CN115365773B - Transfer case driving sprocket and processing method thereof - Google Patents
Transfer case driving sprocket and processing method thereof Download PDFInfo
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- CN115365773B CN115365773B CN202210942355.7A CN202210942355A CN115365773B CN 115365773 B CN115365773 B CN 115365773B CN 202210942355 A CN202210942355 A CN 202210942355A CN 115365773 B CN115365773 B CN 115365773B
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- 238000012546 transfer Methods 0.000 title claims abstract description 20
- 238000003672 processing method Methods 0.000 title abstract description 10
- 238000003801 milling Methods 0.000 claims abstract description 136
- 238000010862 gear shaping Methods 0.000 claims abstract description 55
- 239000002131 composite material Substances 0.000 claims abstract description 44
- 238000003754 machining Methods 0.000 claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000005255 carburizing Methods 0.000 claims abstract description 16
- 238000010791 quenching Methods 0.000 claims abstract description 16
- 230000000171 quenching effect Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 29
- 238000003780 insertion Methods 0.000 claims description 16
- 230000037431 insertion Effects 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention particularly relates to a transfer case driving sprocket and a processing method thereof. The processing method comprises the steps of pre-heat turning and milling composite processing, carburizing and quenching heat treatment and post-heat turning and milling composite processing. Clamping a blank of a driving sprocket on a three-jaw chuck of a turning and milling composite machining center, clamping an outer circle by using hard jaws, and positioning the left end face; turning the right end face, the outer circle and the inner hole, milling external spline gear shaping, and milling a herringbone angle at the end part of the spline; loosening chuck jaws, taking down a workpiece, replacing an inner hole expansion sleeve clamp, turning around the workpiece, installing the workpiece on the clamp, positioning the right end face, and expanding the inner hole; turning the left end face, the outer circle and the inner hole, milling the internal spline gear shaping, and milling the sprocket. And after the hot front turning and milling composite machining is finished, loosening the inner hole clamp expansion sleeve, taking down the workpiece, and performing carburizing and quenching heat treatment on the workpiece. And carrying out hot post-hardening turning and sprocket tooth surface hardening milling on the workpiece subjected to carburizing and quenching heat treatment.
Description
Technical Field
The invention relates to the field of machining of automobile parts, in particular to a transfer case driving sprocket and a machining method thereof.
Background
The four-wheel drive transfer case is an important rotating part widely applied to medium-high-end four-wheel drive vehicles, a driving chain wheel is shown in fig. 3, is one of key transmission parts of the transfer case, has the characteristics of complex structure and high precision requirement, and has the structures of chain teeth, internal splines, external splines, herringbone angles and the like integrated on parts, so that the manufacturing process flow is complex, the processing difficulty is high, and a plurality of special equipment, special tools and tool clamps are required according to the traditional process.
In the prior art, the general manufacturing process of the drive sprocket is: (1) finish turning part one side outline (2) finish turning part other side outline (3) wire cutting sprocket (4) insert internal spline (5) insert external spline (6) inverted herringbone angle (7) carburizing quenching (8) hard turning hole terminal surface.
The process flow relates to four machining devices such as a lathe, a wire-cut electric discharge machine, a gear shaper and a chamfering machine, and relates to repeated clamping for 6 times, the consumed working hours are long, the precision loss is large, the finish machining process after the hot of the tooth surface of the sprocket is avoided, the final precision of the tooth surface is not guaranteed, and the qualification rate is low.
In the automobile research and development process, under the condition that a transfer case driving sprocket is required to be manufactured in a small batch, the production cost of the processing method is too high, and the production efficiency is low.
Disclosure of Invention
In order to solve the problems, the invention provides a processing method of a transfer case driving sprocket suitable for small-batch trial production, which improves the processing efficiency and processing precision of the driving sprocket and reduces the production cost.
The invention provides a processing method of a transfer case driving sprocket, which comprises the steps of pre-heat turning and milling composite processing, carburizing and quenching heat treatment and post-heat turning and milling composite processing;
the hot front turning and milling combined machining comprises the following steps:
clamping a blank of a driving sprocket on a three-jaw chuck of a turning and milling composite machining center, clamping an outer circle by using hard jaws, and positioning the left end face; turning the right end face, the outer circle and the inner hole, milling external spline gear shaping, and milling a herringbone angle of the end part of the spline; loosening chuck jaws, taking down a workpiece, replacing an inner hole expansion sleeve clamp, turning around the workpiece, installing the workpiece on the clamp, positioning the right end face, and expanding the inner hole; turning the left end face, the outer circle and the inner hole, milling internal spline gear shaping, and milling chain teeth;
the carburizing and quenching heat treatment comprises the following steps:
after the hot front turning and milling composite machining is finished, loosening an inner hole clamp expansion sleeve, taking down a workpiece, and performing carburizing and quenching heat treatment on the workpiece;
and the hot post-turning and milling combined machining:
and carrying out hot post-hardening turning and sprocket tooth surface hardening milling on the workpiece subjected to carburizing and quenching heat treatment.
Further, the steps of turning the right end face, the outer circle and the inner hole are as follows: starting a turning function of a turning and milling composite machining center, calling an outer circle rough turning tool to carry out rough turning on the right end face and the outer circle of the workpiece, and reserving finish turning allowance on a single side; calling an excircle finishing tool to finish turning the right side end face and the excircle, wherein the right side end face reserves unilateral hard turning allowance; calling an outer circular groove rough turning tool to carry out rough turning on the outer circular groove, and reserving finish turning allowance on a single side; calling an external circle finishing tool to finish turning the external circle groove; calling an inner hole rough turning tool to carry out rough turning on the inner hole, and reserving finish turning allowance on a single side; calling an inner hole finish turning tool to finish turning the inner hole, ensuring that the size tolerance, the cylindricity and the roughness of the inner hole meet the requirements, and reserving unilateral hard turning allowance for the inner hole; and calling an inner hole slot cutter to process the inner hole slot.
Further, the step of milling the external spline gear shaping is as follows: starting a milling function of the turning and milling composite machining center, calling a gear shaping module, programming a machining program according to external spline parameters, calling an external spline gear shaping cutter, performing gear shaping machining on an external spline, performing gear shaping machining by rough insertion and fine insertion, and setting a margin between two gear shaping machining.
Further, the step of milling the herringbone angle of the spline end part is as follows: and (3) maintaining the milling function of the turning and milling composite machining center, calling a chamfer milling cutter, and milling the herringbone angle at the end part of the spline.
Further, the steps of turning the left end face, the outer circle and the inner hole are as follows: starting a turning function of a turning and milling composite machining center, calling an outer circle rough turning tool to carry out rough turning on the left end face and the outer circle, and reserving finish turning allowance on a single side; calling an excircle finishing tool to finish turning the left end face and the excircle, wherein the left end face reserves unilateral hard turning allowance; calling an outer circular groove rough turning tool to carry out rough turning on the outer circular groove, and reserving finish turning allowance on a single side; calling an external circle finishing tool to finish turning the external circle groove; calling an inner hole rough turning tool to carry out rough turning on the inner hole, and reserving finish turning allowance on a single side; calling an inner hole finish turning tool to finish turning the inner hole, ensuring that the size tolerance, the cylindricity and the roughness of the inner hole meet the requirements, and reserving unilateral hard turning allowance for the inner hole; and calling an inner hole slot cutter to process the inner hole slot.
Further, the step of milling the internal spline gear shaping is as follows: starting a milling function of the turning and milling composite machining center, calling a gear shaping module, programming a machining program according to parameters of the internal spline, calling a gear shaping cutter of the internal spline, performing gear shaping machining on the internal spline, performing gear shaping machining by rough insertion and fine insertion, and setting a margin between two gear shaping machining.
Further, the step of milling the sprocket comprises the following steps: and (3) maintaining the milling function of the turning and milling composite machining center, calling a sprocket forming rough milling cutter, carrying out layered rough milling on each tooth slot of the sprocket, cutting down for 0.5-1.5 mm for a single time, reserving finish milling unilateral allowance, and calling a sprocket forming finish milling cutter to finish-mill the sprocket.
Further, the hot post-hardening machining steps are as follows: starting the turning function of the turning and milling composite machining center, replacing a pitch circle clamp, positioning the left side end face, clamping the pitch circle of the sprocket, calling an inner hole hard turning tool, and hard turning the inner hole and the right side end face.
Further, the step of hard milling the tooth surface of the sprocket is as follows: loosening a pitch circle clamp, taking down a workpiece, replacing an inner hole expansion sleeve clamp, positioning the right end face, expanding the inner hole, starting a milling function of a turning and milling composite machining center, calling a measuring head to align the position of a sprocket, and calling a tooth surface forming hard milling cutter to mill the tooth surface.
The invention provides a transfer case driving sprocket, which is specially manufactured by adopting the method.
The beneficial effects of the invention are as follows: the invention aims to solve the processing problem of a transfer case driving sprocket, and provides a processing method of the transfer case driving sprocket suitable for small-batch trial production, which improves the processing efficiency and the processing precision of the driving sprocket and reduces the production cost.
The driving sprocket is machined by utilizing turning and milling combination, so that all machining sequences can be finished on one piece of equipment, equipment resources are saved, the process flow is shortened, and the production efficiency is improved; reference conversion in the processing process is reduced, and the processing precision is improved; the multi-equipment circulation of the traditional process is reduced, and the input of the fixture is reduced, so that the cost is reduced.
Drawings
FIG. 1 is a block diagram of a drive sprocket blank;
FIG. 2 is a cross-sectional view of a drive sprocket configuration;
FIG. 3 is a schematic view of an active appearance;
fig. 4 is a process flow of the drive sprocket.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to solve the processing problem of a transfer case driving sprocket, and provides a processing method of the transfer case driving sprocket suitable for small-batch trial production, which improves the processing efficiency and the processing precision of the driving sprocket and reduces the production cost.
The driving sprocket is machined by utilizing turning and milling combination, so that all machining sequences can be finished on one piece of equipment, equipment resources are saved, the process flow is shortened, and the production efficiency is improved; reference conversion in the processing process is reduced, and the processing precision is improved; the multi-equipment circulation of the traditional process is reduced, and the input of the fixture is reduced, so that the cost is reduced.
Specific embodiments of the present invention will be further described below with reference to the accompanying drawings.
The processing flow of this embodiment is shown in fig. 4, and includes the following steps:
s1, clamping for the first time: the driving chain wheel blank shown in fig. 1 is clamped on a three-jaw chuck of a turning and milling composite machining center, an excircle (D1) is clamped by using hard jaws, and a left end face (T1) is positioned.
S2, turning a right side end face, an outer circle and an inner hole: starting a turning function of a turning and milling composite machining center, calling an outer circle rough turning tool to carry out rough turning on the outer circle of the right end face of the workpiece, and reserving 0.3-0.8 mm finish turning allowance on a single side; calling an excircle finishing tool to finish turning the excircle of the right end surface of the workpiece, wherein the right end surface reserves single-side hard turning allowance of 0.1-0.3 mm; calling an outer circular groove rough turning tool to carry out rough turning on the outer circular groove, and reserving 0.3-0.8 mm finish turning allowance on a single side; calling an external circle finishing tool to finish turning the external circle groove; calling an inner hole rough turning tool to rough-turn the inner hole, and reserving 0.3-0.8 mm finish turning allowance on a single side; calling an inner hole finishing tool to finish the inner hole, ensuring that the dimensional tolerance of the inner hole is 0-0.03 mm, the cylindricity of the inner hole is 0-0.015 mm, the roughness Ra1.6 of the inner hole, and reserving a hard turning allowance of 0.1-0.3 mm on a single side of the inner hole; and calling an inner hole slot cutter to process the inner hole slot.
S3, external spline gear shaping milling: starting a milling function of the turning and milling composite machining center, calling a gear shaping module, programming a machining program according to external spline parameters, calling an external spline gear shaping cutter, performing gear shaping machining on an external spline, and performing gear shaping by rough insertion and fine insertion, wherein the allowance between the two gear shaping machining is 0.1-0.3 mm.
S4, milling a herringbone angle at the end part of the spline: and (3) maintaining the milling function of the turning and milling composite machining center, calling a chamfer milling cutter, and milling the herringbone angle at the end part of the spline.
S5, clamping for the second time: loosening chuck jaws, taking down a workpiece, replacing an inner hole expansion sleeve clamp, turning around the workpiece, installing the workpiece on the clamp, positioning the right end face, and expanding the inner hole.
S6, turning a left end face, an outer circle and an inner hole: starting a turning function of a turning and milling composite machining center, calling an outer circle rough turning tool to carry out rough turning on the outer circle of the left end face of the workpiece, and reserving 0.3-0.8 mm finish turning allowance on a single side; calling an excircle finishing tool to finish turning the excircle of the left end face of the workpiece, wherein the left end face reserves 0.1-0.3 mm of hard turning allowance; calling an outer circular groove rough turning tool to carry out rough turning on the outer circular groove, and reserving 0.3-0.8 mm finish turning allowance on a single side; calling an external circle finishing tool to finish turning the external circle groove; calling an inner hole rough turning tool to rough-turn the inner hole, and reserving 0.3-0.8 mm finish turning allowance on a single side; calling an inner hole finishing tool to finish the inner hole, ensuring that the dimensional tolerance of the inner hole is 0-0.03 mm, the cylindricity of the inner hole is 0-0.015 mm, the roughness Ra1.6 of the inner hole, and reserving a hard turning allowance of 0.1-0.3 mm on a single side of the inner hole; and calling an inner hole slot cutter to process the inner hole slot.
S7, milling internal spline gear shaping: starting a milling function of the turning and milling composite machining center, calling a gear shaping module, programming a machining program according to parameters of the internal spline, calling a gear shaping cutter of the internal spline, performing gear shaping machining on the internal spline, and performing gear shaping by rough insertion and fine insertion, wherein the allowance between the two gear shaping machining is 0.1-0.3 mm.
S8, milling the sprocket: the milling function of a turning and milling composite machining center is kept, a sprocket forming rough milling cutter is called to conduct layered rough milling on each tooth slot of the sprocket, single-time undercut is conducted for 0.5-1.5 mm, and the single-side allowance of finish milling is kept for 0.1-0.3 mm; and (5) calling a sprocket forming finish milling cutter to finish-mill the sprocket.
S9, carburizing and quenching heat treatment: and after the machining before the heating is finished, loosening the clamp expansion sleeve, taking down the workpiece, and performing carburizing and quenching heat treatment on the workpiece.
S10, hard turning after heat: starting the turning function of the turning and milling composite machining center, replacing a pitch circle clamp, positioning the left side end face, clamping the pitch circle of the sprocket, calling an inner hole hard turning tool, and hard turning the inner hole and the right side end face.
S11, hard milling of tooth surfaces of the chain teeth: loosening a pitch circle clamp, taking down a part, replacing an inner hole expansion sleeve clamp, positioning the right side end face, expanding the inner hole, starting a milling function of a turning and milling composite machining center, calling a measuring head to align the position of a sprocket, calling a tooth surface forming hard milling cutter to mill the tooth surface, and finishing the whole working procedure of the transfer case driving sprocket.
After the transfer case driving sprocket is processed, as shown in fig. 2 and 3, H1 is an inner hole, T2 is a right side end face, and T3 is a left side end face.
Preferred embodiments of the present invention are as follows:
a processing method of a transfer case driving sprocket comprises the following specific steps:
s1, clamping for the first time: the driving chain wheel blank shown in fig. 1 is clamped on a three-jaw chuck of a turning and milling composite machining center, an excircle (D1) is clamped by using hard jaws, and a left end face (T1) is positioned.
S2, turning a right side end face, an outer circle and an inner hole: starting a turning function of a turning and milling composite machining center, calling an outer circle rough turning tool to carry out rough turning on the outer circle of the right end face of the workpiece, and reserving 0.4mm finish turning allowance on a single side; calling an excircle finishing tool to finish turning the excircle of the right end surface of the workpiece, wherein the right end surface is reserved with a single-side 0.2mm hard turning allowance; calling an outer circular groove rough turning tool to carry out rough turning on the outer circular groove, and reserving 0.4mm finish turning allowance on a single side; calling an external circle finishing tool to finish turning the external circle groove; calling an inner hole rough turning tool to carry out rough turning on the inner hole, and reserving 0.4mm finish turning allowance on a single side; calling an inner hole finishing tool to finish the inner hole, ensuring that the size tolerance of the inner hole is 0.03mm, the cylindricity of the inner hole is 0.015mm, the roughness Ra1.6 of the inner hole, and reserving a single-side hard turning allowance of 0.15mm in the inner hole; and calling an inner hole slot cutter to process the inner hole slot.
S3, external spline gear shaping milling: starting a milling function of the turning and milling composite machining center, calling a gear shaping module, programming a machining program according to external spline parameters, calling an external spline gear shaping cutter, performing gear shaping machining on an external spline, performing gear shaping by coarse insertion and fine insertion, wherein the allowance between the two gear shaping machining is 0.15mm, and the spline achieves 6-level precision after gear shaping.
S4, milling a herringbone angle at the end part of the spline: and (3) maintaining the milling function of the turning and milling composite machining center, calling a chamfer milling cutter, and milling the herringbone angle at the end part of the spline.
S5, clamping for the second time: loosening chuck jaws, taking down a workpiece, replacing an inner hole expansion sleeve clamp, turning around the workpiece, installing the workpiece on the clamp, positioning the right end face, and expanding the inner hole.
S6, turning a left end face, an outer circle and an inner hole: starting a turning function of a turning and milling composite machining center, calling an outer circle rough turning tool to carry out rough turning on the outer circle of the left end face of the workpiece, and reserving 0.4mm finish turning allowance on a single side; calling an excircle finishing tool to finish turning the excircle of the left end face of the workpiece, and reserving a single-side 0.15mm hard turning allowance on the left end face; calling an outer circular groove rough turning tool to carry out rough turning on the outer circular groove, and reserving 0.4mm finish turning allowance on a single side; calling an external circle finishing tool to finish turning the external circle groove; calling an inner hole rough turning tool to carry out rough turning on the inner hole, and reserving 0.4mm finish turning allowance on a single side; calling an inner hole finishing tool to finish the inner hole, ensuring that the size tolerance of the inner hole is 0.03mm, the cylindricity of the inner hole is 0.015mm, the roughness Ra1.6 of the inner hole, and reserving a single-side hard turning allowance of 0.15mm in the inner hole; and calling an inner hole slot cutter to process the inner hole slot.
S7, milling internal spline gear shaping: starting a milling function of the turning and milling composite machining center, calling a gear shaping module, programming a machining program according to parameters of the internal spline, calling a gear shaping cutter of the internal spline, performing gear shaping machining on the internal spline, performing gear shaping by coarse insertion and fine insertion, wherein the allowance between the two gear shaping machining is 0.15mm, and enabling the spline to reach 6-level precision after gear shaping.
S8, milling the sprocket: the milling function of a turning and milling composite machining center is kept, a sprocket forming rough milling cutter is called to conduct layered rough milling on each tooth slot of the sprocket, single-time downward cutting is conducted for 1mm, and the single-side allowance of finish milling is kept for 0.15mm; and (5) calling a sprocket forming finish milling cutter to finish-mill the sprocket.
S9, carburizing and quenching heat treatment: and after the machining before the heating is finished, loosening the clamp expansion sleeve, taking down the workpiece, and performing carburizing and quenching heat treatment on the workpiece.
S10, hard turning after heat: starting the turning function of the turning and milling composite machining center, replacing a pitch circle clamp, positioning the left side end face, clamping the pitch circle of the sprocket, calling an inner hole hard turning tool, and hard turning the inner hole and the right side end face.
S11, hard milling of tooth surfaces of the chain teeth: loosening a pitch circle clamp, taking down a workpiece, replacing an inner hole expansion sleeve clamp, positioning the right side end face, expanding the inner hole, starting a milling function of a turning and milling composite machining center, calling a measuring head to align the position of a sprocket, calling a tooth surface forming hard milling cutter to mill the tooth surface, and finishing the whole-process machining of the transfer case driving sprocket.
Claims (7)
1. The machining method of the transfer case driving sprocket is characterized by comprising the steps of pre-heat turning and milling combined machining, carburizing and quenching heat treatment and post-heat turning and milling combined machining;
the hot front turning and milling combined machining comprises the following steps:
clamping a blank of a driving sprocket on a three-jaw chuck of a turning and milling composite machining center, clamping an outer circle by using hard jaws, and positioning the left end face; turning the right end face, the outer circle and the inner hole, milling external spline gear shaping, and milling a herringbone angle of the end part of the spline; loosening chuck jaws, taking down a workpiece, replacing an inner hole expansion sleeve clamp, turning around the workpiece, installing the workpiece on the clamp, positioning the right end face, and expanding the inner hole; turning the left end face, the outer circle and the inner hole, milling internal spline gear shaping, and milling chain teeth;
the carburizing and quenching heat treatment comprises the following steps:
after the hot front turning and milling composite machining is finished, loosening an inner hole clamp expansion sleeve, taking down a workpiece, and performing carburizing and quenching heat treatment on the workpiece;
and the hot post-turning and milling combined machining:
carrying out hot post-hardening turning and sprocket tooth surface hardening milling on the workpiece subjected to carburizing and quenching heat treatment; the tooth surface hard milling step of the sprocket comprises the following steps: loosening a pitch circle clamp, taking down a workpiece, replacing an inner hole expansion sleeve clamp, positioning the right end face, expanding the inner hole, starting a milling function of a turning and milling composite machining center, calling a measuring head to align the position of a sprocket, and calling a tooth surface forming hard milling cutter to mill the tooth surface;
the step of milling the sprocket is as follows: the milling function of a turning and milling composite machining center is maintained, a sprocket forming rough milling cutter is called, layering rough milling is carried out on each tooth slot of the sprocket, single-time lower cutting is carried out for 0.5-1.5 mm, a finish milling unilateral allowance is reserved, and a sprocket forming finish milling cutter is called to finish milling the sprocket;
the hot post-hardening machining steps are as follows: starting the turning function of the turning and milling composite machining center, replacing a pitch circle clamp, positioning the left side end face, clamping the pitch circle of the sprocket, calling an inner hole hard turning tool, and hard turning the inner hole and the right side end face.
2. The method of claim 1, wherein the turning the right side end face, the outer circle and the inner hole comprises the steps of: starting a turning function of a turning and milling composite machining center, calling an outer circle rough turning tool to carry out rough turning on the right end face and the outer circle of the workpiece, and reserving finish turning allowance on a single side; calling an excircle finishing tool to finish turning the right side end face and the excircle, wherein the right side end face reserves unilateral hard turning allowance; calling an outer circular groove rough turning tool to carry out rough turning on the outer circular groove, and reserving finish turning allowance on a single side; calling an external circle finishing tool to finish turning the external circle groove; calling an inner hole rough turning tool to carry out rough turning on the inner hole, and reserving finish turning allowance on a single side; calling an inner hole finish turning tool to finish turning the inner hole, ensuring that the size tolerance, the cylindricity and the roughness of the inner hole meet the requirements, and reserving unilateral hard turning allowance for the inner hole; and calling an inner hole slot cutter to process the inner hole slot.
3. The method of claim 1, wherein the step of milling the external spline gear shaping is: starting a milling function of the turning and milling composite machining center, calling a gear shaping module, programming a machining program according to external spline parameters, calling an external spline gear shaping cutter, performing gear shaping machining on an external spline, performing gear shaping machining by rough insertion and fine insertion, and setting a margin between two gear shaping machining.
4. The method of claim 1, wherein the step of milling the herringbone angle of the spline end is: and (3) maintaining the milling function of the turning and milling composite machining center, calling a chamfer milling cutter, and milling the herringbone angle at the end part of the spline.
5. The method of claim 1, wherein the step of turning the left end face, the outer circle and the inner hole is: starting a turning function of a turning and milling composite machining center, calling an outer circle rough turning tool to carry out rough turning on the left end face and the outer circle, and reserving finish turning allowance on a single side; calling an excircle finishing tool to finish turning the left end face and the excircle, wherein the left end face reserves unilateral hard turning allowance; calling an outer circular groove rough turning tool to carry out rough turning on the outer circular groove, and reserving finish turning allowance on a single side; calling an external circle finishing tool to finish turning the external circle groove; calling an inner hole rough turning tool to carry out rough turning on the inner hole, and reserving finish turning allowance on a single side; calling an inner hole finish turning tool to finish turning the inner hole, ensuring that the size tolerance, the cylindricity and the roughness of the inner hole meet the requirements, and reserving unilateral hard turning allowance for the inner hole; and calling an inner hole slot cutter to process the inner hole slot.
6. The method of claim 1, wherein the step of milling internal spline slotting is: starting a milling function of the turning and milling composite machining center, calling a gear shaping module, programming a machining program according to parameters of the internal spline, calling a gear shaping cutter of the internal spline, performing gear shaping machining on the internal spline, performing gear shaping machining by rough insertion and fine insertion, and setting a margin between two gear shaping machining.
7. A transfer case drive sprocket, wherein the sprocket is manufactured by the method of claim 1.
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| CN202210942355.7A CN115365773B (en) | 2022-08-08 | 2022-08-08 | Transfer case driving sprocket and processing method thereof |
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| CN109139869A (en) * | 2018-10-29 | 2019-01-04 | 金华市凯圣机械有限公司 | A kind of special-shaped thin wall part spragging gear and its manufacturing method |
| CN109175924A (en) * | 2018-10-17 | 2019-01-11 | 汉德车桥(株洲)齿轮有限公司 | A kind of processing technology of three actives roller gear |
| WO2019100480A1 (en) * | 2017-11-22 | 2019-05-31 | 湖南耐特材料科技有限公司 | Integrated flywheel sharing cylinders and preparation method therefor |
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| US6988479B2 (en) * | 2002-04-23 | 2006-01-24 | Cloyes Gear And Products, Inc. | Integrated drive sprocket and gear for balance shaft |
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| WO2019100480A1 (en) * | 2017-11-22 | 2019-05-31 | 湖南耐特材料科技有限公司 | Integrated flywheel sharing cylinders and preparation method therefor |
| CN109175924A (en) * | 2018-10-17 | 2019-01-11 | 汉德车桥(株洲)齿轮有限公司 | A kind of processing technology of three actives roller gear |
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| CN115365773A (en) | 2022-11-22 |
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