Machining process of sabot of armor-piercing discarding sabot with large length-to-diameter ratio

Abstract

The invention discloses a machining process of a sabot of an armor-piercing discarding sabot with a large length-to-diameter ratio. The machining process comprises the following steps of (1) manufacturing a blank; (2) carrying out rough turning outer circle and perforating a center hole; (3) dividing trisection petal position lines and drilling and tapping process screw holes; (4) saw-cutting three petals for machining; (5) carrying out rough machining of general milling at 120 degrees; (6) carrying out rough machining of general milling of an inner bore cambered surface; (7) rough turning a contour shape; (8) carrying out ageing treatment; (9) carrying out finish machining of continuous grinding at 120 degrees; (10) carrying out finish machining of general milling of the inner bore cambered surface; (11) carrying out semi-finish turning on the contour shape; (12) carrying out rough milling on an annular groove; (13) carrying out straightening; (14) carrying out finish turning on the annular groove; (15) carrying out finish milling on a sealing groove; (16) carrying out finish turning on the contour shape; (17) carrying out finish machining on an end surface and a fastening annulargroove; (18) carrying out straightening; (19) carrying out detection after burring and finishing unqualified products; and (20) marking and packaging detected qualified products. In this way, the sabot with the large length-to-diameter ratio being in a range of 22-27 mm can be manufactured, so that the sabot is high in quality and wide to apply.

Description

technical field [0001] The invention relates to the technical field of bullet holder manufacturing and processing, in particular to a processing technology for a large length-to-diameter ratio shell-piercing bullet holder. Background technique [0002] The bullet holder is a key part of the armor-piercing bullet. The widely used bullet holder is a saddle-shaped structure divided into three flaps along its longitudinal axis, and is made of super-hard aluminum alloy. The thinner the bullet core, the smaller the resistance. Considering that the caliber of the gun is certain, a lightweight bullet holder is used to sandwich the armor-piercing projectile core in the middle, and the bullet core and the bullet holder are meshed together through the annular groove and the ring teeth. The caliber of the bullet holder is consistent with the caliber of the cannon. The armor-piercing projectile is made into a slender rod shape. After being discharged from the chamber, the bullet holder w...

AI Technical Summary

Problems solved by technology

There are three annular grooves distributed along the axis of the inner cavity of the flaps. The range test and actual combat use show that the machining accuracy of any two grooves directly affects the performance of the product. It is required that the error between any two grooves is not greater than ±0.05mm. The existing The processing technology is prone to vibration during the groove processing process, which cannot guarantee the processing quality of the product

It is not easy to be machined due to the limitation of the spring rest structure and machining accuracy

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