CN106271477A - Ship lift gear shaft processing technique - Google Patents
Ship lift gear shaft processing technique Download PDFInfo
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- CN106271477A CN106271477A CN201610794802.3A CN201610794802A CN106271477A CN 106271477 A CN106271477 A CN 106271477A CN 201610794802 A CN201610794802 A CN 201610794802A CN 106271477 A CN106271477 A CN 106271477A
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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
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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Abstract
The invention discloses the ship lift gear shaft processing technique in Gear Processing manufacture field, including getting the raw materials ready, blank two ends chamfering bit centre bore, rough turn see light, flaw detection, heat treatment, rough turn, blank is reviewed, half finish turning, rough mill tooth, chamfering, heat treatment, shot-peening, finish turning, corase grind, finish-milling tooth, coloring rolling inspection, detection, fine grinding, the step of inspection eventually, the reverse processing and manufacturing to ship lift gear shaft can be completed by the technique of this programme, the ship lift gear shaft produced is formed in one, Forming Quality is good, internal flaw is few, mismatch error is not had between bevel gear and axle, the accuracy of mesh is high, transmission stability is good, the vibrations and the noise that produce during use are little.
Description
Technical field
The present invention relates to Gear Processing and manufacture field, be specifically related to a kind of ship lift gear shaft processing technique.
Background technology
Ship lift be utilize the power of machinery promote or decline boats and ships, overcome on navigation channel concentrate the height of water and
Ship is made to pass through the plant equipment of dam.Ship lift is the most critical equipment that power station promotes system, has output moment of torsion
Greatly, the feature such as gear ratio is big, shape and structure size is big, the drive system of ship lift mainly by motor, decelerator, shaft coupling and with
The compositions such as step axle, inside generally uses gear drive, and bevel gear conventional in ship lift completes the commutation transmission of power, for
Meeting the needs of internal structure, the bevel gear that ship lift uses is in the length of the axle of face cone side longer, and prior art is often adopted
With the bevel gear of separation to be realized the connection of gear and axle by the mode that the mode such as bonded is assemblied on multidiameter, but this
Cooperation between sample part requires many, all there is inevitable error at each cooperation, and Errors Catastrophic causes the internal biography of ship lift
Dynamic vibrations are big, noise is big, transmission efficiency is low.
In order to meet the use needs of ship lift, a kind of ship lift gear shaft of existing design, there is integrated multidiameter
And bevel gear, and the multidiameter of bevel gear face cone side is longer, and the axle journal of back cone side is short, on face cone one side shaft integrally formed with
Straight-tooth.At present, the most it is not applicable to produce the processing technique of this type of ship lift gear shaft.
Summary of the invention
The invention is intended to provide ship lift pinion processing technique, longer to realize bevel gear face cone side shaft length
The processing of ship lift gear shaft.
For reaching above-mentioned purpose, the basic technology scheme of the present invention is as follows: ship lift gear shaft processing technique, including following
Step:
A, get the raw materials ready；
B, flaw detection, detect workpiece with ultrasound wave, and the workpiece, defect after detection allows≤φ 2mm, end ripple reduction amount
≤6dB；
C, rough turn, car goes out gear shaft and gear mass, repaiies two ends centre bore, and centre bore roughness requirements Ra1.6, from bevel gear
The first noumenon sample and the second bulk sample is cut on rough turn body；
D, blank are rechecked, and the first noumenon sample carries out the reinspection of chemical composition, grain size, non-metallic inclusion, to the
Two bulk sample carry out mechanical performance reinspection；
E, rough milling tooth, create bevel gear pair model, given correction of the flank shape is repaiied to parameter, and work in-process generates processor in the heart,
The cutter used is hard alloy cylindrical bar milling cutter；The front path of mirror image: position, cross point bearing axially by installed surface, is seen forward by back cone
Cone, the right of teeth groove, cutter is by back cone to inner cone and is parallel to face cone and carries out tooth working motion, and machining direction is along bearing X-direction；Tooth
The left side of groove, cutter is by inner cone to back cone and is parallel to face cone and carries out tooth working motion, and machining direction is along positive X-direction；Cutter rail
Mark is relative to teeth in clockwise, and whole Gear shape process is progressive along tooth depth direction；Processor is carried out mirror image, mirror image
By back cone, rear path: just axial by installed surface of position, cross point, sees that cutter is by back cone to inner cone also to inner cone, the right of teeth groove
Being parallel to face cone and carry out tooth working motion, machining direction is along positive X-direction；The left side of teeth groove, cutter is by inner cone to back cone parallel
Carrying out tooth working motion in face cone, machining direction is along negative X-direction；Cutter path relative to teeth in clockwise, the whole flank of tooth
Process progressive along tooth depth direction；Guarantee mesh regional position, use special tooling to withstand the centre bore in workpiece face cone direction,
Described special tooling includes lathe dividing head, tailstock and the tailstock centre being arranged on tailstock, clamping dividing head and tailstock centre,
Make dividing head be positioned at the positive X axis of tailstock, dividing head claw just to tailstock centre and distance more than 1 meter, respectively to dividing head and
It is levelling that tailstock carries out centering, makes both centres of gyration all overlap with X-axis, dividing head clamping gear face cone axis of orientation neck, clamping
Positional distance bevel gear teeth are more than 450mm, with milling cutter, gear mass are carried out rough milling, mill out the left and right flank of tooth, and midpoint indexes
Circle chordal thickness reserves the thick finish-milling tooth amount of 1mm, to flank profil chamfering 1.5 × 45 °, to tooth top rounding, is molded as one formula liter
Ship machine gear shaft；
F, heat treatment；
G, shot-peening；
H, finish turning, carry out finish turning to the bevel gear after bead, makes that the cylindrical of each step of gear shaft, gear mass is monolateral to be stayed
0.3mm surplus, end face stays 0.2mm surplus；
I, corase grind, roughly grind gear shaft, the cylindrical of each step of gear mass, monolateral stay 0.15mm surplus, and grinding length is to finished product；
J, finish-milling tooth, use the operation as rough milling tooth, and the left and right flank of tooth carries out polish, and midpoint transverse tooth thickness is worked into into
Product；
K, coloring rolling inspection, carry out the dye penetrant inspection accuracy of mesh to bevel gear；
L, detection, the finished product bevel gear after coloring rolling inspection is sent gear inspector to detect its teeth portion precision, and carries out magnetic powder spy
Wound, is allowed to linear discontinuities≤0.5 after workpiece flaw detection, circular flaw≤0.1；
M, fine grinding, refine the workpiece after detection, and fine grinding workpiece each step cylindrical is to finished product；
N, eventually inspection.
Principle and the advantage of this programme be: prepares overall raw material before processing, raw material is carried out ultrasonic examination detection, evades
Raw material internal flaw, reduces the impact that gear quality is caused by raw material internal flaw.The first noumenon sample is taken the when of rough turn
With the reinspection that the second bulk sample is respectively used to chemical composition, grain size, non-metallic inclusion and mechanical performance, meet material and survey
The reasonability tested.When rough milling tooth, conventional processor is the processor being applicable to monomer bevel gear, by processor mirror image,
By the diameter of axle clamping of gear shaft face cone side on lathe, it is processed from the direction contrary with conventional machining, makes to add cutter in man-hour
Tool feed feed reversing, tool feeding track becomes clockwise relative to teeth, adjusts in clamping tooling dividing head and top
Relative position, dividing head claw just to tailstock centre and distance more than 1 meter so that can be by gear shaft face cone side during clamping
Axle stably firm clamping, prevent the centre-of gravity shift of clamping backgear axle from causing processing that deviation, dividing head and top two occur
The centre of gyration of person overlaps with X-axis so that during ship lift gear shaft clamping, axis overlaps with X-axis, reduces clamping error to processing
The impact of precision；Dividing head clamping face cone axis of orientation neck grease is enough provides good support for ship lift gear shaft, clamping position away from
Make between dividing head and bevel gear teeth, to leave enough feed spaces more than 450mm from bevel gear teeth, use mirror image journey
Sequence is avoided when reversely processing profile of tooth producing between cutter and clamping tooling interfering, and makes the course of processing more smooth and easy, once becomes
Type better quality, in hgher efficiency；Midpoint reference circle chordal tooth thickness is reserved finish-milling tooth amount and is done standard to 1mm, the processing for subsequent fine mill teeth
Standby；The tooth top rounding of bevel gear, is avoided that corner angle scratch miscellaneous equipment or personnel, prevents stress from concentrating and meshing interference.
Bead, improves tooth fatigue strength and eliminates heat treatment stress, and finish turning, corase grind, finish-milling tooth complete the essence of ship lift gear shaft
Processing, improves the gear accuracy of mesh further.Carry out coloring rolling inspection and detect the engagement to ship lift gear shaft detection with
Inner Defect Testing, is ensured end product quality, then is processed by shot blasting finished surface by fine grinding, remove finished surface defect,
Improve finished product accuracy further.The reverse processing and manufacturing to ship lift gear shaft can be completed by the technique of this programme, produce
Ship lift gear shaft be formed in one, Forming Quality is good, and internal flaw is few, does not has mismatch error, nibble between bevel gear and axle
Conjunction precision is high, and transmission stability is good, and the vibrations and the noise that produce during use are little.
Preferred version one, based on a kind of improvement of scheme, described in tooth root is with heavy deep arc transition when rough milling tooth, heavy deep
Amount is the modulus in 0.16 times of tooth depth direction, and transverse tooth thickness direction is 0.5mm.Tooth root and the axle making gear axial cone tooth profile of tooth is so set
Between body, transition is the most smooth, and when gear shaft uses, profile of tooth bears load more uniformly, reduces stress and causes wheel in tooth root concentration
The generation of the situations such as tooth is tired, deform, fracture, leaves at tooth root when heavy deep amount makes gear shaft use and dodges surplus, when making engagement
Interference will not be produced, run more steady.
Preferred version two, preferably a kind of improvement of, in described coloring rolling inspection step, clamping bevel gear pair enters
Row engagement experiment, during underloading, in mesh regional, length direction accounts for the 45%～65% of total facewidth, and short transverse accounts for fully teeth height
50%, contact position, at the middle part of mesh regional inclined bevel gear small end, determines locating distance and sideshake, carries out underloading on rolling inspection machine
Run 5～10 minutes, detect noise≤80 decibel.There are size, status requirement, contact area ratio mistake in gear tooth contact zone
Little, the moment of torsion of transmission does not reaches requirement, and ratio is excessive, there will be meshing interference, easy broken teeth after loading.Set in mesh regional
Length direction accounts for the 45%～65% of total facewidth, and short transverse accounts for the 50% of fully teeth height, so arranges the cone tooth machined
Wheel is engaged the detection in region, can the most effectively reflect the engagement situation of gear, it is simple to solving this problem in time, reduction is asked
Topic finds that brings not in time follow-up remedies cost.
Preferred version three, preferably a kind of improvement of, described in rough mill tooth and use hard alloy cylindrical bar milling cutter, rod milling
Cutter body rough turn to bevel gear in the way of climb cutting carries out Milling Process, and cylindrical bar milling cutter feed path is parallel to the face of the rough turn body of bevel gear
Cone is arranged.Use that its Milling Speed of hard alloy cylindrical bar milling cutter is higher, machined surface quality is also preferable, and can process with sclerderm and
The workpiece of quench-hardened case, stable cutting is more preferable, and machining accuracy is higher.
Preferred version four, preferably a kind of improvement of, described material preparation step includes being warmed up to blank normalizing
930 DEG C are incubated 3 hours, are cooled to room temperature in atmosphere, then are warmed up to 680 DEG C of insulations 3 hours, then are cooled to room in atmosphere
Temperature, at the two ends chamfering bit B5 centre bore of blank, removes surface of the work oxide layer, obtains the rough turn body of bevel gear.So processing can be thin
Change the tissue of blank, reach non-metallic inclusion requirement so that it is Brinell hardness reaches HB215～235, it is simple to processing.
Preferred version five, preferably a kind of improvement of, described heat treatment step includes bevel gear except teeth
Outer remainder is incubated 8 hours at 920～930 DEG C after being coated with the antiseepage carbon-coating that 0.3mm is thick, and then air cooling is to 400～500 DEG C, then
Carrying out oil quenching after being warming up to 820～830 DEG C of insulations 4 hours, oil temperature is 60 DEG C so that tooth face hardness is HRC56～60, and core is hard
Degree is HRC30～42.This Technology for Heating Processing has the sample with stove can carry out hardness determination simultaneously, makes the surface layer of workpiece have
There are high rigidity and wearability, and the core of workpiece remains in that toughness and the plasticity of mild steel.
Preferred version six, preferably a kind of improvement of, described shot-peening step includes with the iron ore of 2.5mm cone
Gear teeth face carries out bead, and making tooth face hardness is HRC58～62.After so processing, the flank of tooth wearability of bevel gear is carried
Height, is difficult to during life-time service be worn.More number of teeth processing is used during processing profile of tooth.
Preferred version seven, based on scheme to any one improvement of preferred version six, use more tooth during processing profile of tooth
Number processing, uses more number of teeth processing, the gear teeth carries out intermittent processing, reduces tool wear and gear adds up the shadow of trueness error
Ring.
Preferred version eight, preferably a kind of improvement of seven, the ultrasonic frequency that described flaw detection step uses is
2.5MHz.The ultrasound examination effect using this frequency is more preferable, can effectively detect the extension defect of inside workpiece and intensive lack
Fall into district.
Detailed description of the invention
Below by detailed description of the invention, the present invention is further detailed explanation:
Embodiment is as follows:
Ship lift pinion processing technique, comprises the following steps:
A, get the raw materials ready, rough forging, blank normalizing is warmed up to 930 DEG C and is incubated 3 hours, be cooled to room temperature in atmosphere, then
It is warmed up to 680 DEG C and is incubated 3 hours, then be cooled to room temperature in atmosphere, at the two ends chamfering bit B5 centre bore of blank, by clamping workpiece
On lathe, the gear mass of lathe tool turner part, each stage cylindrical of gear shaft, remove surface of the work oxide layer, obtain bevel gear
Rough turn body；So process and can refine the tissue of blank, reach non-metallic inclusion requirement so that it is Brinell hardness reach HB215～
235, it is simple to processing；
B, flaw detection, detect workpiece with the ultrasound wave that frequency is 2.5MHz, and the workpiece, defect after detection allows≤φ
2mm, end ripple reduction amount≤6dB, make workpiece not produce extension defect and close defect district；
C, rough turn, lathe is taken centre frame, by rough turn for bevel gear body clamping on lathe, further by turner part tooth
Wheel body, each step cylindrical of gear shaft and length, monolateral stay 5mm surplus, repaiies two ends centre bore, and has therefrom cut the first noumenon
Sample and the second bulk sample；
D, blank are rechecked, and the first noumenon sample carries out the reinspection of chemical composition, grain size, non-metallic inclusion, to the
Two bulk sample carry out mechanical performance reinspection；Review requirement as follows:
Chemical analysis
| Element | C | Si | Mn | Cr | Ni | Mo | P | S |
| Content (%) | 0.15-0.2 | ≤0.4 | 0.4-0.6 | 1.5-1.8 | 1.4-1.7 | 0.25-0.35 | ≤0.035 | ≤0.035 |
Non-metallic inclusion
Mechanical performance after quenching, tempering
E, rough mill tooth, with hard alloy cylindrical bar milling cutter, gear mass is carried out rough milling, use its milling of hard alloy cylindrical bar milling cutter
Cutting that speed is higher, machined surface quality is also preferable, and can process the workpiece with sclerderm and quench-hardened case, stable cutting is more preferable,
Machining accuracy is higher；Creating bevel gear pair model, given correction of the flank shape is repaiied to parameter, and work in-process generates processor in the heart, will add
Engineering sequence carries out mirror image, make position, cross point by installed surface the most axially change into negative axially, all of coordinate points numerical value is just being carried out
Negative conversion, machining direction by changing into along negative X-direction along positive X-direction, along negative X-direction change into along positive X-direction, make cutter path
Teeth are in clockwise relatively；Guarantee mesh regional position, use special tooling to withstand the centre bore in workpiece face cone direction, institute
State special tooling and include lathe dividing head, tailstock and the tailstock centre being arranged on tailstock, clamping dividing head and tailstock centre, make
Dividing head is positioned at the positive X axis of tailstock, dividing head claw just to tailstock centre and distance more than 1 meter, respectively to indexing head and tail
It is levelling that seat carries out centering, makes both centres of gyration all overlap with X-axis, dividing head clamping gear face cone axis of orientation neck, clamping position
Put distance bevel gear teeth and be more than 450mm, with milling cutter, gear mass is carried out rough milling, mill out the left and right flank of tooth；Determine region of engagement
Position, cylindrical bar milling cutter body rough turn to bevel gear in the way of climb cutting carries out Milling Process, and cylindrical bar milling cutter feed path is parallel to bevel gear
The face cone of rough turn body is arranged；Use more number of teeth processing mode to mill out the left and right flank of tooth, first the left surface of tooth is processed, then to tooth
Right flank is processed, and the left surface of each tooth is processed along back cone to inner cone direction, and right flank is processed along inner cone to back cone direction,
It is processed into profile of tooth along tooth depth direction is progressive；Use more number of teeth processing, the gear teeth are carried out intermittent processing, reduce tool wear
Gear is added up the impact of trueness error；Midpoint reference circle chordal thickness reserves the finish-milling tooth amount that 1mm is thick, to flank profil chamfering 1.5
× 45 °, to tooth top rounding, tooth root is with heavy deep arc transition, and heavy deep amount is the modulus in 0.16 times of tooth depth direction, and transverse tooth thickness direction is
0.5mm, is molded as one formula ship lift gear shaft；
F, heat treatment, 920～930 DEG C of guarantors after the antiseepage carbon-coating thick for remainder painting 0.3mm in addition to teeth by bevel gear
Temperature 8 hours, then air cooling is to 400～500 DEG C, then be warming up to 820～830 DEG C insulation 4 hours after carry out oil quenching, oil temperature is 60
DEG C so that tooth face hardness is HRC56～60, and core hardness is HRC30～42；This Technology for Heating Processing has the sample with stove simultaneously
Hardness determination can be carried out, make the surface layer of workpiece have high rigidity and wearability, and the core of workpiece remains in that
The toughness of mild steel and plasticity；
G, shot-peening, carry out bead with the iron ore of 2.5mm to tooth surfaces of bevel gears, and making tooth face hardness is HRC58～62；This
Sample makes the flank of tooth wearability of bevel gear improve after processing, and is difficult to be worn during life-time service.Use more during processing profile of tooth
The number of teeth is processed；
H, finish turning, carry out finish turning to the bevel gear after bead, the bevel gear clamping after shot-peening on lathe, lathe card
Clamping back cone direction axle journal, the staight shank top end face cone direction axle journal centre bore of special tooling, lathe tool skiving wheel shaft, gear mass are each
The cylindrical of step is monolateral stays 0.3mm surplus, and end face stays 0.2mm surplus；
I, corase grind, the clamping workpiece cylindrical grinder after finish turning, Double Tops bevel gear centre bore, corase grind gear shaft, gear mass are each
The cylindrical of step, monolateral stays 0.15mm surplus, and grinding length is to finished product；
J, finish-milling tooth, the bevel gear clamping after corase grind, dividing head clamping gear back cone direction axle journal, withstands with special tooling
The centre bore in workpiece face cone direction, uses processor when rough milling tooth that the left and right flank of tooth carries out polish, and midpoint transverse tooth thickness is processed
To finished product；First processing the left surface of tooth, then be processed the right flank of tooth, the left surface of each tooth is along back cone to inner cone side
To processing, right flank is processed to back cone direction along inner cone, is processed into profile of tooth along tooth depth direction is progressive；
K, coloring rolling inspection, the gear after finish-milling tooth colours with the gear matched, and clamping bevel gear pair is engaged
Experiment, during underloading, in mesh regional, length direction accounts for the 45%～65% of total facewidth, and short transverse accounts for the 50% of fully teeth height, contact
Position, at the middle part of mesh regional inclined bevel gear small end, determines locating distance and sideshake, carries out light running 5～10 on rolling inspection machine
Minute, detect noise≤80 decibel；There are size, status requirement in gear tooth contact zone, and contact area ratio is too small, the torsion of transmission
Square does not reaches requirement, and ratio is excessive, there will be meshing interference, easy broken teeth after loading.Set length direction in mesh regional to account for
The 45%～65% of total facewidth, short transverse accounts for the 50% of fully teeth height, so arranges the bevel gear to machining and is engaged
The detection in region, can the most effectively reflect the engagement situation of gear, it is simple to solve this problem in time, reduces problem and finds too late
Time bring follow-up remedy cost；
L, detection, the finished product bevel gear after coloring rolling inspection is sent gear inspector to detect its teeth portion precision, and carries out magnetic powder spy
Wound, is allowed to linear discontinuities≤0.5 after workpiece flaw detection, circular flaw≤0.1；
M, fine grinding, refine the workpiece after detection, and fine grinding workpiece each step cylindrical is to finished product；
N, eventually inspection, the workpiece after fine grinding carries out whole inspection, checks each dimensional accuracy, and makes a record.
In the present embodiment, prepare overall raw material before processing, raw material is carried out ultrasonic examination detection, evade raw material inside and lack
Fall into, reduce the impact that gear quality is caused by raw material internal flaw.The first noumenon sample and the second body is taken the when of rough turn
Sample is respectively used to the reinspection of chemical composition, grain size, non-metallic inclusion and mechanical performance, meets the reasonable of material test
Property.When rough milling tooth, conventional processor is the processor being applicable to monomer bevel gear, by processor mirror image, makes to add man-hour
Cutter feed feed reversing, tool feeding track becomes clockwise relative to teeth, adjusts dividing head and top in clamping tooling
The relative position of point, dividing head claw just to tailstock centre and distance more than 1 meter so that can be by gear shaft face cone one during clamping
The axle of side stably firm clamping, dividing head and both centre of gyration top overlap with X-axis so that ship lift gear shaft clamping
Time axis overlap with X-axis, reduce clamping Error on Machining Accuracy impact；Dividing head clamping face cone axis of orientation neck grease is enough for rising ship
Machine gear shaft provides good support, clamping position distance bevel gear teeth to make dividing head and bevel gear teeth more than 450mm
Between leave enough feed spaces, it is to avoid between cutter and clamping tooling produce interfere；Midpoint reference circle chordal tooth thickness is pre-
Finish-milling tooth amount is stayed to prepare to 1mm, the processing for subsequent fine mill teeth；The tooth top rounding of bevel gear, be avoided that corner angle scratch its
Its equipment or personnel, prevent stress from concentrating and meshing interference.Bead, improves tooth fatigue strength and elimination heat treatment should
Power, finish turning, corase grind, finish-milling tooth complete the polish of ship lift gear shaft, improve the gear accuracy of mesh further.Carry out coloring rolling
Examine and detected the engagement detection to ship lift gear shaft and Inner Defect Testing, ensure end product quality, more right by fine grinding
Finished surface is processed by shot blasting, removes finished surface defect, improves finished product accuracy further.Can by the technique of this programme
Completing the reverse processing and manufacturing to ship lift gear shaft, the ship lift gear shaft of production is formed in one, and Forming Quality is good, internal
Defect is few, does not has mismatch error between bevel gear and axle, and the accuracy of mesh is high, and transmission stability is good, the vibrations that produce during use and
Noise is little.
Above-described is only embodiments of the invention, and in scheme, the known general knowledge such as concrete structure and/or characteristic is at this
Too much describe.It should be pointed out that, for a person skilled in the art, on the premise of without departing from present configuration, also
May be made that some deformation and improvement, these also should be considered as protection scope of the present invention, and these are real all without affecting the present invention
The effect executed and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, description
In detailed description of the invention etc. record the content that may be used for explaining claim.
Claims (9)
1. ship lift gear shaft processing technique, comprises the following steps:
A, get the raw materials ready；
B, flaw detection, detect workpiece with ultrasound wave, and the workpiece, defect after detection allows≤φ 2mm, and end ripple reduction amount≤
6dB；
C, rough turn, car goes out gear shaft and gear mass, repaiies two ends centre bore, and centre bore roughness requirements Ra1.6 is rough turn from bevel gear
The first noumenon sample and the second bulk sample is cut on body；
D, blank are rechecked, and the first noumenon sample carry out the reinspection of chemical composition, grain size, non-metallic inclusion, to second
Body sample carries out mechanical performance reinspection；
E, rough milling tooth, create bevel gear pair model, given correction of the flank shape is repaiied to parameter, and work in-process generates processor in the heart, it is ensured that
Mesh regional position, uses special tooling to withstand the centre bore in workpiece face cone direction, with milling cutter, gear mass is carried out rough milling,
Milling out the left and right flank of tooth, midpoint reference circle chordal thickness reserves the finish-milling tooth amount that 1mm is thick, to flank profil chamfering 1.5 × 45 °, to tooth top
Rounding R1, is molded as one formula ship lift gear shaft；
F, heat treatment；
G, shot-peening；
H, finish turning, carry out finish turning to the bevel gear after bead, makes that the cylindrical of each step of gear shaft, gear mass is monolateral to be stayed
0.3mm surplus, end face stays 0.2mm surplus；
I, corase grind, roughly grind gear shaft, the cylindrical of each step of gear mass, monolateral stay 0.15mm surplus, and grinding length is to finished product；
J, finish-milling tooth, carry out polish to the left and right flank of tooth, and midpoint transverse tooth thickness is worked into finished product；
K, coloring rolling inspection, carry out the dye penetrant inspection accuracy of mesh to bevel gear；
L, detection, the finished product bevel gear after coloring rolling inspection is sent gear inspector to detect its teeth portion precision, and carries out magnetic powder inspection, makes
Workpiece flaw detection after linear discontinuities≤0.5, circular flaw≤0.1；
M, fine grinding, refine the workpiece after detection, and fine grinding workpiece each step cylindrical is to finished product；
N, eventually inspection；
It is characterized in that: described in rough mill in tooth step processor carried out mirror image, make the most axial by installed surface of position, cross point
Changing into negative axial, all of coordinate points numerical value is carried out positive and negative conversion, machining direction is born X-direction by the edge that changes into along positive X-direction,
Change into along positive X-direction along negative X-direction, make cutter path relative to teeth in clockwise；Described special tooling includes lathe
Dividing head, tailstock and the tailstock centre being arranged on tailstock, clamping dividing head and tailstock centre, make dividing head just be positioned at tailstock
X axis, dividing head claw just to tailstock centre and distance more than 1 meter, it is levelling that dividing head and tailstock carry out centering respectively, makes two
The centre of gyration of person all overlaps with X-axis, dividing head clamping gear face cone axis of orientation neck, and clamping position distance bevel gear teeth are more than
450mm。
Ship lift pinion processing technique the most according to claim 1, it is characterised in that when rough milling tooth described in: tooth root with
Heavy deep arc transition, heavy deep amount is the modulus in 0.16 times of tooth depth direction, and transverse tooth thickness direction is 0.5mm.
Ship lift pinion processing technique the most according to claim 2, it is characterised in that: described coloring rolling inspection step
In, clamping bevel gear pair is engaged experiment, and during underloading, in mesh regional, length direction accounts for the 45%～65% of total facewidth, the most just
To accounting for the 50% of fully teeth height, contact position, at the middle part of mesh regional inclined bevel gear small end, determines locating distance and sideshake, in rolling inspection
Carry out light running 5～10 minutes on machine, detect noise≤80 decibel.
Ship lift pinion processing technique the most according to claim 2, it is characterised in that rough mill tooth described in: and use hard
Alloy bar milling cutter, cylindrical bar milling cutter body rough turn to bevel gear in the way of climb cutting carries out Milling Process, and cylindrical bar milling cutter feed path is parallel to
The face cone of the rough turn body of bevel gear is arranged.
Ship lift pinion processing technique the most according to claim 2, it is characterised in that: described material preparation step include by
Blank normalizing is warmed up to 930 DEG C and is incubated 3 hours, is cooled to room temperature in atmosphere, then is warmed up to 680 DEG C of insulations 3 hours, then at sky
Gas is cooled to room temperature, at the two ends chamfering bit B5 centre bore of blank, removes surface of the work oxide layer, obtain the rough turn body of bevel gear.
Ship lift pinion processing technique the most according to claim 2, it is characterised in that: described heat treatment step includes
Being incubated 8 hours at 920 ~ 930 DEG C after bevel gear remainder in addition to teeth is coated with the thick antiseepage carbon-coating of 0.3mm, then air cooling is extremely
400～500 DEG C, then be warming up to 820～830 DEG C insulation 4 hours after carry out oil quenching, oil temperature is 60 DEG C so that tooth face hardness is
HRC56～60, core hardness is HRC30～42.
Ship lift pinion processing technique the most according to claim 2, it is characterised in that: described shot-peening step includes using
The iron ore of 2.5mm carries out bead to tooth surfaces of bevel gears, and making tooth face hardness is HRC58～62.
8. according to the arbitrary described ship lift pinion processing technique of claim 1 ~ 7, it is characterised in that: adopt during processing profile of tooth
Process by the more number of teeth.
Ship lift pinion processing technique the most according to claim 8, it is characterised in that: described flaw detection step uses
Ultrasonic frequency is 2.5MHz.
Priority Applications (1)
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| CN111331065A (en) * | 2020-04-02 | 2020-06-26 | 南京德长锻造有限公司 | External gear shaft sleeve machining process and milling-cleaning integrated equipment thereof |
| CN113385904A (en) * | 2021-06-22 | 2021-09-14 | 重庆智展齿轮传动有限公司 | Vibration measuring surface treatment method for gear shaft |
| CN114536027A (en) * | 2021-12-31 | 2022-05-27 | 湖北三江航天红阳机电有限公司 | Rudder spindle processing production line |
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| CN113385904A (en) * | 2021-06-22 | 2021-09-14 | 重庆智展齿轮传动有限公司 | Vibration measuring surface treatment method for gear shaft |
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