Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
  • B60T17/08—Brake cylinders other than ultimate actuators
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
  • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
  • F16B35/041—Specially-shaped shafts
  • F16B35/048—Specially-shaped necks
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B37/00—Nuts or like thread-engaging members
  • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
  • F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
  • F16B37/062—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting
  • F16B37/068—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting by deforming the material of the support, e.g. the sheet or plate
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49826—Assembling or joining
  • Y10T29/49908—Joining by deforming

Definitions

• the invention relates to a method for mounting fastening screws on the bottom of a brake cylinder according to the preamble of patent claim 1, as well as a brake cylinder produced by the method.
• brake cylinders must be securely fastened to the axle of a vehicle in order to exert a force on the actual brake. This is generally done by screws which are fastened to and protrude from the bottom of the brake cylinder. With the help of these screws and nuts is the brake cylinder on a part of the axis, z. B. a mounting plate, screwed. Because of the strong forces that occur during a brake application, the screw connection must meet high mechanical requirements.
• the bottom of a brake cylinder has a plurality of holes for fastening screws.
• the screws are inserted from the inside through these holes and protrude outward.
• they are welded from the inside to the bottom of the brake cylinder.
• the screw heads are formed asymmetrically.
• the known welding is a relatively complicated process, which makes the mass component brake cylinder more expensive.
• the invention is therefore an object of the invention to provide a method for mounting the mounting screws, which meets the above mechanical requirements, but cheaper fails.
• Fig. 1 is an overall view of a brake cylinder with fastened according to the invention screws in cross section;
• Figure 2 is a fastening screw in section with molded groove.
• FIG 3 shows the bottom of the brake cylinder with adjacent external embossing tool.
• Figure 5 shows a through the expanded bore from the inside pushed through 'fastening screw.
• Fig. 8 is a fastening screw with molded grooved area Fig. 9, the fixed mounting screw with deformed collar
• Fig. 10 shows a detail of Fig. 9 in the region of the corrugation
• Fig. 1 the bottom of the brake cylinder with adjacent internal embossing tool
• Fig. 12 shows the bottom of the brake cylinder with outwardly widened bore
• Fig. 14 shows the process of recovery by pressure on the collar
• the brake cylinder (1) shows a brake cylinder (1) with two fastening screws (2, 3) fastened according to the method according to the invention.
• the brake cylinder (1) consists of two parts fastened together, namely a bottom (5) and a cover (6).
• the lid (6) has a connection (4) for introducing the actuating means, for example compressed air.
• a piston rod (7) for actuating the actual brake (not shown) is moved out.
• the piston rod (7) is connected inside the brake cylinder (1) to a piston (not shown).
• one of the fastening screws (2, 3) is shown in more detail. As usual, it consists of a head (13) and a threaded part (14). Adjacent to the head (13) has a groove (12) is formed in the threaded portion (14). The threaded part (14) has a diameter B. The groove (12) has a diameter A which is smaller than the diameter B.
• Fig. 3 shows the bottom (5) of the brake cylinder (1), which is provided in a known manner with holes (8). There may be two bores or else further, at the bottom of the brake cylinder (5) annularly distributed holes.
• the bore (8) has expedient the diameter A, that is the same diameter as the groove (12) of the screw (2). However, it can also be a smaller diameter than A for the holes (8) can be selected.
• the bore (8) is first widened according to the inventive method.
• the brake cylinder by an annular holding tool (not shown), which exerts a force on the circumference of the bore (8) in the direction of the arrows (16), held from the inside.
• Fig. 8 shows a variant of the fastening screw (2).
• a corrugated area (15) is provided.
• the corrugations go around the screw body in a ring shape. But they can also be different, e.g. diagonal, be formed.
• the screw (2) has the diameter A.
• Fig. 10 is shown in more detail, as it forms the corrugation of the screw (2) in the edge of the bore (8).
• the material of the screw (2) is harder than that of the brake cylinder bottom (5).
• FIGS. 11 to 14 show a variant of the method according to the invention, wherein the embossing tool (9) does not act from the inside, but from the outside.
• FIG. 11 shows the brake cylinder bottom (5) with an embossing tool (9), which is pressed with a force in the direction of the arrow (10) from the inside against the brake cylinder bottom (5) with the bore (8).
• the bottom (5) is held from the outside with an annular holding tool (not shown), which exerts a force in the direction of the arrows (16) in the region of the bore (8) on the bottom (5).
• the output diameter of the bore (8) is equal to or less than A.
• FIG. 12 shows how a collar (11), this time outward, has formed due to the force of the embossing tool (9).
• the diameter of the bore (8) has thereby been widened to a diameter greater than the diameter B of the threaded part (14) of the screw (2).
• the embossing process of the brake cylinder bottom (5) can be done individually or for all holes (8) together.
• the brake cylinder (1) can be subsequently painted.
• the paint penetrates into an approximately remaining gap between the groove (12) or corrugation (15) and collar (11) and seals it thus additionally.
• a wading capability of the vehicle equipped with the brake cylinder (1) can be established.
• the threaded part (14) of the fastening screws (2, 3) must be covered during the painting process.
• the head (13) of the screws can additionally be made asymmetrical in a known manner (not shown).
• the asymmetric screw head (13) to the Inner wall of the bottom (5) of the cylinder (1) ensures a positive engagement and thus a security against rotation of the screws (see DE 34 04 014 A1).

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Braking Arrangements (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=40176005

Family Applications (1)

Country Status (6)

Families Citing this family (1)

Family Cites Families (10)

• 2007
  • 2007-08-20 DE DE102007039204A patent/DE102007039204A1/de not_active Withdrawn
• 2008
  • 2008-06-30 WO PCT/EP2008/005337 patent/WO2009018880A1/de active Application Filing
  • 2008-06-30 RU RU2010107623/11A patent/RU2470806C2/ru not_active IP Right Cessation
  • 2008-06-30 EP EP08759362A patent/EP2185393A1/de not_active Withdrawn
  • 2008-06-30 CN CN200880100911.4A patent/CN101765529B/zh not_active Expired - Fee Related
  • 2008-06-30 US US12/452,886 patent/US20100192767A1/en not_active Abandoned

Non-Patent Citations (1)

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