People who have long been engaged in machining know that deep hole machining is a very difficult kind of machining process, while many products always have deep holes in such a structure if you overcome the problem of deep hole machining, the concept of deep hole machining and what is it?

First, the basic definition of deep hole

Generally speaking, the length of the deep hole and the diameter of the hole is greater than 10 times more than the diameter of many holes than the depth of L/ d2100, generally we commonly found in the cylinder, shaft axial oil holes, hollow spindle holes, hydraulic valve holes, etc., the different hole machining requirements are also different, some of the holes not only the size of the extremely tight tolerances, and even the hole of the finish there are certain requirements for the processing of some of the material properties are more difficult to process is to make deep hole machining more difficult. This makes deep-hole machining more difficult, but as long as we make reasonable use of the processing conditions, and understand the concept of deep-hole machining, which can solve it.

Second, the deep hole machining affected by the hole diameter, small diameter, length, resulting in poor rigidity, low strength, easy to produce vibration in the process of machining, ripples, taper, thus affecting the dimensional accuracy of the deep hole and surface finish, in the normal drilling or reaming, the coolant or lubricant can not enter the cutting area, resulting in a reduction in the life of the drill bit, tool heating, chip removal is difficult, so how to remove chips is also the key to solve the problem of deep hole machining.

Therefore, in the process of engaging in deep hole machining, the core issues to consider are three, one is the choice of machining method, the second is the way of chip removal, the third is how to deal with the cooling system, only to solve the above three problems, the problem of deep hole machining basically can be solved, through the deep hole machining concepts shared today, the process of programming will certainly have a lot of help to us.

es to meet the accuracy of the product after finishing, many inexperienced process engineers, it is often easy to be in the finishing process in accordance with the requirements of the customer's drawings labeled dimensional tolerance control, ignoring the impact of surface treatment on the dimensional control, and the surface treatment of the surface treatment. Many inexperienced process engineers often tend to control the dimensional tolerance according to the customer's drawing labeling requirements in the finishing process, ignoring the dimensional impact of the surface treatment, which ultimately leads to the parts tolerance can not be guaranteed, rework or scrap.

Machining tolerances must be combined with the production process and surface treatment to set, if it involves the assembly process, it should also consider the size of the assembly changes, choose what kind of assembly, different assembly for the size of the change is different, these need to be based on the actual changes or experience to determine the surface treatment of the same way, the same way, different surface treatment companies, the pH of the tank fluid is not the same as the actual changes. The same surface treatment method, different surface treatment enterprises, different pH of the bath solution, the actual change is also different.