CN104070207A - Drill bit and method for processing deep hole of shaft type product - Google Patents
Drill bit and method for processing deep hole of shaft type product Download PDFInfo
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- CN104070207A CN104070207A CN201410277581.3A CN201410277581A CN104070207A CN 104070207 A CN104070207 A CN 104070207A CN 201410277581 A CN201410277581 A CN 201410277581A CN 104070207 A CN104070207 A CN 104070207A
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- deep 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
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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
- B23B51/06—Drills with lubricating or cooling equipment
- B23B51/063—Deep hole drills, e.g. ejector drills
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention provides a drill bit and a method for processing a deep hole of a shaft type product. The drill bit comprises a cutter body and a blade fixedly connected to a tapered working end of the cutter body, wherein a chip removal cavity is arranged in the cutter body; a chip removal hole communicated with the chip removal cavity and a chip division groove communicated with the chip removal hole are arranged on the tapered working end of the cutter body; the blade comprises a primary blade and at least two secondary blades distributed around the primary blade; an axial line passing through the drill tip of the primary blade is parallel with the central axial line of the cutter body without misalignment; the cutting edges of the primary blade and the secondary blades are located at the same tapered cutting working surface of the drill bit; the cutting working surface always keeps full face contact with a deep hole working surface during the drill bit drilling process. The drill bit and the method for processing the deep hole of the shaft type product overcome the disadvantages of long chisel edge of a thin sheet type twist drill and great axial resistance, realize reliable chip division and internal chip removal mode in the drill bit drilling process, extremely improve the drilling efficiency of the deep hole processing, and are good for prolonging the service live of the cutter and improving the safety coefficient during the drilling operation.
Description
Technical field
The present invention relates to deep hole machinery processing technique field, especially relate to a kind of axis products deep hole processing drill bit and method.
Background technology
When axis products is carried out to deep hole machining, due to the function of its deep hole, to be mainly water flowing cooling, therefore requirement on machining accuracy is not high.Existing deep hole machining mode normally adopts thin slice to bore formula deep hole machining, mainly comprises following three class processing modes:
First kind processing mode: workpiece rotation, cutter (drill bit) is done reciprocal rotation and feed motion;
Equations of The Second Kind processing mode: workpiece rotation, cutter (drill bit) is done feed motion;
The 3rd class processing mode: workpiece is fixed, cutter (drill bit) rotation and feed motion.
Because being adopts thin slice to bore deep hole processing, in process, cannot carry out interior chip removal, can only be external chip discharging mode, therefore, the bits grain cutting splashes and is easy to cause contamination, and may cause personal injury; In addition, because the processing length of deep hole is longer, the drilling operation time is corresponding increase also, easily causes shorten cutter life, and working (machining) efficiency is corresponding reduction also, can not meet the processing requirement of axis products.
Summary of the invention
The technical problem to be solved in the present invention is: the problem existing for prior art, a kind of axis products deep hole processing drill bit and method are provided, and improve the deep hole machining efficiency of axis products, extend the service life of cutter, and safety coefficient during operation is high.
The technical problem to be solved in the present invention realizes by the following technical solutions: a kind of axis products deep hole processing drill bit, comprise cutter hub and the blade that is fixedly connected on cutter hub taper work end, chip removal chamber is set in described cutter hub, at cutter hub taper work end, be provided with the chip-removal hole communicating with described chip removal chamber, described blade comprises main blade and at least two auxiliary blades, described main blade is fixedly connected on the end of cutter hub taper work end, main blade free end end is " V " font apex point, and parallel but do not overlap through the axis of main blade apex point and the central axis of cutter hub, described auxiliary insert ring main blade distributes, and between an auxiliary blade cut sword place annular region of main blade cutting edge place annular region and contiguous main blade, between the auxiliary blade cut sword place annular region of main blade one side and the auxiliary blade cut sword place annular region in the same sequence of main blade opposite side, all exist overlapping, between described main blade and adjacent auxiliary blade, between adjacent auxiliary blade, chip dividing groove is all set, described chip dividing groove is all connected and communicates with chip-removal hole, the cutting edge of described main blade and auxiliary blade is all positioned at the same taper cutwork face of drill bit.
Preferably, described auxiliary blade comprises the first auxiliary blade that lays respectively at the relative both sides of main blade, the second auxiliary blade and the 3rd auxiliary blade and the 4th auxiliary blade, between main blade cutting edge place annular region wherein and the 3rd auxiliary blade cut sword place annular region, between the first auxiliary blade cut sword place annular region and the 4th auxiliary blade cut sword place annular region, between the second auxiliary blade cut sword place annular region and the 3rd auxiliary blade cut sword place annular region, all exist overlapping, described main blade and the second auxiliary blade, between the 3rd auxiliary blade, between the first auxiliary blade and the second auxiliary blade and between the 3rd auxiliary blade and the 4th auxiliary blade, chip dividing groove is all set, described chip dividing groove is all connected and communicates with chip-removal hole.
Preferably, the first described auxiliary blade cut tread degree is greater than the second auxiliary blade, the 3rd auxiliary blade and the 4th auxiliary blade cut tread degree.
Preferably, described drill bit also comprises guide pad, described guide pad is fixedly connected on the cylinder outer surface adjacent with cutter hub taper cutwork face, and the radially-outer surface of guide pad is arc surface, its radially maximum gauge equal the maximum gauge of cutter hub taper cutwork face.
Preferably, described axis and the spacing between the central axis of cutter hub through main blade apex point is 3-5mm.
Preferably, on described cutter hub, one end relative with main blade arranges nipple.
An axis products deep hole processing method, is connected above-mentioned deep hole processing drill bit fix with hollow drill one end, and the described drilling rod other end is connected with power set and fixes, and the chip removal chamber on drill bit communicates with the hollow cavity of drilling rod; When being fixed on workpiece on workbench and carrying out deep hole machining, described drilling rod and drill bit are driven and are made gyration and axial linear movement by power set.
Preferably, when workpiece is carried out to deep hole machining, along the direction of advance of drill bit to the cooling-lubricant that passes into certain pressure in the deep hole having processed.
Preferably, the connecting portion of described drilling rod and drill bit arranges the screw thread of same specification, and described drill bit forms screw thread with drilling rod and is flexibly connected.
Compared with prior art, the invention has the beneficial effects as follows: by main blade being set on drill bit cutter hub, auxiliary blade, chip dividing groove is divided into some sections and be staggered by the main cutting edge of drill bit, when bit, be positioned at the main blade of the same taper cutwork face of drill bit, the cutting edge of auxiliary blade has formed the cutwork face of a sealing, this cutwork face keeps comprehensive engagement with the deep hole scope of operation all the time in bit bore process, cutting speed and the cutting quality of the deep hole scope of operation have been guaranteed, but also can limit the Breadth Maximum of smear metal, so that minute bits during bore operation, chip removal, owing to passing through the axis of main blade apex point and the central axis of cutter hub, keep certain side-play amount, overcome the defect that sheet type fluted drill chisel edge is long, axial resistance is large, and during bore operation, can form guiding stem stem, make drill bit there is good guidance quality, during boring, be difficult for deflection.Be cut the chip removal chamber that the chip getting off enters chip dividing groove and enters cutter hub by chip-removal hole, be finally discharged from outside drill bit cutter hub.By this segmentation, staggered multi-tool edge drill bit, realized reliable minute bits and interior chip removal mode in bit bore process, greatly improved the drilling efficiency that axis products is carried out to deep hole machining, make be extended the service life of cutter simultaneously, and in process, can not cause splashing of chip, the safety coefficient while being conducive to improve bore operation.
Accompanying drawing explanation
Fig. 1 is the front view of a kind of axis products deep hole processing drill bit of the present invention.
Fig. 2 is the left view of a kind of axis products deep hole processing drill bit of the present invention.
Fig. 3 is the partial enlarged drawing of A portion in Fig. 1.
Fig. 4 is the process principle figure of a kind of axis products deep hole processing method of the present invention.
The auxiliary blade of mark in figure: 1-first, the auxiliary blade of 2-second, 3-main blade, 4-the 3rd auxiliary blade, 5-the 4th auxiliary blade, 6-guide pad, 7-chip removal chamber, 8-nipple, 9-cutter hub, 10-chip-removal hole, 11-power set, 12-drilling rod, 13-drill bit, 14-clamp mechanism, 15-workpiece, 16-chip dividing groove.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with the drawings and specific embodiments, the present invention is described in detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
A kind of axis products deep hole processing drill bit as shown in Figure 1 and Figure 2, taper work end at cutter hub 9 is welded with main blade 3 and the first auxiliary blade 2 of auxiliary blade 1, second that lays respectively at main blade 3 relative both sides and the 3rd auxiliary blade 4 and the 4th auxiliary blade 5, main blade 3 is wherein weldingly fixed on the end of cutter hub 9 taper work ends, its free end end is " V " font apex point, parallel but do not overlap through the axis of main blade 3 apex points and the central axis of cutter hub 9, the first auxiliary blade 1 wherein, the second auxiliary blade 2 and the 3rd auxiliary blade 4 and the 4th auxiliary blade 5 ring main blades 3 distribute, described main blade 3 and the first auxiliary blade 1, the cutting edge of the second auxiliary blade 2 and the 3rd auxiliary blade 4 and the 4th auxiliary blade 5 is all positioned at the same taper cutwork face of drill bit, and between main blade 3 cutting edge place annular regions and the 3rd auxiliary blade 4 cutting edge place annular regions, between the first auxiliary blade 1 cutting edge place annular region and the 4th auxiliary blade 5 cutting edge place annular regions, between the second auxiliary blade 2 cutting edge place annular regions and the 3rd auxiliary blade 4 cutting edge place annular regions, all there is certain overlapping area.In cutter hub 9, be provided with columniform chip removal chamber 7, at cutter hub 9 taper work ends, be provided with the chip-removal hole 10 communicating with chip removal chamber 7.Between described main blade 3 and the second auxiliary blade the 2, the 3rd auxiliary blade 4, between the first auxiliary blade 1 and the second auxiliary blade 2 and between the 3rd auxiliary blade 4 and the 4th auxiliary blade 5, chip dividing groove 16 is all set, chip dividing groove 16 is all connected and communicates with chip-removal hole 10.
Adopting the drill bit of said structure is a kind of segmentation, be staggered and the interior chip removal mode drill bit of asymmetric multi-tool edge, when bit, be positioned at the main blade 3 of the same taper cutwork face of drill bit, the first auxiliary blade 1, the cutting edge of the second auxiliary blade 2 and the 3rd auxiliary blade 4 and the 4th auxiliary blade 5 has formed an enclosed cutwork face jointly, this cutwork face keeps comprehensive engagement with the deep hole scope of operation all the time in bit bore process, therefore, when boring, can not leave burr, be conducive to improve drill bit to the cutting speed of the deep hole scope of operation and cutting quality.Because the whole main cutting edge of drill bit is separated into five sections, and each section has different positions with respect to same center line, so just the width of smear metal can be divided into five sections, thereby greatly reduced the Breadth Maximum of single smear metal, minute bits while making bore operation, chip removal is more prone to, reliably, and the cutting-impact power that each section of cutting edge bears reduces, be conducive to extend the service life of cutter.The axis of process main blade 3 apex points and the central axis of cutter hub 9 keep certain side-play amount, conventionally this side-play amount is 3-5mm, can make like this drill bit when bore operation, form guiding stem stem, guarantee that drill bit has good guidance quality, thereby when boring, be difficult for deflection, avoided traditional defect that sheet type fluted drill chisel edge is long, axial resistance is large.Be cut the chip major part of getting off and enter chip dividing groove 16, then by chip-removal hole 10, enter the chip removal chamber 7 of cutter hub 9 inside, finally along chip removal chamber 7, be discharged from outside drill bit cutter hub 9, drilling efficiency and drilling quality in the time of can greatly improving deep hole machining by this interior chip removal mode, and can not cause splashing of chip, the safety coefficient while being conducive to improve bore operation.
When bore operation, consider that the cutting-impact power that other auxiliary blades of cutting-impact force rate that the first auxiliary blade 1 bears bear is larger, can make the first auxiliary blade 1 cutting edge width be greater than the second auxiliary blade the 2, the 3rd auxiliary blade 4 and the 4th auxiliary blade 5 cutting edge width, to guarantee that the first auxiliary blade 1 has relatively high impact strength, is conducive to improve the functional reliability of drill bit.In addition, because each section of cutting edge of drill bit is to be distributed in asymmetrically unbearable both sides, when bore operation, the most radial cutting force that drill bit bears also can remain a certain size radial load after repealing by implication.For balance radial cutting force, near on the cutter hub 9 of drill bit tapering point, two guide pads 6 are being set, described two guide pads 6 all adopt carbide alloy guide pad, and be roughly 90 degree angles and be weldingly fixed on the cylinder outer surface adjacent with cutter hub 9 taper cutwork faces, the radially-outer surface of each guide pad 6 is arc surface, its radially maximum gauge equal the maximum gauge of cutter hub 9 taper cutwork faces, like this when carrying out bore operation, can, so that the arc surface of guide pad 6 is close on the machined surface of boring, avoid boring to produce deflection.When carrying out bore operation, drill bit is not only done gyration, also make axial linear movement simultaneously, especially during deep hole processing, a little deflection of drill bit may cause the significantly deflection of deep hole, for fear of this thing happens, the radially-outer surface of guide pad 6 can be processed into the inclination arc surface with axial tapering, the axial cross section that namely makes guide pad 6 is back taper, and guide pad 6 is maximum in the radial height near cutter hub 9 taper cutwork face one end.Preferably, guide pad 6 cylindricals should grind the back taper of 0.2-0.3mm, make the maximum end of the axial cross section of guide pad 6 exceed 0.2-0.3mm than smallest end, such structure not only can guarantee that bit cutting is steady, also the deep hole hole wall of having processed is played to extruding and guide effect simultaneously, be conducive to improve working (machining) efficiency and the crudy of deep hole.
While utilizing drill bit of the present invention to carry out deep hole machining to axis products, its processing method principle as shown in Figure 4, particularly:
First, workpiece 15 is fixed on workbench by clamp mechanism 14, adjusts clamp mechanism 14 and make workpiece 15 in level;
Then, above-mentioned deep hole processing drill bit 13 is connected and is fixed with hollow drill 12 one end, drilling rod 12 other ends are connected and fix with power set 11, and the chip removal chamber 7 on described drill bit 13 should keep communicating with the hollow cavity on drilling rod 12;
Next, start power set 11 and carry out deep hole machining, power set 11 drive drilling rods 12 and drill bit 13 to make gyration and axial linear movement, the gyration by drill bit 13 and the feed motion boring procedure that combined.The chip major part of cutting enters chip dividing groove 16, then by chip-removal hole 10, enters the chip removal chamber 7 of cutter hub 9 inside, and the chip in chip removal chamber 7 enters the hollow cavity of drilling rod 12 along chip removal chamber 7, be finally discharged in the chip retracting device outside drilling rod 12.
In boring procedure, because of caloric value, cause drill bit 13 excess Temperatures too greatly so that damage the main cutting edge of drill bit 13, when axis products workpiece 15 is carried out to deep hole machining, can be along the direction of advance of drill bit 13 to the cooling-lubricant that passes into certain pressure in the deep hole having processed, this cooling-lubricant carries out cooling in time to drill bit 13 on the one hand, improve the service life of drill bit 13, the most chips that simultaneously also the make cut lubricating fluid that is cooled pours chip removal chamber 7 smoothly, and along with the hollow cavity of lubricating fluid discharge drilling rod 12.Because the working face of drill bit 13 main cutting edges is taper surfaces, for the chip that makes the to cut lubricating fluid that is cooled as much as possible pours chip removal chamber 7 smoothly, the top angle of taper cutwork face that can drill bit 13 is set to 135-145 degree.By this interior chip removal mode, greatly improve drilling efficiency and drilling quality, also can not cause splashing of chip, be conducive to improve the safety coefficient of bore operation.According to the different requirements from intensity to wearability of drill bit 13 main cutting edge each several parts, conventionally, the main blade 3 that is arranged on drill bit 13 middle parts adopts the YG8 blade of good toughness, auxiliary blade adopts the YT15 blade that hardness is high, wearability is good, cutter hub 9 adopts 40Cr steel, thereby make drill bit 13 go for the deep hole machining operating mode of unlike material axis products, and be conducive to extend the service life of drill bit cutter, improve deep hole machining efficiency.
The replacing of considering drill bit 13 is convenient, one end relative with main blade 3 on cutter hub 9 arranges nipple 8, correspondence is with it, drilling rod 12 and the screw thread of drill bit 13 connecting portions are arranged to same specification screw thread, described drill bit 13 forms screw thread by nipple 8 with drilling rod 12 and is flexibly connected, the very big like this dismounting that facilitates drill bit 13.Described nipple 8 is preferably arranged to shallow tooth rectangular thread joint, and its screw thread depth of threat is 1.5-2mm, as shown in Figure 3.So just can adopt same diameter drilling rod 12 to be fixedly connected with power set 11, at needs more during bit change 13, dismounting drilling rod 12 simultaneously, both rigidity and the intensity of cutter hub 9 can have been guaranteed, so that can suitably increase the amount of feeding of drill bit 13 when boring, can reduce tool change time again, thereby improve the working (machining) efficiency of deep hole.Through compare test, compare with adopting traditional thin slice brill formula deep hole machining mode, adopt drill bit 13 of the present invention and deep hole processing method to carry out deep hole machining to same axis products, its working (machining) efficiency can promote approximately four times.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, the quantity that it should be pointed out that drill bit main cutting edge can be also three above odd numbers, i.e. main blade and the auxiliary blade of even number, concrete quantity is determined according to deep hole size to be processed.Therefore, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. an axis products deep hole processing drill bit, comprise cutter hub (9) and be fixedly connected on the blade of cutter hub (9) taper work end, it is characterized in that: chip removal chamber (7) is set in described cutter hub (9), at cutter hub (9) taper work end, be provided with the chip-removal hole (10) communicating with described chip removal chamber (7), described blade comprises main blade (3) and at least two auxiliary blades, described main blade (3) is fixedly connected on the end of cutter hub (9) taper work end, main blade (3) free end end is " V " font apex point, and parallel but do not overlap through the axis of main blade (3) apex point and the central axis of cutter hub (9), described auxiliary insert ring main blade (3) distributes, and between an auxiliary blade cut sword place annular region of main blade (3) cutting edge place annular region and contiguous main blade (3), be positioned at the auxiliary blade cut sword place annular region of main blade (3) one sides and be positioned between the auxiliary blade cut sword place annular region of same sequence of main blade (3) opposite side, all exist overlapping, between described main blade (3) and adjacent auxiliary blade, chip dividing groove (16) is all set between adjacent auxiliary blade, described chip dividing groove (16) is all connected and communicates with chip-removal hole (10), the cutting edge of described main blade (3) and auxiliary blade is all positioned at the same taper cutwork face of drill bit.
2. a kind of axis products deep hole processing drill bit according to claim 1, it is characterized in that: described auxiliary blade comprises the first auxiliary blade (1) that lays respectively at the relative both sides of main blade (3), the second auxiliary blade (2) and the 3rd auxiliary blade (4) and the 4th auxiliary blade (5), between main blade wherein (3) cutting edge place annular region and the 3rd auxiliary blade (4) cutting edge place annular region, between the first auxiliary blade (1) cutting edge place annular region and the 4th auxiliary blade (5) cutting edge place annular region, between the second auxiliary blade (2) cutting edge place annular region and the 3rd auxiliary blade (4) cutting edge place annular region, all exist overlapping, described main blade (3) and the second auxiliary blade (2), between the 3rd auxiliary blade (4), between the first auxiliary blade (1) and the second auxiliary blade (2) and between the 3rd auxiliary blade (4) and the 4th auxiliary blade (5), chip dividing groove (16) is all set, described chip dividing groove (16) is all connected and communicates with chip-removal hole (10).
3. a kind of axis products deep hole processing drill bit according to claim 2, is characterized in that: the first described auxiliary blade (1) cutting edge width is greater than the second auxiliary blade (2), the 3rd auxiliary blade (4) and the 4th auxiliary blade (5) cutting edge width.
4. according to a kind of axis products deep hole processing drill bit described in claim 1 or 2, it is characterized in that: also comprise guide pad (6), described guide pad (6) is fixedly connected on the cylinder outer surface adjacent with cutter hub (9) taper cutwork face, and the radially-outer surface of guide pad (6) is arc surface, its radially maximum gauge equal the maximum gauge of cutter hub (9) taper cutwork face.
5. according to a kind of axis products deep hole processing drill bit described in claim 1 or 2, it is characterized in that: the described axis through main blade (3) apex point and the spacing between the central axis of cutter hub (9) are 3-5mm.
6. according to a kind of axis products deep hole processing drill bit described in claim 1 or 2, it is characterized in that: the upper one end relative with main blade (3) of described cutter hub (9) arranges nipple (8).
7. an axis products deep hole processing method, it is characterized in that: deep hole processing drill bit as claimed in claim 1 (13) is connected and is fixed with hollow drill (12) one end, described drilling rod (12) other end is connected and fixes with power set (11), and the chip removal chamber (7) on drill bit (13) communicates with the hollow cavity of drilling rod (12); When being fixed on workpiece (15) on workbench and carrying out deep hole machining, described drilling rod (12) and drill bit (13) are driven and are made gyration and axial linear movement by power set (11).
8. a kind of axis products deep hole processing method according to claim 7, it is characterized in that: when workpiece (15) is carried out to deep hole machining, along the direction of advance of drill bit (13) to the cooling-lubricant that passes into certain pressure in the deep hole having processed.
9. according to a kind of axis products deep hole processing method described in claim 7 or 8, it is characterized in that: the connecting portion of described drilling rod (12) and drill bit (13) arranges the screw thread of same specification, described drill bit (13) forms screw thread with drilling rod (12) and is flexibly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277581.3A CN104070207B (en) | 2014-06-20 | 2014-06-20 | A kind of axis products deep hole processing drill bit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277581.3A CN104070207B (en) | 2014-06-20 | 2014-06-20 | A kind of axis products deep hole processing drill bit and method |
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| Publication Number | Publication Date |
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| CN104070207A true CN104070207A (en) | 2014-10-01 |
| CN104070207B CN104070207B (en) | 2016-05-11 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104763346A (en) * | 2015-03-12 | 2015-07-08 | 孙飞 | Hollow-out inner cutting discharge alloy drill bit |
| CN106735456A (en) * | 2016-11-11 | 2017-05-31 | 丹阳宝联五金制品有限公司 | A kind of interior chip-removal drill bit |
| CN107584159A (en) * | 2016-07-07 | 2018-01-16 | 昆山捷鑫辰精密工业刀具有限公司 | A kind of high-intensity welding formula carbide drill |
| CN108788252A (en) * | 2018-06-21 | 2018-11-13 | 上海电机学院 | A kind of processing method of drilling tool and its looping pit |
| CN109570577A (en) * | 2018-12-25 | 2019-04-05 | 浙江欣兴工具有限公司 | A kind of deep hole machining bta deep hole drilling and its drilling process |
| CN111390238A (en) * | 2020-04-27 | 2020-07-10 | 昆明学院 | Heavy-duty lathe spray suction drill mechanical system |
| CN112091288A (en) * | 2020-07-27 | 2020-12-18 | 北京实验工厂有限责任公司 | Lengthened twist drill for processing elongated hole |
| CN112222487A (en) * | 2020-09-22 | 2021-01-15 | 华东理工大学 | Drill bit convenient to chip removal |
| CN112809047A (en) * | 2020-12-30 | 2021-05-18 | 浙江欣兴工具有限公司 | Rolling support type deep hole drill |
| CN115365765A (en) * | 2022-07-29 | 2022-11-22 | 广联航空工业股份有限公司 | Deep hole machining method with position precision requirement |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763346A (en) * | 2015-03-12 | 2015-07-08 | 孙飞 | Hollow-out inner cutting discharge alloy drill bit |
| CN107584159A (en) * | 2016-07-07 | 2018-01-16 | 昆山捷鑫辰精密工业刀具有限公司 | A kind of high-intensity welding formula carbide drill |
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| CN109570577B (en) * | 2018-12-25 | 2023-10-13 | 浙江欣兴工具股份有限公司 | Inner chip removal deep hole drill for deep hole machining and drilling method thereof |
| CN111390238B (en) * | 2020-04-27 | 2022-03-15 | 昆明学院 | Heavy-duty lathe spray suction drill mechanical system |
| CN111390238A (en) * | 2020-04-27 | 2020-07-10 | 昆明学院 | Heavy-duty lathe spray suction drill mechanical system |
| CN112091288A (en) * | 2020-07-27 | 2020-12-18 | 北京实验工厂有限责任公司 | Lengthened twist drill for processing elongated hole |
| CN112222487A (en) * | 2020-09-22 | 2021-01-15 | 华东理工大学 | Drill bit convenient to chip removal |
| CN112809047A (en) * | 2020-12-30 | 2021-05-18 | 浙江欣兴工具有限公司 | Rolling support type deep hole drill |
| CN112809047B (en) * | 2020-12-30 | 2022-07-19 | 浙江欣兴工具股份有限公司 | Rolling support type deep hole drill |
| CN115365765A (en) * | 2022-07-29 | 2022-11-22 | 广联航空工业股份有限公司 | Deep hole machining method with position precision requirement |
| CN115365765B (en) * | 2022-07-29 | 2023-11-21 | 广联航空工业股份有限公司 | Deep hole machining method with position precision requirement |
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