A stainless steel nut flexible thread cutting device

Abstract

This invention discloses a flexible thread cutting device for stainless steel nuts, relating to the field of nut processing technology. This invention significantly improves production efficiency and product stability through automated feeding, processing, and unloading processes. Especially in mass production, it enables continuous and stable processing, reducing the time and cost of manual operation. The use of force-sensitive resistors to monitor the nut's fixing force ensures that the nut is stably clamped during processing, which not only improves the accuracy of thread cutting but also avoids processing errors caused by nut loosening, thus improving the overall product quality. By changing the rotation angle of the feeding drive gear driven by the extrusion rack, the movement distance of the feeding push rod can be controlled, thereby pushing nuts of different sizes onto the nut support block.

Description

Technical Field

[0001] The invention relates to the technical field of nut processing, in particular to a stainless steel nut flexible thread cutting device. Background Art

[0002] At present, in the field of nut thread cutting, nut thread processing equipment can only process one specification of thread and cannot be adjusted according to the nut's external dimensions and specific thread parameters. The use of a lathe to cut threads requires manual cooperation, which will lead to problems with unstable product quality. Traditional thread processing equipment has low flexibility and cannot quickly adapt to the processing needs of nuts of different specifications. Therefore, it is necessary to develop a device that can automatically load and unload materials and can also perform thread cutting processing on nuts of various specifications. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a stainless steel nut flexible thread cutting device, a feeding substrate and a thread cutting substrate, the feeding substrate and the thread cutting substrate are fixed as one, wherein a downward inclined unloading chute is arranged on the thread cutting substrate, a through hole is opened on the thread cutting substrate, a nut support block limiting ring is fixedly installed in the through hole, an electromagnet is fixedly installed on the nut support block limiting ring, the outer diameters of the electromagnet and the nut support block limiting ring are the same, the inner diameter of the nut support block limiting ring is smaller than the inner diameter of the electromagnet, so that a step surface is formed at the connection between the electromagnet and the nut support block limiting ring, a nut support block is overlapped on the step surface, and the inner diameter of the nut support block is larger than the nominal diameter of the threaded hole to be processed; two side extrusion plates are slidably installed on the upper surface of the thread cutting substrate, and a feeding push rod for feeding is arranged at the symmetric plane of the two side extrusion plates; a tap is arranged above the nut support block limiting ring, and the tap is driven by a cutting motor.

[0004] Preferably, extrusion racks are fixedly installed on the two side extrusion plates, and the two extrusion racks are symmetrically arranged about the center center of the nut support block limiting ring. Two extrusion gears are also rotatably installed on the thread cutting base plate, which are symmetrically arranged about the center center of the nut support block limiting ring. The extrusion gears are meshed with the extrusion racks, and each extrusion gear is also fixedly provided with a synchronous toothed disc through a rotating shaft.

[0005] Preferably, the synchronous chainring is located on the lower surface of the thread cutting substrate, and an annular chainring is rotatably provided on the circumferential surface of the nut support block limiting ring, wherein the two synchronous chainrings are connected by a chain transmission, and the chain also cooperates with the annular chainring transmission to reduce the friction between the chain and the nut support block limiting ring.

[0006] Preferably, a feeding drive gear is arranged on the side of one of the extrusion gears, and the feeding drive gear is arranged on the moving path of the corresponding extrusion rack. The feeding drive gear can engage with the extrusion rack. The feeding drive gear is fixed on the input shaft of the second planetary gearbox, and the second planetary gearbox is fixed on the threaded cutting substrate.

[0007] Preferably, a second synchronous gear is fixedly mounted on the output shaft of the second planetary gearbox, a loading toggle gear is rotatably mounted on the upper surface of the loading base plate, a loading push rod is provided with a tooth shape that can mesh with the loading toggle gear, and a protective cover is also provided on the loading push rod for covering the loading toggle gear.

[0008] Preferably, a first synchronous gear is fixedly mounted on the loading toggle gear via a rotating shaft, the first synchronous gear is arranged on the lower surface of the loading substrate, the first synchronous gear and the second synchronous gear are meshed and transmitted via a synchronous rack, and the synchronous rack is slidably mounted on the lower surface of the loading substrate.

[0009] Preferably, the electromagnet is also fixedly mounted on a bow-shaped frame, the bow-shaped frame is fixed on the lower surface of the thread cutting substrate, and a replacement push tube limit plate is also fixedly mounted on the lower surface of the bow-shaped frame.

[0010] Preferably, a replacement push tube is provided inside the electromagnet, and the replacement push tube is used to push the nut support block out of the nut support block limiting ring, wherein the replacement push tube limiting plate is overlapped with the bottom of the replacement push tube, and a feeding drive motor is fixedly installed on the bow frame, and the output shaft of the feeding drive motor is fixed to one of the extrusion gears.

[0011] Preferably, the loading base plate, the unloading chute and the thread cutting base plate are all fixedly mounted on the supporting legs, and a nut loading rack is also fixedly mounted on the loading base plate, and the bottom end face of the nut loading rack is slidingly matched with the loading push rod, the output shaft of the cutting motor is fixed to the input shaft of the first planetary gearbox, the output shaft of the first planetary gearbox is fixed to the tap, the outer shell of the cutting motor is fixed to the outer shell of the first planetary gearbox, the cutting motor is fixed on the cutting motor bracket, and the cutting motor bracket is slidably mounted on four downward pressing slide bars, and a downward pressing electric cylinder support plate is fixed on the top end of the four downward pressing slide bars, and a downward pressing electric cylinder is fixedly mounted on the downward pressing electric cylinder support plate, and the telescopic rod of the downward pressing electric cylinder is fixed to the cutting motor bracket.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention greatly improves production efficiency and product stability through automated loading, processing and unloading processes, especially in mass production, it can continuously and stably perform processing, reducing the time and cost of manual operation; (2) The present invention uses a force-sensitive resistor to monitor the fixing force of the nut to ensure that the nut can be stably clamped during the processing, which not only improves the accuracy of thread processing, but also avoids processing errors caused by nut loosening, thereby improving the overall quality of the product; (3) The present invention can control the moving distance of the loading push rod by changing the rotation angle of the loading drive gear driven by the extrusion rack, thereby pushing nuts of different external sizes onto the nut support block. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the unloading chute of the present invention.

[0014] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 3 It is a schematic diagram of the structure of the feeding push rod of the present invention.

[0016] Figure 4 This is a structural schematic diagram of replacing the push tube limit plate of the present invention.

[0017] Figure 5 It is a schematic diagram of the structure of the nut support block of the present invention.

[0018] Figure 6 This is a diagram of the power transmission path coordination of the present invention.

[0019] In the figure: 101-feeding base plate; 102-supporting leg; 103-unloading chute; 104-thread cutting base plate; 105-pressing slide bar; 106-cutting motor bracket; 107-pressing electric cylinder support plate; 108-pressing electric cylinder; 109-cutting motor; 110-nut feeding rack; 111-first planetary gearbox; 112-tap; 113-feeding push rod; 114-protective cover; 115-bow frame; 116-side extrusion plate; 117-extrusion rack ;118-extrusion gear;119-feeding drive gear;120-feeding toggle gear;121-replace the push tube limit plate;122-replace the push tube;123-electromagnet;124-nut support block limit ring;125-nut support block;126-feeding drive motor;127-synchronous rack;128-first synchronous gear;129-second planetary gearbox;130-second synchronous gear;131-chain;132-synchronous toothed disc;133-annular toothed disc. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-6, and further illustrate the technical solution of the present invention through specific implementation methods.

[0021] The present invention provides a stainless steel nut flexible thread cutting device, comprising a feeding substrate 101 and a thread cutting substrate 104, wherein the feeding substrate 101 and the thread cutting substrate 104 are fixed as one body, wherein a downwardly inclined unloading chute 103 is arranged on the thread cutting substrate 104, a through hole is opened on the thread cutting substrate 104, a nut support block limiting ring 124 is fixedly installed in the through hole, an electromagnet 123 is fixedly installed on the nut support block limiting ring 124, the outer diameters of the electromagnet 123 and the nut support block limiting ring 124 are the same, and the inner diameter of the nut support block limiting ring 124 is The diameter is smaller than the inner diameter of the electromagnet 123, so that a step surface is formed at the connection between the electromagnet 123 and the nut support block limiting ring 124, and a nut support block 125 is overlapped on the step surface, and the inner diameter of the nut support block 125 is larger than the nominal diameter of the threaded hole to be processed; two side extrusion plates 116 are slidably installed on the upper surface of the thread cutting base plate 104, and a loading push rod 113 for loading is arranged at the symmetry plane of the two side extrusion plates 116; a tap 112 is arranged above the nut support block limiting ring 124, and the tap 112 is driven by the cutting motor 109. Extrusion racks 117 are fixedly mounted on the two side extrusion plates 116. The two extrusion racks 117 are symmetrically arranged about the center of the circle of the nut support block limiting ring 124. Two extrusion gears 118 symmetrically arranged about the center of the circle of the nut support block limiting ring 124 are also rotatably mounted on the thread cutting base plate 104. The extrusion gears 118 are meshed with the extrusion racks 117. Each extrusion gear 118 is also fixedly equipped with a synchronous toothed disc 132 through a rotating shaft. The synchronous toothed disc 132 is located on the lower surface of the thread cutting base plate 104. An annular toothed disc 133 is rotatably arranged on the circumferential surface of the nut support block limiting ring 124. The two synchronous toothed discs 132 are connected by a chain 131 for transmission. The chain 131 is also matched with the annular toothed disc 133 for transmission, so as to reduce the friction between the chain 131 and the nut support block limiting ring 124. A feeding drive gear 119 is arranged on the side of one of the extrusion gears 118. The feeding drive gear 119 is arranged on the moving path of the corresponding extrusion rack 117. The feeding drive gear 119 can mesh with the extrusion rack 117. The feeding drive gear 119 is fixed on the input shaft of the second planetary gearbox 129. The second planetary gearbox 129 is fixed on the thread cutting substrate 104. A second synchronous gear 130 is fixedly mounted on the output shaft of the second planetary gearbox 129. A feeding toggle gear 120 is rotatably mounted on the upper surface of the feeding substrate 101. A tooth shape that can mesh with the feeding toggle gear 120 is arranged on the feeding push rod 113. A protective cover 114 is also arranged on the feeding push rod 113 to cover the feeding toggle gear 120.The first synchronous gear 128 is fixedly mounted on the feeding toggle gear 120 through a rotating shaft. The first synchronous gear 128 is arranged on the lower surface of the feeding substrate 101. The first synchronous gear 128 and the second synchronous gear 130 are meshed and transmitted through a synchronous rack 127. The synchronous rack 127 is slidably mounted on the lower surface of the feeding substrate 101. The electromagnet 123 is also fixedly mounted on the arch frame 115. The arch frame 115 is fixed on the lower surface of the thread cutting substrate 104. A replacement push tube limiter 121 is also fixedly mounted on the lower surface of the arch frame 115. A replacement push tube 122 is arranged inside the electromagnet 123. The replacement push tube 122 is used to push the nut support block 125 out of the nut support block limiter ring 124. The replacement push tube limiter 121 is overlapped with the bottom of the replacement push tube 122. A feeding drive motor 126 is fixedly mounted on the arch frame 115. The output shaft of the feeding drive motor 126 is fixed to one of the extrusion gears 118. The loading base plate 101, the unloading chute 103 and the thread cutting base plate 104 are all fixedly mounted on the supporting leg 102. A nut loading rack 110 is also fixedly mounted on the loading base plate 101. The bottom end surface of the nut loading rack 110 slides with the loading push rod 113. The output shaft of the cutting motor 109 is fixed to the input shaft of the first planetary gearbox 111. The output shaft of the first planetary gearbox 111 is fixed to the tap 112. The outer shell of the cutting motor 109 is fixed to the outer shell of the first planetary gearbox 111. The cutting motor 109 is fixed on the cutting motor bracket 106. The cutting motor bracket 106 is slidably mounted on four downward pressing slide bars 105. A downward pressing electric cylinder support plate 107 is fixed to the top of the four downward pressing slide bars 105. A downward pressing electric cylinder 108 is fixedly mounted on the downward pressing electric cylinder support plate 107. The telescopic rod of the downward pressing electric cylinder 108 is fixed to the cutting motor bracket 106.

[0022] The working principle of a stainless steel nut flexible thread cutting device disclosed in the present invention is as follows: the nuts that need to be processed with threaded holes are stacked in a nut loading rack 110, and the nut loading rack 110 is replaced according to the size of the nut. The nut loading rack 110 is replaceable, and similarly, the nut support block 125 is also replaceable and can be replaced according to the nominal diameter of the threaded hole that needs to be processed. The feeding drive motor 126 is controlled, and the output shaft of the feeding drive motor 126 drives the extrusion gear 118 to rotate, and the extrusion gear 118 drives the extrusion rack 117 to move linearly, and at the same time, the synchronous toothed disc 132, the chain 131, the synchronous toothed disc 132, and the extrusion gear 118 drive another extrusion rack 117 to move linearly, and the two extrusion racks 117 will drive the corresponding side extrusion plates 116 to move relative to each other. At this time, the two side extrusion plates 116 move in the opposite direction, so that the extrusion rack 117 is in contact and meshed with the feeding drive gear 119, thereby driving the feeding drive gear 119 to rotate, and the feeding drive gear 119 drives the input shaft of the second planetary gearbox 129 to rotate, and the output shaft of the second planetary gearbox 129 drives the second synchronous gear 130 to rotate, and the second synchronous gear 130 drives the first synchronous gear 116 through the synchronous rack 127. 28 rotates, the first synchronous gear 128 drives the feeding toggle gear 120 to rotate, and the feeding toggle gear 120 drives the feeding push rod 113 to move linearly, at this time, it will push the lowest nut inside the nut feeding rack 110 to move, and push the nut onto the nut support block 125, and then start the feeding drive motor 126 in the reverse direction, and the output shaft of the feeding drive motor 126 drives the two side squeezing plates 116 to approach each other. At this time, the squeezing rack 117 will also drive the feeding drive gear 119 to rotate in the opposite direction, thereby driving the feeding push rod 113 to move to the initial position (to facilitate pushing the next nut onto the nut support block 125), and the two side squeezing plates 116 approach to squeeze the two sides of the nut, so as to fix the nut, and then start the electromagnet 123 again, the electromagnet 123 generates magnetic force to attract the nut support block 125 and the nut to fix them.

[0023] Then the cutting motor 109 is started, the cutting motor 109 drives the tap 112 to rotate, and the lower pressure cylinder 108 is started at the same time, the telescopic rod of the lower pressure cylinder 108 drives the cutting motor bracket 106 to move vertically, and drives the cutting motor 109 to move vertically, at this time the tap 112 will continue to approach the nut, and the nut will be threaded, and then the lower pressure cylinder 108 will be controlled to lift the tap 112. The electromagnet 123 is powered off, and the feeding drive motor 126 is controlled to push the next nut onto the nut support block 125. At this time, the nut on the nut support block 125 that has been processed with threads will be pushed to the unloading chute 103 by the next nut, and then slide to the specified position.

[0024] The user can replace the tap 112, the nut support block 125 and the nut loading rack 110 according to the size of the nut to be processed. A triangular groove is provided at the position where the loading push rod 113 contacts the nut, and the angle of the groove surface is the same as the angle between two surfaces of the outer surface of the nut. The nut support block 125 can be lifted up by replacing the push tube 122, so that the nut support block 125 can be easily removed from the nut support block limiting ring 124. A force-sensitive resistor is provided at the position where the nut support block 125 contacts the step surface of the electromagnet 123 and the nut support block limiting ring 124, and a force-sensitive resistor is provided between the side extrusion plate 116 and the nut contact surface, which is used to monitor the fixing force on the nut and monitor whether the nut is stably clamped, and use it as a condition for starting the cutting motor 109.

Claims

1. A stainless steel nut flexible thread cutting device, characterized in that: A feeding substrate (101) and a thread cutting substrate (104), wherein the feeding substrate (101) and the thread cutting substrate (104) are fixed as one body, wherein a downwardly inclined unloading chute (103) is provided on the thread cutting substrate (104), a through hole is opened on the thread cutting substrate (104), a nut support block limiting ring (124) is fixedly installed in the through hole, an electromagnet (123) is fixedly installed on the nut support block limiting ring (124), and the outer diameters of the electromagnet (123) and the nut support block limiting ring (124) are the same , the inner diameter of the nut support block limiting ring (124) is smaller than the inner diameter of the electromagnet (123), so that a step surface is formed at the connection between the electromagnet (123) and the nut support block limiting ring (124), and a nut support block (125) is overlapped on the step surface, and the inner diameter of the nut support block (125) is larger than the nominal diameter of the threaded hole to be processed, and a replacement push tube (122) is provided inside the electromagnet (123), and the replacement push tube (122) is used to push the nut support block (125) out of the nut support block limiting ring (124); Two side extrusion plates (116) are slidably mounted on the upper surface of the thread cutting base plate (104), and a loading push rod (113) for loading materials is arranged at the symmetric planes of the two side extrusion plates (116); A tap (112) is arranged above the nut support block limiting ring (124), and the tap (112) is driven by a cutting motor (109).

2. A stainless steel nut flexible thread cutting device according to claim 1, characterized in that: An extrusion rack (117) is fixedly mounted on each of the two side extrusion plates (116), and the two extrusion racks (117) are symmetrically arranged about the center of a nut support block limiting ring (124). Two extrusion gears (118) are symmetrically arranged about the center of a nut support block limiting ring (124) and are rotatably mounted on the thread cutting base plate (104). The extrusion gears (118) are meshed with the extrusion racks (117), and each extrusion gear (118) is fixedly provided with a synchronous toothed disc (132) via a rotating shaft.

3. A stainless steel nut flexible thread cutting device according to claim 2, characterized in that: The synchronous toothed disc (132) is located on the lower surface of the thread cutting base plate (104), and an annular toothed disc (133) is rotatably arranged on the circumferential surface of the nut support block limiting ring (124), wherein the two synchronous toothed discs (132) are connected by a chain (131) for transmission, and the chain (131) is also in transmission cooperation with the annular toothed disc (133) for reducing the friction between the chain (131) and the nut support block limiting ring (124).

4. A stainless steel nut flexible thread cutting device according to claim 3, characterized in that: A feeding drive gear (119) is arranged on the side of one of the extrusion gears (118); the feeding drive gear (119) is arranged on the moving path of the corresponding extrusion rack (117); the feeding drive gear (119) can mesh with the extrusion rack (117); the feeding drive gear (119) is fixed on the input shaft of the second planetary gearbox (129); and the second planetary gearbox (129) is fixed on the thread cutting base plate (104).

5. A stainless steel nut flexible thread cutting device according to claim 4, characterized in that: A second synchronous gear (130) is fixedly mounted on the output shaft of the second planetary gearbox (129); a loading toggle gear (120) is rotatably mounted on the upper surface of the loading base plate (101); a tooth profile capable of meshing with the loading toggle gear (120) is provided on the loading push rod (113); and a protective cover (114) is also provided on the loading push rod (113) for shielding the loading toggle gear (120).

6. A stainless steel nut flexible thread cutting device according to claim 5, characterized in that: A first synchronous gear (128) is fixedly mounted on the loading toggle gear (120) via a rotating shaft. The first synchronous gear (128) is arranged on the lower surface of the loading base plate (101). The first synchronous gear (128) and the second synchronous gear (130) are meshed and transmitted via a synchronous rack (127). The synchronous rack (127) is slidably mounted on the lower surface of the loading base plate (101).

7. A stainless steel nut flexible thread cutting device according to claim 6, characterized in that: The electromagnet (123) is also fixedly mounted on the bow frame (115), the bow frame (115) is fixed on the lower surface of the thread cutting base plate (104), a replacement push tube limit plate (121) is also fixedly mounted on the lower surface of the bow frame (115), wherein the replacement push tube limit plate (121) is overlapped with the bottom of the replacement push tube (122), and a feeding drive motor (126) is fixedly mounted on the bow frame (115), and an output shaft of the feeding drive motor (126) is fixed to one of the extrusion gears (118).

8. The stainless steel nut flexible thread cutting device according to claim 7, characterized in that: The feeding substrate (101), the unloading chute (103) and the thread cutting substrate (104) are all fixedly mounted on the support leg (102). A nut feeding rack (110) is also fixedly mounted on the feeding substrate (101). The bottom end surface of the nut feeding rack (110) is slidably matched with the feeding push rod (113). The output shaft of the cutting motor (109) is fixed to the input shaft of the first planetary gearbox (111). The output shaft of the first planetary gearbox (111) is fixed to the tap (112). The housing of the machine (109) is fixed to the housing of the first planetary gearbox (111); the cutting motor (109) is fixed to the cutting motor bracket (106); the cutting motor bracket (106) is slidably mounted on four downward pressing slide bars (105); a downward pressing electric cylinder support plate (107) is fixed to the top of the four downward pressing slide bars (105); a downward pressing electric cylinder (108) is fixedly mounted on the downward pressing electric cylinder support plate (107); and a telescopic rod of the downward pressing electric cylinder (108) is fixed to the cutting motor bracket (106).

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