CN214184890U - Progressive die for inner chamfering of die - Google Patents
Progressive die for inner chamfering of die Download PDFInfo
- Publication number
- CN214184890U CN214184890U CN202022660549.7U CN202022660549U CN214184890U CN 214184890 U CN214184890 U CN 214184890U CN 202022660549 U CN202022660549 U CN 202022660549U CN 214184890 U CN214184890 U CN 214184890U
- Authority
- CN
- China
- Prior art keywords
- hole
- die
- groove
- base
- station
- 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.)
- Active
Links
Images
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The utility model discloses a mould upgrades of interior chamfer of mould, including last mould and lower mould, its characterized in that: still include the station of punching a hole, lead the exterior angle station, the station of punching a hole and lead the interior angle station, the station of punching a hole is including setting up first ejector pin on the last mould and the first base of setting on the lower mould, when going up the mould and pushing down, first ejector pin dashes and wears the stamping workpiece and form the through-hole, set up on the first base with through-hole outer wall complex first recess, it is in including setting up to lead the exterior angle station first kicking block on the last mould is in with the setting second base on the lower mould, first kicking block with the inner wall of through-hole contacts, be provided with the second recess on the second base, the second recess with the outer wall of stamping workpiece contacts, the bottom border of second recess is provided with interior chamfer.
Description
Technical Field
The utility model relates to a stamping die especially relates to a stamping die of punching press screw.
Background
The through hole that needs punching press screw thread to use on a lot of stamping parts, this kind of through hole when the punching press, need set up an interior chamfer at the end, the effect of this chamfer is convenient going on of follow-up tapping flow. In the prior step of arranging the chamfer on the through hole, the stamping part is taken out and then put into a special lathe after the through hole is stamped, burrs at the tail end of the through hole are turned off, and the chamfer can be machined while the burrs are turned, so that time and labor are wasted.
For this reason, many people also want to directly punch chamfers in the stamping die, but during stamping, because burrs and flanges can appear at the tail ends of the through holes during stamping, the chamfers can be directly punched if the burrs and flanges are not removed, and the burrs and flanges are pressed into the chamfer plane by hard materials to form hard particles in the chamfer. These particles can damage the tap during subsequent tapping and improvements are needed.
In addition, the problem that the chamfer is directly punched at the inner ring at the tail end of the through hole is that the material of the chamfer part can be extruded to the outer ring of the through hole, so that the diameter of the outer ring of the through hole is increased, and the demoulding becomes a problem.
Disclosure of Invention
The utility model discloses to not enough among the prior art, provide a mould upgrades of interior chamfer of mould, directly accomplish the chamfer in the mould, and the drawing of patterns is convenient.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve: a progressive die for inner chamfering comprises an upper die and a lower die, and further comprises a rough punching station, an outer corner guiding station, a fine punching station and an inner corner guiding station, wherein the rough punching station comprises a first ejector rod arranged on the upper die and a first base arranged on the lower die, when the upper die is pressed down, the first ejector rod penetrates through a punching part to form a through hole, a first groove matched with the outer wall of the through hole is formed in the first base, the outer corner guiding station comprises a first ejector block arranged on the upper die and a second base arranged on the lower die, the first ejector block is in contact with the inner wall of the through hole, a second groove is arranged on the second base, the second groove is in contact with the outer wall of the punching part, an inner chamfering is arranged on the bottom circumference of the second groove, the fine punching station comprises a second ejector rod arranged on the upper die and a third base arranged on the lower die, the third base is provided with a third groove matched with the outer wall of the through hole, the second ejector rod penetrates through the through hole, the inner corner guiding station comprises a fourth base arranged on the lower die, the fourth base is provided with a fourth groove, the bottom of the fourth groove is provided with a fourth ejector rod, the fourth groove is matched with the outer wall of the through hole, the outer end guide angle of the through hole is in certain clearance with the fourth groove, the fourth ejector rod is in contact with the inner ring at the end of the through hole, and the position where the fourth ejector rod is in contact with the through hole is provided with an outer guide angle. At the station of roughly punching a hole, we punch a diameter slightly less than the through-hole of settlement size on the stamping workpiece earlier, the existence of first base is when ensureing to punch a hole, the outer wall of through-hole can not take place too big deformation, at leading the exterior angle station, when the stamping workpiece pushes down, the outer lane of through-hole bottom contacts with the interior chamfer of second recess bottom, form outer lead angle, at the fine blanking station, the second ejector pin pushes down, with the through-hole towards the size of settlement, the through-hole dashes once more because, when leading the exterior angle, the through-hole internal diameter that can make changes certainly, at leading the interior angle station, when the ejector pin recoil, dash interior chamfer, the original material and burr and turn-ups etc. of interior chamfer part are all extruded to clearance department, the interior angle that derives just can not produce hard particle like this. In addition, the problem of difficult demoulding caused by the larger diameter of the outer ring can be solved due to the existence of the gap.
In the above technical solution, preferably, chip removal holes are formed at the bottoms of the first groove and the third groove.
In the above technical solution, preferably, the fourth lift pin is divided into a first portion with a smaller diameter and a second portion with a larger diameter, the first portion and the second portion are excessive through the external lead angle, and the first portion is matched with the inner wall of the through hole.
The utility model has the advantages that: at the station of roughly punching a hole, we punch a diameter slightly less than the through-hole of settlement size on the stamping workpiece earlier, the existence of first base is when ensureing to punch a hole, the outer wall of through-hole can not take place too big deformation, at leading the exterior angle station, when the stamping workpiece pushes down, the outer lane of through-hole bottom contacts with the interior chamfer of second recess bottom, form outer lead angle, at the fine blanking station, the second ejector pin pushes down, with the through-hole towards the size of settlement, the through-hole dashes once more because, when leading the exterior angle, the through-hole internal diameter that can make changes certainly, at leading the interior angle station, when the ejector pin recoil, dash interior chamfer, the original material and burr and turn-ups etc. of interior chamfer part are all extruded to clearance department, the interior angle that derives just can not produce hard particle like this. In addition, the problem of difficult demoulding caused by the larger diameter of the outer ring can be solved due to the existence of the gap.
Drawings
Fig. 1 is a schematic view of the mold closing state of the present invention.
Fig. 2 is a schematic diagram of the mold splitting state of the present invention.
Fig. 3 is a schematic view of a rough punching station.
FIG. 4 is a schematic view of a lead outside corner station.
Fig. 5 is a schematic view of a fine blanking station.
FIG. 6 is a schematic view of an interior corner guiding station.
Fig. 7 is a partially enlarged schematic view of fig. 6.
Detailed Description
The invention will be described in further detail with reference to the following detailed description and accompanying drawings:
referring to fig. 1-7, the progressive die for the inner chamfer comprises an upper die 1 and a lower die 2, and further comprises a rough punching station 3, an outer corner guiding station 4, a fine punching station 5 and an inner corner guiding station 6.
The rough punching station 3 comprises a first ejector rod 31 arranged on the upper die 1 and a first base 32 arranged on the lower die, when the upper die 1 is pressed down, the first ejector rod 31 punches through the stamping part 100 to form the through hole 101, and the first base 32 is provided with a first groove 321 matched with the outer wall of the through hole 101. The bottom of the first groove is provided with a chip removal hole 322, and the diameter of the first ejector rod is slightly smaller than the set size of the through hole.
Lead external corner station 4 including setting up go up first kicking block 41 on the mould 1 and set up second base 42 on the lower mould 2, first kicking block 41 with the inner wall of through-hole 101 contacts, be provided with second recess 421 on the second base 42, second recess 421 with the outer wall of stamping workpiece contacts, the bottom border of second recess 421 is provided with interior chamfer 422.
The fine punching station 5 comprises a second ejector rod 51 arranged on the upper die 1 and a third base 52 arranged on the lower die, a third groove 521 matched with the outer wall of the through hole is formed in the third base 52, a chip removal hole 522 is formed in the bottom of the third groove, and the second ejector rod 51 penetrates through the through hole 101.
The inner corner guiding station 6 comprises a fourth base 61 arranged on the lower die, a fourth groove 611 is arranged on the fourth base 61, a fourth top rod 62 is arranged at the bottom of the fourth groove 611, the fourth top rod 62 is divided into a first part 621 with a smaller diameter and a second part 622 with a larger diameter, the first part 621 and the second part 622 are excessive through the outer guiding angle 623, and the first part 621 is matched with the inner wall of the through hole 101. The fourth groove is matched with the outer wall of the through hole, a certain gap 6a is formed between the outer leading angle at the tail end of the through hole and the fourth groove, the fourth ejector rod is in contact with the inner ring at the tail end of the through hole, and an outer leading angle is arranged at the position where the fourth ejector rod is in contact with the through hole.
At the station of roughly punching a hole, we punch a diameter slightly less than the through-hole of settlement size on the stamping workpiece earlier, the existence of first base is when ensureing to punch a hole, the outer wall of through-hole can not take place too big deformation, at leading the exterior angle station, when the stamping workpiece pushes down, the outer lane of through-hole bottom contacts with the interior chamfer of second recess bottom, form outer lead angle, at the fine blanking station, the second ejector pin pushes down, with the through-hole towards the size of settlement, the through-hole dashes once more because, when leading the exterior angle, the through-hole internal diameter that can make changes certainly, at leading the interior angle station, when the ejector pin recoil, dash interior chamfer, the original material and burr and turn-ups etc. of interior chamfer part are all extruded to clearance department, the interior angle that derives just can not produce hard particle like this. In addition, the problem of difficult demoulding caused by the larger diameter of the outer ring can be solved due to the existence of the gap.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (3)
1. The utility model provides a mould upgrades of interior chamfer of mould, includes mould and lower mould, its characterized in that: the punching die comprises an upper die, a lower die, a punching die and a guide outer corner die, and further comprises a rough punching station, a guide outer corner station, a fine punching station and a guide inner corner station, wherein the rough punching station comprises a first ejector rod arranged on the upper die and a first base arranged on the lower die, when the upper die is pressed down, the first ejector rod punches through a punching part to form a through hole, a first groove matched with the outer wall of the through hole is arranged on the first base, the guide outer corner station comprises a first ejector block arranged on the upper die and a second base arranged on the lower die, the first ejector block is contacted with the inner wall of the through hole, a second groove is arranged on the second base, the second groove is contacted with the outer wall of the punching part, an inner chamfer is arranged on the periphery of the bottom of the second groove, the fine punching station comprises a second ejector rod arranged on the upper die and a third base arranged on the lower die, and a third groove matched with the outer wall of the through hole is arranged on the third base, the second ejector rod penetrates through the through hole, the inner angle guiding station comprises a fourth base arranged on the lower die, a fourth groove is formed in the fourth base, a fourth ejector rod is arranged at the bottom of the fourth groove, the fourth groove is matched with the outer wall of the through hole, a certain gap is formed between the outer end guide angle of the through hole and the fourth groove, the fourth ejector rod is in contact with the inner ring at the end of the through hole, and an outer guide angle is arranged at the position where the fourth ejector rod is in contact with the through hole.
2. The progressive die for in-die chamfering of claim 1, wherein: chip removal holes are formed in the bottoms of the first groove and the third groove.
3. The progressive die for in-die chamfering according to claim 1, wherein: the fourth ejector rod is divided into a first part with a smaller diameter and a second part with a larger diameter, the first part and the second part are excessive through the outer guide angle, and the first part is matched with the inner wall of the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022660549.7U CN214184890U (en) | 2020-11-17 | 2020-11-17 | Progressive die for inner chamfering of die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022660549.7U CN214184890U (en) | 2020-11-17 | 2020-11-17 | Progressive die for inner chamfering of die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214184890U true CN214184890U (en) | 2021-09-14 |
Family
ID=77645851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022660549.7U Active CN214184890U (en) | 2020-11-17 | 2020-11-17 | Progressive die for inner chamfering of die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214184890U (en) |
-
2020
- 2020-11-17 CN CN202022660549.7U patent/CN214184890U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205042988U (en) | Metal plate spare hole flanging mould that punches a hole | |
| CN214184890U (en) | Progressive die for inner chamfering of die | |
| CN112719061B (en) | Forming process of small hole with chamfered surface in inward-flanged orifice on shell of electric control booster | |
| US7536929B2 (en) | Ball screw and method for producing a spindle nut, in particular of a ball screw | |
| CN213350443U (en) | Cold stamping disc part and forming progressive die thereof | |
| CN114749552B (en) | Fine stamping process for clutch plate | |
| CN112944187B (en) | Self-lubricating chamfering die | |
| CN212664647U (en) | Fine blanking die capable of improving strength of male die and female die of thin-wall annular piece | |
| CN106583485A (en) | Forming method for large-diameter flange air cylinder | |
| CN112371844A (en) | In-mold chamfering method and progressive die for in-mold chamfering | |
| CN214557084U (en) | Cold heading module for fastener | |
| CN112296158B (en) | Integrated nut plate punch forming process | |
| CN212121573U (en) | Main die structure for knurling process under head of extrusion-molded screw product | |
| CN201076885Y (en) | Flanging die for opening thin-walled shaft sleeve | |
| CN205684647U (en) | The shaping dies of band internal ring cup shell based on Split assembled removing device | |
| CN207521544U (en) | A kind of helical blade stamping die | |
| CN107262602B (en) | Two-step die set | |
| CN217044278U (en) | Processing die for washing machine wheel cover | |
| CN110153272A (en) | The cavity plate component that punching, trimming for monaural supporting plate self-lock nut are punched | |
| CN213856647U (en) | Mold for processing thin-wall shell and mold assembly comprising same | |
| CN215392282U (en) | Efficient forming device for arc shape of end face of bolt rod part | |
| CN211276124U (en) | Punching die for inner gear disc of flywheel | |
| CN219703505U (en) | Powder metallurgy forming die of belt pulley | |
| CN212370986U (en) | One-time stamping forming die for processing ring blank of spinning frame | |
| CN105728555A (en) | Machining process for cs9 triangular swing arm upper plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |