CN217862123U - Graphite ball cutter - Google Patents

Abstract

The utility model discloses a graphite ball cutter, which comprises a ball cutter body. The ball cutter body includes a cutter head and a handle. The cutter head is provided with a diamond coating formed on its surface by chemical vapor deposition. There is a connecting part between the head and the knife handle, the section of the connecting part is in the shape of an isosceles trapezoid, and one end of the connecting part is connected to the knife handle, and the other end of the connecting part is connected to the knife head. The cutter head is equipped with a diamond coating formed on its surface by chemical vapor deposition, so that the ball cutter has high hardness, excellent wear resistance, good self-lubrication and chemical stability, high thermal conductivity and low The thermal expansion coefficient is stable, the cutting edge is very sharp, the workpiece is not easy to deform, and the CVD diamond coated ball cutter has better processing finish, long service life and longer replacement time, which makes the processing cost lower.

Description

Graphite Ball Knife

technical field

The utility model relates to the technical field of ball cutters, in particular to graphite ball cutters.

Background technique

Milling cutter is used for milling. It is a rotating tool with one or more cutter teeth. When working, each cutter tooth cuts off the allowance of the workpiece intermittently. Milling cutter is mainly used to process planes, steps, and grooves on milling machines. Slots, forming surfaces and cutting workpieces, etc.;

The ball cutter is a ball end milling cutter, which is one of many types of milling cutters. It is mostly used for semi-finishing and finishing milling of curved surfaces. The existing ball cutters have different specifications and are used in different milling machines and working scenarios. Next, the thinner the cutter head, the shorter the handle, which is suitable for processing smaller workpieces, and vice versa;

When processing graphite surface modules, PCD tools are usually used for processing. However, the service life of PCD tools is short, and the use effect and tool performance are poor. Therefore, it is urgent to design a ball cutter with higher hardness.

Utility model content

In order to overcome the shortcomings of the existing technical solutions, the utility model provides a graphite ball cutter, which can solve the problems raised by the background technology.

The technical solution adopted by the utility model to solve its technical problems is: a graphite ball cutter, comprising a ball cutter body, the ball cutter body including a cutter head and a handle, and the cutter head is provided with a carbon fiber on its surface by chemical vapor deposition. Formed diamond coating, a connecting portion is provided between the cutter head and the knife handle, the section of the connecting portion is in the shape of an isosceles trapezoid, and one end of the connecting portion is connected to the handle of a knife, and the other end of the connecting portion is connected to the knife handle. The heads are connected to each other.

Preferably: the ball cutter body further includes a hollow sleeve, and the tail end of the knife handle is arranged inside the sleeve and is detachably connected to it.

Preferably: the tail end of the handle is formed with external threads, and the inner wall of the sleeve is formed with internal threads, and the handle is threadedly connected with the sleeve.

Preferably: the upper and lower ends of the sleeve are provided with bolt holes and bolts, and after the bolts pass through the bolt holes, they contact with the tail end of the handle.

Preferably, a connecting shaft is provided between the connecting portion and the cutter head, and a protruding heat dissipation block is provided on the outer surface of the connection shaft, and a layer of heat dissipation coating is coated on the surface of the heat dissipation block.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model sets the diamond coating formed on the surface of the cutter head by the chemical vapor deposition method, so that the ball cutter has high hardness, excellent wear resistance, good self-lubrication and chemical stability, and high Thermal conductivity and low thermal expansion coefficient, stable work, very sharp cutting edge, not easy to deform the workpiece, and the CVD diamond coating ball cutter has better processing finish, long service life and longer replacement time, which makes the processing cost lower. .

Description of drawings

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

Fig. 2 is another structural schematic diagram of the utility model.

Labels in the figure:

A cutter head 1, a cutter handle 2, a sleeve 3, a diamond coating 4, a connecting shaft 5, a cooling block 6, a connecting part 7, an external thread 8, a bolt 9, and a cooling coating 10.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Below in conjunction with Fig. 1-2, the graphite ball cutter of the present utility model is described in detail: the graphite ball cutter includes a ball cutter body, and the ball cutter body includes a cutter head 1 and a handle 2, and the cutter head 1 is provided with a chemical The diamond coating 4 formed on the surface by the vapor deposition method makes the ball cutter have high hardness, excellent wear resistance, good self-lubrication and chemical stability, high thermal conductivity and low thermal expansion coefficient, The work is stable, the cutting edge is very sharp, the workpiece is not easy to deform, and the CVD diamond coated ball cutter has better processing finish, long service life, and longer replacement time, so that the processing cost becomes lower. The cutter head 1 and the handle 2 is provided with a connecting portion 7, the cross-section of the connecting portion 7 is isosceles trapezoidal, and one end of the connecting portion 7 is connected to the handle 2, and the other end of the connecting portion 7 is connected to the cutter head 1.

The ball knife body also includes an inner hollow sleeve 3, the tail end of the knife handle 2 is arranged inside the sleeve 3 and is detachably connected with it, the sleeve 3 is connected with an external connecting piece, and the external connecting piece is The drive assembly or coupling assembly is mainly used to drive the tool holder and the cutter head to rotate at high speed through the sleeve.

The tail end of the handle 2 is formed with an external thread 8, and the inner wall of the sleeve 3 is formed with an internal thread. The handle 2 is threaded with the sleeve 3, and the sleeve 3 and the handle 2 are connected by thread fit. The connection is tightened, thereby improving the connection stability between the handle 2 and the sleeve 3 .

The upper and lower ends of the sleeve 3 are provided with bolt holes and bolts 9. After the bolts 9 pass through the bolt holes, they contact the tail end of the handle 2, so the upper and lower ends of the handle are supported by the bolts. The stability of the connection between the handle and the external connecting piece is further improved, and the use safety of the ball knife is improved.

A connecting shaft 5 is provided between the connecting portion 7 and the cutter head 1, and a convex heat dissipation block 6 is provided on the outer surface of the connecting shaft 5, and a heat dissipation coating is coated on the surface of the heat dissipation block 6. 10. Through the heat dissipation block and the heat dissipation coating, the temperature generated by the cutter head during operation can be greatly reduced, and the service life of the cutter head can be prolonged.

Working principle: By setting the diamond coating formed on the surface of the cutter head by chemical vapor deposition, the ball cutter has high hardness, excellent wear resistance, good self-lubrication and chemical stability, and high Thermal conductivity and low thermal expansion coefficient, stable work, very sharp cutting edge, not easy to deform the workpiece, and the CVD diamond coating ball cutter has better processing finish, long service life and longer replacement time, which makes the processing cost lower. .

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. Graphite ball sword, its characterized in that: including the ball sword body, the ball sword body includes tool bit and handle of a knife, the tool bit is equipped with the diamond coating that forms on its surface through chemical vapor deposition method, be equipped with connecting portion between tool bit and the handle of a knife, the cross-section of connecting portion is isosceles trapezoid shape, and the one end and the handle of a knife interconnect of connecting portion, the other one end and the tool bit interconnect of connecting portion.

2. The graphite spherulite knife of claim 1, wherein: the ball cutter body further comprises a hollow sleeve, and the tail end of the cutter handle is arranged in the sleeve and is detachably connected with the sleeve.

3. The graphite spherulites of claim 2, wherein: the tail end of the knife handle is formed with external threads, the inner wall of the sleeve is formed with internal threads, and the knife handle is in threaded connection with the sleeve.

4. The graphite spherulites of claim 2, wherein: bolt holes and bolts are arranged at the upper end and the lower end of the sleeve, and the bolts penetrate through the bolt holes and then are in contact with the tail end of the cutter handle.

5. The graphite spherulites of claim 1, wherein: the connecting shaft is arranged between the connecting part and the tool bit, the outer surface of the connecting shaft is provided with a convex radiating block, and the surface of the radiating block is coated with a layer of radiating coating.

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