CN205888197U - End milling cutter - Google Patents

Abstract

End mill, including tool bit, shoulder and handle of a knife, shoulder one end is connected with the handle of a knife, the shoulder other end is connected with the tool bit portion, the tool bit includes side cutting edge and end cutting edge, the side cutting edge sets up in the tool bit lateral part, end cutting edge sets up at the tool bit tip, the side cutting edge is equipped with three and is the heliciform, be equipped with the chip groove between the side cutting edge, be equipped with first relief angle, second relief angle and third relief angle on the end cutting edge. The utility model discloses be fit for big cutting volume processing, through be equipped with first relief angle, second relief angle and third relief angle on the end cutting edge, increased and held the bits space, make iron fillings can in time discharge, reduced the cutting resistance and the wearing and tearing volume of cutter to the life of cutter has been prolonged, because hold near big iron fillings in bits space are difficult to block up cutter and machined surface, can directly contact with the work piece when making the cutter cutting, thereby the machining precision of work piece has been improved.

Description

end mill

technical field

The utility model relates to a cutting tool, in particular to an end milling cutter.

Background technique

A milling cutter is a rotating tool with one or more teeth for milling. When working, each knife tooth cuts off the allowance of the workpiece intermittently in turn. Milling cutters are mainly used for machining planes, steps, grooves, forming surfaces and cutting off workpieces on milling machines. The end mill is used to process grooves and stepped surfaces, etc. The cutter teeth are on the circumference and end faces, and cannot be fed in the axial direction during work. Axial infeed is possible when the end mill has end teeth that pass through the center. There are two relief angles on the bottom edge of ordinary end mills. Ordinary end mills are not suitable for large-scale machining. Due to the small chip space, iron chips cannot be discharged in time, and it will increase the cutting resistance of the tool, making the tool easy to wear , reducing the service life of the tool, and the iron filings that are not discharged in time are easy to block near the tool and the processing surface. When the tool is being processed, the iron filings will hinder the contact between the tool and the processing surface, thereby reducing the machining accuracy of the workpiece.

Utility model content

The purpose of the utility model is to provide an end mill which can not only prolong the service life of the tool but also improve the processing precision of the workpiece when processing a large cutting amount.

In order to achieve the above object, the technical scheme adopted in the utility model is as follows:

End milling cutter, comprising a cutter head, a shoulder and a tool handle, one end of the shoulder is connected to the handle, the other end of the shoulder is connected to the cutter head, the cutter head includes a side cutting edge and a bottom cutting edge, the The side blades are arranged on the side of the cutter head, and the bottom blade is arranged on the end of the cutter head. There are first relief, second relief and third relief.

The first relief angle is 25°.

The second relief angle is 67°.

The third relief angle is 95°.

The beneficial effects of the utility model are: the utility model is suitable for large-cut machining, and the first back angle, the second back angle, and the third back angle are provided on the bottom cutting edge, which increases the chip-holding space so that the iron chips can be processed in time. Discharge chips that will not block the cutting tool, reduce the cutting resistance and wear of the tool, thereby prolonging the service life of the tool. Because of the large chip space, the iron chips are not easy to block near the tool and the processing surface, so that the tool can be cut. Direct contact with the workpiece, thus improving the machining accuracy of the workpiece.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

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

Fig. 2 is an enlarged schematic diagram of the end of the cutter head of the present invention.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described:

The end mill as shown in Figure 1 includes a cutter head 1, a shoulder 2 and a handle 3, one end of the shoulder 2 is connected to the handle 3, and the other end of the shoulder 2 is connected to the cutter head 1, Described cutter head 1 comprises side blade 4 and bottom blade 5, and described side blade 4 is arranged on the side of cutter head 1, and described bottom blade 5 is arranged on the end of cutter head, and described side blade 4 is provided with three and is spiral Shape, a chip flute 6 is provided between the side cutting edges 4 , and a first relief angle 7 , a second relief angle 8 and a third relief angle 9 are provided on the bottom cutting edge 5 . The utility model is provided with a first relief angle 7, a second relief angle 8 and a third relief angle 9 on the bottom blade 5, the first relief angle is 25°, and the second relief angle is 67°, so The third rear angle is 95°.

The utility model is suitable for large-scale machining. By setting the first relief angle, the second relief angle and the third relief angle on the bottom cutting edge, the chip-holding space is increased, the iron filings can be discharged in time, and the cutting resistance of the tool is reduced. and wear amount, thereby prolonging the service life of the tool. Due to the large chip space, iron chips are not easy to block near the tool and the processing surface, so that the tool can directly contact the workpiece when cutting, thereby improving the machining accuracy of the workpiece.

The above description does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the scope of the technical solution of the present invention.

Claims (4)

1. slotting cutter it is characterised in that: include cutter head, shoulder and handle of a knife, described shoulder one end is connected with handle of a knife, described shoulder The other end is connected with cutter head, and described cutter head includes side tool sword and counteredge, and described side tool sword is arranged at cutter head sidepiece, described bottom Blade is arranged on cutter head end, and described side tool sword is provided with three and in the shape of a spiral, is provided with chip area between described side tool sword, described Counteredge is provided with the first relief angle, the second relief angle and the 3rd relief angle.

2. slotting cutter according to claim 1 it is characterised in that: described first relief angle be 25 °.

3. slotting cutter according to claim 1 it is characterised in that: described second relief angle be 67 °.

4. slotting cutter according to claim 1 it is characterised in that: described 3rd relief angle be 95 °.