CN215786480U - Square head broaching step bolt cold extrusion die assembly - Google Patents
Square head broaching step bolt cold extrusion die assembly Download PDFInfo
- Publication number
- CN215786480U CN215786480U CN202023293270.6U CN202023293270U CN215786480U CN 215786480 U CN215786480 U CN 215786480U CN 202023293270 U CN202023293270 U CN 202023293270U CN 215786480 U CN215786480 U CN 215786480U
- Authority
- CN
- China
- Prior art keywords
- die
- punching cavity
- punching
- hole
- punch
- 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
Abstract
The utility model relates to the field of metal extrusion forming tools, in particular to a cold extrusion die assembly for a square-head broaching step bolt. The utility model provides a cold extrusion die subassembly of square head trompil step bolt, includes die assembly (1) and fundamental mode subassembly (2), characterized by: the die assembly (1) comprises a first die (11), a second die (12), a third die (13), a fourth die (14), a fifth die (15) and a sixth die (16); the master mold assembly (2) includes a first master mold (21), a second master mold (22), a third master mold (23), a fourth master mold (24), a fifth master mold (25), and a sixth master mold (26). The utility model has high processing efficiency, safety and reliability.
Description
Technical Field
The utility model relates to the field of metal extrusion forming tools, in particular to a cold extrusion die assembly for a square-head broaching step bolt.
Background
The cold extrusion molding is a mainstream means for manufacturing the fasteners nowadays due to high material utilization rate, high productivity and good product size consistency. The cold extrusion forming process (cold heading process) mainly processes round rods and wires into various rod parts through a multi-station cold heading machine, and has the process advantage of quickly forming thicker head types (such as head types of various bolts, hexagonal heads, inner plum heads and the like) of the rod parts. However, the existing cold heading forming only can form the rod part and the head part of the bolt, and the bolt with a hole in the head part can only be finished one by one through subsequent machining, so that the machining efficiency is low, and the safety cannot be guaranteed. This limits the applicability of cold extrusion.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art and provide a cold extrusion die assembly with high processing efficiency, safety and reliability, the utility model discloses a square-head broaching step bolt.
The utility model achieves the purpose by the following technical scheme:
the utility model provides a cold extrusion die subassembly of square head trompil step bolt, includes die assembly and fundamental mode subassembly, characterized by:
the die component comprises a first die, a second die, a third die, a fourth die, a fifth die and a sixth die, wherein the front end surfaces of the first die, the second die, the third die, the fourth die, the fifth die and the sixth die are sequentially provided with a first punch, a second punch, a third punch, a fourth punch, a fifth punch and a sixth punch,
the front end face of the first punch is cylindrical, the front end faces of the second punch and the third punch are both in a circular truncated cone shape, and the front end faces of the fourth punch, the fifth punch and the sixth punch are all in a conical shape with the same bottom face and cylindrical end face attached to one cylindrical end face;
the main mold assembly includes a first main mold, a second main mold, a third main mold, a fourth main mold, a fifth main mold, and a sixth main mold,
the first main die, the second main die, the third main die, the fourth main die, the fifth main die and the sixth main die are internally provided with a first punching cavity, a second punching cavity, a third punching cavity, a fourth punching cavity, a fifth punching cavity and a sixth punching cavity respectively, the opening ends of the six first punching cavity, the second punching cavity, the third punching cavity, the fourth punching cavity, the fifth punching cavity and the sixth punching cavity are respectively arranged on the front end surfaces of the six first main die, the second main die, the third main die, the fourth main die, the fifth main die and the sixth main die, the ejection rods are arranged in the six first punching cavity, the second punching cavity, the third punching cavity, the fourth punching cavity, the fifth punching cavity and the sixth punching cavity,
the first punching cavity is cylindrical, the bottom end surface and the side wall are in arc transition, the cylindrical top end surface is arranged on the front end surface of the first punching cavity,
the second punching cavity is cylindrical, the bottom end surface and the side wall are in arc transition, the cylindrical top end surface is arranged on the front end surface of the second punching cavity,
the third punching cavity is a stepped hole with three-stage outer diameter sizes sequentially shrinking from large to small along the top end surface to the bottom end surface, the three-stage stepped hole is a cylindrical top end hole, a cylindrical middle hole and a cylindrical bottom end hole from the top end surface to the bottom end surface, adjacent two stages of stepped holes are in inclined surface transition,
the shape of the fourth punching cavity is a stepped hole with three-stage external diameter sizes sequentially shrinking from large to small along the top end surface to the bottom end surface, the three-stage stepped hole is respectively a round top end hole, a round middle hole and a round bottom end hole from the top end surface to the bottom end surface, adjacent two stages of stepped holes are in transition through inclined planes,
the shape of the fifth punching cavity is a stepped hole with three-stage external diameter sizes sequentially shrinking from large to small along the top end surface to the bottom end surface, the three-stage stepped hole is a round top end hole, a round middle hole and a round bottom end hole from the top end surface to the bottom end surface respectively, a round annular groove is arranged between the top end hole and the middle hole of the fifth punching cavity, the middle hole and the bottom end hole of the fifth punching cavity are in transition through an inclined surface,
the sixth punching cavity is a stepped hole with three-stage outer diameter sizes sequentially shrinking from large to small along the top end surface to the bottom end surface, the three-stage stepped hole is a round top end hole, a round middle hole and a round bottom end hole from the top end surface to the bottom end surface, a round rectangular ring groove is arranged between the top end hole and the middle hole of the sixth punching cavity, and the middle hole and the bottom end hole of the sixth punching cavity are in transition through an inclined surface;
the first die, the second die, the third die, the fourth die, the fifth die and the sixth die are arranged in sequence, the front end surfaces of the six dies are arranged on the same side,
the first main die, the second main die, the third main die, the fourth main die, the fifth main die and the sixth main die are respectively arranged on the same side of the first stamping die, the second stamping die, the third stamping die, the fourth stamping die, the fifth stamping die and the sixth stamping die, and the six first stamping head, the second stamping head, the third stamping head, the fourth stamping head, the fifth stamping head and the sixth stamping head respectively face the opening ends of the six first stamping cavity, the second stamping cavity, the third stamping cavity, the fourth stamping cavity, the fifth stamping cavity and the sixth stamping cavity.
The square head broaching step bolt cold extrusion die assembly is characterized in that: the bottom end surfaces of the first punching cavity, the third punching cavity, the fourth punching cavity, the fifth punching cavity and the sixth punching cavity are all provided with ejector pins.
When the utility model is used, a cylindrical bar stock is used as a raw material to be processed step by step. Fixing a die assembly and a main die assembly six-station die in a multi-station horizontal cold header side by side, wherein a first die and a first main die are sequentially arranged at a first station, a second die and a second main die are sequentially arranged at a second station, a third die and a third main die are sequentially arranged at a third station, a fourth die and a fourth main die are sequentially arranged at a fourth station, a fifth die and a fifth main die are sequentially arranged at a fifth station, a sixth die and a sixth main die are sequentially arranged at a sixth station, the die assembly reciprocates through the operation of the cold header, the die assembly continuously approaches to the fixed main die assembly in the process of moving to a bottom dead center, the die assembly performs extrusion forming on blanks in the main die assembly through each punch, and the forming process of the blanks is completed when the die assembly reaches the bottom dead center; and in the process that the die assembly moves towards the upper dead point, the blank molded at the current station is ejected out of the main die assembly through an ejection rod in the main die assembly, the blank is conveyed to the next station through an automatic clamp of the cold header, and the molding of the next station is completed when the die assembly moves towards the lower dead point again until all six stations are completed, and the blank can be molded to the required size and shape. Each blank can be manufactured into a finished product through six times of cold heading deformation, and as the cold heading machine can simultaneously carry out cold heading on six different blanks in six stations in one time of cold heading process, 1 product can be formed by one time of cold heading, the speed rate of the cold heading machine can reach 60 times/min, and the production efficiency of the cold heading machine can be improved to 60 pieces/min.
The utility model has the following beneficial effects: the round hole at the head part is directly processed through cold heading, and machining can be replaced, so that the processing efficiency is greatly improved, the material utilization rate is improved, the product qualification rate is high, and the safety of operating personnel is improved.
Drawings
Figure 1 is a schematic view of the present invention,
figure 2 is a schematic view of the shape of the first punch chamber,
figure 3 is a schematic view of the shape of the second punch chamber,
figure 4 is a schematic view of the shape of the third punch chamber,
figure 5 is a schematic view of the shape of the fourth punching chamber,
figure 6 is a schematic view of the shape of the fifth flushing chamber,
fig. 7 is a schematic view of the shape of the sixth punching chamber.
Detailed Description
The utility model is further illustrated by the following specific examples.
Example 1
A cold extrusion die assembly for a square-head broaching step bolt comprises a die assembly 1 and a main die assembly 2, and as shown in figures 1 to 7, the cold extrusion die assembly has the following specific structure:
the die assembly 1 includes a first die 11, a second die 12, a third die 13, a fourth die 14, a fifth die 15, and a sixth die 16, and a first punch 31, a second punch 32, a third punch 33, a fourth punch 34, a fifth punch 35, and a sixth punch 36 are provided in this order on the front end surfaces of the six first die 11, the second die 12, the third die 13, the fourth die 14, the fifth die 15, and the sixth die 16,
the front end face of the first punch 31 is cylindrical, the front end faces of the second punch 32 and the third punch 33 are both in a circular truncated cone shape, and the front end faces of the fourth punch 34, the fifth punch 35 and the sixth punch 36 are all in a conical shape with the same bottom face and cylindrical end face attached to one cylindrical end face;
the main mold assembly 2 includes a first main mold 21, a second main mold 22, a third main mold 23, a fourth main mold 24, a fifth main mold 25 and a sixth main mold 26,
six of the first main die 21, the second main die 22, the third main die 23, the fourth main die 24, the fifth main die 25 and the sixth main die 26 are respectively provided with a first punching cavity 41, a second punching cavity 42, a third punching cavity 43, a fourth punching cavity 44, a fifth punching cavity 45 and a sixth punching cavity 46, the opening ends of the six of the first punching cavity 41, the second punching cavity 42, the third punching cavity 43, the fourth punching cavity 44, the fifth punching cavity 45 and the sixth punching cavity 46 are respectively arranged on the front end surface of the six of the first main die 21, the second main die 22, the third main die 23, the fourth main die 24, the fifth main die 25 and the sixth main die 26, the ejector rods 5 are respectively arranged in the six of the first punching cavity 41, the second punching cavity 42, the third punching cavity 43, the fourth punching cavity 44, the fifth punching cavity 45 and the sixth punching cavity 46,
the shape of the first punch chamber 41 is shown in fig. 2: is cylindrical, and the bottom end surface and the side wall are provided with arc transition, the cylindrical top end surface is arranged on the front end surface of the first punching cavity 41, the bottom end surface of the first punching cavity 41 is provided with an ejector pin,
the shape of the second punch cavity 42 is shown in fig. 3: is cylindrical, and has a circular arc transition between the bottom end surface and the side wall, the cylindrical top end surface is arranged on the front end surface of the second punching cavity 42,
the shape of third punch chamber 43 is shown in FIG. 4: three-stage stepped holes with the outer diameter size gradually shrinking from large to small along the top end surface to the bottom end surface are respectively a cylindrical top end hole, a cylindrical middle hole and a cylindrical bottom end hole from the top end surface to the bottom end surface, adjacent two-stage stepped holes are in inclined transition, an ejector pin is arranged on the bottom end surface of the third punching cavity 43,
the shape of the fourth punch chamber 44 is shown in fig. 5: three-stage stepped holes with the outer diameter size gradually shrinking from large to small along the top end surface to the bottom end surface are respectively a circular top end hole, a circular middle hole and a circular bottom end hole from the top end surface to the bottom end surface, adjacent two-stage stepped holes are in inclined transition, an ejector pin is arranged on the bottom end surface of the fourth punching cavity 43,
the shape of the fifth punch chamber 45 is shown in fig. 6: the three-stage stepped hole is a stepped hole with three-stage outer diameter sizes sequentially shrinking from large to small along the top end surface to the bottom end surface, the three-stage stepped hole is respectively a circular top end hole, a circular middle hole and a circular bottom end hole from the top end surface to the bottom end surface, a circular ring groove is arranged between the top end hole and the middle hole of the fifth punching cavity 45, the middle hole and the bottom end hole of the fifth punching cavity 45 are in transition through an inclined surface, the bottom end surface of the fifth punching cavity 45 is provided with an ejector pin,
the shape of the sixth punching chamber 46 is shown in fig. 7: the third-stage stepped hole is a stepped hole with three-stage outer diameter sizes sequentially shrinking from large to small along the top end surface to the bottom end surface, the third-stage stepped hole is a circular top end hole, a circular middle hole and a circular bottom end hole from the top end surface to the bottom end surface, a circular groove with a rectangular fillet is arranged between the top end hole and the middle hole of the sixth punching cavity 46, the middle hole and the bottom end hole of the sixth punching cavity 46 are in transition through an inclined plane, and an ejector pin is arranged on the bottom end surface of the sixth punching cavity 46;
six of the first die 11, the second die 12, the third die 13, the fourth die 14, the fifth die 15 and the sixth die 16 are arranged in sequence, and the front end surfaces of the six are all arranged on the same side,
the sixth first master die 21, second master die 22, third master die 23, fourth master die 24, fifth master die 25, and sixth master die 26 are provided on the same side as the sixth first die 11, second die 12, third die 13, fourth die 14, fifth die 15, and sixth die 16, respectively, and the sixth first punch 31, second punch 32, third punch 33, fourth punch 34, fifth punch 35, and sixth punch 36 face the open ends of the sixth first die cavity 41, second die cavity 42, third die cavity 43, fourth die cavity 44, fifth die cavity 45, and sixth die cavity 46, respectively.
When the device is used, a cylindrical bar stock is used as a raw material to be processed step by step. Fixing six-station dies of a die assembly 1 and a main die assembly 2 in a multi-station horizontal cold header side by side, sequentially arranging a first die 11 and a first main die 21 at a first station, sequentially arranging a second die 12 and a second main die 22 at a second station, sequentially arranging a third die 13 and a third main die 23 at a third station, sequentially arranging a fourth die 14 and a fourth main die 24 at a fourth station, sequentially arranging a fifth die 15 and a fifth main die 25 at a fifth station, sequentially arranging a sixth die 16 and a sixth main die 26 at a sixth station, operating through the cold header to enable the die assembly 1 to reciprocate, enabling the die assembly 1 to continuously approach the fixed main die assembly 2 in the process of operating to the bottom dead center, carrying out extrusion forming on blanks in the main die assembly 2 through each punch in the die assembly 1, and completing the forming process of the blanks when the die assembly 1 reaches the bottom dead center; and in the process that the die assembly 1 runs towards the top dead center, the blank molded at the current station is ejected out of the main die assembly through an ejection rod in the main die assembly 2 and is conveyed to the next station through the automatic clamp of the cold header, and the molding of the next station is completed when the die runs towards the bottom dead center again until all six stations are completed, and the blank can be molded to the required size and shape. Each blank can be manufactured into a finished product through six times of cold heading deformation, and as the cold heading machine can simultaneously carry out cold heading on six different blanks in six stations in one time of cold heading process, 1 product can be formed by one time of cold heading, the speed rate of the cold heading machine can reach 60 times/min, and the production efficiency of the cold heading machine can be improved to 60 pieces/min.
Claims (2)
1. The utility model provides a cold extrusion die subassembly of square head trompil step bolt, includes die assembly (1) and fundamental mode subassembly (2), characterized by:
the die component (1) comprises a first die (11), a second die (12), a third die (13), a fourth die (14), a fifth die (15) and a sixth die (16), wherein the front end surfaces of the first die (11), the second die (12), the third die (13), the fourth die (14), the fifth die (15) and the sixth die (16) are sequentially provided with a first punch (31), a second punch (32), a third punch (33), a fourth punch (34), a fifth punch (35) and a sixth punch (36),
the front end face of the first punch (31) is cylindrical, the front end faces of the second punch (32) and the third punch (33) are both in a circular truncated cone shape, and the front end faces of the fourth punch (34), the fifth punch (35) and the sixth punch (36) are all in a conical shape with the same bottom face and cylindrical end face attached to one cylindrical end face;
the main mold assembly (2) comprises a first main mold (21), a second main mold (22), a third main mold (23), a fourth main mold (24), a fifth main mold (25) and a sixth main mold (26),
the first punching cavity (41), the second punching cavity (42), the third punching cavity (43), the fourth punching cavity (44), the fifth punching cavity (45) and the sixth punching cavity (46) are respectively arranged in the six first main die (21), the second main die (22), the third main die (23), the fourth main die (24), the fifth main die (25) and the sixth main die (26), the opening ends of the six first punching cavity (41), the second punching cavity (42), the third punching cavity (43), the fourth punching cavity (44), the fifth punching cavity (45) and the sixth punching cavity (46) are respectively arranged on the front end surface of the six first main die (21), the second main die (22), the third punching cavity (23), the fourth main die (24), the fifth main die (25) and the sixth punching cavity (26), and the first punching cavity (41), the second punching cavity (42), the third punching cavity (43), the fourth punching cavity (44), the fifth main die (25) and the sixth punching cavity (46) are respectively arranged in the front end surface of the six first main die (21), the second punching cavity (42), the third punching cavity (43), the fourth punching cavity (44), the sixth main die (45) and the sixth punching rod (5),
the first punching cavity (41) is cylindrical, an arc transition is arranged between the bottom end surface and the side wall, the cylindrical top end surface is arranged on the front end surface of the first punching cavity (41),
the second punching cavity (42) is cylindrical, an arc transition is arranged between the bottom end surface and the side wall, the cylindrical top end surface is arranged on the front end surface of the second punching cavity (42),
the third punching cavity (43) is a stepped hole with three-stage external diameter sizes sequentially shrinking from large to small along the top end surface to the bottom end surface, the stepped hole is respectively a cylindrical top end hole, a cylindrical middle hole and a cylindrical bottom end hole from the top end surface to the bottom end surface, adjacent two stages of stepped holes are in transition through inclined planes,
the shape of the fourth punching cavity (44) is a stepped hole with three-stage external diameter sizes sequentially shrinking from large to small along the top end surface to the bottom end surface, the stepped hole is respectively a round top end hole, a round middle hole and a round bottom end hole from the top end surface to the bottom end surface, adjacent two stages of stepped holes are in transition through inclined planes,
the shape of the fifth punching cavity (45) is a stepped hole with three-level external diameter size sequentially contracted from large to small along the top end surface to the bottom end surface, the stepped hole is respectively a circular top end hole, a circular middle hole and a circular bottom end hole from the top end surface to the bottom end surface, a circular ring groove is arranged between the top end hole and the middle hole of the fifth punching cavity (45), the middle hole and the bottom end hole of the fifth punching cavity (45) are in transition through an inclined surface,
the sixth punching cavity (46) is in the shape of a stepped hole with three-level outer diameter sizes sequentially shrinking from large to small along the top end face to the bottom end face, the stepped hole is a circular top end hole, a circular middle hole and a circular bottom end hole from the top end face to the bottom end face, a circular groove with a rectangular fillet is arranged between the top end hole and the middle hole of the sixth punching cavity (46), and the middle hole and the bottom end hole of the sixth punching cavity (46) are in transition through an inclined plane;
the first punching die (11), the second punching die (12), the third punching die (13), the fourth punching die (14), the fifth punching die (15) and the sixth punching die (16) are arranged in sequence, the front end surfaces of the six punching dies are arranged on the same side,
the six first main die (21), the second main die (22), the third main die (23), the fourth main die (24), the fifth main die (25) and the sixth main die (26) are respectively arranged on the same side of the six first die (11), the second die (12), the third die (13), the fourth die (14), the fifth die (15) and the sixth die (16), and the six first punch (31), the second punch (32), the third punch (33), the fourth punch (34), the fifth punch (35) and the sixth punch (36) respectively face the open ends of the six first punching cavity (41), the second punching cavity (42), the third punching cavity (43), the fourth punching cavity (44), the fifth punching cavity (45) and the sixth punching cavity (46).
2. The cold extrusion die assembly for square drawn hole stepped bolts as claimed in claim 1, wherein: ejector pins are arranged on the bottom end surfaces of the first punching cavity (41), the third punching cavity (43), the fourth punching cavity (44), the fifth punching cavity (45) and the sixth punching cavity (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023293270.6U CN215786480U (en) | 2020-12-31 | 2020-12-31 | Square head broaching step bolt cold extrusion die assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023293270.6U CN215786480U (en) | 2020-12-31 | 2020-12-31 | Square head broaching step bolt cold extrusion die assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215786480U true CN215786480U (en) | 2022-02-11 |
Family
ID=80125117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023293270.6U Active CN215786480U (en) | 2020-12-31 | 2020-12-31 | Square head broaching step bolt cold extrusion die assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215786480U (en) |
-
2020
- 2020-12-31 CN CN202023293270.6U patent/CN215786480U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103691874A (en) | Forming method of thin-wall nut | |
| CN203356523U (en) | Manufacturing device for flange nut through cold heading | |
| CN105081189B (en) | Monel blind nut cold-heading device and production technology | |
| CN109108203B (en) | Ball stud cold heading forming die and forming process | |
| CN106141061A (en) | A kind of cold-heading molding technique for manufacturing positioning and guiding nut and cold-heading module | |
| CN113059016B (en) | Thinning, stretching and extruding composite forming die for large-height-diameter ratio cylinder | |
| CN105964847A (en) | One-time precision forming technology of composite insulator lower-end fitting | |
| CN203578515U (en) | Novel die set with fine blanking and cold extruding functions | |
| CN215786480U (en) | Square head broaching step bolt cold extrusion die assembly | |
| CN203356506U (en) | Hexagon ultra-thick nut cold heading device | |
| CN113020535A (en) | Cold heading forming module and cold heading forming method of rivet nut | |
| CN110125295A (en) | A kind of copper lug manufacturing process of seven stations Cold header clamping | |
| CN215786479U (en) | Square head stepped bolt cold heading forming die assembly | |
| CN101577202B (en) | Electrode forming process for discharge tube and die designed for implementing same | |
| CN216911965U (en) | Crimping terminal cold heading forming module | |
| CN111482481A (en) | Hot extrusion die for deep-cavity thin-wall component | |
| CN110421110A (en) | Fluting axle nut one-step moulding method | |
| CN107363205B (en) | Forging forming die set of valve body forging piece of flange ball valve with handle | |
| CN104959510A (en) | Forging compound mold and bearing ring forging process adopting compound mold | |
| CN105234325A (en) | Forging process for welding neck flange | |
| CN103008452B (en) | Threaded plate forming process and die | |
| CN215508811U (en) | Cold-heading mould is used in eccentric shaft production | |
| CN201900207U (en) | Special riveting bolt forming die for sedan | |
| CN205200432U (en) | Cold heading die movable mould piece | |
| CN216989712U (en) | Oil plug cold forming die assembly for vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |