Compact type automatic hole forming mechanism based on pneumatic main shaft

Abstract

The utility model discloses a compact type automatic drilling mechanism based on a pneumatic main shaft. The compact type automatic drilling mechanism comprises the pneumatic main shaft, a visual module, a main shaft feeding module, a visual feeding module and a tail end base. The main shaft feeding module and the visual feeding module are fixedly installed on the tail end base through fasteners, the pneumatic main shaft is connected with the main shaft feeding module, the visual module is connected with the visual feeding module, and the pneumatic main shaft and the visual module are installed side by side. The compact type automatic drilling mechanism provides the feeding amount for the visual module through the visual feeding module, recognizes the position to be drilled through the visual module and is further used for providing the axial feeding amount for the pneumatic main shaft through the main shaft feeding module, and drilling is conducted through the pneumatic main shaft. According to the technical scheme provided by the utility model, the problems that an end effector used for automatic drilling in the prior art is complex in structure and large in dead weight, a high-power carrier must be used, and an electric main shaft is high in price, poor in economical efficiency and the like are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to but not limited to the automatic hole making technical field in the field of aircraft assembly, especially a compact automatic hole making mechanism based on pneumatic spindle. BACKGROUND

[0002] With the progress of technology, automatic hole making technology has been widely used in the field of aviation assembly.

[0003] The end effector is the main functional component for realizing automatic hole making, but the existing end effector has the following deficiencies: first, in order to pursue comprehensive functions, the end effector is often designed to have a complex structure and a large self-weight, and a high-power carrier must be used; second, the hole making spindle usually adopts an electric spindle, which is expensive and has poor economy. UTILITY MODEL CONTENT

[0004] The utility model discloses a compact automatic hole making mechanism based on pneumatic spindle to solve the problems of the existing automatic hole making, such as complex structure, large self-weight, the necessity of using a high-power carrier, expensive electric spindle and poor economy.

[0005] The utility model discloses a compact automatic hole making mechanism based on pneumatic spindle, which comprises a pneumatic spindle 1, a vision module 2, a spindle feeding module 3, a vision feeding module 4 and an end base 5.

[0006] The spindle feeding module 3 and the vision feeding module 4 are fixedly installed on the end base 5 through fasteners respectively, the pneumatic spindle 1 is connected with the spindle feeding module 3 through a fastener, the vision module 2 is connected with the vision feeding module 4 through a fastener, and the pneumatic spindle 1 and the vision module 2 are installed side by side.

[0007] The compact automatic hole making mechanism is used for providing a feeding amount to the vision module 2 through the vision feeding module 4, identifying the position to be drilled through the vision module 2, providing an axial feeding amount to the pneumatic spindle 1 through the spindle feeding module 3, and implementing hole making through the pneumatic spindle 1.

[0008] Optionally, in the compact automatic hole making mechanism based on pneumatic spindle, the pneumatic spindle 1 comprises a pneumatic motor 8, a connector 9, a transmission module 10, a support base 11, a threaded shank tool handle 12 and a threaded shank tool 13.

[0009] The main shaft end of the pneumatic motor 8 is provided with a spline 14, and the one end opening of the connector 9 is provided with a spline groove 15. The spline groove is used to connect the main shaft of the pneumatic motor 8 with the connector 9. The one end of the threaded shank tool holder 12 is connected with the other end opening of the connector 9. The other end of the threaded shank tool holder 12 passes through the center hole of the support base 11 and the transmission module 10. The extended end is screwed with the threaded shank tool 13. The transmission module 10 and the support base 11 are connected by fasteners

[0010] Optionally, in the compact automatic hole forming mechanism based on the pneumatic spindle, the connector 9 comprises a front connecting sleeve 16, a middle connecting sleeve 17, a rear connecting sleeve 18, a fixing sheet 19 and a screw 20.

[0011] The fixing sheet 19 is clamped between the front connecting sleeve 16 and the middle connecting sleeve 17, and the screw 20 is used to pass through the front connecting sleeve 16, the fixing sheet 19 and the middle connecting sleeve 17 from the end surface of the front connecting sleeve 16 to fix the front connecting sleeve 16 and the middle connecting sleeve 17. The fixing sheet 19 is clamped between the rear connecting sleeve 18 and the middle connecting sleeve 17, and the screw 20 is used to pass through the rear connecting sleeve 18, the fixing sheet 19 and the middle connecting sleeve 17 from the end surface of the rear connecting sleeve 18 to fix the rear connecting sleeve 18 and the middle connecting sleeve 17. Thus, the front connecting sleeve 16, the middle connecting sleeve 17 and the rear connecting sleeve 18 form an integrated connector structure. The spline groove 15 is formed on the connecting end surface of the front connecting sleeve 16 to connect with the spline 14 at the end of the main shaft of the pneumatic motor 8.

[0012] Optionally, in the compact automatic hole forming mechanism based on the pneumatic spindle, the connector 9 further comprises a locking pin 21.

[0013] The connecting end surfaces of the front connecting sleeve 16 and the rear connecting sleeve 18 are respectively provided with locking grooves 22 along the radial direction. The side walls of the front connecting sleeve 16 and the rear connecting sleeve 18 are respectively provided with locking grooves 22 and locking holes 23 perpendicular to the axis. The locking pin 21 is inserted into the locking hole 23, and the width of the locking groove 22 on the connecting end surface is reduced by tightening the locking pin 21.

[0014] Optionally, in the compact automatic hole forming mechanism based on the pneumatic spindle, the transmission module 10 comprises a bearing housing 24, a tool holder sleeve 25, a bearing sleeve 26, an outer ring limiting sleeve 27, an inner ring limiting sleeve 28, a limiting shoulder sleeve 29 and a ball bearing 30.

[0015] The bearing sleeve 26 is arranged as a stepped sleeve structure, two ball bearings 30 are installed in the bearing sleeve 26, one ball bearing 30 is installed close to the stepped base, one ball bearing 30 is installed at the middle position, the outer ring limiting sleeve 27 and the inner ring limiting sleeve 28 are installed between the two ball bearings 30, the small-diameter end of the bearing sleeve 26 is inserted into one end of the tool shank sleeve 25, the stepped base outer end of the bearing sleeve 26 is provided with the limiting shoulder sleeve 29, the bearing housing 24 is installed outside the bearing sleeve 26, and is sleeved outside one end of the tool shank sleeve 25; the end of the threaded shank tool handle 12 passes through the limiting shoulder sleeve 29, the two ball bearings 30, the inner ring limiting sleeve 28 and the other end of the tool shank sleeve 25, and then the extended end is threadedly connected with the threaded shank tool 13, and the inner end of the limiting shoulder sleeve 29 abuts against the outer end of the ball bearing 30 at the stepped base of the bearing sleeve 26.

[0016] Optionally, in the compact automatic hole forming mechanism based on the pneumatic spindle, the sealing structure of the transmission module 10 comprises a sealing ring 31, a sealing cover 32 and a sealing cover 33.

[0017] The sealing ring 31 is arranged between the stepped base outer wall of the bearing sleeve 26 and the inner wall of the bearing housing 24, the sealing ring 32 is arranged at the groove of the stepped base of the bearing sleeve 26, and the sealing cover 33 is arranged at the end of the small-diameter end of the bearing sleeve 26 and is located between the small-diameter end of the bearing sleeve 26 and the threaded shank tool handle 12.

[0018] The compact automatic hole forming mechanism based on the pneumatic spindle has the following beneficial effects: 1) the overall structure is compact and light, simple and practical in function, and does not need a high-power carrier; 2) the low-cost pneumatic spindle 1 is designed to ensure the efficiency, precision and quality consistency of hole forming, and effectively reduces the cost of the equipment; 3) without using a high-cost special tool handle, the connector 9 and the threaded shank tool handle 12 are designed for the pneumatic spindle 12. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings are used to provide a further understanding of the technical scheme of the utility model, and constitute a part of the specification, and are used together with the embodiments of the application to explain the technical scheme of the utility model, and do not constitute a limitation on the technical scheme of the utility model.

[0020] Figure 1A schematic diagram of a compact automatic hole-making mechanism based on a pneumatic spindle provided for an embodiment of this utility model;

[0021] Figure 2 for Figure 1 The illustrated embodiment provides a schematic diagram of the pneumatic spindle in a compact automatic hole-making mechanism based on a pneumatic spindle.

[0022] Figure 3 for Figure 2 The schematic diagram of the connector in the pneumatic spindle provided in the embodiment shown; Figure 3 Figure a is the front view, figure b is the axial section view, and figure c is the radial section view.

[0023] Figure 4 for Figure 2 A schematic diagram of the end face of the connector in the pneumatic spindle provided in the embodiment shown; Figure 4 Figure a in the diagram is an end view of the front connecting sleeve, and Figure b is an end view of the rear connecting sleeve.

[0024] Figure 5 for Figure 2 A cross-sectional schematic diagram of the transmission module in the pneumatic spindle provided in the embodiment shown.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Pneumatic spindle; 2. Vision module; 3. Spindle feed module; 4. Vision feed module; 5. End base; 6. Presser foot; 7. Chip suction interface; 8. Pneumatic motor; 9. Connector; 10. Transmission module; 11. Support base; 12. Threaded tool holder; 13. Threaded tool holder; 14. Spline; 15. Spline groove; 16. Front connecting sleeve; 17. Middle connecting sleeve; 18. Rear connecting sleeve; 19. Fixing plate; 20. Screw; 21. Locking pin; 22. Locking groove; 23. Locking hole; 24. Bearing housing; 25. Tool holder sleeve; 26. Bearing sleeve; 27. Outer ring limiting sleeve; 28. Inner ring limiting sleeve; 29. ​​Limiting shoulder sleeve; 30. Ball bearing; 31. Bearing housing pin; 32. Sealing ring; 33. Sealing cover. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0028] As explained in the background section above, automated drilling technology is widely used in the aerospace assembly field. However, the existing end effectors are complex in structure and heavy in weight, which necessitates the use of high-power carriers. Furthermore, since drilling spindles are usually electric spindles, they are expensive and not economical.

[0029] To address the aforementioned problems with existing end effectors, this utility model provides a compact automatic hole-making mechanism based on a pneumatic spindle. This simplifies the end effector structure, reduces the equipment's weight, replaces the electric spindle with a pneumatic spindle, lowers equipment costs, and improves economic efficiency.

[0030] The present invention provides the following specific embodiments, which can be combined with each other. For the same or similar concepts or processes, they will not be described again in some embodiments.

[0031] Figure 1 This is a schematic diagram of a compact automatic hole-making mechanism based on a pneumatic spindle, provided as an embodiment of the present invention. See also... Figure 1 As shown, the main structure of the compact automatic hole-making mechanism based on a pneumatic spindle provided in this embodiment of the present invention includes: a pneumatic spindle 1, a vision module 2, a spindle feed module 3, a vision feed module 4, and an end base 5.

[0032] like Figure 1 As shown, the spindle feed module 3 and vision feed module 4 are fixedly mounted on the end base 5 by fasteners, and the spindle feed module 3 and vision feed module 4 are installed side by side; in addition, the pneumatic spindle 1 is connected to the spindle feed module 3 by fasteners, and the vision module 2 is connected to the vision feed module 4 by fasteners, so that the pneumatic spindle 1 and vision module 2 are installed side by side.

[0033] The compact automatic hole-making mechanism based on a pneumatic spindle in this embodiment of the invention is used to provide feed to the vision module 2 through the vision feed module 4 and to identify the position of the hole to be made through the vision module 2. During the hole-making process, the compact automatic hole-making mechanism provides feed along its axial direction to the pneumatic spindle 1 through the spindle feed module 3 and uses the pneumatic spindle 1 to make the hole.

[0034] In one implementation of this utility model, an embodiment of the pneumatic spindle 1 is provided. Figure 2 for Figure 1 The illustrated embodiment provides a schematic diagram of the pneumatic spindle in a compact automatic hole-making mechanism based on a pneumatic spindle. Figure 3 for Figure 2 The schematic diagram of the connector in the pneumatic spindle provided in the embodiment shown; Figure 3 Figure a is the front view, figure b is the axial section view, and figure c is the radial section view. Figure 4 forFigure 2 The end surface diagram of the connector in the pneumatic spindle is shown in the embodiment provided by the application; Figure 4 Fig. a is an end surface diagram of the front connecting sleeve, and Fig. b is an end surface diagram of the rear connecting sleeve.

[0035] The pneumatic spindle 1 in the implementation mode comprises a pneumatic motor 8, a connector 9, a transmission module 10, a support base 11, a threaded shank tool holder 12 and a threaded shank tool 13. The pneumatic motor 8 is provided with a spline 14 at the end of the spindle, the connector 9 is provided with a spline groove 15 at one end, the pneumatic motor 8 spindle and the connector 9 are connected through the spline groove, the threaded shank tool holder 12 is connected at one end with the other end of the connector 9, the other end of the threaded shank tool holder 12 passes through the center hole of the support base 11 and the transmission module 10, the end part of the threaded shank tool holder 12 is screwed with the threaded shank tool 13, and the transmission module 10 and the support base 11 are connected by fasteners. It should be noted that the pneumatic spindle 1 is connected with the spindle feeding module 3 through the support base 11. In addition, the end part of the pneumatic spindle 1 is provided with a pressure foot 6, and the outer side of the end part is provided with a chip suction interface 7.

[0036] In one implementation mode of the embodiment of the utility model, as shown in Figure 3 and Figure 4 As shown, the connector 9 in the pneumatic spindle 1 comprises a front connecting sleeve 16, a middle connecting sleeve 17, a rear connecting sleeve 18, a fixing sheet 19, a screw 20 and a locking pin 21.

[0037] In the implementation mode, the fixing sheet 19 is clamped between the front connecting sleeve 16 and the middle connecting sleeve 17, and the front connecting sleeve 16 and the middle connecting sleeve 17 are fixedly connected by the screw 20 passing through the front connecting sleeve 16, the fixing sheet 19 and the middle connecting sleeve 17 from the end surface of the front connecting sleeve 16; the fixing sheet 19 is clamped between the rear connecting sleeve 18 and the middle connecting sleeve 17, and the rear connecting sleeve 18 and the middle connecting sleeve 17 are fixedly connected by the screw 20 passing through the rear connecting sleeve 18, the fixing sheet 19 and the middle connecting sleeve 17 from the end surface of the rear connecting sleeve 18, so as to form an integrated connector structure by the front connecting sleeve 16, the middle connecting sleeve 17 and the rear connecting sleeve 18, and the spline groove 15 for cooperating with the spline 14 at the end of the spindle of the pneumatic motor 8 is formed on the connecting end surface of the front connecting sleeve 16.

[0038] In the implementation mode, in order to ensure the reliability of the connection of the two ends of the connector 9 with the spindle of the pneumatic motor 8 and the threaded shank tool holder 12 respectively, the connecting end surfaces of the outer sides of the front connecting sleeve 16 and the rear connecting sleeve 18 are respectively provided with locking grooves 22 along the radial direction, and the side walls of the front connecting sleeve 16 and the rear connecting sleeve 18 are respectively provided with the locking grooves 22 and locking holes 23 perpendicular to the axis, the locking pin 21 is inserted into the locking hole 23, and the width of the locking groove 22 formed on the connecting end surface is reduced by tightening the locking pin 21, so as to lock the other components connected on the connecting end surface.

[0039] It should be noted that, as Figure 2 and Figure 3 The locking hole 23 of the front connecting sleeve 16 and the rear connecting sleeve 18 is arranged on one side of the locking groove 22 of the side wall close to the connecting end face, and is used for cooperating with the locking groove 22 of the connecting end face to realize the effect of reducing the width.

[0040] In an implementation manner of the embodiment of the utility model, as Figure 2 and Figure 5 The transmission module 10 in the pneumatic spindle 1 comprises: a bearing shell 24, a tool shank sleeve 25, a bearing sleeve 26, an outer ring limiting sleeve 27, an inner ring limiting sleeve 28, a limiting shoulder sleeve 29, a ball bearing 30, a sealing ring 31, a sealing cover 32 and a sealing cover 33.

[0041] In the implementation manner, the bearing sleeve 26 is arranged as a stepped sleeve structure, two ball bearings 30 are installed in the bearing sleeve 26, one ball bearing 30 is installed at the position close to the stepped base, one ball bearing 30 is installed at the middle position, the outer ring limiting sleeve 27 and the inner ring limiting sleeve 28 are installed between the two ball bearings 30, the small-diameter end of the bearing sleeve 26 is inserted into one end of the tool shank sleeve 25, the outer end of the stepped base of the bearing sleeve 26 is installed with the limiting shoulder sleeve 29, and the bearing shell 24 is installed on the outer side of the bearing sleeve 26 and is sleeved on the outer side of one end of the tool shank sleeve 25; the end of the threaded shank tool handle 12 is integrally threaded through the limiting shoulder sleeve 29, the two ball bearings 30, the inner ring limiting sleeve 28 and the other end of the tool shank sleeve 25, and the threaded connection between the extended end and the threaded shank tool 13 is realized, and the inner end of the limiting shoulder sleeve 29 is abutted against the outer end of the ball bearing 30 at the stepped base of the bearing sleeve 26.

[0042] It should be noted that the sealing structure of the transmission module 10 in the implementation manner comprises: the sealing ring 31 is installed between the outer wall of the stepped base of the bearing sleeve 26 and the inner wall of the bearing shell 24, the sealing ring 32 is installed at the recess of the stepped base of the bearing sleeve 26, and the sealing cover 33 is installed at the end of the small-diameter end of the bearing sleeve 26 and is located between the small-diameter end of the bearing sleeve 26 and the threaded shank tool handle 12.

[0043] The compact automatic hole forming mechanism provided by the embodiment of the utility model, which comprises: main shaft feeding module 3 and visual feeding module 4 installed side by side on the end base 5, and pneumatic main shaft 1 installed on the main shaft feeding module 3 and visual module 2 installed on the visual feeding module 4; the compact automatic hole forming mechanism can identify the hole forming position to be formed through the visual module 2 and implement hole forming through the pneumatic main shaft 1. The compact automatic hole forming mechanism provided by the embodiment of the utility model has the following beneficial effects: 1) the overall structure is compact and light, simple and practical in function, and a high-power carrier is not needed; 2) the low-cost pneumatic main shaft 1 is designed under the condition of ensuring the efficiency, precision and quality consistency of hole forming, thereby effectively reducing the cost of the equipment; 3) a high-cost special tool shank is not needed, and the connector 9 and the threaded shank tool 12 special for the pneumatic main shaft 12 are designed.

[0044] Although the embodiments disclosed by the utility model are as above, the content is only the embodiment adopted for the purpose of facilitating the understanding of the utility model, and is not used to limit the utility model. Any person skilled in the art of the utility model can make any modification and change in the implementation form and details without departing from the spirit and scope of the utility model disclosed by the utility model. However, the patent protection scope of the utility model still needs to be limited by the range defined by the attached claims.

Claims

1. A compact automatic hole making mechanism based on a pneumatic spindle, characterized by, The compact automatic hole making mechanism comprises a pneumatic spindle (1), a vision module (2), a spindle feeding module (3), a vision feeding module (4) and an end base (5). The spindle feeding module (3) and the vision feeding module (4) are fixedly installed on the end base (5) through fasteners, the pneumatic spindle (1) is connected with the spindle feeding module (3) through a fastener, the vision module (2) is connected with the vision feeding module (4) through a fastener, and the pneumatic spindle (1) and the vision module (2) are installed side by side. The compact automatic hole making mechanism is used for providing a feeding amount to the vision module (2) through the vision feeding module (4), identifying a hole making position through the vision module (2), providing a feeding amount along an axial direction of the pneumatic spindle (1) through the spindle feeding module (3), and making holes through the pneumatic spindle (1). The pneumatic spindle (1) comprises a pneumatic motor (8), a connector (9), a transmission module (10), a support base (11), a threaded shank tool holder (12) and a threaded shank tool (13).

2. The compact automatic hole making mechanism based on pneumatic spindle according to claim 1, characterized in that, The spindle end of the pneumatic motor (8) is provided with a spline (14), one end of the connector (9) is provided with a spline groove (15), the spindle of the pneumatic motor (8) is connected with the connector (9) through the spline groove, one end of the threaded shank tool holder (12) is connected with the other end of the connector (9), the other end of the threaded shank tool holder (12) passes through the center holes of the support base (11) and the transmission module (10), the end part of the threaded shank tool holder (12) is threadedly connected with the threaded shank tool (13), and the transmission module (10) is connected with the support base (11) through fasteners. The connector (9) comprises a front connector sleeve (16), a middle connector sleeve (17), a rear connector sleeve (18), a fixing sheet (19) and a screw (20).

3. The compact automatic hole making mechanism based on pneumatic spindle according to claim 2, characterized in that, The fixing sheet (19) is arranged between the front connector sleeve (16) and the middle connector sleeve (17), and the front connector sleeve (16) and the middle connector sleeve (17) are fixedly connected through the screw (20) penetrating the front connector sleeve (16), the fixing sheet (19) and the middle connector sleeve (17) from the end face of the front connector sleeve (16); the fixing sheet (19) is arranged between the rear connector sleeve (18) and the middle connector sleeve (17), and the rear connector sleeve (18) and the middle connector sleeve (17) are fixedly connected through the screw (20) penetrating the rear connector sleeve (18), the fixing sheet (19) and the middle connector sleeve (17) from the end face of the rear connector sleeve (18), so that the front connector sleeve (16), the middle connector sleeve (17) and the rear connector sleeve (18) form an integrated connector structure, and the spline groove (15) for cooperating with the spline (14) at the spindle end of the pneumatic motor (8) is arranged on the connecting end face of the front connector sleeve (16). The connector (9) further comprises a locking pin (21).

4. The compact automatic hole making mechanism based on pneumatic spindle according to claim 3, characterized in that, ​ The locking grooves (22) are radially arranged on the outer side of the front connecting sleeve (16) and the rear connecting sleeve (18), and the side walls of the front connecting sleeve (16) and the rear connecting sleeve (18) are respectively provided with the locking grooves (22) and locking holes (23) perpendicular to the axis, the locking pin (21) is inserted into the locking hole (23), and the width of the locking groove (22) on the connecting end face is reduced by tightening the locking pin (21).

5. The compact automatic hole making mechanism based on pneumatic spindle as claimed in claim 2 wherein, The transmission module (10) comprises a bearing housing (24), a tool shank sleeve (25), a bearing sleeve (26), an outer ring limiting sleeve (27), an inner ring limiting sleeve (28), a limiting shoulder sleeve (29) and ball bearings (30). The bearing sleeve (26) is provided as a stepped sleeve structure, two ball bearings (30) are installed in the bearing sleeve (26), one ball bearing (30) is installed near the stepped base, one ball bearing (30) is installed at the middle position, the outer ring limiting sleeve (27) and the inner ring limiting sleeve (28) are installed between the two ball bearings (30), the small-diameter end of the bearing sleeve (26) is inserted into one end of the tool shank sleeve (25), the outer end of the stepped base of the bearing sleeve (26) is provided with the limiting shoulder sleeve (29), the bearing housing (24) is installed on the outer side of the bearing sleeve (26) and is sleeved on the outer side of one end of the tool shank sleeve (25); the end of the threaded shank tool handle (12) is integrally inserted through the limiting shoulder sleeve (29), the two ball bearings (30), the inner ring limiting sleeve (28) and the other end of the tool shank sleeve (25), the threaded connection between the threaded shank tool handle (12) and the threaded shank tool (13) is achieved, and the inner end of the limiting shoulder sleeve (29) abuts against the outer end of the ball bearing (30) at the stepped base of the bearing sleeve (26).

6. The compact automatic hole making mechanism based on pneumatic spindle according to claim 5, characterized by, The sealing structure of the transmission module (10) comprises a sealing ring (31), a first sealing cover (32) and a second sealing cover (33). The sealing ring (31) is installed between the outer wall of the stepped base of the bearing sleeve (26) and the inner wall of the bearing housing (24), the first sealing cover (32) is installed at the groove of the stepped base of the bearing sleeve (26), and the second sealing cover (33) is installed at the end of the small-diameter end of the bearing sleeve (26) and is located between the small-diameter end of the bearing sleeve (26) and the threaded shank tool handle (12).

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