Reverse machining method and positioner for flat-shoulder sleeve

Abstract

The invention discloses a reverse machining method for a flat-shoulder sleeve. The reverse machining method comprises the following steps: blanking, clamping a positioner with a rectangular block positioning part on a planer vice clamp and arranging a first positioning shoulder on one end of the cylindrical long blank, wherein the first positioning shoulder is used for positioning the cylindrical long blank or the flat-shoulder sleeve, and the first positioning shoulder comprises a first flat shoulder and a second flat shoulder which are respectively formed on one end of the cylindrical long blank, correspondingly; starting a bullnose plane to machine the first flat shoulder on one end of the cylindrical long blank; pulling out a plug pin to rotate the cylindrical long blank by 180 degrees; using the plug pin to lock the radial rotation of the cylindrical long blank; machining the second flat shoulder corresponding to the first flat shoulder on one end of the cylindrical long blank, namely machining the flat shoulder on the symmetrical side of the first flat shoulder; and then, machining the flow positioning shoulder on the rest sections of the cylindrical long blank; and breaking the blank into small-section cylindrical solid barrel, machining and smoothening the solid barrels to be hollow barrels, namely the flat-shoulder sleeves. The reversing machining method uses processes and manners reverse to those in the field so as to achieve a machining process for simultaneously forming a plurality of workpieces, thereby achieving high processing precision and improving the processing efficiency.

Description

technical field [0001] The invention relates to a mechanical processing method, in particular to a processing method of a roller chain flat shoulder (roller) sleeve of a plate conveyor and a positioner thereof. Background technique [0002] Apron conveyor is a conveyor that uses a series of chain plates fixed on the traction chain to transport materials in the horizontal or inclined direction. The piece is placed in the tank box to drive the ring belt to transport the coal scraper out through the spacer. The slat conveyor is composed of driving mechanism, tensioning device, traction chain, slats, driving and redirecting sprocket, frame and other parts. It has been widely used in metallurgy, coal, chemical industry, electric power, machinery manufacturing and other industrial sectors of the national economy. [0003] In the above partial composition of the slat conveyor, the traction chain ( figure 1 ) is the stress center of the machine. Due to the damage of the drag cha...

AI Technical Summary

Problems solved by technology

[0006] For example, if figure 1 As shown in the figure, the shoulder plane of one side of the sleeve is not parallel, and the chain plates on both sides are not parallel after installation, so the second sleeve cannot be assembled in place as required.

Wire cutting can solve the above problems, but the processing cost is relatively high, so it is not suitable for batch processing

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