CN202357001U - Drilling device - Google Patents
Drilling device Download PDFInfo
- Publication number
- CN202357001U CN202357001U CN2011204604360U CN201120460436U CN202357001U CN 202357001 U CN202357001 U CN 202357001U CN 2011204604360 U CN2011204604360 U CN 2011204604360U CN 201120460436 U CN201120460436 U CN 201120460436U CN 202357001 U CN202357001 U CN 202357001U
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- CN
- China
- Prior art keywords
- bearing
- cavity sleeve
- hollow cavity
- spring
- centering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005553 drilling Methods 0.000 title abstract description 40
- 238000005520 cutting process Methods 0.000 claims abstract description 33
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 8
- 239000010432 diamond Substances 0.000 claims abstract description 8
- 229910052582 BN Inorganic materials 0.000 claims description 6
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 6
- 239000002131 composite material Substances 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 12
- 238000005219 brazing Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 8
- 238000003754 machining Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 1
- 229910001573 adamantine Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model discloses a drilling device, which relates to the field of techniques for realizing the automatic centering and automatic chip removal of a trepanning hole-making tool in the process of carrying out drilling processing on composite materials. According to the utility model, the two ends of a hollow internal-cavity sleeve are respectively in threaded connection with a cutting part and a drill shank, the cutting part is connected to the periphery of one end of the hollow internal-cavity sleeve by a first thread, and the drill shank is connected to the periphery of the other end of the hollow internal-cavity sleeve by a second thread; one end (far away from the hollow internal-cavity sleeve) of the drill shank is connected with a tool shank by a top cover; and a centering centre is arranged in an interval cavity of the cutting part, one end of the centering centre is in interference fit with the inner wall of the hollow internal-cavity sleeve by a bearing, and one side (far away from the centering centre) of the bearing is provided with a limit part. The utility model provides a drilling tool for realizing the automatic centering and chip removal of a trepanning hole-making tool, so that the trepanning hole-making tool gets a centering capacity and an automatic chip removal capacity. Artificial diamond grits are welded on the surface of the cutting part through a diamond brazing process, thereby replacing a drilling processing mode with a grinding processing mode.
Description
Technical field
The utility model relates to a kind of be used for realizing jacking drilling the instrument self-centering and the technical field of chip removal automatically when carrying out the composite Drilling Operations.
Background technology
Composite is meant the material that is combined by different way by two or more different material, and it can bring into play the advantage of various materials, overcomes the defective of homogenous material, enlarges the range of application of material.Because characteristics such as that composite has is in light weight, intensity is high, machine-shaping is convenient, excellent spring, resistance to chemical attack and good weatherability; Progressively replace timber and metal alloy; Be widely used in fields such as Aero-Space, automobile, electric, building, body-building apparatus, obtained develop rapidly in recent years especially.
Along with developing rapidly and increasingly extensive application of composite, machining becomes requisite important step of composite element manufacture process.Meanwhile, the secondary mechanical processing problems of composite also emerges thereupon.The processing capacity of composite material work piece is in fact considerably less, and itself is shaped basically.But the assembling of composite material structural member be unable to do without the connection of structure, and mechanical connection is still main method of attachment.Therefore, must experience accurate drilling manufacturing procedure in the composite application process satisfying connection request, and the secondary mechanical processing capacity is very big, for example, U.S. F-22 opportunity of combat only wing composite just needs 14000 PRECISION HOLE.Characteristics such as hardness height, intensity are big because composite has, poor thermal conductivity, anisotropy, interlaminar strength are low; In drilling processing; Layering, sur-face peeling, burr, resin are melted, fiber collapses problem such as scarce and perplexing all the time and make on-the-spotly, are a kind of very difficult high-quality material processed.And the high rigidity of carbon fiber makes that tool wear is fast, cutter life short; Carbon fibre reinforced composite plate like common high speed steel twist drill drilling 3 millimeters thick; Every sharpening once can only be processed about 5 holes, once can process about 50 holes with the whole spiral bit sharpening of carbide alloy.
For solving crudy and the cutter life problem in the composite, experts and scholars have carried out a large amount of theoretical and experimental studies both at home and abroad, generally believe to adopt diamond jacking drilling instrument can obtain good crudy and long life tools.But when using jacking drilling instrument to carry out Drilling Operations, there is so long-term insurmountable problem; Promptly because jacking drilling instrument does not have the apex point part of drilling tools such as picture fluted drill, straight-flute drill; Thereby, Drilling Operations can't accomplish as drilling tools such as fluted drill, straight-flute drill, to feel relieved when beginning with apex point; Have a strong impact on the positional precision in hole, finally cause the decline of part assembly quality.Another problem that is present in the practical application of jacking drilling instrument is; Jacking drilling instrument is processed cylindric smear metal that the processing of composite through hole particularly back forms and is separated the back with workpiece elastic recovery takes place carrying out through hole; It is blocked in is difficult in the jacking drilling instrument inner chamber take out; Must adopt manual mode to force to take out smear metal, cause working (machining) efficiency low, can't be used for field machining.
Summary of the invention
The purpose of the utility model is a kind of drilling tool of a kind of method of jacking drilling instrument self-centering and chip removal being provided and realizing this method; Use the drilling tool of this method can solve above-mentioned two problems, make jacking drilling instrument obtain the ability of centering and the ability of automatic chip removal.Simultaneously; In order to obtain the more excellent hole crudy of composite; The cutter manufacture craft of a kind of " generation cutting with mill " is cited, and promptly through diamond brazing technology the diamond abrasive particle is welded on the surface of cutting tip, substitutes the Drilling Operations mode with the grinding mode.
The two ends of the utility model hollow cavity sleeve be threaded respectively cutting tip, drillstock, cutting tip through first be threaded in hollow cavity sleeve one end periphery, drillstock through second be threaded in the hollow cavity sleeve other end periphery; Drillstock connects handle of a knife away from an end of hollow cavity sleeve through top cover; The cavity arrangements centering of cutting tip is top, and the top end of feeling relieved is provided with locating part away from the top side of centering through the inwall interference fit of bearing and hollow cavity sleeve on the bearing.
The bearing of the utility model comprises clutch shaft bearing, second bearing, and second bearing is arranged in the side near locating part.
The cutting part of the utility model comprises tip, top bottom, top middle part, top top; The two ends of top bottom connect tip, top middle part respectively; The other end at top middle part connects top top; Top upper bearing is connected the inwall of hollow cavity sleeve, and cutting tip is stretched out in the tip.
The locating part of the utility model comprises first spring shim, spring, second spring shim, and first spring shim contacts with bearing, and spring is between first spring shim, second spring shim, and second spring shim contacts with top cover.
Second spring shim of the utility model is a staged, comprises path part, large-diameter portion branch, and path partly stretches in the spring, and large-diameter portion divides and hollow cavity sleeve matched in clearance.
The inwall matched in clearance of spring of the utility model and hollow cavity sleeve.
Evenly arrange super-hard abrasive near the top end of centering on the utility model cutting tip body.
The utility model super-hard abrasive is a kind of in diamond, cubic boron nitride, the polycrystalline cubic boron nitride.
At least one through hole is set on the top cover of the utility model.
The utility model is used for feeling relieved and the drilling tool of chip removal is automatically accomplished the centering action through the top locating hole by material surface of centering that end face stretches out.Simultaneously, the top certain flexible stroke that has of feeling relieved makes jacking drilling instrument obtain the function of automatic chip removal whereby.
The jacking drilling instrument of the utility model can separate with centring means as the working portion of actual participation cutting, i.e. jacking drilling instrument is connected with centring means through threaded engagement.Jacking drilling instrument is when accomplishing cutter life or jacking drilling instrument and must scrap, and jacking drilling instrument can be disassembled and install easily, can not influence the use of whole drilling tool.
Leave the through hole of two manual chip removals on the top cover of the utility model connection shank portion, promptly when instrument can't be accomplished automatic chip removal owing to some emergency case, can reach the effect that the cylinder smear metal is discharged through manual chip-removal hole extruding entire tool inner chamber.
Description of drawings
Fig. 1 is inner chamber partial sectional view of this drilling tool;
Fig. 2 provides a kind of structure of centering top 8 to describe;
The specific embodiment
Be elaborated below in conjunction with the technical scheme of accompanying drawing to the utility model:
As shown in Figure 1; The two ends of the utility model hollow cavity sleeve 2 be threaded respectively cutting tip 1, drillstock 3; Cutting tip 1 is connected the periphery of hollow cavity sleeve 2 one ends through first screw thread 4, and drillstock 3 is connected the periphery of hollow cavity sleeve 2 other ends through second screw thread 5; Drillstock 3 connects handle of a knife 6 away from an end of hollow cavity sleeve 2 through top cover 7; It is top 8 that the cavity arrangements of cutting tip 1 is felt relieved, and top 8 the end of feeling relieved is through the inwall interference fit of bearing with hollow cavity sleeve 2, away from top 8 the side of feeling relieved locating part is set on the bearing.
As shown in Figure 1, the bearing of the utility model comprises that clutch shaft bearing 13, second bearing, 14, the second bearings 14 are arranged in the side near locating part.
Like Fig. 1, shown in Figure 2; The cutting part 1 of the utility model comprises tip 9, top bottom 10, top middle part 11, top top 12; The two ends of top bottom 10 connect tip 9, top middle part 11 respectively; The other end at top middle part 11 connects top top 12, and top top 12 bearings are connected the inwall of hollow cavity sleeve 2, and cutting tip 1 is stretched out in tip 9.
As shown in Figure 1; The locating part of the utility model comprises first spring shim 15, spring 16, second spring shim 17; First spring shim 15 contacts with bearing, and spring 16 is between first spring shim 15, second spring shim 17, and second spring shim 17 contacts with top cover 7.
As shown in Figure 1, second spring shim 17 of the utility model is a staged, comprises that path part 18, large-diameter portion divide 19, and path part 18 stretches in the spring 16, large-diameter portion divide 19 with hollow cavity sleeve 2 matched in clearance.
As shown in Figure 1, the spring 16 of the utility model and the inwall matched in clearance of hollow cavity sleeve 2.
Evenly arrange super-hard abrasive near the end of centering top 8 on the utility model cutting tip 1 body.
The super-hard abrasive of the utility model is a kind of in diamond, cubic boron nitride, the polycrystalline cubic boron nitride.
The drilling tool cutting tip 1 of the utility model adopts the version of jacking drilling instrument.Hollow cavity sleeve 2 provides the installing space of tool interior, retrains the radially free degree of inner bodies such as second bearing 14, spring 16 simultaneously.Drillstock 3 provides a handle of a knife 6 of instrument to be used for the instrument clamping, provides the restricted internal part vertically to the top cover 7 of the thrust effect of having moved.Cutting tip 1, hollow cavity sleeve 2 connect through first screw thread 4, and hollow cavity sleeve 2, drillstock 3 connect through second screw thread 5, cutting tip 1, hollow cavity sleeve 2, the drillstock 3 common outer shape that constitute this drilling tool.Feel relieved top 8 be installed in drilling tool inner chamber, guarantee coaxial relation with cutting tip 1.The utility model is felt relieved and is guaranteed certain clearance between the inwall of top 8 top bottom 10 and cutting tip 1.Cutting tip 1 is stretched out in feel relieved top 8 tip 9.Top top 12 and clutch shaft bearing 13, second bearing, 14 interference fit, the diameter at top middle part 11 is bigger slightly than top top 12, and bearing is carried out axial location.Clutch shaft bearing 13, second bearing 14 and sleeve 2 inwall matched in clearance, the end of hollow cavity sleeve 2 is arranged locating part.First spring shim 15 is installed in second bearing, 14 upper surfaces, and internal diameter is greater than the bearing inner race external diameter, with hollow cavity sleeve 2 inwall matched in clearance.Spring 16 is installed between first spring shim 15 and second spring shim 17.Second spring shim 17 is designed to staged, and path part 18 stretches into spring 16 inner chambers and limits its radial-play, large-diameter portion divide 19 with hollow cavity sleeve 2 matched in clearance.The upper surface 20 of second spring shim 15 contacts with top cover 7 bottom surfaces.Leave certain clearance between spring 16 and hollow cavity sleeve 2 inwalls, prevent that the axial compression of spring is unrestricted.
The drilling tool of the utility model adopts the tubular structure form, has certain wall thickness.Super-hard abrasive is arranged on cutting tip 1 body end near centering top 8 in an orderly manner, and the utilization soldering processes are welded on the surface with abrasive particle.Wherein, super-hard abrasive plays a part to remove material in the Drilling Operations process, and side abrasive particle reconditioning is the machining hole inwall.Adopt the device of this structure can improve the cutter life of composite hole machining tool by adamantine wearability; Utilize the hole crudy of the processing mode raising composite of " cutting " to grind generation.
Claims (9)
1. drill unit; The two ends that it is characterized in that hollow cavity sleeve (2) be threaded respectively cutting tip (1), drillstock (3); Cutting tip (1) is connected the periphery of hollow cavity sleeve (2) one ends through first screw thread (4), and drillstock (3) is connected the periphery of hollow cavity sleeve (2) other end through second screw thread (5); Drillstock (3) connects handle of a knife (6) away from an end of hollow cavity sleeve (2) through top cover (7); The cavity arrangements centering top (8) of cutting tip (1), an end of feel relieved top (8) are through the inwall interference fit of bearing and hollow cavity sleeve (2), and the side away from centering top (8) on the bearing is provided with locating part.
2. drill unit according to claim 1 is characterized in that above-mentioned bearing comprises clutch shaft bearing (13), second bearing (14), and second bearing (14) is arranged in the side near locating part.
3. drill unit according to claim 1 and 2; It is characterized in that above-mentioned cutting part (1) comprises tip (9), top bottom (10), top middle part (11), top top (12); The two ends of top bottom (10) connect tip (9), top middle part (11) respectively; The other end at top middle part (11) connects top top (12), and top top (12) bearing is connected the inwall of hollow cavity sleeve (2), and cutting tip (1) is stretched out in tip (9).
4. drill unit according to claim 1 and 2; It is characterized in that above-mentioned locating part comprises first spring shim (15), spring (16), second spring shim (17); First spring shim (15) contacts with bearing; Spring (16) is positioned between first spring shim (15), second spring shim (17), and second spring shim (17) contacts with top cover (7).
5. drill unit according to claim 4; It is characterized in that above-mentioned second spring shim (17) is staged; Comprise path part (18), large-diameter portion branch (19); Path part (18) stretches in the spring (16), large-diameter portion branch (19) and hollow cavity sleeve (2) matched in clearance.
6. drill unit according to claim 5 is characterized in that the inwall matched in clearance of above-mentioned spring (16) and hollow cavity sleeve (2).
7. drill unit according to claim 1 is characterized in that evenly arranging super-hard abrasive near the end of centering top (8) on cutting tip (1) body.
8. drill unit according to claim 7 is characterized in that super-hard abrasive is a kind of in diamond, cubic boron nitride, the polycrystalline cubic boron nitride.
9. drill unit according to claim 1 is characterized in that on the top cover (7) at least one through hole being set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204604360U CN202357001U (en) | 2011-11-18 | 2011-11-18 | Drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204604360U CN202357001U (en) | 2011-11-18 | 2011-11-18 | Drilling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202357001U true CN202357001U (en) | 2012-08-01 |
Family
ID=46568216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204604360U Expired - Fee Related CN202357001U (en) | 2011-11-18 | 2011-11-18 | Drilling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202357001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380810A (en) * | 2011-11-18 | 2012-03-21 | 南京航空航天大学 | Drilling device |
-
2011
- 2011-11-18 CN CN2011204604360U patent/CN202357001U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380810A (en) * | 2011-11-18 | 2012-03-21 | 南京航空航天大学 | Drilling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20141118 |
|
| EXPY | Termination of patent right or utility model |