Double-station numerical control drilling machine

Abstract

The utility model relates to the technical field of numerical control machine tools, and discloses a double-station numerical control drilling machine which comprises a machine frame, a large workbench, a small workbench, a drill bit and a driving device, the large workbench and the small workbench are arranged on the machine frame at intervals in the first direction, the large workbench is provided with a first station, the small workbench is provided with a second station, and the drill bit is arranged on the first station. The first station and the second station are both used for bearing and positioning a single workpiece, and the bearing area of the first station is larger than that of the second station; the drill bit is arranged on one side of the large workbench or the small workbench, the driving device is arranged on the rack and is in transmission connection with the drill bit, and the driving device is used for driving the drill bit to move relative to the large workbench or the small workbench so as to drill the workpiece on the first station or the second station. According to the utility model, the problem of how to carry out continuous drilling operation on workpieces with different sizes can be solved.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, specifically to a dual-station CNC drilling machine. Background Technology

[0002] In modern manufacturing, drilling is a critical process in metal processing and precision assembly, and its efficiency directly impacts the overall production line capacity. To meet the processing needs of workpieces with varying sizes, existing drilling equipment generally adopts a single large-size worktable design, expanding the processing range to accommodate drilling operations on both large and small workpieces. However, this design has revealed significant efficiency bottlenecks in practical applications:

[0003] Existing drilling equipment employs a "single-station serial operation" mode, meaning that after drilling a workpiece, the machine must be completely stopped, and manual intervention is required to change the workpiece and reposition it. For example, in a typical scenario, when switching from processing small electronic brackets (size <100mm) to large automotive sheet metal parts (size >800mm), the operator must manually remove the drilled workpiece, load the new workpiece to be drilled, and adjust the positioning fixture and machining coordinate system before restarting the machine for the next drilling cycle. This process, including the positioning and calibration step alone, takes 8-12 minutes, with downtime exceeding 40% of a single processing cycle. Furthermore, this intermittent "processing-stopping-adjustment" mode not only reduces the equipment's OEE (Overall Equipment Effectiveness) by approximately 35%, but also exacerbates mechanical wear due to frequent start-stop cycles, further reducing the equipment's lifespan.

[0004] To overcome this challenge, it is necessary to develop a dual-station CNC drilling machine to enable continuous drilling operations on workpieces of different sizes. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a dual-station CNC drilling machine, which can at least solve the technical problem of how to perform continuous drilling operations on workpieces of different sizes.

[0007] (II) Technical Solution

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a dual-station CNC drilling machine, comprising:

[0009] frame;

[0010] Large and small worktables are arranged at intervals on the frame along the first direction. The large worktable has a first station and the small worktable has a second station. Both the first and second stations are used to support and position a single workpiece. The supporting area of ​​the first station is larger than that of the second station.

[0011] The drill bit and drive unit are located on one side of the large or small worktable. The drive unit is located on the frame and is connected to the drill bit for transmission. The drive unit is used to drive the drill bit to move relative to the large or small worktable in order to drill the workpiece at the first or second station.

[0012] Further configuration: the aforementioned large or small worktable is configured as a fixed table, and the small or large worktable is configured as a rotary table.

[0013] Further configuration involves setting the large worktable as a fixed table and the small worktable as a rotary table.

[0014] Further configuration: the aforementioned rotary table includes a rotary drive mechanism and a rotary base. The rotary base is provided with a first workstation or a second workstation. The rotary drive mechanism is mounted on the frame. The output end of the rotary drive mechanism is connected to the rotary base. The rotary drive mechanism is used to drive the rotary base to rotate.

[0015] Furthermore, the aforementioned dual-station CNC drilling machine also includes:

[0016] Two clamping devices are respectively set on the large worktable and the small worktable. The clamping devices are used to clamp or release the workpieces at the corresponding workstations.

[0017] Two pressing devices, including pressing heads and lifting mechanisms, are located above the large and small worktables respectively. The lifting mechanism is mounted on the frame and connected to the pressing heads via a transmission. The lifting mechanism is used to drive the pressing heads to move up and down, pressing or releasing the workpieces at the corresponding workstations.

[0018] Furthermore, the aforementioned dual-station CNC drilling machine also includes a tool magazine, which is fixed on the machine frame. The tool magazine, the large worktable, and the small worktable are arranged along the first direction.

[0019] Further configuration: the aforementioned drive device includes an X-axis drive mechanism, a Y-axis drive mechanism, and a Z-axis drive mechanism. The X-axis drive mechanism is mounted on the frame. The output end of the X-axis drive mechanism is connected to the Y-axis drive mechanism. The output end of the Y-axis drive mechanism is connected to the Z-axis drive mechanism. The output end of the Z-axis drive mechanism is connected to the drill bit.

[0020] The X-axis drive mechanism is used to drive the drill bit to move along the first direction, the Y-axis drive mechanism is used to drive the drill bit to move along the second direction, the second direction and the first direction are two mutually perpendicular directions on the horizontal plane, and the Z-axis drive mechanism is used to drive the drill bit to move along the vertical direction.

[0021] (III) Beneficial Effects

[0022] Compared with the prior art, the dual-station CNC drilling machine provided by this utility model has the following advantages:

[0023] Beneficial effects:

[0024] When using this dual-station CNC drilling machine, firstly, a large workpiece and a small workpiece are placed on the first and second stations respectively. Then, the drive device drives the drill bit to drill holes in the workpieces on the first and second stations sequentially. After drilling the large workpiece on the first station, the drive device and drill bit work together to drill the small workpiece on the second station. Simultaneously, the large workpiece on the first station can be removed and replaced with a new large workpiece to be drilled. After drilling the small workpiece on the second station, the above steps are repeated: the drive device and drill bit work together to drill the large workpiece on the first station, and the small workpiece on the second station can be removed and replaced with a new small workpiece to be drilled, and so on. It can be seen that this dual-station CNC drilling machine has two stations with different bearing areas, enabling continuous and uninterrupted drilling operations on two workpieces of different sizes without stopping the machine. Furthermore, the dual-station CNC drilling machine uses two stations with different bearing areas to hold and position workpieces of different sizes, facilitating rapid workpiece positioning and thus improving overall processing efficiency. Attached Figure Description

[0025] Figure 1 This is a perspective view of the dual-station CNC drilling machine in the embodiment;

[0026] Figure 2 This is a schematic diagram of the structure of the frame, large worktable, small worktable, drill bit, and drive device in the embodiment;

[0027] Figure 3 This is a schematic diagram of the structure of the large worktable, small worktable, clamping device, and pressing device in the embodiment.

[0028] Icon labels:

[0029] 1. Rack;

[0030] 2. Large workbench; 21. First workstation;

[0031] 3. Small workbench; 31. Second workstation;

[0032] 4. Drill bit;

[0033] 5. Drive mechanism; 51. X-axis drive mechanism; 52. Y-axis drive mechanism; 53. Z-axis drive mechanism;

[0034] 61. Rotary drive mechanism; 62. Rotary seat;

[0035] 7. Clamping device; 71. Clamping arm; 72. Clamping space;

[0036] 8. Pressing device; 81. Pressing head; 82. Lifting mechanism;

[0037] 9. Tool magazine. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] This invention provides a dual-station CNC drilling machine to solve the problem of how to perform continuous drilling operations on workpieces of different sizes.

[0040] See Figure 1 As shown, Figure 1 The image shown is a perspective view of a dual-station CNC drilling machine in the embodiment. The dual-station CNC drilling machine includes a frame 1, a large worktable 2, a small worktable 3, a drill bit 4, and a drive device 5.

[0041] Both the large worktable 2 and the small worktable 3 are mounted on the frame 1, and are arranged at intervals along a first direction. The large worktable 2 has a first workstation 21, and the small worktable 3 has a second workstation 31. Both the first workstation 21 and the second workstation 31 are used to support and position a single workpiece. The supporting area of ​​the first workstation 21 is larger than that of the second workstation 31.

[0042] The drill bit 4 is located on one side of the large worktable 2 or the small worktable 3. The drive unit 5 is mounted on the frame 1 and is connected to the drill bit 4 for transmission. The drive unit 5 is used to drive the drill bit 4 to move relative to the large worktable 2 or the small worktable 3 to drill holes in the workpiece at the first station 21 or the second station 31.

[0043] When using the dual-station CNC drilling machine described above, firstly, the large workpiece and the small workpiece are placed on the first station 21 and the second station 31, respectively. Then, the drive device 5 drives the drill bit 4 to drill holes in the workpieces on the first station 21 and the second station 31 in sequence. After drilling the large workpiece on the first station 21, the drive device 5 and the drill bit 4 work together to drill the small workpiece on the second station 31. At the same time, the large workpiece on the first station 21 can be removed and replaced with a new large workpiece to be drilled. After drilling the small workpiece on the second station 31, the above steps are repeated. The drive device 5 and the drill bit 4 work together to drill the large workpiece on the first station 21, and at the same time, the small workpiece on the second station 31 can be removed and replaced with a new small workpiece to be drilled. This process is repeated continuously. It can be seen that this dual-station CNC drilling machine has two stations with different bearing areas, which can perform continuous and uninterrupted drilling operations on two workpieces of different sizes without stopping the machine. In addition, this dual-station CNC drilling machine uses two stations with different bearing areas to carry and position workpieces of different sizes, which facilitates rapid workpiece positioning and improves overall processing efficiency.

[0044] The aforementioned drill bit 4 can be composed of existing drill bits, a tool holder, and a rotating mechanism. Thus, a suitable drill bit can be selected according to the actual required hole diameter and mounted on the tool holder. During drilling, the rotating mechanism drives the tool holder and the drill bit on it to rotate together, while the drive device 5 drives the drill bit 4 to move along the drilling depth direction, thereby achieving drilling of the workpiece. Furthermore, the drill bit 4 can be replaced by other types of cutting tools such as milling cutters or taps. Therefore, this dual-station CNC drilling machine can not only perform continuous drilling operations on workpieces of different sizes, but also perform continuous milling or tapping operations on workpieces of different sizes, integrating multiple functions such as drilling, milling, and tapping into one machine.

[0045] In one embodiment of the large worktable 2 and the small worktable 3, the large worktable 2 or the small worktable 3 is configured as a fixed table, and the small worktable 3 or the large worktable 2 is configured as a rotary table. The fixed table has lower cost and is convenient for processing workpieces requiring only single-sided drilling, while the rotary table is convenient for processing workpieces requiring multi-sided drilling. Therefore, the combination of the fixed table and the rotary table can meet more drilling needs and improve the applicability of this dual-station CNC drilling machine.

[0046] In addition to the above-described embodiments, the large worktable 2 and the small worktable 3 can also be configured as fixed tables or rotating tables. These embodiments can be selected according to the actual drilling requirements.

[0047] See Figure 1 and Figure 2 As shown, Figure 2This is a schematic diagram of the structure of the frame, large worktable, small worktable, drill bit, and drive device in the embodiment. Based on the above embodiment, the large worktable 2 is configured as a fixed platform, and the small worktable 3 is configured as a rotary platform. Thus, compared to the implementation where the large worktable 2 rotates, the implementation where the small worktable 3 rotates has the advantage that the rotation range of the small worktable 3 is smaller than that of the large worktable 2, which effectively reduces the space occupied by the dual-station CNC drilling machine.

[0048] See Figure 2 As shown, in one embodiment of the rotary table, the rotary table includes a rotary drive mechanism 61 and a rotary base 62. The rotary base 62 is provided with a first workstation 21 or a second workstation 31. The rotary drive mechanism 61 is mounted on the frame 1 by means of screwing or welding, and the output end of the rotary drive mechanism 61 is connected to the rotary base 62 by means of screwing or welding. The rotary drive mechanism 61 is used to drive the rotary base 62 to rotate. Thus, when the rotary drive mechanism 61 is activated, it can drive the rotary base 62 and the workpiece on it to rotate together, realizing the rotation and flipping of the workpiece on the rotary table. Combined with the drive device 5 and the drill bit 4, drilling can be performed on any side of the workpiece on the rotary table.

[0049] The aforementioned rotary drive mechanism 61 can use existing servo motors or indexing plates, and its output end is connected to the rotary base 62 through a transmission mechanism such as gears.

[0050] See Figure 3 As shown, Figure 3 This is a schematic diagram of the structure of the large worktable, small worktable, clamping device, and pressing device in the embodiment. Based on any of the above embodiments, the dual-station CNC drilling machine further includes two clamping devices 7 and two pressing devices 8. The two clamping devices 7 are respectively installed on the large worktable 2 and the small worktable 3. The clamping devices 7 are used to clamp or release the workpieces at the corresponding workstations. The pressing devices 8 include a pressing head 81 and a lifting mechanism 82. The pressing heads 81 of the two pressing devices 8 are respectively located above the large worktable 2 and the small worktable 3. The lifting mechanism 82 is set on the frame 1 by means of screwing or welding, and is connected to the pressing head 81 in a transmission manner. The lifting mechanism 82 is used to drive the pressing head 81 to move up and down, pressing or releasing the workpieces at the corresponding workstations. In this way, the clamping devices 7 can achieve the positioning function of the workpiece, effectively preventing the workpiece from shifting or being damaged due to rotation or vibration generated by drilling; while the pressing devices 8 can further fix the workpiece, thereby further preventing the workpiece from shifting during the drilling process.

[0051] The aforementioned lifting mechanism 82 can use existing telescopic drive mechanisms such as telescopic cylinders or telescopic poles, or it can use existing linear displacement drive mechanisms such as servo motor-lead screw nut linear modules or servo linear motors.

[0052] See Figure 3As shown, in one embodiment of the clamping device 7, the clamping device 7 includes clamping arms 71 and clamping arm drive members. The clamping arms 71 are slidably connected to the corresponding worktables, and the clamping arms 71 are arranged in pairs and symmetrically with each other. A clamping space 72 is formed between each clamping arm 71. The clamping arm drive member (not shown in the figure) is mounted on the rotary seat 62 and is drively connected to at least two clamping arms 71. The clamping arm drive member is used to drive at least two clamping arms 71 to slide synchronously toward or away from the symmetrical center line of the corresponding worktables, so as to shrink or expand the clamping space 72. It can be seen that the size of the clamping space 72 of the clamping device 7 can be adjusted according to the shape and size of different workpieces to ensure the stability and accuracy of the workpiece during the drilling process.

[0053] The clamping arm drive mechanism corresponding to the large worktable 2 can use existing bidirectional linear displacement drive mechanisms such as servo motor-bidirectional screw mechanism, while the clamping arm drive mechanism corresponding to the small worktable 3 can use existing clamping jaw or chuck mechanism.

[0054] In addition to automatically positioning the workpiece at the workstation using the clamping device 7 mentioned above, the dual-station CNC drilling machine can also position the workpiece using a limiting groove or limiting block that is compatible with the workpiece to be drilled.

[0055] See Figure 1 As shown, based on any of the above embodiments, the dual-station CNC drilling machine also includes a tool magazine 9. The tool magazine 9 is fixed to the frame 1 by means of screws or welding, and the tool magazine 9, the large worktable 2, and the small worktable 3 are arranged along the first direction. In this way, the drive device 5 drives the drill bit 4 to move along the first direction, which not only allows the drill bit 4 to switch positions relative to different worktables in turn, but also allows the drill bit 4 to be positioned relative to the tool magazine 9, so as to facilitate rapid switching of the drill bit 4 and continuous processing of the workpiece.

[0056] The tool magazine 9 can be equipped with multiple tool storage slots, which can be used to store various tools such as drills, milling cutters, or taps. Furthermore, the tool magazine 9 can be equipped with an existing tool changing device to achieve automatic tool changing.

[0057] See Figure 2As shown, in one embodiment of the drive device 5, the drive device 5 includes an X-axis drive mechanism 51, a Y-axis drive mechanism 52, and a Z-axis drive mechanism 53. The X-axis drive mechanism 51 is mounted on the frame 1 by means of screwing or welding. The output end of the X-axis drive mechanism 51 is connected to the Y-axis drive mechanism 52, the output end of the Y-axis drive mechanism 52 is connected to the Z-axis drive mechanism 53, and the output end of the Z-axis drive mechanism 53 is connected to the drill bit 4. Specifically, the X-axis drive mechanism 51 drives the drill bit 4 to move along a first direction; the Y-axis drive mechanism 52 drives the drill bit 4 to move along a second direction, which is perpendicular to the first direction on a horizontal plane; and the Z-axis drive mechanism 53 drives the drill bit 4 to move vertically. Thus, the drive device 5, through the cooperation of the X-axis drive mechanism 51, the Y-axis drive mechanism 52, and the Z-axis drive mechanism 53, can drive the drill bit 4 to drill at any position on any workpiece at any station.

[0058] The X-axis drive mechanism 51, Y-axis drive mechanism 52 and Z-axis drive mechanism 53 mentioned above can all use existing servo motor-screw nut linear modules or servo linear motors and other linear displacement drive mechanisms to achieve precise control of the drill bit 4's movement.

[0059] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-station CNC drilling machine, characterized in that, include: frame; A large workbench and a small workbench are arranged at intervals along a first direction on the frame. The large workbench is provided with a first station, and the small workbench is provided with a second station. Both the first station and the second station are used to support and position a single workpiece. The supporting area of ​​the first station is greater than that of the second station. The drill bit and the drive device are provided. The drill bit is located on one side of the large or small worktable, and the drive device is located on the frame and is connected to the drill bit for transmission. The drive device is used to drive the drill bit to move relative to the large or small worktable in order to drill holes in the workpiece at the first or second station.

2. The dual-station CNC drilling machine according to claim 1, characterized in that, The large worktable or the small worktable is configured as a fixed table, and the small worktable or the large worktable is configured as a rotary table.

3. The dual-station CNC drilling machine according to claim 2, characterized in that, The large worktable is configured as the fixed platform, and the small worktable is configured as the rotary platform.

4. The dual-station CNC drilling machine according to claim 2 or 3, characterized in that, The rotary table includes a rotary drive mechanism and a rotary base. The rotary base is provided with a first workstation or a second workstation. The rotary drive mechanism is located on the frame. The output end of the rotary drive mechanism is connected to the rotary base. The rotary drive mechanism is used to drive the rotary base to rotate.

5. The dual-station CNC drilling machine according to any one of claims 1-3, characterized in that, The dual-station CNC drilling machine also includes: Two clamping devices are respectively set on the large worktable and the small worktable, and the clamping devices are used to clamp or release the workpieces on the corresponding workstations. Two pressing devices, each including a pressing head and a lifting mechanism, are provided. The pressing heads of the two pressing devices are located above the large worktable and the small worktable, respectively. The lifting mechanism is mounted on the frame and is connected to the pressing head via a transmission mechanism. The lifting mechanism is used to drive the pressing head to move up and down, pressing or releasing the workpiece at the corresponding workstation.

6. The dual-station CNC drilling machine according to any one of claims 1-3, characterized in that, The dual-station CNC drilling machine also includes a tool magazine, which is fixed on the frame. The tool magazine, the large worktable, and the small worktable are arranged along the first direction.

7. The dual-station CNC drilling machine according to any one of claims 1-3, characterized in that, The drive device includes an X-axis drive mechanism, a Y-axis drive mechanism, and a Z-axis drive mechanism. The X-axis drive mechanism is mounted on the frame. The output end of the X-axis drive mechanism is connected to the Y-axis drive mechanism. The output end of the Y-axis drive mechanism is connected to the Z-axis drive mechanism. The output end of the Z-axis drive mechanism is connected to the drill bit. The X-axis drive mechanism is used to drive the drill bit to move along the first direction, the Y-axis drive mechanism is used to drive the drill bit to move along the second direction, the second direction and the first direction are two mutually perpendicular directions on the horizontal plane, and the Z-axis drive mechanism is used to drive the drill bit to move along the vertical direction.

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