CN1190288C - Method and equipment for drilling micro-holes with variable parameter vibration drill - Google Patents
Method and equipment for drilling micro-holes with variable parameter vibration drill Download PDFInfo
- Publication number
- CN1190288C CN1190288C CNB021586942A CN02158694A CN1190288C CN 1190288 C CN1190288 C CN 1190288C CN B021586942 A CNB021586942 A CN B021586942A CN 02158694 A CN02158694 A CN 02158694A CN 1190288 C CN1190288 C CN 1190288C
- Authority
- CN
- China
- Prior art keywords
- drilling
- equipment
- main shaft
- motor
- screw
- 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
Images
Landscapes
- Drilling And Boring (AREA)
Abstract
The present invention discloses a method and equipment for drilling micropores with variable parameter vibration. The equipment is composed of a controller, a power source, a stepping motor, a precise spring clamping head and an outer sleeve tube, wherein a screw rod brace used for connecting a shaft coupling and a ball screw rod is arranged in the outer sleeve tube; an output shaft of the motor is connected with the shaft coupling, and the other end of the shaft coupling is connected with the ball screw rod; the ball screw rod and a DC high-speed motor are sheathed in a motor brace of a main shaft, the motor brace of the main shaft is integrally connected with a copper sleeve by a pressing plate, the motor is fixed on the pressing plate and is connected with the power source, and piezoelectric ceramics and a spring are arranged in the copper sleeve at the lower end of the pressing plate; the output shaft of the motor is connected with the main shaft, and a drill bit is fixed on a high-speed precise main shaft by the precise spring clamping head. The method is characterized in that various processing parameters are respectively adopted according to various drilling stages in each drilling process, wherein the drilling stages can be divided into a drilling starting stage, a drilling stage and an exit drilling stage; the vibration frequency, the vibration amplitude, the rotary peed and the feeding speed of a drill bit are set as four processing parameters.
Description
Technical field
The present invention relates to a kind of device of processing micropore, specifically be meant a kind of equipment of variable parameter vibration drilling micropore.
Background technology
The big capillary processing technological requirement of draw ratio is arranged on a large amount of parts of industrial circles such as Aeronautics and Astronautics, automobile, and the crudy of micropore such as surface roughness, form accuracy, outlet burr etc. are directly connected to the quality of product.At present, the main method of processing micro hole (diameter is less than 1mm) both at home and abroad has: common drilling, drill for high-speed, spark machined, electric spark composite ultraphonic vibration processing and Laser Processing etc.There are some problems in these technological method for processing, as the micro hole surface of spark machined and Laser Processing work hardening layer are arranged, and form accuracy is not high.In addition, the process equipment that has also occurred the vibration micro hole machining both at home and abroad, but the problem of its existence is a very flexible, automaticity is low, when the processing micro hole, can not select suitable machined parameters according to the different process segments, as rotating speed, Oscillation Amplitude, the vibration product rate and the amount of feeding etc., in order further to improve the crudy of micro hole, reduce process route, the inventor has proposed the method and apparatus of variable parameter vibration drilling micropore, this equipment can effectively improve the flexibility of processing technology, select suitable machined parameters at different micropores and part material, simultaneously, device structure is compact to design, easy for installation flexible, can be applied to many kinds of occasions.
Summary of the invention
The purpose of this invention is to provide a kind of special process method that is different from traditional drilling processing, be on the basis of traditional drilling processing, to make drilling tool produce an axial vibration, thereby effectively improve processing conditions, improve capillary processing quality and efficient, special micro hole problems of drilling at difficult-to-machine material, a processing technology difficult problem be can effectively solve, automatization level and flexibility improved.
The equipment of a kind of variable parameter vibration drilling micropore of the present invention, by controller, power supply, stepper motor, collet, outer sleeve is formed, be provided with the connection shaft coupling in its outer sleeve, the leading screw of ball-screw supports, the output shaft of stepper motor is connected on the shaft coupling, the other end of shaft coupling connects ball-screw, ball-screw, the direct current high-speed electric expreess locomotive is enclosed within the spindle motor support, spindle motor supports and fuses with copper sheathing by pressing plate, the direct current high-speed electric expreess locomotive is fixed on the pressing plate and connects power supply, be provided with piezoelectric ceramics and spring in the copper sheathing of pressing plate lower end, the output shaft of direct current high-speed electric expreess locomotive connects the high speed and precision main shaft, and collet is fixed on drill bit on the high speed and precision main shaft.
The equipment of described variable parameter vibration drilling micropore, its stepper motor output shaft drives ball-screw by shaft coupling and rotates, ball-screw is converted into gyration the rectilinear motion of the axis direction of spindle motor support, acting in conjunction by pressing plate and spring, piezoelectric ceramics is applied certain pretightning force, drive the high speed and precision main shaft and produce axial feed, for bit cutting provides axial feed.
The equipment of described variable parameter vibration drilling micropore, its exciting source adopt piezoelectric ceramics to produce 1～1000Hz low-frequency vibration and provide.
The equipment of described variable parameter vibration drilling micropore is characterized in that: the low-frequency vibration direct-drive high speed and precision main shaft that piezoelectric ceramics produces produces the response of 1～10 μ m amplitude.
The equipment of described variable parameter vibration drilling micropore, its spring clip adopts the precision spring chuck, has guaranteed to install the good drill bit rotating accuracy of drill bit.
The equipment of described variable parameter vibration drilling micropore, the axis feeding mode of coaxial-type directly drives the mode of ball-screw by stepper motor, drives high speed and precision main shaft, piezoelectric ceramics, the together feeding of direct current high-speed electric expreess locomotive.
The present invention adopts coaxial feed arrangement, and advantage is that the entire equipment volume is little, simple and compact for structure, feeding is steady, equipment can be installed on any frame, and axis can improve equipment application flexibility and reliability greatly towards the optional position.
Description of drawings
Fig. 1 is a device structure schematic diagram of the present invention.
Fig. 2 is installed in schematic diagram on the common drilling operation frame with equipment of the present invention.
Fig. 3 is equipment drilling micro hole of the present invention is drilled in the axial force aspect with common micropore a comparison diagram.
Among the figure: 1. stepper motor 2. outer sleeves 3. ball-screws 4. controllers 5. power supplys 6. direct current high-speed electric expreess locomotives 7. piezoelectric ceramics 8. high speed and precision main shafts 9. springs 10. copper sheathings 11. precision spring chucks 12. shaft couplings 13. spindle motors support 14. pressing plates, 15. shelfs
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
See also shown in Figure 1, the equipment of a kind of variable parameter vibration drilling micropore of the present invention, by controller 4, power supply 5, stepper motor 1, precision spring chuck 11, outer sleeve 2 is formed, be provided with in its outer sleeve 2 and connect shaft coupling 12, the leading screw of ball-screw 3 supports, the output shaft of stepper motor 1 is connected on the shaft coupling 12, the other end of shaft coupling 12 connects ball-screw 3, ball-screw 3, direct current high-speed electric expreess locomotive 6 is enclosed within spindle motor and supports in 13, spindle motor supports 13 and fuses with copper sheathing 10 by pressing plate 14, direct current high-speed electric expreess locomotive 6 is fixed on the pressing plate 14 and connects power supply 5, be provided with piezoelectric ceramics 7 and spring 9 in the copper sheathing 10 of pressing plate 14 lower ends, the output shaft of direct current high-speed electric expreess locomotive 6 connects high speed and precision main shaft 8, and precision spring chuck 11 is fixed on drill bit on the high speed and precision main shaft 8.Make piezoelectric ceramics 7 produce the flexible of same frequency by the alternating voltage of applying 1～1000Hz for piezoelectric ceramics 7, last high speed and precision main shaft 8 integral body that directly promote produce axial vibrations, driving frequency and driving voltage by controller 4 adjusting power supplys 5 can make drill bit produce the vibration of axial different frequency and amplitude.Main axle structure of the present invention has adopted the mode of exciting high speed and precision main shaft 8 on the piezoelectric ceramics 7, because high speed and precision main shaft 8 is very light, is easy to also be produced than large amplitude by exciting.The maximum speed of high speed and precision main shaft 8 can reach 30,000r/min, and have precision spring chuck 11, can guarantee that the rotating accuracy of drill bit reaches 1 μ m.Spindle drive motor of the present invention has been selected infinitely variable speeds direct current high-speed electric expreess locomotive 6 for use, can regulate the rotating speed of direct current high-speed electric expreess locomotive by controller 4.For preventing that drill bit from causing damage owing to feeding is inhomogeneous in process, the present invention adopts the coaxial-type feeding mode, this feeding mode is directly to drive ball-screw 3 by stepper motor 1 to drive copper sheathing 10 with direct current high-speed electric expreess locomotive 6, piezoelectric ceramics 7, high speed and precision main shaft 8, spring 9 feedings, minimum feeding is a control impuls feeding 1 μ m, and does not have creeping phenomenon.
In the present invention, the method for drilling micropore is to be in the different stages according to drilling processing to choose different machined parameters, and drilling processing comprises three phases: go into brill stage, drilling stage, go out the brill stage.Go into the requirement of brill stage and can guarantee that drill bit has very high centre of gyration degree, go into to bore smoothly; To guarantee that smooth chip breaking, chip removal, cooling fluid can be cooled off preferably, lubricated drill bit the drilling stage, improve bit life; It is little to go out brill stage requirement outlet burr, and drill thrust can not increase suddenly and cause drill bit to rupture.For this reason, must select different machined parameters at this three phases, machined parameters comprises: the speed of mainshaft, feed speed, drill vibration frequency, drill vibration amplitude.
In the present invention, set surface of the work to hole depth 0.5mm place for going into the brill stage, hole depth 0.5mm place is to being the stage in the drilling apart from workpiece bottom 0.5mm place, drill bit goes out the brill stage apart from workpiece bottom 0.5mm place; According to three drilling stages of dividing, require in following scope, to set respectively machined parameters in conjunction with workpiece material and bore process: vibration frequency (1～1000Hz), Oscillation Amplitude (1～10 μ m), the speed of mainshaft (0～27000rpm), feed speed (1～20 μ m/r).
When the variable element vibration micropore drilling technique that the present invention adopts can make the drilling micro hole, particularly when drilling difficult-to-machine material, composite, select different machined parameters in the different drilling stages, and the parameter range of choice is very wide, guaranteed that crudy simultaneously, has improved working (machining) efficiency.And variable element processing can make equipment of the present invention can obtain widely and use, and flexibility improves greatly.
It is that drill bit 11 produces axial vibration that the present invention adopts piezoelectric ceramics 7 exciting high speed and precision main shafts 8 vibrative modes, the advantage of this structure is that vibrating body is in light weight, starting of oscillation easily, and the excitor volume is little, power big, compact conformation, and the volume of entire equipment is reduced.
The present invention adopts the coaxial feed arrangement that makes, and advantage is that the entire equipment volume is little, simple and compact for structure, feeding is steady, equipment can be installed on any frame, and axis can improve equipment application flexibility and reliability greatly towards the optional position.
As shown in Figure 3, it is variable element vibration micropore drilling device drilling micro hole is drilled in the axial force aspect with common micropore comparison diagram, variable element vibration micropore drilling axial force reduces greatly as we can see from the figure, and change steadily, particularly go into to bore and go out the brill stage, in the stage that does not have axial force to raise suddenly, help improving bit life, reduce to export burr.Can see that by instantiation the present invention can effectively improve crudy and improve bit life by variable parameter vibration drilling.
Variable parameter vibration drilling micropore equipment of the present invention can be installed in it on shelf 15 of common bench drill, can replace common bench drill easily, realize variable element vibration micropore drilling device, and automaticity improves greatly.
For example: drill diameter is the hole of 0.5mm on No. 45 steel material, applies the AC drive voltage that frequency is 500～1000Hz, 600v by giving piezoelectric ceramics 7, the axial vibration that makes high speed and precision main shaft 8 produce 3～7 μ m amplitudes.Set the parameter (vibration frequency 500Hz, amplitude 7 μ m, rotating speed 23000r, feed speed 1 μ m/r) of going into to bore the stage respectively by controller 4, the parameter in drilling stage (vibration frequency 750Hz, amplitude 5 μ m, rotating speed 20000r, feed speed 2 μ m/r) and go out to bore the parameter (vibration frequency 1000Hz, amplitude 3 μ m, rotating speed 20000r, feed speed 0.5 μ m/r) in stage starts the drilling micropore then.The present invention can process the micropore that diameter is 0.1mm～2mm, and the micropore draw ratio can reach 20: 1, and bit life can improve more than 5～10, and cutting force can be more than the drop by half.
Equipment of the present invention has effectively improved processing conditions, has improved capillary processing quality and efficient, at the micro hole drilling of difficult-to-machine material, can effectively be solved especially, has improved automatization level and flexibility.
Claims (6)
1. the equipment of a variable parameter vibration drilling micropore, comprise controller, power supply, stepper motor, collet, outer sleeve (2), it is characterized in that: be provided with connection shaft coupling (12) in the outer sleeve (2), the leading screw of ball-screw (3) supports, the output shaft of stepper motor (1) is connected on the shaft coupling (12), the other end of shaft coupling (12) connects ball-screw (3), ball-screw (3), direct current high-speed electric expreess locomotive (6) is enclosed within spindle motor and supports in (13), spindle motor supports (13) and fuses by the same copper sheathing of pressing plate (14) (10), direct current high-speed electric expreess locomotive (6) is fixed on pressing plate (14) and goes up and connect power supply (5), be provided with piezoelectric ceramics (7) and spring (9) in the copper sheathing (10) of pressing plate (14) lower end, the output shaft of direct current high-speed electric expreess locomotive (6) connects high speed and precision main shaft (8), and collet (11) is fixed on drill bit on the high speed and precision main shaft (8).
2. the equipment of variable parameter vibration drilling micropore according to claim 1, it is characterized in that: stepper motor (1) output shaft drives ball-screw (3) by shaft coupling (12) and rotates, ball-screw (3) is converted into the rectilinear motion that spindle motor supports the axis direction of (13) with gyration, acting in conjunction by pressing plate (14) and spring (9), piezoelectric ceramics (7) is applied certain pretightning force, drive high speed and precision main shaft (8) and produce axial feed, for bit cutting provides axial feed.
3. the equipment of variable parameter vibration drilling micropore according to claim 1 is characterized in that: exciting source adopts piezoelectric ceramics (7) to produce 1～1000Hz low-frequency vibration and provides.
4. the equipment of variable parameter vibration drilling micropore according to claim 1 is characterized in that: the low-frequency vibration direct-drive high speed and precision main shaft (8) that piezoelectric ceramics (7) produces produces the response of 1～10 μ m amplitude.
5. the equipment of variable parameter vibration drilling micropore according to claim 1 is characterized in that: collet adopts precision spring chuck (11), has guaranteed to install the good drill bit rotating accuracy of drill bit.
6. drilling device according to claim 5, it is characterized in that: the axis feeding mode of coaxial-type, directly drive the mode of ball-screw (3) by stepper motor (1), drive high speed and precision main shaft (8), piezoelectric ceramics (7), together feeding of direct current high-speed electric expreess locomotive (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021586942A CN1190288C (en) | 2002-12-26 | 2002-12-26 | Method and equipment for drilling micro-holes with variable parameter vibration drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021586942A CN1190288C (en) | 2002-12-26 | 2002-12-26 | Method and equipment for drilling micro-holes with variable parameter vibration drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1418747A CN1418747A (en) | 2003-05-21 |
| CN1190288C true CN1190288C (en) | 2005-02-23 |
Family
ID=4753154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021586942A Expired - Fee Related CN1190288C (en) | 2002-12-26 | 2002-12-26 | Method and equipment for drilling micro-holes with variable parameter vibration drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1190288C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391379B (en) * | 2008-10-28 | 2010-06-02 | 北京航空航天大学 | Ultrasonic vibration taper shank capable of quickly centering |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408238C (en) * | 2005-08-02 | 2008-08-06 | 太原科技大学 | Low frequency axial vibration drilling technology and device thereof |
| JP2008006532A (en) * | 2006-06-29 | 2008-01-17 | Mitsubishi Heavy Ind Ltd | Deep hole drilling device |
| CN101745661B (en) * | 2008-12-02 | 2011-04-27 | 沈阳机床（集团）设计研究院有限公司 | Automatic drilling equipment for titanium alloy wall panel |
| DE102011077568B4 (en) * | 2011-06-15 | 2023-12-07 | Dmg Mori Ultrasonic Lasertec Gmbh | Machine tool, workpiece machining process |
| FR2984192B1 (en) * | 2011-12-16 | 2014-01-10 | Mitis | MACHINING PROCESS |
| CN102601679A (en) * | 2012-03-26 | 2012-07-25 | 侯马市东鑫机械铸造有限公司 | Speed-adjustable automatic-feeding numerical control device for sleeve of lathe tailstock |
| CN103774993B (en) * | 2014-03-02 | 2015-09-30 | 吉林大学 | A kind of piezoelectric ceramic type sonic drill |
| CN103949687B (en) * | 2014-04-03 | 2016-09-14 | 四川大学 | A kind of ultrasonic vibration drill turning device for large diameter hole overlaying processing |
| DE102015105338A1 (en) * | 2015-04-08 | 2016-10-27 | Lti Motion Gmbh | Tool drive with spindle shaft and operating method |
| CN106077755A (en) * | 2016-06-14 | 2016-11-09 | 北京航星机器制造有限公司 | A kind of micro hole stepping drill unit of controlled pitch-row |
| CN109108317B (en) * | 2017-06-23 | 2022-01-18 | 河南理工大学 | Composite vibration drilling method suitable for CFRP/titanium (aluminum) alloy laminated material |
| CN108672766B (en) * | 2018-04-16 | 2019-11-12 | 南京航空航天大学 | Portable vibration auxiliary bore hole device and method for drilling and processing signal detection method |
| CN108723428B (en) * | 2018-05-25 | 2020-05-05 | 南京航空航天大学 | Laminated material online variable parameter hole making method based on motor current |
| CN109014780A (en) * | 2018-08-03 | 2018-12-18 | 沈阳富创精密设备有限公司 | A kind of mechanical processing technique of bulb cross bore |
| CN109158652B (en) * | 2018-11-02 | 2023-09-01 | 河南理工大学 | Piezoelectric type micropore vibration drilling device |
| CN115091364B (en) * | 2022-06-22 | 2023-09-08 | 长春工业大学 | Piezoelectric axial vibration main shaft |
-
2002
- 2002-12-26 CN CNB021586942A patent/CN1190288C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391379B (en) * | 2008-10-28 | 2010-06-02 | 北京航空航天大学 | Ultrasonic vibration taper shank capable of quickly centering |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1418747A (en) | 2003-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1190288C (en) | Method and equipment for drilling micro-holes with variable parameter vibration drill | |
| US11260484B2 (en) | Tool drive having a spindle shaft and operating method | |
| KR101182040B1 (en) | Tool, electrodischarge electrode holder, and machine tool | |
| CN113814432B (en) | Rigidity and damping adjustable vibration attenuation boring bar and control method | |
| US20030102287A1 (en) | Tool, tool holder, and machine tool | |
| CN2855602Y (en) | Double head boring mill | |
| CN1796034A (en) | High-speed electric spark machine tool | |
| CN111805029B (en) | Workpiece vertical ultrasonic vibration device capable of lifting and rotating workpiece in wire cutting processing | |
| CN215545054U (en) | Drilling machine for quickly drilling side wall of oilless bearing | |
| CN107962394B (en) | Multifunctional drilling and tapping milling machine and operation method thereof | |
| CN207057655U (en) | A kind of elastic clamping drilling equipment | |
| CN2611087Y (en) | Electrospark taking screwtap machine tool | |
| CN107876813A (en) | A kind of double drilling machine | |
| CN208230891U (en) | It is a kind of to bore porous radial drilling machine simultaneously | |
| Kumar et al. | Design & fabrication of 360 flexible drilling machine | |
| CN211192931U (en) | Efficient mounting and dismounting device for drill bit assembly of full-automatic numerical control lathe | |
| CN221538156U (en) | Fine boring equipment for processing ductile iron cylinder sleeve | |
| CN214109121U (en) | Workpiece clamp for numerical control wire cut electrical discharge machine | |
| CN210615862U (en) | 168 power cover double-station precision boring special machine | |
| CN220971000U (en) | Portable electric pulse thread discharge machining equipment | |
| CN211803854U (en) | High-speed high-frequency precision lathe cutting module | |
| CN214236379U (en) | Double-end pipe numerical control high-speed drilling machine | |
| JP4153189B2 (en) | Tools, tool holders and machine tools | |
| CN216966950U (en) | Special boring machine for machining of cutting equipment and cutting equipment | |
| CN211218762U (en) | Bidirectional drilling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |