Thread machining system for micro screw

Abstract

The invention provides a thread machining system for micro screws, and relates to the field of screw machining. The machining system is composed of a conveying assembly and a machining assembly, the machining assembly is provided with six tapping mechanisms capable of being freely switched, tapping sleeves of different specifications are installed at the bottoms of the tapping mechanisms, by switching the tapping mechanisms, the machining requirements of screws of different specifications can be rapidly met, multi-stage tapping continuous operation can be achieved, and the machining efficiency is improved. The tapping sleeve does not need to be frequently disassembled, assembled and replaced, the tapping machining efficiency is greatly improved, and the problems that the bottom of a tapping assembly of a micro screw machining system generally can only adapt to a tapping sleeve or a tool of a single model, and rapid tapping of screws of different specifications and multi-stage continuous tapping machining operation of the screws cannot be achieved are solved.

Description

Technical Field

[0001] This invention relates to the field of screw processing technology, and more particularly to a thread processing system for miniature screws. Background Technology

[0002] Miniature screws are widely used in various industries, serving to fasten and connect components, ensuring compact assembly and stable operation of equipment. The general processing flow for miniature screws is as follows: first, a conveying system (such as a robotic arm working with a rotating disk) precisely positions and fixes the screw rod; then, a tapping system taps the fixed rod to create threads; finally, subsequent processing steps result in a finished miniature screw that meets precision requirements. For example, patent application number CN202310378120.4 discloses a tapping machine and its processing method for screw processing, including a worktable, a clamping assembly, a heat sink, and a frame. The inner wall of the clamping assembly is provided with a limiting cylinder, and a rack is installed through the inner wall of the limiting ring. A positioning block is fixedly installed at one end of the rack. Multiple power supply components and multiple miniature motors are installed on the inner wall of the clamping assembly. This invention enables the rapid fixing of screws of different sizes by installing a clamping assembly and a positioning block. When using a tapping machine to process and tap the screw, the screw to be processed is placed inside the limiting cylinder, and the output end of the micro motor rotates, which drives the rack to slide through the gear. When the rack moves, it pushes the positioning block to move. After the positioning block moves to the outer wall of the screw to be processed, it positions and clamps the screw. This invention can clamp screws of different sizes, achieving the purpose of quickly fixing and clamping bolts of different sizes.

[0003] As with the existing micro screw processing systems mentioned above, the bottom of the tapping assembly can usually only be fitted with a single type of tapping sleeve or tool. However, in actual production, on the one hand, it is necessary to process micro screws of different specifications, and on the other hand, some screws require multiple tapping stages to complete the thread processing (taking small-diameter high-strength alloy micro screws as an example, because the material is hard and the cutting force is large, tapping once can easily cause tool wear and workpiece deformation, so it is necessary to pre-tap a small size first, and then change the tool for fine tapping). This requires multiple specifications of tapping sleeves and tools to work together. As a result, it is necessary to frequently disassemble and replace tapping sleeves or tools during processing, which is cumbersome and seriously reduces the overall efficiency of micro screw tapping processing. It is also less flexible and less practical. Summary of the Invention

[0004] This invention relates to a thread processing system for miniature screws. The system includes a conveying component that enables automatic screw loading and unloading during processing, achieving a high degree of automation. The processing component is equipped with six freely switchable tapping mechanisms, each with a tapping sleeve of different specifications at its bottom. By switching the tapping mechanism, it can quickly adapt to the processing needs of screws of different specifications and achieve multi-stage continuous tapping operations without frequent disassembly and replacement of the tapping sleeve, significantly improving tapping efficiency. Simultaneously, the tapping mechanism is equipped with a protective mechanism to effectively prevent damage to the tapping sleeve due to the high hardness of the screw. The system is stable in use and possesses strong flexibility, stability, and practicality.

[0005] This invention provides a thread processing system for miniature screws, specifically comprising: a mounting component and a processing system; the mounting component includes a worktable, a track frame, and a lifting push rod, the track frame being fixedly mounted on the top of the worktable, and the lifting push rod being fixedly mounted on the side of the track frame; the processing system consists of a conveying component and a processing component, the conveying component including a rotary conveyor plate, the rotary conveyor plate being mounted on the top of the worktable; the processing component consists of a drive control mechanism and a tapping mechanism;

[0006] The drive control mechanism includes a track seat and a switching seat. The track seat is inserted into the inside of the track frame, and the top of the track seat is fixedly installed at the bottom of the lifting push rod. The tapping mechanism includes a positioning frame, a linkage shaft, a tapping gear, a tapping shaft, and an alignment block. The positioning frame is axially inserted into the inside of the switching seat, and the linkage shaft is rotatably connected to the inside of the switching seat. The tapping gear is rotatably connected to the inside of the switching seat, and the tapping shaft is inserted into the bottom of the linkage shaft. The alignment block is radially inserted into the inside of the linkage shaft.

[0007] Furthermore, the conveying assembly also includes a loading robotic arm and a unloading robotic arm, and the rotary conveyor is equipped with a pneumatic chuck inside. The loading robotic arm grabs the untapping screw and moves it into the pneumatic chuck of the rotary conveyor for fixation, while the unloading robotic arm removes the tapped screw from the rotary conveyor and moves it to the subsequent processing station.

[0008] Furthermore, the drive control mechanism also includes a drive motor, an indexing motor, and a drive rod. The drive motor is fixedly installed on the top of the track seat, the indexing motor is fixedly installed on the top of the track seat, and the indexing motor and the switching seat are connected by gear transmission. The drive rod is rotatably connected inside the track seat, and the top end of the drive rod is connected to the rotating shaft of the drive motor.

[0009] Furthermore, the tapping mechanism is provided in six groups, and the six groups of tapping mechanisms are arranged in a circular array inside the switching seat. The included angle between adjacent tapping mechanisms is 60 degrees, and different types of tapping sleeves are installed at the bottom of the tapping shafts of the six groups of tapping mechanisms.

[0010] Furthermore, the track seat has a switching positioning groove inside, and the side of the positioning frame has a positioning protrusion. The positioning protrusion is inserted into the switching positioning groove, and the positioning frame can move axially inside the switching seat.

[0011] Furthermore, the switching positioning groove consists of a high-position groove, a low-position groove, and two connecting grooves. Both the high-position groove and the low-position groove are arc-shaped grooves, and the connecting grooves are spiral-shaped grooves. The two ends of the high-position groove are connected to the tops of the two connecting grooves, and the two ends of the low-position groove are connected to the bottoms of the two connecting grooves. The included angle of the high-position groove is 240 degrees, and the included angle of the low-position groove is 20 degrees.

[0012] Furthermore, the bottom of the drive rod is provided with a drive gear, and the drive gear and the tapping gear mesh with each other. The sides of the tapping gear and the alignment block are both designed with inclined chamfers, and the tapping gear is provided with an alignment transmission groove inside.

[0013] Furthermore, the alignment block is provided with a clutch top spring inside, and the two ends of the clutch top spring abut against the inside of the alignment block and the inside of the linkage shaft, respectively.

[0014] Furthermore, the middle section of the tapping shaft has a regular polygonal cross-section, and the bottom of the linkage shaft is provided with a drive groove, with the regular polygonal section of the tapping shaft inserted into the drive groove.

[0015] Furthermore, the tapping shaft is provided with a protective top spring inside, and the two ends of the protective top spring abut against the inside of the tapping shaft and the inside of the linkage shaft, respectively.

[0016] This invention provides a thread processing system for miniature screws, which has the following advantages:

[0017] The conveying assembly enables automatic screw loading and unloading during processing, achieving a high degree of automation. The processing assembly is equipped with six freely switchable tapping mechanisms, each with a different sized tapping sleeve at its bottom. By switching tapping mechanisms, it can quickly adapt to the processing needs of different screw sizes and achieve multi-stage continuous tapping operations without frequent disassembly and replacement of tapping sleeves, significantly improving tapping efficiency. At the same time, the tapping mechanism is equipped with a protective mechanism to effectively prevent damage to the tapping sleeve due to the high hardness of the screws, ensuring stable operation and improving the flexibility, stability, and practicality of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram:

[0021] Figure 1 A schematic diagram of the structure of the present invention is shown.

[0022] Figure 2 A schematic diagram of the internal structure of the present invention is shown.

[0023] Figure 3 The present invention is shown. Figure 2 Enlarged structural diagram of part A in the middle.

[0024] Figure 4 A schematic diagram of the disassembled drive control mechanism of the present invention is shown.

[0025] Figure 5 A schematic diagram of the disassembled tapping mechanism of the present invention is shown.

[0026] Figure 6 A schematic diagram of the internal structure of the track seat of the present invention is shown.

[0027] Figure 7 A schematic diagram of the structure of the present invention for switching the path of the positioning groove is shown.

[0028] Figure 8 The diagram shows the internal structure of the present invention when the alignment block does not accurately match the alignment transmission groove after the tapping mechanism is switched.

[0029] Figure 9 The present invention is shown. Figure 8 Enlarged structural diagram of part B in the middle.

[0030] Figure 10 The present invention is shown. Figure 2 A schematic diagram of the internal structure of the tapping mechanism when the protection function is triggered.

[0031] List of reference numerals

[0032] 1. Installation components; 101. Workbench; 102. Track frame; 103. Lifting push rod;

[0033] 2. Rotary conveyor plate;

[0034] 3. Drive control mechanism; 301. Track seat; 311. Switching positioning slot; 3111. High position slot; 3112. Low position slot; 3113. Connecting slot; 302. Switching seat; 303. Drive motor; 304. Indexing motor; 305. Drive rod; 3051. Drive gear;

[0035] 4. Tapping mechanism; 401. Positioning frame; 4011. Positioning protrusion; 402. Linkage shaft; 403. Tapping gear; 4031. Alignment transmission groove; 404. Tapping shaft; 4041. Protective top spring; 405. Alignment block; 4051. Clutch top spring;

[0036] 5. Tapping sleeve. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please refer to Figures 1 to 10 Example 1:

[0039] This invention proposes a thread processing system for miniature screws, comprising: a mounting component 1 and a processing system; the mounting component 1 includes a worktable 101, a track frame 102, and a lifting push rod 103, the track frame 102 being fixedly mounted on the top of the worktable 101, and the lifting push rod 103 being fixedly mounted on the side of the track frame 102; the processing system consists of a conveying component and a processing component, the conveying component including a rotary conveyor 2, the rotary conveyor 2 being mounted on the top of the worktable 101; the processing component consists of a drive control mechanism 3 and a tapping mechanism 4;

[0040] The drive control mechanism 3 includes a track seat 301 and a switching seat 302. The track seat 301 is inserted into the inside of the track frame 102, and the top of the track seat 301 is fixedly installed at the bottom of the lifting push rod 103. The tapping mechanism 4 includes a positioning frame 401, a linkage shaft 402, a tapping gear 403, a tapping shaft 404, and an alignment block 405. The positioning frame 401 is axially inserted into the inside of the switching seat 302, and the linkage shaft 402 is rotatably connected to the inside of the switching seat 302. The tapping gear 403 is rotatably connected to the inside of the switching seat 302, and the tapping shaft 404 is inserted into the bottom of the linkage shaft 402. The alignment block 405 is radially inserted into the inside of the linkage shaft 402.

[0041] The drive control mechanism 3 also includes a drive motor 303, an indexing motor 304, and a drive rod 305. The drive motor 303 is fixedly installed on the top of the track seat 301, the indexing motor 304 is fixedly installed on the top of the track seat 301, and the indexing motor 304 is connected to the switching seat 302 through gear transmission. The drive rod 305 is rotatably connected inside the track seat 301, and the top end of the drive rod 305 is connected to the rotating shaft of the drive motor 303 through transmission.

[0042] The conveying assembly includes a loading robotic arm and a unloading robotic arm. The rotary conveyor 2 is equipped with a pneumatic chuck. The loading robotic arm picks up the untapping screw and moves it into the pneumatic chuck of the rotary conveyor 2 for fixation. The unloading robotic arm removes the tapped screw from the rotary conveyor 2 and moves it to the subsequent processing station. The conveying assembly can realize automatic loading and unloading of screws during the processing. Its specific structure and working principle are existing mature technologies and will not be described in detail here.

[0043] The tapping mechanism 4 comprises six groups arranged in a circular array inside the switching base 302. The included angle between adjacent tapping mechanisms 4 is 60 degrees. Different types of tapping sleeves 5 are mounted on the bottom of the tapping shaft 404 of each of the six groups. During operation, the processing assembly features six groups of tapping mechanisms 4, each with a different specification of tapping sleeve 5 mounted on its bottom. By switching between the appropriate tapping mechanisms 4, tapping operations on screws of the corresponding specifications can be achieved. Furthermore, the tapping mechanism 4 can... It has the function of switching between different functions and can also meet the continuous operation requirements of multi-stage tapping of screws. It is flexible and convenient to use. When tapping the screw threads, only the tapping mechanism 4 located inside the low groove 3112 is in working state, while the other five tapping mechanisms 4 are in standby state. The other five tapping mechanisms 4 will not rotate or intrude into the tapping working space at this time, ensuring the stable tapping operation and preventing damage to the tapping sleeve 5 at the bottom of these five tapping mechanisms 4 due to accidental contact or collision, thus ensuring stable use.

[0044] The track base 301 has a switching positioning groove 311 inside, and the positioning frame 401 has a positioning protrusion 4011 on its side. The positioning protrusion 4011 is inserted into the switching positioning groove 311, and the positioning frame 401 can move axially inside the switching base 302. The switching positioning groove 311 consists of a high groove 3111, a low groove 3112, and two connecting grooves 3113. The high groove 3111 and the low groove 3112 are both arc-shaped grooves, and the connecting grooves 3113 are spiral-shaped grooves. The two ends of the high groove 3111 are connected to the top ends of the two connecting grooves 3113, and the two ends of the low groove 3112 are connected to the bottom ends of the two connecting grooves 3113. The groove of the high groove 3111... The included angle of the body is 240 degrees, and the included angle of the groove body of the low-position groove 3112 is 20 degrees. In use, under the cooperation of the positioning protrusion 4011 and the low-position groove 3112, the tapping mechanism 4 located in the low-position groove 3112 is in the state of extending out of the bottom of the switching seat 302. At this time, under the action of the clutch top spring 4051, the alignment block 405 is inserted into the inside of the alignment transmission groove 4031, so that when the drive motor 303 rotates, it can drive the drive rod 305 to rotate. The bottom of the drive rod 305 is provided with a drive gear 3051, and the drive gear 3051 and the tapping gear 403 mesh and transmit power. The inside of the tapping gear 403 is provided with an alignment transmission groove 4031, and the drive rod 305 can transmit power when rotating. The drive gear 3051 drives the tapping gear 403 to rotate. When the tapping gear 403 rotates, the alignment transmission groove 4031 can drive the linkage shaft 402 to rotate through the alignment block 405. The cross-sectional shape of the middle shaft of the tapping shaft 404 is a regular polygon, and the bottom of the linkage shaft 402 is provided with a drive groove. The regular polygonal cross-section of the tapping shaft 404 is inserted into the drive groove. When the linkage shaft 402 rotates, it can drive the tapping shaft 404 and the tapping sleeve 5 at its bottom to rotate through the drive groove. The lifting push rod 103 drives the processing component to descend, and the tapping sleeve 5 can be used to tap the screw directly below it. It is flexible and convenient to use. At this time, the other five sets of tapping mechanisms 4 will be positioned on the positioning protrusion 4011 and the high position. Under the action of groove 3111, the mechanism is in a lifted state and will not intrude into the tapping workspace. At this time, the alignment blocks 405 of the five sets of tapping mechanisms 4 are separated from their corresponding alignment transmission grooves 4031. Therefore, the tapping gears 403 of the five sets of tapping mechanisms 4 will idle and will not drive the tapping sleeves 5 to rotate. This avoids damage and injury to the tapping sleeves 5 at the bottom of the five sets of tapping mechanisms 4 due to accidental contact. The machining is safe and efficient. When it is necessary to switch tapping mechanisms 4 for use, the switching action can be achieved through the indexing motor 304. Each time the indexing motor 304 is energized, it can drive the switching seat 302 to rotate 60 degrees, thereby realizing the sequential switching of the tapping mechanisms 4. When the switching seat 302 rotates 60 degrees...At this time, the tapping mechanism 4, which was originally located in the lower slot 3112, will enter the interior of the higher slot 3111 through the connecting slot 3113 on the side of its rotation direction. Thus, under the guidance of the positioning protrusion 4011 and the connecting slot 3113, the positioning frame 401, the linkage shaft 402, the tapping shaft 404, and the tapping sleeve 5 will all be lifted, and the alignment block 405 will separate from the alignment transmission slot 4031. At this time, the first set of tapping mechanisms 4, which rotates in the opposite direction, will be connected by another connecting slot 3112. The 113 mechanism enters the lower slot 3112, causing the positioning frame 401, linkage shaft 402, tapping shaft 404, and tapping sleeve 5 to be lowered. The alignment block 405 is then inserted into the alignment transmission slot 4031, synchronously driving the tapping gear 403 and linkage shaft 402. This allows for tapping of screws using this set of tapping mechanisms 4. As the switching seat 302 continues to rotate, it can be switched to the next tapping mechanism 4 for use, offering convenient and quick switching and flexible operation.

[0045] The alignment block 405 has a clutch top spring 4051 inside, with its two ends abutting against the inside of the alignment block 405 and the inside of the linkage shaft 402, respectively. The tapping gear 403 and the opposing sides of the alignment block 405 are both designed with chamfered edges. This design ensures that when the positioning frame 401, linkage shaft 402, tapping shaft 404, and tapping sleeve 5 are lowered, if the alignment block 405 is not precisely matched inside the alignment transmission groove 4031, the chamfered edges will allow the alignment block 405 to be properly aligned. The retraction of the linkage shaft 402 to avoid and compress the clutch top spring 4051 will not hinder the lowering action of the positioning frame 401, linkage shaft 402, tapping shaft 404 and tapping sleeve 5. Afterwards, when the tapping gear 403 rotates, after the alignment transmission groove 4031 and the alignment block 405 are matched, under the action of the clutch top spring 4051, the alignment block 405 will insert into the interior of the alignment transmission groove 4031 to complete the synchronous transmission action of the tapping gear 403 and the linkage shaft 402. The device will not jam and is stable and efficient in use.

[0046] The tapping spindle 404 is equipped with a protective top spring 4041, with its two ends abutting against the interior of the tapping spindle 404 and the linkage shaft 402, respectively. During use, the tapping mechanism 4 has a protective structure that effectively prevents damage to the tapping sleeve 5 due to the high hardness of the screw. During normal tapping, the tapping resistance is less than the elastic force of the protective top spring 4041, so the actual downward movement distance of the tapping sleeve 5 is the same as the extension of the lifting push rod 103, enabling stable tapping operations. When the screw hardness is high... When factors such as height cause tapping difficulties for the tapping sleeve 5, the actual downward movement distance of the tapping sleeve 5 is less than the extension of the lifting push rod 103. As a result, the tapping sleeve 5 will compress the protective top spring 4041 to avoid the extension action of the lifting push rod 103 and prevent damage to the tapping sleeve 5. (If the lifting push rod 103 and the tapping sleeve 5 are rigidly transmitted in the lifting direction, the lifting push rod 103 will forcibly drive the tapping sleeve 5 downward when tapping is difficult, which will lead to damage to the cutting teeth of the tapping sleeve 5 and misalignment of the screw threads.)

[0047] The specific usage and function of this embodiment: In this invention, the conveying component can realize the loading and unloading of screws during the processing. The processing component is equipped with six sets of tapping mechanisms 4, and the bottom of each of the six sets of tapping mechanisms 4 is equipped with tapping sleeves 5 of different specifications. Thus, during processing, by switching the corresponding tapping mechanism 4, the tapping operation of screws of the corresponding specifications can be realized. The function of switching the tapping mechanism 4 can also realize the continuous operation requirements of multi-stage tapping of screws. It is flexible and convenient to use. When tapping the screw threads, only the tapping mechanism 4 located inside the low groove 3112 is in the working state, while the other five sets of tapping mechanisms 4 are in the standby state. The other five sets of tapping mechanisms 4 will not rotate at this time. The movement will not intrude into the tapping workspace, ensuring stable tapping operations while preventing damage or injury to the tapping sleeves 5 at the bottom of the five tapping mechanisms 4 due to accidental contact. With the cooperation of the positioning protrusion 4011 and the low-position groove 3112, the tapping mechanism 4 in the low-position groove 3112 is extended from the bottom of the switching seat 302. At this time, under the action of the clutch top spring 4051, the alignment block 405 is inserted into the alignment transmission groove 4031. Thus, when the drive motor 303 rotates, it can drive the drive rod 305 to rotate. When the drive rod 305 rotates, it can drive the tapping gear 403 to rotate through the drive gear 3051. When the tapping gear 403 rotates, the alignment transmission groove 4031 can... The alignment block 405 drives the linkage shaft 402 to rotate. When the linkage shaft 402 rotates, it drives the tapping spindle 404 and the tapping sleeve 5 at its bottom to rotate through the drive groove. The lifting push rod 103 drives the processing component to descend, and the tapping sleeve 5 can then be used to tap the screw directly below it. This is flexible and convenient to use. At this time, the other five sets of tapping mechanisms 4 are in a raised state under the action of the positioning protrusion 4011 and the high position groove 3111, and will not intrude into the tapping work space. At this time, the alignment blocks 405 of these five sets of tapping mechanisms 4 are separated from the corresponding alignment transmission grooves 4031, so the tapping gears 403 of these five sets of tapping mechanisms 4 will rotate freely and will not drive the tapping sleeve 5 to rotate, thus avoiding tapping at the bottom of these five sets of tapping mechanisms 4. Damage to the sleeve 5 and injuries caused by accidental contact or impact can occur. When switching to the tapping mechanism 4 is required, the switching action can be achieved through the indexing motor 304. Each time the indexing motor 304 is energized, it drives the switching seat 302 to rotate 60 degrees, thereby enabling the sequential switching of the tapping mechanism 4. When the switching seat 302 rotates 60 degrees, the tapping mechanism 4, which was originally in the lower slot 3112, will enter the interior of the higher slot 3111 through the connecting slot 3113 on the side of its rotation direction. Under the guidance of the positioning protrusion 4011 and the connecting slot 3113, the positioning frame 401, the linkage shaft 402, the tapping shaft 404, and the tapping sleeve 5 will all be lifted, and the alignment block 405 will separate from the alignment transmission groove 4031.Meanwhile, the first set of tapping mechanisms 4, rotating in the opposite direction, enters the lower slot 3112 through another connecting slot 3113. This lowers the positioning frame 401, linkage shaft 402, tapping shaft 404, and tapping sleeve 5. The alignment block 405 is then inserted into the alignment transmission slot 4031, synchronously driving the tapping gear 403 and linkage shaft 402. Afterward, this set of tapping mechanisms 4 can be used to tap screws. As the switching seat 302 continues to rotate, the next tapping mechanism 4 can be switched for use. The tapping gear 403 and the alignment block... The opposite sides of 405 are all designed with beveled edges. This allows the positioning block 405 to retract into the linkage shaft 402 and compress the clutch spring 4051 after the positioning frame 401, linkage shaft 402, tapping shaft 404, and tapping sleeve 5 are lowered. If the alignment block 405 is not precisely matched inside the alignment transmission groove 4031, the beveled edges will cause the alignment block 405 to retract into the linkage shaft 402 and compress the clutch spring 4051. This will not hinder the lowering action of the positioning frame 401, linkage shaft 402, tapping shaft 404, and tapping sleeve 5. Furthermore, when the tapping gear 403 rotates, the alignment transmission groove 403... After the alignment block 405 is matched with the position of the engagement spring 4051, the engagement block 405 will insert into the alignment transmission groove 4031 to complete the synchronous transmission of the tapping gear 403 and the linkage shaft 402 without jamming the device. The tapping mechanism 4 has a protective structure, which can effectively prevent the tapping sleeve 5 from being damaged due to the high hardness of the screw. During normal tapping, the tapping resistance is less than the elastic force of the protective spring 4041. Therefore, the actual downward movement distance of the tapping sleeve 5 is the same as the extension of the lifting push rod 103, which can stably perform tapping operation. When tapping becomes difficult due to factors such as the high hardness of the screw, the actual downward movement of the tapping sleeve 5 is less than the extension of the lifting push rod 103. In this case, the tapping sleeve 5 will compress the protective top spring 4041 to prevent the lifting push rod 103 from extending, thus avoiding damage to the tapping sleeve 5. (If the lifting push rod 103 and the tapping sleeve 5 are rigidly connected in the lifting direction, the lifting push rod 103 will forcibly move the tapping sleeve 5 downwards when tapping becomes difficult, leading to damage to the tapping sleeve 5's cutting teeth and misalignment of the screw threads.)

Claims

1. A thread processing system for miniature screws, comprising: The mounting component (1) and the processing system are described. The mounting component (1) includes a worktable (101), a track frame (102), and a lifting push rod (103). The track frame (102) is fixedly installed on the top of the worktable (101), and the lifting push rod (103) is fixedly installed on the side of the track frame (102). The processing system consists of a conveying component and a processing component. The conveying component includes a rotary conveyor (2), and the rotary conveyor (2) is installed on the top of the worktable (101). The processing component consists of a drive control mechanism (3) and a tapping mechanism (4). The drive control mechanism (3) includes a track seat (301) and a switching seat (302). The track seat (301) is inserted into the inside of the track frame (102), and the top of the track seat (301) is fixedly installed at the bottom of the lifting push rod (103). The tapping mechanism (4) includes a positioning frame (401), a linkage shaft (402), a tapping gear (403), a tapping shaft (404), and an alignment block (405). The positioning frame (401) is axially inserted into the inside of the switching seat (302), and the linkage shaft (402) is rotatably connected to the inside of the switching seat (302). The tapping gear (403) is rotatably connected to the inside of the switching seat (302), and the tapping shaft (404) is inserted into the bottom of the linkage shaft (402). The alignment block (405) is inserted into the inside of the linkage shaft (402) radially.

2. The thread processing system for miniature screws according to claim 1, characterized in that, The conveying assembly also includes a loading robot arm and a unloading robot arm, and the rotary conveyor (2) is equipped with a pneumatic chuck. The loading robot arm grabs the untapping screw and moves it to the pneumatic chuck of the rotary conveyor (2) for fixation, and the unloading robot arm removes the tapped screw from the rotary conveyor (2) and moves it to the subsequent processing station.

3. The thread processing system for miniature screws according to claim 2, characterized in that, The drive control mechanism (3) also includes a drive motor (303), an indexing motor (304), and a drive rod (305). The drive motor (303) is fixedly installed on the top of the track seat (301), the indexing motor (304) is fixedly installed on the top of the track seat (301), and the indexing motor (304) is connected to the switching seat (302) through gear transmission. The drive rod (305) is rotatably connected inside the track seat (301), and the top of the drive rod (305) is connected to the rotating shaft of the drive motor (303) through transmission.

4. The thread processing system for a miniature screw according to claim 3, characterized in that, The tapping mechanism (4) is provided in six groups, and the six groups of tapping mechanisms (4) are arranged in a ring array inside the switching seat (302). The included angle between adjacent tapping mechanisms (4) is sixty degrees, and different types of tapping sleeves (5) are installed at the bottom of the tapping shaft (404) of the six groups of tapping mechanisms (4).

5. The thread processing system for a miniature screw according to claim 4, characterized in that, The track seat (301) is provided with a switching positioning groove (311) inside, and the positioning frame (401) is provided with a positioning protrusion (4011) on the side. The positioning protrusion (4011) is inserted into the switching positioning groove (311), and the positioning frame (401) can move along its axial direction inside the switching seat (302).

6. The thread processing system for a miniature screw according to claim 5, characterized in that, The switching positioning groove (311) consists of a high groove (3111), a low groove (3112), and two connecting grooves (3113). The high groove (3111) and the low groove (3112) are both arc-shaped grooves, and the connecting groove (3113) is a spiral groove. The two ends of the high groove (3111) are connected to the top of the two connecting grooves (3113) respectively, and the two ends of the low groove (3112) are connected to the bottom of the two connecting grooves (3113) respectively. The included angle of the high groove (3111) is 240 degrees, and the included angle of the low groove (3112) is 20 degrees.

7. The thread processing system for a miniature screw according to claim 6, characterized in that, The bottom of the drive rod (305) is provided with a drive gear (3051), and the drive gear (3051) and the tapping gear (403) mesh with each other. The opposite sides of the tapping gear (403) and the alignment block (405) are both designed with inclined chamfers, and the tapping gear (403) is provided with an alignment transmission groove (4031) inside.

8. The thread processing system for a miniature screw according to claim 7, characterized in that, The alignment block (405) is provided with a clutch top spring (4051) inside, and the two ends of the clutch top spring (4051) abut against the inside of the alignment block (405) and the inside of the linkage shaft (402) respectively.

9. The thread processing system for a miniature screw according to claim 8, characterized in that, The middle section of the tapping spindle (404) has a regular polygonal cross-section, and the bottom of the linkage shaft (402) is provided with a drive groove. The regular polygonal section of the tapping spindle (404) is inserted into the drive groove.

10. The thread processing system for a miniature screw according to claim 9, characterized in that, The tapping spindle (404) is provided with a protective top spring (4041) inside, and the two ends of the protective top spring (4041) abut against the inside of the tapping spindle (404) and the inside of the linkage shaft (402) respectively.

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