Lathe problem Novice question, lathe novice primer

There is a mark on the dial for how many millimeters a grid is equal to, but there is one thing you have to keep in mind that when you move left and right, how many millimeters is marked in a square. The value should be multiplied by 2 when moving back and forth. Because the marked number is the distance the tool moves, it must be multiplied by 2 because the workpiece is rotating.

Turn the workpiece into a tool end face, the middle pallet retract according to the large pallet scale into 10 grids (1 mm per grid), if the requirements are high, use the small pallet feed (mm per grid).

The scale on the dial of the lathe is calculated according to the screw pitch used for transmission or the circumference of the rack and pinion.

Such as:1The pitch of the drag plate screw is 5mm, and the corresponding dial is divided into 100 grids, which is 5 100=. That is, for every 1 square, the amount of knives eaten unilaterally is. Since the workpiece is rotating, the amount of knife per square is the same.

2.The pitch of the small carriage screw is also 5mm, and the corresponding dial is also divided into 100 grids, the same way, 5 100=. That is, for every 1 square, the amount of knives eaten unilaterally is.

3.After the gears of the large carriage are meshed with the rack on the bed, the dial on the large carriage is formed through the ratio of the number of teeth of one or two sets of gear transmissions. It usually indicates what the feed is for each grid.

There is no formula, this is lathe common sense. You should be apprenticed.

The introductory knowledge of lathes should be operated in accordance with the specifications.

Before work, the machine tool should be lubricated according to the regulations, check whether the handles are in place, and drive the slow car to try to judge Wang's operation five, and confirm that everything is normal before it can be operated. The chuck chuck should be firmly guarded, and the wrench should not be left on the chuck or chuck when the machine is turned on. The workpiece and tool clamping should be firm, and the tool holder should not extend too long (except for boring); Turn the small knife holder to stop to prevent the tool from hitting the chuck, workpiece or scratching the hand.

When the workpiece is running, the operator Qingpai cannot stand directly on the workpiece, do not lean on the lathe, and do not step on the oil pan. When cutting at high speeds, chip breakers and flaps should be used. It is forbidden to reverse braking at high speed, and the car should be returned and parked smoothly.

To remove iron filings, apply a brush or a special hook.

Before operation, check whether the handles of each part of the milling machine are normal, add lubricating oil according to the regulations, and test run at low speed 1 2 before operation. Work clothes should be worn before work, female workers should wear work hats, and gloves are strictly prohibited during operation. The clamping workpiece should be stable.

Loading and unloading, tool setting, measuring, speed changing, fastening the mandrel and cleaning the machine must all be carried out after the machine has been stopped. It is forbidden to place measuring tools, workpieces and other sundries on the workbench. <>

Of course, there is a difference, you get what you pay for, and the accuracy and processing capacity are not the same.

The small lathe is a condensed version of the large lathe, and the principle is the same.

Use as much work as you want.

There are ordinary lathes, there are CNC lathes, and CNC lathes are much more expensive.

General shaft - general sleeve - shaft with steps - sleeve with steps - shaft with steps at both ends (concentricity required) - sleeve with steps at both ends (concentricity required) - shaft with steps at both ends of finishing turning (requires coaxiality and a certain accuracy) - finishing turning two ends with steps sleeve (requires coaxiality and a certain accuracy) -- the car generally has no precision triangle thread - the car has a precision triangle thread - the car generally has no precision triangle thread - the car has a precision triangle thread - the car short trapezoidal thread - the worm - the car double-ended short trapezoidal thread or worm - the car multi-head short trapezoidal thread or worm - the car slender shaft - the car slender screw - at this time, the above work must be sharpened by yourself, adjust the machine tool yourself before you can say that you have started.

There are too many things to learn in the future, such as the adjustment and maintenance of machine tools, the design and utilization of various retaining irons, the selection of reasonable tool geometry according to materials, how to improve processing efficiency, the treatment of chip removal direction, judging the quality of machine tools according to their own (eyes, ears, nose), judging steel, compiling processes, etc.

The stock removal of the lathe is the feed (mm revolutions) if it refers to.

The cutting length per minute of the lathe is.

Cutting time = 1500 minutes.

Lathe workers are relatively more personal test of personal ability, but all production techniques are actually mastered in the same way. First, it is necessary to have basic knowledge of theory, and those who understand theory can learn everything quickly, and they can come up with correct and feasible processing methods if they think about the work they have never seen or done. Those who don't understand the theory learn to sharpen the knife for a few years and have not yet understood it, and those who understand the theory can compete with the general old lathe workers after practicing for a week.

Mechanical drawing, metal technology, metal cutting principles and tools, etc. are recommended to read books. Second, we must use our brains more, practice more and do more, dare to think and dare to do, and pay attention to the summary. Machining industry, don't play virtual, good or not, the product has the final say, what are the ideas, do it on the machine, try it to know whether it's good or not.

It is recommended to write a technical diary every day after doing work, and write down the processing methods, tool selection, cutting parameter selection, machining effect, etc. of the parts (including those processed by others) on the day - I call this thing "knife and knife blood". As long as you have a certain theoretical foundation and are good at insisting on summarizing in this way, after ten or eight years, you are not an expert, who is an expert? The third is to have a big vision, don't just see your broken lathe, other processing equipment should also understand, but also be able to play, and it is best to play decently.

A soldier who doesn't want to be a general is not a good soldier, and he only knows that a turner who plays with a lathe is not a good turner.

It may not be easy to do it all, but it is certainly good to do even some of it. Anyway, the most important thing is to be willing to learn, like to use your brain, dare to think and dare to do.