JPH046553U

JPH046553U -

Info

Publication number: JPH046553U
Application number: JP4444490U
Authority: JP
Priority date: 1990-04-25
Filing date: 1990-04-25
Publication date: 1992-01-21

Description

[Brief explanation of drawings]

第１図〜第６図は本考案に係るピストン構造の
一実施例を示すものであつて、第１図はリング溝
がなく外周面が中仕上げ機械加工まで施された状
態のピストンの正面図、第２図はビニルテープ等
でマスキングした状態のピストンの正面図、第３
図はピストンヘツド面に分散メツキを施した状態
のピストンの断面図、第４図はネイバロの加工セ
ンタを利用してリング溝加工およびピストン外周
面の仕上げ機械加工を施した状態のピストンの断
面図、第５図はピストンヘツド面からネイバロを
研削除去した最終製品たるピストンの断面図、第
６図はその平面図、第７図〜第１１図は上記実施
例におけるネイバロに設けた周溝の変形例を示す
ものであつて、第７図は断面半円弧状の周溝を設
けたネイバロの断面図、第８図は断面横Ｖ字形状
の周溝を設けたネイバロの断面図、第９図は断面
長方形状の周溝を設けたネイバロの断面図、第１
０図は断面正方形状と断面半円弧形状とを組合せ
た形状の周溝を設けたネイバロの断面図、第１１
図は断面正方形状と断面横Ｖ字形状とを組合せた
形状の周溝を設けたネイバロの断面図、第１２図
は分散メツキ前の従来のピストンを示す正面図、
第１３図はリング溝がなく外周面が中仕上げ機械
加工まで施された状態にある従来のネイバロ付ピ
ストンを示す正面図である。１……ピストン、２……ピストンヘツド、３…
…加工センタ、４……ネイバロ、５……ピストン
外周面、６……周溝、７……ビニルテープ、８…
…塗膜、９……分散メツキ被膜、１０……リング
溝、１１……最終製品のピストン。 Figures 1 to 6 show an embodiment of the piston structure according to the present invention, and Figure 1 is a front view of the piston with no ring groove and the outer peripheral surface has been subjected to semi-finishing machining. , Figure 2 is a front view of the piston masked with vinyl tape, etc., Figure 3 is a front view of the piston masked with vinyl tape, etc.
The figure is a cross-sectional view of a piston with distributed plating applied to the piston head surface, and Figure 4 is a cross-sectional view of a piston with ring groove machining and finish machining of the piston outer circumferential surface performed using Neivarro's machining center. , Fig. 5 is a sectional view of the piston as the final product after removing the Neivaro from the piston head surface by grinding, Fig. 6 is a plan view thereof, and Figs. 7 to 11 show deformations of the circumferential groove provided in the Neivaro in the above embodiment. Fig. 7 is a cross-sectional view of a Neivaro with a circumferential groove having a semicircular arc shape in cross section, Fig. 8 is a cross-sectional view of a Neivaro with a circumferential groove having a horizontal V-shaped cross section, and Fig. 9 is a cross-sectional view of Neivaro with a circumferential groove having a rectangular cross section, the first
Figure 0 is a cross-sectional view of Neivaro with a circumferential groove having a combination of a square cross section and a semicircular arc cross section, No. 11.
The figure is a cross-sectional view of a Neivaro equipped with a circumferential groove having a combination of a square cross-section and a transverse V-shape cross-section, and Fig. 12 is a front view showing a conventional piston before dispersion plating.
FIG. 13 is a front view showing a conventional piston with a neutral ring without a ring groove and whose outer circumferential surface has been subjected to semi-finish machining. 1... Piston, 2... Piston head, 3...
...Machining center, 4...Neighborhood, 5...Piston outer peripheral surface, 6...Circumferential groove, 7...Vinyl tape, 8...
... Paint film, 9 ... Dispersed plating film, 10 ... Ring groove, 11 ... Piston of final product.

Claims

[Scope of utility model registration request]

A protrusion with a machining center is provided on the piston head surface, while semi-finishing machining is performed on the outer peripheral surface of the piston where no ring groove is provided.
The protrusions and the outer peripheral surface of the piston are masked with paint, vinyl tape, etc., and in this state, a dispersion material having heat resistance, heat insulation, etc. is applied to the piston head surface. In a piston structure in distributed plating of a piston, in which the masking is removed and the machining center of the protrusion is then used to perform ring groove machining and finish machining on the outer peripheral surface of the piston, the outer surface of the lower part of the protrusion facing the piston head surface is A piston structure for distributed plating of a piston, characterized in that a circumferential groove extending in a radial direction is provided on a side surface.