Centering and clamping apparatus for elongate round bodies of various diameter
First Claim
1. The centering and clamping apparatus for the automatic centering of elongated round bodies, such as round timbers, with the centering axis of processing machines, said apparatus having a plane of symmetry and comprising:
- (a) chuck arms which cross to form a scissors-like structure;
(b) means for pivotally mounting said chuck arms at the bottom thereof, and means for synchronously pivoting said arms for clamping and releasing of such round body;
(c) each chuck arm including a collet jaw comprised of a lower slide element and an upper grip element having an effective flank, each flank being concavely curved to permit the flank to engage and clamp the circumference of the round body at bearing points; and
(d) means for raising and lowering said mounting means for said chuck arms to permit loading and unloading of the round body, and wherein(e) the concave shape of the effective flanks have such a defined curvature that the grip elements of said chuck arms engage the circumference of the round body at the instant when said round body is moved upwardly along said slide elements until the longitudinal axis of said body coincides with the centering axis of said processing machine.
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Accused Products
Abstract
The invention relates to an apparatus for the automatic mechanical centering and simultaneous clamping of elongate round bodies of various diameter. It consists of two collet chunks arranged at an axial distance from each other in the plane of symmetry of which lies the centering axis. The two chunk arms of each collet chunk include collet jaws each of which is provided with one slide element and one grip element. The effective flanks of the grip elements are concavely curved such that they in each case engage the circumference of the round bodies when the round bodies, sliding along the effective flanks on the slide elements, have been raised by the latter until their longitudinal axes coincide with the centering axis.
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Citations
11 Claims
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1. The centering and clamping apparatus for the automatic centering of elongated round bodies, such as round timbers, with the centering axis of processing machines, said apparatus having a plane of symmetry and comprising:
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(a) chuck arms which cross to form a scissors-like structure; (b) means for pivotally mounting said chuck arms at the bottom thereof, and means for synchronously pivoting said arms for clamping and releasing of such round body; (c) each chuck arm including a collet jaw comprised of a lower slide element and an upper grip element having an effective flank, each flank being concavely curved to permit the flank to engage and clamp the circumference of the round body at bearing points; and (d) means for raising and lowering said mounting means for said chuck arms to permit loading and unloading of the round body, and wherein (e) the concave shape of the effective flanks have such a defined curvature that the grip elements of said chuck arms engage the circumference of the round body at the instant when said round body is moved upwardly along said slide elements until the longitudinal axis of said body coincides with the centering axis of said processing machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification