CN209875806U - Convex hull steel backing and blank thereof - Google Patents
Convex hull steel backing and blank thereof Download PDFInfo
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- CN209875806U CN209875806U CN201822275159.0U CN201822275159U CN209875806U CN 209875806 U CN209875806 U CN 209875806U CN 201822275159 U CN201822275159 U CN 201822275159U CN 209875806 U CN209875806 U CN 209875806U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
- 239000010959 steel Substances 0.000 title claims abstract description 50
- 241000357293 Leptobrama muelleri Species 0.000 claims abstract description 26
- 230000007704 transition Effects 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 abstract description 19
- 238000009434 installation Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000002146 bilateral effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 235000012438 extruded product Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
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Abstract
The utility model discloses a convex closure steel backing, including the steel backing body, all be equipped with other wing on the both ends of steel backing body, all be equipped with the convex closure on the wing of both sides. The convex hulls are provided with convex planes parallel to the steel back body, the upper side faces of the convex hulls are provided with inclined planes connected to the convex planes, and the projection profiles of the lower side faces of the convex hulls are curved. The convex hull can be well suitable for different vehicle types, is suitable for the thicknesses of different brake discs and the caliper distance of a brake caliper, and can effectively reduce the total weight of the brake pad. Meanwhile, the convex hull also increases the contact area with the installation clamping position, so that the installation is more stable. A corresponding blank comprises a blank body. The blank body is provided with a convex edge, and the plane projection of the lower side surface of the convex edge is a stepped curve. The stepped curve of the convex edge can ensure that the processing difficulty is effectively reduced when the convex hull is generated by extrusion, the back surface is prevented from generating concave folds and the convex hull is not full, and the quality of finished products is improved. This utility model is used for the automobile manufacturing field.
Description
Technical Field
The utility model relates to an automobile manufacturing field especially relates to a convex hull steel backing and blank thereof.
Background
In the braking system of the automobile, a brake pad is the most critical safety part, and the quality of the braking effect is the decisive role played by the brake pad. The brake pad is generally composed of a steel backing, an adhesive heat-insulating layer and a friction block. The back steel can play a role in positioning and uniformly transmitting pressure, the friction block is generally adhered to the back steel, and a circuit is arranged on the back steel to detect whether the friction block is completely rubbed or not if necessary. The thickness of the used brake disc and the caliper distance of the brake caliper are different aiming at different vehicle types, so the required thickness of the steel backing is also different. The existing steel back is generally uniform in thickness, the total weight of the brake pad can be improved by integrally increasing the thickness of the steel back according to the thickness requirement, the material and transportation cost are improved, the action of the brake pad in a brake system is easily influenced, and the brake effect is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a stable practical convex closure steel backing, a corresponding blank that is used for making this convex closure steel backing with it.
The utility model adopts the technical proposal that: the utility model provides a convex hull steel backing, includes the steel backing body, all is equipped with other wing on the both ends of steel backing body, all is equipped with the convex hull on the wing of both sides, is equipped with the convex plane parallel with the steel backing body on each convex hull, is equipped with the inclined plane on the side of going up of each convex hull, and each inclined plane is connected to the convex plane by other wing, and the downside projection profile of each convex hull is crooked.
As an improvement of the scheme, each inclined plane is crescent.
As an improvement of the scheme, the lower side surfaces of the convex hulls are perpendicular to the convex plane, the plane projection of the lower side surfaces comprises a first curve, a second curve, a third curve and a fourth curve which are sequentially connected, the second curve bends towards the direction of the inclined plane, and the third curve bends towards the direction away from the inclined plane.
As an improvement of the scheme, the first curve, the third curve and the fourth curve are all straight lines, and the connecting positions of the first curve, the second curve, the third curve and the fourth curve are in smooth transition.
As an improvement of the scheme, the steel backing body is provided with two slotted holes which are respectively distributed with the side wings close to the two ends.
As the improvement of the scheme, the steel back body is provided with a groove which is positioned on the upper end edge of the steel back.
As an improvement of the scheme, the steel back body is provided with three convex nails which are uniformly distributed on the steel back body.
A blank for producing the convex hull steel backing in any one of the above schemes comprises a blank body, wherein the blank body is provided with a convex edge, and the plane projection of the lower side surface of the convex edge is a stepped curve.
As an improvement of the scheme, the stepped curves comprise a fifth curve, a sixth curve, a seventh curve and an eighth curve which are sequentially connected, the connecting positions of the fifth curve, the sixth curve, the seventh curve and the eighth curve are smooth and excessive, the shapes and the sizes of the upper end edge and the lower end edge of the blank body and the steel back body are consistent, and the plane projection of the convex edge is larger than that of the side wing.
As an improvement of the scheme, the part of the convex projection along the plane, which is larger than the plane projection of the side wing, is a blank allowance, and the volume of the blank allowance is at least 2.5 times of the volume of the convex hull.
The utility model has the advantages that: through the convex hull steel back, the convex hull can be well suitable for different vehicle types, is suitable for the thicknesses of different brake discs and the caliper distance of brake calipers, can effectively reduce the total weight of a brake pad, saves materials, can increase a certain thickness on a use function position by the local convex structure of the convex hull, keeps the original thickness unchanged at other positions, increases the contact area with an installation clamping position, and ensures that the installation is stable; the blank for producing the convex hull steel backing correspondingly can effectively reduce the processing difficulty when the convex hull is generated by extrusion through the stepped curve of the convex edge, avoid the back surface from generating concave folds and the convex hull from being not full, and improve the quality of finished products.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is a schematic structural view of the convex hull steel back;
FIG. 2 is a schematic side view of the convex hull steel back;
FIG. 3 is a schematic view of the structure of the blank;
fig. 4 is a schematic diagram of a partial comparison of the convex hull steel backing and the blank.
Detailed Description
Referring to fig. 1 and 2, the utility model relates to a convex hull steel backing, including steel backing body 1. The material of the steel backing body 1 is generally carbon steel Q235B, SAP440, SS400, etc., which can provide good rigidity and deformation resistance. Both ends of the steel back body 1 are provided with side wings, and both side wings are provided with convex hulls. Except for two side wings, the shape of the steel back body 1 is consistent with the shape and the size of most friction blocks on the market at other parts of the steel back body 1, and the thickness of the steel back body 1 is uniform. The convex hull is provided with a convex plane 25 parallel to the steel backing body 1, which is used for increasing the contact surface of the installation clamping and pulling and improving the installation stability. Generally, the projection profile of the lower side surface of the convex hull at different positions is curved in order to adapt to different brake caliper shapes.
The upper side surface of the convex hull is provided with a slope 26, and the slope 26 is crescent-shaped, and the slope 26 is connected to the convex plane 25 by a side wing. The inclined plane 26 is used for transition of the convex hull, so that the connection strength of the convex hull on the steel backing body 1 can be effectively improved. The ramp 26 is generally produced by extrusion of this convex hull.
As a preferred embodiment, the lower sides of the convex hulls are each perpendicular to the convex plane 25. The downside of convex closure perpendicular to steel backing body 1 up-and-down terminal surface, the downside of convex closure is vertical section promptly, can obtain through cutting the clout after the extrusion.
In a preferred embodiment, the steel backing body 1 is provided with two slots 4, the two slots 4 are respectively distributed on the side wings close to the two ends, and the slots 4 are used as positioning holes for the friction material. The steel backing body 1 is provided with a groove 5, and the groove 5 is positioned on the upper end edge of the steel backing and used for installing an alarm. Three convex nails 3 are arranged on the steel backing body 1, and the convex nails 3 are uniformly distributed on the steel backing body 1 and are mainly used for riveting the silencing sheet.
In general, the shape of the steel back body 1 is a bilateral symmetry pattern, and the slot holes 4 and the convex nails 3 are distributed according to bilateral symmetry, and the grooves 5 are positioned at the bilateral symmetry axis position of the steel back body 1. Meanwhile, the two side wings and the convex hulls on the side wings are symmetrical left and right, so that the uniform and effective acting force of the convex hull steel back on the friction block is kept.
Referring to fig. 3, a blank for producing a convex hull steel backing according to any one of the preceding claims comprises a blank body 6. The blank body 6 is generally formed by stamping and cutting, and the upper end edge and the lower end edge of the blank body are consistent with the shape and the size of the steel back body 1. A convex edge is arranged on the blank body 6, and the plane projection of the lower side surface of the convex edge is a stepped curve. The stepped curve is determined according to the required filling amount, and can adapt to the projection contour curve of the lower side surface of most convex hulls. The convex hull is formed by extruding the convex edge in the upper direction, most of the convex edges are extruded to form the convex hull, and the extruded edge part needs to be cut after extrusion. Because the blank body 6 is a plate material with uniform thickness, the amount of the prepared filling material can be controlled and extruded by controlling the length of the downward extension of the convex edge. The stepped curve is preferably used to extrude most of the convex hulls when the curve is a three step curve.
In a preferred embodiment, the part of the convex projection, which is larger than the plane projection of the wing, is a blank allowance, and the volume of the blank allowance is at least 2.5 times of the volume of the convex hull. Because the thickness of the blank allowance is consistent, the length of the blank allowance can be controlled to form a stepped curve by changing the length. The length of the blank allowance is not suitable for being too long, and the long blank allowance is easy to cause long metal flow distance and large friction resistance. At normal temperature, along with the increase of deformation, the deformation resistance is increased, and the plasticity and the toughness are reduced, so that the metal is subjected to work hardening. And when the blank with the longer blank allowance is often extruded, the lateral extrusion force needs to reach more than 140bar, so that the extrusion punch is easily broken. And the convex hull of the product produced in the way is not full, the concave wrinkle generated on the back surface is obvious, and the actual requirement is met. The blank hardness can be reduced by annealing the blank with the longer blank allowance before extruding the convex hull, the extrusion forming of the longer blank allowance is facilitated, and the cost is high.
In this example, the total length of the convex hull steel back is 155.2mm and the total width is 63.57 mm. The thickness of the steel backing body 1 is 4.5mm, and the thickness of the convex hull position is 7 mm. The plane projection of the lower side surface of the convex hull is a curve which is partially inwards concavely curved and sequentially comprises a first curve 21, a second curve 22, a third curve 23 and a fourth curve 24 which are connected. The curves herein are a general term for straight and non-straight lines in mathematics, and do not refer to curved lines in the general sense. Wherein the second curve 22 is curved in the direction of the inclined surface 26 and the third curve 23 is folded away from the inclined surface 26. The connecting positions of the first curve 21, the second curve 22, the third curve 23 and the fourth curve 24 are in smooth transition, and round corners are arranged at partial positions. The first curve 21, the third curve 23 and the fourth curve 24 are all straight lines, the first curve 21 and the fourth curve 24 are in a transverse direction, and the third curve 23 is in a vertical direction. The connection of the first curve 21, the second curve 22, the third curve 23 and the fourth curve 24 is designed to match the shape of the brake caliper to facilitate clamping.
A blank for producing the steel backing in the embodiment is characterized in that the stepped curve of the upper convex edge of the blank body 6 comprises a fifth curve 71, a sixth curve 72, a seventh curve 73 and an eighth curve 74 which are connected in sequence. The connecting positions of the fifth curve 71, the sixth curve 72, the seventh curve 73 and the eighth curve 74 are in smooth transition, and the plane projection of the convex edge is larger than that of the side wing. Referring to fig. 4, fifth, sixth, seventh and eighth curves 71, 72, 73 and 74 correspond to the first, second, third and fourth curves 21, 22, 23 and 24, respectively. And the first curve 21, the second curve 22, the third curve 23 and the fourth curve 24 have certain distances from the fifth curve 71, the sixth curve 72, the seventh curve 73 and the eighth curve 74 respectively, so that a certain profile design is formed, and meanwhile, the volume of the blank allowance is controlled to be 2.5 times of the volume of the convex hull. Referring to fig. 4, a partial comparison shows that a conical wing blank 9 is also provided, and the conical wing blank 9 is an existing convex hull steel back blank, but concave wrinkles and incomplete convex hulls are easily generated on the back surface in the process of extruding to form the convex hulls, and the produced products are often over-defective.
When the punch equipment is utilized to extrude the blank, the extrusion punch is firstly contacted with the convex part of the fourth curve 24 of the convex edge, then another convex part is extruded, the internal stress of the material is dispersed, the trend of metal particles is dispersed, and the convex edge is controlled not to be at the same stress concentration point to generate bending and arching. Meanwhile, the lateral extrusion force can be reduced, so that the service life of the extrusion punch is ensured. Because the extrusion punch is limited by the thickness of the convex hull and the height of the convex hull, the size and the strength of the extrusion punch are limited, and the service life of the extrusion punch can be well ensured while the extrusion pressure is reduced. The edge design of the stepped curve reduces the extrusion force by half compared with that of the inverted cone-shaped long blank, and the pressure of the punch only needs 60-70 bar. The required size of the convex hull can be finished through one-time extrusion, the appearance and performance requirements of a convex hull product are met, and the service life of the extrusion convex punch is well ensured. After extrusion is completed, the volume of the extruded material can be ensured to be filled in the convex hull die cavity, and meanwhile, the allowance of the extruded product rim charge is accurate to about 2 mm. And cutting the extruded product rim charge to form a first curve 21, a second curve 22, a third curve 23 and a fourth curve 24 which are connected with the lower end of the convex hull. Next, the groove 5, the slot 4 and the stud 3 are machined to complete the machining from the blank to the convex hull steel back.
Of course, the design creation is not limited to the above embodiments, and the combination of different features of the above embodiments can also achieve good effects. Those skilled in the art can make equivalent changes or substitutions without departing from the spirit of the present invention, and such equivalent changes or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. A convex hull steel backing which is characterized in that: including steel backing body (1), all be equipped with other wing on the both ends of steel backing body (1), two all be equipped with the convex closure on the other wing, each be equipped with on the convex closure with parallel convex plane (25) of steel backing body (1), each be equipped with inclined plane (26) on the side of convex closure, each inclined plane (26) are connected to convex plane (25) by other wing, each the downside projection profile of convex closure is crooked.
2. The convex hull steel back according to claim 1, characterized in that: each inclined surface (26) is crescent-shaped.
3. The convex hull steel back according to claim 2, characterized in that: the downside of convex closure all is perpendicular to convex plane (25), the plane projection of downside is including first curve (21), second curve (22), third curve (23) and fourth curve (24) that connect gradually, second curve (22) are crooked to the direction of inclined plane (26), third curve (23) roll over to the direction of keeping away from inclined plane (26).
4. The convex hull steel backing according to claim 3, characterized in that: the first curve (21), the third curve (23) and the fourth curve (24) are all straight lines, and the connecting positions of the first curve (21), the second curve (22), the third curve (23) and the fourth curve (24) are in smooth transition.
5. The convex hull steel backing according to claim 4, characterized in that: the steel backing body (1) is provided with two slotted holes (4), and the two slotted holes (4) are respectively distributed with side wings close to two ends.
6. The convex hull steel back according to claim 5, characterized in that: the steel backing is characterized in that a groove (5) is formed in the steel backing body (1), and the groove (5) is located on the upper end edge of the steel backing.
7. The convex hull steel backing according to claim 6, characterized in that: the steel backing is characterized in that three convex nails (3) are arranged on the steel backing body (1), and the convex nails (3) are uniformly distributed on the steel backing body (1).
8. A blank for producing a convex hull steel backing according to any one of claims 1 to 7, characterized in that: including blank body (6), be equipped with protruding edge on blank body (6), the planar projection of the downside on protruding edge is cascaded curve.
9. A blank according to claim 8, wherein: stepped curve is including the fifth curve (71), the sixth curve (72), the seventh curve (73) and the eighth curve (74) that connect gradually, the smooth transition of hookup location department of fifth curve (71), sixth curve (72), seventh curve (73) and eighth curve (74), the shape size of the upper end border and the lower extreme border of blank body (6) and steel back body (1) is unanimous, the planar projection on protruding edge is greater than the planar projection of other wing.
10. A blank according to claim 9, wherein: the part of the convex edge plane projection which is larger than the other wing plane projection is a blank allowance, and the volume of the blank allowance is at least 2.5 times of the volume of the convex hull.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822275159.0U CN209875806U (en) | 2018-12-29 | 2018-12-29 | Convex hull steel backing and blank thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822275159.0U CN209875806U (en) | 2018-12-29 | 2018-12-29 | Convex hull steel backing and blank thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209875806U true CN209875806U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822275159.0U Active CN209875806U (en) | 2018-12-29 | 2018-12-29 | Convex hull steel backing and blank thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209875806U (en) |
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- 2018-12-29 CN CN201822275159.0U patent/CN209875806U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20231221 Address after: 512000 2-1, No. 3, industrial transfer park, Taiping Town, Shixing County, Shaoguan City, Guangdong Province Patentee after: Shaoguan Dejia Auto Parts Co.,Ltd. Address before: 511442 No.7, Jinhe Second Road, Shilou Town, Panyu District, Guangzhou, Guangdong Province Patentee before: Shaoguan Chun Hui Beijing Great Automotive Components Co.,Ltd. |