A metal raw material cutting device for processing high wear-resistant fasteners

Abstract

This invention relates to the field of arc cutting equipment technology, specifically to a metal raw material cutting equipment for processing high wear-resistant fasteners. The equipment includes a frame, with a placement rack fixedly installed at the upper end of the frame; a mounting rack is provided at the upper end of the frame, and an arc cutting assembly is fixedly installed at the lower end of the mounting rack; a second telescopic rod is fixedly installed at the bottom end of the frame, and a sliding groove cylinder is fixedly installed at the bottom end of the frame, with the first telescopic rod slidably connected within the groove of the sliding groove cylinder. This invention discloses an integrated intelligent manufacturing equipment for processing high wear-resistant fastener blanks, integrating automatic arc cutting equipment, synchronous graded nitrogen cooling and slag recasting layer scraping mechanism, synchronously treating the heat-affected zone of the cut, supporting straight cutting, oblique cutting, and V-shaped cuts, adapting to the workpiece surface thickness, effectively eliminating cutting cracks and hardening defects, and suitable for large-scale continuous automated blanking production.

Description

Technical Field

[0001] This invention relates to the field of arc cutting equipment technology, specifically to a metal raw material cutting equipment for processing high wear-resistant fasteners. Background Technology

[0002] Driven by the rapid development of the intelligent manufacturing equipment industry, the manufacturing precision and service performance requirements of basic components are continuously increasing. High-wear-resistant fasteners, as key connecting parts in major equipment such as mining machinery, heavy-duty engineering vehicles, and rail transportation, have their blank preparation quality directly determining the fatigue life and reliability of the final product. To meet the demand for efficient and continuous cutting of high-hardness, high-wear-resistant alloy steel wire rods or bars, modern fastener production lines have maturely adopted automatic arc cutting equipment as a commonly used fixed-length cutting method. This type of automatic arc cutting equipment utilizes an electric arc heat source to locally melt the metal and simultaneously uses a high-pressure airflow to blow away the molten material. Theoretically, it is not limited by material hardness and has significant advantages such as high cutting efficiency and extremely low tool consumption. It is a commonly used key equipment in intelligent manufacturing production lines for achieving flexible raw material cutting.

[0003] However, when faced with typical wear-resistant steels with high carbon equivalent and multi-element alloys (such as high-manganese steel and wear-resistant alloy steels containing chromium and molybdenum), existing automatic arc cutting equipment still exposes a series of unavoidable process defects. At the moment of cutting, the surface metal undergoes rapid melting and intense thermal cycling, inevitably forming a recast layer rich in as-cast structure, oxide slag, and embedded with numerous microcracks. The heat-affected zone immediately beneath this recast layer is prone to hardening due to rapid cooling, forming a brittle martensitic layer and potentially inducing cold cracks. These surface defects become crack initiation sources during subsequent cold heading or forging, not only causing the billet to crack and become unusable but also rapidly wearing down precision molds. Although the industry has attempted to spray cooling media into the cutting zone to control the degree of hardening, simple forced cooling methods cannot eliminate the already formed recast layer and microcracks, resulting in the surface integrity of the cut end face falling far short of the quality requirements for direct entry into subsequent plastic forming. Summary of the Invention

[0004] The purpose of this invention is to provide a metal material cutting device for processing high wear-resistant fasteners, so as to solve the problem that the simple forced cooling method mentioned in the background art cannot eliminate the already formed recast layer and microcracks.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal raw material cutting device for processing high wear-resistant fasteners, comprising a frame, wherein a placement frame is fixedly installed at the upper end of the frame; a mounting frame is provided at the upper end of the frame, and an arc cutting assembly is fixedly installed at the lower end of the mounting frame; a telescopic rod two is fixedly installed at the bottom end of the frame, and a sliding groove cylinder is fixedly installed at the bottom end of the frame, wherein a telescopic rod one is slidably connected in the groove of the sliding groove cylinder; a mounting plate is provided at the upper end of the frame, and multiple sets of retraction rods slide through the mounting plate, wherein the ends of the two sets of retraction rods located at the upper end are fixed. The upper plate is connected to a lower plate, and the ends of the two sets of retraction rods at the lower end are fixedly connected to the lower plate. A processing chamber is opened in the middle of the upper plate, and a horizontal scraper is fixedly connected to the side wall of the processing chamber. One end of the upper plate is set as a slanted baffle, and a lifting plate is provided at the upper end of the upper plate. A spray outlet is opened on the inner wall of the processing chamber, and a flow collecting flat pipe is fixedly connected to the inner wall of the processing chamber. The opening of the flow collecting flat pipe faces downward, and a spray pipe is connected to the side end of the flow collecting flat pipe. Two sets of symmetrically arranged vertical scrapers are provided at the upper end of the lower plate. The upper plate and the lower plate are fixedly connected by a U-shaped connector.

[0006] Furthermore, a drive unit is fixedly installed at the upper end of the frame, a lead screw is fixedly connected to the output end of the drive unit, a threaded block is threadedly connected to the body of the lead screw, a guide rod is fixedly connected to the upper end of the frame, and a slider is slidably connected to the body of the guide rod.

[0007] Furthermore, a side plate is fixedly connected to the upper end of the frame, an auxiliary rod is fixedly installed on the side plate, a connecting plate is fixedly connected to the upper end of the slider one, the other end of the connecting plate is slidably connected to the auxiliary rod, a driving part two is fixedly installed at the bottom end of the connecting plate, a lead screw two is fixedly connected to the output end of the driving part two, a threaded block two is threadedly connected to the body of the lead screw two, a guide rod two is fixedly connected to the bottom end of the connecting plate, a slider two is slidably connected to the body of the guide rod two, the slider two is fixedly connected to the threaded block two, and the mounting bracket is fixedly connected to the bottom end of the slider two.

[0008] Furthermore, the frame is provided with a push rod for pushing the raw material to be processed, and a spring is fixedly connected between the inner wall of the groove cylinder and the top end of the telescopic rod.

[0009] Furthermore, a cylinder is fixedly installed at the upper end of the frame, and a connecting rod is fixedly connected to the output end of the cylinder. A rotating block is fixedly connected to the end of the connecting rod away from the cylinder. The rotating block consists of a rotating body and a receiving groove and an irregular groove opened in the rotating body. The receiving groove and the irregular groove are connected, and the receiving groove is located below the irregular groove.

[0010] Furthermore, a rotating base is fixedly connected to one end of the mounting plate near the cylinder. The rotating base consists of an I-shaped rotating body and a square groove at the bottom of the I-shaped rotating body. The rotating block is rotatably connected to the upper end of the rotating base. A rod is movably inserted into the rotating block and the interior of the rotating base. The rod consists of an irregular block, a rod body, and a square block from top to bottom. A spring is provided between the bottom surface of the irregular block and the bottom wall of the receiving groove. The spring is sleeved on the rod body.

[0011] Furthermore, spring 2 is fixedly connected between the mounting plate and the upper plate and the lower plate, and spring 2 is sleeved on the rod body of the retraction rod.

[0012] Furthermore, a drive unit three is fixedly installed on the upper end of the lower plate, the vertical scraper is fixedly connected to the output end of the drive unit three, and a fixing block is fixedly connected to the side end of the upper plate.

[0013] Furthermore, an input pipe assembly is fixedly installed at the upper end of the upper plate. The input pipe assembly is connected to the nozzle and the collecting flat pipe respectively. A diverter block is fixedly connected inside the collecting flat pipe.

[0014] Furthermore, the lifting plate is composed of a plate body and a pressure block. A side groove is provided in the upper plate. The pressure block is slidably connected in the groove of the side groove. A spring is fixedly connected between the bottom wall of the side groove and the bottom surface of the pressure block. The end of the plate body facing the arc cutting assembly is set as an arc-shaped surface.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This high wear-resistant fastener processing metal raw material cutting equipment integrates automatic arc cutting equipment and post-cooling scraping unit through integrated intelligent manufacturing equipment. The cutting process simultaneously completes graded nitrogen cooling and bidirectional scraping of the plane and kerf, removing the recast layer and hardened heat-affected zone of the cut in one go. This solves the pain points of traditional cutting equipment that only cuts without repair and the billet is prone to cracking and scrapping, thereby improving the qualification rate of fastener billet finished products.

[0016] 2. This high wear-resistant fastener processing metal raw material cutting equipment has the ability to perform flat cutting, oblique cutting, and V-shaped cutting in multiple modes. Relying on the unlockable rotating base, adaptive spring buffer structure, and piezoelectric micro-adjustment scraper, it can adapt to various specifications of raw materials. Automated feeding and unloading do not require manual intervention, which extends the continuous processing time of intelligent manufacturing equipment and reduces the frequency of equipment downtime maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 For the present invention Figure 2 Enlarged structural diagram of section A; Figure 4 This is a cross-sectional view of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram of section B; Figure 6 For the present invention Figure 4 Enlarged structural diagram of section C; Figure 7 For the present invention Figure 4 Enlarged structural diagram of section D in the middle; Figure 8 This is a schematic diagram of the upper plate structure in this invention; Figure 9 This is a schematic diagram of the upper and lower plate structures in this invention; Figure 10 This is an exploded view of the present invention; Figure 11 This is a schematic diagram of the internal structure of the flow collecting flat tube in this invention.

[0018] In the attached diagram, the components represented by each number are as follows: 1. Frame; 2. Drive Unit 1; 3. Lead Screw 1; 4. Threaded Block 1; 5. Guide Rod 1; 6. Slider 1; 7. Connecting Plate; 8. Drive Unit 2; 9. Lead Screw 2; 10. Threaded Block 2; 11. Guide Rod 2; 12. Slider 2; 13. Arc Cutting Assembly; 14. Mounting Frame; 15. Side Plate; 16. Auxiliary Rod; 17. Placement Frame; 18. Push Rod; 19. Cylinder; 20. Upper Plate; 2001. Processing Chamber; 2002. Inclined Baffle; 2003. Horizontal Scraper; 21. Mounting Plate; 22. Slide Cylinder; 2201. Spring 1; 23. Telescopic Rod 1; 24. Telescopic Rod 2; 25. Lower Plate; 26. Drive Unit 3; 27. Vertical Scraper; 28. 1. Retraction rod; 29. ​​Spring 2; 30. U-shaped connector; 31. Connecting rod; 32. Rotating base; 3201. Square groove; 3202. I-shaped rotating body; 33. Rotating block; 3301. Rotating body; 3302. Receiving groove; 3303. Irregular groove; 34. Fixing block; 35. Lifting plate; 3501. Plate body; 3502. Pressure block; 3503. Spring 3; 36. Side groove; 37. Spray outlet; 38. Spray pipe; 39. Input pipe assembly; 40. Collecting flat pipe; 4001. Diverting block; 41. Arc surface; 42. Insert rod; 4201. Rod body; 4202. Square block; 4203. Irregular block; 43. Spring 4. Detailed Implementation

[0019] 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 embodiments of the present invention, and not all embodiments. Based on the 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.

[0020] This invention provides a technical solution: such as Figure 1 - Figure 11 The metal raw material cutting equipment for processing high wear-resistant fasteners shown includes a frame 1, with a placement rack 17 fixedly installed at the upper end of the frame 1; a mounting rack 14 is provided at the upper end of the frame 1, and an arc cutting assembly 13 is fixedly installed at the lower end of the mounting rack 14; a telescopic rod 24 is fixedly installed at the bottom end of the frame 1, and a sliding groove cylinder 22 is fixedly installed at the bottom end of the frame 1, with a telescopic rod 23 slidably connected in the groove of the sliding groove cylinder 22; a mounting plate 21 is provided at the upper end of the frame 1, and multiple sets of retraction rods 28 slide through the mounting plate 21, with an upper plate 20 fixedly connected to the ends of the two sets of retraction rods 28 at the upper end, and the two sets of retraction rods 28 at the lower end... The upper plate 20 is fixedly connected to the end of the lower plate 25; the middle part of the upper plate 20 is provided with a processing chamber 2001, and a horizontal scraper 2003 is fixedly connected to the side wall of the processing chamber 2001. One end of the upper plate 20 is provided with a slanted baffle 2002. The upper end of the upper plate 20 is provided with a lifting plate 35. The inner wall of the processing chamber 2001 is provided with a spray outlet 37. The inner wall of the processing chamber 2001 is fixedly connected with a flow collecting flat pipe 40. The opening of the flow collecting flat pipe 40 faces downward. The side end of the flow collecting flat pipe 40 is connected with a spray pipe 38; the upper end of the lower plate 25 is provided with two sets of symmetrically arranged vertical scrapers 27; the upper plate 20 and the lower plate 25 are fixedly connected by a U-shaped connector 30.

[0021] In this invention, frame 1 serves as the overall support base for the entire intelligent manufacturing equipment for processing high wear-resistant fastener blanks. The core execution unit of this device is the arc cutting component 13, which is an integrated automatic arc cutting device. The entire machine integrates all structures for cutting, cooling, scraping off cut defects, angle adjustment, and automatic feeding onto frame 1, eliminating the need for multiple independent devices operating in sections. The placement rack 17 is used to stack high wear-resistant alloy steel bars waiting to be cut. An industrial robotic arm can be attached to the outside of the equipment, relying on the robotic arm to complete the loading of raw materials and the unloading of finished products after cutting. The entire process eliminates the need for manual handling of workpieces, meeting the requirements of unmanned continuous production in intelligent manufacturing equipment. Both drive units 1 and 2 use servo motors, which, together with lead screws and guide rods, form a dual-axis translation structure, specifically driving the mounting frame 14 and the arc cutting component 13 to move freely. This allows the automatic arc cutting equipment to accurately reach any cutting point, enabling both straight cutting of pipes and bars and tilting to cut bevels and V-shaped bevels.

[0022] The mounting plate 21, upper plate 20, and lower plate 25 form a cutting-synchronous post-processing mechanism. The entire mechanism can move synchronously with the arc cutting component 13, completing low-temperature cooling and recast layer removal the instant the heat-affected zone is generated during cutting. This overcomes the shortcoming of conventional automatic arc cutting equipment on the market, which only handles cutting and cannot simultaneously process cut defects. The sliding cylinder 22 and telescopic rod 23, together with the internal spring 2201, provide stroke buffering. When the entire cooling and scraping mechanism moves a long distance with the cutting head, the spring can absorb vibration and reduce wear and tear on the precision scrapers and pipeline components inside the intelligent manufacturing equipment. The cylinder 19, connecting rod 31, rotating block 33, rotating base 32, and insert rod 42 form an angle locking structure. During straight cutting, the rotating block 33 is locked to prevent the mechanism from shaking. When switching to oblique cutting or V-shaped cutting, the block is unlocked, allowing the entire processing mechanism to rotate synchronously with the cutting tilt angle.

[0023] The processing chamber 2001 inside the upper plate 20 is an integrated closed chamber for cooling and scraping. The input pipe assembly 39 is connected to a low-temperature nitrogen gas source. After the gas is split, it is cooled in stages through the nozzle 37, the collector flat pipe 40, and the spray pipe 38 to cool the cut and surrounding heat-affected zone in different areas (the nozzle 37 provides initial cooling, and the collector flat pipe 40 provides further cooling to avoid rapid cooling). The horizontal scraper 2003 and the vertical scraper 27 are used to clean the slag and brittle recast layer attached to the cut plane and the inner wall of the cut. The arc-shaped surface 41 at the front end of the lifting plate 35 is used to smoothly glide over the uneven oxide scale on the workpiece surface. The pressure block 3502, together with the spring 3503, adapts to changes in surface thickness to prevent the scraper from getting stuck and damaging the qualified base material. The drive unit 3 26 uses a miniature fully enclosed ball screw servo slide module, which can adjust the left and right position of the vertical scraper 27 in real time to adapt to different cutting widths. Spring 29 is sleeved on the outside of the retraction rod 28. When the telescopic rod 24 pulls the upper plate 20 and lower plate 25 away from the mounting plate 21, the spring is stretched. After processing, the spring rebounds and drives the entire mechanism to automatically reset, ensuring the stable operation of the intelligent manufacturing equipment in a cyclical manner.

[0024] refer to Figure 1 - Figure 11A drive unit 2 is fixedly installed at the upper end of frame 1. A lead screw 3 is fixedly connected to the output end of drive unit 2. A threaded block 4 is threadedly connected to the body of lead screw 3. A guide rod 5 is fixedly connected to the upper end of frame 1. A slider 6 is slidably connected to the body of guide rod 5. A side plate 15 is fixedly connected to the upper end of frame 1. An auxiliary rod 16 is fixedly installed on the body of side plate 15. A connecting plate 7 is fixedly connected to the upper end of slider 6. The other end of connecting plate 7 is slidably connected to auxiliary rod 16. A drive unit 8 is fixedly installed at the bottom end of connecting plate 7. A lead screw 9 is fixedly connected to the output end of drive unit 8. A threaded block 10 is threadedly connected to the body of lead screw 9. A guide rod 11 is fixedly connected to the bottom end of connecting plate 7. A slider 12 is slidably connected to the body, and slider 12 is fixedly connected to threaded block 10. Mounting bracket 14 is fixedly connected to the bottom end of slider 12. A push rod 18 for pushing the raw material to be processed is provided on the frame 1. A spring 2201 is fixedly connected between the inner wall of the groove cylinder 22 and the top end of telescopic rod 23. A cylinder 19 is fixedly installed at the upper end of the frame 1. A connecting rod 31 is fixedly connected to the output end of the cylinder 19. A rotating block 33 is fixedly connected to the end of the connecting rod 31 away from the cylinder 19. The rotating block 33 consists of a rotating body 3301 and a receiving groove 3302 and a shaped groove 3303 opened in the rotating body 3301. The receiving groove 3302 and the shaped groove 3303 are connected and the receiving groove 3302 is placed in the shaped groove 3303. Below; a rotating base 32 is fixedly connected to one end of the mounting plate 21 near the cylinder 19. The rotating base 32 consists of an I-shaped rotating body 3202 and a square groove 3201 opened at the bottom of the I-shaped rotating body 3202. A rotating block 33 is rotatably connected to the upper end of the rotating base 32. A rod 42 is movably inserted into the rotating block 33 and the interior of the rotating base 32. The rod 42 is composed of a shaped block 4203, a rod body 4201 and a square block 4202 from top to bottom. A spring 43 is provided between the bottom surface of the shaped block 4203 and the bottom wall of the receiving groove 3302. The spring 43 is sleeved on the rod body 4201. A spring 29 is fixedly connected between the mounting plate 21 and the upper plate 20 and the lower plate 25. The spring 29 is sleeved on the retraction rod 2. On the rod of the 8; the upper end of the lower plate 25 is fixedly installed with a drive unit 3 26, and the vertical scraper 27 is fixedly connected to the output end of the drive unit 3 26. The side end of the upper plate 20 is fixedly connected with a fixing block 34; the upper end of the upper plate 20 is fixedly installed with an input pipe assembly 39, which is connected to the spray outlet 37 and the flow collecting flat pipe 40 respectively. The flow collecting flat pipe 40 is fixedly connected with a flow divider block 4001; the lifting plate 35 is composed of a plate body 3501 and a pressure block 3502. The upper plate 20 has a side groove 36, and the pressure block 3502 is slidably connected in the groove of the side groove 36. A spring 3503 is fixedly connected between the bottom wall of the side groove 36 and the bottom surface of the pressure block 3502. The end of the plate body 3501 facing the arc cutting assembly 13 is set as an arc surface 41.

[0025] In this invention, the side plate 15 and the auxiliary rod 16 are used to laterally limit the connecting plate 7, preventing it from shifting left or right and ensuring that the drive unit 2 drives the entire transverse moving mechanism to operate smoothly. The U-shaped connector 30 firmly fixes the upper plate 20 and the lower plate 25 into one piece. When the telescopic rod 24 is pulled, the upper and lower scrapers move synchronously, cleaning the defects on both sides of the cut at the same time, eliminating the need for two processing steps and shortening the processing cycle of a single workpiece in the intelligent manufacturing equipment. The inclined baffle 2002 can push away the protruding waste on the workpiece surface when the upper plate 20 moves forward, preventing the waste from getting stuck inside the processing chamber 2001 and blocking the cooling pipes. The diverter block 4001 evenly disperses the nitrogen inside the collecting flat tube 40, preventing excessive local airflow and insufficient local cooling, and ensuring uniform cooling of the heat-affected zone. The irregular block 4203 and square block 4202 of the insert rod 42 are matched with the internal grooves of the rotating block 33 and the rotating base 32, respectively. After locking, there is no gap. During the flat cutting process, the entire processing mechanism will not experience slight twisting or shaking, ensuring the stability of the cutting size accuracy of the automatic arc cutting equipment.

[0026] Furthermore, the two servo motors, drive unit 1 (2) and drive unit 2 (8), combined with lead screws and guide rods, form a dual-axis translational transmission structure. Their lateral and longitudinal travel strokes are independent, allowing free control of the arc cutting component 13's movement trajectory. This enables both straight-line cutting of metal materials and oblique movement to process bevels and V-shaped cuts, broadening the processing capabilities of this intelligent manufacturing equipment. Traditional single-line automatic arc cutting equipment cannot achieve integrated multi-bevel processing; this device effectively overcomes this limitation. The auxiliary rod 16 and guide rods 1 (5) and 2 (11) provide triple guidance and limiting, ensuring smooth lead screw transmission without jamming and preventing displacement deviation even during long-term continuous operation.

[0027] Furthermore, the extension and retraction of the push rod 18 is independently controlled by the electric push rod inside the frame 1, and the pushing speed can match the traveling speed of the arc cutting component 13. The feeding and cutting actions are fully linked, and there is no need for manual adjustment of the workpiece position. The external robotic arm and the placement rack 17 work together to complete the raw material supply and finished product picking. The entire fastener blank unloading production line does not require manual operation and fully meets the automated production standards of intelligent manufacturing equipment.

[0028] Furthermore, the cylinder 19, connecting rod 31, rotating block 33, rotating base 32, and insert rod 42 form a switchable angle locking mechanism. Under normal conditions, spring 43 presses the insert rod 42 downwards, the irregular block 4203 is inserted into the irregular groove 3303, the square block 4202 is inserted into the square groove 3201, and the rotating block 33 is completely locked and cannot rotate. When the telescopic rod 23 pushes the insert rod 42 downwards, it can compress the spring 43 and release the lock. When switching to the oblique cutting mode, the rotating block 33 can rotate freely with the processing angle. There is no need to disassemble parts when switching between the two modes, which simplifies the production changeover operation process of intelligent manufacturing equipment.

[0029] Furthermore, the input pipe assembly 39 is connected to a low-temperature nitrogen gas source, and the internal flow divider 4001 evenly distributes the airflow to achieve staged cooling: the nozzle 37 sprays downwards at an angle to complete the initial cooling of the heat-affected zone, the collector flat pipe 40 blows downwards over a large area for deep cooling, and the nozzle 38 extends directly into the inside of the cut to cool the cross-section. The three layers of cooling are carried out simultaneously. Compared with the old-fashioned automatic arc cutting equipment with only single air cooling, it can significantly reduce the formation of hardened layers and microcracks in the cut, reducing the probability of workpiece scrapping during subsequent cold heading from the source. The arc-shaped surface 41 at the front end of the lifting plate 35 smoothly fits the surface of the workpiece. When encountering recast oxide layers of varying thickness, the pressure block 3502 slides up and down in the side groove 36, and the tension spring 3503 adapts to the thickness, so the scraper will not scrape and damage the base material.

[0030] Furthermore, the drive unit 26 uses a miniature fully enclosed ball screw servo slide module, which has a fast response speed and can adjust the lateral position of the vertical scraper 27 in real time to adapt to the width and narrowness of the kerf formed by cutting metal raw materials of different thicknesses, ensuring that the slag and brittle recast layer on the inner wall of the kerf are completely cleaned without leaving any dead corners. The upper plate 20 and the lower plate 25 are connected as a whole by the U-shaped connector 30. When the telescopic rod 24 is pulled, the upper and lower scrapers work synchronously, cleaning the cutting plane and the inner wall of the kerf at the same time in one go, without the need for two separate processing steps, thus improving the processing efficiency of intelligent manufacturing equipment.

[0031] Furthermore, the spring 2201 inside the chute cylinder 22 is matched with the telescopic rod 23. When the entire cooling scraping mechanism moves a long distance with the arc cutting assembly 13, the top of the telescopic rod 23 will compress the spring 2201 to buffer and dampen the vibration, reduce the vibration caused by the long stroke movement, protect the cooling pipes, precision scrapers and other vulnerable parts, and extend the service life of the entire intelligent manufacturing equipment. The spring 29 is sleeved on the outside of the retraction rod 28. When the telescopic rod 24 pulls the upper plate 20 and the lower plate 25 away from the mounting plate 21, the spring 29 continues to stretch. After the processing of a single workpiece is completed, the spring rebounds, driving the upper plate 20 and the lower plate 25 to automatically return to the initial position without the need for additional power reset, simplifying the equipment control logic.

[0032] Working Principle: This device is an integrated intelligent manufacturing equipment for high wear-resistant alloy steel fastener blank blanking. The core processing unit is the arc cutting component 13, which is a new type of automatic arc cutting equipment integrating cooling and defect scraping functions. The entire set of equipment can simultaneously complete automated feeding, arc cutting, graded low-temperature cooling, recast layer and slag scraping of the cut, and multi-mode processing of flat cutting / bevel cutting / V-shaped cutting. The complete process of the linkage operation of each component is as follows: Both drive unit 1 (2) and drive unit 2 (8) use servo motors. The frame 1 is equipped with an electric push rod to control the extension and retraction of the push rod 18. The external robotic arm can transport the metal raw material to be processed and place it on the surface of the placement rack 17. After the single raw material is cut, the robotic arm will take the finished product away from the placement rack 17, realizing unmanned loading and unloading of intelligent manufacturing equipment.

[0033] Drive unit 2 starts and drives lead screw 3 to rotate continuously. Lead screw 3 drives threaded block 4 to move synchronously through threaded engagement. Threaded block 4 is connected to slider 6. Slider 6 slides linearly along guide rod 5, synchronously driving the connecting plate 7 to move laterally. At the same time, drive unit 8 starts and drives lead screw 9 to rotate. Lead screw 9 drives threaded block 10 to move. Threaded block 10 drives slider 12 to slide longitudinally along guide rod 11. The bottom end of slider 12 is fixed to mounting bracket 14 and arc cutting assembly 13. By relying on the coordinated translation of drive unit 2 and drive unit 8, the arc cutting assembly 13 can be flexibly moved to any point that needs to be processed. It can cut the raw material straight or move along an inclined trajectory to process bevels and V-shaped bevels.

[0034] The frame 1 has a built-in electric actuator that drives the push rod 18 to extend forward and push the metal material on the placement rack 17 forward, accurately delivering the material to the corresponding processing point of the arc cutting assembly 13; the synchronous cylinder 19 extends to push the connecting rod 31 to move forward, the front end of the connecting rod 31 is connected to the rotating block 33, the rotating block 33 drives the entire set of mounting plates 21, upper plates 20 and lower plates 25 to move together towards the arc cutting assembly 13 until the upper plates 20 and lower plates 25 reach the side and below the arc cutting assembly 13. In this state, telescopic rod 1 23 is positioned directly above the irregular block 4203 of the insert rod 42, and telescopic rod 24 is positioned directly above the fixed block 34. The irregular block 4203 of the insert rod 42 is embedded in the receiving groove 3302 and irregular groove 3303 inside the rotating block 33. The square block 4202 at the bottom of the insert rod 42 is inserted into the square groove 3201 of the rotating base 32. The insert rod 42 locks the rotating block 33 and the rotating base 32, preventing the rotating block 33 from rotating. This ensures that the cylinder 19 pushes the mounting plate 21, upper plate 20, and lower plate 25 smoothly and without deviation, and without rotation or shaking.

[0035] After reaching the basic processing position, the telescopic rod 1 23 and telescopic rod 24 inside the slide tube 22 are both independent electric push rods, and the two electric push rods extend downwards synchronously; the telescopic rod 1 23 presses down against the irregular block 4203 at the top of the insert rod 42, the irregular block 4203 presses down to compress the compression spring 43, the insert rod 42 moves downwards as a whole, the irregular block 4203 disengages from the irregular groove 3303, the square block 4202 disengages from the square groove 3201, and the locking state of the rotating block 33 is released. At this time, the rotating block 33 can rotate freely on the rotating base 32; the synchronous telescopic rod 24 extends downwards and inserts into the opening of the side fixing block 34 of the upper plate 20, completing the connection and fixation with the upper plate 20.

[0036] The arc cutting assembly 13 starts cutting, and at the same time, the telescopic rod 24 pulls the fixed block 34, causing the upper plate 20 and the lower plate 25 to move synchronously along the cutting direction of the arc cutting assembly 13. The processing chamber 2001 opened in the middle of the upper plate 20 covers the heat-affected zone that is adjacent to the cut after the cutting is completed. The input pipe assembly 39 delivers cryogenic nitrogen, one path to the nozzle 37 and the other to the collector flat tube 40. The flow divider 4001 inside the collector flat tube 40 evenly distributes the airflow. The collector flat tube 40 outputs nitrogen downwards to perform secondary deep cooling on the heat-affected zone. The nozzle 37 sprays nitrogen downwards at an angle for initial cooling. The nozzle 38 extends directly into the cut to directly cool the cut surface. The lifting plate 35 is arranged in the processing chamber 2001 near the arc cutting assembly 13 to prevent the cryogenic nitrogen from spreading forward and interfering with the ongoing arc cutting process (the lifting plate 35 can block most of the cryogenic nitrogen, and the diffusion of a small amount of nitrogen will not significantly interfere with the arc stability), ensuring the cutting stability of the automatic arc cutting equipment.

[0037] As the upper plate 20 and lower plate 25 continue to move along the cutting direction, the horizontal scraper 2003 fixed on the inner wall of the processing chamber 2001 uniformly scrapes away the recast layer and oxide scale formed in the heat-affected zone. Two sets of vertical scrapers 27 above the lower plate 25 simultaneously clean the slag and brittle hardened structure adhering to the inner wall of the cut. A drive unit 26 is mounted above the lower plate 25. The drive unit 26 uses a miniature fully enclosed ball screw servo slide module, which can finely adjust the left and right positions of the vertical scrapers 27 according to the real-time cut width to adapt to different cut gap sizes. The arc-shaped surface 41 at the front end of the lifting plate 35 3501 smoothly contacts the recast oxide layer on the workpiece surface. When encountering recast layers or oxide scale of uneven thickness, the pressure block 3502 at the rear end of the plate 3501 slides up and down inside the side groove 36, simultaneously stretching or compressing the spring 3503 to adapt to changes in surface thickness and prevent the scraper from getting stuck and scratching the base material.

[0038] As the telescopic rod 24 pulls the fixed block 34 forward, the distance between the upper plate 20, the lower plate 25, and the mounting plate 21 continuously increases, and the spring 29 sleeved on the outside of the retraction rod 28 is stretched. If the equipment switches to the oblique or V-shaped cutting mode, the arc cutting assembly 13 moves along the inclined trajectory, and the telescopic rod 24 synchronously drives the upper plate 20, the mounting plate 21, and the lower plate 25 to follow the inclined direction. The rotating block 33, whose lock has been released, will rotate synchronously along the rotating base 32 to match the inclined processing angle. When the entire cooling and scraping mechanism needs to move a long distance with the arc cutting assembly 13, the top of the telescopic rod 23 will contact the bottom of the sliding cylinder 22, compressing the spring 2201 inside the sliding cylinder 22. The spring 2201 provides buffering, reducing the vibration caused by the long stroke movement and protecting the precision scraping and cooling components of the entire intelligent manufacturing equipment.

[0039] After all the processes of cutting, cooling, and scraping a single metal material are completed, each drive component and electric push rod is reset in reverse order. Spring 1 2201, Spring 2 29, Spring 3 3503, and Spring 4 43 all spring back to their initial state. Push rod 18 retracts, the robotic arm removes the finished product, and then a new raw material is placed to carry out the next cutting process.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal raw material cutting device for processing high wear-resistant fasteners, comprising a frame (1), characterized in that: A placement rack (17) is fixedly installed at the upper end of the frame (1). The upper end of the frame (1) is provided with a mounting bracket (14), and the lower end of the mounting bracket (14) is fixedly installed with an arc cutting assembly (13). The bottom end of the frame (1) is fixedly installed with a telescopic rod two (24), and the bottom end of the frame (1) is fixedly installed with a sliding groove cylinder (22). The sliding groove cylinder (22) is slidably connected with a telescopic rod one (23). The upper end of the frame (1) is provided with a mounting plate (21), and multiple sets of retraction rods (28) slide through the mounting plate (21). The ends of the two sets of retraction rods (28) at the upper end are fixedly connected to an upper plate (20), and the ends of the two sets of retraction rods (28) at the lower end are fixedly connected to a lower plate (25). A processing chamber (2001) is provided in the middle of the upper plate (20). A horizontal scraper (2003) is fixedly connected to the side wall of the processing chamber (2001). One end of the upper plate (20) is provided with a slanted baffle (2002). A lifting plate (35) is provided at the upper end of the upper plate (20). A spray outlet (37) is provided on the inner wall of the processing chamber (2001). A flow collecting flat tube (40) is fixedly connected to the inner wall of the processing chamber (2001). The opening of the flow collecting flat tube (40) faces downward. A spray pipe (38) is connected to the side end of the flow collecting flat tube (40). The upper end of the lower plate (25) is provided with two sets of symmetrically arranged vertical scrapers (27). The upper plate (20) and the lower plate (25) are fixedly connected by a U-shaped connector (30).

2. The metal raw material cutting equipment for processing high wear-resistant fasteners according to claim 1, characterized in that: The upper end of the frame (1) is fixedly installed with a drive unit (2), the output end of the drive unit (2) is fixedly connected with a lead screw (3), the lead screw (3) is threadedly connected with a threaded block (4), the upper end of the frame (1) is fixedly connected with a guide rod (5), and the guide rod (5) is slidably connected with a slider (6).

3. The metal raw material cutting equipment for processing high wear-resistant fasteners according to claim 2, characterized in that: The upper end of the frame (1) is fixedly connected to a side plate (15), and an auxiliary rod (16) is fixedly installed on the plate body of the side plate (15). The upper end of the slider (6) is fixedly connected to a connecting plate (7), and the other end of the connecting plate (7) is slidably connected to the auxiliary rod (16). The bottom end of the connecting plate (7) is fixedly installed with a driving part (8), and the output end of the driving part (8) is fixedly connected to a lead screw (9). The lead screw (9) is threadedly connected to a threaded block (10). The bottom end of the connecting plate (7) is fixedly connected to a guide rod (11), and a slider (12) is slidably connected to the guide rod (11). The slider (12) is fixedly connected to the threaded block (10), and the mounting bracket (14) is fixedly connected to the bottom end of the slider (12).

4. The metal raw material cutting equipment for processing high wear-resistant fasteners according to claim 1, characterized in that: The frame (1) is provided with a push rod (18) for pushing the raw material to be processed, and a spring (2201) is fixedly connected between the inner wall of the groove cylinder (22) and the top end of the telescopic rod (23).

5. The metal raw material cutting equipment for processing high wear-resistant fasteners according to claim 1, characterized in that: A cylinder (19) is fixedly installed at the upper end of the frame (1). A connecting rod (31) is fixedly connected to the output end of the cylinder (19). A rotating block (33) is fixedly connected to the end of the connecting rod (31) away from the cylinder (19). The rotating block (33) consists of a rotating body (3301) and a receiving groove (3302) and a shaped groove (3303) opened in the rotating body (3301). The receiving groove (3302) and the shaped groove (3303) are connected. The receiving groove (3302) is located below the shaped groove (3303).

6. The metal raw material cutting equipment for processing high wear-resistant fasteners according to claim 5, characterized in that: The mounting plate (21) is fixedly connected to a rotating base (32) at one end near the cylinder (19). The rotating base (32) consists of an I-shaped rotating body (3202) and a square groove (3201) opened at the bottom of the I-shaped rotating body (3202). The rotating block (33) is rotatably connected to the upper end of the rotating base (32). The rotating block (33) and the rotating base (32) are movably connected to a rod (42). The rod (42) consists of a shaped block (4203), a rod body (4201) and a square block (4202) from top to bottom. A spring (43) is provided between the bottom surface of the shaped block (4203) and the bottom wall of the receiving groove (3302). The spring (43) is sleeved on the rod body (4201).

7. The metal raw material cutting equipment for processing high wear-resistant fasteners according to claim 1, characterized in that: Spring 2 (29) is fixedly connected between the mounting plate (21) and the upper plate (20) and the lower plate (25), and the spring 2 (29) is sleeved on the rod body of the retraction rod (28).

8. The metal raw material cutting equipment for processing high wear-resistant fasteners according to claim 1, characterized in that: The upper end of the lower plate (25) is fixedly installed with a drive unit three (26), the vertical scraper (27) is fixedly connected to the output end of the drive unit three (26), and the side end of the upper plate (20) is fixedly connected with a fixing block (34).

9. The metal raw material cutting equipment for processing high wear-resistant fasteners according to claim 1, characterized in that: An input pipe assembly (39) is fixedly installed on the upper end of the upper plate (20). The input pipe assembly (39) is connected to the nozzle (37) and the flow collecting flat pipe (40) respectively. A flow divider block (4001) is fixedly connected inside the flow collecting flat pipe (40).

10. A metal raw material cutting device for processing high wear-resistant fasteners according to claim 9, characterized in that: The lifting plate (35) is composed of a plate body (3501) and a pressure block (3502). A side groove (36) is provided in the upper plate (20). The pressure block (3502) is slidably connected in the groove of the side groove (36). A spring (3503) is fixedly connected between the bottom wall of the side groove (36) and the bottom surface of the pressure block (3502). The end of the plate body (3501) facing the arc cutting assembly (13) is set as an arc surface (41).

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