Single-slide facing head

Abstract

The invention provides a single-slide facing head. The single-slide facing head comprises a chuck head. A cavity is formed in one side of the chuck head; the protruding portion of a sliding block is placed in the cavity; the perpendicular-direction size of the protruding portion is smaller than the perpendicular-direction size of the cavity; a shaft sleeve is arranged on the other side of the chuck head; a draw rod shaft is in clearance fit with the shaft sleeve and one end of the draw rod shaft is arranged in the shaft sleeve; the central axis of the chuck head, the central axis of the shaft sleeve and the central axis of the draw rod shaft coincide. The single-slide facing head is characterized in that a first inclined wedged hole is formed in the matching end of the draw rod shaft; one end of a sliding column stretches into the first inclined wedged hole; a second inclined wedged hole is formed in the sliding block; the opening of the second inclined wedged hole is formed in the protruding portion of the sliding block; the other end of the sliding column stretches into the second inclined wedged hole and is in clearance fit with the second inclined wedge hole. Compared with the prior art, the single-slide facing head is simple in structure, small in gap, resistant to abrasion, stable to operate and high in machining precision.

Description

technical field [0001] The invention relates to the technical field of industrial component processing, in particular to a tool-expanding and groove-boring head for simultaneously developing holes and boring grooves on parts. Background technique [0002] In the field of mechanical processing, it is often encountered that a certain hollow cylindrical hole in the blank of the cast part needs to be expanded, and the inner surface of the expanded column needs to be bored with a part with an annular groove, such as the pin hole of the internal combustion engine piston. There is a hole in the pin hole. In the groove where the circlip is installed. At present, in the processing of such parts, there have been one-way cutter boring head and two-way cutter boring head. The structure of the existing knife-spreading and boring head is as attached figure 2 Shown: gear 5 ' is arranged in the chuck head 1 ', and gear 5 ' cooperates with the pull bar tooth bar 4 ' that is arranged on the...

AI Technical Summary

Problems solved by technology

[0003] However, since the displacement of the sliding block 6' in the cutter boring head is realized through gears and racks, and the meshing of gears and racks inevitably requires a certain gap, the existence of this gap inevitably leads to The amount of feed of the boring tool produces an error, which affects the accuracy of the finished product

More importantly, for boring shallow grooves, due to the limited feed rate of the boring tool, only a certain number of teeth or even a certain two teeth on the gear 5' are connected to a certain number of teeth on the tie rod rack 4' respectively. Several teeth or even a certain tooth mesh with certain certain teeth or even a certain tooth on the slider 6'. After a long period of use, these teeth or even this tooth will increase the wear and tear, and the gap will become larger and larger. The accuracy of the finished product will become worse and worse

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