Adjustable aluminum alloy casting drilling tool

Abstract

The invention is suitable for the technical field of drilling machining, and provides an adjustable aluminum alloy casting drilling tool which comprises a workbench and a fixing part arranged on the workbench, and a height adjusting plate is further installed on the workbench in a sliding mode; the drilling mechanism comprises drilling assemblies and a supporting frame fixedly installed at the end of the height adjusting plate, a supporting cylinder is fixedly installed at the end, away from the height adjusting plate, of the supporting frame, the interior of the supporting cylinder is hollow, multiple sets of strip-shaped through holes are formed in the side wall of the supporting cylinder, and the multiple sets of drilling assemblies are arranged in the circumferential direction of the supporting cylinder; through cooperative arrangement of the height adjusting plate, the drilling mechanism and the fixing part, the problems that when an existing drilling tool conducts multi-hole machining, a workpiece needs to be continuously rotated, the situation that the workpiece deviates inevitably in the workpiece rotating process, the distance between hole sites is prone to being changed, and the machining precision is affected are solved. And the machining precision is influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling processing, and specifically to an adjustable drilling tooling for aluminum alloy castings. Background Art

[0002] During the processing of aluminum alloy castings, drilling is an extremely common and crucial process. Due to its advantages such as low density, high strength, good plasticity, and excellent corrosion resistance, aluminum alloy has been widely used in many fields such as aviation, aerospace, automotive, machinery manufacturing, shipbuilding, and chemical industry.

[0003] When processing common flanges, multiple through holes need to be drilled in the circumferential direction. When the existing drilling tooling is used for multi-hole processing, the workpiece needs to be continuously rotated, and it is inevitable that the workpiece will shift during the rotation process, which is likely to cause changes in the spacing between hole positions and affect the processing accuracy. Therefore, in view of the above situation, there is an urgent need to provide an adjustable drilling tooling for aluminum alloy castings to overcome the deficiencies in current practical applications. Summary of the Invention

[0004] The purpose of the present invention is to provide an adjustable drilling tooling for aluminum alloy castings, aiming to solve the problems in the above background art.

[0005] The present invention is realized as follows. An adjustable drilling tooling for aluminum alloy castings includes:

[0006] A workbench and a fixing part arranged on the workbench. A height adjustment plate is slidably installed on the workbench, and an electric guide rail for driving the height adjustment plate to move is arranged inside the workbench.

[0007] A drilling mechanism, which includes a drilling component and a support frame fixedly installed at the end of the height adjustment plate. One end of the support frame far from the height adjustment plate is fixedly installed with a support cylinder. The support cylinder is hollow inside, and a plurality of groups of strip-shaped through holes are opened on the side wall of the support cylinder. A plurality of groups of drilling components are arranged in the circumferential direction of the support cylinder, and a control part for controlling the working states of the plurality of groups of drilling components is also arranged on the support frame.

[0008] As a further solution of the present invention: The fixing part includes:

[0009] A chuck arranged on the workbench. Clamping blocks for clamping the workpiece are arranged on the chuck, and a plurality of groups of clamping blocks are provided. A driving structure for driving the plurality of groups of clamping blocks to approach or move away from each other is arranged inside the chuck.

[0010] A limit support plate for restricting the position of the workpiece. The limit support plate is arranged on the clamping block, and the workpiece is supported by the limit support plate so that a specified distance is maintained between the bottom of the workpiece and the surface of the chuck.

[0011] As a further solution of the present invention: The drilling assembly includes:

[0012] A lifting plate, which is slidably installed on the side wall of the support cylinder, and an elastic part for supporting the lifting plate is arranged in the support cylinder;

[0013] An execution part for drilling the workpiece, and the execution part is arranged on the lifting plate;

[0014] And a translation part for adjusting the working position of the execution part.

[0015] As a further solution of the present invention: The elastic part includes

[0016] A guide rod fixedly installed in the support cylinder, and a through hole slidably connected to the guide rod is opened on the lifting plate;

[0017] And a first spring for elastically supporting the lifting plate, and the first spring is sleeved on the guide rod.

[0018] As a further solution of the present invention: The control part includes:

[0019] A control board slidably installed on the support frame, and an internal thread hole is opened in the middle of the control board;

[0020] A first threaded rod rotatably installed in the support frame, which is threadedly connected with the internal thread hole of the control board, and a driving motor for driving the first threaded rod to rotate is arranged in the support frame;

[0021] An L-shaped linkage plate, and multiple groups of the L-shaped linkage plates are fixedly installed at the bottom of the control board, and an electromagnet is arranged at the bottom of the L-shaped linkage plate;

[0022] And an iron block for cooperating with the electromagnet, and the iron block is arranged at the end of the lifting plate.

[0023] As a further solution of the present invention: The execution part includes:

[0024] A moving box, which is slidably installed on the lifting plate;

[0025] And a drill bit rotatably installed at the bottom of the moving box, and a driving motor for driving the drill bit to rotate is arranged in the moving box.

[0026] As a further solution of the present invention: The execution part further includes:

[0027] A receiving groove opened on the drill bit, a grinding block is slidably installed in the receiving groove, and the grinding block is of a U-shaped structure, and a cylinder for pushing the grinding block to move is further arranged in the drill bit;

[0028] An air guide ring fixedly installed at the bottom of the moving box, the air guide ring is rotatably connected to the drill bit, and an installation hole communicating with the air guide ring is provided on the side wall of the drill bit;

[0029] The third conduit, one end of the third conduit is fixedly installed in the installation hole, and the third conduit communicates with the air guide ring, and the other end of the third conduit is connected to the air cylinder;

[0030] A compression box fixedly installed on the moving box, a first conduit is connected to the compression box, and a second conduit is arranged between the first conduit and the air guide ring;

[0031] A piston, the piston is slidably installed in the compression box, and a push tube fixedly connected to the piston is also slidably installed on the compression box;

[0032] A push rod slidably connected to the push tube, and a third spring for elastically supporting the push rod is arranged in the push tube;

[0033] And a limit block fixedly installed at the end of the push rod, a second spring is also arranged between the limit block and the compression box, and the elastic coefficient of the second spring is smaller than that of the third spring.

[0034] As a further solution of the present invention: the translation part includes:

[0035] A second threaded rod rotatably installed on the lifting plate, and an internal threaded hole threadedly connected to the second threaded rod is provided on the top of the moving box;

[0036] And a driven gear, the driven gear is fixedly installed at the end of the second threaded rod.

[0037] As a further solution of the present invention: a motor is also fixedly installed on the inner top of the support cylinder, and a driving gear meshing with the driven gear is fixedly installed on the output shaft of the motor.

[0038] Compared with the prior art, the beneficial effects of the present invention:

[0039] The fixing part can be used to fix the workpiece (preferably applicable to processing large-sized flange plates). The electric guide rail can press the bottom of the support cylinder onto the workpiece by adjusting the working height of the height adjustment plate, further improving the fixing effect of the workpiece. After the support cylinder presses onto the workpiece, the height adjustment plate will stop moving. According to the number of holes to be drilled, the control part can selectively drive the drilling assembly to move down for drilling operations, which is convenient and fast. For example, if there are six groups of drilling assemblies, two holes, three holes, and six holes can be processed at equal intervals to meet different processing requirements;

[0040] Through the cooperative setting of the height adjustment plate, the drilling mechanism and the fixing part, the present invention avoids the problem that when the existing drilling tooling performs multi-hole processing, the workpiece needs to be continuously rotated, and it is inevitable that the workpiece will shift during the rotation process, which easily leads to changes in the spacing between hole positions and affects the machining accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0042] Figure 1 It is a structural schematic diagram of the present invention.

[0043] Figure 2 It is a structural schematic diagram of the drilling mechanism in the present invention.

[0044] Figure 3 It is Figure 2 a bottom view structural schematic diagram of

[0045] Figure 4 It is Figure 3 an enlarged structural schematic diagram of part A in

[0046] Figure 5 It is a structural schematic diagram of the drilling assembly in the present invention.

[0047] Figure 6 It is an internal structural schematic diagram of the support cylinder in the present invention.

[0048] Figure 7 It is a partial cross-sectional structural schematic diagram of the execution part in the present invention.

[0049] In the drawings: 1 - workbench, 2 - height adjustment plate, 3 - support frame, 4 - support cylinder, 5 - lifting plate, 6 - drill bit, 7 - clamping block, 8 - chuck, 9 - limiting support plate, 10 - control board, 11 - L-shaped linkage plate, 12 - first threaded rod, 13 - moving box, 14 - compression box, 15 - second threaded rod, 16 - electromagnet, 17 - iron block, 18 - guide rod, 19 - driven gear, 20 - first spring, 21 - grinding block, 22 - push rod, 23 - second spring, 24 - limiting block, 25 - motor, 26 - driving gear, 27 - first conduit, 28 - piston, 29 - push tube, 30 - second conduit, 31 - third conduit, 32 - air guide ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0051] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0053] The present invention will be further explained below in conjunction with specific embodiments.

[0054] Please refer to Figures 1 - 7 , an adjustable drilling tooling for aluminum alloy castings provided by an embodiment of the present invention, the adjustable drilling tooling for aluminum alloy castings includes:

[0055] A workbench 1 and a fixing part arranged on the workbench 1. A height adjusting plate 2 is slidably installed on the workbench 1, and an electric guide rail for driving the height adjusting plate 2 to move is arranged inside the workbench 1;

[0056] A drilling mechanism, the drilling mechanism includes a drilling assembly and a support frame 3 fixedly installed at the end of the height adjusting plate 2. A support cylinder 4 is fixedly installed at one end of the support frame 3 away from the height adjusting plate 2. The support cylinder 4 is hollow inside, and a plurality of groups of strip-shaped through holes are formed on the side wall of the support cylinder 4. A plurality of groups of the drilling assemblies are arranged in the circumferential direction of the support cylinder 4, and a control part for controlling the working states of the plurality of groups of drilling assemblies is also arranged on the support frame 3.

[0057] In an embodiment of the present invention, during use, the fixing part can be used to fix the workpiece (preferably applicable to processing large-sized flange plates). The electric guide rail can adjust the working height of the height adjusting plate 2, enabling the bottom of the support cylinder 4 to press onto the workpiece, further improving the fixing effect of the workpiece. After the support cylinder 4 presses onto the workpiece, the height adjusting plate 2 will stop moving. According to the number of holes to be drilled, the control part can selectively drive the drilling assembly to move down for drilling operations, which is convenient and fast. For example, if there are six groups of drilling assemblies, two holes, three holes, and six holes can be processed at equal intervals to meet different processing requirements. Compared with the prior art, through the coordinated setting of the height adjusting plate 2, the drilling mechanism, and the fixing part, the present invention avoids the problem that in the existing drilling tooling during multi-hole processing, the workpiece needs to be continuously rotated, and it is inevitable that the workpiece will shift during the rotation process, easily causing the distance between hole positions to change and affecting the processing accuracy.

[0058] In an embodiment of the present invention, please refer to Figures 1 - 7 , the fixing part includes:

[0059] A chuck 8 provided on the workbench 1, with clamping blocks 7 for clamping the workpiece provided on the chuck 8, and multiple groups of clamping blocks 7 are provided. A driving structure for driving multiple groups of clamping blocks 7 to move closer to or away from each other is provided inside the chuck 8; among them, the driving structure can adopt a telescopic cylinder or other existing structures capable of driving the clamping blocks 7 to achieve the above-mentioned movement, and no specific limitation is made here. The chuck 8 can be fixedly installed on the workbench 1 or rotatably installed on the workbench 1. When the chuck 8 is rotatably installed on the workbench 1, a driving motor for driving the chuck 8 to rotate can be provided inside the workbench 1;

[0060] A limit support plate 9 for restricting the position of the workpiece, the limit support plate 9 is provided on the clamping block 7, and the workpiece is supported by the limit support plate 9 so that a specified distance is maintained between the bottom of the workpiece and the surface of the chuck 8, facilitating drilling.

[0061] In this embodiment, the cooperation structure between the chuck 8 and the clamping blocks 7 is similar to a three-jaw chuck 8, which is convenient for fixing the flange plate, and the central position of the chuck 8 corresponds to the central position of the support cylinder 4. When the chuck 8 can rotate on the workbench 1 and cooperate with a group of drilling assemblies, it is similar to traditional drilling equipment.

[0062] In an embodiment of the present invention, please refer to Figures 1 - 7 , the drilling assembly includes:

[0063] A lifting plate 5, the lifting plate 5 is slidably installed on the side wall of the support cylinder 4, and an elastic part for supporting the lifting plate 5 is provided inside the support cylinder 4;

[0064] An actuator for drilling a workpiece, the actuator being provided on a lifting plate 5;

[0065] And a translation unit for adjusting the working position of the actuator;

[0066] The elastic unit includes

[0067] A guide rod 18 fixedly installed in a support cylinder 4, and a through hole slidably connected to the guide rod 18 is provided on the lifting plate 5;

[0068] And a first spring 20 for elastically supporting the lifting plate 5, the first spring 20 being sleeved on the guide rod 18;

[0069] The control unit includes:

[0070] A control board 10 slidably installed on a support frame 3, and an internal threaded hole is provided in the middle of the control board 10;

[0071] A first threaded rod 12 rotatably installed in the support frame 3, the first threaded rod 12 being threadedly connected to the internal threaded hole of the control board 10, and a driving motor for driving the first threaded rod 12 to rotate is provided in the support frame 3;

[0072] An L-shaped linkage plate 11, a plurality of groups of the L-shaped linkage plates 11 are fixedly installed at the bottom of the control board 10, and an electromagnet 16 is provided at the bottom of the L-shaped linkage plate 11;

[0073] And an iron block 17 for cooperating with the electromagnet 16, the iron block 17 being provided at the end of the lifting plate 5;

[0074] The actuator includes:

[0075] A moving box 13, the moving box 13 being slidably installed on the lifting plate 5;

[0076] And a drill bit 6 rotatably installed at the bottom of the moving box 13, and a driving motor for driving the drill bit 6 to rotate is provided in the moving box 13;

[0077] The actuator further includes:

[0078] A receiving groove provided in the drill bit 6, a grinding block 21 is slidably installed in the receiving groove, and the grinding block 21 is of a U-shaped structure. A cylinder for pushing the grinding block 21 to move is further provided in the drill bit 6; wherein the cylinder is a micro cylinder and can adopt the existing publicly known technology;

[0079] An air guide ring 32 fixedly installed at the bottom of the moving box 13, the air guide ring 32 is rotatably connected to the drill bit 6, and an installation hole communicated with the air guide ring 32 is provided on the side wall of the drill bit 6;

[0080] The third conduit 31, one end of the third conduit 31 is fixedly installed in the mounting hole, and the third conduit 31 is communicated with the air guide ring 32, and the other end of the third conduit 31 is connected to the cylinder; wherein a shunt pipe is arranged at the other end of the third conduit 31, which can be communicated with a plurality of cylinders;

[0081] The compression box 14 fixedly installed on the moving box 13, a first conduit 27 is connected to the compression box 14, and a second conduit 30 is arranged between the first conduit 27 and the air guide ring 32; wherein the compression box 14 is pre-filled with gas;

[0082] The piston 28, the piston 28 is slidably installed in the compression box 14, and a push pipe 29 fixedly connected to the piston 28 is also slidably installed on the compression box 14;

[0083] The push rod 22 slidably connected to the push pipe 29, and a third spring for elastically supporting the push rod 22 is arranged in the push pipe 29;

[0084] And the limit block 24 fixedly installed at the end of the push rod 22, a second spring 23 is also arranged between the limit block 24 and the compression box 14, and the elastic coefficient of the second spring 23 is smaller than that of the third spring;

[0085] The translation part includes:

[0086] The second threaded rod 15 rotatably installed on the lifting plate 5, and an internal threaded hole threadedly connected to the second threaded rod 15 is opened at the top of the moving box 13;

[0087] And the driven gear 19, the driven gear 19 is fixedly installed at the end of the second threaded rod 15;

[0088] A motor 25 is also fixedly installed at the top inside the support cylinder 4, and a driving gear 26 meshing with the driven gear 19 is fixedly installed on the output shaft of the motor 25.

[0089] In this embodiment, when the lifting plate 5 is in the initial position, the driven gear 19 meshes with the driving gear 26. Through the cooperation of the motor 25, the driving gear 26 and the driven gear 19, the second threaded rod 15 can be driven to rotate, thereby driving the moving box 13 to move on the lifting plate 5, realizing the adjustment of the working position of the drill bit 6, so as to meet the drilling requirements at different positions. After the drill bit 6 is adjusted to the predetermined processing position, the electromagnet 16 at the bottom of the L-shaped linkage plate 11 is selectively energized to realize the adsorption effect on the iron block 17, so that the corresponding lifting plate 5 can move with the L-shaped linkage plate 11. The control plate 10 is driven to move downward by the first threaded rod 12, and then the corresponding lifting plate 5 can be driven to move downward by the L-shaped linkage plate 11, so that the drill bit 6 can press on the flange for drilling. After the drilling is completed, the L-shaped linkage plate 11 drives the lifting plate 5 to move further downward, so that the limiting block 24 presses on the flange. The limiting block 24 will push the piston 28 to move upward through the push rod 22, the push tube 29 and the third spring, and the gas in the compression box 14 is sent into the cylinder through the first conduit 27, the second conduit 30, the air guide ring 32 and the third conduit 31. The cylinder is used to push the grinding block 21 to move outward. Since the length of the grinding block 21 is relatively large, the drilled hole can surround the grinding block 21. The outwardly moving grinding block 21 can just press on the drilled hole. By rotating and reciprocating up and down the drill bit 6, the grinding of the drilled hole can be realized. Since the hardness of the third spring is greater than that of the second spring 23, when the drill bit 6 reciprocates, the piston 28 can always be pressed to the top of the compression box 14. When resetting, when the outer ring between the push rod 22 and the push tube 29 unfolds, the grinding block 21 has left the drilled hole area.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable drilling tooling for aluminum alloy castings, comprising a workbench and a fixing part arranged on the workbench. A height adjustment plate is also slidably installed on the workbench, and an electric guide rail for driving the height adjustment plate to move is arranged in the workbench, characterized in that, It further includes: A drilling mechanism, which includes a drilling assembly and a support frame fixedly installed at the end of the height adjustment plate. A support cylinder is fixedly installed at one end of the support frame away from the height adjustment plate. The support cylinder is hollow inside, and multiple groups of strip-shaped through holes are formed on the side wall of the support cylinder. Multiple groups of the drilling assemblies are arranged in the circumferential direction of the support cylinder, and a control part for controlling the working states of the multiple groups of drilling assemblies is also arranged on the support frame.

2. The adjustable aluminum alloy casting drilling tooling according to claim 1, characterized in that, The fixing part includes: A chuck arranged on the workbench, and clamping blocks for clamping the workpiece are arranged on the chuck. Multiple groups of clamping blocks are provided, and a driving structure for driving the multiple groups of clamping blocks to approach or move away from each other is arranged inside the chuck; A limit support plate for restricting the position of the workpiece. The limit support plate is arranged on the clamping block, and the workpiece is supported by the limit support plate so that a specified distance is maintained between the bottom of the workpiece and the surface of the chuck.

3. The adjustable aluminum alloy casting drilling tooling according to claim 1, characterized in that The drilling assembly includes: A lifting plate slidably installed on the side wall of the support cylinder, and an elastic part for supporting the lifting plate is arranged inside the support cylinder; An execution part for drilling the workpiece, and the execution part is arranged on the lifting plate; And a translation part for adjusting the working position of the execution part.

4. The adjustable aluminum alloy casting drilling tooling according to claim 3, wherein, The elastic part includes A guide rod fixedly installed inside the support cylinder, and a through hole slidably connected to the guide rod is formed on the lifting plate; And a first spring for elastically supporting the lifting plate. The first spring is sleeved on the guide rod.

5. The adjustable aluminum alloy casting drilling tooling according to claim 3, wherein The control part includes: A control plate slidably installed on the support frame, and an internal thread hole is formed in the middle of the control plate; A first threaded rod rotatably installed inside the support frame. The first threaded rod is threadedly connected to the internal thread hole of the control plate, and a driving motor for driving the first threaded rod to rotate is arranged inside the support frame; An L-shaped linkage plate. Multiple groups of the L-shaped linkage plates are fixedly installed at the bottom of the control plate, and an electromagnet is arranged at the bottom of the L-shaped linkage plate; And an iron block for cooperating with the electromagnet. The iron block is arranged at the end of the lifting plate.

6. The adjustable aluminum alloy casting drilling tooling according to claim 3, wherein The execution part includes: A moving box slidably installed on the lifting plate; And a drill bit rotatably installed at the bottom of the moving box. A driving motor for driving the drill bit to rotate is arranged inside the moving box.

7. The adjustable aluminum alloy casting drilling tooling according to claim 6, characterized in that, The execution part further includes: A receiving groove formed on the drill bit. A grinding block is slidably installed in the receiving groove, and the grinding block is of a U-shaped structure. A cylinder for pushing the grinding block to move is also arranged inside the drill bit; An air guide ring fixedly installed at the bottom of the moving box. The air guide ring is rotatably connected to the drill bit, and an installation hole communicating with the air guide ring is formed on the side wall of the drill bit; A third conduit. One end of the third conduit is fixedly installed in the installation hole and is connected to the air guide ring, and the other end of the third conduit is connected to the cylinder; A compression box fixedly installed on the moving box. A first conduit is connected to the compression box, and a second conduit is arranged between the first conduit and the air guide ring; A piston slidably installed in the compression box, and a push tube fixedly connected to the piston is also slidably installed on the compression box; A push rod slidably connected to the push tube. A third spring for elastically supporting the push rod is arranged inside the push tube; and a limit block fixedly installed at the end of the push rod. A second spring is further arranged between the limit block and the compression box, and the elastic coefficient of the second spring is less than that of the third spring.

8. The adjustable aluminum alloy casting drilling tooling according to claim 6, characterized in that The translation part includes: a second threaded rod rotatably installed on the lifting plate, and an internal threaded hole threadedly connected to the second threaded rod is formed at the top of the moving box; and a driven gear fixedly installed at the end of the second threaded rod.

9. The adjustable aluminum alloy casting drilling tooling according to claim 8, characterized in that, A motor is further fixedly installed at the inner top of the support cylinder, and a driving gear meshing with the driven gear is fixedly installed on the output shaft of the motor.

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