CN202963346U - Hard alloy cold forging die for truck axle - Google Patents
Hard alloy cold forging die for truck axle Download PDFInfo
- Publication number
- CN202963346U CN202963346U CN 201220615150 CN201220615150U CN202963346U CN 202963346 U CN202963346 U CN 202963346U CN 201220615150 CN201220615150 CN 201220615150 CN 201220615150 U CN201220615150 U CN 201220615150U CN 202963346 U CN202963346 U CN 202963346U
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- CN
- China
- Prior art keywords
- carbide alloy
- cold forging
- forging die
- cavity
- hard alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a hard alloy cold forging die for a truck axle. The hard alloy cold forging die comprises a hard alloy die core and an outer prestressing ring sleeved on the die core, wherein the cavity of the hard alloy die core is a hollow cavity; the upper end surface of the cavity is a cylinder; the lower end surface of the cavity is a cube; and the middle of the cavity is a smooth curved surface. The hard alloy cold forging die for the truck axle has the advantages of long service life and high wear resistance. The production process of a produced product is simplified, the produced product is molded at one time, and the requirements on the performances of the product are met.
Description
Technical field
The utility model relates to a kind of cold forging die, is specially truck vehicle bridge carbide alloy cold forging die
Background technology
Vehicle bridge is connected with vehicle frame by suspension, and its two ends installing wheel can transmit motive power and moment of torsion between vehicle frame and wheel.The vehicle bridge part becomes hollow form, and mid portion is square, and two ends are cylindrical.In vehicle bridge traditional handicraft process, in the middle of vehicle bridge, the forming technology one of square tube is to adopt steel plate to carry out bending, then is integrated through being welded to connect; The 2nd, adopt hot technique for rolling.The first technique has the shortcomings such as weldquality is unstable, and the second technique can cause square tube inwall generation wrinkle, through constantly vibration, easily generates the potential crack source.The processing method that generally adopts at present is that forge hot and follow-up mach method are processed, but this explained hereafter cost is high, and efficient is low, and follow-up machining allowance is large.
Summary of the invention
Goal of the invention: in order to solve the deficiencies in the prior art, the utility model provides a kind of truck vehicle bridge carbide alloy cold forging die.
Technical scheme: in order to realize above purpose, adopt a kind of truck vehicle bridge carbide alloy cold forging die described in the utility model, comprise the carbide alloy core rod and be placed in the prestressing force outer ring of this core rod outside.The die cavity of described carbide alloy core rod is cavity, and the upper surface of described die cavity is cylinder, and the lower surface is cube, and the centre is smooth surface.
This mould adopts two layers of prestressing combination cavity die structure, described prestressing force outer ring can provide radial tightening power for this mould, to produce circumferential compressive force, the tangential stress that produces in when work can the partial offset mold cavity is to alleviate internal pressure to the destruction of mould.
As preferably, described cubical eight drift angles are chamfering.
As preferably, the upper surface of described die cavity is the high cylinder of 5～15mm, is used as the blank location, and the lower surface is the high cube of 3～8mm.
As preferably, this mold materials is carbide alloy, and the hardness of described alloy is not less than HRA85.Because mould generally all will bear huge pressure, described carbide alloy can guarantee that the pressure that mold cavity is received can not surpass the strength degree of mold materials itself.
As preferably, be interference fit between described die cavity and prestressing force outer ring, the magnitude of interference is 0.3%-0.7%.
Beneficial effect: truck vehicle bridge described in the utility model has long service life with the carbide alloy cold forging die, anti abrasive advantage; The production technology of having produced product simplification, once-forming satisfies the properties of product requirement.
Description of drawings
Fig. 1 is the top view that the truck vehicle bridge is used the carbide alloy cold forging die;
Fig. 2 is the left view that the truck vehicle bridge is used the carbide alloy cold forging die;
Wherein: 1 carbide alloy core rod; 2 prestressing force outer rings; 3: die cavity
The specific embodiment
As shown in Figure 1, a kind of truck vehicle bridge carbide alloy cold forging die, comprise carbide alloy core rod 1 and be placed in the prestressing force outer ring 2 of this core rod outside, the die cavity 3 of described carbide alloy core rod 1 is cavity, this die cavity 3 upper surfaces be 10mm(in 5～15mm scope all can) high cylinder charging basket, do blank location use, the lower surface be 5mm(in 3～8mm scope all can) high cube, the centre is smooth surface.The magnitude of interference between described die cavity 3 and prestressing force outer ring 2 is 0.3%-0.7%.This mold materials is carbide alloy, and the hardness of this carbide alloy is not less than HRA85.
Truck vehicle bridge described in the utility model is positioned over it in mould bases during with the work of carbide alloy cold forging die, and prestressing force outer ring 2 is fixed with mould bases, and material space is left out in carbide alloy core rod 1 below.Pipe to be processed is positioned in cylindrical charging basket, adopt forging equipment to exert pressure along the pipe axis direction, pipe just can be along one end motion of lower surface cube from upper surface cylinder one end of die cavity 3 to die cavity 3, simultaneously, pipe is because the extruding force that is subject to die cavity 3 deforms, when pipe moved to lower surface cube one side, the outer surface of pipe namely became square.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, its objective is to allow to be familiar with these those skilled in the art and can to understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalents or modifications of having done according to the utility model Spirit Essence are within all should being encompassed in protection domain of the present utility model.
Claims (6)
1. truck vehicle bridge carbide alloy cold forging die, comprise carbide alloy core rod (1) and be placed in the prestressing force outer ring (2) of this carbide alloy core rod (1) outside, it is characterized in that: the die cavity (3) of described carbide alloy core rod (1) is cavity, the upper surface of described die cavity (3) is cylinder, the lower surface is cube, and the centre is smooth surface.
2. truck vehicle bridge carbide alloy cold forging die according to claim 1, it is characterized in that: described cubical eight drift angles are chamfering.
3. truck vehicle bridge carbide alloy cold forging die according to claim 1, it is characterized in that: described cylindrical height is 5～15mm, described cubical height is 3～8mm.
4. truck vehicle bridge carbide alloy cold forging die according to claim 1 is characterized in that: the material that its adopts is carbide alloy, and the hardness of this carbide alloy is more than or equal to HRA85.
5. truck vehicle bridge carbide alloy cold forging die according to claim 1, is characterized in that: be interference fit between described die cavity (3) and prestressing force outer ring (2).
6. truck vehicle bridge carbide alloy cold forging die according to claim 5, it is characterized in that: the magnitude of interference of described interference fit is 0.3%-0.7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220615150 CN202963346U (en) | 2012-11-20 | 2012-11-20 | Hard alloy cold forging die for truck axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220615150 CN202963346U (en) | 2012-11-20 | 2012-11-20 | Hard alloy cold forging die for truck axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202963346U true CN202963346U (en) | 2013-06-05 |
Family
ID=48504476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220615150 Expired - Lifetime CN202963346U (en) | 2012-11-20 | 2012-11-20 | Hard alloy cold forging die for truck axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202963346U (en) |
-
2012
- 2012-11-20 CN CN 201220615150 patent/CN202963346U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215400, No. 88, Zheng He Dong Road, Taicang, Jiangsu, Suzhou Patentee after: TAICANG JIUXIN PRECISION MOLD Co.,Ltd. Address before: 215400, No. 88, Zheng He Dong Road, Taicang, Jiangsu, Suzhou Patentee before: TAICANG JIUXIN PRECISION MOLD Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |