CN218965386U

CN218965386U - Scribing tool based on positioning by hole

Info

Publication number: CN218965386U
Application number: CN202223220743.9U
Authority: CN
Inventors: 王海玲; 邓伯孟; 周山峰; 邓飞虎; 郭艳兵
Original assignee: Avic Chengfei Commercial Aircraft Co ltd
Current assignee: Avic Chengfei Commercial Aircraft Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-05-05
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses a scribing tool based on hole positioning in the technical field of aircraft assembly, which comprises two telescopic rods, wherein one end of each telescopic rod is rotatably connected with a rotating shaft and is perpendicular to the rotating shaft, one ends of the two telescopic rods, which are far away from the rotating shaft, are respectively provided with a positioning rod parallel to the rotating shaft, the lower ends of the positioning rods are provided with positioning parts matched with reference holes of parts, and the center of the rotating shaft is provided with a through hole through which a scribing pen can pass. When the scribing tool is used for positioning the guide hole, reference conversion is realized by utilizing the matching of the positioning rod and the reference hole, and then the position of the guide hole is determined by adjusting the length of the telescopic rod, so that the scribing tool is convenient and quick, the positioning efficiency can be improved, and the scribing tool has higher positioning precision.

Description

Scribing tool based on positioning by hole

Technical Field

The utility model relates to the technical field of aircraft assembly, in particular to a scribing tool based on hole positioning.

Background

In the development stage or the pre-batch production stage of the aircraft, due to various reasons such as design change, manufacturing technology, assembly problems and the like, coordination holes or guide holes are not formed in all parts when the parts are delivered and assembled, so that the positions of the guide holes to be formed need to be manually marked for positioning in order to facilitate the assembly of the parts. Because aircraft products are mostly curved parts, hole making references are difficult to find, and thus are usually positioned with existing coordinated holes or other high-precision holes as references. However, the existing method generally adopts a steel rule to mark and position when determining the position of the guide hole to be positioned relative to the reference hole, and has the defects of large error, long time consumption and the like.

Disclosure of Invention

In order to overcome the defects of large error, more time consumption and the like in the existing guide hole positioning method, the utility model aims to solve the technical problems that: provided is a scribing tool based on hole positioning, which can improve positioning accuracy and positioning efficiency.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a marking tool based on with hole location, includes that one end rotates with the axis of rotation to be connected and with axis of rotation vertically two telescopic links, and the one end that the axis of rotation was kept away from to two telescopic links all is equipped with the locating lever parallel with the axis of rotation, the lower extreme of locating lever is equipped with the locating part with part benchmark hole assorted, the center of axis of rotation is equipped with the through-hole that can supply the marking pen to pass. When the tool is used for positioning, the distance between the designed coordination hole and the two reference holes is determined according to the two selected reference holes, then the positioning part of one positioning rod is inserted into one positioning hole, the positioning part of the other positioning rod is inserted into the other positioning hole by adjusting the length and the angle of the two telescopic rods, finally the length of the two telescopic rods is adjusted according to the distance determined before, at the moment, the position corresponding to the center of the rotating shaft is the position of the guide hole to be positioned, and the position of the guide hole can be marked on the part by utilizing the through hole of the scribing pen penetrating through the center of the rotating shaft. Of course, the length of the telescopic rod can be adjusted first, and then the two positioning rods are inserted into the two reference holes by rotating the telescopic rod to determine the positions of the guide holes.

The telescopic rod has the structure that the telescopic rod comprises a fixed rod and a movable rod, a sliding groove is formed in the fixed rod along the length direction of the fixed rod, and a sliding rail which is in sliding connection with the sliding groove is arranged in the movable rod along the length direction of the movable rod. One end of the fixed rod and the movable rod which are not connected can be respectively connected with the rotating shaft and the positioning rod.

For the convenience fix it after adjusting the length of telescopic link be equipped with on the dead lever with the screw hole of spout intercommunication, threaded hole is equipped with the locking bolt that can lock the slide rail in the spout.

Further, an opening parallel to and communicated with the sliding groove is formed in the side face of the fixed rod, a graduated scale is arranged along the edge of the opening, and a pointer aligned with the graduated scale is arranged at the end part of one end of the movable rod, which is positioned in the sliding groove. The fixed rod is directly provided with the graduated scale, so that the length of the telescopic rod can be more conveniently determined and adjusted.

Since the reference holes on the parts are usually provided with different apertures, in order to adapt to the different reference holes, the positioning part at the lower end of the positioning rod is provided with a multi-stage stepped column with gradually reduced outer diameter from top to bottom. The multi-stage step columns with different outer diameters can be inserted into the reference holes with different apertures, so that reference conversion is realized.

Furthermore, the positioning rods and the step columns are of semi-cylindrical structures, and the two telescopic rods can be rotated and folded to enable the two positioning rods and the step columns to form a complete cylindrical structure. When only one reference hole is available, two positioning rods can be folded to form one positioning rod, and then the positioning rod is inserted into the reference hole for positioning, so that the use flexibility is improved.

The beneficial effects of the utility model are as follows: the marking tool realizes reference conversion by utilizing the matching of the positioning rod and the reference hole, and then the position of the guide hole is determined by adjusting the length of the telescopic rod, so that the marking tool is convenient and quick and has higher positioning precision; the convenience for adjusting and determining the length of the telescopic rod can be improved by arranging the locking bolt and the graduated scale on the telescopic rod; in addition, the positioning rod and the positioning part are designed into a semi-cylindrical structure, when only one reference hole is available, the two positioning rods can be folded to form one positioning rod for use, and the positioning rod has good flexibility.

Drawings

Fig. 1 is a schematic diagram of the structure of the present utility model.

The drawing is marked as a 1-rotating shaft, a 2-telescopic rod, a 3-positioning rod, an 11-through hole, a 21-fixed rod, a 22-movable rod, a 23-sliding groove, a 24-sliding rail, a 25-locking bolt and a 31-positioning part.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1, the scribing tool based on hole positioning comprises two telescopic rods 2, one ends of the two telescopic rods 2 are rotatably connected with a rotating shaft 1 and are perpendicular to the rotating shaft 1, one ends of the two telescopic rods 2, which are far away from the rotating shaft 1, are respectively provided with a positioning rod 3 parallel to the rotating shaft 1, the lower end of each positioning rod 3 is provided with a positioning part 31 matched with a part reference hole, and the center of the rotating shaft 1 is provided with a through hole 11 through which a scribing pen can pass. The telescopic rod 2 and the rotating shaft 1 can be in rotating connection by adopting a structure similar to a hinge. The positioning portion 31 of the positioning rod 3 is preferably sized to approximate the aperture of the selected reference hole, thereby reducing the positional error of the positioning rod 3 and the reference hole. The size of the through hole 11 in the center of the rotation shaft 1 is preferably the same as the outer diameter of the scribing pen, so that the positioning accuracy can be improved.

The process of positioning by adopting the tool is as follows: firstly, determining the distance between a designed guide hole and two reference holes according to the two selected reference holes, inserting the positioning part 31 of one positioning rod 3 into one positioning hole, inserting the positioning part 31 of the other positioning rod 3 into the other positioning hole by adjusting the length and angle of the two telescopic rods 2, finally adjusting the length of the two telescopic rods 2 according to the determined distance, wherein the two telescopic rods 2 can possibly rotate in the process, after the two telescopic rods are finally adjusted in place, the position corresponding to the center of the rotating shaft 1 is the position of the guide hole, and then marking the position of the guide hole on a part by using a marking pen to pass through the through hole 11 in the center of the rotating shaft 1. Of course, the length of the telescopic rod 2 may be adjusted according to the determined distance, and then the two positioning rods 3 may be inserted into the two reference holes by rotating the telescopic rod 2 to determine the position of the guide hole.

The telescopic rod 2 can have various structural forms, and the telescopic rod 2 comprises a fixed rod 21 and a movable rod 22, wherein the fixed rod 21 is provided with a sliding groove 23 along the length direction thereof, and the movable rod 22 is provided with a sliding rail 24 which is in sliding connection with the sliding groove 23 along the length direction thereof. The end of the fixed rod 21 and the movable rod 22 which are not connected can be respectively connected with the rotating shaft 1 and the positioning rod 3, and can also be mutually replaced. The sliding groove 23 and the sliding rail 24 are not cylindrical, so that the sliding groove and the sliding rail are prevented from rotating, and the use is prevented from being influenced. In order to facilitate the adjustment of the relative positions of the fixed rod 21 and the movable rod 22, a damping structure may be provided between the slide groove 23 and the slide rail 24.

In order to facilitate fixing the telescopic rod 2 after adjusting the length thereof, the fixing rod 21 is provided with a threaded hole communicated with the sliding groove 23, and a locking bolt 25 capable of locking the sliding rail 24 in the sliding groove 23 is arranged in the threaded hole. Further, an opening parallel to and communicated with the chute 23 is formed in the side surface of the fixed rod 21, a graduated scale is arranged along the edge of the opening, and a pointer aligned with the graduated scale is arranged at the end of one end of the movable rod 22 located in the chute 23. The length of the telescopic rod 2 can be more conveniently determined and adjusted by directly arranging the graduated scale on the fixed rod 21.

Since the reference holes on the parts generally have different apertures, the positioning portion 31 at the lower end of the positioning rod 3 may be configured as a multi-stage stepped column with gradually decreasing outer diameter from top to bottom in order to accommodate the different reference holes. The multi-stage step columns with different outer diameters can be inserted into the reference holes with different apertures, so that reference conversion is realized. The size of the step post is determined according to the reference hole on the common part during design.

Furthermore, the positioning rods 3 and the step columns are of semi-cylindrical structures, and the two telescopic rods 2 can be rotated and folded to enable the two positioning rods 3 and the step columns to form a complete cylindrical structure. The step column of the semi-cylindrical structure can be matched with the reference hole to realize reference conversion, when only one reference hole is available, the two positioning rods 3 can be folded to form one positioning rod, and then the positioning rod is inserted into the reference hole to be positioned, so that the flexibility of the use of the scribing tool is improved.

Claims

1. Scribing tool based on with hole location, characterized by: including one end and axis of rotation (1) rotate be connected and with axis of rotation (1) vertically two telescopic links (2), the one end that axis of rotation (1) was kept away from to two telescopic links (2) all is equipped with locating lever (3) parallel with axis of rotation (1), the lower extreme of locating lever (3) is equipped with part benchmark hole assorted location portion (31), the center of axis of rotation (1) is equipped with through-hole (11) that can supply the marking off pen to pass.

2. A hole-positioning-based scribing tool as in claim 1, wherein: the telescopic rod (2) comprises a fixed rod (21) and a movable rod (22), a sliding groove (23) is formed in the fixed rod (21) along the length direction of the fixed rod, and a sliding rail (24) which is in sliding connection with the sliding groove (23) is arranged in the movable rod (22) along the length direction of the movable rod.

3. A hole-positioning-based scribing tool as in claim 2, wherein: the fixing rod (21) is provided with a threaded hole communicated with the sliding groove (23), and a locking bolt (25) capable of locking the sliding rail (24) in the sliding groove (23) is arranged in the threaded hole.

4. A hole-positioning-based scribing tool as in claim 3, wherein: the side of the fixed rod (21) is provided with an opening which is parallel to and communicated with the chute (23), a graduated scale is arranged along the edge of the opening, and the end part of one end of the movable rod (22) positioned in the chute (23) is provided with a pointer aligned with the graduated scale.

5. A hole-locating-based scribing tool according to any of claims 1 to 4, wherein: the positioning part (31) at the lower end of the positioning rod (3) is a multi-stage step column with the outer diameter gradually reduced from top to bottom.

6. A hole-positioning-based scribing tool according to claim 5, wherein: the positioning rods (3) and the step columns are of semi-cylindrical structures, and the two telescopic rods (2) can be folded in a rotating mode to enable the two positioning rods (3) and the step columns to form a complete cylindrical structure.