Combined drill jig assistive device for machining small-diameter threaded hole in inner cavity of large shell

Abstract

The utility model discloses a combined drill jig auxiliary tool for machining a small-diameter threaded hole in an inner cavity of a large shell, which is used for solving the machining problem of the small-diameter threaded hole in the inner cavity of the large shell and belongs to the technical field of machining. The drilling jig comprises a first drilling jig body and a second drilling jig body, the first drilling jig body comprises a first transverse plate, first vertical plates are perpendicularly arranged at the two ends of the first transverse plate respectively, the first vertical plates and the first transverse plate are located on the same plane after being installed, a plurality of first guide holes are formed in the plate face of the first transverse plate, and one or two fastening holes are formed in the plate face of each first vertical plate. The second drilling jig comprises a plurality of L-shaped plates, each L-shaped plate comprises a first straight plate and a second straight plate, a second guide hole is formed in the plate face of each first straight plate, and a first threaded hole is formed in the plate face of each second straight plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, in particular to a combined drilling jig auxiliary tool for processing a small-diameter threaded hole in the inner cavity of a large shell. Background Art

[0002] The company undertakes the processing tasks of various scientific research and production projects, especially large shell parts with complex internal structures and various shapes. Due to limited space dimensions, existing equipment processing centers cannot directly cut and form them.

[0003] The total length of a shell is 1213mm, and there are 56 M2-6H threaded holes on the 7 reinforcement ribs of the inner cavity (such as Figure 1 and 16 As shown in the figure, due to its limited position, the horizontal head of the machining center interferes with the machining position and cannot be directly processed to the process size. A combined drilling jig positioning aid is designed, combined with manual tapping to complete the processing of the threaded hole. Utility Model Content

[0004] The utility model aims to provide a combined drilling jig auxiliary tool for machining small-diameter threaded holes in the inner cavity of a large shell, which is used to solve the difficult problem of machining small-diameter threaded holes in the inner cavity of a large shell.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] A combined drilling jig auxiliary tool for processing small-diameter threaded holes in the inner cavity of a large shell includes a drilling jig 1 and a drilling jig 2. The drilling jig 1 includes a horizontal plate 1, and a vertical plate 1 is vertically arranged at each end of the horizontal plate 1. After installation, the vertical plate 1 and the horizontal plate 1 are in the same plane. The surface of the horizontal plate 1 is provided with several guide holes 1, and the surfaces of the two vertical plates 1 are each provided with one or two fastening holes; the drilling jig 2 includes several L-shaped plates, and the L-shaped plates include a straight plate 1 and a straight plate 2. The surface of the straight plate 1 is provided with a guide hole 2, and the surface of the straight plate 2 is provided with a threaded hole 1.

[0007] When in use, first, the top screws are passed through the fastening holes of the two vertical plates 1 relative to each other, the drilling jig 1 is tightened inside the shell, and then the threaded holes are made according to the positions of the guide holes 1, and then the drilling jig 1 is removed from the inside of the shell.

[0008] Then fix the drilling jig 2 to the threaded hole just made through the threaded hole 1, that is, use bolts to pass through the threaded hole 1 and the threaded hole in turn to fix the drilling jig 2 inside the shell, and then start making the threaded hole in the other direction based on the guide hole 2.

[0009] Further preferably, each guide hole (1) of the horizontal plate (1) is provided with a first guide hole on one side of the first guide hole, and the center line connecting the first guide hole and the first guide hole is parallel to the first vertical plate. The first vertical plate (1) is provided with a second guide hole on one side of the second guide hole, and the center line connecting the second guide hole and the second guide hole is parallel to the second vertical plate. The first threaded hole (1) is provided with a second threaded hole on one side. The shell material is not suitable for directly forming threaded holes. Threaded holes can be formed by first drilling guide holes and then tapping.

[0010] Further preferably, the closest distance between the guide hole 1 and the lead hole 1 and the edge of the horizontal plate 1 is equal to 5.5 mm.

[0011] Further preferably, the diameters of the guide hole 1 and the guide hole 2 are 1.6 mm, and the diameters of the guide hole 1 and the guide hole 2 are 2.0 mm.

[0012] Further preferably, the number of the L-shaped plates is two, and the two L-shaped plates are connected by a horizontal plate 2. Under the condition of ensuring accuracy, two L-shaped plates can be made on the horizontal plate 2 to speed up the efficiency of making the threaded holes.

[0013] The tooling of the utility model has scientific design and simple structure, saves time and labor, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 Represents a cross-sectional view of the shell.

[0017] Figure 2 express Figure 1 Cross-sectional view at CC.

[0018] Figure 3 express Figure 1 Cross-sectional view at DD in the middle.

[0019] Figure 4 A schematic elevation diagram of a drilling template according to an embodiment of the present invention is shown.

[0020] Figure 5 A top view of a drilling jig according to an embodiment of the present invention is shown.

[0021] Figure 6 Example 1 Drilling template 1 Figure 5Enlarged view of the circle in the middle.

[0022] Figure 7 Example 1 Drilling template 1 Figure 4 Schematic diagram of the center C direction.

[0023] Figure 8 A schematic elevation diagram of the second drilling template of Example 1 is shown.

[0024] Figure 9 A top view of a drilling jig 2 according to embodiment 1 is shown.

[0025] Figure 10 A left side schematic diagram of a drilling jig 2 according to embodiment 1 is shown.

[0026] Figure 11 A top view of a drilling jig according to a second embodiment is shown.

[0027] Figure 12 Example 2 Drilling template 1 Figure 11 Schematic diagram of the center C direction.

[0028] Figure 13 A schematic diagram of the second elevation of the drilling template of Example 2 is shown.

[0029] Figure 14 A top view of a second drilling jig according to a second embodiment of the present invention is shown.

[0030] Figure 15 Shows a left side schematic diagram of a second drilling jig according to a second embodiment.

[0031] Figure 16 A cross-sectional view of the interior of the housing is shown.

[0032] In the figure: 1- horizontal plate 1, 2- vertical plate 1, 3- guide hole 1, 4- fastening hole, 5- guide hole 1, 6- guide hole 2, 7- threaded hole 1, 8- guide hole 2, 9- threaded hole 2. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0034] In the description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance. It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms based on specific circumstances.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0036] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0037] A combined drilling jig auxiliary tool for processing small-diameter threaded holes in the inner cavity of a large shell includes a drilling jig 1 and a drilling jig 2. The drilling jig 1 includes a horizontal plate 1, and a vertical plate 2 is vertically arranged at both ends of the horizontal plate 1. After installation, the vertical plate 2 and the horizontal plate 1 are in the same plane. The surface of the horizontal plate 1 is provided with a plurality of guide holes 3, and the surfaces of the two vertical plates 2 are each provided with one or two fastening holes 4; the drilling jig 2 includes a plurality of L-shaped plates, and the L-shaped plates include a straight plate 1 and a straight plate 2. The surface of the straight plate 1 is provided with a guide hole 2 6, and the surface of the straight plate 2 is provided with a threaded hole 7.

[0038] The horizontal plate 1 is provided with a guide hole 15 on one side of each guide hole 13, and the center line connecting the guide hole 15 and the guide hole 13 is parallel to the vertical plate 12. The straight plate 1 is provided with a guide hole 28 on one side of the guide hole 26, and the center line connecting the guide hole 28 and the guide hole 26 is parallel to the straight plate 2. The threaded hole 17 is provided with a threaded hole 29 on one side.

[0039] The diameters of guide hole 1 5 and guide hole 2 8 are 1.6 mm, and the diameters of guide hole 1 3 and guide hole 2 6 are 2.0 mm.

[0040] There are two L-shaped plates, which are connected by a second transverse plate. Example 1

[0041] In this embodiment, the positioning processing is completed by drilling jig 1 and drilling jig 2. Figure 2 and Figure 3 The M2 threaded hole in the left half of the view. Figure 1 It can be seen that a total of 7 threaded holes for reinforcing ribs need to be processed.

[0042] like Figure 7 As shown, the fastening hole 4 in the C-direction view is a threaded hole used to fasten the drilling jig 1 to ensure that the hole position does not move axially during the processing of the M2 threaded hole.

[0043] When using, first clamp the vertical plate 2 of template 1 inside the shell. At this time, define the upper end of horizontal plate 1 as positioning surface 1 and the lower end as positioning surface 2. Then, according to positioning surface 1, process the 7-φ1.6 guide hole in sequence. Then, turn it 180° on the spot, and use positioning surface 2 to locate and process the threaded guide hole 7-φ2, with a positioning accuracy of 0.05.

[0044] Then use bolts to connect and position the M2 threaded holes in the drilling jig 2 with the M2 threaded holes processed above, that is, connect and fix the drilling jig 2 to the shell. Next, use the drilling jig 2 to process the M2-6H threaded holes in the shell at 90° direction, and use Figure 8-9 The drilling jig 2 shown can process the M2 threaded holes on two reinforcing ribs at the same time.

[0045] The specific process is to first connect the threaded hole 2 9 with the threaded hole of the shell by bolts. After the φ1.6mm guide hole 2 8 of the two reinforcing ribs is processed, the drilling jig 2 is removed, and then the threaded hole 1 7 is connected with the threaded hole of the shell by bolts, and then the guide hole 2 6 is used to complete the M2-6H threaded hole. Finally, the drilling jig 2 is removed to process the threaded holes of the two reinforcing ribs.

[0046] In this embodiment, the nearest edge of the guide hole 5 and the guide hole 3 from the horizontal plate 1 is 5.5 mm. Figure 4 and Figure 5 As shown, the distance between the lead holes and between the guide holes is 152.5 mm. Example 2

[0047] In this embodiment, the positioning processing is completed by drilling jig 1 and drilling jig 2. Figure 2 and Figure 3 M2 threaded holes in the right half of the view. Figure 1 It can be seen that a total of 7 threaded holes for reinforcing ribs need to be processed.

[0048] like Figure 12 As shown, the fastening hole 4 in the C-direction view is a threaded hole used to fasten the drilling jig 1 to ensure that the hole position does not move axially during the processing of the M2 threaded hole.

[0049] When using, first clamp the vertical plate 2 of template 1 inside the shell. At this time, define the upper end of horizontal plate 1 as positioning surface 1 and the lower end as positioning surface 2. Then, according to positioning surface 1, process the 7-φ1.6 guide hole in sequence. Then, turn it 180° on the spot, and use positioning surface 2 to locate and process the threaded guide hole 7-φ2, with a positioning accuracy of 0.05.

[0050] Then use bolts to connect and position the M2 threaded holes in the drilling jig 2 with the M2 threaded holes processed above, that is, connect and fix the drilling jig 2 to the shell. Next, use the drilling jig 2 to process the M2-6H threaded holes in the shell at 90° direction, and use Figure 13-14 The drilling jig 2 shown can process the M2 threaded holes on two reinforcing ribs at the same time.

[0051] The specific process is to first connect the threaded hole 2 9 with the threaded hole of the shell by bolts. After the φ1.6mm guide hole 2 8 of the two reinforcing ribs is processed, the drilling jig 2 is removed, and then the threaded hole 1 7 is connected with the threaded hole of the shell by bolts, and then the guide hole 2 6 is used to complete the M2-6H threaded hole. Finally, the drilling jig 2 is removed to process the threaded holes of the two reinforcing ribs.

[0052] In this embodiment, the distance between the lead hole 5 and the guide hole 3 and the nearest edge of the horizontal plate 1 is 6.5 mm. Figure 11 As shown, the distance between the lead holes and between the guide holes is 152.5 mm.

[0053] The above description is only a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Although detailed descriptions have been made with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments, and they should all be covered by the scope of protection of the claims.

Claims

1. A combined jig for machining small-diameter threaded holes in the inner cavity of a large shell, characterized by: It comprises a drilling jig 1 and a drilling jig 2, wherein the drilling jig 1 comprises a horizontal plate 1 (1), and vertical plates 1 (2) are vertically arranged at both ends of the horizontal plate 1 (1), and the vertical plates 1 (2) and the horizontal plate 1 (1) are arranged on the same plane after being installed, and the surface of the horizontal plate 1 (1) is provided with a plurality of guide holes 1 (3), and the surfaces of the two vertical plates 1 (2) are both provided with one or two fastening holes (4); The drilling jig 2 includes a plurality of L-shaped plates, wherein the L-shaped plates include a straight plate 1 and a straight plate 2. The straight plate 1 is provided with a guide hole 2 (6) on its surface, and the straight plate 2 is provided with a threaded hole 1 (7) on its surface.

2. A combined drilling jig for machining small-diameter threaded holes in the inner cavity of a large shell according to claim 1, characterized in that: The horizontal plate 1 (1) is provided with a guide hole 1 (5) on one side of each guide hole 1 (3), and the center line connecting the guide hole 1 (5) and the guide hole 1 (3) is parallel to the vertical plate 1 (2); the straight plate 1 is provided with a guide hole 2 (8) on one side of the guide hole 2 (6), and the center line connecting the guide hole 2 (8) and the guide hole 2 (6) is parallel to the straight plate 2; the threaded hole 1 (7) is provided with a threaded hole 2 (9) on one side.

3. A combined drilling jig for machining small-diameter threaded holes in a large housing cavity according to claim 2, characterized in that: The closest distance between the guide hole 1 (3) and the guide hole 1 (5) and the edge of the horizontal plate 1 (1) is 5.5 mm.

4. A combined drilling jig for machining small-diameter threaded holes in a large housing cavity according to claim 3, characterized in that: The diameters of the guide hole 1 (5) and the guide hole 2 (8) are 1.6 mm, and the diameters of the guide hole 1 (3) and the guide hole 2 (6) are 2.0 mm.

5. A combined drilling jig for machining small-diameter threaded holes in the inner cavity of a large shell according to any one of claims 1 to 4, characterized in that: There are two L-shaped plates, which are connected by a second transverse plate.

Images