CN205519812U - High -efficient shaping rose drill of sphere - Google Patents

Abstract

The utility model discloses a spherical surface high-efficiency forming ball head drill, which comprises: a handle and a blade, the diameter of the tail of the blade is larger than the diameter of the handle, the end of the blade is provided with a depression, and the head of the blade is From the bottom to the tail, a ball-end cutting edge, a first stepped cutting edge, a step angle, a second stepped cutting edge, and a knife back are provided in sequence. The ball-end cutting edge includes three cutting edges with the same structure, and the cutting edge is provided with a second An arc-shaped cutting plane, a second arc-shaped cutting surface, and a third arc-shaped cutting surface, and the chip flutes are respectively designed between the first stepped cutting edge and the second stepped cutting edge, between the second stepped cutting edge and the back of the tool, and Between the back of the knife and the tail of the blade, the angle formed by the step angle and the central axis of the handle of the knife is 45°. The cutting edge of the ball head part of the utility model is designed to be sharp, so that the cutting tool is suitable for high-speed cutting, and the spherical surface of the cutting tool is used for one-time forming, which reduces the processing procedure, and the welding form reduces the cost of the cutting tool, and is suitable for the production of large-diameter cutting tools.

Description

Spherical high-efficiency forming ball head drill

technical field

The utility model relates to the technical field of mechanical processing, in particular to a spherical surface high-efficiency forming ball head drill.

Background technique

A cutting tool is a tool used for cutting in mechanical manufacturing, also known as a cutting tool. The vast majority of knives are for machine use, but some are also for hand use. Since the knives used in mechanical manufacturing are basically used to cut metal materials, the term "knife" is generally understood as a metal cutting tool. As an important part of machining tools, drills are mainly used for hole machining. With the development of the machinery industry, users have put forward higher requirements for product processing quality, processing reliability, processing efficiency and tool delivery time. Requirements, the higher the strength and hardness of the workpiece material, the lower the cutting speed should be; on the contrary, the cutting speed should be higher. The better the cutting performance of the tool, the higher the cutting speed, so how to improve the cutting performance of the tool plays a key role in the processing speed of the workpiece. In the spherical surface forming process, it is usually necessary to use a variety of tools to cooperate with each other to form a spherical surface on a workpiece. The process is cumbersome, and the processing efficiency is low after multiple processes. If the cutting edge of the tool is not sharp enough, high-speed cutting cannot be achieved. , can not meet the requirements of high-efficiency workpiece processing in modern production.

Utility model content

Purpose of the utility model: In view of the problems and deficiencies in the above-mentioned prior art, the purpose of the utility model is to provide a spherical surface high-efficiency forming ball-end drill. The blade design of the ball head part is sharp, which makes the tool suitable for high-speed cutting. Using one tool to shape the spherical surface at one time reduces the processing steps.

Technical solution: In order to achieve the above purpose, the spherical surface high-efficiency forming ball head drill described in the utility model includes: a handle and a blade, the diameter of the tail of the blade is larger than the diameter of the handle, and the end of the blade is set There is a concave part, and the head to the tail of the blade is sequentially provided with a ball-end cutting edge, a first stepped cutting edge, a stepped angle, a second stepped cutting edge, and a knife back. The ball-end cutting edge includes three cutting edges with the same structure. The cutting edge is provided with a first arc-shaped cutting plane, a second arc-shaped cutting surface and a third arc-shaped cutting surface, and the chip removal grooves are respectively designed between the first stepped cutting edge and the second stepped cutting edge, and the second Between the two-step cutting edge and the back of the knife and between the back of the knife and the tail of the blade, the included angle between the step angle and the central axis of the handle is 45°.

Preferably, the handle and the blade are fixed by welding. Fully welded

The use of tool materials reduces the cost of the tool.

Preferably, the handle and the blade are made of hard alloy.

Preferably, the shank and the blade are concentrically designed. In cooperation with the machine tool spindle at high speed

When running, it can protect the tool well and prolong the service life of the tool.

Preferably, the length of the handle is 55mm-56mm, and the length of the blade is

78-79mm.

Preferably, the distance from the head of the blade to the step angle is 29-30mm.

Preferably, the outer surfaces of the shank and the blade are covered with a heat dissipation coating. Thermal coating

The design of the tool is used to reduce the heat generated by the tool when processing the workpiece, to avoid the tool from overheating and make the tool

produce brittleness.

It can be seen from the foregoing technical scheme that the beneficial effects of the utility model are:

The spherical surface high-efficiency forming ball head drill described in the utility model has a sharp blade design on the ball head part, which makes the tool suitable for high-speed cutting, uses one tool to form the spherical surface at one time, reduces the processing procedure, and the welding form reduces the cost of the tool, and is suitable for the production of large-diameter tools. .

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a left side view of Fig. 1 .

detailed description

Below in conjunction with accompanying drawing and specific embodiment, further illustrate the utility model.

Example

The spherical high-efficiency forming ball-end drill shown in Figure 1-2 includes: a handle 1 and a blade 2, the diameter of the tail of the blade 2 is greater than the diameter of the handle 1, and the end of the blade 2 is provided with The concave portion, the blade portion 2 is provided with a ball-end cutting edge 21, a first stepped cutting edge 22, a stepped angle 23, a second stepped cutting edge 24, and a knife back 25 in turn from the head to the tail of the blade portion 2. The ball-end cutting edge 21 includes Three cutting edges 211 with the same structure, the cutting edge 211 is provided with a first arc-shaped cutting plane 211a, a second arc-shaped cutting surface 211b and a third arc-shaped cutting surface 211c, and the chip removal grooves 26 are respectively designed on the first step Between the cutting edge 22 and the second stepped cutting edge 24, between the second stepped cutting edge 24 and the back 25, and between the back 25 and the tail of the blade 2, the step angle 23 and the central axis of the handle 1 form a The angle is 45°.

In this embodiment, the handle 1 and the blade 2 are fixed by welding.

In this embodiment, the handle 1 and the blade 2 are made of cemented carbide.

In this embodiment, the knife handle 1 and the blade portion 2 are concentrically designed.

In this embodiment, the length of the knife handle is 55mm-56mm, and the length of the blade is 78-79mm.

In this embodiment, the distance from the head of the blade 2 to the step angle 23 is 29-30 mm.

In this embodiment, the outer surfaces of the handle 1 and the blade 2 are covered with a heat dissipation coating.

The embodiments are only used to illustrate the utility model and are not intended to limit the scope of the utility model. After reading the utility model, those skilled in the art all fall within the limits of the appended claims of the application to the various equivalents of the utility model range.

Claims (7)

1. null1. sphere efficient molding rose drill，It is characterized in that: including: handle of a knife (1) and blade (2)，The diameter of described blade (2) afterbody is more than the diameter of handle of a knife (1)，The end of described blade (2) is provided with depressed part，Described blade (2) head is sequentially provided with bulb cutting edge (21) to afterbody、First ladder cutting edge (22)、Ladder angle (23)、Second ladder cutting edge (24)、The knife back (25)，Described bulb cutting edge (21) includes the cutting edge (211) that 3 structures are identical，Described cutting edge (211) is provided with the first arc milling plane (211a)、Second arc milling face (211b) and the 3rd arc milling face (211c)，Chip area (26) separately designs between the first ladder cutting edge (22) and the second ladder cutting edge (24)、Between second ladder cutting edge (24) and the knife back (25) and between the knife back (25) and blade (2) afterbody，Described ladder angle (23) is 45 ° with the central axis angle of handle of a knife (1).
2. Sphere the most according to claim 1 efficient molding rose drill, it is characterised in that: described handle of a knife (1) and blade (2) are fixed by welding manner.
3. Sphere the most according to claim 1 efficient molding rose drill, it is characterised in that: described handle of a knife (1) and blade (2) are made up of hard alloy material.
4. Sphere the most according to claim 1 efficient molding rose drill, it is characterised in that: described handle of a knife (1) and the design of blade (2) concentric.
5. Sphere the most according to claim 1 efficient molding rose drill, it is characterised in that: a length of 55mm-56mm of described handle of a knife, a length of 78-79mm of described blade.
6. Sphere the most according to claim 1 efficient molding rose drill, it is characterised in that: the distance of described blade (2) head to ladder angle (23) is 29-30mm.
7. Sphere the most according to claim 1 efficient molding rose drill, it is characterised in that: the outer surface of described handle of a knife (1) and blade (2) is covered with thermal dispersant coatings.