CN100361778C - Manufacturing method for bottom die of drill bit with composite synneutic diamond plate - Google Patents
Manufacturing method for bottom die of drill bit with composite synneutic diamond plate Download PDFInfo
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- CN100361778C CN100361778C CNB2004100061675A CN200410006167A CN100361778C CN 100361778 C CN100361778 C CN 100361778C CN B2004100061675 A CNB2004100061675 A CN B2004100061675A CN 200410006167 A CN200410006167 A CN 200410006167A CN 100361778 C CN100361778 C CN 100361778C
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Abstract
The present invention relates to a method for manufacturing a polycrystalline diamond composite vane type bit bottom die mould, which mainly solves the problem that the existing bit bottom die mould manufacturing method has the disadvantages of low general machine tool processing and artificial repairing mould precision, large labor intensity, low work efficiency and high moulding cost. The present invention is characterized in that a bit bottom die mould is carried out with entity characteristic decomposition; relations among the characteristics are analyzed; bottom die graphite blank characteristics, bottom die coronal characteristics, cutting tooth space orientation characteristics and replacing tooth characteristics are gradually established from simple shape characteristics; then, the cutting tooth position and the replacing tooth characteristics are combined, and replacing teeth assembled by the cutting tooth position are cut; the positioning of the cutting tooth position and the forming of the milling socket shape are completed; a water power structure is formed according to the cross section shape established by the dimension of a bottom die chip removal block, and thereby, the establishment of single-pole wing bottom die characteristics is completed; an integral bottom die characteristic entity formed by the combination of other wings is established according to the same principle. The present invention has the characteristics of high mould precision, low moulding cost and high productive efficiency.
Description
Technical field:
The present invention relates to a kind of numerical control manufacture method of drill bit mould, especially a kind of manufacture method of polycrystalline diamond compact bit bed die mould.
Background technology:
The polycrystalline diamond compact bit mould is made up of bed die, middle mould, patrix three parts, middle mould and patrix design, processing all are easy to realize, but bed die is the entity with complex-curved feature, drill bit form parameter, cutting teeth position and directioin parameter, hydraulic structure parameter etc. all are that the shape by bed die guarantees, therefore, the design of polycrystalline diamond compact bit bed die and processing are the keys of design of polycrystalline diamond compact bit mould and processing.The formation of present domestic polycrystalline diamond compact bit mould mainly contains two kinds of methods.First kind is engine lathe turning formation drill bit shape, relies on the manual line of dividing head location, plain-milling machine milling to finish the processing of cutting teeth and hydrophthalmia, and the multiple working procedures such as moulding of finishing hydraulic structure by repairing a die are by hand finished again.Its shortcoming of this processing method is that the precision of equipment is low, human error is big, and the uniformity of mould is poor, be difficult to control and ensure the quality of products, and does not reach designing requirement, and labor strength is big, production cost is high, inefficiency.Second kind is to process by Digit Control Machine Tool; at first be that the spatial coordinates calculation of polycrystalline diamond compact bit cutting teeth and hydrophthalmia is come out; manually change into the digital control processing instruction again; utilize Digit Control Machine Tool to process; form the bizet shape of drill bit and the location of cutting teeth; and then the manual hydraulic structure that repairs a die or be stained with respective shapes, carry out certain manual repairing being stained with after again, in addition rounding off forms mould at last.The shortcoming of this processing method be and the complete meaning that is unrealized on digital control processing, processes such as cutting plane establishment, transition still need manual carrying out, and have human error equally, the bit bottom mould mould and die accuracy that processes is low.
Summary of the invention:
In order to overcome the deficiency that manual modeling error is big, mould and die accuracy is low, manufacturing cost is high that exists in the existing polycrystalline diamond compact bit bed die mould manufacturing, the invention provides a kind of manufacture method of polycrystalline diamond compact bit bed die mould, the manufacture method of this kind polycrystalline diamond compact bit bed die mould makes the bit bottom mould mould process can accurately realize the location of cutting teeth and hydrophthalmia, fully realize designing requirement, but mould and die accuracy is high and once-forming, alleviate working strength of workers, improved operating efficiency.
Technical scheme of the present invention is: a kind of manufacture method of polycrystalline diamond compact bit bed die mould, this method comprises the steps:
(1) polycrystalline diamond compact bit bed die mould is carried out substance feature and decompose, it is decomposed into bed die graphite blank, polycrystalline diamond compact bit bizet, location, single cutting teeth position, all location, the cutting teeth positions combinations of the hilted broadsword wing, substitutes tooth and promptly mill nest shape, six principal characters of chip area shape;
(2) utilize Pro/E software to set up the column graphite blank feature of bit bottom mould mould with feature modeling function;
(3) utilize Pro/E software to set up the bizet feature of bit bottom mould mould with feature modeling function;
(4) utilize Pro/E software to set up the cutting teeth position location feature of bit bottom mould mould with feature modeling function;
(5) utilize Pro/E software to set up the alternative tooth feature of bit bottom mould mould with feature modeling function;
(6) utilize Pro/E software to excise the alternative tooth that assembles according to the cutting teeth position, form mould tooth nest with feature modeling function;
(7) utilize Pro/E software to set up first, second cross sectional shape according to bed die chip area size with feature modeling function, determine to form substance feature behind the stretching distance, cut after the feature of top between each curved surface rounding off, chamfering in addition, so far finish a blade contour of bit bottom mould mould;
(8) make other three blade contours of bit bottom mould mould successively according to above-mentioned steps (4) to step (7);
(9) blade contour with four bed die moulds makes up with the coordinate system alignment, becomes a complete polycrystalline diamond compact bit bed die mold shape;
(10) to utilize computer-aided manufacturing software to generate the digital control code that is convertible into five four-linkage numerical control machine tool programs in conjunction with the processing technology of determining with Fabrication parameter be the NC code to the bed die physical model of call establishment, and further edit-modify becomes and can be instructed by Digit Control Machine Tool numerical control that accept, that can realize processing purpose again;
(11) utilize Digit Control Machine Tool, the operation nc program processes mold bottom die.
The present invention has following beneficial effect: use technical scheme provided by the present invention and carry out the processing that the processing of polycrystalline diamond compact bit bed die has guaranteed drill structure parameter, especially the distributing position of cutting teeth and the every angle parameter of bit cutting tooth, greatly reduce human error, it more can be adhered to specification, can accurately realize the location of cutting teeth and hydrophthalmia; Mold shape can fully realize designing requirement; Can " turn over mould " by the bed die shape that designs and form formpiston, this formpiston and actual polycrystalline diamond compact bit are very close, can observe and check the design effect of bed die more intuitively, greatly facilitate designer's parameter adjustment, improve the Mould design quality; Realized polycrystalline diamond compact bit Mould Machining numerical controlization, automation, the mould once-forming has alleviated working strength of workers, has improved operating efficiency, shortens new product development cycle.
Description of drawings:
Fig. 1 is polycrystalline diamond compact bit geometrical structure parameter and coordinate system figure
The specific embodiment:
Design philosophy of the present invention is as follows: the polycrystalline diamond compact bit mould is bed die especially, and it is the entity with complex-curved feature.Machine tool is processed and is manually repaired a die, and human error is big, and homogeneity of product is poor, and labor strength is big, is difficult to control and ensure the quality of products, and does not reach designing requirement, and therefore advanced manufacturing process technology just seems very important.For the crudy that improves mould with enhance productivity, the trend that adapts to current machinery manufacturing industry CAD and computer-aided manufacturing integrative development, be necessary that very to polycrystalline diamond compact bit mould manufacturing carries out the research of CAD/CAM integrated technique and then utilize this physical model to generate the NC code by computer-aided manufacturing to realize the three-dimensional modeling that carries out mould by CAD, in conjunction with concrete Digit Control Machine Tool and processing technology more further edit-modify becomes can be by Digit Control Machine Tool acceptance, can realize the numerical control instruction of processing purpose.Utilization possesses the moving and car of five tetrads, mills, bores the Digit Control Machine Tool of function, the operation nc program, realize according to design and processes require to locate automatically, feed, integrate the car mould, rule, mill mould, four procedures that repair a die, the mould once-forming.
Adopt the parametrization design based on above-mentioned consideration decision, replace wire-frame model and surface model with physical model, because it is physical model is directly perceived, true, very approaching with the product in producing.Simultaneously, physical model has physical attributes such as quality, volume, barycenter and center of gravity, can analyze model easily and subsequent treatment such as manufacturing.
Dimension Drive is the important feature of parametrization design.So-called Dimension Drive is exactly to decide the shape of model with moulded dimension, and a model is defined by one group of size with certain correlation.After the designer revises dimensional parameters, can obtain new mould shapes through the regeneration processing, directly perceived quick.This sees drawing, describes with size and be easy to accept the engineering staff of part custom.
Assembling and correlation etc. are carried out rationally abstractly can obtaining various types of features, for example substance feature, curved surface features, circular hole feature, datum plane feature.Large-scale model can be regarded as and be generated according to the certain way combination by a plurality of different types of features.With respect to wire-frame model, surface model and physical model, feature modelling is that some complicated operations are shielded, the designer only need can create all kinds of foundation characteristics by formative methods such as rotation, stretching, scannings after drawing two-dimentional sketch, on foundation characteristic, add all kinds of placement features then, as features such as circular hole, chamferings, whole design process is directly perceived, terse.In fact, to take seriation, standardization be exactly that the typical case of parametrization design philosophy uses to the product of relatively finalizing the design for planform in the production.In addition, whether the parametrization design also helps between the inspection moulded dimension consistent, whether has the situation of underconstrained on the model, if having, system can provide relevant prompting in good time.To be first cover be used for the software of practical engineering application with Parametric Design Theory with the Pro/E software of U.S. PARAMETER TECHNOLOGY COMPONY company exploitation, thus the technical program to select it for use be application tool.
Be that the concrete Pro/E of an application software carries out feature modeling, computer-aided manufacturing below, utilize 5-axle car to mill machining center then and finish the example that polycrystalline diamond compact bit bed die mould is made:
(1) polycrystalline diamond compact bit bed die mould is carried out substance feature and decompose, it is decomposed into bed die graphite blank, polycrystalline diamond compact bit bizet, location, single cutting teeth position, all the cutting teeth position location combinations of the hilted broadsword wing, tooth nest shape, six principal characters of chip area shape.
(2) utilize Pro/E software to set up the bed die graphite blank feature of bit bottom mould mould with feature modeling function, promptly utilize Pro/E software, under its option for features, select establishment-entity-Jia material-stretch function for use, according to the blank dimension circle that draws, determine back input stretching distance, set up a part drawing, thereby obtain bed die blank feature.
(3) utilize Pro/E software to set up the bizet feature of bit bottom mould mould with feature modeling function, promptly utilize Pro/E software feature-establishment-entity-shearing material-spinfunction, draw the bizet shape according to drill bit size grass, after revolving three-sixth turn, set up a part drawing, thereby obtain the drill bit shape facility.
(4) utilize Pro/E software to set up the cutting teeth position location feature of bit bottom mould mould with feature modeling function, be circumferential angle promptly according to the mould parameter that mills on the polycrystalline diamond compact bit cloth tooth figure, center radius, lateral angle, the elevation angle, normal angle, six parameters of tooth proud exposure, utilize the three-dimensional transforming principle of 2-D data, set up the different plane of references, reference axis, determine the cutting plane, composite sheet cutting teeth center, promptly in Pro/E software, use feature-establishment-entity-Jia material-stretch function, with the cutting plane is that grass is painted selected plane, with the cutting teeth center is the center of circle, replacing the outside dimension of sheet with cutting teeth graphite is that diameter of a circle is drawn a circle, the stretching certain distance gets final product for 5～10 millimeters, thereby set up the space multistory position of tooth, save as part drawing, set up the position of all the other teeth successively and preserve file.
Realize the accurate location of cutting teeth position, must set up the relation that transforms between two dimension, the three-dimensional.The three-dimensional transforming principle of 2-D data is as follows: the 2-D data of reflection cutting teeth parameter has six on the polycrystalline diamond compact bit cloth tooth figure: it comprises the radius R of cutting teeth center on drill bit, axial height H (perhaps the tooth of cutting teeth reveals height) and circumferential position angle (circumferentially angle) θ.The elevation angle φ of cutting teeth (the title rake angle that has), lateral angle β (the title side corner that has) and normal angle (the title assembling angle γ that has).
With the 2-D data three dimensional stress that reflects on the polycrystalline diamond compact bit cloth tooth figure, thereby carry out the location of cutting teeth, the establishment of cutting plane, this is the key that guarantees polycrystalline diamond compact bit mould three-dimensional modeling.According to the characteristics of polycrystalline diamond compact bit structure and motion, set up composite coordinate system as shown in Figure 1, the implication of its Chinese and English " bit axis " is a drill axis.
Wherein the drill bit cylindrical-coordinate system is vertical pivot O with the drill axis
1H
1, set up a right-handed system cylindrical-coordinate system O who is fixed on the drill bit
1R
1θ
1H
1, the cutting teeth center O
2Coordinate in this coordinate system is O
2(R, θ, H), R, θ, H are constant when drill bit movement; The cutting teeth rectangular coordinate system is in order to try to achieve the relation between the several dimensional orientation angles on the cutting teeth, in cutting teeth working face center O
2The place sets up the composite perpendicular coordinate system of cutting teeth, and it is made up of four rectangular coordinate system in space, is illustrated respectively below:
A, cutting teeth position coordinates system: to cross O
2The drill bit radial plane of point is as O
2X
1Z
1The plane, O
2Y
1Perpendicular to this face, O
2Z
1Be parallel to O
1H
1, set up the rectangular coordinate system O of a right-handed system
2X
1Y
1Z
1
B, cutting teeth assembling coordinate system: with O
2X
1Y
1Z
1O in the coordinate system
2X
1Axle and O
2Z
1The axle according to the assembling angle γ direction around O
2Y
1γ angle of axle rotation is cutting teeth assembling coordinate system O
2X
2Y
2Z
2, the O of this coordinate system
2Z
2Axle is parallel to the tooth mast axis or crosses O
2The bit face exterior normal at some place, O
2X
2Z
2Still in the drill bit radial plane.
C, cutting flank change coordinate system: with O
2X
2Y
2Z
2O in the coordinate system
2X
2Axle and O
2Y
2Axle is pressed side corner β direction around O
2Z
2β angle of axle rotation, the cutting flank change coordinate system O
2X
3Y
3Z
3, the O of this coordinate system
2X
3Axle is in the cutting teeth working face.
D, cutting teeth fundamental coordinate system: with O
2X
3Y
3Z
3O in the coordinate system
2Y
3Axle and O
2Z
3Axle is pressed the direction of rake angle φ around O
2X
3φ angle of axle rotation, cutting teeth fundamental coordinate system O
2X
4Y
4Z
4The O of this coordinate system
2X
4Z
4The plane is exactly the cutting teeth working face, O
2Y
4Axle is the normal of cutting teeth working face.So far, just realized of the conversion of the auxiliary design of polycrystalline diamond compact bit mould 2-D data to three-dimensional.
Cutting teeth position location feature is set up concrete steps:
A, cross default coordinate system A1 axle and a datum level (being assumed to be the RIGHT face) at angle (angle value is the size at the circumferential angle of cutting teeth, used parameter be with Mould Machining go into cutter point mill in other words nest go into the cutter point be benchmark definite mill mould parameter) set up the DTM1 face.
B, do the DTM2 face vertical with the DTM1 face around the A1 axle.
C, offset distance DTM2 (distance is the center radius of cutting teeth) obtain the DTM3 face.
E, set up reference axis, the intersection that selects DTM1 and DTM3 two sides to intersect is the A2 axle.
F, setting up datum mark, is that datum mark promptly mills nest and goes into the cutter point with the intersection point of A2 axle and bizet curved surface.
G, DTM1 face are around angle of A2 axle rotation, and angle value is the lateral angle of cutting teeth, obtains the DTM4 face.
H, mistake are gone into the cutter point and are the plane DTM5 parallel with horizontal plane.
I, set up reference axis, the intersection that selects DTM4 and DTM5 two sides to intersect is the A3 axle.
J, DTM4 face obtain the DTM6 face around an A3 axle rotation angle (angle value is the elevation angle of cutting teeth).
K, make the DTM7 face vertical with the DTM6 face around the A3 axle.
L, be a datum mark, on the DTM6 face, do a curve to go into the cutter point.Length of a curve and direction are determined by cutting teeth normal angle, two parameters of tooth proud exposure.
M, determine the center of cutting teeth, another end points of the rapid curve of doing of previous step is the center of cutting teeth.
N, be datum mark,, import size, set up the locus of tooth with feature-establishments-entity-Jia material-stretch function with the center (composite sheet center) of cutting teeth.
(5) utilize Pro/E software to set up the alternative tooth feature of bit bottom mould mould with feature modeling function, owing to adopt the composite sheet of different-diameter, different-thickness, so the shape of cutting teeth and cutting teeth supporting clutch have nothing in common with each other.We need do the different alternative tooth of some appearance and sizes, and it is of a size of the space that supporting clutch is inlayed into and had to assurance corresponding size composite sheet, for the basis is carried out in next step assembling.
(6) utilize the alternative tooth of the excision function excision of Pro/E software according to the assembling of cutting teeth position with feature modeling function, form mould and mill the nest shape, promptly utilize the PRO/E assembling function the alternative tooth of ready-made different size, utilize coupling, alignment (face, point, axle) to be assembled in the mould and to go, then utilize the excision function of Pro/E, to cut away according to the alternative tooth of cutting teeth position assembling, what just formed mould mills the nest shape.
(7) utilize Pro/E software with feature modeling function, utilize feature-mixing-grass to paint function according to bed die width of chip space size, set up first, second cross sectional shape, determine to form substance feature behind the stretching distance, section shape size grass according to chip area is drawn section shape, cut feature rounding off in addition between each curved surface at last in top after the rotation, chamfering, promptly in Pro/E, utilize feature-newly-built-Jia material-senior-mixing order of Pro/E, size according to the bed die chip area, set up first cross sectional shape, second cross sectional shape, input stretching distance, form substance feature, again according to the size of bed die chip area, utilize and shear function and cut the top feature, rounding off in addition between each curved surface, chamfering is finished modeling.
(8) make other three blade contours of bit bottom mould mould successively according to above-mentioned steps (4) to step (7);
(9) blade contour with four bed die moulds makes up with the coordinate system alignment, becomes a complete polycrystalline diamond compact bit bed die mold shape;
(10) be the NC code with physical model by computer-aided manufacturing software combined process information, concrete Digit Control Machine Tool and Fabrication parameter generation numerical control code, further edit-modify becomes and can be instructed by Digit Control Machine Tool numerical control that accept, that can realize processing purpose again, and detailed process is as follows:
Select File menu in Pro/E-newly-built-manufacturing-determine ejects and makes module;
The model of in menu management, selecting modeling-assembling-reference model-selection to be stored in to have set up under the respective directories-open-finish.
In menu management, select to process-carry out operating and setting and (comprise the lathe selection, processing reset and withdrawing face, these depend on lathe and technology that you use)-determine-select that form processing (comprises the chamber groove, milling surface etc., these are relevant with crudy and working (machining) efficiency, because mould is the complex-curved feature entity with chamber groove, when can rough milling, we select the chamber groove, select the curved surface milling during finish-milling)-sequence setting (selection cutter, machined parameters)-select cutter (to import diameter, length, angular radius)-use-determine-be provided with (the input Fabrication parameter, this depends on the material of mould, process tool and lathe function)-close-finish-choose machining feature-demonstration track-screen demonstrate-play-close-to finish sequence-CL data-NC sequence-choose corresponding sequence-file---choose MCD file-finish-preserve CL file (and writing down the corresponding document name)-determine-finish-choose corresponding machine tool system (this is relevant with the use machine tool system)-affirmation export-to finish.So just obtain the NC code of corresponding operation.
Add necessary NC code such as tool changing information, C axle, the B axle anglec of rotation etc. in addition again, these are relevant with processing technology and the lathe determined, determine according to actual conditions.
Require to determine that according to the functional characteristics of the features of shape of polycrystalline diamond compact bit mould, five four-linkage numerical control machining centers and the crudy of limitation, mold materials attribute and mould concrete machining process is as follows:
A, the operation of carrying out according to the mold shape feature are divided: turning processing, Milling Process, drilling processing
B, selection work step, form processing and cutter:
Turning processing: select rough turn or finish turning, carbide-tipped lathe tool T1.
Milling Process: rough mill the groove processing of flowing current separation chamber, chamber, with the ball endmill T2 of diameter 19.4; Finish-milling curved surface selected songs facing cut is cut, with the ball endmill T3 of diameter 12; Finish-milling curved surface selected songs facing cut is cut, with the ball endmill T4 of diameter 6; Back chipping selected songs facing cut is cut, with the ball endmill T5 of diameter 2.
Drilling processing: the drill bit T6 that selects corresponding size according to the hydrophthalmia size
C, the Fabrication parameter of determining according to the crudy of mold materials attribute and mould
D, polycrystalline diamond compact bit mould NC job sequence file generate
After polycrystalline diamond compact bit mould threedimensional model is set up, carry out the preparation (being the generation of NC program file) of actual first being processed.The generation of NC job sequence file promptly is the main composition part of lathe work instruction repertorie, and the computer software in the present embodiment remains application Pro/E software and finishes
A, turning processing
According to bed die chip removal piece design parameter, manual programming.Promptly calculate the coordinate of each flex point, utilize the Straight Line and Arc instruction to finish programming, will consider the cutting depth of each step circulation here, this is relevant with the cutter that mold materials uses, and can adjust voluntarily.
B, wing roughing
In Pro/E software, use " manufacturing " module, call in " processing of chamber groove " function and finish this part processing.Use major diameter cutter T2 (φ 19.4mm), big cutting output to rough mill fast and finish.
The finish-milling of c, wing surface configuration
Utilize " curved surface milling " function in the mould processing, the formation sequence code file.Size diameter cutter T3 (φ 12mm) in the use, little span finish-milling is finished.
The milling in d, tooth cave
Utilize " curved surface milling " function in the mould processing, formation sequence processed file code.Size diameter cutter T4 (φ 6mm) in the use, little span finish-milling is finished.
E, back chipping are handled
Utilize " curved surface milling " function in the mould processing, formation sequence processed file code.Use small size diameter cutter T5 (φ 2mm), little span finish-milling is finished.It is a very important step that back chipping is handled, because what use previously is ball cutter, has just stayed the chamfering of corresponding cutters radius in cutting plane and cylin-drical tooth nest transition position, if this chamfering is not removed, can't coincide during the composite sheet soldering.Therefore when foundation substitutes tooth, there is a width to surpass the back chipping tool diameter at alternative tooth and cooperation place, cutting plane, diameter surpasses the circular arc of 2 millimeters of cutting teeth diameters, we choose this feature like this, carry out milling with the cutter of 2 mm dias and just remaining chamfering can be removed, it is good to make cutting plane and composite sheet coincide.
F, the processing of hydrophthalmia hole
Parameters such as circumferential angle, center radius, jet angle, the hydrophthalmia according to hydrophthalmia on the cloth tooth figure mills deeply, hydrophthalmia aperture, manual establishment hydrophthalmia NC sequencer program.
(11) utilize Digit Control Machine Tool, the operation nc program processes mold bottom die.
Polycrystalline diamond compact bit die numerical control process is as follows:
At first start turning milling center, clamping blank then, call in and under the effect of this program, use after the program carbide-tipped lathe tool hole to carry out turning processing successively, use the different various cutters of diameter to carry out Milling Process, utilize the drill bit T6 that has chosen to bore the hydrophthalmia hole then, obtain the finished product mould at last.
Use technical solutions according to the invention and can produce following beneficial effect:
The location that a, the design of applying three-dimensional mould can accurately realize cutting teeth and hydrophthalmia; Mold shape has fully realized designing requirement; Can " turn over mould " by the bed die shape that designs and form formpiston, this formpiston and actual polycrystalline diamond compact bit are very close, can observe and check the design effect of bed die more intuitively, greatly facilitate designer's parameter adjustment, improve the Mould design quality.
B, polycrystalline diamond compact bit Mould Machining numerical controlization, automation, mould once-forming have been realized.Alleviate working strength of workers, increased work efficiency, shortened new product development cycle.
C, guaranteed the distributing position and the every angle parameter of bit cutting tooth of processing, the especially cutting teeth of drill structure parameter to greatly reduce human error, it more can be adhered to specification.
D, die numerical control process technology reduce operation sequence, improve process flexibility, product precision height, and machining reproducibility is good, and the inherent quality and the presentation quality of drill bit are significantly improved.
The Computerized Numerical Control processing technology of e, initiative state inner mold once-forming promotes enterprise competitiveness.
Can make following benefit evaluation to technical solutions according to the invention:
1, direct economic benefit
Save working hour expense: formed originally that a bed die need pass through the car mould, rules, mills mould, four procedures that repair a die need 11 hours man-hours altogether, and only needed 2.5 hours now, every mould saving 8.5 hours.Now produce 290 moulds and can save ten thousand yuan of 15 yuan of working hour expenses/only hour * 290=0.435.
Save labour cost: worker 5 people that repaired a die originally, now be kept to 2 people, save ten thousand yuan of 40,000 yuan/people * 3=12 of labour cost.
Direct economic benefit: 0.435 ten thousand yuan+120,000 yuan=12.4 35 ten thousand yuan.
2, indirect economic effect
A, because the stable drill bit damages that reduces of drill quality.
The percentage that drill bit use in the past goes wrong is 1.3%, and the drill bit of digital control processing mould does not go wrong, and can save the drill bit damages is ten thousand yuan of 130 * 1.3% * 25000=4.225.
B, because the drilling cost that drilling period is saved is shortened in the raising of rate of penetration.
Φ 215R235H polycrystalline diamond compact bit is adjusted well and is improved back average mechanical 30m/h, average mechanical 28.1m/h before improving, and the design well depth of individual well is by 1200 meters calculating, and the drilling time that can save is 1200/28.1-1200/30=2.85 hour.The drilling time that every mouthful of well of development well can be saved calculates by adjusting well.The drilling cost of every mouthful of well is used 130 by 350 yuan of/hour calculating, and the drilling cost that can save is ten thousand yuan of 2.85 * 350 * 130=12.97.
Table 1 is the experimental result data of digital control processing mould drill bit
| The pound sign area code | Time | The drill bit specifications and models | The drill bit numbering | Design well depth (m) | Well section (m) | Drilling depth (m) | The pure brill time (h:mi n) | Average drilling speed (m/h) |
| Middle 102-256 (Nan Yiqu) | 4.5 | 215R235H | 1-89 | 1195 | 0-1195 | 1195 | 38:55 | 30.7 |
| Middle 100-255 (Nan Yiqu) | 4.13 | 215R235H | 1-89 | 1178 | 0-1178 | 1178 | 37:40 | 31.2 |
| 8-31-717 (Nan6-8Qu) | 4.21 | 215R235H | 1-89 | 1235 | 0-1235 | 1235 | 39:35 | 31.2 |
| Apricot 11-3-water 56 (apricot 8-12 crosses in east) | 4.11 | 215R235H | 3-90 | 1290 | 0-1290 | 1290 | 43:25 | 29.7 |
| Apricot 11-3-the third 563 (apricot 8-12 crosses in east) | 4.17 | 215R235H | 3-90 | 1295 | 0-1295 | 1295 | 44:55 | 28.8 |
Table 2 is the technical indicator of the manual drill bit that repairs a die
| Block | Specifications and models | Statistical magnitude | Average single drilling depth (m) | Average rate of penetration (m/h) |
| Nan Yiqu | 215R235H | 40 | 2840 | 28.9 |
| The apricot district | 215R235H | 20 | 2608 | 26 |
Table 3 improves front and back bit technique index contrast situation for mould process
| Well is other | Bit model | Average single drilling depth (m) | Average rate of penetration (m/h) | Statistical magnitude (only) | |||||
| Before the improvement | After the improvement | Contrast | Before the improvement | After the improvement | Contrast | Before the improvement | After the improvement | ||
| Development well | 215R235H | 1698 | 1800 | 102 (6％) | 27.9 | 29.3 | 1.4 (5.1％) | 10 | 28 |
| Adjust well | 215R235H | 2740 | 2995 | 255 (9％) | 28.1 | 30 | 1.9 (6.7％) | 89 | 40 |
3, social benefit
Adopt the die numerical control processing technology, shortened the manufacturing and the remodeling cycle of product, improved the bit technique index.Thereby the saving drilling cost shortens drilling period, accelerates Oilfield developing speed, improves the production capacity construction in oil field.
Claims (1)
1. the manufacture method of a polycrystalline diamond compact bit bed die mould is characterized in that this manufacture method may further comprise the steps:
(1) polycrystalline diamond compact bit bed die mould is carried out substance feature and decompose, it is decomposed into bed die graphite blank, polycrystalline diamond compact bit bizet, location, single cutting teeth position, all location, the cutting teeth position combinations of the hilted broadsword wing, substitutes tooth is tooth nest shape, six principal characters of chip area shape;
(2) utilize Pro/E software to set up the column graphite blank feature of bit bottom mould mould with feature modeling function;
(3) utilize Pro/E software to set up the bizet feature of bit bottom mould mould with feature modeling function;
(4) utilize Pro/E software to set up the cutting teeth position location feature of bit bottom mould mould with feature modeling function;
(5) utilize Pro/E software to set up the alternative tooth feature of bit bottom mould mould with feature modeling function;
(6) utilize Pro/E software to excise the alternative tooth that assembles according to the cutting teeth position, form mould tooth nest with feature modeling function;
(7) utilize Pro/E software to set up first, second cross sectional shape according to bed die chip area size with feature modeling function, determine to form substance feature behind the stretching distance, cut after the feature of top between each curved surface rounding off, chamfering in addition, so far finish a blade contour of bit bottom mould mould;
(8) make other three blade contours of bit bottom mould mould successively according to above-mentioned steps (4) to step (7);
(9) blade contour with four bed die moulds makes up with the coordinate system alignment, becomes a complete polycrystalline diamond compact bit bed die mold shape;
(10) the bed die physical model of call establishment utilizes computer-aided manufacturing software to generate the digital control code that is convertible into five four-linkage numerical control machine tool programs in conjunction with processing technology of determining and Fabrication parameter, and further edit-modify one-tenth can be by Digit Control Machine Tool numerical control instruction that accept, that can realize processing purpose again;
(11) utilize Digit Control Machine Tool, the operation nc program processes mold bottom die.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100061675A CN100361778C (en) | 2004-03-05 | 2004-03-05 | Manufacturing method for bottom die of drill bit with composite synneutic diamond plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100061675A CN100361778C (en) | 2004-03-05 | 2004-03-05 | Manufacturing method for bottom die of drill bit with composite synneutic diamond plate |
Publications (2)
| Publication Number | Publication Date |
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| CN1559749A CN1559749A (en) | 2005-01-05 |
| CN100361778C true CN100361778C (en) | 2008-01-16 |
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| CNB2004100061675A Expired - Fee Related CN100361778C (en) | 2004-03-05 | 2004-03-05 | Manufacturing method for bottom die of drill bit with composite synneutic diamond plate |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4392397A (en) * | 1979-06-25 | 1983-07-12 | U.S. Philips Corporation | Method of producing a drawing die |
| US4780274A (en) * | 1983-12-03 | 1988-10-25 | Reed Tool Company, Ltd. | Manufacture of rotary drill bits |
| CN2380339Y (en) * | 1999-08-10 | 2000-05-31 | 冶金工业部钢铁研究总院 | Mould for mfg. of diamond thin-wall drill-bit |
| CN1299916A (en) * | 1999-12-13 | 2001-06-20 | 胜利石油管理局钻井工艺研究院 | Manufacture of diamond bit die |
-
2004
- 2004-03-05 CN CNB2004100061675A patent/CN100361778C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4392397A (en) * | 1979-06-25 | 1983-07-12 | U.S. Philips Corporation | Method of producing a drawing die |
| US4780274A (en) * | 1983-12-03 | 1988-10-25 | Reed Tool Company, Ltd. | Manufacture of rotary drill bits |
| CN2380339Y (en) * | 1999-08-10 | 2000-05-31 | 冶金工业部钢铁研究总院 | Mould for mfg. of diamond thin-wall drill-bit |
| CN1299916A (en) * | 1999-12-13 | 2001-06-20 | 胜利石油管理局钻井工艺研究院 | Manufacture of diamond bit die |
Non-Patent Citations (3)
| Title |
|---|
| PDC钻头优化设计与CAD系统软件开发. 李树盛，侯季康，林玉龙，王福修，彭烨.石油矿场机械，第26卷第1期. 1997 * |
| PDC钻头的发展趋势. 陈国庆.石油机械，第31卷第增刊期. 2003 * |
| 金刚石钻头复合片模具设计机理探讨. 周思柱，李成刚，胡于进，曹继光.中国机械工程，第14卷第10期. 2003 * |
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| Publication number | Publication date |
|---|---|
| CN1559749A (en) | 2005-01-05 |
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