CN102275144B - Grinding head forming method used for polishing blisk - Google Patents
Grinding head forming method used for polishing blisk Download PDFInfo
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- CN102275144B CN102275144B CN 201110257776 CN201110257776A CN102275144B CN 102275144 B CN102275144 B CN 102275144B CN 201110257776 CN201110257776 CN 201110257776 CN 201110257776 A CN201110257776 A CN 201110257776A CN 102275144 B CN102275144 B CN 102275144B
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- grinding head
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- dolioform
- mold
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Abstract
The invention discloses a grinding head forming method used for polishing a blisk. The grinding head forming method comprises the steps of designing of a die, installation of the die and forming of the grinding head. A forming die is provided with four steps, and waist-drum-shaped die cavities of the same size are arranged on all the steps correspondingly. The die cavities are matched with the forming surface of the grinding head, and microgrooves are milled on the surface of the die cavities so as to improve the friction function between the die and the grinding head. The highest step and the lowest step of the die are provided with a threaded hole respectively for installing puller bolts. When the die is installed, a positioning hole below the die and the positioning hole of a working bench are matched through a positioning pin to fix the die. When the grinding head is formed, an electric spindle is opened, and the vertical central line of the polishing grinding head and the central lines of the die cavities are superposed in a condition of higher rotating speed so that the grinding head falls behind gradually, and the grinding head and the die cavities are ground so as to achieve the forming function. The grinding head disclosed by the invention has a simple structure, is convenient to install, has high positioning precision and high precision of chamfering shape, and improves the polishing efficiency of the blisk.
Description
Technical field
The present invention relates to a kind of bistrique forming method for the blisk polishing, belong to aero-engine, turbine design and manufacturing technology field, particularly blisk of engine polishing processing technique field.
Background technology
Blisk is the vitals of aero-engine, turbine, and glossing is last procedure of leaf dish processing as a whole, directly influences the aeroperformance of its surface quality and complete machine.The shape of polishing process technology its grinding head for polishing has substantial connection with the quality of quality of finish again.
Disclose a kind of grinding head for polishing that can adapt to surface to be machined automatically in the Chinese patent 200620129311, this bistrique can be followed the tracks of the degree of deformation on workpiece to be machined surface, can effectively keep the original rolling shape of surface of the work in the time of grinding-polishing.Described a kind of high speed bistrique manufacture method of processing precise hole in patent 200810237491, this method has the major axis rigidity that improves emery wheel and connect, the advantage of exempting re-graduation dynamic balancing operation.Introduced a kind of powerful efficient cylindrical bistrique for large-scale grinding machine in the patent 200920125343, the rigidity of the efficient cylindrical bistrique of this brute force self and Immunity Performance are applicable to the high-rate grinding of grinding roller outer round surface than higher.
Mostly what prior art was related is at objects such as pottery, stone material and rolls, and very few to the introduction of bistrique forming method.Be foursquare cylindrical shape and use more grinding head for polishing to be generally axial cross section, if not to the grinding head for polishing moulding, the edge circumference of bistrique at first contacts part, and the processing back just can form the bigger lines of spacing of queueing discipline at blade surface.The generation of this phenomenon has reduced the surface gloss of integrated impeller blade, even causes the part after the polishing to have than bigger percent ripple before the polishing.For the polishing at the less positions of processing space such as blisk blade root, leaf tenon, the cutter spacing track of cylinder bistrique is difficult to meet program path simultaneously, causes unnecessary excessive polishing and shortcoming polishing easily.Traditional polishing process method is manually-operated, and its human factor of method of the hand-held abrasive wheel forming of operating personnel is bigger, and the polishing process removal amount is inhomogeneous, and the bistrique shape after the moulding is also irregular.
Summary of the invention
Easily cause emery cloth wheel out-of-shape for overcoming prior art moulding bistrique, precision be cannot say for sure to demonstrate,prove, and the deficiency that disturbing factor is big the invention provides a kind of bistrique forming method for the blisk polishing.The bistrique forming method of this polishing is the polishing object with the blisk, and grinding head for polishing is shaped to dolioform; In the grinding head for polishing forming process, broken away from traditional manually-operated poor efficiency, the situation of formed precision difference, the cutter spacing track of control bistrique has been avoided ripple not occurring because moulding does not precisely cause the blisk surface, has improved the quality of finish of blisk.
The technical solution adopted for the present invention to solve the technical problems is: comprise the design of mould, the installation of mould, the moulding of bistrique.
The present invention is according to the structure of mould, mold is designed to four layers of step-like cuboid, every layer of ledge surface is rectangle, and distributing successively on the step from high to low is provided with the dolioform die cavity of four kinds of sizes from small to large, and the die cavity on every layer of step is measure-alike; Two sidewalls of dolioform die cavity are rectangular surfaces, the length of rectangular surfaces equals the diameter of grinding head for polishing, width is 1/2nd of grinding head for polishing radius, the bottom is the parabola that smoothly joins with rectangular surfaces, the distance of parabolic least significant end and step upper surface equals the radius of grinding head for polishing, parabolic two ends and rectangular surfaces are tangent, and die cavity face and waist drum shape shape face fit like a glove.
Described dolioform die cavity evenly distributes along length direction on each layer of mold step surface, and is positioned on the center line of width.
Be drilled with screwed hole on the highest and minimum step at described mold two ends, and the screwed hole axis is positioned at the symmetrical centre of this layer length of bench and width, screwed hole is used for installing and holds out against screw, installs pad additional holding out against between screw and the mould.
Described mold bottom center line along its length is provided with two dowel holes, and the dowel hole axis is 1/10th of die width apart from the distance at mold edge.
Milling has microgroove on the described dolioform die cavity concave surface, to increase the rubbing action of mould and bistrique;
The present invention must insert alignment pin in the pin-and-hole of mold correspondence when the installation mold body, and is installed in the pin-and-hole on the workbench, and mold is limited on the workbench, and installs and hold out against screw and tighten up the installation mold body.
The present invention is when the bistrique forming process, the axial end that guarantees grinding head for polishing is parallel with mold width end face, and the vertical center line of bistrique and dolioform die cavity central lines, the grinding head for polishing level of rotation is at a high speed embedded in the die cavity, sand grains and the grinding head for polishing of dolioform die cavity are fully rubbed, coincide up to bistrique shape and dolioform die cavity shape.
Beneficial effect
The present invention is based on the bistrique forming method of blisk polishing, select for use silicon carbide abrasive and bond resin to make mould; On mold, be provided with dolioform die cavity, the size of grinding head for polishing is selected corresponding dolioform die cavity, the forming surface that the surface of dolioform die cavity and grinding head for polishing need fits like a glove, and milling has microgroove on dolioform die cavity concave surface, to increase the rubbing action of mould and grinding head for polishing.Mold is provided with four layers of step, the dolioform die cavity of corresponding same size on every layer of step, and dolioform die cavity evenly distributes along length direction on each layer of mold step surface, and is positioned on the center line of width.The two ends of mold are drilled with at the median plane of the highest and minimum length of bench direction the screwed hole that holds out against screw are installed.During installation mold, the locating hole below the mold and the locating hole of workbench are concrete by the alignment pin fixed die that cooperatively interacts.During the bistrique moulding, open electric main shaft, under the situation of higher rotation speed, make vertical center line and the die cavity central lines of grinding head for polishing, progressively fall grinding head for polishing and make it fully to rub with the abrasive grain of dolioform die cavity, up to grinding head for polishing shape and the identical moulding of dolioform die cavity shape.
The present invention has simple in structure, and is easy for installation, and chamfer shape precision height is convenient and swift; The cutter spacing track of control bistrique has been avoided the situation of ripple not occurring because moulding does not precisely cause the blisk surface, has improved the quality of finish of blisk.
Description of drawings
Below in conjunction with drawings and embodiments a kind of bistrique forming method for the blisk polishing of the present invention is described in further detail.
Structure chart when Fig. 1 is grinding head for polishing moulding of the present invention.
Structure vertical view when Fig. 2 is grinding head for polishing moulding of the present invention.
Fig. 3 is the 3-D view of grinding head for polishing mould of the present invention.
Among the figure:
1. mold 2. alignment pins 3. grinding head for polishing 4. hold out against screw 5. pads
The specific embodiment
This example is a kind of bistrique forming method for the blisk polishing, comprises Mould design, the installation of mould, the moulding of bistrique.
Referring to Fig. 1, Fig. 2, Fig. 3, the bistrique forming method of blisk polishing of the present invention is characterized in may further comprise the steps:
The first step: designing mould at first, select for use silicon carbide abrasive and bond resin material to make mold 1;
Second step: the structure concrete according to shaping mould, mold 1 is designed to four layers of step-like cuboid, every layer of ledge surface is rectangle, distributing successively on the step from high to low is provided with the dolioform die cavity of four kinds of size bistriques moulding from small to large, and the dolioform die cavity on every layer of step is measure-alike; Two sidewalls of dolioform die cavity are rectangular surfaces, the length of rectangular surfaces equals the diameter of grinding head for polishing, width is 1/2nd of grinding head for polishing radius, the bottom is the parabola that smoothly joins with rectangular surfaces, the distance of parabolic least significant end and step upper surface equals the radius of grinding head for polishing, parabolic two ends and rectangular surfaces are tangent, and die cavity face and waist drum shape shape face fit like a glove;
The 3rd step: dolioform die cavity evenly distributes along length direction on each layer of mold step surface, and is positioned on the center line of width;
The 4th step: at the two ends of mold, be drilled with screwed hole on the highest and minimum step, and the screwed hole axis is positioned at the symmetrical centre of this layer length of bench and width, screwed hole is used for installation and holds out against screw, installs pad additional holding out against between screw and the mould;
The 5th step: mold bottom center line along its length is provided with two dowel holes, and the dowel hole axis is 1/10th of die width apart from the Edge Distance of mold width;
The 6th step: milling has microgroove on dolioform die cavity concave surface, to increase the rubbing action of dolioform die cavity and grinding head for polishing;
The 7th step: during the installation mold body, mold 1 is placed on the workbench, and the locating hole of mold 1 and the locating hole of workbench are cooperatively interacted by alignment pin 2, that tightens the mold two ends holds out against screw 4, make it to cooperate with screwed hole on the workbench, mold is limited on the workbench; Hold out against screw 4 and be SOC.HD. cap screw, and between mould and screw, used pad 5, to play the effect that tightens up the installation mold body;
The 8th step: during the bistrique moulding, size according to grinding head for polishing 3 is selected corresponding die cavity, rotate grinding head for polishing at a high speed, the axial end that guarantees grinding head for polishing 3 simultaneously is parallel with mold 1 width end face, move horizontally bistrique and make the central lines of its vertical center line and waist drum groove, the grinding head for polishing level of rotation is at a high speed embedded in the dolioform die cavity, the grinding head for polishing that vertically falls and the abrasive grain of dolioform die cavity fully rub, up to grinding head for polishing shape and the identical moulding of dolioform die cavity shape.
The present invention has broken away from traditional manually-operated poor efficiency, the situation of formed precision difference in the grinding head for polishing forming process; The cutter spacing track of control grinding head for polishing, chamfer shape precision height has been avoided ripple not occurring because moulding does not precisely cause the blisk surface; The simple easy operating of the inventive method, structure is quick and easy for installation, has improved the quality of finish of blisk.
Claims (5)
1. one kind is used for the bistrique forming method that blisk polishes, and it is characterized in that: according to forming die structure, it is concrete to select silicon carbide abrasive and resin material to make shaping mould; Mold is four layers of step-like cuboid, every layer of ledge surface is rectangle, set gradually the dolioform die cavity of four kinds of sizes from small to large on the step from high to low, dolioform die cavity evenly distributes along length direction on each layer of mold step surface, and be positioned on the center line of width, the dolioform die cavity on every layer of step is measure-alike; Two sidewalls of dolioform die cavity are rectangular surfaces, and the bottom is the parabola that smoothly joins with rectangular surfaces, and parabolic two ends and rectangular surfaces are tangent; Be drilled with screwed hole on the highest and minimum step at mold two ends, the screwed hole axis is positioned at the symmetrical centre of this layer length of bench and width; The axial end of grinding head for polishing is parallel with mold width end face, the vertical center line of grinding head for polishing and dolioform die cavity central lines.
2. the bistrique forming method of blisk according to claim 1 polishing, it is characterized in that: the length of described rectangular surfaces equals the diameter of grinding head for polishing, and width is 1/2nd of grinding head for polishing radius.
3. the bistrique forming method of blisk according to claim 1 polishing, it is characterized in that: the distance of described parabolic least significant end and step upper surface equals the radius of grinding head for polishing.
4. the bistrique forming method of blisk according to claim 1 polishing, it is characterized in that: described mold bottom center line along its length is provided with two dowel holes, and the dowel hole axis is 1/10th of die width apart from the distance at mold edge.
5. the bistrique forming method of blisk according to claim 1 polishing, it is characterized in that: milling has microgroove on the described dolioform die cavity concave surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110257776 CN102275144B (en) | 2011-09-01 | 2011-09-01 | Grinding head forming method used for polishing blisk |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110257776 CN102275144B (en) | 2011-09-01 | 2011-09-01 | Grinding head forming method used for polishing blisk |
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| Publication Number | Publication Date |
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| CN102275144A CN102275144A (en) | 2011-12-14 |
| CN102275144B true CN102275144B (en) | 2013-08-14 |
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| CN 201110257776 Expired - Fee Related CN102275144B (en) | 2011-09-01 | 2011-09-01 | Grinding head forming method used for polishing blisk |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1473687A (en) * | 2002-08-07 | 2004-02-11 | 康 刘 | Grinding method and device for optic lens |
| CN201183223Y (en) * | 2008-03-01 | 2009-01-21 | 陈龙星 | Portable special whetstone for woodcarving tool bit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130380A (en) * | 1984-07-19 | 1986-02-12 | Toshiba Corp | Preparation of grindstone |
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2011
- 2011-09-01 CN CN 201110257776 patent/CN102275144B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1473687A (en) * | 2002-08-07 | 2004-02-11 | 康 刘 | Grinding method and device for optic lens |
| CN201183223Y (en) * | 2008-03-01 | 2009-01-21 | 陈龙星 | Portable special whetstone for woodcarving tool bit |
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| CN102275144A (en) | 2011-12-14 |
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