Reverse hole guiding device for narrow space

Abstract

The invention belongs to the technical field of aerospace manufacturing, and provides a narrow and small space reverse hole guiding device which comprises an outer plate, an inner plate, an inner plate and a guide rod. The inner plate is opposite to the outer plate, a movable guide column is arranged at one end of the inner plate, the other end of the inner plate is fixedly connected with the other end of the outer plate, and a certain distance is formed between the outer plate and the inner plate; and the tightening bolt is mounted on the inner plate and is used for fixing a part. The technical problem that reverse hole guiding is difficult in an existing narrow space is solved, and reverse hole guiding operation in a narrow operation space is achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aerospace manufacturing and aircraft assembly, and particularly relates to a narrow space reverse hole guiding device in an aircraft structural assembly process. BACKGROUND

[0002] In the aircraft structural assembly process, there is a requirement for hole drilling in a narrow space, that is, there are hole mark points and guide holes on the inner surface of a small opening part, and the small opening part needs to be drilled along the inner surface points or guide holes which are not suitable for operation. Or after multiple parts are assembled, a narrow space is formed, and hole guiding operation in the narrow space is required at the same time. At this time, the operation space is narrow, and it is difficult to complete the hole guiding and drilling operation.

[0003] Under normal circumstances, the hole position on one side of the narrow space is returned to the outer surface which can be operated by measuring and marking, and then the hole is drilled from the outer surface to the inside. This operation method requires a high skill level of the operator, and is prone to cause hole position deviation after drilling; if there are guide hole parts or other parts in the original narrow space, the internal parts are prone to form an eight-character hole, or even a misaligned hole problem. SUMMARY

[0004] The present application provides a narrow space reverse hole guiding device to solve the problem of difficulty in reverse hole guiding in a narrow space, realizes reverse hole guiding operation in a narrow operation space, and increases the drilling accuracy.

[0005] In order to achieve the above purpose, the application adopts the following technical scheme: A narrow space reverse hole guiding device comprises: An outer plate having a handle drill sleeve at one end; An inner plate arranged opposite to the outer plate, having a movable guide column at one end and being fixedly connected with the other end of the outer plate, the outer plate and the inner plate having a certain distance therebetween; A tightening bolt installed on the inner plate for fixing parts.

[0006] As a further scheme of the application, the other end of the outer plate and the inner plate is connected by a fixed bolt nut, and a spacer is arranged therebetween.

[0007] As a further scheme of the application, a stepped hole is arranged on the other end of the outer plate and the inner plate, the stepped hole comprises a bolt hole segment and a placement hole segment, the placement hole segment is used for accommodating the spacer, and the spacer is square in cross section.

[0008] As a further scheme of the application, a through hole is arranged on the outer plate, a fixed bushing is interference-fitted in the through hole, the handle drill sleeve is installed in the fixed bushing, and the two are gap-fitted.

[0009] As a further scheme of the present application: the inner plate is provided with a first threaded hole, a guide column is arranged in the first threaded hole, and the guide column is screwed with the first threaded hole; the guide column is provided with a guide column head, the size of the guide column head is determined according to the size of the hole to be counter-drilled in the part, or the guide column head is in the shape of a sharp cone for positioning the mark point on the inner surface of the part.

[0010] As a further scheme of the present application: the inner plate is provided with a second threaded hole, the second threaded hole is connected with the tightening bolt, and one end of the tightening bolt extends into the space between the outer plate and the inner plate.

[0011] As a further scheme of the present application: the outer plate and the inner plate are both designed in a stepped structure, and the inner sides of the outer plate and the inner plate are both provided with a boss part, and the tightening bolt is located outside the boss part.

[0012] As a further scheme of the present application: the handle drill sleeve is designed in an integrated structure, including a handle and a drill sleeve, the drill sleeve is in clearance fit with the fixed bushing, the drill sleeve is provided with a drill jig hole, and the handle is designed in a bent structure.

[0013] As a further scheme of the present application: the length of the spacer is determined according to the thickness of the part.

[0014] In summary, due to the adoption of the above technical scheme, the present application has the following beneficial effects: 1. The outer plate of the device is provided with a fixed bushing and a handle drill sleeve at the hole position, thereby realizing high-precision counter-drilling operation. The handle drill sleeve can be selected in different specifications according to actual conditions, thereby increasing the adaptability of the device.

[0015] 2. The inner plate and the guide column of the device are used to transmit the hole position information in a narrow space to the outer surface through the guide column. The guide column is provided in multiple specifications, thereby facilitating selection according to different working conditions.

[0016] 3. The outer plate and the inner plate of the device are provided with a sink, and the size of the sink is consistent with the spacer, thereby being used for quick fixing of the device. The spacer is provided in different specifications, thereby being suitable for counter-drilling operation of parts with different thicknesses.

[0017] 4. The tightening bolt of the device is used for quick fixing of the device and the part to be counter-drilled.

[0018] 5. The present application designs a narrow-space counter-drilling device, thereby realizing simple and efficient counter-drilling operation in a narrow space, requiring very low skill level of the operator, and having high counter-drilling precision.

[0019] 6. The present application realizes quick counter-drilling operation in a narrow space in a certain type of aircraft wing structure after assembly, and the position degree and the hole diameter precision of the counter-drilled hole meet the use requirements. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 Figure 1 is a structural schematic diagram of a reverse hole guiding device in a narrow space according to the present application; Fig. 2 Figure 2 is a structural schematic diagram of stepped holes of outer and inner plates according to the present application; Fig. 3 Figure 3 is a structural schematic diagram of a connecting structure of a guide column according to the present application.

[0021] Mark explanation: 1-outer plate, 2-inner plate, 3-pad, 4-fixed bushing, 5-handle drill sleeve, 6-fixed bolt nut, 7-tightening bolt, 8-guide column. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the embodiments of the present application will be described in more detail below with reference to the drawings of the embodiments of the present application.

[0023] In the drawings, the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, not all of the embodiments.

[0024] The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. All other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0025] The drawings will be described below in conjunction with Figs. 1-3 The embodiments of the present application will be described in detail.

[0026] The present application discloses a reverse hole guiding device in a narrow space, which comprises: An outer plate 1, one end of which is provided with a handle drill sleeve; An inner plate 2, which is arranged opposite to the outer plate 1, one end of which is provided with a movable guide column, and the other end of which is connected and fixed with the other end of the outer plate 1, the outer plate 1 and the inner plate 2 having a certain distance therebetween; A tightening bolt 7, which is installed on the inner plate 2, for fixing parts.

[0027] Preferably, the other end of the outer plate 1 and the inner plate 2 is connected through a fixed bolt nut 6, and a pad 3 is arranged therebetween.

[0028] Preferably, stepped holes are arranged on the other end of the outer plate 1 and the inner plate 2, the stepped holes comprising a bolt hole segment and a placement hole segment, the placement hole segment being used for accommodating the pad 3, and the pad 3 having a square cross section.

[0029] Preferably, the outer plate 1 is provided with a through hole, a fixed bushing 4 is fitted in the through hole in an interference fit, and the handle drill sleeve 5 is installed in the fixed bushing 4 in a clearance fit.

[0030] Preferably, the inner plate 2 is provided with a first threaded hole, a guide column 8 is arranged in the first threaded hole in a threaded fit, and the guide column 8 is provided with a guide column head, the size of the guide column head is determined according to the size of the hole to be counter bored in the part, or the guide column head is in the shape of a sharp cone for positioning the mark point of the hole in the inner surface of the part.

[0031] Preferably, the inner plate 2 is further provided with a second threaded hole, the tightening bolt 7 is connected in the second threaded hole, and one end of the tightening bolt 7 extends between the outer plate 1 and the inner plate 2.

[0032] Preferably, the outer plate 1 and the inner plate 2 are both designed in a stepped structure, and the inner sides of the two are provided with boss portions, and the tightening bolt 7 is located outside the boss portions.

[0033] Preferably, the handle drill sleeve 5 is of an integrated structure, including a handle and a drill sleeve, the drill sleeve is in a clearance fit with the fixed bushing 4, the drill sleeve is provided with a drill jig hole, and the handle is designed in a bent structure.

[0034] Preferably, the length of the spacer 3 is determined according to the thickness of the part.

[0035] In use, the device is inserted into the position of the part with a counter bored hole, the outer plate 1 is located at the side of the part to be counter bored, and the inner plate 2 is located at the side of the guide hole or the mark point of the hole in the part. The guide column 8 is fixed on the inner plate 2 through the threads on the guide rod, and the guide column head is in a fit with the guide hole of the part. The thickness of the spacer 3 is adjusted to meet the working conditions of parts with different wall thicknesses, so as to ensure that the part is smoothly inserted from the outer plate 1 and the inner plate 2, and the clearance between the part and the outer plate 1 and the inner plate 2 is not greater than 1 mm. The device is fastened with the part by using the tightening bolt 7. A handle drill sleeve 5 with a suitable diameter is selected to cooperate with a hole making tool to make the hole position of the hole to be counter bored.

[0036] Thus, the purpose of the present application is achieved.

[0037] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A reverse hole-guiding device for a narrow space, characterized in that: include: an outer plate, one end of which is mounted with a handle drill sleeve; The inner plate is arranged opposite to the outer plate, one end of which is provided with a movable guide column, and the other end is connected and fixed to the other end of the outer plate, and there is a certain distance between the outer plate and the inner plate; Tighten the bolts that are installed on the inner plate to secure the parts.

2. A narrow space reverse hole guiding device according to claim 1, characterized in that: The outer plate and the other end of the inner plate are fixed by bolts and nuts, and a pad is provided between the two.

3. A narrow space reverse hole guiding device according to claim 2, characterized in that: A stepped hole is provided on the other end of the outer plate and the inner plate. The stepped hole includes a bolt hole section and a placement hole section. The placement hole section is used to accommodate a pad. The pad has a square cross section.

4. A narrow space reverse hole guiding device according to claim 3, characterized in that: The outer plate is provided with a through hole, and a fixed bushing is interference-fitted in the through hole. The handle drill sleeve is installed in the fixed bushing, and the two are clearance-fitted.

5. The narrow space reverse hole guiding device according to claim 3, characterized in that: A first threaded hole is provided on the inner plate, and a guide pin is provided in the first threaded hole. The two are threadedly matched. A guide pin head is provided on the guide pin. The size of the guide pin head is determined according to the size of the hole to be reversed in the part, or the guide pin head is in a pointed cone shape, which is used to locate the hole mark point on the inner surface of the part.

6. The narrow space reverse hole guiding device according to claim 5, characterized in that: A second threaded hole is further provided on the inner plate, and the tightening bolt is connected in the second threaded hole, and one end of the tightening bolt extends between the outer plate and the inner plate.

7. A narrow space reverse hole guiding device according to any one of claims 1 to 6, characterized in that: The outer plate and the inner plate both adopt a stepped structure design, and boss portions are provided on the inner sides of both, and the tightening bolts are located outside the boss portions.

8. The narrow space reverse hole guiding device according to claim 4, characterized in that: The handle drill sleeve is an integrated structure, including a handle and a drill sleeve. The drill sleeve is clearance-matched with a fixed bushing. A drilling template hole is provided in the drill sleeve. The handle adopts a bent structure design.

9. The narrow space reverse hole guiding device according to claim 3, characterized in that: The length of the pad is determined according to the thickness of the part.

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