CN106903487A - A kind of method and its fixture for the processing of foot piece part - Google Patents
A kind of method and its fixture for the processing of foot piece part Download PDFInfo
- Publication number
- CN106903487A CN106903487A CN201710187846.4A CN201710187846A CN106903487A CN 106903487 A CN106903487 A CN 106903487A CN 201710187846 A CN201710187846 A CN 201710187846A CN 106903487 A CN106903487 A CN 106903487A
- Authority
- CN
- China
- Prior art keywords
- foot piece
- processing
- fixture
- finishing
- clamp nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003754 machining Methods 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims description 28
- 238000003825 pressing Methods 0.000 claims description 19
- 238000003801 milling Methods 0.000 claims description 18
- 238000003672 processing method Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000005303 weighing Methods 0.000 abstract description 2
- 210000001699 lower leg Anatomy 0.000 description 6
- 229910001069 Ti alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
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[Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
Abstract
The present invention relates to a kind of method and its fixture for the processing of foot piece part, the method comprises the following steps：1）The foot piece part of amount of feeding roughing several times, removes big allowance；2）Carry out first time vacuum heat；3）It is fixed using double clamp fixture, the foot piece part of amount of feeding semifinishing several times；4）Second vacuum heat is carried out again；5）Positioning is clamped using V-type fixture, the size requirement to foot piece Finishing Parts Machining is completed；6）Foot piece part after finishing is directly overturn 180 ° on V-type fixture, the symmetry to the keyway of foot piece part is measured, if reach technical requirements；7）If measurement is not reaching to technical requirements, keyway size is finished again, step 6 is returned again to after finishing）；If measurement reaches technical requirements, then carries out 3 cycles of hot and cold cycle heat treatment.This method ensure that machining accuracy, it is therefore prevented that weighing wounded and deforming for part, processing efficiency is improve, saved cost.
Description
Technical field
The present invention relates to a kind of method of processing parts, particularly a kind of method and its fixture for the processing of foot piece part.
Belong to field of machining.
Background technology
At present, using the difficult processing of foot piece part comparison of titanium alloy material, because thin-walled, poor rigidity are in processing, easily
Deformation, the mm of wall thickness 2, the upper surface support gyro gimbal of part, it is φ 10h7 that the positioning of part is cylindrical, during positioning is cylindrical
Between keyway dimensional accuracy 3+0.01+0.004, symmetry 0.01mm, especially Milling Process part keyway 3+0.01+
When 0.004, in the presence of Milling Force, the groove sizes of 3+0.01+0.004 for processing part are expanded outwardly part, shake occur
It is dynamic, cause machining stress to produce vibrations knife mark in part machined surface, the suface processing quality of part is had a strong impact on, part processing is remaining
Amount is big, cuts each time due to Stress Release, makes part deformation, and titanium alloy material is oxidizable at high temperature, in knife when making processing
It is sharp easily into raw BUE, cause dimensional accuracy and form and position tolerance overproof and scrap.Other parts batch is big, every time after processing one
Need again to knife, processing efficiency is low, the supporting task for having a strong impact on product is completed.The processing technology of conventional foot piece part is adopted
Machining stress is eliminated with single general hot-working method, part deformation is controlled, the processing efficiency of part is improved, and use heart axle
Positioning, the positioning cutting of compressing component clamps the measures such as processing mode, but to large batch of thin-walled, poor rigidity titanium alloy material top
The above-mentioned measure of processing of spiral shell foot piece part is not applied to.
The content of the invention
The purpose of the present invention is：A kind of method and its fixture for the processing of foot piece part is provided, the method is by using
Vacuum heat processing technique, under certain vacuum degree, removes part machining stress, it is ensured that the accurate to dimension requirement of part, should
The fixture that method is used is effectively prevented weighing wounded and deforming for part, solve foot piece part due to thin-walled, poor rigidity plus
The problem that man-hour is easily deformed, and realize the quick-clamping of part；Meanwhile, after part is machined, it is not necessary to unload, can be with
Directly measured in chuck body, so as to improve the processing efficiency of foot piece part.
The technical scheme is that：A kind of method for the processing of foot piece part, it is characterized in that：Comprise the following steps：
Step 1）By controlling lathe rotating speed, cutting depth and the feed of lathe, the foot piece part of amount of feeding roughing several times,
The big allowance of removal；
Step 2）After roughing, first time vacuum heat is carried out；
Step 3）To step 2）Foot piece part after first time vacuum heat, is fixed using double clamp fixture, by control
The lathe rotating speed of lathe processed, cutting depth and feed, the foot piece part of amount of feeding semifinishing several times；
Step 4）After semifinishing, then second vacuum heat is carried out, further eliminate machining stress；
Step 5）Foot piece part after second vacuum heat is finished, positioning is clamped using V-type fixture, by control
Milling Speed processed, feed engagement and axial cutting depth, complete the size requirement to foot piece Finishing Parts Machining；
Step 6）Foot piece part after finishing is directly overturn 180 ° on V-type fixture, to the symmetrical of the keyway of foot piece part
Degree is measured, if reach technical requirements；
Step 7）If measurement is not reaching to technical requirements, keyway size is finished again, step is returned again to after finishing
6）；If measurement reaches technical requirements, then carries out 3 cycles of hot and cold cycle heat treatment, stabilization processing dimension.
The step 1）During roughing, lathe rotating speed is 250~300r/min, and cutting depth is 1.5mm, and feed is
0.24~0.3mm/r；The step 3）During semifinishing, lathe rotating speed is 155~175r/min, and cutting depth is 0.5mm, is walked
Knife amount is 0.18~0.24mm/r.
The first time vacuum heat be vacuum be 1 × 10-1Pa, temperature is 600 ± 10 DEG C, and the time is 2 ± 0.1
Carried out under the conditions of hour；Second vacuum heat is in vacuum 5 × 10-2Pa, temperature be 600 ± 10 DEG C, the time be 2 ±
Carried out under the conditions of 0.1 hour.
The step 5）During finishing, Milling Speed is 7.5~15m/min, and feed engagement is 0.03~0.08mm, axle
It is 1.5~3mm to cutting depth.
The step 7）3 cycles of hot and cold cycle heat treatment：After first cooling the temperature to -50~-60 DEG C, holding 1.5 ±
0.2 hour, then after temperature is risen into 90 ± 10 DEG C, kept for 3 ± 0.2 hours, then said process three times repeatedly.
The step 3）In double clamp fixture include heart axle, band groove clamp nut and band shoulder clamp nut, it is described
It is threadedly secured on the fixed disk of heart axle with groove clamp nut, and the locating rod of heart axle is passed through with groove clamp nut
First via；Described one end that locating rod is threadedly secured to shoulder clamp nut.
Described heart axle includes lathe connector, fixed disk and locating rod；Described lathe connector and locating rod are distinguished
It is fixedly connected on the both sides of fixed disk；Described fixed disk it is cylindrical on be provided with screw thread.
Annular groove is provided with the band groove clamp nut, circumferentially uniform point on cylindrical with groove clamp nut
It is furnished with driving hole；Be provided with the first via in the middle part of the end face with groove clamp nut, the first via with diameter greater than locating rod
Diameter.
The band shoulder clamp nut includes annular shoulder body and hex nut；Annular shoulder body and hexagonal spiral shell are structure as a whole.
The step 5）In V-type fixture include body, location-plate, orienting pin and pressing plate, described pressing plate passes through double end
Bolt and clamp nut are fixed on the square type platform of body；Location-plate is fixed on the body of square type platform side by housing screw,
Orienting pin is arranged on the top of location-plate；Described body includes milling machine positioning body and pedestal；Square is provided with described pedestal
Type platform, is horizontally arranged with V-arrangement locating slot and allows cutter groove in square type platform crown center, allows cutter groove to be located at V-arrangement locating slot lower section；Fixed
It is respectively symmetrically on the square type platform of the both sides up and down of position groove and is provided with the second screwed hole, the second via pair of the second screwed hole and pressing plate
Should, the first screwed hole and the 3rd screwed hole are provided with the pedestal of the square type platform left and right sides；First screwed hole is two, and fixed
The screw hole correspondence of position plate；The two ends of pedestal are provided with milling machine positioning body；Base bottom is provided with groove of cooling down；Milling machine is positioned
Body, square type platform and pedestal are structure as a whole.
It is an advantage of the invention that：Using reasonable lathe rotating speed, cutting depth and feed, titanium alloy material is carried out slightly to add
Work and semifinishing, improve the crudy and cutting wear of part, eliminate the deformation of part.Present invention employs three times
Heat treatment, for the first time under suitable vacuum degree condition, the vacuum heat of first time is carried out to foot piece part, is improved part and is cut
Performance is cut, prevents material surface from producing hard crisp layer, it is to avoid built-up edge to be produced during Tool in Cutting and causes cutter tipping, accelerate cutter mill
Damage；Second second vacuum heat by increasing vacuum, further eliminates part machining stress, the technique for having obtained
Property；The cycle heat treatment in hot and cold three cycles, stabilizer elements processing dimension for the third time.During semifinishing of the present invention, by using
Double clamp fixture, eliminates part secondary clamping position error, it is ensured that the Geometrical Tolerance Principle of part, improves Dimension Measurement essence
Degree and efficiency；During finishing, part is prevented to weigh wounded by using V-type fixture, compressive strain realizes the quick-clamping of part,
After part is machined, it is not necessary to unload, directly can be measured in chuck body, the integration of in-process measurement is further carried
Foot piece part processing efficiency high；Process of the invention and fixture, make foot piece part passing rate of processing reach more than 99%, full
Foot foot piece part produces 1000 sets of production outline per month, and has saved cost.
With reference to embodiment and accompanying drawing, the invention will be further described, but not as a limitation of the invention.
Brief description of the drawings
Fig. 1 is the structural representation of V-type fixture of the present invention；
Fig. 2 is body construction schematic diagram in Fig. 1；Wherein,（a）It is front view,（b）It is side view,（c）It is top view；
Fig. 3 is orientation plate structure schematic diagram；
Fig. 4 is orienting pin structural representation；
Fig. 5 is pressure plate structure schematic diagram；
Fig. 6 is foot piece Finishing Parts Machining structural representation；
Fig. 7 is the structural representation of double clamp fixture of the present invention；
Fig. 8 is the schematic diagram of heart axle；
Fig. 9 is band groove clamp nut structural representation；
Figure 10 is band shoulder clamp nut structural representation；
In figure：1st, body；2nd, location-plate；3rd, housing screw；4th, orienting pin；5th, stud；6th, clamp nut；7th, pressing plate；8、
Milling machine positioning body；9th, pedestal；10th, foot piece part；11st, the first screwed hole；12nd, square type platform；13rd, the 3rd screwed hole；14th, cool down
Groove；15th, anti-collision chamfering；16th, pressing groove；17th, V-arrangement locating slot；18th, cutter groove is allowed；19th, the second screwed hole；20th, heart axle；21st, with recessed
Groove clamp nut；22nd, annular groove；23rd, band shoulder clamp nut；24th, lathe connector；25th, fixed disk；26th, locating surface；27、
Locating rod；28th, driving hole；29th, the first via；30th, annular shoulder body；31st, hex nut；2-1, circular groove；2-2, screw
Hole；4-1, threaded body；4-2, shank；4-3, positioning cylinder；4-4, directional head；7-1, arc-shaped slot pass；7-2, the second via；
101st, part main body；102nd, location hole；103rd, large end face；104th, small end face.
Specific embodiment
Embodiment 1
A kind of method for the processing of foot piece part, comprises the following steps：
Step 1）By controlling lathe rotating speed, cutting depth and the feed of lathe, the foot piece part of amount of feeding roughing several times,
The big allowance of removal；
Step 2）After roughing, first time vacuum heat is carried out；
Step 3）To step 2）Foot piece part after first time vacuum heat, is fixed using double clamp fixture, by control
The lathe rotating speed of lathe processed, cutting depth and feed, the foot piece part of amount of feeding semifinishing several times；
Step 4）After semifinishing, then second vacuum heat is carried out, further eliminate machining stress；
Step 5）Foot piece part after second vacuum heat is finished, positioning is clamped using V-type fixture, by control
Milling Speed processed, feed engagement and axial cutting depth, complete the size requirement to foot piece Finishing Parts Machining；
Step 6）Foot piece part after finishing is directly overturn 180 ° on V-type fixture, to the symmetrical of the keyway of foot piece part
Degree is measured, if reach technical requirements；
Step 7）If measurement is not reaching to technical requirements, keyway size is finished again, step is returned again to after finishing
6）；If measurement reaches technical requirements, then carries out 3 cycles of hot and cold cycle heat treatment, stabilization processing dimension.
Embodiment 2
A kind of method for the processing of foot piece part, it is characterized in that：
Step 1）It is 250~300r/min in lathe rotating speed first with machine tool three-jaw chuck holding parts blank, cutting depth is
1.5mm, feed is under conditions of 0.24~0.3mm/r, the foot piece part of amount of feeding roughing several times is removed more than big processing
Amount；
Step 2）It is 1 × 10 in vacuum after roughing-1Pa, temperature is 600 ± 10 DEG C, and the time is 2 ± 0.1 hours conditions
Under, carry out first time vacuum heat；Prevent from there occurs strongization with oxygen, nitrogen, the hydrogen etc. in air under titanium alloy material high temperature
Learn the hard crisp layers such as reaction, generation TiO2, TiN, TiH so that machined surface layer produces stress raisers, reduces fatigue strength,
Also tool wear is exacerbated.Improve the cutting ability of part simultaneously, eliminate the machining stress of part, improve part processing machinability
Energy；
Step 3）To step 2）Foot piece part 10 after first time vacuum heat, is fixed, in machine using double clamp fixture
Bed rotating speed is 155~175r/min, and cutting depth is 0.5mm, under conditions of feed is 0.18~0.24mm/r, is entered several times
Give amount semifinishing foot piece part；
Step 4）After semifinishing, then in vacuum 5 × 10-2Pa, temperature is 600 ± 10 DEG C, and the time is 2 ± 0.1 hours conditions
Under, second vacuum heat is carried out, machining stress is further eliminated, the technique processing processability for having obtained；
Step 5）Foot piece part after second vacuum heat is finished, with excircle orientation, is clamped using V-type fixture
Positioning, is 7.5~15m/min in Milling Speed, and feed engagement is 0.03~0.08mm, and axial cutting depth is 1.5~3mm
Under conditions of, complete the size requirement to foot piece Finishing Parts Machining；
Step 6）Foot piece part after finishing is directly overturn 180 ° on V-type fixture, to the symmetrical of the keyway of foot piece part
Degree is measured, if reach technical requirements；
Step 7）If measurement is not reaching to technical requirements, keyway size is finished again, step is returned again to after finishing
6）；If measurement reaches technical requirements, then carries out 3 cycles of hot and cold cycle heat treatment, stabilization processing dimension；It is described it is cold,
Thermal cycle is heat-treated 3 cycles：After first cooling the temperature to -50~-60 DEG C, kept for 1.5 ± 0.2 hours, then temperature is risen to 90
After ± 10 DEG C, kept for 3 ± 0.2 hours, then said process three times repeatedly.
As shown in fig. 7, the step 3）In double clamp fixture include heart axle 20, band groove clamp nut 21 and band shoulder
Clamp nut 23, described is threadedly secured on the fixed disk 25 of heart axle 20 with groove clamp nut 21, and heart axle 20
Locating rod 27 passes through the first via 29 with groove clamp nut 21；The band shoulder clamp nut 23 is threadedly secured to positioning
One end of bar 27.
As shown in figure 8, described heart axle 20 includes lathe connector 24, fixed disk 25 and locating rod 27；Described lathe
Connector 24 and locating rod 27 are respectively fixedly connected with the both sides of fixed disk 25；Described fixed disk 25 it is cylindrical on be provided with spiral shell
Line, makes the seal face of the screw thread vertical with the locating surface 26 of fixed disk 25.
As shown in figure 9, annular groove 22 is provided with the band groove clamp nut 21, outer with groove clamp nut 21
Driving hole 28 is circumferentially evenly distributed with circle；The first via 29 is provided with the middle part of the end face with groove clamp nut 21, the
The diameter with diameter greater than locating rod 27 of one via 29.
As shown in Figure 10, the band shoulder clamp nut 23 includes annular shoulder body 30 and hex nut 31；The He of annular shoulder body 30
Hex nut 31 is structure as a whole.
The processing method of the double clamp fixture is：Positioning of the location hole 102 of the part main body 101 of foot piece part in heart axle
Positioned on bar 27, after band groove clamp nut 21 passes through locating rod 27, band groove clamp nut 21 is threaded on heart axle 20,
The edge of foot piece part large end face 103 is stuck in annular groove 22, and is compressed by the inner face of band groove clamp nut 21,
Process the small end face 104 of foot piece part, it is ensured that part length size and perpendicularity requirement；After machining, part is motionless, by band
The seal face of the annular shoulder body 30 of shoulder clamp nut 23 is pressed on the small end face 104 of foot piece part, with spanner insert band groove pressure
In the driving hole 28 of the circumference of tight nut 21, the cylindrical equidimension of foot piece part just can be processed, so as to ensure the processing chi of part
Very little precision and Geometrical Tolerance Principle, it is to avoid secondary clamping resetting error, improve part processing efficiency.
Under the double clamp fixture is compared with single repeated clamping, positioning clamping Excircle machining, radial clamping force can be eliminated
The deformation of generation, controls part resetting error, improves the dimensional accuracy of part processing, it is ensured that part Geometrical Tolerance Principle,
The annular shoulder body and hex nut used with shoulder clamp nut unite two into one, and reduce the parts fixation auxiliary compression time, it is ensured that
Seal face is vertical with part machined surface, improves processing efficiency.
As shown in figure 1, the step 5）In V-type fixture include body 1, location-plate 2, orienting pin 4 and pressing plate 7, it is described
Pressing plate 7 be fixed on the square type platform 12 of body 1 by stud 5 and clamp nut 6；Location-plate 2 is solid by housing screw 3
It is scheduled on square type platform side body 1, orienting pin 4 is arranged on the top of location-plate 2.In Fig. 2（a）With（b）It is shown, it is described
Body 1 include milling machine positioning body 8 and pedestal 9；Square type platform 12 is provided with described pedestal 9, in the crown center of square type platform 12
It is horizontally arranged with V-arrangement locating slot 17 and allows cutter groove 18, allows cutter groove 18 to be located at the lower section of V-arrangement locating slot 17；In the upper and lower of locating slot 17
It is respectively symmetrically on the square type platform 12 of both sides and is provided with the second screwed hole 19, second via 7-2 pairs of the second screwed hole 19 and pressing plate 7
Should, the first screwed hole 11 and the 3rd screwed hole 13 are provided with the pedestal 9 of the left and right sides of square type platform 12；First screwed hole
11 is two, and the screw hole 2-2 with location-plate 2 is corresponding；The two ends of pedestal 9 are provided with milling machine positioning body 8；The bottom of pedestal 9 sets
It is equipped with groove 14 of cooling down；Milling machine positioning body 8, square type platform 12 and pedestal 9 are structure as a whole.
As shown in figure 3, described location-plate 2 is inverted " t " type, it is provided with for fixed on the top of inverted " t " type vertical portion
The circular groove 2-1 of position；In the bottom of inverted " t " type centered on vertical portion, it is respectively symmetrically and is provided with screw hole 2-2；Pressure
Be fixed on location-plate 2 on body 1 through screw hole 2-2 by tight screw 3.Circular groove 2-1 is with locating slot 17 in same axis
On.
As shown in figure 4, described orienting pin 4 includes threaded body 4-1, shank 4-2, positioning cylinder 4-3 and directional head 4-4,
Described threaded body 4-1, shank 4-2, positioning cylinder 4-3 and directional head 4-4 are integrative-structures, and shank 4-2 is located at positioning cylinder
4-3 one end, directional head 4-4 is located at the positioning cylinder 4-3 other ends, and threaded body 4-1 is located at the shank 4-2 other ends.
As shown in figure 5, described pressing plate 7 is square type, an arc-shaped slot pass for transverse direction is provided with the middle part of the bottom surface of pressing plate 7
7-1, the second via 7-2 is symmetrically arranged with arc-shaped slot pass 7-1 both sides.
In Fig. 2（c）Shown, described milling machine positioning body 8 includes anti-collision chamfering 15 and pressing groove 16, anti-collision chamfering 15
It is symmetrically distributed in the both sides of pressing groove 16.
Processing method using the V-type fixture is：Centering is positioned to foot piece part using V-arrangement locating slot 17；Milling machine is positioned
Body 8 is directly connected with lathe, eliminates position gap；Orienting pin is oriented by the circular groove 2-1 of position plate, and will be fixed
In penetrating foot piece part location hole to pin, the correct Working position of foot piece part is completed, limitation foot piece part is rotated when processing；Again
Foot piece part is compressed by the pressing plate with arc-shaped slot pass 7-1, foot piece part is subject to uniform cutting force, so as to control
Foot piece part is weighed wounded or compresses deformation when processing.
Embodiment 3
On the basis of embodiment 2, there is annular knurl on the surface of described shank 4-2, prevents hand from perspiring and skids, described threaded body 4-
1 can be with externally threaded threaded rod, or with externally threaded cylinder, orienting pin 4 when not in use, by threaded body
4-1 is connected with the 3rd screwed hole 13 on body 1, prevents orienting pin 4 from being lost after part processing, facilitates use next time.
As shown in fig. 6, described foot piece part 10 is gyro foot piece part.The concrete structure of its part belongs to existing skill
Art is just not described in detail here.
Specific processing method for gyro foot piece part is：First with machine tool three-jaw chuck holding parts blank,
Under lathe 250~300r/min of rotating speed, cutting depth 1.5mm, 0.24~0.3mm/r of feed cutting three elements, enter several times
It is cylindrical to amount roughing part milling positioning, big allowance is removed, and in vacuum 1 × 10-1PaUnder the conditions of, carry out first
Secondary vacuum heat；Positioned with hole, using double clamp fixture, first press large end face, after processing excircles end face, part is motionless, passes through
Pressing plate mode is changed, in lathe 155~175r/min of rotating speed, cutting depth 0.5mm, 0.18~0.24mm/r of feed cutting three will
Under element, the part of amount of feeding semifinishing several times milling positioning is cylindrical, after completing semifinishing, and vacuum 5 × 10-2Pa
Under the conditions of, second vacuum heat is carried out, machining stress is further removed, the technique processing processability for having obtained.Part essence
Processing, in 7.5~15m/min of Milling Speed, 0.03~0.08mm of feed engagement, axially cuts 1.5~3mm with excircle orientation
Under conditions of, in V-type fixture positioning, finishing keyway size 3+0.01+0.004, after completing dimensioned, part is directly in V
Type fixture overturns 180 ° of symmetry form and position tolerance 0.01mm technical requirements of measurement keyway, after completing the finishing of keyway size,
After being cooled to -50~60 DEG C, kept for 1.5 ± 0.2 hours, 90 ± 10 DEG C are then warming up to again, holding is followed for 3 ± 0.2 hours
Ring is heat-treated 3 cycles, stabilization processing dimension.
The application method of wherein V-type fixture is：By the part main body 101 of gyro foot piece part on body 1 V-arrangement locating slot
V-arrangement locating slot 17 is positioned, circular groove orientation of the positioning cylinder in orienting pin 4 in location-plate, and directional head is penetrated
Part Working position positioning is completed in part location hole 102.Stud 5 is loaded into body through the second via 7-2 of pressing plate 7
On the second screwed hole 19 in, and with rotate clamp nut 6 gyro foot piece part compression；Gyro foot piece part is processed to knife
When, only need initial workpiece by 17 points of the V-arrangement locating slot of cutter and body 1, Set and Positioning part is only needed to every time, without weight
The whole cutter-aligndimension of polyphony, furthermore with the characteristics of the dividing neutral good of V-arrangement locating slot 17 of body 1, gyro foot piece part can be straight
It is connected on fixture and measures, improve measurement efficiency, it is to avoid part secondary cumbersome correct error during measurement.
The present invention removes big allowance using roughing, and improves part machinability by first time vacuum heat
Can, semifinishing removes part allowance again, is positioned using heart axle, and double clamp end face compresses mode fixture, eliminates part
Radial clamping deforms, and improves foot piece Milling Process positioning Excircle machining precision, and further disappear by second vacuum heat
Except part machining stress, the technique processability for having obtained, finishing is reached using the fixture of the outer garden V-type Milling Process for processing
To part forming dimension precision requirement, and by three hot and cold cycle heat treatments, stabilization processing dimension.Fixture of the invention, zero
Part clamped one time is positioned, and end face is compressed, and by changing pressing plate mode, by part end face, cylindrical once completes processing, it is to avoid part
Secondary clamping position error, fast-holding is realized using band shoulder clamp nut, it is therefore prevented that part pressure tiltedly, weigh wounded, compressive strain, it is ensured that
Part processing Geometrical Tolerance Principle；V-type fixture uses centering V-structure, can realize the quick-clamping of part, part processing
After the completion of, it is not necessary to unload, directly can be measured in chuck body, improve foot piece part processing efficiency.
The part and structure that the present embodiment is not described in detail belong to the well-known components and common structure or conventional hand of the industry
Section, does not describe one by one here.
Claims (10)
1. it is a kind of for foot piece part processing method, it is characterized in that：Comprise the following steps：
Step 1）By controlling lathe rotating speed, cutting depth and the feed of lathe, the foot piece part of amount of feeding roughing several times,
The big allowance of removal；
Step 2）After roughing, first time vacuum heat is carried out；
Step 3）To step 2）Foot piece part after first time vacuum heat, is fixed using double clamp fixture, by control
The lathe rotating speed of lathe processed, cutting depth and feed, the foot piece part of amount of feeding semifinishing several times；
Step 4）After semifinishing, then second vacuum heat is carried out, further eliminate machining stress；
Step 5）Foot piece part after second vacuum heat is finished, positioning is clamped using V-type fixture, by control
Milling Speed processed, feed engagement and axial cutting depth, complete the size requirement to foot piece Finishing Parts Machining；
Step 6）Foot piece part after finishing is directly overturn 180 ° on V-type fixture, to the symmetrical of the keyway of foot piece part
Degree is measured, if reach technical requirements；
Step 7）If measurement is not reaching to technical requirements, keyway size is finished again, step is returned again to after finishing
6）；If measurement reaches technical requirements, then carries out 3 cycles of hot and cold cycle heat treatment, stabilization processing dimension.
2. it is according to claim 1 it is a kind of for foot piece part processing method, it is characterized in that：The step 1）Roughing
When, lathe rotating speed is 250~300r/min, and cutting depth is 1.5mm, and feed is 0.24~0.3mm/r；The step 3）Half
During finishing, lathe rotating speed is 155~175r/min, and cutting depth is 0.5mm, and feed is 0.18~0.24mm/r.
3. it is according to claim 1 it is a kind of for foot piece part processing method, it is characterized in that：The first time Vacuum Heat
Treatment be vacuum be 1 × 10-1Pa, temperature is 600 ± 10 DEG C, and the time is to be carried out under the conditions of 2 ± 0.1 hours；Second true
Sky heat treatment is in vacuum 5 × 10-2Pa, temperature is 600 ± 10 DEG C, and the time is to be carried out under the conditions of 2 ± 0.1 hours.
4. it is according to claim 1 it is a kind of for foot piece part processing method, it is characterized in that：The step 5）Finishing
When, Milling Speed is 7.5~15m/min, and feed engagement is 0.03~0.08mm, and axial cutting depth is 1.5~3mm.
5. it is according to claim 1 it is a kind of for foot piece part processing method, it is characterized in that：The step 7）It is cold,
Thermal cycle is heat-treated 3 cycles：After first cooling the temperature to -50~-60 DEG C, kept for 1.5 ± 0.2 hours, then temperature is risen to 90
After ± 10 DEG C, kept for 3 ± 0.2 hours, then said process three times repeatedly.
6. it is according to claim 1 it is a kind of for foot piece part processing method, it is characterized in that：The step 3）In it is double
Clamp jig includes heart axle（20）, band groove clamp nut（21）With band shoulder clamp nut（23）, described band groove compresses spiral shell
It is female（21）It is threadedly secured to heart axle（20）Fixed disk（25）On, and heart axle（20）Locating rod（27）Through band groove pressure
Tight nut（21）The first via（29）；The band shoulder clamp nut（23）It is threadedly secured to locating rod（27）One end.
7. it is according to claim 6 it is a kind of for foot piece part processing method, it is characterized in that：Described heart axle（20）Bag
Include lathe connector（24）, fixed disk（25）And locating rod（27）；Described lathe connector（24）And locating rod（27）Respectively
It is fixedly connected on fixed disk（25）Both sides；Described fixed disk（25）It is cylindrical on be provided with screw thread.
8. it is according to claim 6 it is a kind of for foot piece part processing method, it is characterized in that：The band groove compresses spiral shell
It is female（21）Inside it is provided with annular groove（22）, in band groove clamp nut（21）It is cylindrical on be circumferentially evenly distributed with driving hole
(28)；In band groove clamp nut（21）End face middle part be provided with the first via（29）, the first via（29）With diameter greater than
Locating rod（27）Diameter.
9. it is according to claim 6 it is a kind of for foot piece part processing method, it is characterized in that：The band shoulder clamp nut
（23）Including annular shoulder body（30）And hex nut（31）；Annular shoulder body（30）And hex nut（31）It is structure as a whole.
10. it is according to claim 1 it is a kind of for foot piece part processing method, it is characterized in that：The step 5）In V
Type fixture includes body（1）, location-plate（2）, orienting pin（4）And pressing plate（7）, described pressing plate（7）By stud（5）With
Clamp nut（6）It is fixed on body（1）Square type platform（12）On；Location-plate（2）By housing screw（3）It is fixed on square type platform one
Side body（1）On, orienting pin（4）It is arranged on location-plate（2）Top；Described body（1）Including milling machine positioning body（8）And base
Seat（9）；Described pedestal（9）On be provided with square type platform（12）, in square type platform（12）Crown center is horizontally arranged with V-arrangement locating slot
（17）With allow cutter groove（18）, allow cutter groove（18）Positioned at V-arrangement locating slot（17）Lower section；In locating slot（17）Both sides up and down square type
Platform（12）On be respectively symmetrically and be provided with the second screwed hole（19）, the second screwed hole（19）With pressing plate（7）The second via（7-2）It is right
Should, in square type platform（12）The pedestal of the left and right sides（9）On be provided with the first screwed hole（11）With the 3rd screwed hole（13）；First spiral shell
Pit（11）It it is two, with location-plate（2）Screw hole（2-2）Correspondence；In pedestal（9）Two ends be provided with milling machine positioning body
（8）；Pedestal（9）Bottom is provided with groove of cooling down（14）；Milling machine positioning body（8）, square type platform（12）And pedestal（9）It is structure as a whole.
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| CN102335754A (en) * | 2011-10-13 | 2012-02-01 | 中国船舶重工集团公司第七二五研究所 | High-precision machining deformation control method for titanium alloy spherical shell |
| CN102744680A (en) * | 2012-07-13 | 2012-10-24 | 贵州凯星液力传动机械有限公司 | Grinding clamping device for machining high-strength countersunk shaft and application method of grinding clamping device |
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