CN105215436A - A kind of brill milling compound tool of deep hole machining and the method using it to process - Google Patents
A kind of brill milling compound tool of deep hole machining and the method using it to process Download PDFInfo
- Publication number
- CN105215436A CN105215436A CN201510598413.9A CN201510598413A CN105215436A CN 105215436 A CN105215436 A CN 105215436A CN 201510598413 A CN201510598413 A CN 201510598413A CN 105215436 A CN105215436 A CN 105215436A
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- China
- Prior art keywords
- knife bar
- deep hole
- compound tool
- hole
- cutter head
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Classifications
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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
- B23B51/08—Drills combined with tool parts or tools for performing additional working
-
- 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
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/02—Milling surfaces of revolution
-
- 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)
- Drilling And Boring (AREA)
Abstract
The brill milling compound tool that the invention discloses a kind of deep hole machining and the method using it to process.The brill milling compound tool of this deep hole machining and the method using it to process, be provided with pilot bit and some cutter blades at the end face of cutter head, make drilling and milling combine, and drilling and milling can be completed in same operation, vertical machine adds deep hole steady quality, improves working (machining) efficiency; Cutter head is provided with disconnectable outer cutter holder, and make it possible to change or the outer cutter holder of processing according to processing diameter range, applied range, it is low that machine adds cost.The present invention is applicable to nuclear equipment process tool field.
Description
Technical field
The present invention relates to nuclear equipment process tool field, the brill milling compound tool particularly relating to a kind of deep hole machining and the method using it to process.
Background technology
At present, for the top cover of AP1000 reactor pressure vessel, normally foreign acquisition top cover forging finished product is processed, usual needs process φ 140mm on top cover flange, the through hole of L=700mm, its aperture ratio reaches 5 ︰ 1, belongs to large diameter deep hole machining.Due to the restriction of top cover supplied materials shape, cannot directly then process its hoisting and overturning, can only be holed to top cover flange vertically downward by main shaft, difficulty is very large.Because it is large that machine adds cutting output and cutting force, cutter is easily trembled, can only chip removal vertically upward, very difficult.And top cover needs weld interim annex, top cover lifting, upset could be realized.A kind of mode is also had to be the processing performing this pores in forging raw material producer, its processing technology is adopt vertical car to divide two stages to complete the processing in entire depth hole, first clamping drill bit on vertical milling spindle, pre-drilling aperture, then adopts milling or boring mode to carry out reaming to the internal diameter size required; Again top cover is overturn 180 ° (raw material stage top cover has and stands up hanger temporarily), finally adopt identical processing technology to process second half degree of depth hole of top cover flange.Mechanical processing technique process is comparatively complicated, and efficiency is low.
Summary of the invention
For solving the problem, the invention provides and a kind of the brill milling compound tool being incorporated in the deep hole machining completed in same operation and the method using it to process be tied in drilling and milling.
The technical solution adopted for the present invention to solve the technical problems is:
A brill milling compound tool for deep hole machining, the cutter head comprising handle of a knife and arrange on handle of a knife, the end face center of cutter head is provided with pilot bit, and the end face of cutter head is also provided with some cutter blades, and cutter head is provided with disconnectable outer cutter holder.
Be further used as the improvement of technical solution of the present invention, outer cutter holder is arranged on cutter head side, and the external diameter of outer cutter holder can be regulated by grinding.
Be further used as the improvement of technical solution of the present invention, be provided with at least one short circuit knife bar between handle of a knife and cutter head and/or at least one longly connects knife bar.
Be further used as the improvement of technical solution of the present invention, be provided with in handle of a knife, pilot bit, cutter head, outer cutter holder, short circuit knife bar and the long inside connecing knife bar the cooling passage communicated with each other.
Be further used as the improvement of technical solution of the present invention, pilot bit and/or outer cutter holder are provided with some cooling liquid outlets.
The method using the brill milling compound tool of deep hole machining to process, comprises the following steps:
A, select to meet the lathe of power, the interior cold pressure of setting internal cooling system, setting machine tool feed rate, according to the depth-set speed of mainshaft of machining hole;
B, on the top cover flange of reactor pressure vessel, bore large through-hole, cooling fluid in simultaneously machining hole being injected, completion of processing;
C, take off outer cutter holder, the outer cutter holder of grinding, to after surveying adapter base hole size, is assembled to cutter head;
The heap of d, processing top cover of reactor pressure vessel surveys adapter base endoporus.
Be further used as the improvement of technical solution of the present invention, in step a, select access short circuit knife bar and/or length to connect knife bar according to the machining hole degree of depth.
Be further used as the improvement of technical solution of the present invention, in step a, when processing hole depth is 300mm ~ 400mm, access short circuit knife bar, setting speed is 220rpm ~ 300rpm; When processing hole depth is 600mm ~ 700mm, access is long connects knife bar, and setting speed is 220rpm ~ 250rpm; When processing hole depth is 800mm ~ 900mm, access short circuit knife bar simultaneously and connect knife bar with long, setting speed is 220rpm ~ 250rpm, and iron filings discharge continuous band shape.
Be further used as the improvement of technical solution of the present invention, in step a, when replacing short circuit knife bar and/or length connect knife bar, accurately after the pilot bit of location, then continue processing.
Be further used as the improvement of technical solution of the present invention, in step b and steps d, carry out cooling fluid cooling to institute's machining hole, coolant pressure is 20bar.
Beneficial effect of the present invention: the brill milling compound tool of this deep hole machining and the method using it to process, pilot bit and some cutter blades is provided with at the end face of cutter head, drilling and milling is made to combine, and drilling and milling can be completed in same operation, vertical machine adds deep hole steady quality, improves working (machining) efficiency; Cutter head is provided with disconnectable outer cutter holder, and make it possible to change or the outer cutter holder of processing according to processing diameter range, applied range, it is low that machine adds cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is embodiment of the present invention overall structure schematic diagram;
Fig. 2 is cutter head top view of the present invention.
Detailed description of the invention
With reference to Fig. 1, Fig. 2, the present invention is a kind of brill milling compound tool of deep hole machining, the cutter head 2 comprising handle of a knife 1 and arrange on handle of a knife 1, and the end face center of cutter head 2 is provided with pilot bit 6, the end face of cutter head 2 is also provided with some cutter blades 7, and cutter head 2 is provided with disconnectable outer cutter holder 21.
The brill milling compound tool of this deep hole machining and the method using it to process, be provided with pilot bit 6 and some cutter blades 7 at the end face of cutter head 2, make drilling and milling combine, and drilling and milling can be completed in same operation, vertical machine adds deep hole steady quality, improves working (machining) efficiency; Cutter head 2 is provided with disconnectable outer cutter holder 21, and make it possible to change or the outer cutter holder 21 of processing according to processing diameter range, applied range, it is low that machine adds cost.
As the preferred embodiment of the present invention, outer cutter holder 21 is arranged on cutter head 2 side, and the external diameter of outer cutter holder 21 can be regulated by grinding.
As the preferred embodiment of the present invention, be provided with at least one short circuit knife bar 4 between handle of a knife 1 and cutter head 2 and/or at least one longly connects knife bar 3.
As the preferred embodiment of the present invention, be provided with in handle of a knife 1, pilot bit 6, cutter head 2, outer cutter holder 21, short circuit knife bar 4 and the long inside connecing knife bar 3 cooling passage 5 communicated with each other.
As the preferred embodiment of the present invention, pilot bit 6 and/or outer cutter holder 21 are provided with some cooling liquid outlets 51.
The method using the brill milling compound tool of deep hole machining to process, comprises the following steps:
A, select to meet the lathe of power, the interior cold pressure of setting internal cooling system, setting machine tool feed rate, according to the depth-set speed of mainshaft of machining hole;
B, on the top cover flange of reactor pressure vessel, bore large through-hole, cooling fluid in simultaneously machining hole being injected, completion of processing;
C, take off outer cutter holder 21, after the outer cutter holder 21 of grinding to survey adapter base hole size, be assembled to cutter head 2;
The heap of d, processing top cover of reactor pressure vessel surveys adapter base endoporus.
As the preferred embodiment of the present invention, in step a, access short circuit knife bar 4 and/or length is selected to connect knife bar 3 according to the machining hole degree of depth.
As the preferred embodiment of the present invention, in step a, when processing hole depth is 300mm ~ 400mm, access short circuit knife bar 4, setting speed is 220rpm ~ 300rpm; When processing hole depth is 600mm ~ 700mm, access is long connects knife bar 3, and setting speed is 220rpm ~ 250rpm; When processing hole depth is 800mm ~ 900mm, access short circuit knife bar 4 simultaneously and connect knife bar 3 with long, setting speed is 220rpm ~ 250rpm.
Above setting parameter all can make to add iron filings discharge in man-hour continuous band shape, realizes iron filings in whole process and constantly discharges outward.
As the preferred embodiment of the present invention, in step a, when replacing short circuit knife bar 4 and/or length connect knife bar 3, accurately after the pilot bit 6 of location, then continue processing.
As the preferred embodiment of the present invention, in step b and steps d, carry out cooling fluid cooling to institute's machining hole, coolant pressure is 20bar.
The present invention is applied to AP1000 reactor pressure vessel (being called for short RPV) top cover kingbolt through-hole machine processing, heap surveys the machined of adapter base endoporus, uniform 45 the φ 140mm through holes in AP1000 top cover flange border, 8 heaps survey adapter base, add the prerequisite of quality at the machine of guarantee under, pilot bit 6 and some cutter blades 7 is provided with at the end face of cutter head 2, drilling and milling are completed in same procedure, such working (machining) efficiency will improve greatly.Whole top cover needs the position of machining hole very many, on flange, the aperture of machining hole is φ 140mm, the degree of depth of through hole is about L=700mm, heap surveys adapter base needs the aperture of processing to be φ 132mm, the degree of depth of endoporus is about L=625mm, all relatively, if adopt same cutter can meet both processing, its manufacturing cost will reduce greatly for these two hole hole size and hole depth.
This bore milling compound tool can realize holing and milling as follows with the primary structure adding function opportunity: there is a pilot bit 6 of feeling relieved in cutter head 2 centre, the special adjective-centre structure on pilot bit 6 surface, can ensure to add in process at machine to ensure better location always, prevent hole machined process axis from departing from, there is the cutter blade 7 of milling both sides; If need drilling different-diameter endoporus, only need change the outer cutter holder 21 of different length that decision machine adds diameter of bore size, the effective length of outer cutter holder 21 can be regulated by grinding, and is fixed by screws on cutter head 2, just can realize processing the adjustable function of endoporus scope; Knife bar 3 is connect by the short circuit knife bar 4 and length of matching different length, when realizing processing different depth hole, the most rational knife bar length.
Add man-hour, the machine power being added right-angle milling head by theory calculate import φ 260mm horizontal boring and milling machine can meet this large diameter hole process requirements; Internal cooling system (interior cold pressure 20bar) on boring and milling machine, is ejected into work surface by the cooling passage 5 bored in milling compound tool and fully cools, reduce the wearing and tearing to point of a knife.To the theory analysis of machining state, there are two kinds of situations, if the first axially bored line level to be processed, the iron filings of disconnected broken shape can be gone out by liquid cold in lathe high pressure, thus ensure that hole machined carries out smoothly; If the second axially bored line to be processed is vertical, be difficult to by liquid cold in lathe high pressure the iron filings going out disconnected broken shape, the iron filings finally overstock in hole will stop vertical machining hole.Therefore, when axially bored line to be processed is vertical, the iron filings boring milling must be made to be in continuous band-shaped, just can by the mode tap surface of new iron filings by squeezing constantly produced, when the continuous iron filings with main shaft High Rotation Speed can cause fracture because of weight and centrifugal force eventually, finally realize iron filings in whole process and constantly discharge outward.
By test of many times, finally find out satisfactory mechanical processing technique parameter, see the following form 1, iron filings can be realized and slowly discharge vertically upward.
Final machine adds clear size of opening check result: hole dimension is φ 140.6mm, and the linearity in hole is≤0.1mm; Meet technological requirement.
Be successfully applied to the processing of top cover flange kingbolt φ 140mm through hole by this cover cutter and mechanical processing technique parameter, crudy is stablized, and efficiency is high; When the length of the outer cutter holder 21 of grinding, ressemble on this cover cutter, adopt identical mechanical processing technique parameter, under the prerequisite substantially not increasing the cost of charp tool, realize the processing of heap being surveyed to adapter base φ 132mm endoporus.
This technology is applied to AP1000 reactor pressure vessel (be called for short RPV) top cover kingbolt through-hole machine and adds, pile survey adapter base endoporus machine and add.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (10)
1. the brill milling compound tool of a deep hole machining, it is characterized in that: comprise handle of a knife (1) and the cutter head (2) in the upper setting of described handle of a knife (1), the end face center of described cutter head (2) is provided with pilot bit (6), the end face of described cutter head (2) is also provided with some cutter blades (7), and described cutter head (2) is provided with disconnectable outer cutter holder (21).
2. the brill milling compound tool of deep hole machining according to claim 1, is characterized in that: described outer cutter holder (21) is arranged on cutter head (2) side, and the external diameter of described outer cutter holder (21) can be regulated by grinding.
3. the brill milling compound tool of deep hole machining according to claim 1 and 2, is characterized in that: be provided with at least one short circuit knife bar (4) between described handle of a knife (1) and cutter head (2) and/or at least one longly connects knife bar (3).
4. the brill milling compound tool of deep hole machining according to claim 3, is characterized in that: be provided with in described handle of a knife (1), pilot bit (6), cutter head (2), outer cutter holder (21), short circuit knife bar (4) and the long inside connecing knife bar (3) cooling passage (5) communicated with each other.
5. the brill milling compound tool of deep hole machining according to claim 4, is characterized in that: described pilot bit (6) and/or outer cutter holder (21) are provided with some cooling liquid outlets (51).
6. use a method for the brill milling compound tool processing of deep hole machining according to claim 1, it is characterized in that, comprise the following steps:
A, select to meet the lathe of power, the interior cold pressure of setting internal cooling system, setting machine tool feed rate, according to the depth-set speed of mainshaft of machining hole;
B, on the top cover flange of reactor pressure vessel, bore large through-hole, cooling fluid in simultaneously machining hole being injected, completion of processing;
C, take off outer cutter holder (21), the outer cutter holder (21) of grinding, to after surveying adapter base hole size, is assembled to cutter head (2);
The heap of d, processing top cover of reactor pressure vessel surveys adapter base endoporus.
7. the brill milling compound tool of deep hole machining according to claim 6, is characterized in that: in described step a, selects access short circuit knife bar (4) and/or length to connect knife bar (3) according to the machining hole degree of depth.
8. the brill milling compound tool of deep hole machining according to claim 7, is characterized in that: in described step a, when processing hole depth is 300mm ~ 400mm, and access short circuit knife bar (4), setting speed is 220rpm ~ 300rpm; When processing hole depth is 600mm ~ 700mm, access is long connects knife bar (3), and setting speed is 220rpm ~ 250rpm; When processing hole depth is 800mm ~ 900mm, access short circuit knife bar (4) simultaneously and length connect knife bar (3), and setting speed is 220rpm ~ 250rpm, and iron filings discharge continuous band shape.
9. the brill milling compound tool of deep hole machining according to claim 6, is characterized in that: in described step a, when replacing short circuit knife bar (4) and/or length connect knife bar (3), after accurately locating pilot bit (6), then continues processing.
10. the brill milling compound tool of deep hole machining according to claim 6, is characterized in that: in described step b and steps d, carry out cooling fluid cooling to institute's machining hole, coolant pressure is 20bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510598413.9A CN105215436A (en) | 2015-09-17 | 2015-09-17 | A kind of brill milling compound tool of deep hole machining and the method using it to process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510598413.9A CN105215436A (en) | 2015-09-17 | 2015-09-17 | A kind of brill milling compound tool of deep hole machining and the method using it to process |
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| Publication Number | Publication Date |
|---|---|
| CN105215436A true CN105215436A (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510598413.9A Pending CN105215436A (en) | 2015-09-17 | 2015-09-17 | A kind of brill milling compound tool of deep hole machining and the method using it to process |
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| CN (1) | CN105215436A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482950A (en) * | 2018-11-13 | 2019-03-19 | 北京星航机电装备有限公司 | A kind of inner wing class formation machining accuracy deep hole cutter and processing method |
| CN114952212A (en) * | 2022-07-06 | 2022-08-30 | 上海中船三井造船柴油机有限公司 | Method for machining connecting rod waist-shaped hole of marine diesel engine |
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| CN203281949U (en) * | 2013-06-04 | 2013-11-13 | 朱阿冻 | Drilling and milling cutter |
| CN103909287A (en) * | 2014-01-10 | 2014-07-09 | 宁波市荣科迈特数控刀具有限公司 | Combined large hole and deep hole drill |
| CN104302430A (en) * | 2012-03-16 | 2015-01-21 | 奥迪股份公司 | Method and tool for producing exact-fit cylindrical bore by removal of material from existing bore with finishing allowance |
| CN204248043U (en) * | 2014-11-14 | 2015-04-08 | 长葛市瑞昌机械有限公司 | A kind of comprehensive one cutter head |
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2015
- 2015-09-17 CN CN201510598413.9A patent/CN105215436A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104302430A (en) * | 2012-03-16 | 2015-01-21 | 奥迪股份公司 | Method and tool for producing exact-fit cylindrical bore by removal of material from existing bore with finishing allowance |
| CN203281949U (en) * | 2013-06-04 | 2013-11-13 | 朱阿冻 | Drilling and milling cutter |
| CN103909287A (en) * | 2014-01-10 | 2014-07-09 | 宁波市荣科迈特数控刀具有限公司 | Combined large hole and deep hole drill |
| CN204248043U (en) * | 2014-11-14 | 2015-04-08 | 长葛市瑞昌机械有限公司 | A kind of comprehensive one cutter head |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482950A (en) * | 2018-11-13 | 2019-03-19 | 北京星航机电装备有限公司 | A kind of inner wing class formation machining accuracy deep hole cutter and processing method |
| CN114952212A (en) * | 2022-07-06 | 2022-08-30 | 上海中船三井造船柴油机有限公司 | Method for machining connecting rod waist-shaped hole of marine diesel engine |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160106 |
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