CN103624497B - A kind of processing method of large radius thin-walled semi-annular part - Google Patents
A kind of processing method of large radius thin-walled semi-annular part Download PDFInfo
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- CN103624497B CN103624497B CN201310632010.2A CN201310632010A CN103624497B CN 103624497 B CN103624497 B CN 103624497B CN 201310632010 A CN201310632010 A CN 201310632010A CN 103624497 B CN103624497 B CN 103624497B
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- annular part
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/007—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor for internal turning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/06—Profile cutting tools, i.e. forming-tools
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Abstract
A processing method for large radius thin-walled semi-annular part, belongs to aero engine technology field, particularly relates to a kind of processing method of large radius thin-walled semi-annular part.The invention provides a kind of processing method of large radius thin-walled semi-annular part, it effectively controls the machining deformation of large radius thin-walled semi-annular part, achieve the mismachining tolerance of large radius thin-walled semi-annular part within 0.05mm, improve the geometric accuracy of large radius thin-walled semi-annular part, thus improve the qualification rate of part.The processing method of large radius thin-walled semi-annular part, comprises the steps: step one: roughing goes out domain profile; Step 2: roughing pin-and-hole and screw hole and left and right shoulder; Step 3: domain part is cut into semi-annular part; Step 4: the overall profile of semifinishing; Step 5: the overall profile of fine finishining.
Description
Technical field
The invention belongs to aero engine technology field, particularly relate to a kind of processing method of large radius thin-walled semi-annular part.
Background technology
In daily machining, often can run into processing thin-walled circular ring type part, these parts are domain processing a bit, and some pieces together the domain by several sections of circular arcs to form, the wherein the most difficult processing of thin-walled semi-annular part.Large-scale thin-walled semi-annular part adopts prior art to be very easily out of shape in the process of processing, is difficult to ensure geometric accuracy, and when especially needing quenching hardness higher, its distortion is just even scrapped more greatly
Summary of the invention
For prior art Problems existing, the invention provides a kind of processing method of large radius thin-walled semi-annular part, it effectively controls the machining deformation of large radius thin-walled semi-annular part, achieve the mismachining tolerance of large radius thin-walled semi-annular part within 0.05mm, improve the geometric accuracy of large radius thin-walled semi-annular part, thus improve the qualification rate of part.
To achieve these goals, the present invention adopts following technical scheme: a kind of processing method of large radius thin-walled semi-annular part, comprises the steps:
Step one: roughing goes out domain profile
Get the raw materials ready by a full circle part, on full circle part, roughing goes out endoporus, cylindrical and left and right both ends of the surface, forms domain part; Then domain part is carried out high tempering heat treatment;
Step 2: roughing pin-and-hole and screw hole and left and right shoulder
The end face of domain part processes several pin-and-hole and screw holes, then domain part is carried out quenching heat treatment; Roughing domain part both ends of the surface, endoporus, cylindrical; And roughing goes out left and right shoulder, form inner ring protruding;
Step 3: domain part is cut into semi-annular part
Cut from same diametric(al) by domain part, form left and right two semi-annular part, cut surface is the binding face of left and right two semi-annular part; Left and right two semi-annular part being fixed to has on the jig plate of through hole again, the same side end face of left and right two semi-annular part and a side end face close contact of jig plate; And the both ends of the surface of left and right semi-annular part after fixing with jig plate are alignd respectively, faying face is fitted; Then left and right two semi-annular part are carried out artificial aging heat treatment together with jig plate, finally pull down jig plate;
Step 4: the overall profile of semifinishing
The both ends of the surface of the left and right semi-annular part of semifinishing and the faying face of left and right semicircular ring parts, and left and right semi-annular part is fixed on jig plate, ensure that the faying face of left and right semi-annular part fits tightly, inside and outside circle aligns respectively; Then the left and right shoulder of the left and right semi-annular part of semifinishing and inner ring protruding; Left and right two semi-annular part are carried out artificial aging heat treatment together with jig plate, finally pulls down jig plate;
Step 5: the overall profile of fine finishining
The both ends of the surface of the left and right semi-annular part of barreling and faying face, ensure that scale error is all within 0.05mm, then left and right two semi-annular part retightened on jig plate, and faying face fits tightly, form the domain; Finish turning processing the cylindrical sidewall of the domain, the left and right side profile of inner ring projection and inner groove, each profile of polishing, pulls down jig plate, two semi-annular part completion of processing.
In described step 5, adopt the left profile of the first formed turning tool finish turning processing inner ring projection, the first formed turning tool comprises the first cutter hub and the first blade, and the tooth shape of the first blade is corresponding with the profile of the left profile of inner ring projection.
In described step 5, adopt the right profile of the second formed turning tool finish turning processing inner ring projection, the second formed turning tool comprises the second cutter hub and the second blade, and the tooth shape of the second blade is corresponding with the profile of the right profile of inner ring projection.
In described step 5, adopt the 3rd formed turning tool finish turning processing inner groove, the 3rd formed turning tool comprises the 3rd cutter hub and the 3rd blade, and the tooth shape of the 3rd blade is corresponding with the profile of inner groove.
Beneficial effect of the present invention:
The processing method of a kind of large radius thin-walled semi-annular part of the present invention, effectively control the machining deformation of large radius thin-walled semi-annular part, achieve the mismachining tolerance of large radius thin-walled semi-annular part within 0.05mm, improve the geometric accuracy of large radius thin-walled semi-annular part, thus improve the qualification rate of part.
Accompanying drawing explanation
Fig. 1 is the structural representation of large radius thin-walled semi-annular part;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the structural representation after large radius thin-walled semi-annular part is fixed on jig plate;
Fig. 4 is the side view of Fig. 3;
Fig. 5 is the structural representation of the first formed turning tool;
Fig. 6 is the top view of Fig. 5;
Fig. 7 is the structural representation of the second formed turning tool;
Fig. 8 is the top view of Fig. 7;
Fig. 9 is the structural representation of the 3rd formed turning tool;
Figure 10 is the top view of Fig. 9;
In figure, 1-large radius thin-walled semi-annular part, 2-endoporus, 3-inner ring is protruding, 31-left shoulder, 32-right shoulder, 33-left profile, 34-right profile, 4-inner groove, 5-pin-and-hole, 6-screw hole, the 7-the first formed turning tool, 71-the first cutter hub, the 72-the first blade, the 8-the second formed turning tool, the 81-the second cutter hub, 82-the second blade, the 9-the three formed turning tool, the 91-the three cutter hub, 92-the three blade, 10-jig plate, 11-faying face.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Fig. 1 ~ Figure 10, a kind of processing method of large radius thin-walled semi-annular part, specifically comprises the steps:
Step one: roughing goes out domain profile
Adopt forging to get the raw materials ready by a full circle part, maximum outline stays 5mm surplus, rough turnly on full circle part processes endoporus 2, cylindrical and left and right both ends of the surface, and form domain part, 3 ~ 4mm surplus is stayed in every face; Then domain part is carried out high tempering heat treatment, again rough turn processing endoporus 2, cylindrical and left and right both ends of the surface, 2 ~ 2.5mm surplus is stayed in every face;
Get the raw materials ready material: 4Cr5MoV1Si; The lathe model that Vehicle Processing adopts: PT39; High tempering heat treatment parameter: 650 DEG C, middle temperature electric furnace, is incubated after 2 hours and naturally cools in atmosphere;
Step 2: roughing pin-and-hole 5 and screw hole 6 and left and right shoulder
The end face of domain part processes pin-and-hole 5 and the screw hole 6 of several positional symmetry, and then domain part is carried out quenching heat treatment, now hardness reaches HRC40 ~ 45; Rough turn processing domain part both ends of the surface again, 0.5 ~ 0.6mm surplus is stayed in every face; Endoporus 2, the cylindrical of rough turn processing domain part, and rough turnly process left and right shoulder, form inner ring projection 3,1 ~ 1.5mm surplus is stayed in every face;
The lathe model that Vehicle Processing adopts: PT39; Quenching heat treatment parameter: high-temperature electric resistance furnace 1020 DEG C, is incubated 1 hour, cools in oil, high-temperature electric resistance furnace 590 DEG C, is incubated 2 hours, naturally cools in atmosphere;
Step 3: domain part is cut into semi-annular part
Domain part is carried out Linear cut from same diametric(al), and form left and right two symmetrical semi-annular part, cut surface is the faying face 11 of left and right two semi-annular part; Left and right semi-annular part being fixed to by the screw hole 6 on semicircular ring part has on the jig plate 10 of through hole again, the through hole internal diameter of jig plate 10 is greater than the internal diameter of the endoporus 2 of semi-annular part, the same side end face of left and right two semi-annular part and a side end face close contact of jig plate 10; The both ends of the surface of the left and right semi-annular part after fixing with jig plate 10 are alignd respectively, and the faying face 11 of left and right two semi-annular part is fitted; Then left and right semi-annular part is carried out artificial aging heat treatment together with jig plate 10, release stress; Finally pull down jig plate 10;
Linear cutting equipment model: DK7763; Artificial aging heat treatment parameter: 280 ~ 320 DEG C, electric furnace, is incubated 3 hours, naturally cools in atmosphere;
Step 4: the overall profile of semifinishing
The both ends of the surface of the left and right semi-annular part of barreling, 0.2 ~ 0.3mm surplus is stayed in every face; Again the faying face 11 of the left and right semicircular ring parts of barreling, for subsequent processing reserves allowance, and its screw hole 6 by left and right semicircular ring parts is fixed on jig plate 10, ensure that the faying face 11 of left and right two semi-annular part fits tightly, inside and outside circle aligns respectively; Then left and right shoulder and the inner ring projection 3 of left and right semi-annular part processed by half finish turning, and 0.5 ~ 0.6mm surplus is stayed in every face; Then left and right two semi-annular part are carried out artificial aging heat treatment together with jig plate 10, finally pull down jig plate 10;
The vertical lathe model that barreling adopts: C5112A; The lathe model that Vehicle Processing adopts: PT39; Artificial aging heat treatment parameter: 280 ~ 320 DEG C, electric furnace, is incubated 3 hours, naturally cools in atmosphere;
Step 5: the overall profile of fine finishining
The both ends of the surface of the left and right semi-annular part of barreling and faying face 11, ensure that scale error is all within 0.05mm, then by screw hole 6, pin-and-hole 5, left and right two semi-annular part are retightened on jig plate 10, and faying face 11 fits tightly, form the domain; Lathe is adopted to press endoporus 2 centering, the cylindrical sidewall of the finish turning processing domain, and adopt the left and right side profile of first, second formed turning tool difference finish turning processing inner ring projection 3, the 3rd formed turning tool 9 finish turning is adopted to process inner groove 4, each profile of polishing, pull down jig plate 10, two symmetrical semi-annular part completion of processing;
The vertical lathe model that barreling adopts: C5112A; The lathe model that Vehicle Processing adopts: PT39.
Because jig plate 10 can produce distortion when artificial aging heat treatment, so according to same jig plate 10, then need the both ends of the surface of barreling jig plate 10 again, ensure that scale error is within 0.02mm.
The first formed turning tool 7 described in step 5, the tooth shape comprising the first cutter hub 71 and the first blade 72, first blade 72 is corresponding with the profile of the left profile 33 of inner ring projection 3; The acute angle that the face at the first blade 72 place and vertical plane are formed is 10 °, and the first cutter hub 71 is provided with escape.
The second formed turning tool 8 described in step 5, the tooth shape comprising the second cutter hub 81 and the second blade 82, second blade 82 is corresponding with the profile of the right profile 34 of inner ring projection 3; The acute angle that the face at the second blade 82 place and vertical plane are formed is 10 °, and the second cutter hub 81 is provided with escape.
The 3rd formed turning tool 9 described in step 5, the tooth shape comprising the 3rd cutter hub 91 and the 3rd blade the 92, three blade 92 is corresponding with the profile of inner groove 4; The acute angle that the face at the 3rd blade 92 place and vertical plane are formed is 10 °, and the 3rd cutter hub 91 is provided with escape.
Claims (4)
1. a processing method for large radius thin-walled semi-annular part, is characterized in that comprising the steps:
Step one: roughing goes out domain profile;
Get the raw materials ready by a full circle part, on full circle part, roughing goes out endoporus, cylindrical and left and right both ends of the surface, forms domain part; Then domain part is carried out high tempering heat treatment;
Step 2: roughing pin-and-hole and screw hole and left and right shoulder;
The end face of domain part processes several pin-and-hole and screw holes, then domain part is carried out quenching heat treatment; Roughing domain part both ends of the surface, endoporus, cylindrical; And roughing goes out left and right shoulder, form inner ring protruding;
Step 3: domain part is cut into semi-annular part;
Cut from same diametric(al) by domain part, form left and right two semi-annular part, cut surface is the binding face of left and right two semi-annular part; Left and right two semi-annular part being fixed to has on the jig plate of through hole again, the same side end face of left and right two semi-annular part and a side end face close contact of jig plate; And the both ends of the surface of left and right semi-annular part after fixing with jig plate are alignd respectively, faying face is fitted; Then left and right two semi-annular part are carried out artificial aging heat treatment together with jig plate, finally pull down jig plate;
Step 4: the overall profile of semifinishing
The both ends of the surface of the left and right semi-annular part of semifinishing and the faying face of left and right semicircular ring parts, and left and right semi-annular part is fixed on jig plate, ensure that the faying face of left and right semi-annular part fits tightly, inside and outside circle aligns respectively; Then the left and right shoulder of the left and right semi-annular part of semifinishing and inner ring protruding; Left and right two semi-annular part are carried out artificial aging heat treatment together with jig plate, finally pulls down jig plate;
Step 5: the overall profile of fine finishining
The both ends of the surface of the left and right semi-annular part of barreling and faying face, ensure that scale error is all within 0.05mm, then left and right two semi-annular part retightened on jig plate, and faying face fits tightly, form the domain; Finish turning processing the cylindrical sidewall of the domain, the left and right side profile of inner ring projection and inner groove, each profile of polishing, pulls down jig plate, two semi-annular part completion of processing.
2. the processing method of large radius thin-walled semi-annular part according to claim 1, it is characterized in that the left profile adopting the first formed turning tool finish turning processing inner ring projection in described step 5, first formed turning tool comprises the first cutter hub and the first blade, and the tooth shape of the first blade is corresponding with the profile of the left profile of inner ring projection.
3. the processing method of large radius thin-walled semi-annular part according to claim 1, it is characterized in that the right profile adopting the second formed turning tool finish turning processing inner ring projection in described step 5, second formed turning tool comprises the second cutter hub and the second blade, and the tooth shape of the second blade is corresponding with the profile of the right profile of inner ring projection.
4. the processing method of large radius thin-walled semi-annular part according to claim 1, it is characterized in that in described step 5, adopt the 3rd formed turning tool finish turning processing inner groove, 3rd formed turning tool comprises the 3rd cutter hub and the 3rd blade, and the tooth shape of the 3rd blade is corresponding with the profile of inner groove.
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| CN201310632010.2A CN103624497B (en) | 2013-11-27 | 2013-11-27 | A kind of processing method of large radius thin-walled semi-annular part |
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| CN201310632010.2A CN103624497B (en) | 2013-11-27 | 2013-11-27 | A kind of processing method of large radius thin-walled semi-annular part |
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| CN103624497B true CN103624497B (en) | 2016-01-06 |
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