CN202779427U - Bent whole concave die - Google Patents
Bent whole concave die Download PDFInfo
- Publication number
- CN202779427U CN202779427U CN 201220366520 CN201220366520U CN202779427U CN 202779427 U CN202779427 U CN 202779427U CN 201220366520 CN201220366520 CN 201220366520 CN 201220366520 U CN201220366520 U CN 201220366520U CN 202779427 U CN202779427 U CN 202779427U
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- wearing layer
- whole die
- boss
- matrix
- circular hole
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Abstract
The utility model relates to a bent whole concave die which comprises a matrix. An arc-shaped hole recessing inwards is arranged in the middle of an upper end face of the matrix, and an arc-shaped hard alloy wear-resistant layer matched with the arc-shaped hole in shape is arranged in the arc-shaped hole. The bent whole concave die is high in accuracy of size of a forming face, long in service life and low in manufacturing cost.
Description
Technical field
The utility model relates to field of machining, especially a kind of curved whole die of producing engine bearing.
Background technology
Used bearing shell on the automobile engine is compressing by the curved whole die of accurate bearing shell.The applying contact-making surface of its bearing shell arc surface requires to reach 〉=more than 95%, and therefore very strict to the die Geometrical Tolerance Principle of compacting bearing shell: zero≤0.005; ∥≤0.005; ⊙≤0.005; Surface roughness Ra 0.2.The difficulty of the moulding concave surface of the curved whole die of processing bearing shell is very large.Especially in order to improve the use birthday noodle of moulding concave surface, and adopt Hardmetal materials to make the curved whole die of accurate bearing shell, the not only compressing difficulty of semi-finished product, easy crackle, and the difficulty that its processing of plain steel is compared in the processing of the moulding concave surface of sintered hard alloy finished product is higher, and processing cost increases.
Summary of the invention
The purpose of this utility model is: for the problem of above-mentioned existence, provide a kind of composite bent whole die, this product has low cost of manufacture, long service life, and the characteristics of easily processing.
In order to solve above technical problem, the curved whole die of the utility model comprises matrix, and particularly a kind of steel matrix has the indent circular hole in the middle part of the described matrix upper surface, is fixed with the suitable circular arc wearing layer of shape in the circular hole, such as hard alloy abrasion-resistant layer.The curved whole die of the composite structure that the utility model adopts, body portion adopts that steel part has that cost is low, shock resistance and plastic deformation characteristics, the wearing layer of the compound one deck high rigidity of moulding concave surface, high-wearing feature, can significantly improve the service life of product, make integral product have preferably combination property.And owing to adopt composite construction, when having solved the use Hardmetal materials and having made the curved whole die of accurate bearing shell, the compressing difficulty of semi-finished product, the easy defective of crackle.
Further improving is that described wearing layer and circular hole are bonding to be connected.The mode that hard alloy abrasion-resistant layer and steel part matrix are connected is more, is connected such as welding, such as rivet clasp.But because when welding temperature high (1000 ° more than the C) and alloy are different from the cold and hot contraction of steel part, so that a large amount of internal stress of organization internal remnants after the welding, in the fine finishining of follow-up wearing layer to high rigidity, high fragility, wearing layer is cracked.And adopt the bonding mode that is connected, not only bonding firmly the stress that also can effectively lower alloy inside is concentrated, and guarantees the first-time qualification rate of the processing of follow-up die forming surface.
Further improvement is, also is provided with boss on the described circular hole bonding plane, and boss and wearing layer contact-making surface are cambered surface, and described boss cambered surface and wearing layer cambered surface are suitable.Because the Geometrical Tolerance Principle of the curved whole die of accurate bearing shell is very strict, and glue is flexible material, after applying glue between matrix and two bonds of wearing layer, bonding by pushing, binding face glue thickness distributes uneven easily, form and position tolerance between the bond easily deforms, can't satisfy technological requirement, and adhesive strength can't guarantee, and the arc surface boss of arranging between two bonds can form flexible adhesive-layer and the supporting layer of rigidity between circular hole and two bonds of wearing layer.Both can play a supporting role to the wearing layer that is bonded on the circular hole, guaranteed that the form and position tolerance between the bond satisfied technological requirement, guarantee again the glue even thickness between two bonds, improve adhesive strength.Particularly, by boss being set to the support of wearing layer, can also improve the service life of product.The wearing layer of curved whole die can experience hundreds of thousands even inferior impact up to a million in the bearing shell moulding, the bonding force of glue can lose efficacy gradually because of fatigue; Go the power of withstanding shocks and increased supporting layer, can reduce the impact that adhesive-layer is subjected to, guarantee the adhesive strength of adhesive-layer, improve service life.The number of boss is determined according to the size of binding face, is generally arranged respectively 1 at the two ends of binding face.The thickness of boss is 0.5-2.5mm, is preferably 2-2.5mm.
Adopt its accuracy of manufacture of the utility model mould to reach technological requirement, and can reduce greatly cost, shorten the Mould Machining cycle, make the user obtain the curved whole concave die of high-quality accurate bearing shell.
Description of drawings
The utility model will describe by embodiment and with reference to the mode of accompanying drawing, wherein:
Fig. 1 the utility model example structure schematic diagram.
Fig. 2 is the schematic top plan view of Fig. 1 matrix.
Fig. 3 is the front view of Fig. 1 matrix.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As Figure 1-3, the curved whole die of the utility model comprises matrix 3, and there is indent circular hole 5 at middle part, described matrix upper surface, and circular hole is interior by suitable circular arc hard alloy abrasion-resistant layer 1 bonding being connected of adhesive-layer 2 and shape.Above-mentioned matrix is preferably the steel matrix.Above-mentioned wearing layer is preferably hard alloy abrasion-resistant layer, and hard alloy abrasion-resistant layer is processed surfaces externally and internally before bonding, guarantees to reach technological requirement.The two ends of circular hole bonding plane also are welded with two boss 4 as the bonding benchmark of hard alloy abrasion-resistant layer, and boss can be steel material or suitable hard material, and boss thickness is 0.5-2.5mm, is preferably 2-2.5mm.Boss and wearing layer contact-making surface are cambered surface, and described cambered surface is in strict accordance with the processing of hard alloy abrasion-resistant layer exterior arc surface, both mutual deviation ∥≤0.005;
The utility model has adopted the bonding way of alloy and steel part greatly to reduce internal stress; The welding boss guarantees concentricity.Instructions for use has been satisfied in bus and ∥≤0.005, baseplane (A benchmark among the figure) that mould arc surface 80mm after bonding is long.The after heat treatment fine finishining of steel part that the curved whole die of accurate bearing shell adopts usually forms, its steel die is shorter service life, 20 ~ 250,000 generally speaking, and adopt carbide alloy to do the forming surface of die, increase by 4 ~ 5 times its service life, reach more than 1,000,000, reached 2,000,000 service life the highest.
The above only is preferred embodiment of the present utility model, all any modifications of doing within spirit of the present utility model and principle, is equal to and replaces and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. a curved whole die is characterized in that: comprise matrix, in the middle part of the described matrix upper surface indent circular hole is arranged, be fixed with the suitable circular arc wearing layer of shape in the circular hole.
2. curved whole die as claimed in claim 1, it is characterized in that: described wearing layer is hard alloy abrasion-resistant layer.
3. curved whole die as claimed in claim 1, it is characterized in that: described matrix is the steel matrix.
4. such as the arbitrary described curved whole die of claim 1-3, it is characterized in that: described wearing layer and circular hole are bonding to be connected.
5. curved whole die as claimed in claim 4, it is characterized in that: also be provided with boss on the bonding bonding plane that is connected of described circular hole and wearing layer, boss and wearing layer contact-making surface are cambered surface, and described boss cambered surface and wearing layer cambered surface are suitable.
6. curved whole die as claimed in claim 5, it is characterized in that: described boss is at least 2.
7. curved whole die as claimed in claim 4, it is characterized in that: the thickness of described boss is 0.5-2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366520 CN202779427U (en) | 2012-07-27 | 2012-07-27 | Bent whole concave die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366520 CN202779427U (en) | 2012-07-27 | 2012-07-27 | Bent whole concave die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202779427U true CN202779427U (en) | 2013-03-13 |
Family
ID=47806769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220366520 Expired - Lifetime CN202779427U (en) | 2012-07-27 | 2012-07-27 | Bent whole concave die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202779427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567287A (en) * | 2012-07-27 | 2014-02-12 | 自贡硬质合金有限责任公司 | Bending female die and processing method thereof |
-
2012
- 2012-07-27 CN CN 201220366520 patent/CN202779427U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567287A (en) * | 2012-07-27 | 2014-02-12 | 自贡硬质合金有限责任公司 | Bending female die and processing method thereof |
| CN103567287B (en) * | 2012-07-27 | 2016-09-28 | 自贡硬质合金有限责任公司 | Bending female die and processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |