A multi-station automatic precision drilling and tapping center for aluminum alloy components

Abstract

This utility model relates to the field of drilling and tapping, specifically a multi-station automatic precision drilling and tapping center for aluminum alloy components. It includes a base, with several limiting shafts fixedly mounted on the upper surface of the base, and a top plate fixedly mounted on the upper surface of each limiting shaft. It also includes a drive unit, which is slidably mounted between the limiting shafts, and has several processing modules fixedly mounted inside. In this utility model, a third motor drives the turntable to rotate, and a gearbox adjusts the speed output of the first motor. The gearbox has a built-in high-low speed transmission mechanism; during drilling, it switches to high speed, and during tapping, it switches to low speed and high torque. A second motor drives a cylindrical cam to rotate at a constant speed. The cam groove is a precision-machined helical curve. The cam groove drives the connecting shaft to control the lifting and lowering of the linkage shaft, thereby controlling the movement trajectory of the spindle. The cam groove directly controls the spindle to complete the automated cycle of rapid advance, working feed, tapping micro-advance, rapid retraction, and top pause. The rotation of the work platform allows the workpiece to enter the next process.

Description

Technical Field

[0001] This utility model relates to the field of drilling and tapping, and in particular to a multi-station automatic precision drilling and tapping center for aluminum alloy components. Background Technology

[0002] Drilling and tapping are two of the most basic and widely used metal cutting processes in machining, playing a crucial role, especially in manufacturing, automotive, aerospace, electronics, construction, and home appliance industries. Drilling is the process of using a drill bit to machine circular through holes or blind holes in material, a prerequisite for subsequent threading operations. Tapping is the process of machining internal threads within a pre-drilled hole. With the rapid development of modern manufacturing towards lightweighting, high efficiency, high precision, and automation, aluminum alloys, due to their low density, high strength, good thermal conductivity, and ease of machining, are widely used in automotive, aerospace, rail transportation, consumer electronics, new energy, and robotics fields.

[0003] When drilling and tapping, there is a problem of low processing efficiency due to the limited number of processing stations. In view of this, a multi-station automatic precision drilling and tapping center for aluminum alloy components is provided. Utility Model Content

[0004] The main purpose of this utility model is to provide a multi-station automatic precision drilling and tapping center for aluminum alloy components, so as to solve the problem of low processing efficiency caused by the small number of processing equipment stations when drilling and tapping.

[0005] To achieve the above objectives, according to one aspect of this utility model, a multi-station automatic precision drilling and tapping center for aluminum alloy components is provided, comprising a base, a plurality of limiting shafts fixedly mounted on the upper surface of the base, a top plate fixedly mounted on the upper surface of the limiting shafts, and further comprising: a drive unit slidably mounted between the plurality of limiting shafts, and a plurality of processing modules fixedly mounted inside the drive unit; and a work platform rotatably mounted inside the base, the upper surface of the work platform having a plurality of processing stations arranged in a circular array, and rotating the work platform to perform different processing steps.

[0006] Furthermore, the drive unit includes a spindle, which is slidably mounted between several limiting shafts, and several processing modules are fixedly mounted on the lower surface of the spindle.

[0007] Furthermore, a gearbox is fixedly mounted on the upper surface of the main shaft, and a No. 1 motor is fixedly mounted on one side of the gearbox, with the output shaft of the No. 1 motor connected to the inside of the gearbox.

[0008] Furthermore, a linkage shaft is fixedly installed on the upper surface of the gearbox, and a connecting shaft is fixedly installed on the side wall of the linkage shaft. One end of the linkage shaft is slidably installed in the top plate, and a cylindrical cam is rotatably installed on the lower surface of the top plate. A cam groove is opened on the side wall of the cylindrical cam. The cam groove has a spiral structure. One end of the connecting shaft is located in the cam groove. An installation shaft is fixedly installed on the upper surface of the cylindrical cam, and a second motor is fixedly installed on the upper surface of the top plate. The output shaft of the second motor is fixedly connected to the installation shaft.

[0009] Furthermore, a rotating groove is provided on the upper surface of the base, and the working platform is rotatably installed in the rotating groove. An installation groove is provided at the eccentric position on the lower surface of the rotating groove, and a No. 3 motor is fixedly installed in the installation groove.

[0010] Furthermore, the base sidewall is provided with a positioning screw hole that connects to the rotating groove, and a positioning bolt is installed in the internal thread of the positioning screw hole. The sidewall of the working platform is provided with a number of fixing screw holes in a ring array, and one end of the positioning bolt passes through the positioning screw hole and is installed in the fixing screw hole.

[0011] Furthermore, a grooved wheel is fixedly installed at the center of the lower surface of the work platform. The side wall of the grooved wheel has several slots arranged in a circular array. A fitting groove is provided at the edge of the side wall of the grooved wheel. The fitting groove has a concave arc-shaped structure.

[0012] Furthermore, a turntable is rotatably mounted at the eccentric position on the upper surface of the mounting groove. The output shaft of motor No. 3 is fixedly connected to the center of the lower surface of the turntable. An mounting plate is fixedly mounted on the lower surface of the turntable. A groove is provided on the side wall of the mounting plate. A drive shaft is fixedly mounted at the eccentric position on the lower surface of the turntable. The drive shaft is located inside the groove. When the turntable rotates, the side wall of the mounting plate fits against the side wall of the fitting groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In this invention, a turntable is driven to rotate by a No. 3 motor. The drive shaft is inserted into the slot and pushes the groove wheel to rotate 90 degrees. Each time, one slot is pushed, achieving step-by-step indexing. When the groove wheel is indexed in place, the positioning bolt is threaded into the fixed screw hole on the work platform to form a rigid connection, effectively resisting the cutting reaction force during spindle machining and preventing the platform from micro-moving. The work platform is rotatably installed in the base. Several machining stations are arranged in a ring array on the upper surface of the work platform. The rotating work platform performs different machining steps. The drilling and tapping center station of the transmission is single, resulting in low processing efficiency. In this application, parallel machining at multiple workstations on the work platform, along with automatic tool changing and indexing, greatly reduces clamping, tool changing, and waiting time. The spindle is mounted on a limit shaft via linear bearings to ensure smooth, undisturbed vertical movement. The machining module is fixed to the lower end of the spindle via a quick-change interface. When the spindle descends, the corresponding module aligns with the workpiece for machining. The gearbox adjusts the speed output of the first motor. The gearbox has a built-in high-low speed transmission mechanism, switching to high speed for drilling and low speed with high torque for tapping. The second motor drives the cylindrical cam to rotate at a constant speed. The cam groove is a precision-machined helical curve. The cam groove drives the connecting shaft to control the lifting and lowering of the linkage shaft, thereby controlling the spindle's movement trajectory. The cam groove directly controls the spindle to complete the automated cycle of rapid advance, working feed, tapping micro-advance, rapid retraction, and top pause. The rotation of the work platform allows the workpiece to enter the next process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the drilling and tapping center in a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the base structure in a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the drive unit structure in a preferred embodiment of the present invention; Figure 4 This is a cross-sectional view of the base in a preferred embodiment of the present invention; Figure 5 This is a schematic diagram of the grooved wheel assembly structure in a preferred embodiment of the present invention.

[0015] Figure label: 1. Base; 11. Limiting shaft; 12. Rotating groove; 111. Top plate; 121. Mounting groove; 122. Positioning screw hole; 2. Drive unit; 21. Spindle; 22. Machining module; 23. Gearbox; 24. Linkage shaft; 25. Cylindrical cam; 231. Motor No. 1; 241. Connecting shaft; 251. Mounting shaft; 252. Cam groove; 253. Motor No. 2; 3. Working platform; 31. Machining station; 32. Grooved wheel; 33. Turntable; 34. No. 3 motor; 311. Fixing screw hole; 321. Groove; 322. Fitting groove; 331. Mounting plate; 332. Groove; 333. Drive shaft. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0017] This embodiment provides a multi-station automatic precision drilling and tapping center for aluminum alloy components, including a base 1, with several limiting shafts 11 fixedly installed on the upper surface of the base 1, and a top plate 111 fixedly installed on the upper surface of the limiting shafts 11. It also includes a drive unit 2, which is slidably installed between the several limiting shafts 11, and several processing modules 22 are fixedly installed inside the drive unit 2; and a work platform 3, which is rotatably installed inside the base 1. Several processing stations 31 are arranged in a circular array on the upper surface of the work platform 3. Different processing steps are performed by rotating the work platform 3. The drilling and tapping center with transmission has a single station and low processing efficiency. By using multiple processing stations 31 on the work platform 3 for parallel processing and automatic tool changing and automatic indexing, the clamping, tool changing and waiting time are greatly reduced. like Figure 1 , Figure 2 , Figure 3 As shown, in order to prevent machining deviation, the drive unit 2 includes a spindle 21, which is slidably mounted between several limit shafts 11. Several machining modules 22 are fixedly mounted on the lower surface of the spindle 21. The spindle 21 is mounted on the limit shafts 11 through linear bearings to ensure smooth vertical movement without shaking. The machining modules 22 are fixed to the lower end of the spindle 21 through quick-change interfaces. When the spindle 21 moves downward, the corresponding module aligns with the workpiece for machining. like Figure 1 , Figure 3 As shown, in order to balance high-speed drilling and low-speed tapping, a gearbox 23 is fixedly installed on the upper surface of the spindle 21. A first motor 231 is fixedly installed on one side of the gearbox 23. The output shaft of the first motor 231 is connected to the inside of the gearbox 23. The gearbox 23 provides power for the rotation of the machining module 22. The machining module 22 includes a drilling module and a tapping module. The gearbox 23 adjusts the speed output of the first motor 231. The gearbox 23 has a built-in high and low speed change mechanism. When drilling, it switches to the high speed gear, and when tapping, it switches to the low speed and high torque gear. like Figure 3As shown, in order to precisely control the lifting speed of the main shaft 21, a linkage shaft 24 is fixedly installed on the upper surface of the gearbox 23, and a connecting shaft 241 is fixedly installed on the side wall of the linkage shaft 24. One end of the linkage shaft 24 is slidably installed in the top plate 111, and a cylindrical cam 25 is rotatably installed on the lower surface of the top plate 111. A cam groove 252 is opened on the side wall of the cylindrical cam 25. The cam groove 252 has a spiral structure. One end of the connecting shaft 241 is located in the cam groove 252, and an mounting shaft 2 is fixedly installed on the upper surface of the cylindrical cam 25. 51. A second motor 253 is fixedly installed on the upper surface of the top plate 111. The output shaft of the second motor 253 is fixedly connected to the mounting shaft 251. The second motor 253 drives the cylindrical cam 25 to rotate at a constant speed. The cam groove 252 is a precision-machined spiral curve. The cam groove 252 drives the connecting shaft 241 to control the lifting and lowering of the linkage shaft 24, thereby controlling the movement trajectory of the main shaft 21. The cam groove 252 directly controls the main shaft 21 to complete the automated cycle of rapid advance, working feed, tapping micro advance, rapid return and top pause.

[0018] like Figure 4 As shown, in order to facilitate multi-station processing, a rotating groove 12 is provided on the upper surface of the base 1, and the work platform 3 is rotatably installed in the rotating groove 12. An installation groove 121 is provided at the eccentric position on the lower surface of the rotating groove 12, and a No. 3 motor 34 is fixedly installed in the installation groove 121. The work platform 3 rotates to allow the workpiece to enter the next process.

[0019] like Figure 4 As shown, in order to prevent the workstation from shifting due to processing vibration, the side wall of the base 1 is provided with a positioning screw hole 122 that connects to the rotating groove 12. A positioning bolt is installed in the internal thread of the positioning screw hole 122. The side wall of the work platform 3 is provided with a number of fixing screw holes 311 in a ring array. One end of the positioning bolt passes through the positioning screw hole 122 and is threaded into the fixing screw hole 311. When the grooved wheel 32 is indexed into place, the positioning bolt is threaded into the fixing screw hole 311 on the work platform 3, forming a rigid connection, which effectively resists the cutting reaction force during the machining of the spindle 21 and prevents the platform from moving slightly. like Figure 5 As shown, in order to ensure accurate indexing, a grooved wheel 32 is fixedly installed at the center of the lower surface of the work platform 3. The side wall of the grooved wheel 32 is provided with a number of slots 321 in a ring array. The edge of the side wall of the grooved wheel 32 is provided with a fitting groove 322, which is a concave arc structure. like Figure 5As shown, a turntable 33 is rotatably mounted at the eccentric position on the upper surface of the mounting slot 121. The output shaft of motor 34 is fixedly connected to the center of the lower surface of the turntable 33. A mounting plate 331 is fixedly mounted on the lower surface of the turntable 33. A groove 332 is opened on the side wall of the mounting plate 331. A drive shaft 333 is fixedly mounted at the eccentric position on the lower surface of the turntable 33. The drive shaft 333 is located in the slot 321. When the turntable 33 rotates, the side wall of the mounting plate 331 fits against the side wall of the fitting groove 322. Motor 34 drives the turntable 33 to rotate, and the drive shaft 333 inserts into the slot 321, pushing the groove wheel 32 to rotate 90 degrees. Each time, one slot 321 is pushed, realizing step-by-step indexing.

[0020] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A multi-station automatic precision drilling and tapping center for aluminum alloy components, comprising a base (1), wherein a plurality of limiting shafts (11) are fixedly mounted on the upper surface of the base (1), and a top plate (111) is fixedly mounted on the upper surface of the limiting shafts (11), characterized in that, Also includes: Drive unit (2), which is slidably installed between several limiting shafts (11), and several processing modules (22) are fixedly installed inside the drive unit (2). The work platform (3) is rotatably installed in the base (1). The upper surface of the work platform (3) is provided with several processing stations (31) in a ring array. The work platform (3) is rotated to perform different processing steps.

2. The multi-station automatic precision drilling and tapping center for aluminum alloy components of claim 1, wherein, The drive unit (2) includes a spindle (21), which is slidably mounted between several limiting shafts (11), and several processing modules (22) are fixedly mounted on the lower surface of the spindle (21).

3. The multi-station automatic precision drilling and tapping center for aluminum alloy components of claim 2, wherein, A gearbox (23) is fixedly installed on the upper surface of the main shaft (21), and a No. 1 motor (231) is fixedly installed on one side of the gearbox (23). The output shaft of the No. 1 motor (231) is connected to the inside of the gearbox (23).

4. The multi-station automatic precision drilling and tapping center for aluminum alloy components of claim 3, wherein, A linkage shaft (24) is fixedly installed on the upper surface of the gearbox (23). A connecting shaft (241) is fixedly installed on the side wall of the linkage shaft (24). One end of the linkage shaft (24) is slidably installed in the top plate (111). A cylindrical cam (25) is rotatably installed on the lower surface of the top plate (111). A cam groove (252) is opened on the side wall of the cylindrical cam (25). The cam groove (252) has a spiral structure. One end of the connecting shaft (241) is located in the cam groove (252). An installation shaft (251) is fixedly installed on the upper surface of the cylindrical cam (25). A second motor (253) is fixedly installed on the upper surface of the top plate (111). The output shaft of the second motor (253) is fixedly connected to the installation shaft (251).

5. The multi-station automatic precision drilling and tapping center for aluminum alloy components of claim 1, wherein, The upper surface of the base (1) is provided with a rotating groove (12), the working platform (3) is rotatably installed in the rotating groove (12), and the lower surface of the rotating groove (12) is provided with an eccentric mounting groove (121), and a No. 3 motor (34) is fixedly installed in the mounting groove (121).

6. The multi-station automatic precision drilling and tapping center for aluminum alloy components of claim 1, wherein, The base (1) has a positioning screw hole (122) on its side wall that connects to the rotating groove (12). A positioning bolt is installed in the internal thread of the positioning screw hole (122). The working platform (3) has a number of fixing screw holes (311) in a ring array on its side wall. One end of the positioning bolt passes through the positioning screw hole (122) and is installed in the fixing screw hole (311).

7. The multi-station automatic precision drilling and tapping center for aluminum alloy components of claim 1, wherein, A grooved wheel (32) is fixedly installed at the center of the lower surface of the working platform (3). The side wall of the grooved wheel (32) is provided with a number of slots (321) in a ring array. A fitting groove (322) is provided at the edge of the side wall of the grooved wheel (32). The fitting groove (322) is a concave arc structure.

8. The multi-station automatic precision drilling and tapping center for aluminum alloy components of claim 5, wherein, A turntable (33) is rotatably mounted on the upper surface of the mounting groove (121). The output shaft of motor No. 3 (34) is fixedly connected to the center of the lower surface of the turntable (33). An mounting plate (331) is fixedly mounted on the lower surface of the turntable (33). A groove (332) is provided on the side wall of the mounting plate (331). A drive shaft (333) is fixedly mounted on the lower surface of the turntable (33). The drive shaft (333) is located in the groove (321). When the turntable (33) rotates, the side wall of the mounting plate (331) is attached to the side wall of the fitting groove (322).

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