Charging pipe positioning component and rotary expanding tool and clamping and positioning method of gem element

Abstract

The invention provides a charging pipe positioning component which is used for positioning a charging pipe with an outer cone. The charging pipe positioning component comprises a positioning sleeve and a positioning seat, the positioning seat presses the positioning sleeve onto the charging pipe axially, an inner cone face matched with the charging pipe is arranged at the end of the positioning sleeve, a through hole is formed in the center of the positioning seat, a connector is arranged at the inner end of the positioning seat and extends into the positioning sleeve, and a mounting hole for mounting an ejector core is formed in the outer end of the positioning seat. A rotary expanding charging pipe is positioned on a machine tool by using outer cone faces at two ends of the charging pipe, so that processing standard is required to be uniform with positioning standard in order to guarantee positioning accuracy of the charging pipe; accurate positioning of the charging pipe and a product is guaranteed through the positioning component with the inner cone face. In addition, in order to reduce consumption of the ejector core and bringing convenience to operation, after the charging pipe and the product are positioned and clamped, the positioning component is taken down, and only the product is allowed to participate in rotary expanding processing. The problems that the charging pipe has large positioning error and the ejector core is not reusable are solved.

Description

technical field [0001] The invention belongs to the technical field of tooling fixtures, and in particular relates to a rotary expansion tooling and a clamping and positioning method for a material tube positioning assembly and a jewel element. Background technique [0002] When processing some products with small hole diameter tolerance and high inner hole surface requirements, rotary reaming processing is often used, referred to as "rotary reaming". Before processing, it is necessary to solve the positioning and clamping of the material tube (empty tube containing the product) and the product. Usually used figure 1 The rotary reaming tool shown ensures accurate positioning of material tube 1 (product 5). Before the jewel component product 5 is rotated, the positioning and clamping method of the material tube 1 (product 5) is as follows: a group of product 5 is threaded on a steel wire 4 with a diameter slightly smaller than that of the product 5, and then the steel wire ...

AI Technical Summary

Problems solved by technology

[0003] 1. There is a matching gap between the top core and the material tube, resulting in a large positioning error of the material tube;

[0004] 2. After the rotary expansion process is completed, the hole diameter of the top core and the product will be enlarged together. When processing the next car, a new top core must be replaced. In this way, it is inconvenient to operate during mass processing, and the amount of the top core will be large. increase production cost

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