Numerical control drilling machine for hardware fitting machining

Abstract

The invention relates to the technical field of machining, in particular to a numerical control drilling machine for hardware fitting machining, which comprises an annular bracket, a plurality of groups of circumferentially arranged support shells are rotatably mounted at the lower end of the annular bracket, and transmission assemblies for transmitting kinetic energy are mounted in the plurality of groups of support shells; a transmission assembly is fixedly installed at the upper end of the annular support, a drill bit assembly is fixedly installed at the output end of the transmission assembly, an adjusting assembly matched with the multiple sets of supporting shells is rotatably installed at the upper end of the annular support, and a driving assembly used for driving the transmission assembly is fixedly installed above the annular support. The defect that in the prior art, the distance between drill bits cannot be changed is overcome.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a numerical control drilling machine for processing hardware accessories. Background Art

[0002] In order to improve processing efficiency, some existing CNC drilling machines for hardware accessories processing will adopt a multi-drill head design;

[0003] For example, a CNC drilling machine for hardware accessories processing proposed in Chinese patent application number: "201921608863.1" has multiple sets of drill bits in a circular array to improve processing efficiency; another example is a CNC drilling machine for hardware accessories processing proposed in Chinese patent application number: "CN202110618611.2", which can process multiple sets of parts at the same time through multiple sets of drill bits, thereby improving production efficiency;

[0004] For example, in the CNC drilling machine mentioned above, which increases efficiency by installing multiple sets of drill bit arrays, the drill bit positions and the spacing between multiple sets of drill bits cannot be changed. When faced with different cutting hole distances or processing parts of different specifications, they cannot be adjusted, thus forming a "special head for special purpose" scenario, which increases production costs and reduces the flexibility of the equipment.

[0005] Based on the shortcomings of the prior art listed above, a new multi-group drill bit array structure is proposed in this case, so that the spacing between the multiple groups of drill bits can be adjusted to improve the flexibility of use, reduce the situation of "special head for special purpose", and reduce equipment costs. Summary of the invention

[0006] The purpose of the present invention is to solve the disadvantages in the prior art that the distance between drill bits cannot be changed, and to propose a CNC drilling machine for processing hardware accessories.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A CNC drilling machine for processing hardware accessories is designed, comprising an annular bracket, wherein a plurality of groups of support shells arranged in a circumferential manner are rotatably mounted on the lower end of the annular bracket, a transmission assembly for transmitting kinetic energy is installed inside the plurality of groups of support shells, a drill assembly is fixedly mounted on the output end of the transmission assembly, an adjustment assembly cooperating with the plurality of groups of support shells is rotatably mounted on the upper end of the annular bracket, and a drive assembly for driving the transmission assembly is fixedly mounted above the annular bracket;

[0009] One end of the support shell is rotatably connected to the annular bracket, the input end and the output end of the transmission assembly are respectively located on the left and right sides of the support shell, and the driving assembly is located above the adjusting assembly.

[0010] Preferably, the support shell is a teardrop-shaped structure, the diameter of one side of the support shell is larger than the diameter of the other side, and the end of the support shell with a smaller diameter is the output end of the transmission assembly.

[0011] Preferably, the transmission assembly includes two groups of rotating shafts, and shell rotating holes are opened inwardly at both ends of the left and right ends of the outer end surface of the supporting shell. The two groups of rotating shafts are rotatably installed in the inside of the two groups of shell rotating holes respectively, and the two groups of rotating shafts are integrally formed with spline rods at one end facing the inside of the supporting shell. The peripheries of the two groups of spline rods are movably sleeved with transmission wheels, and a transmission belt is connected between the two groups of transmission wheels.

[0012] Preferably, the drill bit assembly includes a supporting rotating rod welded to a group of the transmission wheels located at the output end, the lower end of the supporting rotating rod is open, a sliding rotating rod extending downward is slidably installed inside the supporting rotating rod, a drill bit is movably inserted into the lower end of the sliding rotating rod, an elastic part is elastically connected to the sliding rotating rod and the inside of the supporting rotating rod, and a locking device is movably clamped between the sliding rotating rod and the supporting rotating rod.

[0013] Preferably, the locking device includes multiple groups of snap-in spring pieces, a first rotating rod convex ring is integrally formed at the opening at the lower end of the supporting rotating rod, and a second rotating rod convex ring is integrally formed at the upper end of the sliding rotating rod, the first rotating rod convex ring and the second rotating rod convex ring are movably abutted against each other up and down, and the inner end surface circumference of the first rotating rod convex ring is provided with multiple groups of arc-shaped placement grooves, and the interiors of the multiple groups of arc-shaped placement grooves are rotatably installed with snap-in spring pieces through structures such as rotating shafts, and the outer circumference of the sliding rotating rod is provided with multiple groups of snap-in grooves that cooperate with the snap-in spring pieces.

[0014] Preferably, the main body of the clamping spring piece is an arc-shaped structure, the front end of the clamping spring piece is a ratchet structure, and one end of the clamping spring piece is rotatably mounted inside the arc-shaped placement groove.

[0015] Preferably, the outer movable sleeve of the lower end of the supporting rotating rod is provided with a functional ring, and a plurality of groups of bristles are fixedly inserted on the inner end face of the functional ring. The inside of the functional ring and the inner side of the snap-in groove are both provided with permanent magnetic rings, and the magnetic strength of the permanent magnetic ring located inside the functional ring is greater than that of the permanent magnetic ring located inside the snap-in groove.

[0016] Preferably, the peripheral movable sleeve of the lower end of the supporting rotating rod is provided with a functional collar, the inner end surface of the functional collar is fixedly plugged with multiple groups of bristles, and the peripheral end surface of the supporting rotating rod is embedded with a weak magnet.

[0017] Preferably, a shell swivel is integrally formed on the periphery of a group of shell rotating holes located at the output end of the transmission assembly on the upper end face of the support shell, and the upper end of the shell swivel can be rotatably connected to the inside of the annular bracket, and the adjustment assembly includes a transmission gear ring, and the transmission gear ring is fixedly installed on the upper end of the shell swivel, and the transmission gear ring and the support shell play a fixing role in the up and down sliding clamping of the annular bracket, and the inner and outer sides of the transmission gear ring are meshed with adjustment gear rings, and the upper end face of the annular bracket is rotatably connected to a positioning wheel for sleeved with the support adjustment gear ring.

[0018] Preferably, the driving assembly includes multiple groups of transmission gears, the lower ends of the transmission gears are fixedly connected to a group of rotating shafts located at the input end, the multiple groups of transmission gears are rotatably installed inside the fixed frame, and multiple groups of gear groups meshing with the transmission gears are rotatably installed inside the fixed frame. A driving motor for driving the gear group is fixedly installed in the middle of the fixed frame, and at least one group of telescopic devices is fixedly installed on the upper end surface of the fixed frame.

[0019] The invention provides a CNC drilling machine for processing hardware accessories, which has the following beneficial effects:

[0020] Through the annular bracket and the supporting shell, one end of the supporting shell is rotatably connected to the annular bracket, so that the supporting shell can rotate along the circumference of the annular bracket under the drive of the adjustment component, thereby driving the drill bit to form displacement, and multiple groups of supporting shells can rotate synchronously, so that the drill bit structure is particularly suitable for the use scenario of equidistant cutting, and the flexibility of the use of the drill bit is improved;

[0021] Through the drill bit assembly provided, the locking device provided in the drill bit assembly can protect the drill bit. When the drill bit rotates in the opposite direction due to misoperation, the lock is released to avoid damage to the drill bit, thereby improving the fault tolerance of the equipment and facilitating the training of novices. When the locking device is unlocked, the drill bit can also abut against an external object under the drive of an external force or a telescopic device, so that the drill bit is retracted into the supporting rotating rod and the drill bit is cleaned through a functional collar, thereby improving the cleanliness of the drill bit and thus improving the cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of the main body;

[0023] Figure 2 Schematic diagram of the side cross-sectional structure of the main body;

[0024] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of area A;

[0025] Figure 4 is a schematic diagram of a side cross-sectional structure of a drill bit assembly;

[0026] Figure 5 for Figure 4 The A area and the B area are enlarged structural diagram;

[0027] Figure 6 Schematic diagram of the three-dimensional structure of the annular bracket;

[0028] Figure 7 A schematic diagram of the side cross-sectional structure of the support shell;

[0029] Figure 8 Schematic diagram of the explosive dismantling structure of the supporting shell.

[0030] In the figure:

[0031] 1. Ring bracket; 2. Support shell; 201. Shell rotating hole; 202. Shell rotating ring; 3. Rotating shaft; 301. Spline rod; 302. Transmission wheel; 303. Transmission belt; 4. Support rotating rod; 401. First rotating rod convex ring; 402. Snap-on spring sheet; 403. Sliding rotating rod; 4031. Second rotating rod convex ring; 4032. Snap-on slot; 404. Drill bit; 405. Functional collar; 406. Elastic member;

[0032] 5. Transmission gear ring; 501. Adjustment gear ring; 502. Positioning wheel; 6. Transmission gear; 601. Gear set; 7. Fixed frame; 8. Driving motor; 9. Telescopic device. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Reference Figure 1-8 , here is an example of how the subject is implemented:

[0035] A CNC drilling machine for processing hardware accessories, comprising an annular bracket 1 that serves as a main body support and component installation function, a plurality of groups of circumferentially arranged support shells 2 are rotatably installed at the lower end of the annular bracket 1, a transmission assembly for transmitting kinetic energy is installed inside the plurality of groups of support shells 2, a drill assembly for hardware processing is fixedly installed at the output end of the transmission assembly, an adjustment assembly that cooperates with the plurality of groups of support shells 2 so that the support shells 2 can rotate along the circumference of the annular bracket 1 is rotatably installed at the upper end of the annular bracket 1, a drive assembly for driving the transmission assembly is fixedly installed above the annular bracket 1 through structures such as bolts; one end of the support shell 2 is rotatably connected to the annular bracket 1, the input end and the output end of the transmission assembly are respectively located on the left and right sides of the support shell 2, and the drive assembly is located above the adjustment assembly;

[0036] For further reference, Figure 8 The support shell 2 is a teardrop-shaped structure, that is, one side of the support shell 2 has a larger diameter and the other side has a smaller diameter. The end of the support shell 2 with a smaller diameter is the output end of the transmission assembly. This design makes the spacing between the drill bit assemblies arranged at the ends of the multiple groups of support shells 2 smaller, thereby improving the adjustment range.

[0037] Based on the above content, since one end of the support shell 2 is rotatably connected to the annular bracket 1, the support shell 2 can rotate along the circumference of the annular bracket 1 under the drive of the adjustment component, and the input end and the output end of the transmission component are respectively located on the left and right sides of the support shell 2. Therefore, the drill bit assembly coordinated with the transmission assembly can also rotate along the circumference of the annular bracket 1 to adjust its position, and then the position of the drill bit assembly can be adjusted according to different processing requirements.

[0038] Reference Figure 3 , 5 , 7, 8, here are examples of implementation methods of the transmission assembly:

[0039] The transmission assembly includes two groups of rotating shafts 3. The left and right ends of the outer end surface of the supporting shell 2 are penetrated inwardly with shell rotating holes 201. The two groups of rotating shafts 3 are rotatably installed in the two groups of shell rotating holes 201 respectively. The ends of the two groups of rotating shafts 3 facing the inside of the supporting shell 2 are integrally formed with spline rods 301. The peripheries of the two groups of spline rods 301 are movably sleeved with transmission wheels 302. The two groups of transmission wheels 302 are connected by a transmission belt 303.

[0040] Based on the above content, the transmission structure of the transmission assembly enables the support housing 2 to rotate; the sleeve structure of the spline rod 301 and the transmission wheel 302 makes it easy to maintain the transmission belt 303; in order to improve the transmission effect, a tensioning wheel that cooperates with the transmission belt 303 may also be provided inside the support housing 2; Figure 8 One end of the outer side of the spline rod 301 may be threadedly connected with a bolt or other structure for abutting and fixing the transmission wheel 302 .

[0041] Reference Figure 5 , 7 8. Here is an example of an implementation of the drill bit assembly:

[0042] The drill bit assembly includes a support rotating rod 4 welded to a group of transmission wheels 302 located at the output end, the lower end of the support rotating rod 4 is open, a sliding rotating rod 403 extending to the bottom is slidably installed inside the support rotating rod 4, a drill bit 404 is movably inserted at the lower end of the sliding rotating rod 403, an elastic member 406 is elastically connected between the sliding rotating rod 403 and the support rotating rod 4, and a locking device is movably clamped between the sliding rotating rod 403 and the support rotating rod 4;

[0043] Based on the above content, the transmission wheel 302 can drive the support rod 4 to rotate along its own central axis, and the support rod 4 further drives the sliding rod 403 and the drill bit 404 to rotate along its own central axis, so that the drill bit 404 can play a drilling role; the elastic member 406 should be a spring structure; the lower end of the sliding rod 403 can be a common drill bit 404 fixing structure;

[0044] Furthermore, the locking device includes multiple groups of snap-on spring pieces 402, a first rotating rod convex ring 401 is integrally formed at the opening of the lower end of the supporting rotating rod 4, a second rotating rod convex ring 4031 is integrally formed at the upper end of the sliding rotating rod 403, the first rotating rod convex ring 401 and the second rotating rod convex ring 4031 are movably abutted up and down, multiple groups of arc-shaped placement grooves are arranged on the circumference of the inner end surface of the first rotating rod convex ring 401, and the insides of the multiple groups of arc-shaped placement grooves are all rotatably installed with snap-on spring pieces 402 through structures such as rotating shafts, and multiple groups of snap-on slots 4032 that cooperate with the snap-on spring pieces 402 are arranged on the outer circumference of the sliding rotating rod 403, so that the snap-on spring pieces 402 can be snapped into the insides of the snap-on slots 4032;

[0045] Further, refer to Figure 8 The main body of the snap-on spring piece 402 is an arc-shaped structure, and the front end of the snap-on spring piece 402 is a hook structure similar to a ratchet claw. One end of the snap-on spring piece 402 is rotatably installed inside the arc-shaped placement groove, so that the front end of the snap-on spring piece 402 can be unidirectionally locked inside the snap-on slot 4032. When the support rotating rod 4 rotates in the reverse direction, the snap-on spring piece 402 and the snap-on slot 4032 do not have a locking effect. When the support rotating rod 4 rotates forward, the snap-on spring piece 402 and the snap-on slot 4032 are locked, and the drill bit 404 can rotate normally. This structure avoids damage caused by reverse rotation of the drill bit 404 due to misoperation.

[0046] Further, in the first embodiment, a functional ring 405 is provided on the outer movable sleeve of the lower end of the supporting rotating rod 4, and a plurality of groups of bristles are fixedly inserted on the inner end surface of the functional ring 405 to form a brush structure. The inside of the functional ring 405 and the inner side of the snap-in slot 4032 are both provided with permanent magnetic rings. The magnetic strength of the permanent magnetic ring inside the functional ring 405 is greater than the strength of the permanent magnetic ring inside the snap-in slot 4032, so that when the functional ring 405 is sleeved, the plurality of groups of snap-in spring sheets 402 are adsorbed outward to separate from the snap-in slot 4032. At this time, the sliding rotating rod 403 can drive the drill bit 404 to slide into the supporting rotating rod 4 under the push of the outside, and the plurality of groups of bristles form a brush structure to clean the drill bit 404 to remove residual iron filings; the two groups of permanent magnetic rings can be neodymium magnets and ferrite magnets respectively;

[0047] Furthermore, in the second embodiment, the outer movable sleeve of the lower end of the supporting rotating rod 4 is provided with a functional collar 405, and the inner end surface of the functional collar 405 is fixedly plugged with multiple groups of bristles to form a brush structure, and the outer end surface of the supporting rotating rod 4 is embedded with a weak magnet; because the multiple groups of snap-on spring pieces 402 are arc-shaped structures and arranged in a circle, when the rotation direction of the supporting rotating rod 4 is consistent with the arrangement direction of the multiple groups of snap-on spring pieces 402, the front ends of the multiple groups of snap-on spring pieces 402 will be affected by inertia to shrink inwards during rotation, and snap into the slots 4032 To form a clamping effect, when the supporting rotating rod 4 stops rotating, the multiple sets of clamping springs 402 rotate outward under the attraction of the weak magnet and disengage from the clamping slots 4032. At this time, the sliding rotating rod 403 can slide up and down along the supporting rotating rod 4, and the multiple sets of bristles on the inner end face of the functional collar 405 form a brush structure to clean the drill bit 404. In this embodiment, the functional collar 405 can be permanent, and as long as the supporting rotating rod 4 stops rotating, the drill bit 404 can be made to abut against the external object and retract by controlling the telescopic device 9 to achieve a cleaning effect.

[0048] Reference Figure 3 , 6 , 7, here is an example of an implementation method of the adjustment component:

[0049] The upper end surface of the supporting shell 2 is located at the outer periphery of a group of shell rotating holes 201 at the output end of the transmission component, and a shell rotating ring 202 is integrally formed. The upper end of the shell rotating ring 202 can be rotatably connected to the inside of the annular bracket 1. The adjustment component includes a transmission gear ring 5, and the transmission gear ring 5 is fixedly installed with the upper end of the shell rotating ring 202. The transmission gear ring 5 and the supporting shell 2 play a fixing role in the upward and downward sliding clamping of the annular bracket 1. The inner and outer sides of the transmission gear ring 5 are meshed with adjustment gear rings 501. The upper end surface of the annular bracket 1 is rotatably connected with a positioning wheel 502 for sleeve-mounting the support adjustment gear ring 501;

[0050] Based on the above, when a set of adjusting toothed rings 501 is rotated, the adjusting toothed rings 501 will engage with multiple sets of transmission toothed rings 5 ​​and rotate synchronously, so that multiple sets of supporting shells 2 can rotate along the annular bracket 1 through the shell rotating ring 202 to play an adjusting role; Figure 4 , 7 The periphery of the positioning wheel 502 clamps and lifts the two sets of adjusting toothed rings 501 up and down to fix the positions of the adjusting toothed rings 501;

[0051] Furthermore, a latch pin which is movably engaged with the positioning wheel 502 is elastically inserted inside the annular bracket 1 to fix the rotation angle of the positioning wheel 502 and play a locking role.

[0052] Reference Figure 2 , 4 , here is an example of how the drive component can be implemented:

[0053] The driving assembly includes a plurality of transmission gears 6, the lower end of each transmission gear 6 is fixedly connected to a set of rotating shafts 3 located at the input end through a rotating shaft and other structures, and the plurality of transmission gears 6 are rotatably mounted inside a fixed frame 7, and a plurality of gear sets 601 meshing with the transmission gears 6 are rotatably mounted inside the fixed frame 7, a driving motor 8 for driving the gear set 601 is fixedly mounted in the middle of the fixed frame 7, and at least one set of telescopic devices 9 is fixedly mounted on the upper end surface of the fixed frame 7;

[0054] Based on the above content, the fixed frame 7 can be fixedly connected to the annular bracket 1 by means of bolts or the like; when the driving motor 8 is started, the output shaft of the driving motor 8 drives the gear set 601 to rotate, the gear set 601 is synchronously meshed with the multiple sets of transmission gears 6, and the transmission gears 6 drive the rotating shaft 3 at the output end to rotate, thereby causing the drill bit 404 to rotate along its own central axis to perform a cutting effect; the telescopic device 9 is used to push the fixed frame 7, the annular bracket 1 and the various auxiliary components to move forward, so as to control the cutting height of the drill bit 404;

[0055] For further reference, Figure 2 , 4 The gear set 601 may include two sets of gear rings, which are respectively meshed with the inner and outer sides of the multiple sets of transmission gears 6 to improve stability. The inner set of gear rings also meshes with multiple sets of gears. The multiple sets of gears should be arranged in a planetary gear structure. The output shaft of the drive motor 8 should be fixedly connected to the gear located in the middle to improve the stability of the transmission and change the transmission ratio. The telescopic device 9 can be a controllable telescopic structure such as an electric telescopic rod. The shell of the telescopic device 9 serves as the supporting connection point between the device and the existing external machinery and equipment;

[0056] The annular bracket 1 has multiple groups of through holes formed on its circumference, and the housing swivel 202 is placed inside the through holes. Bearings can be installed between the through holes and the housing swivel 202 to improve the rotation and load-bearing effects.

[0057] A placement groove is provided in the middle of the outer end surface of the positioning wheel 502 for placing the adjusting gear ring 501 for fixing.

[0058] Based on the above-mentioned embodiments, when assembling:

[0059] Place multiple groups of supporting shells 2 inside the annular bracket 1 through the shell rotating ring 202, and fix the transmission gear ring 5 to the upper end of the shell rotating ring 202 by bolts or snaps, so that the supporting shell 2 and the transmission gear ring 5 can serve as an upper and lower clamping and fixing structure for the annular bracket 1. Place two groups of adjusting gear rings 501 on the inner and outer sides of the multiple groups of transmission gear rings 5 ​​respectively, and finally use multiple groups of positioning wheels 502 to fix and install the two groups of adjusting gear rings 501 in the annular bracket 1; fix the fixing frame 7 to the annular bracket 1 by bolts, and make the gear group 601 in the fixing frame 7 mesh with the multiple groups of transmission gears 6; finally, fix the outer shell of the telescopic device 9 to the existing machine equipment to replace its drill device.

[0060] Based on the above implementation examples, when used:

[0061] Start the driving motor 8, the output shaft of the driving motor 8 drives the gear set 601 to rotate the multiple transmission gears 6, the transmission gear 6 drives a set of rotating shafts 3 to rotate, the rotating shafts 3 drive another set of rotating shafts 3 to rotate through the transmission belt 303, the rotating shafts 3 drive the supporting rotating rod 4 to rotate, the supporting rotating rod 4 drives the sliding rotating rod 403 and the drill bit 404 to rotate through the clamping spring piece 402, and finally the drill bit 404 plays a cutting role; rotate the adjusting tooth ring 501, the adjusting tooth ring 501 drives the transmission tooth ring 5 and the housing rotating ring 202 to rotate the supporting housing 2, and the positions of the multiple sets of drill bits 404 can be adjusted at the same time;

[0062] Embodiment 1: When the functional collar 405 is not installed, when the support rotating rod 4 rotates in the opposite direction, the snap-on spring piece 402 cannot lock the sliding rotating rod 403, and the sliding rotating rod 403 will not be forced to rotate with the support rotating rod 4, thereby avoiding damage to the drill bit 404 due to misoperation; when the functional collar 405 is installed, the strong magnet in the functional collar 405 pulls the front ends of the multiple groups of snap-on spring pieces 402 out of the snap-on slots 4032, and the sliding rotating rod 403 can slide up and down along the support rotating rod 4, and the bristle structure on the functional collar 405 can clean the drill bit 404;

[0063] Embodiment 2: Multiple groups of snap-fit ​​spring pieces 402 are of arc-shaped structure and arranged in a circle. When the rotation direction of the supporting rotating rod 4 is consistent with the arrangement direction of the multiple groups of snap-fit ​​spring pieces 402, the front ends of the multiple groups of snap-fit ​​spring pieces 402 will shrink inwards due to inertia and form a snap-fit ​​effect with the snap-fitting grooves 4032. When the supporting rotating rod 4 stops rotating, the multiple groups of snap-fit ​​spring pieces 402 rotate outwards and disengage from the snap-fitting grooves 4032 under the attraction of the weak magnet. At this time, the sliding rotating rod 403 can slide up and down along the supporting rotating rod 4 and form a brush structure through the multiple groups of bristles on the inner end face of the functional collar 405 to clean the drill bit 404.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A CNC drilling machine for processing hardware accessories, comprising an annular bracket (1), wherein a plurality of groups of supporting shells (2) arranged in a circumference are rotatably mounted on the lower end of the annular bracket (1), Features: A transmission assembly for transmitting kinetic energy is installed inside each of the plurality of support shells (2), a drill bit (404) assembly is fixedly installed at the output end of the transmission assembly, an adjustment assembly that cooperates with the plurality of support shells (2) is rotatably installed at the upper end of the annular bracket (1), and a drive assembly for driving the transmission assembly is fixedly installed above the annular bracket (1); One end of the support shell (2) is rotatably connected to the annular bracket (1); the input end and the output end of the transmission component are respectively located on the left and right sides of the support shell (2); and the drive component is located above the adjustment component.

2. A CNC drilling machine for hardware accessories processing according to claim 1, Features: The support shell (2) is a teardrop-shaped structure, the diameter of one side of the support shell (2) is larger than the diameter of the other side, and the end of the support shell (2) with a smaller diameter is the output end of the transmission component.

3. A CNC drilling machine for hardware accessories processing according to claim 1, Features: The transmission assembly comprises two groups of rotating shafts (3), the left and right ends of the outer end surface of the supporting shell (2) are both penetrated inwardly with shell rotating holes (201), the two groups of rotating shafts (3) are respectively rotatably mounted inside the two groups of shell rotating holes (201), the two groups of rotating shafts (3) are both integrally formed with spline rods (301) at one end facing the inside of the supporting shell (2), the outer peripheries of the two groups of spline rods (301) are both movably sleeved with transmission wheels (302), and the two groups of transmission wheels (302) are transmission-connected by a transmission belt (303).

4. A CNC drilling machine for processing hardware accessories according to claim 3, Features: The drill bit (404) assembly comprises a supporting rotating rod (4) welded to a group of the transmission wheels (302) located at the output end, the lower end of the supporting rotating rod (4) is open, a sliding rotating rod (403) extending downward is slidably installed inside the supporting rotating rod (4), a drill bit (404) is movably inserted into the lower end of the sliding rotating rod (403), an elastic member (406) is elastically connected between the sliding rotating rod (403) and the support rotating rod (4), and a locking device is movably clamped between the sliding rotating rod (403) and the support rotating rod (4).

5. A CNC drilling machine for processing hardware accessories according to claim 4, Features: The locking device comprises a plurality of groups of snap-fit ​​spring sheets (402); a first rotating rod convex ring (401) is integrally formed at the opening of the lower end of the supporting rotating rod (4); a second rotating rod convex ring (4031) is integrally formed at the upper end of the sliding rotating rod (403); the first rotating rod convex ring (401) and the second rotating rod convex ring (4031) are movably abutted against each other up and down; a plurality of groups of arc-shaped placement grooves are provided on the circumference of the inner end surface of the first rotating rod convex ring (401); snap-fit ​​spring sheets (402) are rotatably installed inside the plurality of groups of arc-shaped placement grooves through structures such as rotating shafts; a plurality of groups of snap-fit ​​opening grooves (4032) cooperating with the snap-fit ​​spring sheets (402) are provided on the outer circumference of the sliding rotating rod (403).

6. A CNC drilling machine for processing hardware accessories according to claim 5, Features: The main body of the snap-fit ​​spring piece (402) is an arc-shaped structure, the front end of the snap-fit ​​spring piece (402) is a ratchet structure, and one end of the snap-fit ​​spring piece (402) is rotatably mounted inside the arc-shaped placement groove.

7. A CNC drilling machine for processing hardware accessories according to claim 6, Features: The outer movable sleeve of the lower end of the supporting rotating rod (4) is provided with a functional sleeve (405), and the inner end surface of the functional sleeve (405) is fixedly plugged with multiple groups of bristles. The inside of the functional sleeve (405) and the inner side of the snap-in slot (4032) are both sleeved with permanent magnetic rings, and the magnetic strength of the permanent magnetic ring inside the functional sleeve (405) is greater than the strength of the permanent magnetic ring inside the snap-in slot (4032).

8. A CNC drilling machine for processing hardware accessories according to claim 6, Features: The peripheral movable sleeve at the lower end of the supporting rotating rod (4) is provided with a functional collar (405), the inner end surface of the functional collar (405) is fixedly plugged with a plurality of groups of bristles, and the peripheral end surface of the supporting rotating rod (4) is embedded with a weak magnet.

9. A CNC drilling machine for processing hardware accessories according to claim 1, Features: The upper end surface of the support shell (2) is located at the output end of the transmission component, and a shell rotating ring (202) is integrally formed on the periphery of a group of shell rotating holes (201). The upper end of the shell rotating ring (202) can be rotatably connected to the inside of the annular bracket (1). The adjustment component comprises a transmission gear ring (5). The transmission gear ring (5) is fixedly installed on the upper end of the shell rotating ring (202). The transmission gear ring (5) and the support shell (2) play a fixing role in the upward and downward sliding clamping of the annular bracket (1). The inner and outer sides of the transmission gear ring (5) are meshed with adjustment gear rings (501). The upper end surface of the annular bracket (1) is rotatably connected to a positioning wheel (502) for sleeve-mounting the support adjustment gear ring (501).

10. A CNC drilling machine for hardware accessories processing according to claim 1, Features: The driving assembly comprises a plurality of transmission gears (6), the lower ends of the transmission gears (6) being fixedly connected to a group of rotating shafts (3) located at the input end, the plurality of transmission gears (6) being rotatably mounted inside a fixed frame (7), the fixed frame (7) having a plurality of gear groups (601) rotatably mounted inside the fixed frame (7) and meshing with the transmission gears (6), a driving motor (8) for driving the gear groups (601) being fixedly mounted in the middle of the fixed frame (7), and at least one group of telescopic devices (9) being fixedly mounted on the upper end surface of the fixed frame (7).

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