Automatic nut inner hole thread machining device

Abstract

The invention relates to the technical field of inner hole thread machining, and particularly discloses an automatic nut inner hole thread machining device which comprises a positioning platform assembly, one side of the top of the positioning platform assembly is fixedly connected with a workpiece clamping assembly, and the other side of the top of the positioning platform assembly is provided with a machining assembly. The positioning platform assembly comprises a positioning platform body, and positioning supporting legs are fixedly connected to the four corners of the bottom of the positioning platform body. A second servo motor works to drive a second transmission gear to rotate, then a cutting knife is driven to move, a pushing circular plate is driven to rotate, a pushing column is pushed to move towards the outer side through a pushing arc, and then a limiting circular plate is positioned through a guide rod, so that the pushing column is diffused towards the outer side and stops when the cutting knife makes contact with the inner side of a workpiece; the internal threads with different diameters can be machined by the equipment, the cutting knife can be quickly adjusted, and the machining speed is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of internal hole thread processing, and more specifically to an automatic processing device for internal hole threads of nuts. Background Art

[0002] With the continuous improvement of industrial automation level, thread processing technology, as a key link in mechanical manufacturing, its efficiency and precision directly affect the assembly quality and production cost of parts. As a basic fastener, the traditional processing methods for the internal hole threads of nuts mainly rely on lathes, tapping machines or manual operations, which have problems such as low efficiency, high labor intensity, and poor consistency. Especially in mass production, it is difficult to meet the requirements of modern manufacturing for high precision and high stability.

[0003] At present, although semi-automatic thread processing equipment can partially replace manual labor, it still requires frequent loading and unloading and parameter adjustment, and has insufficient adaptability to nuts with complex specifications. Although numerically controlled machine tools have high precision, their equipment costs are expensive and programming is complex, which limits their application in small and medium-sized enterprises. In addition, existing devices are prone to problems such as broken wires and burrs when processing micro-threads or special materials (such as stainless steel and titanium alloy), resulting in a decrease in the yield rate.

[0004] In recent years, with the development of servo control, machine vision and intelligent sensing technologies, new solutions have emerged for thread processing automation. For example, by integrating feeding, positioning, cutting and detection modules through PLC or industrial robots, unmanned continuous production can be achieved. However, the existing dedicated automatic equipment for internal hole threads of nuts still has the following pain points: one is insufficient flexibility and difficulty in compatible with multi-specification thread processing; the second is that the tool wear monitoring and compensation mechanism is imperfect, affecting long-term stability; the third is that the heat dissipation and chip removal problems under high-speed cutting need to be optimized urgently.

[0005] When the existing automatic processing device for internal hole threads of nuts is in use, there are some deficiencies, which are specifically as follows: When the existing automatic processing device for internal hole threads of nuts processes internal hole threads with different diameters, it takes a lot of time to adjust the cutting tool. Therefore, it is not convenient to quickly process different internal hole threads. And the existing processing only uses a single cutting tool for cutting, so the processing efficiency cannot be guaranteed. Moreover, during the processing of the existing equipment, the cut chips will fly everywhere, which is not convenient to ensure the rapid collection of the chips generated during processing. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automatic processing device for internal hole threads of nuts to solve the problems existing in the above-mentioned background art.

[0007] The present invention provides the following technical solution: An automatic processing device for the internal hole thread of a nut, comprising a positioning platform assembly. On one side of the top of the positioning platform assembly, a workpiece clamping assembly is fixedly connected. On the other side of the top of the positioning platform assembly, a processing assembly is installed. The positioning platform assembly includes a positioning platform main body. At the four corners of the bottom of the positioning platform main body, positioning legs are fixedly connected. On the other side of the top of the positioning platform main body, a guiding slide rail is fixedly connected. On both sides of the guiding slide rail, square baffles are fixedly connected.

[0008] Further, the workpiece clamping assembly includes a first positioning column. At the bottom of the front and back sides of the first positioning column, sliding plates are fixedly connected. On one side of the first positioning column, a positioning circular plate is installed. On one side of the positioning circular plate, a clamping arc plate is installed. On one side of the positioning circular plate, a positioning boss is fixedly connected.

[0009] Further, the processing assembly includes a second positioning column. On one side of the second positioning column, a debris collection groove is installed. On the side surface of the second positioning column, a processing cutting assembly is installed.

[0010] Further, the processing cutting assembly includes a collection pipeline. On the top of the collection pipeline, a first positioning block is fixedly connected. On the top of the first positioning block, a first servo motor is fixedly connected. The output shaft of the first servo motor is fixedly connected with a first transmission gear. On the other side of the outside of the collection pipeline, a positioning bearing is installed. On the other side of the collection pipeline, a diversion ring is fixedly connected. On the outside of the positioning bearing, a rotating processing pipe is fixedly connected. On the outside of the rotating processing pipe, a transmission tooth ring is fixedly connected. On the inside of the rotating processing pipe, a diversion fan blade is fixedly connected.

[0011] Further, on the other side of the outside of the rotating processing pipe, a guiding plate is fixedly connected. On the inside of the guiding plate, a guiding rod is fixedly connected. On the outside of the guiding rod, a pushing column is installed. On one side of the pushing column, a limiting circular plate is fixedly connected. On the other side of the rotating processing pipe, a pushing circular plate is installed. On the side surface of the pushing circular plate, a pushing arc is provided. On the other side of the pushing column, a second positioning block is fixedly connected. On the outside of the second positioning block, a positioning support rod is fixedly connected. On the side of the positioning support rod away from the second positioning block, a cutting knife is fixedly connected. On the outside of the guiding plate, a positioning circular ring is fixedly connected. On the inside of the rotating processing pipe, a second servo motor is fixedly connected. The output shaft of the second servo motor is fixedly connected with a second transmission gear. On the inside of the pushing circular plate, transmission teeth are fixedly connected.

[0012] Further, a convex sliding groove is provided at the bottom of the sliding plate. The dimension of the convex sliding groove of the sliding plate and the cross-sectional dimension of the guiding slide rail are in clearance fit. The number of the sliding grooves of the sliding plate is the same as the number of the guiding slide rails.

[0013] Further, the teeth on the outer side of the first transmission gear mesh with the teeth on the outer side of the transmission gear ring. An oblique angle is provided on the inner side of the diversion ring. The connection between the pushing circular plate and the rotary processing pipe is connected through a bearing.

[0014] Further, the width of the inner side of the guiding plate is the same as the width of the pushing arc. There is a clearance fit between the width of the pushing arc and the diameter of the pushing column. Positioning holes are provided on the outer side of the pushing column. There is a clearance fit between the diameter of the positioning holes on the outer side of the pushing column and the diameter of the guiding rod. The teeth on the outer side of the second transmission gear mesh with the transmission teeth. The cutting knives are all located on the processing thread.

[0015] Technical effects and advantages of the present invention: 1. During the operation of the present invention, the workpiece to be processed is placed inside the clamping arc plate, and then the clamping arc plate is gathered to clamp the workpiece to be processed. Then, the workpiece clamping assembly slides on the guiding slide rail, so that the workpiece approaches the processing assembly. When the cutting knife moves to the inside of the workpiece, it stops moving. Then, the second servo motor works to drive the second transmission gear to rotate, and then drives the transmission teeth to move, thereby driving the pushing circular plate to rotate. Then, the pushing column is pushed outward through the pushing arc. Then, under the positioning of the limiting circular plate by the guiding rod, the pushing column spreads outward and stops when the cutting knife contacts the inside of the workpiece, enabling the device to process internal threads of different diameters and quickly complete the adjustment of the cutting knife, ensuring the processing speed.

[0016] 2. Since the cutting knives are all located on the thread to be processed in the present invention, the processing efficiency can be guaranteed, so that the device does not need to repeatedly process to remove burrs, ensuring the processing efficiency of the internal thread.

[0017] 3. The first servo motor works to drive the first transmission gear to rotate. Then, through the cooperation of the first transmission gear and the transmission gear ring, the rotary processing pipe is driven to rotate, and then the cutting knife is driven to rotate. During the rotation of the cutting knife, the second servo motor works to move the cutting knife to the specified processing depth. At the same time, the workpiece clamping assembly will approach the processing assembly, thereby completing the processing of the internal thread. At the same time, the second servo motor is driven to rotate to generate a wind force that pulls outward, so that the chips generated by the processing are output from the workpiece under the drive of the air flow and collected by the sliding plate, realizing the effective collection of the processing chips, avoiding the chips from affecting the normal processing of the device, and ensuring the processing quality and efficiency. Description of the drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of a partial structure of the present invention.

[0020] Figure 3 This is a schematic structural diagram of the processing component of the present invention.

[0021] Figure 4 This is a schematic structural diagram of the processing and cutting component of the present invention.

[0022] Figure 5 This is a schematic structural diagram of the other side of the processing and cutting component of the present invention.

[0023] The reference numerals are: 1, positioning platform component; 101, positioning platform main body; 102, positioning support leg; 103, guiding slide rail; 104, square baffle; 2, workpiece clamping component; 201, first positioning column; 202, sliding plate; 203, positioning circular plate; 204, positioning boss; 205, clamping arc plate; 3, processing component; 301, second positioning column; 302, debris collection groove; 303, processing and cutting component; 3031, collection pipe; 3032, first positioning block; 3033, first servo motor; 3034, positioning bearing; 3035, rotating processing pipe; 3036, transmission tooth ring; 3037, guiding plate; 3038, guiding rod; 3039, limiting circular plate; 30310, pushing column; 30311, pushing circular plate; 30312, pushing arc; 30313, positioning ring; 30314, diversion ring; 30315, diversion fan blade; 30316, first transmission gear; 30317, second transmission gear; 30318, second positioning block; 30319, positioning support rod; 30320, cutting tool; 30321, second servo motor; 30322, transmission tooth. Detailed implementation manners

[0024] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures described in the following implementation manners are only examples, and the automatic nut inner hole thread processing device involved in the present invention is not limited to the various structures described in the following implementation manners. All other implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] Referring to Figures 1 to 5 , the present invention provides an automatic nut inner hole thread processing device, including a positioning platform component 1. One side of the top of the positioning platform component 1 is fixedly connected with a workpiece clamping component 2, and the other side of the top of the positioning platform component 1 is provided with a processing component 3. The positioning platform component 1 includes a positioning platform main body 101. Four corners of the bottom of the positioning platform main body 101 are fixedly connected with positioning support legs 102. The other side of the top of the positioning platform main body 101 is fixedly connected with a guiding slide rail 103, and square baffles 104 are fixedly connected to both sides of the guiding slide rail 103.

[0026] In a preferred embodiment, the workpiece clamping assembly 2 includes a first positioning post 201. Sliding plates 202 are fixedly connected to the bottoms of the front and back sides of the first positioning post 201. A positioning circular plate 203 is installed on one side of the first positioning post 201. A clamping arc plate 205 is installed on one side of the positioning circular plate 203. A positioning boss 204 is fixedly connected to one side of the positioning circular plate 203.

[0027] In a preferred embodiment, the processing assembly 3 includes a second positioning post 301. A debris collection groove 302 is installed on one side of the second positioning post 301. A processing and cutting assembly 303 is installed on the side surface of the second positioning post 301; the cutting blades 30320 are all located on the thread to be processed, which can ensure the processing efficiency, so that the equipment does not need to repeatedly process and remove burrs, ensuring the processing efficiency of the internal thread.

[0028] In a preferred embodiment, the processing and cutting assembly 303 includes a collection pipe 3031. A first positioning block 3032 is fixedly connected to the top of the collection pipe 3031. A first servo motor 3033 is fixedly connected to the top of the first positioning block 3032. A first transmission gear 30316 is fixedly connected to the output shaft of the first servo motor 3033. A positioning bearing 3034 is installed on the other side outside the collection pipe 3031. A diversion ring 30314 is fixedly connected to the other side of the collection pipe 3031. A rotating processing pipe 3035 is fixedly connected to the outside of the positioning bearing 3034. A transmission gear ring 3036 is fixedly connected to the outside of the rotating processing pipe 3035. A diversion fan blade 30315 is fixedly connected to the inside of the rotating processing pipe 3035; during the working process, the workpiece to be processed is placed inside the clamping arc plate 205, and then the clamping arc plate 205 is used to gather and clamp the workpiece to be processed. Then, the workpiece clamping assembly 2 slides on the guiding slide rail 103 to make the workpiece approach the processing assembly 3. When the cutting blade 30320 moves to the inside of the workpiece, it stops moving. Then, the second servo motor 30321 works to drive the second transmission gear 30317 to rotate, and then drives the transmission tooth 30322 to move, thereby driving the pushing circular plate 30311 to rotate. Then, the pushing column 30310 is pushed to move outward through the pushing arc 30312. Then, under the positioning of the limiting circular plate 3039 by the guiding rod 3038, the pushing column 30310 spreads outward and stops when the cutting blade 30320 contacts the inside of the workpiece, enabling the equipment to process internal threads of different diameters and quickly complete the adjustment of the cutting blade 30320, ensuring the processing speed.

[0029] In a preferred embodiment, a guide plate 3037 is fixedly connected to the other side outside the rotary processing tube 3035. A guide rod 3038 is fixedly connected to the inner side of the guide plate 3037. A push column 30310 is installed on the outside of the guide rod 3038. A limiting circular plate 3039 is fixedly connected to one side of the push column 30310. A push circular plate 30311 is installed on the other side of the rotary processing tube 3035. A push arc 30312 is formed on the side surface of the push circular plate 30311. A second positioning block 30318 is fixedly connected to the other side of the push column 30310. A positioning support rod 30319 is fixedly connected to the outside of the second positioning block 30318. A cutting tool 30320 is fixedly connected to the side of the positioning support rod 30319 away from the second positioning block 30318. A positioning ring 30313 is fixedly connected to the outside of the guide plate 3037. A second servo motor 30321 is fixedly connected to the inside of the rotary processing tube 3035. A second transmission gear 30317 is fixedly connected to the output shaft of the second servo motor 30321. A transmission tooth 30322 is fixedly connected to the inside of the push circular plate 30311. When the first servo motor 3033 works to drive the first transmission gear 30316 to rotate, then through the cooperation of the first transmission gear 30316 and the transmission tooth ring 3036, the rotary processing tube 3035 is driven to rotate, and then the cutting tool 30320 is driven to rotate. During the rotation of the cutting tool 30320, the second servo motor 30321 works to move the cutting tool 30320 to a specified processing depth. At the same time, the workpiece clamping assembly 2 will move closer to the processing assembly 3, thus completing the processing of the internal thread. At the same time, the second servo motor 30321 rotates to generate a wind force that pulls outward, so that the chips generated by the processing are output from the workpiece driven by the airflow and are collected by the sliding plate 202, realizing the effective collection of the processing chips, avoiding the chips from affecting the normal processing of the equipment, and ensuring the processing quality and efficiency.

[0030] In a preferred embodiment, a convex sliding groove is formed at the bottom of the sliding plate 202. There is a clearance fit between the size of the convex sliding groove of the sliding plate 202 and the cross-sectional size of the guide sliding rail 103. The number of sliding grooves of the sliding plate 202 is the same as the number of guide sliding rails 103.

[0031] In a preferred embodiment, the teeth on the outside of the first transmission gear 30316 mesh with the teeth on the outside of the transmission tooth ring 3036. An oblique angle is formed on the inner side of the diversion ring 30314. The connection between the push circular plate 30311 and the rotary processing tube 3035 is connected through a bearing.

[0032] In a preferred embodiment, the width inside the guide plate 3037 is the same as the width of the pushing arc 30312. There is a clearance fit between the width of the pushing arc 30312 and the diameter of the pushing column 30310. A positioning hole is provided on the outer side of the pushing column 30310, and there is a clearance fit between the diameter of the positioning hole on the outer side of the pushing column 30310 and the diameter of the guide rod 3038. The teeth on the outer side of the second transmission gear 30317 mesh with the transmission teeth 30322. The cutting knives 30320 are all located on the processed thread line.

[0033] The working principle of the present invention: During the working process, the workpiece to be processed is placed inside the clamping arc plate 205, and then the clamping arc plate 205 is used to gather and clamp the workpiece to be processed. Then, the workpiece clamping assembly 2 slides on the guide rail 103, so that the workpiece approaches the processing assembly 3. When the cutting knife 30320 moves to the inside of the workpiece, the movement stops. Then, the second servo motor 30321 works to drive the second transmission gear 30317 to rotate, which in turn drives the transmission teeth 30322 to move, thereby driving the pushing circular plate 30311 to rotate. Then, the pushing arc 30312 is used to push the pushing column 30310 to move outward. Then, under the positioning of the limiting circular plate 3039 by the guide rod 3038, the pushing column 30310 spreads outward and stops when the cutting knife 30320 contacts the inside of the workpiece, enabling the device to process internal threads of different diameters and quickly complete the adjustment of the cutting knife 30320, ensuring the processing speed. Moreover, since the cutting knives 30320 are all located on the thread line to be processed, the processing efficiency can be guaranteed, so that the device does not need to repeatedly process to remove burrs, ensuring the processing efficiency of the internal thread. The first servo motor 3033 works to drive the first transmission gear 30316 to rotate. Then, through the cooperation of the first transmission gear 30316 and the transmission gear ring 3036, the rotary processing pipe 3035 is driven to rotate, and then the cutting knife 30320 is driven to rotate. During the rotation of the cutting knife 30320, the second servo motor 30321 works to move the cutting knife 30320 to the specified processing depth. At the same time, the workpiece clamping assembly 2 will approach the processing assembly 3, thus completing the processing of the internal thread. At the same time, the rotation of the second servo motor 30321 generates a suction force pulling outward, so that the chips generated by the processing are output from the workpiece driven by the airflow and collected by the sliding plate 202, realizing the effective collection of the processing chips, avoiding the chips from affecting the normal processing of the device, and ensuring the processing quality and efficiency.

[0034] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components, and can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent the relative positional relationship. When the absolute position of the object being described changes, the relative positional relationship may change; Second: In the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic processing device for the internal hole thread of a nut, comprising a positioning platform assembly (1), characterized in that: On one side of the top of the positioning platform component (1), a workpiece clamping component (2) is fixedly connected. On the other side of the top of the positioning platform component (1), a processing component (3) is installed. The positioning platform component (1) includes a positioning platform main body (101). At the four corners of the bottom of the positioning platform main body (101), positioning support legs (102) are fixedly connected. On the other side of the top of the positioning platform main body (101), a guiding slide rail (103) is fixedly connected. Square baffles (104) are fixedly connected to both sides of the guiding slide rail (103).

2. The automatic processing device for the internal hole thread of a nut according to claim 1, wherein: The workpiece clamping component (2) includes a first positioning column (201). Sliding plates (202) are fixedly connected to the bottoms of the front and back of the first positioning column (201). A positioning circular plate (203) is installed on one side of the first positioning column (201). A clamping arc plate (205) is installed on one side of the positioning circular plate (203). A positioning boss (204) is fixedly connected to one side of the positioning circular plate (203).

3. An automatic processing device for the internal hole thread of a nut according to claim 2, characterized in that: The processing component (3) includes a second positioning column (301). A debris collection groove (302) is installed on one side of the second positioning column (301). A processing and cutting component (303) is installed on the side of the second positioning column (301).

4. An automatic processing device for the internal hole thread of a nut according to claim 3, characterized in that: The processing and cutting component (303) includes a collection pipeline (3031). A first positioning block (3032) is fixedly connected to the top of the collection pipeline (3031). A first servo motor (3033) is fixedly connected to the top of the first positioning block (3032). The output shaft of the first servo motor (3033) is fixedly connected to a first transmission gear (30316). A positioning bearing (3034) is installed on the other side of the outside of the collection pipeline (3031). A diversion ring (30314) is fixedly connected to the other side of the collection pipeline (3031). A rotating processing pipe (3035) is fixedly connected to the outside of the positioning bearing (3034). A transmission gear ring (3036) is fixedly connected to the outside of the rotating processing pipe (3035). A diversion fan blade (30315) is fixedly connected to the inside of the rotating processing pipe (3035).

5. The automatic nut inner hole thread processing device according to claim 4, characterized in that: On the other side outside the rotary processing tube (3035), a guide plate (3037) is fixedly connected. Inside the guide plate (3037), a guide rod (3038) is fixedly connected. Outside the guide rod (3038), a push column (30310) is installed. On one side of the push column (30310), a limiting circular plate (3039) is fixedly connected. On the other side of the rotary processing tube (3035), a push circular plate (30311) is installed. On the side surface of the push circular plate (30311), a push arc (30312) is formed. On the other side of the push column (30310), a second positioning block (30318) is fixedly connected. Outside the second positioning block (30318), a positioning support rod (30319) is fixedly connected. On the side of the positioning support rod (30319) away from the second positioning block (30318), a cutting tool (30320) is fixedly connected. Outside the guide plate (3037), a positioning ring (30313) is fixedly connected. Inside the rotary processing tube (3035), a second servo motor (30321) is fixedly connected. The output shaft of the second servo motor (30321) is fixedly connected with a second transmission gear (30317). Inside the push circular plate (30311), transmission teeth (30322) are fixedly connected.

6. The automatic processing device for the internal hole thread of a nut according to claim 5, characterized in that: At the bottom of the sliding plate (202), a convex sliding groove is formed. There is a clearance fit between the size of the convex sliding groove of the sliding plate (202) and the cross-sectional size of the guide slide rail (103). The number of sliding grooves of the sliding plate (202) is the same as the number of guide slide rails (103).

7. An automatic processing device for the internal hole thread of a nut according to claim 5, characterized in that: The teeth outside the first transmission gear (30316) and the teeth outside the transmission gear ring (3036) mesh with each other. Inside the diversion ring (30314), an oblique angle is formed. The connection between the push circular plate (30311) and the rotary processing tube (3035) is through a bearing connection.

8. An automatic processing device for the internal hole thread of a nut according to claim 5, characterized in that: The width inside the guide plate (3037) is the same as the width of the push arc (30312). There is a clearance fit between the width of the push arc (30312) and the diameter of the push column (30310). On the outside of the push column (30310), a positioning hole is formed. There is a clearance fit between the diameter of the positioning hole outside the push column (30310) and the diameter of the guide rod (3038). The teeth outside the second transmission gear (30317) and the transmission teeth (30322) mesh with each other. The cutting tools (30320) are all located on the processing thread.

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