JPS6295853U

JPS6295853U -

Info

Publication number: JPS6295853U
Application number: JP18746985U
Authority: JP
Priority date: 1985-12-05
Filing date: 1985-12-05
Publication date: 1987-06-18
Also published as: JPH0357410Y2

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図はシユー
センタレスタイプの研削盤を概略的に示す全体構
成図、第２図は保持装置の拡大縦断側面図、第３
図は第２図の―線における拡大断面図、第４
図はプレツシヤプレートのワークに作用する圧力
特性を砥石の切込み特性と関連して示す特性図で
ある。４……主軸、４ａ……パーキングプレート、１
１……保持装置、１２……プレツシヤプレート、
１３……プレツシヤシリンダ、１５ａ……第１の
流体室、１５ｂ……第２の流体室、１９……保持
部材、２０……圧油供給通路、２１……油圧源、
２３……圧力制御装置、Ｗ……ワーク。 The drawings show an embodiment of the present invention, and FIG. 1 is an overall configuration diagram schematically showing a centerless type grinding machine, FIG. 2 is an enlarged vertical sectional side view of a holding device, and FIG.
The figure is an enlarged sectional view taken along the line - in Figure 2.
The figure is a characteristic diagram showing the pressure characteristics of the pressure plate acting on the workpiece in relation to the cutting characteristics of the grindstone. 4...Main shaft, 4a...Parking plate, 1
1... Holding device, 12... Pressure plate,
13...pressure cylinder, 15a...first fluid chamber, 15b...second fluid chamber, 19...holding member, 20...pressure oil supply passage, 21...hydraulic source,
23...Pressure control device, W...Work.

Claims

[Scope of utility model registration request]

a rotatable pressure plate disposed to face a rotating main shaft of a grinding machine; a pressure cylinder that moves the pressure plate toward and away from the main shaft;
a pair of holding members that support the outer periphery of the annular workpiece supplied between the main shaft and the pressure plate at a predetermined angular interval; A workpiece holding device for a grinding machine that presses a workpiece against a main shaft and transmits the rotational force to the workpiece, which supplies pressurized fluid to the fluid chamber of the pressure cylinder through a pressurized fluid supply passage. A pressurized fluid supply device is provided in the pressurized fluid supply passage, and the fluid pressure to the fluid chamber of the pressure cylinder is set to a higher pressure than during grinding during the initial rotation of the workpiece, and during grinding. 1. A workpiece holding device for a grinding machine, comprising a pressure control device that performs variable control to adjust the pressure according to the force applied.