JPS5893323U

JPS5893323U - Hydraulic mechanism of portable drilling machine

Info

Publication number: JPS5893323U
Application number: JP18981781U
Authority: JP
Inventors: 芳邦亀倉
Original assignee: 亀倉精機株式会社
Priority date: 1981-12-19
Filing date: 1981-12-19
Publication date: 1983-06-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示すものにして、第１図は縦
断面図、第２図はＡ−Ａ線断面矢視図、第３図はＢ−Ｂ
線断面矢視図、第４図は横断面図、第５図は全体側面図
、第６図は全体正面図である。ａ・・・加工物、１・・・フレーム、２・・・シリンダ
ヘッド、３・・・プランジャ、４・・・パンチ、５・・
・ダイス、６・・・ポンプ本体、７・・・操作ハンドル
、８・・・油タンク、９・・・ポンププランジャ、１−
０・・・復帰用バネ、１１・・・油流通路、１２・・・
吐出逆止弁、１３・・・吸込逆止弁、１４・・・油吸込
路、１５・・・ＩＪ　ＩＪ−フ弁、１６・・・油源流路
、１７・・・リセット逆止弁、１８・・・油戻流路、１
９・・・リセットレバー。The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view, FIG. 2 is a cross-sectional view taken along line A-A, and FIG. 3 is a cross-sectional view taken along line B-B.
4 is a cross-sectional view, FIG. 5 is an overall side view, and FIG. 6 is an overall front view. a... Workpiece, 1... Frame, 2... Cylinder head, 3... Plunger, 4... Punch, 5...
・Dice, 6...Pump body, 7...Operation handle, 8...Oil tank, 9...Pump plunger, 1-
0...Returning spring, 11...Oil flow passage, 12...
Discharge check valve, 13... Suction check valve, 14... Oil suction path, 15... IJ IJ-fu valve, 16... Oil source flow path, 17... Reset check valve, 18 ...Oil return flow path, 1
9...Reset lever.

Claims

[Scope of utility model registration request]

A cylinder head is attached to the front part of the frame, a plunger is installed inside the cylinder head so as to be movable up and down, a punch is attached to the plunger, a die is attached to the frame so as to face the punch, and the die is attached to the frame so as to face the punch. A pump body is attached to the rear of the pump body, an operating handle is attached to the pump body, and the punch is gradually moved downwardly and protrusively by reciprocating rocking operation of the operating handle, and the punch is moved to protrude and lower lightweight steel by cooperation with the die. Drilling is performed on workpieces such as flat steel, and the pump body is equipped with an oil tank, and the pump body is equipped with a pump plunger that is reciprocated by the operation handle. A single-acting spring return type is installed inside the cylinder head using a return spring, and the push side of the plunger and the discharge side of the pump plunger are communicated through an oil flow passage, and the discharge side is connected to the discharge side of the pump plunger. A stop valve is interposed, and the suction side of the pump plunger and the inside of the oil tank are communicated through an oil suction passage with a suction check valve interposed, and the reciprocating movement of the pump plunger causes the oil in the oil tank to flow. is discharged into the oil flow passage in a pulsating manner, and furthermore, a relief valve is interposed between the middle of the oil flow passage and the inside of the oil tank, and an oil source flow passage connects the middle of the oil flow passage and the inside of the oil tank. A reset lever is attached to the frame, and a reset lever is attached to the frame, and a reset check valve is interposed between the oil return passage and the oil return flow path, and a reset lever is attached to the frame, and by operating the reset lever, A hydraulic mechanism for a portable drilling machine, characterized in that the pressure oil in the cylinder head is caused to flow back into an oil tank, and the plunger is rapidly raised and retracted to an initial position.