Hydraulic block and method for machining and producing a hydraulic block

Abstract

On a hydraulic block (10) for a hydraulic unit (14), in particular of a vehicle brake system, which is designed as a block-shaped housing (22) having six sides (24, 26, 36, 40, 42, 46), wherein a height (48) extending along a Z axis (50) lies between a first side (24) and an opposite second side (26), a length (52) extending along an associated X axis (54) lies between a third side (36) and an opposite fourth side (40), and a thickness (56) extending along an associated Y axis (58) lies between a fifth side (42) and an opposite sixth side (46), a detection (46) is arranged on the sixth side (46).

Description

[0001] Description

[0002] title

[0003] Hydraulic block and methods for machining and manufacturing the hydraulic block

[0004] State of the art

[0005] The invention relates to a hydraulic block for a hydraulic unit, in particular of a vehicle braking system, according to the preamble of claim 1. Furthermore, the invention relates to a method for machining and manufacturing such a hydraulic block.

[0006] In conventional hydraulic power units for vehicle braking systems, hydraulic blocks serve as housings in and to which the associated hydraulic components are mechanically mounted and hydraulically interconnected. One such hydraulic component is an externally driven cylinder, a piston-cylinder unit powered by an electric motor, which acts as a pressure generator during normal operation of the vehicle braking system. The housing also contains additional receptacles or openings for other hydraulic components, such as valves, sensors, simulators, and a master cylinder. These components are connected and interconnected via lines within the housing.

[0007] Depending on the vehicle type and size, as well as the available installation space, various vehicle braking systems with associated hydraulic components, some of which may differ or vary in size, are required. These components are housed in a hydraulic block, depending on the vehicle braking system's performance, operating mode, function, and installation position within the vehicle. This creates a hydraulic power unit, which also includes a control unit attached to the housing that regulates the components, and a motor for generating pressure. Furthermore, due to the multitude of diverse vehicle systems with varying sizes, performance levels, and operating modes—whether mechanical, hydraulic, electro-hydraulic, driver-operated, semi-autonomous, or fully autonomous—adaptations to the hydraulic power unit are necessary.All adaptation requirements should be variable and as cost-effective as possible in terms of manufacturing technology, in order to be able to offer attractive prices despite the diversity of the market.

[0008] Disclosure of the invention

[0009] According to the invention, a hydraulic block for a hydraulic unit, particularly for a vehicle braking system, is provided, which is designed as a block-shaped housing with six sides, wherein a height extending along a Z-axis lies between a first side and an opposite second side, a length extending along a corresponding X-axis lies between a third side and an opposite fourth side, and a thickness extending along a corresponding Y-axis lies between a fifth side and an opposite sixth side. A detection element is arranged on the sixth side.

[0010] The recognition element has a specific external shape, which differs in particular from a plane of the sixth side. Thus, the recognition element is a physical or morphological feature that serves to identify the sixth side of the hydraulic block for further machining and assembly processes on the housing. This ensures correct positioning, for example, in a clamping device. A preferably cuboid-shaped hydraulic block can therefore always be inserted into its corresponding clamping recess in the correct position. Preferably, for a specific orientation of other sides, the recognition feature is arranged asymmetrically with respect to a central axis that bisects the height between the first and second sides. In particular, the sixth side is a control unit side, which serves to mount a control unit belonging to the hydraulic power unit and is preferably designed as a broad side.The detection element thus serves to identify the control unit side in which, in particular, at least one valve receptacle is to be or is located. Specifically, the detection element is designed to project from and / or into the sixth side.

[0011] According to the invention, the detection element is advantageously integrally formed on the sixth side and preferably formed from the material of the hydraulic block itself and / or molded into it. This makes the detection element particularly stable and compact on the hydraulic block. The detection element preferably protrudes from the sixth side, making it particularly easy to see.

[0012] In particular, the identifying element is rib-shaped, thus representing a so-called Poka-Yoke rib. Preferably, this rib shape extends parallel to the length. The rib most preferably extends over the entire length from the third to the fourth side, which preferably represent two narrow sides. Specifically, the third side serves as the mounting side for attaching the hydraulic block to a vehicle wall of an associated vehicle. The fourth side is then a front face, located at the front in the direction of travel when mounted. The rib is preferably formed in an extrusion process preceding a machining process, in which aluminum is preferably extruded into a rod shape through a forming opening. The opening has a shape opposite to that of the rib.From such an extruded profile, the individual hydraulic block is then separated as a blank by means of a separation process, and this blank already incorporates its identification element. This saves manufacturing steps and costs.

[0013] Furthermore, according to the invention, the detection element is advantageously positioned in the same way relative to the second side across at least two types of hydraulic blocks, wherein the at least two types of hydraulic blocks differ with respect to their installation position in a given installed state and / or their performance and / or their function. In particular, the hydraulic block types differing in their performance, or their associated hydraulic power unit types, have different housing thicknesses, and the hydraulic block types differing in their function, or their associated hydraulic power unit types, have different housing heights. The height extends between the first and second sides, such that the detection element, in its position relative to the second side (a specific side of the two sides defining the height), has the same vertical distance across at least two types of hydraulic blocks.This allows each hydraulic block to be correctly positioned in its corresponding carrier for a further processing process, regardless of the hydraulic block type.

[0014] In other words, the invention advantageously relates to a series of hydraulic blocks with at least two types of hydraulic blocks, each for a specific type of hydraulic power unit, wherein each hydraulic block type has a recognition element on its sixth side, which is advantageously positioned the same in relation to the second side of its housing in every hydraulic block type. A modular system is thus created with which various types of hydraulic blocks can be manufactured functionally and cost-effectively, differing in their installation position and / or performance and / or function.

[0015] Different installation positions are achieved in each installed state, particularly depending on the position and orientation of the hydraulic block type and thus the associated hydraulic power unit type within the available installation space of the corresponding vehicle. A standard installation position is achieved with the motor located on the left side of the housing in the direction of travel, while an inverted installation position is achieved by rotating the motor 180° around the X-axis of the housing, in which case it is located on the right side of the housing in the direction of travel. The X-axis corresponds to the axis of a master cylinder preferably located within the housing.

[0016] The performance in question relates in particular to the different braking performance achievable with different volumes of pressure medium or brake fluid in the vehicle's braking system. Crucially, this involves different volumes in a positive-pressure cylinder located in an external-pressure cylinder housing and, where applicable, in a master brake cylinder located in a master brake cylinder housing.

[0017] A hydraulic block type in a single-box brake system and a hydraulic block type in a two-box system have a particularly different function. In a two-box system, or a so-called Decoupled Power Brake (DPB), two separate spatial units are provided. A first unit, as the actuation unit, comprises elements for generating brake pressure, and a second unit, as the modulation unit, comprises elements for modulating the generated brake pressure. In particular, the actuation unit with its housing is a hydraulic block type of the hydraulic block series according to the invention. In a single-box system, or an Integrated Power Brake (IPB), hydraulic components of an actuation and modulation area are housed in a single housing, which in particular represents another hydraulic block type of the hydraulic block series according to the invention.This type of hydraulic block preferably has a greater height than the type of hydraulic block used to implement the actuation unit of the DPB system.

[0018] Furthermore, according to the invention, an information element is advantageously arranged on one of the six sides, preferably positioned on the fifth side opposite the sixth side and thus opposite the side belonging to the recognition element. In particular, the information element is positioned the same in relation to the second side across the at least two hydraulic block types, which further facilitates modular manufacturing. The fifth side on which the information element is arranged is, in particular, a motor side, which serves for mounting a motor, preferably an externally driven cylinder, and is therefore preferably designed as a broad side. The information element on the fifth side is preferably oriented away from the third side along its length and is particularly preferably positioned there at the same height as a master cylinder mount with respect to the Z-axis.This places the information element near the fourth side, which, when installed, is the front side facing the vehicle wall and is easily accessible in the engine compartment. Consequently, the information element can always be easily read, even when installed.

[0019] The information element is preferably designed with a code in which specific characteristics of the hydraulic block, particularly as a blank, are already stored. These characteristics can be read out during the subsequent processing for specifically required manufacturing steps. Furthermore, specific characteristics of the associated hydraulic unit or the vehicle braking system are preferably stored there for traceability, such as a spring characteristic curve, a master cylinder stroke, and process parameters. Preferably, the code is designed to be particularly space-saving as a DMC code or Data Matrix code.

[0020] Furthermore, according to the invention, at least one index point is advantageously arranged on the fifth side, which is positioned identically across the at least two hydraulic block types, particularly in relation to the second side, and has the same vertical distance to the second side in each case. Preferably, the at least one index point is defined as a contact point at which each hydraulic block type is to be placed during its manufacturing process, particularly against a clamping device. Such a contact point is to be used in the state of the hydraulic block as a blank, particularly in a machining process, in a first and a subsequent second clamping position. Thus, each contact point serves as a counter-bearing point on the motor side, which is preferably designed as a broad side, and therefore as a stop point with respect to the Y-axis. The at least one index point is constant as the contact point for all clamping operations or clamping positions.This saves costs by eliminating work steps in the associated manufacturing process. A clamping operation is a temporary fastening of the hydraulic block with clamping devices for and during machining. For this purpose, a clamping device, such as a clamping jaw, is pressed against the hydraulic block, whereby the clamping device presses the hydraulic block against another clamping device or abutment.

[0021] Preferably three such index points and particularly preferably four such index points are provided, each of which is arranged close to a corner of the fifth side and is positioned the same relative to each other in all hydraulic block types.

[0022] Advantageously, at least one additional index point is provided as an alignment receptacle or index bore, which is formed into the fifth side during the first clamping position, particularly by machining, in a blind-hole manner. The hydraulic block is to be aligned at the alignment receptacle in the second clamping position. For further machining of the hydraulic block, a positioning element belonging to each individual alignment receptacle is preferably provided on a clamping device or clamping block, with which the hydraulic block is to be positioned in conjunction with the alignment receptacle. The positioning element is a pin that engages in the receptacle. Furthermore, for precise positioning, two alignment receptacles are preferably provided, which are preferably arranged as far apart as possible, diagonally to each other, near each corner of the fifth side.This ensures particularly uniform support on the clamping device during machining. Furthermore, at least one alignment mount is preferably also used during subsequent assembly. Specifically, in the case of a hydraulic block housing for an inverted installation position, two additional alignment mounts are provided. These are mirrored to the two aforementioned alignment mounts during the second clamping position, with the same hole pattern and the same distance relative to the central axis. These additional alignment mounts are used during assembly in the same workpiece carrier as during the assembly of a regular housing for a standard installation position. In particular, all alignment mounts are positioned identically relative to the second side across at least two hydraulic block types. This further modularizes manufacturing and assembly processes, making them more cost-effective.

[0023] Advantageously, according to the invention, a first stop point is arranged on the first side, which serves as a stop point with respect to the Z-axis in a first clamping position during a machining process. Two second stop points are arranged on the third or fourth side, which serve as stop points with respect to the X-axis in the first clamping position during the machining process. In particular, the two second stop points are positioned identically with respect to the second side and, more specifically, with respect to the at least one index point across the at least two hydraulic block types. Furthermore, preferably, the first and second stop points are equidistant from the fifth side across the at least two hydraulic block types, even if the thickness and / or height of the fifth side varies as required. If the height varies, the first stop point has a different vertical distance to the second side depending on its height.This means that the first stop point in the Z-direction is variable, which is preferably compensated for in the first clamping position by means of a stop element adapted in length.

[0024] Preferably, the first side has already been shaped very precisely and evenly in a previous extrusion process. The extruded profile is preferably formed at the same initial stop point. Thus, the first side serves as a first reference surface with a precise shape, requiring no further milling. In the standard housing, it preferably serves as the reservoir surface for attaching a pressure medium reservoir. The third side serves as a second reference surface, formed as the parting line after the extrusion process. After this parting line, it is preferably partially machined to remove surface irregularities. An adapter is typically attached to the third side for mounting the hydraulic block to the vehicle wall.

[0025] With the first stop point acting as a stop relative to the Z-axis, the two second stop points acting as stops relative to the X-axis, and at least one index point serving as a contact point acting as a stop relative to the Y-axis, the hydraulic block's position within its clamping cavity is clearly defined for a machining process. Such a stop concept is particularly advantageous in machining processes in a first clamping position, where the fifth side is freely accessible except for the index points serving as contact points. This allows necessary fixtures, such as at least one alignment fixture, an external force cylinder fixture, and various connection fixtures, to be machined, milled, or drilled into the fifth side (the motor side). Thanks to the contact points and the freely accessible fifth side, surface irregularities on the fifth side do not interfere with the required precise positioning.This eliminates the need for cost-effective reworking or milling of the fifth side.

[0026] Furthermore, according to the invention, it is advantageous to provide at least one first clamping pocket on the third side and at least one second clamping pocket on the opposite fourth side. In particular, the at least one first clamping pocket and the at least one second clamping pocket are positioned identically relative to the second side and preferably relative to the fifth side across the at least two hydraulic block types. The at least one first and second clamping pockets are formed in the machining process in the first clamping position and serve to clamp the hydraulic block in the second clamping position.An identical position relative to the second side also means, in particular, that the recognition element and / or the information element and / or the at least one index point and / or the two second anchor points and / or the at least one first clamping pocket and / or the at least one second clamping pocket each have the same vertical distance to the second side, and, especially if the height varies depending on the hydraulic block type, that the vertical distance to the first side also varies depending on the hydraulic block type. In particular, the length is the same in all hydraulic block types.

[0027] Furthermore, an identical position relative to the fifth side means that the first anchor point and / or the two second anchor points and / or the at least one first clamping pocket and / or the at least one second clamping pocket are positioned identically in relation to the fifth side across the at least two hydraulic block types, and, in particular, that they maintain the same distance to the fifth side even if the housing thickness varies depending on the hydraulic block type. Variations in housing thickness are accommodated by different distances between the anchor points and clamping pockets and the opposite sixth side.

[0028] Advantageously, the hydraulic block features an external power cylinder receptacle on its fifth side, projecting into that side with its longitudinal axis, and at least one connection receptacle, which are installed there in the first clamping position. The external power cylinder receptacle and the at least one connection receptacle are positioned identically relative to each other across at least two hydraulic block types, and the external power cylinder receptacle is positioned identically relative to the second side in all hydraulic block types. Particularly when the housing height varies depending on the hydraulic block type, the longitudinal axis of the external power cylinder receptacle maintains a constant vertical distance from the second side.

[0029] Furthermore, it is advantageously provided on the third side that a master cylinder receptacle is provided, projecting into the third side with its longitudinal axis and extending parallel to the fifth side, and whose longitudinal axis is positioned the same in relation to the fifth side and, in particular, to the second side across the at least two hydraulic block types. Specifically, the master cylinder receptacle's longitudinal axis maintains the same distance to the fifth side regardless of the housing thickness (which varies depending on the hydraulic block type) and the same distance to the second side regardless of the housing height (which varies depending on the hydraulic block type).

[0030] Furthermore, in each hydraulic block type, the recognition element, in particular the information element, in particular the at least one index point as a contact point or alignment point, in particular the first stop point and the two second stop points, in particular the at least one first and second clamping pocket in their position relative to the external force cylinder mounting and advantageously in their position relative to the main cylinder mounting on the respective housing are the same.

[0031] A hydraulic block designed in this way and such different types of hydraulic blocks can be manufactured in the aforementioned series using a special process, which is based on a special clamping and holding concept for machining in a machining process and for subsequent assembly to the respective associated hydraulic unit.

[0032] The invention is thus also directed to a method for machining and manufacturing, in particular for clamping and machining such a hydraulic block, as well as for assembling the machined hydraulic block to manufacture a hydraulic unit, in particular a vehicle brake system, comprising the steps of: providing a hydraulic block as a blank with a recognition element on a sixth side, placing the provided hydraulic block in a first clamping position in an abutment, wherein at least three contact points are provided as index points on a fifth side opposite the sixth side, at which the hydraulic block is placed against the abutment and the fifth side is otherwise freely accessible for machining by a tool.Aligning the inserted hydraulic block with respect to the Z-axis at a first stop point on a first side and with respect to the X-axis at two second stop points on a third side or an opposite fourth side, whereby the third and / or fourth side are otherwise freely accessible for machining by a tool, and pressing a clamping device against the sixth side in conjunction with the detection element. This ensures that the hydraulic block is inserted correctly into the abutment. The abutment and the clamping device together form a first clamping device for the first clamping position, in which, depending on the machining requirements, an associated clamping beam is rotated around the Z-axis of the hydraulic block.

[0033] According to the invention, to facilitate the interaction of the clamping device with the recognition element, a counter-form is provided on one of the sixth sides of the clamping device's bearing surface, into which the recognition element is inserted. The recognition element engages with the counter-form and / or the counter-form engages with the recognition element.

[0034] Furthermore, according to the invention, an insert element is advantageously provided for a hydraulic block type with a smaller thickness, which has a counter-form that interacts with the recognition element. The insert element is placed between the contact surface of the clamping device and the hydraulic block on its sixth side. This allows hydraulic block types of different thicknesses to be inserted and held cost-effectively in a single clamping device.

[0035] Advantageously, according to the invention, after pressing the clamping device against the sixth side, machining of the fifth side is carried out, in particular by forming at least one connection receptacle, one external force cylinder receptacle, and at least one alignment receptacle. Preferably, the fifth side is not further milled and thus otherwise remains unmachined. Furthermore, machining of the third side is carried out by forming at least one first clamping pocket, and machining of the fourth side by forming at least one second clamping pocket. The clamping beam is preferably rotated about the Z-axis during this process.

[0036] Furthermore, in the inventive method, the hydraulic block machined in the first clamping position is advantageously pressed against a clamping block with its fifth side in a second clamping position by means of a clamping finger engaging in at least one first clamping pocket and at least one second clamping pocket. This leaves the sixth side freely accessible for machining.

[0037] Advantageously, according to the invention, the fifth side is pressed against the clamping block at at least one contact point, which also served as a contact point in relation to the Y-axis in the first clamping position. Preferably, there are at least three such contact points. In particular, in the second clamping position, at least one alignment receptacle formed in the first clamping position with a pin engaging therein is used to align the hydraulic block.

[0038] Advantageously, according to the invention, in the second clamping position, machining of the sixth side is carried out, particularly with the formation of at least one valve receptacle. Depending on the hydraulic block type, machining of either the first side or the second side with the formation of at least one reservoir receptacle is performed. In the case of a standard hydraulic block type, the first side is machined, and in the case of an inverted hydraulic block type, the second side is machined with the formation of at least one reservoir receptacle. Preferably, in the inverted case, a portion of the second side is milled, and the individual reservoir receptacle is integrated into the milled portion. In both cases, the same workpiece carrier, designed with the clamping block and the clamping fingers, is preferably used.In addition, a detection pin protruding from the clamping block preferably engages in the external force cylinder receptacle of the housing formed in the first clamping position.

[0039] In the inventive method, it is also advantageous that, when mounting at least one reservoir to the hydraulic block machined in the second clamping position, the same at least one alignment receptacle on the fifth side is used for fastening to a mounting block as is also used in the second clamping position. In particular, the at least one alignment receptacle is used in all hydraulic block types, both for a regular or inverted housing and for housings with different thicknesses and / or heights.

[0040] Exemplary embodiments of the solution according to the invention are explained in more detail below with reference to the accompanying schematic drawings. Figure 1 shows an oblique view of a first exemplary embodiment of a hydraulic block according to the invention.

[0041] Fig. 2 shows a comparative view of one mounting side of different hydraulic block types, which form the basis of the exemplary embodiment.

[0042] Fig. 3 shows a comparative view of one side of the engine of two different hydraulic block types according to Fig. 2.

[0043] Fig. 4 shows a comparative view of one motor side of two other different hydraulic block types according to Fig. 2.

[0044] Fig. 5 shows a top view of part of a first clamping device for machining the embodiment,

[0045] Fig. 6 shows a side view of the first clamping device with a second embodiment inserted in a first clamping position; Fig. 7 shows a view of the motor side, the mounting side and a front side after machining the first embodiment in the first clamping position.

[0046] Fig. 8 shows a top view of a second clamping device for further machining of the two embodiments.

[0047] Fig. 9 shows the view according to Fig. 8 with the embodiment inserted in a second clamping position,

[0048] Fig. 10 shows view X according to Fig. 9,

[0049] Fig. 11 shows a side view of an assembly device with a first hydraulic block type and

[0050] Fig. 12 shows the view according to Fig. 11 with a second hydraulic block type.

[0051] Fig. 1 shows a hydraulic block 10 as a blank 12 for a hydraulic unit 14 (Figs. 11, 12) of an externally powered vehicle braking system (not shown). The hydraulic block 10 is preferably formed from an extruded aluminum block. For this purpose, a rod-shaped extrusion profile is produced in an extrusion process along an extrusion direction 16, from which the hydraulic block 10 is separated, forming two opposing saw surfaces or parting surfaces 18, 20. This creates a block-shaped housing 22, in which the two parting surfaces 18, 20 form two narrow sides. Between the two narrow sides are four extrusion surfaces, which are two further narrow sides and two wide sides. One of these narrow sides is designated as the first side 24 and its opposite side as the second side 26. The hydraulic block 10 is positioned against the first side 24 during the extrusion process.Thus, the first side 24 is extruded very uniformly and with high precision in its plane. On the second side 26, the hydraulic block 10 has a certain degree of freedom of movement during the extrusion process to avoid stresses. Therefore, the second side 26 has greater tolerances after extrusion than the first side 24.

[0052] Depending on the hydraulic block type 28 or 30, the tolerances of the second side 26 are either retained or removed in a machining process. In a first, or regular, hydraulic block type 28, the first, precisely extruded side 24 serves as the reservoir side 32. The reservoir side 32 is used to create a reservoir 34 in which brake fluid or pressure medium is stored for compensating purposes. For the attachment of the reservoir 34 with its required seal, a high degree of precision is necessary on the reservoir side 32, which is provided by the first side 24 (Fig. 11). Therefore, the opposing second side 26 does not need to be machined across its entire surface; the tolerances are retained, and this machining step is eliminated.

[0053] In contrast, in a second, or inverse, hydraulic block type 30, the second side 26 serves as the reservoir side 32. The tolerances present there are eliminated by means of partial surface machining. This reworked section of the second side 26 thus serves to accommodate the reservoir 34 (Fig. 12). Hydraulic block types 28 and 30 differ in their installation position and, in particular, belong to a hydraulic block series, specifically series 35, along with other hydraulic block types.

[0054] Furthermore, one of the two separating surfaces 18, 20 is designated as the third side 36, which serves as the mounting side for attachment to a vehicle wall (not shown) using a mounting adapter 38 (Figs. 11, 12). The separating surface 20 opposite the third side 36 is designated as the fourth side 40, which, when mounted in the vehicle, is located at the front in the direction of travel. Additionally, the broad side shown at the top of Fig. 1 is a fifth side 42, which serves as the motor side for mounting a motor 44 (Figs. 11, 12). Its opposite side is a sixth side 46, to which a control unit (not shown) is to be attached. Between the first side 24 and the second side 26, a height 48 of the housing 22 or hydraulic block 10 extends, which is oriented along a Z-axis 50 of a fictitious Cartesian coordinate system.A length 52 of the casing 22 lies between the third side 36 and the fourth side 40 and extends along an associated X-axis 54. A thickness 56 extends between the fifth side 42 and the sixth side 46 along an associated Y-axis 58.

[0055] A rib-shaped recognition element 60 is formed on the sixth side 46, extending along the X-axis 54, or longitudinal extent of the housing 22. The recognition element 60 is designed as a rib extending from the third side 36 to the fourth side 40 over its entire length 52 and projecting from the sixth side 46. Along its longitudinal axis, the rib, or recognition element 60, has a distance or height 62 to the second side 26 and a different height 64 to the first side 24. Thus, the recognition element 60 is arranged asymmetrically with respect to a central axis 66 that bisects the height 48 between the first and second sides 24 and 26. Thus, the recognition element 60 serves not only to identify the sixth page 46 as a control unit page in contrast to the fifth page 42, but also to assign and differentiate the further pages 24, 26, 36 and 40 of the blank 12.

[0056] Furthermore, the identification element 60 is positioned identically relative to the second side 26 in each of the at least two hydraulic block types 28, 30 of the series 35. This means that the rib on the sixth side 46 has the same vertical distance 62 to the second side 26 with its longitudinal axis. Even in hydraulic block types of the same series 35, which differ particularly in their function and thus in their height 48, the vertical distance 62 is always the same, while the vertical distance 64 varies accordingly (see also Figs. 2, 3 and 4). In addition, other hydraulic block types of the same series 35, which differ particularly in their performance, have different thicknesses 56 (see Fig. 2). In these cases, the identification element 60 is always on the sixth side 46 and always positioned identically relative to the second side 26.Furthermore, on blank 12, on the fifth side 42, facing away from the third side 36 with respect to length 52 and thus close to the fourth side 40, an information element 68, designed as a DMC code, is arranged. By means of the information element 68, specific characteristics of the hydraulic block 10 and / or the associated hydraulic unit 14 are already stored on the hydraulic block 10 in the blank 12 state. The information element 68 has a height distance 70 to the second side 26, which differs from its height distance 72 to the first side 24. Moreover, the height distance 70 is always the same in relation to the second side 26 in the at least two hydraulic block types 28, 30 and in other hydraulic block types that differ in their height 48 and / or thickness 56. This results in a correspondingly different height distance 72 to the first side 24.

[0057] In Fig. 1, three stop points 74, 76, and 78 are schematically indicated by dashed triangles in relation to their position on sides 24 and 36, as well as their position relative to length 52 and height 48. These three stop points 74, 76, and 78 are shown in more detail on the hydraulic block 10 in Fig. 2. A first stop point 74 is provided on the first side 24, located approximately midway along the length 52 of the housing 22 (side 24) and close to the fifth side 42 (motor side). During the extrusion process, the first stop point 74 already serves as a stop by means of the applied first side 24. Furthermore, the first stop point 74 also serves as a stop in the subsequent machining process in the direction of the Z-axis 50.Additionally, for the machining process, two second stop points 76, 78 are provided on the third side 36, which serves as the mounting side. These are arranged in a line along the height 48 and offset from the first stop point 74, close to the sixth side 46 or control unit side (visible in Fig. 2). A second stop point 76 on the third side 36 has a vertical distance 80 to the second side 26, which is always the same in every hydraulic block type of the 35 series, even for hydraulic block types that differ in their height 48 (see Fig. 2). Another second stop point 78 is arranged either very close to or at a greater distance from the first side 24, depending on the height 48, and has a constant vertical distance 82 to the second side 26 within the 35 series (see also Fig. 2). Thus, the two second stop points 76, 78 serve as stops in the direction of the X-axis 54.Figure 2 shows the two second mounting points 76, 78 in a comparative view of the third side 36 or mounting side of eight different hydraulic block types 28, 30, 84, 86, 88, 90, 92, 94 of the 35 series. It can be seen that the two second mounting points 76, 78 in all hydraulic block types 28, 30, 84, 86, 88, 90, 92, 94, in addition to the same height distance 80 and 82, have the same distance 96 to the fifth side 42 or motor side and, depending on the thickness 56, are spaced differently to the sixth side 46 or control valve side.

[0058] The hydraulic block type 84, shown with dashed lines, has a greater thickness 56 than hydraulic block type 28, while otherwise having a largely identical design. Accordingly, the external force cylinder receptacle 98, extending from the fifth side 42 to the sixth side 46 and passing through the housing 22, is longer than in hydraulic block type 28. Thus, with the same cross-sectional diameter of the external force cylinder receptacle 98, hydraulic block type 84 has a larger volume of pressure chamber formed by the external force cylinder receptacle 98. A corresponding external force cylinder therefore has a greater power output for pressure generation. The same applies to hydraulic block types 86, 92, and 94, each shown with dashed lines, which have a greater thickness 56 compared to hydraulic block types 30, 88, and 90, respectively.

[0059] The external force cylinder mount 98, with its longitudinal axis 100, has a constant vertical distance 102 to the second side 26 in all hydraulic block types 28, 30, 84, 86, 88, 90, 92, and 94. A main cylinder mount 104, projecting into the third side 36, is also provided, its longitudinal axis 106 running perpendicular to the third side 36 in the direction of the fourth side 40. The longitudinal axis 106 also has a constant vertical distance 108 to the second side 26 and a constant distance 110 to the fifth side 42 in all hydraulic block types 28, 30, 84, 86, 88, 90, 92, and 94. Different heights 48 are achieved by correspondingly different distances of the longitudinal axes 100 and 106 to the first side 24.

[0060] Furthermore, on the third side 36, two first clamping pockets 112 project into the hydraulic block 10, and on the opposite fourth side 40, two second clamping pockets 114 project into the hydraulic block 10 (visible in Fig. 7). The two first clamping pockets 112 and the two second clamping pockets 114 are each arranged essentially in a row parallel to the fifth side 42 and sixth side 46, respectively. The two first clamping pockets 112 are each positioned at a distance 116 from the fifth side 42, and the two second clamping pockets 114 are each positioned at a greater distance 118 from the fifth side 42 compared to the distance 116, and thus close to the sixth side 46. Therefore, the two first clamping pockets 112 are located on the hydraulic block 10 diagonally opposite the two second clamping pockets 114 (see Fig. 7).The clamping pockets 112, 114 are produced in a first clamping position of a machining process and serve to clamp the hydraulic block 10 for further machining.

[0061] Within the 35 series, in all hydraulic block types 28, 30, 84, 86, 88, 90, 92, 94, all first clamping pockets 112 have the same distance 116 and all second clamping pockets 114 have the same distance 118 to the fifth side 42, regardless of the thickness 56 of the hydraulic block 10. Furthermore, one of the first clamping pockets 112 has the same vertical distance 120 and the other of the first clamping pockets 112 has a greater vertical distance 122 to the second side 26. Both vertical distances 120, 122 are the same for every height 48. A variation in thickness 56 results in a variation in the distance to the sixth side 46, and a variation in height 48 results in a variation in the vertical distance to the first side 24. The same applies to the vertical distances of the two second clamping pockets 114 to the second side 26 (not shown in the diagram).

[0062] The four taller hydraulic block types 28, 84 and 30, 86 shown on the left in Fig. 2 are used in particular to accommodate hydraulic components for generating brake pressure and simultaneously components for modulating the generated brake pressure. This preferably implements an IPB system. The hydraulic block types 28, 84 and 30, 86 differ from each other in their installation position. In the regular hydraulic block types 28, 84, the first side 24 functions as the reservoir side 32. In the inverted hydraulic block types 30, 86, when the installation position is rotated by 180° about the longitudinal axis 106 of the master cylinder mount 104 or X-axis 54, the second side 26 serves as the reservoir side 32. The bore in the housing 22 is adapted accordingly where necessary. Furthermore, the hydraulic block types 28 and 84, and 30 and 86, differ in their thickness 56 and thus in their performance.

[0063] The four lower hydraulic block types 88, 92 and 90, 94 shown on the right in Fig. 2 are used in particular to accommodate hydraulic components solely for generating brake pressure as an actuation unit, preferably of a DPB system. Hydraulic block types 88, 92 and 90, 94 thus differ from hydraulic block types 28, 84 and 30, 86 with regard to their function. Furthermore, hydraulic block types 88, 92 are of a standard design, in which the first side 24 serves as the reservoir side 32. Hydraulic block types 90, 94, on the other hand, have an inverted installation position, rotated by 180° about their longitudinal axis 106 of the master cylinder mount 104. The second side 26 serves as reservoir side 32. Furthermore, the thicker hydraulic block types 92 and 94 have a higher performance than the thinner hydraulic block types 88 and 90.

[0064] Fig. 3 shows, on the left, hydraulic block type 28 or 84, with a view of its fifth side 42, or motor side. The fifth side 42 is identical in both hydraulic block types 28 and 84, which differ in their thickness 56. In comparison, Fig. 3 shows, on the right, a view of the fifth side 42, or motor side, of hydraulic block type 88 or 92, which differ in their thickness 56 but have the same fifth side 42.

[0065] The external force cylinder receptacle 98 projects into the fifth side 42 and extends with its longitudinal axis 100 perpendicular to the fifth side 42. Furthermore, the external force cylinder receptacle 98, with its longitudinal axis 100, is located with respect to the height 48 between the main cylinder receptacle 104 with its longitudinal axis 106 and the second side 26. Two first index points 124 are also provided on the fifth side 42, close to the second side 26 and spaced apart from each other, one near the third side 36 and the other near the fourth side 40. Two further first index points 124 are provided close to the first side 24 and spaced apart from each other, one near the third side 36 and the other near the fourth side 40. Thus, the four first index points 124 are essentially arranged at each corner of an imaginary quadrilateral and serve as contact points 125 in an associated manufacturing process, in particular as counter-bearing points (Fig. 7).The index points 124 are positioned identically on the fifth side 42 in all hydraulic block types 28, 84, 88, 92 and also 30, 86, 90, 94 (Fig. 4) in relation to the second, third and fourth sides 26, 36 and 40. The distance of the index points 124 to the first side 24 varies depending on the height 48.

[0066] Furthermore, a second index point 126, designed as an index bore, is provided on the fifth side 42 between the external force cylinder receptacle 98 and the first side 24. For the higher hydraulic block types 28 and 84, this second index point 126 is positioned at a slight distance from the first side 24, while for the lower hydraulic block types 88 and 92, it is located close to the first side 24 and always close to the fourth side 40. The index point 126 serves as an alignment receptacle 127 against which the hydraulic block 10 is to be aligned during its manufacturing process (Fig. 7). For this purpose, the second index point 126 is designed with a recess in the fifth side into which a pin engages as a positioning element during the manufacturing process. A third index point 128 is arranged diametrically opposite the second index point 126 on the fifth side 42 to the external force cylinder receptacle 98, which is designed like the second index point 126 and also serves as an alignment receptacle 127 (Fig. 7).The third index point 128 is located on the fifth side 42 in a corner between the third side 36 and the second side 26. Index points 126 and 128 are also positioned identically on the fifth side 42 in all hydraulic block types 28, 84, 88, 92 and also 30, 86, 90, 94 (Fig. 4), relative to the second, third, and fourth sides 26, 36, and 40. The distances between index points 126 and 128 and the first side 24 vary depending on the height 48.

[0067] Furthermore, each housing 22 has a dashed-line receptacle 130 for a pedal feel simulator with a simulator axis 132 extending perpendicular to the fifth side 42. The simulator axis 132 extends parallel to the longitudinal axis 100 of the external force cylinder receptacle 98. The simulator axis 132 is also positioned between the longitudinal axis 100 and the fourth side 40 at a smaller vertical distance 133 to the second side 26 than the longitudinal axis 100 with its vertical distance 102. The vertical distance 133 is the same in all hydraulic block types 28, 84, 88, 92 and also 30, 86, 90, 94 (Fig. 4). Furthermore, the recording 130 extends from the sixth page 46 into page 46 and ends spaced apart from the fifth page 42. This blind-hole-like recording 130 is thus positioned identically within the series 35 in relation to the longitudinal axes 100 and 106 and to the second, third and fourth pages 26, 36 and 40.

[0068] Furthermore, Fig. 3 shows that in each hydraulic block type 28, 84, 88, 92 and also 30, 86, 90, 94 (Fig. 4), two connection receptacles 134 project into its respective fifth side 42, which are arranged identically with respect to the longitudinal axes 100 and 106 as well as to the second, third and fourth sides 26, 36 and 40. Depending on the hydraulic block type 28, 84 or 88, 92, the two connection receptacles 134 have different functions.

[0069] In the two hydraulic block types 28, 84 of the IPB system shown on the left in Fig. 3, a connection receptacle 134 arranged close to the receptacle 130 serves to receive a wheel connection leading to an associated wheel brake, and the further connection receptacle 134 arranged close to the master cylinder receptacle 104 serves to receive one of two suction connections not shown for a HAD braking system (HAD, Highly Automated Driving, i.e. an intermediate step between assisted driving and autonomous driving).

[0070] Furthermore, the left-hand hydraulic block types 28, 84 are each provided with three additional connection receptacles 136 for receiving a wheel connection, which project into the fifth side 42. For highly automated driving (HAD), three additional connection receptacles 138 are provided in addition to the connection receptacle 134. These four connection receptacles 134, 138 serve to connect the hydraulic block type 28, 84 to another unit for highly automated driving, such as an RBU unit (RBU, Regenerative Brake Unit).

[0071] In a standard variant of an IPB system, only the connection receptacles 134, 136 leading to the four wheel connections are provided in the housing 22 of the associated hydraulic block types 28, 84. Thus, all connection receptacles 134, 136 are identical in their position relative to the longitudinal axes 100 and 106 and the simulator axis 132 in all hydraulic block types 28, 84, which differ in their function in this respect.

[0072] In the case of the two right-hand hydraulic block types 88, 92 of the DPB system shown in Fig. 3, the connection receptacles 134 serve to accommodate one connection each for an associated brake circuit of a modulation unit to be connected to the hydraulic block type 88, 92, such as an ESP system (ESP, Electronic Stability Program).

[0073] Furthermore, three continuous motor contact receptacles 140 and one continuous sensor receptacle 142 for a motor rotation position sensor (RPS contact) are provided from page 42 on the fifth side to page 46. These are designed and positioned identically in all hydraulic block types 28, 84, 88, 92 and also 30, 86, 90, 94 (Fig. 4).

[0074] In all hydraulic block types 28, 84, 88, 92 shown in Fig. 3, the first side 24 serves as the reservoir side 32. In the left-hand hydraulic block types 28, 84 of the IPB system, three reservoir receptacles 144 are provided (shown with dashed lines), to each of which a corresponding chamber of the reservoir 34 is to be connected (not shown). In the right-hand hydraulic block types 88, 92, two reservoir receptacles 144 are provided for the DPB system. The aforementioned and other hydraulic components are connected in the housing 22 by means of lines (largely not shown) according to a hydraulic circuit diagram.

[0075] Fig. 4 shows hydraulic block types 30, 86, 90, and 94 of the same series 35. Fig. 4 also shows the view of the fifth side 42, or motor side, after the mountings have been manufactured. In contrast to hydraulic block types 28, 84, 88, and 92 shown in Fig. 3, the corresponding reservoir mounts 144 of the four hydraulic block types 30, 86, 90, and 94 are designed to project not into the first side 24, but into the second side 26, and are connected to the other hydraulic components by means of lines according to a partially adapted, associated hydraulic circuit diagram.

[0076] For each installation position in the corresponding vehicle, the four hydraulic block types 30, 86, 90, 94 must be rotated 180° about the longitudinal axis 106 or the X-axis 54 so that the reservoir mounts 144 are located in the upper installation position. Accordingly, the second side 26 serves as the reservoir side 32. The remaining sides 42, 46, 36, 40 of the housing 22 of hydraulic block types 30, 86 are structurally and functionally identical to the hydraulic block types 28, 84 shown on the left in Fig. 3. The remaining sides 42, 46, 36, 40 of hydraulic block types 90, 94 are structurally and functionally identical to the hydraulic block types 88, 92 shown on the right in Fig. 3. After rotating the hydraulic block types 30, 86, 90, 94 shown in Fig. 4 by 180° about the longitudinal axis 106, the fifth side 42, or motor side, is located below the plane of the drawing. The third side 36 remains as the mounting side.This means that, when installed in the vehicle, the motor side and the connection mounts 134, 136, 138, as well as the motor 44, are located on the right-hand side in the direction of travel. The main cylinder mount 104, viewed from the external power cylinder mount 98, faces away from the reservoir side 32 formed with the second side 26. This installation position is referred to as the inverse arrangement or option.

[0077] In contrast, the hydraulic block types 28, 84, 88, 92 shown in Fig. 3 represent a so-called regular arrangement, option, or installation position. In this configuration, the fifth side 42, or motor side, and the motor 44 are located on the left side in the direction of travel. Viewed from the external power cylinder mount 98, a mechanical actuation area defined by the main cylinder mount 104 is positioned facing the reservoir side 32. The reservoir side 32 is the first side 24.

[0078] The hydraulic block 10 described in Figures 1 to 4, in its various hydraulic block types 28, 84, 88, 92 and 30, 86, 90, 94 of the same series 35, is manufactured using a special production process and is subsequently assembled into the respective hydraulic power unit 10. The identical positions of the described fixtures during manufacturing and assembly result in significant savings in time, material, and costs. Thus, a single tool can remain in the same position during machining across multiple hydraulic block types 28, 84, 88, 92 and 30, 86, 90, 94. Furthermore, a single production line can be used for all hydraulic block types 28, 30, 84, 86, 88, 90, 92, 94.

[0079] The manufacturing process is a machining process in which the blank 12 of the hydraulic block 10, as shown in Fig. 1, which is extruded by means of an extrusion process and separated from the extrusion profile, is machined. In a first step, the blank 12 with its identification element 60 on the sixth side 46 is provided. Fig. 5 shows a first clamping device 146 with a pincer-shaped abutment 148 or a first clamping jaw, in which the blank 12 has been inserted in a first clamping position 150. The view in Fig. 5 is directed towards the fifth side 42 of the hydraulic block 10. A clamping device 152 or second clamping jaw presses against the blank 12 and the abutment 148 and clamps the blank 12 between the abutment 148 and the clamping device 152 for further machining.The fifth side 42 rests only at its four index points 124 on the pincer-shaped abutment 148 at each corresponding pincer arm 154. This leaves the fifth side 42 freely accessible for machining with a tool (not shown), such as a drill or milling tool. The four index points 124 form contact points 125 in the direction of the Y-axis 58. Thus, the fifth side 42 is only contacted at these points on the abutment 148, so that any unevenness on the fifth side 42 does not interfere.

[0080] Fig. 6 shows the first clamping device 146 in the first clamping position 150 with a view to the fourth side 40. The position and orientation of the blank 12 are clearly defined by the previously described recognition element 60 on the sixth side 46. Furthermore, the inserted blank 12 has been positioned and aligned with respect to the Z-axis 50 at the first stop point 74 on the first side 24. For this purpose, a stop element 156 is provided in or on the clamping device 146, against which the stop point 74 rests. The stop element 156 is height-adjustable for different heights 48 within the series 35 or, preferably, is designed to be interchangeable in different lengths. The stop point 74 is variable with respect to the Z-axis 50. The blank 12 shown has a lower height of 48, for example for a DPB system, while the height of 48 for an IPB system is indicated by a dashed line.

[0081] With respect to the X-axis 54, the blank 12 is positioned and aligned at the two second stop points 76, 78, which, in the embodiment shown in Figs. 5 and 6, are located on the fourth side 40. As shown in Figs. 1 and 2, the two second stop points 76, 78 can also be provided on the third side 36. For this purpose, a stop arm 158 is provided in or on the clamping device 146 at the clamping element 152, against which the stop point 76 or 78 rests. Opposite in the X-direction is a pressure plate 160 (Fig. 5), which presses the blank 12 against the two stop arms 158.

[0082] The third side 36 and the fourth side 40 are otherwise freely accessible for machining by a tool not shown. Furthermore, the blank 12 or the hydraulic block 10 is clearly defined and not over-constrained during subsequent machining, particularly cutting, by means of the three stop points 74, 76, and 78. The hydraulic block 10 still has a certain degree of freedom of movement, which reliably prevents stresses.

[0083] Furthermore, to accommodate the recognition element 60 in the clamping device 146 on the clamping device 152, a counterform 164 is provided on a bearing surface 162 facing one of the sixth sides 46 of the clamping device 152, which interacts with the recognition element 60. The counterform 164 is designed here as a linear groove into which the rib-shaped recognition element 60 can engage. In this case, the thickness 56 of the hydraulic block 10 is comparatively small. To compensate for the reduced thickness 56, an insert element 166 is provided, which has a bearing surface 168 facing one of the sixth sides 46 with a counterform 170 that interacts with the recognition element 60. In addition, the insert element 166 has a surface 172 opposite the support surface 168, which rests against the support surface 162 of the clamping device 152 and has a form engaging in the counter-form 162, which is preferably designed like the recognition element 60.The insert element 166 is inserted between the support surface 162 of the clamping device 152 and the sixth side 46. As indicated by the arrows, the clamping device 152 is pressed against the abutment 148 and thus, in conjunction with the detection element 60, against the sixth side 46. For thicker hydraulic blocks 10, the insert element 166 is omitted. This allows different hydraulic block types 28, 30, 84, 86, 88, 90, 92, 94, which also differ in their thickness 56 and / or height 48, to be clamped and further processed using only one first clamping device 146. This results in considerable cost savings.

[0084] Fig. 7 shows a general representation of the sides 36, 40, and 42 of the hydraulic block 10, which are to be machined or have been machined in the first clamping position 150 by means of a machining process. The hydraulic block 10 shown has a height 48 as required for an IPB system. The lower height 48 sufficient for a DPB system is indicated by dashed lines. In the first clamping position 150, the fifth side 42 is machined by milling or drilling into or through the fifth side 42, creating the connection receptacles 134, 136, 138, the external force cylinder receptacle 98, the index points 126, 128 serving as alignment receptacles 127, the motor contact receptacles 140, and the sensor receptacle 142. In addition, the third side 36, forming the two first clamping pockets 112 and the main cylinder mount 104, and the fourth side 40, forming the two second clamping pockets 114, are machined.The hydraulic block 10 is positioned accordingly by rotating a clamping beam (not shown) around the Z-axis 50. Furthermore, additional unlabeled and not shown bores are drilled on sides 36, 40, and 42 to create lines between the various fixtures. Angled bores are also possible by rotating the clamping beam accordingly.

[0085] In the case of regular hydraulic block types 28, 84, 88, 92, the first side 24 and the corresponding stop point 74 face a reservoir interface, or the first side 24 corresponds to reservoir side 32. In the case of inverted hydraulic block types 30, 86, 90, 94, the first side and the corresponding stop point 74 face away from the reservoir interface. The opposite second side 26 corresponds to reservoir side 32.

[0086] Figures 8 to 10 show a second clamping device 174 for machining the hydraulic block 10, which was machined in the first clamping position 150, in a second clamping position 176. Figure 8 shows the clamping device 174 without the hydraulic block 10 to be machined and shows a view of a clamping block 178 from which four counter-bearing points 180 project. The hydraulic block 10, with its index points 124 on its fifth side 42, is to be positioned against these counter-bearing points for the second clamping position 176. A recognition pin 182, or Poka-Yoke pin, also projects from the clamping block 178 and serves to position the hydraulic block 10 correctly. For the second clamping position 176, the hydraulic block 10 is positioned on the clamping block 178 such that the recognition pin 182 projects into the external force cylinder receptacle 98 formed in the first clamping position 150. In addition, two index pins or pins 184 are provided diametrically opposite each other on the clamping block 178, which protrude from the clamping block 178.The individual pen 184 is preferably designed as a round and sword pen.

[0087] For the second clamping position 176, the hydraulic block 10 is inserted into the clamping block 178 in such a way that the index points 124, which served as contact points 125 in the Y-direction in the first clamping position, also serve as contact points 125 in the Y-direction in the second clamping position 176 at the corresponding counter-bearing points 180 projecting from the clamping block 178. This provides a certain distance between the fifth side 42 and the clamping block 178, so that any unevenness on the fifth side 42 caused by the previous extrusion process does not interfere with further machining (Fig. 10). Thus, no tolerance shift occurs due to the unmachined fifth side 42 or motor side. For insertion, the hydraulic block 10 with its external force cylinder receptacle 98 is guided around the recognition pin 182 and, using the two pins 184, is marked out and aligned in the index points 126, 128 which serve as alignment receptacles 127.Furthermore, the clamping block 178 has two clamping fingers 186 on each of its two sides, which are arranged offset from each other with respect to the Y-axis 58. For clamping in the second clamping position 176, each clamping finger 186 engages positively in the respective clamping pocket 112, 114 formed in the first clamping position 150 and pulls the hydraulic block 10 with its fifth side 42 into and against the clamping block 178. This leaves the sixth side 46, as well as the first side 24 and the second side 26, freely accessible for machining. At the same time, with such a clamping arrangement on the specially positioned clamping pockets 112, 114 (as described for Fig. 2), different thicknesses 56 (see Fig. 10) and heights 48 (see Fig. 9) of various hydraulic blocks 10 of the 35 series have no effect.With just a single second clamping device 174, all hydraulic block types 28, 30, 84, 86, 88, 90, 92, 94 can also be clamped in the second clamping position 176 and further machined. This results in considerable cost savings.

[0088] In the second clamping position 176, the sixth side 46, or control unit side, is machined to form all necessary valve mounts 188, the mount 130 for the simulator, and most of the sensor mounts 190. The valve mounts 188 are shown as dashed lines in the case of a hydraulic block 10 for the IPB system. The hydraulic block 10 then has the larger height 48 shown as a dashed line.

[0089] Furthermore, in the second clamping position 176, in the case of a regular hydraulic block type 28, 84, 88, 92, the first side 24 is machined to form the necessary reservoir receptacles 144. In the case of an inverted hydraulic block type 30, 86, 90, 94, in the second clamping position 176, after rotating a clamping beam (not shown) about its axis of rotation and thus the clamped hydraulic block 10 about its X-axis 54, its second side 26 is machined. This involves milling a portion of the second side 26 and forming the necessary reservoir receptacles 144 in the milled portion of the second side 26. The second side 26 is thus configured as the reservoir side 32.

[0090] Furthermore, additional unlabeled and not shown bores are drilled on sides 24, 26, and 46 to create conduits between the various fixtures. Angled bores are also possible by rotating the clamping beam (not shown).

[0091] Figures 11 and 12 show that when the associated reservoir 34 is mounted on the hydraulic block 10 machined in the second clamping position 176, the same alignment receptacles 127 are used for attachment to a mounting block 192 as are used in the second clamping position 176. Figure 11 shows a regular hydraulic block type 28 or 84, 88, 92, which, in the upper installation position, is attached to the mounting block 192 at the second index point 126 as an alignment receptacle 127, and in the lower installation position at the third index point 128 as an alignment receptacle 127. Figure 12 shows an inverse hydraulic block type 30 or 86, 90, 94, which, in the upper installation position, is attached to the mounting block 192 at the third index point 128 as an alignment receptacle 127, and in the lower installation position at the second index point 126. This means that an identical mounting block 192 is used as a workpiece carrier for all hydraulic block types 28, 30, 84, 86, 88, 90, 92, 94, regardless of system or size.Additionally, costs are saved.

Claims

Claims 1. Hydraulic block (10) for a hydraulic unit (14), in particular of a vehicle brake system, which is designed as a block-shaped housing (22) with six sides (24, 26, 36, 40, 42, 46), wherein a height (48) extending along a Z-axis (50) lies between a first side (24) and an opposite second side (26), a length (52) extending along an associated X-axis (54) lies between a third side (36) and an opposite fourth side (40), and a thickness (56) extending along an associated Y-axis (58) lies between a fifth side (42) and an opposite sixth side (46), characterized in that a detection element (60) is arranged on the sixth side (46).

2. Hydraulic block according to claim 1, characterized in that the detection element (60) is integrally formed on the sixth side (46) and is in particular designed in a rib-like manner.

3. Hydraulic block according to claim 1 or 2, characterized in that the detection element (60) is positioned in the same way in relation to the second side (26) over at least two hydraulic block types (28, 30, 84, 86, 88, 90, 92, 94), wherein the at least two hydraulic block types (28, 30, 84, 86, 88, 90, 92, 94) differ in terms of their installation position in a respective installed state and / or their performance and / or their function.

4. Hydraulic block according to one of claims 1 to 3, characterized in that an information element (68) is arranged on one of the six sides (24, 26, 36, 40, 42, 46), which is preferably located on the fifth side (42) opposite the sixth side (46) and in particular in relation to the second side (26) across at least two hydraulic block types (28, 30, 84, 86, 88, 90, 92, 94) is positioned the same.

5. Hydraulic block according to one of claims 1 to 4, characterized in that at least one index point (124, 126, 128) is arranged on the fifth side (42), which is positioned in the same way, in particular in relation to the second side (26), across the at least two hydraulic block types (28, 30, 84, 86, 88, 90, 92, 94).

6. Hydraulic block according to one of claims 1 to 5, characterized in that a first stop point (74) is arranged on the first side (24), which serves as a stop point (74) in relation to the Z-axis (50) in a machining process in a first clamping position (150), and two second stop points (76, 78) are arranged on the third side (36) or fourth side (40), which serve as stop points (76, 78) in relation to the X-axis (54) in the machining process in the first clamping position (150), and in particular the two second stop points (76, 78) are positioned identically in relation to the second side (26) and in particular in relation to the at least one index point (124, 126, 128) across the at least two hydraulic block types (28, 30, 84, 86, 88, 90, 92, 94).

7. Hydraulic block according to one of claims 1 to 6, characterized in that at least one first clamping pocket (112) is provided on the third side (36) and at least one second clamping pocket (114) is provided on the opposite fourth side (40), and in particular the at least one first clamping pocket (112) and the at least one second clamping pocket (114) are positioned in the same way in relation to the second side (26) and preferably in relation to the fifth side (42) over the at least two hydraulic block types (28, 30, 84, 86, 88, 90, 92, 94).

8. Method for machining and manufacturing a hydraulic block (10) according to any one of claims 1 to 7, comprising the steps: - Providing a hydraulic block (10) as a blank (12) with a recognition element (60) on a sixth side (46), - Inserting the provided hydraulic block (10) into a first clamping position (150) in a support (148), with one of the sixth sides (46) on the opposite fifth side (42) at least three contact points (125) are provided as index points (124) at which the hydraulic block (10) is placed on the abutment (148) and the fifth side (42) is otherwise freely accessible for machining by a tool, - Aligning the inserted hydraulic block (10) with respect to the Z-axis (50) at a stop point (74) on a first side (24) and with respect to the X-axis (54) at two stop points (76, 78) on a third side (36) or an opposite fourth side (40), wherein the third side (36) and / or the fourth side (40) are otherwise freely accessible for machining by a tool, - Pressing a clamping device (152) against the sixth side (46) in conjunction with the detection element (60).

9. Method according to claim 8, characterized in that, for the interaction of the clamping device (152) with the recognition element (60), a counter-form (164) cooperating with the recognition element (60) is provided on one of the sixth sides (46) of the clamping device (152), into which the recognition element (60) is inserted.

10. Method according to claim 9, characterized in that for a hydraulic block type (28, 30, 88, 90) with a smaller thickness (56) an insert element (166) is provided which has a counter-form (170) cooperating with the recognition element (60) and is inserted between the support surface (162) of the clamping device (152) and the hydraulic block (10) on its sixth side (46).

11. Method according to one of claims 8 to 10, characterized in that after pressing the clamping means (152) against the sixth side (46) machining of the fifth side (42) and machining of the third side (36) is carried out to form at least one first clamping pocket (112) and of the fourth side (40) to form at least one second clamping pocket (114).

12. Method according to claim 11, characterized in that the hydraulic block (10) machined in the first clamping position (150) is machined in a second clamping position (176) by means of a clamping device in each case. the clamping finger (186) engaging at least one first clamping pocket (112) and at least one second clamping pocket (114) is pressed with its fifth side (42) against a clamping block (178).

13. Method according to claim 12, characterized in that in the second clamping position (176) the fifth side (42) is pressed against the clamping block (178) at at least one contact point (125) which also served as a contact point (125) in relation to the Y-axis (58) in the first clamping position (150) and in particular at least one alignment receptacle (127) formed in the first clamping position (150) with a pin (184) engaging therein is used for alignment.

14. Method according to claim 12 or 13, characterized in that in the second clamping position (176) machining of the sixth side (46) is carried out and in particular, depending on the hydraulic block type (28, 30, 84, 86, 88, 90, 92, 94), machining of the first side (24) or machining of the second side (26) is carried out, forming at least one reservoir receptacle (144).

15. Method according to claim 13 or 14, characterized in that when mounting at least one reservoir (34) on the hydraulic block (10) machined in the second clamping position (176), the same at least one alignment receptacle (127) on the fifth side (42) is used for fastening to a mounting block (192) as is also used in the second clamping position (176).

Images