CN103273112A

CN103273112A - Reverse countersinking device for end face bolt holes of large-size components

Info

Publication number: CN103273112A
Application number: CN2013102363683A
Authority: CN
Inventors: 席颖; 黎宝德
Original assignee: Shenyang Aircraft Industry Group Co Ltd
Current assignee: Shenyang Aircraft Industry Group Co Ltd
Priority date: 2013-06-17
Filing date: 2013-06-17
Publication date: 2013-09-04

Abstract

The invention relates to a reverse countersinking device for end face bolt holes of large-size components. U-shaped pliers capable of being opened and closed are arranged at one end of a machining fixture, an opening and closing control handle is arranged at the other end of the machining fixture, a reverse countersink bit is disposed on one side in the opening of the U-shaped pliers, a guide rod is movably connected to the center of the reverse countersink bit, a limiting bushing is arranged on the outer circumference of the guide rod, and the guide rod extends out of the U-shaped pliers of the machining fixture. The reverse countersinking device is convenient to operate, low in manufacturing cost, capable of being used in a standard mode and widely applicable to countersinking machining of the end face bolt holes of the large-size components in airplane assembling processes.

Description

The big anti-counter boring device of parts end face bolt hole

Technical field

The present invention relates to the anti-counter boring device of a kind of big parts end face bolt hole, be used for the anti-counter boring of parts end face bolt hole, belong to a kind of machined tool.

Background technology

In certain aircraft outer wing assembling process, outer wing is connected with number of bolt hole many with central wing butt joint end face, outer wing wing tip rib end face, side end face at bolt hole needs counter boring, and bolt hole thickness also has strict demand behind the counter boring, need repeatedly withdrawing observation counter boring quality and dismantle cutting tools measurement bolt hole residual thickness repeatedly with common anti-counter boring method and cutter counter boring, process efficiency is extremely low.

Summary of the invention

The technical problem to be solved in the present invention provides the anti-counter boring device of a kind of big parts end face bolt hole, the anti-counter boring device of this big parts end face bolt hole is not only easy and simple to handle, low cost of manufacture, and can standardization use, can be widely used in the counter boring processing of big parts end face bolt hole in the aircraft assembling process.

For overcoming the above problems, concrete technical scheme of the present invention is as follows: the anti-counter boring device of a kind of big parts end face bolt hole, but an end of clamp for machining is the U-shaped pincers of folding, the other end is the folding joystick, a side is provided with anti-counterbit in the opening of U-shaped pincers, the central movable of anti-counterbit connects guide post, and the excircle of guide post is provided with spacing lining, and wherein guide post stretches out outside the U-shaped pincers of clamp for machining.

The anti-counter boring device of this big parts end face bolt hole adopts said structure, can drive anti-counterbit by guide post by aerophor rotates, and utilize U-shaped mouthful of clamp for machining constantly how little, drive the feeding of anti-counterbit, thereby realize the counter boring in hole, utilize spacing lining to limit the feeding size that counter boring bores simultaneously, thereby avoided checking repeatedly the step of the counter boring degree of depth, improved production efficiency greatly.

Description of drawings

Fig. 1 is the structural representation of the anti-counter boring device of big parts end face bolt hole.

The specific embodiment

As shown in Figure 1, the anti-counter boring device of a kind of big parts end face bolt hole, but an end of clamp for machining 1 is the U-shaped pincers of folding, the other end is the folding joystick, a side is provided with anti-counterbit 2 in the opening of U-shaped pincers, the central movable of anti-counterbit 2 connects guide post 4, and the excircle of guide post 4 is provided with spacing lining 3, and wherein guide post 4 stretches out outside the U-shaped pincers of clamp for machining 1.

Its course of work is: press the anti-counterbit 2 of counter boring size Selection, guide post 4 and spacing lining 3 by part thickness requirement selection respective diameters behind the guide hole of part size and the anti-ream, select corresponding clamp for machining 1 by workpiece end face thickness, spacing lining 3 and guide post 4 are installed in the bolt hole to be processed, end face at counter boring is installed counterbit 2, air drill is connected on the guide post 4, clamp the end face of counter boring brill and workpiece with clamp for machining 1, clamp clamp for machining 1 when starting air drill, guarantee the counter boring feeding, push up the other end of clamp for machining 1 up to spacing lining, anti-counterbit can't feeding till, pull down cutter, with gauge block inspection opening counter boring residual thickness.

Claims

1. one kind big anti-counter boring device of parts end face bolt hole, it is characterized in that: clamp for machining (1) but an end be the U-shaped pincers of folding, the other end is the folding joystick, a side is provided with anti-counterbit (2) in the opening of U-shaped pincers, the central movable of anti-counterbit (2) connects guide post (4), the excircle of guide post (4) is provided with spacing lining (3), and wherein guide post (4) stretches out outside the U-shaped pincers of clamp for machining (1).