Mandrel for working disks
AssigneeDFS-Diamon GmbH
InventorWolfgang Schleicher
Life of this patent
Estimating the term…
Abstract
A mandrel or a clamping element for working disks, for example, separating disks, grinding disks and/or polishing disks, contains a shaft to fix the mandrel to a receiving element or to a clamping element of a working machine. The mandrel has a fixing element for detachable fixing and clamping the working disk between a clamping surface formed on one end of the mandrel and the fixing element. A working disk, which can be used on a mandrel or on a clamping element, contains a fixing opening, having a cross-section that deviates from that of a circle, on a receiving element of the mandrel reaching through the opening in a form-fitting manner.
Claims12
A mandrel functioning as a clamping element for a working disk, the mandrel comprising:
- a shaft for affixing the mandrel to a retainer or clamping device of an instrument, said shaft having an end with a clamping surface and an opening formed therein;
- a detachable fixing element for affixing and clamping the working disk in a detachable manner between said clamping surface and said detachable fixing element, said detachable fixing element being a pin with a pin shaft and a pin head extending from said pin shaft, said pin shaft being disposable in said opening;
- a mechanism for anchoring said pin or said pin shaft of said pin in said opening in a detachable manner;
- and
- a retainer disposed on said clamping surface, said retainer attaching the working disk for preventing the working disk from rotating;
- said pin having a further clamping surface for engaging the working disk;
- said clamping surface of said shaft or said further clamping surface of said pin being formed by at least one element made from a permanently elastic material;
- said mechanism being a protrusion extending into said opening;
- said pin shaft having a groove formed therein, said groove being open at one end for receiving said protrusion formed in said opening;
- said pin having a recess formed therein defining a tappet with a flattened surface running from one end of said pin for inserting said protrusion into said groove;
- and
- said tappet forming an angular surface on one side for said protrusion.
A mandrel functioning as a clamping element for a working disk, the mandrel comprising:
- a shaft for affixing the mandrel to a retainer or clamping device of an instrument, said shaft having an end with a clamping surface and an opening formed therein;
- a detachable fixing element for affixing and clamping the working disk in a detachable manner between said clamping surface and said detachable fixing element, said detachable fixing element being a pin with a pin shaft and a pin head extending from said pin shaft, said pin shaft being disposable in said opening;
- a mechanism for anchoring said pin or said pin shaft of said pin in said opening in a detachable manner;
- and
- a retainer disposed on said clamping surface, said retainer attaching the working disk for preventing the working disk from rotating;
- said pin having a further clamping surface for engaging the working disk;
- said clamping surface of said shaft or said further clamping surface of said pin being formed by at least one element made from a permanently elastic material;
- said mechanism selected from the group consisting of a latching mechanism for detachably anchoring of said pin or said pin shaft and a bayonet lock;
- the mandrel having a longitudinal axis and said opening formed parallel to said longitudinal axis;
- said end of said shaft being a headpiece;
- said latching mechanism including at least one elastic latching element produced from a same material as said shaft or said headpiece;
- said pin shaft having at least one recess formed therein for engaging said elastic latching element;
- and
- said elastic latching element being one of at least two elastic latching elements fitted at an offset around said longitudinal axis of the mandrel, and said recess on said pin shaft forming a counter-latching element assigned to each of said elastic latching elements.
Dependencies are inferred from the claim text.