CN106694792A - Cold heading device and process for specially-shaped torsion rod - Google Patents
Cold heading device and process for specially-shaped torsion rod Download PDFInfo
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- CN106694792A CN106694792A CN201611235338.0A CN201611235338A CN106694792A CN 106694792 A CN106694792 A CN 106694792A CN 201611235338 A CN201611235338 A CN 201611235338A CN 106694792 A CN106694792 A CN 106694792A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000007493 shaping process Methods 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000004080 punching Methods 0.000 claims description 52
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 3
- 206010066054 Dysmorphism Diseases 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K7/00—Making railway appurtenances; Making vehicle parts
- B21K7/12—Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
- B21K27/02—Feeding devices for rods, wire, or strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
- B21K27/06—Cutting-off means; Arrangements thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a cold heading device and process for a specially-shaped torsion rod. The cold heading device comprises a cutting mechanism, an ejection mechanism, a conveying mechanism and three molds. The cutting mechanism cuts off a wire, the ejection mechanism ejects up the cut-off wire, and the conveying mechanism moves between the ejection mechanism and the three molds for conveying. The three molds comprises the first mold for carrying out shaping beam chamfering on the wire, the second mold for extruding the head of the wire to form specially-shaped teeth, and the third mold for positioning the flange head and the rod portion of the molded specially-shaped teeth, and the three molds are arranged in sequence. All the sizes of the specially-shaped teeth are formed at a time through the cold heading technology, the specially-shaped head does not need to be machined additionally, materials are saved, the integrity of a metal flow line is kept, the strength of parts is increased, and production efficiency is improved.
Description
Technical Field
The invention relates to the field of cold heading, in particular to a cold heading device and a cold heading process for a special-shaped torsion bar.
Background
In the automobile glass lifting system, a transmission torsion bar is generally needed, the special-shaped patterned teeth at the head of the transmission torsion bar play a special positioning transmission role, in the current industry, the special-shaped patterned teeth are generally completed by machining, knurling, electroplating and other processes, and the automobile glass lifting system is higher in relative product cost, has scraps, is lower in efficiency and is long in production period.
Disclosure of Invention
The invention provides a cold heading device and a cold heading process for a special-shaped torsion bar, which are used for directly forming a special-shaped toothed bar, reducing corresponding machining processes, improving the production efficiency, improving the material utilization rate, reducing the production cost and shortening the production period.
In order to solve the technical problem, the invention provides a cold heading process of a special-shaped torsion bar, which comprises the following steps:
step 1: providing a wire rod, and shearing the wire rod to form a round rod;
step 2: performing primary cold heading on the round rod, thereby shaping two end parts of the round rod and forming chamfers;
and step 3: performing secondary cold heading on the round rod with the chamfer angle, so as to extrude the head of the round rod and form the special-shaped flower teeth;
and 4, step 4: performing cold heading for the third time on the round rod, positioning the special-shaped spline teeth, further performing cold heading to form a special-shaped spline tooth flange, and reducing the diameter of the area outside the head of the round rod to form a rod part;
and 5: taking out the special-shaped torsion bar after cold heading;
step 6: repeating steps 1 to 5 until all wire cold heading is completed.
Preferably, the first cold heading, the second cold heading and the third cold heading are all realized by using cold heading dies.
Preferably, the cold heading mould is provided with three groups, and the three groups of cold heading moulds are sequentially installed on the cold heading machine.
The invention also provides a cold heading device of the special-shaped torsion bar, which comprises: the device comprises a cutting mechanism, an ejection mechanism, a conveying mechanism and three dies; wherein,
the cutting mechanism cuts off the wire rods, and the ejection mechanism jacks up the cut wire rods;
the conveying mechanism moves between the ejection mechanism and the three molds for feeding;
the three molds include: the wire shaping and chamfering die comprises a first die for shaping and chamfering wires, a second die for extruding and bundling the head of the wires to form special-shaped flower teeth, and a third die for positioning and forming the flange head and the rod part of the special-shaped flower teeth, wherein the three dies are sequentially arranged.
Preferably, the first mold includes: a first master mold and a first die corresponding to the first master mold, wherein,
the first main die comprises a first main die shell, a first main die cushion block arranged in the first main die shell, a first main die core and a first main die ejector pin, wherein a first main die cavity is arranged in the first main die core, one end of the first main die ejector pin is fixed on the first main die cushion block, and the other end of the first main die ejector pin is driven by a driving mechanism to move and extends into or retreats from the first main die cavity;
the first punching die comprises a first punching die shell, a first punching die cushion block and a first punching die ejector pin, the first punching die cushion block and the first punching die ejector pin are arranged in the first punching die shell, a first punching die cavity matched with the first main die cavity is formed in the first punching die shell, one end of the first punching die ejector pin is fixed on the first punching die cushion block, and the other end of the first punching die ejector pin is driven by a driving mechanism to move and extends into or withdraws from the first punching die cavity;
the first main die cavity and the first die cavity jointly form a shaping bundle chamfering die cavity of the wire.
Preferably, the second mold includes: a second master mold and a second die corresponding to the second master mold; wherein,
the second master mold includes: the second main mould shell is positioned in the second main mould shell, and a second main mould cushion block, a second lower main mould core, a second upper main mould core and a second main mould thimble are sequentially arranged from bottom to top; a second lower main model cavity is arranged in the second lower main model core, a second upper main model cavity is arranged in the second upper main model core, one end of a second main model thimble is fixed on the second main model cushion block, and the other end of the second main model thimble extends into the second upper main model cavity and the second lower main model cavity and is driven by a driving mechanism to move up and down;
the second die includes: the second die stamping die is characterized by comprising a second die stamping die shell, a second die stamping cushion block and a second die stamping thimble, wherein the second die stamping cushion block and the second die stamping thimble are arranged in the second die stamping die shell, one end of the second die stamping thimble is fixed on the second die stamping cushion block, and the other end of the second die stamping thimble is matched with the second main die thimble to work.
Preferably, the third mold includes: a third master mold and a third die corresponding to the third master mold; wherein,
the third master mold includes: the third main mould core is internally provided with a third main mould cavity, one end of the third main mould thimble is fixed on the third main mould cushion block, and the other end of the third main mould thimble is driven by a driving mechanism to move and extend into or withdraw from the third main mould cavity;
the third punching die comprises a third punching die shell, a third punching die cushion block and a third punching die ejector pin, the third punching die cushion block and the third punching die ejector pin are arranged in the third punching die shell, a third punching die cavity matched with the third main die cavity is formed in the third punching die shell, one end of the third punching die ejector pin is fixed on the third punching die cushion block, and the other end of the third punching die ejector pin is driven by the driving mechanism to move and extends into or withdraws from the third punching die cavity;
and the third main die cavity and the third die cavity jointly form a special-shaped torsion bar die cavity.
Preferably, the material cutting mechanism adopts a shear die or scissors.
Preferably, the conveying mechanism is a clamp.
Preferably, the three dies are all mounted on a cold header.
Compared with the prior art, the cold heading technology is utilized to mold all sizes of the special-shaped flower teeth at one time, the special-shaped head does not need to be additionally machined, materials are saved, the integrity of a metal streamline is kept, the strength of parts is improved, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of a cold heading device for a special-shaped torsion bar according to an embodiment of the invention;
FIG. 2 is a schematic view of a first mold according to an embodiment of the present invention;
FIG. 3 is a schematic view of a second mold according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a third mold according to an embodiment of the present invention.
In the figure: 10-a cutting mechanism, 20-an ejection mechanism, 30-a transmission mechanism and 40-a mould;
41-a first die, 110-a first main die, 111-a first main die shell, 112-a first main die core, 113-a first main die cushion block, 114-a first main die ejector pin, 120-a first die, 121-a first die shell, 122-a first die ejector pin, 123-a first die cushion block;
42-second mold, 210-second main mold, 211-second main mold shell, 212-second upper main mold core, 213-second lower main mold core, 214-second main mold cushion block, 215-second main mold ejector pin, 216-second main mold ejector rod;
220-second die, 221-second die shell, 222-second die ejector pin and 223-second die cushion block;
43-a third mould, 310-a third main mould, 311-a third main mould shell, 312-a third main mould core, 313-a third main mould cushion block and 314-a third main mould thimble;
320-third die, 321-third die shell, 322-third die ejector pin and 323-third die cushion block.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be noted that the drawings are in simplified form and are not to precise scale, which is provided for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
As shown in fig. 1, the present invention further provides a cold heading device for a special-shaped torsion bar, comprising: the device comprises a cutting mechanism 10, an ejection mechanism 20, a conveying mechanism 30 and three dies 40; wherein the cutting mechanism 10 cuts the wire rod, and the ejection mechanism 20 ejects the cut wire rod; the transfer mechanism 30 moves the feed between the ejection mechanism 20 and the three molds 40. Specifically, the three molds 40 include: the wire shaping and chamfering die comprises a first die 41 for shaping and chamfering wires, a second die 42 for extruding and bundling the head of the wires to form special-shaped flower teeth, and a third die 43 for forming the flange head and the rod of the special-shaped flower teeth, wherein the three dies 40 are sequentially arranged.
Referring to fig. 2, the first mold 41 includes: a first master mold 110, and a first die 120 corresponding to the first master mold 110.
The first main mold 110 includes a first main mold shell 111, a first main mold pad 113 disposed on the first main mold, a first main mold core 112, and a first main mold thimble 114; a first main mold cavity is arranged in the first main mold core 112, one end of the first main mold ejector pin 114 is fixed on the first main mold cushion block 113, and the other end is driven by a driving mechanism to move and extend into or withdraw from the first main mold cavity;
the first die 120 comprises a first die shell 121, a first die cushion block 123 and a first die ejector pin 122, the first die cushion block 123 and the first die ejector pin 122 are arranged in the first die shell 121, a first die cavity matched with the first main die cavity is formed in the first die shell 121, one end of the first die ejector pin 122 is fixed on the first die cushion block 123, and the other end of the first die ejector pin is driven by a driving mechanism to move and extends into or withdraws from the first die cavity;
the first main die cavity and the first die cavity together form a shaping bundle chamfering die cavity of the wire rod, namely, the first main die 110 and the first die 120 are matched to perform cold heading on the wire rod, and shaping bundle chamfering is performed on two ends of the wire rod.
Referring to fig. 3, the second mold 42 includes: a second master mold 210, and a second die 220 corresponding to the second master mold 210.
The second master mold 210 includes: a second main mold shell 211, a second main mold cushion block 214, a second lower main mold core 213, a second upper main mold core 212, and a second main mold thimble 215, which are sequentially disposed from bottom to top in the second main mold shell 211; a second lower main model cavity is arranged in the second lower main model core 213, a second upper main model cavity is arranged in the second upper main model core 212, one end of the second main model thimble 215 is fixed on the second main model cushion block 214, and the other end of the second main model thimble extends into the second upper and lower main model cavities and is driven by a driving mechanism to move up and down; further, the second main mold 210 further includes a second main mold top rod 216, the second main mold top pin 215 is fixed on the second main mold head block 214 by the second main mold top rod 216, and the second main mold top pin 215 can move relative to the second main mold top rod 216.
The second die 220 includes: the second die stamping die 221, a second die cushion block 223 and a second die ejector pin 222 which are arranged in the second die stamping die 221, wherein one end of the second die ejector pin 222 is fixed on the second die cushion block 223, and the other end of the second die ejector pin is matched with the second main die ejector pin 222 for working.
Preferably, referring to fig. 4, the third mold 43 includes: a third master mold 310, and a third die 320 corresponding to the third master mold 310.
The third main mold 310 includes: a third main mold shell 311, a third main mold core 312 and a third main mold ejector pin 314, which are disposed in the third main mold cushion block 313, wherein a third main mold cavity is disposed in the third main mold core 312, one end of the third main mold ejector pin 314 is fixed on the third main mold cushion block 313, and the other end is driven by a driving mechanism to move, and extends into or withdraws from the third main mold cavity;
the third die 320 comprises a third die shell 321, a third die cushion block 323 and a third die ejector pin 322 which are arranged in the third die shell 321, a third die cavity matched with the third main die cavity is arranged in the third die shell 321, one end of the third die ejector pin 322 is fixed on the third die cushion block 323, and the other end of the third die ejector pin is driven by a driving mechanism to move and extends into or withdraws from the third die cavity;
and the third main die cavity and the third die cavity jointly form a special-shaped torsion bar die cavity.
Preferably, the cutting mechanism 10 uses a cutting die or scissors, so as to cut the wire rapidly.
Preferably, the conveying mechanism 30 is provided with a plurality of clamps, so that the material can be fed in time, the waiting time of the die 40 can be reduced, and the working efficiency can be improved.
Preferably, the three dies 40 are all mounted on a cold heading machine.
With continued reference to fig. 1-4, the present invention provides a cold heading process for a profiled torsion bar, comprising:
step 1: providing a wire rod, and shearing the wire rod to form a round rod;
step 2: performing primary cold heading on the round rod, thereby shaping two end parts of the round rod and forming chamfers;
and step 3: performing secondary cold heading on the round rod with the chamfer angle, so as to extrude the head of the round rod and form the special-shaped flower teeth;
and 4, step 4: performing cold heading for the third time on the round rod, positioning the special-shaped spline teeth, further performing cold heading to form a special-shaped spline tooth flange, and reducing the diameter of the area outside the head of the round rod to form a rod part;
and 5: taking out the special-shaped torsion bar after cold heading;
step 6: repeating steps 1 to 5 until all wire cold heading is completed.
Preferably, the first cold heading, the second cold heading and the third cold heading are all realized by using cold heading dies.
Preferably, the cold heading mould is provided with three groups, and the three groups of cold heading moulds are sequentially installed on the cold heading machine.
It will be apparent to those skilled in the art that various changes and modifications may be made in the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The cold heading process of the special-shaped torsion bar is characterized by comprising the following steps of:
step 1: providing a wire rod, and shearing the wire rod to form a round rod;
step 2: performing primary cold heading on the round rod, thereby shaping two end parts of the round rod and forming chamfers;
and step 3: performing secondary cold heading on the round rod with the chamfer angle, so as to extrude the head of the round rod and form the special-shaped flower teeth;
and 4, step 4: performing cold heading for the third time on the round rod, positioning the special-shaped spline teeth, further performing cold heading to form a special-shaped spline tooth flange, and reducing the diameter of the area outside the head of the round rod to form a rod part;
and 5: taking out the special-shaped torsion bar after cold heading;
step 6: repeating steps 1 to 5 until all wire cold heading is completed.
2. The cold heading process of the special-shaped torsion bar as claimed in claim 1, wherein the first, second and third cold heading are all realized by using a cold heading die.
3. The cold heading process of the special-shaped torsion bar as claimed in claim 2, wherein three sets of cold heading dies are provided, and the three sets of cold heading dies are sequentially installed on a cold heading machine.
4. The utility model provides a cold-heading device of dysmorphism torsion bar which characterized in that includes: the device comprises a cutting mechanism, an ejection mechanism, a conveying mechanism and three dies; wherein,
the cutting mechanism cuts off the wire rods, and the ejection mechanism jacks up the cut wire rods;
the conveying mechanism moves between the ejection mechanism and the three molds for feeding;
the three molds include: the wire shaping and chamfering die comprises a first die for shaping and chamfering wires, a second die for extruding and bundling the head of the wires to form special-shaped flower teeth, and a third die for positioning and forming the flange head and the rod part of the special-shaped flower teeth, wherein the three dies are sequentially arranged.
5. The cold-heading device for a shaped torsion bar according to claim 4, wherein the first die comprises: a first master mold and a first die corresponding to the first master mold, wherein,
the first main die comprises a first main die shell, a first main die cushion block arranged in the first main die shell, a first main die core and a first main die ejector pin, wherein a first main die cavity is arranged in the first main die core, one end of the first main die ejector pin is fixed on the first main die cushion block, and the other end of the first main die ejector pin is driven by a driving mechanism to move and extends into or retreats from the first main die cavity;
the first punching die comprises a first punching die shell, a first punching die cushion block and a first punching die ejector pin, the first punching die cushion block and the first punching die ejector pin are arranged in the first punching die shell, a first punching die cavity matched with the first main die cavity is formed in the first punching die shell, one end of the first punching die ejector pin is fixed on the first punching die cushion block, and the other end of the first punching die ejector pin is driven by a driving mechanism to move and extends into or withdraws from the first punching die cavity;
the first main die cavity and the first die cavity jointly form a shaping bundle chamfering die cavity of the wire.
6. The cold-heading device for a shaped torsion bar according to claim 4, wherein the second die comprises: a second master mold and a second die corresponding to the second master mold; wherein,
the second master mold includes: the second main mould shell is positioned in the second main mould shell, and a second main mould cushion block, a second lower main mould core, a second upper main mould core and a second main mould thimble are sequentially arranged from bottom to top; a second lower main model cavity is arranged in the second lower main model core, a second upper main model cavity is arranged in the second upper main model core, one end of a second main model thimble is fixed on the second main model cushion block, and the other end of the second main model thimble extends into the second upper main model cavity and the second lower main model cavity and is driven by a driving mechanism to move up and down;
the second die includes: the second die stamping die is characterized by comprising a second die stamping die shell, a second die stamping cushion block and a second die stamping thimble, wherein the second die stamping cushion block and the second die stamping thimble are arranged in the second die stamping die shell, one end of the second die stamping thimble is fixed on the second die stamping cushion block, and the other end of the second die stamping thimble is matched with the second main die thimble to work.
7. The cold-heading device for a shaped torsion bar according to claim 4, wherein the third die comprises: a third master mold and a third die corresponding to the third master mold; wherein,
the third master mold includes: the third main mould core is internally provided with a third main mould cavity, one end of the third main mould thimble is fixed on the third main mould cushion block, and the other end of the third main mould thimble is driven by a driving mechanism to move and extend into or withdraw from the third main mould cavity;
the third punching die comprises a third punching die shell, a third punching die cushion block and a third punching die ejector pin, the third punching die cushion block and the third punching die ejector pin are arranged in the third punching die shell, a third punching die cavity matched with the third main die cavity is formed in the third punching die shell, one end of the third punching die ejector pin is fixed on the third punching die cushion block, and the other end of the third punching die ejector pin is driven by the driving mechanism to move and extends into or withdraws from the third punching die cavity;
and the third main die cavity and the third die cavity jointly form a special-shaped torsion bar die cavity.
8. The cold-heading device for the profiled torsion bar as claimed in claim 4, wherein the material cutting mechanism is a shear die or a shear.
9. The cold-heading device for the shaped torsion bar according to claim 4, wherein the transmission mechanism is a clip.
10. The cold-heading device for the shaped torsion bar of claim 4, wherein the three dies are all mounted on a cold-heading machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235338.0A CN106694792A (en) | 2016-12-28 | 2016-12-28 | Cold heading device and process for specially-shaped torsion rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235338.0A CN106694792A (en) | 2016-12-28 | 2016-12-28 | Cold heading device and process for specially-shaped torsion rod |
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| Publication Number | Publication Date |
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| CN106694792A true CN106694792A (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611235338.0A Pending CN106694792A (en) | 2016-12-28 | 2016-12-28 | Cold heading device and process for specially-shaped torsion rod |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931497A (en) * | 2017-11-27 | 2018-04-20 | 上海鸿基金属制品有限公司 | Combine the cold-heading molding technique of fixed link |
| CN108856631A (en) * | 2018-05-25 | 2018-11-23 | 昆山麦克司博精密机械有限公司 | The cold-heading molding technique of automobile gear |
| CN111014564A (en) * | 2019-12-27 | 2020-04-17 | 上海鸿基金属制品有限公司 | Chamfering forming process and die structure for middle hexagonal flange of stud bolt |
| CN111451432A (en) * | 2020-05-25 | 2020-07-28 | 东风汽车紧固件（武汉）有限公司 | Mold ejector pin ejection protection mechanism |
| CN111531098A (en) * | 2020-04-28 | 2020-08-14 | 思进智能成形装备股份有限公司 | Cold heading forming process of automobile safety belt torsion shaft |
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| CN108856631A (en) * | 2018-05-25 | 2018-11-23 | 昆山麦克司博精密机械有限公司 | The cold-heading molding technique of automobile gear |
| CN111014564A (en) * | 2019-12-27 | 2020-04-17 | 上海鸿基金属制品有限公司 | Chamfering forming process and die structure for middle hexagonal flange of stud bolt |
| CN111531098A (en) * | 2020-04-28 | 2020-08-14 | 思进智能成形装备股份有限公司 | Cold heading forming process of automobile safety belt torsion shaft |
| CN111451432A (en) * | 2020-05-25 | 2020-07-28 | 东风汽车紧固件（武汉）有限公司 | Mold ejector pin ejection protection mechanism |
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Application publication date: 20170524 |
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