CN204052418U - The screw type elasticity die holder that a kind of radial dimension is fine-tuning - Google Patents
The screw type elasticity die holder that a kind of radial dimension is fine-tuning Download PDFInfo
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- CN204052418U CN204052418U CN201420480408.9U CN201420480408U CN204052418U CN 204052418 U CN204052418 U CN 204052418U CN 201420480408 U CN201420480408 U CN 201420480408U CN 204052418 U CN204052418 U CN 204052418U
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- resilient sleeve
- interior
- taper
- die holder
- taper sheath
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Abstract
The utility model discloses the screw type elasticity die holder that a kind of radial dimension is fine-tuning, it comprises pressing plate (1), outer ring (2), outer resilient sleeve (3), interior resilient sleeve (4), outer toroid (5), taper sheath (6) and interior annulus (7), outer ring (2) is set in the outside of outer resilient sleeve (3), pressing plate (1) is installed on one end of outer ring (2), the inside of outer resilient sleeve (3) is provided with interior resilient sleeve (4), interior resilient sleeve (4) taper sheath (6) and outer toroid (5) are installed successively, in outer toroid (5) and taper sheath (6), core rod (9) and interior annulus (7) are installed successively, the inner surface of interior resilient sleeve (4) is taper seat A, the outer surface of taper sheath (6) is taper seat B.The beneficial effects of the utility model are: mentality of designing is novel, and anti-fatigue performance is strong, core rod can be utilized again, reduce cost.
Description
Technical field
The utility model relates to cold extrusion die technical field, the screw type elasticity die holder that particularly a kind of radial dimension is fine-tuning.
Background technology
Along with the develop rapidly of auto manufacturing, the demand of auto parts and components to high accuracy, complex precise gear is increasing, and particularly some machineds are more difficult, processing cost is high, have lightweight requirements and large in batches straight-tooth gear, ring gear etc.Therefore, precision die forging, precise cold extrusion process have more and more wide demand in automobile industry.
In finish forge, precise cold extrusion die industry, in order to improve die life, usually mould (punch or die) is split as die holder and core rod two parts.Core rod directly contacts blank, and for formed product, general core rod adopts the high hard materials such as tool steel to make, material cost and processing charges higher; Die holder is used for fixing core rod, is connected with equipment dynamic head, and adopt conventional material, cost is lower.When after core rod wearing and tearing, only need to change core rod, relative integration mold, cost is comparatively cheap.Though die holder does not participate in shaping directly, but in forming process, be also in extruding or tensile stress, can fatigue failure produced and scrap.In addition, conventional die holder only provides the effect of fixing core rod, and function is comparatively single.
Utility model content
The purpose of this utility model is the shortcoming overcoming prior art, screw type elasticity die holder fine-tuning for fixing core rod, radial dimension in a kind of extruding, Forging Technology is provided, be applicable to the fixing of core rod in precision die forging mould, cold extrusion die, be specially adapted to the fixing of low module Precise Spline Gear flank profil precise cold extrusion molding core rod.
The purpose of this utility model is achieved through the following technical solutions: the screw type elasticity die holder that a kind of radial dimension is fine-tuning, it comprises pressing plate, outer ring, outer resilient sleeve, interior resilient sleeve, outer toroid, taper sheath and interior annulus, outer ring sleeve is loaded on the outside of outer resilient sleeve, the inwall of one end of outer ring is provided with the annular position-stopping plate stoping outer resilient sleeve to stretch out outer ring, the other end of outer ring is provided with the pressing plate outer resilient sleeve be packaged in outer ring, the inside of outer resilient sleeve is provided with interior resilient sleeve, the inside of interior resilient sleeve is provided with taper sheath and outer toroid successively along direction from front to back, along the direction after front arriving, core rod and interior annulus are installed successively in outer toroid and taper sheath, the inner surface of interior resilient sleeve is the taper seat A increased gradually along direction internal diameter from front to back, the outer surface of taper sheath is the taper seat B increased gradually along direction external diameter from front to back.
Described taper seat A has 1.5 ° of semi-cone angle, and taper seat B has 1.5 ° of semi-cone angle.
Adopt interference fit between described outer resilient sleeve and interior resilient sleeve, adopt interference fit between taper sheath and core rod, the rear end face of taper sheath presses on the front end face of outer toroid, and the rear end face of outer toroid presses on pressing plate; The front end face that the rear end face of core rod presses on interior annulus is that the rear end face of interior annulus presses on pressing plate.
Described outer resilient sleeve, interior resilient sleeve are processed by helical wound by spring steel band.
The utility model has the following advantages:
Relative to traditional die holder, die holder of the present utility model structurally have employed several steel loops composition, and each steel loop is made by coil type spring steel band, and the high-quality anti-fatigue performance of spring steel makes the life-span of die holder be improved.Core rod participates in the process of forging, extruding, directly and blank contact friction, to use after a period of time the precise decreasing because of wearing and tearing, when the radial dimension of core rod increases due to wearing and tearing, utilize the spring function of steel loop, the radial dimension of core rod can be finely tuned by the method for interference fit, core rod can be utilized again, reduce costs further.
Die holder mentality of designing of the present utility model is novel, and be suitable for the fine setting (being wound around pretension with steel cable) of other similar pretension of equipping as mill type cylinder, large-scale bearing seat etc. or cylinder diameter, reference is large.
The invention solves conventional die holder anti-fatigue ability is weak, service life is low problem and the problem that conventional die holder radial dimension can not regulate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
In figure, 1-pressing plate, 2-outer ring, the outer resilient sleeve of 3-, resilient sleeve in 4-, 5-outer toroid, 6-taper sheath, annulus in 7-, 8-annular position-stopping plate, 9-core rod.
Detailed description of the invention
Be further described the utility model below in conjunction with accompanying drawing, protection domain of the present utility model is not limited to the following stated:
As shown in Figure 1, the screw type elasticity die holder that a kind of radial dimension is fine-tuning, it comprises pressing plate 1, outer ring 2, outer resilient sleeve 3, interior resilient sleeve 4, outer toroid 5, taper sheath 6 and interior annulus 7, described outer ring 2 is cylindrical tube, outer ring 2 is set in the outside of outer resilient sleeve 3, the inwall of one end of outer ring 2 is provided with the annular position-stopping plate 8 stoping outer resilient sleeve 3 to stretch out outer ring 2, the other end of outer ring 2 is provided with the pressing plate 1 outer resilient sleeve 3 be packaged in outer ring 2, pressing plate 1 is fixedly connected with outer ring 2 by screw, the rear end face of described annular position-stopping plate 8 is the taper surface increased gradually along direction internal diameter from front to back, the part that described outer resilient sleeve 3 contacts with the rear end face of annular stop surface is the taper surface increased gradually along direction external diameter from front to back.
With the one end residing for annular position-stopping plate 8 for front end, to install one end of pressing plate 1 for rear end, the inside of outer resilient sleeve 3 is provided with interior resilient sleeve 4, the inside of interior resilient sleeve 4 is provided with taper sheath 6 and outer toroid 5 successively along direction from front to back, installs core rod 9 and interior annulus 7 successively in outer toroid 5 and taper sheath 6 along the direction after front arriving.
The inner surface of interior resilient sleeve 4 is the taper seat A increased gradually along direction internal diameter from front to back, taper seat A has 1.5 ° of semi-cone angle, the outer surface of taper sheath 6 is the taper seat B increased gradually along direction external diameter from front to back, taper seat B has 1.5 ° of semi-cone angle, by the axial relative movement between interior resilient sleeve 4 and taper sheath 6, the change that taper sheath 6 internal diameter is trickle can be made.Die holder in the utility model mainly utilizes diminishing of taper sheath 6 internal diameter, thus extrusion die core 9, makes that core rod 9 radial dimension is trickle to diminish, and offsets core rod 9 internal diameter increased because of wearing and tearing, core rod 9 can be utilized again.
Be cylindrical tube outside outer resilient sleeve 3, interior resilient sleeve 4, outer toroid 5 and interior annulus 7, adopt interference fit between outer resilient sleeve 3 and interior resilient sleeve 4, between taper sheath 6 and core rod 9, adopt interference fit, between interior resilient sleeve 4 and taper sheath 6, adopt interference fit.The rear end face of taper sheath 6 presses on the front end face of outer toroid 5, and the rear end face of outer toroid 5 presses on pressing plate 1, and outer toroid 5 is used for limiting the position of taper sheath 6, can according to the regulated quantity customized lengths of core rod 9 internal diameter; The front end face that the rear end face of core rod 9 presses on interior annulus 7 is that the rear end face of interior annulus 7 presses on pressing plate 1, and interior annulus 7 is used for limiting the position of core rod 9.Pressing plate 1 and outer ring 2 are connected and fixed by screw and spring washer, outer resilient sleeve 3, interior resilient sleeve 4, outer toroid 5, taper sheath 6, interior annulus 7 are fixed as entirety simultaneously, composition die holder.
Outer resilient sleeve 3, interior resilient sleeve 4 are formed by helical wound aft-loaded airfoil by spring steel band, and winding form is divided into radial growth, axially growth, composite winding is radial and axial increases by three kinds simultaneously.Outer resilient sleeve 3, interior resilient sleeve 4 can improve anti-fatigue performance due to flexible existence, increase service life.
Interior resilient sleeve 4 of the present utility model and taper sheath 6 are when axial relative movement, the conical surface extrudes mutually, to be extruded the amplitude of increase very little owing to having higher rigidity for interior resilient sleeve 4 and outer resilient sleeve 3, taper sheath 6 rigidity is lower be squeezed after internal diameter diminish, thus extrusion die core 9, make core rod 9 radial dimension that trickle diminishing occur, offset core rod 9 internal diameter increased because of wearing and tearing, core rod 9 can be utilized again.
Claims (4)
1. the screw type elasticity die holder that a radial dimension is fine-tuning, it is characterized in that: it comprises pressing plate (1), outer ring (2), outer resilient sleeve (3), interior resilient sleeve (4), outer toroid (5), taper sheath (6) and interior annulus (7), outer ring (2) is set in the outside of outer resilient sleeve (3), the inwall of one end of outer ring (2) is provided with the annular position-stopping plate (8) stoping outer resilient sleeve (3) to stretch out outer ring (2), the other end of outer ring (2) is provided with the pressing plate (1) outer resilient sleeve (3) be packaged in outer ring (2), the inside of outer resilient sleeve (3) is provided with interior resilient sleeve (4), the inside of interior resilient sleeve (4) is provided with taper sheath (6) and outer toroid (5) successively along direction from front to back, along the direction after front arriving, core rod (9) and interior annulus (7) are installed successively in outer toroid (5) and taper sheath (6), the inner surface of interior resilient sleeve (4) is the taper seat A increased gradually along direction internal diameter from front to back, the outer surface of taper sheath (6) is the taper seat B increased gradually along direction external diameter from front to back.
2. the screw type elasticity die holder that a kind of radial dimension according to claim 1 is fine-tuning, is characterized in that: described taper seat A has 1.5 ° of semi-cone angle, and taper seat B has 1.5 ° of semi-cone angle.
3. the screw type elasticity die holder that a kind of radial dimension according to claim 1 is fine-tuning, it is characterized in that: between described outer resilient sleeve (3) and interior resilient sleeve (4), adopt interference fit, interference fit is adopted between taper sheath (6) and core rod (9), the rear end face of taper sheath (6) presses on the front end face of outer toroid (5), and the rear end face of outer toroid (5) presses on pressing plate (1); The front end face that the rear end face of core rod (9) presses on interior annulus (7) is that the rear end face of interior annulus (7) presses on pressing plate (1).
4. the screw type elasticity die holder that a kind of radial dimension according to claim 1 is fine-tuning, is characterized in that: described outer resilient sleeve (3), interior resilient sleeve (4) are processed by helical wound by spring steel band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420480408.9U CN204052418U (en) | 2014-08-25 | 2014-08-25 | The screw type elasticity die holder that a kind of radial dimension is fine-tuning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420480408.9U CN204052418U (en) | 2014-08-25 | 2014-08-25 | The screw type elasticity die holder that a kind of radial dimension is fine-tuning |
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| Publication Number | Publication Date |
|---|---|
| CN204052418U true CN204052418U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420480408.9U Active CN204052418U (en) | 2014-08-25 | 2014-08-25 | The screw type elasticity die holder that a kind of radial dimension is fine-tuning |
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| CN (1) | CN204052418U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226706A (en) * | 2014-08-25 | 2014-12-24 | 中国航天科技集团公司长征机械厂 | Screw-type elastic mold base with micro-adjustable radial dimension |
-
2014
- 2014-08-25 CN CN201420480408.9U patent/CN204052418U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226706A (en) * | 2014-08-25 | 2014-12-24 | 中国航天科技集团公司长征机械厂 | Screw-type elastic mold base with micro-adjustable radial dimension |
| CN104226706B (en) * | 2014-08-25 | 2016-04-20 | 中国航天科技集团公司长征机械厂 | The screw type elasticity die holder that a kind of radial dimension is fine-tuning |
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| GR01 | Patent grant |