Use axial pulse vibration to raise the feed rate of deep Kong Zuan

Current, the axial pulse oscillator that Botek company makes, its are small norms structure can be used at the diameter most greatly the deep Kong Zuan of 4mm, and big norms structure is used at the diameter to be (4~12) the deep Kong Zuan of Mm. In a word: Open the deep Kong Zuan that has the straight chamfer that discharge bits, its machine efficiency to be cut the limitation of bits figuration element. Pass pulse vibration, make full use of the device that the treatment latent capacity of deep Kong Zuan needs to develop what with cutting tool geometry appearance has nothing to do one kind to be able to break bits reliably accordingly, so that can make full use of,leave have the straight chamfer that discharge bits the treatment efficiency that deep Kong Zuanqian is in, botek company (place where troops are stationed is in Riederich) say of lab director Mr Jurgen Deeg. Be being used and did not use axial - when pulse oscillator undertakes deep Kong Zuan is cut, cut bits through what its arise (the figuration that cut bits and material are concerned) the comparison that undertakes makes clear (watch 1) , use axial - pulse oscillator was to achieve those who book to stop bits aim. Axial - pulse oscillator (oscillator of pulse of the following abbreviation) it is the unit with a kind of not big fee, it can pack cutting tool very simply, on drive main shaft, the use condition that and can suit according to the requirement of the user has a machine tool (be like 7:24 big taper, columnar handle and flange) . Pulse oscillator has structure of two kinds of levels: Small norms structure is used at the diameter most greatly the deep Kong Zuan of 4mm, and big norms structure is used at the diameter to be (4~12) the deep Kong Zuan of Mm (graph 1) . The function of structure of these two kinds of levels defines as follows: Express 1.

Structure of ◆ small norms: Cutting tool diameter: Most greatly 4mm; Top rotate speed: 11000 R/min, can adjust: Stroke can be undertaken adjustment by the user, weight: 1.

3 Kg; Airframe diameter: 50mm; Length: 140mm, structure of ◆ big norms: Cutting tool diameter: 4mm~12mm; Top rotate speed: 6000 R/min, already presetting is good: Stroke is adjusted by the manufactory, weight: 4.

4 Kg; Airframe diameter: 70mm; Length: 160mm, the device that needs to be different from structure of these two levels can have an inquiry to the company. Current, a kind of prototype is in research and development, its structure dimension wants than standard structure small much. When motion makes the pulse of move back and forth of cutting tool break bits to move in treatment facilities reliably, the pulse of move back and forth that oscillator of two kinds of pulse can make deep Kong Zuan realizes setting in bore direction moves, make from time to time of the ply that cut bits increases to decrease with from time to time from this. Force for zero hour when the ply that cut bits cut bits to break off. Oscillatory to pulse, it is to pass a figuration annulus to generate mechanical pulse travel, the type of optimal ground and cutting tool, cutting tool diameter and real bore process phase suit: Good by manufactory presetting perhaps, or, to oscillator of small norms pulse it is OK will undertake adjustment on oscillator. With respect to the working principle of pulse oscillator, mr Deeg explains: Here, it is not percussion drill cut, however the pulse of a kind of setting is oscillatory. Pulse journey is counted from beginning to end with main shaft rotate speed it is consistent. Shift of cutting tool generation is only in vibration. In the process that has on the machine tool, pulse motion cannot determine, the quality that moves because of here is too small. Also eliminated to produce such as to make to the machine tool so the undesirable consequence of deflection of main shaft bearing. The process breaks bits reliably to be helpful for raising feed speedometer 2.

What what * lists the cutting dosage that uses axial pulse oscillator to undertake deep Kong Zuan is cut here is the referenced value that experimenting for long or already determined in batch production pulse oscillator makes a process break bits reliably. When the cutting tool that has the straight chamfer that discharge bits to leave from this undertakes deep Kong Zuan is cut, the process capability that improved cutting tool and improved manufacturing efficiency. For example, drive the double blade of integral hard alloy that has the straight chamfer that discharge bits deep Kong Zuan, apply Yu Gang and generation difficultly to grow the treatment of the material that cuts bits through using pulse oscillator to also can be without. Diameter of a cutting tool is mixed for 6mm auger cut deepness to be 45 X D Mm (D is cutting tool diameter, interpret is noted) Shuang Ren deep Kong Zuan, below the case that uses minim to lubricate, vf of first-rate feed speed can be as high as 1000 Mm/min. If do not use pulse oscillator, put as a result of the reason of cutting tool and workpiece material in the issue of the figuration that cut bits with typical move, want to achieve so high feed rate, process is fluky. Deep to using the Chan Ren with oscillatory pulse Kong Zuan is cut, raising feed rate significantly also is possible. The odd blade deep opening that uses structure of integral hard alloy is gotten (the diameter is 3mm) treatment steel (42CrMo4) when feed speed can be without difficult ground to achieve Vf = 400 Mm/min, and process is quite reliable. To bigger broach diameter, for example such 8mm diameter, when processing 16MnCr5 alloy steel, the feed speed of implementation can achieve Vf =800 Mm/min. Here, the cooling lubricating fluid that odd blade deep Kong Zuan cuts craft to be used generally and its discharge, pressure and temperature also apply to the Chan Ren that uses pulse vibration deep Kong Zuan is cut. Deep aperture gets the Chan Ren that uses pulse oscillator, the cutting dosage row that its and workpiece material concern is in watch 2. Graph 2.

The Jurgen Deeg of the inventor that regards axial pulse as oscillator and trial section leader believes firmly: The treatment efficiency that this kind of device can improve to cutting tool of the straight chamfer that discharge bits undertakes deep Kong Zuan is cut significantly, and still maintained odd blade deep Kong Zuan at the same time cut the good point with original craft. Mr Deeg emphasizes point out: "Cut photograph comparing with groovy deep Kong Zuan, while when be being machined, we are raising feed rate and reduce rotate speed significantly. Reduced cutting time and added advantageous use condition, the condition that can inspect workpiece material to pledge and the service life that different level land prolongs cutting tool. " in experimenting for many times, we notice, oscillatory to using pulse efficient deep Kong Zuan is cut, also can obtain odd blade deep aperture to get the linearity that cuts good in that way hole, expert Mr Deeg explains. To using the deep Kong Zuan of pulse oscillator to cut, besides winning the improvement that narrates process, the general advantage that still has odd blade deep Kong Zuan to cut craft, for example, the linearity of good aperture, circularity and exterior quality. Use the efficient deep Kong Zuan of pulse oscillator to cut, its special craft parameter can arise be similar to the burr with tiny in that way boring. This resembles the in that way circumstance when groovy deep Kong Zuan is cut. Oscillatory to using pulse efficient deep Kong Zuan is cut for, what narrate an advantage to be able to use standard cutting tool completely to obtain. To achieve highest treatment efficiency, for example cutting tool should be ground through special blade come to optimal ground comfortable deserve to machine a condition. Cutting tool operation is used simply together those who undertake efficient deep Kong Zuan is cut is a few otherer cutting tool photograph is compared, handy, fast with charge not high the crucial point is ground again is a main good point that deep aperture of the straight chamfer that discharge bits is gotten. User even if will undertake edge is ground again by oneself also need to spend quite low fare only. Can abandon the purify coating of cutting tool and new coat likewise, what this wins remarkable charge and time is managing, and reduced the amount of have enough to meet need of cutting tool. Same applicable is on machining center on all and common deep aperture drilling machine, the installation of pulse oscillator and moving is effective, do not have a problem completely. And should notice to machining center, it is OK that high-pressured cooling fluid centers the cooling fluid of supply unit to answer pass existing main shaft. If people wants to install to prevent,turn device, so it is necessary that the specific requirement photograph of pulse oscillator and machine tool matchs. When the machining center that trades knife unit automatically at holding stock when application, considering the structural dimension of pulse oscillator, the proposal uses extraction type to exchange knife station. The axial pulse oscillator of Botek company, rose to drive the efficiency when cutting tool of the straight chamfer that discharge bits undertakes deep Kong Zuan is cut. Inspect workpiece material to pledge with craft parameter can be mixed simply the fee with not big expenditure will raise feed rate, and the numerous advantage that holds the Chan Ren deep Kong Zuan with responsible process to cut craft at the same time. CNC Milling