A drilling device for machining aerospace parts

Abstract

The present invention relates to a drilling device for processing aerospace parts applied in the field of drilling processing, comprising a base, a vertical seat is fixedly connected to the top of the base, a machine head is installed at one end of the vertical seat, a drill bit is installed at the output end of the machine head, a detection frame is fixedly connected to the top of the base, the detection frame is located on the inner side of the vertical seat, a carrier plate is fixedly connected to the top of the detection frame, a plurality of clamps are fixedly connected to the top of the carrier plate, parts are clamped between the plurality of clamps, a mounting plate is slidably connected to the inner wall of the detection frame, a movable hole and a lower knife hole are respectively provided in the middle of the mounting plate and the middle of the carrier plate, a position matching cylinder is provided in the middle of the movable hole, the center point of the lower knife hole and the center point of the movable hole are on the same vertical line, and the above arrangement can detect whether the drill bit is offset during the process of drilling the parts, thereby greatly improving the yield rate of the parts and avoiding the problem of the entire part being scrapped due to the offset of a single hole.

Description

Technical Field

[0001] The invention relates to a drilling device for processing, in particular to a drilling device for processing aerospace parts applied in the field of drilling processing. Background Art

[0002] The processing and drilling of aviation parts is a highly precise job. Drilling machines are used for single drilling tasks and are often equipped with high-precision fixtures. The Chinese patent with publication number: CN222001933U discloses a blade drilling device for aviation parts. When in use, the aviation parts are placed on a fixed clamping mechanism, and then the drilling mechanism moves downward to drill holes in the aviation parts.

[0003] The drilling mechanism may cause the drilling position to shift during the frequent up and down movements, and the detection of the holes is often evaluated after the drilling is completed, and cannot be performed during the drilling process. If the hole shift is detected after the drilling is completed, the entire part will be scrapped, resulting in waste of parts. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the drilling position may be offset during the frequent up and down movement of the drilling mechanism, and the detection of the holes is often evaluated after the drilling is completed, and cannot be performed during the drilling process.

[0005] In order to solve the above problems, the present invention provides a drilling device for aerospace parts processing, comprising a base, a vertical seat is fixedly connected to the top of the base, a machine head is installed at one end of the vertical seat, a drill bit is installed at the output end of the machine head, a detection frame is fixedly connected to the top of the base, the detection frame is located on the inner side of the vertical seat, a carrier plate is fixedly connected to the top of the detection frame, a plurality of clamps are fixedly connected to the top of the carrier plate, parts are clamped between the plurality of clamps, a mounting plate is slidably connected to the inner wall of the detection frame, a distance sensor is fixedly connected to the inner wall of the bottom end of the detection frame, the distance sensor is electrically connected to the machine head, a movable hole and a lower knife hole are respectively opened in the middle of the mounting plate and the middle of the carrier plate, a position-matching cylinder is arranged in the middle of the movable hole, the center point of the lower knife hole and the center point of the movable hole are on the same vertical line, the drill bit is composed of a positive cutting edge and a negative cutting edge, the diameter of the positive cutting edge is larger than the diameter of the negative cutting edge, the diameter of the lower knife hole is larger than the diameter of the positive cutting edge, and the diameter of the negative cutting edge is equal to the inner diameter of the position-matching cylinder;

[0006] When the handpiece drives the drill bit to rotate forward, the positive cutting edge has a cutting function, and the reverse cutting edge does not have a cutting function. When the handpiece drives the drill bit to rotate reversely, the positive cutting edge does not have a cutting function, and the reverse cutting edge has a cutting function.

[0007] As a further improvement of the present application, the length of the reverse cutting edge is greater than the length between the top surface of the lower knife hole and the bottom end of the positioning cylinder; through the above arrangement, sufficient length is reserved for the reverse cutting edge to prevent the positive cutting edge from cutting the part before the reverse cutting edge contacts the positioning cylinder.

[0008] As a further improvement of the present application, the upper side of the position-matching tube is set as a plane area, the lower side of the position-matching tube is set as a straight tube area, and the area between the plane area and the straight tube area is set as a smooth area.

[0009] As a further improvement of the present application, a reset rubber sleeve is fixedly connected between the straight-tube area and the inner wall of the movable hole, and the reset rubber sleeve is made of elastic material.

[0010] As another improvement of the present application, the mounting plate is fixedly connected to a limit ring near the top of the movable hole, a sliding groove is provided on the inner wall of the limit ring, and the plane area is located on the inner side of the sliding groove and is slidably connected thereto.

[0011] As another improvement supplement of the present application, a plurality of temperature sensors are fixedly connected to the bottom end of the mounting plate near the movable hole, and a heat conductive wire is fixedly connected between the detection end of the temperature sensor and the outer wall of the straight tube area. Through the above arrangement, different responses can be made to different offset distances of the drill bit, thereby improving the detection accuracy and protecting the drill bit.

[0012] In summary, during the process of drilling holes in parts, the device can detect whether the drill bit is offset, which greatly improves the yield rate of parts and avoids the problem of the entire part being scrapped due to the offset of a single hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of the nose of the first embodiment of the present application;

[0014] Figure 2 This is a state diagram of the first embodiment of the present application when the machine head drives the drill bit to move downward;

[0015] Figure 3 It is a front cross-sectional view of the active hole in the first and second embodiments of the present application;

[0016] Figure 4 This is a state diagram when one end of the reverse cutting edge penetrates the part and is located inside the position-matching cylinder in the first and second embodiments of the present application;

[0017] Figure 5 This is a state diagram of the positive cutting edge penetrating the part in the first and second embodiments of the present application;

[0018] Figure 6This is a front cross-sectional view of the center-to-center cylinder in the second embodiment of the present application;

[0019] Figure 7 This is a diagram showing the movement state of the position pair cylinder when the drill bit is slightly offset in the first and second embodiments of the present application;

[0020] Figure 8 This is a diagram of the movement state of the position barrel when the drill bit is severely offset in the first and second embodiments of the present application.

[0021] Description of the numbers in the figure:

[0022] 1. Base; 2. Vertical seat; 3. Machine head; 4. Drill bit; 401. Positive cutting edge; 402. Negative cutting edge; 5. Detection frame; 6. Carrying plate; 7. Fixture; 8. Parts; 9. Mounting plate; 10. Movable hole; 11. Top spring; 12. Positioning cylinder; 1201. Flat area; 1202. Straight cylinder area; 1203. Smooth area; 13. Distance sensor; 14. Lower knife hole; 15. Reset rubber sleeve; 16. Limiting ring; 1601. Slide groove; 17. Temperature sensor; 18. Thermal wire. DETAILED DESCRIPTION

[0023] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0024] The first implementation method:

[0025] Figure 1-5 and Figure 7-8 The invention shows a drilling device for processing aerospace parts, comprising a base 1, a vertical seat 2 is fixedly connected to the top of the base 1, a machine head 3 is installed at one end of the vertical seat 2, a drill bit 4 is installed at the output end of the machine head 3, a detection frame 5 is fixedly connected to the top of the base 1, the detection frame 5 is located on the inner side of the vertical seat 2, a carrier plate 6 is fixedly connected to the top of the detection frame 5, a plurality of fixtures 7 are fixedly connected to the top of the carrier plate 6, parts 8 are clamped between the plurality of fixtures 7, a mounting plate 9 is slidably connected to the inner wall of the detection frame 5, a distance sensor 13 is fixedly connected to the inner wall of the bottom end of the detection frame 5, and the distance sensor 13 and the machine head 3 are electrically connected. A plurality of top springs 11 are fixedly connected between the bottom end of the mounting plate 9 and the inner wall of the bottom end of the detection frame 5. A movable hole 10 and a lower knife hole 14 are respectively provided in the middle of the mounting plate 9 and the middle of the carrier plate 6. A position-matching cylinder 12 is provided in the middle of the movable hole 10. The center point of the lower knife hole 14 and the center point of the movable hole 10 are on the same vertical line. The drill bit 4 is composed of a positive cutting edge 401 and a negative cutting edge 402. The diameter of the positive cutting edge 401 is larger than the diameter of the negative cutting edge 402. The diameter of the lower knife hole 14 is larger than the diameter of the positive cutting edge 401. The diameter of the negative cutting edge 402 is equal to the inner diameter of the position-matching cylinder 12.

[0026] When the handpiece 3 drives the drill bit 4 to rotate forward, the positive cutting edge 401 has a cutting function, and the reverse cutting edge 402 does not have a cutting function. When the handpiece 3 drives the drill bit 4 to rotate reversely, the positive cutting edge 401 does not have a cutting function, and the reverse cutting edge 402 has a cutting function.

[0027] When in use, place part 8 on the loading plate 6 and fix it with a clamp 7, and the position where the hole in part 8 is to be punched is aligned with the lower knife hole 14. The machine head 3 drives the drill bit 4 to reverse and move downward to punch the part 8. When one end of the reverse cutting edge 402 penetrates the part 8 and is located inside the positioning tube 12, the machine head 3 drives the drill bit 4 to rotate forward and move downward, so that the positive cutting edge 401 cuts the part 8 to complete the punching.

[0028] When the drilling position of the drill bit 4 is offset, it is also offset from the alignment cylinder 12. At this time, the reverse cutting edge 402 cannot pass through the alignment cylinder 12, and when one end of the reverse cutting edge 402 contacts the alignment cylinder 12, it cannot cut the alignment cylinder 12, but pushes the mounting plate 9 to move downward. After the distance sensor 13 obtains the movement of the mounting plate 9, the machine head 3 stops driving the drill bit 4 to rotate, and at this time the positive cutting edge 401 has not yet cut the part 8. The equipment can be checked for the reason why the drill bit 4 deviates from drilling.

[0029] The hole left by the reverse cutting edge 402 on the part 8 is not a finished hole. At the same time, the diameter of the reverse cutting edge 402 is smaller than the diameter of the positive cutting edge 401, so the finished hole drilled by the positive cutting edge 401 will cover the hole left by the reverse cutting edge 402 on the part 8, and will not affect the normal drilling of the part 8 after subsequent maintenance.

[0030] The above arrangement can detect whether the drill bit 4 is offset during the drilling process of the part 8, which greatly improves the yield rate of the part 8 and avoids the problem of the entire part 8 being scrapped due to the offset of a single hole.

[0031] The length of the reverse cutting edge 402 is greater than the length between the top surface of the lower knife hole 14 and the bottom end of the positioning tube 12; through the above arrangement, sufficient length is reserved for the reverse cutting edge 402 to prevent the positive cutting edge 401 from cutting the part 8 when the reverse cutting edge 402 has not yet contacted the positioning tube 12.

[0032] The second implementation method:

[0033] Figure 3-8A drilling device for processing aerospace parts is shown. Different from the first embodiment, the upper side of the position-matching cylinder 12 is set as a plane area 1201, the lower side of the position-matching cylinder 12 is set as a straight cylinder area 1202, and a smooth area 1203 is set between the plane area 1201 and the straight cylinder area 1202. A reset rubber sleeve 15 is fixedly connected between the straight cylinder area 1202 and the inner wall of the movable hole 10. The reset rubber sleeve 15 is made of elastic material. A limiting ring 16 is fixedly connected to the top of the mounting plate 9 near the movable hole 10. A sliding groove 1601 is opened on the inner wall of the limiting ring 16. The plane area 1201 is located on the inner side of the sliding groove 1601 and is slidably connected thereto. A plurality of temperature sensors 17 are fixedly connected to the bottom end of the mounting plate 9 near the movable hole 10. The temperature sensor 17 is electrically connected to the machine head 3. A heat conductor 18 is fixedly connected between the detection end of the temperature sensor 17 and the outer wall of the straight cylinder area 1202.

[0034] Under the action of the reset rubber sleeve 15, the positioning cylinder 12 is located at the center of the movable hole 10. When the counter cutting edge 402 moves downward and deviates and the deviated distance is relatively small, the side surface of the bottom end of the counter cutting edge 402 contacts the positioning cylinder 12. At this time, the downward thrust of the counter cutting edge 402 on the positioning cylinder 12 is reduced, and the side thrust is increased. If the counter cutting edge 402 is forced to descend, the drill bit 4 will be subjected to uneven force.

[0035] Through the above arrangement, when the counter-cutting edge 402 moves downward and deviates and the distance of the deviate is relatively small, the counter-cutting edge 402 pushes the counter-tube 12 to move horizontally and deviate from the center position of the movable hole 10. Under the action of the pulling force of the reset rubber sleeve 15, the friction between some positions of the straight tube area 1202 and the counter-cutting edge 402 increases and the temperature is greater than that of the other positions. At this time, by obtaining the temperature difference at different positions of the straight tube area 1202 through multiple temperature sensors 17, it is possible to determine whether the drill bit 4 is deviated during drilling.

[0036] When the counter cutting edge 402 moves downward and deflects, and the deflection distance is relatively large, the bottom end of the counter cutting edge 402 contacts the plane area 1201, and the alignment cylinder 12 only has a downward thrust, pushing the mounting plate 9 to move downward.

[0037] Through the above arrangement, different responses can be made to different offset distances of the drill bit 4, which can improve the detection accuracy and protect the drill bit 4 at the same time.

[0038] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A drilling device for aerospace parts processing, comprising a base (1), a top end of the base (1) being fixedly connected to a vertical seat (2), one end of the vertical seat (2) being mounted with a machine head (3), characterized in that: The output end of the machine head (3) is equipped with a drill bit (4); the top of the base (1) is fixedly connected to a detection frame (5); the detection frame (5) is located on the inner side of the vertical seat (2); the top of the detection frame (5) is fixedly connected to a carrier plate (6); the top of the carrier plate (6) is fixedly connected to a plurality of clamps (7); parts (8) are clamped between the plurality of clamps (7); the inner wall of the detection frame (5) is slidably connected to a mounting plate (9); the inner wall of the bottom end of the detection frame (5) is fixedly connected to a distance sensor (13); the distance sensor (13) is electrically connected to the machine head (3); the mounting plate A movable hole (10) and a lower cutter hole (14) are respectively provided in the middle of the movable hole (10) and the middle of the carrier plate (6); a position matching tube (12) is provided in the middle of the movable hole (10); the center point of the lower cutter hole (14) and the center point of the movable hole (10) are on the same vertical line; the drill bit (4) is composed of a positive cutting edge (401) and a negative cutting edge (402); the diameter of the positive cutting edge (401) is larger than the diameter of the negative cutting edge (402); the diameter of the lower cutter hole (14) is larger than the diameter of the positive cutting edge (401); and the diameter of the negative cutting edge (402) is equal to the inner diameter of the position matching tube (12); When the machine head (3) drives the drill bit (4) to rotate in the forward direction, the positive cutting edge (401) has a cutting effect, and the reverse cutting edge (402) does not have a cutting effect. When the machine head (3) drives the drill bit (4) to rotate in the reverse direction, the positive cutting edge (401) does not have a cutting effect, and the reverse cutting edge (402) has a cutting effect.

2. The drilling equipment for aerospace parts processing according to claim 1, characterized in that: The length of the reverse cutting edge (402) is greater than the length between the top surface of the lower knife hole (14) and the bottom end of the seat counter cylinder (12).

3. The drilling equipment for aerospace parts processing according to claim 1, characterized in that: The upper side of the position-matching tube (12) is set as a plane area (1201), the lower side of the position-matching tube (12) is set as a straight tube area (1202), and the area between the plane area (1201) and the straight tube area (1202) is set as a smooth area (1203).

4. A drilling device for aerospace parts processing according to claim 3, characterized in that: A reset rubber sleeve (15) is fixedly connected between the straight-tube area (1202) and the inner wall of the movable hole (10), and the reset rubber sleeve (15) is made of elastic material.

5. The drilling equipment for aerospace parts processing according to claim 4, characterized in that: The top of the mounting plate (9) near the movable hole (10) is fixedly connected to a limit ring (16), the inner wall of the limit ring (16) is provided with a slide groove (1601), and the plane area (1201) is located on the inner side of the slide groove (1601) and is slidably connected thereto.

6. The drilling equipment for aerospace parts processing according to claim 5, characterized in that: A plurality of temperature sensors (17) are fixedly connected to the bottom end of the mounting plate (9) near the movable hole (10), a heat conducting wire (18) is fixedly connected between the detection end of the temperature sensor (17) and the outer wall of the straight tube area (1202), and the temperature sensor (17) and the machine head (3) are electrically connected.

7. The drilling equipment for aerospace parts processing according to claim 1, characterized in that: A plurality of top springs (11) are fixedly connected between the bottom end of the mounting plate (9) and the inner wall of the bottom end of the detection frame (5).

Images