A fixture for a two-axis numerical control drilling machine

Abstract

The utility model provides a kind of clamp for double-shaft numerical control drilling machine, including support seat, double-shaft drilling assembly, the double-shaft drilling assembly is connected in support seat top, the double-shaft drilling assembly is used to carry out drilling operation to workpiece body;Index plate assembly, the index plate assembly is set in support seat top, the index plate assembly is used to rotate three-jaw chuck assembly and workpiece body;Three-jaw chuck assembly, the three-jaw chuck assembly is connected in index plate assembly top, the three-jaw chuck assembly is closely attached with workpiece body side, the three-jaw chuck assembly is used to clamp, fixed workpiece body.The utility model utilizes three-jaw chuck assembly can clamp, fixed workpiece body, can be directly judged the position of workpiece center degree, and clamping is stable, when double-shaft drilling assembly is carried out drilling to workpiece body, position is fixed, to improve the drilling effect of workpiece body, facilitate the drilling of workpiece body, facilitate the use of double-shaft numerical control drilling machine.

Description

Technical Field

[0001] This utility model relates to the field of CNC drilling machines, and in particular to a fixture for CNC drilling machines. Background Technology

[0002] CNC drilling machines use a computer control system to convert machining instructions into digital signals, driving servo motors, stepper motors, and other components to achieve precise movements and ensure high-precision completion of drilling, reaming, boring, and tapping processes. CNC drilling machines are high-precision hole-machining equipment that uses digital signals to control machine tool movement. They are widely used in the automotive, locomotive, shipbuilding, aerospace, and construction machinery industries, and are particularly suitable for drilling multi-hole parts such as ultra-long stacked plates, longitudinal beams, structural steel, and tubular components. Dual-axis CNC drilling machines are a type of CNC drilling machine equipped with two high-speed spindles for drilling and other machining tasks.

[0003] For dual-axis CNC drilling machines, the fixture is a crucial component, serving as an important tool for fixing, supporting, and positioning workpieces during CNC drilling. In the Chinese utility model patent "Announcement No.: CN208428007U, Title: CNC Drilling Machine Fixture," a clamping mechanism using a first, second, third, and fourth fixing plate can clamp irregular objects. The springs and rubber pads in the clamping mechanism alleviate pressure during clamping, protecting the workpiece. However, in the aforementioned application, the centering of the workpiece is difficult to determine, especially for circular workpieces. Furthermore, for annular workpieces, stable clamping using four fixing plates is challenging. Additionally, the use of springs in the application, due to their inherent characteristics, can cause workpiece wobbling during drilling, leading to displacement of the drilling position and affecting drilling quality. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect of unstable workpiece clamping in the prior art that affects the drilling quality, and to provide a fixture for a dual-axis CNC drilling machine.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This utility model provides a fixture for a dual-axis CNC drilling machine, including a support base.

[0007] A dual-axis drilling assembly is connected to the top of a support base and is used to perform drilling operations on a workpiece.

[0008] Indexing plate assembly, the indexing plate assembly is disposed above the support base, the indexing plate assembly is used to rotate the three-jaw chuck assembly and the workpiece body;

[0009] The three-jaw chuck assembly is connected to the top of the indexing plate assembly and is in close contact with the side of the workpiece. The three-jaw chuck assembly is used to clamp and fix the workpiece.

[0010] The control component is connected to the support base and is connected to the bottom of the indexing plate assembly. The control component is used to adjust the position of the indexing plate assembly and the three-jaw chuck assembly.

[0011] In this technical solution, the three-jaw chuck assembly can clamp and fix the workpiece, making it easy to directly determine the center position of the workpiece. The clamping is stable, and the position is fixed when the dual-axis drilling assembly drills the workpiece, thereby improving the drilling effect of the workpiece, facilitating the drilling process of the workpiece, and making it easier to use a dual-axis CNC drilling machine.

[0012] Preferably, the dual-axis drilling assembly includes a rotary lift module, the output end of which is connected to a rotary spindle, and the bottom end of the rotary spindle is connected to a rotary drill bit.

[0013] The rotary lift module has a display and control terminal connected to its side.

[0014] The bottom of the rotary lifting module is connected to the top of the fixed frame, and the inner walls on both sides of the fixed frame are connected with reinforcing ribs.

[0015] In this technical solution, a dual-axis drilling assembly can be used to drill holes in the workpiece.

[0016] Preferably, the indexing plate assembly includes a power module and a protective support frame. The bottom of the protective support frame is connected to the top of the control component, and an indexing head is connected to the side of the protective support frame. The output end of the power module is connected to the indexing head.

[0017] In this technical solution, the indexing plate assembly can drive the three-jaw chuck assembly and the workpiece to rotate, so that the dual-axis drilling assembly can perform drilling operations on different positions of the workpiece.

[0018] Preferably, the three-jaw chuck assembly includes a support drive disk connected to the top of the indexing head, and three jaws arranged in a circular array are slidably disposed on the top surface of the support drive disk, and the three jaws are respectively connected to the support drive disk for transmission.

[0019] In this technical solution, the three-jaw chuck assembly can be used to easily clamp and fix the workpiece.

[0020] Preferably, the claw has a stepped structure, and multiple anti-slip protrusions are provided on both the inner and outer sides of the claw.

[0021] In this technical solution, the anti-slip protrusions can increase the stability of the chuck gripping the workpiece.

[0022] Preferably, the control component includes a fixed side plate and a stud shaft, the support base has a preset opening, and the top of the support base is connected to the fixed side plate at both sides of the preset opening;

[0023] The two ends of the stud shaft are rotatably connected to two fixed side plates respectively, and a movable platform is threadedly connected to the surface of the stud shaft. The top of the movable platform is connected to the bottom of the protective support frame.

[0024] In this technical solution, the lateral position of the three-jaw chuck assembly and the workpiece can be adjusted using the control component, so that the dual-axis drilling assembly can perform drilling operations on different positions of the workpiece.

[0025] Preferably, one side of the stud shaft and one side of the preset opening are on the same vertical plane.

[0026] Preferably, one of the fixed side plates has a rotating hole, one end of the stud shaft is rotatably connected to one side of the other fixed side plate, and the other end of the stud shaft is rotatably connected to the fixed side plate through the rotating hole;

[0027] The end of the stud shaft furthest from the support is connected to the output end of the drive source.

[0028] In this technical solution, a drive source can be used to provide driving force for the rotation of the stud shaft.

[0029] Preferably, a plurality of anti-deviation rails are connected between the two fixed side plates, and the surfaces of the anti-deviation rails are slidably connected through the moving platform.

[0030] In this technical solution, the movement trajectory of the mobile station can be limited by using an anti-deviation track.

[0031] Preferably, the bottom surface of the mobile platform has two symmetrically distributed mounting grooves, the walls of the mounting grooves are connected to multiple support rollers, and the sides of the support rollers are in contact with the top surface of the support base.

[0032] In this technical solution, the moving platform can be supported by support rollers, making the moving platform more stable without affecting its movement.

[0033] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0034] The positive and progressive effects of this utility model are as follows:

[0035] This utility model utilizes a three-jaw chuck assembly to clamp and fix the workpiece, which facilitates direct determination of the workpiece's center position and provides stable clamping. When the dual-axis drilling assembly drills the workpiece, the position is fixed, thereby improving the drilling quality of the workpiece, facilitating the drilling process, and making it easier to use a dual-axis CNC drilling machine.

[0036] The indexing plate assembly can drive the three-jaw chuck assembly to rotate, and the control assembly can drive the three-jaw chuck assembly to move laterally, thereby adjusting the position of the workpiece. This allows the dual-axis drilling assembly to perform drilling operations on different positions of the workpiece, facilitating the drilling process. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural diagram of the fixture for a dual-axis CNC drilling machine according to an embodiment of the present invention, viewed from the left side.

[0038] Figure 2 for Figure 1 The diagram shown is a schematic front view of the fixture used on a dual-axis CNC drilling machine.

[0039] Figure 3 for Figure 1 The diagram shows a three-dimensional view of the overall right-side structure of the fixture used on a dual-axis CNC drilling machine.

[0040] Figure 4 for Figure 1 The diagram shows a three-dimensional structural schematic of the control assembly for a fixture used on a dual-axis CNC drilling machine.

[0041] Figure 5 for Figure 4 The diagram shown is a front view of the control assembly of the fixture used in a dual-axis CNC drilling machine.

[0042] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the fixture used on a dual-axis CNC drilling machine.

[0043] Explanation of reference numerals in the attached figures

[0044] 1. Support base;

[0045] 2. Dual-axis drilling assembly; 21. Rotary lifting module; 22. Rotary spindle; 23. Rotary drill bit; 24. Display and control terminal; 25. Fixing frame; 26. Reinforcing rib plate;

[0046] 3. Indexing plate assembly; 31. Power module; 32. Indexing head; 33. Protective support frame;

[0047] 4. Three-jaw chuck assembly; 41. Support drive disk; 42. Chucks;

[0048] 5. Workpiece body;

[0049] 6. Adjustment components; 61. Fixed side plate; 62. Stud shaft; 63. Moving stage; 64. Drive source; 65. Anti-deviation track; 66. Support rollers. Detailed Implementation

[0050] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments described herein.

[0051] Figures 1 to 6 The diagram shown is a structural schematic of an embodiment of the fixture for a dual-axis CNC drilling machine according to this invention. The fixture for a dual-axis CNC drilling machine includes a support base 1.

[0052] Dual-axis drilling assembly 2, which is connected to the top of the support base 1, is used to perform drilling operations on the workpiece 5;

[0053] Indexing plate assembly 3, which is disposed above support base 1, is used to rotate three-jaw chuck assembly 4 and workpiece body 5;

[0054] Three-jaw chuck assembly 4 is connected to the top of indexing plate assembly 3. The three-jaw chuck assembly 4 is in close contact with the side of workpiece body 5. The three-jaw chuck assembly 4 is used to clamp and fix workpiece body 5.

[0055] The control component 6 is connected to the support base 1 and is connected to the bottom of the indexing plate assembly 3. The control component 6 is used to adjust the position of the indexing plate assembly 3 and the three-jaw chuck assembly 4.

[0056] In this technical solution, the three-jaw chuck assembly 4 can clamp and fix the workpiece 5, which makes it easy to directly determine the position of the workpiece center and the clamping is stable. When the dual-axis drilling assembly 2 drills the workpiece 5, the position is fixed, thereby improving the drilling effect of the workpiece 5, facilitating the drilling of the workpiece 5, and facilitating the use of the dual-axis CNC drilling machine.

[0057] The dual-axis drilling assembly 2 includes a rotary lift module 21, the output end of which is connected to a rotary spindle 22, and the bottom end of the rotary spindle 22 is connected to a rotary drill bit 23.

[0058] The rotary lift module 21 is connected to a display control terminal 24 on its side;

[0059] The bottom of the rotary lifting module 21 is connected to the top of the fixed frame 25, and the inner walls on both sides of the fixed frame 25 are connected with reinforcing ribs 26.

[0060] In this technical solution, the workpiece body 5 can be drilled using the dual-axis drilling assembly 2.

[0061] The rotary lift module 21 may contain a motor and lifting devices, and the motor is electrically connected to the display control terminal 24, which can control the operation of the rotary lift module 21.

[0062] The motor housing drives the rotating spindle 22 and the rotating drill bit 23 to rotate, and the rotating drill bit 23 is used to drill holes in the workpiece 5.

[0063] Lifting devices include lifting cylinders, electric push rods, hydraulic lifting cylinders, and other equipment with autonomous extension and retraction functions.

[0064] The indexing plate assembly 3 includes a power module 31 and a protective support frame 33. The bottom of the protective support frame 33 is connected to the top of the control assembly 6, and the side of the protective support frame 33 is connected to the indexing head 32. The output end of the power module 31 is connected to the indexing head 32.

[0065] In this technical solution, the indexing plate assembly 3 can drive the three-jaw chuck assembly 4 and the workpiece body 5 to rotate, so that the dual-axis drilling assembly 2 can perform drilling operations on different positions of the workpiece body 5.

[0066] The working principle of the indexing plate assembly 3 is as follows: the PLC sends pulse commands to the stepper motor controller, the controller converts the commands into current signals, and inputs them sequentially into the windings of the stepper motor. The two-phase windings are energized in a cycle to generate a magnetic field. Under the action of the magnetic force, the motor rotor rotates and drives the threaded screw mechanism to rotate through the coupling, which ultimately causes the indexing head 32 to rotate.

[0067] By changing the input interval and magnitude of the pulses, the indexing head 32 can be rotated at any angle.

[0068] The three-jaw chuck assembly 4 includes a support drive disk 41, which is connected to the top of the indexing head 32. Three jaws 42 arranged in a circular array are slidably disposed on the top surface of the support drive disk 41, and the three jaws 42 are respectively connected to the support drive disk 41 for transmission.

[0069] In this technical solution, the three-jaw chuck assembly 4 can be used to easily clamp and fix the workpiece 5.

[0070] The claw 42 has a stepped structure, and multiple anti-slip protrusions are provided on both the inner and outer sides of the claw 42.

[0071] In this technical solution, the anti-slip protrusions can increase the stability of the chuck 42 in clamping the workpiece body 5.

[0072] The three-jaw chuck assembly 4 also includes a small bevel gear, a large bevel gear, a planar thread, and other structures. The back of the large bevel gear has an Archimedean spiral groove or a planar thread structure, which meshes with the three jaws 42 to form a helical drive.

[0073] The small bevel gear is driven to rotate by a pneumatic, hydraulic or electric device, which in turn drives the large bevel gear to rotate, thereby enabling the three jaws 42 to move radially in sync to achieve automatic centering.

[0074] The movement distance of the three jaws 42 is controlled by the pitch of the planar thread, ensuring that the workpiece is automatically kept concentric during clamping.

[0075] In use, depending on the shape of the workpiece 5, place the workpiece 5 inside or outside the three jaws 42, and then move the three jaws 42 so that the three jaws 42 are close to the side of the workpiece 5, thereby clamping and fixing the workpiece 5.

[0076] Then, the rotary lifting module 21 is used to electrically rotate the spindle 22 and the rotary drill bit 23 to descend, and drive the spindle 22 and the rotary drill bit 23 to rotate, so that the rotary drill bit 23 contacts the workpiece 5, and thus the rotating rotary drill bit 23 can be used to drill the workpiece 5.

[0077] Then, as needed, the power module 31 can be used to drive the indexing head 32 to rotate, thereby driving the three-jaw chuck assembly 4 and the workpiece body 5 to rotate, adjusting the drilling position of the workpiece body 5, so that the rotary drill bit 23 can be used to drill holes at different positions of the workpiece body 5.

[0078] The control component 6 includes a fixed side plate 61 and a stud shaft 62. The support base 1 has a preset opening, and the fixed side plate 61 is connected to both sides of the preset opening on the top of the support base 1.

[0079] The two ends of the stud shaft 62 are rotatably connected to two fixed side plates 61 respectively. A movable platform 63 is threadedly connected to the surface of the stud shaft 62. The top of the movable platform 63 is connected to the bottom of the protective support frame 33.

[0080] In this technical solution, the lateral position of the three-jaw chuck assembly 4 and the workpiece body 5 can be adjusted by the control component 6 so that the dual-axis drilling assembly 2 can perform drilling processing on different positions of the workpiece body 5.

[0081] One side of the stud shaft 62 is on the same vertical plane as one side of the preset opening.

[0082] One of the fixed side plates 61 has a rotating hole, one end of the stud shaft 62 is rotatably connected to one side of the other fixed side plate 61, and the other end of the stud shaft 62 is rotatably connected to the fixed side plate 61 through the rotating hole;

[0083] The end of the stud shaft 62 away from the support base 1 is connected to the output end of the drive source 64.

[0084] In this technical solution, the drive source 64 can provide driving force for the rotation of the stud shaft 62.

[0085] Multiple anti-deviation rails 65 are connected between the two fixed side plates 61, and the surface of the anti-deviation rails 65 is slidably connected through the moving platform 63.

[0086] In this technical solution, the movement trajectory of the mobile station 63 can be limited by the anti-deviation track 65.

[0087] The bottom surface of the mobile platform 63 has two symmetrically distributed mounting slots, and the walls of the mounting slots are connected to multiple support rollers 66. The sides of the support rollers 66 are in contact with the top surface of the support base 1.

[0088] In this technical solution, the support rollers 66 can be used to support the moving platform 63, making the moving platform 63 more stable without affecting its movement.

[0089] In use, depending on the drilling position of different workpieces, the drive source 64 drives the stud shaft 62 to rotate. At this time, the moving table 63 moves along the anti-deviation track 65, which in turn drives the indexing plate assembly 3 and the workpiece body 5 to move in the same direction. The position of the workpiece body 5 can be adjusted, so the dual-axis drilling assembly 2 can be used to drill holes in different positions of the workpiece body 5. The operation is flexible and it is easier to drill different types of workpieces, improving the flexibility of drilling operation of the dual-axis CNC drilling machine.

[0090] The drive source 64 is a motor or other device that can output rotational kinetic energy.

[0091] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A fixture for a dual-axis CNC drilling machine, comprising a support base (1), characterized in that, The fixture for the dual-axis CNC drilling machine further includes a dual-axis drilling assembly (2), which is connected to the top of the support base (1) and is used to perform drilling operations on the workpiece (5). Indexing plate assembly (3), which is disposed above the support base (1), is used to rotate the three-jaw chuck assembly (4) and the workpiece body (5). Three-jaw chuck assembly (4), the three-jaw chuck assembly (4) is connected to the top of the indexing plate assembly (3), the three-jaw chuck assembly (4) is in close contact with the side of the workpiece body (5), and the three-jaw chuck assembly (4) is used to clamp and fix the workpiece body (5); The control component (6) is connected to the support base (1) and is connected to the bottom of the indexing plate assembly (3). The control component (6) is used to adjust the position of the indexing plate assembly (3) and the three-jaw chuck assembly (4).

2. The fixture for a dual-axis CNC drilling machine as described in claim 1, characterized in that: The dual-axis drilling assembly (2) includes a rotary lift module (21), the output end of which is connected to a rotary spindle (22), and the bottom end of the rotary spindle (22) is connected to a rotary drill bit (23). The rotary lift module (21) has a display control terminal (24) connected to its side. The bottom of the rotary lifting module (21) is connected to the top of the fixed frame (25), and the inner walls on both sides of the fixed frame (25) are connected with reinforcing ribs (26).

3. The fixture for a dual-axis CNC drilling machine as described in claim 1, characterized in that: The indexing plate assembly (3) includes a power module (31) and a protective support frame (33). The bottom of the protective support frame (33) is connected to the top of the control assembly (6). The side of the protective support frame (33) is connected to an indexing head (32). The output end of the power module (31) is connected to the indexing head (32).

4. The fixture for a dual-axis CNC drilling machine as described in claim 1, characterized in that: The three-jaw chuck assembly (4) includes a support drive disk (41), which is connected to the top of the indexing head (32). The top surface of the support drive disk (41) is slidably provided with three jaws (42) arranged in a ring array, and the three jaws (42) are respectively connected to the support drive disk (41) for transmission.

5. The fixture for a dual-axis CNC drilling machine as described in claim 4, characterized in that: The claw (42) has a stepped structure, and multiple anti-slip protrusions are provided on both the inner and outer sides of the claw (42).

6. The fixture for a dual-axis CNC drilling machine as described in claim 1, characterized in that: The control component (6) includes a fixed side plate (61) and a stud shaft (62). The support base (1) has a preset opening, and the top of the support base (1) is connected to the fixed side plate (61) on both sides of the preset opening. The two ends of the stud shaft (62) are rotatably connected to two fixed side plates (61), and a movable platform (63) is threadedly connected to the surface of the stud shaft (62). The top of the movable platform (63) is connected to the bottom of the protective support frame (33).

7. The fixture for a dual-axis CNC drilling machine as described in claim 6, characterized in that: One side of the stud shaft (62) is on the same vertical plane as one side of the preset opening.

8. The fixture for a dual-axis CNC drilling machine as described in claim 6, characterized in that: One of the fixed side plates (61) has a rotating hole, one end of the stud shaft (62) is rotatably connected to one side of the other fixed side plate (61), and the other end of the stud shaft (62) is rotatably connected to the fixed side plate (61) through the rotating hole; The end of the stud shaft (62) away from the support (1) is connected to the output end of the drive source (64).

9. The fixture for a dual-axis CNC drilling machine as described in claim 6, characterized in that: Multiple anti-deviation rails (65) are connected between the two fixed side plates (61), and the surface of the anti-deviation rails (65) is slidably connected through the moving platform (63).

10. The fixture for a dual-axis CNC drilling machine as described in claim 6, characterized in that: The bottom surface of the mobile platform (63) has two symmetrically distributed mounting slots, and the walls of the mounting slots are connected to multiple support rollers (66). The sides of the support rollers (66) are in contact with the top surface of the support base (1).

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