Cutting tool assembly having clamp assembly comprising a clamp and a coolant plate

• US 9,511,421 B2
• Filed: 06/14/2013
• Issued: 12/06/2016
• Est. Priority Date: 06/14/2013
• Status: Active Grant

• Current Assignee: Kennametal Incorporated
• Original Assignee: Kennametal Incorporated
• Inventors: Chen, Shi, Henry, Nicholas J., Mizgalski, Kent P., Eichelberger, Samuel L.
• Primary Examiner(s): Addisu, Sara
• Application Number:
  US13/918,192
• Publication Number:
  US 20140369772A1
• Time in Patent Office: 1,271 Days
• Field of Search: 407/11, 407113-115, 407102-107, 408/56, 408/57
• US Class Current: 1/1
• CPC Class Codes: B23B 2205/00 Fixation of cutting inserts in holders
• CPC Class Codes: B23B 2250/12 Cooling and lubrication
• CPC Class Codes: B23B 2260/03 Clamps
• CPC Class Codes: B23B 27/10 Cutting tools with special provision for cooling drills with lubricating or cooling equipment B23B51/06; features relating to lubricating or cooling of milling cutters B23C5/28; arrangements or devices for cooling or lubricating tools or work B23Q11/10
• CPC Class Codes: B23B 27/1677 with plate-like cutting inserts clamped by a clamping member acting almost perpendicularly on the chip-forming plane and at the same time upon the wall of a hole in the insert
• CPC Class Codes: Y10T 407/14 with means to apply fluid to cutting tool

Abstract

A clamp assembly to secure a cutting insert to a holder that includes a clamp that has a distal end and a clamp projection depending from the distal end of the clamp. There is a coolant plate that has a top plate surface and a bottom plate surface wherein the top plate surface contains a recess that receives the clamp projection upon assembly of the clamp and the coolant plate. The bottom plate surface contains a bowl having an open bowl end wherein in operation the bowl directs coolant through the open bowl end toward the cutting insert. The assembly has a positioner extending between the clamp and the coolant plate so as to maintain a position of the clamp relative to the coolant plate upon the assembly of the clamp and the coolant plate.

Claims

1. A clamp assembly to secure a cutting insert to a holder, the clamp assembly comprising:

a clamp;

the clamp having a distal end and a clamp projection depending from the distal end of the clamp;

a coolant plate having a top plate surface and a bottom plate surface, the top plate surface containing a recess wherein the recess receives the clamp projection upon assembly of the clamp and the coolant plate;

the bottom plate surface containing a bowl having an open bowl end wherein in operation the bowl directs coolant through the open bowl end toward the cutting insert;

a positioner extending between the clamp and the coolant plate so as to maintain a position of the clamp relative to the coolant plate upon the assembly of the clamp and the coolant plate;

wherein the recess comprising a first notch, and wherein the first notch having a first notch central longitudinal axis, and the coolant plate having a coolant plate central longitudinal axis; and

further including a second notch having a second notch central longitudinal axis, and the first notch central longitudinal axis and the second notch central longitudinal axis each being disposed at a notch disposition angle to the coolant plate central longitudinal axis.

2. The clamp assembly according to claim 1 wherein the first notch intersecting the second notch.

3. The clamp assembly according to claim 1 wherein the clamp projection comprising a rib, and when the clamp is assembled to the coolant plate, the rib is received within a selected one of the first notch and the second notch.

4. A clamp assembly to secure a cutting insert to a holder, the clamp assembly comprising:

a clamp;

the clamp having a distal end and a clamp projection depending from the distal end of the clamp;

a coolant plate having a top plate surface and a bottom plate surface, the top plate surface containing a recess wherein the recess receives the clamp projection upon assembly of the clamp and the coolant plate;

the bottom plate surface containing a bowl having an open bowl end wherein in operation the bowl directs coolant through the open bowl end toward the cutting insert;

a positioner extending between the clamp and the coolant plate so as to maintain a position of the clamp relative to the coolant plate upon the assembly of the clamp and the coolant plate; and

wherein the clamp having a clamp bore and the positioner comprising a clamp post extending from the clamp bore, and the bottom plate surface further containing a rearward notch wherein the rearward notch receives the clamp post upon assembly of the clamp and the coolant plate so as to maintain a position of the clamp relative to the coolant plate.

5. A cutting assembly for chipforming cutting of a workpiece, the cutting assembly comprising:

a cutting insert;

a holder having a seat wherein the seat receives the cutting insert upon assembly of the cutting insert to the holder;

a clamp;

the clamp having a distal end and a clamp projection depending from the distal end of the clamp;

a coolant plate having a top plate surface and a bottom plate surface, the top plate surface containing a recess wherein the recess receives the clamp projection upon assembly of the clamp and the coolant plate;

the bottom plate surface containing a bowl having an open bowl end wherein in operation the bowl directs coolant through the open bowl end toward the cutting insert; and

a positioner extending between the clamp and the coolant plate so as to maintain a position of the clamp relative to the coolant plate upon the assembly of the clamp and the coolant plate; and

wherein the clamp having a clamp bore and the positioner comprising a clamp post extending from the clamp bore, and the bottom plate surface further containing a rearward notch wherein the rearward notch receives the clamp post upon assembly of the clamp and the coolant plate so as to maintain a position of the clamp relative to the coolant plate.

6. A coolant plate for use in cooperation with a clamp in a cutting assembly with a cutting insert and a clamp having a clamp post and a clamp projection, the coolant plate comprising:

a top plate surface and a bottom plate surface, the top plate surface containing a recess wherein the recess receives the clamp projection from the clamp upon assembly of the clamp and the coolant plate;

the bottom plate surface containing a bowl having an open bowl end wherein in operation the bowl directs coolant through the open bowl end toward a cutting insert; and

the bottom plate surface further containing a rearward notch wherein the rearward notch receives said clamp post from the clamp upon assembly of the clamp and the coolant plate.

7. The coolant plate according to claim 6 wherein the recess in the top plate surface comprising a top plate notch having a top plate notch central longitudinal axis, and the coolant plate having a coolant plate central longitudinal axis, and wherein the top plate notch central longitudinal axis being generally perpendicular to the coolant plate central longitudinal axis.

8. The coolant plate according to claim 7 wherein the rearward notch having a rearward notch central longitudinal axis, and the rearward notch central longitudinal axis being generally perpendicular to the top plate notch central longitudinal axis.

9. The coolant plate according to claim 6 wherein the coolant plate having a coolant plate central longitudinal axis, the rearward notch having a rearward notch central longitudinal axis, the bottom plate further containing a second rearward notch and the second rearward notch having a second rearward notch central longitudinal axis, and wherein the rearward notch central longitudinal axis being disposed at a rearward notch angle with respect to the coolant plate central longitudinal axis, and the second rearward notch central longitudinal axis being disposed at a second rearward notch angle with respect to the coolant plate central longitudinal axis, and the second rearward notch angle being generally equal to the rearward notch angle.

10. The coolant plate according to claim 6 wherein the recess in the top plate surface comprises a depression.