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The machine has been working for a lifetime, what does the 4.4 and 8.8 on the bolt mean?

The performance grades of bolts for steel structure connection are divided into more than 10 grades such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel and are heat-treated (quenching, t... Read More

Process measures and operation skills to reduce deformation of aluminum parts

There are many reasons for the deformation of aluminum parts, which are related to the material, shape of the part, and production conditions. There are mainly the following aspects: deformation caused by internal stress of blank, deformation caused by cutting force and cutting heat, and deformat... Read More

One article to understand drilling, reaming, boring, pulling… A must read for machinery industry worker!

Drilling, pulling, reaming, boring… What do they mean? The following will teach you to easily understand the difference between these concepts. Compared with external surface processing, the conditions of hole processing are much worse, and it is more difficult to process holes than to proc... Read More

Detailed explanation of common terms of CNC system, necessary information for machining professionals

Increment pulse coderThe rotary position measuring element is installed on the motor shaft or the ball screw, and when it rotates, it sends out pulses at equal intervals to indicate the displacement. Since there is no memory element, it cannot accurately represent the position of the machine tool... Read More

CNC programming engineer factory technical specification

1. Clarify the responsibilities of the programmer, and be responsible for the control of processing quality, processing efficiency, cost control, and error rate in the mold CNC manufacturing process.2. When the programmer receives a new mold, he must understand the requirements of the mold, the r... Read More

Application and Skills of CNC Machining Cycle Instruction

1 IntroductionFANUC system is one of the commonly used control systems for CNC machine tools, and its control commands are divided into single cycle commands and multiple cycle commands.2 programming ideasThe essence of the program is to find out the characteristics of the tool trajectory, and re... Read More

The measuring tools in the machinery factory are all senior engineers who understand it!

1. Classification of measuring instrumentsA measuring instrument is an instrument that has a fixed form and is used to reproduce or provide one or more known quantities. Different measuring tools can be divided into the following categories according to their use:1. Single value measuring toolA g... Read More

Coarse and fine thread, how to choose?

How fine is the thread that can be called a fine thread? We might as well define it in this way. The so-called coarse thread can be defined as a standard thread, while the fine thread is relative to the coarse thread. Under the same nominal diameter, the number of threads per inch is different, t... Read More

Basic common sense of machining, don’t do it if you don’t understand it!

1. Benchmark Parts comprise several surfaces, each with a specific size and mutual position requirements. The relative position requirements between the surfaces of the parts include two aspects: the distance dimensional accuracy between the surfaces and the relative position accuracy (such as c... Read More

Aluminum product processing technology

Aluminum is the most widely used non-ferrous metal material, and its application range is still expanding. More than 700,000 kinds of aluminum products are produced using aluminum materials. According to statistics, there are more than 700,000 kinds of aluminum products, and various industries, ... Read More

Common problems and solutions of tools in deep hole machining

In deep hole machining, problems such as dimensional accuracy, surface quality, and tool life of the workpiece often occur. How to reduce or even avoid these problems is an urgent problem that needs to be solved. aluminum part1. There are problems: the aperture increases and the error is large1)... Read More

Why does stainless steel also rust? Finally figured it out!

Why does stainless steel also rust? When brown rust spots (spots) appear on the surface of stainless steel pipes, people are amazed: “Stainless steel does not rust, and if it rusts, it is not stainless steel, and there may be a problem with the steel.” This is a one-sided misconcepti... Read More
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