Cartridge and milling tool

Patent metadata

Field	Value
Publication number	US-11458553-B2
Application number	US-201816629536-A
Country	US
Kind code	B2
Filing date	Aug 31, 2018
Priority date	Oct 10, 2017
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

A purpose is to provide a cartridge that can adjust position even if a body does not have an adjusting mechanism.A cartridge 10 is provided on a body B of a milling tool. The cartridge 10 is connected to an upper surface 10a, a lower surface 10b, and a first side surface 10c, and a slit 10h that divides the cartridge 10 into a main body part 10j, a thin material portion 10k, and a connecting part 10m that connects the main body part and the thin material portion is formed in the cartridge. Furthermore, a screw hole 10n with second female threads is formed in order for a second male screw that passes through the slit 10h to screw into. Furthermore, wherein the second male screw travels forward, the relative position of the main body part 10j changes with regard to the thin material portion 10k.

First claim

The invention claimed is:

1. A cartridge to be mounted on a body of a milling tool,
the cartridge comprising:
an upper surface, a lower surface, at least a first side surface, a second side surface, a third side surface, and a fourth side surface joined to the upper surface and the lower surface, the fourth side surface being opposite the second side surface and joined to the first side surface and the third side surface; and
a holder part for holding a cutting insert;
wherein a slit that is connected to the upper surface, the lower surface, and the first side surface, and that divides the cartridge into a main body part having a thickness between the slit and the fourth side surface, a thin material portion having a thickness between the slit and the second side surface smaller than the thickness of the main body part, and a connecting part that connects the main body part and the thin material portion;
a through hole where a first male screw for retaining the body and the cartridge by screwing into first female threads provided in the body, passes through; and
a screw hole that connects with the slit and formed with second female threads in order for a second male screw to screw into and remain inside the cartridge,
are formed;
wherein a relative position of the main body part with regard to the thin material portion when the second male screw that screws into the second female threads is located at a first position in the axial direction of the second female threads, is different from a relative position of the main body part with regard to the thin material portion when the second male screw that screws into the second female threads is located at a second position in the axial direction of the second female threads;
a head part of the second male screw at the second position contacts the cartridge; and
the second side surface has a hole that connects to the slit formed therein.

2. The cartridge according to claim 1 , wherein
when the cartridge is mounted on the body, the lower surface has:
a first flat portion for contacting a surface of the body;
a second flat portion for contacting a surface of the body; and
a concave portion provided between the first flat portion and the second flat portion, formed by recessing from the first flat portion and the second flat portion.

3. The cartridge according to claim 1 , wherein the through hole for the first male screw to pass is open on the lower surface.

4. The cartridge according to claim 1 , wherein the second side surface is connected to the upper surface, the lower surface, and the first side surface; and the third side surface is connected to the upper surface, the lower surface, and the second side surface; and
when the cartridge is mounted on the body, the lower surface has:
a first flat portion for contacting a surface of the body;
a second flat portion for contacting a surface of the body; and
a concave portion provided between the third flat portion and the fourth flat portion, formed by recessing from the first flat portion and the second flat portion.

5. The cartridge according to claim 1 , wherein the screw hole has
a conical surface formed to pass through the axis of the second female threads, and for the head part of the second male screw to contact when the second male screw is at the second position, in one of a plurality of regions divided by the slit a.

6. The cartridge according to claim 5 , wherein the screw hole has one or a plurality of protrusions formed in another one of the plurality of regions divided by the slit in order for the head part of the second male screw to contact when the second male screw is at the second position.

7. The cartridge according to claim 6 , wherein the number of protrusions is two, and
the protrusions are provided at a position perpendicular to the slit, and at symmetrical positions with respect to a flat surface through which the axis of the second female threads passes.

8. The cartridge according to claim 1 , wherein
a second screw hole where the third female threads are formed is provided in the holder part for the third male screw to screw into in order to retain the cutting insert.

9. The cartridge according to claim 1 , wherein the through hole for the first male screw to pass through is open on the lower surface, has a cylindrical surface with an axis that is oblique to the lower surface and faces a shaft part of the first male screw, and an operating surface at an acute angle to the axis, upon which a force from the head part of the first male screw is applied.

10. The cartridge according to claim 9 , further comprising: the first male screw including in the head part a spherical surface facing the direction of the shaft part, and a washer with an inner side surface including a curved surface that contacts the spherical surface inserted between the head part of the first male screw and the operating surface.

11. The cartridge according to claim 9 , wherein the second side surface is configured so as to face a rotating shaft of the body of the milling tool, and
the operating surface is formed in the second side surface such that the angle formed between the perpendicular flat surface of the portion that contacts the body and a normal line to the operating surface is smaller than the angle formed between the perpendicular flat surface of the portion that contacts the body and the axis.

12. A milling tool, comprising a body on which a plurality of cartridges according to claim 1 are mounted.

Assignees

• Tungaloy Corp

Inventors

• Kondou Yuma

Classifications

• B23C5/2486

  where the adjustment is made by elastically deforming the toolholders · CPC title

• B23C5/2226 Primary

  for plate-like cutting inserts fitted on an intermediate carrier, e.g. shank fixed in the cutter body · CPC title

• B23C5/2472 Primary

  the adjusting means being screws · CPC title

• B23C2200/0455

  Square · CPC title

• B23C5/06

  Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface · CPC title