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3、 Machining example According to the above improvement ideas, the high-efficiency processing technology of a typical folding wing plate is improved. According to the characteristics of multi angle inclined plane, arc transition and high-precision hole groove of the part, DMG high-precision five axis machining center is selected as the processing equipment, and a special hydraulic adjustable tooling is designed and manufactured. A hydraulic power unit is used to provide the power source for the special hydraulic tooling, and the oil enters the hydraulic cylinder inside the main body of the tooling through the pipe to control the clamping and relaxation…

2、 Process improvement The main purpose of rough machining is to remove materials and leave appropriate allowance for finish machining. Therefore, rough machining generally does not need to consider the dimensional accuracy, surface quality and deformation of the workpiece. As long as the power of the machine tool allows, the production efficiency can be improved in many ways. There are certain differences between finishing and rough machining of parts. In finishing, it is necessary to fully consider the influence of clamping, tool walking and process parameters on the internal stress of parts, as well as the influence of cutting force…

At present, China's aerospace products have gradually entered the period of high-density launch, and the manufacturing demand of various aerospace products is increasing year by year, forcing aerospace manufacturing enterprises to significantly increase their production capacity. At present, the most commonly used Aerospace typical parts are high-strength aluminum alloy materials (such as 2A12), which are free cutting plastic materials with low strength and hardness, low melting point, good thermal conductivity and low tensile strength. Although high-strength aluminum alloy has good machinability, because the structural parts of aerospace products have the characteristics of complex shape and structure, large amount of material…

1. Questions raised In processing the main part of a military product - fixed plate (material 45 steel, overall dimension 1005) × seven thousand × A total of 1071 pieces need to be drilled at 20mm) φ 24mm 30 ° inclined hole, and the surface roughness of the hole wall is required to reach RA6 three μ m。 When drilling, the thickness of the workpiece is greater than the nominal size by 3mm (reserved as finish planing allowance). When the standard fried dough twist drill is used to drill the fixed plate on the z3550 universal radial drilling machine, the…

01 laser welding Laser welding: the surface to be processed is heated by laser radiation, and the surface heat is diffused internally through heat transfer. The workpiece is melted to form a specific molten pool by controlling the laser parameters such as laser pulse width, energy, peak power and repetition frequency. Laser welding can be realized by continuous or pulsed laser beam. The principle of laser welding can be divided into heat conduction welding and laser deep penetration welding. When the power density is less than 10 ~ 10 W / cm, it is heat conduction welding. At this time,…

Machining error refers to the degree of deviation between the actual geometric parameters (geometric dimension, geometric shape and mutual position) and the ideal geometric parameters. After machining, the degree of conformity between the actual geometric parameters and the ideal geometric parameters is the machining accuracy. The smaller the machining error is, the higher the degree of conformity is, and the higher the machining accuracy is. Machining accuracy and machining error are two formulations of a problem. Therefore, the size of machining error reflects the machining accuracy. 1、 Manufacturing error of machine tool The manufacturing errors of machine tools mainly include…

1. Processing characteristics of shoulder nut The shoulder stainless steel nut blank is shown in Figure 1. This kind of part has large processing quantity, small volume and short processing time. The operator needs to clamp repeatedly when processing on the ordinary horizontal lathe, resulting in the increase of auxiliary time, labor intensity and low processing efficiency. In order to reduce the machining efficiency and improve the machining process. Figure 1 2. Process improvement The process of processing the shoulder nut with an ordinary horizontal lathe is as follows: ① material preparation and quenching and tempering. ② Turning end face,…

Automobile structural parts refer to the bearing parts or load-bearing parts in the automobile, which are closely related to automobile safety. In the automobile body, many structural parts are installed on the nodes of the body structure and connected with other structural parts to form a deformation resistant high-strength frame. Due to the complex structure and high precision requirements of these parts, they are usually produced by multi station progressive die. Although the progressive die for automobile structural parts has many advantages, such as high production efficiency, saving material cost, good product accuracy and so on, the combination of the…

Recently, I saw some social friends asking about the processing method of holes. I saw that this information is better. I can share it with you for common progress. Cylindrical hole machining with different precision and different blank: Example: hole Φ 25 (0, +0.033), tolerance H8, fried dough twist to hole. Φ 24.8 ream to Φ 25 (0, + 0.033) holes Φ 35 (0, +0.062), hole tolerance H7, fried dough twist drill. Φ 34.8, ream to Φ 35（0，+0.062） Φ 8 (0, +0.018), hole tolerance is about H7-H8, center drill positioning, fried dough twist to Φ 6. Rough boring to Φ…

Since the first ruby laser was developed by American scientist Meiman in 1960, with the needs of the world's scientific and economic development, the laser technology has developed rapidly, especially in recent decades, which has greatly promoted the wider application of laser processing technology. Compared with ordinary light, laser has four characteristics, namely monochromaticity (single wavelength), coherence, directivity and high light intensity. The laser beam is easy to transmit, and its temporal and spatial characteristics can be controlled respectively. After focusing, a very small spot can be obtained. The laser beam with very high power density can melt and gasify…