A cambered drilling tool

Abstract

The application discloses a cambered surface drilling tool, which comprises a base, a height scale, an axial sliding mechanism, a positioning mechanism and a fastening assembly. The positioning mechanism comprises an arc-shaped cantilever, a sliding assembly and a locking piece. The sliding assembly is provided with a positioning hole sleeve corresponding to the sidewall of the height scale and used for positioning. The central shaft of the sliding assembly and the central shaft of the arc-shaped cantilever are coincident with the central shaft of the height scale. The height scale slides along the circumference of the base to realize angle deflection. The sliding assembly slides along the circumference of the arc-shaped cantilever and deflects in the opposite direction to realize angle deflection, so that the positioning hole sleeve corresponds to the position to be drilled. The height scale of the application slides along the circumference of the base to realize angle deflection, and the sliding assembly slides along the circumference of the arc-shaped cantilever to realize angle deflection in the opposite direction. The two deflection modes can avoid the interference of the height scale to the positioning hole sleeve. The positioning hole sleeve determines the position to be drilled, realizes the circumferential drilling of the workpiece to be drilled, has high drilling precision, can drill different workpieces and has high universality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drilling tooling, in particular to an arc surface drilling tooling. BACKGROUND

[0002] After the skin of the large-diameter cylindrical riveting piece is installed, a hole needs to be opened on the skin, and a support is installed. The support structure is shown in Figure 1 The traditional support positioning hole general hole drilling tooling is shown in Figure 2 The traditional method is to use the scribing method to determine the height with a measuring tool, and the positioning hole of the support on the skin is determined by the installation position of the positioning hole plate. First, the installation position of the fixed support is determined by scribing, and then the fixed support is installed on the stringer. The fixed support has an installation hole, and the positioning hole plate is installed on the fixed support. According to the position of the positioning hole on the positioning hole plate, a long drill bit is used to pass through the positioning hole of the positioning hole plate, and then the skin is drilled.

[0003] The above-mentioned method has the following defects:

[0004] (1) The precision is determined by scribing and visual comparison, resulting in low drilling precision;

[0005] (2) Poor universality; since the positioning hole on the positioning hole plate needs to be drilled at any time according to the different mounting holes of the support, too many holes on the positioning hole plate will cause the positioning plate to be scrapped, thereby causing the problem of poor universality.

[0006] (3) When drilling the skin through the positioning hole on the positioning hole plate, the position of the positioning hole plate cannot be adjusted at any time, resulting in low drilling efficiency. SUMMARY

[0007] The purpose of the present application is to provide an arc surface drilling tooling to solve the problems of low drilling precision and poor universality of the existing drilling tooling.

[0008] The technical solution of the present application to solve the above technical problems is as follows:

[0009] An arc surface drilling tooling, comprising: a base, a height gauge arranged on the base and sliding along the circumference of the base, and an axial sliding mechanism and a positioning mechanism respectively slidingly arranged on the height gauge, the axial sliding mechanism being connected with the positioning mechanism through a fastening assembly;

[0010] The positioning mechanism comprises an arc-shaped cantilever slidingly matched with the height gauge, and a sliding assembly arranged on the outer side of the arc-shaped cantilever and slidingly matched with the arc-shaped cantilever, the sliding assembly being connected with the arc-shaped cantilever through a locking piece, and the sliding assembly being provided with a positioning hole sleeve corresponding to the side wall of the height gauge and used for positioning;

[0011] The central axis of the sliding assembly and the central axis of the arc-shaped cantilever are coincided with the central axis of the height ruler, the height ruler slides along the base to realize angular deflection, the sliding assembly slides along the arc-shaped cantilever to realize angular deflection in the opposite direction, and the positioning hole sleeve corresponds to the position to be drilled.

[0012] The base is fixed on the flange plate of the riveting member through screws, the height ruler slides along the base to adjust the deflection angle of the height ruler on the base, the axial sliding mechanism slides along the height ruler to adjust the height of the positioning mechanism, and the fastening assembly is used for connecting and fixing the axial sliding mechanism and the positioning mechanism; the sliding assembly in the positioning mechanism slides along the arc-shaped cantilever to adjust the deflection angle of the sliding assembly on the arc-shaped cantilever in the opposite direction, so that the deflection angle of the positioning hole sleeve is adjusted, the position to be drilled is positioned through the positioning hole sleeve, the sliding assembly and the arc-shaped cantilever are connected and locked through the locking member after positioning, and then the external drill is inserted into the positioning hole sleeve, so that the workpiece to be drilled is drilled, and circumferential drilling is realized.

[0013] The central axis of the sliding assembly and the central axis of the arc-shaped cantilever are coincided with the central axis of the height ruler, the height ruler slides along the base to realize angular deflection, further driving the sliding assembly to slide along the arc-shaped cantilever to realize angular deflection in the opposite direction, the two deflection modes can avoid the interference of the height ruler on the positioning hole sleeve, the position to be drilled is determined through the positioning hole sleeve, the circumferential drilling of the workpiece to be drilled is realized, the drilling precision is high, different workpieces can be drilled, the universality is strong, the application range is wide, and the drilling efficiency is greatly improved.

[0014] Further, the arc-shaped cantilever comprises an arc-shaped connecting segment and an arc-shaped sliding segment connected in sequence, the arc-shaped connecting segment is connected with the axial sliding mechanism through the fastening assembly, and the sliding assembly slides along the arc-shaped sliding segment in the circumferential direction and is connected with the locking member.

[0015] Further, the sliding assembly comprises an arc-shaped connecting plate, an arc-shaped positioning plate coaxial with the arc-shaped connecting plate, and a straight plate connecting the arc-shaped connecting plate and the arc-shaped positioning plate, and the two ends of the straight plate are perpendicular to the arc-shaped connecting plate and the arc-shaped positioning plate, respectively.

[0016] The arc-shaped connecting plate is in sliding cooperation with the arc-shaped sliding segment and is connected with the locking member, and the positioning hole sleeve is detachably connected to the arc-shaped positioning plate.

[0017] The arc-shaped connecting plate of the present application slides along the arc-shaped sliding segment in the circumferential direction to realize angular deflection, thereby driving the positioning hole sleeve on the arc-shaped positioning plate to angularly deflect, thereby adjusting the circumferential deflection angle of the positioning hole sleeve, positioning the position to be drilled, and then inserting the external drill into the positioning hole sleeve to realize the drilling action.

[0018] Further, the arc-shaped sliding segment is provided with a T-shaped through groove in the circumferential direction.

[0019] The inner side of the arc-shaped connecting plate is provided with a first sliding block in sliding fit with the T-shaped tail of the T-shaped through slot, the first sliding block is connected with a screw rod away from the side wall of the arc-shaped connecting plate, the inner side of the arc-shaped connecting plate is in contact with the outer side of the arc-shaped sliding section, and the locking piece is located in the T-shaped head of the T-shaped through slot and is connected with the screw rod.

[0020] The sliding block of the present application is in sliding fit with the T-shaped tail of the T-shaped through slot, the arc-shaped connecting plate is located on the outer side of the arc-shaped sliding section, the locking piece is located on the inner side of the T-shaped head of the T-shaped through slot, and the screw rod passes through the T-shaped head of the T-shaped through slot and is connected with the locking piece, so that the locking piece locks the sliding assembly and the arc-shaped cantilever, and the sliding position of the sliding assembly is limited.

[0021] Further, the arc-shaped connecting section and the arc-shaped sliding section are integrally formed, and the straight plate is integrally formed with the arc-shaped connecting plate and the arc-shaped positioning plate.

[0022] Further, the base is provided with a sliding groove in the circumferential direction, the bottom of the height ruler is provided with a second sliding block in sliding fit with the sliding groove, the first angle scale is arranged on the side of the base close to the sliding groove, the base is provided with a first positioning hole and a second positioning hole, and the first positioning hole corresponds to the 0 scale line of the first angle scale.

[0023] Further, the arc-shaped sliding section is provided with a second angle scale, the extension direction of the second angle scale is opposite to that of the first angle scale, and the 0 scale line of the second angle scale corresponds to the straight plate.

[0024] When the second sliding block corresponds to the 0 scale line of the first angle scale and the straight plate corresponds to the 0 scale line of the second angle scale, the central axis of the positioning hole sleeve, the central axis of the first positioning hole and one side of the height ruler are located on the same plane.

[0025] The first angle scale on the base and the second angle scale on the arc-shaped sliding section facilitate confirmation of the deflection angle of the height ruler and the sliding assembly by the staff, the first positioning hole corresponds to the 0 scale line of the first angle scale, the angle between the first positioning hole and the position to be punched can be obtained according to the design, the deflection angle of the height ruler along the base minus the deflection angle of the first positioning hole and the position to be punched is the reverse deflection angle of the sliding assembly along the arc-shaped cantilever, at this time, the positioning hole sleeve corresponds to the position to be drilled, and then the external drill bit is inserted into the positioning hole sleeve, so that the circumferential drilling of the workpiece to be drilled is realized.

[0026] Further, the axial sliding mechanism comprises an axial sliding block and a connecting block arranged on the outer wall of the axial sliding block, the axial sliding block is provided with a sliding cavity matched with the size of the height ruler, and the axial sliding block is provided with a first abutting piece abutting against the outer wall of the height ruler.

[0027] The sliding cavity on the axial slider is matched with the height scale, the first abutting member passes through the axial slider and abuts against the height scale, and the limiting of the axial slider is realized.

[0028] Further, a through groove matched with the height scale is arranged on the arc-shaped connecting section, the side wall of the through groove close to the arc-shaped sliding section is connected with a fastening block, and the groove diameter of the through groove is greater than the diameter of the height scale.

[0029] Further, the fastening assembly comprises a fastening ring and a second abutting member, the fastening ring is sleeved on the outer wall of the connecting block and the fastening block and is abutted by the second abutting member.

[0030] The fastening ring of the present application is pre-sleeved on the connecting block, when the positioning mechanism is driven to slide along the height scale, the fastening ring is pushed in the direction of the fastening block when the top of the fastening block contacts the bottom of the connecting block, when the fastening ring sleeves the connecting block and the fastening block, the second abutting member is rotated and abuts against the connecting block, so as to achieve the purpose of fastening the positioning mechanism and the axial sliding mechanism, which is simple and reliable in structure.

[0031] Compared with the prior art, the present application has the following beneficial effects:

[0032] 1、The center shafts of the sliding assembly and the arc-shaped cantilever are coincided with the center shaft of the height scale, the height scale is driven to slide along the base in the circumferential direction to be angularly deflected, and further the sliding assembly is driven to slide along the arc-shaped cantilever in the circumferential direction and be angularly deflected in the opposite direction, so that the interference of the height scale to the positioning hole sleeve is avoided, the position to be drilled is determined through the positioning hole sleeve, the circumferential drilling of the workpiece to be drilled is realized, the drilling precision is high, different workpieces can be drilled, the universality is strong, the application range is wide, and the drilling efficiency is greatly improved.

[0033] 2、The present application can be used for circumferential drilling of different sizes of ring-shaped structures or arc-shaped structures, and has a wide application range.

[0034] 3、The positioning hole sleeve of the present application is used for positioning the position to be drilled, and then a drill is inserted into the positioning hole sleeve to perform drilling operation, and the positioning hole sleeve and the arc-shaped positioning plate are detachably connected, since the positioning hole sleeve is abraded and loosened after long-time drilling operation, the detachable connection facilitates replacement of the positioning hole sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structural schematic view of a support in the prior art;

[0036] Figure 2 It is a structural schematic view of a conventional drilling tool for a positioning hole of a support;

[0037] Figure 3 It is a structural schematic view of an arc-shaped drilling tool;

[0038] Figure 4 Fig. 4 is a top view of the axial sliding mechanism and the fastening assembly;

[0039] Figure 5 Fig. 5 is a structural schematic view of the axial sliding mechanism and the fastening assembly;

[0040] Figure 6 Fig. 6 is a structural schematic view of the positioning mechanism;

[0041] Figure 7 Fig. 7 is a top view of the positioning mechanism;

[0042] Figure 8 Fig. 8 is a side view of the positioning mechanism;

[0043] Figure 9 Fig. 9 is a structural schematic view of the sliding assembly and the locking piece.

[0044] In the figure: 1 - base, 11 - sliding groove, 12 - first positioning hole, 13 - second positioning hole, 2 - height scale, 21 - second sliding block, 3 - axial sliding mechanism, 31 - axial sliding block, 32 - connecting block, 33 - sliding cavity, 34 - first abutting piece, 4 - fastening assembly, 41 - fastening ring, 42 - second abutting piece, 5 - arc-shaped cantilever, 51 - arc-shaped connecting section, 511 - through groove, 512 - fastening block, 52 - arc-shaped sliding section, 521 - T-shaped sliding groove, 5211 - T-shaped tail, 5212 - T-shaped head, 6 - sliding assembly, 61 - arc-shaped connecting plate, 611 - first sliding block, 612 - screw rod, 62 - arc-shaped positioning plate, 63 - straight plate, 64 - mounting cavity, 7 - locking piece, 8 - positioning hole sleeve. DETAILED DESCRIPTION

[0045] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] As shown in Figures 3 to 5 Fig. 1, an arc surface drilling tool includes a base 1, a height scale 2 arranged on the base 1 and sliding along the circumference of the base 1, and an axial sliding mechanism 3 and a positioning mechanism respectively slidingly arranged on the height scale 2, wherein the axial sliding mechanism 3 is connected with the positioning mechanism through a fastening assembly 4. The base 1 is provided with a sliding groove 11 in the circumference, and the base 1 is provided with a first positioning hole 12 and a second positioning hole 13. The bottom of the height scale 2 is provided with a second sliding block 21 slidingly matched with the sliding groove 11. The central axis of the height scale 2 coincides with the central axis of the sliding groove 11 on the base 1.

[0047] The fastening assembly 4 is used to connect the positioning mechanism and the axial sliding mechanism 3, so that the height of the positioning mechanism can be adjusted when the axial sliding mechanism 3 is driven to slide up and down along the height ruler 2, and the axial sliding mechanism 3 comprises an axial sliding block 31 and a connecting block 32 arranged on the outer wall of the axial sliding block 31, the axial sliding block 31 is provided with a sliding cavity 33 matched with the size of the height ruler 2, and the axial sliding block 31 is provided with a first abutting member 34 abutting against the outer wall of the height ruler 2. The sliding cavity 33 on the axial sliding block 31 is matched with the size of the height ruler 2, so that the axial sliding block 31 can smoothly slide along the height ruler 2. In the embodiment, the axial sliding block 31 is provided with a threaded hole on the side wall away from the positioning mechanism, and the first abutting member 34 is an abutting screw. The abutting screw passes through the threaded hole and abuts against the outer wall of the height ruler 2, so that the axial sliding mechanism 3 is limited and fixed on the height ruler 2. In the embodiment, the first abutting member 34 is provided as two, and in other embodiments of the application, the first abutting member 34 can be provided as three, four or the like. The number of threaded holes on the axial sliding block 31 corresponds to the number of first abutting members 34, which is mainly used to strengthen the fixing effect of the axial sliding block 31 and the height ruler 2, and is not limited here.

[0048] Specifically, the positioning mechanism comprises an arc-shaped cantilever 5 in sliding cooperation with the height ruler 2 and a sliding assembly 6 arranged on the outer side of the arc-shaped cantilever 5 and in sliding cooperation with the arc-shaped cantilever 5, the sliding assembly 6 is connected with the arc-shaped cantilever 5 through a locking member 7, and the sliding assembly 6 is provided with a positioning hole sleeve 8 corresponding to the side wall of the height ruler 2 and used for positioning; the center axis of the sliding assembly 6 and the center axis of the arc-shaped cantilever 5 respectively coincide with the center axis of the height ruler 2, the height ruler 2 slides along the base 1 to realize angular deflection, the sliding assembly 6 slides along the arc-shaped cantilever 5 to realize angular deflection in the opposite direction, so that the positioning hole sleeve 8 corresponds to the position to be drilled. The sliding assembly 6 slides along the arc-shaped cantilever 5 to adjust the deflection position of the sliding assembly 6 on the arc-shaped cantilever 5, and finally adjust the deflection position of the positioning hole sleeve 8. When the positioning hole sleeve 8 corresponds to the position to be drilled of the workpiece to be drilled, the sliding assembly 6 and the arc-shaped cantilever 5 are connected and locked through the locking member 7, and then an external drill is inserted into the positioning hole sleeve 8, so that the workpiece to be drilled is drilled. The center axis of the height ruler 2 coincides with the center axis of the sliding groove 11 on the base 1, and the center axis of the sliding assembly 6 and the center axis of the arc-shaped cantilever 5 both coincide with the center axis of the height ruler 2, so that the angular deflection of the height ruler 2 along the base 1 and the angular deflection of the sliding assembly 6 along the arc-shaped cantilever 5 in the opposite direction are on the same center axis, and interference of the height ruler 2 to the positioning hole sleeve 8 is avoided, and circumferential drilling of the workpiece to be drilled is realized.

[0049] As Figures 4 to 8As shown, in the embodiment, the arc-shaped cantilever 5 is located below the axial sliding mechanism 3. The arc-shaped cantilever 5 comprises an arc-shaped connecting section 51 and an arc-shaped sliding section 52 connected in sequence, the arc-shaped connecting section 51 is connected with the axial sliding mechanism 3 through the fastening assembly 4, the sliding assembly 6 slides along the arc-shaped sliding section 52 in the circumferential direction and is connected with the locking piece 7. Wherein, the arc-shaped connecting section 51 and the arc-shaped sliding section 52 are integrally formed. The arc-shaped connecting section 51 is provided with a through slot 511 which is in sliding fit with the height gauge 2, the side wall of the through slot 511 close to the arc-shaped sliding section 52 is connected with a fastening block 512, the slot diameter of the through slot 511 is greater than the diameter of the height gauge 2, so as to facilitate the sliding of the arc-shaped cantilever 5 along the height gauge 2.

[0050] The fastening assembly 4 comprises a fastening ring 41 and a second abutting piece 42, the fastening ring 41 is sleeved on the outer wall of the connecting block 32 and the fastening block 512 and is abutted by the second abutting piece 42. In the embodiment, the top of the fastening ring 41 is provided with a threaded hole, the second abutting piece 42 is a screw, the screw is rotated and taken out, the fastening ring 41 is sleeved on the connecting block 32, the fastening ring 41 is a rectangular structure, the connecting block 32 and the fastening block 512 are both rectangular structures, and the cross-sectional area of the fastening ring 41 is greater than the sum of the cross-sectional area of the connecting block 32 and the cross-sectional area of the fastening block 512, therefore, when the positioning mechanism slides along the height gauge 2 to contact the axial sliding mechanism 3, the top of the fastening block 512 contacts the bottom of the connecting block 32, which drives the fastening ring 41 to slide along the fastening block 512, when the fastening ring 41 sleeves the connecting block 32 and the fastening block 512, the second abutting piece 42 is passed through the threaded hole on the fastening ring 41 and abuts against the top wall of the connecting block 32, which achieves the purpose of fastening the axial sliding mechanism 3 and the positioning mechanism. In other embodiments of the application, the fastening ring 41 can adopt a circular ring structure, and the corresponding connecting block 32 and the fastening block 512 can adopt a semicircular structure, which is not limited specifically herein.

[0051] As Figure 9As shown, the sliding assembly 6 comprises an arc-shaped connecting plate 61, an arc-shaped positioning plate 62 coaxial with the arc-shaped connecting plate 61, and a straight plate 63 connecting the arc-shaped connecting plate 61 and the arc-shaped positioning plate 62, the two ends of the straight plate 63 are perpendicular to the arc-shaped connecting plate 61 and the arc-shaped positioning plate 62 respectively, a mounting cavity 64 is formed between the straight plate 63 and the arc-shaped positioning plate 62, the positioning hole sleeve 8 is detachably connected to the arc-shaped positioning plate 62, and the straight plate 63 is integrally formed with the arc-shaped connecting plate 61 and the arc-shaped positioning plate 62; the mounting cavity 64 is used for mounting the positioning hole sleeve 8, in the embodiment, the arc-shaped positioning plate 62 is provided with a positioning hole, the positioning hole sleeve 8 is screwed into the positioning hole, or the positioning hole sleeve 8 is fixed on the arc-shaped positioning plate 62 by bolts, or is directly mounted in the positioning hole by transition, interference fit and other ways. The positioning hole sleeve 8 has a circular hole, which is convenient for the external drill to pass through, so that drilling operation is performed through the drill. Because long-time drilling operation will cause wear and loosening of the positioning hole sleeve 8, the detachable connection mode is convenient for replacement of the positioning hole sleeve 8.

[0052] The arc-shaped connecting plate 61 is in sliding fit with the arc-shaped sliding segment 52 and is connected with the locking piece 7. Specifically, the central axis of the arc-shaped connecting plate 61 and the central axis of the arc-shaped positioning plate 62 coincide with the central axis of the arc-shaped sliding segment 52 respectively, so that when the arc-shaped connecting plate 61 is pushed to slide along the circumference of the arc-shaped sliding segment 52, the arc-shaped positioning plate 62 can rotate and deflect by an angle along the circumference of the arc-shaped sliding segment 52, thereby ensuring the circumferential deflection angle of the positioning hole sleeve 8.

[0053] The arc-shaped connecting plate 61 is in sliding fit with the arc-shaped sliding segment 52 and is connected with the locking piece 7. The arc-shaped sliding segment 52 is provided with a T-shaped sliding groove 521 along the circumference; the inner side of the arc-shaped connecting plate 61 is provided with a first sliding block 611 in sliding fit with a T-shaped tail portion 5211 of the T-shaped sliding groove 521, a screw rod 612 is connected to the side wall of the arc-shaped connecting plate 61 away from the first sliding block 611, the inner side of the arc-shaped connecting plate 61 contacts the outer side of the arc-shaped sliding segment 52, and the locking piece 7 is located in a T-shaped head portion 5212 of the T-shaped sliding groove 521 and is connected with the screw rod 612. In the embodiment, the locking piece 7 is a special-shaped nut, the screw rod 612 matches the T-shaped tail portion 5211, and the first sliding block 611 matches the T-shaped tail portion 5211; the screw rod 612 passes through the T-shaped tail portion 5211 of the T-shaped sliding groove 521 and extends into the T-shaped head portion 5212, the special-shaped nut is threadedly connected with the screw rod 612, and when the special-shaped nut is rotated to contact the bottom wall of the T-shaped head portion 5212, the arc-shaped connecting plate 61 and the arc-shaped sliding segment 52 are locked. In the embodiment, the position of the positioning hole sleeve 8 on the arc-shaped positioning plate 62 is staggered with the position of the arc-shaped cantilever 5, so that the arc-shaped cantilever 5 does not interfere with the positioning hole sleeve 8, and drilling operation is facilitated.

[0054] As Figure 3As shown, the base 1 is provided with a first angle scale at the side position close to the sliding groove 11, the first positioning hole 12 corresponds to the 0 scale line of the first angle scale; the arc-shaped sliding section 52 is provided with a second angle scale, the extension direction of the second angle scale is opposite to that of the first angle scale, the 0 scale line of the second angle scale corresponds to the straight plate 63; the first angle scale and the second angle scale facilitate the staff to confirm the deflection angle of the height scale 2 and the sliding assembly 6; since the second sliding block 21 corresponds to the 0 scale line of the first angle scale and the straight plate 63 corresponds to the 0 scale line of the second angle scale, the central axis of the positioning hole sleeve 8, the central axis of the first positioning hole 12 and one side wall of the height scale 2 are located on the same plane, and specifically, the side wall of the height scale 2 close to the positioning mechanism is located on the same plane. In the embodiment, the screw is passed through the first positioning hole 12 and the second positioning hole 13 on the base 1 and connected with the flange plate, according to the design, it can be obtained that the angle between the first positioning hole 12 and the position to be punched is A, the deflection angle of the height scale 2 along the base 1 is B, the deflection angle of the sliding assembly 6 along the arc-shaped cantilever 5 in the opposite direction is C, and B-A=C. The positioning hole sleeve 8 corresponds to the position to be drilled, and then the external drill is inserted into the positioning hole sleeve 8, so that the circumferential drilling of the workpiece to be drilled is realized. Since the second sliding block 21 corresponds to the 0 scale line of the first angle scale and the straight plate 63 corresponds to the 0 scale line of the second angle scale, the positioning hole sleeve 8 is located on the same plane with the first positioning hole 12 and the side wall of the height scale 2 respectively, at this time, the height scale 2 will shield the positioning hole sleeve 8; therefore, the height scale 2 needs to be deflected by a certain angle along the base 1, and the sliding assembly 6 needs to be deflected by a certain angle in the opposite direction along the arc-shaped cantilever 5, so that the positioning hole sleeve 8 is exposed, and then the subsequent drilling operation is facilitated.

[0055] The using method of the arc surface drilling tool is as follows:

[0056] (1) After the skin installation of the large-diameter cylindrical riveting part is completed, the first positioning hole 12 and the second positioning hole 13 of the base 1 are connected with the flange plate of the riveting part through threads respectively, and the central axis of the sliding groove 11 on the base 1 is coincided with the central axis of the skin;

[0057] (2) The fastening assembly 4 is pre-installed on the axial sliding mechanism 3, and then the base 1, the height scale 2, the axial sliding mechanism 3 and the positioning mechanism are assembled;

[0058] The axial sliding block 31 of the axial sliding mechanism 3 is driven and the height scale 2 is clamped by the first clamping part 34; the fastening ring 41 is installed on the connecting block 32, the arc-shaped connecting section 51 of the arc-shaped cantilever 5 is driven to slide along the height scale 2, when the top of the fastening block 512 in the arc-shaped connecting section 51 contacts with the bottom of the connecting block 32, the connecting block 32 and the fastening block 512 are sleeved by pushing the fastening ring 41, then the fastening ring 41 and the connecting block 32 are clamped by the second clamping part 42, so that the positioning mechanism and the axial sliding mechanism 3 are fastened.

[0059] (3) When the second slider 21 corresponds to the 0 scale line of the first angle scale, and the straight plate 63 corresponds to the 0 scale line of the second angle scale, at this time, the central axis of the positioning hole sleeve 8 and the central axis of the first positioning hole 12 are located in the same plane;

[0060] (4) According to the design, the angle between the first positioning hole 12 and the position to be drilled is A, the height gauge 2 is driven to slide along the base 1 and to be angularly deflected, at this time, the positioning mechanism as a whole is angularly deflected along with the height gauge 2, the deflection angle of the height gauge 2 along the base 1 is B, so that the deflection angle C of the sliding assembly 6 in the opposite direction of the arc-shaped cantilever 5 can be obtained, wherein B-A=C;

[0061] (5) Loosen the locking piece 7, drive the first slider 611 of the arc-shaped connecting plate 61 to slide on the T-shaped sliding groove 521 on the arc-shaped sliding section 52 by the above-mentioned deflection angle C, then rotate the locking piece 7 and lock the sliding assembly 6 and the arc-shaped cantilever 5, finally adjust the height of the axial slider 31 on the height gauge 2, so that the central axis of the positioning hole sleeve 8 is aligned with the drilling position, then insert the drill bit into the inner circle of the positioning hole sleeve 8, and the contact point between the top of the drill bit and the skin is the drilling position.

[0062] Through the above steps, the circumferential drilling of the skin is realized, the drilling precision is improved, the drilling efficiency is improved, the drilling of skins of different sizes can be realized, continuous drilling can be realized, components with arc surfaces can also be drilled, and the application range is wide.

[0063] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A drilling fixture for curved surfaces, characterized in that, include: The base (1), the height gauge (2) disposed on the base (1) and sliding along the circumference of the base (1), and the axial sliding mechanism (3) and the positioning mechanism respectively slidably disposed on the height gauge (2), wherein the axial sliding mechanism (3) is connected to the positioning mechanism through a fastening assembly (4); The positioning mechanism includes an arc-shaped cantilever (5) that slides with the height gauge (2) and a sliding component (6) disposed on the outside of the arc-shaped cantilever (5) and slidingly engaged with the arc-shaped cantilever (5). The sliding component (6) is connected to the arc-shaped cantilever (5) through a locking member (7). The sliding component (6) is provided with a positioning hole sleeve (8) that corresponds to the side wall of the height gauge (2) and is used for positioning. The central axis of the sliding component (6) and the central axis of the arc cantilever (5) are respectively aligned with the central axis of the height gauge (2). The height gauge (2) slides circumferentially along the base (1) to achieve angular deflection. The sliding component (6) slides circumferentially along the arc cantilever (5) and deflects angularly in the opposite direction, so that the positioning hole sleeve (8) corresponds to the position of the hole to be drilled.

2. The arc-shaped drilling fixture according to claim 1, characterized in that, The arc-shaped cantilever (5) includes an arc-shaped connecting section (51) and an arc-shaped sliding section (52) connected in sequence. The arc-shaped connecting section (51) is connected to the axial sliding mechanism (3) through the fastening assembly (4). The sliding assembly (6) slides circumferentially along the arc-shaped sliding section (52) and is connected to the locking member (7).

3. The arc-shaped drilling fixture according to claim 2, characterized in that, The sliding component (6) includes an arc-shaped connecting plate (61), an arc-shaped positioning plate (62) coaxial with the arc-shaped connecting plate (61), and a straight plate (63) connecting the arc-shaped connecting plate (61) and the arc-shaped positioning plate (62). The two ends of the straight plate (63) are perpendicular to the arc-shaped connecting plate (61) and the arc-shaped positioning plate (62), respectively. The arc-shaped connecting plate (61) slides with the arc-shaped sliding section (52) and is connected to the locking member (7). The positioning hole sleeve (8) is detachably connected to the arc-shaped positioning plate (62).

4. The arc-shaped drilling fixture according to claim 3, characterized in that, The arc-shaped sliding section (52) is provided with a T-shaped through groove (521) in the circumferential direction; The inner side of the arc-shaped connecting plate (61) is provided with a first slider (611) that slides in cooperation with the T-shaped tail (5211) of the T-shaped through groove (521). The first slider (611) is connected to a screw (612) on the side wall away from the arc-shaped connecting plate (61). The inner side of the arc-shaped connecting plate (61) contacts the outer side of the arc-shaped sliding section (52). The locking member (7) is located in the T-shaped head (5212) of the T-shaped through groove (521) and is connected to the screw (612).

5. The arc-shaped drilling fixture according to claim 3, characterized in that, The arc-shaped connecting section (51) and the arc-shaped sliding section (52) are integrally formed, and the straight plate (63) is integrally formed with the arc-shaped connecting plate (61) and the arc-shaped positioning plate (62).

6. The arc-shaped drilling fixture according to any one of claims 3 to 5, characterized in that, The base (1) has a circumferential groove (11), and the bottom of the height gauge (2) is provided with a second slider (21) that slides in cooperation with the groove (11). The base (1) has a first angular scale near the side of the groove (11), and the base (1) has a first positioning hole (12) and a second positioning hole (13). The first positioning hole (12) corresponds to the 0 mark line of the first angular scale.

7. The arc-shaped drilling fixture according to claim 6, characterized in that, The arc-shaped sliding section (52) is provided with a second angular scale, the extension direction of the second angular scale is opposite to the extension direction of the first angular scale, and the 0 scale line of the second angular scale corresponds to the straight plate (63); When the second slider (21) corresponds to the 0 mark of the first angular scale and the straight plate (63) corresponds to the 0 mark of the second angular scale, the central axis of the positioning hole sleeve (8), the central axis of the first positioning hole (12), and one side of the height gauge (2) are located on the same plane.

8. The arc-shaped drilling fixture according to any one of claims 2 to 5, characterized in that, The axial sliding mechanism (3) includes an axial slider (31) and a connecting block (32) disposed on the outer wall of the axial slider (31). The axial slider (31) has a sliding cavity (33) that matches the size of the height gauge (2). The axial slider (31) is provided with a first abutting member (34) that abuts against the outer wall of the height gauge (2).

9. The arc-shaped drilling fixture according to claim 8, characterized in that, The arc-shaped connecting section (51) is provided with a through groove (511) that slides with the height gauge (2). A fastening block (512) is connected to the side wall of the through groove (511) near the arc-shaped sliding section (52). The groove diameter of the through groove (511) is larger than the diameter of the height gauge (2).

10. The arc-shaped drilling fixture according to claim 9, characterized in that, The fastening assembly (4) includes a fastening ring (41) and a second abutting member (42). The fastening ring (41) is sleeved on the outer wall of the connecting block (32) and the fastening block (512) and is abutted by the second abutting member (42).

Images