Modular drill having clamp and bump surfaces for locking and unlocking an insert

A modular drill comprising:

• a drill body comprising a center hole extending through a first surface of the drill body, and a side hole extending at an actuation location through a second surface of the drill body, the center hole and the side hole intersecting within the drill body;
• an insert moveably disposed in the center hole;
• and a retaining member moveably disposed in the side hole, the retaining member comprising a torque screw threadedly attached to the side hole, the torque screw comprising a torque nut and a lock-rod pin rotatably attached to the torque nut, wherein the lock-rod pin comprises a clamp surface and a bump surface;
• wherein when the retaining member is rotated in a first direction in the side hole the clamp surface forces the insert into a locked position within the center hole of the drill body, and when the retaining member is rotated in a second direction, opposite to the first direction, in the side hole the bump surface bumps the insert out of the locked position allowing the insert to be removed from the center hole of the drill body, wherein the insert comprises a notch and a bottom surface at one end, wherein in the locked position clamp surface is disposed against the notch and in the out of the locked position the bump surface is disposed against the bottom surface or an adjacent surface of the insert, and wherein the retaining member comprises a second notch, the second notch comprising the clamp surface and the bump surface, the clamp surface disposed non-parallel relative to the bump surface.

A modular drill comprising:

• a drill body comprising a center hole extending through a surface of the drill body, a side hole extending completely through the drill body from an actuation location through an entrance location, the side hole comprising a first portion having a first diameter at the actuation location and a second portion having a second diameter at the entrance location, the second diameter larger than the first diameter, the center hole and the side hole intersecting within the drill body;
• an insert moveably disposed in the center hole, the entrance location disposed below both the insert and the actuation location;
• and a retaining member threadedly attached to and moveably disposed in the side hole, the retaining member comprising a clamp surface and a bump surface;
• wherein when the retaining member is rotated in a first direction in the side hole the clamp surface forces the insert into a locked position within the center hole of the drill body, and when the retaining member is rotated in a second direction, opposite to the first direction, in the side hole the bump surface bumps the insert out of the locked position allowing the insert to be removed from the center hole of the drill body, wherein the insert comprises a notch and a bottom surface at one end, wherein in the locked position the clamp surface is disposed against the notch and in the out of the locked position the bump surface is disposed against the bottom surface, and wherein the retaining member comprises first and second circular grooves, the clamp surface comprising the first circular groove and the bump surface comprising the second circular groove.