CN110421326A - A kind of processing technology of nutating gear - Google Patents
A kind of processing technology of nutating gear Download PDFInfo
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- CN110421326A CN110421326A CN201910664992.0A CN201910664992A CN110421326A CN 110421326 A CN110421326 A CN 110421326A CN 201910664992 A CN201910664992 A CN 201910664992A CN 110421326 A CN110421326 A CN 110421326A
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- toothed disc
- geared sleeve
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- face
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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 processing technologys of a kind of nutating gear, it is characterised in that: using toothed disc and geared sleeve is first individually processed, then again by toothed disc and geared sleeve Combined machining；Wherein, the independent procedure of processing of the toothed disc includes: forging；Smart car first end face and the first inner hole；Smart car second end face, the first outer circle and heavy platform；Brill or punching；Gear hobbing；Deburring；It examines；The independent procedure of processing of geared sleeve includes: forging；Smart car third end face, the second inner hole and the second outer circle；The 4th end face of smart car and step outer circle；Carburizing heat treatment；Vehicle welding groove and vehicle remove the carburized layer on the 4th end face；Wherein, the toothed disc and geared sleeve assembly processing step include: toothed disc and geared sleeve press fitting assembly；Toothed disc and geared sleeve are welded as a whole；Heat treatment；The second inner hole and the second outer circle of smart car geared sleeve.Nutating gear manufacture processing has can be achieved in the present invention, can solve its different parts carburized (case) depth and require different technical problems.
Description
Technical field
The invention belongs to the processing technologys of a kind of nutating gear.
Background technique
Starting one-way clutch principle is one-way engagement, reversed to disengage.When activated, generally by starting motor (or start
Motor etc.), then rotated by one-way clutch band dynamic crankshaft, the revolving speed due at this moment starting motor is higher than engine (engine
It is opposing stationary or very low in prestart revolving speed), it is single since its revolving speed is higher than the revolving speed of starting motor after engine start
It is exactly to rotate backward relative to crankshaft to clutch, so just the rotation of starting motor and engine is disengaged, is started with protecting
Motor avoids damaging.And playing nutating gear is a key part for starting one-way clutch work.
Referring to Fig. 1, existing nutating gear (referring to Fig. 1) processing technology are as follows: forging-machining to design size-
Heat treatment-inspection-storage.When manufacturing, discovery has the following disadvantages and is analyzed as follows:
First, since this plays nutating gear using machining, it is big that there are waste cut materials, leads to processing cost height；
Second, irregular due to playing nutating gear shape, it is that cannot be filled using overlapping that this, which plays nutating gear in gear hobbing,
Batch machining after folder, can only single-piece work, work reduce at double；
Third, since the gear pan portion and geared sleeve portion hardness, carburized (case) depth that play nutating gear require difference (can join
See Fig. 1), and existing heat treatment is not able to satisfy differentiation and requires；
4th, it is reprocessed after being heat-treated carburizing and quenching according to the fluted disc portion for playing nutating gear, there are gear pan portions
It is big in teeth portion gear hobbing process difficulty, the high problem of scrappage.
Summary of the invention
In order to which in view of above-mentioned one or more defects exist in the prior art, the present invention provides a kind of starting driving cogs
The processing technology of wheel.
To achieve the above object, the present invention provides the processing technologys of a kind of nutating gear, it is characterised in that: uses
Toothed disc (N) and geared sleeve (M) are first individually processed, then again by toothed disc (N) and geared sleeve (M) Combined machining；
Wherein, the toothed disc (N) uses 20CrMo material, and its independent procedure of processing includes:
A1 it) forges, to obtain blank；
A2) smart car first end face (N-1) and the first inner hole (N-2)；
A3) smart car second end face (N-3), the first outer circle (N-4) and heavy platform (N-5)；
A4) brill or punching (N-6)；
A5) gear hobbing (N-7)；
A6) deburring；
A7 it) examines；
Wherein, the geared sleeve (M) uses 20CrMo material, and its independent procedure of processing includes:
B1 it) forges, to obtain blank；
B2) smart car third end face (M-1), the second inner hole (M-2) and the second outer circle (M-3)；
B3) the 4th end face (M-4) of smart car and step outer circle (M-5)；
B4) carburizing is heat-treated；
B5) vehicle welding groove (M-6) and vehicle remove the carburized layer on the 4th end face (M-4)；
B6 it) examines；
Wherein, the toothed disc (N) and geared sleeve (M) assembly processing step include:
C1) toothed disc (N) and geared sleeve (M) press fitting assembly；
C2) toothed disc (N) and geared sleeve (M) are welded as a whole；
C3 it) is heat-treated；
C4) heat treatment is examined；
C5) ball blast；
C6) the second inner hole (M-2) and the second outer circle (M-3) of smart car geared sleeve (M)；
C7 it) examines；
C8) cleaning rust-proof；
C9 it) is put in storage.
Toothed disc (N) blank obtained after preferably, wherein step a1) forging, it is desirable that the hardness HB165- of its blank
220。
Preferably, the b4) carburizing heat treatment the following steps are included:
Heating treatment is heated to 820 ± 10 DEG C with 20 ± 5 DEG C/min of heating rate, carbon potential 0.7 ± 0.05%；
Isothermal processes, isothermal heats under the conditions of 920 ± 5 DEG C, and soaking time is 45 ± 5 minutes, and carbon potential 0.8 ±
0.05%；
Carburization Treatment, 920 ± 5 DEG C of carburizing temperature, carburizing time 315 ± 10 minutes, carbon potential 1.2 ± 0.05%；
DIFFUSION TREATMENT, 920 ± 10 DEG C of diffusion temperature, diffusion time 185 ± 10 minutes, carbon potential 0.72 ± 0.02%；
Cooling treatment, in furnace plus protective atmosphere is cooling.
Preferably, the c2) after toothed disc (N) and geared sleeve (M) be welded as a whole, it is desirable that anti-de- power is greater than 240N.
Preferably, the c2) after toothed disc (N) and geared sleeve (M) be welded as a whole, weld seam protrudes first end face (N-
1) it requires to be less than 0.5mm.
Preferably, the c3) heat treatment the following steps are included:
Heating treatment is heated to 800 ± 10 DEG C with 20 ± 5 DEG C/min of heating rate, carbon potential 0.6 ± 0.05%；
Isothermal processes, isothermal heats under the conditions of 860 ± 5 DEG C, and soaking time is 30 ± 5 minutes, and carbon potential 0.85 ±
0.05%；
Carburization Treatment, 860 ± 5 DEG C of carburizing temperature, carburizing time 75 ± 10 minutes, carbon potential 1.05 ± 0.05%；
DIFFUSION TREATMENT, 860 ± 10 DEG C of diffusion temperature, diffusion time 25 ± 10 minutes, carbon potential 0.75 ± 0.02%；
Quenching treatment, 800 ± 5 DEG C of hardening heat, using oil quenching, 100 ± 5 DEG C of oil temperature, the cool time 30 ± 2 minutes, carbon
Gesture 0.9 ± 0.02%；
Tempering, 170 ± 10 DEG C of tempering temperature, tempering time 120-150 minutes.
Preferably, the c5) ball blast with following technique requirement: use Q236 crawler belt shot-blasting machine, select
Shot, ball blast electric current 15-18A, the ball blast time 50-70 minutes, 150 ± 10kg of workpiece total weight of every batch of institute's ball blast processing.
Preferably, c4) it is heat-treated and examines with the requirement of following technique: the surface hardness HRC54-62 of the toothed disc (N),
Carburized (case) depth 0.3-0.5mm, core hardness HRC30-45；Geared sleeve (M) the surface hardness HRC60-64, carburized (case) depth
1.3-1.5mm core hardness HRC30-45.
The invention has the advantages that:
First, the present invention is using nutating gear prior art process has been different from, using first parts processing, to geared sleeve
First carburizing processing, then be heat-treated again after being integrated after assembly welding, can solve its different parts carburized (case) depth require it is different
Technical problem；
Second, the present invention does not need after heat treatment gear hobbing process again, and the technique difficulty of processing of raising can greatly reduce
Rejection rate；
Third, the present invention are using more optimized reasonable distribution heat treatment process, are playing the different location of nutating gear
Core hardness and surface hardness can reach design technical parameter requirement, and meet the working condition requirements such as wear-resisting, impact resistance；
4th, present invention optimizes machining steps, each corresponding size on nutating gear, position degree essence can have been met
Degree requires；
5th, overlap mode clamping (reference can be made to Fig. 5) can be used since the two sides disk of toothed disc is smooth in the present invention
Batch gear hobbing process afterwards, the prior art that compares structure due to shape limit and can only single clamping feature, the present invention can be at double
Improve processing efficiency；
6th, for the present invention since machining is respectively adopted in the toothed disc and geared sleeve, reserved machining allowance can be smaller,
Therefore amount of waste is few, and the cost of material is low；
7th, the rational technology process design in each step of the present invention, every optimization such as parameter, model and rationally control,
Qualification rate after having can guarantee nutating gear processing can guarantee that process stabilizing, rejection rate is lower 99% or more, can
Meet the requirement that product carries out batch, steady production, and processing efficiency is higher, there is significant economic benefit.
Detailed description of the invention
Fig. 1 has been nutating gear using the schematic diagram of product structure after the processing of existing processing technology.
Fig. 2 is the structural schematic diagram after toothed disc of the present invention is individually processed.
Fig. 3 is the structural schematic diagram after geared sleeve of the present invention is individually processed.
Fig. 4 is the structural schematic diagram when toothed disc N and geared sleeve M assembly welding have been become nutating gear.
Fig. 5 be toothed disc in gear hobbing process using it is a kind of be overlapped installation way working state figure.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
Embodiment one: the processing technology of a kind of nutating gear uses and first individually processes toothed disc N and gear
M is covered, then again by toothed disc N and geared sleeve M Combined machining；
Wherein, reference can be made to Fig. 2, the toothed disc N use 20CrMo material, and its independent procedure of processing includes:
A1 it) forges, to obtain blank；
A2) smart car first end face N-1 and the first inner hole N-2；
A3) smart car second end face N-3, the first outer circle N-4 and heavy platform N-5；
A4) brill or punching N-6；
A5) gear hobbing N-7；
A6) deburring；
A7 it) examines；
Wherein, reference can be made to Fig. 3, the geared sleeve M use 20CrMo material, and its independent procedure of processing includes:
B1 it) forges, to obtain blank；
B2) smart car third end face M-1, the second inner hole M-2 and the second outer circle M-3；
B3) the 4th end face M-4 of smart car and step outer circle M-5；
B4) carburizing is heat-treated；
B5) vehicle welding groove M-6 and vehicle remove the carburized layer on the 4th end face M-4；
B6 it) examines；
Wherein, reference can be made to Fig. 4, the toothed disc N and geared sleeve M assembly processing step include:
C1) toothed disc N and geared sleeve M press fitting assembly；
C2) toothed disc N and geared sleeve M are welded as a whole；
C3 it) is heat-treated；
C4) heat treatment is examined；
C5) ball blast；
C6) the second inner hole M-2 and the second outer circle M-3 of smart car geared sleeve M；
C7 it) examines；
C8) cleaning rust-proof；
C9 it) is put in storage.
The toothed disc N blank obtained after preferably, wherein step a1) forging, it is desirable that the hardness HB165-220 of its blank.
Preferably, the b4) carburizing heat treatment the following steps are included:
Heating treatment is heated to 820 ± 10 DEG C with 20 ± 5 DEG C/min of heating rate, carbon potential 0.7 ± 0.05%；
Isothermal processes, isothermal heats under the conditions of 920 ± 5 DEG C, and soaking time is 45 ± 5 minutes, and carbon potential 0.8 ±
0.05%；
Carburization Treatment, 920 ± 5 DEG C of carburizing temperature, carburizing time 315 ± 10 minutes, carbon potential 1.2 ± 0.05%；
DIFFUSION TREATMENT, 920 ± 10 DEG C of diffusion temperature, diffusion time 185 ± 10 minutes, carbon potential 0.72 ± 0.02%；
Cooling treatment, in furnace plus protective atmosphere is cooling.Protective atmosphere, which refers to, to be prevented from aoxidizing when workpiece is cooling because of high temperature, benefit
Protection atmosphere is formed with inert gas or reducibility gas, while playing the role of heat transfer.The indifferent gas such as helium, argon gas can be used
Body makes workpiece from the influence of ambient atmos.
Preferably, the c2) after toothed disc N and geared sleeve M be welded as a whole, it is desirable that anti-de- power is greater than 240N.
Preferably, the c2) after toothed disc N and geared sleeve M be welded as a whole, weld seam protrudes first end face N-1 requirement
Less than 0.5mm.
Preferably, the c3) heat treatment the following steps are included:
Heating treatment is heated to 800 ± 10 DEG C with 20 ± 5 DEG C/min of heating rate, carbon potential 0.6 ± 0.05%；
Isothermal processes, isothermal heats under the conditions of 860 ± 5 DEG C, and soaking time is 30 ± 5 minutes, and carbon potential 0.85 ±
0.05%；
Carburization Treatment, 860 ± 5 DEG C of carburizing temperature, carburizing time 75 ± 10 minutes, carbon potential 1.05 ± 0.05%；
DIFFUSION TREATMENT, 860 ± 10 DEG C of diffusion temperature, diffusion time 25 ± 10 minutes, carbon potential 0.75 ± 0.02%；
Quenching treatment, 800 ± 5 DEG C of hardening heat, using oil quenching, 100 ± 5 DEG C of oil temperature, the cool time 30 ± 2 minutes, carbon
Gesture 0.9 ± 0.02%；
Tempering, 170 ± 10 DEG C of tempering temperature, tempering time 120 minutes.
Preferably, the c5) ball blast with following technique requirement: use Q236 crawler belt shot-blasting machine, selectSteel
Ball, ball blast electric current 15A, the ball blast time 50 minutes, 150 ± 10kg of workpiece total weight of every batch of institute's ball blast processing.
Preferably, c4) it is heat-treated and examines with the requirement of following technique: the surface hardness HRC54-62 of the toothed disc N seeps
Carbon-coating depth (or carburized (case) depth) 0.3-0.5mm, core hardness HRC30-45；The geared sleeve M surface hardness HRC60-
64, carburized (case) depth (or carburized (case) depth) 1.3-1.5mm, core hardness HRC30-45.
Embodiment two: the processing technology of a kind of nutating gear uses and first individually processes toothed disc N and gear
M is covered, then again by toothed disc N and geared sleeve M Combined machining；
Wherein, reference can be made to Fig. 2, the toothed disc N use 20CrMo material, and its independent procedure of processing includes:
A1 it) forges, to obtain blank；
A2) smart car first end face N-1 and the first inner hole N-2；
A3) smart car second end face N-3, the first outer circle N-4 and heavy platform N-5；
A4) brill or punching N-6；
A5) gear hobbing N-7；
A6) deburring；
A7 it) examines；
Wherein, reference can be made to Fig. 3, the geared sleeve M use 20CrMo material, and its independent procedure of processing includes:
B1 it) forges, to obtain blank；
B2) smart car third end face M-1, the second inner hole M-2 and the second outer circle M-3；
B3) the 4th end face M-4 of smart car and step outer circle M-5；
B4) carburizing is heat-treated；
B5) vehicle welding groove M-6 and vehicle remove the carburized layer on the 4th end face M-4；
B6 it) examines；
Wherein, reference can be made to Fig. 4, the toothed disc N and geared sleeve M assembly processing step include:
C1) toothed disc N and geared sleeve M press fitting assembly；
C2) toothed disc N and geared sleeve M are welded as a whole；
C3 it) is heat-treated；
C4) heat treatment is examined；
C5) ball blast；
C6) the second inner hole M-2 and the second outer circle M-3 of smart car geared sleeve M；
C7 it) examines；
C8) cleaning rust-proof；
C9 it) is put in storage.
The toothed disc N blank obtained after preferably, wherein step a1) forging, it is desirable that the hardness HB165-220 of its blank.
Preferably, the b4) carburizing heat treatment the following steps are included:
Heating treatment is heated to 820 ± 10 DEG C with 20 ± 5 DEG C/min of heating rate, carbon potential 0.7 ± 0.05%；
Isothermal processes, isothermal heats under the conditions of 920 ± 5 DEG C, and soaking time is 45 ± 5 minutes, and carbon potential 0.8 ±
0.05%；
Carburization Treatment, 920 ± 5 DEG C of carburizing temperature, carburizing time 315 ± 10 minutes, carbon potential 1.2 ± 0.05%；
DIFFUSION TREATMENT, 920 ± 10 DEG C of diffusion temperature, diffusion time 185 ± 10 minutes, carbon potential 0.72 ± 0.02%；
Cooling treatment, in furnace plus protective atmosphere is cooling.
Preferably, the c2) after toothed disc N and geared sleeve M be welded as a whole, it is desirable that anti-de- power is greater than 240N.
Preferably, the c2) after toothed disc N and geared sleeve M be welded as a whole, weld seam protrudes first end face N-1 requirement
Less than 0.5mm.
Preferably, the c3) heat treatment the following steps are included:
Heating treatment is heated to 800 ± 10 DEG C with 20 ± 5 DEG C/min of heating rate, carbon potential 0.6 ± 0.05%；
Isothermal processes, isothermal heats under the conditions of 860 ± 5 DEG C, and soaking time is 30 ± 5 minutes, and carbon potential 0.85 ±
0.05%；
Carburization Treatment, 860 ± 5 DEG C of carburizing temperature, carburizing time 75 ± 10 minutes, carbon potential 1.05 ± 0.05%；
DIFFUSION TREATMENT, 860 ± 10 DEG C of diffusion temperature, diffusion time 25 ± 10 minutes, carbon potential 0.75 ± 0.02%；
Quenching treatment, 800 ± 5 DEG C of hardening heat, using oil quenching, 100 ± 5 DEG C of oil temperature, the cool time 30 ± 2 minutes, carbon
Gesture 0.9 ± 0.02%；
Tempering, 170 ± 10 DEG C of tempering temperature, tempering time 130 minutes.
Preferably, the c5) ball blast with following technique requirement: use Q236 crawler belt shot-blasting machine, selectSteel
Ball, ball blast electric current 15-18A, the ball blast time 60 minutes, 150 ± 10kg of workpiece total weight of every batch of institute's ball blast processing.
Preferably, c4) it is heat-treated and examines with the requirement of following technique: the surface hardness HRC54-62 of the toothed disc N seeps
Carbon-coating depth (or carburized (case) depth) 0.3-0.5mm, core hardness HRC30-45；The geared sleeve M surface hardness HRC60-
64, carburized (case) depth (or carburized (case) depth) 1.3-1.5mm, core hardness HRC30-45.
Embodiment three: the processing technology of a kind of nutating gear uses and first individually processes toothed disc N and gear
M is covered, then again by toothed disc N and geared sleeve M Combined machining；
Wherein, reference can be made to Fig. 2, the toothed disc N use 20CrMo material, and its independent procedure of processing includes:
A1 it) forges, to obtain blank；
A2) smart car first end face N-1 and the first inner hole N-2；
A3) smart car second end face N-3, the first outer circle N-4 and heavy platform N-5；
A4) brill or punching N-6；
A5) gear hobbing N-7；
A6) deburring；
A7 it) examines；
Wherein, reference can be made to Fig. 3, the geared sleeve M use 20CrMo material, and its independent procedure of processing includes:
B1 it) forges, to obtain blank；
B2) smart car third end face M-1, the second inner hole M-2 and the second outer circle M-3；
B3) the 4th end face M-4 of smart car and step outer circle M-5；
B4) carburizing is heat-treated；
B5) vehicle welding groove M-6 and vehicle remove the carburized layer on the 4th end face M-4；
B6 it) examines；
Wherein, reference can be made to Fig. 4, the toothed disc N and geared sleeve M assembly processing step include:
C1) toothed disc N and geared sleeve M press fitting assembly；
C2) toothed disc N and geared sleeve M are welded as a whole；
C3 it) is heat-treated；
C4) heat treatment is examined；
C5) ball blast；
C6) the second inner hole M-2 and the second outer circle M-3 of smart car geared sleeve M；
C7 it) examines；
C8) cleaning rust-proof；
C9 it) is put in storage.
The toothed disc N blank obtained after preferably, wherein step a1) forging, it is desirable that the hardness HB165-220 of its blank.
Preferably, the b4) carburizing heat treatment the following steps are included:
Heating treatment is heated to 820 ± 10 DEG C with 20 ± 5 DEG C/min of heating rate, carbon potential 0.7 ± 0.05%；
Isothermal processes, isothermal heats under the conditions of 920 ± 5 DEG C, and soaking time is 45 ± 5 minutes, and carbon potential 0.8 ±
0.05%；
Carburization Treatment, 920 ± 5 DEG C of carburizing temperature, carburizing time 315 ± 10 minutes, carbon potential 1.2 ± 0.05%；
DIFFUSION TREATMENT, 920 ± 10 DEG C of diffusion temperature, diffusion time 185 ± 10 minutes, carbon potential 0.72 ± 0.02%；
Cooling treatment, in furnace plus protective atmosphere is cooling.
Preferably, the c2) after toothed disc N and geared sleeve M be welded as a whole, it is desirable that anti-de- power is greater than 240N.
Preferably, the c2) after toothed disc N and geared sleeve M be welded as a whole, weld seam protrudes first end face N-1 requirement
Less than 0.5mm.
Preferably, the c3) heat treatment the following steps are included:
Heating treatment is heated to 800 ± 10 DEG C with 20 ± 5 DEG C/min of heating rate, carbon potential 0.6 ± 0.05%；
Isothermal processes, isothermal heats under the conditions of 860 ± 5 DEG C, and soaking time is 30 ± 5 minutes, and carbon potential 0.85 ±
0.05%；
Carburization Treatment, 860 ± 5 DEG C of carburizing temperature, carburizing time 75 ± 10 minutes, carbon potential 1.05 ± 0.05%；
DIFFUSION TREATMENT, 860 ± 10 DEG C of diffusion temperature, diffusion time 25 ± 10 minutes, carbon potential 0.75 ± 0.02%；
Quenching treatment, 800 ± 5 DEG C of hardening heat, using oil quenching, 100 ± 5 DEG C of oil temperature, the cool time 30 ± 2 minutes, carbon
Gesture 0.9 ± 0.02%；
Tempering, 170 ± 10 DEG C of tempering temperature, tempering time 150 minutes.
Preferably, the c5) ball blast with following technique requirement: use Q236 crawler belt shot-blasting machine, selectShot,
Ball blast electric current 18A, the ball blast time 70 minutes, 150 ± 10kg of workpiece total weight of every batch of institute's ball blast processing.
Preferably, c4) it is heat-treated and examines with the requirement of following technique: the surface hardness HRC54-62 of the toothed disc N seeps
Carbon-coating depth (or carburized (case) depth) 0.3-0.5mm, core hardness HRC30-45；The geared sleeve M surface hardness HRC60-
64, carburized (case) depth (or carburized (case) depth) 1.3-1.5mm, core hardness HRC30-45.
In addition, in above three embodiments, it is preferable that in the machinings such as vehicle or brill into design requirement size procedure；
It is preferred that using numerical control machining center or numerically-controlled machine tool, clamping times can be reduced, improve working efficiency.
Wherein, the c5) purpose of ball blast is for removing the c3) surface scale that generates in heat treatment process；
Any surface finish is required after polishing, impulse- free robustness damages, collapses the bad defect such as scarce；It is also used for the roughness on the surface improved simultaneously simultaneously
Meet Ra0.8um.
Wherein, c8) cleaning rust-proof.In antirust, it is preferable that using 201# antirust oil (as using the macro outstanding lubricating oil in Hangzhou
Co., Ltd's production or sale).Preferably, before antirust, first product surface is allowed to be dried.
The invention has the characteristics that and be analyzed as follows:
First, the present invention is using nutating gear prior art process has been different from, using first parts processing, to geared sleeve
First carburizing processing, then be heat-treated again after being integrated after assembly welding, can solve its different parts carburized (case) depth require it is different
Technical problem；
Second, the present invention does not need after heat treatment gear hobbing process again, and the technique difficulty of processing of raising can greatly reduce
Rejection rate；
Third, the present invention are using more optimized reasonable distribution heat treatment process, are playing the different location of nutating gear
Core hardness and surface hardness can reach design technical parameter requirement, and meet the working condition requirements such as wear-resisting, impact resistance；
4th, present invention optimizes machining steps, each corresponding size on nutating gear, position degree essence can have been met
Degree requires；
5th, overlap mode clamping (reference can be made to Fig. 5) can be used since the two sides disk of toothed disc is smooth in the present invention
Batch gear hobbing process afterwards, the prior art that compares structure due to shape limit and can only single clamping feature, the present invention can be at double
Improve processing efficiency.
6th, for the present invention since machining is respectively adopted in toothed disc N and geared sleeve M, reserved machining allowance can be more
It is small, therefore amount of waste is few, the cost of material is low；
7th, the rational technology process design in each step of the present invention, every optimization such as parameter, model and rationally control,
Qualification rate after having can guarantee nutating gear processing can guarantee that process stabilizing, rejection rate is lower 99% or more, can
Meet the requirement that product carries out batch, steady production, and processing efficiency is higher, there is significant economic benefit.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (8)
1. the processing technology of a kind of nutating gear, it is characterised in that: individually process toothed disc (N) and gear using first
It covers (M), then again by toothed disc (N) and geared sleeve (M) Combined machining；
Wherein, the toothed disc (N) uses 20CrMo material, and its independent procedure of processing includes:
A1 it) forges, to obtain blank；
A2) smart car first end face (N-1) and the first inner hole (N-2)；
A3) smart car second end face (N-3), the first outer circle (N-4) and heavy platform (N-5)；
A4) brill or punching (N-6)；
A5) gear hobbing (N-7)；
A6) deburring；
A7 it) examines；
Wherein, the geared sleeve (M) uses 20CrMo material, and its independent procedure of processing includes:
B1 it) forges, to obtain blank；
B2) smart car third end face (M-1), the second inner hole (M-2) and the second outer circle (M-3)；
B3) the 4th end face (M-4) of smart car and step outer circle (M-5)；
B4) carburizing is heat-treated；
B5) vehicle welding groove (M-6) and vehicle remove the carburized layer on the 4th end face (M-4)；
B6 it) examines；
Wherein, the toothed disc (N) and geared sleeve (M) assembly processing step include:
C1) toothed disc (N) and geared sleeve (M) press fitting assembly；
C2) toothed disc (N) and geared sleeve (M) are welded as a whole；
C3 it) is heat-treated；
C4) heat treatment is examined；
C5) ball blast；
C6) the second inner hole (M-2) and the second outer circle (M-3) of smart car geared sleeve (M)；
C7 it) examines；
C8) cleaning rust-proof；
C9 it) is put in storage.
2. the processing technology of a kind of nutating gear as described in claim 1, it is characterised in that:
Wherein, step a1) obtained toothed disc (N) blank after forging, it is desirable that the hardness HB165-220 of its blank.
3. the processing technology of a kind of nutating gear as described in claim 1, it is characterised in that: wherein, the b4) carburizing
Heat treatment the following steps are included:
Heating treatment is heated to 820 ± 10 DEG C with 20 ± 5 DEG C/min of heating rate, carbon potential 0.7 ± 0.05%；
Isothermal processes, isothermal heats under the conditions of 920 ± 5 DEG C, and soaking time is 45 ± 5 minutes, carbon potential 0.8 ± 0.05%；
Carburization Treatment, 920 ± 5 DEG C of carburizing temperature, carburizing time 315 ± 10 minutes, carbon potential 1.2 ± 0.05%；
DIFFUSION TREATMENT, 920 ± 10 DEG C of diffusion temperature, diffusion time 185 ± 10 minutes, carbon potential 0.72 ± 0.02%；
Cooling treatment, in furnace plus protective atmosphere is cooling.
4. the processing technology of a kind of nutating gear as described in claim 1, it is characterised in that: wherein, the c2) gear
After disk (N) and geared sleeve (M) are welded as a whole, it is desirable that anti-de- power is greater than 240N.
5. the processing technology of a kind of nutating gear as described in claim 1, it is characterised in that: wherein, the c2) gear
After disk (N) and geared sleeve (M) are welded as a whole, weld seam protrudes first end face (N-1) and requires to be less than 0.5mm.
6. the processing technology of a kind of nutating gear according to any one of claims 1 to 5, it is characterised in that: described
C3) heat treatment the following steps are included:
Heating treatment is heated to 800 ± 10 DEG C with 20 ± 5 DEG C/min of heating rate, carbon potential 0.6 ± 0.05%；
Isothermal processes, isothermal heats under the conditions of 860 ± 5 DEG C, and soaking time is 30 ± 5 minutes, carbon potential 0.85 ± 0.05%；
Carburization Treatment, 860 ± 5 DEG C of carburizing temperature, carburizing time 75 ± 10 minutes, carbon potential 1.05 ± 0.05%；
DIFFUSION TREATMENT, 860 ± 10 DEG C of diffusion temperature, diffusion time 25 ± 10 minutes, carbon potential 0.75 ± 0.02%；
Quenching treatment, 800 ± 5 DEG C of hardening heat, using oil quenching, 100 ± 5 DEG C of oil temperature, the cool time 30 ± 2 minutes, carbon potential 0.9
± 0.02%；
Tempering, 170 ± 10 DEG C of tempering temperature, tempering time 120-150 minutes.
7. the processing technology of a kind of nutating gear as claimed in claim 1 or 2, it is characterised in that: the c5) ball blast tool
There is following technique requirement: using Q236 crawler belt shot-blasting machine, selectingShot, ball blast electric current 15-18A, ball blast time
50-70 minutes, 150 ± 10kg of workpiece total weight of every batch of institute's ball blast processing.
8. the processing technology of a kind of nutating gear as claimed in claim 1 or 2, it is characterised in that: c4) heat treatment inspection
With the requirement of following technique:
The surface hardness HRC54-62, carburized (case) depth 0.3-0.5mm, core hardness HRC30-45 of the toothed disc (N)；
Geared sleeve (M) the surface hardness HRC60-64, carburized (case) depth 1.3-1.5mm, core hardness HRC30-45.
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| CN112589400A (en) * | 2020-10-19 | 2021-04-02 | 江苏华永复合材料有限公司 | High-precision duplex planetary gear machining process |
| CN112917111A (en) * | 2021-03-05 | 2021-06-08 | 山东华成中德传动设备有限公司 | Method for machining split crankshaft gear for diesel engine |
| CN113814664A (en) * | 2021-10-11 | 2021-12-21 | 徐州瑞联齿轮有限公司 | Gear shaving high-frequency process after press mounting of auxiliary shaft |
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