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US 12,752,384 B2Granted
Device for clamping workpieces on machine tools
AssigneeHydroblock S.r.l.
InventorDavide Zanni
Life of this patent
Estimating the term…
Abstract
The device (1) for clamping workpieces on machine tools comprises: a basic body (2) provided with a fluid-operated cylinder (3, 4, 5) containing a fluid under pressure; a stem (8, 9, 10) comprising an intermediate portion (8), a first end portion (9) and a second end portion (10); a clamping bracket (19, 20) associated with the first end portion (9) and movable at least between: a home position; and a work position; a first control assembly (25) for controlling the attainment of the work position; a second control assembly (36) for controlling the attainment of the home position.
Claims18
A device for clamping workpieces on machine tools, comprising:
- at least one basic body fixable to a machine tool and provided with a fluid-operated cylinder containing a fluid under pressure;
- at least one stem extending along a main axis and is partly inserted into said fluid-operated cylinder in a sliding manner along said main axis by thrust of said fluid under pressure, said stem comprising at least one intermediate portion arranged inside said fluid-operated cylinder and a first end portion extending out of said fluid-operated cylinder;
- at least one clamping bracket associated with said first end portion of the stem for clamping a workpiece to be machined on said machine tool, said clamping bracket being movable at least between:
- a home position, wherein said clamping bracket is spaced apart from said basic body;
- and
- a work position, wherein said clamping bracket is moved close to said basic body for clamping said workpiece;
- at least a first control assembly for controlling the attainment of said work position, comprising:
- at least a first probe element associated with said first end portion of said stem;
- and
- at least a first contact sensor associated with said basic body and adapted to detect the contact with said first probe element in said work position;
- wherein said stem comprises at least a second end portion extending out of said fluid-operated cylinder on an opposite side with respect to said first end portion, and wherein said device comprises at least a second control assembly for controlling the attainment of said home position, comprising:
- at least a second probe element associated with said second end portion of said stem;
- and
- at least a second contact sensor associated with said basic body and adapted to detect the contact with said second probe element in said home position;
- wherein said second probe element comprises at least one probe bracket extending cantilevered from said second end portion along a direction substantially transverse to said main axis and adapted to come into contact with said second contact sensor in said home position.
12 more elements
A device for clamping workpieces on machine tools, comprising:
- at least one basic body fixable to a machine tool and provided with a fluid-operated cylinder containing a fluid under pressure;
- at least one stem extending along a main axis and is partly inserted into said fluid-operated cylinder in a sliding manner along said main axis by thrust of said fluid under pressure, said stem comprising at least one intermediate portion arranged inside said fluid-operated cylinder and a first end portion extending out of said fluid-operated cylinder;
- at least one clamping bracket associated with said first end portion of the stem for clamping a workpiece to be machined on said machine tool, said clamping bracket being movable at least between:
- a home position, wherein said clamping bracket is spaced apart from said basic body;
- and
- a work position, wherein said clamping bracket is moved close to said basic body for clamping said workpiece;
- at least a first control assembly for controlling the attainment of said work position, comprising:
- at least a first probe element associated with said first end portion of said stem;
- and
- at least a first contact sensor associated with said basic body and adapted to detect the contact with said first probe element in said work position;
- wherein said stem comprises at least a second end portion extending out of said fluid-operated cylinder on an opposite side with respect to said first end portion, and wherein said device comprises at least a second control assembly for controlling the attainment of said home position, comprising:
- at least a second probe element associated with said second end portion of said stem;
- and
- at least a second contact sensor associated with said basic body and adapted to detect the contact with said second probe element in said home position;
- wherein said first probe element comprises:
- an auxiliary bracket extending cantilevered from said first end portion along a direction substantially transverse to said main axis;
- and
- a probe pin associated with said auxiliary bracket, extending along a direction substantially parallel to said main axis and adapted to come into contact with said first contact sensor in said work position.
15 more elements
Dependencies are inferred from the claim text.