Clamping device
First Claim
1. A clamping device for clamping a work piece having a shape, comprising:
- a clamp main body;
a reaction support provided at a rear part of the clamp main body,an input member arranged on the clamp main body in front of the reaction support with a gap between the input member and the clamp main body and placed in contact with a front end face of the reaction support;
an output member arranged on the clamp main body in front of the input member and having a main portion in contact with a front end of the input member, the output member including at its front end portion an output portion for pressing the work piece forward;
a guide means provided in the clamp main body and the output member, for guiding the output member movably only in a longitudinal direction directed back and forth;
a driving means for driving the input member toward the clamp main body; and
a wedge type converting means for converting a driving force supplied to the input member from the driving means into a clamping force for driving the output member forward;
wherein said guide means comprises an inverted T-shaped groove formed in the longitudinal direction in a middle portion of the clamp main body and an inverted T-shaped leg portion of the output member, slidably engaged in the T-shaped groove;
wherein said wedge type converting means comprises an inclined input portion inclined upward toward the front and formed at the front end of the input member, and an inclined passive portion inclined upward toward the front and formed at a rear end of the main portion of the output member and abutting the input portion;
wherein said clamping device includes a spring means interposed between the clamp main body and a front end portion of the inverted T-shaped leg portion to bias the output member toward the reaction support.
1 Assignment
0 Petitions
Accused Products
Abstract
A clamping device for clamping a work piece to be machined by a machine tool on a base surface of a table of the machine tool or a work pallet for fixing a work piece, comprises at least a clamp main body, a reaction support provided at the rear portion of the clamp main body, an input member disposed in front of the reaction support on the clamp main body with a gap therebetween, an output member arranged in front of the input member and having an output portion for clamping the work piece at the front end, a guide mechanism for slidably guiding the output member in a longitudinal direction directed back and forth, a driving mechanism for driving the input member toward the clamp main body, and a wedge type converting mechanism for converting a driving force supplied to the input member from the driving mechanism into a clamping force for driving the output member. During clamping drive or operation, the output member does not move vertically, thereby the work piece is free from damage and the machining accuracy is improved.
22 Citations
16 Claims
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1. A clamping device for clamping a work piece having a shape, comprising:
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a clamp main body; a reaction support provided at a rear part of the clamp main body, an input member arranged on the clamp main body in front of the reaction support with a gap between the input member and the clamp main body and placed in contact with a front end face of the reaction support; an output member arranged on the clamp main body in front of the input member and having a main portion in contact with a front end of the input member, the output member including at its front end portion an output portion for pressing the work piece forward; a guide means provided in the clamp main body and the output member, for guiding the output member movably only in a longitudinal direction directed back and forth; a driving means for driving the input member toward the clamp main body; and a wedge type converting means for converting a driving force supplied to the input member from the driving means into a clamping force for driving the output member forward; wherein said guide means comprises an inverted T-shaped groove formed in the longitudinal direction in a middle portion of the clamp main body and an inverted T-shaped leg portion of the output member, slidably engaged in the T-shaped groove; wherein said wedge type converting means comprises an inclined input portion inclined upward toward the front and formed at the front end of the input member, and an inclined passive portion inclined upward toward the front and formed at a rear end of the main portion of the output member and abutting the input portion; wherein said clamping device includes a spring means interposed between the clamp main body and a front end portion of the inverted T-shaped leg portion to bias the output member toward the reaction support. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification