Machining tool for chip removal

• US 20060127194A1
• Filed: 05/22/2003
• Published: 06/15/2006
• Est. Priority Date: 08/17/2002
• Status: Abandoned Application

• Current Assignee: Hartmetall-Werkzeugfabrik Paul Horn GmbH
• Original Assignee: Hartmetall-Werkzeugfabrik Paul Horn GmbH
• Inventors: Schafer, Hans
• Application Number:
  US10/523,817
• Publication Number:
  US 20060127194A1
• Time in Patent Office: Days
• US Class Current: 408/231
• CPC Class Codes: B23C 2210/02 Connections between the shanks and detachable cutting heads
• CPC Class Codes: B23C 2210/03 Cutting heads comprised of different material than the shank irrespective of whether the head is detachable from the shank
• CPC Class Codes: B23C 5/10 Shank-type cutters, i.e. with an integral shaft
• CPC Class Codes: Y10T 408/9098 with means to retain Tool to support
• CPC Class Codes: Y10T 409/30952 with cutter holder

Abstract

The invention concerns a machining tool for chip removal, in particular a milling cutter, comprising a support (10) wherein is provided a housing (12) for a cutting element (14) equipped with a machining part (16) and a fixing part (18). The fixing part (18) includes a base part (20) which is placed in the housing (12) in receiving position (22) and which, when it its rotated into interlocking position (26) meshes beneath at least one retaining flange (26) of the housing (12), being thereby capable of being used with the cutting element (14) for chip removal matching. It is therefore possible to fix said cutting element without additional retaining means, such as a fixing screw or the like, its simple insertion into the housing and its interlocking position by rotation providing a reliable fixing method. Conversely, said cutting element can be released from its interlocked position and extracted from the housing hardly with very little force.

Claims

1. A machining tool for chip removal, a milling tool in particular, having a holder (10) wherein there is provided a tool carrier (12) for a cutting element (14) which has a machining part (16) and a fastening part (18), characterized in that the fastening part (18) has a base part (20) which may be inserted into the tool carrier (12) in a receiving position (22) and which when turned into the locking position (26) extends under at least one holding projection (26) in the tool carrier (12) in order thereby to be usable for metal cutting with the cutting element (14).

2. The tool as claimed in claim 1, wherein the tool carrier (12) on the end side has a receiving channel (30) which extends transversely to the longitudinal axis (28) of the holder (10) and which may be penetrated by at least one locking piece (32) of the base part (20), and wherein the receiving channel (30) on the edge side is bordered by the respective holding projection (26) under which the respective locking piece (32) may extend in the locking position (24).

3. The tool as claimed in claim 2, wherein the receiving channel (30) on the end side leads into a receiving cone (34) which widens toward the exterior and which may be brought into contact with a correspondingly configured centering cone (36) of the fastening part (18) in the locking position (24) of the cutting element (14).

4. The tool as claimed in claim 3, wherein the centering cone (36) is adjoined by the machining part (16) with at least one machining edge (38), preferably a triple-edged cutting plate (40), and wherein between the centering cone (36) and the machining edge (38) there is a connecting part (42) which is pulled in the longitudinal axis (28) of the holder (10) in the locking position (24) of the cutting element (14) against the outer circumferential edge (46) of the receiving cone (34).

5. The tool as claimed in claim 2, wherein on the base part (20) there are two locking pieces (32) which are diametrically opposite one another and wherein, located on the free end of the fastening part (18), the locking pieces are connected to the centering cone (36) which widens toward exterior by way of a fastening shaft (48).

6. The tool as claimed in claim 2, wherein the respective locking piece (32) on its side adjacent to the centering cone (36) is provided with a bevel (50) which slopes down in the direction of the free end of the fastening part (18).

7. The tool as claimed in claim 2, wherein in the interior (52) of the tool carrier (12) assigned to each locking piece (32) there is at least one part of a thread (54) with a lead beginning on the holding projection (26), which lead is oriented in the direction of the inside wall (56) of the tool carrier (12), which wall is at least partially closed on the end side.

8. The tool as claimed in claim 5, wherein one of the two locking pieces (32) is designed to be radially shorter than the other and wherein the slotted receiving channel (30) has one correspondingly longer and one shorter receiving flank (58).

9. The tool as claimed in claim 1, wherein the cutting element (14) after insertion into the tool carrier (12) may be moved against the direction of machining of the respective machining edge (38) into its locking position (24) and in the opposite direction of rotation into a receiving position (22).

10. The tool as claimed in claim 5, wherein the axial length of the fastening shaft (48) is at least greater than the length of the diametrically opposite holding projections (26), especially relative to their bevels (50), which length is measured in the longitudinal axis (28) of the holder (10).