CN110757343B - Forging process of planet carrier - Google Patents

Forging process of planet carrier Download PDF

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Publication number
CN110757343B
CN110757343B CN201910996304.0A CN201910996304A CN110757343B CN 110757343 B CN110757343 B CN 110757343B CN 201910996304 A CN201910996304 A CN 201910996304A CN 110757343 B CN110757343 B CN 110757343B
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Prior art keywords
planet carrier
forging
pressure
shot blasting
blasting machine
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CN201910996304.0A
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CN110757343A (en
Inventor
张敏
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Zhangqiu Changdong Forging Co ltd
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Zhangqiu Changdong Forging Co ltd
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Priority to CN201910996304.0A priority Critical patent/CN110757343B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/08Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/086Descaling; Removing coating films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02Cleaning by the force of jets, e.g. blowing-out cavities

Abstract

The invention discloses a forging process of a planet carrier, which relates to the technical field of planet carrier processing and aims to solve the technical problems that the randomness of shot blasting machine processing is high, and the oxide skin of the planet carrier is easy to be processed incompletely; improve the effect that the planet carrier cinder was handled.

Description

Forging process of planet carrier
Technical Field
The invention relates to the technical field of planet carrier machining, in particular to a forging process of a planet carrier.
Background
The planet carrier is one of the main components of the planetary gear transmission device, and a planet wheel shaft or a bearing is arranged on the planet carrier; when the planet wheel is used as a basic component, the planet wheel is the part which bears the largest external moment in the mechanism.
The existing Chinese patent with publication number CN105855439A provides a processing method of a planet carrier, which comprises the following steps: s1, selecting a cylindrical steel material with the diameter of 194mm and the thickness of 52 mm; s2, putting the blank in the step 1 into an intermediate frequency heating furnace for heating; s3, using an air hammer to pull the workpiece obtained in the step 2; s4, placing the workpiece after hammer pulling into a forming die in a friction press for hot forging; s5, trimming and thermally correcting the hot forged workpiece by using a punch; s6, carrying out heat treatment on the workpiece after heat correction; s7, cleaning oxide skin; and S8, packaging the parts.
The above prior art solutions have the following drawbacks: the existing planet carrier is subjected to a step of cleaning oxide skin in forging, shot blasting is usually performed by using a shot blasting machine, but the shot blasting machine has high randomness in treatment, so that the oxide skin of the planet carrier is easily treated incompletely, the treatment effect is poor, and the treatment effect needs to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a forging process of a planet carrier, which has the advantage of improving the scale treatment effect of the planet carrier.
The above object of the present invention is achieved by the following technical solutions:
a forging process of a planet carrier comprises the following steps:
s01: polishing a foundation, namely performing first shot blasting treatment on a plurality of planet carriers;
s02: peeling at high pressure, namely, enabling a plurality of planet carriers polished by the foundation to pass through a high-pressure cleaning device along a transmission belt for cleaning;
s03: performing secondary polishing, namely drying the planet carrier peeled under high pressure, and performing sand blasting;
s04: removing scraps by air flow, and removing scraps on the surface of the planet carrier subjected to secondary polishing treatment by strong wind;
s05: and packaging, and finally packaging the polished planet carrier.
By adopting the technical scheme, an operator places the planet carrier in the shot blasting machine, most of oxide skin on the surface of the planet carrier falls off after shot blasting treatment for a certain time, and a small amount of oxide skin adhered to the surface of the planet carrier is completely peeled off from the planet carrier under the water flow shooting of a high-pressure water gun; the effect of planet carrier cinder treatment is improved.
At this moment, a small amount of residual oxide skin is remained on the planet carrier, and after the planet carrier is washed by a high-pressure water gun, the oxide skin at the dead angle position on the surface of the planet carrier is removed in a sand blasting machine after natural drying, so that the effect of treating the oxide skin of the planet carrier is further improved, and finally, the oxide skin falling off at the dead angle position is completely blown away from the planet carrier through high-pressure air flow.
The invention is further configured to: and the shot blasting in the step S01 adopts one of a crawler type shot blasting machine, a hook type shot blasting machine and a turntable type shot blasting machine.
By adopting the technical scheme, the crawler-type shot blasting machine is mostly suitable for cleaning die castings, precision forgings and the like, and removing oxide skins on the surfaces of heat-treated castings, castings and forgings; the hook type shot blasting machine is mostly suitable for fragile and irregularly-shaped workpieces; the turntable type shot blasting machine is suitable for cleaning the surfaces of small and medium-sized workpieces; the three types of shot blasting machines are all suitable for shot blasting treatment of the planet carrier.
The invention is further configured to: the shot blasting time setting of the step S01 is preferably 3min-5 min.
By adopting the technical scheme, the shot blasting time is generally set according to two principles, wherein one principle is energy conservation and energy consumption reduction; cleaning the second step; after multiple experiments, the range value is taken to obtain the optimal shot blasting time of 3-5 min; can guarantee that the oxide skin on the planet carrier surface is cleared up, again can the energy saving.
The invention is further configured to: and (5) peeling at high pressure in the step S02, and performing high-pressure water flow impact on the planet carrier on the transmission belt in a 360-degree surrounding manner by using a high-pressure water gun.
Through adopting above-mentioned technical scheme, because the planet carrier breaks away from the planet carrier under the effect of throwing the ball in-process most cinder of throwing the ball, a small amount of cinder that has come off still adheres on the planet carrier, carries out the shooting of no dead angle high pressure rivers to the planet carrier through the high-pressure squirt of surrounding type, dashes the cinder of adhesion on the planet carrier and falls.
The invention is further configured to: the water jetting angle of the high-pressure water gun in the step S02 forms an included angle of 25-30 degrees with the conveyor belt.
Through adopting above-mentioned technical scheme, the impact rivers of high-pressure squirt are great to the impact force of planet carrier, and the right angle is strikeed and is leaded to the planet carrier surface to appear slightly sunken easily, so through experimental debugging many times when the angle is 25-30 contained angles with the transportation area is penetrated to the water of high-pressure squirt, high-pressure squirt technical ability keeps the impact effect to the planet carrier, can reduce the impact force to the planet carrier surface again.
The invention is further configured to: the water injection pressure of the high-pressure water gun in the step S02 is preferably 50Mpa to 70 Mpa.
Through adopting above-mentioned technical scheme, through the pressure of spouting of the water of control high-pressure squirt, reach the impact effect of high-pressure squirt to the planet carrier surface, but the control of pressure makes the impact force of rivers be difficult to cause the condition of small sunken to take place to the planet carrier surface again.
The invention is further configured to: the sand blasting in the step S03 adopts one of an environment-friendly sand blasting machine and a liquid sand blasting machine.
By adopting the technical scheme, the liquid sand blasting machine well controls dust pollution in the sand blasting processing process and improves the working environment; the environment-friendly sand blasting machine adopts a filter element with higher quality, so that the dust removal effect is improved; the air environment in the sand blasting operation of the planet carrier is guaranteed.
The invention is further configured to: the blasting time setting of the step S03 is preferably 5min-8 min.
By adopting the technical scheme, the sand blasting time is compared with multiple experimental data, and when the sand blasting time is within 5-8 min, the sand blasting machine can achieve the expected polishing effect, the utilization rate of energy is improved, and the consumption and waste of energy are reduced.
The invention is further configured to: the power of the airflow for removing the scraps in the step S04 is set to be 2000W-2500W.
By adopting the technical scheme, the blower with the power of 2000W-2500W blows off oxide skins at the dead corners of the planet carrier, so that the blowing effect is ensured, the power is ensured to be lower as much as possible, the energy consumption is reduced, and the effect of saving resources is achieved.
In conclusion, the invention has the following beneficial effects:
1. polishing by adopting a basic shot blasting machine, cleaning the surface of the planet carrier by using high-pressure water, removing oxide skin attached to the surface of the planet carrier, performing secondary sand blasting fine treatment, and finally removing scraps by using high-pressure airflow; the effect of processing the oxide skin of the planet carrier is improved;
2. the method limits various parameters of the shot blasting machine, the sand blasting machine and the high-pressure water gun, and achieves the effect of saving energy sources while ensuring the final effect.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
a forging process of a planet carrier is disclosed, and referring to FIG. 1, the forging process comprises the following steps:
s01: polishing a foundation, namely performing primary shot blasting treatment on a plurality of planet carriers through a shot blasting machine to clean most of oxide skins;
the shot blasting adopts a turntable type shot blasting machine; the setting time of the shot blasting is preferably 4 min; and the energy consumption is reduced under the condition of ensuring the shot blasting effect.
S02: peeling at high pressure, namely, enabling a plurality of planet carriers polished by the foundation to pass through a high-pressure cleaning device along a transmission belt for cleaning;
the transmission belt drives the planet carrier to move towards a fixed direction, at the moment, the planet carrier on the transmission belt is impacted by high-pressure water flows through a plurality of high-pressure water guns in a 360-degree surrounding mode, and oxide skins which are adhered to the surface of the planet carrier and fall off under the shot blasting action of the shot blasting machine are removed by utilizing the impact force when the high-pressure water flows are contacted with the planet carrier;
the water jet angle of the high-pressure water gun and the conveying belt form an included angle of 30 degrees, so that slight depression on the surface of the planet carrier after the high-pressure water gun directly shoots is reduced;
the water jet pressure of the high-pressure water gun is preferably 60Mpa, and the consumed power is reduced under the condition of ensuring the cleaning effect of the high-pressure water gun.
S03: performing secondary polishing, namely drying the planet carrier peeled under high pressure, performing sand blasting, and taking out oxide skin at dead angles on the planet carrier through sand blasting, wherein sand blasting is more delicate than shot blasting for treating the oxide skin, and the effect is better;
the sand blasting adopts an environment-friendly sand blasting machine, and the pollution of dust to air caused by the sand blasting is reduced under the condition of utilizing the sand blasting to clean oxide skin;
the sand blasting time is preferably set to be 6 min; when the effect of clearance cinder under guaranteeing the sandblast, reduce the use of the energy.
S04: removing scraps by air flow, setting the air flow output power of a blower to be 2300W, and strongly blowing the scraps on the surface of the planet carrier subjected to secondary polishing treatment by the air flow of the blower;
s05: and packaging, namely finally packaging the polished planet carrier through a carton, and sealing the opening of the carton by using a transparent adhesive tape for transportation.
The working principle is as follows:
an operator places the planet carrier in a shot blasting machine, most of oxide skin on the surface of the planet carrier falls off after shot blasting treatment for a certain time, and a small amount of oxide skin adhered to the surface of the planet carrier is completely peeled off from the planet carrier under the inclined and surrounding water flow shooting of a high-pressure water gun; the effect of planet carrier cinder treatment is improved.
At this moment, a small amount of residual oxide skin is remained on the planet carrier, and after the planet carrier is washed by a high-pressure water gun, the oxide skin at the dead angle position on the surface of the planet carrier is removed in a sand blasting machine after natural drying, so that the effect of treating the oxide skin of the planet carrier is further improved, and finally, the oxide skin falling off at the dead angle position is completely blown away from the planet carrier through high-pressure air flow.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (7)

1. The forging process of the planet carrier is characterized by comprising the following steps of:
s01: polishing a foundation, namely performing first shot blasting treatment on a plurality of planet carriers;
s02: peeling at high pressure, namely, enabling a plurality of planet carriers polished by the foundation to pass through a high-pressure cleaning device along a transmission belt for cleaning; and a high-pressure water gun is used for carrying out high-pressure water flow impact on the planet carrier on the conveying belt in a 360-degree surrounding manner, and the water jetting angle of the high-pressure water gun and the conveying belt form an included angle of 25-30 degrees.
S03: performing secondary polishing, namely drying the planet carrier peeled under high pressure, and performing sand blasting;
s04: removing scraps by air flow, and removing scraps on the surface of the planet carrier subjected to secondary polishing treatment by strong wind;
s05: and packaging, and finally packaging the polished planet carrier.
2. The forging process of a planet carrier according to claim 1, wherein: and the shot blasting in the step S01 adopts one of a crawler type shot blasting machine, a hook type shot blasting machine and a turntable type shot blasting machine.
3. The forging process of a planet carrier according to claim 2, wherein: the shot blasting time setting of the step S01 is preferably 3min-5 min.
4. The forging process of a planet carrier according to claim 1, wherein: the water injection pressure of the high-pressure water gun in the step S02 is preferably 50Mpa to 70 Mpa.
5. The forging process of a planet carrier according to claim 1, wherein: the sand blasting in the step S03 adopts one of an environment-friendly sand blasting machine and a liquid sand blasting machine.
6. The forging process of a planet carrier according to claim 5, wherein: the blasting time setting of the step S03 is preferably 5min-8 min.
7. The forging process of a planet carrier according to claim 1, wherein: the power of the airflow for removing the scraps in the step S04 is set to be 2000W-2500W.
CN201910996304.0A 2019-10-18 2019-10-18 Forging process of planet carrier Active CN110757343B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035962A (en) * 1973-11-08 1977-07-19 Ayers Joseph W Zircon sand impacting material
GB2095538A (en) * 1981-03-27 1982-10-06 Brinkman Robertus Hermanus Nic Method and apparatus for peeling vegetables such as potatoes
CN102179669A (en) * 2011-03-29 2011-09-14 天津天重车轴制造有限公司 Process for forging planet carrier
CN103302580A (en) * 2013-05-10 2013-09-18 国金黄金集团有限公司 Noble metal product and surface treatment method of noble metal product
CN105386101A (en) * 2015-12-23 2016-03-09 长春理工大学 Steel-base coupling bionic self-cleaning surface and preparation method thereof
CN105648450A (en) * 2014-11-20 2016-06-08 重庆界威模具股份有限公司 Stainless steel casting purification process
CN107671736A (en) * 2017-11-13 2018-02-09 江苏飞腾铸造机械有限公司 One kind improves steel plate impeller blasting technique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035962A (en) * 1973-11-08 1977-07-19 Ayers Joseph W Zircon sand impacting material
GB2095538A (en) * 1981-03-27 1982-10-06 Brinkman Robertus Hermanus Nic Method and apparatus for peeling vegetables such as potatoes
CN102179669A (en) * 2011-03-29 2011-09-14 天津天重车轴制造有限公司 Process for forging planet carrier
CN103302580A (en) * 2013-05-10 2013-09-18 国金黄金集团有限公司 Noble metal product and surface treatment method of noble metal product
CN105648450A (en) * 2014-11-20 2016-06-08 重庆界威模具股份有限公司 Stainless steel casting purification process
CN105386101A (en) * 2015-12-23 2016-03-09 长春理工大学 Steel-base coupling bionic self-cleaning surface and preparation method thereof
CN107671736A (en) * 2017-11-13 2018-02-09 江苏飞腾铸造机械有限公司 One kind improves steel plate impeller blasting technique

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