KR20110067752A - Structure of clutch boss for cost and defect rate reduction and its processing method - Google Patents

Structure of clutch boss for cost and defect rate reduction and its processing method Download PDF

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Publication number
KR20110067752A
KR20110067752A KR1020090124474A KR20090124474A KR20110067752A KR 20110067752 A KR20110067752 A KR 20110067752A KR 1020090124474 A KR1020090124474 A KR 1020090124474A KR 20090124474 A KR20090124474 A KR 20090124474A KR 20110067752 A KR20110067752 A KR 20110067752A
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KR
South Korea
Prior art keywords
boss
sun gear
sleeve
clutch
cost
Prior art date
Application number
KR1020090124474A
Other languages
Korean (ko)
Inventor
전중수
Original Assignee
주식회사 기수정밀
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Publication date
Application filed by 주식회사 기수정밀 filed Critical 주식회사 기수정밀
Priority to KR1020090124474A priority Critical patent/KR20110067752A/en
Publication of KR20110067752A publication Critical patent/KR20110067752A/en

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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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/60—Clutching elements
    • F16D13/64—Clutch-plates; Clutch-lamellae
    • F16D13/644—Hub construction
    • 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
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/2809—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels
    • F16H1/2845—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels by allowing limited movement of the sun gear
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/12—Mounting or assembling

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • General Details Of Gearings (AREA)

Abstract

The present invention relates to a clutch boss structure and a processing method thereof for reducing the cost and reducing the defective rate, and more specifically, the boss part and the sleeve part by carburizing heat treatment of only the sleeve part by separately configuring the boss part and the sleeve part. The present invention relates to a clutch boss structure and a processing method for reducing the cost and reducing the defective rate, which can be configured together to solve the increase in cost and failure rate caused by carburizing heat integrally.

    According to the present invention, in a conventional clutch boss structure in which a sleeve is installed at one end of a boss and a tip of a sun gear inserted into the sleeve is welded to the inside of the boss, the boss is configured so that only the sleeve is carburized. And the sleeve portion are separated into a separate structure, the sleeve portion is assembled to the tip of the sun gear by a press-fit method is installed on one end of the boss via the sun gear welded to the inside of the boss portion, the boss portion oil in the boss portion It is composed of a semi-circular side groove formed to match the oil ball of the sun gear and the sun gear, and a clutch boss structure for cost reduction and defect rate reduction. A method of processing a clutch boss which welds to a boss portion to complete a machining of the clutch boss, wherein the boss portion and the slab Separating form the bracket as a separate structure, respectively, and; Forming the sun gear; Hard turning after the carburizing heat treatment of the sleeve only; Assembling the sleeve to the tip of the sun gear by press-fitting and then laser welding the tip of the sun gear and the inside of the boss to the boss in the press-fitting manner to complete the processing of the clutch boss; Provided is a clutch boss processing method for reducing cost and reducing defective rate, characterized in that configured to include.

Description

Structure of clutch boss for cost and defect rate reduction and its processing method for cost reduction and defect rate reduction

The present invention relates to a clutch boss structure and a processing method thereof for reducing the cost and to reduce the defective rate, and more specifically, the boss portion and the sleeve portion of the clutch boss is separated into a separate structure by carburizing heat treatment only the sleeve portion, the boss portion The present invention relates to a clutch boss structure and a processing method for reducing the cost and reducing the defective rate by constituting the sleeve together with the sleeve to solve the increase in cost and failure rate caused by carburizing heat integrally.

In general, a clutch device is provided between the engine of the vehicle and the transmission to control the power transmitted from the crank shaft of the engine to the input shaft of the transmission. That is, the clutch device is installed between the engine and the transmission in order to smooth the shift of the gear.

Therefore, in order to shift the gear of the car from the lower stage to the higher stage or the higher stage to the lower stage, when the clutch device is manually operated or the clutch device is automatically operated, the power of the crank shaft which is transmitted to the input shaft of the transmission is cut off momentarily. After completing, the gear shifting is smooth.

The clutch boss constituting the clutch device supports the clutch, and has a structure in which a sleeve is integrally formed at one end of the boss and a sun gear is welded to the boss through the sleeve. This parasitic part should be such that its surface is hard and its interior is strong and not broken.

Therefore, the sleeve portion is subjected to a carburizing heat treatment process that can exhibit the above mechanical properties.

However, since the structure of the conventional clutch boss A is a structure in which the boss portion B and the sleeve portion C are integrally formed as shown in FIG. 1, the carburizing heat treatment is performed by the boss portion B and the sleeve portion C. I had to do it all, including).

Therefore, the carburizing heat treatment causes deformation not only to the sleeve portion C but also to the boss portion B, so that the failure rate of the clutch boss A is increased and even the boss portion B, which does not require carburizing heat treatment, is integrally carburized. There was a problem that also increases the machining cost.

In addition, since the bearing is rounded and the sun gear D is inserted into the sleeve part C, the surface roughness of the proper level must be kept constant, but the clutch boss A integrally formed with the boss part B is complicated. Hard turning (using a CBN tool) and polishing to maintain the surface roughness by the shape has a problem that is not easy.

In addition, a hard turning operation of the boss portion B is also required for assembling the sun gear D, and the boss portion B is used to match the oil hole in the connection portion between the sun gear D and the boss portion B. Recognition holes drilled in a semicircle inside of the) also need to be processed, so there was a problem that the time and cost required for processing are further increased.

The present invention has been invented to solve the above problems, the hard turning to reduce the failure rate for the whole due to carburizing heat treatment during processing of the clutch boss and to reduce the cost of carburizing heat treatment and to maintain the surface roughness of the sleeve portion And a sleeve portion is installed at one end of the boss portion and the tip of the sun gear inserted into the sleeve portion is welded to the inside of the boss portion so that the polishing operation is easy and the hard turning operation for fastening the sun gear and the boss portion is unnecessary. In the conventional clutch boss structure, the boss portion and the sleeve portion are separated into a separate structure so that only the sleeve portion can be carburized by heat treatment, and the sleeve portion is assembled by press-fitting to the tip of the sun gear and welded to the inside of the boss portion. It is installed at one end of the boss part via a sun gear, and the boss part is located inside the boss part. It is composed of a semi-circular side groove formed to match the oil hole of the sun hole and the sun gear, and the clutch boss structure for cost reduction and defect rate reduction, forming the boss part, the sleeve part and the sun gear, and the sun gear CLAIMS 1. A method of processing a clutch boss for welding a boss to weld a boss, the method comprising: separating and forming the boss and the sleeve respectively in separate structures; Forming the sun gear; Hard turning after the carburizing heat treatment of the sleeve only; Assembling the sleeve to the tip of the sun gear by press-fitting, and then laser welding the tip of the sun gear and the inside of the boss to the boss in the press-fitting manner to complete the processing of the clutch boss; It is an object of the present invention to provide a clutch boss processing method for reducing the cost and the failure rate characterized in that the configuration.

The present invention significantly reduces the overall failure rate of the clutch boss caused by carburizing heat treatment, greatly reduces the cost required for carburizing heat treatment, completely eliminates the cost and time required because no hard turning work for the boss portion at all In addition, there is an effect that the hard turning and polishing operation of the sleeve portion can be made very easy.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded cross-sectional view of a conventional clutch boss and a sun gear, FIG. 2 is an exploded cross-sectional view of a clutch boss and a sun gear of the present invention, and FIG. 3 is an assembled cross-sectional view of the clutch boss and a sun gear of the present invention.

Clutch boss structure for reducing the cost and defective rate of the present invention is the sleeve portion 2 is installed on one end of the boss portion 1, the inner side of the boss portion 1 and the sun gear through the sleeve portion 2 side In the conventional clutch boss structure in which the tip of (3) is welded, the boss part 1 and the sleeve part 2 are separated from each other so that only the sleeve part 2 can be carburized.

The sleeve 2 is assembled to the front end of the sun gear 3 by a press-fit method and is configured to be installed at one end of the boss 1 via the sun gear 3.

Inside the boss portion 1, a semicircular side groove 5 for drilling the oil hole 4 of the boss portion 1 and the oil hole 4 'of the sun gear 3 is drilled.

In the drawings, reference numeral 4 denotes an oil hole of the sleeve 2, and 6 denotes a weld.

The clutch boss structure for reducing the cost and reducing the defective rate configured as described above lowers the defective rate caused by carburizing heat treatment during the processing of the clutch boss 100, reduces the cost of carburizing heat treatment, and maintains the surface roughness of the sleeve part 2. It is characterized by easy hard turning and polishing work for the hard part and no hard turning work on the boss.

As shown in FIG. 2, the boss part 1 and the sleeve part 2 are separated from each other so that only the sleeve part 2 can be carburized by heat treatment, and the sleeve part 2 is formed of the sun gear 3. It is achieved by a structure that is assembled to the tip by a press-fit method and installed at one end of the boss portion (1).

Hereinafter, the clutch boss processing method for reducing the cost and reducing the defective rate of the present invention having the above structure will be described in detail.

First, the boss portion 1 manufactured by the forging process is subjected to a turning process, a QT heat treatment process, a first and a second finishing process, an oil hole 4 drilling process, and a polishing process in order to process the boss portion 1. Is done.

In addition, the sleeve 2 manufactured by the forging process is subjected to a turning process, an oil hole 4 " drilling process, a side groove 5 forming process, a carburizing heat treatment process, a hard turning process and a polishing process having an appropriate level of surface roughness. Processing of the sleeve 2 is completed by passing through.

Then, the sleeve 2 processed as described above is assembled to the distal end of the sun gear 3 by press-fitting, and the sun gear 3 is pressed into the boss unit 1 of the sun gear 3. Processing of the clutch boss 100 is completed by laser welding the front end and the end of the boss part 1.

As described above, when the carburizing heat treatment is performed except for the boss portion 1 and only the sleeve 2 is carburized, the failure rate of the clutch boss 100 may be greatly reduced.

That is, even if deformation occurs in the sleeve portion 2 due to carburizing heat treatment, only the sleeve portion 2 except for the boss portion 1 needs to be treated poorly, thereby greatly reducing the defective rate of the entire clutch boss 100. .

And the area of the carburizing heat treatment can also be reduced by the area corresponding to the boss portion (1) can greatly reduce the cost and time required for carburizing heat treatment during the processing of the clutch boss 100 to less than half.

In addition, even when performing hard turning and polishing operations to maintain the surface roughness of the sleeve 2, there is no disturbance by the boss 1 can be made very convenient for the surface roughness described above.

And since the hard turning work for the boss portion 1 is not required at all to fasten the clutch boss 100 and the sun gear 3, the cost and time required for this can be completely excluded.

In addition, since the sleeve portion 2 has a simple shape and is separately configured from the boss portion 1, the sleeve portion 2 has an appropriate level of surface roughness at the part contacting the bearing and the sun gear 3 inserted in the press-fitting manner. Hard turning and polishing can be made very easy.

In addition, in the conventional clutch boss 100, the recognition hole formed in the inside of the boss portion 1 to match the oil hole 4 of the boss portion 1 and the oil hole 4 'of the sun gear 3 is formed. Instead, by forming the semicircular side grooves 5 at one end of the sleeve 2, the oil holes 4 and 4 'can be easily fitted when the boss 1 and the sun gear 3 are assembled. Compared to the recognition hole of the tool, the processing is easy and the cost can be reduced.

As described above, the clutch boss structure and the processing method thereof for reducing the cost and reducing the defective rate of the present invention can greatly increase the production efficiency of the clutch boss 100 by completely eliminating the problems caused by the conventional clutch boss structure and processing method. There is an effect.

1 is a cross-sectional view of a conventional clutch boss and sun gear

2 is an exploded cross-sectional view of the clutch boss and the sun gear of the present invention.

3 is an assembled cross-sectional view of the clutch boss and the sun gear of the present invention.

[Description of Drawings]

1: boss portion 2: sleeve portion

3: sun gear 4, 4 ', 4 ": oil ball

5: side groove 6: welding part

100: clutch boss

Claims (2)

In a conventional clutch boss structure in which a sleeve portion 2 is provided at one end of the boss portion 1 and the tip of the sun gear 3 inserted into the sleeve portion 2 is welded to the inside of the boss portion 1. The boss part 1 and the sleeve part 2 are separated into a separate structure so that only the sleeve part 2 is carburized and heat treated, and the sleeve part 2 is press-fitted to the tip of the sun gear 3. It is assembled in a manner and installed on one end of the boss portion 1 via the sun gear 3 welded to the inside of the boss portion 1, the oil hole of the boss portion 1 on the inside of the boss portion (1) Clutch boss structure for cost reduction and defect rate reduction, characterized in that the structure consisting of a semi-circular side groove (5) to align the oil ball (4 ') of the sun gear (3) and (4). In the clutch boss processing method of forming the boss part 1, the sleeve part 2, and the sun gear 3, and welding the sun gear 3 to the boss part 1 to complete the processing of the clutch boss 100. The method comprising the steps of: separating the boss portion (1) and the sleeve portion (2) into separate structures; Forming the sun gear (3); A hard turning process after carburizing only the sleeve portion 2; The sleeve 2 is assembled to the tip of the sun gear 3 by press-fitting method, and the tip and the boss of the sun gear 3 are assembled with the sun gear 3 assembled to the boss 1 by press-fitting. Laser welding the inside of (1) to complete the processing of the clutch boss 100; Clutch boss processing method for reducing costs and defective rate, characterized in that configured to include.
KR1020090124474A 2009-12-15 2009-12-15 Structure of clutch boss for cost and defect rate reduction and its processing method KR20110067752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090124474A KR20110067752A (en) 2009-12-15 2009-12-15 Structure of clutch boss for cost and defect rate reduction and its processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090124474A KR20110067752A (en) 2009-12-15 2009-12-15 Structure of clutch boss for cost and defect rate reduction and its processing method

Publications (1)

Publication Number Publication Date
KR20110067752A true KR20110067752A (en) 2011-06-22

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KR1020090124474A KR20110067752A (en) 2009-12-15 2009-12-15 Structure of clutch boss for cost and defect rate reduction and its processing method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107120360A (en) * 2016-02-25 2017-09-01 舍弗勒技术股份两合公司 Clutch apparatus and the method for manufacturing clutch apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107120360A (en) * 2016-02-25 2017-09-01 舍弗勒技术股份两合公司 Clutch apparatus and the method for manufacturing clutch apparatus
CN107120360B (en) * 2016-02-25 2020-12-08 舍弗勒技术股份两合公司 Clutch device and method for producing a clutch device

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