An automatic drilling device for fasteners

Abstract

This invention provides an automatic drilling device for fasteners, comprising a frame, a drill bit assembly, a slot assembly, and a conveying assembly. The drill bit assembly is mounted on the upper end of the frame, and the drill bit is used to drill holes in fasteners. The slot assembly is located at the lower part of the frame and includes a bracket and multiple slots for fixing and clamping fasteners. The size of the multiple slots increases sequentially, and the slots are set on the bracket and can be adjusted along the bracket. The conveying assembly includes a conveyor belt, a feed guide rail, and a moving push rod. The conveyor belt conveys fasteners to the feed guide rail, which is axially aligned with the slots. The moving push rod is used to push the fasteners on the feed guide rail into the slots. Compared with the prior art, this solution, through the setting of different sized slots and the setting of a fastener drilling production line, enables the device to adapt to the drilling of fasteners of various specifications, saving the manufacturing cost of fastener drilling equipment and improving the efficiency of fastener drilling.

Description

Technical Field

[0001] This invention relates to the field of fastener manufacturing technology, and in particular to an automatic drilling device for fasteners. Background Technology

[0002] Fasteners have long been known as the "rice of industry" and are one of the most widely used basic mechanical components for fastening connections. They are widely used in various machines, equipment, bridges, ships, railways, airplanes, instruments, etc. With the rapid development of science and technology, the requirements for fasteners are also increasing, especially in some key components where holes need to be drilled for fasteners, mainly for preventing loosening, preventing rotation, positioning, and reinforcing and locking.

[0003] However, given the wide variety of fastener types and specifications, and the lack of standardized requirements for drilling location and size, it is difficult to establish an assembly line for drilling. Different specifications of fasteners require specific equipment for drilling, resulting in high drilling costs. Furthermore, due to the specific requirements for drilling tools, current fastener drilling equipment cannot efficiently complete the drilling process, and there is no efficient drilling equipment to meet the requirements. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide an automatic drilling device for fasteners, which solves the problems of low drilling efficiency and high cost of fasteners in the prior art.

[0005] To achieve the above and other related objectives, the present invention provides an automatic drilling device for fasteners, comprising:

[0006] frame;

[0007] A drill bit assembly, which is mounted on the upper end of a frame and is slidable horizontally along the frame, the drill bit assembly including a drill bit housing and a detachable drill bit mounted on the drill bit housing, the drill bit being used to drill holes in fasteners;

[0008] A slot assembly is located at the lower part of the frame. The slot assembly includes a bracket and a plurality of slots for fixing and clamping fasteners. The size of the plurality of slots increases sequentially. The slots are disposed on the bracket and can be adjusted along the bracket. The bracket is disposed on the frame.

[0009] A conveying assembly is located in the middle of the frame and below the drill bit assembly. The conveying assembly includes a conveyor belt, a feed guide rail, and a movable push rod. The conveyor belt conveys fasteners to the feed guide rail, which is axially aligned with the slot. The movable push rod is used to push the fasteners on the feed guide rail into the slot.

[0010] The working principle of this basic scheme is as follows: Before using this device, according to the size of the fastener, adjust the corresponding size slot along the bracket to the top facing the drill bit, and lock the slot position. Then, according to the required drilling size of the fastener, select a suitable drill bit, install it on the drill bit box, and adjust the drill bit position according to the drilling position of the fastener. When using this mold, the fastener can be placed on the conveyor belt and transferred to the feed guide rail. Use the moving push rod to push the fastener into the designated slot, and the slot clamps the fastener; then start the drill bit to move down and drill the fastener.

[0011] The beneficial effects of this basic scheme are as follows:

[0012] 1. This solution uses slots with progressively increasing sizes, which can be adjusted along the bracket. It can match the appropriate slot to the size of the fastener to clamp it during the drilling process. It is suitable for drilling fasteners of different sizes and specifications, thus reducing processing costs.

[0013] 2. In this solution, a conveying assembly is used to transport and feed the fasteners, which are automatically fed into the slots and clamped, enabling the drilling of the fasteners to be carried out in an assembly line process, thereby greatly improving the drilling efficiency of the fasteners.

[0014] 3. In this solution, the cooperation between the conveying component and the slot component enables the fastener drilling process to be carried out quickly and easily, thereby increasing the degree of automation in the fastener drilling process and further improving the processing efficiency of fasteners.

[0015] Compared with existing technologies, this solution, through the setting of different sized slots and the setting of fastener drilling production line, enables the device to adapt to the drilling of fasteners of various specifications, saves the manufacturing cost of fastener drilling equipment, and also improves the efficiency of fastener drilling.

[0016] Furthermore, the frame includes a base, a telescopic column, and a horizontal plate connected sequentially from bottom to top. The drill bit assembly is disposed on the horizontal plate, and a first motor is provided on the telescopic column. The first motor is used to control the telescopic height of the telescopic column.

[0017] Beneficial effects: By adjusting the height of the telescopic column using the first motor, the drill bit can move up and down, thus facilitating control of the drill bit to drill holes in fasteners.

[0018] Furthermore, a guide rail cover is slidably connected to the upper end of the drill bit housing. The guide rail cover is fixed below the horizontal plate. By sliding the drill bit housing along the guide rail cover, the position of the drill bit on the horizontal plane can be adjusted.

[0019] Beneficial effects: The sliding arrangement of the drill bit housing along the guide rail cover facilitates the adjustment of the position of the drill bit and the fastener, enabling faster and more precise drilling of the fastener.

[0020] Furthermore, the top cover of the guide rail is provided with a translation guide rail, the drill bit box is provided with a slider that is slidably connected to the translation guide rail, the top cover of the guide rail is fixed with a horizontal block, the drill bit box is provided with a translation screw that is threadedly connected to the horizontal block, one end of the translation screw is connected to the output shaft of the second motor, and the second motor is used to adjust the position of the drill bit on the horizontal plane.

[0021] Beneficial effects: The drill bit housing is adjusted on the top cover of the guide rail by sliding the slider along the translation guide rail, and the sliding is achieved by driving the translation screw to rotate through the second motor, thus making the adjustment of the drill bit position simple, fast and precise.

[0022] Furthermore, the lower end of the drill bit housing is provided with a drill bit connecting shaft and an ultrasonic detector. The drill bit connecting shaft is used to detachably connect the drill bit, and the ultrasonic detector is used to detect fasteners after drilling.

[0023] Beneficial effects: The ultrasonic detector can move with the drill bit housing and detect cracks on fasteners through ultrasonic waves, especially small cracks that are invisible to the naked eye. After the cracks are detected, they can be used to determine whether the drilling of the fasteners is qualified, and then unqualified fasteners can be classified and processed in a timely manner.

[0024] Furthermore, the drill bit is equipped with conveying holes for supplying cold air around its perimeter.

[0025] Beneficial effects: During the drilling process, cold air can be supplied through the feed hole. The cold air can cool the fasteners during the drilling process to prevent thermal cracking, and can also remove the drill chips generated during the drilling process, so as to avoid the drill chips affecting the drilling process.

[0026] Furthermore, a turntable is rotatably connected to the bracket, and multiple slots are arranged along the circumference of the turntable, with at least eight slots. The bracket is provided with a limiting member to restrict the rotation of the turntable.

[0027] Beneficial effects: Different sized card slots can be adjusted by rotating the turntable along the bracket, and the position of the card slots can be locked by the limiting component, making it convenient to use the card slots.

[0028] Furthermore, the bracket is connected to the base via a front tilting slide and a rear tilting slide. The base is provided with a front tilting handle for adjusting the front tilting slide and a rear tilting handle for adjusting the rear tilting slide. The sliding direction of the front tilting slide and the rear tilting slide is parallel to the sliding direction of the drill bit assembly.

[0029] Beneficial effects: Normally, the support and chuck are horizontal, and the drilled holes for fasteners are vertical. If drilling at an angle is required, the tilting support needs to be adjusted according to whether it's a forward or backward angled hole. For a forward angled hole, the forward tilting handle needs to be rotated to move the forward tilting slide forward along the base, thus creating an angle between the chuck and the drill bit. For a backward angled hole, the rear tilting handle needs to be rotated to move the rear tilting slide backward along the base, thus creating an angle between the chuck and the drill bit.

[0030] Furthermore, the conveying assembly includes a support plate, and the feeding guide rail is rotatably connected to the support plate via a rotary motor. The rotary motor is electrically connected to the ultrasonic tester. When the ultrasonic tester detects that the fastener is qualified, it transmits a signal to the rotary motor to make it rotate forward; when the ultrasonic tester detects that the fastener is unqualified, it transmits a signal to the rotary motor to make it rotate in reverse.

[0031] Beneficial effects: After detecting cracks in fasteners, the acoustic detector can send a signal to the conveying component, causing the motor to rotate forward or reverse, which in turn drives the feeding track to rotate forward or reverse for unloading, thereby automatically classifying qualified and unqualified fasteners.

[0032] Furthermore, the turntable is provided with a material ejection component, which is slidably connected to the turntable along the axial direction of the slot. The material ejection component is provided with a material ejection rod that extends into the slot, and the material ejection rod is arranged opposite to the movable push rod.

[0033] Beneficial effects: The unloading process of fasteners is completed by pushing the unloading rod on the unloading component back into the feed guide rail, which can quickly complete the unloading process of fasteners and further improve the drilling efficiency of fasteners. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of an automatic drilling device for fasteners, as an example of the present invention.

[0035] Figure 2 This is a schematic diagram of an automatic drilling device for fasteners, as an example of the present invention.

[0036] Figure 3 This is a schematic diagram of a drill bit assembly used in an automatic drilling device for fasteners, as an example of the present invention.

[0037] Figure 4 This is a schematic diagram of the structure of the drill bit in an automatic drilling device for fasteners, as an example of the present invention.

[0038] Figure 5 This is a front view of a turntable used in an automatic drilling device for fasteners, as an example of the present invention.

[0039] Figure 6 This is a cross-sectional view of the turntable slot in Embodiment 2 of the present invention;

[0040] Figure 7 This is a cross-sectional view of the turntable slot in Embodiment 3 of the present invention;

[0041] Figure 8 This is a schematic diagram of the sliding cavity and the hollow cavity in Embodiment 3 of the present invention.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1-First motor, 2-Frame, 3-Lifting screw, 4-Drill bit housing, 5-Ultrasonic detector, 6-Conveying assembly, 7-Moving push rod, 8-Rotation limiter, 9-Slot, 10-Bracket, 11-Rear tilting slide column, 12-Rear tilting handle, 13-Forward tilting handle, 14-Horizontal groove, 15-Forward tilting slide column, 16-Turntable, 17-Feeding guide rail, 18-Drill bit, 19-Drill bit connecting shaft, 20-Guide rail top cover, 21-Transfer screw, 22-Second motor, 23-Slider, 24-Conveying hole, 25-Unloading component, 26-Cylinder, 27-Unloading rod, 28-Connecting rod, 29-Slide rod, 30-Cavity, 31-Clamping block, 32-Slide cavity, 33-Slide rod, 34-Electromagnet, 35-Magnetic block. Detailed Implementation

[0044] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0045] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show components relevant to the present invention and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the present invention, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0046] Before describing the embodiments of the present invention in detail, the application environment of the present invention will be described first. The technology of the present invention is mainly applied to fastener drilling, especially to drilling fasteners of different sizes and specifications.

[0047] Example 1

[0048] The specific structure of an automatic drilling device for fasteners in this invention is described in conjunction with [reference needed]. Figures 1 to 5 The device includes:

[0049] 2-Rack;

[0050] An 18-drill bit assembly is mounted on the upper end of a 2-frame and is slidable horizontally along the 2-frame. The 18-drill bit assembly includes a 4-drill bit housing and 18-drill bits detachably mounted on the 4-drill bit housing. The 18-drill bits are used for drilling holes in fasteners.

[0051] A 9-slot assembly is located at the lower part of the 2-frame. The 9-slot assembly includes a 10-bracket and a plurality of 9-slots for fixing and clamping fasteners. The size of the plurality of 9-slots increases sequentially. The 9-slots are disposed on the 10-bracket and can be adjusted along the 10-bracket. The 10-bracket is disposed on the 2-frame.

[0052] 6-Conveying assembly, located in the middle of 2-frame and below 18-drill bit assembly, 6-conveying assembly includes conveyor belt, 17-feed guide rail and 7-moving push rod, the conveyor belt conveys fasteners to 17-feed guide rail, 17-feed guide rail is axially aligned with 9-slot, and 7-moving push rod is used to push the fasteners on 17-feed guide rail into 9-slot.

[0053] Among them, the 9-slot is locked to the 10-bracket by a fastening or locking component, and the 9-slot assembly is equipped with a clamping component that can automatically lock the fastener. The 17-feed guide rail is equipped with a sensor. After sensing that there is a fastener in the 17-feed guide rail, the 7-moving push rod can be activated to push the fastener into the 9-slot. The 7-moving push rod can be automatically controlled by a reciprocating motion mechanism such as a cylinder or hydraulic cylinder.

[0054] Before use, the device in this solution adjusts the 9-slot, which is the appropriate size, along the 10-bracket to its highest position facing the 18-drill bit, according to the size of the fastener. The 9-slot position is then locked, and its axial direction must be aligned with the 17-feed guide rail. Next, based on the required hole size for the fastener, a suitable 18-drill bit is selected and installed on the 4-drill bit housing. The 18-drill bit position is adjusted according to the drilling location of the fastener. Drilling then begins. In this solution, the fastener is placed on a conveyor belt and conveyed to the 17-feed guide rail. The 7-moving push rod pushes the fastener into the designated 9-slot, which clamps the fastener. Then, the 18-drill bit is moved downwards to drill the fastener. After the fastener drilling is completed, the fastener can be removed from the 9-slot or returned to the 17-feed guide rail for conveying, which makes the fastener drilling process more automated and improves the efficiency of fastener drilling.

[0055] In some implementations, the 2-frame includes a base, a telescopic column, and a horizontal plate connected sequentially from bottom to top. The 18-drill bit assembly is disposed on the horizontal plate. The telescopic column is equipped with a 1-first motor, which controls the telescopic height of the telescopic column. For example, Figure 1 , Figure 2 As shown, the base and the horizontal plate are located on the same side of the telescopic column. The arrangement of the base and the horizontal plate facilitates the corresponding arrangement of the 18-drill bit assembly and the 9-slot assembly. The telescopic column can adjust the position of the 18-drill bit assembly in the vertical direction by telescopically extending and retracting. The 1-first motor is connected to the 3-lifting screw. By rotating the 1-first motor, the 3-lifting screw can be rotated to adjust the height of the telescopic column, which can accurately adjust the drilling position of the 18-drill bit assembly.

[0056] In some implementations, a 20-guide rail top cover is slidably connected to the upper end of the 4-drill bit housing. The 20-guide rail top cover is fixed below the horizontal plate. Sliding the 4-drill bit housing along the 20-guide rail top cover allows adjustment of the position of the 18-drill bit on the horizontal plane. For example, Figures 1 to 3 As shown, the 20-guide rail top cover facilitates the secure connection of the 18-drill bit assembly to the horizontal plate and also facilitates the smooth sliding of the 4-drill bit housing along the horizontal plate. In this scheme, the sliding direction of the 4-drill bit housing is perpendicular to the telescopic column.

[0057] In some implementations, the 20-guide rail top cover is equipped with a translational guide rail, the 4-drill bit housing is equipped with a 23-slider that is slidably connected to the translational guide rail, the 20-guide rail top cover is fixed with a cross block, the 4-drill bit housing is equipped with a 21-translation screw that is threadedly connected to the cross block, one end of the 21-translation screw is connected to the output shaft of the 22-second motor, and the 22-second motor is used to adjust the position of the 18-drill bit on the horizontal plane. For example, Figures 1 to 3 As shown, the 4-drill bit housing is adjusted on the 20-guide rail top cover by sliding the 23-slider along the translation guide rail, and the 21-translation screw is rotated by the 22-second motor to achieve sliding, thus making the adjustment of the 18-drill bit position simple, fast and precise.

[0058] In some implementations, the lower end of the 4-drill bit housing is equipped with a 19-drill bit connecting shaft and a 5-ultrasonic detector. The 19-drill bit connecting shaft is used for detachable connection of the 18-drill bit, and the ultrasonic detector is used to inspect fasteners after drilling. For example, Figure 1 , Figure 2 As shown, the 5-ultrasonic detector is installed on the 4-drill bit housing. It can move with the 4-drill bit housing to easily detect cracks on fasteners, especially small cracks that cannot be seen with the naked eye. After the cracks are detected, they can be used to determine whether the drilling of the fasteners is qualified, and then unqualified fasteners can be classified and processed in a timely manner.

[0059] In some implementations, the 18-drill bit is surrounded by 24-feeding holes for supplying cold air. For example, Figure 4 As shown, cold air can be supplied from the 24-feeding hole during the drilling process. The cold air can cool the fasteners during the drilling process to prevent thermal cracks, and can also remove the drill chips generated during the drilling process to avoid the drill chips affecting the drilling process.

[0060] In some implementations, a 16-turntable is rotatably connected to the 10-bracket, and multiple 9-slots are arranged circumferentially along the 16-turntable, with at least eight 9-slots. The 10-bracket is provided with limiting members to restrict the rotation of the 16-turntable. For example, Figure 5As shown, the 16-turntable is rotatably connected to the 10-bracket via the 8-rotation limiter. The 16-turntable can rotate along the 8-rotation limiter and lock in a designated position, specifically using a rotation locking device from existing technology. In use, rotating the 16-turntable along the 10-bracket adjusts the 9-slots of different sizes to the drilling position. The limiter locks the 9-slots in place, facilitating their use. The eight 9-slots with progressively increasing sizes in this design can accommodate most fastener sizes on the market, broadening the applicability of the device. For fasteners, if the 9-slot size is slightly larger than the fastener's outer diameter, it can be inserted into the 9-slot and clamped for drilling.

[0061] In some implementations, the 10-bracket is connected to the base via a 15-forward tilting slide and an 11-rear tilting slide. The base is equipped with a 13-forward tilting handle for adjusting the 15-forward tilting slide and a 12-rear tilting handle for adjusting the 11-rear tilting slide. The sliding directions of the 15-forward tilting slide and the 11-rear tilting slide are parallel to the sliding direction of the 18-drill bit assembly. For example, Figure 1 , Figure 2 As shown, a horizontal groove (14-) is provided on the base. The horizontal groove is parallel to and translates along the guide rail, and is also perpendicular to the telescopic column. The lower ends of the forward tilting slide column (15-) and the backward tilting slide column (11-) are slidably connected in the horizontal groove (14-). The upper ends of the forward tilting slide column (15-) and the backward tilting slide column (11-) are hinged to the lower end of the bracket (10-). Normally, the bracket (10-) and the slot (9-) are horizontal. The drilled hole for the fastener is vertical. If a slanted hole is required, the tilting bracket (10-) is adjusted according to whether it is a forward or backward slanted hole. For a forward slanted hole, the forward tilting handle (13-) needs to be rotated to move the forward tilting slide column (15-) forward along the horizontal groove (14-) on the base, thus creating a moving angle between the slot (9-) and the drill bit (18-). This angle ranges from 0-60°. For a backward inclined hole, the 12-backward tilting handle needs to be rotated to move the 11-backward tilting slide column backward along the 14-horizontal groove of the base, thereby creating a moving angle between the 9-slot and the 18-drill bit, with the angle ranging from 0-60°. In this design, the side of the 14-horizontal groove closer to the telescopic column is the rear, and the side farther from the telescopic column is the front.

[0062] In some implementations, the 6-conveying assembly includes a support plate, and the 17-feed guide rail is rotatably connected to the support plate via a rotating motor. The rotating motor is electrically connected to the ultrasonic tester. When the ultrasonic tester detects that the fastener is qualified, it transmits a signal to the rotating motor to make it rotate forward; when the ultrasonic tester detects that the fastener is unqualified, it transmits a signal to the rotating motor to make it rotate backward.

[0063] In practice, the fasteners are retracted into the 17-feed guide rail. An acoustic detector detects cracks in the fasteners and sends the result directly to the computer. This sends a signal to the rotary motor, causing it to rotate forward or backward, which in turn rotates the feed rail for unloading. This automatically sorts the fasteners as qualified or unqualified. If no cracks are found, a reverse signal is sent to the rotary motor, causing the 17-feed guide rail to rotate to the right, thus delivering the fastener to the designated position for unqualified products. If no cracks are found, a forward signal is sent to the rotary motor, causing the 17-feed guide rail to rotate to the left, thus delivering the fastener to the designated position for qualified products. This prevents defective parts from entering the next stage, thus avoiding resource waste.

[0064] Example 2

[0065] The difference between this embodiment and Implementation 1 is that, in this embodiment, as Figure 6 As shown, the 16-turntable is provided with a 25-ejector component, the 25-ejector component is slidably connected to the 16-turntable along the axial direction of the 9-slot, the 25-ejector component is provided with a 27-ejector rod extending into the 9-slot, and the 27-ejector rod is arranged opposite to the 7-moving push rod.

[0066] In actual implementation, the sliding of the 27-ejection rod on the 25-ejection component is achieved by the reciprocating sliding of the 26-cylinder, hydraulic cylinder, etc. During this process, the fastener that has been processed can be pushed back to the 17-feed guide rail by the 27-ejection rod, and the fastener can be transferred again by the 6-conveying component, so as to realize the automation of the fastener drilling process.

[0067] Example 3

[0068] The difference between this embodiment and Implementation 1 is that, in this embodiment, as Figure 7 and Figure 8As shown, the clamping component is used to lock the fastener in the 9-slot. The clamping component includes two 31-clamping blocks arranged opposite to the center of the 9-slot. A 30-cavity is provided inside the 16-turntable and on the inner wall of the 9-slot. The 31-clamping blocks are slidably connected in the 30-cavity. A 32-sliding cavity is provided on the 16-turntable, and the 32-sliding cavity communicates with the 30-cavity. Both the 30-cavity and the 32-sliding cavity contain hydraulic oil. A 29-sliding rod is slidably connected in the 32-sliding cavity. The 25-unloading component includes a 28-connecting rod, which passes through and is slidably connected to the 16-turntable. The 28-connecting rod is fixedly connected to the 29-slide rod. To facilitate the control of hydraulic oil transfer, the 16-turntable is equipped with a 34-electromagnet that can be switched on and off, and the 29-slide rod is equipped with a 35-magnet. Controlling the energization of the 34-electromagnet can change its magnetic field, causing the 34-electromagnet and the 35-magnet to attract or repel each other.

[0069] In actual implementation, as the fastener enters the 9-slot, the 34-electromagnet is energized and attracts the 35-magnet, causing the 29-slide rod to extend into the 32-slide cavity. The hydraulic oil in the 32-slide cavity is transferred to the 30-cavity, and the hydraulic oil pushes the 31-clamping block out of the 30-cavity. The two 31-clamping blocks move relative to the center of the 9-slot to clamp the fastener. During this process, driven by the 29-slide rod, the 27-ejector rod will move out of the 9-slot without affecting the fastener's entry into the 9-slot for clamping. After the fastener is drilled, the current can be changed to make the electromagnet 34 and the magnetic block 35 repel each other, thereby causing the slide rod 29 to extend out of the cavity 32. The hydraulic oil in the cavity 30 is transferred to the cavity 32 and then quickly returned to the cavity 30. The two clamping blocks 31 move away from the center of the slot 9 and release their grip on the fastener. At the same time, driven by the slide rod 29, the connecting rod 28 moves along the turntable 16, causing the ejector rod 27 to move and extend into the slot 9. The fasteners that are not clamped in the slot 9 are returned to the feed guide rail 17. The fasteners are then transferred again by the conveying assembly 6, thus automating the drilling process of the fastener.

[0070] In this embodiment, the structure automatically clamps the fastener in the 9-slot by transferring hydraulic oil. While releasing the clamp on the fastener, it can also push the fastener back into the 6-conveying assembly so that it can enter the next process.

[0071] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An automatic drilling device for fasteners, characterized in that, include: frame; A drill bit assembly, which is mounted on the upper end of a frame and is slidable horizontally along the frame, the drill bit assembly including a drill bit housing and a detachable drill bit mounted on the drill bit housing, the drill bit being used to drill holes in fasteners; A slot assembly is located at the lower part of the frame. The slot assembly includes a bracket and a plurality of slots for fixing and clamping fasteners. The size of the plurality of slots increases sequentially. The slots are disposed on the bracket and can be adjusted along the bracket. The bracket is disposed on the frame. A conveying assembly is located in the middle of the frame and below the drill bit assembly. The conveying assembly includes a conveyor belt, a feed guide rail, and a movable push rod. The conveyor belt conveys fasteners to the feed guide rail, which is axially aligned with the slot. The movable push rod is used to push the fasteners on the feed guide rail into the slot. The conveying assembly includes a support plate, and the feeding guide rail is rotatably connected to the support plate via a rotary motor. The rotary motor is electrically connected to an ultrasonic tester. When the ultrasonic tester detects that the fastener is qualified, it transmits a signal to the rotary motor to make it rotate forward; when the ultrasonic tester detects that the fastener is unqualified, it transmits a signal to the rotary motor to make it rotate in reverse. The frame includes a base, a telescopic column, and a cross plate connected sequentially from bottom to top. The bracket is connected to the base via a front tilting slide and a rear tilting slide. The base is provided with a front tilting handle for adjusting the front tilting slide and a rear tilting handle for adjusting the rear tilting slide. The sliding direction of the front tilting slide and the rear tilting slide is parallel to the sliding direction of the drill bit assembly.

2. The automatic drilling device for fasteners according to claim 1, characterized in that: The drill bit assembly is mounted on the horizontal plate, and a first motor is mounted on the telescopic column. The first motor is used to control the telescopic height of the telescopic column.

3. The automatic drilling device for fasteners according to claim 2, characterized in that: The upper end of the drill bit housing is slidably connected to a guide rail cover, which is fixed below the horizontal plate. By sliding the drill bit housing along the guide rail cover, the position of the drill bit on the horizontal plane can be adjusted.

4. The automatic drilling device for fasteners according to claim 3, characterized in that: The top cover of the guide rail is provided with a translation guide rail, the drill bit box is provided with a slider that is slidably connected to the translation guide rail, a horizontal block is fixed on the top cover of the guide rail, and a translation screw is provided on the drill bit box that is threadedly connected to the horizontal block. One end of the translation screw is connected to the output shaft of a second motor, and the second motor is used to adjust the position of the drill bit on the horizontal plane.

5. The automatic drilling device for fasteners according to claim 1, characterized in that: The lower end of the drill bit housing is provided with a drill bit connecting shaft and an ultrasonic detector. The drill bit connecting shaft is used to detachably connect the drill bit, and the ultrasonic detector is used to detect fasteners after drilling.

6. An automatic drilling device for fasteners according to any one of claims 1-5, characterized in that: The drill bit is equipped with air delivery holes around its perimeter.

7. The automatic drilling device for fasteners according to claim 2, characterized in that: A turntable is rotatably connected to the bracket, and multiple slots are arranged along the circumference of the turntable. There are at least eight slots, and the bracket is provided with a limiting member to restrict the rotation of the turntable.

8. The automatic drilling device for fasteners according to claim 7, characterized in that: The turntable is provided with a material ejection component, which is slidably connected to the turntable along the axial direction of the slot. The material ejection component is provided with a material ejection rod that extends into the slot, and the material ejection rod is arranged opposite to the movable push rod.

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