CN105397415A - Precision machining method for thin plane of core column assembly - Google Patents
Precision machining method for thin plane of core column assembly Download PDFInfo
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- CN105397415A CN105397415A CN201510864443.XA CN201510864443A CN105397415A CN 105397415 A CN105397415 A CN 105397415A CN 201510864443 A CN201510864443 A CN 201510864443A CN 105397415 A CN105397415 A CN 105397415A
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- grinding
- screw
- stem
- square plate
- endoporus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a precision machining method for a thin plane of a core column assembly. The precision machining method is composed of three steps, i.e., using a ceramic grinding core stick for grinding an inner core, using an adjustable supporting device for carrying out precision turning on a plane, and grinding and polishing the plane. The core column assembly is formed by welding a thin-walled tube part with the wall thickness of 0.2mm to 0.3mm and a square sheet, wherein the length and the width of the square sheet range from 80mm to 100mm, the thickness of the square sheet ranges from 2mm to 2.5mm, and 0.2-0.3mm machining allowance is left. The method has the advantages (1) that the ceramic grinding core stick is used for grinding the inner hole, and positioning precision of a part and geometric precision of the machined plane are improved; (2) an adjustable support is used for removing vibration during machining, and the surface quality of the part is improved; and (3) a sealed absorption manner is used and no clamping force exists in the machining process, so that the subsequent deformation of residual stress to the part is reduced.
Description
Technical field
The present invention relates to a kind of precision machining method of part thin, planar, particularly a kind of Precision Machining is used for the method for the stem stem assembly thin, planar of space remote sensing telemetry system.
Background technology
In field of machining, accurate processing often will be carried out to the important plane on some vital parts, when these important planes are in thin type sheet structure, then because of the reason of intensity, the machining accuracy that very difficult acquisition is higher, as the stem stem assembly of vital part in space remote sensing telemetry system, in the process of processing plane, just run into distortion, the puzzlement of the problems such as vibration.Traditional processing method only the endoporus on stem stem assembly to be inserted in after Small Taper plug just direct processing plane.This processing method had both caused plane outer rim because of distortion higher than core, cannot overcome again the vibration in process, even also often can occur the situation that part and plug part mutually rotate and make part inwall impaired.As by traditional processing method, want to reach higher precision, more grind can only be left, and add the mode of manual local reconditioning just likely with grinding, therefore the production efficiency of this method and yield rate all lower.
Summary of the invention
In view of the many disadvantages of traditional processing method, the object of the present invention is a kind of method providing energy Precision Machining thin, planar, namely improve the positioning precision of part by endoporus on ceramic grinding plug grinding stem stem assembly, by using four adjustable supports screw 4-3 to the support of thin, planar, enhance the antidetonation in process of part and the ability of resistance to deformation, avoid the deformation and vibration in process, improve the surface quality of part.Drive stem stem assembly to rotate with lathe spindle by rotation stopping screw 4-2, avoid the relative rotation of traditional lathe for machining main shaft and part.By using the envelope gas screw 3-14 that screws with gasket seal and smearing lubricating grease at inner bore of part, part is made to be processed to form the mounting means of sealing absorption, in process, there is no clamping force, this reduces the deformation after unloading that residual stress causes part.
A kind of high accuracy processing method of stem stem assembly thin, planar: it is by step one: with blind hole ceramic grinding plug inner bore grinding; Step 2: use adjustable support to carry out precision turning processing to plane, step 3: grinding and these three step compositions of reconditioning plane.
Described step one: with ceramic grinding plug grinding stem stem assembly endoporus
Stem stem assembly wherein there is endoporus 1-1, square plate side 1-2, square plate end face 1-3.Inner bore grinding 1-1 method is as follows: diamond or the carborundum abrasive sand of coating specification W10-W20 in ceramic core rod, ceramic core rod is put into the endoporus 1-1 of stem stem assembly 1, the gap of ceramic grinding plug and endoporus 1-1 is 0.01-0.02mm, by grinding endoporus 1-1, within making the deviation from cylindrical form of endoporus 1-1 reach 0.006mm.
Because ceramic grinding plug material is hard, therefore in process of lapping, the loss of himself is minimum, this guarantees the high accuracy of grinding.
Step 2: use adjustable support to carry out rough turning processing to plane
Adjustable support used is primarily of clamping disk 2, and keeper 3 and adjustable supports screw base 4 formed.Clamping disk 2 there is step for the clamping of jig; Keeper 3 is arranged on clamping disk 2 by screw, it has envelope gas screw 3-1, the location mandril 3-2 and passage 3-3 of band rubber sheet gasketing, and its middle part has one section of external screw thread to be used to connect adjustable supports screw base 4; The left end of adjustable supports screw base 4 has one section of internal thread, the external screw thread being used to location mandril 3-2 matches, centre is cylindric changeover portion, right-hand member is adjustable supports screw mounting flange 4-1, it there is the rotation stopping screw 4-2 of M5 or M8, position is positioned at any outside 5-8mm on one side of square plate, and distance corner 10-15mm, separately has four adjustable supports screw 4-3.Position is in the corner place also distance four limit 5-10mm of stem stem assembly square plate;
Adjustable support is used to be followed successively by the process that plane carries out turnery processing: first to unclamp the envelope gas screw 3-1 on keeper 3, and endoporus 1-1 smears lubricating grease in porch on stem stem assembly 1, then endoporus 1-1 on stem stem assembly 1 is allocated into the location mandril 3-2 on keeper 3, stem stem assembly 1 left end is made to contact keeper 3, and make square plate side 1-2 on stem stem assembly 1 contact the rotation stopping screw 4-2 on adjustable supports screw base 4, screw envelope gas screw 3-1; Gasket seal on it is played and intercepts using of air.Rotate four the adjustable supports screw 4-3 be installed in the upper right end flanges of adjustable supports screw base 4 again, make the square plate of spherical tips top to stem stem assembly of adjustable supports screw 4-3, touch square plate end face 1-3 with amesdial, control the square plate amount of ejecting within 0.005mm.
Last when turning square plate end face 1-3, select the rotating speed of 80-100 rev/min, the rough turn cutting depth selecting 0.1-0.15mm, the amount of feeding is 0.06-0.12mm, last finish turning selects the cutting depth of 0.02-0.05mm, the amount of feeding is 0.04-0.08mm, and makes total length leave the reconditioning surplus of 0.01-0.02mm.Tool orthogonal rake selects 20 °-25 °, and tool cutting edge angle selects 30 °-45 °.When carrying out turning, lower cutter is in decentre 3-5mm place, and then to center feeding, turning is outwards carried out in Zai Cong center.Unscrew sealing screw 3-1 after turning completes, take out the part processed.
The operation principle of this adjustable support is the sealing utilizing air, makes the endoporus of stem stem assembly being adsorbed on the location mandril of fixture tightly, then drives stem stem assembly to rotate with lathe spindle by rotation stopping screw on fixture.
Step 3: grinding and reconditioning plane
The stem stem assembly square plate end face 1-3 first utilizing grinding flat plate turning to be completed grinds, and after grinding off turning tool marks, then puts it on high accuracy ruby oilstone and carries out reconditioning, to remove abrasive sand and to obtain high plane quality.The high accuracy of described ruby oilstone high accuracy ground flat utilizes diamond lap sand to obtain through grinding.
Beneficial effect of the present invention:
[1] with ceramic grinding plug inner bore grinding, improve the positioning precision of part and the geometric accuracy of processed plane; [2] use adjustable supports, eliminate the vibration adding man-hour, improve the surface quality of part; [3] use the mode of sealing absorption, in process, there is no clamping force, this reduces the deformation after unloading that residual stress causes part; [4] by ruby oilstone carrys out reconditioning part plane through the plane that high accuracy is ground, the thin, planar of stem stem assembly can be made to obtain high surface quality.
Its endoporus deviation from cylindrical form of part processed with the inventive method is within 0.004-0.008mm, the error of perpendicularity of endoporus and plane is between 0.015-0.025mm, its flatness can reach 0.004-0.006mm, surface roughness can reach less than 0.08, the qualification rate of product can reach more than 95% from less than 50%, greatly improves work.
Accompanying drawing explanation
Fig. 1 is stem stem assembly elevation cross-sectional view to be processed;
Fig. 2 is stem stem assembly left view to be processed;
Fig. 3 is the elevation cross-sectional view of adjustable support and installation.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail: a kind of high accuracy processing method of stem stem assembly thin, planar: it is by step one: with blind hole ceramic grinding plug inner bore grinding; Step 2: use adjustable support to carry out precision turning processing to plane, step 3: grinding and these three step compositions of reconditioning plane.
Step (one) is with ceramic grinding plug grinding stem stem assembly endoporus
Stem stem assembly wherein there is endoporus 1-1, square plate side 1-2, square plate end face 1-3.Inner bore grinding 1-1 is endoporus 1-1 ceramic core rod being put into stem stem assembly 1, and the gap of ceramic grinding plug and endoporus 1-1 is at 0.01-0.02mm.After the diamond coating specification W10-W20 or carborundum abrasive sand, by grinding endoporus 1-1, within making the deviation from cylindrical form of endoporus 1-1 reach 0.006mm.
Because ceramic grinding plug material is hard, therefore in process of lapping, the loss of himself is minimum, this guarantees the high accuracy of grinding.
Step (two) uses adjustable support to carry out rough turning processing to plane
Adjustable support wherein used is primarily of clamping disk 2, and keeper 3 and adjustable supports screw base 4 formed.Clamping disk 2 there is step for the clamping of jig; Keeper 3 is arranged on clamping disk 2 by screw, it has envelope gas screw 3-1, the location mandril 3-2 and passage 3-3 of band rubber sheet gasketing, and its middle part has one section of external screw thread to be used to connect adjustable supports screw base 4; The left end of adjustable supports screw base 4 has one section of internal thread, the external screw thread being used to location mandril 3-2 matches, centre is cylindric changeover portion, right-hand member is adjustable supports screw mounting flange 4-1, it there is the rotation stopping screw 4-2 of a M5, position is positioned at any outside 5-8mm on one side of square plate, and distance corner 10-15mm, separately has four adjustable supports screw 4-3.Position is in the corner place also distance four limit 5-10mm of stem stem assembly square plate;
Adjustable support is used to be followed successively by the process that plane carries out turnery processing: first to unclamp the envelope gas screw 3-1 on keeper 3, and endoporus 1-1 smears lubricating grease in porch on stem stem assembly 1, then endoporus 1-1 on stem stem assembly 1 is allocated into the location mandril 3-2 on keeper 3, stem stem assembly 1 left end is made to contact keeper 3, and make square plate side 1-2 on stem stem assembly 1 contact the rotation stopping screw 4-2 on adjustable supports screw base 4, screw envelope gas screw 3-1; Gasket seal on it is played and intercepts using of air.Rotate four the adjustable supports screw 4-3 be installed in the upper right end flanges of adjustable supports screw base 4 again, make the square plate of spherical tips top to stem stem assembly of adjustable supports screw 4-3, touch square plate end face 1-3 with amesdial, control the square plate amount of ejecting within 0.005mm.
Last when turning square plate end face 1-3, select the rotating speed of 80-100 rev/min, the rough turn cutting depth selecting 0.1-0.15mm, the amount of feeding is 0.06-0.12mm, last finish turning selects the cutting depth of 0.02-0.05mm, the amount of feeding is 0.04-0.08mm, and makes total length leave the reconditioning surplus of 0.01-0.02mm.Tool orthogonal rake selects 20 °-25 °, and tool cutting edge angle selects 30 °-45 °.When carrying out turning, lower cutter is in decentre 3-5mm place, and then to center feeding, turning is outwards carried out in Zai Cong center.Unscrew sealing screw 3-1 after turning completes, take out the part processed.
Step (three) grinding and reconditioning plane
The stem stem assembly square plate end face 1-3 first utilizing grinding flat plate turning to be completed grinds, and after grinding off turning tool marks, then puts it on high accuracy ruby oilstone and carries out reconditioning, to remove abrasive sand and to obtain high plane quality.The high accuracy of described ruby oilstone high accuracy ground flat utilizes diamond lap sand to obtain through grinding.
This completes the high accuracy process of whole stem stem assembly thin, planar.
Claims (1)
1. a precision machining method for stem stem assembly thin, planar, is characterized in that comprising the following steps:
Step one: with ceramic grinding plug grinding stem stem assembly endoporus
Described stem stem assembly there is endoporus (1-1), square plate side (1-2), square plate end face (1-3), inner bore grinding (1-1) method is as follows: diamond or the carborundum abrasive sand of coating specification W10-W20 in ceramic core rod, ceramic core rod is put into the endoporus (1-1) of stem stem assembly (1), the gap of ceramic grinding plug and endoporus (1-1) is 0.01-0.02mm, by grinding endoporus (1-1), within making the deviation from cylindrical form of endoporus (1-1) reach 0.006mm;
Step 2: use adjustable support to carry out rough turning processing to plane
Described adjustable support comprises clamping disk (2), and keeper (3) and adjustable supports screw base (4), clamping disk (2) has step for the clamping of jig; Keeper (3) is arranged on clamping disk (2) by screw, it has the envelope gas screw (3-1) of band rubber sheet gasketing, location mandril (3-2) and passage (3-3), its middle part has one section of external screw thread to be used to connect adjustable supports screw base (4); The left end of adjustable supports screw base (4) has one section of internal thread, match with the external screw thread of location mandril (3-2), centre is cylindric changeover portion, right-hand member is adjustable supports screw mounting flange (4-1), it there is the rotation stopping screw (4-2) of M5 or M8, any outside 5-8mm on one side of positional distance square plate, distance square plate corner 10-15mm, separately have four adjustable supports screws (4-3), position is in the corner place also distance four limit 5-10mm of stem stem assembly square plate;
Adjustable support is used to be followed successively by the process that plane carries out turnery processing: first to unclamp the envelope gas screw (3-1) on keeper (3), and smear lubricating grease in upper endoporus (1-1) porch of stem stem assembly (1), then upper for stem stem assembly (1) endoporus (1-1) is allocated into the location mandril (3-2) on keeper (3), stem stem assembly (1) left end is made to contact keeper (3), and make stem stem assembly (1) above contact the rotation stopping screw (4-2) on adjustable supports screw base (4) in square plate side (1-2), screw envelope gas screw (3-1), gasket seal on it is played and intercepts using of air.Rotate four the adjustable supports screws (4-3) be installed in adjustable supports screw base (4) upper right end flanges again, make the square plate of spherical tips top to stem stem assembly of adjustable supports screw (4-3), touch square plate end face (1-3) with amesdial, control the square plate amount of ejecting within 0.005mm;
Last when turning square plate end face (1-3), select the rotating speed of 80-100 rev/min, the rough turn cutting depth selecting 0.1-0.15mm, the amount of feeding is 0.06-0.12mm, last finish turning selects the cutting depth of 0.02-0.05mm, the amount of feeding is 0.04-0.08mm, and makes total length leave the reconditioning surplus of 0.01-0.02mm; Tool orthogonal rake selects 20 °-25 °, and tool cutting edge angle selects 30 °-45 °.When carrying out turning, lower cutter is in decentre 3-5mm place, and then to center feeding, turning is outwards carried out in Zai Cong center, unscrews sealing screw (3-1) after turning completes, and takes out the part processed;
Step 3: grinding and reconditioning plane
Stem stem assembly square plate end face (1-3) first utilizing grinding flat plate turning to be completed grinds, and after grinding off turning tool marks, then puts it on high accuracy ruby oilstone and carries out reconditioning, removes abrasive sand and also obtains high plane quality.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510864443.XA CN105397415A (en) | 2015-12-01 | 2015-12-01 | Precision machining method for thin plane of core column assembly |
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| CN201510864443.XA CN105397415A (en) | 2015-12-01 | 2015-12-01 | Precision machining method for thin plane of core column assembly |
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Cited By (3)
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| CN105710682A (en) * | 2016-05-11 | 2016-06-29 | 程彬彬 | Shaft part fixture |
| CN107790973A (en) * | 2017-10-31 | 2018-03-13 | 中信戴卡股份有限公司 | One kind is used for the mach method of aluminium alloy wheel hub flange face |
| CN107914113A (en) * | 2017-10-31 | 2018-04-17 | 中信戴卡股份有限公司 | One kind is used for the mach method of aluminium alloy wheel hub flange face |
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| DE102013002439A1 (en) * | 2013-02-06 | 2014-08-07 | Asia Vital Components Co., Ltd. | Method for manufacturing planar thin heat pipe for cooling CPUs, involves pressing pipe thin by mechanical processing, completely adhering capillary structure at inner wall of pipe, evacuating pipe, filling pipe with fluid, and closing pipe |
| CN203993198U (en) * | 2014-07-24 | 2014-12-10 | 沃得精机(中国)有限公司 | The protruding semicircle groove face of job key vehicle clamper |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105710682A (en) * | 2016-05-11 | 2016-06-29 | 程彬彬 | Shaft part fixture |
| CN107790973A (en) * | 2017-10-31 | 2018-03-13 | 中信戴卡股份有限公司 | One kind is used for the mach method of aluminium alloy wheel hub flange face |
| CN107914113A (en) * | 2017-10-31 | 2018-04-17 | 中信戴卡股份有限公司 | One kind is used for the mach method of aluminium alloy wheel hub flange face |
| CN107790973B (en) * | 2017-10-31 | 2019-10-29 | 中信戴卡股份有限公司 | One kind being used for the mach method of aluminium alloy wheel hub flange face |
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