Mechanism for attaching tool holder to turret

Patent metadata

Field	Value
Publication number	US-12226838-B2
Application number	US-202017780366-A
Country	US
Kind code	B2
Filing date	Nov 18, 2020
Priority date	Nov 29, 2019
Publication date	Feb 18, 2025
Grant date	Feb 18, 2025

Abstract

An angle adjustment mechanism includes an angle adjustment block including first opposing side faces inclined relative to the direction along the rotation axis of the turret; first and second adjustment blocks having inclined faces that are brought into surface contact with respective first opposing side faces, and movable in a direction along the rotation axis; a depression formed in a tool holder, and accommodates the angle adjustment block with the first and second adjustment blocks; first and second adjusters that move the first and second adjustment blocks in a direction along the rotation axis of the turret; and a first positioning member conducting positioning between the turret and the tool holder, and a second positioning member conducting positioning between the turret and the angle adjustment block. This configuration provides a mechanism for attaching a tool holder to a turret which can easily conduct highly precise angle adjustment.

First claim

The invention claimed is:

1. A mechanism for attaching a tool holder to a turret, the mechanism comprising an angle adjustment mechanism, and a fixing mechanism that fixes the tool holder to the turret, wherein the angle adjustment mechanism comprises:
an angle adjustment block composed of a prism including first opposing side faces inclined relative to a direction along the rotation axis of the turret in plan view, and second opposing side faces parallel to each other;
first and second adjustment blocks disposed to sandwich the angle adjustment block in plan view, include inclined faces that are brought into surface contact with respective first opposing side faces, and composed of prisms that are movable in directions along the rotation axis of the turret,
a depression formed in the tool holder, configured so that the angle adjustment block is movable, and includes a guide face opposing one of the second opposing side faces of the angle adjustment block, and a pair of guide faces with which the first and second adjustment blocks are movable in a direction crossing an arrangement direction of the first and second adjustment blocks while being in contact with the opposing faces of the inclined faces of the first and second adjustment blocks,
first and second adjusters that move the first and second adjustment blocks in a direction along the rotation axis of the turret while the angle adjustment block and the first and second adjustment blocks are accommodated in the depression, and
a first positioning member conducting positioning between the turret and the tool holder, and a second positioning member conducting positioning between the turret and the angle adjustment block.

2. The mechanism for attaching a tool holder to a turret of claim 1 , wherein
in the angle adjustment block, the second opposing side faces include a first guide face and a second guide face that are orthogonally oriented relative to the rotation axis of the turret in plan view, and the first opposing side faces include a first inclined face and a second inclined face that incline in opposite directions between the first guide face and the second guide face,
the first adjustment block includes a third opposing side face including a third inclined face relatively movable while being in surface contact with the first inclined face, and a third guide face parallelly oriented relative to the rotation axis of the turret,
the second adjustment block includes a fourth opposing side face including a fourth inclined face relatively movable while being in surface contact with the second inclined face, and a fourth guide face parallelly oriented relative to the rotation axis of the turret, and
the depression includes a fifth guide face opposing the first guide face of the angle adjustment block, a sixth guide face opposing the second guide face of the angle adjustment block, a seventh guide face relatively movable while being in surface contact with the third guide face of the first adjustment block, and an eighth guide face relatively movable while being in surface contact with the fourth guide face of the second adjustment block.

3. The mechanism for attaching a tool holder to a turret of claim 2 , wherein
the first and second adjusters are configured with a female screw portion and a male screw, wherein the female screw portion is formed at the first and second adjustment blocks, and the male screw is screwed in the female screw portion through first and second adjustment holes formed at one face of the tool holder; and
an energizing mechanism that energizes the first and second adjustment blocks in a direction along the seventh guide face or eighth guide face is included.

4. The mechanism for attaching a tool holder to a turret of claim 3 , wherein
the one face of the tool holder where the first and second adjustment holes are formed corresponds to a front face or a rear face of the turret.

5. The mechanism for attaching a tool holder to a turret of claim 1 , wherein
a pair of the angle adjustment mechanisms are provided in the tool holder along a direction parallel to the rotation axis of the turret, and
the first positioning member also works as the second positioning member.

6. The mechanism for attaching a tool holder to a turret of claim 1 , wherein
the first and second positioning members are composed of a depression and a projection: in an object to be positioned, the depression having a circle shape in cross sectional view and included at one attachment face side, and the projection having a circle shape in cross sectional view and included at the other attachment face side to be fit in the depression.

Assignees

• Dmg Mori Co Ltd

Inventors

• Yamane Masahiro
• Ueda Toshio
• MINESHIGE Tomoyuki

Classifications

• B23B2260/124

  Screws · CPC title

• B23B29/248

  with individually adjustable toolholders · CPC title

• B23B29/24 Primary

  Tool holders for a plurality of cutting tools, e.g. turrets {(indexing devices B23Q16/00)} · CPC title

• B23B29/20 Primary

  for placing same by shanks in sleeves of a turret · CPC title