Automobile gearbox parts, synchronizer gear hub deburring, descaling and polishing process method

How to deburr, descale and polish the synchronizer gear hub,parts of automobile gearbox?

As a key component of automobiles, the transmissions have particularly strict requirements on the material, shape and position tolerance, surface quality and other factors of the mechanical parts assembled into them. The synchronizer hub is an indispensable and important component of the transmission, which is mainly used to reduce the impact between gears when the car shifts gears and achieve smooth speed change of the car.
Synchronizer gear hubs are generally produced by powder metallurgy. During the processing and forming process, due to reasons such as molds, processes or raw materials, visible burrs and rusts often appear on the edges between the teeth or in the middle keyway of the product. The presence of this burr phenomenon will have an adverse effect on the surface quality of the product, and will have a great impact on the mechanical properties, safety, and user experience of the transmission assembly. Today we will share a case study on how to remove burrs and flash from automotive synchronizer gear hub products and achieve high-efficiency finishing and polishing in large quantities. This deburring process method is also suitable for the finishing and polishing needs of other automotive parts such as gears, gear rings, gear sleeves, powder metallurgy or castings.

    • jerrylu
    • 2024-12-10
    • 0 Comments

     

Automobile gearbox parts, synchronizer gear hub deburring, descaling and polishing process method

1. Synchronizer gear hub before deburring, finishing and polishing
How to deburr, finish and polish the synchronizer hub of automobile gearbox parts

Materials：

Powder Metallurgy

Appearance：

There are obvious burrs, flashes, and rough edges.

Shape：

Circular

Size：

20*90 MM

Pre-polishing process：

Sintering

Post-polishing process：

Anti-rust treatment

2. Finishing and polishing requirements
  • Efficient batch deburring, deflashing.
  • Improve surface brightness.
3. Synchronizer gear hub deburring,finishing and polishing process details：
Process steps （1） Heavy cutting to deburr and descale （2） Fine finishing to improve surface brightness （3） Drying and rust prevention
Machinery and Equipment vibratory finisher vibratory finishing machine vibratory dryer
Speed High High High
Abrasives heavy cutting media fine finishing media drying media
Ratio of media to workpiece 4：1 4：1 8：1
Chemical compound finishing compound polishing compound N/A
Water Right amount, the liquid level does not exceed the media Right amount, the liquid level does not exceed the media N/A
Processing time 30 minutes 30 minutes 10 minutes
Remark Automatic screening and rinsing Automatic screening and rinsing Hot drying
4. Synchronizer gear hub after deburring, finishing and polishing
The effect of deburring, finishing and polishing of synchronizer gear hub of automobile gearbox parts
The effect comparision of deburring, finishing and polishing of synchronizer gear hub of automobile gearbox parts

5. Additional Comments
  • The main production process of synchronizer gear hub is powder metallurgy. After sintering, it needs to be trimmed to improve the dimensional accuracy of the sintered product and ensure that the product accuracy meets the requirements of synchronizer gear hub. The burrs are mainly concentrated on the edges of the tooth edges and keyways, and the daily processing quantity is large. Therefore, a vibratory finishing machine is used, and a heavy-cutting finishing media is used to remove the burrs. The sharp angle of the media can penetrate into the grooves between the tooth edges to achieve the purpose of removing burrs and chamfering.
  • Fine finishing and polishing brightness is also achieved by using a vibratory finishing machine, using high-density precision polishing media with slight cutting force, which can improve the surface brightness while micro-cutting and reducing roughness.
  • In order to improve the anti-rust and anti-corrosion performance of the product after water treatment, it is immersed in a rust inhibitor for anti-rust treatment after polishing. Finally, a vibratory dryer is used to absorb the surface water and dry it.

6. Final summary
  • In this case study, we demonstrate the process of surface chamfering, deburring and polishing of a powder metallurgy synchronizer hub component.
    This process is also suitable for surface polishing of powder metallurgy sprockets, bushings, structural parts, 3D printing products and metal powder injection molding products.
  • If you need professional technical support for deburring, descaling, derusting and polishing of aluminum alloy and zinc alloy parts or the following products through casting, die-casting and other molding processes, you can refer to the above cases:
    Gear hub processing technology
    Gear ring deburring equipment
    Gear deburring technology
    Gear deburring machine
    What are the deburring processes after rough machining of gears
    Gear deburring and chamfering technology
    Gear hobbing deburring

What should we do if the burrs cannot be removed completely when the edges are curled, turned over or collapsed?

Deburring, descaling, chamfering and polishing process of CV joint for automobile parts

The CV joint is an important component of the ball cage universal joint, a steering component of the car. On its drum-shaped side wall, six window holes are milled by CNC to install the steel balls responsible for rotation. If there are burrs on the inner wall of the window hole, then over time, the car will make a “clicking” noise during driving or turning. Therefore, the last process in the product production process is deburring and finishing. The commonly used polishing process is to use the vibrating deburring process to put the CV joint into the working bowl of the vibratory finisher for batch deburring. One disadvantage of this process is that the burrs on the edge of the window hole will have a flanging and curling phenomenon, which cannot be removed cleanly; at the same time, collisions between products will cause bumps and wounds. Today we will share how to improve and optimize the process of a 20 chromium manganese titanium CV joint product to solve the problem of unclean burr removal and bumps on the surface of the workpiece. This finishing process method is also suitable for other deburring, deflashing processes such as vibratory, centrifugal barrel, disc finishing where the burrs are not removed cleanly, and the collision between workpieces causes bumps and needs to improve and adjust the finishing and polishing process.

    • jerrylu
    • 2024-06-08
    • 0 Comments

     

deburring,deflashing,chamfering,finishing,polishing process method for CV joint of auto parts

1. The CV joint before vibratory deburring, finishing, polishing
How to deal with the burrs and curling of the automotive parts cv joint

Materials:

20 chromium manganese titanium(20CRMNTI)

Appearance:

burr flanging, curling

Shape:

special-shaped

Size:

Ø65*35 MM

Pre-polishing process:

quenching

Post-polishing process:

packing

2. Finishing and polishing requirements:
  • deburring
  • No burrs, no bruises
3. Optimization and adjustment of cv joint deburring and polishing:
Process steps: （1） deburring
Machine and equipment centrifugal barrel deburring machine
Speed highest
Abrasive Media angle cut triangle ceramic tumbling media
Abrasive media to workpiece 4：1
Chemical compound finishing liquid
Water appropriate amount,the liquid level is 20mm above the abrasive media
Polishing time 10 minutes
Remark parts picked up manually, rinsed with water
4. Deburring effect comparison after optimized process
deburring, finishing and polishing effects of automotive parts cv joint
anti-collision and deburring effect of the cv joint of automobile parts

5. Additional instructions
  • 20 chromium manganese titanium (20CRMNTI) is a high-quality carburizing steel, which is often used to manufacture transmission parts of automotive parts. It has high strength and toughness, but the commonly used vibratory deburring process often has problems such as incomplete burr removal and collision of workpieces. After optimization, the special high-speed centrifugal barrel finishing machine is now used, which has strong finishing force, high cutting efficiency, and uses special anti-collision jigs and fixtures, thus avoiding the problem of collision between parts. Rough finishing uses heavy cutting force angle cut triangle ceramic deburring media, which can achieve the effect of rapid deburring.

6. Final summary
  • In this case study, we demonstrate the automated deburring, finishing and polishing process of the surface of a 20CRMNTI cv joint of automotive parts.
  • If your product workpiece has burrs, curled edges, collapsed edges, etc. that cannot be removed cleanly, or if the workpieces collide with each other and cause bumps and scratches, and other finishing and polishing problems require professional technical support, you can refer to the above case.

How to deburr, descale, deflash, finish and polish precision aluminum alloy die casting gearbox housing

Deburring, deflashing, descaling, finishing and polishing technology for precision aluminum alloy die casting gearbox housing

Aluminum alloy die-castings are widely used in the production and manufacturing of mechanical parts in the electronics, automobile, aircraft, shipbuilding, motor, home appliance and other industries. They have the advantages of beautiful appearance, light weight, high strength and corrosion resistance. However, defects such as burrs, flash, and sharp edge often occur during the production process, so the surface finishing process of the product is particularly important. In this case, we will share a process technology and method for the automated and efficient deburring, deflashing, descaling of aluminum alloy die-casting parts for automobile gearbox housings. This polishing process solution is also suitable for the surface finishing of other die-casting parts made of soft metal materials such as zinc, magnesium, and copper.

    • jerrylu
    • 2024-06-03
    • 0 Comments

     

deburring,deflashing, descaling and polishing effect of aluminum die-casting gearbox housing

1. Aluminum alloy die-casting gearbox housing before polishing
surface burrs, oxide scale of aluminum die-cast gearbox housing

Materials:

aluminum alloy

Appearance:

deges burrs，surface oxide scale.

Shape:

irregular shape

Size:

300*260*150 MM

Pre-polishing process:

high pressure casting

Post-polishing process:

packing

2. Finishing and polishing requirements
  • deburring,deflashing,descaling.
  • smooth,bright surface, no burrs, no oxide scale.
3. Aluminum alloy die-casting gearbox housing polishing process details:
Process steps （1） finish to deburr,deflash,descale （2） cleaning （3） vibratory drying
Machinery and equipment vibratory finishing machine vibratory finishing machine vibratory dryer
Speed highest highest highest
Tumbling media Cone resin media Angle cut cylinder porcelain media corn cob polishing media
Abrasive media to workpiece ratio 4：1 4：1 8：1
Finishing and polishing compound finishing liquid cleaning liquid no
Water appropriate amount, liquid level does not exceed abrasive media appropriate amount, liquid level does not exceed abrasive media no
Polishing time 60 minutes 15 minutes 15 minutes
Remark parts separated and picked up automatically, rinsed with water parts separated and picked up automatically, rinsed with water vibratory drying
4. The effect of deburring, deflashing, descaling and polishing the aluminum alloy die-casting gearbox housing
deburring, deflashing, descaling, polishing, brightening effect of aluminum alloy gearbox housing
finishing, polishing, burnishing effect of aluminum alloy gearbox housing

5. Additional instructions
  • The gearbox housing is produced by high-pressure casting of aluminum alloy. The product has high precision and a smooth surface, but burrs and flashes will appear on the edges and holes of surface, which need to be polished. Therefore, a finishing process combining rough deburring, deflashing, descaling and cleaning is adopted. The rough finishing adopts a vibratory finisher with medium cutting force cone plastic media. The sharp angle of the tumbling media can reach into the grooves, corners and inner walls to remove burrs and flash.
    A vibratory polishing machine is used for cleaning. The abrasive media is made of precision finishing material without cutting force angle cut cylinder porcelain polishing media. This tumbling porcelain media has a high density and has a polishing and brightening effect, which can further reduce the surface roughness.
  • In order to improve the anti-rust performance of the product after water treatment, use a vibrating dryer with corn cob drying media to absorb moisture and dry the inner and outer surfaces.

6. Final summary
  • In this case, we demonstrated the process solution of automated deburring, deflashing, descaling and polishing of a precision die-cast aluminum product, a gearbox housing, used in the automotive parts industry.
  • If you need professional technical support for the polishing of the following aluminum alloy, zinc alloy, magnesium alloy or copper alloy die-cast parts, you can refer to the above cases:
    Deburring, deflashing process technology methods for aluminum alloy die-casting automobile and motorcycle gearbox housings parts polishing process methods
    Automated deburring of aluminum alloy die-castings
    Deburring equipment for die-castings
    How to remove aluminum alloy burrs
    How to deal with aluminum alloy surface burrs
    How to deburr aluminum alloy auto parts
    Deburring methods for die-cast aluminum
    The best way to deburr die-cast aluminum parts
    Die-cast aluminum polishing and brightening technology
    How to deal with die-cast aluminum polishing
    Automated and efficient die-casting polishing and deburring solutions
    Surface treatment methods for aluminum alloy die-castings
    What are the surface treatment processes for aluminum alloy die-castings

error: 网站内容有版权保护!!