A pneumatic controllable radial impact metal rod pipe material precision cutting machine

Abstract

The invention relates to a pneumatic type controllable radial impact precision blanking machine for metal bar and tube materials. The pneumatic type controllable radial impact precision blanking machine comprises a metal bar and tube material clamping device, a power transmission device and a load application device. The metal bar and tube material clamping device comprises a bar and tube material sleeve used for fixing the metal bar and tube materials. The power transmission device comprises an alternating current servo motor and a revolving connecting plate driven by the alternating current servo motor. The load application device comprises a rotary cylinder which is connected to the revolving connecting plate and is of a symmetrical structure. The alternating current servo motor is used for driving the rotary cylinder of the symmetrical structure, so that loading is carried out in the circumferential direction of the metal bar and tube materials in a certain load sequence, and precision blanking of the metal bar and tube materials is finished under the cyclic action of bending moment loads. By adjusting the rotation angle and rotation speed of the alternating current servo motor and the air inlet and outlet sequence and air inlet amount of the rotary cylinder, an impact hammer in the rotary cylinder can accurately and rapidly apply constant amplitude impact loads to the specific loading position. The whole pneumatic type controllable radial impact precision blanking machine for the metal bar and tube materials has the advantages of being simple in structure, good in stability, high in controllability and the like.

Description

technical field [0001] The invention belongs to the technical field of processing and forming equipment for metal rods and tubes, and relates to a pneumatic controllable radial impact metal rods and tubes precision blanking machine. Background technique [0002] As the beginning of the parts processing process, the metal rod tube is also the starting point of the entire industrial machine production, and its blank is one of the most basic blank forms in the industrial production process. Under normal circumstances, the production of various shaft blanks requires a blanking process as a material preparation process. The blanking of metal rods and tubes refers to the separation of metal rods and tubes produced by metal products factories into subsequent cutting or non-cutting processes. A material preparation process for blanks of different lengths will directly affect the processing quality, cost and efficiency of subsequent parts and even the entire machine on the section qu...

AI Technical Summary

Problems solved by technology

Although high-speed band sawing can obtain a high-quality, high-precision blank section, the sawing time is relatively long, and because the saw blade has a certain width, it needs to consume metal with the same width as the saw blade during high-speed sawing. Materials, material utilization and efficiency are low. At the same time, additional coolant is required for cooling and lubrication during the sawing process, which causes greater pollution. In addition, the saw blades of high-speed band saws are expensive, and better quality usually need to be imported from abroad; Although ordinary shear blanking has no kerf loss and high material utilization and efficiency, the section deformation and geometric accuracy of the billet obtained by low-speed ordinary shearing are poor, and the section is usually prone to tearing or collapse and presents an obvious "horseshoe shape". , cannot directly meet the requirements of subsequent processing, and requires secondary modification or processing, which not only reduces the overall efficiency, but also causes material waste

In addition, in order to improve the shortcomings of the traditional blanking method, such as extensive, high pollution, and high energy consumption, many domestic and foreign scholars have proposed some different precision shear blanking processes in the past, including high-speed precision shear blanking. method, although its blanking accuracy, billet cross-section quality and blanking efficiency are high, but due to the need to provide a high hedging speed in the high-speed shearing process, the blanking force is large, and the dynamic and static shear blades are prone to shock vibration , which greatly reduces the overall life of the blanking mold and brings serious noise pollution. For this reason, a more expensive and more complex imported complete set of special blanking molds is required, which has also become an obstacle to the widespread application of precision shear blanking. bottleneck

In recent years, the low-stress precision blanking method, which has been a research hotspot in the field of blanking, has improved the dependence of the blanking diameter on the external load to a certain extent, and can also obtain relatively good results under the action of a fixed direction controllable impact load. However, during the entire blanking process, the position of the impact load is fixed, and the blanking of metal rods and tubes of different materials and diameters lacks flexible adjustability, which can easily cause batches of blanks The same defect in the section makes it impossible to improve the scheme, so the whole machine can only be redesigned; in addition, the continuous one-way cyclic loading of the external load is also likely to cause the axial torsion of the metal rod and tube in the same direction as the loaded load, which affects the billet precision and quality

Images