WO1999025506A1 - Method and device for producing an integral housing for a hydraulic steering gear - Google Patents
Method and device for producing an integral housing for a hydraulic steering gear Download PDFInfo
- Publication number
- WO1999025506A1 WO1999025506A1 PCT/DE1998/003421 DE9803421W WO9925506A1 WO 1999025506 A1 WO1999025506 A1 WO 1999025506A1 DE 9803421 W DE9803421 W DE 9803421W WO 9925506 A1 WO9925506 A1 WO 9925506A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- die
- internal high
- ring
- high pressure
- hollow profile
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
- B21C37/29—Making branched pieces, e.g. T-pieces
- B21C37/294—Forming collars by compressing a fluid or a yieldable or resilient mass in the tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/025—Stamping using rigid devices or tools for tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/047—Mould construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
- B21D35/006—Blanks having varying thickness, e.g. tailored blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
Definitions
- the invention relates to a method for producing an integral housing for hydraulic steering systems according to the preamble of claim 1.
- This housing consists of a cylinder tube with welded socket for the hydraulic lines and a housing part for receiving the steering gear and hydraulic control valve.
- the cylinder tube is usually made from a tube that is formed and / or processed. Spigots and / or retaining plates are attached to it.
- the housing part is usually made of cast aluminum.
- the object of the invention is to provide a method for producing an integral housing for hydraulic steering systems, with which, while maintaining the advantages of an integral housing, it has a lower weight and less installation space and can be produced in a shorter manufacturing time. This object is achieved on the basis of the preamble in conjunction with the characterizing features of claim 1.
- Advantageous refinements and a device for carrying out the method are part of subclaims
- Manufacturing time for the manufacture of an integral housing can be shortened. Since the integral housing has no joints, the overall rigidity is higher and no additional sealing is required
- the device used to carry out the method has an annular joint element which is arranged in the end region of the die and is subdivided by radially extending webs. This interacts with a further annular joint element connected to the feed unit and having tongue-like elements.
- the ring joint can be closed continuously by the interaction of the two ring joint elements.
- This arrangement is of essential importance for the controlled axial feeding of material, since it allows the sealing point to move along and the subdivided annular joint has sufficient support over the webs, so that the material of the hollow profile under high internal pressure does not enter the gaps between the webs of the annular joint element can flow.
- the sealing point itself is formed by the previously mentioned ring and a mandrel fastened to the feed unit and insertable into the hollow profile.
- the ring has an inner contour that is adapted to the mandrel.
- an inverted drawing unit is arranged in the region of the die which is subjected to internal high pressure. This has a piston which is displaceable in a recess in the die. The piston is preferably displaced transversely to the longitudinal axis of the hollow profile.
- the piston of the everting unit can be surrounded by an annular piston.
- the ring piston can be displaced independently of the piston.
- the mandrel cooperating with the ring has a head section and an adjoining or separate transition section to which a tension or tension-compression element with a smaller diameter is fastened.
- the tension-compression element is preferably designed as a rod.
- the tongue-like elements extending axially from the ring are positioned circumferentially so that they are exactly opposite gaps between the webs of the ring joint element.
- FIG. 2 shows a section AA in FIG. 1
- FIG. 1 shows a device designed according to the invention for carrying out the method in a longitudinal section and in FIG. 2 in a cross section.
- the essential elements of this device are a die consisting of two die halves 1, 2. In the end face region of the die on the right here, an annular joint element divided with radially extending webs 30, 31 (FIG. 2) is arranged in each die half 1, 2.
- the ring joint element can be formed as an integral part of the respective die half 1, 2 or as a separate insert.
- a ring 5 is operatively connected to this ring joint element, from which tongues 6 (FIG. 2) extend axially, the tongues 6 forming a further ring joint element which are complementary to the gaps between the webs 30, 31.
- the dashed line lying further to the left in the figure is intended to indicate the axial end of the webs 30, 31 as the invisible body edge and the dashed line lying further to the right in the picture is intended to indicate the axial start of the tongues 6 as the invisible body edge.
- the ring 5 is connected to a clamping and feed unit 9, for example via rods 7, 8.
- a rod 12 is fastened in the middle to the clamping and feed unit 9, the front end region of which is connected to a mandrel 21.
- the mandrel 21 has a cylindrically shaped head section 10 and a transition section 11, which is connected to the rod 12.
- an everting unit 14 is arranged in a recess 13 of the lower die half 2.
- the method according to the invention for producing an integral housing for hydraulic steering has the following working steps
- a hollow profile 17 is inserted into the die having two die halves 1, 2 and the die is closed by means of a press (not shown here).
- the open end of the hollow profile 17 on the left here is closed by the insertion of the sealing stamp 18.
- the right side is not at the end , but sealed further inside
- the mandrel 21 is inserted into the hollow profile 17 by means of the clamping and feed unit 9.
- the right end region of the hollow profile 17 is drawn in by inserting the ring 5.
- the ring 5 has a corresponding inner contour. The movement of the ring 5 is independent of the movement of the dome 21 By slightly pulling the dome 21 against the formed shoulder 22, the required sealing is achieved on this side.
- the cavity 19 of the hollow profile 17 is filled with a fluid via the bore 20 of the sealing stamp 18.
- Forming process with controlled m the axial shaping of the intended shaping of the hollow profile 17 With dashed lines the shaping of the bulge 23 in the upper die half 1 is indicated.
- the axial feeding of the material can take place via the sealing stamp 18 and / or by means of the movable mandrel-21 ring 5-sealing the same clamping, the faceplate pulling unit 14 produces the desired formation of a branch.
- the sealing pretension between mandrel 21 and ring 5 is reduced by slightly pushing the dome 21 forward.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98965585A EP1030752A1 (en) | 1997-11-14 | 1998-11-12 | Method and device for producing an integral housing for a hydraulic steering gear |
JP2000520929A JP2001523576A (en) | 1997-11-14 | 1998-11-12 | Method and apparatus for manufacturing an integrated casing for hydraulic steering |
AU21486/99A AU2148699A (en) | 1997-11-14 | 1998-11-12 | Method and device for producing an integral housing for a hydraulic steering gear |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997151408 DE19751408C2 (en) | 1997-11-14 | 1997-11-14 | Method and device for producing an integral housing for hydraulic steering |
DE19751408.1 | 1997-11-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999025506A1 true WO1999025506A1 (en) | 1999-05-27 |
Family
ID=7849289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1998/003421 WO1999025506A1 (en) | 1997-11-14 | 1998-11-12 | Method and device for producing an integral housing for a hydraulic steering gear |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1030752A1 (en) |
JP (1) | JP2001523576A (en) |
AU (1) | AU2148699A (en) |
DE (1) | DE19751408C2 (en) |
WO (1) | WO1999025506A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7946146B2 (en) | 2006-10-02 | 2011-05-24 | Fachhochschule Koeln | Hydroforming apparatus |
US8141404B2 (en) | 2001-04-04 | 2012-03-27 | Arcelormittal Tubular Products Canada Inc. | Method of manufacturing structural components from tube blanks of variable wall thickness |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10033305C2 (en) * | 2000-07-04 | 2003-05-28 | Schmittersysco Gmbh | Method of manufacturing rack and pinion steering housings |
WO2006100261A1 (en) | 2005-03-24 | 2006-09-28 | Schmittergroup Ag | Rack-and-pinion steering with lines welded thereto |
DE102005057810A1 (en) * | 2005-12-03 | 2007-06-06 | Zf Friedrichshafen Ag | Method for manufacturing gearbox housings for vehicles uses hydroforming to shape extrusion moulded profiles into housing |
DE102013012587A1 (en) * | 2013-07-30 | 2014-12-11 | Daimler Ag | Method for producing a baffle and baffle |
CN103639666B (en) * | 2013-12-04 | 2016-07-06 | 鞠小平 | A kind of processing method of front shell of differential |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH295158A (en) * | 1950-09-18 | 1953-12-15 | Ici Ltd | Method and device for the production of pipe fittings. |
JPS63273525A (en) * | 1987-04-30 | 1988-11-10 | Kokan Kako Kk | Bulging method for long pipe material |
DE4201730A1 (en) * | 1992-01-23 | 1993-07-29 | Teves Gmbh Alfred | Servo-assisted rack and pinion steering for vehicle - has integral, pressure moulded steel housing for steering mechanism and servo-piston. |
EP0758565A1 (en) * | 1995-08-16 | 1997-02-19 | Schäfer Hydroforming GmbH & Co. | Process and apparatus for realising perforations through double walls of structural members by the internal pressure forming method and a herewith manufactured transversal oscillating lever |
DE19653463A1 (en) * | 1996-12-20 | 1998-07-02 | Daimler Benz Ag | Method of forming protrusions on long hollow sections |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4237485B4 (en) * | 1992-11-06 | 2006-08-31 | Zf Friedrichshafen Ag | Rack and pinion power steering, in particular for motor vehicles |
-
1997
- 1997-11-14 DE DE1997151408 patent/DE19751408C2/en not_active Expired - Fee Related
-
1998
- 1998-11-12 JP JP2000520929A patent/JP2001523576A/en active Pending
- 1998-11-12 EP EP98965585A patent/EP1030752A1/en not_active Ceased
- 1998-11-12 AU AU21486/99A patent/AU2148699A/en not_active Abandoned
- 1998-11-12 WO PCT/DE1998/003421 patent/WO1999025506A1/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH295158A (en) * | 1950-09-18 | 1953-12-15 | Ici Ltd | Method and device for the production of pipe fittings. |
JPS63273525A (en) * | 1987-04-30 | 1988-11-10 | Kokan Kako Kk | Bulging method for long pipe material |
DE4201730A1 (en) * | 1992-01-23 | 1993-07-29 | Teves Gmbh Alfred | Servo-assisted rack and pinion steering for vehicle - has integral, pressure moulded steel housing for steering mechanism and servo-piston. |
EP0758565A1 (en) * | 1995-08-16 | 1997-02-19 | Schäfer Hydroforming GmbH & Co. | Process and apparatus for realising perforations through double walls of structural members by the internal pressure forming method and a herewith manufactured transversal oscillating lever |
DE19653463A1 (en) * | 1996-12-20 | 1998-07-02 | Daimler Benz Ag | Method of forming protrusions on long hollow sections |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 013, no. 076 (M - 800) 21 February 1989 (1989-02-21) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8141404B2 (en) | 2001-04-04 | 2012-03-27 | Arcelormittal Tubular Products Canada Inc. | Method of manufacturing structural components from tube blanks of variable wall thickness |
US7946146B2 (en) | 2006-10-02 | 2011-05-24 | Fachhochschule Koeln | Hydroforming apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE19751408A1 (en) | 1999-06-02 |
EP1030752A1 (en) | 2000-08-30 |
JP2001523576A (en) | 2001-11-27 |
DE19751408C2 (en) | 1999-10-21 |
AU2148699A (en) | 1999-06-07 |
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