CN104439398A - Machining method for inclined small-diameter long hole - Google Patents
Machining method for inclined small-diameter long hole Download PDFInfo
- Publication number
- CN104439398A CN104439398A CN201410657972.8A CN201410657972A CN104439398A CN 104439398 A CN104439398 A CN 104439398A CN 201410657972 A CN201410657972 A CN 201410657972A CN 104439398 A CN104439398 A CN 104439398A
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- CN
- China
- Prior art keywords
- drill
- hole
- bushing body
- gun
- diameter
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/02—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
Abstract
The invention discloses a machining method for an inclined small-diameter long hole. The machining method is characterized by including the following steps that firstly, a gun drill system is arranged on a machine tool and achieves high-pressure cooling; the coaxiality of a main shaft and the center of a drill bushing body and circle run-out of the main shaft end of the gun drill system are adjusted; a certain include angle is formed between the center line of the drill bushing body and the axis of a workpiece; a sealing and cooling system is adjusted; the positions of points needing machining on the workpiece are determined through scribing; the distance between a tool bar shock absorber and the end face of the drill bushing body is adjusted, and is smaller than four times the diameter of a tool bit of a gun drill; the machining process is controlled. The inclined small-diameter long hole can be machined in high alloy structural steel or other materials difficult to machine, and it is avoided that selection of tools causes structure changing and increasing of the diameter of the hole, so that in the machining process, other parts inside the hole are damaged, and the durability of the tool is low. In addition, in order to guarantee the machining reliability, in the machining process, the tool edge grinding opportunity of the gun drill is controlled, after drill breaking, the method for drill taking and remachining is determined, and product quality is guaranteed.
Description
Technical field
The present invention relates to a kind of minor diameter (≤φ 2.75mm) method of plagioclase hole machined, belong to Deep-Hole Drilling Technology field.
Background technology
The parts processing minor diameter plagioclase hole are needed for some, for ensureing positioning precision, traditional processing method is processed at drilling hole machine tool, this bed piece is divided into A, B two parts, and A and B is angled, and its angle plagioclase hole is identical with central shaft angulation, part A is used for sectional fixture clamping parts and installs drill jig, part B installs main spindle box, operating grip equal power device, for ensureing axiality, and must design specialized drill bushing secondary process.Add drill jig size outside part, the tool dimension in processing slim hole is lengthened, cutter draw ratio increases (draw ratio is 48:1).Due to the little (≤φ 2.75mm in aperture) aspect ratio is large, without the drill bit of corresponding length being applicable to small diameter bore processing on fluted drill is selected.In order to reduce difficulty of processing, meet the requirement of working ability, traditional design structurally increases part---spacer shell cooperation reaches functional requirement, increase by little inclined hole diameter, the thread bush being contained small diameter bore by one is connected, adopt taper shank to lengthen fluted drill to process on lathe, and when little inclined hole diameter increases, be easy in process damage other position.In addition, because aperture is little, fluted drill material only can select high-speed steel, processing high alloy-structural steel material, and hole depth cutting fluid is difficult to enter, and heat radiation difficulty, drill bit is easy to wear.For the processing of elongated inclined hole, with fluted drill processing, drill bit is elongated, poor rigidity, and the precision in hole is seldom to ensure, center deviation gradient is comparatively large, and bring the easy phenomenon injuring other position in hole that produces in process and occur, quality is comparatively difficult to ensure card.
Summary of the invention
The object of the invention is the defect in order to overcome prior art, in order to solve the elongated inclined hole processing problems of high-strength alloy structural steel minor diameter, proposing a kind of processing method of minor diameter plagioclase hole.
Technical scheme of the present invention is: a kind of method of minor diameter plagioclase hole, is characterized in that: comprise the following steps:
1) first on lathe, configure drill gun system, realize high pressure cooling;
2) adjust the axiality at drill gun system spindle and drill bushing body center, spindle end circle is beated; The center line of drill bushing body and the axis of workpiece form an angle;
3) adjustment sealing and cooling system, controls drill gun with cold oil pressure in 2.5MPa-6.0MPa scope.
4) position of processing stand that needs on workpiece is determined by line.
5) adjust the distance of knife bar anti-rattler to drill bushing body end face, its distance is less than the tool bit diameter of four times of drill guns.
6) controlled working process: drill gun adopts experience rotating speed 2000-3000r/min in feed place, and the amount of feeding is 2.6-3.6mm/min; Go out cutter place rotating ratio empirical value 2000-3000r/min and reduce 200r/min, the amount of feeding is 2.6-3.6mm/min.
Beneficial effect: the method in minor diameter plagioclase hole of the present invention can solve problem of mating more difficult with gun steel when small diameter drill bit is selected, the processing of the difficult-to-machine material minor diameter inclined holes such as high alloy-structural steel can be realized, avoid because of cutting tool choice problem caused restructure, phenomenon that hole diameter enlargement and adding of causing occur injuring other position in hole man-hour and the low problem of tool life.In addition, be the reliability ensureing processing, control drill gun sharpening opportunity, to determine the method for getting brills, reprocessing after the breaking of rod, guarantee product quality in process.
Accompanying drawing explanation
Fig. 1 is the front view of the present invention's drill gun system;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the sealing system structure chart of Fig. 1;
Fig. 4 is work flow schematic diagram of the present invention.
1-digital display touch control screen, 2-servomotor, 3-electro spindle, 4-sealing system, 5-drill gun, 6-work piece, 7-drill bushing body, 8-support, 9-knife bar anti-rattler, 10-sealing and cooling system, 11-lathe bed, 12-guide rail, 13-lathe bed assistant support, 14-working-spindle, 15-positioning sleeve, 16-sleeve body, 17-taper pipe thread cover, 18-sleeve.
Detailed description of the invention
For making object of the present invention, content and advantage clearly, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
To process diameter for φ 2.5mm, axis becomes 25 ° with gun bore line, and the degree of depth is the plagioclase hole of 62mm is embodiment, and the method in minor diameter plagioclase hole of the present invention comprises the following steps:
1) first on lathe, configure drill gun system, realize high pressure cooling, drill gun system comprises servomotor 2, electro spindle 3, working-spindle 14, sealing and cooling system 10, φ 2.5mm drill gun 5, knife bar anti-rattler 9, drill bushing body 7; Sealing and cooling system 10 comprise positioning sleeve 15, sleeve body 16, taper pipe thread cover 17 and sleeve 18; Electro spindle 3 is arranged on guide rail 12, and servomotor 2 drives electro spindle 3 to do horizontal movement along guide rail; The sleeve 18 that working-spindle 14 front end overlaps 17 with center with taper pipe thread is threaded, and rear end is fixedly connected with electro spindle 3 with positioning sleeve 15 is rear through the sleeve body 16 with bearing successively, and working-spindle can rotate by relative sleeve body 16; Drill gun 5 is fixed in taper pipe thread cover 17, and knife bar anti-rattler 9 and drill bushing body 7 are fixed on lathe bed, is respectively used to the drilling rod and the drill bit that support drill gun 5.Guide rail 12 is fixed on the base plate of lathe bed assistant support 13, and lathe bed assistant support 13 is fixed on lathe bed, drives guide rail 12 to do vertical motion.
2) adjust the axiality at drill gun system electro spindle and drill bushing body center, control each within 0.04mm, the round 0.2mm that beats of spindle end; The center line of drill bushing body and the axis of workpiece form an angle;
3) adjustment sealing and cooling system, controls drill gun with cold oil pressure in 2.5MPa-6.0MPa scope.
4) position of processing stand that needs on workpiece is determined by line.
5) adjust the distance of knife bar anti-rattler to drill bushing body end face, its distance is less than the tool bit diameter of four times of drill guns.
6) controlled working process: the amount of feeding reduces 1mm/min than empirical value 3.6-4.6mm/min; Go out cutter place rotating ratio empirical value 2000-3000r/min and reduce 200r/min, the amount of feeding reduces 1mm/min than empirical value 3.6-4.6mm/min.The drill gun of the present embodiment adopts experience rotating speed 2500r/min in feed place, and the amount of feeding is 2.6mm/min, and after feed 10mm, the adjustment amount of feeding is 3.6mm/min; Going out cutter place rotating speed is 2300r/min, and the adjustment amount of feeding is 2.6mm/min.
7) method of drill gun breaking of rod post processing is determined:
A, after process generation breaking of rod situation, takes the electrode processing method of electric spark to carry out getting brill.
B gets drill-through journey above-mentioned, damages hole wall, the insulation articles application of wire electrode cylindrical for preventing wire electrode discharge.
C gets the hole after the breaking of rod, after also discharging borings completely, after proving that drill gun cutter head takes out completely, then continues processing by drill gun system with the fluted drill processing 2-3mm of corresponding size is dark.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (2)
1. the method in minor diameter plagioclase hole, is characterized in that: comprise the following steps:
1) first on lathe, configure drill gun system, realize high pressure cooling;
2) adjust the axiality at drill gun system spindle and drill bushing body center, spindle end circle is beated; The center line of drill bushing body and the axis of workpiece form an angle;
3) adjustment sealing and cooling system, controls drill gun with cold oil pressure in 2.5MPa-6.0MPa scope;
4) position of processing stand that needs on workpiece is determined by line;
5) adjust the distance of knife bar anti-rattler to drill bushing body end face, its distance is less than the tool bit diameter of four times of drill guns;
6) controlled working process: drill gun adopts experience rotating speed 2000-3000r/min in feed place, and the amount of feeding is 2.6-3.6mm/min; Go out cutter place rotating ratio empirical value 2000-3000r/min and reduce 200r/min, the amount of feeding is 2.6-3.6mm/min.
2. the method in a kind of minor diameter plagioclase hole according to claim 1, is characterized in that: also comprise the method determining the post processing of the drill gun breaking of rod, concrete steps are as follows:
A, after process generation breaking of rod situation, the electrode processing method of electric spark is taked to carry out getting brill;
B, getting drill-through journey above-mentioned, damaging hole wall, the insulation articles application of wire electrode cylindrical for preventing wire electrode discharge;
C, get the hole after the breaking of rod, dark and after discharging borings completely, after proving that drill gun cutter head takes out completely, then process with the continuation of drill gun system with the fluted drill processing 2-3mm of corresponding size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410657972.8A CN104439398A (en) | 2014-11-18 | 2014-11-18 | Machining method for inclined small-diameter long hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410657972.8A CN104439398A (en) | 2014-11-18 | 2014-11-18 | Machining method for inclined small-diameter long hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104439398A true CN104439398A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410657972.8A Pending CN104439398A (en) | 2014-11-18 | 2014-11-18 | Machining method for inclined small-diameter long hole |
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| Country | Link |
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| CN (1) | CN104439398A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57201112A (en) * | 1981-05-30 | 1982-12-09 | Kazuo Kamihira | Gun drill utilizing bta mode pressure head |
| CN2578026Y (en) * | 2002-11-26 | 2003-10-08 | 中国第二重型机械集团公司 | Minor-diameter longhole machining devices |
| CN200948508Y (en) * | 2006-09-25 | 2007-09-19 | 环球工业机械（东莞）有限公司 | Slide-pillow rotary deep hole drilling machine |
| CN201105348Y (en) * | 2007-11-22 | 2008-08-27 | 重庆长安汽车股份有限公司 | Electric spark tool removing metal work-piece deep-hole broken drill bit |
| US7771145B2 (en) * | 2007-03-01 | 2010-08-10 | Toshiba Kikai Kabushiki Kaisha | Method and apparatus for machining deep hole |
-
2014
- 2014-11-18 CN CN201410657972.8A patent/CN104439398A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57201112A (en) * | 1981-05-30 | 1982-12-09 | Kazuo Kamihira | Gun drill utilizing bta mode pressure head |
| CN2578026Y (en) * | 2002-11-26 | 2003-10-08 | 中国第二重型机械集团公司 | Minor-diameter longhole machining devices |
| CN200948508Y (en) * | 2006-09-25 | 2007-09-19 | 环球工业机械（东莞）有限公司 | Slide-pillow rotary deep hole drilling machine |
| US7771145B2 (en) * | 2007-03-01 | 2010-08-10 | Toshiba Kikai Kabushiki Kaisha | Method and apparatus for machining deep hole |
| CN201105348Y (en) * | 2007-11-22 | 2008-08-27 | 重庆长安汽车股份有限公司 | Electric spark tool removing metal work-piece deep-hole broken drill bit |
Non-Patent Citations (1)
| Title |
|---|
| 马德华: "枪钻技术在普通镗床深孔加工中的应用", 《中国高新技术企业》 * |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |
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