Rotary automatic tapping machine

Abstract

The invention relates to the technical field of fastener machining, in particular to a rotary automatic tapping machine which comprises a rack, a tapping mechanism, a tapping mechanism and a tapping mechanism. The rotating assembly is used for driving the rotating disc to rotate; the clamping assembly comprises a clamping seat and a locking mechanism, and the locking mechanism is used for driving the clamping seat to clamp and fix the part; the tapping assembly comprises a feeding mechanism and a tapping tool, and the feeding mechanism is used for driving the tapping tool to tap the part; the adjusting assembly comprises a vibration triggering mechanism, a clamping enhancing mechanism and a feeding limiting mechanism; according to the application, the change of the vibration state of the part can be found in time, so that the fixing stability of the part can be judged, the falling or damage of the part caused by the looseness or excessive vibration of the locking block can be prevented, and meanwhile, the accuracy and stability of the part in the machining process can be ensured, so that the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fastener processing, in particular to a rotary automatic tapping machine. Background Art

[0002] A tapping machine is a machine tool that uses a tap to process internal threads. It is the most widely used internal thread processing machine tool and is often used when processing internal threads on fasteners.

[0003] At present, the tapping machinery used is the traditional tapping machine. The traditional tapping machine can only tap a single hole at a time. When a workpiece has multiple holes that need to be tapped, different holes can only be tapped in turn. When tapping different holes, the hole to be tapped needs to be located directly below the tap. Therefore, the position of the workpiece needs to be constantly changed to adapt to the needs of tapping different holes. The traditional tapping machine has the disadvantages of low production efficiency, high labor intensity, inaccurate tapping holes, and high costs.

[0004] In order to solve the above problems, rotary multi-station tapping machines came into being. This type of tapping machine is provided with multiple tapping stations, which can tap different hole positions of the parts while rotating the parts. However, the existing rotary multi-station tapping machines still have the following obvious defects when used: vibration will be generated when drilling holes, and the vibration will inevitably cause the parts to shift. The rotary multi-station tapping machine will drill holes at different hole positions of the parts. After causing the parts to shift in the previous process, it will affect the drilling position and drilling accuracy of the subsequent process, affecting the production quality and output efficiency. Summary of the invention

[0005] The object of the present invention is to provide a rotary automatic tapping machine to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A rotary automatic tapping machine, comprising:

[0008] A frame, wherein the frame is provided with a rotating disk, the rotating disk is provided with a plurality of part slots, and the part slots are used to install parts that need to be tapped;

[0009] A rotating assembly, the rotating assembly being arranged on the rotating disk and used for driving the rotating disk to rotate;

[0010] A clamping assembly, the clamping assembly is arranged on the rotating disk, the clamping assembly comprises a clamping seat and a locking mechanism, the locking mechanism is used to drive the clamping seat to clamp and fix the parts;

[0011] A tapping assembly, the tapping assembly comprising a feeding mechanism and a tapping tool, the feeding mechanism being used to drive the tapping tool to tap the part;

[0012] An adjustment component, the adjustment component includes a vibration trigger mechanism, a clamping enhancement mechanism and a feed limit mechanism, the vibration trigger mechanism is used to start the vibration balancing mechanism and the feed limit mechanism when the part shakes, the clamping enhancement mechanism is used to enhance the clamping force of the locking mechanism on the part, and the feed limit mechanism is used to limit the moving direction of the feed mechanism.

[0013] Preferably, the tapping tool and the part slot are arranged correspondingly, and the rotating assembly is used to drive the rotating disk to rotate so as to rotate the parts in the part slot to under different tapping tools for tapping.

[0014] Preferably, the rotating assembly includes a rotating motor, which is disposed on the frame and is used to drive the rotating disk to rotate.

[0015] Preferably, the clamping seat and the locking mechanism are both arranged corresponding to the part slot, and the locking mechanism includes a locking block and a locking knob, the clamping seat is arranged in the part slot, the locking knob is connected to the clamping seat, the locking knob is connected to the locking block, and the locking block is slidably connected to the part slot, and the locking knob is used to drive the locking block to move along the part slot.

[0016] Preferably, the feeding mechanism comprises a mounting frame, a feeding push rod and a driving motor, the mounting frame is mounted on the frame, the feeding push rod is provided on the mounting frame, the driving motor is connected to the telescopic end of the feeding push rod, and the driving motor is connected to the tapping tool.

[0017] Preferably, the locking block is provided with a mounting groove, and the vibration trigger mechanism comprises a trigger push rod, a trigger plate, a trigger rod, a reset spring and a photoelectric switch, the trigger push rod is arranged on the side wall of the part groove, the trigger push rod is used to drive the trigger plate to move so as to limit the locking block, the trigger rod is symmetrically arranged on both sides of the mounting groove, the photoelectric switch is arranged inside the mounting groove, and the trigger plate is provided with a plurality of protrusions, when the trigger rod and the protrusions contact each other, the protrusions will resist the trigger rod and make it move along the mounting groove and trigger the photoelectric switch to open the clamping balancing mechanism and the feed limiting mechanism, and the reset spring is used to drive the trigger rod to reset.

[0018] Preferably, the vibration trigger mechanism further includes an airbag, which is arranged inside the trigger rod. When the friction generated by the vibration causes the temperature of the locking block to rise, the airbag will expand and trigger the opening of the clamping balance mechanism and the feed limit mechanism.

[0019] Preferably, a limiting slot is provided inside the part slot, and the clamping reinforcement mechanism includes a clamping push rod and a clamping block, the clamping push rod is provided on the locking block, the clamping block is connected to the clamping push rod, and the clamping block is connected to the limiting slot, and the side of the limiting slot in contact with the clamping block is in a closed state, and when the clamping push rod drives the clamping block to move, the clamping block presses against the closed end of the limiting slot and thereby drives the locking block to move toward the part direction.

[0020] Preferably, the feed limit mechanism includes a limit plate, a distance sensor and an adjustment structure, the limit plate is arranged on the mounting frame, the limit plate is provided with a limit hole, the telescopic end of the feed push rod is inserted into the limit hole, a plurality of distance sensors are arranged around the limit hole, the distance sensor is used to detect the position of the feed push rod, the adjustment structure is arranged in the limit hole, and the adjustment structure is used to adjust the size of the limit hole to limit the moving direction of the feed push rod.

[0021] Preferably, the adjustment structure includes a mounting ring, a driving ring, an adjustment motor and a plurality of adjustment blocks, the mounting ring is mounted on the limiting hole, the driving ring is connected to the mounting ring, the adjustment motor is used to drive the driving ring to rotate, connecting rods are provided on both sides of the adjustment block, the connecting rod at one end of the adjustment block is rotatably connected to the driving ring, the mounting ring is provided with a movable slide groove corresponding to the connecting rod, and the connecting rod on the side of the adjustment block away from the driving ring is connected to the movable slide groove.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention, through the setting of a vibration trigger mechanism, triggers the opening of the clamping enhancement mechanism and the feed limit mechanism by sensing the temperature (airbag) and displacement state of the locking block, effectively fixes the parts through the clamping enhancement mechanism and reduces the shaking of the feed push rod through the feed limit mechanism, and effectively reduces the amplitude of vibration by various means. The present application can also timely detect changes in the vibration state of the parts, thereby judging the stability of the part fixation, which helps to prevent the parts from falling off or being damaged due to loose locking blocks or excessive vibrations, and can also ensure the accuracy and stability of the parts during the processing process, thereby improving the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the axial structure of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the partial enlarged structure of the middle A area;

[0025] Figure 3 This is a schematic diagram of the structure of the rotating disk of the present invention;

[0026] Figure 4 for Figure 3 A schematic diagram of the partial enlarged structure of the middle B area (the clamping seat is omitted);

[0027] Figure 5 This is a schematic diagram of the internal structure of the parts slot of the present invention;

[0028] Figure 6 This is a schematic diagram of the axial structure of the locking block of the present invention;

[0029] Figure 7 This is a schematic diagram of the connection structure between the locking block and the parts slot of the present invention;

[0030] Figure 8 for Figure 7 Schematic diagram of the partial enlarged structure of the middle C area;

[0031] Fig. 9 This is a schematic diagram of the structure of the limit plate and the regulating motor of the present invention;

[0032] Fig.10 This is a schematic diagram of the connection of the components of the regulating structure of the present invention;

[0033] Fig.11 This is a schematic diagram of the connection structure between the mounting ring and the adjusting block of the present invention.

[0034] In the figure: 1 frame, 2 rotating disk, 3 part slot, 4 tapping tool, 5 rotating motor, 6 locking block, 7 locking knob, 8 mounting frame, 9 feed push rod, 10 driving motor, 11 trigger push rod, 12 trigger plate, 13 trigger rod, 14 return spring, 15 air bag, 16 clamping push rod, 17 clamping block, 18 limit plate, 19 distance sensor, 20 mounting ring, 21 driving ring, 22 adjusting motor, 23 adjusting block, 100 clamping seat, 301 limit slide groove, 601 mounting groove, 1201 protruding block, 2001 moving slide groove. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-11, the present invention provides a technical solution:

[0037] A rotary automatic tapping machine, as shown in the attached manual Figure 1 As shown, including:

[0038] A frame 1 is provided with a rotating disk 2, and the rotating disk 2 is provided with a plurality of part slots 3. In this embodiment, the part slots 3 are arranged in a circular array, and the part slots 3 are used to install parts that need to be tapped;

[0039] A rotating assembly, which is disposed on the rotating disk 2 and is used to drive the rotating disk 2 to rotate;

[0040] The clamping assembly is arranged on the rotating disk 2. The clamping assembly includes a clamping seat 100 and a locking mechanism. The clamping seat 100 is used to install the locking knob 7. The locking mechanism is used to drive the clamping seat 100 to clamp and fix the parts.

[0041] The tapping assembly includes a feeding mechanism and a tapping tool 4, and the feeding mechanism is used to drive the tapping tool 4 to tap the part;

[0042] The adjustment component includes a vibration trigger mechanism, a clamping enhancement mechanism and a feed limit mechanism. The vibration trigger mechanism is used to start the vibration balancing mechanism and the feed limit mechanism when the part shakes. The clamping enhancement mechanism is used to enhance the clamping force of the locking mechanism on the part. The feed limit mechanism is used to limit the moving direction of the feed mechanism.

[0043] The tapping tool 4 and the part slot 3 are correspondingly arranged. The correspondingly arranged tapping tool 4 is used to tap different threaded holes of the part. The rotating assembly is used to drive the rotating disk 2 to rotate so as to rotate the part in the part slot 3 to the bottom of different tapping tools 4 for tapping.

[0044] The rotating assembly includes a rotating motor 5, which is a servo motor that can accurately control the rotation angle. Therefore, the rotating motor 5 can drive the parts on the rotating disk 2 to accurately rotate under the corresponding rotating tool. The rotating motor 5 is set on the frame 1 and is used to drive the rotating disk 2 to rotate.

[0045] The clamping seat 100 and the locking mechanism are both arranged corresponding to the part slot 3. The locking mechanism includes a locking block 6 and a locking knob 7. The clamping seat 100 is fixedly connected to the part slot 3 by bolts. The locking knob 7 is threadedly connected to the clamping seat 100. One end of the locking knob 7 is rotatably connected to the locking block 6. The locking block 6 is slidably connected to the part slot 3. The locking knob 7 is used to drive the locking block 6 to move along the part slot 3 by rotating it.

[0046] The feeding mechanism includes a mounting frame 8, a feeding push rod 9 and a driving motor 10. The mounting frame 8 is fixedly connected to the frame 1. The mounting frame 8 is used to install the feeding push rod 9. The feeding push rod 9 is a DC hydraulic push rod. The mounting frame 8 is fixedly connected to the feeding push rod 9. The driving motor 10 is a brushless DC motor. Therefore, it is suitable for occasions that require reliability and long-term continuous operation in this embodiment. One end of the driving motor 10 is fixedly connected to the telescopic end of the feeding push rod 9, and the output end of the driving motor 10 is connected to the tapping tool 4.

[0047] The locking block 6 is provided with a mounting groove 601, and the mounting groove 601 is used to install a vibration trigger mechanism, which includes a trigger push rod 11, a trigger plate 12, a trigger rod 13, a reset spring 14 and a photoelectric switch 15. The trigger push rod 11 is a DC hydraulic push rod, and the trigger push rod 11 is symmetrically arranged on both sides of the part groove 3. One end of the trigger push rod 11 is fixedly connected to the side wall of the part groove 3. The trigger push rod 11 is used to drive the trigger plate 12 to move so as to limit the locking block 6. The trigger rod 13 is symmetrically arranged on both sides of the mounting groove 601. The photoelectric switch 15 is arranged inside the mounting groove 601. The photoelectric switch 15 is a reflective laser sensor When the photoelectric switch 15 detects that there is an obstruction in front, it means that the trigger rod 13 is in a contracted state or the airbag 15 is in an expanded state. The trigger plate 12 is provided with a plurality of protrusions 1201. The protrusions 1201 are semicircular protrusions. The protrusions 1201 can increase the friction between the locking block 6 and the part slot 3. At the same time, when the vibration is too large, the trigger rod 13 and the protrusions 1201 will contact each other. The protrusions 1201 will resist the trigger rod 13 and make it move along the installation slot 601 and trigger the photoelectric switch 15 to open the clamping balance mechanism and the feed limit mechanism. The reset spring 14 is used to drive the trigger rod 13 to reset.

[0048] The vibration trigger mechanism also includes an airbag 15, which is made of aramid fiber. The aramid fiber material has high thermal stability and strength, can withstand the expansion pressure under high temperature environment, and is not easy to burn. Hexane is stored in the airbag 15. Hexane will not chemically react with the aramid fiber under the conditions of use of this application. When the temperature is too high, the hexane will vaporize and cause the airbag 15 to expand, and when the temperature drops, the gaseous hexane will reliquefy. One end of the airbag 15 is fixedly connected to the inside of the trigger rod 13, so it can only expand in one direction. When the friction generated by the vibration causes the temperature of the locking block 6 to rise, the airbag 15 will expand and trigger the opening of the clamping balance mechanism and the feed limit mechanism.

[0049] A limiting slot 301 is arranged inside the part slot 3, and the limiting slot 301 is used to limit the movement direction of the clamping block 17. The clamping enhancement mechanism includes a clamping push rod 16 and a clamping block 17. The clamping push rod 16 is also a hydraulic push rod. One end of the clamping push rod 16 is fixedly connected to the locking block 6, and the clamping block 17 is connected to the clamping push rod 16. The clamping block 17 is connected to the limiting slot 301. The side where the limiting slot 301 contacts the clamping block 17 is in a closed state. When the clamping push rod 16 drives the clamping block 17 to move, the clamping block 17 resists the closed end of the limiting slot 301 and drives the locking block 6 to move toward the part direction.

[0050] The feed limit mechanism includes a limit plate 18, a distance sensor 19 and an adjustment structure. The limit plate 18 is arranged on the mounting frame 8. The limit plate 18 is provided with a limit hole. The telescopic end of the feed push rod 9 is inserted into the limit hole. A plurality of distance sensors 19 are arranged around the limit hole. Since the mounting ring 20 and the limit hole are coaxially arranged, in this embodiment, the distance sensor 19 is arranged around the mounting ring 20. The distance sensor 19 is used to detect the position of the feed push rod 9. The adjustment structure is arranged in the limit hole. The adjustment structure is used to adjust the size of the limit hole to limit the moving direction of the feed push rod 9.

[0051] The adjustment structure includes a mounting ring 20, a driving ring 21, an adjusting motor 22 and a plurality of adjusting blocks 23. The mounting ring 20 is fixedly mounted on the limiting hole, the driving ring 21 is rotatably connected to the mounting ring 20, the adjusting motor 22 is used to drive the driving ring 21 to rotate, connecting rods are arranged on both sides of the adjusting block 23, the connecting rod at one end of the adjusting block 23 is rotatably connected to the driving ring 21, the mounting ring 20 is provided with a movable slide groove 2001 corresponding to the connecting rod, the movable slide groove 2001 is used to limit the movement of the connecting rod in contact therewith so that the connecting rod can only move along the movable slide groove 2001, and the connecting rod on the side of the adjusting block 23 away from the driving ring 21 is connected to the movable slide groove 2001.

[0052] Working principle: When installing parts, place the parts to be tapped in the parts slot 3 and rotate the locking knob 7 to drive the locking block to clamp and lock the parts. At this time, start the trigger push rod 11, which will drive the trigger plate 12 to move until the locking block 6 is clamped. Install the parts in each parts slot 3 in turn, and then start the tapping process.

[0053] When tapping, the feed push rod 9 drives the tapping tool 4 to move downward, and the drive motor 10 drives the tapping tool 4 to rotate;

[0054] When the vibration amplitude of the part in the part slot 3 is small, the vibration between the part and the locking block 6 will cause friction, thereby increasing the temperature of the part and the locking block 6. At this time, the airbag 15 in the locking block 6 will expand and open the clamping balance mechanism and the feed limit mechanism through the photoelectric switch 15;

[0055] When the vibration amplitude of the part in the part slot 3 is large, the vibration will cause the locking block 6 to move, and the trigger rod 13 will be lifted by the protruding block 1201 on the trigger plate 12. At this time, the trigger rod 13 will move along the installation slot 601 and then open the clamping balance mechanism and the feed limit mechanism through the photoelectric switch 15;

[0056] When the clamping balance mechanism is turned on, the clamping push rod 16 will start to drive the clamping block 17 to move along the limiting slide groove 301, so as to drive the locking block 6 to clamp the parts through the reaction force;

[0057] When the feed limit mechanism is turned on, the distance sensor 19 will detect the position of the feed push rod 9 in the limit hole, and then adjust the size of the limit hole according to the detection result of the distance sensor 19. When adjusting, start the adjustment motor 22, the adjustment motor 22 will drive the drive ring 21 to rotate and then drive the adjustment block 23 to move, so as to complete the adjustment of the size of the limit hole.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary automatic tapping machine, characterized in that: include: A frame, wherein the frame is provided with a rotating disk, the rotating disk is provided with a plurality of part slots, and the part slots are used to install parts that need to be tapped; A rotating assembly, the rotating assembly being arranged on the rotating disk and used for driving the rotating disk to rotate; A clamping assembly, the clamping assembly is arranged on the rotating disk, the clamping assembly comprises a clamping seat and a locking mechanism, the locking mechanism is used to drive the clamping seat to clamp and fix the parts; A tapping assembly, the tapping assembly comprising a feeding mechanism and a tapping tool, the feeding mechanism being used to drive the tapping tool to tap the part; An adjustment component, the adjustment component includes a vibration trigger mechanism, a clamping enhancement mechanism and a feed limit mechanism, the vibration trigger mechanism is used to start the vibration balancing mechanism and the feed limit mechanism when the part shakes or the temperature rises, the clamping enhancement mechanism is used to enhance the clamping force of the locking mechanism on the part, and the feed limit mechanism is used to limit the moving direction of the feed mechanism.

2. A rotary automatic tapping machine according to claim 1, characterized in that: The tapping tools and the part slots are arranged correspondingly, and the rotating assembly is used to drive the rotating disk to rotate so as to rotate the parts in the part slots to under different tapping tools for tapping.

3. A rotary automatic tapping machine according to claim 1, characterized in that: The rotating assembly includes a rotating motor, which is arranged on the frame and is used to drive the rotating disk to rotate.

4. A rotary automatic tapping machine according to claim 2, characterized in that: The clamping seat and the locking mechanism are both arranged corresponding to the part slot, and the locking mechanism includes a locking block and a locking knob. The clamping seat is arranged in the part slot, the locking knob is connected to the clamping seat, the locking knob is connected to the locking block, and the locking block is slidably connected to the part slot. The locking knob is rotated to drive the locking block to move along the part slot.

5. A rotary automatic tapping machine according to claim 4, characterized in that: The feeding mechanism comprises a mounting frame, a feeding push rod and a driving motor. The mounting frame is mounted on the frame, the feeding push rod is provided on the mounting frame, the driving motor is connected to the telescopic end of the feeding push rod, and the driving motor is connected to the tapping tool.

6. A rotary automatic tapping machine according to claim 5, characterized in that: The locking block is provided with a mounting groove, and the vibration trigger mechanism comprises a trigger push rod, a trigger plate, a trigger rod, a reset spring and a photoelectric switch. The trigger push rod is arranged on the side wall of the part groove, and the trigger push rod is used to drive the trigger plate to move so as to limit the locking block. The trigger rod is symmetrically arranged on both sides of the mounting groove, and the photoelectric switch is arranged inside the mounting groove. The trigger plate is provided with a plurality of protrusions. When the trigger rod and the protrusions contact each other, the protrusions will resist the trigger rod and make it move along the mounting groove and trigger the photoelectric switch to open the clamping balance mechanism and the feed limit mechanism, and the reset spring is used to drive the trigger rod to reset.

7. A rotary automatic tapping machine according to claim 6, characterized in that: The vibration trigger mechanism also includes an airbag, which is arranged inside the trigger rod. When the friction generated by the vibration causes the temperature of the locking block to rise, the airbag will expand and trigger the opening of the clamping balance mechanism and the feed limit mechanism.

8. A rotary automatic tapping machine according to claim 7, characterized in that: A limiting slot is arranged inside the part slot, and the clamping reinforcement mechanism includes a clamping push rod and a clamping block, the clamping push rod is arranged on the locking block, the clamping block is connected to the clamping push rod, and the clamping block is connected to the limiting slot, and the side of the limiting slot in contact with the clamping block is in a closed state. When the clamping push rod drives the clamping block to move, the clamping block presses against the closed end of the limiting slot and drives the locking block to move toward the part direction.

9. A rotary automatic tapping machine according to claim 8, characterized in that: The feed limit mechanism includes a limit plate, a distance sensor and an adjustment structure. The limit plate is arranged on the mounting frame. The limit plate is provided with a limit hole. The telescopic end of the feed push rod is inserted into the limit hole. A plurality of distance sensors are arranged around the limit hole. The distance sensor is used to detect the position of the feed push rod. The adjustment structure is arranged in the limit hole. The adjustment structure is used to adjust the size of the limit hole to limit the moving direction of the feed push rod.

10. The rotary automatic tapping machine according to claim 1, characterized in that: The adjustment structure includes a mounting ring, a driving ring, an adjustment motor and a plurality of adjustment blocks. The mounting ring is mounted on the limiting hole, the driving ring is connected to the mounting ring, and the adjustment motor is used to drive the driving ring to rotate. Connecting rods are provided on both sides of the adjustment block. The connecting rod at one end of the adjustment block is rotatably connected to the driving ring. The mounting ring is provided with a movable slide groove corresponding to the connecting rod, and the connecting rod on the side of the adjustment block away from the driving ring is connected to the movable slide groove.

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