Sensor welding thread sleeve for exhaust pipe formed through cold heading and manufacturing method of sensor welding thread sleeve

Abstract

The invention discloses a sensor welding thread sleeve for an exhaust pipe formed through cold heading and a manufacturing method of the sensor welding thread sleeve. The thread sleeve comprises a welding special-shaped face and the like. A welding positioning ring and a sleeve body are integrally formed. A first chamfered face is located at one end of the welding positioning ring, and the welding positioning ring is internally provided with a spiral thread for adjusting. The welding special-shaped face is located at one end of the sleeve body and surrounds the welding positioning ring. A sealing end face and a second chamfered face are both located at the other end of the sleeve body, the second chamfered face is located on the inner side of the sealing end face, and the height of one side of the welding special-shaped face is larger than the height of the other side of the welding special-shaped face. A thread reserved hole penetrates the welding positioning ring and the sleeve body, and a first plane extrusion limiting face and a second plane extrusion limiting face are located on the two side faces of the sleeve body correspondingly. The sensor welding thread sleeve coincides with an automobile exhaust pipe curve, the welding efficiency is improved, the quality cost is reduced, and the component structure design is improved.

Description

technical field [0001] The invention relates to a screw sleeve and a manufacturing method thereof, in particular to a sensor welding screw sleeve for an exhaust pipe formed by cold heading and a manufacturing method thereof. Background technique [0002] In the development and manufacture of global automotive exhaust system modules, the sensor welding nuts used in automotive exhaust pipes are all processed by traditional processing methods, which have defects such as expensive processing equipment, low production efficiency, and poor product quality consistency. In addition, in the structural design of the product, the welding end of the welding screw sleeve is required to be highly consistent with the curve structure of the exhaust pipe, which increases the difficulty and efficiency of processing, and the cost remains high; and due to unstable processing consistency, welding The automatic operation is unstable, resulting in large bad losses. Contents of the invention [...

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Problems solved by technology

[0002] In the development and manufacture of global automobile exhaust system modules, the sensor welding nuts used in automobile exhaust pipes are all processed by traditional processing methods, and the processing equipment is expensive, the production efficiency is low, and the product quality consistency is poor.

In addition, in the structural design of the product, the welding end of the welding screw sleeve is required to be highly consistent with the curve structure of the exhaust pipe, which increases the difficulty and efficiency of processing, and the cost remains high; and due to unstable processing consistency, welding The automatic operation is unstable, resulting in large bad losses

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