Multi-angle composite profile part thread hole machining tooling and system

Abstract

The application discloses a multi-angle composite profile part thread hole machining tool and system, wherein the multi-angle composite profile part thread hole machining tool comprises a support plate and a tool body; the support plate is a flat plate; the tool body comprises oppositely arranged first and second positioning surfaces; in the state that the tool body is connected with a part to be machined, the positioning inclined surfaces on the first positioning surface correspond to the to-be-machined inclined surfaces on the second machining surface one by one and are parallel to the to-be-machined inclined surfaces on the second machining surface, and the positioning inclined surfaces on the second positioning surface correspond to the to-be-machined inclined surfaces on the first machining surface one by one and are parallel to the to-be-machined inclined surfaces on the first machining surface, so that when any one of the positioning inclined surfaces on the first and second positioning surfaces is attached to the top surface of the support plate, the to-be-machined inclined surface corresponding to the positioning inclined surface is parallel to the top surface of the support plate; when hole machining is performed each time, the cutter only needs to be perpendicular to the top surface of the support plate; the positioning reference is unified as the top surface of the support plate, positioning is more convenient and fast, the machining difficulty is reduced, and the machining quality and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of machining, and particularly relates to a threaded hole machining tool and system for a multi-angle composite profile part. BACKGROUND

[0002] There are structural parts with multi-angle composite profiles on aerospace products, and a large number of tiny threaded holes (such as M2 threaded holes) need to be machined on the composite profile of the part. Since the M2 threaded hole has a small diameter, if a multi-axis numerical control device is used for machining, the tool is prone to breaking, and the quality stability is poor; if a screw worker is used for tapping, since the M2 threaded hole is located on the composite profile of the part, the screw worker cannot use the guide sleeve to position and machine, resulting in great difficulty in machining and low machining efficiency. SUMMARY

[0003] To solve the technical problems in the prior art that the threaded hole is prone to breaking when machined by a multi-axis numerical control device, and the quality stability is poor, and the threaded hole is difficult to machine and the machining efficiency is low when machined by a screw worker, the application provides a threaded hole machining tool for a multi-angle composite profile part.

[0004] In a first aspect, the application provides a threaded hole machining tool for a multi-angle composite profile part, which is used to clamp a part to be machined, the part to be machined comprising a first machining surface and a second machining surface arranged opposite to each other, and the threaded hole machining tool for the multi-angle composite profile part comprising:

[0005] a support plate, which is a flat plate;

[0006] a tool body connected with the part to be machined, the tool body comprising a first positioning surface and a second positioning surface arranged opposite to each other, the first positioning surface and the first machining surface being located on the same side in the state that the tool body is connected with the part to be machined, the positioning inclined surfaces on the first positioning surface corresponding to the inclined surfaces to be machined on the second machining surface one by one and parallel to each other, and the positioning inclined surfaces on the second positioning surface corresponding to the inclined surfaces to be machined on the first machining surface one by one and parallel to each other, so that when any one of the positioning inclined surfaces on the first positioning surface and the second positioning surface is in contact with the top surface of the support plate, the inclined surface to be machined corresponding to the positioning inclined surface is parallel to the top surface of the support plate, facilitating hole machining.

[0007] In some optional embodiments, the first machining surface comprises a first to-be-machined bevel and a second to-be-machined bevel, and the second machining surface comprises a third to-be-machined bevel and a fourth to-be-machined bevel; the first positioning surface comprises a first positioning bevel and a second positioning bevel, and the second positioning surface comprises a third positioning bevel and a fourth positioning bevel; in the state where the tooling body is connected with the to-be-machined part, the first to-be-machined bevel is parallel to the third positioning bevel, the second to-be-machined bevel is parallel to the fourth positioning bevel, the third to-be-machined bevel is parallel to the first positioning bevel, and the fourth to-be-machined bevel is parallel to the second positioning bevel.

[0008] In some optional embodiments, the tooling body further comprises at least one first positioning hole and at least one second positioning hole, the first positioning hole penetrates through the first positioning bevel and the third positioning bevel, and the second positioning hole penetrates through the second positioning bevel and the fourth positioning bevel; the support plate is provided with two sets of mounting holes, the two sets of mounting holes are mirror-symmetrical, and each set of mounting holes comprises a first mounting hole matched with the first positioning hole and a second mounting hole matched with the second positioning hole.

[0009] In some optional embodiments, the to-be-machined part further comprises a positioning groove, and the first machining surface and the second machining surface are respectively located on two sides of the positioning groove; the tooling body further comprises a positioning protrusion, the positioning protrusion is nestedly installed in the positioning groove, and the first positioning surface and the second positioning surface are respectively located on two sides of the positioning protrusion.

[0010] In some optional embodiments, one end of the positioning protrusion is provided with a limiting block, and the limiting block is used for abutting against the to-be-machined part to limit the to-be-machined part.

[0011] In some optional embodiments, the positioning groove comprises a positioning groove body and two guide portions, the two guide portions extend inwardly along the inner wall of the positioning groove body, the two guide portions respectively abut against two side walls of the positioning protrusion, and the bottom surface of the positioning groove body abuts against the top surface of the positioning protrusion.

[0012] In some optional embodiments, the bottom surface of the positioning groove body is provided with a first connecting hole, the top surface of the positioning protrusion is provided with a second connecting hole, and the first connecting hole and the second connecting hole are coaxial when the limiting block abuts against the to-be-machined part.

[0013] In some optional embodiments, the height of the positioning protrusion is greater than the depth of the positioning groove.

[0014] In some optional embodiments, four anti-fooling holes are arranged on the support plate, when the positioning slope of the first positioning surface is attached to the top surface of the support plate, the two corners of the first positioning surface away from the part to be machined fall within the range of two anti-fooling holes among the four anti-fooling holes; when the positioning slope of the second positioning surface is attached to the top surface of the support plate, the two corners of the second positioning surface away from the part to be machined fall within the range of the other two anti-fooling holes among the four anti-fooling holes.

[0015] In a second aspect of the present application, a threaded hole machining system for a multi-angle composite profile part is provided, comprising a hole machining device and the threaded hole machining tool for the multi-angle composite profile part, and the tool feed direction of the hole machining device is perpendicular to the top surface of the support plate.

[0016] The threaded hole machining tool for a multi-angle composite profile part provided according to one or more embodiments of the present application has the following technical effects:

[0017] By means of the one-to-one correspondence between the positioning slope on the first positioning surface and the machined slope on the second machining surface, and the one-to-one correspondence between the positioning slope on the second positioning surface and the machined slope on the first machining surface, when any one of the positioning slopes on the first positioning surface and the second positioning surface is attached to the top surface of the support plate, the machined slope corresponding to the positioning slope is parallel to the top surface of the support plate, and when machining the hole, the tool only needs to be perpendicular to the top surface of the support plate, the positioning reference is unified as the top surface of the support plate, the positioning is more convenient and fast, the machining difficulty is reduced, and the machining quality and efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structural schematic diagram of the threaded hole machining tool for a multi-angle composite profile part according to one or more embodiments of the present application is shown;

[0019] Figure 2 The structural schematic diagram of the part to be machined of the threaded hole machining tool for a multi-angle composite profile part according to one or more embodiments of the present application is shown Figure One ;

[0020] Figure 3 The structural schematic diagram of the part to be machined of the threaded hole machining tool for a multi-angle composite profile part according to one or more embodiments of the present application is shown Figure Two ;

[0021] Figure 4 The structural schematic diagram of the support plate of the threaded hole machining tool for a multi-angle composite profile part according to one or more embodiments of the present application is shown;

[0022] Figure 5Structural diagram of a tool body of a thread hole machining tool for a multi-angle composite profile part Figure One .

[0023] Figure 6 Structural diagram of a tool body of a thread hole machining tool for a multi-angle composite profile part Figure Two .

[0024] Legend: 100 - part to be machined; 110 - first machining surface, 111 - first inclined surface to be machined, 112 - second inclined surface to be machined; 120 - second machining surface, 121 - third inclined surface to be machined, 122 - fourth inclined surface to be machined; 130 - positioning groove, 131 - positioning groove body, 1311 - first connecting hole, 132 - guide portion;

[0025] 200 - support plate, 210 - mounting hole group, 211 - first mounting hole, 212 - second mounting hole, 220 - fool-proof hole;

[0026] 300 - tool body; 310 - first positioning surface, 311 - first inclined positioning surface, 312 - second inclined positioning surface; 320 - second positioning surface, 321 - third inclined positioning surface, 322 - fourth inclined positioning surface; 330 - first positioning hole; 340 - second positioning hole; 350 - positioning protrusion, 351 - second connecting hole; 360 - limiting block. DETAILED DESCRIPTION

[0027] In order for those skilled in the art to which the present application belongs to more clearly understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than 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.

[0028] Referring to Figures 1-6 , the first aspect embodiment of the present application provides a thread hole machining tool for a multi-angle composite profile part, used for clamping a part to be machined 100, the part to be machined 100 comprising a first machining surface 110 and a second machining surface 120 arranged opposite to each other, the thread hole machining tool comprising a support plate 200 and a tool body 300, wherein:

[0029] The support plate 200 is a flat plate;

[0030] The tool body 300 is connected with the part 100 to be machined, the tool body 300 comprises a first positioning surface 310 and a second positioning surface 320 arranged oppositely, the first positioning surface 310 and the first machining surface 110 are located on the same side in the state that the tool body 300 is connected with the part 100 to be machined, the positioning inclined surfaces on the first positioning surface 310 correspond to the inclined surfaces to be machined on the second machining surface in parallel one by one, and the positioning inclined surfaces on the second positioning surface 320 correspond to the inclined surfaces to be machined on the first machining surface 110 in parallel one by one, so that when any one of the positioning inclined surfaces on the first positioning surface 310 and the second positioning surface 320 is attached to the top surface of the support plate 200, the inclined surface to be machined corresponding to the positioning inclined surface is parallel to the top surface of the support plate 200, so as to facilitate hole machining.

[0031] The multi-angle composite surface part thread hole machining tool provided by the embodiment of the application is characterized in that the positioning inclined surfaces on the first positioning surface 310 correspond to the inclined surfaces to be machined on the second machining surface in parallel one by one, and the positioning inclined surfaces on the second positioning surface 320 correspond to the inclined surfaces to be machined on the first machining surface 110 in parallel one by one, so that when any one of the positioning inclined surfaces on the first positioning surface 310 and the second positioning surface 320 is attached to the top surface of the support plate 200, the inclined surface to be machined corresponding to the positioning inclined surface is parallel to the top surface of the support plate 200, so as to facilitate hole machining.

[0032] In some optional embodiments, the first machining surface 110 comprises a first to-be-machined bevel 111 and a second to-be-machined bevel 112, and the second machining surface 120 comprises a third to-be-machined bevel 121 and a fourth to-be-machined bevel 122; the first positioning surface 310 comprises a first positioning bevel 311 and a second positioning bevel 312, and the second positioning surface 320 comprises a third positioning bevel 321 and a fourth positioning bevel 322; in the state where the tooling body 300 is connected with the to-be-machined part 100, the first to-be-machined bevel 111 is parallel to the third positioning bevel 321, the second to-be-machined bevel 112 is parallel to the fourth positioning bevel 322, the third to-be-machined bevel 121 is parallel to the first positioning bevel 311, and the fourth to-be-machined bevel 122 is parallel to the second positioning bevel 312. By abutting the first positioning bevel 311 to the top surface of the support plate 200, the third to-be-machined bevel 121 is parallel to the top surface of the support plate 200, so that the third to-be-machined bevel 121 can be drilled and tapped to complete the machining of the threaded hole; by abutting the second positioning bevel 312 to the top surface of the support plate 200, the fourth to-be-machined bevel 122 is parallel to the top surface of the support plate 200, so that the fourth to-be-machined bevel 122 can be machined; by abutting the third positioning bevel 321 to the top surface of the support plate 200, the first to-be-machined bevel 111 is parallel to the top surface of the support plate 200, so that the first to-be-machined bevel 111 can be machined; by abutting the fourth positioning bevel 322 to the top surface of the support plate 200, the second to-be-machined bevel 112 is parallel to the top surface of the support plate 200, so that the second to-be-machined bevel 112 can be machined.

[0033] In some optional embodiments, the tooling body 300 further comprises at least one first positioning hole 330 and at least one second positioning hole 340, the first positioning hole 330 penetrates through the first positioning bevel 311 and the third positioning bevel 321, and the second positioning hole 340 penetrates through the second positioning bevel 312 and the fourth positioning bevel 322; the support plate 200 is provided with two mounting hole groups 210, the two mounting hole groups 210 are mirror-symmetrical, and each mounting hole group 210 comprises a first mounting hole 211 matched with the first positioning hole 330 and a second mounting hole 212 matched with the second positioning hole 340. As Figure 4As shown, the two mounting hole groups 210 are mirror symmetrical, so that the first positioning surface 310 and the second positioning surface 320 can also be positioned when the tool body 300 is turned over by 180 degrees, improving the versatility of the support plate 200. The first positioning hole 330 is provided with two, and the second positioning hole 340 is provided with two, so that when the first positioning hole 330 is connected with the first mounting hole 211 through a bolt, and the second positioning hole 340 is connected with the second mounting hole 212 through a bolt, the tool body 300 can be more closely attached to the top surface of the support plate 200, improving the stability and reliability of the device.

[0034] In some optional embodiments, the part to be processed 100 further comprises a positioning groove 130, and the first processing surface 110 and the second processing surface 120 are respectively located on both sides of the positioning groove 130; the tool body 300 further comprises a positioning protrusion 350, and the positioning protrusion 350 is nestedly installed in the positioning groove 130, and the first positioning surface 310 and the second positioning surface 320 are respectively located on both sides of the positioning protrusion 350. By nestingly installing the positioning protrusion 350 in the positioning groove 130, the part to be processed 100 is clamped on the tool body 300, realizing the relative fixation of the part to be processed 100 and the tool body 300, so that the part to be processed 100 can be positioned by the positioning of the tool body 300, to facilitate the processing of the first processing surface 110 and the second processing surface 120 of the part to be processed 100, improving the reliability of the device.

[0035] In some optional embodiments, one end of the positioning protrusion 350 is provided with a limiting block 360, and the limiting block 360 is used for abutting against the part to be processed 100 to limit the part to be processed 100. Considering that the right end width of the positioning groove 130 of the part to be processed 100 is greater than the left end width, the limiting block 360 is arranged at the right end of the positioning protrusion 350, and the part to be processed 100 is positioned by the limiting block 360 abutting against the part to be processed 100, so that the part to be processed 100 is limited along the length direction of the positioning protrusion 350, and the part to be processed 100 is also positioned.

[0036] In some optional embodiments, the positioning groove 130 comprises a positioning groove body 131 and two guide portions 132, the two guide portions 132 extend inwardly along the inner wall of the positioning groove body 131, and the two guide portions 132 respectively abut against the two side walls of the positioning protrusion 350, and the bottom surface of the positioning groove body 131 abuts against the top surface of the positioning protrusion 350. The two guide portions 132 respectively abut against the two side walls of the positioning protrusion 350, so that the connection between the positioning protrusion 350 and the positioning groove body 131 is guided, and the width direction of the workpiece 100 along the positioning protrusion 350 is limited. Under the action of gravity of the workpiece 100, the bottom surface of the positioning groove body 131 abuts against the top surface of the positioning protrusion 350, so that the workpiece 100 is preliminarily limited in the direction perpendicular to the top surface of the positioning protrusion 350, the relative fixation between the workpiece 100 and the tool body 300 is realized, and the stability and reliability of the device are improved.

[0037] In some optional embodiments, the bottom surface of the positioning groove body 131 is provided with a first connecting hole 1311, the top surface of the positioning protrusion 350 is provided with a second connecting hole 351, and the first connecting hole 1311 and the second connecting hole 351 are coaxial when the limiting block 360 abuts against the workpiece 100. When the limiting block 360 abuts against the workpiece 100, the first connecting hole 1311 and the second connecting hole 351 are coaxial. The first connecting hole 1311 and the second connecting hole 351 can be pin holes, a pin is inserted into the first connecting hole 1311 and the second connecting hole 351, the bottom surface of the positioning groove 130 and the top surface of the positioning protrusion 350 are connected, and the workpiece 100 is completely limited in the direction perpendicular to the top surface of the positioning protrusion 350. The first connecting hole 1311 and the second connecting hole 351 can also be threaded holes, a bolt is connected with the first connecting hole 1311 and the second connecting hole 351, the bottom surface of the positioning groove 130 and the top surface of the positioning protrusion 350 are connected, the workpiece 100 is completely limited in the direction perpendicular to the top surface of the positioning protrusion 350, the workpiece 100 is prevented from shaking during machining, the machining precision is improved, and the stability and reliability of the device are improved.

[0038] In some optional embodiments, the height of the positioning protrusion 350 is greater than the depth of the positioning groove 130. The height of the positioning protrusion 350 is greater than the depth of the positioning groove 130, so that there is a gap between the bottom surface of the positioning groove 130 and the bottom surface of the positioning protrusion 350, the contact area between the positioning groove 130 and the tool body 300 is reduced, the friction is reduced, the positioning groove 130 slides more smoothly on the positioning protrusion 350, the installation is facilitated, and the reliability of the device is improved.

[0039] In some optional embodiments, four anti-fooling holes 220 are arranged on the support plate 200, when the positioning inclined surface of the first positioning surface 310 is attached to the top surface of the support plate 200, the two corners of the first positioning surface 310 away from the part to be machined 100 respectively fall within the range of two anti-fooling holes 220 of the four anti-fooling holes 220; when the positioning inclined surface of the second positioning surface 320 is attached to the top surface of the support plate 200, the two corners of the second positioning surface 320 away from the part to be machined 100 respectively fall within the range of the other two anti-fooling holes 220 of the four anti-fooling holes 220. Through the arrangement of the anti-fooling holes 220, the positioning when the tool body 300 is installed on the top surface of the support plate 200 can be quickly performed, the tool body 300 is prevented from being placed upside down, the assembly efficiency of the device is improved, and thus the machining efficiency is improved.

[0040] The working principle of the multi-angle composite profile part threaded hole machining tool is as follows: the positioning protrusion 350 is nested and installed in the positioning groove 130, the limiting block 360 abuts against the part to be machined 100, the part to be machined 100 is limited in the length direction of the positioning protrusion 350, the first connecting hole 1311 and the second connecting hole 351 are connected through a pin hole or a bolt, the part to be machined 100 is limited in the direction perpendicular to the top surface of the positioning protrusion 350, the first positioning hole 330 is connected with the first mounting hole 211 through a bolt or the second positioning hole 340 is connected with the second mounting hole 212 through a bolt, so that the tool body 300 is attached to the top surface of the support plate 200; the first positioning inclined surface 311 is attached to the top surface of the support plate 200, and the third machined inclined surface 121 is machined; the second positioning inclined surface 312 is attached to the top surface of the support plate 200, and the fourth machined inclined surface 122 is machined; the third positioning inclined surface 321 is attached to the top surface of the support plate 200, and the first machined inclined surface 111 is machined; and the fourth positioning inclined surface 322 is attached to the top surface of the support plate 200, and the second machined inclined surface 112 is machined.

[0041] The second aspect embodiment of the present application provides a multi-angle composite profile part threaded hole machining system, which comprises a hole machining device and the multi-angle composite profile part threaded hole machining tool.

[0042] The multi-angle composite profile part threaded hole machining system provided in the embodiment only needs to make the tool feed direction of the hole machining device perpendicular to the top surface of the support plate 200 when performing hole machining each time, the positioning reference is unified as the top surface of the support plate 200, the positioning is relatively convenient and fast, the machining difficulty is reduced, and the machining quality and efficiency can be improved.

[0043] In the present application, unless specifically defined and limited otherwise, the "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "on", "above" and "under" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The "under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0045] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be broadly understood, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, can be internal connection of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically defined.

[0047] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A multi-angle composite profiled part threaded hole machining tool for clamping a part to be machined, the part to be machined comprising a first machining surface and a second machining surface arranged opposite to each other, characterized in that, The utility model provides a support plate, a tooling body and a support plate, and the tooling body is connected with a part to be machined, and the tooling body comprises a first positioning surface and a second positioning surface arranged oppositely, and the first positioning surface and the first machining surface are located on the same side in the state that the tooling body is connected with the part to be machined, the positioning inclined surface on the first positioning surface is parallel to the inclined surface to be machined on the second machining surface one by one, and the positioning inclined surface on the second positioning surface is parallel to the inclined surface to be machined on the first machining surface one by one, so that when any one of the first positioning surface and the second positioning surface is attached to the top surface of the support plate, the inclined surface to be machined corresponding to the positioning inclined surface is parallel to the top surface of the support plate, so that hole machining is facilitated. The first machining surface comprises a first inclined surface to be machined and a second inclined surface to be machined, the second machining surface comprises a third inclined surface to be machined and a fourth inclined surface to be machined, the first positioning surface comprises a first positioning inclined surface and a second positioning inclined surface, the second positioning surface comprises a third positioning inclined surface and a fourth positioning inclined surface, and the first inclined surface to be machined is parallel to the third positioning inclined surface, the second inclined surface to be machined is parallel to the fourth positioning inclined surface, the third inclined surface to be machined is parallel to the first positioning inclined surface, and the fourth inclined surface to be machined is parallel to the second positioning inclined surface in the state that the tooling body is connected with the part to be machined. The part to be machined further comprises a positioning groove, and the first machining surface and the second machining surface are located on two sides of the positioning groove respectively; the tooling body further comprises a positioning protrusion, the positioning protrusion is nestedly installed in the positioning groove, and the first positioning surface and the second positioning surface are located on two sides of the positioning protrusion respectively. One end of the positioning protrusion is provided with a limiting block, and the limiting block is used for abutting against the part to be machined to position the part to be machined. The positioning groove comprises a positioning groove body and two guide portions, the two guide portions extend inward along the inner wall of the positioning groove body, the two guide portions abut against two side walls of the positioning protrusion respectively, and the bottom surface of the positioning groove body abuts against the top surface of the positioning protrusion. The tooling body further comprises at least one first positioning hole and at least one second positioning hole, the first positioning hole penetrates through the first positioning inclined surface and the third positioning inclined surface, the second positioning hole penetrates through the second positioning inclined surface and the fourth positioning inclined surface, and the support plate is provided with two mounting hole groups, the two mounting hole groups are mirror symmetrical, and the mounting hole group comprises a first mounting hole matched with the first positioning hole and a second mounting hole matched with the second positioning hole. The bottom surface of the positioning groove body is provided with a first connecting hole, the top surface of the positioning protrusion is provided with a second connecting hole, and the first connecting hole and the second connecting hole are coaxial when the limiting block abuts against the part to be machined.

2. The multi-angle composite profiled part threaded hole machining tooling fixture according to claim 1, characterized in that, The height of the positioning protrusion is greater than the depth of the positioning groove.

3. The multi-angle composite profiled part threaded hole machining tooling fixture according to claim 1, characterized in that, ​ 4. The multi-angle composite profiled part threaded hole machining tooling fixture according to any one of claims 1-3, characterized in that, ​ 5. The multi-angle composite profiled part threaded hole machining tooling fixture according to any one of claims 1-3, characterized in that, The support plate is provided with four anti-stupid holes, when the positioning inclined surface of the first positioning surface is attached to the top surface of the support plate, the two corners of the first positioning surface away from the part to be machined respectively fall within the range of two anti-stupid holes of the four anti-stupid holes; when the positioning inclined surface of the second positioning surface is attached to the top surface of the support plate, the two corners of the second positioning surface away from the part to be machined respectively fall within the range of the other two anti-stupid holes of the four anti-stupid holes.

6. A system for machining a threaded hole in a multi-angle compound-contoured part, the system comprising: The hole machining device and the multi-angle composite profile part according to any one of claims 1-5, the tool feed direction of the hole machining device is perpendicular to the top surface of the support plate.

Images