JPH0219462U

JPH0219462U -

Info

Publication number: JPH0219462U
Application number: JP9730288U
Authority: JP
Priority date: 1988-07-25
Filing date: 1988-07-25
Publication date: 1990-02-08

Description

[Brief explanation of drawings]

第１図は、この考案の実施例における砥石軸の
静圧軸受の断面図及び静圧軸受の油圧回路図、第
２図は、この考案の実施例における研削盤の平面
図及び数値制御装置のブロツク図、第３図は、こ
の考案の実施例におけるＣＰＵの作動フローチヤ
ートである。１：砥石頭本体、２：軸受スリーブ、３：砥石
車、４：プーリ、５：砥石軸、６：フランジ部、
７：環状凹所、８：静圧ポケツト、９：給油溝、
１０：絞り、１１：給油口、１２：油圧ポンプ、
１３：管路、１４：フイルタ部、１５：第１リリ
ーフ弁、１６：圧力計、１７：パイロツトドレン
、１８：電磁切換弁、１９：第２リリーフ弁、２
０：第３リリーフ弁、１８１，１８２：ソレノイ
ド、３１：ベツド、３２，３６：サーボモータ、
３３：砥石台、３４：工作主軸台、３５：心押台
、３７：工作物テーブル、４０：数値制御装置、
４１：ＣＰＵ（中央演算・処理装置）、４２：記
憶装置、４３，４４：インタフエース、４５，４
６：駆動回路、４７：シーケンサ、４８：データ
入力用キーボード。 Fig. 1 is a sectional view of the hydrostatic bearing of the grinding wheel shaft and a hydraulic circuit diagram of the hydrostatic bearing in the embodiment of this invention, and Fig. 2 is a plan view of the grinding machine and the numerical control device in the embodiment of this invention. The block diagram in FIG. 3 is a flowchart of the operation of the CPU in an embodiment of this invention. 1: Grinding wheel head body, 2: Bearing sleeve, 3: Grinding wheel, 4: Pulley, 5: Grinding wheel shaft, 6: Flange part,
7: Annular recess, 8: Static pressure pocket, 9: Oil supply groove,
10: Throttle, 11: Oil filler port, 12: Hydraulic pump,
13: Pipeline, 14: Filter section, 15: First relief valve, 16: Pressure gauge, 17: Pilot drain, 18: Solenoid switching valve, 19: Second relief valve, 2
0: Third relief valve, 181, 182: Solenoid, 31: Bed, 32, 36: Servo motor,
33: Grinding wheel head, 34: Work headstock, 35: Tailstock, 37: Workpiece table, 40: Numerical control device,
41: CPU (central processing/processing unit), 42: Storage device, 43, 44: Interface, 45, 4
6: Drive circuit, 47: Sequencer, 48: Keyboard for data input.

Claims

[Scope of utility model registration request]

A bearing sleeve with a static pressure pocket that supports the grinding wheel shaft, a pressure oil supply path that communicates with the static pressure pocket, a supply pressure setting device in the pressure oil supply path, and a pressure switch that changes the set pressure of the supply pressure setting device. A hydrostatic bearing device for a grinding machine, which is composed of a change device and a control device that controls switching of the pressure change change device based on commands based on grinding condition data such as grinding wheel rotation speed, grinding feed rate, work spindle rotation speed, etc.