Automatic sawing machine for sawing metal bars
By detecting changes in sawing resistance using sensors on an automated sawing machine, and adjusting the clamping components and coolant spray volume, the problem of unsuitable clamping force during metal bar sawing is solved, achieving moderate clamping and precise cooling, thus improving sawing efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHANGJIAGANG KANGDA MEDICAL TECH CO LTD
- Filing Date
- 2026-06-12
- Publication Date
- 2026-08-04
AI Technical Summary
During the sawing process of metal bars, existing technology cannot adaptively adjust the clamping force, resulting in slight damage to the bar due to pressure.
An automated sawing machine is used. Sensors detect changes in sawing resistance and adjust the clamping force of the clamping components and the amount of coolant spray to ensure that the clamping force is appropriate during sawing, avoid damage to the bar stock, and adjust the amount of coolant spray according to the cutting position.
It enables adaptive adjustment of clamping force and coolant spray volume based on the position of the bar during sawing, avoiding bar deformation and damage, and improving sawing efficiency and quality.
Smart Images
Figure CN122500265A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of metal bar sawing technology, and specifically to an automated sawing machine for metal bar sawing. Background Technology
[0002] Orthopedic surgical instruments such as bone hammers, orthopedic screwdrivers, and bone chisels generally use medical stainless steel rods and titanium alloy rods as raw materials. The processing flow involves cutting the rods into rows or individual lengths using a circular saw blade. The cut rods are then forged, finely ground, and sterilized to produce clinical surgical instruments.
[0003] Chinese invention patent document CN115229267B discloses a molybdenum-copper alloy rod cutting device; it includes a processing table, on which a feeding avoidance frame and a processing avoidance frame are provided; a separating conveyor and a transfer alignment mechanism are installed at the feeding avoidance frame; a fixed-length material support mechanism is installed on the processing table below the processing avoidance frame and aligned with the transfer alignment mechanism; multiple feeding drive mechanisms are installed on the processing table in cooperation with the transfer alignment mechanism; rod side clamping mechanisms are mirror-symmetrically arranged on both sides of the rod's feeding direction on the processing table; and a rod cutting mechanism for cutting the rod is installed on the processing table above the processing avoidance frame; the cutting device provided by the above-mentioned prior art can automatically complete a series of automated, continuous, and batch cutting operations, including rod feeding and conveying, cutting alignment, fixed-length cutting, cutting conveying, cutting clamping, automatic cutting, and automatic unloading.
[0004] However, medical metal rods are often made of fine materials. During the cutting process, in order to ensure the stability of the rod during cutting, the clamping force is always large. This may cause the rod to be continuously compressed, resulting in slight damage, and the clamping force cannot be adjusted adaptively. Summary of the Invention
[0005] The purpose of this invention is to address the problems existing in the background art by proposing an automated sawing machine for sawing metal bars.
[0006] The technical solution of this invention: An automated sawing machine for sawing metal bars, comprising a support table and a working mechanism, the working mechanism being mounted on the support table, and further comprising: a clamping mechanism mounted on the support table; and an adjusting mechanism mounted on the support table, which adjusts the amount of coolant sprayed according to the sawing resistance; the clamping mechanism includes a drive assembly, a sawing assembly, a clamping assembly, and an adjusting assembly; the drive assembly is mounted in the inner cavity of the support table and is used to drive the sawing assembly; the sawing assembly is mounted on the drive end of the drive assembly and is used to saw the metal bar; the clamping assembly is mounted inside the support table and is used to clamp the metal bar; the adjusting assembly is mounted inside the support table and is used to prevent the clamping assembly from shifting; the clamping assembly clamps the metal bar with low force, the drive assembly drives the sawing assembly to saw the metal bar, sawing the middle part of the metal bar, and the clamping force increases.
[0007] Preferably, the drive assembly includes a drive device and a moving stage; the drive device is installed inside the support platform and is used to drive the moving stage; the moving stage is installed on the drive end of the drive device; and the sawing assembly is installed on the moving stage.
[0008] Preferably, the sawing assembly includes a sensor, a support frame, and an electric circular saw; the mounting end of the sensor is connected to the moving table and is used to detect the resistance experienced by the electric circular saw; the support frame is mounted on the detection end of the sensor; and the electric circular saw is mounted on the support frame.
[0009] Preferably, the clamping assembly includes a second driving device, a lifting plate, a first elastic element, a clamping element, and a side clamping device; the second driving device is mounted on a support platform; the lifting plate is mounted on the lifting end of the second driving device; the two ends of the first elastic element are respectively connected to the lifting plate and the clamping element; the side clamping device is mounted on the support platform and is used to limit the metal bar from the side.
[0010] Preferably, the adjustment assembly includes a push wheel, a support rod, an elastic element II, an inclined rod, and a conical element; the support rod is mounted on the support platform; the two ends of the elastic element II are respectively connected to the support rod and the inclined rod; the bottom of the elastic element II is connected to the conical element; the push wheel is mounted on the lifting plate, and the push wheel abuts against the inclined rod.
[0011] Preferably, the adjustment mechanism includes an L-bar, a telescopic tube, an infusion device, a spray head, and an adjustment unit; the L-bar is mounted on a movable platform and is used to support the spray head; the fixed end of the telescopic tube is mounted on the working mechanism; the infusion device is mounted on the fixed end of the telescopic tube; the movable end of the telescopic tube is connected to the spray head; the spray head moves with the L-bar; and the adjustment component is mounted on the movable end of the telescopic tube.
[0012] Preferably, the adjustment unit includes a third driving device, a plugging head, and a control cylinder; the control cylinder is connected to the movable end of the telescopic tube; the third driving device is installed on the top of the control cylinder, and the output end of the third driving device is connected to the plugging head, which is located at the connection between the telescopic tube and the control cylinder.
[0013] Preferably, the working mechanism includes a working chamber one, a conveyor and a working chamber two; the working chamber one and the working chamber two are respectively installed on both sides above the support platform; the conveyor is installed on the support platform and is used to transport metal bars; the fixed end of the telescopic tube is installed on the working chamber one; the adjustment unit is located in the working chamber two.
[0014] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects: The bar stock is placed on the conveyor and transported between working chamber one and working chamber two. Then, the side clamping device is activated to clamp the bar stock from the side. Next, the drive device two is activated, causing the clamping components under the lifting plate to press down and hold the bar stock in place. At this point, the drive device one is activated, moving the electric circular saw towards the bar stock to cut it. The resistance experienced by the electric circular saw differs depending on whether it cuts at the edge or the center of the bar stock. The resistance is detected by a sensor. When cutting at the edge, the lifting plate descends a certain distance; when cutting at the center, the resistance increases. The drive device two is then activated, causing the lifting plate to press down to its maximum distance, thus causing the elastic element one to contract to its shortest length, maximizing the pressure applied to the bar stock by the clamping components. After cutting, the drive device two causes the lifting plate to rise a certain distance. This achieves a balance between moderate clamping force when cutting the edge and increased clamping force when cutting the center, preventing damage or deformation of the bar stock due to continuous excessive clamping force.
[0015] When the electric circular saw cuts to the center of the metal bar, the sawing resistance increases. At this time, the heat generated is the greatest because the center of the metal bar is the thickest. Therefore, the drive device is activated to drive the blocking head to rise in the control cylinder, reducing the blocking area of the blocking head at the connection between the telescopic tube and the control cylinder. This increases the amount of coolant sprayed by the spray head, thus achieving adaptive adjustment of the coolant spray volume according to the position of the cutting bar. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the working chamber one proposed in this invention; Figure 3 This is a schematic diagram of the side clamping device proposed in this invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the structure of the clamping member proposed in this invention; Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle; Reference numerals: 1. Support platform; 2. Working chamber one; 3. Conveying component; 4. Working chamber two; 5. Drive device one; 6. Push wheel; 7. Moving platform; 8. Sensor; 9. Support frame; 10. Electric circular saw; 11. L-bar; 12. Drive device two; 13. Lifting plate; 14. Elastic component one; 15. Clamping component; 16. Support rod; 17. Elastic component two; 18. Inclined rod; 19. Conical component; 20. Side clamping device; 21. Telescopic tube; 22. Infusion equipment; 23. Spray head; 24. Drive device three; 25. Plug head; 26. Control cylinder. Detailed Implementation
[0017] Example 1, as Figures 1-6 As shown, the present invention proposes an automated metal bar sawing machine, including a support platform 1 and a working mechanism. The working mechanism is mounted on the support platform 1 and further includes: a clamping mechanism mounted on the support platform 1; and an adjusting mechanism mounted on the support platform 1, which adjusts the coolant spray volume according to the sawing resistance. The clamping mechanism includes a drive assembly, a sawing assembly, a clamping assembly, and an adjusting assembly. The drive assembly is mounted inside the support platform 1 and is used to drive the sawing assembly. The sawing assembly is mounted on the drive end of the drive assembly and is used to saw the metal bar. The clamping assembly is mounted inside the support platform 1 and is used to clamp the metal bar. The adjusting assembly is mounted inside the support platform 1 and is used to prevent the clamping assembly from shifting. The clamping assembly clamps the metal bar with low force, and the drive assembly drives the sawing assembly to saw the metal bar. When sawing the middle part of the metal bar, the clamping force increases. Both drive device 212 and drive device 24 can be cylinders.
[0018] The drive assembly includes a drive device 5 and a moving table 7; the drive device 5 is installed inside the support platform 1 and is used to drive the moving table 7; the moving table 7 is installed on the drive end of the drive device 5; the sawing assembly is installed on the moving table 7; the drive device 5 can be a ball screw module or a component that drives the moving table 7 to move.
[0019] The sawing assembly includes a sensor 8, a support frame 9, and an electric circular saw 10. The sensor 8 is a pressure sensor. The mounting end of the sensor 8 is connected to the moving table 7 and is used to detect the resistance experienced by the electric circular saw 10. The support frame 9 is mounted on the detection end of the sensor 8. The electric circular saw 10 is mounted on the support frame 9. The electric circular saw 10 includes a motor and a circular saw blade. The motor is mounted on the support frame 9, and the electric circular saw 10 is mounted on the output shaft of the motor. When the electric circular saw 10 cuts the side of the metal bar, the metal bar is thinner at this point, so the sawing resistance experienced by the sensor 8 is smaller. The sensor 8 is then connected to an external controller, which in turn controls the drive device 2 12 and the drive device 3 24. A sawing groove is provided on the support table 1, and the electric circular saw 10 moves along the sawing groove to saw the metal bar.
[0020] The clamping assembly includes a second drive device 12, a lifting plate 13, an elastic element 14, a clamping element 15, and a side clamping device 20. The second drive device 12 is mounted on the support platform 1. The lifting plate 13 is mounted on the lifting end of the second drive device 12. The two ends of the elastic element 14 are respectively connected to the lifting plate 13 and the clamping element 15. The side clamping device 20 is mounted on the support platform 1 and is used to limit the metal bar from the side. The second drive device 12 can be a cylinder 1. The side clamping device 20 consists of a second cylinder and a clamping plate. The second cylinder is mounted on the support platform 1, and the clamping plate is mounted on the output end of the second cylinder. When the metal bar moves below the clamping element 15, the second cylinder is activated to drive it. The clamping plate clamps and limits the metal bars from the side of a row or a single metal bar. Then, the drive device 2 12 is activated to drive the lifting plate 13 to a medium height. The lifting plate 13 presses down on the elastic element 14, shortening the length of the elastic element 14 and putting it in a contracted filling state. The clamping element 15 is pressed onto the metal bar with a small clamping force. When the electric circular saw 10 cuts to the middle of the metal bar, the sawing resistance of the electric circular saw 10 increases. Then, the drive device 2 12 is activated to drive the lifting plate 13 to descend a further distance, causing the elastic element 14 to contract to its shortest distance. The clamping element 15 is subjected to the maximum force, which in turn maximizes the clamping force on the metal bar.
[0021] The adjustment assembly includes a push wheel 6, a support rod 16, an elastic element 17, an inclined rod 18, and a conical element 19. The support rod 16 is mounted on the support platform 1. The two ends of the elastic element 17 are connected to the support rod 16 and the inclined rod 18, respectively. The bottom of the elastic element 17 is connected to the conical element 19. The push wheel 6 is mounted on the lifting plate 13, and the push wheel 6 holds the inclined rod 18 against it. In the initial state, the lifting plate 13 is at its highest point, the push wheel 6 holds the inclined rod 18 against it, and the elastic element 17 is in a compressed state. The metal bar is placed on the support platform 1, and the lifting plate 13 drives the push wheel 6 to descend along the inclined surface at the top of the inclined rod 18. During this process, The clamping member 15 has moved below the conical member 19. At this time, the elasticity of the elastic member 17 drives the inclined rod 18 to move towards the push wheel 6, so that the conical member 19 moves directly above the clamping member 15. This achieves the following: when the lifting plate 13 descends to a medium height, that is, when the electric circular saw 10 is sawing the side of the metal bar, the clamping member 15 is located a distance below the conical member 19. In some extreme cases, when the metal bar deviates, causing the metal bars to squeeze together and push the clamping member 15 in the opposite direction, the height of the clamping member 15 is limited by the conical member 19, thereby effectively clamping the metal bar.
[0022] Example 2, as Figures 1-3 , Figure 5 and Figure 6As shown, the present invention proposes an automated sawing machine for metal bar sawing. Compared with Embodiment 1, the adjustment mechanism of this embodiment includes an L-bar 11, a telescopic tube 21, a liquid delivery device 22, a spray head 23, and an adjustment unit. The L-bar 11 is mounted on the moving platform 7 and is used to support the spray head 23. The fixed end of the telescopic tube 21 is mounted on the working mechanism. The liquid delivery device 22 is mounted on the fixed end of the telescopic tube 21. The movable end of the telescopic tube 21 is connected to the spray head 23. The spray head 23 moves with the L-bar 11. The adjustment component is mounted on the movable end of the telescopic tube 21. The coolant input pipe is connected to the input end of the liquid delivery device 22. Then, the liquid delivery device 22 is started to deliver the coolant along the telescopic tube 21 to the spray head 23. Then, the coolant is sprayed onto the electric circular saw 10 through the spray head 23 for cooling.
[0023] The adjustment unit includes a drive device 24, a plug head 25, and a control cylinder 26. The control cylinder 26 is connected to the movable end of the telescopic tube 21. The drive device 24 is installed on the top of the control cylinder 26, and the output end of the drive device 24 is connected to the plug head 25. The plug head 25 is located at the connection between the telescopic tube 21 and the control cylinder 26. When the sawing resistance of the electric circular saw 10 increases, the drive device 24 is activated to drive the plug head 25 to rise inside the control cylinder 26, thereby reducing the blocking area of the plug head 25 at the connection between the telescopic tube 21 and the control cylinder 26.
[0024] The working mechanism includes a working chamber 1 (2), a conveyor 3, and a working chamber 2 (4); the working chamber 1 (2) and the working chamber 2 (4) are respectively installed on both sides above the support platform 1; the conveyor 3 is installed on the support platform 1 and is used to transport metal bars; the fixed end of the telescopic tube 21 is installed on the working chamber 1 (2); the adjustment unit is located inside the working chamber 2 (4).
[0025] In summary, in this application, the metal rods used in the production of medical devices are conveyed to the support table 1 above the sawing groove via the conveyor 3. Then, the side clamping device 20 is activated to clamp the rows or individual metal rods from the side. At the same time, the drive device 212 is activated to drive the lifting plate 13 to descend to a medium height. At this time, the clamping member 15 presses against the surface of the metal rod, and the elastic member 14 becomes compressed. The push wheel 6 descends along the inclined plane of the inclined rod 18. The elasticity of the elastic member 217 drives the inclined rod 18 and the conical member 19 to move towards the clamping member 15, thereby making the conical member 19 above the clamping member 15.
[0026] The plug head 25 is located at a lower position at the connection between the telescopic tube 21 and the control cylinder 26. Then, the drive device 1 5 is started to move the moving table 7 toward the metal bar. At the same time, the electric circular saw 10 rotates and first cuts from the side of the metal bar. As the electric circular saw 10 cuts from the side of the metal bar to the middle of the metal bar, the resistance encountered by the electric circular saw 10 gradually increases. The sensor 8 transmits the signal to the external controller and other control devices, thereby starting the drive device 2 12 to drive the lifting plate 13 to descend further, so that the elastic element 14 is compressed to its shortest length, so that the clamping element 15 clamps the top of the metal bar with the strongest force, avoiding the metal bar from being subjected to a large clamping pressure.
[0027] Simultaneously, the spray head 23 is activated, causing the blocking head 25 to rise within the control cylinder 26. This reduces the obstruction area at the connection between the telescopic pipe 21 and the control cylinder 26, thereby reducing the obstruction of the coolant within the telescopic pipe 21 by the blocking head 25. This increases the flow rate of coolant sprayed from the spray head 23 onto the electric circular saw 10 and the surface of the metal bar. Furthermore, the proximity of the drive device 24, the blocking head 25, and the control cylinder 26 to the spray head 23 ensures precise control of the coolant spray flow rate.
[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.
Claims
1. An automated sawing machine for sawing metal bars, comprising a support table (1) and a working mechanism, wherein the working mechanism is mounted on the support table (1), characterized in that, Also includes: A clamping mechanism is mounted on a support platform (1); An adjustment mechanism is installed on a support platform (1) and adjusts the amount of coolant sprayed according to the sawing resistance; The clamping mechanism includes a drive assembly, a sawing assembly, a clamping assembly, and an adjustment assembly; the drive assembly is installed inside the support platform (1) and is used to drive the sawing assembly; the sawing assembly is installed on the drive end of the drive assembly and is used to saw the metal bar; the clamping assembly is installed inside the support platform (1) and is used to clamp the metal bar; the adjustment assembly is installed inside the support platform (1) and is used to prevent the clamping assembly from shifting; the clamping assembly clamps the metal bar with low force, the drive assembly drives the sawing assembly to saw the metal bar, sawing the middle of the metal bar, and the clamping assembly increases its force.
2. The automated sawing machine for sawing metal bars according to claim 1, characterized in that, The drive assembly includes a drive device (5) and a moving stage (7); the drive device (5) is installed inside the support platform (1) and is used to drive the moving stage (7); the moving stage (7) is installed on the drive end of the drive device (5); the sawing assembly is installed on the moving stage (7).
3. The automated sawing machine for sawing metal bars according to claim 1, characterized in that, The sawing assembly includes a sensor (8), a support frame (9), and an electric circular saw (10); the mounting end of the sensor (8) is connected to the moving table (7) and is used to detect the resistance experienced by the electric circular saw (10); the support frame (9) is mounted on the detection end of the sensor (8); the electric circular saw (10) is mounted on the support frame (9).
4. The automated sawing machine for sawing metal bars according to claim 1, characterized in that, The clamping assembly includes a second drive device (12), a lifting plate (13), an elastic element (14), a clamping element (15), and a side clamping device (20); the second drive device (12) is mounted on the support platform (1); the lifting plate (13) is mounted on the lifting end of the second drive device (12); the two ends of the elastic element (14) are respectively connected to the lifting plate (13) and the clamping element (15); the side clamping device (20) is mounted on the support platform (1) and is used to limit the metal bar from the side.
5. An automated sawing machine for sawing metal bars according to claim 4, characterized in that, The adjustment assembly includes a push wheel (6), a support rod (16), an elastic element two (17), an inclined rod (18), and a conical element (19); the support rod (16) is mounted on the support platform (1); the two ends of the elastic element two (17) are connected to the support rod (16) and the inclined rod (18) respectively; the bottom of the elastic element two (17) is connected to the conical element (19); the push wheel (6) is mounted on the lifting plate (13), and the push wheel (6) abuts against the inclined rod (18).
6. An automated sawing machine for sawing metal bars according to claim 2, characterized in that, The adjustment mechanism includes an L-bar (11), a telescopic tube (21), an infusion device (22), a spray head (23), and an adjustment unit; the L-bar (11) is mounted on the moving platform (7) and is used to support the spray head (23); the fixed end of the telescopic tube (21) is mounted on the working mechanism; the infusion device (22) is mounted on the fixed end of the telescopic tube (21); the movable end of the telescopic tube (21) is connected to the spray head (23); the spray head (23) moves with the L-bar (11); the adjustment unit is mounted on the movable end of the telescopic tube (21).
7. An automated sawing machine for sawing metal bars according to claim 6, characterized in that, The adjustment unit includes a drive device three (24), a plug head (25) and a control cylinder (26); the control cylinder (26) is connected to the movable end of the telescopic tube (21); the drive device three (24) is installed on the top of the control cylinder (26), and the output end of the drive device three (24) is connected to the plug head (25), and the plug head (25) is located at the connection between the telescopic tube (21) and the control cylinder (26).
8. An automated sawing machine for sawing metal bars according to claim 6, characterized in that, The working mechanism includes a working chamber 1 (2), a conveyor (3) and a working chamber 2 (4); the working chamber 1 (2) and the working chamber 2 (4) are respectively installed on both sides above the support platform (1); the conveyor (3) is installed on the support platform (1) and is used to transport metal bars; the fixed end of the telescopic tube (21) is installed on the working chamber 1 (2); the adjustment unit is located inside the working chamber 2 (4).