Mechanical assembling method of air throttle valve body

Abstract

The invention discloses a mechanical assembling method of an air throttle valve body. The mechanical assembling method comprises the following steps of: mounting bearings, mounting a stepping motor, mounting swing frame assemblies, fastening nuts of a swing frame, mounting an air throttle sheet, regulating interval of an air throttle shaft, carrying full cut-off detection, reversely riveting air throttle sheet bolts, regulating idling, detecting the air-tightness, mounting a sensor, regulating voltage of the sensor, detecting assembly leakage, and detecting loads. The utilized assistive devices can comprise a swing frame assembly mounting assistive device and a swing frame nut fastening assistive device which can be applied to different air throttle valve bodies. The invention has the advantages that: the assembling quality of the air throttle valve body is effectively improved, and 30% of the proportion of valve adhesion and clamping stagnation of the air throttle valve body is reduced; due to the leakage prevention process, the yield of products is increased from 86-91% to 93-96%; and assembly assistive devices are largely reduced and the cost is reduced due to the arrangement of universal assembly assistive device.

Description

Technical field [0001] The invention relates to mechanical assembly technology, in particular to a mechanical throttle body valve body assembly method. Background technique [0002] The traditional assembly process of the throttle valve body is generally to install the bearing, install the stepper motor, install the throttle plate, install the rotating frame assembly, tighten the rotating frame nut, fully closed detection, anti-rivet throttle plate screw, idle speed adjustment, and air tightness detection , Install sensors, adjust voltage, detect assembly leakage, add negative detection and other steps. Since the throttle plate is assembled first, the throttle shaft is positioned by the throttle plate, and then the swing frame assembly is assembled and the swing frame nut is tightened. This makes the throttle plate and the throttle valve in the process of assembling the swing frame assembly and tightening the swing frame nut. The hole is in a state of friction and vibration,...

AI Technical Summary

Problems solved by technology

Since the throttle plate is assembled first, the throttle plate is used to position the throttle shaft, and then the swing frame assembly is assembled and the swing frame nut is fastened, which makes the throttle plate and the throttle valve in the process of assembling the swing frame assembly and fastening the swing frame nut. The hole is in a state of friction and vibration, which causes damage to the middle hole of the throttle valve; in the traditional assembly process, the axial clearance of the throttle shaft is not controlled, so that the throttle body is prone to sticking, sticking, etc. Phenomenon; there is a lack of common auxiliary tools in the entire throttle valve body assembly process, resulting in more valve body models and more auxiliary tools, which increases the cost

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