A mold for spinning
A technology of spinning forming and moulding, applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems of burning out the spinning forming moulds and workpieces, low production efficiency, increase and other problems, to reduce heat, reduce contact, The effect of reducing friction
Active Publication Date: 2015-07-29
OMS MASCH CO LTD
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Problems solved by technology
During the spinning process, friction occurs between the workpiece and the spinning mold, and a large amount of heat is generated, so the temperature of the workpiece and the spinning mold rises. During production, the heat generated due to long-term work cannot be dissipated in time, resulting in spinning The temperature of the press forming mold and workpiece rises sharply, which will inevitably burn out the spinning forming mold and workpiece, which will affect the product quality, resulting in failure of normal production and low production efficiency
Method used
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Embodiment Construction
[0020] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] The invention discloses a mold for spinning, which is mainly used for processing workpieces that need spinning, especially the processing of dryers used in refrigeration equipment, and the processing of workpieces such as dryers. The present invention is a mold for spinning, comprising a die body 1 for clamping on a rotating spindle, the die body 1 is a cylinder, and a cavity 2 is provided at one end of the die body 1, The concave cavity 2 is provided with a number of concave mold forming surfaces 21 for processing the forming end surface 31 of the workpiece 3. The concave mold forming surfaces 21 are spherical, and the center of the bottom of the concave mold forming surface 21 is provided with a nozzle forming hole. 22. The other end of the die body 1 is provided with a connecting hole 4 communicating with the concave cavity 2, the connecting ...
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The invention discloses a die for spinning forming. A cooling groove led to a cavity is formed in the surface of a heat dissipation shaft. Heat dissipation gas blows from the cooling groove to the forming surface of a female die and a work-piece which is machined, and therefore heat generated by friction between the forming surface of the female die and the work-piece can be effectively dissipated fast. A spinning receding edge with a smooth chamfer is arranged on the forming surface of the female die and arranged in the rotation direction of the forming surface of the female die. When spinning is carried out between the forming surface of the female die and the work-piece, the spinning receding edge with the smooth chamfer can reduce friction. A core shaft plane is arranged on a core shaft, contact between the core shaft and the inner surface of a thin pipe opening on the end portion is reduced, and then the heat generated by the friction can be reduced. By adopting the structure, the phenomenon that due to sharp increase of the forming surface of the female die and the work-piece, the die for spinning forming and the work-piece are burnt is effectively prevented.
Description
【Technical field】 [0001] The invention relates to a mold, in particular to a mold for spin forming. 【Background technique】 [0002] In the production of workpieces that need to be spin-formed, especially the dryer used in refrigeration equipment, it is made of tube material, and the two ends are formed after spinning, that is, the two ends of the tube material are spun through the spinning forming mold The corresponding spherical surface makes the nozzle narrow. During the spinning process, friction occurs between the workpiece and the spinning mold, and a large amount of heat is generated, so the temperature of the workpiece and the spinning mold rises. During production, the heat generated due to long-term work cannot be dissipated in time, resulting in spinning The temperature of the press forming mold and workpiece rises sharply, which will inevitably burn out the spinning forming mold and workpiece, thereby affecting product quality, resulting in failure of normal prod...
Claims
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IPC IPC(8): B21D37/10B21D37/16B21D22/14
Inventor 龙晓斌焦大勇
Owner OMS MASCH CO LTD