CN-121988772-A - Aircraft finish machining connects chamfer device

CN121988772ACN 121988772 ACN121988772 ACN 121988772ACN-121988772-A

Abstract

The utility model provides an aircraft finish machining connects chamfer device, includes cutter arbor, chamfer countersink, stopper, guide bushing, joint tab and finish machining joint, wherein, the finish machining connects the setting at joint tab front end, the cutter arbor is arranged in and is connected the tab rear end, and cutter arbor one end is provided with the draw-in groove, install the chamfer countersink on the draw-in groove, be equipped with R type cutting edge on the chamfer countersink to be provided with on the cutter arbor that is located the chamfer countersink outside and be used for contacting with the finish machining joint stopper, the cutter arbor other end is equipped with the guide bushing that is used for guiding cutter arbor machine direction. The invention can rapidly and accurately finish the R-angle machining requirement of the joint, thereby avoiding the problems of low efficiency and low accuracy in the traditional R-angle machining process, simultaneously effectively solving the problem of poor molding in the R-angle machining process, and in addition, the cutter bar and the chamfering countersink adopt modularized design, so that the chamfering work of the finish machining joint with various specifications can be satisfied.

Inventors

SONG NING
ZENG TIAN
SHU FEI
LI JINGXUN
XU YANYU
CAO QINGXIA
YANG HUAN
TAO JIANG

Assignees

江西洪都航空工业集团有限责任公司

Dates

Publication Date: 20260508
Application Date: 20260123

Claims (7)

1. The utility model provides an aircraft finish machining connects chamfer device, includes cutter arbor, chamfer countersink, stopper, guide bushing, joint tab and finish machining joint, its characterized in that, the finish machining connects the setting at joint tab front end, the cutter arbor is arranged in and is connected the tab rear end, and cutter arbor one end is provided with the draw-in groove, install the chamfer countersink on the draw-in groove, be equipped with R type cutting edge on the chamfer countersink to be provided with on the cutter arbor that is located the chamfer countersink outside and be used for contacting with the finish machining joint stopper, the cutter arbor other end is equipped with the guide bushing that is used for guiding cutter arbor direction of working.
2. The aircraft finishing joint rounding device of claim 1, wherein one side of the cutter bar is provided with a connecting hole for connecting with an air gun.
3. The aircraft finishing joint rounding device of claim 1, wherein the cutter bar and the rounding countersink are of modular construction.
4. An aircraft finishing joint rounding device according to claim 1, wherein the joint lug front end is provided with a joint hole for carrying a finishing joint.
5. The aircraft finishing joint rounding device of claim 1, wherein the joint tab rear end is provided with a joint hole for carrying a knife bar.
6. The aircraft finishing joint rounding device of claim 1, wherein the limiter is provided with bearings for mounting the limiter on a cutter bar.
7. An aircraft finishing joint chamfering device according to any one of claims 1 to 6, wherein before chamfering a finishing joint, a limiter is sleeved on a cutter bar, a chamfering countersink is installed according to a clamping groove on the cutter bar, the installed chamfering countersink and the cutter bar extend into a joint hole of a joint lug to be subjected to chamfering, a guide bush is installed in a joint hole at the rear end of the joint lug, the end face of the guide bush is attached to the end face of the joint lug, the cutter bar is inserted into the guide bush, finally an air gun is installed on one side of the cutter bar to provide feeding power for the cutter bar, when the chamfering device starts to cut the finishing joint, the limiter feeds along the axial direction of the finishing joint along with the chamfering device, when the end face of the limiter contacts with the end face of the finishing joint, the cutter bar reaches a preset machining position, the chamfering countersink starts to finish the finishing joint, the cutter bar can be effectively prevented from continuing feeding, the chamfering process is avoided, and when chamfering does not generate chamfering, and the finishing joint cutting is finished.

Description

Aircraft finish machining connects chamfer device Technical Field The invention relates to the technical field of aircraft structure assembly, in particular to an aircraft finish machining joint rounding device. Background At present, the chamfering work of the aircraft butt joint adopts a manual mode to carry out chamfering after finishing the joint finish machining, and the quantity of sharp edges required to be rounded is more, so that the labor intensity is high, and the quality stability is difficult to ensure. Meanwhile, in the actual operation process, the method is influenced by the perpendicularity deviation of the end face of the hole and the axis of the hole and the clearance fit deviation of the cutter and the axis of the hole, and the requirement of higher coaxiality is difficult to meet by directly machining by the cutter, so that the dimension consistency of the rounding angle is difficult to ensure. In addition, during processing, the available processing space is extremely limited due to the small distance between the tabs, which further increases the processing difficulty. Therefore, under the limited space environment, accurate and stable chamfering processing effect is difficult to realize by simply conducting chamfering operation by means of a traditional cutter. Therefore, an effective, reliable and limitable finish joint rounding device needs to be developed, and meanwhile, certain portability and flexibility are needed to adapt to a narrow operation space and different use scenes. Disclosure of Invention The technical problem solved by the invention is to provide a rounding device for an airplane finish machining joint, so as to solve the problems in the background technology. The technical problems solved by the invention are realized by adopting the following technical scheme: The utility model provides an aircraft finish machining connects chamfer device, includes cutter arbor, chamfer countersink, stopper, guide bushing, joint lug and finish machining joint, wherein, the finish machining connects the setting at joint lug front end, the cutter arbor is arranged in and is connected the lug rear end, and cutter arbor one end is provided with the draw-in groove, install the chamfer countersink on the draw-in groove, be equipped with R type cutting edge on the chamfer countersink to be provided with on the cutter arbor that is located the chamfer countersink outside and be used for with the stopper that finish machining connects the contact, the cutter arbor other end is equipped with guide bushing for guide cutter arbor's direction of working prevents that the cutter from taking place axial offset or shake in the course of working. In the invention, one side of the cutter bar is provided with a connecting hole for connecting with an air gun. In the invention, the cutter bar and the chamfering countersink adopt a modularized structure, so that the chamfering countersink with different specifications can be conveniently replaced, and different processing requirements can be met. In the invention, the front end of the joint lug is provided with a joint hole for bearing a finished joint. In the invention, the rear end of the joint lug is provided with a joint hole for bearing a cutter bar. In the invention, the limiter is provided with a bearing for mounting the limiter on the cutter bar. Before a finishing joint is rounded, a limiter is sleeved on a cutter bar, a rounding countersink is installed according to a clamping groove on the cutter bar, the installed rounding countersink and the cutter bar extend into a joint hole of a joint lug to be rounded, a guide bushing is installed in the joint hole at the rear end of the joint lug, the end face of the guide bushing is attached to the end face of the joint lug, the cutter bar is inserted into the guide bushing, an air gun is installed on one side of the cutter bar to provide feeding power for the cutter bar, when the rounding device starts cutting the finishing joint, the limiter feeds along the axial direction of the finishing joint along with the rounding device, when the end face of the limiter contacts with the end face of the finishing joint, namely, the cutter bar reaches a preset processing position, the rounding countersink starts to finish the rounding work of the finishing joint, at the moment, the limiter can effectively prevent continuous feeding, and therefore the phenomenon of cutting in the rounding process is avoided, and when the rounding countersink is not generated any more, the rounding countersink is used for finishing the rounding work of the finishing joint. The invention has the beneficial effects that after finishing of the aircraft joint, the R-angle machining requirement of the finishing of the joint can be rapidly and accurately finished, so that the problems of low efficiency and low accuracy in the traditional R-angle machining process are avoided, meanwhile, the problem of poor molding in the R-angle machin