhile, the die drawing angle alpha cannot fail and cause damage to products.
Fig. 3 is a schematic cross-sectional structure diagram of a punching pin mounted on a trimming die and matched with a hole on a product for deburring, wherein an upper die plate a, a knife edge fixing plate B, the punching pin, a pre-pressing block C and the product D are sequentially arranged from top to bottom in the figure, and a hole D1 of the product D is deburred through a punching section 3 of the punching pin.
Claims (4)
1. The utility model provides a cut off die is round pin that punches a hole for mould, includes that top-down is coaxial sets gradually spacing section, installation section and the section of punching a hole, the external diameter of spacing section be greater than the external diameter of installation section, the external diameter of installation section be greater than the external diameter of section of punching a hole, its characterized in that the below of section of punching a hole coaxial be provided with the direction section, the direction section be the round platform body that top-down external diameter gradually reduces, the biggest external diameter of direction section with the external diameter of section of punching a hole equal.
2. A punch pin for a trimming die set as defined in claim 1, wherein the bottom of said guide section is provided with a rounded corner.
3. A punch pin for a trimming die set as defined in claim 2 wherein the radius of the rounded corner is 0.5-2 mm.
4. A punch pin for a trimming die as defined in claim 1 wherein the die draft angle of the guide section is 10 ° to 20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322667707.5U CN220970522U (en) | 2023-09-28 | 2023-09-28 | Punching pin for trimming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322667707.5U CN220970522U (en) | 2023-09-28 | 2023-09-28 | Punching pin for trimming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220970522U true CN220970522U (en) | 2024-05-17 |
Family
ID=91056937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322667707.5U Active CN220970522U (en) | 2023-09-28 | 2023-09-28 | Punching pin for trimming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220970522U (en) |
-
2023
- 2023-09-28 CN CN202322667707.5U patent/CN220970522U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |