Vacuum disc

The utility model relates to a vacuum disc which comprises a main body, a support block and a sealing ring, wherein one working surface of the main body is provided with a concave chamber and a holding groove which can enclose the concave chamber. The side body of the main body is provided with an e...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	LUJIA LIAO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINE TOOLS MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The utility model relates to a vacuum disc which comprises a main body, a support block and a sealing ring, wherein one working surface of the main body is provided with a concave chamber and a holding groove which can enclose the concave chamber. The side body of the main body is provided with an extraction channel which is communicated with the concave chamber. The outer end of the extraction channel is connected with and provided with a pump to extract the air in the concave chamber, while the support block which is made of hard porous granular materials is arranged in the concave chamber of the main body. The support block is provided with an exerted support surface which is cut to uniform with the processing surface of the main body and has the same height with the processing surface. The sealing ring which is made of elastic materials with sealing performance is arranged in the holding groove of the main body. A top surface slightly protrudes the working surface of the main body and is used for the interference with the surface of a workpiece, so that the concave chamber of the main body can be in airtight state.