CN217801412U

CN217801412U - Cutter with cutting edge provided with groove

Info

Publication number: CN217801412U
Application number: CN202222052639.7U
Authority: CN
Inventors: 李楠; 朱永; 黄茜
Original assignee: Dalian Changfeng Industrial Corp
Current assignee: Dalian Changfeng Industrial Corp
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-11-15
Anticipated expiration: 2032-08-04

Abstract

The utility model provides a sword that separates of blade area recess belongs to the aeronautical manufacturing and maintains technical field. The unclamping tool comprises a handle, a connecting rod and a cutting edge which are sequentially connected, wherein the cutting edge consists of two main inclined planes and two side faces; the upper surface and the lower surface of the cutting edge are respectively two main inclined planes, and the front surface and the rear surface of the cutting edge are respectively two side surfaces; a groove is arranged at the central position of the front end of the cutting edge; when the screw is disassembled, the groove at the front end of the cutting edge is clamped on the fuse hole in the screw notch, so that the unclamping knife is perpendicular to the plane of the screw head, the cutting edge is fully inserted into the notch of the screw head, and the unclamping knife is rotated clockwise in the direction perpendicular to the screw head, so that the screw can be rapidly disassembled. The utility model has simple and small structure, and is particularly suitable for the screws with fuse holes on the notches of the heads of the screws on the airplanes; the utility model discloses a structure formula structure as an organic whole need not assemble the use, should not damage and can use by high frequency.

Description

Cutter with cutting edge provided with groove

Technical Field

The utility model belongs to the technical field of the aviation is made and is maintained, a sword that separates of blade area recess is related to.

Background

In the manufacturing and maintenance process of the airplane, a plurality of fasteners such as screws are arranged, and some screws are required to be fastened, so that fuse holes are arranged in notches at the heads of the screws for installing fuses, and the screws are prevented from loosening after vibration. The depth of the notch at the upper portion of the fuse hole is reduced by the presence of the fuse hole in the notch, while a protrusion is formed in the middle of the notch (as shown in fig. 1-4). When the screw is disassembled by using the common unclamping tool, the contact depth of the cutting edge of the unclamping tool and the notch of the screw is insufficient, so that the cutting edge of the unclamping tool slides out of the notch of the head of the screw when the screw is disassembled, operators can scratch easily, the working efficiency is influenced, and the scrapped number of the disassembled screws is increased. There is therefore a need for a suitable tool to meet the requirements of disassembly.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a sword that separates of blade area recess avoids the condition that the sword blade that separates appears from screw head notch roll-off in the decomposition process through simple operation.

The technical scheme of the utility model is that:

a knife with a cutting edge provided with a groove comprises a handle 6, a connecting rod 1 and a cutting edge 2 which are connected in sequence.

Wherein, the cutting edge 2 consists of two main inclined planes 4 and two side surfaces 5; the upper surface and the lower surface of the cutting edge 2 are respectively two main inclined planes 4, and the included angle of the two main inclined planes 4 is 5-15 degrees; the front and back surfaces of the cutting edge 2 are two side surfaces 5 respectively, and the included angle formed by the two side surfaces 5 is 15-40 degrees. The central position of the front end of the cutting edge 2 is provided with a groove 3, and the width of the groove 3 is 1/5-1/3 of the length of the front end of the cutting edge 2.

Further, the central axes of the handle 6, the connecting rod 1, the cutting edge 2 and the groove 3 are positioned on a straight line.

Further, the included angle between the two main inclined surfaces 4 of the cutting edge 2 is 13 °.

Furthermore, the angle formed by the two side surfaces 5 of the cutting edge 2 is 25 °.

Furthermore, the width of the groove 3 is 1/4 of the length of the front end of the cutting edge 2.

The utility model has the advantages that:

(1) The utility model has the advantages of simple structure is small and exquisite, and the specially adapted is used for decomposing the screw of head notch area fuse hole on the aircraft.

(2) The utility model discloses a structure formula structure as an organic whole need not assemble the use, should not damage and can use by high frequency.

Drawings

Fig. 1 is an isometric view of a screw.

Fig. 2 is a front view of the screw.

Fig. 3 is a cross-sectional side view of the screw.

Fig. 4 is a half sectional view of the screw.

Fig. 5 is a top view of the whole structure of the present invention.

Fig. 6 is a front view of the overall structure of the present invention.

Wherein: 1, a connecting rod; 2, cutting edges; 3, grooves; 4, a main inclined plane; 5, side surface; 6 a handle.

Detailed Description

The following examples and drawings are provided to further explain the embodiments of the present invention, but are not intended to limit the present invention.

As shown in fig. 5 to 6, the present embodiment provides a slotting cutter with a grooved cutting edge, which comprises a handle 6, a connecting rod 1 and a cutting edge 2.

The handle 6, the connecting rod 1 and the cutting edge 2 are sequentially connected together by adopting a welding or integrated forming method.

Wherein, the cutting edge 2 consists of two main inclined planes 4 and two side surfaces 5; the upper surface and the lower surface of the cutting edge 2 are respectively two main inclined planes 4, and the included angle of the two main inclined planes 4 is 13 degrees; the front and back surfaces of the cutting edge 2 are two side surfaces 5 respectively, and the included angle formed by the two side surfaces 5 is 25 degrees. The central position of the front end of the cutting edge 2 is provided with a groove 3, and the width of the groove 3 is 1/4 of the length of the front end of the cutting edge 2.

When the screwdriver is used, firstly, the groove 3 at the front end of the cutting edge 2 is clamped on a fuse hole in a screw notch, then the screwdriver is made to be vertical to the plane of the screw head, the cutting edge 2 is fully inserted into the notch of the screw head, and then the screwdriver is rotated clockwise in the direction vertical to the screw head, so that the screw can be rapidly disassembled.

In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutter with a groove on a cutting edge is characterized by comprising a handle (6), a connecting rod (1) and a cutting edge (2) which are connected in sequence;

the cutting edge (2) consists of two main inclined planes (4) and two side surfaces (5); the upper surface and the lower surface of the cutting edge (2) are respectively provided with two main inclined planes (4), and the included angle of the two main inclined planes (4) is 5-15 degrees; the front surface and the rear surface of the cutting edge (2) are respectively two side surfaces (5), and the included angle formed by the two side surfaces (5) is 15-40 degrees; the center of the front end of the cutting edge (2) is provided with a groove (3), and the width of the groove (3) is 1/5-1/3 of the length of the front end of the cutting edge (2).

2. A knife with a grooved cutting edge according to claim 1, characterized in that the central axes of the handle (6), the connecting rod (1), the cutting edge (2) and the groove (3) are located on a straight line.

3. A cutting edge grooving tool according to claim 1 or 2 wherein the angle between the two major bevels (4) of the cutting edge (2) is 13 °; the angle formed by the two side surfaces (5) is 25 degrees.

4. A knife edge grooved release knife according to claim 1 or 2, characterized in that the width of the groove (3) is 1/4 of the length of the front end of the cutting edge (2).

5. A knife edge grooved release knife according to claim 3, characterized in that the width of the groove (3) is 1/4 of the length of the front end of the cutting edge (2).