CN108443306A - A kind of electric motor of automobile shaft and its processing method - Google Patents
A kind of electric motor of automobile shaft and its processing method Download PDFInfo
- Publication number
- CN108443306A CN108443306A CN201810584133.6A CN201810584133A CN108443306A CN 108443306 A CN108443306 A CN 108443306A CN 201810584133 A CN201810584133 A CN 201810584133A CN 108443306 A CN108443306 A CN 108443306A
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- Prior art keywords
- shaft
- section
- bearing
- main shaft
- sections
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Classifications
-
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
- F16C3/023—Shafts; Axles made of several parts, e.g. by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/60—Shaping by removing material, e.g. machining
- F16C2220/62—Shaping by removing material, e.g. machining by turning, boring, drilling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/60—Shaping by removing material, e.g. machining
- F16C2220/66—Shaping by removing material, e.g. machining by milling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/60—Shaping by removing material, e.g. machining
- F16C2220/70—Shaping by removing material, e.g. machining by grinding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/10—Hardening, e.g. carburizing, carbo-nitriding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/10—Hardening, e.g. carburizing, carbo-nitriding
- F16C2223/16—Hardening, e.g. carburizing, carbo-nitriding with carbo-nitriding
Abstract
The invention discloses a kind of electric motor of automobile shaft and its processing methods, machine shaft includes shaft shoulder section and main shaft section, bearing section there are two being set on the outside of shaft shoulder section and main shaft section, respectively bearing A sections and B sections of bearing, the side of B sections of bearing, main shaft section and shaft shoulder section is set there are two long keyway, is set there are one short keyway in main shaft section, and the end face that A sections of bearing opens up the not logical input hole there are one axial direction, it is equipped with internal spline in input hole, the end face that B section of bearing opens up that there are one the non-through-holes of axial direction.Processing method is：It forges blank → rough turn → heat treatment → half smart car → drawing tooth → keyseat → heat treatment → smart car → fine grinding → final inspection → purged and packed → and enters sequence.Rough turn, half smart car, smart car and precision grinding step are improved, avoid draw tooth process in machining benchmark deviation it is big, center hole Concentricity tolerance is big, it is unstable, the problems such as consistency is bad, shorten process time, production efficiency is greatly improved, production cost is reduced.
Description
Technical field
The present invention relates to the processing technology field of shaft, more particularly to a kind of electric motor of automobile shaft and its processing method.
Background technology
Currently, applied to the shaft in New energy automobile motor, using interior in design（Outside）Spline tooth couples by spline
The advantages of transmission torque, spline couples, contact area was big, and uniform force is felt relieved, the occasion larger suitable for bearing capacity.By
Requirement in terms of environmental protection, support and development of the country to new-energy automobile field, keeps its product development space larger, this year
Yield amplification is larger, to adapt to the demand produced in enormous quantities, such product processing technique is optimized, and to processes result
A large amount of verification experimental verification work is done, it is most suitable to be finally confirmed as current processing technology, disclosure satisfy that the technology of client
It is required that production efficiency is substantially improved simultaneously.
Currently, for this machine shaft, manufacturing enterprise is all processed using the general vehicle of tradition and numerical control lathe, because being set
Standby limitation, several important critical sizes that drawing technology requires are difficult to ensure：
A, outer circle both ends and internal spline benchmark concentricity 0.02mm；
B, inside and outside circle and false ceiling hole concentricity 0.015mm；
C, because improving following process efficiency, each geometric tolerance, excircle dimension must be worked into higher high-precision before heat treatment, this
Also it is exactly that traditional equipment is unapproachable in precision and efficiency.
In order to reach drawing requirement, technique before is：
Forge blank（It is normalizing, quenched）- rough turn-heat treatment-（Destressing）- half smart car-Double Tops roughly grind outer circle-drawing tooth-
Keyseat-heat treatment（Carbo-nitriding）- smart car-fine grinding-final inspection-cleaning packaging-storage.
In above-mentioned technique, in half smart car step, need to press from both sides shaft one end, vehicle other end inside and outside circle, then turn around folder one
End, pushes up one end, and turning finally repaiies car hole at soft claw clip workpiece 2/2, it can be seen that has in half smart car process more complex
Turn around the processes such as clamping.Must turn around in half smart car this process secondary, repeated clamping three times, and in process, especially
It is axial dimension because the error of operating personnel's clamping causes the probability of consistency difference to be significantly increased, and subsequently important technique base
Quasi- center hole concentricity is difficult to ensure, is in addition increased process scene and is increased by circulation, reduce production efficiency, increases production
Cost also can not meet customer demand.
Therefore, we have developed this new processing work for this link and the common tackling key problem of equipment manufacturer and repetition test
Skill.
Invention content
The technical problem to be solved in the present invention is to provide a kind of electric motor of automobile shaft and its processing method, the processing methods
In, it avoids drawing the problems such as machining benchmark deviation is big, and center hole Concentricity tolerance is big, unstable, and consistency is bad in tooth process, together
When reduce three steps and turn around half smart car, the processes such as half corase grinding shorten process time, greatly improve production efficiency, reduce
Production cost.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of electric motor of automobile shaft, including the shaft shoulder
Section and main shaft section, it is adjacent in shaft shoulder section and main shaft section, it is set on the outside of shaft shoulder section and main shaft section there are two bearing section, respectively axis
Hold A sections and B sections of bearing, it is characterised in that the side of B sections of the bearing, main shaft section and shaft shoulder section is set there are two long keyway,
Main shaft section is set there are one short keyway, and the end face of A section of the bearing is opened up there are one the axial input hole not led to, in input hole
Equipped with internal spline, the end face of B sections of the bearing opens up that there are one axial non-through-holes.
Above structure is described further, described two long keyway and a short keyway are respectively at shaft section
0 degree, 180 degree and 90 degree of positions.
Above structure is described further, A sections of the bearing and the concentricity of B sections of bearing and main shaft section are 0.02 milli
Rice.
Above structure is described further, 0.02 millimeter of the concentricity of the input hole and non-through-hole and main shaft section.
A kind of processing method of electric motor of automobile shaft, it is characterised in that include the following steps：
S1, countershaft blank material carry out normalizing forge processing, carried out in shaft furnace it is quenched, hardening heat be 850-950 °, firmly
Spend HRC22~27；
Two S2, rough turn shaft end faces, the outer circle in machining center hole, A sections of countershaft upper bearing (metal), B sections of bearing and main shaft section is rough turn,
Go out input hole and non-through-hole along centre drill on two end faces；
S3, the blank for obtaining S2 after rough turn carry out Tempering and Quenching, and de-stress is gone in realization；
The center hole of S4, each shaft part outer circle of half smart car shaft, length and both sides；
S5, pinion cutter need debugging to correct before gear shaping after installing, pinion cutter bounce≤0.02, are drawn in the input hole of countershaft
Tooth obtains inner spline gear；
S6, the milling long keyway on B sections of A sections of bearing, the bearing and main shaft section of shaft, the short keyway of milling, machines in main shaft section
Each keyway applies antirust oil afterwards；
S7, countershaft are heat-treated using carbo-nitriding mode；
S8, the input hole of smart car shaft and non-through-hole, and the entirely length of shaft；
S9, using numerical control external cylindrical grinding machine, each shaft end outer circle of countershaft is refined；
S10, the size for checking each shaft end of shaft after fine grinding, geometric tolerance and appearance；
S11, workpiece will be obtained after inspection carry out cleaning antirust：It removes dirt and applies antirust oil processing to get machine shaft.
In above-mentioned S2 steps, concrete technology is：
S21, shaft blank middle section to being obtained in S1 main shaft section outer circle clamp, two end faces of countershaft carry out
It is rough turn, the centering on two end faces；
S22：Folder pushes up rough turn outer circle, pushes up right end centre bore, presss from both sides main shaft section outer circle, is positioned and is clamped with shaft left side；
S23：Left end centre bore is pushed up, is clamped with main shaft section excircle orientation, positioning sleeve stationary center is drilled out using depth drill and do not led to
Hole；
S24：In radial drill or lathe, input hole is drilled out.
In above-mentioned S3 steps, 520 DEG C of furnace temperature in constant temperature oven, soaking time 3 hours is vertical to hang placement, will close
Lattice part, which is put into have, prevents colliding with, scratching, falling, in the Special station tool of anti-contamination function, is put into after defective work is marked
In defined utensil.
In above-mentioned S4 steps, using Double-head numerical controlled lathes, the main shaft section outer circle centre position of clamping fixed rotating shaft is left
Right knife tower main shaft countershaft inside and outside circle center hole position processes, i.e., clamped one time, multi-cutter one-step machine, half smart car shaft
Endoporus in each shaft part outer circle and both ends of the surface.
In above-mentioned S7 steps, case hardness HRC58~63, core hardness HRC28~35, carbo-nitriding, infiltration layer depth
0.5~0.7mm is spent, outer circle bounce≤0.05mm, cylindricity≤0.03mm, all outer circles of shaft, endoporus, teeth portion, keyway are clear
Wash clean, no greasy dirt impurity residual, each any surface finish is without rusty stain, impulse- free robustness, no bump injury.
In above-mentioned S9 steps, concrete technology is：
S91：Sand-blasting machine, the outer circle of shaft, endoporus, teeth portion, keyway sandblasting, all outer circles, endoporus, teeth portion, key way surface are bright and clean
Without rusty stain, impulse- free robustness, no bump injury, each groove edge and surface are not allow for burr, bump injury；
S92：The chamfering in the exit of input hole and non-through-hole is ground, guarantee chamfering be 60 ° of conical surfaces, roughness Ra=
0.4；
S93：Each shaft part outer ring of countershaft is refined, and using cylindrical grinder, half fine cylindrical of Double Tops checks each shaft part outer ring
Diameter, while ensureing cylindricity≤0.01 millimeter of each shaft part, it beats≤0.01 millimeter, surface roughness Ra=1.6；
S95：Smart car input hole inner wall, blows off iron filings inside holes after processing is completed；
S96:Deburring, each circle end face, seamed edge, in keyway without wedge angle burr, without iron filings, greasy residues in hole, all outer circles,
End face is without scuffing and bump injury.
It is using advantageous effect caused by above-mentioned technical proposal：Engine shaft in the present invention is the two of main shaft section
It is processed on a end face and processes non-through-hole respectively, internal spline is set in one of input hole, another non-through-hole is output end, and
Torque transmission is carried out by the way of three keyways, it is small-sized under the conditions of meeting torque output to engine shaft to realize
The advantages of changing and require, being coupled using internal spline contact area is big, and uniform force is felt relieved, the field larger suitable for bearing capacity
It closes.The processing method of the present invention, is to be adjusted to processing technology in engine shaft, using Double-head numerical controlled lathes, clamping is solid
Determine excircle of workpiece centre position, left and right knife tower main shaft processes Workpiece internal-external circle center hole position, i.e. clamped one time, multi-cutter one-step
It machines, that is, ensure that the requirement within each geometric tolerance 0.02mm, and save the material scene circulation time, it is important to produce
Product consistency and stability is preferable, is verified by batch production, the implementation of the technique, the process efficiency improve 60% with
On.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the full sectional view of Fig. 1；
Fig. 3 is A direction views in Fig. 1；
Wherein：1, bearing A sections, 2, shaft shoulder section, 3, main shaft section, 4, long keyway, 5, B sections of bearing, 6, input hole, 7, internal spline, 8,
Non- through-hole, 9, short keyway.
Specific implementation mode
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Fig. 1, it is a kind of machine shaft comprising shaft shoulder section 2 and main shaft section 3, in shaft shoulder section 2 and main shaft section 3
It is adjacent, it is set there are two bearing section, respectively bearing A sections 1 and bearing B sections 5 in the outside of shaft shoulder section 2 and main shaft section 3, B sections of bearing
5, the side of main shaft section 3 and shaft shoulder section 2 is set there are two long keyway 3, sets that there are one short keyway 9, two long keyway 3 in main shaft section 3
0 degree of shaft section, 180 degree and 90 degree of positions are respectively at a short keyway 9, are seen shown in attached drawing 3,3 keyways are for passing
Torque delivery.Machine shaft needs are connect with motor, and motor output shaft shaft is connected using internal spline, i.e., in the end face of bearing A sections 1
The not logical input hole 6 there are one axial direction is opened up, the end face of bearing B sections 5 is opened up there are one axial non-through-hole 8, therein defeated
Enter one section of side in hole 6 close to bottom and be equipped with internal spline 7, internal spline 7 coordinates in the external splines of motor output shaft, by flower
The advantages of key connecting transmits torque, and spline couples contact area is big, and uniform force feels relieved, is larger suitable for bearing capacity
Occasion.It is simultaneously through-hole in the leading portion of input hole 6, shaft can be increased in the contact length of motor output shaft, ensure that the two is matched
It closes closely, avoids loosening.
For electric motor of automobile shaft, carburizing steel is made by carbo-nitriding, and machining accuracy requires, this is interior
The spline accuracy class of spline teeth be 6 grades, tooth form tolerance is 0.03, teeth directional tolerance is 0.014, pitch tolerance 0.042,
Teeth portion dimensional tolerance 0.11, and keyway size tolerance requirements 0.04, symmetry require 0.035.In addition, in bearing A sections 1 and bearing
The concentricity of B sections 5 and main shaft section 3 is 0.02 millimeter, and 0.02 millimeter of the concentricity of input hole 6 and non-through-hole 8 and main shaft section 3 turns
Axis inside and outside circle and false ceiling hole concentricity 0.015mm；Because of batch machining, needs to improve following process efficiency, be heat-treated
Preceding each geometric tolerance, excircle dimension must be worked into higher high-precision, this is also exactly that traditional equipment is difficult to reach in precision and efficiency
It arrives.
In order to meet reduction transfer accounts manufacturing procedure scene circulation, improve production efficiency, the traditional processing technology of countershaft into
Optimization is gone, new technological flow is：Forge blank（It is normalizing, quenched）Rough turn-heat treatment（Destressing）- half smart car（Double-end vehicle）-
Draw tooth-keyseat-heat treatment（Carbo-nitriding）Smart car-fine grinding-final inspection-purged and packed-enters sequence.
By the experiment of multiple bonding apparatus characteristic, double of smart car this process is adjusted.Use Double end digital control vehicle
Bed, clamping fix excircle of workpiece centre position, and left and right knife tower main shaft processes Workpiece internal-external circle center hole position, i.e. clamped one time,
Multi-cutter one-step machines, that is, ensure that the requirement within each geometric tolerance 0.02mm, but save material scene circulation when
Between, it is important to homogeneity of product and stability are preferable, are verified by batch production, the implementation of the technique, the process efficiency
Improve 60% or more.Rough turn, smart car and precision grinding step are improved simultaneously, it is made to meet the requirement of shaft processing technology.
For machine shaft again during actual processing, manufacturing procedure is as follows：
S1, countershaft blank material carry out normalizing forge processing, carried out in shaft furnace it is quenched, hardening heat be 850-950 °, firmly
Spend HRC22~27；
Two S2, rough turn shaft end faces, the outer circle in machining center hole, countershaft upper bearing (metal) A sections 1, bearing B sections 5 and main shaft section 3 are thick
Vehicle goes out input hole 6 and non-through-hole 8 on two end faces along centre drill；
S3, shaft blank middle section to being obtained in S1 main shaft section outer circle clamp, two end faces of countershaft carry out
It is rough turn, the centering on two end faces；
S4：Folder pushes up rough turn outer circle, pushes up right end centre bore, and 3 outer circle of folder main shaft section is positioned with shaft left side and clamped；
S5：Left end centre bore is pushed up, is clamped with 3 excircle orientation of main shaft section, positioning sleeve stationary center drills out non-through-hole using depth drill
8；
S6：In radial drill or lathe, input hole 6 is drilled out.
S7, the blank progress Tempering and Quenching for obtaining S2 after rough turn, 520 DEG C of furnace temperature in constant temperature oven, soaking time 3 are small
When, vertical suspension is placed, and de-stress is gone in realization.Qualified parts are put into have it is anti-collide with, scratch, falling, anti-contamination function it is special
In the utensil as defined in being put into after in working position apparatus, defective work is marked；
S8, Double-head numerical controlled lathes, the 3 outer circle centre position of main shaft section of clamping fixed rotating shaft, left and right knife tower main shaft countershaft are used
Inside and outside circle center hole position processes, i.e., clamped one time, multi-cutter one-step machine, each shaft part outer circle of half smart car shaft and two
Endoporus on end face.
S9, pinion cutter need debugging to correct before gear shaping after installing, pinion cutter bounce≤0.02, in the input hole 6 of countershaft
Drawing tooth is carried out, inner spline gear is obtained；
S10, the milling long keyway 4 in the bearing A sections 1, bearing B sections 5 and main shaft section 3 of shaft, the short keyway 9 of milling, adds in main shaft section 3
Each keyway applies antirust oil after the completion of work；
S11, countershaft are heat-treated using carbo-nitriding mode, case hardness HRC58~63, core hardness HRC28~35,
Carbo-nitriding, 0.5~0.7mm of depth of penetration, outer circle bounce≤0.05mm, cylindricity≤0.03mm are all outer circles of shaft, interior
Hole, teeth portion, keyway clean up, and no greasy dirt impurity residual, each any surface finish is without rusty stain, impulse- free robustness, no bump injury；
S12, the input hole 6 of smart car shaft and non-through-hole 8, and the entirely length of shaft；
S13, using numerical control external cylindrical grinding machine, each shaft end outer circle of countershaft is refined；
S14：Sand-blasting machine, the outer circle of shaft, endoporus, teeth portion, keyway sandblasting, all outer circles, endoporus, teeth portion, key way surface are bright and clean
Without rusty stain, impulse- free robustness, no bump injury, each groove edge and surface are not allow for burr, bump injury；
S15：The chamfering in the exit of input hole 6 and non-through-hole 8 is ground, guarantee chamfering is 60 ° of conical surfaces, roughness Ra
=0.4；
S16：Each shaft part outer ring of countershaft is refined, and using cylindrical grinder, half fine cylindrical of Double Tops checks each shaft part outer ring
Diameter, while ensureing cylindricity≤0.01 millimeter of each shaft part, it beats≤0.01 millimeter, surface roughness Ra=1.6；
S17：6 inner wall of smart car input hole, blows off iron filings inside holes after processing is completed；
S18:Deburring, each circle end face, seamed edge, in keyway without wedge angle burr, it is all outer without iron filings, greasy residues in hole
Circle, end face are without scuffing and bump injury；
S19, the size for checking each shaft end of shaft after fine grinding, geometric tolerance and appearance；
S20, workpiece will be obtained after inspection carry out cleaning antirust：It removes dirt and applies antirust oil processing to get machine shaft.
Using above-mentioned processing technology, each benchmark is difficult to ensure before can solving the problems, such as shaft internal spline drawing tooth：A, tooth is drawn
Datum drift leads to teeth portion and the decentraction of bearing position；B, holoaxial Concentricity tolerance；C, repeatedly falling clamping processing causes product consistent
Property is poor, to influence production efficiency.
Claims (10)
1. a kind of electric motor of automobile shaft, including shaft shoulder section（2）With main shaft section（3）, in shaft shoulder section（2）With main shaft section（3）It is adjacent,
Shaft shoulder section（2）With main shaft section（3）Outside set there are two bearing section, respectively bearing A sections（1）With B sections of bearing（5）, feature
It is B sections of the bearing（5）, main shaft section（3）With shaft shoulder section（2）Side set there are two long keyway（3）, in main shaft section（3）
If there are one short keyways（9）, A sections of the bearing（1）End face open up that there are one axial not logical input holes（6）, input
Hole（6）It is interior to be equipped with internal spline（7）, B sections of the bearing（5）End face open up that there are one axial non-through-holes（8）.
2. a kind of electric motor of automobile shaft according to claim 1, it is characterised in that two long keyway（3）With one
Short keyway（9）It is respectively at 0 degree of shaft section, 180 degree and 90 degree of positions.
3. a kind of electric motor of automobile shaft according to claim 1, it is characterised in that A sections of the bearing（1）With B sections of bearing
（5）With main shaft section（3）Concentricity be 0.02 millimeter.
4. a kind of electric motor of automobile shaft according to claim 1, it is characterised in that the input hole（6）Non- through-hole
（8）With main shaft section（3）0.02 millimeter of concentricity.
5. a kind of processing method of electric motor of automobile shaft, it is characterised in that include the following steps：
S1, countershaft blank material carry out normalizing forge processing, carried out in shaft furnace it is quenched, hardening heat be 850-950 °, firmly
Spend HRC22~27；
Two S2, rough turn shaft end faces, machining center hole, A sections of countershaft upper bearing (metal)（1）, B sections of bearing（5）With main shaft section（3）'s
Outer circle is rough turn, goes out input hole along centre drill on two end faces（6）Non- through-hole（8）；
S3, the blank for obtaining S2 after rough turn carry out Tempering and Quenching, and de-stress is gone in realization；
The center hole of S4, each shaft part outer circle of half smart car shaft, length and both sides；
S5, pinion cutter need debugging to correct before gear shaping after installing, pinion cutter bounce≤0.02, the input hole of countershaft（6）It is interior into
Row draws tooth, obtains inner spline gear；
S6, A sections of the bearing in shaft（1）, B sections of bearing（5）With main shaft section（3）Upper milling long keyway（4）, in main shaft section（3）Upper milling
Short keyway（9）, after processing is completed each keyway apply antirust oil；
S7, countershaft are heat-treated using carbo-nitriding mode；
The input hole of S8, smart car shaft（6）Non- through-hole（8）, and the entirely length of shaft；
S9, using numerical control external cylindrical grinding machine, each shaft end outer circle of countershaft is refined；
S10, the size for checking each shaft end of shaft after fine grinding, geometric tolerance and appearance；
S11, workpiece will be obtained after inspection carry out cleaning antirust：It removes dirt and applies antirust oil processing to get machine shaft.
6. a kind of processing method of electric motor of automobile shaft according to claim 5, it is characterised in that specific in S2 steps
Technique is：
S21, shaft blank middle section to being obtained in S1 main shaft section outer circle clamp, two end faces of countershaft carry out
It is rough turn, the centering on two end faces；
S22：Folder pushes up rough turn outer circle, pushes up right end centre bore, presss from both sides main shaft section（3）Outer circle is positioned with shaft left side and is clamped；
S23：Left end centre bore is pushed up, with main shaft section（3）Excircle orientation clamps, and positioning sleeve stationary center is drilled out not using depth drill
Through-hole（8）；
S24：In radial drill or lathe, input hole is drilled out（6）.
7. a kind of processing method of electric motor of automobile shaft according to claim 5, it is characterised in that in S3 steps, in constant temperature
520 DEG C of furnace temperature in stove, soaking time 3 hours, vertical suspension are placed, qualified parts are put into have it is anti-collide with, scratch, falling,
In the Special station tool of anti-contamination function, it is put into after defective work is marked in defined utensil.
8. a kind of processing method of electric motor of automobile shaft according to claim 5, it is characterised in that in S4 steps, using double
Head numerically controlled lathe, the main shaft section of clamping fixed rotating shaft（3）Outer circle centre position, left and right knife tower main shaft countershaft inside and outside circle center hole
Position processing, i.e., clamped one time, multi-cutter one-step machine, interior in each shaft part outer circle and both ends of the surface of half smart car shaft
Hole.
9. a kind of processing method of electric motor of automobile shaft according to claim 5, it is characterised in that in S7 steps, surface is hard
Spend HRC58~63, core hardness HRC28~35, carbo-nitriding, 0.5~0.7mm of depth of penetration, outer circle bounce≤0.05mm, circle
Column degree≤0.03mm, all outer circles of shaft, endoporus, teeth portion, keyway clean up, no greasy dirt impurity residual, each any surface finish
Without rusty stain, impulse- free robustness, no bump injury.
10. a kind of processing method of electric motor of automobile shaft according to claim 5, it is characterised in that in S9 steps, tool
Body technology is：
S91：Sand-blasting machine, the outer circle of shaft, endoporus, teeth portion, keyway sandblasting, all outer circles, endoporus, teeth portion, key way surface are bright and clean
Without rusty stain, impulse- free robustness, no bump injury, each groove edge and surface are not allow for burr, bump injury；
S92：To input hole（6）Non- through-hole（8）The chamfering in exit be ground, guarantee chamfering is 60 ° of conical surfaces, coarse
Spend Ra=0.4；
S93：Each shaft part outer ring of countershaft is refined, and using cylindrical grinder, half fine cylindrical of Double Tops checks each shaft part outer ring
Diameter, while ensureing cylindricity≤0.01 millimeter of each shaft part, it beats≤0.01 millimeter, surface roughness Ra=1.6；
S95：Smart car input hole（6）Inner wall blows off iron filings inside holes after processing is completed；
S96:Deburring, each circle end face, seamed edge, in keyway without wedge angle burr, it is all outer without iron filings, greasy residues in hole
Circle, end face are without scuffing and bump injury.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810584133.6A CN108443306A (en) | 2018-06-08 | 2018-06-08 | A kind of electric motor of automobile shaft and its processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810584133.6A CN108443306A (en) | 2018-06-08 | 2018-06-08 | A kind of electric motor of automobile shaft and its processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108443306A true CN108443306A (en) | 2018-08-24 |
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ID=63206863
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810584133.6A Withdrawn CN108443306A (en) | 2018-06-08 | 2018-06-08 | A kind of electric motor of automobile shaft and its processing method |
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| Country | Link |
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| CN (1) | CN108443306A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939715A (en) * | 2019-11-19 | 2020-03-31 | 湖北坚丰科技股份有限公司 | Gear shaft of new energy automobile speed reducer and manufacturing process thereof |
| CN113601120A (en) * | 2021-08-16 | 2021-11-05 | 无锡阳光精机有限公司 | Machining method for electric spindle pull rod of automatic loosening broach |
-
2018
- 2018-06-08 CN CN201810584133.6A patent/CN108443306A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939715A (en) * | 2019-11-19 | 2020-03-31 | 湖北坚丰科技股份有限公司 | Gear shaft of new energy automobile speed reducer and manufacturing process thereof |
| CN113601120A (en) * | 2021-08-16 | 2021-11-05 | 无锡阳光精机有限公司 | Machining method for electric spindle pull rod of automatic loosening broach |
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