CN103752929A - Rotary cutting tool with double-layered cutting edge - Google Patents
Rotary cutting tool with double-layered cutting edge Download PDFInfo
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- CN103752929A CN103752929A CN201310742860.8A CN201310742860A CN103752929A CN 103752929 A CN103752929 A CN 103752929A CN 201310742860 A CN201310742860 A CN 201310742860A CN 103752929 A CN103752929 A CN 103752929A
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Abstract
The invention discloses a rotary cutting tool with a double-layered cutting edge. The rotary cutting tool comprises a tool body, the tool body is provided with at least one set of tool grooves, a cutting tip set consisting of a first cutting tip and a second cutting tip is fixed on each tool groove by a fastener, the first cutting tip is pressed on the second cutting tip, the second cutting tip is pressed on the tool groove, and in the process of cutting processing, the cutting feed of the second cutting tip is larger than or equal to that of the first cutting tip. The rotary cutting tool with a double-layered cutting edge disclosed by the invention has the advantages of high cutting efficiency, easy manufacturing, cost reduction and smooth chip removal.
Description
Technical field
The present invention relates to metal cutting manufacture field, relate in particular to a kind of rotary cutting tool with double-layer cutting edges.
Background technology
Rotary cutting tool is in order to improve working (machining) efficiency, the cutting tip of most as far as possible amounts is housed conventionally, so that for rotary cutting tool arranges cutting edge as much as possible, the object of doing is like this to be at utmost to reduce under identical feeding the especially tangential force of cutting force on cutting tip.But, rotary cutting tool in use, in order to guarantee smear metal, discharge smoothly and avoid to interfere with cutter hub, week upwards, need in the top surface areas of milling cutting insert, there is chip space to be generally chip pocket, simultaneously in order to guarantee that blade installation slot can provide enough cutting bearing capacity and impact resistances for cutting tip, need to retain quite thick material in the bottom of cutter groove, therefore, during design cutter, need take into account the demand of chip pocket and cutter groove, in the week of rotary cutting tool, upwards should there is enough large chip pocket to carry out chip removal, there is again enough thick entity to carry out proof strength, this must be restricted with regard to the quantity that has caused cutting tip.As can be seen here, rotary cutting tool need to arrange cutting tip as much as possible in order to improve working (machining) efficiency in the prior art, and in order to guarantee that chip removal and cutter intensity need to arrange the least possible cutting tip, this contradiction has become the principal element of restricting rotation cutting tool cutting ability.
In order to reduce the restriction of above-mentioned contradiction to rotary cutting tool, there is at present the cutting tip with double-layer cutting edges structure to pack into the technical scheme of rotary cutting tool, thereby the cutting tip in a cutter groove can successively carry out twice cutting realizes the object that increases cutting edge number, this kind of structure improved largely rotary cutting tool and participated in the effective sword number cutting, but, for the edge strength that guarantees that in the cutting tip of double-layer cutting edges structure, first participation is cut, this cutting edge need have enough full rear knife face, the flute profile space that this cutting edge that rear participation is cut is corresponding is very little, groove design is also limited by very large, corresponding chip breaking is also very poor with appearance bits ability, therefore, when the cutting tip of this double-layer cutting edges structure is designed, need be rear the cutting edge of participation cutting with respect to the radius of clean-up of rotary cutting central shaft, be set to be less than and first participate in the cutting edge of cutting with respect to the radius of clean-up of rotary cutting central shaft, thereby after reducing, participate in the cutting amount of feeding corresponding to cutting edge of cutting, so that its work in-process produces more frangibility, the smear metal of more easily discharging.Change an angle, the cutting amount of feeding corresponding due to the cutting edge of rear participation cutting is very little, its cutting contribution little, add this cutting blade structure complexity, precision control difficulty, the manufacturing cost with double-layer cutting edges very high, and just must change whole blade after having the wearing and tearing of one deck cutting edge in two-layer cutting edge, use cost is very high, and its cost performance is in fact very low as seen.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, and the rotary cutting tool with double-layer cutting edges that stock-removing efficiency is high, easily manufactured, cost-saving and chip removal is smooth is provided.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of rotary cutting tool with double-layer cutting edges, comprise cutter hub, described cutter hub is provided with at least one group of cutter groove, in described cutter groove, by securing member, be fixed with the cutting tip group being formed by the first cutting tip and the second cutting tip, described the first cutting tip is pressed on the second cutting tip, described the second cutting tip is pressed on cutter groove, and during machining, the cutting feeding of described the second cutting tip is more than or equal to the cutting feeding of the first cutting tip.
As the further improvement of technique scheme:
Described the first cutting tip by the first end face, the first bottom surface and be connected in the first end face and the first bottom surface between the first side surround, described the second cutting tip by the second end face, the second bottom surface and be connected in the second end face and the second bottom surface between the second side surround, described the first side and crossing formation the first cutting edge of the first end face, described the second side and the second end face intersect formation the second cutting edge, and the distance of the rotary middle spindle of described the second cutting edge and rotary cutting tool is greater than the distance of the rotary middle spindle of the first cutting edge and rotary cutting tool.
Described cutter groove is surrounded by the first groove side, the second groove side and groove bottom, and described groove bottom is provided with the fixing hole for connecting securing member, and described the first bottom surface compresses and contacts with the second end face, and described the second bottom surface compresses and contacts with groove bottom.
Described groove bottom is provided with the projection of intersection, and described the second bottom surface is provided with the concave station of intersection, described projection and concave station snap-fit.
Between described the second groove side and the second side, be provided with gap, described the first side contacts with the first groove lateral surface compressing.
Described the first side and crossing formation the first cutting edge of the first end face, described the second side and the second end face intersect formation the second cutting edge, and described the first cutting edge and the second cutting edge are continuous cutting sword.
Described the first side and crossing formation the first cutting edge of the first end face, described the second side and the second end face intersect formation the second cutting edge, and described the first cutting edge is continuous cutting sword, and it is recessed that described the second cutting edge is provided with multiple cutting edges.
Described the first side and crossing formation the first cutting edge of the first end face, described the second side and the second end face intersect formation the second cutting edge, and it is recessed that described the first cutting edge is provided with multiple cutting edges, and described the second cutting edge is continuous cutting sword.
Described the first side and crossing formation the first cutting edge of the first end face, described the second side and the second end face intersect formation the second cutting edge, it is recessed that described the first cutting edge and the second cutting edge are equipped with multiple cutting edges, the cutting edge of described the first cutting edge recessed with the recessed complementation of cutting edge the second cutting edge.
Between described the first cutting tip and the second cutting tip, be provided with the cooling bath that leads to the first side, described cutter hub is provided with cooling duct, and described cooling duct is communicated with cooling bath.
On described securing member, be arranged with seal, described securing member is sealed at both ends to the centre bore of the first cutting tip by seal.
Compared with prior art, the invention has the advantages that:
The rotary cutting tool with double-layer cutting edges of the present invention, in single cutter groove, be provided with the first cutting tip and second cutting tip of stack, two blades are separate, during processing and fabricating, can process respectively separately, to rear knife face separately, the design restriction of the key positions such as flute profile greatly reduces, can make the chip breaking of two cutting tips approach with appearance bits ability, therefore during machining, the cutting feeding of the second cutting tip can be more than or equal to the cutting feeding of the first cutting tip, make two cutting tips when rotary cutting, make close cutting contribution, improve the actual cut efficiency of two cutting edges in single cutter groove, and each blade self is simple in structure, than the blade with double-layer cutting edges, its difficulty of processing, manufacturing cost reduce greatly, and the control of making precision is easier, after single cutting edge wearing and tearing, can only change a corresponding blade, use cost reduces, two cutting edges that participate in cutting in single cutter groove are no longer fixed with respect to the circumferential size of the cutting tool centre of gyration, by mating different blades, article two, the radius of clean-up difference of cutting edge becomes adjustable cutting parameter, thereby can meet the demand of more different cutting occasions, improve the applicable ability of rotary cutting tool, utilize this function to adjust the radius of clean-up of two cutting edges, can make it have and approach or the identical cutting amount of feeding, thereby make two cutting tips there is approaching service life, reduce the tool changing frequency in using, use more convenient.
Accompanying drawing explanation
Fig. 1 is the perspective view of rotary cutting tool the first embodiment of the present invention.
Fig. 2 is the structural representation of looking up of rotary cutting tool the first embodiment of the present invention.
Fig. 3 is the structural representation of cutting tip group in rotary cutting tool the first embodiment of the present invention.
Fig. 4 be in rotary cutting tool the first embodiment of the present invention the first cutting tip look up structural representation.
Fig. 5 is the perspective view of the first cutting tip in rotary cutting tool the first embodiment of the present invention.
Fig. 6 be in rotary cutting tool the first embodiment of the present invention the second cutting tip look up structural representation.
Fig. 7 is the perspective view of the second cutting tip in rotary cutting tool the first embodiment of the present invention.
Fig. 8 is the perspective view of rotary cutting tool the second embodiment of the present invention.
Fig. 9 is the structural representation of looking up of rotary cutting tool the second embodiment of the present invention.
Figure 10 is the structural representation of cutting tip group in rotary cutting tool the second embodiment of the present invention.
Figure 11 be in rotary cutting tool the second embodiment of the present invention the first cutting tip look up structural representation.
Figure 12 is the perspective view of the first cutting tip in rotary cutting tool the second embodiment of the present invention.
Figure 13 be in rotary cutting tool the second embodiment of the present invention the second cutting tip look up structural representation.
Figure 14 is the perspective view of the second cutting tip in rotary cutting tool the second embodiment of the present invention.
Figure 15 is the perspective view of rotary cutting tool of the present invention the 3rd embodiment.
In figure, each label represents:
1, cutter hub; 11, cooling duct; 2, cutter groove; 21, the first groove side; 22, the second groove side; 23, groove bottom; 24, fixing hole; 3, the first cutting tip; 31, the first end face; 32, the first bottom surface; 33, the first side; 34, the first cutting edge; 35, centre bore; 4, the second cutting tip; 41, the second end face; 42, the second bottom surface; 43, the second side; 44, the second cutting edge; 5, securing member; 6, cooling bath; 7, projection; 8, concave station; 9, seal.
The specific embodiment
Fig. 1 to Fig. 7 shows the first of the present invention and has the rotary cutting tool embodiment of double-layer cutting edges, this rotary cutting tool comprises cutter hub 1, cutter hub 1 is provided with at least one group of cutter groove 2, in cutter groove 2, by securing member 5, be fixed with the cutting tip group being formed by the first cutting tip 3 and the second cutting tip 4, the first cutting tip 3 is pressed on the second cutting tip 4, the second cutting tip 4 is pressed on cutter groove 2, the second cutting tip 4 has larger rotary cutting radius compared with the first cutting tip 3, during machining, the cutting feeding of the second cutting tip 4 is more than or equal to the cutting feeding of the first cutting tip 3, in single cutter groove, be provided with the first cutting tip 3 and second cutting tip 4 of stack, two blades are separate, during processing and fabricating, can process respectively separately, to rear knife face separately, the design restriction of the key positions such as flute profile greatly reduces, can make the chip breaking of two cutting tips approach with appearance bits ability, therefore the cutting feeding of the second cutting tip 4 is more than or equal to the cutting feeding of the first cutting tip 3, thereby the first cutting tip 3 in single cutter groove 2, the second cutting tip 4 can successively carry out stable circumferential cutting for twice under close cutting depth, make two cutting tips when rotary cutting, make close cutting contribution, improve the actual cut efficiency of interior two cutting edges of single cutter groove 2, and each blade self is simple in structure, than the blade with double-layer cutting edges, its difficulty of processing, manufacturing cost reduce greatly, and the control of making precision is easier, after single cutting edge wearing and tearing, can only change a corresponding blade, use cost reduces, two cutting edges of the interior participation cutting of single cutter groove 2 are no longer fixed with respect to the circumferential size of the cutting tool centre of gyration, by mating different blades, article two, the radius of clean-up difference of cutting edge becomes adjustable cutting parameter, thereby can meet the demand of more different cutting occasions, improve the applicable ability of rotary cutting tool, utilize this function to adjust the radius of clean-up of two cutting edges, can make it have and approach or the identical cutting amount of feeding, thereby make two cutting tips there is approaching service life, reduce the tool changing frequency in using, use more convenient.
In the present embodiment, the first cutting tip 3 is by the first end face 31, the first bottom surface 32 and be connected in the first end face 31 and the first bottom surface 32 between the first side 33 surround, the second cutting tip 4 is by the second end face 41, the second bottom surface 42 and be connected in the second end face 41 and the second bottom surface 42 between the second side 43 surround, the first side 33 and crossing formation the first cutting edge 34 of the first end face 31, the second side 43 and the second end face 41 intersect formation the second cutting edge 44, the distance of the rotary middle spindle of the second cutting edge 44 and rotary cutting tool is greater than the distance of the rotary middle spindle of the first cutting edge 34 and rotary cutting tool.Cutter groove 2 is surrounded by the first groove side 21, the second groove side 22 and groove bottom 23, groove bottom 23 is provided with the fixing hole 24 for connecting securing member 5, the first bottom surface 32 compresses and contacts with the second end face 41, the second bottom surface 42 compresses and contacts with groove bottom 23, between the second groove side 22 and the second side 43, be provided with gap, the first side 33 compresses and contacts with the first groove side 21.
In the present embodiment, projection 7, the second bottom surfaces 42 that groove bottom 23 is provided with intersection are provided with the concave station 8 of intersection, and projection 7 and concave station 8 snap-fit can effectively limit the second cutting tip 4 and when cutting, produce looseningly, improve cutting stability.
In the present embodiment, the first side 33 and crossing formation the first cutting edge 34 of the first end face 31, the second side 43 and second end face 41 crossing formation the second cutting edge 44, the first cutting edges 34 and the second cutting edge 44 are continuous cutting sword, can be widely used in fine finishining, semifinishing occasion.
In the present embodiment, between the first cutting tip 3 and the second cutting tip 4, be provided with the cooling bath 6 that leads to the first side 33, cutter hub 1 is provided with cooling duct 11, and cooling duct 11 is communicated with cooling bath 6.Cooling medium can arrive cutting zone by cooling duct 11, cooling bath 6, can carry out cutting zone fully coolingly, and the smear metal that the second cutting tip 4 is produced forms to impact and discharges fast smear metal; When cooling medium adopts high pressure cooling, can make smear metal fracture fast simultaneously, thereby increase the cutting power of the second cutting tip 4, cutting feeding and cutting load that raising can be born.On securing member 5, be arranged with seal 9, securing member 5 is sealed at both ends to the centre bore 35 of the first cutting tip 3 by seal 9, and securing member 5 is sealed at both ends to the centre bore 35 of the first cutting tip 3 by seal 9, thereby improves high pressure cooling effect.
Fig. 8 to Figure 14 shows the second of the present invention and has the rotary cutting tool embodiment of double-layer cutting edges, the present embodiment and the first embodiment are basic identical, difference is only: it is recessed that the first cutting edge 34 and the second cutting edge 44 are equipped with multiple cutting edges, the cutting edge of the first cutting edge 34 recessed with the recessed complementation of cutting edge the second cutting edge 44, this cutting edge combination can at utmost be strengthened chip removal ability and reduce cutting edge impulsive force, thereby is widely used in semifinishing, roughing occasion.
Figure 15 shows of the present invention the third and has the rotary cutting tool embodiment of double-layer cutting edges, and the present embodiment and the first embodiment are basic identical, and difference is only: the first cutting edge 34 is continuous cutting sword, and it is recessed that the second cutting edge 44 is provided with multiple cutting edges.In addition, in other embodiments, the first cutting edge 34 can also be made as to multiple cutting edges recessed, the second cutting edge 44 is made as continuous cutting sword.These two kinds of cutting edge combinations can be widely used in semifinishing, roughing occasion.
Although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention.Any those of ordinary skill in the art, in the situation that not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solution of the present invention,, all should drop in the scope of technical solution of the present invention protection any simple modification made for any of the above embodiments, equivalent variations and modification according to the technology of the present invention essence.
Claims (11)
1. one kind has the rotary cutting tool of double-layer cutting edges, comprise cutter hub (1), described cutter hub (1) is provided with at least one group of cutter groove (2), it is characterized in that: in described cutter groove (2), by securing member (5), be fixed with the cutting tip group being formed by the first cutting tip (3) and the second cutting tip (4), described the first cutting tip (3) is pressed on the second cutting tip (4), described the second cutting tip (4) is pressed on cutter groove (2), during machining, the cutting feeding of described the second cutting tip (4) is more than or equal to the cutting feeding of the first cutting tip (3).
2. the rotary cutting tool with double-layer cutting edges according to claim 1, it is characterized in that: described the first cutting tip (3) is by the first end face (31), the first bottom surface (32) and be connected in the first end face (31) and the first bottom surface (32) between the first side (33) surround, described the second cutting tip (4) is by the second end face (41), the second bottom surface (42) and be connected in the second end face (41) and the second bottom surface (42) between the second side (43) surround, described the first side (33) formation first cutting edge crossing with the first end face (31) (34), described the second side (43) and the second end face (41) intersect formation the second cutting edge (44), the distance of the rotary middle spindle of described the second cutting edge (44) and rotary cutting tool is greater than the distance of the rotary middle spindle of the first cutting edge (34) and rotary cutting tool.
3. the rotary cutting tool with double-layer cutting edges according to claim 2, it is characterized in that: described cutter groove (2) is surrounded by the first groove side (21), the second groove side (22) and groove bottom (23), described groove bottom (23) is provided with the fixing hole (24) for connecting securing member (5), described the first bottom surface (32) compresses and contacts with the second end face (41), and described the second bottom surface (42) compresses and contacts with groove bottom (23).
4. the rotary cutting tool with double-layer cutting edges according to claim 3, it is characterized in that: described groove bottom (23) is provided with the projection (7) of intersection, described the second bottom surface (42) is provided with the concave station (8) of intersection, described projection (7) and concave station (8) snap-fit.
5. the rotary cutting tool with double-layer cutting edges according to claim 3, is characterized in that: between described the second groove side (22) and the second side (43), be provided with gap, described the first side (33) compresses and contacts with the first groove side (21).
6. according to the rotary cutting tool with double-layer cutting edges described in any one in claim 2 to 5, it is characterized in that: described the first side (33) formation first cutting edge crossing with the first end face (31) (34), described the second side (43) and the second end face (41) intersect formation the second cutting edge (44), and described the first cutting edge (34) and the second cutting edge (44) are continuous cutting sword.
7. according to the rotary cutting tool with double-layer cutting edges described in any one in claim 2 to 5, it is characterized in that: described the first side (33) formation first cutting edge crossing with the first end face (31) (34), described the second side (43) and the second end face (41) intersect formation the second cutting edge (44), described the first cutting edge (34) is continuous cutting sword, and it is recessed that described the second cutting edge (44) is provided with multiple cutting edges.
8. according to the rotary cutting tool with double-layer cutting edges described in any one in claim 2 to 5, it is characterized in that: described the first side (33) formation first cutting edge crossing with the first end face (31) (34), described the second side (43) and the second end face (41) intersect formation the second cutting edge (44), it is recessed that described the first cutting edge (34) is provided with multiple cutting edges, and described the second cutting edge (44) is continuous cutting sword.
9. according to the rotary cutting tool with double-layer cutting edges described in any one in claim 2 to 5, it is characterized in that: described the first side (33) formation first cutting edge crossing with the first end face (31) (34), described the second side (43) and the second end face (41) intersect formation the second cutting edge (44), it is recessed that described the first cutting edge (34) and the second cutting edge (44) are equipped with multiple cutting edges, the recessed recessed complementation of cutting edge with the second cutting edge (44) of the cutting edge of described the first cutting edge (34).
10. according to the rotary cutting tool with double-layer cutting edges described in any one in claim 2 to 5, it is characterized in that: between described the first cutting tip (3) and the second cutting tip (4), be provided with the cooling bath (6) that leads to the first side (33), described cutter hub (1) is provided with cooling duct (11), and described cooling duct (11) are communicated with cooling bath (6).
11. rotary cutting tools with double-layer cutting edges according to claim 10, it is characterized in that: on described securing member (5), be arranged with seal (9), described securing member (5) is sealed at both ends by the centre bore (35) of seal (9) to the first cutting tip (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310742860.8A CN103752929B (en) | 2013-12-30 | 2013-12-30 | Rotary cutting tool with double-layered cutting edge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310742860.8A CN103752929B (en) | 2013-12-30 | 2013-12-30 | Rotary cutting tool with double-layered cutting edge |
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| CN103752929B CN103752929B (en) | 2017-01-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107803541A (en) * | 2017-12-06 | 2018-03-16 | 成都工具研究所有限公司 | Multilayer milling cutter blade capable of rotating positions and its manufacture method |
| CN114012153A (en) * | 2021-11-03 | 2022-02-08 | 株洲华锐精密工具股份有限公司 | Cutting tool |
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| CN114012153B (en) * | 2021-11-03 | 2022-08-30 | 株洲华锐精密工具股份有限公司 | Cutting tool |
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|---|---|
| CN103752929B (en) | 2017-01-25 |
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