Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
  • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
  • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
  • F04B27/0878—Pistons
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
  • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
  • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
  • F04B27/0878—Pistons
  • F04B27/0882—Pistons piston shoe retaining means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
  • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
  • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
  • F04B27/0878—Pistons
  • F04B27/0886—Piston shoes
• • 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
  • Y10T29/49229—Prime mover or fluid pump making
  • Y10T29/49249—Piston making
  • Y10T29/49252—Multi-element piston making

Definitions

• the invention relates to an axial piston machine, in particular an air conditioning compressor for motor vehicles, having at least one piston with a substantially cylindrical piston skirt and with a wrap around, which surrounds a pivot ring or a swash plate and on this swivel ring or this swash plate sliding piston shoes.
• the invention further relates to a method for producing a piston of an axial piston machine.
• an axial piston machine in particular an air conditioning compressor for motor vehicles, with at least one piston with a substantially cylindrical piston skirt and with a wrap around which surrounds a pivot ring or a swash plate and on this swivel ring or this swash plate sliding piston shoes, wherein in the wrapper separate holding element is arranged, which has a kugelkalottenförmige recess for one of the piston shoes.
• Preferred is an axial piston machine in which the separate holding element is adjustable / positionable relative to the handle.
• An axial piston machine according to the invention is characterized in that the holding element is adjustable relative to the handle by means of a self-locking screw connection.
• the holding element is adjustable relative to the handle by means of a self-locking screw connection.
• an axial piston machine is preferred in which the wraparound has a circular opening for receiving the cylindrical piston shaft.
• the multi-part design of the entire piston since, for example, the cylindrical piston skirt can be produced in a deep-drawing process and the embracing in a punch bending process and thus the manufacturing process of the shape of the individual parts can be adjusted.
• an axial piston machine is preferred, in which the cylindrical piston shaft has a pot and a lid.
• the production of the individual parts can be optimized with the corresponding different methods.
• An axial piston machine is characterized in that the pot has a second spherical cap recess of the piston for the other piston shoe. Due to the open pot shape as a single part can thus be formed in the deep-drawing process, the spherical cap-shaped depression without much manufacturing effort.
• an axial piston machine in which the cover has at least one piston ring groove.
• a manufacturing process for producing a relatively flat cover component is again optimal to incorporate a corresponding piston ring groove in this component.
• an axial piston machine is preferred in which the wraparound, the holding element, the pot and the lid are made of a steel material.
• the steel material has especially compared to known from the prior art aluminum materials higher strength and a better wear behavior and allows thin-walled components.
• an axial piston machine in which the wraparound, the pot, the lid and optionally the holding element are laser welded together, wherein the pot has an opening inside the spherical cap-shaped depression, for example for cleaning after welding and grinding.
• a method for producing a piston of an axial piston machine in particular an air conditioning compressor for motor vehicles, with at least one piston with a substantially cylindrical piston skirt and with a wrap around which surrounds a pivot ring or a swash plate and on this swivel ring or this swash plate sliding piston shoes, is preferred wherein a first piston shoe is inserted into the spherical cap of the pot, the swivel ring or the swash plate is inserted into the gripping over the first piston shoe, the second piston shoe is inserted on the swivel ring or the swash plate within the Umgriffe, the holding element through the opening in the Umgriff is introduced and brought against the second piston shoe in abutment and the holding element is fixed in this investment position on the handle, preferably by fastening methods such as a self-locking thread or a press fit, but possibly also by a e welded joint or an adhesive bond.
• fastening methods such as a self-locking thread or a press fit, but
• FIG. 1 shows the piston pot
• Figure 2 shows the piston pot with the lid.
• Figure 3 shows the piston pot with lid and wrapper.
• Figure 4 shows the piston pot with lid, handle and the first piston shoe.
• Figure 5 shows the piston pot with lid, wrapper, first piston shoe and a part of the pivot ring.
• Figure 6 shows the piston pot with lid, wrap, first piston shoe, a part of the pivot ring and the second piston shoe.
• Figure 7 shows the entire piston assembly after insertion of the retaining element.
• FIG. 8 shows an alternative embodiment of the retaining element made of deep-drawn sheet metal.
• piston pot 1 the cylindrical part of the piston, also referred to as piston pot 1, shown in cross section.
• the pot 1 has at its bottom a finished embossed spherical cap 3, which is broken by a circular opening 5.
• the cylindrical piston pot 1 can be made in this form, for example, by a deep drawing of sheet steel.
• a lid member 7 is added to the piston pot, which has a circumferential groove 9 for receiving a piston ring.
• several piston grooves are incorporated into the cover 7.
• the flat plate-like design of this construction part is again very well suited for the production by a sheet metal forming process.
• the lid 7 is placed on the pot 1 and can be connected in the region 11, for example by a laser weld with the pot 1.
• the Umgriff 13 is essentially a U-shaped stamped and bent part having an opening 15 which can receive the piston pot 1, and an opening 17 into which the holding element is inserted later.
• the pot 1 can be connected to the Umgriff 13 in the region 19 of the opening 15, for example, also by a laser weld.
• the invention thus represents the assembly of a Klimakompressorkolbens, consisting of a pot 1 with pre-embossed spherical cap 3, further comprising a cover 7 with a piston ring groove 9, a bow-shaped handle 13 and a holding segment 27.
• the method to one hand the pot 1 with the Cover 7 and on the other hand to connect the pot 1 with the bow-shaped Umgriff 13, can be selected differently according to the desired benefits.
• laser welding will preferably be used since large forces must also be absorbed by the piston during compression work.
• the connection of the bow-shaped wrap-around 13 with the holding member 27 may possibly be interpreted from other points of view. For example, a screw is conceivable, by which the game can be adjusted accordingly and also readjusted. A self-locking screw connection prevents loosening of the screw connection during operation.
• FIG. 8 shows a variant with another holding segment 31, which here is for example also a deep-drawn sheet metal part.
• the holding element 31 is inserted in a collar-shaped deformation 29 of the bow-shaped wrap-around 13 and can play free Assembly against the piston shoes, as indicated here by the piston shoe 25, are fixed in the regions 32 by a laser weld.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
• Compressor (AREA)
• Pistons, Piston Rings, And Cylinders (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=36587142

Family Applications (1)

Country Status (7)

Families Citing this family (1)

Family Cites Families (14)

• 2006
  • 2006-03-31 DE DE502006002752T patent/DE502006002752D1/de not_active Expired - Lifetime
  • 2006-03-31 AT AT06722728T patent/ATE422028T1/de not_active IP Right Cessation
  • 2006-03-31 CN CN2006800137652A patent/CN101163882B/zh not_active Expired - Fee Related
  • 2006-03-31 EP EP06722728A patent/EP1877663B1/fr not_active Expired - Lifetime
  • 2006-03-31 US US11/919,089 patent/US20090035155A1/en not_active Abandoned
  • 2006-03-31 JP JP2008506912A patent/JP2008538803A/ja active Pending
  • 2006-03-31 WO PCT/DE2006/000577 patent/WO2006114073A1/fr not_active Ceased
  • 2006-03-31 DE DE112006001754T patent/DE112006001754A5/de not_active Withdrawn

Non-Patent Citations (1)

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