Ram type boring and milling head with independent built-in accessory indexing mechanism

Abstract

The invention mainly relates to a ram type boring and milling head with an independent built-in accessory indexing mechanism for a numerical control plane-boring and milling machine, which mainly solves the problems of poor C-axis indexing accuracy consistency and rigidity of the ram type boring and milling head. The ram type boring and milling head comprises a ram, wherein an upper fluted disc is fixed on the lower end face of the ram; a sleeve is arranged in the ram; a thrust sleeve which is fixedly arranged on the ram is arranged between an upper outer shaft shoulder of the sleeve and an inner shaft shoulder of the ram; a plurality of groups of blind holes are arranged on the lower end face of the thrust sleeve; springs and push rods are respectively arranged in the blind holes; the lower part of each push rod is in contact with a shaft shoulder of the sleeve; a gear wheel is fixed on the upper end face of the sleeve and is meshed with a pinion; an axial annular groove is arranged on a hub of the gear wheel; a piston is arranged in the annular groove; the lower end face of the piston is in contact with the thrust sleeve; the pinion is fixed on a gearbox which is connected with a servo motor; the pinion, the gearbox and the servo motor are respectively arranged inside the ram; and a lower fluted disk which can be meshed with the upper fluted disk is fixed on a lower outer shaft shoulder of the sleeve. The indexing of the ram type boring and milling head is driven by adopting a separate motor, thereby the indexing accuracy and the integral rigidity of the milling head areimproved and the improvement on the manufacturability of the whole manufacture process and the reduction on the manufacturing cost are facilitated.

Description

technical field [0001] The invention mainly relates to a tool used in a numerical control boring and milling machine, specifically a ram type boring and milling head with an independent built-in accessory indexing mechanism. Background technique [0002] The ram type boring and milling head is the core part of the gantry boring and milling machine. This part realizes the main transmission of the machine tool. The front end of the ram boring and milling head can be equipped with a variety of accessory heads with different functions. When the accessory head is an angle milling head, The advantages and disadvantages of its structure are directly related to the dynamic and static rigidity, precision and processing efficiency of the machine tool. Different structural forms lead to different structural forms of the right-angle attachment head, and also affect the technological range of the machine tool. The traditional indexing methods of right-angle attachment heads mostly use ...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the shortcomings of the existing ram-type boring and milling heads, such as the shortcomings of poor consistency and poor rigidity of the C-axis indexing accuracy, and provides a ram-type boring and milling head with an independent built-in accessory indexing mechanism

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