Deburring apparatus and deburring method

Patent metadata

Field	Value
Publication number	US-12090560-B2
Application number	US-202117182327-A
Country	US
Kind code	B2
Filing date	Feb 23, 2021
Priority date	Oct 27, 2020
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

The present disclosure provides a deburring apparatus and a deburring method that does not require a positioning engagement part that is engaged with a fixed part of a machine tool. The deburring apparatus ( 10 ) includes a housing ( 1 ) with a shank ( 11 ), a transmission rod ( 3 ), a recovery rod ( 5 ), a tilting shaft ( 4 ), a spring ( 6 ), a holder ( 7 ), and a rotary-to-rectilinear motion conversion mechanism ( 9 ) with a plunger ( 8 ). The spring forces the recovery rod toward the tilting shaft. The holder for fixing the cutter ( 101 ) is arranged on the tilting shaft in a manner rotatable through a predetermined rotation angle. The rotary-to-rectilinear motion conversion mechanism separates the first flange portion from the second flange portion and brings the plunger into contact with the recovery rod on the tilting axis ( 43 ) when the holder rotates in a direction opposite to the rotation direction of the shank ( 11 ).

First claim

What is claimed is:

1. A deburring apparatus, comprising:
a housing which includes a shank, a seat surface, and a mechanism chamber arranged along a shank-axis;
a recovery rod including a first flange portion, the recovery rod being reciprocable along the shank-axis;
a tilting shaft including a second flange portion opposite to the first flange portion and a spherical bush supported on the seat surface, the spherical bush having a tilting center on the shank-axis, the tilting shaft being arranged along a tilting axis passing through the tilting center and tiltable around the tilting center;
an elastic member which forces the recovery rod toward the tilting shaft;
a holder arranged on the tilting shaft in a manner rotatable through a predetermined rotation angle relative to the tilting shaft, the holder fixing a cutter;
a rotary-to-rectilinear motion conversion mechanism including a plunger movable along the tilting axis on the holder, the rotary-to-rectilinear motion conversion mechanism separating the first flange portion from the second flange portion and bringing the plunger into contact with the recovery rod on the tilting axis when the holder rotates in a direction opposite to a rotation direction of the shank; and
a rotation transmission mechanism which transmits a rotation of the housing to the tilting shaft.

2. The deburring apparatus according to claim 1 , wherein the rotary-to-rectilinear motion conversion mechanism brings the plunger into contact with the recovery rod at the tilting center when the holder has rotated through the rotation angle in the direction opposite to the rotation direction of the shank.

3. The deburring apparatus according to claim 2 , wherein the rotary-to-rectilinear motion conversion mechanism includes:
an anti-rotation mechanism which restricts a rotation of the plunger relative to the holder;
a cam groove spirally shaped in the plunger; and
a cam pin arranged in the tilting shaft in a manner of penetrating through the tilting shaft and the cam groove perpendicularly to the tilting axis, the cam pin sliding in the cam groove.

4. The deburring apparatus according to claim 3 , wherein the anti-rotation mechanism includes:
a long hole extending along an axial direction of the plunger in a manner of penetrating through the plunger in a radial direction; and
an anti-rotation pin which penetrates through the long hole and is arranged in the holder in a manner of extending in the radial direction.

5. The deburring apparatus according to claim 1 , wherein the rotary-to-rectilinear motion conversion mechanism includes:
an anti-rotation mechanism which restricts a rotation of the plunger relative to the holder;
a cam groove spirally shaped in the plunger; and
a cam pin arranged in the tilting shaft in a manner of penetrating through the tilting shaft and the cam groove perpendicularly to the tilting axis, the cam pin sliding in the cam groove.

6. The deburring apparatus according to claim 5 , wherein the anti-rotation mechanism includes:
a long hole extending along an axial direction of the plunger in a manner of penetrating through the plunger in a radial direction; and
an anti-rotation pin which penetrates through the long hole and is arranged in the holder in a manner of extending in the radial direction.

7. The deburring apparatus according to claim 1 , wherein the rotation transmission mechanism includes:
a receiving portion arranged in the second flange portion and penetrated by transmission rods respectively; and
a plurality of the transmission rods arranged around the shank-axis in parallel with the shank-axis and fixed to the mechanism chamber.

8. The deburring apparatus according to claim 7 , wherein each of the plurality of transmission rods includes a bulge portion arranged on a plane perpendicular to the shank-axis and passing through the tilting center; and the receiving portion includes an abutting surface that abuts against the bulge portion.

9. The deburring apparatus according to claim 7 , wherein the recovery rod includes a plurality of guide holes arranged in the first flange portion and penetrated respectively by the plurality of transmission rods, and the recovery rod is guided in a manner of sliding along the plurality of transmission rods in the plurality of guide holes.

10. The deburring apparatus according to claim 7 , wherein the recovery rod is guided by the plurality of transmission rods inserted in the plurality of guide holes formed in the first flange portion and the housing, and moves in the shank-axis direction.

11. The deburring apparatus according to claim 1 , wherein the rotation transmission mechanism includes:
a rolling groove which is arranged on one of the seat surface and the spherical bush, and is evenly arranged around the shank-axis on a plane passing through the shank-axis;
a plurality of ball holding holes which are arranged on the other of the seat surface and the spherical bush, and are evenly arranged around the tilting axis on a plane passing through the tilting axis; and
a ball which is held between the rolling groove and the ball holding hole and rolls between the rolling groove and the ball holding hole.

12. The deburring apparatus according to claim 1 , wherein the rotation transmission mechanism includes:
a rolling groove which is arranged on a spherical surface centered at the tilting center, and is evenly arranged around the shank-axis on a plane passing through the shank-axis;
a ball holding hole which is arranged at an outer peripheral portion of the second flange portion, and is arranged on a plane passing through the tilting center and perpendicular to the shank-axis; and
a ball which is held between the rolling groove and the ball holding hole and rolls between the rolling groove and the ball holding hole.

Assignees

• Sugino Mach

Inventors

• Muto Mitsuru
• Hori Tomoaki

Classifications

• Y10T408/665

  Universal or flexible drive connection to rotate Tool · CPC title

• B23B2220/08

  Deburring · CPC title

• B23B31/08

  holding tools yieldably · CPC title

• B23B51/101 Primary

  Deburring tools (B23B51/103 takes precedence) · CPC title

• B23C3/12 Primary

  Trimming or finishing edges, e.g. deburring welded corners · CPC title