CN101569984A - Method for processing stepped nonlinear spiral groove of 16PA6 injection pump plunger - Google Patents
Method for processing stepped nonlinear spiral groove of 16PA6 injection pump plunger Download PDFInfo
- Publication number
- CN101569984A CN101569984A CNA2009100527343A CN200910052734A CN101569984A CN 101569984 A CN101569984 A CN 101569984A CN A2009100527343 A CNA2009100527343 A CN A2009100527343A CN 200910052734 A CN200910052734 A CN 200910052734A CN 101569984 A CN101569984 A CN 101569984A
- Authority
- CN
- China
- Prior art keywords
- injection pump
- spiral groove
- processing
- pump plunger
- plunger
- 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
Images
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to a method for processing a stepped nonlinear spiral groove of a 16PA6 injection pump plunger, which is characterized by comprising the following steps: (1), roughly processing the spiral groove on the 16PA6 injection pump plunger by a numerical control milling machine and reserving the working allowance of 0.05mm; (2), performing heat treatment to make the hardness of the spiral groove reach HRC58-62; (3), finely processing the spiral groove on the 16PA6 injection pump plunger to the required size by a numerical control grinder; and (4), grinding an excircle with phi 23mm by the numerical control grinder, and controlling the depth of the spiral groove of the plunger between 0.99 and 1.01mm. The processing method changes the phenomenon of poor precision and smooth finish because the prior numerical control milling machine directly processes the spiral groove, simultaneously eliminates the little deformation influence of quenching on the spiral groove of the plunger, and improves the efficiency of subsequent assembly work and oil tests.
Description
Technical field
The present invention relates to the injection pump of marine diesel, particularly relate to the method for processing 16PA6 injection pump plunger stepped nonlinear spiral groove.
Background technology
Before the test run of assembling host platform, generally on the special-purpose testing stand of injection pump, carry out the oil mass test, after the assembling of 16PA6 injection pump with the fuel delivery of test and adjustment injection pump.Wherein, plunger is one of critical piece of control injection pump fuel delivery, its shape is roughly Φ 23mm * 174mm cylindrical component, plunger head has all very high helicla flute of 2 technology and dimensional requirement, as depicted in figs. 1 and 2, Fig. 1 is that the head of 16PA6 injection pump plunger launches schematic diagram, and Fig. 2 is that the c-c of stepped nonlinear spiral groove among Fig. 1 is to view.Its crudy comprises that detailed problems such as fineness all directly influence the fuel delivery of injection pump.For guaranteeing the plunger helix precision, after best processing method is plunger heat treatment, improve precision by grinding, but this structure spiral fluted equipment of suitable grinding is not found in the position so far.
The main process of existing injection pump plunger is: CNC milling machine (processing helicla flute by drawing) → heat treatment (quenching HRC58-62) → grinding machine (the mill Φ 23 cylindricals control helical pitch degree of depth 0.1 ± 0.01 degree of depth).With this processing technology scheme, there is following deficiency:
1. the helicla flute that processes of CNC milling machine, its surface smoothness is not fine, precision is subjected to certain influence.
2. behind the CNC milling machine processing plunger helix, through road heat treatment later, may there be micro-deformation in helicla flute, influenced the control of fuel delivery, can only carry out one by one injection pump being adjusted in the oil mass process of the test at testing stand, thereby greatly reduce operating efficiency.
3. plunger matching parts (parts that plunger and part sleeve are formed) interchangeability deficiency, if injection pump will be changed the plunger matching parts spare part, consider that there is very big influence in its gap to the fuel delivery per cycle and the expulsion pressure of injection pump, need again the injection pump after changing to be carried out the oil mass test, but do not possess the condition of test again in some cases.
Summary of the invention
The objective of the invention is to overcome the deficiency that above-mentioned prior art exists, a kind of new method of the 16PA6 of processing injection pump plunger stepped nonlinear spiral groove is provided.Utilize the plunger helix of method processing injection pump of the present invention to adjust processing technology, and process equipment improved, the precision and the fineness of the plunger helix of injection pump have been improved, reduce the loaded down with trivial details process of adjusting repeatedly in the oil mass process of the test, guarantee uniformity, stability and the interchangeability of plunger.
In order to reach the foregoing invention purpose, the invention provides following technical scheme:
A kind of method of processing 16PA6 injection pump plunger stepped nonlinear spiral groove is characterized in that this method comprises the steps:
1. utilize the helicla flute on the CNC milling machine roughing 16PA6 injection pump plunger, and leave the allowance of 0.05mm;
2. roughing 16PA6 injection pump plunger being heat-treated, specifically is to adopt the means of quenching to make its hardness reach HRC58～62;
3. adopt helicla flute on the numerically control grinder fine finishining 16PA6 injection pump plunger until desired size;
4. adopt numerically control grinder to grind Φ 23mm cylindrical, and the degree of depth of control plunger helix is 0.1 ± 0.01mm.
The 3. middle grinding plunger helix of described step is a simulation CNC milling machine processing notch cuttype spiral fluted run trace, and the air bistrique is set on CNC milling machine, utilizes it to grinding spiral groove fine finishining.
The numerically control grinder of step in 3. is to utilize four bolts that described air bistrique is installed on the main shaft plane of CNC milling machine, and a columniform mill row is set on the air bistrique, and this air bistrique is connected with compressed air line with as power resources.
On the above-mentioned air bistrique pressure valve is installed, its controlled pressure is 4bar, and mill row's rotating speed is 60000r/min.
Described cylindrical mill row's a end is installed on the air bistrique threadably, and the other end utilizes binding agent to be fixed with emery wheel, the cylinder that this emery wheel utilization palm fibre corundum is made, and its cylindrical is Φ 6mm, endoporus is Φ 3mm, highly is 9mm.
Improve and the workpiece improvement by said method, there is following technique effect in technical scheme of the present invention than prior art:
The method of processing of the present invention 16PA6 injection pump plunger stepped nonlinear spiral groove has changed that original CNC milling machine is directly processed precision that helicla flute brings and fineness is not good phenomenon, also getting rid of simultaneously quenches exists the influence of distortion on a small quantity to plunger helix, has improved the efficient of the combo work and the oil mass test of postorder.Simultaneously for the CNC milling machine speed of mainshaft is provided, install the air bistrique additional, mill row's rotating speed has been brought up to 60000r/min, be equipped with the equipment of former CNC milling machine again, realize the purpose of Precise Grinding plunger helix, and make the surface smoothness of plunger helix improve greatly.
Description of drawings
Fig. 1 is that the head of 16PA6 injection pump plunger launches schematic diagram.
Fig. 2 is that the c-c of stepped nonlinear spiral groove among Fig. 1 is to view.
Fig. 3 is that the present invention processes plunger helical pitch processing schematic diagram in the method for 16PA6 injection pump plunger stepped nonlinear spiral groove.
The specific embodiment
Come the method for processing 16PA6 injection pump plunger stepped nonlinear spiral groove of the present invention is described in further detail below in conjunction with accompanying drawing and specific embodiment, but can not limit protection scope of the present invention with this.
Method improvement of the present invention mainly contains 2 points, a bit is the adjustment of procedure of processing, and another point is the improvement of process equipment.Specific as follows:
The method that the present invention improves back processing 16PA6 injection pump plunger stepped nonlinear spiral groove comprises the steps:
1. utilize the helicla flute on the CNC milling machine roughing 16PA6 injection pump plunger, and leave the allowance of 0.05mm.Too much in order to prevent later process grinding plunger spiral time slot surplus, make emery wheel cause wear extent big because of load operation, in process, revise the influence of emery wheel and update routine repeatedly to operating efficiency, rough mill helicla flute so former processing method is installed with CNC milling machine, and stayed the correct grinding surplus of 0.05mm.
2. roughing 16PA6 injection pump plunger being heat-treated, specifically is to adopt the means of quenching to make its hardness reach HRC58～62.
3. adopt helicla flute on the numerically control grinder fine finishining 16PA6 injection pump plunger until desired size.Be to have changed a social system numerically control grinder earlier in this step, fill in capable fine finishining at coupled columns then.The CNC milling machine of the 1. middle processing plunger of step helical pitch has possessed the primary condition that forms the helicla flute track, but general grinding processing needs the rotating speed of lathe must reach several ten thousand commentaries on classics, and the performance parameter of checking existing CNC milling machine, its speed of mainshaft is the highest can only to reach 1000r/min, can not reach the condition of grinding, so must dispose a bistrique separately, be fixed on the milling machine spindle plane with four bolts, utilize compressed air that the principle of power resources is provided, the rotating speed that mill is arranged reaches the rotating speed requirement of grinding.
This CNC milling machine carries out improved step: the first step: bistrique 5 is installed on the main shaft 6 of CNC milling machine, and on bistrique 5, install columniform mill row 3,3 one of this mill rows are installed on the bistrique 5 threadably, be provided with lining between bistrique 5 and the mill row 3, emery wheel 4 is loaded onto in the other end, is fixed by binding agent between mill row 3 and the emery wheel 4.Second step: the above-mentioned mill row 3 of school circle and alignment under static state guarantees mill row 3 and CNC milling machine workbench perpendicularity≤0.02mm, and tightens on milling machine spindle 6 planes four bolts with fastening bistrique 3.The 3rd step: open compressed air, make mill arrange 3 and under slow-speed of revolution situation, rotate, check that simultaneously mill row 3 has or not jumping phenomena, and check bistrique 5 inner liner and mill row's 3 gap, guarantee gap error≤0.02mm.The 4th step: the air bistrique is connected with compressed air line with as power resources, consider the linear loss and the local losses of supply air line, thereby make the lower drilling speed that can not improve mill row of some local work pressure of whole air supply system, so on bistrique, settle a pressure valve to guarantee that whole system gas kinetic energy is converted into pressure and allows mill row's rotating speed reach 60000r/min.The pressure valve controlled pressure that is equipped with on the air bistrique transfers to 4bar, makes mill row 3 rotating speed reach about 60000r/min, reaches the rotating speed of grinding spiral groove.As shown in Figure 3, Fig. 3 is that the present invention processes plunger helical pitch processing schematic diagram in the method for 16PA6 injection pump plunger stepped nonlinear spiral groove.
The design of emery wheel, type selecting: according to the rotating speed of numerically control grinder of the transformation of the way, and in conjunction with the material GCr15 high-carbon-chromium bearing steel and the stepped helical pitch structure of spiral fluted of plunger, prevent that emery wheel from interfering keyway.Finally having selected material for use is brown corundum, and cylindrical is Φ 6mm, and endoporus is Φ 3mm, highly is the 9mm cylinder emery wheel.
The grinding test stage: plunger 2 being contained on the CNC milling machine workbench 1, utilizing the numerical control program of milling spiral chute on the CNC milling machine, is that origin of coordinates calibration zero-bit is implemented processing with mill row 3 again, during grinding, strengthens lubricant.Through repetition test, no matter the situation after the plunger helix grinding is the specification requirement that precision or surface smoothness have all reached drawing fully if being compared than before.
4. adopt numerically control grinder to grind Φ 23mm cylindrical, and the degree of depth of control plunger helix is 0.1 ± 0.01mm.
The invention solves the grinding problem of plunger helix, from spiral fluted Milling Process grinding till now in the past, spiral fluted machining accuracy and fineness are greatly improved.And the equipment of CNC milling machine and air bistrique be combined into should have more wide promotional value for the fine finishining of labyrinth, high accuracy product.
Claims (5)
1. a method of processing 16PA6 injection pump plunger stepped nonlinear spiral groove is characterized in that, this method comprises the steps:
1. utilize the helicla flute on the CNC milling machine roughing 16PA6 injection pump plunger, and leave the allowance of 0.05mm;
2. roughing 16PA6 injection pump plunger being heat-treated, specifically is to adopt the means of quenching to make its hardness reach HRC58～62;
3. adopt helicla flute on the numerically control grinder fine finishining 16PA6 injection pump plunger until desired size;
4. adopt numerically control grinder to grind Φ 23mm cylindrical, and the degree of depth of control plunger helix is 0.1 ± 0.01mm.
2. a kind of method of processing 16PA6 injection pump plunger stepped nonlinear spiral groove according to claim 1, it is characterized in that, the 3. middle grinding plunger helix of step is a simulation CNC milling machine processing notch cuttype spiral fluted run trace, the air bistrique is set on CNC milling machine, utilizes it grinding spiral groove fine finishining.
3. a kind of method of processing 16PA6 injection pump plunger stepped nonlinear spiral groove according to claim 2, it is characterized in that, utilize four bolts that described air bistrique is installed on the main shaft plane of CNC milling machine, the columniform mill row of a concentric is set on the air bistrique, and described air bistrique is connected with compressed air line with as power resources.
4 a kind of methods of processing 16PA6 injection pump plunger stepped nonlinear spiral groove according to claim 3, it is characterized in that, described cylindrical mill row's a end is installed on the air bistrique threadably, the other end utilizes binding agent to be fixed with emery wheel, the cylinder that this emery wheel utilization palm fibre corundum is made, its cylindrical is Φ 6mm, and endoporus is Φ 3mm, highly is 9mm.
5. a kind of method of processing 16PA6 injection pump plunger stepped nonlinear spiral groove according to claim 3 is characterized in that, on the described air bistrique pressure valve is installed, and its controlled pressure is 4bar, and mill row's rotating speed is 60000r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100527343A CN101569984A (en) | 2009-06-09 | 2009-06-09 | Method for processing stepped nonlinear spiral groove of 16PA6 injection pump plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100527343A CN101569984A (en) | 2009-06-09 | 2009-06-09 | Method for processing stepped nonlinear spiral groove of 16PA6 injection pump plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101569984A true CN101569984A (en) | 2009-11-04 |
Family
ID=41229535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100527343A Pending CN101569984A (en) | 2009-06-09 | 2009-06-09 | Method for processing stepped nonlinear spiral groove of 16PA6 injection pump plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101569984A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109079607A (en) * | 2018-07-30 | 2018-12-25 | 佛山市北科科技创新服务中心 | A kind of motor for washer processing line of fall auxiliary device |
| CN109822360A (en) * | 2019-04-08 | 2019-05-31 | 苏州大学 | A kind of processing method of the double inner conical surface locating pieces of low centering error |
| CN110605618A (en) * | 2019-09-03 | 2019-12-24 | 无锡威孚马山油泵油嘴有限公司 | Processing technology of plunger grinding end face inclined starting groove |
-
2009
- 2009-06-09 CN CNA2009100527343A patent/CN101569984A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109079607A (en) * | 2018-07-30 | 2018-12-25 | 佛山市北科科技创新服务中心 | A kind of motor for washer processing line of fall auxiliary device |
| CN109822360A (en) * | 2019-04-08 | 2019-05-31 | 苏州大学 | A kind of processing method of the double inner conical surface locating pieces of low centering error |
| CN110605618A (en) * | 2019-09-03 | 2019-12-24 | 无锡威孚马山油泵油嘴有限公司 | Processing technology of plunger grinding end face inclined starting groove |
| CN110605618B (en) * | 2019-09-03 | 2024-04-12 | 无锡威孚马山油泵油嘴有限公司 | Processing technology of plunger grinding end face inclined starting groove |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100455401C (en) | Double hydraulic rolling tool with equal rolling force | |
| CN106425286A (en) | Machining method for deformation control of high-precision thin-wall cylinder shaft | |
| CN101504036B (en) | Manufacture equipment and process for roller bearing spherical roller | |
| Li et al. | Surface integrity of GH4169 affected by cantilever finish grinding and the application in aero-engine blades | |
| CN103737255B (en) | Depth of penetration Deviation Control Method | |
| CN104475842B (en) | A kind of Blisk profile milling technological method for processing | |
| CN106897484A (en) | A kind of preparation method of the efficient low-stress grinding technological parameter of high temperature alloy | |
| Gao et al. | Optimization for internal traverse grinding of valves based on wheel deflection | |
| CN101569984A (en) | Method for processing stepped nonlinear spiral groove of 16PA6 injection pump plunger | |
| CN106736332B (en) | A kind of numerical-control processing method of the High Pressure Turbine Rotor combination with brill tapered hole | |
| CN113601119B (en) | Machining method for high-power diesel engine camshaft | |
| WO2003059569A2 (en) | Method of forming turbine blade root | |
| CN104439468A (en) | Milling cutter suitable for layered milling forming process of integral leaf disk structural profile | |
| CN106695241B (en) | Method for repairing inner taper hole of main shaft of machining center | |
| Staudt et al. | Performance of gears manufactured by 5-Axis milling | |
| CN104440408B (en) | A kind of grinding processing method of cap jet class precision part | |
| CN102658454A (en) | Supersonic machining method of circular-arc face of engine valve | |
| CN109202385A (en) | A kind of booster disc processing method | |
| CN106078110B (en) | A kind of technique with vehicle generation mill production high-precision bearing rings | |
| CN205290475U (en) | Dynamic balance passes dynamic positioning device | |
| CN113635002A (en) | Processing method for solving generation of local high-hardness cracks on small end face of metal part | |
| US11555225B2 (en) | Methods of manufacturing hypoid gears | |
| CN110434571B (en) | Method for machining inner hole of cylinder body | |
| CN103111791A (en) | Vane surface ultrasonic wave machining process | |
| CN109128695B (en) | Method for processing low-temperature valve of aerospace engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091104 |