Ultrasonic cutting holder for honeycomb core

Patent metadata

Field	Value
Publication number	US-11220018-B2
Application number	US-201916968122-A
Country	US
Kind code	B2
Filing date	Feb 2, 2019
Priority date	Feb 24, 2018
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

The present disclosure discloses an ultrasonic cutting holder for a honeycomb core, including a holder, a swing mechanism, a transducer, a first-stage amplitude transformer, a second-stage amplitude transformer, an ultrasonic cutting tool, and an ultrasonic power transmission mechanism. The present disclosure provides an ultrasonic cutting holder for a honeycomb core with large amplitude output capacity and considering the interchangeability requirements among different vibration systems, which solves the problem of the applicability of ultrasonic cutting holder on the universal machine tool and improves the automation level of ultrasonic cutting.

First claim

The invention claimed is:

1. An ultrasonic cutting holder for honeycomb core, comprising a holder, a swing mechanism, a transducer, a first-stage amplitude transformer, a second-stage amplitude transformer, an ultrasonic cutting tool and an ultrasonic power transmission mechanism; wherein,
the holder comprises a holder standard interface at the upper end of the holder and a holder shell at the lower end of the holder; an outer wall of the holder shell is in a shape of stepped shaft, the holder shell comprising a small shaft segment, a middle shaft segment and a large shaft segment, which are successively connected; the small shaft segment is connected to the holder standard interface; the holder standard interface has a holder center cooling hole extending to the small shaft segment;
the swing mechanism comprises an upper end cover outside the small shaft segment, an lower end cover outside the large shaft segment and a fixed sleeve connected to the outer wall of the middle shaft segment by a bearing, the fixed sleeve being located between outer edges of the upper end cover and the lower end cover; the fixed sleeve has a fixed sleeve cooling hole, and the inner wall of the fixed sleeve has a fixed sleeve annular bulge pressing outer ring of the bearing on the lower end cover;
the first-stage amplitude transformer is cylindrical; outer wall of the lower end of the first-stage amplitude transformer has a flange plate extending outward and connected to inner wall of the large shaft segment; upper and lower ends of the flange plate are respectively provided with an annular vibration isolation groove, the two annular vibration isolation grooves being coaxial with the first-stage amplitude transformer and staggered with each other, and the flange plate is evenly arranged a plurality of flange cooling holes; the axis location of the first-stage amplitude transformer is provided with stepped holes running through the first-stage amplitude transformer, the stepped holes successively comprising a central cooling hole of the first-stage amplitude transformer, a taper hole of the first-stage amplitude transformer, a threaded hole connecting the first-stage and second-stage amplitude transformers and a tapered surface locating the first-stage and second-stage amplitude transformers;
the transducer comprises an inner-cooling preload bolt with a hollow structure, a back shroud and an annular ceramic chip group; the inner-cooling preload bolt is threaded connected to the central cooling hole of the first-stage amplitude transformer and presses the annular ceramic chip group at the rear end of the first-stage amplitude transformer through the back shroud;
the second-stage amplitude transformer successively comprises a connecting threaded shaft of the second-stage amplitude transformer, a matching tapered shaft of the second-stage amplitude transformer, a detachable shaft of the second-stage amplitude transformer and a connecting shaft of ultrasonic cutting tool; the connecting threaded shaft of the second-stage amplitude transformer is connected to the threaded hole connecting the first-stage and second-stage amplitude transformers; the outer wall of the matching tapered shaft of the second-stage amplitude transformer matches the tapered surface locating the first-stage and second-stage amplitude transformers; a lower end of the connecting shaft has a threaded blind hole connected to the ultrasonic cutting tool; the threaded blind hole comprises a threaded segment of the threaded blind hole and a taper hole at the opening of the threaded blind hole; a connecting part of the ultrasonic cutting tool has a tool threaded segment and a tool tapered segment respectively matching the threaded blind hole segment and the taper hole;
the ultrasonic power transmission mechanism comprises a positive electrode insulating ring collar jointing with the small shaft segment; an upper end of the positive electrode insulating ring is located below the upper end cover, and a lower end of the positive electrode insulating ring is provided with an annular bulge on a plane, the plane being formed by inner race of the bearing and a shaft shoulder between the small shaft segment and the middle shaft segment; the annular bulge presses the inner race of the bearing on a shaft shoulder between the middle shaft segment and the large shaft segment, and the annular bulge has a plurality of positive electrode insulating ring cooling holes; the small shaft segment is provided with a holder radial cooling hole communicated to the positive electrode insulating ring cooling holes; the positive electrode insulating ring collar joints with a positive electrode conducting ring whose lower end is located on the annular bulge; the positive electrode insulating ring has a positive electrode insulating ring wiring hole, and the small shaft segment has a holder wiring hole communicated to the positive electrode insulating ring wiring hole; the positive electrode conducting ring is provided with a wire whose the other end is connected to the positive electrode of the transducer through the positive electrode insulating ring wiring hole and the holder wiring hole; the upper end cover has an upper end cover threaded hole in which is provided with a hollow cylindrical negative electrode adapting piece; the upper end of the hollow cylindrical negative electrode adapting piece collar joints with bottom opening of a fixed end negative electrode sleeve; the upper end of the fixed end negative electrode sleeve is provided with a fixed end electrode adjusting spring to press the fixed end negative electrode sleeve on the upper end of the hollow cylindrical negative electrode adapting piece; inner bottom of the fixed end negative sleeve is provided with a matched fixed end insulator whose lower end is embedded with a fixed end positive electrode; the hollow cylindrical negative electrode adapting piece internally collar joints with a hollow cylindrical electrode insulating limit member whose upper inner wall is provided with a limit annular groove, and the hollow cylindrical electrode insulating limit member is provided with a positive electrode sleeve whose outer wall has a positive electrode sleeve flange radially matched with the limit annular groove, the positive electrode sleeve sliding along the axial direction of the limit annular groove through the positive electrode sleeve flange; the positive electrode sleeve is provided with a positive electrode electric brush extending from lower opening of the positive electrode sleeve and lower end of the hollow cylindrical electrode insulating limit member, and is also provided with a positive electrode electric brush adjusting spring pressing the positive electrode electric brush to the positive electrode conducting ring, and a positive electrode adjusting spring, which presses upper end of the positive electrode sleeve on the fixed end positive electrode, is arranged between the lower end of the positive electrode sleeve and the inner wall of the lower end of the hollow cylindrical electrode insulating limit member; there are gaps between the upper end cover and the small shaft segment, the upper end cover and the upper end of the positive electrode insulating ring, and the lower end cover and the large shaft segment.

2. The ultrasonic cutting holder for honeycomb core according to claim 1 , wherein the detachable shaft of the second-stage amplitude transformer is provided with a spanner groove; the outer wall of the connecting shaft of the ultrasonic cutting tool is conical, cylindrical, conical-cylindrical compound shape, or outer contoured surface formed by functions of exponential, step, catenary and Bezier curve.

3. The ultrasonic cutting holder for honeycomb core according to claim 1 , wherein a diameter ratio of the first-stage amplitude transformer and the second-stage amplitude transformer is

Assignees

• Univ Dalian Tech

Inventors

• Kang Renke
• Dong Zhigang
• Wang Yidan
• Zhu Xianglong
• Gao Shang
• Bao Yan

Classifications

• B32B2305/024

  Honeycomb · CPC title

• B06B1/0662 Primary

  with an electrode on the sensitive surface · CPC title

• B23B37/00

  Boring by making use of vibrations of ultrasonic frequency (working materials by subjecting the grinding tools or the abrading medium to vibration, e.g. grinding with ultrasonic frequency, B24B1/04) · CPC title

• B06B2201/73

  Drilling · CPC title

• B23D79/00

  Methods, machines, or devices not covered elsewhere, for working metal by removal of material (by combined operations B23D81/00; cutting by electron-beam B23K15/00, by laser beam B23K26/00; by electro-erosion B23H; tool holders for machine tools B23Q3/00; handles for hand implements B25G) · CPC title