What is the meaning of mating in mechanical drawings?

With regard to question 1, there is a situation in drafting where parts are machined together in an assembly. The term “A4 taper pin hole mating” means that when machining the taper pin hole, it is necessary to match the pin hole with the taper pin in order to ensure that the assembly requirements are met.

Question 2: What is the purpose of a mating hole used in machinery? How do I make a mating hole? A mating hole in a machine is provided to connect with another part. The hole is not machined because it is not possible to determine the position of the hole during the machining process, and its position can be determined only when it is assembled together with the part with which it is to be mated, and after the position is determined, the hole is machined just as it was during the machining process.

Question 3: Drawings above the “with the work” in the end what is the meaning of it, with the work refers to the parts are not based on the size of the drawings to do, but in accordance with the actual measurement of the parts with which the formation of a match to do the size of the actual measurement of the parts. For example, the nut has been turned to complete, and the bolts that are paired with each other, according to the size of the nut to be turned, the use of the nut to check the degree of fit of the thread size when turning bolts, without the need to produce according to the drawing tolerances. In what case it will be used, is already completed in one of the mating parts, the other is to do.

Question 4: What is the meaning of the matching holes mentioned in the drawings? There are many ways to make matching holes. Firstly, if the holes are relatively large, then you can rough the holes and reserve a certain amount of machining, and then mount the workpieces together and carry out the finish machining. Secondly, for holes with a small number of holes and the requirements are not too strict, you can machine one piece beforehand, and then the other can be mounted and the previous one used as the standard for the machining. Thirdly, in the case of small holes that need to be reamed, it is necessary to mount the two pieces together and machine them simultaneously.

Matching is usually done for precision positioning or when the workpiece is required to be disassembled and assembled in its original position.

Question 5: In the field of mechanical drawing, what is the meaning of the word "work"? I have found that there are two different ways of saying this that are commonly seen.

Firstly, the first type, the matching work, which means matching processing, if two parts are to be processed together, then they are placed together, or spot welded by electric welding, or threaded, or fixed with pins, etc., and then processed together, for example, by drilling holes.

In the second case, the dimensions of one part are used to machine the dimensions of another part. For example, in the case of a mould, there is the case of fit machining. The cutting edge of the upper (or lower) die is sized to ensure a certain clearance, and the cutting edge of the lower (or upper) die is sized accordingly.

Question 6: Some of the mechanical drilling drawings will call for the matching work, and some will be written with the matching drill, so is the matching work and the matching drill the same meaning? Or is there any difference? Thank you... In the drilling process, there is a method of matching drilling as well as a method of overdrilling. As I understand it, counter drilling is a method of machining two parts together, while counter drilling is a method of drilling using the original part as the standard, and using various feasible positioning means to carry out the drilling process. For example, it is possible to use the set drilling method, and it is also possible to use the triangular positioning method to obtain the centre position of each hole before machining, and so on. The scope of the matching work is wider than that of the matching drilling, and the processing cost may be higher.

Question 7: What is the meaning of the matching in mechanical drawing? Under what circumstances will it be used? Matching means that the parts are not made according to the dimensions indicated in the drawing, but according to the actual measured dimensions of the parts with which they are matched. For example, the nut has been completed turning process, with the matching bolt, according to the size of the nut to turn the system, in the turning of the bolt with the help of the nut to check the thread size of the degree of fit, do not need to be made in accordance with the tolerance specified in the drawings. In what case it is used - one of the mating parts has been done, the other one should be matched.

Question 8 is about what is meant by length matching in mechanical drawings, that is to say, when more than two parts are machined, they are not machined individually, but are combined and assembled before being machined together, or the dimensions of one of the parts are measured first, and the other is made according to the dimensions obtained from the measurements.

Question 9: *** , the word for mating, has a word for what and? Make peace.