CN108580790A - A kind of automotive wheel cup nut multi-station cold-heading method and its mold - Google Patents
A kind of automotive wheel cup nut multi-station cold-heading method and its mold Download PDFInfo
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- CN108580790A CN108580790A CN201810325047.3A CN201810325047A CN108580790A CN 108580790 A CN108580790 A CN 108580790A CN 201810325047 A CN201810325047 A CN 201810325047A CN 108580790 A CN108580790 A CN 108580790A
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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
- B21K1/00—Making machine elements
- B21K1/64—Making machine elements nuts
- B21K1/70—Making machine elements nuts of special shape, e.g. self-locking nuts, wing nuts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/24—Making other particular articles nuts or like thread-engaging members
-
- 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
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- Forging (AREA)
Abstract
A kind of automotive wheel cup nut multi-station cold-heading method and its mold, including pre-shaped, shaping, finishing, flange formation, compound crowded, six stations of precisive shaped, pre-shaped, shaping, finishing, flange formation, compound crowded, six one machines of station of precisive shaped complete processing to biscuit successively；Because biscuit is mild steel, biscuit easy tos produce tearing when shearing, the problem for causing shear fissure to cause forming part cracking, so the present invention is using six one-step forming methods；The present invention improves product size precision, and product qualification rate is high, material use, and shaping efficiency is high.
Description
Technical field
The present invention relates to a kind of automotive wheel cup nut multi-station cold-heading method and its molds.
Background technology
In Investment in fastener industry, wheel cup nut is a kind of high-intensity fasteners on automobile, is connection automotive wheel wheel
Hub and spoke vital part, because its dimensions is big, complex geometry, required precision is high, the mechanics of ML20Cr materials used
Performance is higher, and Plastic Forming deformation is complicated, and technology difficulty is big, therefore, most to divide sequence extrusion process to produce using punching machine, in
Between annealing, phosphatization production process it is more, flow is complicated, and production efficiency is low, unstable quality, and size scattered error is big.
The structure of wheel cup nut 1 as shown in Figure 1, wheel cup nut 1 be divided into from top to bottom body flange 101,
The inner cavity of cylinder 102, arc-shaped transitional surface 103, tetragonal body 104, body flange and cylinder is thread spindle connecting hole 105；Such as Fig. 2
Shown, wherein the outer surface of body flange is divided into spherical surface 1011, cylindrical surface 1012, circular conical surface 1013 under upper, to flange
The requirement of body is as follows：Spherical radius is 22mm, spherical surface be to axis of thread jerk value≤0.15mm, circular conical surface cone angle be 45 degree,
The required precision of part is higher.
Invention content
A kind of automotive wheel cup nut multi-station cold-heading method of present invention offer and its mold solve prior art and exist
Production efficiency is low, unstable quality, the big problem of size scattered error.
In order to solve the above-mentioned technical problem, the technical scheme is that：A kind of automotive wheel cup nut multistation is cold
Upsetting method, is as follows：
（1）Pre-shaped：It will be carried out in a diameter of Φ 27.6mm, the biscuit feeding cold pier mold of multistation that thickness is 42.8mm pre- whole
Shape, the both ends of the surface of biscuit once squeeze chamfered section that is smooth, while squeezing out biscuit lower edge, the diameter of biscuit after pre-shaped
Increase 0.25-0.3mm, thickness reduces 0.1mm；
（2）Shaping：By step（1）Obtained pre-shaped biscuit, which is sent into the cold pier mold of multistation, carries out shaping, the both ends of biscuit
Face secondary extrusion is smooth, while squeezing out the chamfered section of biscuit upper end-face edge, after shaping biscuit diameter increase 0.25-0.3mm,
Thickness reduces 0.1mm；
（3）Finishing：By step（2）Obtained shaping biscuit, which is sent into the cold pier mold of multistation, carries out finishing, the both ends of the surface of biscuit
Squeeze three times smooth, while the chamfered section at biscuit both ends is smooth again, and the diameter of biscuit increases 0.2-0.25mm, thickness after finishing
Reduce 0.3mm；
（4）Flange formation：By step（3）Obtained finishing biscuit is sent into crush ribs in the cold pier mold of multistation, finishing biscuit
Upper end upsetting go out flange, while shallow bore hole is squeezed out in flange；The workpiece of extrusion forming be divided into from top to bottom body flange,
Cylinder, the axial length of workpiece reduces 2 mm, the diameter of cylinder increases 0.25-0.3mm；The outer surface of the flange is from upper
Under be divided into spherical surface, cylindrical surface, circular conical surface；
（5）It is compound to squeeze：By step（4）Progress is compound in the obtained cold pier mold of workpiece feeding multistation squeezes, and the lower of workpiece is rectified
It is extruded into and counter in tetragonal body while workpiece cylinder is extruded into deep hole and cylinder and the stepped part of tetragonal body connecting place is squeezed into circle
Arc transition face；The aperture of the deep hole is Φ 18.45~Φ 18.62mm, and the parallel across flats of tetragonal body are 22 mm, with four
The diagonal line of cube makees 27 mm of a diameter of Φ of circumscribed circle；
（6）Precisive shaped：By step（5）Obtained workpiece, which is sent into the cold pier mold of multistation, carries out smart extrusion forming, smart school flange
Spherical surface, cylindrical surface, circular conical surface, the size upsetting squeeze on spherical surface and cylindrical surface to 35.83 mm of Φ 35.5- Φ.
A kind of automotive wheel cup nut multi-station cold-heading mold, it is characterised in that：Including being disposed with from right to left
Pre-shaped mold, shaping mould, smart shaping mould, flange formation mold, compound extruding mold and portion precise molding die, pre-shaped mold
For the both ends of the surface of smooth biscuit and the chamfered section of biscuit lower edge, shaping mould is used for the both ends of the surface and biscuit of smooth biscuit
The chamfered section of upper end-face edge, smart shaping mould are used for the both ends of the surface and two chamfered sections of smooth biscuit, and flange formation mold is for cold
The body flange of upsetting cup nut, compound extruding mold are used for deep hole, cylinder and the tetragonal body of cold-heading cup nut, portion precise molding die
Flange for cold-heading cup nut.
Above-mentioned technical proposal is further limited, the flange formation mold is made of the first cavity plate and the first punch-pin,
First cavity plate is made of the first die sleeve, the first upper mold core, the first lower mold core, the first screw thread cushion block and the first Lifting Device, and first
Upper mold core and the first lower mold core are set gradually from top to bottom in the mold core cavities of the first die sleeve, and the first screw thread cushion block is mounted on first
In the bottom of die sleeve, the first upper mold core and the first lower mold core are limited by the first screw thread cushion block in the first die sleeve, the first liftout
Device is fixed in the first screw thread cushion block；The core cavity of first upper mold core is divided into conical cavity, cylindrical cavity from top to bottom, under first
The core cavity of mold core is divided into chamfering chamber, liftout hole from top to bottom；First punch-pin is made of the first punch housing and the first punch,
The working end inner cavity of first punch housing is spherical cavity, and the first punch is fixed in the first punch housing, the work of the first punch
Face is equipped with the boss that can squeeze shallow bore hole, and boss can stretch in conical cavity.The advantages of this structure：Mold core is by upper and lower two mold cores structure
At, in this way be convenient for make, reduce mold core manufacture difficulty to improve the dimensional accuracy of core cavity；The mold core of this structure is easy to more
The part for changing damage, reduces production cost.
Above-mentioned technical proposal is further limited, the compound extruding mold is made of the second cavity plate and the second punch-pin, the
Two cavity plates are made of the second die sleeve, the second upper mold core, the second lower film core, the second screw thread cushion block and the second Lifting Device, on second
Mold core and the second lower mold core are set gradually from top to bottom in the mold core cavities of the second die sleeve, and the second screw thread cushion block is mounted on the second mould
In the bottom of set, the second upper mold core and the second lower mold core are limited by the second screw thread cushion block in the second die sleeve, the second liftout dress
It sets and is fixed in the second screw thread cushion block；The core cavity of second upper mold core is divided into flange chamber, deep hole forming chamber from top to bottom, and second
The core cavity of lower mold core is divided into arc-shaped transitional surface forming cavity, tetragonal body forming cavity, the working end energy of the second punch-pin from top to bottom
Stretch to deep hole intracavitary.The advantages of this structure：Mold core is made of upper and lower two mold core, is convenient for making in this way, reduces mold core making
Difficulty is to improve the dimensional accuracy of core cavity；The mold core of this structure is easily changed the part of damage, reduces production cost.
Above-mentioned technical proposal is further limited, the portion precise molding die is made of third cavity plate and third punch-pin, the
Three cavity plates are made of third die sleeve, third upper mold core, third lower mold core, third screw thread cushion block and third Lifting Device, in third
Mold core and third lower mold core are set gradually from top to bottom in the mold core cavities of third die sleeve, and third screw thread cushion block is mounted on third mould
In the bottom of set, third upper mold core and third lower mold core are limited by third screw thread cushion block in third die sleeve, third liftout dress
It sets and is fixed in third screw thread cushion block；The core cavity of third upper mold core is divided into circular cone precisive shaped chamber from top to bottom, cylinder holds
Receive chamber, the core cavity of third lower mold core can accommodate arc-shaped transitional surface and tetragonal body, and third punch-pin is rushed by third punch housing and third
The working end inner cavity of head composition, third punch housing is spherical surface precisive shaped chamber, and third punch is fixed in third punch housing, the
The working end of three punches is precisive shaped boss, and precisive shaped boss can stretch to circular cone precisive shaped intracavitary.The advantages of this structure：Mold core
It is made of upper and lower two mold core, is convenient for making in this way, reduces mold core manufacture difficulty to improve the dimensional accuracy of core cavity；This knot
The mold core of structure is easily changed the part of damage, reduces production cost.
Advantageous effect：1. the both ends of the surface of biscuit squeeze smooth and chamfered section second formation three times, make biscuit uniformity, consistent
Property it is more preferable, when being avoided that postorder flange formation spherical surface crack the problem of；
2. flange is separately formed and is extruded with shallow bore hole on it, punch-pin is set to be not easily broken, long lifespan, while flange dimension is easy to protect
Card；3. deep hole and tetragonal body be separately formed to solve later process tetragonal body location difficulty, square is not easy pair in mold
Accurate problem；A procedure 4. flange precisive shaped is got the last place, it is ensured that flange spherical surface jerk value smaller, dimensional accuracy is more
It is high；5. the present invention has further the advantage that：1）Biscuit substitutes bar, and stock utilization improves 15%；2）Multistation upsetting squeeze technique,
Processing precision of products can be improved；3）Multi-station cold-heading one-pass molding is efficient；4）Cup nut produced by the present invention has size
The advantage that precision is high, product qualification rate is high, to improve production efficiency.
Description of the drawings
Fig. 1 is cup nut structural schematic diagram in background technology.
Fig. 2 is A partial enlarged views in Fig. 1.
Fig. 3 is biscuit structural schematic diagram in the present invention.
Fig. 4 is structural schematic diagram after biscuit pre-shaped in the present invention.
Fig. 5 is structural schematic diagram after biscuit shaping in the present invention.
Fig. 6 is structural schematic diagram after biscuit finishing shape in the present invention.
Fig. 7 is workpiecc lug molding structure schematic diagram in the present invention.
Fig. 8 is deep hole of workpiece in the present invention, cubic forming structure schematic diagram.
Fig. 9 is flange forming die structure schematic diagram of the present invention.
Figure 10 is multi-station cold-heading mold structure diagram in the present invention.
Figure 11 is compound extruding mold structural schematic diagram in the present invention.
Figure 12 is portion precise molding die structural schematic diagram in the present invention.
Specific implementation mode
A kind of automotive wheel cup nut multi-station cold-heading method, is as follows：
（1）Pre-shaped：As shown in figure 3, a diameter of Φ 27.6mm, the biscuit 2 that thickness is 42.8mm are sent into the cold pier mould of multistation
Tool in carry out pre-shaped, as shown in figure 4, the both ends of the surface of biscuit once squeeze it is smooth, while squeeze out biscuit lower edge fall
Corner, the diameter of biscuit increases 0.3mm after pre-shaped, thickness reduces 0.1mm；
（2）Shaping：By step（1）Obtained pre-shaped biscuit 2, which is sent into the cold pier mold of multistation, carries out shaping, as shown in figure 5,
The both ends of the surface secondary extrusion of biscuit is smooth, while squeezing out the chamfered section of biscuit upper end-face edge, and the diameter of biscuit increases after shaping
0.3mm, thickness reduce 0.1mm；
（3）Finishing：By step（2）Obtained shaping biscuit 2, which is sent into the cold pier mold of multistation, carries out finishing, as shown in fig. 6, disk
The both ends of the surface of material squeeze smooth three times, while the chamfered section at biscuit both ends is smooth again, and the diameter of biscuit increases after finishing
0.25mm, thickness reduce 0.3mm；
（4）Flange formation：By step（3）Obtained finishing biscuit is sent into crush ribs in the cold pier mold of multistation, such as Fig. 7 institutes
Show, the upper end upsetting of finishing biscuit 2 goes out flange, while shallow bore hole is squeezed out in flange；The workpiece 3 of extrusion forming from top to bottom according to
Secondary to be divided into body flange, cylinder, the axial length of workpiece reduces 2 mm, the diameter of cylinder increases 0.3mm；Outside the flange
Surface is divided into spherical surface, cylindrical surface, circular conical surface under upper；
（5）It is compound to squeeze：By step（4）Progress is compound in the obtained cold pier mold of the feeding multistation of workpiece 3 squeezes, as shown in figure 8, work
Lower rectify of part is extruded into the anti-ladder for being extruded into deep hole and cylinder and tetragonal body connecting place in tetragonal body while workpiece cylinder
Portion is squeezed into arc-shaped transitional surface；The aperture of the deep hole is Φ 18.45~Φ 18.62mm, and the parallel across flats of tetragonal body are
22 mm, 27 mm of a diameter of Φ for making circumscribed circle with the diagonal line of tetragonal body；The parallel across flats of the tetragonal body refer to four
The spacing of parallel two vertical edge in cube；
（6）Precisive shaped：By step（5）Obtained workpiece 3, which is sent into the cold pier mold of multistation, carries out smart extrusion forming, such as Fig. 9 institutes
Show, spherical surface, cylindrical surface, the circular conical surface of smart school flange, the size upsetting squeeze on spherical surface and cylindrical surface is obtained to 35.83 mm of Φ 35.5- Φ
To cup nut as shown in Figure 1.
As shown in Figure 10, a kind of automotive wheel cup nut multi-station cold-heading mold, including be disposed with from right to left
Pre-shaped mold 4, shaping mould 5, smart shaping mould 6, flange formation mold 7, compound extruding mold 8 and portion precise molding die 9, it is pre- whole
Shape mold is used for the both ends of the surface of smooth biscuit for the both ends of the surface of smooth biscuit and the chamfered section of biscuit lower edge, shaping mould
And the chamfered section of biscuit upper end-face edge, smart shaping mould are used for the both ends of the surface and two chamfered sections of smooth biscuit, flange formation mold
For the body flange of cold-heading cup nut, compound extruding mold be used for cold-heading cup nut deep hole, cylinder and tetragonal body, essence at
Flange of the pattern tool for cold-heading cup nut；
As shown in figure 9, the flange formation mold 7 forms 702 by the first cavity plate 701 and the first punch-pin, the first cavity plate is by first
7015 groups of die sleeve 7011, the first upper mold core 7012, the first lower mold core 7013, the first screw thread cushion block 7014 and the first Lifting Device
At the first upper mold core and the first lower mold core are set gradually from top to bottom in the mold core cavities of the first die sleeve, the first screw thread cushion block peace
In the bottom of the first die sleeve, the first upper mold core and the first lower mold core are limited by the first screw thread cushion block in the first die sleeve,
First Lifting Device is fixed in the first screw thread cushion block；The core cavity of first upper mold core 7012 is divided into conical cavity from top to bottom
70121, the core cavity of cylindrical cavity 70122, the first lower mold core 7013 is divided into chamfering chamber 70131, liftout hole from top to bottom
70132；First punch-pin is made of the first punch housing 7021 and the first punch 7022, and the working end inner cavity of the first punch housing is
Spherical cavity 70211, the first punch are fixed in the first punch housing, and the working face of the first punch, which is equipped with, can squeeze the convex of shallow bore hole
Platform 70221, boss can stretch in conical cavity；
As shown in Figure 10, the compound extruding mold 8 is made of the second cavity plate 801 and the second punch-pin 802, and the second cavity plate is by the second mould
The 8011, second upper mold core 8012, the second lower film core 8013, the second screw thread cushion block 8014 and the second Lifting Device 8015 composition are covered,
Second upper mold core and the second lower mold core are set gradually from top to bottom in the mold core cavities of the second die sleeve, and the second screw thread cushion block is mounted on
In the bottom of second die sleeve, the second upper mold core and the second lower mold core are limited by the second screw thread cushion block in the second die sleeve, and second
Lifting Device is fixed in the second screw thread cushion block；The core cavity of second upper mold core 8012 be divided into from top to bottom flange chamber 80121,
The core cavity of deep hole forming chamber 80122, the second lower mold core 8013 is divided into arc-shaped transitional surface forming cavity 80131, four from top to bottom
The working end of cube forming cavity 80132, the second punch-pin can stretch to deep hole intracavitary；
As shown in figure 11, the portion precise molding die 9 is made of third cavity plate 901 and third punch-pin 902, and third cavity plate is by third mould
Set 9011, third upper mold core 9012, third lower mold core 9013, third screw thread cushion block 9014 and third Lifting Device 9015 form,
Third upper mold core and third lower mold core are set gradually from top to bottom in the mold core cavities of third die sleeve, and third screw thread cushion block is mounted on
In the bottom of third die sleeve, third upper mold core and third lower mold core are limited by third screw thread cushion block in third die sleeve, third
Lifting Device is fixed in third screw thread cushion block；The core cavity of third upper mold core 9012 is divided into circular cone precisive shaped chamber from top to bottom
90121, the core cavity of cylinder accommodating chamber 90122, third lower mold core 9013 can accommodate arc-shaped transitional surface and tetragonal body, third punch-pin
It is made of third punch housing 9021 and third punch 9022, the working end inner cavity of third punch housing is spherical surface precisive shaped chamber
90211, third punch is fixed in third punch housing, and the working end of third punch is precisive shaped boss 90221, and precisive shaped is convex
Platform can stretch to circular cone precisive shaped intracavitary；
As shown in figure 3, the shaping mould 4, shaping mould 5, the structure of smart shaping mould 6 are identical, three is by cavity plate and convex
Mould forms, and the work of punch-pin can stretch in the core cavity of mold core, and only the shape of the cavity plate shape chamber of three differs, and belongs to
In the prior art, structure does not elaborate；The shaping mould, shaping mould, smart shaping mould, flange formation mold,
Cavity plate in compound extruding mold and portion precise molding die is fixed on according to ordered arrangement in lower template, shaping mould, sizing die
Punch-pin in tool, smart shaping mould, flange formation mold, compound extruding mold and portion precise molding die is fixed according to ordered arrangement
On the bottom surface of cope plate, cope plate is connect by guide post with lower template.
Heretofore described screw thread cushion block refers to the screw thread that limiting cushion block is connected through a screw thread that mode is fixed on die sleeve bottom
In hole；The Lifting Device can eject biscuit or workpiece out of mold, belong to the prior art, do not elaborate.
The present invention includes pre-shaped, shaping, finishing, flange formation, compound crowded, six stations of precisive shaped, and disk round wires material is sent
After entering device Host, the biscuit of cutting is fed through by the first station by the blank knife bar of cutting mechanism, successively pre-shaped, whole
Shape, finishing, flange formation, compound crowded, six one machines of station of precisive shaped are completed, and the workpiece of each station is automatic by enclosed clamp
Transmission, wherein first three clamp is overturn, and rear two clamps translation is not overturn.Because biscuit is mild steel, biscuit is easy production when shearing
Raw tearing, causes shear fissure to be moved to part spherical surface, part is caused to crack, so the present invention uses six one-step forming methods；This hair
It is bright with traditional five station (pre-shaped, shaping, pre- flange formation, flange formation, it is compound squeeze) compare product size precision higher, produce
Product qualification rate is high, and stock utilization is high.
Do not elaborate place in this specification, the technology being known in the art.
Claims (5)
1. a kind of automotive wheel cup nut multi-station cold-heading method, is as follows：
（1）Pre-shaped：It will be carried out in a diameter of Φ 27.6mm, the biscuit feeding cold pier mold of multistation that thickness is 42.8mm pre- whole
Shape, the both ends of the surface of biscuit once squeeze chamfered section that is smooth, while squeezing out biscuit lower edge, the diameter of biscuit after pre-shaped
Increase 0.25-0.3mm, thickness reduces 0.1mm；
（2）Shaping：By step（1）Obtained pre-shaped biscuit, which is sent into the cold pier mold of multistation, carries out shaping, the both ends of biscuit
Face secondary extrusion is smooth, while squeezing out the chamfered section of biscuit upper end-face edge, after shaping biscuit diameter increase 0.25-0.3mm,
Thickness reduces 0.1mm；
（3）Finishing：By step（2）Obtained shaping biscuit, which is sent into the cold pier mold of multistation, carries out finishing, the both ends of the surface of biscuit
Squeeze three times smooth, while the chamfered section at biscuit both ends is smooth again, and the diameter of biscuit increases 0.2-0.25mm, thickness after finishing
Reduce 0.3mm；
（4）Flange formation：By step（3）Obtained finishing biscuit is sent into crush ribs in the cold pier mold of multistation, finishing biscuit
Upper end upsetting go out flange, while shallow bore hole is squeezed out in flange；The workpiece of extrusion forming be divided into from top to bottom body flange,
Cylinder, the axial length of workpiece reduces 2 mm, the diameter of cylinder increases 0.25-0.3mm；The outer surface of the flange is from upper
Under be divided into spherical surface, cylindrical surface, circular conical surface；
（5）It is compound to squeeze：By step（4）Progress is compound in the obtained cold pier mold of workpiece feeding multistation squeezes, and the lower of workpiece is rectified
It is extruded into and counter in tetragonal body while workpiece cylinder is extruded into deep hole and cylinder and the stepped part of tetragonal body connecting place is squeezed into circle
Arc transition face；The aperture of the deep hole is Φ 18.45~Φ 18.62mm, and the parallel across flats of tetragonal body are 22 mm, with four
The diagonal line of cube makees 27 mm of a diameter of Φ of circumscribed circle；
（6）Precisive shaped：By step（5）Obtained workpiece, which is sent into the cold pier mold of multistation, carries out smart extrusion forming, smart school flange
Spherical surface, cylindrical surface, circular conical surface, the size upsetting squeeze on spherical surface and cylindrical surface to 35.83 mm of Φ 35.5- Φ.
2. a kind of automotive wheel cup nut multi-station cold-heading mold, it is characterised in that：It is pre- including being disposed with from right to left
Shaping mould, shaping mould, smart shaping mould, flange formation mold, compound extruding mold and portion precise molding die, pre-shaped mold are used
In the both ends of the surface of smooth biscuit and the chamfered section of biscuit lower edge, shaping mould is used for the both ends of the surface and biscuit of smooth biscuit
The chamfered section of end margin, smart shaping mould are used for the both ends of the surface and two chamfered sections of smooth biscuit, and flange formation mold is used for cold-heading
The body flange of cup nut, compound extruding mold are used for deep hole, cylinder and the tetragonal body of cold-heading cup nut, and portion precise molding die is used
In the flange of cold-heading cup nut.
3. a kind of automotive wheel cup nut multi-station cold-heading method and its mold according to claim 2, it is characterised in that：
The flange formation mold is made of the first cavity plate and the first punch-pin, and the first cavity plate is by under the first die sleeve, the first upper mold core, first
The mold core cavities of mold core, the first screw thread cushion block and the first Lifting Device composition, the first upper mold core and the first lower mold core in the first die sleeve
It inside sets gradually from top to bottom, the first screw thread cushion block is mounted in the bottom of the first die sleeve, the first upper mold core and the first lower mold core
By the limit of the first screw thread cushion block in the first die sleeve, the first Lifting Device is fixed in the first screw thread cushion block；First upper mold core
Core cavity be divided into conical cavity, cylindrical cavity from top to bottom, the core cavity of the first lower mold core is divided into chamfering chamber, top from top to bottom
Expect hole；First punch-pin is made of the first punch housing and the first punch, and the working end inner cavity of the first punch housing is spherical cavity, the
One punch is fixed in the first punch housing, and the working face of the first punch is equipped with the boss that can squeeze shallow bore hole, and boss can stretch into
To conical cavity.
4. being existed according to a kind of automotive wheel cup nut multi-station cold-heading method and its mold, feature described in Claims 2 or 3
In：The compound extruding mold is made of the second cavity plate and the second punch-pin, and the second cavity plate is by the second die sleeve, the second upper mold core, second
The mold core of lower film core, the second screw thread cushion block and the second Lifting Device composition, the second upper mold core and the second lower mold core in the second die sleeve
Intracavitary is set gradually from top to bottom, and the second screw thread cushion block is mounted in the bottom of the second die sleeve, the second upper mold core and the second lower die
Core is limited by the second screw thread cushion block in the second die sleeve, and the second Lifting Device is fixed in the second screw thread cushion block；Second upper mold
The core cavity of core is divided into flange chamber, deep hole forming chamber from top to bottom, and the core cavity of the second lower mold core is divided into circle from top to bottom
The working end of arc transition face forming cavity, tetragonal body forming cavity, the second punch-pin can stretch to deep hole intracavitary.
5. a kind of automotive wheel cup nut multi-station cold-heading method and its mold according to claim 4, it is characterised in that：
The portion precise molding die is made of third cavity plate and third punch-pin, and third cavity plate is by third die sleeve, third upper mold core, third lower die
Core, third screw thread cushion block and third Lifting Device composition, third upper mold core and third lower mold core are in the mold core cavities of third die sleeve
It sets gradually from top to bottom, third screw thread cushion block is mounted in the bottom of third die sleeve, and third upper mold core and third lower mold core are logical
The limit of third screw thread cushion block is crossed in third die sleeve, third Lifting Device is fixed in third screw thread cushion block；Third upper mold core
Core cavity is divided into circular cone precisive shaped chamber, cylinder accommodating chamber from top to bottom, and the core cavity of third lower mold core can accommodate arc transition
Face and tetragonal body, third punch-pin are made of third punch housing and third punch, and the working end inner cavity of third punch housing is ball
Face precisive shaped chamber, third punch are fixed in third punch housing, and the working end of third punch is precisive shaped boss, and precisive shaped is convex
Platform can stretch to circular cone precisive shaped intracavitary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325047.3A CN108580790A (en) | 2018-04-12 | 2018-04-12 | A kind of automotive wheel cup nut multi-station cold-heading method and its mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325047.3A CN108580790A (en) | 2018-04-12 | 2018-04-12 | A kind of automotive wheel cup nut multi-station cold-heading method and its mold |
Publications (1)
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| CN109175919A (en) * | 2018-11-02 | 2019-01-11 | 思进智能成形装备股份有限公司 | A kind of cold-heading processing method of wing screw |
| CN109732029A (en) * | 2019-02-27 | 2019-05-10 | 临清市万合轴承有限公司 | Cold headers are used in bearing roller production technology and bearing roller production |
| CN110788273A (en) * | 2019-09-26 | 2020-02-14 | 浙江瑞强汽车部件有限公司 | Automobile engine decorative bolt and cold heading forming process thereof |
| CN111687370A (en) * | 2020-06-22 | 2020-09-22 | 浙江明泰控股发展股份有限公司 | Forming process and forming device of cap nut |
| CN112453208A (en) * | 2020-10-23 | 2021-03-09 | 上海威克迈龙川汽车发动机零件有限公司 | Novel multi-station progressive die of oil sprayer seat and stamping method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109175919A (en) * | 2018-11-02 | 2019-01-11 | 思进智能成形装备股份有限公司 | A kind of cold-heading processing method of wing screw |
| CN109732029A (en) * | 2019-02-27 | 2019-05-10 | 临清市万合轴承有限公司 | Cold headers are used in bearing roller production technology and bearing roller production |
| CN110788273A (en) * | 2019-09-26 | 2020-02-14 | 浙江瑞强汽车部件有限公司 | Automobile engine decorative bolt and cold heading forming process thereof |
| CN111687370A (en) * | 2020-06-22 | 2020-09-22 | 浙江明泰控股发展股份有限公司 | Forming process and forming device of cap nut |
| CN112453208A (en) * | 2020-10-23 | 2021-03-09 | 上海威克迈龙川汽车发动机零件有限公司 | Novel multi-station progressive die of oil sprayer seat and stamping method |
| CN112453208B (en) * | 2020-10-23 | 2023-01-03 | 赛沃智造(上海)科技有限公司 | Novel multi-station progressive die of oil sprayer seat and stamping method |
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