Powder metallurgy gear front and back automatic recognition device

Abstract

The invention discloses a powder metallurgy gear front-back face automatic identification device which comprises an ascending system, an identification system, a correcting system and a feeding system. The feeding system is composed of a rotary disc and a rail, and has the functions of timing rotation, interval feeding and material-shortage alarming. Gears are fed into the rail through rotation of the rotary disc and slide into a following work station. According to the ascending system, the gears slide into a triggering groove from a guide rail and are contacted with a conductive triggering sheet, an ascending rod is started to jack the gears, and the gears enter a front-back face identification part. The device downward pressing is identified by the identification system, a size plug gauge arranged at the head of the identification device is contacted with a gear hole, downward-pressing or non-downward-pressing enables an interior circuit to be disconnected or connected so as to identify the front faces and the back faces. According to the correcting system, a mechanical arm can be rotated by 180 degrees, reversed gears are turned over, and the consistency of the directions of the gears is ensured. According to the powder metallurgy gear front-back face automatic identification device, manual visual identification is completely replaced, the smear metal phenomenon caused by reversed pressing is eliminated, the hidden quality danger is eliminated, and the foundation is provided for achieving full-automatic assembling of a gear assembly.

Description

technical field

[0001] The invention relates to a device for automatically identifying the front and back of powder metallurgy gears. Background technique

[0002] Powder metallurgy planetary gears have been widely used in auto parts, mainly to realize the function of the reduction mechanism of the starter. Compared with machined and cold-extruded gears, powder metallurgy gears have the characteristics of high precision and low cost.

[0003] In a starter, the planetary gears exist as an assembly (planetary gears and internal bearings). As a stressed part in the transmission, the gear, especially the normal force received by the teeth when meshing, has strength requirements; the oil bearing in the middle can play a lubricating role.

[0004] The key to the assembly of planetary gears and bearings is the guidance of the inner hole of the gear. Due to the relatively low hardness of the oil-impregnated bearing, especially the copper-based bushing is easy to cut, the sharp ed...

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