Swash plate and production method of the same

Patent metadata

Field	Value
Publication number	US-9657818-B2
Application number	US-201414227446-A
Country	US
Kind code	B2
Filing date	Mar 27, 2014
Priority date	Dec 25, 2008
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

A swash plate 3 includes a substrate 11 made of an iron-based material, a hard first resin layer 12 provided to coat an end surface of the substrate 11 , and a soft second resin layer 13 provided to coat the first resin layer 12 . A spiral annular groove 12 A is formed in a surface of the first resin layer 12 , and the second resin layer 13 is provided to match the sectional shape of the first resin layer 12 . With the soft second resin layer 13 on a sliding surface 3 A of the swash plate 3 , a swash plate 3 having a good fit in an initial stage of sliding can be provided. When the second resin layer 13 partially wears, a protrusion 12 of the first resin layer 12 of the hard resin is exposed to provide good wear resistance and good sliding properties.

First claim

What is claimed is:

1. A method of producing a swash plate ( 3 ) having a sliding surface ( 3 B) that slides with respect to a shoe ( 4 ), comprising the steps of:
providing a substrate ( 11 ) comprising an iron-, aluminum- or copper-based material;
applying a first resin paint composed of hard resin to an end surface of the substrate to form a first resin layer ( 12 );
drying or baking the first resin layer ( 12 ) and then forming a minute annular groove ( 12 A) in a surface of the first resin layer ( 12 );
applying a second resin paint composed of soft resin to the first resin layer ( 12 ) provided with the annular groove ( 12 A);
rotating the substrate ( 11 ) at a high speed to remove unnecessary parts of the resin paint for a second resin layer ( 13 ); and
shaping the second resin layer ( 13 ) to match a sectional shape of the surface of the first resin layer ( 12 ).

2. The method according to claim 1 , wherein a thickness of a protrusion ( 12 B) of the annular groove ( 12 A) in the first resin layer ( 12 ) is larger than a thickness of the second resin layer ( 13 ).

3. The method according to claim 2 , wherein a thickness B of the second resin layer ( 13 ) covering the protrusion ( 12 B) of the annular groove ( 12 A) in the first resin layer ( 12 ) and a thickness A of a portion of the second resin layer ( 13 ) coating a recess ( 12 C) of the annular groove ( 12 A) have a size relationship of 3/2A≧B.

4. The method according to claim 3 , wherein the first resin layer ( 12 ) is a thermosetting resin binder to which at least one of graphite, carbon, MoS 2 and PTFE is added, and
the second resin layer ( 13 ) is a thermosetting resin binder to which at least one of MoS 2 and PTFE is added.

5. The method according to claim 1 , wherein the first resin layer ( 12 ) has a thickness of 3-70 μm and the second resin layer ( 13 ) has a thickness of 1-40 μm.

6. The method according to claim 5 , wherein the first resin layer ( 12 ) has a thickness of 5-50 μm and the second resin layer ( 13 ) has a thickness of 3-10 μm.

Assignees

• Akizuki Masanori
• Gotou Shingo
• Kanemitsu Hiroshi
• Taiho Kogyo Co Ltd

Inventors

• Akizuki Masanori
• Gotou Shingo
• Kanemitsu Hiroshi

Classifications

• B05D1/38

  with intermediate treatment (intermediate treatment per se B05D3/00) · CPC title

• F16H23/00 Primary

  Wobble-plate gearings; Oblique-crank gearings · CPC title

• F05C2201/0475

  Copper or alloys thereof · CPC title

• F05C2201/0436

  Iron · CPC title

• F05C2201/021

  Aluminium · CPC title