CN111360301A - Automatic hole-making dimple cutter suitable for weak rigidity equipment - Google Patents
Automatic hole-making dimple cutter suitable for weak rigidity equipment Download PDFInfo
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- CN111360301A CN111360301A CN202010215118.1A CN202010215118A CN111360301A CN 111360301 A CN111360301 A CN 111360301A CN 202010215118 A CN202010215118 A CN 202010215118A CN 111360301 A CN111360301 A CN 111360301A
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- hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/08—Drills combined with tool parts or tools for performing additional working
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Abstract
The invention provides an automatic hole-making and countersinking tool suitable for weak-rigidity equipment, which comprises a tool body and a tool clamping handle part, wherein the tool body is used for processing, the tool body is sequentially provided with a drilling part and a countersinking part from the top to the bottom, the drilling part, the countersinking part and the tool clamping handle part are integrally formed, the drilling part comprises a drilling tip and a cutting edge, the countersinking part is provided with a spiral groove and a countersinking edge, a transition round angle is arranged between the spiral groove and the countersinking edge, the cutting edge comprises an edge, a cross blade and a main cutting edge, the drilling tip is used for making a hole on a product, the countersinking edge is used for countersinking the product with the hole, and the central axes of the drilling tip and the countersinking edge. The cutter design of the invention is oriented to weak-rigidity equipment, the centering capability is improved, the aperture precision is improved, the vibration in the drilling process is reduced, the inverted cone design of the cutter effectively prevents the cutter from contacting with the aperture wall, and the aperture finish is improved.
Description
Technical Field
The invention relates to the technical field of aerospace manufacturing automatic assembly, in particular to an automatic hole-making dimple cutter suitable for weak-rigidity equipment.
Background
At present, the assembly process of the domestic airplane adopts the traditional manual assembly method, namely, primary hole drilling, repeated hole expanding, reaming, socket reaming and the like. The traditional drilling process flow is complicated, the efficiency is low, the precision is poor, the drilling and the dimple are completed step by step, and the coaxiality is poor. The traditional manual assembly cannot meet the assembly requirements of the development of a new generation of airplanes. In order to complete the assembly task of a new generation of airplane and realize the design requirements of high efficiency and long service life, a process method of replacing manual assembly by automatic assembly is adopted at home and abroad, and the assembly quality of the airplane is improved. The aircraft assembly is connected together by a large number of fasteners, most of fatigue faults occur at the connecting holes, and the service life of the aircraft can be prolonged by improving the quality of the connecting holes. The invention relates to a method for manufacturing a hole-making tool, which is characterized in that a new generation of airplane is developed, higher requirements are provided for the assembly quality and the service life of the airplane, the hole-making quality, the precision of the hole-making aperture, the size of outlet burrs and the roughness of the hole wall in the airplane assembly directly influence the assembly quality of the airplane, so that higher requirements are provided for an automatic hole-making tool, and particularly for the common weak-rigidity hole-making equipment represented by a robot, the E-shaped cutting edge design can reduce the outlet burrs, the small edge width and the inverted cone design can improve the precision and the smoothness of the hole, and the problem of poor hole-making quality in the airplane assembly can be effectively solved.
The invention with the publication number of 105642972B relates to a drilling and reaming integrated tool for processing aluminum alloy or titanium alloy laminated structure drilling, and the drilling and reaming integrated tool is characterized in that a drilling part, a reaming part, a countersink part and a handle part are sequentially arranged on a tool body, and the distance between the reaming part and the countersink part is 6-8 mm; the drilling part consists of a chisel edge, two main cutting edges and two auxiliary cutting edges, the main cutting edges are straight cutting edges, the front angles and the rear angles of all points on the cutting edges are the same, and chip breakers are arranged on the front cutter surface; the reaming part consists of two spiral cutting edges; the dimple part consists of two spiral cutting edges. The method is suitable for the traditional hole making machine tool equipment, the cutter centering capacity of weak rigidity hole making equipment is less considered, and the cutter cutting force and cutting vibration adaptability of the weak rigidity equipment are less considered. And the automatic assembly requirements of the new generation of airplane cannot be met on outlet burr control and dimple angle control.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the automatic hole-making dimple-boring cutter suitable for weak-rigidity equipment, which is suitable for the automatic hole-making of the weak-rigidity equipment (such as a robot), can finish hole boring and dimple boring at one time, improves the coaxiality, the bore diameter precision and the bore wall smoothness of a hole and the dimple, reduces the using amount of the cutter, reduces the cost, improves the efficiency, realizes clean and burr-free hole making, and meets the requirements of high efficiency, high quality and long service life of the assembly of a new-generation airplane.
The invention provides a countersinking integrated tool for robot hole making, which comprises a tool body and a tool clamping handle part, wherein the tool body is used for processing, the tool body is sequentially provided with a drilling part and a countersinking part from the top to the bottom, the drilling part, the countersinking part and the tool clamping handle part are integrally formed, the drilling part comprises a drill point and a cutting edge, the countersinking part is provided with a spiral groove and a countersinking edge, a transition fillet is arranged between the spiral groove and the countersinking edge, the cutting edge comprises an edge, a cross blade and a main cutting edge, the drill point is used for making a hole on a product, the countersinking edge is used for countersinking the product, and the central axes of the drill point and the countersinking edge are positioned on the same straight line.
Optionally or preferably, the edge is designed to be small and wide, and the small and wide edges are distributed in the circumferential direction of the cutting edge of the cutter, so that the friction between the radial direction of the cutter and the hole wall is mainly reduced, and the smoothness of the hole wall is improved.
Optionally or preferably, the drill point comprises a plurality of sharp edges, the sharp edges are of a top angle structure, the top angle is 100-120 degrees, the centering effect is good, and the drill point is particularly suitable for automatic hole making and assembling of large-scale curvature aircraft parts.
Optionally or preferably, the cutting edge is linear type and E type, can accurate centering, improves the hole position degree of the automatic system hole of large-scale camber aircraft spare part, produces disk-shaped smear metal when the cutting pierces through, can get rid of the export burr, the relief angle of cutting edge is 20, makes the cutter blade sharp, reduces the cutting force, reduces the deformation of the weak rigidity part of thin wall cutting edge knife face finish polishing makes the improvement system hole quality.
Alternatively or preferably, the length of the chisel edge is 0.2 +/-0.02 mm, so that the cutting force is reduced, and the method is particularly suitable for weak-rigidity thin-wall parts.
Optionally or preferably, the spiral groove is arranged in a variable spiral angle mode, and fine polishing is carried out in the spiral groove.
Alternatively or preferably, the helix angle of the varying helix is from 30 ° to 40 °.
Optionally or preferably, the dimple blade is a linear dimple blade, so that the dimple angle is more accurate, the mating precision with a fastener is higher, and the assembly life of the aircraft parts is prolonged.
Alternatively or preferably, the tool-holding shank is a high-precision shank with a tolerance of h6, which can be fitted with any type of tool shank.
Optionally or preferably, the tool body is designed to be inverted cone, so that the cutting is light and fast, the friction between the tool and the hole wall is reduced, and the hole making quality is improved.
Compared with the prior art, the invention has the following beneficial effects:
1. the design of the tool improves the centering capability, improves the aperture precision, reduces the vibration in the drilling process, avoids the contact of the tool and the hole wall due to the design of the inverted cone, and improves the smoothness of the robot hole making.
2. The drilling tool is simple in structure and novel in design, the drilling section and the countersinking section are integrated on the same tool body, one-time drilling and countersinking composite machining is realized, the hole making procedure is reduced, the hole making technological process is shortened, the tool purchasing cost is reduced, and the hole making efficiency is improved;
3. the structure of the high-efficiency high-quality composite cutter can improve the smoothness of the hole wall, the roughness of the hole wall is less than or equal to Ra1.6, and the composite cutter is far superior to a common hole-making cutter;
4. the cutting edge of the drilling and reaming composite cutter adopts a linear E-shaped plane design, so that the hole position degree of automatic hole making and assembling of large-scale curvature aircraft parts is improved, wafer-shaped cuttings are generated during cutting penetration, outlet burrs can be removed, and burr-free hole making is realized;
5. according to the dimple blade, the helix angle correction is performed on the dimple blade, the dimple blade is linear, the dimple angle is more accurate, the precise control of the dimple angle is realized, the precision of the dimple blade matched with a fastener is higher, and the assembly life of aircraft parts is prolonged; the stepped rake angle is increased, the cutting force is reduced, and the dimple surface quality is improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the structure of an automatic hole-making dimple cutting tool suitable for weak rigidity equipment according to the present invention;
FIG. 2 is a K-view of an automated hole-forming countersink tool of the present invention adapted for use with less rigid equipment;
FIG. 3 is a schematic view of the shape of a workpiece machining hole;
FIG. 4 is a schematic diagram of the machining process of the automatic hole-making countersinking tool suitable for the weak-rigidity equipment, which is arranged on the tool holder.
Shown in the figure: 1 edge, 2 helicla flutes, 3 transition fillets, 4 cutter centre gripping stalk portion, 5 dimple sword, 6 drill points, 7 cutting edges, 8 through-holes, 9 dimple holes, 10 second transition fillets, 11 handle of a knife.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Automatic system hole counter boring cutter suitable for weak rigidity equipment, including cutter body and the cutter centre gripping stalk portion that is used for carrying out processing, cutter body is equipped with drilling portion and counter boring portion from top to bottom in proper order, drilling portion, counter boring portion and cutter centre gripping stalk portion integrated into one piece, drilling portion is including drill point and cutting edge, be equipped with helicla flute and counter boring sword in the counter boring portion, be provided with the transition fillet between helicla flute and the counter boring sword, the cutting edge includes edge, chisel edge and main cutting edge, the drill point carries out the system hole to the product, the counter boring sword carries out counter boring processing to the product in system hole, the drill point with the central axis of counter boring sword is located same straight line.
As a preferred embodiment of the invention, the edge is designed to be small and wide, and the small edge width is distributed in the circumferential direction of the cutting edge of the cutter, so that the friction between the radial direction of the cutter and the hole wall is mainly reduced, the smoothness of the hole wall is improved, and the method is suitable for weak-rigidity hole making equipment.
According to a preferred embodiment of the invention, the drill tip comprises a plurality of sharp edges, the sharp edges are of a top angle structure, the top angle is 100-120 degrees, the centering effect is good, and the drill tip is particularly suitable for automatic hole making and assembling of large curvature aircraft parts and is suitable for weak rigidity hole making equipment.
In a preferred embodiment of the present invention, the cutting edge is a linear type and an E-type, which can accurately center, improve the hole position degree of automatic hole making of large curvature aircraft parts, generate disk-shaped chips during cutting penetration, and remove outlet burrs, and the cutting edge has a back angle of 20 °, so that the cutting edge of the tool is sharp, the cutting force is reduced, the deformation of thin-wall weak rigid parts is reduced, the tool face of the cutting edge is finish-polished, the hole making quality is improved, and the cutting edge is suitable for weak rigid hole making equipment.
In a preferred embodiment of the present invention, the chisel edge has a length of 0.2 ± 0.02mm, which reduces cutting force, and is particularly suitable for thin-walled parts with low rigidity and for drilling equipment with low rigidity.
In a preferred embodiment of the present invention, the spiral groove is arranged at a variable spiral angle, and the inside of the spiral groove is finely polished.
In a preferred embodiment of the present invention, the helix angle of the varying helix is 30 ° to 40 °.
According to a preferred embodiment of the invention, the dimple blade is a linear dimple blade, so that the dimple angle is more accurate, the mating precision with a fastener is higher, and the assembly life of the aircraft parts is prolonged.
In a preferred embodiment of the present invention, the tool-holding shank is a high-precision shank with a tolerance of h6, which can be used with any type of tool shank.
As a preferred embodiment of the invention, the cutter body is designed to be inverted cone, so that the cutting is light and fast, the friction between the cutter and the hole wall is reduced, and the hole making quality is improved.
As shown in fig. 3, in the specific implementation of the present invention, after the automatic hole-making dimple-cutting tool suitable for the weak-rigidity equipment drills the through hole 8 on the workpiece, the feeding is continued, the dimple hole 9 is machined by using the dimple blade 5 of the automatic hole-making dimple-cutting tool suitable for the weak-rigidity equipment, and simultaneously, the second transition fillet 10 between the hole wall 8 and the dimple hole 9 is machined, so that the one-time machining of the drilled dimple is finally realized. The integrated drilling and reaming combined machining tool is novel in structural design and simple in structural design, drilling and reaming integrated combined machining is realized on the body through the integration of the drilling section and the reaming section, drilling procedures are reduced, a hole making process is shortened, and the assembly period of an airplane is obviously shortened.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. Automatic system hole counter boring cutter suitable for weak rigidity equipment, its characterized in that: including cutter body and the cutter centre gripping stalk portion that is used for carrying out processing, cutter body is equipped with drilling portion and dimple portion from top to bottom in proper order, drilling portion, dimple portion and cutter centre gripping stalk portion integrated into one piece, drilling portion includes drill point and cutting edge, be equipped with helicla flute and dimple sword in the dimple portion, the helicla flute with be provided with transition fillet between the dimple sword, the cutting edge includes edge, chisel edge and main cutting edge, the drill point carries out the hole to the product, the dimple sword carries out dimple processing to the product in hole, the drill point with the central axis of dimple sword is located same straight line.
2. The automated hole-making countersink tool for use with less rigid equipment according to claim 1, wherein: the edge is designed to be small and wide, and the small edge width is distributed in the circumferential direction of the cutting edge of the cutter.
3. The automated hole-making countersink tool for use with less rigid equipment according to claim 1, wherein: the drill point comprises a plurality of sharp edges, the sharp edges are of a top angle structure, and the top angle is 100-120 degrees.
4. The automated hole-making countersink tool for use with less rigid equipment according to claim 1, wherein: the cutting edge is the linear type and closes the E type concurrently, the relief angle of cutting edge is 20, cutting edge knife face finish polishing.
5. The automated hole-making countersink tool for use with less rigid equipment according to claim 1, wherein: the length of the chisel edge is 0.2 +/-0.02 mm.
6. The automated hole-making countersink tool for use with less rigid equipment according to claim 1, wherein: the spiral groove is arranged in a variable spiral angle mode, and fine polishing is carried out in the spiral groove.
7. The automated hole-making countersink tool for use with less rigid equipment according to claim 1, wherein: the helix angle of the variable helix is 30-40 degrees.
8. The automated hole-making countersink tool for use with less rigid equipment according to claim 1, wherein: the dimple blade is a linear dimple blade.
9. The automated hole-making countersink tool for use with less rigid equipment according to claim 1, wherein: the cutter clamping handle part is a high-precision clamping handle part, the tolerance of the high-precision clamping handle part is h6, and the cutter clamping handle part can be matched with any type of cutter handles.
10. The automated hole-making countersink tool for use with less rigid equipment according to claim 1, wherein: the cutter body is designed to be an inverted cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010215118.1A CN111360301A (en) | 2020-03-24 | 2020-03-24 | Automatic hole-making dimple cutter suitable for weak rigidity equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010215118.1A CN111360301A (en) | 2020-03-24 | 2020-03-24 | Automatic hole-making dimple cutter suitable for weak rigidity equipment |
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| Publication Number | Publication Date |
|---|---|
| CN111360301A true CN111360301A (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010215118.1A Pending CN111360301A (en) | 2020-03-24 | 2020-03-24 | Automatic hole-making dimple cutter suitable for weak rigidity equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535665A (en) * | 2022-04-25 | 2022-05-27 | 成都飞机工业（集团）有限责任公司 | Hole making cutter and hole making method for weak-rigidity component |
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| JP2005279878A (en) * | 2004-03-30 | 2005-10-13 | Asahi Diamond Industrial Co Ltd | Boring tool |
| CN201455355U (en) * | 2009-08-13 | 2010-05-12 | 沈阳飞机工业（集团）有限公司 | Counterbit integrated cemented carbide drill |
| CN102794486A (en) * | 2012-08-22 | 2012-11-28 | 浙江大学 | Compound tool applicable to high-speed and accurate holing on aircraft panel |
| CN205967542U (en) * | 2016-08-29 | 2017-02-22 | 郑州市钻石精密制造有限公司 | Integrative cutter of rimer |
| CN107008952A (en) * | 2017-05-31 | 2017-08-04 | 山东大学 | A kind of lamination thin plate drilling cutter with bradawl and counter boring chip breaking structure |
| CN107520487A (en) * | 2016-06-20 | 2017-12-29 | 江苏天工工具有限公司 | Ream one dagger is bored to bore |
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2020
- 2020-03-24 CN CN202010215118.1A patent/CN111360301A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005279878A (en) * | 2004-03-30 | 2005-10-13 | Asahi Diamond Industrial Co Ltd | Boring tool |
| CN201455355U (en) * | 2009-08-13 | 2010-05-12 | 沈阳飞机工业（集团）有限公司 | Counterbit integrated cemented carbide drill |
| CN102794486A (en) * | 2012-08-22 | 2012-11-28 | 浙江大学 | Compound tool applicable to high-speed and accurate holing on aircraft panel |
| CN107520487A (en) * | 2016-06-20 | 2017-12-29 | 江苏天工工具有限公司 | Ream one dagger is bored to bore |
| CN205967542U (en) * | 2016-08-29 | 2017-02-22 | 郑州市钻石精密制造有限公司 | Integrative cutter of rimer |
| CN107008952A (en) * | 2017-05-31 | 2017-08-04 | 山东大学 | A kind of lamination thin plate drilling cutter with bradawl and counter boring chip breaking structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535665A (en) * | 2022-04-25 | 2022-05-27 | 成都飞机工业（集团）有限责任公司 | Hole making cutter and hole making method for weak-rigidity component |
| CN114535665B (en) * | 2022-04-25 | 2022-09-16 | 成都飞机工业（集团）有限责任公司 | Hole making method for weak rigid member |
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Application publication date: 20200703 |