CN212704581U - Composite cutter for drilling, tapping and chamfering - Google Patents
Composite cutter for drilling, tapping and chamfering Download PDFInfo
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- CN212704581U CN212704581U CN202020596946.XU CN202020596946U CN212704581U CN 212704581 U CN212704581 U CN 212704581U CN 202020596946 U CN202020596946 U CN 202020596946U CN 212704581 U CN212704581 U CN 212704581U
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Abstract
The utility model discloses a compound cutter for drilling, tapping and chamfering, which comprises a cutter handle; the tool bit is integrally fixed with one side shaft end of the tool handle, a plurality of spiral blades which are spirally arranged are arranged on the tool bit, a chamfer blade section, a tapping section and a drill bit section are sequentially and integrally arranged on the tool bit along the direction far away from the tool handle, and a concave chip groove is arranged between every two adjacent spiral blades and is sequentially contacted with the drill bit section, the tapping section, the chamfer blade section and the tool handle; the chamfering edge section is positioned at the junction of the tool bit and the tool handle, and the diameter of the chamfering edge section is gradually larger along the direction close to the tool handle; the drill bit section is positioned at the shaft end of one side of the cutter head, which is far away from the cutter handle, and the drill bit section is provided with end teeth; axial gaps are formed among the tapping section, the drill bit section and the chamfering edge section; the outer diameter of the tapping section is larger than the drill bit outer diameter of the drill bit section. Adopt this utility model drilling, tapping, the function integration of chamfer on a cutter, simplified the process, promoted the machining precision.
Description
Technical Field
The utility model relates to a sword field for the lathe, concretely relates to gang tool for drilling, tapping, chamfer.
Background
The prior art can not achieve multiple processes and can finish machining only by clamping a cutter once. The drilling, tapping and chamfering of the workpiece require one drill, one screw tap and one chamfering tool at the same time. The method has the advantages of multiple working procedures, long processing period, higher cost and low finished product qualification rate, and the processed parts are easy to scrap. Therefore, there is a need to develop a tool for improving the drilling, tapping and chamfering processes.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is to provide a gang tool for drilling, tapping, chamfer, the function integration of drilling, tapping, chamfer has simplified the process on a cutter, has promoted the machining precision.
In order to solve the above problem, the utility model provides a gang tool for drilling, tapping, chamfer, for reaching the above-mentioned purpose, the utility model provides a technical scheme that its technical problem adopted is:
a compound tool for drilling, tapping, chamfering, comprising: a knife handle; the tool bit is integrally fixed with one side shaft end of the tool handle, a plurality of spiral blades which are spirally arranged are arranged on the tool bit, a chamfer blade section, a tapping section and a drill bit section are sequentially and integrally arranged on the tool bit along the direction far away from the tool handle, and a concave chip groove is arranged between every two adjacent spiral blades and is sequentially contacted with the drill bit section, the tapping section, the chamfer blade section and the tool handle; the chamfering edge section is positioned at the junction of the tool bit and the tool handle, and the diameter of the chamfering edge section is gradually larger along the direction close to the tool handle; the drill bit section is positioned at the shaft end of one side of the cutter head, which is far away from the cutter handle, and the drill bit section is provided with end teeth; axial gaps are formed among the tapping section, the drill bit section and the chamfering edge section; the outer diameter of the tapping section is larger than the drill bit outer diameter of the drill bit section.
The beneficial effect of adopting above-mentioned technical scheme is: the functions of drilling, tapping and chamfering are integrated on one cutter, the effect can be achieved only by once processing, and the requirements can be met without any other auxiliary procedures. Solves the problem of multi-procedure operation in the prior art. Greatly improving the production efficiency and saving a large amount of cost. The accuracy error caused by tool changing is avoided. Integrative tool bit has possessed multiple functions through the dissimilarity, and the corresponding cutter cost that must reduce, the tightness of chamfer sword section, screw tap section, drill bit section also is guaranteed to integrative structure on the one hand. The chamfer edge section, the tapping section and the drill bit section have enough axial distance, so that one functional area of the tool bit can be selectively used. The radial size of the chamfering edge section, the tapping section and the drill bit section is convenient for drilling a hole by using the drill bit section, the tapping section taps the inner wall of the hole immediately, and finally the chamfering edge section chamfers the opening of the hole, so that the whole process is compact.
As a further improvement, the diameter of the junction of the chamfer edge section and the spiral edge is smaller than the outer diameter of the drill bit section.
The beneficial effect of adopting above-mentioned technical scheme is: the chamfering edge section can just chamfer the port of the drilled threaded hole.
As a further improvement, the screw tap section is an extrusion screw tap, and the screw tap section is provided with three annular blades.
The beneficial effect of adopting above-mentioned technical scheme is: the three annular edges are enough to perform the function of extrusion tapping.
As a further improvement, the axial distance between the tap section and the drill bit section is equal to the axial distance between the tap section and the chamfer edge section.
The beneficial effect of adopting above-mentioned technical scheme is: the design enables the feeding stroke of the cutter to be divided into two sections, and the strokes of the two sections are the same, so that the actual operation difficulty is reduced conveniently.
As a further improvement, the juncture of one side shaft end close to the screw tap section and the spiral blade on the drill bit section forms a radial step surface.
The beneficial effect of adopting above-mentioned technical scheme is: the outer diameter of the drill bit is larger than the spiral blade, the spiral blade is convenient to collide with a machined workpiece too conveniently due to the radial step surface, and the chip removal effect is improved.
As a further improvement, the utility model has a concave curved surface which is an inner fillet and is connected with the transition tool bit and the tool shank on the chamfer edge section.
The beneficial effect of adopting above-mentioned technical scheme is: the transition connection of the inner fillet does not have a stress concentration part, so that the structural strength of the connection part of the tool bit and the tool shank is ensured.
As a further improvement of the utility model, the width of the cylindrical edge on the drill bit section is equal to 10% of the outer diameter of the drill bit on the drill bit section, and the width of the back on the drill bit section is equal to 52% of the outer diameter of the drill bit.
The beneficial effect of adopting above-mentioned technical scheme is: the selection of the local size of the drill bit section is convenient for ensuring the punching performance of the drill bit section.
As a further improvement of the utility model, the knife handle and the knife head are made of tungsten-titanium-cobalt hard alloy.
The beneficial effect of adopting above-mentioned technical scheme is: the hard alloy has high hardness, wear resistance and good physical properties, and is suitable for being used as a cutter.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of an embodiment of the present invention.
Fig. 2 is an axial view of a cutter head according to an embodiment of the present invention.
Fig. 3 is a partial view of an embodiment of the present invention.
Fig. 4 is a partial enlarged view of an embodiment of the present invention at F.
Fig. 5 is a perspective view of an embodiment of the present invention.
1-a knife handle; 2-a cutter head; 3-chamfering the edge section; 4-tapping section; 5-end teeth; 6-chip removal groove; 7-a drill bit section; l-total cutter length; l1 — total head length; l2-sipe length; l3-bit edge length; l4-screw pitch; l5-cylinder edge width; l6-width of lateral edge; l7 a back width; l8-flute axial length; l9-drill tip over center distance; d, the diameter of the tool shank; d1-bit outside diameter; d2-outer diameter of the tap; d3-clearance diameter; d4-core diameter; d5-major diameter of drill bit; a-helix angle; a1-chamfering the edge angle; a2-drill point relief angle; a 3-tooth clearance rake angle; a 4-backlash angle; a5-drill point angle; a6-the tool angle of the drill point; a7-drill point cutting feed angle; r1-arc of bottom of tooth gap groove.
Detailed Description
The following detailed description is made in conjunction with specific embodiments of the present invention:
in order to achieve the purpose of the utility model, a gang tool for drilling, tapping, chamfer, include: a knife handle 1; the tool bit 2 is integrally fixed with one side shaft end of the tool shank 1, the tool bit 2 is provided with a plurality of spiral blades which are spirally arranged, the tool bit 2 is sequentially and integrally provided with a chamfer blade section 3, a tapping section 4 and a drill bit section 7 along the direction far away from the tool shank 1, a concave chip removal groove 6 is arranged between the adjacent spiral blades, and the chip removal groove 6 is sequentially contacted with the drill bit section 7, the tapping section 4, the chamfer blade section 3 and the tool shank 1; the chamfering edge section 3 is positioned at the junction of the tool bit 2 and the tool handle 1, and the diameter of the chamfering edge section 3 is gradually larger along the direction close to the tool handle 1; the drill bit section 7 is positioned at the shaft end of one side of the tool bit 2, which is far away from the tool shank 1, and the drill bit section 7 is provided with end teeth 5; axial gaps exist among the tapping section 4, the drill bit section 7 and the chamfering edge section 3; the outer diameter of the tap section 4 is greater than the bit outer diameter D1 of the bit section 7.
The beneficial effect of adopting above-mentioned technical scheme is: the functions of drilling, tapping and chamfering are integrated on one cutter, the effect can be achieved only by once processing, and the requirements can be met without any other auxiliary procedures. Solves the problem of multi-procedure operation in the prior art. Greatly improving the production efficiency and saving a large amount of cost. The accuracy error caused by tool changing is avoided. Integrative tool bit has possessed multiple functions through the dissimilarity, and the corresponding cutter cost that must reduce, the tightness of chamfer sword section, screw tap section, drill bit section also is guaranteed to integrative structure on the one hand. The chamfer edge section, the tapping section and the drill bit section have enough axial distance, so that one functional area of the tool bit can be selectively used. The radial size of the chamfering edge section, the tapping section and the drill bit section is convenient for drilling a hole by using the drill bit section, the tapping section taps the inner wall of the hole immediately, and finally the chamfering edge section chamfers the opening of the hole, so that the whole process is compact.
In other embodiments of the present invention, the diameter of the intersection of the chamfer edge section 3 and the helical edge is smaller than the drill bit outer diameter D1 of the drill bit section 7.
The beneficial effect of adopting above-mentioned technical scheme is: the chamfering edge section can just chamfer the port of the drilled threaded hole.
In other embodiments of the present invention, the tap section 4 is an extrusion tap, and the tap section 4 has three annular blades.
The beneficial effect of adopting above-mentioned technical scheme is: the three annular edges are enough to perform the function of extrusion tapping.
In other embodiments of the present invention, the axial distance between the tap section 4 and the drill bit section 7 is equal to the axial distance between the tap section 4 and the chamfer edge section 3.
The beneficial effect of adopting above-mentioned technical scheme is: the design enables the feeding stroke of the cutter to be divided into two sections, and the strokes of the two sections are the same, so that the actual operation difficulty is reduced conveniently.
In other embodiments of the present invention, the junction between the one side shaft end of the drill bit section 7 close to the screw tap section 4 and the spiral blade forms a radial step surface.
The beneficial effect of adopting above-mentioned technical scheme is: the outer diameter of the drill bit is larger than the spiral blade, the spiral blade is convenient to collide with a machined workpiece too conveniently due to the radial step surface, and the chip removal effect is improved.
In other embodiments of the present invention, the chamfer edge section 3 has a concave curved surface that is an inner chamfer and connects the transition tool bit 2 and the tool shank 1.
The beneficial effect of adopting above-mentioned technical scheme is: the transition connection of the inner fillet does not have a stress concentration part, so that the structural strength of the connection part of the tool bit and the tool shank is ensured.
In other embodiments of the present invention, the cylindrical edge width L5 on bit section 7 is equal to 10% of the bit outer diameter D1 on bit section 7, and the back width L7 on bit section 7 is equal to 52% of the bit outer diameter D1.
The beneficial effect of adopting above-mentioned technical scheme is: the selection of the local size of the drill bit section is convenient for ensuring the punching performance of the drill bit section.
In other embodiments of the present invention, the handle 1 and the tool bit 2 are made of tungsten-titanium-cobalt hard alloy.
As shown in fig. 1, the total length L of the insert body, the total length L1 of the insert tip, the length L2 of the pocket, the length L3 of the bit edge, and the pitch L4 of the tap are determined according to actual requirements. As shown in fig. 2, the chisel edge width L6, axial flute length L8 and drill tip center distance L9 are determined according to actual requirements. As shown in fig. 2 and 4, the shank diameter D, the drill outer diameter D1, the tap outer diameter D2, and the clearance diameter D3 are determined according to actual requirements. The core diameter D4 and the bit major diameter D5 were 27% of the bit outer diameter D1 and 90% of the bit outer diameter D1, respectively. As shown in fig. 1, 3 and 4, the sizes of the helix angle a, the chamfer edge angle a1, the drill tip relief angle a2, the tooth clearance front angle A3, the tooth clearance angle a4, the drill tip angle a5, the drill tip exit angle a6, the drill tip entry angle a7 and the circular arc R at the bottom of the tooth clearance groove are determined according to actual needs.
The beneficial effect of adopting above-mentioned technical scheme is: the hard alloy has high hardness, wear resistance and good physical properties, and is suitable for being used as a cutter.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (8)
1. A compound tool for drilling, tapping, chamfering, comprising:
a knife handle;
the tool bit is integrally fixed with one side shaft end of the tool handle, the tool bit is provided with a plurality of spiral blades which are spirally arranged, the tool bit is sequentially and integrally provided with a chamfer blade section, a tapping section and a drill bit section along the direction away from the tool handle, a concave chip groove is arranged between every two adjacent spiral blades, and the chip groove is sequentially contacted with the drill bit section, the tapping section, the chamfer blade section and the tool handle;
the chamfering edge section is positioned at the junction of the tool bit and the tool handle, and the diameter of the chamfering edge section is gradually larger along the direction close to the tool handle; the drill bit section is positioned at the shaft end of one side of the cutter head, which is far away from the cutter handle, and the drill bit section is provided with end teeth; axial gaps are formed among the tapping section, the drill bit section and the chamfering edge section; the outer diameter of the tapping section is larger than the drill bit outer diameter of the drill bit section.
2. The composite tool for drilling, tapping, chamfering according to claim 1, wherein: the diameter of the junction of the chamfer edge section and the spiral edge is smaller than the drill bit outer diameter of the drill bit section.
3. The composite tool for drilling, tapping, chamfering according to claim 1, wherein: the tap section is an extrusion tap and is provided with three annular edges.
4. The composite tool for drilling, tapping, chamfering according to claim 1, wherein: the axial distance between the tapping section and the drill bit section is equal to the axial distance between the tapping section and the chamfer edge section.
5. The composite tool for drilling, tapping, chamfering according to claim 1, wherein: and a radial step surface is formed at the junction of the shaft end of one side of the drill bit section, which is close to the screw tap section, and the spiral blade.
6. The composite tool for drilling, tapping, chamfering according to claim 1, wherein: the chamfer edge section is provided with a concave curved surface which is an inner fillet and is connected with the transition tool bit and the tool shank.
7. The composite tool for drilling, tapping, chamfering according to claim 1, wherein: the width of the cylindrical edge on the drill bit section is equal to 10% of the outer diameter of the drill bit on the drill bit section, and the width of the back on the drill bit section is equal to 52% of the outer diameter of the drill bit.
8. The composite tool for drilling, tapping, chamfering according to claim 1, wherein: the tool holder and the tool bit are made of tungsten-titanium-cobalt hard alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020596946.XU CN212704581U (en) | 2020-04-20 | 2020-04-20 | Composite cutter for drilling, tapping and chamfering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020596946.XU CN212704581U (en) | 2020-04-20 | 2020-04-20 | Composite cutter for drilling, tapping and chamfering |
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| Publication Number | Publication Date |
|---|---|
| CN212704581U true CN212704581U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020596946.XU Active CN212704581U (en) | 2020-04-20 | 2020-04-20 | Composite cutter for drilling, tapping and chamfering |
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| CN (1) | CN212704581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226814A (en) * | 2022-01-18 | 2022-03-25 | 深圳市中天超硬工具股份有限公司 | PCD (polycrystalline Diamond) micro drill bit |
-
2020
- 2020-04-20 CN CN202020596946.XU patent/CN212704581U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226814A (en) * | 2022-01-18 | 2022-03-25 | 深圳市中天超硬工具股份有限公司 | PCD (polycrystalline Diamond) micro drill bit |
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