CN210937307U - Composite drill bit convenient for chip breaking - Google Patents
Composite drill bit convenient for chip breaking Download PDFInfo
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- CN210937307U CN210937307U CN201921805039.5U CN201921805039U CN210937307U CN 210937307 U CN210937307 U CN 210937307U CN 201921805039 U CN201921805039 U CN 201921805039U CN 210937307 U CN210937307 U CN 210937307U
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Abstract
The utility model discloses a compound drill bit convenient to chip breaking relates to the cutting tool field, and this compound drill bit includes the drill bit main part, be provided with end chip pocket, main cutting edge and vice cutting edge in the drill bit main part, the anterior angle of end chip pocket is 0, main cutting edge and vice cutting edge all include first cutting edge and second cutting edge, have certain distance between the tip of first cutting edge, second cutting edge. The utility model discloses a rake angle of end chip pocket is 0 for the space of cutting in the cutting process diminishes, the chip breaking of being convenient for, first cutting edge, there is certain distance between the tip of second cutting edge, form the staggered structure of two edges, when using, the aluminium bits that first cutting edge cutting formed can contact and take place the rupture with the second cutting edge, effectively improve the chip breaking ability, shorten the length of aluminium bits, not only be convenient for discharge, and can avoid the aluminium bits winding of overlength on the drill bit, can prolong the life of cutter, improve cutting quality and efficiency.
Description
Technical Field
The utility model relates to a cutting tool field, concretely relates to compound drill bit convenient to chip breaking.
Background
Present cutting tool is when cutting the aluminum product, the aluminum product is softer, be difficult to the chip breaking, produce longer banded aluminium bits easily, be difficult to by chip removal machine discharge and pile up in the cutting area, longer aluminium bits can twine on the drill bit, if not in time clearance, not only can damage the cutter, still can fish tail processing product's surface, it is relatively poor to lead to the smooth finish on product surface, the size changes, produce the deviation with the design size, the life of cutter has not only been shortened, cutting quality and efficiency have still been reduced.
Simultaneously, the aluminium bits still can block up the coolant liquid entry in cutting area, leads to the coolant liquid to get into the cutting area, and the cutting area heat is difficult to discharge, and the temperature risees, can lead to the cutter passivation, and the cutting torque increases, need withdraw from the drill bit, clears up the aluminium bits, has reduced production efficiency.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a composite drill bit convenient to chip breaking can prolong the life of cutter, improves cutting quality and efficiency.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
the utility model provides a compound drill bit convenient to chip-breaking, includes the drill bit main part, be provided with end chip pocket, main cutting edge and vice cutting edge in the drill bit main part, the anterior angle of end chip pocket is 0, main cutting edge and vice cutting edge all include first cutting edge and second cutting edge, have certain distance between the tip of first cutting edge, second cutting edge.
Further, the drill body includes a shank and a cutting portion connected to each other.
Furthermore, one end of the cutting part, which is far away from the tool holder, is symmetrically provided with two end teeth.
Furthermore, each end tooth corresponds to an end chip groove.
Furthermore, the main cutting edge and the auxiliary cutting edge are spirally wound on the drill bit body, and two spiral gaps between the main cutting edge and the auxiliary cutting edge are a cutting chip groove and a cutting chip groove respectively.
Compared with the prior art, the utility model has the advantages of:
(1) the utility model discloses in compound drill bit of chip breaking of being convenient for, when using, because the anterior angle of end chip pocket is 0, make main cutting edge and vice cutting edge in the space of cutting diminish, thereby the aluminium bits takes place to contact the rupture with the wall in cutting space easily in less space, it is further, main cutting edge and vice cutting edge all include first cutting edge and second cutting edge, first cutting edge, there is certain distance between the tip of second cutting edge, form the structure that two edges staggered, when using, the aluminium bits that first cutting edge cut formed can contact and take place the rupture with the second cutting edge, effectively improve the chip breaking ability, shorten the length of aluminium bits, not only be convenient for discharge, and can avoid the aluminium bits winding of overlength on the drill bit, can prolong the life of cutter, improve cutting quality and efficiency.
The utility model discloses aluminium bits length only has the third of former drill bit processing aluminium bits length after the drill bit processing, and the chip removal machine can effectively discharge the aluminium bits, and the phenomenon is piled up to the aluminium bits in cutting area not appearing, and the aluminium bits phenomenon is twined to the appearance on the cutter again, has effectively avoided shutting down the operation of clearance aluminium bits, shortens the processing beat, has effectively improved process velocity.
Drawings
FIG. 1 is a schematic structural view of a composite drill bit for facilitating chip breaking according to an embodiment of the present invention;
fig. 2 is a left side view of the cutting portion in the embodiment of the present invention.
In the figure: 1-a drill body, 2-an end chip groove, 3-a main cutting edge, 4-an auxiliary cutting edge, 5-a first cutting edge, 6-a second cutting edge, 7-a tool shank, 8-a cutting part, 9-an end tooth, 10-a cutting chip groove and 11-a cutting chip groove.
Detailed Description
The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the embodiment of the utility model provides a compound drill bit convenient to chip breaking, including drill bit main part 1, drill bit main part 1 includes interconnect's handle of a knife 7 and cutting part 8, and cutting part 8 keeps away from being provided with two end teeth 9 of the one end symmetry of handle of a knife 7, and every end tooth 9 all corresponds an end chip pocket 2, and the anterior angle of end chip pocket 2 is 0.
Still set up main cutting edge 3 and secondary cutting edge 4 on the drill bit main part 1, main cutting edge 3 and secondary cutting edge 4 spiral winding are on drill bit main part 1, and two helical clearances between main cutting edge 3 and the secondary cutting edge 4 are cutting chip groove 10 and cutting chip groove 11 respectively, and main cutting edge 3 and secondary cutting edge 4 all include first cutting edge 5 and second cutting edge 6, have certain distance between the tip of first cutting edge 5, second cutting edge 6.
In fig. 1 of the present embodiment, the main cutting edge 3 and the minor cutting edge 4 at the left end of the cutting portion 8 are not shown in order to show the clear structure of the first cutting edge 5 and the second cutting edge 6.
The utility model discloses when using, because the anterior angle of end chip pocket 2 is 0, make the main cutting edge 3 and the space of cutting of vice cutting edge 4 in cutting process diminish, thereby the aluminium bits contacts the rupture with the wall in cutting space easily in less space, it is further, main cutting edge 3 and vice cutting edge 4 all include first cutting edge 5 and second cutting edge 6, first cutting edge 5, there is certain distance between the tip of second cutting edge 6, form the staggered structure of two edges, when using, the aluminium bits that the cutting of first cutting edge 5 formed can contact and take place the rupture with second cutting edge 6, effectively improve the chip breaking ability, shorten the length of aluminium bits, not only be convenient for discharge, and can avoid the aluminium bits winding of overlength on the drill bit, can prolong the life of cutter, improve cutting quality and efficiency.
The utility model discloses aluminium bits length only has the third of former drill bit processing aluminium bits length after the drill bit processing, and the chip removal machine can effectively discharge the aluminium bits, and the phenomenon is piled up to the aluminium bits in cutting area not appearing, and the aluminium bits phenomenon is twined to the appearance on the cutter again, has effectively avoided shutting down the operation of clearance aluminium bits, shortens the processing beat, has effectively improved process velocity.
When the drill bit of the embodiment is used, the first cutting edge 5 and the second cutting edge 6 can be milled and drilled through the end teeth 9, and the drill bit has two functions.
The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.
Claims (5)
1. The utility model provides a compound drill bit convenient to chip-breaking, includes drill bit main part (1), be provided with end chip pocket (2), main cutting edge (3) and vice cutting edge (4) on drill bit main part (1), its characterized in that: the anterior angle of end chip flute (2) is 0, main cutting edge (3) and minor cutting edge (4) all include first cutting edge (5) and second cutting edge (6), have certain distance between the tip of first cutting edge (5), second cutting edge (6).
2. A composite drill bit for facilitating chip breaking as defined in claim 1, wherein: the drill bit main body (1) comprises a tool shank (7) and a cutting part (8) which are connected with each other.
3. A composite drill bit for facilitating chip breaking as defined in claim 2, wherein: and two end teeth (9) are symmetrically arranged at one end of the cutting part (8) far away from the cutter handle (7).
4. A composite drill bit for facilitating chip breaking as defined in claim 3, wherein: each end tooth (9) corresponds to one end chip groove (2).
5. A composite drill bit for facilitating chip breaking as defined in claim 1, wherein: the main cutting edge (3) and the auxiliary cutting edge (4) are spirally wound on the drill bit main body (1), and two spiral gaps between the main cutting edge (3) and the auxiliary cutting edge (4) are a cutting chip groove (10) and a cutting chip groove (11) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921805039.5U CN210937307U (en) | 2019-10-24 | 2019-10-24 | Composite drill bit convenient for chip breaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921805039.5U CN210937307U (en) | 2019-10-24 | 2019-10-24 | Composite drill bit convenient for chip breaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210937307U true CN210937307U (en) | 2020-07-07 |
Family
ID=71384933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921805039.5U Active CN210937307U (en) | 2019-10-24 | 2019-10-24 | Composite drill bit convenient for chip breaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210937307U (en) |
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2019
- 2019-10-24 CN CN201921805039.5U patent/CN210937307U/en active Active
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