Hole site machining device for inverted-cone-shaped groove-shaped part and using method of hole site machining device

Abstract

The invention provides an inverted-cone-shaped groove type part hole site machining tool and a using method, and belongs to the field of machine manufacturing and machining. The machining tool comprises a guide hole vertical drill bushing, a fixed support, a rocking support arm, a fastening polish rod bolt positioning pin, a fastening bolt, a positioning fastener, a dovetail groove sliding rail, a positioning side plate, an outer contour side plate, a transmission rod, an auxiliary transmission rod, a graduated scale I and a graduated scale II. The tool is novel in structure and high in matching precision, can be suitable for determining and machining the inner hole position of the inverted-cone-shaped groove opening in various narrow operation spaces, and solves the difficult problems that line drawing of the inverted-cone-shaped groove piece is not accurate, and the hole position cannot be correctly determined.

Description

Technical Field

[0001] The invention belongs to the field of mechanical manufacturing and processing, and relates to a device for processing a hole position of an inverted tapered slot-shaped part and a use method thereof. Background Art

[0002] During the aircraft assembly process, most of the wall panels at the joints of the wings and tail are designed with inverted tapered notches. This design has high strength and good fatigue resistance, but such notches exist in large numbers at the wings and tails of aircraft, and since the sizes of various structures or joints are different, it is impossible to make a fixed pattern template or module for each notch. In addition, during the processing, the hole position in the groove cannot be accurately determined, so it takes a long time to repeatedly verify and confirm, which not only prolongs the work cycle, but also greatly increases the difficulty of work, and is prone to cause out-of-tolerance or even scrap due to inaccurate drawing. At present, the conventional method of drawing lines and determining hole positions is to draw lines by using a special-shaped steel ruler in combination with a gauge block, that is, a gauge block of appropriate thickness (selected according to the size of the slot) is placed in the inverted conical slot and close to the end face of the slot wall on one side, and then a special-shaped steel ruler is used to measure and draw lines close to the end face of the gauge block. This measurement method is not only extremely inefficient, but also requires a very high level of technical skills and experience from the operator, mainly because workers cannot meet the problem of shaking and vision being blocked by their hands when holding the special-shaped steel ruler and the gauge block. The wings and tail are parts with extremely high structural size requirements. Since the position of each hole is irregularly distributed in these inverted conical slots, each measurement needs to be repeatedly checked before drilling. Moreover, for the hole positions located by drawn lines, when the drill bit does not have an auxiliary guide sleeve, it is easy to appear in the process of hole making that the center position is not drilled accurately and the hole position deviation occurs. After the deviation occurs, if the deviation range is small and within the adjustable range, it is necessary to readjust the correct hole position by means of borrowing holes. The borrowing hole work is large in workload, complicated and highly dangerous. If you are not careful, it will cause oblong holes, figure-eight holes, etc., resulting in out-of-tolerance and scrap. Moreover, if the deviation range exceeds the expected size (usually the final hole diameter is used to consider whether the deviation is within the borrowable hole range), it will directly cause out-of-tolerance and scrap. Replacing the wing and tail skins or wall panels and frames will generate more quality risks and uncertainties.

[0003] In view of the above reasons, the inverted cone groove part hole position processing tooling was invented. The tooling has a novel structure, high matching precision, and is flexible and convenient to use. It can be adapted to the determination and processing of hole positions of inverted cone groove parts in various narrow operating spaces, and solves the difficult problems of inaccurate line drawing of inverted cone groove parts, inability to correctly determine hole positions, and easy deviation from the center of drilling. Moreover, it has high work efficiency, simple and easy operation, and the processing precision meets the requirements of technical conditions. Summary of the invention

[0004] The purpose of the present invention is to invent a tool for processing the hole position of an inverted cone groove-shaped part, which can adapt to a small and special working space, is easy and flexible to use, and can complete the determination and positioning of the hole position in the inverted cone groove on an aircraft at one time, strictly ensuring the accuracy and verticality requirements of the hole position in the groove.

[0005] The technical solution of the present invention is as follows:

[0006] The method of using the inverted tapered groove part hole processing device is as follows:

[0007] Step 1: According to the φ2.7mm guide hole vertical drill sleeve guide hole diameter of the inverted tapered groove part hole processing device, select a drill bit of appropriate length and clamp it on the drill chuck of the air drill. After tightening, connect the air source for use when making holes.

[0008] Step 2: Place the processing device into the inverted cone groove part, make the outer side plate in the inverted cone groove, tighten the fixing bolts to clamp the processing device and the side wall of the inverted cone groove part with the positioning side plate and the positioning fasteners, fix the main body of the processing device frame in the groove, check the stability and stability of the tooling, if it meets the requirements, prepare to adjust the hole position.

[0009] Step 3: Loosen the positioning pin of the bolt that tightens the polished rod, and adjust the fixed support along the dovetail groove slide rail so that it Figure 1 The middle positioning side plate moves horizontally and parallelly, and the position of the center of the guide hole vertical drill sleeve hole in this direction is determined according to the scale ruler Ⅰ, and the positioning pin of the polished rod bolt is tightened to ensure that the positioning position is accurate, stable and reliable.

[0010] Step 4: Shake the swing arm to make the transmission rod and auxiliary transmission rod move forward and backward smoothly, and determine the vertical position of the center of the φ2.7mm guide hole vertical drill sleeve in this direction according to the scale ruler Ⅱ.

[0011] Step 5: Use a pre-clamped drill bit of appropriate length to drill a hole in the φ2.7mm guide hole vertical drill sleeve after the hole position is determined, and the hole position determination and hole making work in the groove of the inverted tapered groove part can be completed.

[0012] The hole processing device for the inverted tapered groove-shaped parts includes a φ2.7mm guide hole vertical drill sleeve, a fixed support, a dovetail groove slide rail, a positioning side plate, an outer side plate, a transmission rod, an auxiliary transmission rod, a scale ruler I, and a scale ruler II;

[0013] The φ2.7mm guide hole vertical drill sleeve is made of steel material, and is used to determine the hole position and then drill the hole based on the φ2.7mm guide hole of the vertical drill sleeve; the fixed support and the dovetail groove slide rail, positioning side plate, and outer side plate are a stable steel connecting structure frame, which is used to enable the φ2.7mm guide hole vertical drill sleeve to move left and right and stabilize the overall structure; the transmission rod, auxiliary transmission rod, scale ruler I, and scale ruler II are all made of steel materials, and the shaking arm is made of hard plastic. By rotating the shaking arm, the φ2.7mm guide hole vertical drill sleeve can be moved forward and backward, and can be used in conjunction with the fastening rod bolt locating pin to accurately determine the center position of the guide hole vertical drill sleeve; the positioning fastener is made of steel material, and the fastening bolt is used to ensure the accuracy and stability of the overall structure in the fixed position of the inverted cone groove part.

[0014] Beneficial effects of the present invention:

[0015] 1. The patented structure of this invention is novel and precise. It can adapt to small and special working spaces. It is convenient and flexible to use. It can complete the determination and positioning of the hole position in the inverted cone groove on the aircraft at one time, strictly ensuring the accuracy and verticality requirements of the position of the hole in the groove. It solves the problem that the line drawing accuracy of some inverted cone notches on aircraft cannot meet the technical requirements for a long time.

[0016] 2. Since the tooling adopts a structure combining a dovetail groove slide rail and a polished rod positioning bolt, the matching accuracy between the tooling is greatly improved, making the parallel movement process more stable and reliable.

[0017] 3. Another highlight of the tooling is the way the drive shaft is combined with the auxiliary drive shaft. The principle is simple and the utilization rate is high, making the tooling operation more flexible and convenient.

[0018] 4. The φ2.7mm guide hole vertical drill sleeve used in this tooling can not only determine the correct hole position, but also ensure the verticality of the inner hole of the inverted cone groove, solving the old operation mode of one person making holes and one person observing, shortening the work cycle, improving product quality, and saving personnel allocation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the present invention;

[0020] Figure 2 is a cross-sectional view of the present invention;

[0021] Figure 3 It is a top view of the present invention.

[0022] In the figure: 1: φ2.7mm guide hole vertical drill sleeve; 2: fixed support; 3: swing support arm; 4: fastening rod bolt positioning pin; 5: fastening bolt; 6: positioning fastener; 7: dovetail groove slide rail; 8: positioning side plate; 9: outer side plate; 10: transmission rod; 11: auxiliary transmission rod; 12: scale ruler I; 13: scale ruler II. DETAILED DESCRIPTION

[0023] The φ2.7mm guide hole vertical drill sleeve 1 is made of steel material, and is used to determine the hole position and then drill holes based on the φ2.7mm guide hole of the vertical drill sleeve; the fixed support 2 and the dovetail groove slide rail 7, the positioning side plate 8, and the outer side plate 9 are a stable steel connection structure frame, which is used to enable the φ2.7mm guide hole vertical drill sleeve 1 to move left and right and stabilize the overall structure; the transmission rod 10, the auxiliary transmission rod 11, the scale ruler II 12, and the scale ruler II 13 are all made of steel materials, and the shaking arm 3 is made of hard plastic. By rotating the shaking arm 3, the φ2.7mm guide hole vertical drill sleeve 1 can be moved forward and backward, and can be used in conjunction with the fastening rod bolt locating pin 4 to accurately determine the center position of the guide hole vertical drill sleeve; the positioning fastener 6 is made of steel material, and the fastening bolt 5 is used to ensure the accuracy and stability of the overall structure in the fixed position of the inverted cone groove part.

[0024] When making holes in inverted tapered groove parts, follow these steps:

[0025] 1) According to the diameter of the φ2.7mm pilot hole vertical drill sleeve, select a drill bit of appropriate length and clamp it on the drill chuck of the air drill. After tightening, connect the air source for use when drilling holes.

[0026] 2) Place the processing device into the inverted conical groove part, make the outer side plate 9 in the inverted conical groove, tighten the fastening bolts 5 to clamp the positioning side plate 8 and the positioning fasteners 6 to the side wall of the inverted conical groove part, and fix the main frame of the processing device in the groove. Check the stability and stability of the tooling. If it meets the requirements, prepare to adjust the hole position.

[0027] 3) Loosen the positioning pin 4 of the bolt that fastens the polished rod, and adjust the fixed support 2 along the dovetail groove slide rail 7 so that it moves along the Figure 1 The middle positioning side plate 8 moves horizontally and parallelly, and the position of the center of the guide hole vertical drill sleeve 1 in this direction is determined according to the scale ruler Ⅰ12, and the positioning pin 4 of the polished rod bolt is tightened to ensure that the positioning position is accurate, stable and reliable.

[0028] 4) Shake the swing arm 3 to make the transmission rod 10 and the auxiliary transmission rod 11 move forward and backward smoothly, and determine the vertical position of the center of the φ2.7mm guide hole vertical drill sleeve 1 in this direction according to the scale ruler II13.

[0029] 5) Use a pre-clamped drill bit of appropriate length to drill a hole in the φ2.7mm guide hole vertical drill sleeve after the hole position is determined, and the hole position determination and hole making work in the groove of the inverted tapered groove part can be completed.

Claims

1. A method for using a device for processing a hole of an inverted tapered grooved part, characterized in that: Here are the steps: Step 1: According to the guide hole diameter of the φ2.7 mm guide hole vertical drill sleeve (1) of the inverted tapered grooved part hole processing device, select a drill bit of corresponding length and clamp it on the drill chuck of the air drill, tighten it and connect the air source for use in hole making; Step 2: Place the inverted conical groove-shaped part hole processing device into the inverted conical groove-shaped part, so that the outer side plate (9) is in the inverted conical groove, and tighten the fastening bolts (5) to clamp the positioning side plate (8) and the positioning fastener (6) to the side wall of the inverted conical groove-shaped part, so that the main body of the processing device frame is fixed in the groove, and check the stability and stability of the tooling. If it meets the requirements, prepare to adjust the hole position; Step 3: Loosen and tighten the positioning pin (4) of the polished rod bolt, adjust the fixed support (2) along the dovetail groove slide rail (7), and make the positioning side plate (8) move horizontally and parallelly. According to the scale ruler I (12), determine the position of the center of the guide hole vertical drill sleeve (1) in this direction, tighten and tighten the positioning pin (4) of the polished rod bolt, and ensure that the positioning position is accurate, stable and reliable. Step 4: Shake the swing arm (3) to make the transmission rod (10) and the auxiliary transmission rod (11) move forward and backward smoothly, and determine the vertical position of the center of the φ2.7mm guide hole vertical drill sleeve (1) in this direction according to the scale ruler II (13); Step 5: Use a pre-clamped drill bit of appropriate length to drill a hole in the φ2.7mm guide hole vertical drill sleeve after the hole position is determined, and the hole position determination and hole making work in the groove of the inverted tapered groove part can be completed.

2. The method for using the inverted tapered grooved part hole processing device according to claim 1, characterized in that: The inverted tapered groove-shaped component hole processing device comprises a φ2.7 mm guide hole vertical drill sleeve (1), a fixed support (2), a dovetail groove slide rail (7), a positioning side plate (8), an outer side plate (9), a transmission rod (10), an auxiliary transmission rod (11), a scale ruler I (12), and a scale ruler II (13).

3. The method for using the inverted tapered grooved part hole processing device according to claim 1 or 2, characterized in that: The φ2.7 mm guide hole vertical drill sleeve (1) of the inverted tapered grooved part hole position processing device is made of steel material and is used to determine the hole position and then drill the hole based on the φ2.7 mm guide hole of the vertical drill sleeve.

4. The method for using the inverted tapered grooved part hole processing device according to claim 1 or 2, characterized in that: The fixed support (2) of the inverted tapered groove-shaped part hole processing device, the dovetail groove slide rail (7), the positioning side plate (8), and the outer side plate (9) are a connecting structural frame made of steel material, which is used to enable the φ2.7mm guide hole vertical drill sleeve (1) to move in the left and right directions and stabilize the overall structure.

5. The method for using the inverted tapered grooved part hole processing device according to claim 3, characterized in that: The fixed support (2) of the inverted tapered groove-shaped part hole processing device, the dovetail groove slide rail (7), the positioning side plate (8), and the outer side plate (9) are a connecting structural frame made of steel material, which is used to enable the φ2.7mm guide hole vertical drill sleeve (1) to move in the left and right directions and stabilize the overall structure.

6. The method for using the inverted tapered grooved part hole processing device according to claim 1, 2 or 5, characterized in that: The transmission rod (10), auxiliary transmission rod (11), scale ruler I (12), and scale ruler II (13) are all made of steel, and the shaking arm (3) is made of hard plastic. The φ2.7mm guide hole vertical drill sleeve (1) can be moved forward and backward by rotating the shaking arm (3), and can be used in conjunction with the positioning pin (4) for tightening the light rod bolt to accurately determine the center position of the guide hole vertical drill sleeve; the positioning fastener (6) is made of steel, and the tightening bolt (5) is used to ensure that the overall structure is accurate and stable in the fixed position of the inverted cone groove part.

7. The method for using the inverted tapered grooved part hole processing device according to claim 3, characterized in that: The transmission rod (10), auxiliary transmission rod (11), scale ruler I (12), and scale ruler II (13) are all made of steel, and the shaking arm (3) is made of hard plastic. The φ2.7mm guide hole vertical drill sleeve (1) can be moved forward and backward by rotating the shaking arm (3), and can be used in conjunction with the positioning pin (4) for tightening the light rod bolt to accurately determine the center position of the guide hole vertical drill sleeve; the positioning fastener (6) is made of steel, and the tightening bolt (5) is used to ensure that the overall structure is accurate and stable in the fixed position of the inverted cone groove part.

8. The method for using the inverted tapered grooved part hole processing device according to claim 4, characterized in that: The transmission rod (10), auxiliary transmission rod (11), scale ruler I (12), and scale ruler II (13) are all made of steel, and the shaking arm (3) is made of hard plastic. The φ2.7mm guide hole vertical drill sleeve (1) can be moved forward and backward by rotating the shaking arm (3), and can be used in conjunction with the positioning pin (4) for tightening the light rod bolt to accurately determine the center position of the guide hole vertical drill sleeve; the positioning fastener (6) is made of steel, and the tightening bolt (5) is used to ensure that the overall structure is accurate and stable in the fixed position of the inverted cone groove part.

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