MXPA00006708A - Hose fitting and die for preparation - Google Patents

Abstract

A system and method for hydroforming hose fittings (10) for use with hose assemblies (30).

Description

ACCESSORY OF HOSE AND DIE FOR PREPARATION BACKGROUND OF THE INVENTION This invention relates, generally, to a hose assembly, which employs a hydroformed fitting , and, more particularly, to an improved hydroforming system and a method for using a die to hydroformer a hose fitting. Hydroforming, sometimes referred to as fluid formation, developed at the end of the decade 1940 and early 1950, in response to a need for a more efficient, cost-effective method to produce metal parts. As a general principle, hydroforming involves the application of a predetermined fluid pressure to an area of a metal surface to be manipulated. When the metal surface is a tube, an internal fluid pressure is applied as the tube bends and stretches. Generally, the hydroforming of a tube can be achieved by filling the inside of the tube with the fluid, holding it there and increasing the internal pressure.

Depending on the die tool used, hydroforming can also be used to radially expand the tube. Specific advantages of hydroformating include: relatively inexpensive tooling, the availability of complex configurations and contours, minimal material thinning (hydroforming makes the metal flow rather than stretching it - thinning is usually less than 10%), finishing costs Reduced (for comparison, matching forming die methods can cause scratch marks, shock and stretch lines) and accuracy even with difficult configurations, where high tolerances are required. Typically, fittings manufactured for use in connection with hose assemblies are machined at considerable expense. When a one-piece machining accessory is not available or is not economical, a brass welding procedure can be used to supply the desired two-component accessory. Inherently, brass welding provides structural weakness, which can manifest itself through flaws in the application of routine pressure forces. When one-piece fittings can be machined, they are difficult to bend when a curved configuration is required. Even so, bending introduces weakness of the material and increases the potential for failure when applying pressures. There are a considerable number of problems and deficiencies relating to the manufacture of hose fittings and, subsequently, assemblies with such fittings. The search for an alternative, efficient and effective cost, for machining has been of increasing interest in the technique. There is a need for a system / method, accessory and / or hose assembly, which take advantage of the manufacturing and commercial benefits typically associated with hydroforming.

OBJECTS OF THE INVENTION It is an object of this invention to overcome the problems and drawbacks of the prior art, including those described above. Another object of this invention may be the provision of a hose assembly, prepared using a hydroforming process. Another object of the present invention may be to provide one-piece hose fittings, which are formed unitarily, without brass welding, to maintain structural integrity. It may also be an object of this invention to provide an accessory that meets the relevant specifications of dimension, design and / or industrial performance or its equivalents, such an accessory can be hydroformed and / or used in connection with a hose assembly, which also meets with the preceding specifications or their equivalents. It may also be an object of this invention to provide a system for the hydroforming, of a unitary hose fitting, in one piece, such a system may include a die tool and / or a set of dies, as they can be used to hydroformer an accessory that meets various industrial specifications or their equivalents. It may also be an object of the present invention to provide a system having an exchangeable die tool and / or dies, so that hose fittings of various designs and dimensions can be hydroformed from a tubular material. It may also be an object of this invention to provide a system and / or method for hydroforming a hose fitting, for use in connection with a safety mechanism, so that this hose can be assembled with such an accessory. It may also be an object of this invention to provide a hydroformed metal hose fitting, so that this fitting is tantially free of machining lines, scratch marks and related surface deformities, typically observed as a result of machining or mechanical procedures. related polishers, and tantially without thinning of the material, which allows a degree of thinning inherent to hydroforming processes.

It may also be an object of this invention to provide a hose fitting assembly, system and / or method, which obviates the need for expensive finishing work on this hose fitting. Those skilled in the art will understand that one or more aspects of this invention can fulfill certain objects, while one or more other aspects may meet certain other objectives. Each objective may not equally be applied, in all cases, to each aspect of this invention. As such, the following objects - in light of the prior art with respect to hose assemblies, hose fittings and methods for their preparation - can be seen in the alternative with respect to any aspect of the present invention. Other objects, features and advantages of the present invention will be apparent from the following summary and description of the preferred embodiments and, as such, will readily be apparent to those skilled in the art who are aware of various accessories, assemblies and hose requirements for their Use in trade and industry. Such objects, features, benefits and advantages shall be apparent from the foregoing, taken in conjunction with the examples, tables, data and accompanying figures, and all reasonable inferences derived therefrom.

SUMMARY OF THE INVENTION This invention includes an improved hose fitting, as well as an assembly for use with it, together with a system and / or method for its preparation. The invention overcomes certain well-known problems and deficiencies, including those outlined above, while providing a cost-effective alternative to current manufacturing and machining operations. In part, the present invention relates to a hose assembly, which includes: (1) a single hose fitting, hydroformed from a pipe, and (2) a hose, functionally and dimensionally compatible with the hose fitting. Consistent with the benefits available through hydroforming but hitherto not realized in the context of a hose fitting, the application of internal tubular pressure results in a number of structural features, not available with the use of the prior art, which they include the metal flow without stretching or substantial thinning of the metal. In such form, a one-piece fitting can be prepared unitarily without brass welding and without marks of lines or scratches or other surface imperfections, which typically result from a machining operation. At least one tine can be incorporated in the configuration of the accessory, so that the hose component coincides with the accessory and makes contact with a tine incorporated therein. In preferred embodiments, the hydroformed hose fitting has at least one portion for the attachment of a safety mechanism. In such an embodiment, the assembly also includes a mechanism to secure the hose to the fitting. In highly preferred embodiments and without limitation, the mechanism may be a ferrule or clamp. While screw style fittings may be less preferred for certain assemblies or uses, they may also be hydroformed, in accordance with this invention, provided that measures are taken to maintain structural integrity about the thread portion. See, for example, U.S. Patent No. 5,333,775, mentioned below. Similarly, in preferred embodiments, the hydroformed accessory of the assembly has dimensional and execution properties selected from, among other properties, the dimensional and performance properties that meet the specifications of the J516 standard of the Society of Automotive Engineers (SAE) or their equivalents. , for hydraulic hose accessories. In a similar manner, preferred embodiments of the present assembly include those where the hose component has selected dimensional and performance properties of the dimensional and performance properties that meet the specifications of SAE J517 or equivalent, for hydraulic hoses. Such standard specifications for hydraulic hose and hose fittings, like other hoses and accessory components, are well known to those skilled in the art, but have not been used in conjunction with accessories or assemblies until now. of hoses or their manufacture. The incorporation of such standard specifications will be well known to those skilled in the art taking this invention into account. The compatibility of the hose component with the accessory of this invention may be in accordance with the recommended practice of SAE, J1273. In particular, according to the recommended practice according to SAE J1273, the pressure of an assembly system must first be determined. The hose selection is then made so that the maximum recommended operating pressure is equal to or greater than the system pressure. Pressure surges greater than the maximum operating procedure will tend to shorten the applicable life of the hose; therefore, such pressures must be taken into account in the determination of compatibility. Other factors include, without limitation, suction (negative pressure), temperature of the fluid passing through the hose, compatibility of the fluid with the hose and fittings, size of the components compared to the pressure and the flow rate of the fluid under pressure, the environment (ultraviolet light, ozone, water balance, chemicals, etc.) that can cause degradation, mechanical loads (induced by bending, twisting, etc.) and abrasion and electrical conductivity. Such factors and other related considerations are well known to those skilled in the art and will be understood as applicable to the present hydroformed hose fitting and to its use with hose assemblies, as those individuals are aware of this invention. Other preferred embodiments of the assembly of this invention include those where multiple prongs are provided in the accessory component. These tines may have a variety of configurations, including, without limitation, circumferential edges, squares, slats or a combination of such configurations. Similarly, in preferred embodiments, the accessory of this invention has a uniform wall thickness dimension. Even so, where variations are required, so that they can be introduced by the hydroforming of the accessory, according to the methods and procedures described in U.S. Patent No. 5,333,775, which is incorporated herein in its entirety as reference.

In part, the present invention is an improved hydroforming system. The improvement includes a plurality of dies, but at least a first and second opposed dies, which are removably coupled to each other and which define a cavity for the placement of a tubular material. Reference is made to several figures described below. Each die has at least one concave portion, and these concave portions are arranged to define a cavity having the design and external dimensions of a hose fitting. In preferred embodiments, the dies are configured so that the cavity has a design and dimensions that meet the specifications of SAE J516 standard for hydraulic hose fittings, or a design and dimensions equivalent to such standard specifications. In highly preferred embodiments, the cavity has a concave portion to thereby deliver a hose fitting with a configuration that can be coupled with a ferrule. In a similar manner, with or without such a configuration, a highly preferred embodiment provides a cavity having a concave portion for supplying at least one hose tine in the resulting fitting. In part, the present invention relates to a method of using a die to make a hose fitting. As described more fully before, such an accessory has a configuration suitable for use with a hose assembly. The method of the invention includes: (1) supplying a metal tube; (2) supply a die tool to couple the tube and define a configured cavity; (3) contacting the interior of the tube with an expansive material and retaining the material within the tube; (4) increasing the pressure of the expansive material inside the tube to a predetermined level, sufficient for the flow of the metal component of the tube and (5) coupling the tube with the aforementioned die tool to form an accessory of hose. As can be used with the present invention, a tubular preform is filled with a hydroforming fluid, by introduction to a fluid bath, injection or fluid placement therein. The ends of the tube can be capped to retain the fluid within the tube, with an internal pressure then increased to a desired level, according to techniques known to those skilled in the art. 0 in sequence or contemporaneously with this, the die tool is brought into contact with the tube to hydroformer a hose fitting having an external configuration and adjust the external dimensions defined by, and / or corresponding to, the configured cavity . The mechanical and hydraulic components that can be used with the present method are well defined, as illustrated by the description provided in US Patent No. 5,471,857, which is incorporated herein in its entirety. Other such components or mechanisms may include a cam lock of the type that can be arranged and configured to be used in conjunction with and / or the closures of the dies of Figures 5B and 5C, as described below. In preferred embodiments, the coupling of the die tool with a pressurized tube supplies a hose fitting with a design and dimensions selected from the group of properties that meet the specifications of the SAE J516 standard for hydraulic hose fittings or, without limitation, properties equivalent to such standard specifications. Alternatively, or in conjunction with, the coupling results in a dimensional configuration that provides a coincidence relationship with a ferrule. The present method was described above in terms of using a hydraulic fluid. In preferred embodiments, such a fluid is a hydraulic oil of the type that can be used in hydroforming operations of the prior art. In other embodiments, various other expansive materials may be used, as is well known to the persons skilled in the art and are aware of this invention. Such expansive materials include, without limitation, water, urethane and an explosive. Regardless of the identity or nature of the expansive material, internal pressures of the type useful with the present invention are preferably at least about 3850 kg / cm2. However, pressures less than 350 kg / cm2 to greater than 10,500 kg / cm2 may be employed, depending, at least in part, on the selection of the tubular material and the desired external diameter of the resulting hose fitting. Various other pressure parameters and methods may be used, as required by the particular hydroformed hose fitting and as is well known to those skilled in the art, who have knowledge of such articles, may be hydroformed. The method of this invention can be used in conjunction with one or more additional steps and / or processes. For example, a metal tube can be preformed or stamped, using an automatic punch or one of several commercially available stamping machines. See, for example, U.S. Patent No. 4,662,841, which is incorporated herein in its entirety. Several resulting tubular configurations can be produced. In particular and as a preferred embodiment of this invention, a tubular portion ultimately hydroformed to supply barbs of the hose may be preformed in a manner that provides a reduced outer diameter. Without limitation, reference is made to Figure 6. The preformed and / or stamped tube of Figure 6 can then be hydroformed as described herein, to supply a hose fitting of the type shown in Figure 7. The method of this invention It also considers one or more stages of the process before hydroforming. For example, the hose fitting of Figure 1 may be machined or otherwise manipulated with respect to the preformed and / or stamped portion to enlarge the diameter or internal, if required, to improve the flow properties of the fluid. Similarly, without limitation, the accessories of this invention can be heat treated after hydroforming, to improve various physical, structural and / or metallurgical properties. The expansion of the material is a problem during hydroforming operations. The expansion is limited to a given tubular material, having given internal and external starting diameters and a desired resulting outer diameter. The subsequent expansion results in an improper thinning of the material and a final failure at a certain application pressure. Such limits of expansion and pressure can be determined experimentally or by means of a computer simulation. For example, for a tubular preform of steel material 1010 (diameter of 19.05 mm t thickness of 2.413 mm) it was determined that the limit of the expansion of the external diameter is approximately 3 |%, beyond which a thinning occurs harmful of the material. For example, and using the above material specifications, a tube preform having 19.05 mm outside diameter can be properly expanded to provide an outer diameter of about 24.99 mm. With respect to the present invention and, in particular with reference to Figure 1, such expansion and limits may be more pertinent to the formation of raised portions 12 and the coincident relationship with a corresponding coupling mechanism (see Figure 4).

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a hose fitting, in accordance with this invention; Figure 2 is a schematic view of a die tool, configured with a cavity corresponding to the external dimensions of the fixture of Figure 1; Figure 3 is a perspective view, partially with separate parts, of an accessory, of the 37 degree flared type, female, in accordance with this invention and the SAE 1516 standard specification; Figure 4 is a partial fragmentary view of the hose assembly, in accordance with this invention; Figures 5A-5C schematically illustrate, in a cross-sectional view, die or die segments arranged and configured to provide a hydroforming cavity of the type that defines the design and external dimensions of a hose fitting of the invention and / or such an accessory in accordance with the relevant industrial, design and / or performance dimensional specifications; Figure 6 schematically shows a perspective view of a tube or portion thereof, one end of which has been manipulated prior to hydroforming; Figure 7 is a perspective view of a hose fitting, in accordance with this invention, hydroformed using a tube / portion of Figure 6. This view also includes silhouette lines, which show an internal diameter, partly attributable to the previous training and Figure 8 shows a partial cross-sectional view of another hose fitting and configuration, in accordance with this invention.

Detailed Description of Preferred Modes A representative hose accessory, in accordance with this invention, is shown in Figure 1. This accessory 10 is configured to supply raised portions 12 with a cavity 14 therebetween and a plurality of hose tines 16. The arrangement of the portions 12 and the cavity 14 provide a coincident relationship with a safety mechanism for a hose component, such mechanism includes a ferrule, as shown in Figure 4. The fitting 10 can be hydroformed from a tubular material, using the die tool 18 defining the cavity 20, as shown in the cross-sectional view provided by Figure 2. In preferred embodiments, the die tool 18 may comprise a first and second opposed dies, 22a and 22b, respectively . The cavity 20 includes at least one concave portion 24. As shown in Figure 2, the indian portion defines the design and external dimensions of a portion 12 of the accessory 10. Opposing dies, 22a and 22b, may also be configured, example, to provide a cavity that counts for any preform or stamp of the type described above. Therefore, opposite dies can define the design and external dimensions of an accessory, configured as shown in Figure 7. As illustrated in Figure 3, the accessory 10 can be angled and / or further manipulated after the hydroformation. This accessory 10 can be passed through a threaded nut 26, before or after entering the angle shown. The edge 28 is then flared to retain the nut 26 along the fitting 10. A hose assembly, in accordance with this invention, is illustrated by the partial fragmentary view illustrated in Figure 4. The assembly 30 includes a hose 32 in set with the accessory 34 and secured there by the mechanism 36. The coincident relationship of the mechanism 36 and the raised portion 38 of the accessory 34, together with the gripping action of the tines 40, ensure proper function of the assembly 30. A number of Barbed configurations are shown in Figure 4, starting from left to right: sharp, square and ribbon edges. Typically, a circumferential tine configuration will be used; however, a combination of barbs can be used with good effect. The accessory 10 can also be hydroformed from a tubular material, using die tools 18, such as those shown by the representation of Figures 5A-C. The die tool shown in the cross-sectional view of Figure 5A defines a cavity 46 and may comprise, as shown, the dies 44a-44d. In Figure 5B, a plurality of dies 48a-48e define the cavity 50. Similarly, the die tool, depicted in the cross-sectional view of Figure 5C, may comprise opposed dies 52a-52c to define the cavity 54 of the design . As described above, the tubular die material can be preformed to narrow at one of its ends. Such prior training can be achieved by stamping or other mechanical operations, using procedures and equipment well known to those skilled in the art. The tubular material 56 can be configured to have an end portion 58, as shown in Figure 6. For example, if the dimension a is 19.05 mm, the dimensions b and c can be 16,764 and 38.1 mm, respectively, to supply a useful pre-formed tube configuration. As illustrated in Figure 7, the preformed tube of Figure 6 can be hydroformed to supply the accessory 10. The arrangement of the portions 12 and the cavity 14 provide a corresponding relationship with a safety mechanism for the hose component. As discussed above, such a mechanism may include, but is not limited to, the ferrule or bushing 36 shown in Figure 4. As best shown in Figure 7, the internal diameter of the end 58 of the fixture is somewhat narrower, as re of tubular preform. As discussed above, various mechanical resources can be employed to increase the internal diameter of the end 58 to supply, if necessary, better flow properties. Reference is made to Figure 8 as a contrast point with the hose fitting of Figure 7. In particular, the arrangement of the portions 12 and the cavity 14 schematically illustrates the modification of the configuration of the accessory 10, so as not to exceed the theoretical or empirical limitations of the expansion of the material. The arrangement of the portions 12 and the cavity 14 allow a correspondingly secure relationship with a hose component, despite the reduced external dimensions of the portions 12.

EXAMPLES OF THE INVENTION The following examples and non-limiting data illustrate various aspects and features relating to the resulting method, system and accessories and assemblies of this invention, which include the surprising and unexpected manufacture of hose fittings, which use hydroforming technologies. . The following Examples 1 to 17 illustrate hoses of the type that can be used in conjunction with the accessories and / or assemblies of this invention. The dimension and design parameters of these hoses are well known to those skilled in the art who are aware of this invention. For example, the hoses of Examples 1-17 are hoses of the series 100R of the SAE standard, well known, (SAE 100R, etc.), the parameters of dimension and design of which can be found in the SAE standard 1517. Various performance specifications for such SAE 100R1-15 hoses are also well known, some of which are summarized in Tables la-b through 3a-b.

Example 1 Hydraulic Hose Covered with Rubber, Reinforced with Steel Wire (SAE 10ORÍ). A hose for use with petroleum-based hydraulic fluids, within a temperature range of -40 to + 100 ° C, and with various water-based hydraulic fluids. A hose, according to this example, can have an oil-resistant synthetic rubber inner tube, a single wire braid reinforcement and a synthetic rubber cover, weather resistant. A crease or braid of suitable material can be used on the inner tube and / or on the wire reinforcement to anchor the synthetic rubber to the wire. Alternatively, the same hose may have a cover designed for assembly with accessories that do not require the removal of the cover or one of its portions.

Example 2 Hydraulic Hose Covered with Rubber, Reinforced with Steel Wire, High Pressure (SAE 100R2). A hose for use with petroleum-based hydraulic fluids, within a temperature range of -40 to + 100 ° C, and with various water-based hydraulic fluids. A hose, according to this example, may have an oil-resistant synthetic rubber inner tube, a steel wire reinforcement and a synthetic rubber cover, weather and oil resistant. A crease or braid of suitable material can be used on the inner tube and / or on the wire reinforcement to anchor the synthetic rubber to the wire. Construction variations consistent with this invention are further described in SAE Standard J517.

Example 3 Hydraulic Hose Covered with Rubber, Double Fiber Braid (Non-metallic) (SAE 100R3). A hose for use with petroleum-based hydraulic fluids, within a temperature range of -40 to + 100 ° C, and with various water-based hydraulic fluids. A hose, according to this example, can have an oil-resistant synthetic rubber inner tube, two braids of suitable textile thread and an oil-resistant and weather-resistant synthetic rubber cover.

Example 4 Wire Inserted Hydraulic Suction Hose (SAE 100R4). A hose for use in low pressure and vacuum applications, with petroleum-based hydraulic fluids, within a temperature range of -40 to + 100 ° C, and with various water-based hydraulic fluids. A hose, according to this example, may have an oil-resistant synthetic rubber inner tube, a reinforcement consisting of one or more folds of woven or braided textile fibers, with a suitable spiral of the body wire, and a synthetic rubber cover, resistant to oil and weather.

Example 5 Hydraulic Hose Covered with Textile of a Single Wire Braid (SAE 100R5). A hose for use with petroleum-based hydraulic fluids, within a temperature range of -40 to + 100 ° C, and with various water-based hydraulic fluids. A hose, according to this example, may have an oil-resistant synthetic rubber inner tube, and two textile braids separated by a braid of high-tension steel wire. All the braids are impregnated with a synthetic rubber compound, resistant to oil and ildeu.

Example 6 Hydraulic Hose Rubber Cover, Single-Strand Fiber (Non-metallic) (SAE 100R6). A hose for use with petroleum-based hydraulic fluids, within a temperature range of -40 to + 100 ° C, and with various water-based hydraulic fluids. A hose, according to this example, can have an oil-resistant synthetic rubber inner tube, and a braided synthetic textile thread, and a synthetic rubber cover, resistant to oil and weathering.

Example 7 Thermoplastic Hydraulic Hose (SAE 100R7). A thermoplastic hose for use with petroleum-based hydraulic fluids, within a temperature range of -40 to + 93 ° C, and with various water-based hydraulic fluids. A hose, according to this example, can have a thermoplastic inner tube resistant to hydraulic fluids, with a suitable reinforcement of synthetic fibers and a thermoplastic cover resistant to hydraulic fluid and to the weather. Such non-conductive hose must be identified with an orange cover and an appropriate coating, in accordance with the Federal Regulation 595A. Such a hose is available for use in applications where it is in potential contact with algae voltage sources.

Example 8 High Pressure Thermoplastic Hydraulic Hose (SAE 100R8). A hose for use with petroleum-based hydraulic fluids, within a temperature range of -40 to + 93 ° C, and with various water-based hydraulic fluids. A hose, according to this example, can have a thermoplastic inner tube resistant to hydraulic fluids, with a suitable reinforcement of synthetic fibers and a thermoplastic cover resistant to hydraulic fluid and to the weather. Such a non-conductive hose, as with the hose of the preceding example, must be identified with an orange cover and an appropriate coating, in accordance with Federal Standard 595A. Again, such a hose is available for use in applications where the potential for contact with high voltage sources exists. Example 9 Hydraulic Hose Rubber Cover, Reinforced with Four Spiral Steel Wire, High Pressure (SAE 100R9). A hose for use with petroleum-based hydraulic fluids, within a temperature range of -40 to + 100 ° C, and with various water-based hydraulic fluids. A hose, according to this example, may have an oil-resistant, synthetic rubber inner tube, four-wire wire folds wound in alternate directions, and a weather-resistant synthetic rubber cover. A fold or braid of a suitable material can be used on the inner tube and / or on the wire reinforcement, for the entrance of the synthetic rubber to the wire. Alternatively, such a hose may have a cover designed for assembly with the accessories, which does not require the removal of the cover or one of its portions.

Example 10 Hydraulic Hose Rubber Cover, Reinforced with Four Spiral Steel Wire, for Heavy Duty (SAE 100R10). A hose that covers one section, for use with petroleum-based fluids within a temperature range of -40 to + 100 ° C, and with several water-based fluids. A hose, according to this example, may have an oil-resistant synthetic rubber inner tube, four-wire folds of heavy wire wound in alternate directions, and a weather-resistant synthetic rubber cover. A fold or braid of suitable material may be used on the inner tube and / or on the wire reinforcement to anchor the synthetic rubber to the wire. Alternatively, such a hose has a cover designed to be assembled with the accessories, which do not require the removal of the cover or a portion thereof. Example 11 Hydraulic Hose Rubber Cover, Reinforced with Six Spiral Steel Wire, for Heavy Duty (SAE 100R11). A hose for use with petroleum-based hydraulic fluids, within a temperature range of -40 to + 100 ° C, and with various water-based fluids. A hose, according to this example, may have an oil-resistant, synthetic rubber inner tube, six-coil wire coils wound in alternate directions, and a weather-resistant synthetic rubber cover. A crease or braid of suitable material can be used on the inner tube and / or on the wire reinforcement to anchor the synthetic rubber to the wire.

Example 12 Hydraulic Hose Covered with Rubber, Reinforced with Wire in Four Spirals, of High Impulse, for Heavy Work (SAE 100R12). A hose for use with petroleum-based fluids, within a temperature range of -40 to + 100 ° C, and with various water-based hydraulic fluids. A hose, according to this example, may have an oil-resistant synthetic rubber inner tube, four-coiled wire coils wound in alternate directions and a weather-resistant synthetic rubber cover. A crease or braid of suitable material can be used on or inside the inner tube and / or on the wire reinforcement to anchor the synthetic rubber to the wire.

Example 13 Hydraulic Hose Covered with Rubber, Reinforced with Wire of Multiple Spirals, of High Impulse, for Heavy Work (SAE 100R13). A hose for use with petroleum-based fluids, within a temperature range of -40 to +121 ° C, and with various water-based hydraulic fluids. A hose, according to this example, may have an oil-resistant, synthetic rubber inner tube, multiple coils of heavy wire spiral, wound in alternate directions, and a synthetic rubber cover, resistant to oil and weathering. A crease or braid of suitable material can be used on or inside the inner tube and / or on the wire reinforcement to anchor the synthetic rubber to the wire.

Example 14 Hydraulic Hose Coated with PTFE (SA 100R14) A hose for use with hydraulic fluids based on petroleum and synthetic, within a temperature range of -54 to + 204 ° C, and with several water-based hydraulic fluids . A hose, according to this example, can have an internal tube of polytetrafluoroethylene (PTFE) reinforced with a single sheet of stainless steel Series 303XXX. Alternatively, such a hose may have a further feature of an electrical conductive surface to prevent the buildup of electrostatic charge.

TABLE - SUM OF MAX SAFE OPERATING PRESSURE SERIES 100R SAE J517 - MPa / psi Nominal Size of D.l. of Hose 100R1 100R2 100R3 100R4 100R5 100R6 100R7 (mm) 3.175 4.763 207 345 103 207 34 207 3000 5000 1500 3000 500 3000 6.35 190 345 86 207 2.8 190 2750 5000 1250 3000 400 2750 172 29.3 8.3 15.5 28 17.2 7. 938 2500 4250 1200 2250 400 2500 9. 525 155 27.6 7.8 2.8 155 2250 4000 1125 400 2250 155 138 10,319 2250 2000 138 12.7 24.1 69 121 2.8 138 2000 3500 1000 1750 400 2000 . 875 10.3 190 6.0 103 2.4 103 1500 2750 875 1500 350 1500 19. 05 15.5 Í1 11 2.1 86 1250 2250 750 300 300 1250 22. 225 78 13.8 5.5 1125 2000 800 25.4 6J3 13.8 3.9 1000 2000 565 250 1000 28. 55 43 625 31.75 43 11.2 2.6 1.4 625 1625 375 200 34.925 34 500 38.1 34 86 10 500 1250 150 6.038 24 350 50.I 2_6 ° -Z 375 1125 100 0.325 2? 350 63.5 63 04 1000 62 76.2 04 1? 56 200 01.6 02 35 TABLE Ib - SAE J517 SERIES 100R HOSE OPERATION MAXIMUM OPERATING PRESSURE - MPa / psi Nominal Size of D.l. of Hose (mm) 100R8 100R9 100R10 100R11 100R12 100R13 100R14 3. 175 10 3 1500 4,763 34.5 68.9 86.2 10.3 5000 10000 12500 1500 6.35 34.5 60.3 77.6 103 5000 8750 11250 1500 7. 938 10.3 1500 9.525 27.6 31.0 51.7 68.9 27.6 10.3 * AHG \ UG \ UG 4500 7500 10000 4000 1500 10,319 6.9 1000 12.7 24.1 27.6 43.1 51.7 27.6 5.5 3500 4000 6250 7500 4000 800 15.875 19.0 27.6 5J > 2750 4000 800 19.05 15.5 20.7 34.5 43.1 27.6 34.5 5.5 3000 5000 6250 4000 5000 800 22.225 5.5 800 25.4 13.8 20.7 27.6 34.5 27.6 34.5 5.5 nnn 3000 4000 5000 4000 5000 800 28.55 4.1 I 600 31.75 17.2 20.7 24.1 207 34.5 2500 3000 3500 3000 5000 34.925 38.1 13.8 17.2 20.7 17.2 34.2 2000 2500 3000 2500 5000 46.038 50.8 13.8 17.2 20.7 17.2 34.5 2000 2500 3000 2500 5000 60.325 63.5 17.2 2500 76.2 101.6 TABLE 2a - SUMMARY OF THE MINIMUM REVENTING PRESSURE OF THE SERIES 100R HOSE J517 - MPa / psi TABLE 2b - SUMMARY OF THE MINIMUM REVENTING PRESSURE OF THE SERIES 100R HOSE J517 - MPa / psi Nominal Size of D.l. of Hose 100R8 100R9 100R10 100R11 100R12 100R13 100R14 (mm) 827 3. 175 12,000 4,763 132.9 275.8 344.7 68.9 20000 40000 50000 10000 132.9 241.3 310.3 62.0 6.35 20000 35000 45000 9000 55.2 7.938 8000 110.3 124.1 206.8 275.8 110.3 48.3 9.525 16000 18000 30000 40000 16000 7000 41.4 10,319 6000 96.5 110.3 172.4 206.8 110.3 41.4 12.7 14000 16000 25000 30000 16000 6000 75.8 110.3 34.5 15.875 11000 16000 5000 62.0 82.7 137.9 172.4 110.3 137.9 27.6 19.05 9000 12000 20000 25000 16000 20000 4000 24.1 22.225 3500 55.2 82.7 110.3 137.9 110.3 137.9 24.1 25.4 8000 12000 16000 20000 16000 20000 3500 17.2 28.55 2500 68.9 82.7 96.5 82.7 137.9 31.75 10000 12,000 14,000 12,000 20,000 34,925 55.2 68.9 82.7 69 0 137.9 38.1 8000 10000 12000 10000 20000 46.038 55.2 68.9 82.7 69.0 137.9 50.8 8000 10000 12000 '10000 20000 60.325 69.0 63.5 10000 76.2 101.6 TABLE 3a - SUMMARY OF THE TEST PRESSURE OF THE HOSE SAE J517 SERIES 100R - MPa / psi TABLE 3B - SAE J517 SERIES 100R HOSE TEST PRESSURE SUMMARY - MPa / psi Nominal Size of D.l. of Hose (mm) 100R8 100R9 100R10 100R11 100R12 100R13 100R14 3. 175 41.4 6000 4.763 68.9 137.9 1724 34.5 10000 20000 25000 5000 6.35 68.9 120.6 155.1 31.0 10000 17500 22500 4500 27.6 7. 938 4000 9.525 55.2 62.0 103.4 137.9 55.2 24.1 8000 9000 15000 20000 8000 3500 20.7 10.319 3000 483 55.2 86.2 103.4 55.2 20.7 12.7 7000 8000 12500 1500 8000 3000 37.9 55.2 17.2 15.875 5500 8000 2500 19.05 31.0 41.4 68.9 86.2 55.2 69.0 13.8 4500 6000 10000 12500 8000 10000 2000 12.2 22.225 1750 27.6 41.4 25.4 55.2 68.9 55.2 69.0 12.1 4000 6000 8000 10000 8000 10000 1750 8.6 28.55 1250 34.5 41.4 48.3 13.8 69.0 31.75 5000 6000 7000 2000 10000 34.925 38.1 27.6 34.5 41.4 34.5 69.0 4000 5000 6000 5000 10000 46.038 50.8 27.6 34.5 41.4 34.5 69.0 4000 5000 6000 5000 10000 60.325 63.5 34.5 5000 76.2 101.6 Example 15 Hydraulic Hose Rubber Cover, Reinforced with Multi-Spiral Wire, High Impulse, Heavy Duty (SAE 100R15). A hose, for use with petroleum-based fluids, within a temperature range of -40 to +121 ° C. A hose, according to this example, may have an oil-resistant rubber inner tube, multiple wire coils of heavy coils wound in alternate directions, and a synthetic weather resistant rubber cover. A crease or braid of suitable material can be used on or inside the inner tube and / or on the wire reinforcement to anchor a synthetic rubber to the wire. The performance specifications for each size of nominal hose ID SAE 100R15 (3/8, 1/2, 3/4, 1, 1-1 / 4 and 1-1 / 2 inches) (9.525, 12.7, 19.05, 28. 575 and 38.1 mm): minimum trapping pressure, 165.5 / 24,000 (MPa / psi); test pressure, 82.7 / 12,000 (MPa, psi); Maximum operating pressure 41.4 / 6,000 (MPa / psi).

Example 16 Hydraulic Hose Rubber Cover, Reinforced with Steel Wire, High Pressure (SAE 100R16). A hose, for use with petroleum-based and water-based hydraulic fluids, within a temperature range of -40 to + 100 ° C. A hose, according to this example, can have an oil-resistant synthetic rubber inner tube, reinforcements of steel wire, according to the design of the hose (one or two braids) and a synthetic rubber cover, resistant to oil and outdoors. A crease or braid of suitable material can be used on the inner tube and / or on the circumference of the wire to anchor the synthetic rubber to the wire. Various performance specifications for such hose are provided below.

Example 17 Hydraulic Hose Covered with Rubber, Reinforced with One and Two Steel Wires, Compact, Maximum Operating Pressure of 21 MPa, with Smallest Bending Radius (SAE 100R17). Hoses of this type are smaller in diameter than hoses with one or two braids with similar performance characteristics, specified in SAE 100R1 and 100R2, which give it the ability to operate at smaller bend radii. They are lighter in weight and their compaction offers advantages when a minimum space is available in the facilities. This hose can be manufactured as a braid or two braid design, and is identified by the number of braids. A hose, according to this example, can have an inner tube of oil-resistant elastomer, a reinforcement of steel wire, according to the design of the hose (one or two braids) and an elastomeric cover resistant to oil and outdoor. A crease or braid of suitable material can be used on the inner tube and / or on the wire reinforcement to anchor the elastomer. A hose of this type has a nominal internal diameter of approximately 6.3 to 25.0 mm, for use with hydraulic fluids based on refined petroleum, a temperature ranging from -40 to 100 ° C. Such a hose is not suitable for use with castor oil based on ester type fluids. Various performance specifications for such hoses are provided below.

Examples 18-27 illustrate hose fittings, according to the invention and of the type that can be used in conjunction with the hoses and / or assemblies described herein.

Example 18 The hydroformed hydraulic hose fitting of this example is a male-type, dry seal-type threaded fitting which can be used in a variety of compatible hoses, including those that meet the design, dimensions, and design specifications. Performance ratings for SAE 100R1-100R13 hydraulic hoses, as is well known to those skilled in the art, and are described more fully in SAE Standards Specifications J517. Such an accessory can be (a) permanently coupled, (b) Screw that can be coupled in the field (c) style of segment clamp, which can be coupled in the field, each of which is more fully described by the design and dimension specifications in Specification J516 of the SAE Standard.

Example 19 The hydroformed hydraulic hose fitting of this example is a threaded, straight, male O-ring flange fitting which can be used in a variety of compatible hoses, including those that meet the dimensional specifications , design and performance for the SAE 100R1, R2, R5, R7-R10 and 100R12 hydraulic hoses, as is well known to those skilled in the art, and are described more fully in the J517 Specifications of the SAE Standards. Such an attachment can be (a) permanently bonded, (b) screw that can be coupled in the field, each of which is more fully described by means of the design and dimensional specifications in Specification J516 of the SAE Standard.

Example 20 The hydroformed hydraulic hose fitting of this example is a 37-degree male flared fitting, which can be used in a variety of compatible hoses, including those that meet the dimensions, design and performance specifications. for S7AE 100R1 - 100R10, 100R12 and 100R13 hydraulic hoses, as is well known to those skilled in the art, and are described more fully in the J517 Specifications of the SAE Standards. Such an attachment can be (a) permanently bonded, (b) of screw that can be coupled in the field or (c) of ethyl segment clamp, which can be coupled in the field, each of which is described more fully by medium of the design and dimensional specifications in Specification J516 of the SAE Standard.

Example 21 The hydroformed hydraulic hose fitting in this example is a 37-degree flared accessory that can be used on a variety of compatible hoses, including those that meet the dimensions, design, and performance specifications for hydraulic hoses. SAE 100R1-100R13, as is well known to those skilled in the art, and are more fully described in Specifications J517 of the SAE Standards. Such an attachment can be (a) permanently attached, (b) screw that can be coupled in the field or (c) of segment bracket that can be coupled in the field, (d) 45 degree angle - flared rotary end of 37 degree radius as an option, (e) permanently coupled with a 45 degree sleeve angle, (e) 45 degree angle that can be coupled in the field, (f) 90 degree short angle drop, permanently attached, (g) short fall angle 90 degrees, adjustable field screw, (h) long fall, 90 degree angle, permanently attached, and long drop, 90 degree angle, screw style that it can be coupled in the field, each of which is described more fully in the design specifications and dimensions in Specification J516 of the SAE Standard.

Example 22 The hydroformed hydraulic hose fitting of this example is a 45 degree flared accessory., male, which can be used in a variety of compatible hoses, including those that meet the dimensions, design and performance specifications for the SAE 100R1, 100R3, and 100R5-100R7 hydraulic hoses, as is well known to the experts in the matter and are described more fully in Specifications J517 of the SAE Standards. Such an attachment can be (a) permanently bonded, (b) of screw that can be coupled in the field, each of which is described more fully by means of the design and dimensional specifications in Specification J516 of the SAE Standard.

Example 23 The hydroformed hydraulic hose fitting of this example is a 45 degree flared, female accessory, which can be used on a variety of compatible hoses, including those that meet the dimensions, design and performance specifications for SAE 100R1, 100R3, 100R5-100R7 hydraulic hoses, as is well known to those skilled in the art, and are more fully described in Specifications J517 of the SAE Standards. Such an attachment can be (a) permanently attached, (b) of screw that can be coupled in the field, (c) of 45 degree angle, permanently attached, (d) 45 degree angle, which can be adjusted in the field, (e) short fall angle 90 degrees, permanently attached, (f) short fall 90 degree angle, adjustable screw in the field , (g) long fall, 90 degree angle, which can be permanently attached and (h) Long fall style, 90 degree angle, field adjustable screw, each, one of which is more fully described by the design and dimensional specifications in Specification J516 of the SAE Standard.

Example 24 The hydroformed hydraulic hose fitting of this example is a male non-flared fitting, which can be used in a variety of compatible hoses, including those that meet the dimensions, design and performance specifications for the hoses. hydraulic SAE 100R1, 100R2, as is well known to those skilled in the art, and are described more fully in Specifications J517 of the SAE Standards. Such an attachment can be (a) permanently bonded, (b) of screw that can be coupled in the field, each of which is more fully described by means of the design and dimensional specifications in Specification J516 of the SAE Standard.

Example 25 The hydroformed hydraulic hose fitting of this example is a non-flared, female fitting, which can be used in a variety of compatible hoses, including those that meet the dimensions, design and performance specifications for the hoses. SAE 10ORI, and 100R2, as is well known to those skilled in the art, and are described more fully in Specifications J517 of the SAE Standards. Such an accessory may be (a) ferrule end construction, optional, preset, (b) permanently attached or (c) screw style that may be coupled in the field, each of which is more fully described by means of of the design and dimensional specifications in Specification J516 of the SAE Standard.

Example 26 The Hydroformed Hydraulic Hose Fitting of this example is a 4-bolt, split flange-type accessory, which can be used on a variety of compatible hoses, including those that meet the specifications of dimensions, design and performance. for SAE 10ORÍ, 100R2, 100R4, 100R5 and 100R9-100R12 hydraulic hoses, as is well known to those skilled in the art, and are more fully described in the Specifications J517 of the SAE Standards. Such an attachment can be (a) permanently attached, (b) of screw that can be coupled in the field, (c) of clamp of adjustable segment in the field, (d) of angle of 22.5 degrees, permanently attached, (e) 22.5 degree angle, adjustable field screw, (f) 22.5 degree angle, adjustable segment clamp in the field, (g) 30 degree angle, permanently attached, (h) angle 30 degrees, adjustable screw in the field, (i) 30 degree angle, adjustable segment clamp in the field, (j) 45 degree angle, permanently attached, (k) 45 degree angle, screw adjustable in the field, (1) 45 degree angle, adjustable segment clamp in the field, () angle of 60 degrees, permanently attached, (n) 60 degree angle, adjustable field screw, (o) 60 degree angle, adjustable segment clamp in the field, (p) 67.5 degree angle, permanently attached (q) 67.5 degree angle, field adjustable screw, (r) 67.5 degree angle, adjustable segment clamp in 90 degree angle field, permanently attached, (t) 90 degree angle, adjustable field screw and (u) 90 degree angle style, field-adjustable segment clamp, each of which is more fully described by means of design specifications and dimensions in J516 Specification the SAE Standard.

Example 27 The hydroformed hydraulic hose fitting of this example is an O-ring face seal female fitting, which can be used on a variety of compatible hoses, including those that meet the dimensions, design specifications and performance for SAE 100R1, 100R12 hydraulic hoses as is well known to those skilled in the art, and are described more fully in Specifications J517 of the SAE Standards. Such an attachment can be (a) permanently attached, (b) of screw that can be coupled in the field, (c) of 45 degree angle, permanently attached, (d) of 45 degree angle, adjustable screw in the field , (e) short fall angle, 90 degrees, permanently attached, (f) short fall angle, 90 degrees, adjustable field screw, (g) long drop 90 degrees, permanently attached and (h) long fall style, 90 degree, field adjustable screw, each of which is more fully described by means of the design specifications and dimensions in Specification J516 of the SAE Standard. While the principles of this invention have been described in relation to specific modalities, it should be clearly understood that these descriptions, together with the chosen examples, figures, tables and data contained therein, are made in the form of illustration only and are not intended to limit the scope of this invention in some way. For example, the systems and methods of this invention can be adapted in a direct manner to supply the manufacture of fuel / oil hose fittings and assemblies, in accordance with SAE Standard J30. Similarly, various specifications of dimensions, design and performance have been mentioned in conjunction with the SAE standards, the present invention can also be applied with respect to any corresponding international specification used industrially in other jurisdictions, which can fulfill an equal effect and which will be considered with the present invention. Other advantages and features of the invention will become apparent from the following claims, with their scope determined by reasonable equivalents, as will be understood by those skilled in the art.

Claims (18)

1. A hose assembly, comprising a unitary hydroformed metal hose fitting, this accessory has substantially no brass welds and no machine lining; and a hose, functionally and dimensionally compatible with the hose fitting, this hose corresponds to the hose fitting and is engaged by means of tines.

2. The assembly of claim 1, wherein the hose fitting further has at least one hydroformed portion, for attachment of the safety mechanism.

3. The assembly of claim 2, further including a mechanism for securing the hose to the fitting.

4. The assembly of claim 3, wherein the mechanism is selected from the group consisting of a ferrule and a clamp.

5. The assembly of claim 1, wherein the hose fitting has dimensions and performance properties selected from the group consisting of: the dimensions and performance properties that meet the specifications of the SAE J516 standard, for hydraulic hose fittings; and properties of dimensions and performance, equivalent to the specifications of SAE J516 standard for hydraulic hose accessories.

6. The assembly of claim 5, wherein the hose has dimensions and performance properties, selected from the group consisting of: the dimensions and performance properties that meet the specifications of the SAE J517 standard, for hydraulic hose fittings; and properties of dimensions and performance, equivalent to the specifications of the SAE J517 standard for hydraulic hose accessories.

7. The assembly of claim 1, wherein the compatibility of the hose and the hose fitting, is in accordance with practice J1273 recommended by SAE.

8. The assembly of claim 1, wherein the plurality of barbs is selected from the group consisting of circumferential edges, squares, ribbons and combinations thereof.

9. The assembly of claim 8, wherein the hose fitting has a uniform wall thickness dimension.

10. In a hydroforming system, the improvement comprising a first and second opposed dies, which are removably coupled together and which define a cavity for the placement of a tubular material, the first punch has at least one concave portion and the second die has at least one other concave portion, these concave portions are arranged to define the cavity having the design and the external diameter dimensions of a hose fitting.

11. The system of claim 10 wherein the cavity has a design and dimensions selected from the group of properties, which meet the specifications of the SAE J516 standard for hydraulic hose fittings, and properties equivalent to the specifications of the SAE J516 standard, for the hydraulic hose accessories.

12. The system of claim 10 wherein the cavity has a concave portion, for supplying a hose fitting, which can be coupled with a ferrule.

13. The system of claim 10 wherein the cavity has a concave portion, for supplying at least one barb of the hose.

14. A method for using a die to make a hose fitting, this accessory has a configuration suitable for use with a hose assembly, this method comprises: supplying a metal tube; Supply a die tool to attach the tube, this tool defines a configured cavity; to put the inside of the tube in contact with an expansive material and to retain this material inside the tube; increase the pressure of the material inside the tube to a predetermined level, this pressure is sufficient for the flow of the metal; and coupling the tube with the die tool, to form a hose fitting.

15. The method of claim 14, wherein the coupling of the tool with the tube supplies a hose fitting with a predetermined outer diameter design and dimensions.

16. The method of claim 15, wherein the coupling provides a design and dimensions selected from the group of properties that meet the specifications of SA J516 standard for hydraulic hose fittings, and properties equivalent to the specifications of the SAE J516 standard for accessories of hydraulic hoses.

17. The method of claim 14, wherein the coupling forms a dimensional configuration for a corresponding relationship with a ferrule.

18. The method of claim 14, wherein the expansive material is selected from the group consisting of a hydraulic fluid, a urethane and an explosive.