Which bicycle parts are made by cnc machining
Brake parts are the main safety system of bicycles.It is composed of handlebar, handlebar plug, brake pull rod and brake pull rod rotor. The brake parts are subjected to the impact load generated by the bicycle while driving, and it is an important structure for comfortable braking and safe braking.The precision of brake parts manufacturing will directly affect the safety of riding and the service life of bicycles.
2. Hub parts
The Hub is equipped with bearings and fixed axle .Bicycle hub plays the role of connecting the spokes and the axle, which is an essential part of the bicycle. The quality of hub directly affects the cycling speed of bicycle.
The pedal part is assembled on the left and right crank of the central axle part. It is a device that converts the flat power into rotary power. The pedal rotates the crank, Crank/Bottom, Cassette Sprockets to rotate the rear wheel. Therefore, whether the structure and specifications of the pedal parts are appropriate will directly affect whether the rider’s foot position is appropriate and whether the bicycle can be driven smoothly.
The free wheel of a bicycle is screwed and fixed on the right end of the rear axle with internal threads,maintains the same plane as the sprocket,and is connected to the sprocket by the chain, which acts as a driving force on the bicycle.Multi-speed flywheel is based on a Single Speed flywheel, adding flywheel pieces,combined with sprockets on the bottom axle,to form a variety of different transfer ratios,thereby changing the speed of the bicycle
What are the common surface treatments for bicycles:
1.Coating,including electrophoretic coating, electrostatic coating, handmade coating,
Electrostatic powder coating, Fluidized bed powder coating, etc.
2.Electroplating, commonly used in ordinary zinc plating (Taiwan-funded enterprises called UCP, blue zinc and white zinc), color zinc plating, chrome plating(also known as CP, there is polished surface and matt surface)
3.Chemical plating, mainly used in plastic parts, first on the surface of the workpiece chemically plated a layer of copper or nickel, and then followed by electroplating, the last layer is mostly chrome plated.
4.Anode oxidation, electrolytic coloring or dyeing, mainly for non-ferrous aluminum alloys, as well as the emerging magnesium alloy, after treatment surface to form a dense oxide film, can be metallic color, or can be dyed into different colors.Due to its hardness, wear resistance, corrosion resistance and other excellent characteristics, generally no paint or powder coating outside.
5.Polishing, grinding, and wire drawing are also treatment methods for aluminum alloys.Through mechanical (manual or vibration polishing) or chemical (three-acid or two-acid chemical polishing or electrochemical polishing) processing methods, the surface of the aluminum alloy is microscopically changed,to achieve different levels of smooth and brightening effect.Then spray transparent paint, or continue to grind or wire drawing on the surface of the polished workpiece, after treatment to see its changed appearance before coating.
6.Rust-proof phosphating and blackening treatment, not decorative, the purpose is to improve the anti-rust performance of the workpiece, mainly used in the treatment of hubs and bearings.
7.Dacromet treatment,also called tak rust treatment or zinc chromium film, is a flaky zinc-based chromium salt protective coating.It is a high-tech international metal surface treatment and a coating method with good anti-rust performance.Dacromet does not use the electrodeposition method, but directly immerses the workpiece in the Dacromet treatment solution, or uses brushing or electrostatic coating to make the treatment solution adhere to the surface of the workpiece, and then form inorganic conversion film which containing zinc, aluminum and chromium through sintering.
This treatment method is mainly used in the rust prevention of small parts, such as screws, nuts, etc., but also can be applied to chains, supports, handlebars, shelves, parking racks.
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Advantages of Five Axis CNC Machining
In general, it’s difficult to complete the clamping process of a continuous, smooth free-form surface for three axis CNC machining, e.g., the blades of an aero-engine or a steam turbine, the propellers of a naval ship, and moulds with special curved surfaces and complex cavities and orifices. In the use of ordinary three-axis CNC machining, because the posture angle of the cutter relative to a workpiece cannot be changed for the machining of some complex free-form surfaces, interference or undermachining (insufficient machining) may occur. With five-axis machining, the posture angle of the cutter relative to a workpiece can be adjusted any time during machining, so interference can be avoided and the workpiece can be kept clamped in the whole process.
Yijin Hardware can manufacture or supply you with any CNC milling parts you may require. It has high-tech and precision five-axis CNC machining equipment, especially for machining complex curved surfaces.
Our high-precision equipment allows us to provide professional support for both companies and governmental agencies that seek for high quality with high requirements globally.
Yijin Hardware can supply anything you need for CNC milling. It has a significant influence in various industries such as aerospace, aviation, military, scientific research, precision equipment, high-precision medical equipment, and others that require high precision and guaranteed quality.
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