CN105312619A - Method for expanding water blocking hole without generating iron ring and hole expanding knife used by method - Google Patents
Method for expanding water blocking hole without generating iron ring and hole expanding knife used by method Download PDFInfo
- Publication number
- CN105312619A CN105312619A CN201510881950.4A CN201510881950A CN105312619A CN 105312619 A CN105312619 A CN 105312619A CN 201510881950 A CN201510881950 A CN 201510881950A CN 105312619 A CN105312619 A CN 105312619A
- Authority
- CN
- China
- Prior art keywords
- water blocking
- blocking hole
- hole
- cornish bit
- expanding
- 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.)
- Pending
Links
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/0018—Drills for enlarging a hole
-
- 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
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/20—Number of cutting edges
- B23B2251/207—Six cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/24—Overall form of drilling tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a method for expanding water blocking hole without generating an iron ring and a hole expanding knife used by the method. The method comprises the following steps: firstly, clamping an air cylinder cover on a machine tool hydraulic tool, ensuring that an air exhaust surface of the air cylinder cover faces outwards, and the water blocking hole of the air cylinder cover faces towards a manufacturer; carrying out hole expanding on the water blocking hole by use of a first hole expanding knife, reducing hole expanding depth for not thoroughly expanding the water blocking hole, and generating a step at a side, close to the inner cavity, of the water blocking hole of an air cylinder cover casting piece; continuously carrying out hole expanding on the water blocking hole by use of a second hole expanding knife, so that a step generated by the water blocking hole is chopped by radial cutting force of a chamfering blade of a chamfering part of the second hole expanding knife while the iron ring is not generated. According to the method, a second chamfering step hole-expanding knife is used to reduce a tool feeding rate and continuously carry out hole expanding, so that the generated step bears the radial cutting force of the chamfering blade, and can be chopped without generating the iron hoop.
Description
Technical field
The present invention relates to cylinder head manufacture field, particularly a kind of water blocking hole of expanding does not produce the method for iron hoop and the cornish bit of use thereof.
Background technology
As shown in Figure 1, in the processing and manufacturing process of engine cylinder cap, reprocess workpiece is porose, to expand aperture and to improve crudy, as the processing of cylinder head intake and exhaust face water blocking blank hole 11.
But when cylinder head water blocking hole is soon expanded logical, because reaming surplus is less, water blocking hole internal face is subject to band chamfering cornish bit axial cutting force and comes off with the form of large half-turn iron hoop 12 (as shown in Figure 2), iron hoop is poured cylinder cap water channel inner chamber by high-pressure cutting fluid, matting has fraction iron hoop to be cleared below, easily produces potential safety hazard.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
A kind of expansion water blocking hole of simple and reasonable steps is the object of the present invention is to provide not produce the method for iron hoop and the cornish bit of use thereof, the water blocking hole counterbore depth of first cornish bit in main program is changed the shallow water blocking hole that makes and expands obstructed and produce step in cylinder cap casting water blocking hole by lumen side by the method that this expansion water blocking hole does not produce iron hoop, and then reduce tool feeding rate continuation reaming with second chamfering counterboring with step core drill cutter, making the step produced be subject to chamfered cutting edge radial cutting force, can not be produced iron hoop by shredding.
For achieving the above object, according to an aspect of the present invention, provide and a kind ofly expand the method that water blocking hole does not produce iron hoop, comprise the following steps: first, by cylinder head clamping in machine tool hydraulic frock, and the deflation area ensureing cylinder head outwardly, the water blocking hole facing to manufacture person of cylinder head; Secondly, use the first cornish bit to carry out reaming to water blocking hole, counterbore depth is changed the shallow water blocking hole that makes and do not expand logical and produce step in cylinder cap casting water blocking hole by lumen side; Then, then continue reaming with the second cornish bit to water blocking hole, the radial cutting force that the step that water blocking hole is produced is subject to the chamfered cutting edge of the second cornish bit chamfered part can not be produced iron hoop by shredding.
Preferably, in technique scheme, the thickness of step is 2-3mm.
Preferably, in technique scheme, the feed speed that the second cornish bit continues reaming to water blocking hole is slower than the feed speed of described first cornish bit.
According to another aspect of the present invention, provide the second cornish bit that a kind of above-mentioned expansion water blocking hole does not produce the method use of iron hoop, it is characterized in that, described second cornish bit comprises: knife bar and knife edge part, wherein knife bar is milled with flat position, for being arranged on by this second cornish bit in the solid handle of a knife in side; Described knife edge part is the hierarchic structure that circumferential uniform multiple blades are formed, and the front end of described knife edge part has chamfered part, and the chamfered cutting edge radially projecting length of described chamfered part is greater than the thickness of described step.
Preferably, in technique scheme, the second cornish bit body is inner-cooling structure.
Preferably, in technique scheme, blade is circumferential uniform six.
Preferably, in technique scheme, the angle of chamfered part is 60 °.
Compared with prior art, the present invention has following beneficial effect: the water blocking hole counterbore depth of first cornish bit in main program is changed the shallow water blocking hole that makes and expands obstructed and produce step in cylinder cap casting water blocking hole by lumen side by the method that this expansion water blocking hole does not produce iron hoop, and then reduce tool feeding rate continuation reaming with second chamfering counterboring with step core drill cutter, making the step produced be subject to chamfered cutting edge radial cutting force, can not be produced iron hoop by shredding.
Accompanying drawing explanation
Fig. 1 is the structural representation of cylinder head.
Fig. 2 is the schematic diagram of the iron hoop that expansion water blocking hole of the present invention produces.
Fig. 3 is the schematic diagram that expansion water blocking hole of the present invention does not produce the cornish bit of the method use of iron hoop.
Fig. 4 is the cross-sectional schematic that expansion water blocking hole of the present invention does not produce the cornish bit of the method use of iron hoop.
Fig. 5 is the schematic diagram that expansion water blocking hole of the present invention does not produce the method for iron hoop.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of detailed description of the invention.
Clearly represent unless otherwise other, otherwise in whole description and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or part, and do not get rid of other element or other part.
As shown in Figures 1 to 5, the concrete steps not producing the method for iron hoop according to the expansion water blocking hole of the specific embodiment of the invention comprise:
First, by cylinder head 51 clamping in machine tool hydraulic frock, and the deflation area ensureing cylinder head 51 outwardly, water blocking hole 11 facing to manufacture person;
Secondly, use the first cornish bit to carry out reaming to water blocking hole 11, counterbore depth is changed the shallow water blocking hole that makes and do not expand logical and produce step 55 in cylinder cap casting water blocking hole by lumen side;
Be arranged on by first cornish bit in the solid handle of a knife in side, trip bolt tightens by certain moment, and cutter non-loosening tipping also can normally use.Then correct procedure is selected in production and processing conveniently, after selecting the cutting parameters such as suitable rotating speed, feeding, can carry out machining.With first cornish bit (conventional cornish bit) of process water plug-hole at ordinary times by original parameter reaming, time in reaming procedure, bottom outlet also has 2-3mm to expand logical, just water blocking hole black skin produces a bit of step 55 at this moment, the optimum thickness of this step 55 is when it just will rupture and also not rupture, stop the continuation feeding of cutter, cutter is exited fast from water blocking hole, swap-in tool magazine;
Then, then continue reaming with the second cornish bit 54, the radial cutting force making the step produced be subject to the chamfered cutting edge 53 of the second cornish bit chamfered part can not be produced iron hoop 21 by shredding.
Originally expansion water blocking hole has only used one cutter, and when Kong Kuaikuo leads to, cutter can produce an axial force to water blocking hole inwall, is extruded until rupture.In present new departure, process water plug-hole needs two cornish bits, and one being cornish bit originally used, also has one the novel cornish bit being design, i.e. the second cornish bit 24.
This second cornish bit 54 is inner-cooling structure, comprising: knife bar 35 and knife edge part 31.Wherein knife bar 35 is milled with flat position 34, for being arranged on by this second cornish bit in the solid handle of a knife in side.Described knife edge part 31 is the hierarchic structure that six circumferential uniform blades 42 are formed, and the front end of described knife edge part 31 has chamfered part 53.
In order to the radial cutting force making the step produced be subject to the chamfered cutting edge of the second cornish bit chamfered part can not be produced iron hoop by shredding, the chamfered cutting edge radially projecting length of this chamfered part 53 is greater than the thickness of step 55.Preferably, the angle of chamfered part 53 is 60 °.After the chamfered cutting edge of the second cornish bit chamfered part processes step 55, its end face does not produce with water channel internal face interferes.
During use, second cornish bit 54 is arranged in the solid handle of a knife in side, the solid tool sharpening process stabilization in side, handle of a knife trip bolt is tightened successively by certain moment, after determining that cornish bit clamps completely, is placed on and surveys that cutter cutter measured by cutter instrument is long, if procedure controls by cutter second-order cutter is long, so be necessary other cutter long datas measuring cornish bit, after all preparation is ready to complete, just can carry out debugging processing by broad to lathe.In process, cutter may because of machining condition etc. reason need adjustment until process qualified.
Swap out after this novel cornish bit (the second cornish bit 54), the cutting parameter before reduction, particularly feed speed must be slow, the effect of cutter chamfered cutting edge part could be performed to the best like this.First cornish bit before the bottom outlet processed one section can fast feed a little, when chamfered part soon encounters boss, just reduce rotating speed and feeding, cutter moves forward, when touching boss, blade cuts and starts, because feed speed is slow, and the angle of chamfered part is one little cutter compared with upper, the cutting force of an axis can be produced to bottom outlet before cutter, and most axial force is converted into the radial load of cornish bit by present little chamfering, therefore axial force reduces, boss can not come off, low feeding tool slowly moves forward, the cut much broken iron filings of boss, to the last 1 boss has been cut, then cornish bit withdrawn fast and gain tool magazine, the reaming processing in whole water blocking hole just completes.
To sum up, the water blocking hole counterbore depth of first cornish bit in main program is changed the shallow water blocking hole that makes and expands obstructed and produce step in cylinder cap casting water blocking hole by lumen side by the method that this expansion water blocking hole does not produce iron hoop, and then reduce tool feeding rate continuation reaming with second chamfering counterboring with step core drill cutter, making the step produced be subject to chamfered cutting edge radial cutting force, can not be produced iron hoop by shredding.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (7)
1. expand the method that water blocking hole does not produce iron hoop, it is characterized in that, comprise the following steps:
First, by cylinder head clamping in machine tool hydraulic frock, and the deflation area ensureing cylinder head outwardly, the water blocking hole facing to manufacture person of cylinder head;
Secondly, use the first cornish bit to carry out reaming to water blocking hole, counterbore depth is changed the shallow water blocking hole that makes and do not expand logical and produce step in cylinder cap casting water blocking hole by lumen side;
Then, then continue reaming with the second cornish bit to water blocking hole, the radial cutting force that the step that water blocking hole is produced is subject to the chamfered cutting edge of the second cornish bit chamfered part can not be produced iron hoop by shredding.
2. expansion water blocking hole according to claim 1 does not produce the method for iron hoop, it is characterized in that, the thickness of described step is 2-3mm.
3. expansion water blocking hole according to claim 1 does not produce the method for iron hoop, it is characterized in that, the feed speed that described second cornish bit continues reaming to water blocking hole is slower than the feed speed of described first cornish bit.
4. the second cornish bit that the method that an expansion water blocking hole according to any one of claim 1 to 3 does not produce iron hoop uses, it is characterized in that, described second cornish bit comprises: knife bar and knife edge part, and wherein knife bar is milled with flat position, for being arranged on by this second cornish bit in the solid handle of a knife in side; Described knife edge part is the hierarchic structure that circumferential uniform multiple blades are formed, and the front end of described knife edge part has chamfered part, and the chamfered cutting edge radially projecting length of described chamfered part is greater than the thickness of described step.
5. the second cornish bit according to claim 4, is characterized in that, described second cornish bit is inner-cooling structure.
6. the second cornish bit according to claim 4, is characterized in that, described blade is circumferential uniform six.
7. the second cornish bit according to claim 4, is characterized in that, the angle of described chamfered part is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881950.4A CN105312619A (en) | 2015-12-04 | 2015-12-04 | Method for expanding water blocking hole without generating iron ring and hole expanding knife used by method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881950.4A CN105312619A (en) | 2015-12-04 | 2015-12-04 | Method for expanding water blocking hole without generating iron ring and hole expanding knife used by method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105312619A true CN105312619A (en) | 2016-02-10 |
Family
ID=55241484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510881950.4A Pending CN105312619A (en) | 2015-12-04 | 2015-12-04 | Method for expanding water blocking hole without generating iron ring and hole expanding knife used by method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105312619A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939542A (en) * | 2017-12-04 | 2018-04-20 | 杨程日 | Cylinder cover of automobile engine water blocking bottom hole portion's preprocessing structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03264205A (en) * | 1990-03-15 | 1991-11-25 | Kubota Corp | Boring tool of internal face resin lining material |
| CN202147038U (en) * | 2011-06-24 | 2012-02-22 | 安徽金达利液压有限公司 | Expanding drill for valve port |
| CN102601421A (en) * | 2012-03-07 | 2012-07-25 | 陈硕 | Cylinder head guide column drilling rectifying tool and application method |
| CN204504299U (en) * | 2014-07-08 | 2015-07-29 | 淮安市三联液压科技有限公司 | A kind of drill bit for valve opening reaming |
| CN205183875U (en) * | 2015-12-04 | 2016-04-27 | 广西玉柴机器股份有限公司 | Expand cornish bit that water blocking hole did not produce method use of hoop |
-
2015
- 2015-12-04 CN CN201510881950.4A patent/CN105312619A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03264205A (en) * | 1990-03-15 | 1991-11-25 | Kubota Corp | Boring tool of internal face resin lining material |
| CN202147038U (en) * | 2011-06-24 | 2012-02-22 | 安徽金达利液压有限公司 | Expanding drill for valve port |
| CN102601421A (en) * | 2012-03-07 | 2012-07-25 | 陈硕 | Cylinder head guide column drilling rectifying tool and application method |
| CN204504299U (en) * | 2014-07-08 | 2015-07-29 | 淮安市三联液压科技有限公司 | A kind of drill bit for valve opening reaming |
| CN205183875U (en) * | 2015-12-04 | 2016-04-27 | 广西玉柴机器股份有限公司 | Expand cornish bit that water blocking hole did not produce method use of hoop |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939542A (en) * | 2017-12-04 | 2018-04-20 | 杨程日 | Cylinder cover of automobile engine water blocking bottom hole portion's preprocessing structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103231074B (en) | Machining method of inner circle and outer circle of elastic ring provided with opening and made of high temperature alloy | |
| CN104400008B (en) | A kind of numerical-control processing method in the deep chamber of ring of obturaging | |
| CN103586636B (en) | The processing method of spout and the processing unit (plant) of spout | |
| CN106271423B (en) | A kind of processing method of alloy type thin walled welds washer | |
| CN109500459B (en) | Method for machining nickel-based high-temperature alloy ultra-deep hole valve seat of aerospace engine | |
| CN104148894A (en) | Machining method of thin-walled deep-hole welded workpieces | |
| CN108687388B (en) | Machining method for numerical control milling of small-corner deep-wall cavity in high-temperature alloy material | |
| CN107971540B (en) | A kind of processing method avoiding cutter interference | |
| CN205183875U (en) | Expand cornish bit that water blocking hole did not produce method use of hoop | |
| CN105312619A (en) | Method for expanding water blocking hole without generating iron ring and hole expanding knife used by method | |
| CN104551151A (en) | Circular ring slotting cutter | |
| CN104772604A (en) | Processing method of steam nozzle on steam injection coverplate of steam turbine | |
| CN105945520B (en) | A kind of cross holes thin wall special-shaped inner hole of cylinder processing method | |
| CN205254205U (en) | Modular end face seal groove milling cutter | |
| CN107020486A (en) | A kind of processing method of welded type lengthened reamer | |
| CN106239036A (en) | A kind of preparation technology of sheet porous structural single crystal super alloy part | |
| CN206966675U (en) | A kind of once-forming cutter for the cutting of deep bore hole | |
| CN203578796U (en) | Internal and external chamfer mill | |
| CN206425567U (en) | A kind of process tool of big depth-to-width ratio groove | |
| CN105458384B (en) | The method of digital-control boring-milling machine planing operation narrow slot | |
| CN204954052U (en) | Special reamer | |
| CN209288299U (en) | A kind of processing nylon thin-wall part gang tool | |
| CN110899782B (en) | Machining method for self-adaptive milling of external surface of split case | |
| CN103949858B (en) | A kind of power station steam turbine packing segmental arc processing method | |
| CN107755978B (en) | A kind of quick processing method of the middle-size and small-size annular element of aero-engine and its inner hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160210 |
|
| RJ01 | Rejection of invention patent application after publication |