Want to make a bicycle by yourself, mainly the frame, about the mechanics, materials, welding, etc

I don't know if you're going to make a frame made of iron or aluminum. I feel that it is not so simple to make a bicycle by myself, there is no special supporting equipment and calibration platform in the preparation and production of the special frame, it is not possible, in addition to the welding of various parts of the front triangle and the rear triangle of the frame, if there is an argon arc welding machine, there is no difficulty, and then there is assembly, if you can buy parts and assemble it yourself, it is not a problem, if you want the frame to look good, there is also painting, painting a link. Generally speaking, the frame is not very difficult to make, the main thing is to have the corresponding equipment, especially the calibration platform, if the part of the frame is larger or smaller, the assembly department will go up, for reference only.

It's better not to do it yourself, it's easy to be dangerous if the reception point that bears the load is not good, which is not something that can be explained clearly in a few words.

To save money, it is best to use iron pipes for welding, argon arc welding. Alloy aluminum is relatively light, but it is not easy to weld by itself.

Manufacturers specializing in the production of bicycles, welding frames are all professional fixtures, and they can be welded according to the model in a good position, and it is not easy to weld deformation.

Of course, there are no less necessary tools, and in addition, you can make smaller models on a scale first, summarize the lessons learned in the process, and then do it.

There is no meaning and value, I designed and built many forms of bicycles in the 80s, including folding, lever drive, horizontal, amphibious, etc.

ZGL bikes are pretty good. I also bought one... It's pretty good. Very good value for money!

There are aluminum alloys, there are chrome-molybdenum steels, carbon fibers, aluminum-scandium alloys, titanium alloys, and there are Renault steels.

Steel is a traditional frame material, why is it used less now? First, in order to reduce the weight of the competition, aluminum alloy is lighter than steel, so now more aluminum alloy is used; The second is popular, now it is popular aluminum alloy, after a while it may be carbon or titanium, so the steel material is now reduced, only voodoo's steel frame is now more (domestic), I have used wanga, off-road in the mountains has a shock-absorbing effect; Much stronger than aluminum alloy; Aluminum alloy is not elastic, just very light, but aluminum alloy is best used on soft tails, that is, frames with rear shock absorption; It can control the weight very well; Why is there a lot of aluminum hard frames used in international competitions? Because racing is not about comfort, it's about losing weight to improve performance.

Another point, because aluminum is very cheap, and very easy to process, is the current preferred frame material, as far as my riding experience, the hard frame must choose chromium-molybdenum steel, the soft tail choose aluminum alloy, not bad money titanium alloy, carbon and scandium are not considered, mainly for the competition.

The frame materials I know are mainly steel and aluminum alloy, and the latter feels lighter and more comfortable to ride, but **higher. Other materials such as carbon and TI do not seem to be used in large quantities.

TE and carbon are not the same strength.

Summary. Dear, the bicycle frame is made of automatic welding equipment, through technical improvement, through the improvement of the bicycle frame structure and welding angle, welding method, while reducing the thickness of the pipe, to further improve the welding strength of the entire aluminum alloy frame, at present, the more common is the aluminum alloy or carbon fiber frame, of which the aluminum alloy frame has high strength, low production cost, renewable characteristics of Oh<>

Bicycle frames are what equipment to do.

What is the material of the bicycle frame he uses, what is the size, kiss, the bicycle frame is made of automatic welding equipment, through technical improvement, through the improvement of the bicycle frame structure and welding angle, welding method, while reducing the thickness of the pipe, further improve the welding strength of the entire aluminum alloy frame, at present, the more common is the aluminum alloy or carbon fiber frame, of which the aluminum alloy frame has high strength, low production cost, renewable characteristics of the <>

Then there is no list of bike frame sizes.

Kiss and expand: As the skeleton of the whole bicycle, the frame determines and affects the correctness and comfort of the riding posture to the greatest extent; The frame material has evolved from the earliest chromium-molybdenum steel, to aluminum alloy, and then to the use of composite materials such as carbon fiber, and other scandium alloys, magnesium alloys, titanium alloys, etc., the industry continues to develop new material formulas, improve pipe fittings and structural design capabilities, and innovate processing technology, just to make the frame lighter, stronger, more comfortable, and more streamlined and <>beautiful

Kiss, who uses the frame? <>

We are a spraying company, bicycle frame.

Kiss, this is a different model for each company<>

Kiss, there are a lot of sizes Oh <>

Kiss, the common mountain bike is the frame size is inches; The common sizes <>of road cars are 465mm, 480mm, 500mm, 520mm, 535mm and so on

What are the equipment.

Kiss, make equipment?

There are large bicycle metal crushers, waste motorcycle crushers, automatic welding machines, grinding machines and some spraying equipment, etc<>

Make a frame for a bike.

Dear, there are large bicycle metal crushers, waste motorcycle crushers, automatic welding machines, grinding machines, bicycle tripod vibrating machines, and some spraying equipment <>and so on

The most suitable materials for the main fiber penetration parts of the bicycle are as follows:

1.Frame: Steel or aluminum.

2.Fork: steel or aluminum.

3.Handlebar: steel or aluminum.

4.Steel ring: steel beam vertical state or aluminum.

5.Tires: rubber, EVA foam material for children's cars.

6.Clay slabs: steel or plastic.

7.Hanger hanger: steel. Wait a minute.

My initial estimate of the equipment I used was of course based on my several years of processing experience.

1. Electric welding machine, cutting machine, lathe, milling machine, cylindrical grinding, bearing grinding, there must be a set of heat treatment equipment, spring production equipment, bending equipment, etc., don't look at the bicycle just a few things, there are a lot of things.

It's simple, and it's too detailed.

Which parts of the bicycle are mainly used in the production of your equipment? Maybe I can recommend it for you. I'm from Tianjin.

(1) Steel: strong and durable, but bulky and laborious to ride.

2) Aluminum alloy: good comprehensive performance and cost performance, mainstream.

3) Carbon fiber: light weight, but brittle, **high.

4) Titanium alloy: very light in weight, but **expensive.

。。。The topic of real brain damage has a chicken feather relationship with chemical equipment. . .

Steel: Cheap is ordinary high-carbon steel, rusty, easy to process, average strength, heavy, has a certain elasticity, shock absorption.

High-end steel: the special steel produced by Renault in the United Kingdom or Tange in Japan changes the production process and composition of steel, has good elasticity, strength comparable to aluminum alloy, and has certain anti-rust performance.

There are also domestic chromium-molybdenum steels used in ordinary points.

Aluminum: slightly better with aluminum alloy, no rust, easy to process, lighter than steel, poor elasticity, good rigidity, strength depends on the process, the strength of heat treatment will be much higher, aluminum alloy is also divided, the general frame is 6061 aluminum, good machining performance, generally mechanical forming, high-end pipes will use hydroforming process, the most awesome is SPF process, gas overpressure process.

7005 aluminum is also used, and the rigidity will be better;

There is also 6063 aluminum, which has been strengthened in strength and rigidity, which is better than the general 6061 aluminum.

There are very few niobium alloys, scandium alloys... All of them are special aluminum alloys, all of which are designed to improve their strength and rigidity, and the cost is also high.

Carbon fiber: The entry ** is much more expensive than aluminum alloy, rigidity, strength and weight have reached a very good level, and it also has a certain shock absorption performance (elasticity), and its production process is to glue the carbon cloth layer by layer, which can make a complex structure.

Titanium alloy: good strength, no rust, it can be said to be able to be used for a lifetime, poor rigidity, good elasticity, shock absorption, however, titanium alloy can not be painted, no adhesion to paint.

My preliminary estimate of bai uses the following design.

Du Bei, of course, is the root zhi

According to my several years of processing experience, I got it.

1. Welding machine, back.

Cutting machine, car answer.

Beds, milling machines, cylindrical grinding, bearing grinding, a set of heat treatment equipment, spring production equipment, bending equipment, etc., don't look at the bicycle, there are a lot of things.

It's simple, and it's too detailed.