Belt grinding machine tool with device for controlling the position of the abrasive belt
a technology of belt grinding machine and abrasive belt, which is applied in the direction of grinding machine components, grinding/polishing apparatus, grinding machines, etc., can solve the problems of ineffective control of the path of movement the risk of damage to the abrasive belt, and the range and precision of controlling the position of the abrasive bel
Inactive Publication Date: 2010-09-30
IMEAS
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Problems solved by technology
An automatic device of the type mentioned above exhibits, in general, some disadvantages which combine to limit, in one aspect, the range and precision of controlling the position of the abrasive belt, and to increase, in another aspect, the ineffectiveness in controlling the path of movement of the abrasive belt and, therefore, the risk of damage thereto caused by impacts against members and / or parts of the machine on which it is mounted.
Method used
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[0011]The present invention is applicable generally to any type of belt grinding machine having an operating head either for calibrating and / or sanding operations or for surface finishing and / or grinding operations. It is also applicable to a belt grinding machine equipped with an operating head which operates either with or without water, oil or water / oil emulsion coolant, and which may be built in the “top” or “bottom” variant, with regard to the position of said operating head relative to the surface of the workpieces to be machined.
[0012]For the sake of brevity of the description, the possible applications of the invention to all types operating heads of belt grinding machines will not be described in the following, but for exemplification and non-limiting purposes the description will refer only to the application to the most simple and well known type of operating head, which is illustrated in FIG. 1 of the drawings and is designated therein by 10.
[0013]The operating head of t...
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A belt grinding machine tool with an operating head comprising an endless abrasive belt wound and stretched between at least two spaced rollers arranged parallel one another, of which a first is a driving roller and a second is a tensioning roller being supported to be adjustable in a direction which is substantially perpendicular to its axis of rotation. A device is provided for controlling the position of the abrasive belt which consists of at least a position sensor for sensing the position of the abrasive belt and at least an actuator for adjusting the position of the tensioning roller, in dependence of the position of the abrasive belt being sensed by the position sensor. The position sensor is a fork shaped optical sensor, or an optical sensor having an operatively equivalent shape, and the actuator is an electric drive.
Description
TECHNICAL FIELD[0001]The present invention generally relates to the technical field of machine tools for processing the surfaces of plate- and / or strip-shaped workpieces and, in particular, concerns a belt grinding machine tool of the type provided with an operating head either for calibrating and / or sanding operations or for surface finishing and / or grinding operations, and comprising a device for controlling the position of the abrasive belt.BACKGROUND[0002]In machine tools of the type mentioned above it is known to use an automatic device to keep the grinding belt in position while it rotates and to prevent possible deviations of the grinding belt from its path of movement and consequent damage thereto, caused by an impact against the machine members and / or parts on which the belt is mounted.[0003]Generally, the abrasive belt is mounted on an operating head which may exhibit various configurations, but which, however, is provided with a so-called “tensioning” roller, the position...
Claims
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Login to View More IPC IPC(8): B24B49/12B24B21/20
CPCB24B49/12B24B21/20
Inventor MARCONI, DARIO
Owner IMEAS