Tool for drilling and boring multiple precision holes

Abstract

The invention provides a tool for drilling and boring multiple precision holes. The tool comprises a base 2, a stepped guide pressing plate 3, a guide pressing plate 4, a fork entry cushion block 5, a threaded mandrel 6, a nut 7, a gasket 8 and a fastening screw 9. The rocker arm 1 is provided with a precision hole 1-1, a precision hole 1-2, a precision hole 1-3, a precision concentric hole 1-4, a small hole 1-5, a small hole 1-6, a positioning groove 1-7, a small double-lug groove 1-8 and the like. The base 2 is provided with a fork opening positioning boss 2-1, a lug piece positioning groove 2-2, a positioning guide boss 2-3, a positioning guide hole 2-4, a side lug drilling guide hole 2-5, a large chip containing groove 2-6, a lug padding boss 2-7 and the like. The stepped guide pressing plate 3 is provided with a large pressing plate surface 3-1, a mandrel 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 small positioning guide hole 4-1, a drilling guide hole 4-2, a mandrel through hole 4-3 and a pressing plate surface 4-4; the fork entry cushion block 5 is provided with a mandrel through hole 5-1, a cutter accommodating hole 5-2 and a cushion block side surface 5-3; the threaded mandrel 6 is provided with a threaded shaft 6-1 and a positioning shaft 6-2.

Description

Technical Field

[0001] The present application relates to the technical field of drilling and boring processing of multiple precision holes of helicopter parts, and in particular to a tooling for drilling and boring processing of multiple precision holes. Background Art

[0002] The prior art often involves drilling and boring processing of multiple precision holes on a rocker arm. This rocker arm has a complex shape, and is provided with multiple precision holes and multiple small holes to be processed at both ends of the rocker arm. When boring multiple precision holes and drilling small holes, the prior art generally adopts marking and assembling combined fixtures for processing. This processing method requires multiple clamping, and the concentricity of the part hole is difficult to ensure. The angle deviation of the concentric hole axis is prone to occur. In addition, marking and assembling the fixture takes a long time and has low processing efficiency. Summary of the invention

[0003] The purpose of the present application is to provide a tool for drilling and boring multiple precision holes to solve 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 pressure plate 3, a guide pressure plate 4, a fork pad 5, a threaded spindle 6, a nut 7, a washer 8, and a fastening screw 9; wherein:

[0005] The rocker arm 1 is respectively provided with a precision hole 1-1, a precision hole 1-2, a precision hole 1-3, a precision concentric hole 1-4, a small hole 1-5, a small hole 1-6, a positioning groove 1-7, a small double-ear groove 1-8, a side ear outer end face 1-9, a rectangular frame 1-10, a square frame 1-11, a triangular frame 1-12, a large precision hole end face 1-13, a double-ear side face 1-14, and a small precision hole end face 1-15;

[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 step guide pressure 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;

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

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

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

[0011] Specifically, the fork positioning boss 2-1 of the base 2 matches the positioning groove 1-7 of the rocker arm 1, and the positioning guide boss 2-3 matches the outer end surface 1-9 of the side ear of the rocker arm 1, so as to realize the positioning of the rocker arm 1 as a component.

[0012] Specifically, the ear boss 2 - 7 of the base 2 matches the lower end surface of the precision hole 1 - 1 of the rocker arm 1 .

[0013] Specifically, the positioning shaft 6-2 of the threaded spindle 6 matches the spindle hole 2-8 of the base 2; the positioning shaft 6-2 of the threaded spindle 6 and the spindle hole 2-8 of the base 2 are interference fit.

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

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

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

[0017] Specifically, the fork pad 5 matches 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 tool hole 5-2 corresponds to the small positioning 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 match 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 matches the positioning groove of the machine tool workbench to realize the positioning of the base 2 on the machine tool workbench.

[0019] Specifically, the fastening screw 9 matches the fixing bolt hole 2-14 of the base 2, and the fastening screw 9 matches the nut in the T-slot of the machine tool workbench, so that the base 2 is fixed on the machine tool workbench.

[0020] Beneficial effects of the present application: Compared with the prior art, the present application has a simple and practical structure, fast positioning, one-time positioning and clamping, and can realize the drilling and boring of multiple precision holes of parts, as well as the drilling of two small holes. The entire processing system has a compact structure and strong rigidity, which can easily ensure the processing requirements of precision hole size and form and position tolerance, while improving the processing efficiency of holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a rocker arm 1 provided in this application;

[0022] Figure 2 A schematic diagram of the structure of a symmetric surface of a rocker arm 1 provided in this application;

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

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

[0025] Figure 5 A top view of the base 2 of the present application;

[0026] Figure 6 A side view of the base 2 of the present application;

[0027] Figure 7 This is a schematic diagram of the structure of the step guide pressure plate 3 of the present application;

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

[0029] Fig. 9 This is a schematic diagram of the structure of the fork pad 5 of the present application;

[0030] Fig.10 This is a schematic diagram of the structure of the threaded spindle 6 of the present application;

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

[0032] Fig.12 This is a schematic diagram of the structure of the gasket 8 of the present application;

[0033] Fig.13 This is a schematic diagram of the structure of the fastening screw 9 of the present application;

[0034] In the figure: 1-rocker arm, 2-base, 3-step guide pressure plate, 4-guide pressure plate, 5-fork pad, 6-threaded spindle, 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-rectangle frame, 1-11-square frame, 1-12-triangle frame, 1-13-large precision hole end face, 1-14-double ear side, 1-15-small precision hole end face, 2-1-positioning boss, 2-2-ear piece 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-spindle hole, 2-9-small chip groove, 2-10-cylindrical boss, 2-11-small square boss, 2-12-large square boss, 2-13-installation positioning strip, 2-14-fixing bolt hole, 3-1-large pressure plate surface, 3-2-spindle through hole, 3-3-large positioning guide hole, 3-4-small pressure plate surface, 4-1-small positioning guide hole, 4-2-drilling guide hole, 4-3-spindle through hole, 4-4-pressure plate surface, 5-1-spindle through hole, 5-2-tool hole, 5-3-pad side, 6-1-threaded shaft, 6-2-positioning shaft. DETAILED DESCRIPTION

[0035] The disclosed examples will be more fully described 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 the examples set forth herein. Instead, these examples are described so that this disclosure will be thorough and complete and will fully convey the scope of the disclosure to those skilled in the art.

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

[0037] The rocker arm 1 is respectively provided with a precision hole 1-1, a precision hole 1-2, a precision hole 1-3, a precision concentric hole 1-4, a small hole 1-5, a small hole 1-6, a positioning groove 1-7, a small double-ear groove 1-8, a side ear outer end face 1-9, a rectangular frame 1-10, a square frame 1-11, a triangular frame 1-12, a large precision hole end face 1-13, a double-ear side face 1-14, and a small precision hole end face 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, an installation positioning strip 2-13, and a fixing bolt hole 2-14.

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

[0041] The fork cushion block 5 is provided with a spindle through hole 5-1, a knife receiving hole 5-2, and a cushion block side surface 5-3.

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

[0043] For further information, see Figure 1-13 The fork positioning boss 2-1 of the base 2 matches the positioning groove 1-7 of the rocker arm 1, and the positioning guide boss 2-3 matches the outer end surface 1-9 of the side ear of the rocker arm 1, so as to realize the positioning of the rocker arm 1;

[0044] Furthermore, the ear boss 2-7 of the base 2 matches the lower end surface of the precision hole 1-1 of the rocker arm 1;

[0045] Further, the positioning shaft 6-2 of the threaded spindle 6 matches the spindle hole 2-8 of the base 2;

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

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

[0048] Furthermore, the large positioning guide hole 3-3 of the step guide pressure plate 3 corresponds to the precision hole 1-1 of the rocker arm 1, and the spindle through hole 3-2 of the step guide pressure plate 3 matches the positioning shaft 6-2 of the threaded spindle 6;

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

[0050] Furthermore, the large pressure plate surface 3-1 of the step guide pressure plate 3 matches the large precision hole end surface 1-13 of the rocker arm;

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

[0052] Furthermore, the guide pressure plate 4 pressure plate surface 4-4 matches the rocker arm 1 small precision hole end surface 1-15;

[0053] Furthermore, the fork pad 5 matches 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 hole 5-2 corresponds to the positioning small guide hole 4-1 and the precision concentric hole 1-4;

[0054] Further, the guide hole 4-2 drilled in the guide pressure plate 4 corresponds to the small hole 1-6 of the rocker arm 1;

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

[0056] Furthermore, the nut 7 and the washer 8 match the threaded shaft 6-1 of the threaded spindle 6 to achieve the guiding positioning of the precision hole 1-1, the precision hole 1-2, the precision hole 1-3, and the precision concentric hole 1-4 of the rocker arm 1 and the fixing of the rocker arm 1 on the base 2;

[0057] Furthermore, the base 2 is installed with the positioning strip 2-13 matching the positioning groove of the machine tool workbench to realize the positioning of the base 2 on the machine tool workbench;

[0058] Furthermore, the fastening screw 9 matches the fixing bolt hole 2-14 of the base 2, and the fastening screw 9 matches the nut in the T-slot of the machine tool workbench, so that the base 2 is fixed on the machine tool workbench.

[0059] During processing, the rocker arm 1 is positioned, installed and fixed on the base 2, and the base 2 is positioned and fixed on the machine tool workbench, the stepped guide pressure plate 3 is aligned to position the large guide hole 3-3, so as to realize the drilling and boring processing of the precision hole 1-1 of the rocker arm 1; the base 2 is aligned to position the guide hole 2-4, so as to realize the drilling and boring processing of the precision holes 1-2 and the precision holes 1-3 of the rocker arm 1; the side ears of the base 2 are aligned to drill the guide holes 2-5, so as to realize the drilling processing of the small holes 1-5 of the rocker arm 1; the guide pressure plate 4 is aligned to position the small guide hole 4-1, so as to realize the drilling and boring processing of the precision concentric hole 1-4 of the rocker arm 1; the guide pressure plate 4 is aligned to drill the guide hole 4-2, so as to realize the drilling processing of the small hole 1-6 of the rocker arm 1.

[0060] In summary, the present application relates to a tooling for drilling and boring multiple precision holes. The tooling for drilling and boring multiple precision holes on the rocker arm and drilling two small holes includes a base, a stepped guide pressure plate, a guide pressure plate, a fork pad, a threaded spindle, 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, a pad ear boss, a spindle hole, a small chip groove, a cylindrical boss, a small square boss, a large square boss, an installation positioning strip, and a fixing bolt hole; the stepped guide pressure plate is provided with a large pressure plate surface, a spindle through hole, a large positioning guide hole, and a small pressure plate surface; the guide pressure plate is provided with a small positioning guide hole, a drilling guide hole, a spindle through hole, and a pressure plate surface; the fork pad is provided with a spindle through hole, a tool hole, and a pad side; the threaded spindle is provided with a threaded shaft and a positioning shaft. Compared with the prior art, the present invention has a simple and practical structure, fast positioning, one-time positioning and clamping, and can realize the drilling and boring of multiple precision holes of parts, as well as the drilling of two small holes. The entire processing system has a compact structure and strong rigidity, which can easily ensure the processing requirements of precision hole size and geometric tolerance, while improving the processing efficiency of holes.

[0061] Different examples of the systems, devices, and methods disclosed herein include various components, features, and functions. It should be understood that the various examples of the systems, devices, and methods disclosed herein may include any of the components, features, and functions of any of the other examples of the systems, devices, and methods disclosed herein in any combination or any sub-combination, and all of these possibilities are intended to fall within the scope of the present application.

[0062] The description of different advantageous arrangements has been presented for purposes of illustration and description, but the description is not intended to be exclusive or limited to examples of the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. Additionally, different advantageous examples may describe different advantages over other advantageous examples. The selected example or examples are chosen and described in order to best illustrate the principles of the examples, the practical application, and to enable those of ordinary skill in the art to understand the disclosure with various examples with various modifications suitable for the particular use contemplated.

Claims

1. A tool for drilling and boring multiple precision holes, characterized in that: It comprises a base (2), a stepped guide pressure plate (3), a guide pressure plate (4), a fork pad (5), a threaded spindle (6), a nut (7), a washer (8), and a fastening screw (9); wherein: The rocker arm (1) is respectively provided with a precision hole (1-1), a precision hole (1-2), a precision hole (1-3), a precision concentric hole (1-4), a small hole (1-5), a small hole (1-6), a positioning groove (1-7), a small double-ear groove (1-8), a side ear outer end face (1-9), a rectangular frame (1-10), a square frame (1-11), a triangular frame (1-12), a large precision hole end face (1-13), a double-ear side face (1-14), and a small precision hole end face (1-15); The base (2) is provided with a fork positioning boss (2-1), an ear piece 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); The stepped guide pressure 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); The guide pressure plate (4) is provided with a small positioning guide hole (4-1), a drilling guide hole (4-2), a spindle through hole (4-3), and a pressure plate surface (4-4); The fork mouth cushion block (5) is provided with a spindle through hole (5-1), a knife receiving hole (5-2), and a cushion block side surface (5-3); The threaded spindle (6) is provided with a threaded shaft (6-1) and a positioning shaft (6-2).

2. The tooling for drilling and boring multiple precision holes according to claim 1, characterized in that: The fork positioning boss (2-1) of the base (2) matches the positioning groove (1-7) of the rocker arm (1), and the positioning guide boss (2-3) matches the outer end surface (1-9) of the side ear of the rocker arm (1), thereby realizing the positioning of the rocker arm (1).

3. The tooling for drilling and boring multiple precision holes according to claim 1, characterized in that: The ear pad boss (2-7) of the base (2) matches the lower end surface of the precision hole (1-1) of the rocker arm (1).

4. The tooling for drilling and boring multiple precision holes according to claim 1, characterized in that: The threaded spindle (6) positioning shaft (6-2) matches the spindle hole (2-8) of the base (2); the threaded spindle (6) positioning shaft (6-2) and the spindle hole (2-8) of the base (2) are interference fit.

5. The tooling for drilling and boring multiple precision holes according to claim 1, characterized in that: The side ear drilling guide hole (2-5) 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 large positioning guide hole (3-3) of the step guide pressure plate (3) corresponds to the precision hole (1-1) of the rocker arm (1); the spindle through hole (3-2) of the step guide pressure plate (3) matches the positioning shaft (6-2) of the threaded spindle (6); the large pressure plate surface (3-1) of the step guide pressure plate (3) matches the end surface (1-13) of the large precision hole of the rocker arm; the small pressure plate surface (3-4) of the step guide pressure plate (3) matches the double ear side surface (1-14) of the rocker arm (1).

7. The tooling for drilling and boring multiple precision holes according to claim 1, characterized in that: The small positioning guide hole (4-1) of the guide pressure plate (4) corresponds to the precision concentric hole (1-4) of the rocker arm (1); the spindle through hole (4-3) of the guide pressure plate (4) matches the positioning shaft (6-2) of the threaded spindle (6); the pressure plate surface (4-4) of the guide pressure plate (4) matches the small precision hole end surface (1-15) of the rocker arm (1); the drilling guide hole (4-2) of the guide pressure plate (4) 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) matches 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 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), the small square boss (2-11), and the large square boss (2-12) of the base (2) match the rectangular frame (1-10), the square frame (1-11), and the triangular frame (1-12) of the rocker arm (1); the mounting positioning strip (2-13) of the base (2) matches the positioning groove of the machine tool workbench, so that the base (2) is positioned on the machine tool workbench.

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

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