CN216421175U

CN216421175U - Pagoda-shaped cutter with detachable blade

Info

Publication number: CN216421175U
Application number: CN202122389189.6U
Authority: CN
Inventors: 薛明杰
Original assignee: Jiangsu Wanjin Precision Cutting Tool Co ltd
Current assignee: Jiangsu Wanjin Precision Cutting Tool Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-05-03
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a pagoda-shaped cutter with detachable blades, which comprises a handle and a drill body, wherein the handle is fixedly connected with the bottom of the drill body; the drill body is conical and is provided with a first cutting surface and a second cutting surface, and the first cutting surface and the second cutting surface are equal in size; a chip flowing area is arranged between the first cutting surface and the second cutting surface and comprises a first chip flowing area and a second chip flowing area; a plurality of groups of steps with successively larger diameters are arranged from the top to the bottom of the first cutting surface and the second cutting surface; each step comprises a first step surface and a second step surface, the second step surface is connected with a blade, and the blade changes along with the change of the height of the second step surface of each step. The utility model discloses the sharpness that is favorable to increasing the blade is favorable to protecting the cutting face and the cutting angle of cutter, increases the rate of utilization and the utilization ratio of whole cutter, and material saving reduces the loss.

Description

Pagoda-shaped cutter with detachable blade

Technical Field

The utility model relates to a cutter, cutter sword cut technical field, concretely relates to pagoda type cutter.

Background

When drilling holes in the wall of a thin plate or a pipe (circular pipe or square pipe) with a pagoda drill, which is also called a step drill, a manual operation is often performed by using a hand-held electric tool in a work place away from other metal cutting machines such as a drill press.

The pagoda drill disclosed in the Chinese patent (application number: 201922088933.1, publication number: CN 211939198U) has the technical characteristics that: the drill body part is integrally in a round table shape, multiple groups of steps with diameters sequentially increasing are arranged from the front end to the tail end of the drill body part, each group of steps comprises a first step surface and a second step surface, a chip groove for containing cutting scraps is arranged from the front end to the tail end of the drill body part, the multiple groups of steps are cut off and grooved by the chip groove, and a main cutting edge and an auxiliary cutting edge are respectively cut from the first step surface and the second step surface of each group of steps at the top ends of the side walls on the two sides of the chip groove; the main cutting edge and the auxiliary cutting edge are provided with end surface radial drop, and a first angle back and a main cutting edge back are respectively connected with the main cutting edge from near to far on the first step surface; and a second angle blade back and a secondary cutting edge back are respectively connected with the secondary cutting edge from near to far on the second step surface.

Referring to the above-mentioned published chinese patent, the following defects were found: the drill body is in a circular truncated cone shape, a main cutting edge and an auxiliary cutting edge are cut by a first step surface and a second step surface, cutting is carried out by the main cutting edge and the auxiliary cutting edge, and after the drill body is used for a long time, the edges of the main cutting edge and the auxiliary cutting edge are passivated and not sharp; at this time, the whole drill bit needs to be replaced, which causes waste.

SUMMERY OF THE UTILITY MODEL

The utility model discloses provide a simple structure to foretell weak point, can follow the blade changing, improve the tower type cutter of dismantling the blade of the utilization ratio and the efficiency of whole cutter.

The utility model discloses a realize like this: a pagoda-shaped cutter with a detachable blade comprises a cutter handle and a drill body, wherein the cutter handle is fixedly connected to the bottom of the drill body; the method is characterized in that: the drill body is conical and is provided with a first cutting surface and a second cutting surface, and the first cutting surface and the second cutting surface are equal in size; a chip flowing area is arranged between the first cutting surface and the second cutting surface and comprises a first chip flowing area and a second chip flowing area;

a plurality of groups of steps with successively larger diameters are arranged from the top to the bottom of the first cutting surface and the second cutting surface; each step comprises a first step surface and a second step surface, the second step surface is connected with a blade, and the blade changes along with the change of the height of the second step surface of each step.

The first cutting surface and the second cutting surface are provided with 15 steps with successively increased diameters, and the successively increased diameters are the same.

The utility model discloses the result is simple, and removable blade improves the utilization ratio of cutter. When the cutting tool is used, the cutting tool is connected with the cutting tool through the tool handle to drive the cutting tool to rotate, the diameter of the cutting tool is gradually increased due to the conical shape of the cutting tool, a proper second step surface can be selected according to the diameter of the cutting tool as required for cutting, after the proper second step surface is selected, blades are arranged on two adjacent second step surfaces, the blades are used for cutting after rotation, and waste materials after cutting can be dredged through the first flow scrap area and the second flow scrap area; after the work is finished, the blade is disassembled.

Preferably, the step has two 2 second step faces, and 2 second step faces are all equipped with the blade. When the rotary cutting machine is in rotary work, the first cutting surface and the second cutting surface are cut, the first cutting surface is provided with 2 second step surfaces, the second cutting surface is also provided with 2 second step surfaces, and a cutter is arranged on the surface contacting with the cut surfaces, so that the cutter is protected comprehensively, and the loss is reduced.

Preferably, the blade is connected to a second step surface of the step through a bolt, the second step surface is provided with a bolt hole, and the size of the bolt changes along with the size of the blade. The blade can be installed on the bolt hole of cutter fast through the bolt, the waste of reduction time, the landing of blade when avoiding the cutter to rotate causes the staff injury.

Preferably, the height of the blade exceeds 1 mm provided at the height of the second step face. The height of 1 millimeter is set, the problem that the shape of an object subjected to cutting is damaged due to the fact that the diameter is increased to the greatest extent is solved.

Preferably, the blade is trapezoidal in shape. The blade is higher than the bolt connecting surface of the blade by adhering the blade to the second step surface, so that the sharpness of the blade is increased, the work efficiency is improved, and dust generated during cutting can flow into the first flow scrap area and the second flow scrap area conveniently, so that the dust is prevented from flying.

Preferably, the first step surface is connected with a third step surface, and the third step surface is provided with a detachable protective layer. When finding the step face that is fit for the diameter with the cutter, the second step face is provided with the blade, protects the cutting angle of cutter, but when rotating, the third step face can contact with the object of being cut by the sword, also can wear and tear the cutter, and the installation detachable protective layer is protected in to the third step face, increases the all-round protection to the cutter, avoids leading to the out of use of whole cutter because of the harm of third step face, increases the utilization ratio of whole cutter.

The utility model has the advantages that: 1. to the cutter through setting up a plurality of steps formation, the second step face of step sets up the blade, and the blade is provided with into trapezoidally, is favorable to protecting the cutting face and the cutting angle of cutter, is favorable to increasing the sharpness of blade, increases the rate of utilization and the utilization ratio of whole cutter, material saving reduces the loss.

2. The detachable protective layer is arranged on the third step surface, so that the protection of the third step surface is increased, the damage to the third step surface is reduced, and the utilization rate is increased.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a schematic view of a first cutting surface.

Fig. 5 is an enlarged view at a.

The drill bit comprises a tool shank 1, a drill body 2, a first cutting surface 3, a second cutting surface 4, a first chip flow zone 5, a second chip flow zone 6, a step 7, a first step surface 71, a second step surface 72, a step 73, a third cutting surface, an insert 8, a bolt 9 and a protective layer 10.

Detailed Description

The present invention will be further summarized below with reference to the accompanying drawings.

A pagoda-shaped cutter with detachable blades comprises a cutter handle 1 and a drill body 2, wherein the drill body 2 is conical, the drill body 22 comprises a first cutting surface 3, a second cutting surface 4, a first chip flow area 4 and a second chip flow area 5, the first cutting surface 3 and the second cutting surface 4 are respectively provided with a step 7 with a diameter gradually increased, the increased diameter difference is equal, the step 7 comprises a first step surface 71, a second step surface 72 and a third step surface 73, one step 7 is provided with 2 second step surfaces 72, the 2 second step surfaces 72 are respectively connected with blades, the second step surfaces 72 are provided with threaded holes, and a bolt 9 screws the blades 8 on the second step surfaces 72 through the threaded holes; the position where the blade 8 exceeds the second step surface by 721 mm projects the cutting action of the blade 8. The blade 8 is arranged in a trapezoid shape, and a position higher than the height of the second step surface 72 is connected with the second step surface 72, so that the sharpness of the blade 8 is increased, and dust can flow into the first chip flow area 4 and the second chip flow area 5 conveniently. The third step surface 73 is provided with a detachable protective layer 10, so that damage to the third step surface 73 is reduced, and the utilization rate is increased.

Claims

1. A pagoda-shaped cutter with a detachable blade comprises a cutter handle (1) and a drill body (2), wherein the cutter handle (1) is fixedly connected to the bottom of the drill body (2); the method is characterized in that: the drill body (2) is conical, the drill body (2) is provided with a first cutting surface (3) and a second cutting surface (4), and the first cutting surface (3) and the second cutting surface (4) are equal in size; a chip flowing area is arranged between the first cutting surface (3) and the second cutting surface (4), and comprises a first chip flowing area (5) and a second chip flowing area (6);

a plurality of groups of steps (7) with sequentially increased diameters are arranged from the top to the bottom of the first cutting surface (3) and the second cutting surface (4); each step (7) comprises a first step surface (71) and a second step surface (72), the second step surface (72) is connected with a blade (8), and the blade (8) changes along with the change of the height of the second step surface (72) of each step.

2. A detachable-blade pagoda-type cutter as set forth in claim 1, wherein: the first cutting face (3) and the second cutting face (4) are provided with 15 steps (7) with successively increased diameters, and the successively increased diameter differences are the same.

3. A detachable-blade pagoda-type cutter as set forth in claim 1, wherein: the step has two 2 second step faces (72), and 2 second step faces (72) all are equipped with blade (8).

4. A detachable-blade pagoda-type cutter as set forth in claim 1 or 3, wherein: the blade (8) is connected to a second step surface (72) of the step through a bolt (9), a bolt (9) hole is formed in the second step surface (72), and the size of the bolt (9) changes along with the size of the blade (8).

5. A detachable-blade pagoda-type cutter as set forth in claim 1, wherein: the height of the blade (8) exceeds 1 mm of the height of the second step surface (72).

6. A detachable-blade pagoda-type cutter as set forth in claim 1, wherein: the blade (8) is trapezoidal in shape.

7. A detachable-blade pagoda-type cutter as set forth in claim 1, wherein: the first step surface (71) is connected with a third step surface (73), and the third step surface (73) is provided with a protective layer (10).