CN102294569A - Processing technic of small-diameter thin-wall deep-hole high-accuracy part and special grinding tool applied to same - Google Patents

Processing technic of small-diameter thin-wall deep-hole high-accuracy part and special grinding tool applied to same Download PDF

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Publication number
CN102294569A
CN102294569A CN2010102056643A CN201010205664A CN102294569A CN 102294569 A CN102294569 A CN 102294569A CN 2010102056643 A CN2010102056643 A CN 2010102056643A CN 201010205664 A CN201010205664 A CN 201010205664A CN 102294569 A CN102294569 A CN 102294569A
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China
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endoporus
grinding
bistrique
deep hole
wall deep
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CN2010102056643A
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武晓燕
闫明春
赵源东
高立栋
张明
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Harbin Jiancheng Group Co Ltd
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Harbin Jiancheng Group Co Ltd
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Abstract

The invention discloses a processing technic of a small-diameter thin-wall deep-hole high-accuracy part and a special grinding tool applied to the same, which relate to a processing technic of a thin-wall deep-hole high-accuracy part and a special grinding tool applied to the same and are used for solving the problems that the design requirement of cylinder parts is difficult to meet and processing is difficult existing in the conventional machining method. The processing technic comprises the following process steps of: turning the outer circle and the end face of a blank and drilling a first inner hole and a second inner hole layer after layer in a stepped increasing way; and rotating a motor on a tailstock of a universal grinder to drive a lengthened tool shank and a grinding head to rotate, revolve a part at a low speed relative to the grinding head, turn the part with the grinding head and finish part processing. The tail end of the lengthened tool shank of the grinding tool has a Morse taper structure, the grinding head is fixedly arranged at the head end of the lengthened tool shank and is made of white jade, and the lengthened tool shank is made of alloy tool steel. The processing technic is particularly suitable for a manufacturing technic technology of the small-diameter thin-wall deep-hole high-accuracy part in the machining field.

Description

The processing technology of minor diameter thin wall deep hole high-precision part and special-purpose grinding tool thereof
Technical field
The present invention relates to a kind of processing technology and special-purpose grinding tool thereof of thin wall and deep hole high-precision part, belong to the mechanical processing technique technical field.
Background technology
Cylinder parts is a lot, and especially chord mechanism cylinder body is one of representative part of cylinder body class.Cylinder body is minor diameter, thin-walled, deep hole part, and endoporus machining accuracy height (seeing accompanying drawing 1), and cylinder body can be met a lot of problems adding man-hour, adopts conventional machining process to realize difficulty, is difficult to reach designing requirement.Knife bar was carefully grown when the most outstanding characteristics were turning, and hole wall is thin, and arbor stiffness is poor, and intensity is low, is easy to generate bigger vibration and cutter relieving phenomenon, and produced coning error, badly influenced the roughness and the precision of workpiece hole wall; Because the hole depth cooling fluid is difficult for into, the chip removal difficulty is often drawn bad hole wall because of obstruction, makes the tool wear aggravation, reduces cutter life; Cutter cuts precision and the roughness that can not intuitively process and is difficult to control in deep hole; Ripple often appears in turnover place of deep hole, horn mouth, and the turning linearity is poor, and machining accuracy is reduced; Axially bored line is crooked easily during deep hole machining, and drill bit draws easily partially in the drilling.
Summary of the invention
The objective of the invention is in order to solve the designing requirement of adopting the conventional inaccessible cylinder parts of machining process and the problem of processing difficulties, and then a kind of processing technology and special-purpose grinding tool thereof of minor diameter thin wall deep hole high-precision part are provided.
The step of the processing technology of minor diameter thin wall deep hole high-precision part of the present invention is:
Step 1, blank material are selected round steel for use, utilize the process of turning that the blank cylindrical is processed, and part both sides end face car is flat, guarantee the Element Design total length, and respectively at end face center, both sides centering; On lathe, adopt the installation way of the centre bore that holds out against the bilateral end face, size is beaten table centering with dial gauge to intended diameter in turning process, guarantee that the linearity of cylindrical is less than or equal to 0.005mm, and axiality is less than or equal to 0.005mm;
Step 2, turning endoporus, on lathe, clamp part with three-jaw chuck, with centre frame support part cylindrical, tail stock clamping lengthening drill bit, the employing ladder is laddering, successively drills through first endoporus and second endoporus, guarantees that first endoporus is drilled into the design hole depth, the diameter of first endoporus leaves the Vehicle Processing surplus of 1～2mm, and the diameter of second endoporus leaves the Vehicle Processing surplus of 1～2mm; Rough turn then finish turning first endoporus and the second endoporus aperture, the diameter of first endoporus leaves the grinding allowance of 0.15～0.20mm, and the diameter of second endoporus leaves the grinding allowance of 0.15～0.20mm, and turning process uses cutting fluid;
Step 3, grinding endoporus, the equipment choosing grinding machine of universal, jaw is clipped in the little internal diameter position of part, the centre frame frame at place, part middle part, is fixed on the Grinder bench, beats the two ends and the part centre position of part endoporus with the lengthening scriber, the centering part position, guarantee that part endoporus first endoporus and the second endoporus axiality are 0.002mm, behind the centering, part is clamped; Grinding tool is installed on the grinding machine of universal tailstock; Rotation by the motor on the grinding machine of universal tailstock, driving lengthening handle of a knife and bistrique rotates, the bistrique rotating speed is 6000n/min～7000n/min, the relative bistrique of part is done the low speed gyration, and the part rotating speed is 80n/min～120n/min, and bistrique carries out one-sided grinding to first endoporus and second endoporus of part, adopt grinding fluid in the grinding process, the grinding fluid dilute with water, the mass percent of grinding fluid is 5% in the grinding mixed liquor after the dilution, finishes the deep hole machining of part.
The grinding tool that is used to realize the processing of minor diameter thin wall deep hole high-precision part of the present invention, described grinding tool is made up of bistrique and lengthening handle of a knife, the tail end of described lengthening handle of a knife adopts the Morse tapered configuration, and bistrique is fixedly mounted on the head end of lengthening handle of a knife, bistrique and the coaxial setting of lengthening handle of a knife; Described bistrique is cylindrical bistrique, and bistrique is made by white jade steel, and the granularity of bistrique is 60 #～80 #, soft during hardness level is elected as, the outside dimension of bistrique is than the little 1～2mm of diameter of second endoporus of part, and the lengthening handle of a knife is made by alloy tool steel, and effective active length of lengthening handle of a knife is 210mm.
The present invention compared with prior art has following beneficial effect: processing technology of the present invention has realized that diameter of bore is more than or equal to φ 20mm, tolerance is more than or equal to 0.022mm, axiality requires more than or equal to 0.02mm, the wall thickness difference is more than or equal to 4.5mm, the Element Design total length is less than or equal to 216mm, and inner bore surface roughness requires the minor diameter thin wall deep hole precision of 0.8 μ m, the machining of the high part of roughness.Processing technology of the present invention is particularly useful in the manufacturing process technology of high strength alloy steel (30CrMnSiA) minor diameter thin wall deep hole high-precision part in the field of machining.
Description of drawings
Fig. 1 is that the master of minor diameter thin wall deep hole high-precision part looks cutaway view, and Fig. 2 is that grinding tool of the present invention is installed in the front view on the grinding machine of universal tailstock 5.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, the step of the processing technology of the minor diameter thin wall deep hole high-precision part of present embodiment is:
Step 1, blank material are selected round steel for use, utilize the process of turning that the blank cylindrical is processed, and part both sides end face car is flat, guarantee Element Design total length H 1, and respectively at end face center, both sides centering; On lathe, adopt the installation way of the centre bore that holds out against the bilateral end face, size is to intended diameter D 3, in turning process, beat the table centering with dial gauge, guarantee that the linearity of cylindrical is less than or equal to 0.005mm, axiality is less than or equal to 0.005mm;
Step 2, turning endoporus clamp part with three-jaw chuck on lathe, with centre frame support part cylindrical, tail stock clamping lengthening drill bit, adopt ladder laddering, successively drill through first endoporus 1 and second endoporus 2, guarantee that first endoporus 1 is drilled into design hole depth H 2, the diameter D of first endoporus 1 1Leave the Vehicle Processing surplus of 1～2mm, the diameter D of second endoporus 2 2Leave the Vehicle Processing surplus of 1～2mm; Rough turn then finish turning first endoporus 1 and second endoporus, 2 apertures, the diameter D of first endoporus 1 1Leave the grinding allowance of 0.15～0.20mm, the diameter D of second endoporus 2 2Leave the grinding allowance of 0.15～0.20mm, turning process uses cutting fluid;
Step 3, grinding endoporus, the equipment choosing grinding machine of universal, jaw is clipped in the K place, little internal diameter position of part, the centre frame frame at F place, part middle part, is fixed on the Grinder bench, beats the two ends and the part centre position of part endoporus with the lengthening scriber, the centering part position, guarantee that part endoporus first endoporus 1 and second endoporus, 2 axialities are 0.002mm, behind the centering, part is clamped; Grinding tool is installed on the grinding machine of universal tailstock 5; Rotation by the motor on the grinding machine of universal tailstock 5, drive lengthening handle of a knife 4 and bistrique 3 rotations, bistrique 3 rotating speeds are 6000n/min～7000n/min, the relative bistrique 3 of part is done the low speed gyration, and the part rotating speed is 80n/min～120n/min, and first endoporus 1 of 3 pairs of parts of bistrique and second endoporus 2 carry out one-sided grinding, adopt grinding fluid in the grinding process, the grinding fluid dilute with water, the mass percent of grinding fluid is 5% in the grinding mixed liquor after the dilution, finishes the deep hole machining of part.
Rough turn employing in the step 2 of present embodiment be prior art processes.
The specific embodiment two: what present embodiment and the specific embodiment one were different is: the jaw of the three-jaw chuck in the step 2 is wrapped with flake aluminum.Prevent that jaw from acting directly on the part cylindrical, destroy the fineness of piece surface.
The specific embodiment three: what present embodiment was different with the specific embodiment one or two is: when rough turn, selecting relief angle for use is 4 °～6 ° internal lathe-tools in the step 2, and during finish turning, selecting relief angle for use is 8 °～12 ° internal lathe-tool.To reduce the friction between back knife face and the part, avoid heat in metal cutting to increase, improve surface roughness; Anterior angle should be increased during the finish turning endoporus, make the lathe tool cutting edge sharp, distortion and friction reduce, and produce the few cutting temperature of heat and descend, and can make cutting laborsaving and smear metal is discharged smoothly.
The specific embodiment four: what present embodiment and the specific embodiment one, two or three were different is: during finish turning, lathe tool is on the occasion of the cutting edge inclination lathe tool in the step 2.Smear metal is arranged to work surface in order to avoid scratch the plucking machined surface.
The specific embodiment five: what present embodiment and the specific embodiment one, two, three or four were different is: during finish turning, the corner radius of lathe tool is 0.25mm in the step 2.Tool arc increases and more easily causes vibration.
The specific embodiment six: what present embodiment and the specific embodiment one, two, three, four or five were different is: the cutting fluid that adopts in the step 2 is the multifunctional emulsified oil of T.Good stability, cooling property is good, lubricity is good.
The specific embodiment seven: what present embodiment and the specific embodiment one, two, three, four, five or six were different is: the jaw in the step 3 is wrapped with flake aluminum.Prevent that jaw from acting directly on the part cylindrical, destroy the fineness of piece surface.
The specific embodiment eight: what present embodiment and the specific embodiment one, two, three, four, five, six or seven were different is: bistrique 3 rotating speeds in the step 3 are 6500n/min, the relative bistrique 3 of part is done the low speed gyration, the part rotating speed is 100n/min, to reach best grinding quality.
The specific embodiment nine: what present embodiment and the specific embodiment one, two, three, four, five, six, seven or eight were different is: grinding fluid is the WH-86 grinding fluid in the step 3.Cooling property is good, has cleaning performance and greasy property concurrently.
The specific embodiment ten: the grinding tool that is used to realize the processing of minor diameter thin wall deep hole high-precision part, described grinding tool is made up of bistrique 3 and lengthening handle of a knife 4, the tail end of described lengthening handle of a knife 4 adopts the Morse tapered configuration, bistrique 3 is fixedly mounted on the head end of lengthening handle of a knife 4, bistrique 3 and the 4 coaxial settings of lengthening handle of a knife; Described bistrique 3 is cylindrical bistrique, and bistrique 3 is made by white jade steel, and the granularity of bistrique 3 is 60 #～80 #, soft during hardness level is elected as, the outside dimension D of bistrique 3 4Diameter D than second endoporus 2 of part 2Little 1～2mm, lengthening handle of a knife 4 is made by alloy tool steel, and effective active length L of lengthening handle of a knife 4 is 210mm.Other is identical with the specific embodiment one, two, three, four, five, six, seven, eight or nine.

Claims (10)

1. the processing technology of minor diameter thin wall deep hole high-precision part, it is characterized in that: the step of processing technology is:
Step 1, blank material are selected round steel for use, utilize the process of turning that the blank cylindrical is processed, and part both sides end face car is flat, guarantee Element Design total length (H 1), and respectively at end face center, both sides centering; On lathe, adopt the installation way of the centre bore that holds out against the bilateral end face, size is to intended diameter (D 3), in turning process, beat the table centering with dial gauge, guarantee that the linearity of cylindrical is less than or equal to 0.005mm, axiality is less than or equal to 0.005mm;
Step 2, turning endoporus clamp part with three-jaw chuck on lathe, with centre frame support part cylindrical, tail stock clamping lengthening drill bit, the employing ladder is laddering, successively drills through first endoporus (1) and second endoporus (2), guarantees that first endoporus (1) is drilled into design hole depth (H 2), the diameter (D of first endoporus (1) 1) leave the Vehicle Processing surplus of 1～2mm, the diameter (D of second endoporus (2) 2) leave the Vehicle Processing surplus of 1～2mm; Rough turn then finish turning first endoporus (1) and second endoporus (2) aperture, the diameter (D of first endoporus (1) 1) leave the grinding allowance of 0.15～0.20mm, the diameter (D of second endoporus (2) 2) leaving the grinding allowance of 0.15～0.20mm, turning process uses cutting fluid;
Step 3, grinding endoporus, the equipment choosing grinding machine of universal, the little internal diameter position (K) that jaw is clipped in part is located, the centre frame frame is located at part middle part (F), be fixed on the Grinder bench, beat the two ends and the part centre position of part endoporus with the lengthening scriber, the centering part position, guarantee that part endoporus first endoporus (1) and second endoporus (2) axiality are 0.002mm, behind the centering, part is clamped; Grinding tool is installed on the grinding machine of universal tailstock (5); Rotation by the motor on the grinding machine of universal tailstock (5), driving lengthening handle of a knife (4) and bistrique (3) rotates, bistrique (3) rotating speed is 6000n/min～7000n/min, the relative bistrique of part (3) is done the low speed gyration, the part rotating speed is 80n/min～120n/min, bistrique (3) carries out one-sided grinding to first endoporus (1) and second endoporus (2) of part, adopt grinding fluid in the grinding process, the grinding fluid dilute with water, the mass percent of grinding fluid is 5% in the grinding mixed liquor after the dilution, finishes the deep hole machining of part.
2. the processing technology of minor diameter thin wall deep hole high-precision part according to claim 1 is characterized in that: the jaw of the three-jaw chuck in the step 2 is wrapped with flake aluminum.
3. the processing technology of minor diameter thin wall deep hole high-precision part according to claim 1 and 2 is characterized in that: when rough turn, selecting relief angle for use is 4 °～6 ° internal lathe-tools in the step 2, and during finish turning, selecting relief angle for use is 8 °～12 ° internal lathe-tool.
4. the processing technology of minor diameter thin wall deep hole high-precision part according to claim 1 and 2 is characterized in that: during finish turning, lathe tool is on the occasion of the cutting edge inclination lathe tool in the step 2.
5. the processing technology of minor diameter thin wall deep hole high-precision part according to claim 1 and 2 is characterized in that: during finish turning, the corner radius of lathe tool is 0.25mm in the step 2.
6. the processing technology of minor diameter thin wall deep hole high-precision part according to claim 1 and 2 is characterized in that: the cutting fluid that adopts in the step 2 is the multifunctional emulsified oil of T.
7. the processing technology of minor diameter thin wall deep hole high-precision part according to claim 1 and 2 is characterized in that: the jaw in the step 3 is wrapped with flake aluminum.
8. the processing technology of minor diameter thin wall deep hole high-precision part according to claim 1 and 2 is characterized in that: the bistrique in the step 3 (3) rotating speed is 6500n/min, and the relative bistrique of part (3) is done the low speed gyration, and the part rotating speed is 100n/min.
9. the processing technology of minor diameter thin wall deep hole high-precision part according to claim 1 and 2 is characterized in that: grinding fluid is the WH-86 grinding fluid in the step 3.
10. for the grinding tool of the processing technology that realizes the described minor diameter thin wall deep hole of claim 1 high-precision part, it is characterized in that: described grinding tool is made up of bistrique (3) and lengthening handle of a knife (4), the tail end of described lengthening handle of a knife (4) adopts the Morse tapered configuration, bistrique (3) is fixedly mounted on the head end of lengthening handle of a knife (4), bistrique (3) and the coaxial setting of lengthening handle of a knife (4); Described bistrique (3) is cylindrical bistrique, and bistrique (3) is made by white jade steel, and the granularity of bistrique (3) is 60 #～80 #, soft during hardness level is elected as, the outside dimension (D of bistrique (3) 4) than the diameter (D of second endoporus (2) of part 2) little 1～2mm, lengthening handle of a knife (4) is made by alloy tool steel, and effective active length (L) of lengthening handle of a knife (4) is 210mm.
CN2010102056643A 2010-06-22 2010-06-22 Processing technic of small-diameter thin-wall deep-hole high-accuracy part and special grinding tool applied to same Pending CN102294569A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103121109A (en) * 2013-02-05 2013-05-29 安庆市佰联无油压缩机有限公司 Small-diameter air cylinder sleeve machining technology and dedicated device thereof
CN104400369A (en) * 2014-09-24 2015-03-11 西安泰富西玛电机有限公司 Processing technology for bearing chamber inner circles of two ends of stator inner cylinder
CN104607874A (en) * 2014-12-15 2015-05-13 遵义市遵云制冷配件有限公司 Machining process of ultra-long cylindrical thin-wall part
CN105171543A (en) * 2015-08-31 2015-12-23 自贡中兴耐磨新材料有限公司 Machining device and machining method of forming hole
CN105234623A (en) * 2015-10-16 2016-01-13 安徽科达埃尔压缩机有限公司 Axis seeking method for old shaft of centrifugal blower
CN105922090A (en) * 2016-04-27 2016-09-07 中航动力株洲航空零部件制造有限公司 Grinding wheel rod for high precision inner hole processing and processing method
CN106392870A (en) * 2016-12-15 2017-02-15 东旭科技集团有限公司 Grinding tool
CN109551308A (en) * 2018-12-04 2019-04-02 中国航发贵州红林航空动力控制科技有限公司 A kind of processing method of high-precision valve component
CN109623648A (en) * 2019-01-03 2019-04-16 武汉船用机械有限责任公司 The clamping tooling and processing method of axial workpiece
CN109692962A (en) * 2018-12-29 2019-04-30 武汉新锐合金工具有限公司 A kind of hard alloy thin-wall part production technology
CN110757094A (en) * 2019-10-31 2020-02-07 中航飞机起落架有限责任公司 Turning method of cylindrical stepped thin-wall part
CN111872631A (en) * 2020-05-29 2020-11-03 贵州新安航空机械有限责任公司 Machining method for deep-hole slender shaft parts
CN115213643A (en) * 2022-08-23 2022-10-21 无锡市润和机械有限公司 Method for machining overlong hollow reducing high-precision rotor shaft of aero-engine

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103121109B (en) * 2013-02-05 2015-05-06 安庆市佰联无油压缩机有限公司 Small-diameter air cylinder sleeve machining technology and dedicated device thereof
CN103121109A (en) * 2013-02-05 2013-05-29 安庆市佰联无油压缩机有限公司 Small-diameter air cylinder sleeve machining technology and dedicated device thereof
CN104400369A (en) * 2014-09-24 2015-03-11 西安泰富西玛电机有限公司 Processing technology for bearing chamber inner circles of two ends of stator inner cylinder
CN104607874A (en) * 2014-12-15 2015-05-13 遵义市遵云制冷配件有限公司 Machining process of ultra-long cylindrical thin-wall part
CN105171543A (en) * 2015-08-31 2015-12-23 自贡中兴耐磨新材料有限公司 Machining device and machining method of forming hole
CN105234623A (en) * 2015-10-16 2016-01-13 安徽科达埃尔压缩机有限公司 Axis seeking method for old shaft of centrifugal blower
CN105922090B (en) * 2016-04-27 2019-09-20 中航动力株洲航空零部件制造有限公司 Pole wheel and processing method for high precision inner-pore processing
CN105922090A (en) * 2016-04-27 2016-09-07 中航动力株洲航空零部件制造有限公司 Grinding wheel rod for high precision inner hole processing and processing method
CN106392870A (en) * 2016-12-15 2017-02-15 东旭科技集团有限公司 Grinding tool
CN109551308A (en) * 2018-12-04 2019-04-02 中国航发贵州红林航空动力控制科技有限公司 A kind of processing method of high-precision valve component
CN109551308B (en) * 2018-12-04 2020-08-11 中国航发贵州红林航空动力控制科技有限公司 Machining method of high-precision valve assembly
CN109692962A (en) * 2018-12-29 2019-04-30 武汉新锐合金工具有限公司 A kind of hard alloy thin-wall part production technology
CN109623648A (en) * 2019-01-03 2019-04-16 武汉船用机械有限责任公司 The clamping tooling and processing method of axial workpiece
CN109623648B (en) * 2019-01-03 2020-03-17 武汉船用机械有限责任公司 Processing method of shaft parts
CN110757094A (en) * 2019-10-31 2020-02-07 中航飞机起落架有限责任公司 Turning method of cylindrical stepped thin-wall part
CN111872631A (en) * 2020-05-29 2020-11-03 贵州新安航空机械有限责任公司 Machining method for deep-hole slender shaft parts
CN115213643A (en) * 2022-08-23 2022-10-21 无锡市润和机械有限公司 Method for machining overlong hollow reducing high-precision rotor shaft of aero-engine
CN115213643B (en) * 2022-08-23 2023-08-01 无锡市润和机械有限公司 Method for machining ultra-long hollow reducing high-precision rotor shaft of aero-engine

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Application publication date: 20111228