A drilling and tapping machine

Abstract

This invention relates to the field of drilling and tapping technology, specifically a drilling and tapping machine. It includes a housing stably placed in the working area, with a worktable assembly for placing workpieces connected above the base. A bearing ring is fixed to the rear inner wall of the housing, and a tool changer is rotatably connected to the inner side of the bearing ring. The tool changer has bearing tubes evenly spaced inside via a support assembly. Connecting pipes are connected inside the bearing tubes via a rotation control assembly, and drill bits or tapping tools are respectively connected to the bottom of multiple sets of connecting pipes. This drilling and tapping machine allows for the selection and use of various tapping tools and drill bits without disassembly for replacement, thus making operation convenient. It can automatically, intelligently, and continuously complete two different metal processing techniques, not only improving subsequent drilling and tapping efficiency but also achieving composite functions, enabling the drilling and tapping machine to perform different machining operations and meet diverse usage requirements.

Description

Technical Field

[0001] This invention relates to the field of drilling and tapping technology, specifically to a drilling and tapping machine. Background Technology

[0002] Drilling and tapping machines are used in the production and processing of some mechanical parts and hardware parts to perform drilling and threading. Since drilling and tapping machines are two different machining tools, they can perform drilling and threading continuously, thus improving production efficiency and processing accuracy. For example, the patent application published in the prior art with publication number "CN106425481A" is entitled "A Rail Drilling and Tapping Machine". It discloses a machine body, a crossbeam, a drive motor, and a turret head. The crossbeam is located on the machine body and is fixedly connected to the machine body. The drive motor is mounted on the crossbeam. The turret head is mounted on the front end of the crossbeam. The drilling device and the tapping device are fixedly connected to the machine body. A worktable is installed at the bottom of the machine body and is slidably connected to the machine body. A spring is installed on one side of the turret head, and a hook is provided at the end of the spring. The spring is connected to the crossbeam through the hook. A screw and a drive motor are installed at the bottom of the worktable. The turret head facilitates tool changing operations and maintains high work efficiency. The screw and drive motor installed at the bottom of the worktable allow for easy adjustment of the worktable position.

[0003] While the existing drilling and tapping machines described above allow for easy tool changing via the turret head, subsequent tool changes require the use of a robotic arm or manual labor to install the tool from the turret head onto the drilling or tapping device. This cumbersome operation negatively impacts drilling and tapping efficiency. Therefore, we propose a drilling and tapping machine to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a drilling and tapping machine to solve the problem mentioned in the background art that, although the existing drilling and tapping machines are easy to use with the turret head, when tool changing is required later, a robotic arm or manual labor is still needed to install the tool on the turret head onto the drilling or tapping device, which is cumbersome and affects the efficiency of drilling and tapping later.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a drilling and tapping machine, comprising an outer shell stably placed in the working area, and a base installed inside the outer shell, wherein a worktable assembly for placing workpieces is connected above the base, a bearing ring is fixed to the rear inner wall of the outer shell, and a tool changing frame is rotatably connected to the inner side of the bearing ring, and a bearing tube is connected at equal intervals inside the tool changing frame through a support assembly, a connecting pipe is connected inside the bearing tube through a rotation control assembly, and a drill bit or tapping tool is connected below the multiple sets of connecting pipes respectively, and a lifting control assembly is installed on the top inner wall of the outer shell.

[0006] Preferably, the tool changing frame is arc-shaped, and sawtooth blocks are installed at equal intervals on the outer side of the tool changing frame. A transmission gear is connected to the bottom of the tool changing frame through the sawtooth blocks, and the shaft in the middle of the transmission gear is rotatably connected to the rear side of the outer casing.

[0007] The above structure allows the transmission gear to rotate, which in turn drives the tool changer frame to rotate.

[0008] Preferably, the tool changing frame has through slots spaced at equal intervals inside. The support assembly includes a fixing frame mounted on the tool changing frame. The fixing frame is L-shaped, and a limiting rod is fixed to the inner side of each of the two corresponding fixing frames. The limiting rod passes through the inside of the through slot. A reset spring is nested on the outer side of the limiting rod, and a limiting block is connected through the outer side of one end of the limiting rod. Limiting blocks are symmetrically installed on the outer side of the bearing tube.

[0009] With the above structure, the fixing frame can easily support and fix the limiting rod, ensuring that the limiting rod can be placed and used stably.

[0010] Preferably, the rotation control assembly includes a limiting ring installed on the outside of the connecting pipe, and a circular bearing groove is provided on the inner side of the bearing pipe. The inner side of the bearing groove is provided with a limiting ring in a concave-convex fit, and a ball is installed on the bottom surface of the limiting ring, so that the connecting pipe and the bearing pipe move up and down synchronously.

[0011] By using the above structure, the ball bearings can reduce the friction between the limiting ring and the bearing groove.

[0012] Preferably, the lifting control assembly includes an electric push rod installed on the inner wall of the top of the housing, and a support frame is fixedly connected to the lower part of the electric push rod. A guide rod is installed in a slot on the inner wall of the rear side of the housing, and a guide rod is connected through the inner rear side of the support frame. Meanwhile, a servo motor is fixed below the support frame, and the output end of the servo motor is connected to the docking column.

[0013] With the above-described structure, the servo motor can drive the docking column to rotate.

[0014] Preferably, a docking block is fixed to the lower outer side of the docking post, and a docking groove is opened inside the end of the docking tube near the docking post. The docking groove and the docking block are in concave-convex fit, and the docking post and the docking tube rotate synchronously.

[0015] With the above-mentioned structure, the docking column can drive the docking pipe to rotate.

[0016] Preferably, the tool changing frame is configured as a rotating structure with the center of the bearing ring as the center.

[0017] The above structure ensures that the tool changer rotates stably.

[0018] Preferably, the bottom surface of the fixing frame is fixed with a circular dust collection frame, and a circle of dust collection heads is installed on the inner side wall of the dust collection frame, and the inner diameter of the dust collection frame is larger than the outer diameter of the supporting tube.

[0019] With the above-mentioned structure, the dust collection frame will not affect the lifting and lowering operation of the support pipe.

[0020] Preferably, an arc-shaped main suction pipe is fixed to the inner side of the blade changing frame, and the outer side of the main suction pipe is connected to the suction frame through a secondary suction pipe.

[0021] Preferably, the tool changing frame has a rectangular plate structure, and the rear side of the tool changing frame is engaged and slidably connected to the rear inner wall of the housing, and the left side of the tool changing frame is connected to the output end of the electric telescopic rod installed in the housing.

[0022] Compared with the prior art, the beneficial effects of this invention are: this drilling and tapping machine can select and use a variety of tapping tools and drill bits without disassembling and replacing them, thus making operation convenient. It can automatically, intelligently, and continuously complete two different metal processing techniques, which not only improves the efficiency of subsequent drilling and tapping but also realizes composite functions, enabling the drilling and tapping machine to perform different mechanical processing to meet different usage needs. The specific details are as follows: (1) Multiple tapping tools and drill bits are installed inside the lower part of multiple sets of connecting pipes. In the later stage, by controlling the rotation of the tool changing frame, multiple tapping tools and drill bits can be selected and used without disassembling and replacing them. Therefore, the operation is convenient and can automatically, intelligently and continuously complete two different metal processing processes. This not only improves the drilling and tapping efficiency in the later stage, but also realizes the composite function, so that the drilling and tapping machine can perform different mechanical processing to meet different usage needs. Meanwhile, the convex and concave fit between the docking block on the outside of the docking post and the docking groove on the inside of the docking tube allows the servo motor to drive the corresponding position of the docking tube below to rotate, eliminating the need for multiple sets of servo motors and saving energy. (2) The circular dust collection frame and the dust collection head installed on the inner side wall allow the dust collection frame and dust collection head to adsorb and collect the impurities on the outside of the drill bit and tapping tool after they rise and reset, so as to facilitate the next use of the drill bit and tapping tool. (3) The tool changing frame is designed as a rectangular plate structure, which can increase the number of bearing tubes, thereby facilitating the installation and use of various tapping tools and drill bits, and improving the applicability of the drilling and tapping machine. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the outer shell of the present invention; Figure 3 This is a schematic diagram of the left cross-sectional structure of the outer shell of the present invention; Figure 4 This is a schematic diagram of the left-side structure of the bearing ring of the present invention; Figure 5 This is a schematic diagram of the main cross-sectional structure of the tool changer frame of the present invention; Figure 6 This is a schematic diagram of the main cross-sectional structure of the bearing tube of the present invention; Figure 7 This is a partial cross-sectional view of the structure above the nozzle of the present invention; Figure 8 This is a schematic diagram of the separation structure of the connecting pipe, the bearing pipe, and the docking column of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the tool changer frame in Embodiment 2 of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the main suction pipe of the present invention; Figure 11 This is a schematic diagram of the three-dimensional structure of the tool changer frame in Embodiment 3 of the present invention.

[0024] In the diagram: 1. Outer shell; 2. Base; 3. Workbench assembly; 4. Bearing ring; 5. Tool changer; 51. Through slot; 52. Servo block; 6. Electric push rod; 7. Support frame; 8. Servo motor; 9. Connecting post; 91. Connecting block; 10. Guide rod; 11. Transmission gear; 12. Bearing tube; 121. Bearing groove; 13. Fixing frame; 131. Limiting rod; 132. Return spring; 14. Limiting block; 15. Connecting tube; 151. Connecting groove; 16. Drill bit; 17. Tapping tool; 18. Limiting ring; 19. Main suction pipe; 20. Suction frame; 21. Secondary suction pipe. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-11 The present invention provides the following technical solution: Example 1: The drilling and tapping machine in this example can automatically select and use various tapping tools 17 and drill bits 16 without disassembling them for replacement. This makes operation convenient, improves subsequent drilling and tapping efficiency, and enhances intelligent operation. For the specific structure, please refer to the attached diagram. Figures 1-8As shown, the device includes an outer shell 1 stably placed in the working area, and a base 2 installed inside the outer shell 1. A worktable assembly 3 for placing workpieces is connected above the base 2. A bearing ring 4 is fixed to the rear inner wall of the outer shell 1, and a tool changer 5 is rotatably connected to the inner side of the bearing ring 4. Bearing tubes 12 are connected at equal intervals inside the tool changer 5 through a support assembly. Connecting pipes 15 are connected inside the bearing tubes 12 through a rotation control assembly. Drill bits 16 or tapping tools 17 are respectively connected to the lower part of multiple sets of connecting pipes 15. A lifting control assembly is installed on the top inner wall of the outer shell 1. The tool changer frame 5 is arc-shaped, and serrated blocks 52 are evenly spaced on its outer surface. A transmission gear 11 is connected to the bottom of the tool changer frame 5 through the serrated blocks 52. The shaft in the middle of the transmission gear 11 is rotatably connected to the rear side of the outer casing 1. The tool changer frame 5 has evenly spaced through slots 51 inside. The support assembly includes a fixing bracket 13 mounted on the tool changer frame 5. The fixing bracket 13 is L-shaped, and a limiting rod 131 is fixed to the inner side of each of the two corresponding fixing brackets 13. The limiting rod 131 passes through the inside of the through slot 51, and the outer side of the limiting rod 131... A return spring 132 is nested in the connection, and a limit block 14 is connected through the outer side of one end of the limit rod 131. Limit blocks 14 are symmetrically installed on the outer side of the bearing tube 12. The rotation control assembly includes a limit ring 18 installed on the outer side of the connecting tube 15, and a circular bearing groove 121 is opened on the inner side of the bearing tube 12. The limit ring 18 is provided in a concave-convex fit on the inner side of the bearing groove 121, and a ball is installed on the bottom surface of the limit ring 18. The connecting tube 15 and the bearing tube 12 rise and fall synchronously. The lifting control assembly includes an electric push rod 6 installed on the inner wall of the top of the outer shell 1, and the electric push rod 6... A support frame 7 is fixedly connected below, and a guide rod 10 is installed in the groove of the inner rear wall of the outer shell 1. The guide rod 10 is also connected through the inner rear side of the support frame 7. At the same time, a servo motor 8 is fixed below the support frame 7, and the output end of the servo motor 8 is connected to the docking post 9. A docking block 91 is fixed on the outer side of the lower end of the docking post 9. A docking groove 151 is opened in the inner side of the docking pipe 15 near the docking post 9. The docking groove 151 and the docking block 91 are in concave-convex fit. The docking post 9 and the docking pipe 15 rotate synchronously. The tool changing frame 5 forms a rotating structure with the center of the bearing ring 4 as the center.

[0027] Move the entire drilling and tapping machine into the working area. Then, manually open the observation door on the front of the outer casing 1. Mount the workpiece to be processed onto the worktable assembly 3 using a fixture. Since this part is existing technology, it will not be described in detail here. Next, close the observation door and start the electric push rod 6. The output end of the electric push rod 6 drives the support frame 7 and the servo motor 8 to move downwards. At this time, the rear side of the support frame 7 slides downwards on the outside of the guide rod 10. The output end of the servo motor 8 drives the docking post 9 to move downwards together. When the docking block 91 on the outer side below the docking post 9 is inserted into the docking groove 151 above the docking tube 15, start the servo motor 8. The end drives the docking column 9 and the docking tube 15 to rotate together. At this time, the limiting ring 18 on the outside of the docking tube 15 slides in the circular bearing groove 121. Since the bottom surface of the limiting ring 18 is equipped with ball bearings, the friction between the limiting ring 18 and the bearing groove 121 can be reduced. At the same time, the output end of the electric push rod 6 continues to drive the support frame 7 and the servo motor 8 to move downward, so that the docking tube 15 drives the bearing tube 12 to move downward. At this time, the limiting block 14 on the outside of the upper part of the bearing tube 12 slides downward on the outside of the limiting rod 131, and squeezes and stores the force on the return spring 132. Therefore, the drill bit 16 installed below the docking tube 15 rotates and moves downward to perform drilling operations.

[0028] After drilling is completed, the output end of the electric push rod 6 first drives the support frame 7 and the servo motor 8 to move upward and reset, causing the docking post 9 to separate from the docking tube 15. The docking tube 15 and the bearing tube 12 automatically move upward and reset through the stored force of the reset spring 132. Then, the shaft in the transmission gear 11 is connected to the external control motor. The control motor drives the transmission gear 11 to rotate. When the transmission gear 11 rotates, it drives the sawtooth block 52 to rotate. Therefore, the tool changing frame 5 rotates stably in the bearing ring 4 through the bearing connection. This allows the other set of docking tubes 15 connected to the tapping tool 17 to rotate directly below the docking post 9. Then, as described above, the output end of the electric push rod 6 drives the support frame 7 and the servo motor 8 to move downward. The output end of the servo motor 8 drives the docking post 9 to move downward together. When the docking block 91 on the outer side below the docking post 9 is inserted into the docking groove 151 above the docking tube 15, the servo motor 8 is started. The output end of the servo motor 8 drives the docking post 9 and the docking tube 15 to rotate together. The rotation causes the tapping tool 17 installed below the connecting pipe 15 to rotate and move downwards, performing uniform tapping on the newly drilled hole. When the preset depth is reached, the output end of the electric push rod 6 drives the support frame 7 and servo motor 8 to move upwards and reset. The servo motor 8 then rotates in the opposite direction, and the tapping tool 17 retracts with the same pitch to avoid scratching the threads. (The installation method of the tapping tool 17 and drill bit 16 with the connecting pipe 15 is existing technology and will not be described in detail here.) Therefore, multiple tapping tools 17 and drill bits 16 are installed below multiple sets of connecting pipes 15. Later, by controlling the rotation of the tool changing frame 5, multiple tapping tools 17 and drill bits 16 can be selected and used without disassembling and replacing them. This makes operation convenient and can automatically, intelligently, and continuously complete two different metal processing processes. It not only improves the efficiency of drilling and tapping but also realizes a composite function, enabling the drilling and tapping machine to perform different mechanical processing, meet different usage needs, and improve intelligent operation.

[0029] Example 2: Based on Example 1, the drilling and tapping machine in this example can adsorb and collect impurities on the outside of the drill bit 16 and tapping tool 17 after they rise and reset, facilitating their next use. See attached diagram for the specific structure. Figures 9-10 As shown, a circular dust collection frame 20 is fixed to the bottom surface of the fixed frame 13, and a ring of dust collection heads is installed on the inner side wall of the dust collection frame 20. The inner diameter of the dust collection frame 20 is larger than the outer diameter of the support tube 12. An arc-shaped main dust collection tube 19 is fixed to the inner side of the blade changing frame 5, and the outer side of the main dust collection tube 19 is connected to the dust collection frame 20 through the auxiliary dust collection tube 21.

[0030] As the drill bit 16 or tapping tool 17 moves upward and resets, the main suction pipe 19 is connected to an external vacuum cleaner via a flexible hose. This causes the suction head inside the annular suction frame 20 to generate suction as the drill bit 16 or tapping tool 17 moves upward, drawing impurities from the outside of the drill bit 16 or tapping tool 17 into the suction frame 20. The impurities in the suction frame 20 then enter the external vacuum cleaner through the auxiliary suction pipe 21 and the main suction pipe 19, facilitating the next use of the drill bit 16 and tapping tool 17.

[0031] Example 3: The drilling and tapping machine in this example, based on Example 1, can increase the number of bearing tubes 12, thereby facilitating the installation and use of various tapping tools 17 and drill bits 16. For the specific structure, please refer to the attached diagram. Figure 11 As shown, the tool changing frame 5 has a rectangular plate structure, and the rear side of the tool changing frame 5 is engaged and slidably connected to the rear inner wall of the outer shell 1. The left side of the tool changing frame 5 is connected to the output end of the electric telescopic rod installed inside the outer shell 1.

[0032] The tool changer frame 5 can be designed as a rectangular plate structure, thus increasing its length. This allows for the installation of multiple bearing tubes 12 and connecting tubes 15 at equal intervals within the tool changer frame 5. Various tapping tools 17 and drill bits 16 are then sequentially installed below the connecting tubes 15. Later, the tool changer frame 5 is engaged and slidably connected to the rear inner wall of the outer casing 1. Then, by controlling the left and right sliding of the tool changer frame 5 with an electric telescopic rod, the multiple connecting tubes 15 can be moved sequentially to directly below the docking post 9. This facilitates automatic selection and use of various tapping tools 17 and drill bits 16 without manual disassembly or replacement, making operation convenient and improving the applicability of the drilling and tapping machine, thereby completing a series of tasks.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drilling and tapping machine, comprising a housing (1) stably placed in a working area, and a base (2) installed inside the housing (1), wherein a worktable assembly (3) for placing workpieces is connected above the base (2), characterized in that: The rear inner wall of the outer shell (1) is fixed with a bearing ring (4), and the inner side of the bearing ring (4) is rotatably connected with a tool changing frame (5). The inside of the tool changing frame (5) is connected with bearing tubes (12) at equal intervals through a support component. The inside of the bearing tube (12) is connected with a connecting pipe (15) through a rotation control component. The bottom of multiple sets of connecting pipes (15) is respectively connected with a drill bit (16) or a tapping tool (17). The top inner wall of the outer shell (1) is equipped with a lifting control component.

2. The drilling and tapping machine according to claim 1, characterized in that: The tool changing frame (5) is arc-shaped, and saw teeth (52) are installed at equal intervals on the outer side of the tool changing frame (5). A transmission gear (11) is meshed with the saw teeth (52) directly below the tool changing frame (5), and the shaft in the middle of the transmission gear (11) is rotatably connected to the rear side of the outer shell (1).

3. The drilling and tapping machine according to claim 1, characterized in that: The tool changer frame (5) has through slots (51) spaced at equal intervals inside. The support assembly includes a fixed frame (13) mounted on the tool changer frame (5). The fixed frame (13) is L-shaped, and a limiting rod (131) is fixed on the inner side of each of the two fixed frames (13). The limiting rod (131) passes through the inside of the through slot (51). A reset spring (132) is nested on the outer side of the limiting rod (131), and a limiting block (14) is connected through the outer side of one end of the limiting rod (131). The limiting blocks (14) are symmetrically installed on the outer side of the bearing tube (12).

4. A drilling and tapping machine according to claim 1, characterized in that: The rotation control assembly includes a limiting ring (18) installed on the outside of the connecting pipe (15), and a circular bearing groove (121) is opened on the inner side of the bearing pipe (12). The limiting ring (18) is provided on the inner side of the bearing groove (121) with a concave-convex fit. The bottom surface of the limiting ring (18) is equipped with a ball. The connecting pipe (15) and the bearing pipe (12) move up and down synchronously.

5. A drilling and tapping machine according to claim 1, characterized in that: The lifting control assembly includes an electric push rod (6) installed on the inner wall of the top of the outer shell (1), and a support frame (7) is fixedly connected below the electric push rod (6). A guide rod (10) is installed in the groove of the inner wall of the rear side of the outer shell (1), and the guide rod (10) is connected through the inner rear side of the support frame (7). At the same time, a servo motor (8) is fixed below the support frame (7), and the output end of the servo motor (8) is connected to the docking column (9).

6. A drilling and tapping machine according to claim 5, characterized in that: A docking block (91) is fixed on the outer side of the lower end of the docking post (9). A docking groove (151) is opened inside the end of the docking pipe (15) near the docking post (9). The docking groove (151) and the docking block (91) are in concave-convex fit. The docking post (9) and the docking pipe (15) rotate synchronously.

7. A drilling and tapping machine according to claim 1, characterized in that: The tool changing frame (5) forms a rotating structure with the center of the bearing ring (4) as the center.

8. A drilling and tapping machine according to claim 3, characterized in that: The bottom surface of the fixed frame (13) is fixed with a circular dust collection frame (20), and a circle of dust collection heads is installed on the inner side wall of the dust collection frame (20), and the inner diameter of the dust collection frame (20) is larger than the outer diameter of the bearing tube (12).

9. A drilling and tapping machine according to claim 8, characterized in that: The inner side of the blade changing frame (5) is fixed with an arc-shaped main suction pipe (19), and the outer side of the main suction pipe (19) is connected to the suction frame (20) through the auxiliary suction pipe (21).

10. A drilling and tapping machine according to claim 1, characterized in that: The tool changing frame (5) has a rectangular plate structure, and the rear side of the tool changing frame (5) is engaged and slidably connected to the rear inner wall of the outer shell (1), and the left side of the tool changing frame (5) is connected to the output end of the electric telescopic rod installed in the outer shell (1).

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