CN109290611A

CN109290611A - A kind of high feeding SEF fluted drill

Info

Publication number: CN109290611A
Application number: CN201810102801.7A
Authority: CN
Inventors: 单延松
Original assignee: Suzhou Heng Bit Precision Tool Co Ltd
Current assignee: Suzhou Heng Bit Precision Tool Co Ltd
Priority date: 2018-02-01
Filing date: 2018-02-01
Publication date: 2019-02-01

Abstract

Cutting is not participated in processing in order to solve the chisel edge 232 of existing fluted drill, it is processed in the form of extruding, scarce capacity of feeling relieved loads problem bigger than normal so as to cause processing, the present invention proposes a kind of high feeding SEF fluted drill, its SEF shape chisel edge that chisel edge 232 of existing fluted drill is become protruding from drill bit part, its bit location for being conducive to fixed fluted drill, so that drill bit chisel edge in processing is capable of the participation cutting of active, and it is processed with cutting state, to reduce processing load, and it improves and processes the 30%~100% of feeding under the same terms.

Description

A kind of high feeding SEF fluted drill

Technical field

The present invention relates to cutting tool fields, are specifically related to a kind of high feeding SEF fluted drill.

Background technique

Fluted drill is the rotary cutting by its relatively fixed axis with the tool of the circular hole of drilling workpiece, because of its chip pocket Spiral likeness in form fried dough twist and gain the name.Fluted drill is most widely used a kind of cutter in process tool, it is high in machining efficiency, plus Work is high-quality.Fluted drill structure in the prior art is similar, has a single function, and there are many shortcoming and defect.Standard fluted drill by Shank 1 and working portion 2 form, and working portion 2 includes chip space 21, side edge 22 and apex point 23, wherein chip space 21 and side edge 22 are distributed in the direction of the central axis of drill bit, and apex point 23 is connect with chip space 21 and side edge 22, wherein contain chisel edge on apex point 23 232, the chisel edge 232 of existing fluted drill does not participate in cutting in processing, is processed in the form of extruding, scarce capacity of feeling relieved It is bigger than normal so as to cause processing load.

Summary of the invention

In order to solve problem above, the present invention proposes a kind of high feeding SEF fluted drill, by the chisel edge of existing fluted drill 232 become protruding from the SEF shape chisel edge of drill bit part, are conducive to the bit location of fixed fluted drill, so that drill bit exists Chisel edge is capable of the participation cutting of active when processing, and is processed with cutting state, to reduce processing load, and improves phase The 30%~100% of feeding is processed under the conditions of.

A kind of high feeding SEF fluted drill comprising: shank 1 and working portion 2 form, and working portion 2 includes chip space 21, side edge 22 and apex point 23, wherein chip space 21 and side edge 22 are distributed in the direction of the central axis of drill bit, apex point 23 and chip space 21 and side edge 22 connect, it is characterised in that: the SEF chisel edge 231 on apex point 23 containing protrusion.

Further, the length of the SEF chisel edge 231 is 0.1mm~15.0mm.

Further, the width of the SEF chisel edge 231 is 0.1mm~10.0mm.

Further, the height of 231 protrusion of SEF chisel edge is 0.05mm~10.0mm.

Further, the material of the high feeding SEF fluted drill is hard alloy or stainless steel.

Further, the high feeding SEF fluted drill contains 2~6 blades.

Further, there are AP coating and/or TiAlN coating in the high feeding SEF fluted drill surface.

Further, the point of a knife of the high feeding SEF fluted drill contains protection structure, as the angle R or chamfer angle technique produce Raw more planes etc., so that point of a knife becomes mellow and full structure.

Further, the high feeding SEF fluted drill can be step drill.

Using high feeding SEF fluted drill of the invention, become the chisel edge 232 of existing fluted drill to protrude from apex point portion The SEF shape chisel edge divided is conducive to the bit location of fixed fluted drill, so that drill bit chisel edge in processing is capable of active Cutting is participated in, and is processed with cutting state, to reduce processing load, and improves processing feeding under the same terms 30%~50%.

Detailed description of the invention:

Specific embodiment is further described with reference to the accompanying drawing, in which:

Fig. 1 is the structural schematic diagram of fluted drill.

Fig. 2 is the left view of the working portion of traditional fluted drill.

Fig. 3 is the left view of the working portion of the fluted drill of the invention containing SEF chisel edge.

Primary structure number explanation:

Shank	1
		Working portion	2
Chip space	21
		Side edge	22
Apex point	23
		Chisel edge	232
SEF chisel edge	231

The present invention that the following detailed description will be further explained with reference to the above drawings.

Case 1 is embodied:

As shown in Figure 1 it is the structural schematic diagram of fluted drill, is illustrated in figure 2 the left view of the working portion of traditional fluted drill Figure, traditional fluted drill are made of shank 1 and working portion 2, and working portion 2 includes chip space 21, side edge 22 and apex point 23, Middle chip space 21 and side edge 22 are distributed in the direction of the central axis of drill bit, and apex point 23 is connect with chip space 21 and side edge 22, wherein Contain chisel edge 232 on apex point 23, the chisel edge 232 of existing fluted drill is not participated in cutting in processing, carried out in the form of extruding Processing, scarce capacity of feeling relieved are bigger than normal so as to cause processing load.

As shown in Figure 1 it is the structural schematic diagram of fluted drill, is illustrated in figure 3 a left side for high feeding SEF fluted drill of the invention View.High feeding SEF fluted drill of the invention comprising: shank 1 and working portion 2 form, and working portion 2 includes chip space 21, side edge 22 and apex point 23, wherein chip space 21 and side edge 22 are distributed in the direction of the central axis of drill bit, apex point 23 and chip space 21 and side edge 22 connect, it is characterised in that: the SEF chisel edge 231 on apex point 23 containing protrusion.

Wherein, the length of the SEF chisel edge 231 is 3.0mm, and width 2.1mm, raised height is 1.1mm, described The material of high feeding SEF fluted drill be hard alloy, AP coating is contained on surface, and fluted drill contains 2 blades.

Case 2 is embodied:

Wherein, the length of the SEF chisel edge 231 is 2.5mm, and width 1.8mm, raised height is 0.95mm, institute The material for the high feeding SEF fluted drill stated is hard alloy, and fluted drill contains 2 blades, the high feeding SEF fluted drill There is AP on surface.

And the point of a knife of the high feeding SEF fluted drill contains the angle R or more planes etc. of chamfer angle technique generation make knife Point becomes mellow and full structure.

Case 3 is embodied:

Wherein, the length 1.2mm of the SEF chisel edge 231, width 0.85mm, raised height 0.45mm are described The material of height feeding SEF fluted drill is hard alloy, and fluted drill contains 2 blades, the high feeding SEF fluted drill surface There is AP.And the high feeding SEF fluted drill can be step drill.

The reference product that product in three above case study on implementation is identical with its condition, unique difference is only chisel edge It is compared, results of property is as follows:

By three groups of data comparisons it is recognised that the present invention proposes a kind of high feeding SEF fluted drill, by existing fried dough twist The chisel edge 232 of brill becomes protruding from the SEF shape chisel edge of drill bit part, is conducive to the bit location of fixed fluted drill, to make It obtains drill bit chisel edge in processing and is capable of the participation cutting of active, and processed with cutting state, thus reduce processing load, and It improves and processes the 94%~100% of feeding under the same terms.

The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims

1. a kind of high feeding SEF fluted drill comprising: shank (1) and working portion (2) composition, working portion (2) includes chip removal Slot (21), side edge (22) and apex point (23), wherein chip space (21) and side edge (22) are distributed in the direction of the central axis of drill bit, bore Sharp (23) are connect with chip space (21) and side edge (22), it is characterised in that: the SEF chisel edge (231) on apex point (23) containing protrusion.

2. feeding SEF fluted drill as described in claim 1 high, it is characterised in that: the length of the SEF chisel edge (231) is 0.1mm~15.0mm.

3. feeding SEF fluted drill as described in claim 1 high, it is characterised in that: the width of the SEF chisel edge (231) is 0.1mm~10.0mm.

4. high feeding SEF fluted drill as described in claim 1, it is characterised in that: the height of described SEF chisel edge (231) protrusion Degree is 0.05mm~10.0mm.

5. high feeding SEF fluted drill as described in claim 1, it is characterised in that: the material of the high feeding SEF fluted drill For hard alloy or stainless steel.

6. high feeding SEF fluted drill as described in claim 1, it is characterised in that: the high feeding SEF fluted drill contains 2 ~6 blades.

7. high feeding SEF fluted drill as described in claim 1, it is characterised in that: the high feeding SEF fluted drill surface has AP coating and/or TiAlN coating.

8. high feeding SEF fluted drill as described in claim 1, it is characterised in that: the point of a knife of the high feeding SEF fluted drill Contain protection structure.

9. high feeding SEF fluted drill as described in claim 1, it is characterised in that: the height, which feeds SEF fluted drill, to be Step drill.