• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method of manufacturing support plates for brake pads and brake pad obtained, wherein a press (100, 200) is used for stamping the support plates (10), and a band (1) is supplied sequentially by steps in the press (100, 200) and for each advance step of the band (1) is performed at least one operation by stamping in the band (1) by a press hit, such that after several press hits the shape of several support plates (10) is obtained in the band (1), by means of at least one of the operations by stamping, the peripheral contour of each of the support plates (10) is partially defined in the band (1) with an oversizing of material (2'), and each support plate (10) is separated from the band (1) by a press stroke where the oversizing of material (2') is cut off. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2714933A1
    申请号:ES201731373
    申请日:2017-11-30
    公开日:2019-05-30
    发明作者:Escorza Jose Antonio Muzquiz
    申请人:TRW Automotive Espana SLU；
    IPC主号:
    专利说明:

    [0001]
    [0002] PROCEDURE FOR MANUFACTURE OF SUPPORT PLATES FOR PADS OF
    [0003]
    [0004] Sector of the technique
    [0005]
    [0006] The invention relates to the manufacture of support plates for brake pads, in particular for vehicle disc brakes.
    [0007]
    [0008] State of the art
    [0009]
    [0010] The brake pads for the disc brakes of vehicles are usually composed of a metal support plate, usually made of steel, and a friction lining that is attached to the support plate and whose mission is to press against the disc with the purpose of generating the braking action.
    [0011]
    [0012] A usual method for the manufacture of the support plates consists of using robotic or manual tools that carry out successive cutting operations on a steel plate to obtain the shape of the support plates. This is a procedure with which support plates of a good finish are obtained, however it turns out to be a slow process and not suitable for the industrial and repetitive manufacture of the plates, since this would lead to an increase in the number of robots used with the consequent increase in cost.
    [0013]
    [0014] To solve this problem it is known to manufacture the support plates by stamping using a press that cuts the shape of the support plate from a metal strip that is passed through the press.
    [0015]
    [0016] The applicant of the present invention employs a method of manufacturing support plates based on a press with a progressive die having several stages, wherein each of the steps corresponds to a forming operation to be performed on the support plate.
    [0017]
    [0018] Thus, said method of manufacturing the support plates comprises supplying a metallic band sequentially by steps in the press, and for each advance step of the band make some conformations by stamping the band by a press stroke, so that after several press punches the shape of several plates is obtained in the band of support.
    [0019]
    [0020] The progressive die has a last stage in which the support plate of the strip is separated, however during the separation a cut is produced in a small area, after which a tearing of the material takes place that to a bad aspect when cutting , so that once the support plates of the band are separated from which they are obtained, it is necessary to take them to an external work station where an operation of repeating the perimeter contour of the plates is carried out to improve the finish of the cut. The poor finish of the perimeter contour entails a problem mainly aesthetic, although it can cause noise problems due to friction, which in the case of large vehicles such as trucks can be very problematic.
    [0021]
    [0022] A manufacturing process is therefore necessary to obtain support plates with a good finish of the lateral cut during the printing operation in the press, and therefore without the need to have to proceed to a later stage of peeling off the press.
    [0023]
    [0024] Object of the invention
    [0025]
    [0026] The invention relates to a process for the manufacture of support plates that are used to obtain brake pads. It is also the object of the invention the brake pad having a support plate obtained by the method of the invention.
    [0027]
    [0028] The manufacturing process of the support plates for brake pads comprises:
    [0029]
    [0030] • use a press for stamping the support plates, and • supply a band sequentially in steps on the press and for each advance step of the belt perform at least one operation by stamping on the belt by a press stroke , such that after several press strokes the shape of several support plates is obtained in the band.
    [0031] - By means of at least one of the operations by stamping, the peripheral contour of each of the support plates with an oversize of material is partially defined in the band, and
    [0032] - each support plate is separated from the band by a press stroke where the oversizing of material is cut off.
    [0033]
    [0034] Thus, on the band, the perimeter contour of the support plates is defined, but with a small thickness that is intended to be subsequently cut at the moment of separating the plate from the band. In this way the material can be cut and there is no tear in the cut when the plate is separated from the band. According to all this, directly at the exit of the press, support plates of a good finish are obtained in the lateral cut, avoiding the need to have a re-grinding of the perimeter contour of the support plates in a subsequent operation outside the the press.
    [0035]
    [0036] It has been foreseen that the oversizing of material with which the perimeter contour of the support plates is partially defined has a thickness of at least 0.5 mm, in order to guarantee a sufficient amount of material that can be properly cut to obtain a good finish in the lateral cut of the perimeter contour of the support plates when they are separated from the band.
    [0037]
    [0038] According to one embodiment of the invention, the perimeter contour with the oversizing of material is obtained with a single press stroke. In this way the support plates can be obtained with two operations by stamping, the first of them consisting of a first press hit where the perimeter contour is partially obtained with the oversizing of material and the second of them consisting of a second hit of press where the support plate of the band is separated while cutting the oversizing of material.
    [0039]
    [0040] According to another embodiment of the invention, at least one of the operations by embossing is partially defined in the band, the perimeter contour of each of the support plates with an excess of material, and subsequently the excess material is partially removed. the perimeter contour of each of the support plates with the oversizing of material.
    [0041]
    [0042] Thus, according to this other embodiment, the perimeter contour with the excess material It is obtained with three press punches and the perimeter contour with the oversizing of material is obtained with three other press punches.
    [0043]
    [0044] In this example, in order to define the perimeter contour of the support plate with the excess of material, a first step is made to advance the strip and a first press is made with which lateral front shapes of the perimeter contour of the plate are defined. of support, then a second step is made to advance the band and a second press is made with which a central front shape, lateral rear forms and front lateral forms of the support plate are defined, and then it is advanced a third step the band and a third press is made with which a central rear shape, and a rear side shapes are defined, defining all shapes with excess material. These operations by stamping allow to obtain pre-cuts in the band that are necessary for the material to flow in the following operations by stamping the press, in which the material of the plates is compressed and therefore tends to flow towards the sides, so that pre-cuts generate gaps that facilitate the flow of material.
    [0045]
    [0046] After defining the perimeter contour of the support plate with the excess of material, a fourth step is advanced by the band and a fourth press is made with which forms are defined on the upper and / or lower face of the plate. support. By this press stroke the web is compressed and the material tends to flow towards the pre-cuts generated in the previous stamping operations.
    [0047]
    [0048] To define the oversizing of material in the perimeter contour of the support plates, the band is advanced a fifth step and a fifth press is made with which the excess material of the central front form is partially removed, then it is made advancing a sixth step the band and a sixth press is made with which the excess material of the central rear form, the lateral front forms, the front lateral forms, and some central lateral forms between the front and rear lateral forms and then a seventh step of the band is advanced and a seventh press strike is made with which the excess material of the rear lateral forms and the rear lateral forms is partially removed.
    [0049]
    [0050] In the separation of the support plate of the band a punch is used that pushes the band entering it in a recess reciprocally to the punch, where the gap has a cutting edge that separates the support plate from the band while cutting the oversizing of material from the perimeter contour of the support plate.
    [0051]
    [0052] The cutting edge has a coating of titanium nitride that favors cutting.
    [0053]
    [0054] The cutting edge has a grooved edge to facilitate the exit of the cut material.
    [0055]
    [0056] The recess has an interior wall that progressively widens from the outside towards the interior, so that the support plate does not rub against the interior wall when the punch introduces the strip into the recess.
    [0057]
    [0058] The perimeter contour of the support plate with the oversizing of material is partially defined, so that the support plate is joined to the metal strip at four points, thereby ensuring that the metal band can continue to advance.
    [0059]
    [0060] Description of the figures
    [0061]
    [0062] Figure 1 shows a plan view of the lower part of the progressive die of the press used to carry out the process of the invention.
    [0063]
    [0064] Figure 2 shows a plan view of the upper part of the progressive die corresponding to the lower part of figure 1.
    [0065]
    [0066] Figure 3 shows the shapes defined in the band when the progressive die shown in the previous figures is used.
    [0067]
    [0068] Figure 3 shows a representation of the lower and upper part of the progressive die aligned together with the band on which the stamping operations are carried out.
    [0069]
    [0070] Figures 5A to 5H represent the forms defined in the band for each of the press blows made with the progressive die shown in Figures 1 and 2.
    [0071]
    [0072] Figure 6 shows a schematic sectional view of the stage of the progressive die in which the support plates of the band are separated.
    [0073] Figure 7 shows an enlarged detail of the previous figure in which the cutting edge with which the excess material of the perimeter contour and the support plates is cut is observed.
    [0074]
    [0075] Figure 8 shows a view of one of the support plates obtained using the progressive die shown in figures 1 and 2.
    [0076]
    [0077] Detailed description of the invention
    [0078]
    [0079] The process for the manufacture of support plates (10) consists of a continuous process of forming a metal strip (1) from a steel coil. Throughout the process, the metal band (1) is subject to a series of stamping operations that progressively and continuously shape the support plates (10) structurally and applicatively. The forming process ends with the separation of the support plates (10) from the metal band (1). The support plates (10) finally obtained are used to apply a friction lining thereon to obtain brake pads.
    [0080]
    [0081] The stamping operations in the metal band (1) are carried out using a press (100,200) with a progressive die, so that for each press strike several forms are made simultaneously in the corresponding metal band (1) to several support plates (10).
    [0082]
    [0083] Figures 1 and 2 show an example of non-limiting embodiment of the press used to make the shapes (11,12,13,14,15,16,17,18) in the metal band (1). Figure 1 shows a plan view of the lower part of the progressive die (100) while figure 2 shows a plan view of the upper part of the progressive die (200).
    [0084]
    [0085] Figure 8 shows one of the support plates (10) obtained with the progressive die of figures 1 and 2 which is represented by its lower face. The support plate (10) has an upper face and a lower face in which slots (17) and a perimeter contour are defined consisting of a side frontal shapes (11) between which a central front shape is located ( 13), front lateral forms (14) which are arranged in continuity to the lateral front shapes (11), rear lateral forms (12) between which is located a central rear shape (15), a rear side shapes (16) which are arranged in continuity with the lateral rear forms (12), and central lateral shapes (18) which are arranged between the front lateral (14) and rear (16) forms.
    [0086]
    [0087] The progressive die shown in FIGS. 1 and 2 has four stages (110,120,130,140, 210,220,230,240) by means of which the stamping operations are carried out. To do this, a relative movement of approach and separation between the lower parts (100) and upper (200) of the progressive die between which the metal band (1) from which the support plates (10) are obtained is made.
    [0088]
    [0089] In the first stage (110,210), first operations are carried out by stamping on the metal strip (1) in order to obtain the perimeter contour of the support plates (10) with an excess of material (2) that will later be removed, thus generating This first stage is pre-cuts (1 ') in the metal band (1) that favor the material flow in subsequent stamping operations where the metal band (1) is subjected to compression.
    [0090]
    [0091] In the second stage (120,220) second operations are carried out by stamping on the metal strip (1) to obtain the shapes (17) on the upper and / or lower faces of the support plate (10), the material of the plate (10) so that the pre-cuts (1 ') obtained in the first stage generate spaces to allow the material to flow.
    [0092]
    [0093] In the third stage (120,220) a third operations are carried out by stamping to partially remove the excess material (2) from the support plates (10) and define in the perimeter contour of the support plates (10) an oversizing of material (2 ') of little thickness that will be subsequently cut.
    [0094]
    [0095] In the fourth stage (120,220) a fourth operation is made by stamping where the oversizing of material (2 ') is cut while the support plates (10) are separated from the metal band (1), so that support plates (10) with a good finish are obtained in its perimeter contour, without the need to subject the support plates to a subsequent re-coating of its perimeter contour.
    [0096]
    [0097] It is expected that the oversizing of material (2 ') that is left in the contour perimeter of the support plates (1) is at least 0.5 mm.
    [0098]
    [0099] Figures 1 to 8 show an example of non-limiting embodiment of the invention, since the shapes defining the perimeter contour of the support plate (10) and the steps of the progressive die can vary depending on the type of support plate ( 10) that is required to manufacture. In any case, the procedure will always involve the definition of the perimeter contour of the support plate (10) with an oversizing of material (2 ') and the separation of the support plate (10) from the metal band (1) therein. operation in which the oversizing of material (2 ') of the perimeter contour of the support plate (10) is cut.
    [0100]
    [0101] Next, the constituent parts of each step of the progressive die (100,200) will be described according to the direction of advance of the metal strip (1) which is represented by the arrow (A) in the figures, that is to say from the first stage ( 110,210) until the fourth stage (140,204) where the support plates (10) are separated from the metal band (1). Accordingly, the terms "front", "front" and "rear" are used to define the parts of the progressive die as a function of the direction of advance (A) of the band (1).
    [0102]
    [0103] In the embodiment of FIG. 2, in which the upper part of the progressive die (200) is shown, the metal strip (1) is also shown with a schematic representation of the perimeter contour of the support plates (10), this form can be observed the forms of the support plate (10) that are obtained in each stroke of the press.
    [0104]
    [0105] To facilitate the understanding of the procedure, the formation of the first support plate (10) obtained at the exit of the press will be described, although it will be evident to an expert that for each advance step of the metal band (1) and each press stroke the shapes (11, ..., 18) of several support plates (10) are simultaneously defined.
    [0106]
    [0107] The first stage (210) of the upper part of the progressive die (200) has first front punches (211), first lateral punches (212) and a first central punch (213), while the first stage (110) of the lower part of the progressive die (100) has first frontal recesses (111) reciprocally to the first frontal punches (211), first lateral recesses (112) reciprocally to the first lateral punches (212) and a first central hollow (113) reciprocally to the first central punch (213), so that by means of the first punches (211,212,213) and respective holes (111,112,113) defines the perimeter contour of the support plates (10) with the excess material (2).
    [0108]
    [0109] For this purpose, the metal strip (1) is advanced by a first step to arrange it between the first frontal punches (211) and the first frontal recesses (111) and a first press is made so that the lateral front shapes are defined ( 11) of the perimeter contour of one of the support plates (10) and the lateral rear forms (12) of another of the support plates (10). Specifically with the front part of the first front punches (211) the lateral front shapes (11) of the support plate (10) are defined and with the rear part of the first front punches (211) the lateral rear shapes are defined ( 12) of another of the support plates (10).
    [0110]
    [0111] Next, the metallic strip (1) is advanced by a second step so as to arrange it between the first punches (211, 212, 1313) and the first recesses (111, 112, 1313) of the first stage (110, 211) and a second press strike is made, so that in the of the metal band (1) where the front lateral shapes (11) were defined in the first step, the central front shape (13), the lateral rear forms (12) and the front lateral forms (14) are now defined. Specifically with the rear part of the first front punches (211) the rear side shapes (12) are defined, with the front part of the first central punch (213) the central front shape (13) and with the front part of the front ends is defined. first side punches (212) define the front side shapes (14) of the support plate (10).
    [0112]
    [0113] In the same second press stroke, the front side shapes (11) of a new support plate (10) are defined in the metal strip (1).
    [0114]
    [0115] Next, the metal band (1) is advanced by a third step to arrange it between the first lateral punches (212) and central punches (213) and the first lateral (112) and central (113) openings and a third press stroke is made. As in the part of the metal band (1) where the first lateral shapes (11) were defined in the first step and in the second step the lateral rear forms (12), the central front shape (13) and the front side shapes (14), the rear center shape (15), and the rear side shapes (16) of the support plate (10) are now defined. Specifically with the rear part of the first central punch (213) the central rear shape (15) is defined and with the rear part of the first lateral punches (212) the rear side shapes are defined (16) of the support plate (10).
    [0116]
    [0117] In this way, with the first three press strokes, the perimeter contour of a support plate (10) is obtained in the metal strip (1) in which the front lateral shapes (11), the lateral rear shapes (12), and the front face are defined. central (13), front side (14), rear center (15) and rear side (16), all with an excess of material (2) that is partially removed in the third stage (130,230) of the progressive die. In figures 5A to 5C the shapes that are reproduced in the metal strip (1) after the first three press punches are shown schematically respectively.
    [0118]
    [0119] In this first stage the shapes (11, .. 16) defined in the metal band (1) generate pre-cuts (1 ') that allows the material of the band (1) to flow when it is compressed in the second stage (220) .
    [0120]
    [0121] In this first stage (110,210) it is not necessary to define in the metallic band (1) the central lateral shapes (18) of the support plate (10) since the metal band (1) used has a width similar to the width of the support plate (10) taking into account the excess material (2).
    [0122]
    [0123] After the three press strokes of the first stage, the support plate (10) is joined to the metal strip (1) in four points (3). Two of those points (3) correspond to the space that remains between the lateral front shapes (11) and front lateral shapes (14) and the other two points (3) correspond to the space left between the lateral rear shapes ( 12) and the rear lateral forms (16). These four points (3) ensure that the support plate (10) advances with the metal band (1).
    [0124]
    [0125] The first lateral punches (212) have an intermediate part with which a cut of the metal strip (1) is made to define the points (3,4) that maintain the union of the support plates (10) and the metal strip (one).
    [0126]
    [0127] The second stage (220) of the upper part of the progressive die (200) has a second punch (221) with the shape of the upper face of the support plate (10) and the second stage (120) of the lower part of the progressive die (100) has a matrix (121) with the shape of the lower face of the support plate (10), so that by means of both are defined in the metal strip (1) the shape of the upper and lower faces of the support plates (10).
    [0128] Specifically, the second punch (221) is a flat shape in the form of a support plate (10) and the matrix (121) is another flat shape in the form of a support plate (10) but having projections for the crevice formation (17).
    [0129]
    [0130] In this way, the metallic strip (1) is advanced by a fourth step to arrange it between the second punch (221) and the die (121) and a fourth press is made so that the indentations (17) are defined.
    [0131]
    [0132] In figure 5D schematically shows the forms that are reproduced in the metal band (1) after the fourth press stroke.
    [0133]
    [0134] The pre-cuts (1 ') obtained in the first stage (110, 210) allow the material of the support plates (10) to flow towards the sides when compressed by the joint action of the punch (221) and the matrix (121) of the second stage (120, 220).
    [0135]
    [0136] Depending on the type of support plate configuration (10) necessary other shapes can be defined on the upper and lower faces of the support plate (10), as will be described later.
    [0137]
    [0138] The third stage (230) of the upper part of the progressive die (200) has a third central punch (231), a third lateral punches (232) and a third rear punches (233), while the third stage (130) of the lower part of the progressive die (100) has a third central recess (131) reciprocally to the third central punch (231), third lateral recesses (132) reciprocally to the third lateral punches (232) and a third recesses backs (133) reciprocally to the third rear punches (233), so that by means of the third punches (231,232,233) and respective recesses (131,132,133) the excess material (2) is partially removed, defining the oversizing of material (2 ') ) in the perimeter contour of the support plates (10).
    [0139]
    [0140] The third punches (231,232,233) and respective recesses (131,132,133) of the third stage have a similar shape the first punches (211,212,213) and recesses (111,112,113) of the first stage but are slightly larger to be able to partially eliminate the excess material (2). ) and thus define the oversizing of material (2 ') that will be subsequently cut.
    [0141] The third lateral punches (232) and hollow punches (132) have a more elongated shape than the first lateral punches (212) and hollow punches (112) to be able to define the central lateral shapes (18) with the oversizing of material (2 ').
    [0142]
    [0143] To partially remove the excess material (2) and define the oversizing of material (2 ') a metallic band (1) is advanced by a fifth step to arrange it between the third central punch (231) and the third central hole (131) and a fifth press stroke is performed so that excess material (2) is partially removed from the central front shape (13) of the support plate (10). In the same fifth stroke time, the excess material (2) is partially removed from the rear center shape (15) of another support plate (10). Specifically with the front part of the third central punch (231) the excess material (2) of the central front form (13) is partially removed and with the rear part of the third central punch (231) the excess material is partially removed ( 2) of the central rear shape (15).
    [0144]
    [0145] Next, the metallic band (1) is advanced by a sixth step to arrange it between the third punches (231,232,233) and the third recesses (131,132,133) of the third stage (130,230) and a sixth press is made so that it is partially withdrawn. the excess material (2) of the central rear form (15), the lateral front forms (11), and the front lateral forms (14) of the support plate (10). In this press stroke the excess material (2) is also removed from the central lateral forms (18) existing between the front lateral (14) and rear (16) forms. Specifically with the front part of the third frontal punches (233) the excess material (2) is removed from the lateral front shapes (11), with the rear part of the third central punch (231) the excess material is removed (2). ) of the central rear form (15), and with the front part of the third lateral punches (232) the excess material (2) is removed from the front lateral (14) and central lateral (18) forms.
    [0146]
    [0147] Next, the metal band (1) is advanced by a seventh step to arrange it between the third frontal punches (233) and lateral punches (232) and their respective third frontal (133) and lateral (132) holes and a seventh press coup is made to remove the excess material (2) from the rear side shapes (12) and from the rear side shapes (16). Specifically with the back of the third front punches (233) the excess material (2) is removed from the lateral back forms (12) and with the back of the third lateral punches (232) the excess material is removed ( 2) of the lateral shapes rear (16).
    [0148]
    [0149] In this way, with the fifth, sixth and seventh press punches the excess material (2) is partially removed from the entire perimeter contour of the support plate (10) except for the four points (3) that serve to maintain the joining the support plate (10) to the metal strip (1). In figures 5E to 5G the shapes that are reproduced in the metal strip (1) after the fifth, sixth and seventh press blows are shown schematically respectively.
    [0150]
    [0151] The fourth stage (240) of the upper part of the progressive die (200) has a fourth punch (241) with the shape of the upper face of the support plate (10) and the fourth stage (140) of the lower part of the progressive die (100) has a fourth recess (141) reciprocally to the fourth punch (241), so that by means of both the support plate (10) is separated from the metal strip (1) while cutting the oversizing of material (2 ') of the perimeter contour of the support plates (10).
    [0152]
    [0153] In figure 6 there is shown a sectional view of the fourth stage (240) of the lower part of the progressive die (100). The fourth recess (141) has in all its lateral contour a cutting edge (1410) which is configured to cut the oversizing of material (2 ') of the perimetric contour of the support plates (10).
    [0154]
    [0155] Accordingly, the metallic band (1) is advanced one eighth step to arrange it between the fourth punch (241) and the fourth recess (141) and an eighth press is made so that the support plate is separated (10) of the metal band (1) at the same time as the oversizing of material (2 ') of the perimeter contour of the support plate (10) is cut.
    [0156]
    [0157] In figure 5H it is shown schematically how after the eighth stroke the remaining metal strip (1) has the shape of the perimeter contour of the support plate that corresponds to oversize material (2 ') that has finally been cut.
    [0158]
    [0159] As seen in the enlarged view of Figure 7, the cutting edge (1410) is oriented towards the outside of the fourth hollow (141) to receive the support plate (10) that is pushed by the four punch (241).
    [0160] The cutting edge (1410) is disposed at the upper end of an inner wall (1411) of said fourth gap (141). At that upper end of the inner wall (1411) and in continuity with the cutting edge (1410) there is a grooved edge (1412) which facilitates the oversizing of material (2 ') to the outside when it is cut by the cutting edge. (1410).
    [0161]
    [0162] The inner wall (1411) has an inclination towards the inside so that the fourth hollow (141) progressively widens from the outside to the inside, thus ensuring that the support plate (10) does not rub against the interior wall ( 1411) when the punch (241) forces its entry into the recess (141).
    [0163]
    [0164] The cutting edge (1410) has a coating of a material with very low adhesion and optimum polishing. Preferably a coating of titanium nitride applied by PVD technology.
    [0165]
    [0166] According to all this, after the first eight press strokes, the first support plate (10) is obtained and for each subsequent press stroke a new support plate (10) is obtained at the outlet of the press.
    [0167]
    [0168] As indicated above, depending on the type of support plate configuration (10) necessary, different shapes can be defined on the upper and lower faces of the support plate (10). For example, on the upper face of the support plate can be defined chamfered head projections that are commonly used in the manufacture of brake pads to improve the connection of the friction lining to the support plate. For this, in the fourth press stroke, truncated conical protrusions are defined on the upper face of the support plate. On the fifth press stroke, a punching is made in the center of the head of each of these projections and in the sixth stroke. Pressing the head of the projections is chamfered, said chamfering being favored by the previously made punching.
    [0169]
    [0170] The invention has been described for a progressive four-stage die where by means of eight press strokes the support plates (10) are obtained, although in its simplest configuration the invention could be applicable to a progressive die only of two stages in where the support plates (10) are obtained by only two press strokes. So in the first stage through a first press hit would be defined partially the perimetric contour of the support plates (10) with the oversizing of material (2 '), and in the second blow the support plates (10) of the metal strip (1) would be separated while cutting the Oversize material (2 ').
    权利要求:
    Claims (15)
    [1]
    1. - Procedure for manufacturing support plates (10) for brake pads, comprising:
    • use a press (100,200) for stamping the support plates (10), and
    • supply one band (1) sequentially in steps in the press (100,200) and for each advance step of the band (1) perform at least one operation by stamping in the band (1) by a press stroke, such that after several press strokes are obtained in the band (1) the shape of several support plates (10),
    characterized by that
    - by means of at least one of the stamping operations, the peripheral contour of each of the support plates (10) with an oversize of material (2 ') is partially defined in the band (1), and
    - each support plate (10) is separated from the band (1) by a press stroke where the oversizing of material (2 ') is cut off.
    [2]
    2. - Method of manufacturing support plates (10) for brake pads, according to the preceding claim, characterized in that the oversizing of material (2 ') has a thickness of at least 0.5 mm.
    [3]
    3. - Method of manufacturing support plates (10) for brake pads, according to any one of the preceding claims, characterized in that the perimeter contour with the oversizing of material (2 ') is obtained with a single press stroke.
    [4]
    4. - Method of manufacturing support plates (10) for brake pads, according to claims 1 or 2, characterized in that by means of at least one of the operations by stamping is defined partially in the band (1) the perimeter contour of each of the support plates (10) with an excess of material (2), and subsequently the excess material (2) is partially removed, defining the perimeter contour of each of the support plates (10) with the material oversizing (2 ").
    [5]
    5. - Method of manufacturing support plates (10) for brake pads, according to the preceding claim, characterized in that the perimeter contour with the excess material (2) is obtained with three press strokes and the perimeter contour with the Oversize material (2 ') is obtained with three other press strokes.
    [6]
    6. - Method of manufacturing support plates (10) for brake pads, according to the preceding claim, characterized in that to define the perimeter contour of the support plate (10) with the excess material (2) is advanced a first step of the band (1) and a first press strike is made with which lateral front shapes (11) of the perimeter contour of the support plate (10) are defined, then the second band is advanced ( 1) and a second press stroke is performed with which a central front shape (13), lateral rear shapes (12) and front lateral shapes (14) of the support plate (10) are defined, and subsequently the band (1) advances a third step and a third press is made with which a central rear shape (15) and rear lateral forms (16) are defined, defining all the forms (11,12,13 , 14,15,16) with the excess of material (2).
    [7]
    7. - Method of manufacturing support plates (10) for brake pads, according to claim 5 or 6, characterized in that after defining the perimeter contour of the support plate (10) with the excess material (2) is the band (1) advances a fourth step and a fourth press stroke is performed with which shapes (17) are defined on the upper and / or lower face of the support plate (10).
    [8]
    8. - Method of manufacturing support plates (10) for brake pads, according to any one of claims 5 to 7, characterized in that to partially remove the excess material (2) defining the oversizing of material (2 ') the band (1) is advanced one fifth step and a fifth press is made with which the excess material (2) is partially removed from the central front shape (13), then the sixth band is advanced (1) and a sixth press stroke is performed with which the excess material (2) of the central rear form (15), of the lateral front forms (11), of the front lateral forms (14) is partially removed. , and of central lateral forms (18) existing between the front lateral forms (14) and rear (16) and then a seventh step is carried forward the band (1) and a seventh stroke is made of press with which the excess material (2) of the lateral rear forms (12) and the rear lateral forms (16) is partially removed.
    [9]
    9. - Method of manufacturing support plates (10) for brake pads, according to any one of the preceding claims, characterized in that in the separation of the support plate (10) of the band (1) a punch is used (241) that pushes the band (1) by inserting it in a recess (141) reciprocally to the punch (241), and where the recess (141) has a cutting edge (1410) that separates the support plate (10) of the band (1) at the same time as it cuts the oversizing of material (2 ') of the perimeter contour of the support plate (10).
    [10]
    10. - Method of manufacturing support plates (10) for brake pads, according to the preceding claim, characterized in that the cutting edge (1410) has a coating of titanium nitride.
    [11]
    11. - Method of manufacturing support plates (10) for brake pads, according to any of claims 9 or 10, characterized in that the cutting edge (1410) has a grooved edge (1412) to facilitate the oversizing output of material (2 ").
    [12]
    12. - Method of manufacturing support plates (10) for brake pads, according to any one of claims 9 to 11, characterized in that the recess (141) has an interior wall (1411) that progressively widens from the outside towards the inside, so that the support plate (10) does not rub against the inner wall (1411) when the punch (241) introduces the band (1) into the recess (141).
    [13]
    13. - Method of manufacturing support plates (10) for brake pads, according to any one of the preceding claims, characterized in that after defining the perimeter contour of the support plate (10) with oversizing material (2) the support plate (10) is attached to the metal band (1) at four points (3).
    [14]
    14. - Method of manufacturing support plates (10) for brake pads, according to any one of claims 4 to 13, characterized in that the band (1) has a width less than or equal to the width of the support plates plus the excess material (2) of the perimeter contour of the support plates (10).
    [15]
    15. Brake pad having a support plate (10) manufactured according to the method of any one of the preceding claims.
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    同族专利:
    公开号 | 公开日
    ES2714933B2|2020-05-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1602851A1|2004-06-03|2005-12-07|TRW KFZ-Ausrüstung GmbH|Method and product for manufacturing brake pads|
    US20070170023A1|2006-01-26|2007-07-26|Katsuhiro Yamamoto|Disc brake pad, back plate for pad and method of manufacturing back plate for pad|
    CN103506493A|2013-10-11|2014-01-15|广东骏汇汽车科技股份有限公司|Steel back pressed bevel edge fine trimming continuous mold and steel back production method|
    法律状态:
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    2020-03-25| PC2A| Transfer of patent|Owner name: ZF AFTERMARKET IBERICA, S.L.U. Effective date: 20200319 |
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    申请号 | 申请日 | 专利标题
    ES201731373A|ES2714933B2|2017-11-30|2017-11-30|MANUFACTURING PROCEDURE OF SUPPORT PLATES FOR BRAKE PADS AND BRAKE PAD OBTAINED|ES201731373A| ES2714933B2|2017-11-30|2017-11-30|MANUFACTURING PROCEDURE OF SUPPORT PLATES FOR BRAKE PADS AND BRAKE PAD OBTAINED|
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