A tool for drilling and boring multiple precision holes

Abstract

The application provides a tool for drilling and boring multiple precision holes, which comprises a base 2, a stepped guide pressing plate 3, a guide pressing plate 4, a fork pad 5, a threaded spindle 6, a nut 7, a washer 8 and a fastening screw 9. The rocker arm 1 is respectively provided with precision holes 1-1, 1-2, 1-3, a precision concentric hole 1-4, small holes 1-5 and 1-6, a positioning groove 1-7 and a small double-ear groove 1-8. The base 2 is provided with a fork positioning boss 2-1, an ear positioning groove 2-2, a positioning guide boss 2-3, a positioning guide hole 2-4, a side ear drilling hole guide hole 2-5, a large chip groove 2-6 and a pad ear boss 2-7. The stepped guide pressing plate 3 is provided with a large pressing plate surface 3-1, a spindle through hole 3-2, a positioning large guide hole 3-3 and a small pressing plate surface 3-4. The guide pressing plate 4 is provided with a positioning small guide hole 4-1, a drilling guide hole 4-2, a spindle through hole 4-3 and a pressing plate surface 4-4. The fork pad 5 is provided with a spindle through hole 5-1, a tool accommodating hole 5-2 and a pad side surface 5-3. The threaded spindle 6 is provided with a threaded shaft 6-1 and a positioning shaft 6-2.

Description

Technical Field

[0001] This application relates to the field of drilling and boring machining technology for multiple precision holes in helicopter parts, and particularly to a tooling for drilling and boring multiple precision holes. Background Technology

[0002] Existing technologies often involve drilling and boring multiple precision holes on rocker arms. These rocker arms have complex shapes and multiple precision holes and multiple small holes to be machined at both ends. When boring multiple precision holes and drilling small holes, existing technologies generally use scribing and assembling fixtures for machining. This machining method requires multiple clamping, making it difficult to ensure the concentricity of the holes and easily causing deviations in the axial angle of the concentric holes. In addition, scribing and assembling fixtures take a long time and have low machining efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a tooling for drilling and boring multiple precision holes, thereby solving the drilling and boring of multiple precision holes and the drilling of two small holes on a helicopter rocker arm.

[0004] Technical solution: A tooling for drilling and boring multiple precision holes, comprising a base 2, a stepped guide plate 3, a guide plate 4, a fork pad 5, a threaded mandrel 6, a nut 7, a washer 8, and a fastening screw 9; wherein:

[0005] The rocker arm 1 is provided with precision holes 1-1, 1-2, 1-3, 1-4, 1-5, 1-6, 1-7, 1-8, 1-9, 1-10, 1-11, 1-12, 1-13, 1-14, 1-15, 1-15, 1-16, 1-17, 1-8, 1-9, 1-10, 1-11, 1-12, 1-13, 1-14, 1-15, 1-15, 1-16, 1-17, 1-18, 1-1 ...

[0006] The base 2 is provided with a fork positioning boss 2-1, an ear positioning groove 2-2, a positioning guide boss 2-3, a positioning guide hole 2-4, a side ear drilling guide hole 2-5, a large chip groove 2-6, a pad ear boss 2-7, a spindle hole 2-8, a small chip groove 2-9, a cylindrical boss 2-10, a small square boss 2-11, a large square boss 2-12, a mounting positioning strip 2-13, and a fixing bolt hole 2-14;

[0007] The stepped guide plate 3 is provided with a large pressure plate surface 3-1, a spindle through hole 3-2, a positioning large guide hole 3-3, and a small pressure plate surface 3-4;

[0008] The guide plate 4 is provided with a positioning guide hole 4-1, a drilling guide hole 4-2, a mandrel through hole 4-3, and a plate surface 4-4;

[0009] The fork pad 5 is provided with a spindle through hole 5-1, a knife receiving hole 5-2, and a side of the pad 5-3;

[0010] The threaded mandrel 6 is provided with a threaded shaft 6-1 and a positioning shaft 6-2.

[0011] Specifically, the positioning boss 2-1 of the base 2 is matched with the positioning groove 1-7 of the rocker arm 1, and the positioning guide boss 2-3 is matched with the outer end face 1-9 of the side ear of the rocker arm 1, so as to realize the positioning of the rocker arm 1.

[0012] Specifically, the base 2 pad lug 2-7 is matched with the lower end face of the rocker arm 1 precision hole 1-1.

[0013] Specifically, the threaded mandrel 6 positioning shaft 6-2 is matched with the mandrel hole 2-8 of the base 2; the threaded mandrel 6 positioning shaft 6-2 and the mandrel hole 2-8 of the base 2 are an interference fit.

[0014] Specifically, the guide hole 2-5 of the side ear of the base 2 corresponds to the small hole 1-5 of the rocker arm 1.

[0015] Specifically, the large guide hole 3-3 of the stepped guide plate 3 corresponds to the precision hole 1-1 of the rocker arm 1, and the mandrel through hole 3-2 of the stepped guide plate 3 matches the positioning shaft 6-2 of the threaded mandrel 6; the large pressure plate surface 3-1 of the stepped guide plate 3 matches the end face 1-13 of the large precision hole of the rocker arm; and the small pressure plate surface 3-4 of the stepped guide plate 3 matches the side surface 1-14 of the double ears of the rocker arm 1.

[0016] Specifically, the guide plate 4 has a small guide hole 4-1 that corresponds to the precision concentric hole 1-4 of the rocker arm 1; the guide plate 4 has a spindle through hole 4-3 that matches the positioning shaft 6-2 of the threaded spindle 6; the guide plate 4 has a pressure plate surface 4-4 that matches the end face 1-15 of the small precision hole of the rocker arm 1; and the guide plate 4 has a drilled guide hole 4-2 that corresponds to the small hole 1-6 of the rocker arm 1.

[0017] Specifically, the fork pad 5 is matched with the small double ear groove 1-8 of the rocker arm 1, the spindle through hole 5-1 corresponds to the spindle through hole 4-3 of the guide pressure plate 4, and the knife receiving hole 5-2 corresponds to the positioning small guide hole 4-1 and the precision concentric hole 1-4.

[0018] Specifically, the cylindrical boss 2-10, small square boss 2-11, and large square boss 2-12 of the base 2 are matched with the rectangular frame 1-10, square frame 1-11, and triangular frame 1-12 of the rocker arm 1; the mounting positioning strip 2-13 of the base 2 is matched with the positioning groove of the machine tool worktable to realize the positioning of the base 2 on the machine tool worktable.

[0019] Specifically, the fastening screw 9 is matched with the fixing bolt hole 2-14 of the base 2, and the fastening screw 9 is matched with the nut in the T-slot of the machine tool worktable, so as to fix the base 2 on the machine tool worktable.

[0020] The beneficial effects of this application are as follows: Compared with the prior art, this application has a simple and practical structure, rapid positioning, and single-positioning clamping, enabling drilling and boring of multiple precision holes in a part, as well as drilling of two small holes. The entire machining system has a compact structure, high rigidity, and easily ensures the machining requirements of precision hole dimensions and geometric tolerances, while improving hole machining efficiency. Attached Figure Description

[0021] Figure 1 This application provides a schematic diagram of the structure of a rocker arm 1;

[0022] Figure 2 This application provides a schematic diagram of the symmetry plane of a rocker arm 1.

[0023] Figure 3 A schematic diagram of a tooling for drilling and boring multiple precision holes provided in this application;

[0024] Figure 4 This is a schematic diagram of the base 2 structure of this application;

[0025] Figure 5 This is a top view of the base 2 of this application;

[0026] Figure 6 This is a side view of the base of this application;

[0027] Figure 7 This is a schematic diagram of the stepped guide plate 3 structure of this application;

[0028] Figure 8 This is a schematic diagram of the guide plate 4 structure in this application;

[0029] Figure 9 This is a schematic diagram of the fork block 5 structure of this application;

[0030] Figure 10 This is a schematic diagram of the threaded mandrel 6 in this application;

[0031] Figure 11 This is a schematic diagram of the nut 7 structure in this application;

[0032] Figure 12 This is a schematic diagram of the structure of washer 8 in this application;

[0033] Figure 13 This is a schematic diagram of the fastening screw 9 in this application;

[0034] In the diagram: 1-rocker arm, 2-base, 3-stepped guide plate, 4-guide plate, 5-fork pad, 6-threaded mandrel, 7-nut, 8-washer, 9-fastening screw, 1-1-precision hole, 1-2-precision hole, 1-3-precision hole, 1-4-precision concentric hole, 1-5-small hole, 1-6-small hole, 1-7-positioning groove, 1-8-small double ear groove, 1-9-side ear outer end face, 1-10-rectangular frame, 1-11-square frame, 1-12-triangular frame, 1-13-large precision hole end face, 1-14-double ear side face, 1-15-small precision hole end face, 2-1-positioning boss, 2-2-ear positioning groove, 2-3-positioning guide boss, 2- 4-Positioning guide hole, 2-5-Side ear drilling guide hole, 2-6-Large chip groove, 2-7-Pad ear boss, 2-8-Mandrel hole, 2-9-Small chip groove, 2-10-Cylindrical boss, 2-11-Small square boss, 2-12-Large square boss, 2-13-Mounting positioning strip, 2-14-Fixing bolt hole, 3-1-Large pressure plate surface, 3-2-Mandrel through hole, 3-3-Positioning large guide hole, 3-4-Small pressure plate surface, 4-1-Positioning small guide hole, 4-2-Drilling guide hole, 4-3-Mandrel through hole, 4-4-Pressure plate surface, 5-1-Mandrel through hole, 5-2-Cutter hole, 5-3-Pad side, 6-1-Threaded shaft, 6-2-Positioning shaft. Detailed Implementation

[0035] The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples may be described, and these examples should not be construed as limited to those set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0036] See Figure 3 This application provides a tooling for drilling and boring multiple precision holes, including a base 2, a stepped guide plate 3, a guide plate 4, a fork pad 5, a threaded mandrel 6, a nut 7, a washer 8, and a fastening screw 9; wherein:

[0037] The rocker arm 1 is provided with precision holes 1-1, 1-2, 1-3, 1-4, 1-5, 1-6, 1-7, 1-8, 1-9, 1-10, 1-11, 1-12, 1-13, 1-14, 1-15, 1-15.

[0038] The base 2 is provided with a fork positioning boss 2-1, an ear positioning groove 2-2, a positioning guide boss 2-3, a positioning guide hole 2-4, a side ear drilling guide hole 2-5, a large chip groove 2-6, a pad ear boss 2-7, a spindle hole 2-8, a small chip groove 2-9, a cylindrical boss 2-10, a small square boss 2-11, a large square boss 2-12, a mounting positioning strip 2-13, and a fixing bolt hole 2-14.

[0039] The stepped guide plate 3 is provided with a large pressure plate surface 3-1, a spindle through hole 3-2, a large positioning guide hole 3-3, and a small pressure plate surface 3-4.

[0040] The guide plate 4 is provided with a positioning guide hole 4-1, a drilling guide hole 4-2, a mandrel through hole 4-3, and a pressure plate surface 4-4.

[0041] The fork pad 5 is provided with a spindle through hole 5-1, a knife receiving hole 5-2, and a side of the pad 5-3.

[0042] The threaded mandrel 6 is provided with a threaded shaft 6-1 and a positioning shaft 6-2.

[0043] Further, see Figure 1-13 The base 2 fork positioning boss 2-1 is matched with the rocker arm 1 positioning groove 1-7, and the positioning guide boss 2-3 is matched with the rocker arm 1 side ear outer end face 1-9, so as to realize the positioning of the rocker arm 1.

[0044] Furthermore, the base 2 pad lug 2-7 is matched with the lower end face of the rocker arm 1 precision hole 1-1;

[0045] Furthermore, the threaded mandrel 6 positioning shaft 6-2 is matched with the mandrel hole 2-8 of the base 2;

[0046] Furthermore, the threaded mandrel 6 positioning shaft 6-2 and the base 2 mandrel hole 2-8 are interference fit;

[0047] Furthermore, the guide hole 2-5 of the side ear of the base 2 corresponds to the small hole 1-5 of the rocker arm 1;

[0048] Furthermore, the large guide hole 3-3 of the stepped guide plate 3 corresponds to the precision hole 1-1 of the rocker arm 1, and the mandrel through hole 3-2 of the stepped guide plate 3 matches the positioning shaft 6-2 of the threaded mandrel 6.

[0049] Furthermore, the guide plate 4 positioning small guide hole 4-1 corresponds to the rocker arm 1 precision concentric hole 1-4, and the guide plate 4 spindle through hole 4-3 matches the threaded spindle 6 positioning shaft 6-2;

[0050] Furthermore, the stepped guide plate 3's large pressure plate surface 3-1 matches the rocker arm's high-precision hole end face 1-13;

[0051] Furthermore, the small pressure plate surface 3-4 of the stepped guide pressure plate 3 matches the double ear side surface 1-14 of the rocker arm 1;

[0052] Furthermore, the guide plate 4 pressure plate surface 4-4 is matched with the small precision hole end face 1-15 of the rocker arm 1;

[0053] Furthermore, the fork pad 5 is matched with the small double ear groove 1-8 of the rocker arm 1, the spindle through hole 5-1 corresponds to the spindle through hole 4-3 of the guide pressure plate 4, and the knife receiving hole 5-2 corresponds to the positioning small guide hole 4-1 and the precision concentric hole 1-4.

[0054] Furthermore, the guide plate 4 has a guide hole 4-2 that corresponds to the small hole 1-6 in the rocker arm 1;

[0055] Furthermore, the cylindrical boss 2-10, small square boss 2-11, and large square boss 2-12 of the base 2 are matched with the rectangular frame 1-10, square frame 1-11, and triangular frame 1-12 of the rocker arm 1.

[0056] Furthermore, the nut 7 and washer 8 are matched with the threaded mandrel 6 and threaded shaft 6-1 to achieve the guiding and positioning of the rocker arm 1 precision holes 1-1, precision holes 1-2, precision holes 1-3 and precision concentric holes 1-4 and to fix the rocker arm 1 on the base 2.

[0057] Furthermore, the base 2 is equipped with positioning strips 2-13 that match the positioning slots of the machine tool worktable, thereby enabling the base 2 to be positioned on the machine tool worktable.

[0058] Furthermore, the fastening screw 9 is matched with the fixing bolt hole 2-14 of the base 2, and the fastening screw 9 is matched with the nut in the T-slot of the machine tool worktable, so as to fix the base 2 on the machine tool worktable.

[0059] During machining, the rocker arm 1 is positioned and fixed on the base 2, and the base 2 is positioned and fixed on the machine tool worktable. The stepped guide plate 3 is aligned to position the large guide hole 3-3, enabling drilling and boring of the precision hole 1-1 of the rocker arm 1. The base 2 is aligned to position the guide hole 2-4, enabling drilling and boring of the precision holes 1-2 and 1-3 of the rocker arm 1. The side ear of the base 2 is aligned to drill the guide hole 2-5, enabling drilling of the small hole 1-5 of the rocker arm 1. The guide plate 4 is aligned to position the small guide hole 4-1, enabling drilling and boring of the precision concentric hole 1-4 of the rocker arm 1. The guide plate 4 is aligned to drill the guide hole 4-2, enabling drilling of the small hole 1-6 of the rocker arm 1.

[0060] In summary, this application relates to a tooling for drilling and boring multiple precision holes. The tooling for drilling and boring multiple precision holes and drilling two small holes on a rocker arm includes a base, a stepped guide plate, a guide plate, a fork pad, a threaded mandrel, a nut, a washer, and a fastening screw. The base is provided with a fork positioning boss, an ear positioning groove, a positioning guide boss, a positioning guide hole, a side ear drilling guide hole, a large chip groove, an ear pad boss, a mandrel hole, a small chip groove, a cylindrical boss, a small square boss, a large square boss, a mounting positioning strip, and a fixing bolt hole. The stepped guide plate is provided with a large pressure plate surface, a mandrel through hole, a large positioning guide hole, and a small pressure plate surface. The guide plate is provided with a small positioning guide hole, a drilling guide hole, a mandrel through hole, and a pressure plate surface. The fork pad is provided with a mandrel through hole, a tool receiving hole, and a pad side surface. The threaded mandrel is provided with a threaded shaft and a positioning shaft. Compared with existing technologies, this application features a simple and practical structure, rapid positioning, and single-positioning clamping, enabling drilling and boring of multiple precision holes in a part, as well as drilling of two small holes. The entire machining system has a compact structure, high rigidity, and easily ensures the machining requirements of precision hole dimensions and geometric tolerances, while also improving hole machining efficiency.

[0061] The various examples of systems, apparatuses, and methods disclosed herein include a wide range of components, features, and functions. It should be understood that the various examples of systems, apparatuses, and methods disclosed herein may include any of the components, features, and functions of any of the other examples of systems, apparatuses, and methods disclosed herein in any combination or sub-combination, and all such possibilities are intended to fall within the scope of this application.

[0062] Descriptions of various advantageous arrangements have been shown for illustrative and descriptive purposes, but such descriptions are not intended to be exclusive or limited to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. Furthermore, different advantageous examples may describe different advantages compared to other advantageous examples. One or more examples have been selected and described in order to best illustrate the principles and practical application of the examples, and to enable those skilled in the art to understand that this disclosure contains various examples with various modifications suitable for the particular intended use.

Claims

1. A tool for drilling and boring a plurality of precision holes, characterized by, Includes a base (2), a stepped guide plate (3), a guide plate (4), a fork pad (5), a threaded mandrel (6), a nut (7), a washer (8), and a fastening screw (9); wherein: The rocker arm (1) is provided with precision holes (1-1), precision holes (1-2), precision holes (1-3), precision concentric holes (1-4), small holes (1-5), small holes (1-6), positioning grooves (1-7), small double ear grooves (1-8), side ear outer end faces (1-9), rectangular frames (1-10), square frames (1-11), triangular frames (1-12), large precision hole end faces (1-13), double ear side faces (1-14), and small precision hole end faces (1-15); The base (2) is provided with a fork positioning boss (2-1), an ear positioning groove (2-2), a positioning guide boss (2-3), a positioning guide hole (2-4), a side ear drilling guide hole (2-5), a large chip groove (2-6), an ear pad boss (2-7), a spindle hole (2-8), a small chip groove (2-9), a cylindrical boss (2-10), a small square boss (2-11), a large square boss (2-12), a mounting positioning strip (2-13), and a fixing bolt hole (2-14); The stepped guide plate (3) is provided with a large pressure plate surface (3-1), a mandrel through hole (3-2), a positioning large guide hole (3-3), and a small pressure plate surface (3-4); The guide plate (4) is provided with a positioning guide hole (4-1), a drilling guide hole (4-2), a mandrel through hole (4-3), and a pressure plate surface (4-4); The fork pad (5) is provided with a spindle through hole (5-1), a knife receiving hole (5-2), and a side of the pad (5-3); The threaded mandrel (6) is provided with a threaded shaft (6-1) and a positioning shaft (6-2).

2. The jig according to claim 1, wherein The base (2) has a fork-shaped positioning boss (2-1) that matches the rocker arm (1) positioning groove (1-7), and the positioning guide boss (2-3) matches the outer end face (1-9) of the side ear of the rocker arm (1) to achieve the positioning of the rocker arm (1).

3. The jig according to claim 1, wherein The base (2) has a padding lug (2-7) that matches the lower end face of the precision hole (1-1) of the rocker arm (1).

4. The jig according to claim 1, wherein The threaded mandrel (6) positioning shaft (6-2) is matched with the mandrel hole (2-8) of the base (2); the threaded mandrel (6) positioning shaft (6-2) and the mandrel hole (2-8) of the base (2) are interference fit.

5. The jig according to claim 1, wherein The guide hole (2-5) of the side ear of the base (2) corresponds to the small hole (1-5) of the rocker arm (1).

6. The tooling for drilling and boring multiple precision holes according to claim 1, characterized in that, The stepped guide plate (3) has a large guide hole (3-3) that corresponds to the precision hole (1-1) of the rocker arm (1), and the mandrel through hole (3-2) of the stepped guide plate (3) matches the positioning shaft (6-2) of the threaded mandrel (6); the large pressure plate surface (3-1) of the stepped guide plate (3) matches the end face (1-13) of the large precision hole of the rocker arm; and the small pressure plate surface (3-4) of the stepped guide plate (3) matches the side surface (1-14) of the double ears of the rocker arm (1).

7. The tooling for drilling and boring multiple precision holes according to claim 1, characterized in that, The guide plate (4) positioning small guide hole (4-1) corresponds to the precision concentric hole (1-4) of the rocker arm (1), the guide plate (4) spindle through hole (4-3) matches the positioning shaft (6-2) of the threaded spindle (6); the guide plate (4) pressure plate surface (4-4) matches the small precision hole end face (1-15) of the rocker arm (1); the guide plate (4) drilling guide hole (4-2) corresponds to the small hole (1-6) of the rocker arm (1).

8. The tooling for drilling and boring multiple precision holes according to claim 1, characterized in that, The fork pad (5) is matched with the small double ear groove (1-8) of the rocker arm (1), the spindle through hole (5-1) corresponds to the spindle through hole (4-3) of the guide pressure plate (4), and the knife receiving hole (5-2) corresponds to the positioning small guide hole (4-1) and the precision concentric hole (1-4).

9. The tooling for drilling and boring multiple precision holes according to claim 1, characterized in that, The cylindrical boss (2-10), small square boss (2-11), and large square boss (2-12) of the base (2) are matched with the rectangular frame (1-10), square frame (1-11), and triangular frame (1-12) of the rocker arm (1); the positioning strip (2-13) of the base (2) is matched with the positioning groove of the machine tool worktable to realize the positioning of the base (2) on the machine tool worktable.

10. The tooling for drilling and boring multiple precision holes according to claim 1, characterized in that, The fastening screw (9) is matched with the fixing bolt hole (2-14) of the base (2), and the fastening screw (9) is matched with the nut in the T-slot of the machine tool table, so as to fix the base (2) on the machine tool table.

Images