Patent ID: 8661957
Filing Date: 2014-03-04
Classification: B23D,B27B,Y10T

Abstract:
1. A cutting device comprising: a table having a table surface for placing thereon a workpiece; a tool unit; a cutting tool mounted to the tool unit and having a rotational axis; a pivotal support device mounted on the table and supporting the tool unit, so that the tool unit can be laterally tilted to incline the rotational axis of the cutting tool relative to the table surface; wherein the pivotal support device comprises a base member mounted to the table and a support member configured to support the tool unit and coupled to the base member, so that the support member can rotate relative to the base member about a rotational axis; and a positioning device configured to be able to position the tool unit at any one of a plurality of laterally tilted positions; wherein the positioning device comprises: a first member mounted to the base member and rotatable about the rotational axis of the support member; a second member mounted to the support member and movable in a radial direction with respect to the rotational axis of the support member; and a third member mounted to the support member and positioned to be opposed to the first member in a circumferential direction about the rotational axis; wherein the first member includes a plurality of recesses arranged in series in the radial direction; wherein each of the recesses is open toward the radially outer side and has a circumferential end for contacting with the second member; wherein the circumferential ends of the recesses are positioned at different angular positions about the rotational axis; and wherein, as the support member rotates relative to the base member, the second member can contact the circumferential end of one of the recesses depending on the position of the second member in the radial direction and can move the first member toward the third member, so that the first member can be held between the second member and the third member.