Long bar machining machine tool

Abstract

The application relates to the field of long rod machining equipment, and discloses a long rod machining machine tool which comprises a rack, a chuck, a driving mechanism, a grinding and cutting mechanism and a limiting assembly. The rack is provided with a machining station. The grinding and cutting mechanism is arranged on the machining station of the rack and is used for grinding and cutting off the long rod. The chuck is slidably arranged on the rack and is arranged along a first direction with the machining station and is used for clamping or loosening the long rod. The driving mechanism is arranged on the rack and is in transmission connection with the chuck and is used for driving the chuck to reciprocatingly slide along the first direction. The limiting assembly is arranged on the rack and comprises a communicating pressing channel and a limiting hole. The pressing channel is located between the machining station and the chuck and is used for allowing the long rod to penetrate through. The limiting hole is located on the side, away from the pressing channel, of the machining station and is used for allowing one end of the long rod to be inserted. The long rod machining machine tool can solve the problems that the long rod needs to be repeatedly clamped during the machining process and it is difficult to guarantee the roundness and round runout.

Description

Technical Field

[0001] This invention relates to the field of long bar processing equipment, and more specifically to a long bar processing machine tool. Background Technology

[0002] In the traditional long bar machining field, with the increasing demand for high-precision and high-efficiency machining in the manufacturing industry, traditional machining methods are facing numerous challenges. Currently, the machining process for long bars mainly involves two steps: cutting and grinding. This process often relies on two independent pieces of equipment—a cutting machine and a grinding machine—to complete the machining separately. Specifically, the entire long bar is first fed into the cutting machine, where it is mechanically cut into several equal-length short segments. Subsequently, these short segments are transferred one by one to the grinding machine, undergoing rough grinding and fine grinding stages to achieve the required dimensional accuracy and surface finish. However, this machining mode has the following significant drawbacks:

[0003] The cutting and grinding of long bars require two separate machines, making continuous processing difficult. Each time equipment is changed or a processing stage is reached, the workpiece must be re-clamped, increasing operational complexity and introducing new positioning errors due to repeated clamping. This directly impacts the machining accuracy of the long bars, especially in high-precision applications where such errors are critical. Furthermore, due to their large lateral span, long bars are prone to slight runout during machining, making it difficult to guarantee roundness and circular runout, which also affects machining accuracy. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] This invention provides a long bar processing machine tool to solve the above-mentioned technical problems.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a long bar processing machine tool, comprising:

[0008] A machine frame, with processing stations mounted on it;

[0009] The grinding and cutting mechanism is located at the processing station on the machine frame and is used for grinding and cutting long bars;

[0010] The chuck is slidably mounted on the frame and arranged along the first direction with the processing station. The chuck is used to hold or release the long bar.

[0011] The drive mechanism is mounted on the frame and is connected to the chuck transmission. The drive mechanism is used to drive the chuck to slide back and forth along the first direction.

[0012] A limiting assembly is mounted on the frame and includes a connected pressure channel and a limiting hole. The pressure channel is located between the processing station and the chuck and is used for the long bar to pass through. The limiting hole is located on the side of the processing station away from the pressure channel and is used for the insertion of one end of the long bar.

[0013] Further, the aforementioned clamp includes:

[0014] The slide block is slidably mounted on the frame along the first direction;

[0015] A positioning clamp and a clamping tube are arranged on a slide along a first direction, with the clamping tube located between the positioning clamp and the pressing channel. The positioning clamp is used to clamp or release a long bar and is provided with a clamping channel. The clamping tube includes a guide tube and at least two elastic clamping arms. The guide tube extends along the first direction, and the feed end of the guide tube is connected to the clamping channel. The guide tube is used for the long bar to pass through. At least two elastic clamping arms are connected in a ring-shaped interval around the axis of the guide tube to the discharge end of the guide tube and form a positioning hole that is interference-fitted with the long bar. The positioning hole is coaxial with the clamping channel, and the elastic clamping arms can deform.

[0016] Furthermore, the aforementioned clamping tube also includes an outer tube, a guide tube fixed inside the outer tube, and an elastic clamping arm inside the outer tube, forming a deformation space between the elastic clamping arm and the inner circumferential wall of the outer tube.

[0017] Further, the aforementioned positioning fixture includes:

[0018] The chuck has a clearance opening in the middle for a long bar to pass through.

[0019] At least two clamping arms and a clamping arm drive assembly are provided. At least two clamping arms are rotatably connected to the chuck at even intervals around the relief opening. One end of each clamping arm is drivenly connected to the clamping arm drive assembly, and the other ends form a clamping channel coaxially connected to the relief opening. The clamping arm drive assembly is located on the chuck and is used to drive the other end of each clamping arm to rotate away from or towards the axis of the relief opening to expand or shrink the clamping channel.

[0020] Further, the aforementioned clamping arm drive assembly includes:

[0021] A ring block is sleeved on the chuck, and one end of each clamping arm is connected to the ring block via a rotating shaft and to the chuck via a rotating shaft.

[0022] A telescopic drive rod is provided, one end of which is fixedly connected to the ring block, and the telescopic rod of which is fixedly connected to the side of the chuck, for driving the chuck to rotate relative to the ring block.

[0023] Furthermore, the aforementioned limiting components include:

[0024] The limiting block is slidably mounted on the frame in the first direction and is provided with a limiting hole;

[0025] The pressure block is detachably mounted on the frame and is equipped with a pressure trough;

[0026] The pressure roller and the pressure roller drive are mounted on the output end of the pressure roller drive. A pressing channel is formed between the pressure roller and the pressing groove of the pressing block. The pressure roller drive is mounted on the frame and is used to drive the pressure roller to move toward the opening of the pressing groove to press the long bar tightly and make the long bar on the same axis as the clamp in the pressing channel.

[0027] In a further configuration, the aforementioned pressure block can be slidably mounted on the frame along the vertical direction, the pressure groove is V-shaped, and fasteners are provided between the pressure block and the frame to fix the pressure block and the frame.

[0028] Further configurations of the long bar machining machine include:

[0029] The locking device is located on the limiting block and is used to lock the thin, flexible long rod in the limiting hole.

[0030] A tensioning drive is mounted on the frame and is connected to the limit block via a transmission mechanism. The tensioning drive is used to drive the limit block to slide along a first direction.

[0031] In a further configuration, the long bar processing machine tool also includes a removal drive component, which is slidably mounted on the frame along a first direction and connected to the output end of the tensioning drive component. The output end of the removal drive component is connected to a limiting block and is used to drive the limiting block to move in a direction perpendicular to the first direction.

[0032] Furthermore, the long bar processing machine tool also includes a detection component and a detection drive component. The detection drive component is mounted on the machine frame and is connected to the detection component in a transmission manner. The detection drive component is used to drive the detection component to move in a direction perpendicular to the first direction. The detection component is used to detect the degree of radial runout during the rotation of the long bar.

[0033] (III) Beneficial Effects

[0034] Compared with the prior art, the long bar processing machine tool provided by the present invention has the following beneficial effects:

[0035] When using the long bar processing machine tool provided by this invention, firstly, the chuck clamps the long bar in its original position; then, the drive mechanism drives the chuck and the long bar to slide together along the first direction toward the processing station, so that one end of the long bar passes through the pressure channel and moves into the processing station, and is inserted into the limiting hole. The limiting component makes the long bar at the processing station and at the chuck coaxial; then, the chuck releases the long bar, and the drive mechanism drives the chuck to slide away from the processing station along the first direction and return to its original position; the chuck clamps the long bar in its original position again, and the grinding mechanism grinds the part of the long bar located at the processing station, and then cuts off the ground part of the long bar; after the cut-off long bar segment moves out of the processing station, the drive mechanism drives one end of the long bar to move into the processing station again, and the above steps are repeated to continuously process the long bar. In the aforementioned grinding and cutting process, the limiting component, through the pressure channels and limiting holes on both sides of the machining station, can respectively restrict the two ends of the long bar at the machining station within the pressure channels and limiting holes, thereby limiting the radial runout of the long bar at the machining station. Simultaneously, the chuck, while clamping the long bar, also restricts its radial runout, thus limiting the radial runout of the long bar at the machining station. It can be seen that this long bar machining machine tool can clamp and transport the long bar to grinding, cutting, and other processes continuously for processing by simply clamping it once with the chuck, solving the problem of accuracy loss caused by repeated clamping. Furthermore, the combination of the limiting component and the chuck effectively limits the radial runout of the long bar at the machining station, ensuring the roundness and circular runout of the long bar during processing, thereby greatly improving the machining accuracy of the long bar. Attached Figure Description

[0036] Figure 1 This is a perspective view of the long bar processing machine tool in the embodiment;

[0037] Figure 2 This is a cross-sectional view of the long bar processing machine tool in the embodiment;

[0038] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0039] Figure 4 This is a perspective view of the positioning fixture in the embodiment;

[0040] Figure 5 This is a schematic diagram of the structure of the pressure block, pressure roller, and pressure roller drive component in the embodiment;

[0041] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0042] Figure 7 This is a radial sectional view of the limiting block and locking fastener in the embodiment;

[0043] Figure 8 This is a top view of the long bar processing machine tool in the embodiment;

[0044] Figure 9 for Figure 8 Enlarged diagram of point C in the middle.

[0045] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments.

[0046] Icon labels:

[0047] 1. Machine frame; 11. Processing station;

[0048] 2. Grinding and cutting mechanism; 21. Coarse grinding wheel; 22. Fine grinding wheel; 23. Grinding drive component;

[0049] 3. Chuck; 31. Slide; 32. Positioning fixture; 321. Clamping channel; 322. Chuck; 3221. Displacement opening; 323. Clamping arm; 3231. Roller; 324. Clamping arm drive assembly; 3241. Telescopic drive rod; 3242. Ring block; 33. Clamping tube; 331. Guide tube; 332. Elastic clamping arm; 333. Outer tube; 334. Deformation space; 335. Positioning hole;

[0050] 4. Limiting component; 41. Pressing channel; 42. Limiting hole; 43. Limiting block; 44. Pressing block; 441. Pressing groove; 442. Fastener; 443. Slide groove; 45. Pressing roller; 46. Pressing roller drive component; 461. Swing arm;

[0051] 5. Drive mechanism; 6. Long bar; 7. Rotation mechanism;

[0052] 81. Locking component; 82. Tensioning drive component; 83. Removal drive component;

[0053] 91. Inspection component; 92. Inspection drive component. Detailed Implementation

[0054] 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.

[0055] This invention provides a long bar processing machine tool to solve the problems of repeated clamping of long bars 6 during processing and the difficulty in ensuring roundness and circular runout.

[0056] See Figure 1 and Figure 2 As shown, Figure 1 This is a perspective view of the long bar processing machine tool in the embodiment. Figure 2 The image shows a cross-sectional view of a long bar processing machine tool in the embodiment. The long bar processing machine tool includes a frame 1, a grinding and cutting mechanism 2, a chuck 3, a limiting component 4, and a driving mechanism 5.

[0057] The machine frame 1 is equipped with a processing station 11.

[0058] The grinding and cutting mechanism 2 is installed on the processing station 11 of the frame 1. The processing station 11 is used for grinding and cutting long bars 6.

[0059] The chuck 3 is slidably connected to the frame 1, and the chuck 3 and the processing station 11 are arranged along the first direction. The chuck 3 is used to clamp or release the long bar 6.

[0060] The drive mechanism 5 is mounted on the frame 1 and is connected to the chuck 3 in a transmission manner. The drive mechanism 5 is used to drive the chuck 3 to slide back and forth in the first direction.

[0061] The limiting assembly 4 is mounted on the frame 1, and includes a pressure channel 41 and a limiting hole 42 that are interconnected. The pressure channel 41 is located between the processing station 11 and the chuck 3, and is used for the long rod 6 to pass through. The limiting hole 42 is located on the side of the processing station 11 opposite to the pressure channel 41, and is used for the insertion of one end of the long rod 6. Thus, the pressure channel 41 and the limiting hole 42 together limit the radial position of the long rod 6, so that the long rod 6 is on the same axis at the processing station 11 and at the chuck 3. It should be noted that the pressure channel 41 and the limiting hole 42 can be coaxially arranged.

[0062] When using the long bar processing machine tool described above, firstly, the chuck 3 clamps the long bar 6 in its original position; then, the drive mechanism 5 drives the chuck 3 and the long bar 6 to slide together toward the processing station 11, so that one end of the long bar 6 passes through the pressure channel 41 and moves into the processing station 11, and is inserted into the limiting hole 42. The limiting component 4 makes the long bar 6 at the processing station 11 and at the chuck 3 on the same axis; then the chuck 3 releases the long bar 6, and the drive mechanism 5 drives the chuck 3 to slide in the direction away from the processing station 11, returning to its original position; the chuck 3 clamps the long bar 6 in its original position again, while the grinding and cutting mechanism 2 grinds the part of the long bar 6 located at the processing station 11, and then cuts off the ground part of the long bar 6; after the cut-off long bar 6 segment moves out of the processing station 11, the drive mechanism 5 drives one end of the long bar 6 to move into the processing station 11 again, and repeats the above steps, so as to continuously process the long bar 6.

[0063] During the aforementioned grinding and cutting process, the limiting component 4, through the pressure channels 41 and limiting holes 42 on both sides of the processing station 11, can restrict both ends of the long bar 6 at the processing station 11 within the pressure channels 41 and limiting holes 42 respectively, thereby limiting the radial runout of the long bar 6 at the processing station 11. Meanwhile, the chuck 3, while clamping the long bar 6, can also limit the radial runout of the long bar 6, thus limiting its radial runout at the processing station 11. It can be seen that this long bar processing machine tool, by clamping the long bar 6 once with the chuck 3, can continuously process the long bar 6 through grinding, cutting, and other processes, solving the problem of accuracy loss caused by repeated clamping. Furthermore, the combination of the limiting component 4 and the chuck 3 effectively limits the radial runout of the long bar 6 at the processing station 11, ensuring the roundness and circular runout of the long bar 6 during processing, thereby greatly improving the processing accuracy of the long bar 6.

[0064] The aforementioned drive mechanism 5 can use linear drive mechanisms such as lead screw and nut linear modules, electric cylinders or hydraulic cylinders, and the chuck 3 is connected to the output end of the drive mechanism 5 by means of screwing or welding.

[0065] See Figure 1 and Figure 2 As shown, the above-mentioned long bar processing machine tool also includes a rotating mechanism 7. The rotating mechanism 7 can be installed on the output end of the drive mechanism 5. The output end of the rotating mechanism 7 is connected to the chuck 3. In this way, when grinding the long bar 6, the rotating mechanism 7 drives the chuck 3 to rotate, thereby driving the long bar 6 to rotate. At the same time, the grinding mechanism 2 is started, so that the long bar 6 at the processing station 11 can be ground.

[0066] See Figure 1 , Figure 2 and Figure 3 As shown, Figure 3 for Figure 2 The enlarged schematic diagram at point A shows that, in one embodiment of the chuck 3, the chuck 3 includes a slide 31, a positioning fixture 32, and a clamping tube 33. The slide 31 is slidably connected to the slide rail or guide rod of the frame 1 along a first direction. The positioning fixture 32 and the clamping tube 33 are arranged on the slide 31 along the first direction, and the clamping tube 33 is located between the positioning fixture 32 and the pressing channel 41. The positioning fixture 32 is used to clamp or release the long rod 6, and has a clamping channel 321. The clamping tube 33 includes a guide tube 331 and at least two elastic clamping arms 332. The guide tube 331 extends along the first direction, and the feed end of the guide tube 331 is connected to the clamping channel 321 in the positioning fixture 32. The guide tube 331 is used for the long rod 6 to pass through and restricts the conveying path of the long rod 6. At least two elastic clamping arms 332 are annularly spaced around the axis of the guide tube 331 and connected to the discharge end of the guide tube 331, forming a positioning hole 335 that is interference-fitted with the long rod 6. The positioning hole 335 is coaxially distributed with the clamping channel 321, and the elastic clamping arms 332 can deform.

[0067] As can be seen, the clamping tube 33 clamps the long rod 6 through the positioning hole 335. Since the elastic clamping arm 332 can deform, it effectively prevents damage to the long rod 6 from the clamping tube 33. However, this can cause the long rod 6 to radially run within the guide tube 331, thus increasing the radial runout of the end of the long rod 6. The positioning fixture 32, working in conjunction with the clamping tube 33, effectively limits the radial runout of the long rod 6 within the guide tube 331. It can be seen that this long rod processing machine tool, through the cooperation of the clamping tube 33 and the positioning fixture 32, can clamp and transport the long rod 6 without damaging it, and can also limit the radial runout of the long rod 6, improving the processing accuracy of the long rod 6 at the processing station 11. In this embodiment, there are three elastic clamping arms 332, and the three elastic clamping arms 332 are evenly distributed in a ring, resulting in a more stable clamping effect.

[0068] See Figure 3 As shown, the clamping tube 33 may further include an outer tube 333, with the guide tube 331 fastened to the outer tube 333 by screws. The elastic clamping arm 332 is located inside the outer tube 333, and a deformation space 334 is formed between the elastic clamping arm 332 and the inner circumferential wall of the outer tube 333. In this way, the outer tube 333 can limit the degree of outward deformation of the elastic clamping arm 332, thereby preventing the long rod 6 from undergoing large-scale radial runout. Specifically, when the radial runout of the long rod 6 causes the elastic clamping arm 332 to deform outward to abut against the inner wall of the outer tube 333, the elastic clamping arm 332 cannot continue to deform outward, thereby limiting the radial runout of the long rod 6 at the positioning hole 335 to not exceed the inner diameter of the outer tube 333.

[0069] The output end of the aforementioned rotating mechanism 7 can be connected only to the outer tube 333. Specifically, the rotating mechanism 7 can use a stepper motor, which is connected to the outer tube 333 via a gear set. In this way, the rotating mechanism 7 drives the outer tube 333 to rotate, which in turn drives the long rod 6 to rotate. There is no need to drive the entire chuck 3 to rotate, which effectively reduces the energy consumption of the rotating mechanism 7 and saves space.

[0070] See Figure 2 and Figure 4 As shown, Figure 4The image shows a perspective view of the positioning fixture in one embodiment. The positioning fixture 32 includes a chuck 322, at least two clamping arms 323, and a clamping arm drive assembly 324. The chuck 322 has a clearance opening 3221 in its center for the long rod 6 to pass through. At least two clamping arms 323 are rotatably connected to the chuck 322 at even intervals around the clearance opening 3221. One end of each clamping arm 323 is driveably connected to the clamping arm drive assembly 324, and the other ends of each clamping arm 323 form the aforementioned clamping channel 321, which is coaxially connected to the clearance opening 3221. The clamping arm drive assembly 324 is mounted on the chuck 322 and drives the other end of each clamping arm 323 to rotate in a direction opposite to or towards the clearance opening 3221 to expand or shrink the clamping channel 321. Thus, the clamping arm drive assembly 324 and the clamping arms 323 work together to adjust the size of the clamping channel 321 to clamp long rods 6 of different diameters, making it widely applicable. Furthermore, each clamping arm 323 rotates synchronously, automatically centering itself while clamping the long rod 6, ensuring that the long rod 6 and the positioning hole 335 are on the same axis. In this embodiment, there are three clamping arms 323, which are evenly spaced in a ring, providing stable clamping for the long rod 6.

[0071] See Figure 4 As shown, in one embodiment of the clamping arm 323, the clamping arm drive assembly 324 includes: a telescopic drive rod 3241 and a ring block 3242. The ring block 3242 is sleeved on the chuck 322. One end of each clamping arm 323 is connected to the ring block 3242 via a rotating shaft A1 and to the chuck 322 via a rotating shaft A2. One end of the telescopic drive rod 3241 is fixedly connected to the ring block 3242, and the telescopic rod of the telescopic drive rod 3241 is fixedly connected to the side of the chuck 322. Thus, the telescopic rod of the telescopic drive rod 3241 extends and retracts, driving the chuck 322 to rotate relative to the ring block 3242. This, in turn, drives each clamping arm 323 to swing synchronously via the rotating shaft A2, thereby clamping the long rod 6 and automatically centering the long rod 6, ensuring that the long rod 6 in the clamping channel 321 is coaxially distributed with the positioning hole 335.

[0072] The aforementioned telescopic drive rod 3241 can use an electric telescopic rod or a hydraulic telescopic rod, etc., as a telescopic drive mechanism.

[0073] Each of the aforementioned clamping arms 323 has a roller 3231 rotatably connected to its other end via a pivot shaft, forming a clamping channel 321 between the rollers 3231. Thus, the clamping arms 323 clamp the long rod 6 via the rollers 3231. When the long rod 6 is rotated and ground, it drives the rollers 3231 to rotate as well, effectively reducing wear on the long rod 6 caused by the clamping arms 323. This prevents the long rod 6 from rotating and swinging within the clamping channel 321 due to wear, which would increase the radial runout of the long rod 6 at the machining station 11 and affect the machining accuracy of the long rod 6 at the machining station 11.

[0074] See Figure 2 and Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of the pressure block, pressure roller, and pressure roller drive in one embodiment. In one embodiment of the limiting component 4, the limiting component 4 includes a limiting block 43, a pressure block 44, a pressure roller 45, and a pressure roller drive 46. The limiting block 43 is slidably connected to the slide rail or guide rod of the frame 1 along a first direction, and the limiting block 43 has a limiting hole 42. The pressure block 44 is detachably connected to the frame 1 by means of screwing or snap-fit, and the pressure block 44 has a pressing groove 441. The pressure roller 45 is rotatably connected to the output end of the pressure roller drive 46 through a bearing, and a pressing channel 41 is formed between the pressure roller 45 and the pressing groove 441 of the pressure block 44. The pressure roller drive 46 is mounted on the frame 1 and is used to drive the pressure roller 45 to move toward the opening of the pressing groove 441 to press the long rod 6 tightly, and to make the long rod 6 coaxial with the clamp 3 in the pressing channel 41. For example, the long bar 6 can be coaxially distributed within the pressure channel 41 and the positioning hole 335 in the chuck 3. Thus, when the long bar 6 passes through the pressure channel 41, part of the long bar 6 is located inside the pressure groove 441, and the other part is located outside the pressure groove 441, abutting against the pressure roller 45. When the long bar 6 rotates and grinds, it drives the pressure roller 45 to rotate accordingly, effectively reducing the wear of the pressure roller 45 on the long bar 6 and preventing excessive wear from increasing the radial runout of the long bar 6 within the pressure channel 41. Furthermore, long bars 6 of different diameters can use pressure blocks 44 with different pressure groove 441 sizes to ensure that long bars 6 of different diameters can be located on the same axis as the chuck 3 within the pressure channel 41.

[0075] The aforementioned pressure roller drive component 46 can be a telescopic drive mechanism such as a telescopic cylinder or an electric telescopic rod, rotatably connected to the frame 1. The output end of the telescopic cylinder or electric telescopic rod is rotatably connected to one end of the swing arm 461, and the other end of the swing arm 461 is rotatably connected to the frame 1. The pressure roller 45 is rotatably connected to the swing arm 461. In this way, the extension and retraction of the pressure roller drive component 46 can drive the swing arm 461 and the pressure roller 45 to swing downward together, pressing the long rod 6 on the material groove 441. Alternatively, the aforementioned pressure roller drive component 46 can be a rotary drive mechanism such as a rotary cylinder or a rotary motor, screwed or welded to the frame 1, with the pressure roller 45 rotatably connected to the output end of the rotary cylinder or rotary motor. In this way, the rotation of the pressure roller drive component 46 can drive the pressure roller 45 to swing downward, pressing the long rod 6 on the material groove 441. The aforementioned pressure roller drive component 46 is not limited to the above two embodiments, as long as it can drive the pressure roller 45 to press downward toward the opening of the material groove 441.

[0076] See Figure 5 and Figure 6 As shown, Figure 6 for Figure 5The enlarged schematic diagram at point B shows that in one embodiment of the pressure block 44, the pressure block 44 is mounted on the slide rail or slide groove 443 of the frame 1 and can slide vertically along the slide rail or slide groove 443 to adjust the height of the pressure groove 441, thereby adjusting the axial height of the long bar 6 in the pressure channel 41. The pressure groove 441 is V-shaped. A fastener 442 is installed between the pressure block 44 and the frame 1 to fix the pressure block 44 and the frame 1. Thus, the V-shaped pressure groove 441 can be used to limit long bars 6 of different diameters with a small diameter difference. Therefore, when processing long bars 6 of different diameters with a small diameter difference, it is not necessary to replace the pressure block 44. Simply adjust the vertical position of the pressure block 44 to make the long bar 6 on the same axis in the pressure channel 41 as at the chuck 3, and then fix the pressure block 44 and the frame 1 with the fastener 442, greatly saving production costs.

[0077] The fastener 442 mentioned above can be used to screw the pressure block 44 and the frame 1.

[0078] The material of the pressing groove 441 of the pressing block 44 can be a wear-resistant material such as hard alloy steel to form a pressing groove 441 with wear resistance, effectively preventing the pressing groove 441 from being worn by the long rod 6, thereby improving the service life of the pressing block 44.

[0079] See Figure 2 and Figure 7 As shown, Figure 7 The diagram shows a radial cross-sectional view of the limiting block and locking fastener in the embodiment. Based on the embodiment where the limiting component 4 includes a limiting block 43, a pressure block 44, a pressure roller 45, and a pressure roller drive 46, the long bar processing machine tool further includes a locking fastener 81 and a tensioning drive 82. The locking fastener 81 is mounted on the limiting block 43 via a screw connection or sliding connection, and is used to lock the thin, flexible long bar 6 within the limiting hole 42. The tensioning drive 82 is mounted on the frame 1 and is connected to the limiting block 43 via a transmission connection, used to drive the limiting block 43 to slide along a first direction. Thus, when machining long bars 6 that are harder and less prone to bending, one end of the long bar 6 is inserted into the limiting hole 42 and pressed against the bottom wall of the limiting hole 42. The radial runout of the long bar 6 is limited by the limiting hole 42, which is adapted to the long bar 6. Conversely, when machining long bars 6 that are less hard and more prone to bending, one end of the thin, flexible long bar 6 is locked in the limiting hole 42 by the locking fastener 81. Then, the limiting block 43 is driven by the tensioning drive 82 to slide in the first direction away from the machining station 11, thus straightening the long bar 6 and limiting its runout. Therefore, this long bar machining machine can be used to machine long bars 6 of different hardnesses, effectively improving its applicability.

[0080] The aforementioned tensioning drive 82 can be a linear motor or an electric telescopic rod. The output end of the tensioning drive 82 can be directly connected to the limit block 43 by welding or screwing. In this way, the tensioning drive 82 can accurately drive the movement of the limit block 43.

[0081] The aforementioned locking fastener 81 can be threaded into the threaded hole 431 of the limiting block 43. In this way, the thin, flexible rod 6 can be tightly locked into the limiting hole 42 by manually screwing the locking fastener 81. Alternatively, one end of the locking fastener 81 can be slidably connected to the radial opening of the limiting block 43 along a radial direction of the limiting hole 42, and the other end can be connected to the output end of the locking drive (not shown in the figure) by welding or screwing. The locking drive can be a drive mechanism such as an electric telescopic rod or a telescopic cylinder, which can be fixedly installed on the limiting block 43. This can replace manual operation and drive the locking fastener 81 to slide into the limiting hole 42 to tightly lock the thin, flexible rod 6 into the limiting hole 42.

[0082] See Figure 2 As shown, based on the embodiment of the long bar processing machine tool that also includes a locking fastener 81 and a tensioning drive 82, the long bar processing machine tool further includes a removal drive 83. The removal drive 83 is slidably mounted on the frame 1 along a first direction, and the removal drive 83 is connected to the output end of the tensioning drive 82. The output end of the removal drive 83 is connected to the limiting block 43 by welding or screwing, etc., so that the limiting block 43 slides on the frame 1 via the removal drive 83. The removal drive 83 is used to drive the limiting block 43 to move in a direction perpendicular to the first direction. Thus, the long bar processing machine tool fixes the limiting block 43 and the long bar 6 with the locking fastener 81, and then drives the limiting block 43 to move away from the processing station 11 in a direction perpendicular to the first direction by the removal drive 83, so that the grinding cut long bar 6 segment can be moved out of the processing station 11, so that the remaining long bar 6 can be moved into the processing station 11 for further grinding and cutting without manual removal, which further improves production efficiency; after the long bar 6 segment is removed from the limiting hole 42, the removal drive 83 drives the limiting block 43 to return to its original position, so that the drive mechanism 5 can drive one end of the remaining long bar 6 to be inserted into the limiting hole 42 again.

[0083] The aforementioned removal drive component 83 can use a telescopic drive mechanism such as a telescopic cylinder or an electric telescopic rod.

[0084] See Figure 8 As shown, Figure 8The diagram shows a top view of the long bar processing machine tool in this embodiment. The machine tool also includes a detection component 91 and a detection drive component 92. The detection drive component 92 is mounted on the frame 1 by welding or screwing. The output end of the detection drive component 92 is connected to the detection component 91 by welding or screwing. The detection drive component 92 drives the detection component 91 to move in a direction perpendicular to the first direction. The detection component 91 is used to detect the degree of radial runout during the rotation of the long bar 6. Thus, before processing long bars 6 of different diameters each time, a standard long bar 6 (the standard long bar 6 is a standard-sized bar with the same diameter as the long bar 6 to be processed, which can be made of wear-resistant hard material) can be installed on the long bar processing machine in place of the long bar 6 to be processed. Then, the standard long bar 6 is driven to rotate, and at the same time, the detection drive 92 drives the detection component 91 to move towards the standard long bar 6 in a direction perpendicular to the first direction, so that the detection end of the detection component 91 contacts the outer wall of the standard long bar 6, thereby detecting the radial runout of the standard long bar 6. After each detection, the detection drive 92 drives the detection component 91 to move away from the standard long bar 6 and return to its original position. According to the detected radial runout value of the standard long bar 6, the position of the limit component 4 can be adjusted until the radial runout value of the standard long bar 6 reaches the required range. After adjustment, the standard long bar 6 can be replaced with the long bar 6 to be processed, effectively avoiding damage to the long bar 6 to be processed during the detection process. It can be seen that the long bar processing machine tool can replace manual labor by detecting the radial runout of the bar material through the detection component 91 and the detection drive component 92, so as to adjust the position of the limit component 4 before processing the long bar 6, and ensure that the radial runout of the long bar 6 during the processing can reach the required range, thereby ensuring that the processing accuracy of the long bar 6 can meet the accuracy requirements.

[0085] The aforementioned detection component 91 can use a dial indicator to detect the radial runout of the cylinder. The aforementioned detection drive component 92 can use a linear drive mechanism such as an electric telescopic rod or an electric cylinder, and is set near the machining station 11 so that the detection component 91 can detect the degree of radial runout of the long rod 6 near the machining station 11. The closer the detection position of the detection component 91 is to the machining station 11, the more accurate the detection result.

[0086] See Figure 1 , Figure 8 and Figure 9 As shown, Figure 9 for Figure 8The enlarged schematic diagram at point C shows that in one embodiment of the grinding and cutting mechanism 2, the grinding and cutting mechanism 2 includes a coarse grinding wheel 21, a fine grinding wheel 22, a grinding drive 23, a cutter (not shown in the figure), and a cutter drive (not shown in the figure). There are two grinding drive 23s, which are mounted on the frame 1. The two grinding drive 23s are respectively connected to the coarse grinding wheel 21 and the fine grinding wheel 22, and are used to drive the coarse grinding wheel 21 and the fine grinding wheel 22 to move toward the long rod 6 at the processing station 11 for coarse and fine grinding of the long rod 6. The cutter drive is mounted on the frame 1 and is connected to the cutter for driving the cutter to move toward the processing station 11 to cut off the ground portion of the long rod 6. Thus, during the grinding process, firstly, the two grinding drive units 23 drive the coarse grinding wheel 21 and the fine grinding wheel 22 to move into the processing station 11 one after another, contact the long bar 6 at the processing station 11 and perform grinding. During the grinding process, the drive mechanism 5 drives the long bar 6 to move towards the processing station 11 for conveying, so that the coarsely ground part of the long bar 6 can be transferred to the fine grinding wheel 22 for fine grinding, realizing the simultaneous coarse and fine grinding of the long bar 6, effectively improving the grinding efficiency of the long bar 6. Then, the two grinding drive units 23 drive the coarse grinding wheel 21 and the fine grinding wheel 22 to move out of the processing station 11 one after another. The fine grinding wheel 22 always moves later than the coarse grinding wheel 21 for a period of time to ensure that the entire coarsely ground part is finely ground before withdrawing from the processing station 11. Finally, the cutter drive unit drives the cutter to cut off the long bar 6, automatically cutting off the ground part of the long bar 6 and returning to the original position.

[0087] The aforementioned grinding drive 23 can be a rotary stepper motor. The output end of the grinding drive 23 is fixedly connected to the coarse grinding wheel 21 or the fine grinding wheel 22 by means of integral connection or welding. In this way, the grinding drive 23 can drive the coarse grinding wheel 21 or the fine grinding wheel 22 to rotate and move into or out of the processing station 11. Both the coarse grinding wheel 21 and the fine grinding wheel 22 can be grinding wheels. The aforementioned cutting drive can be a telescopic cylinder, an electric telescopic rod, or a hydraulic cylinder. The output end of the cutting drive is fixedly connected to the cutting tool by means of integral connection or welding. In this way, the cutting drive can drive the cutting tool to move into or out of the processing station 11.

[0088] 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 long bar processing machine tool, characterized in that, include: A machine frame, on which processing stations are provided; A grinding and cutting mechanism is located at the processing station of the machine frame and is used for grinding and cutting long bars; A chuck is slidably disposed on the frame and arranged along a first direction with the processing station; the chuck is used to clamp or release the long bar. A drive mechanism is mounted on the frame and is connected to the chuck in a transmission manner. The drive mechanism is used to drive the chuck to slide back and forth along the first direction. A limiting component is provided on the frame and has a connecting pressing channel and a limiting hole. The pressing channel is located between the processing station and the chuck and is used for the long bar to pass through. The limiting hole is located on the side of the processing station away from the pressing channel and is used for one end of the long bar to be inserted. The chuck includes: a slide block, which is slidably disposed on the frame along the first direction; A positioning clamp and a clamping tube are arranged on the slide along the first direction, and the clamping tube is located between the positioning clamp and the pressing channel. The positioning clamp is used to clamp or release the long bar and is provided with a clamping channel. The clamping tube includes a guide tube and at least two elastic clamping arms. The guide tube extends along the first direction, and the feed end of the guide tube is connected to the clamping channel. The guide tube is used for the long bar to pass through. At least two elastic clamping arms are connected in a ring-shaped interval around the axis of the guide tube to the discharge end of the guide tube and form a positioning hole that is interference-fitted with the long bar. The positioning hole is coaxial with the clamping channel, and the elastic clamping arms can deform. The clamping tube also includes an outer tube. The guide tube is fixed inside the outer tube, and the elastic clamping arms are disposed inside the outer tube. A deformation space is formed between the elastic clamping arms and the inner peripheral wall of the outer tube. The positioning fixture includes: a chuck with a clearance opening in the middle for the long rod to pass through; at least two clamping arms and a clamping arm drive assembly, wherein the at least two clamping arms are rotatably connected to the chuck at even intervals around the clearance opening, one end of each clamping arm is driveably connected to the clamping arm drive assembly, and the other ends form a clamping channel coaxially connected to the clearance opening; the clamping arm drive assembly is disposed on the chuck and is used to drive the other end of each clamping arm to rotate away from or towards the axis of the clearance opening, so as to expand or shrink the clamping channel; The limiting component includes: a limiting block, which is slidably disposed on the frame along the first direction and is provided with the limiting hole; The pressure block is detachably mounted on the frame and is equipped with a pressure groove; The pressure roller and the pressure roller drive are provided. The pressure roller is rotatably mounted on the output end of the pressure roller drive. The pressure roller forms the pressure channel with the pressure groove of the pressure block. The pressure roller drive is mounted on the frame and is used to drive the pressure roller to move toward the opening of the pressure groove to press the long rod tightly and make the long rod coaxial with the clamp in the pressure channel.

2. The long bar processing machine tool according to claim 1, characterized in that, The clamping arm drive assembly includes: A ring block is sleeved on the chuck, and one end of each clamping arm is connected to the ring block via a rotating shaft and to the chuck via a rotating shaft. A telescopic drive rod is provided, one end of which is fixedly connected to the ring block, and the telescopic rod of which is fixedly connected to the side of the chuck, for driving the chuck to rotate relative to the ring block.

3. The long bar processing machine tool according to claim 1, characterized in that, The pressure block can be slidably mounted on the frame along the vertical direction. The pressure groove is V-shaped, and fasteners are provided between the pressure block and the frame to fix the pressure block and the frame.

4. The long bar processing machine tool according to claim 1, characterized in that, The long bar processing machine tool also includes: A locking device is provided on the limiting block, and the locking device is used to lock the thin, soft, long rod in the limiting hole. A tensioning drive is mounted on the frame and is connected to the limiting block in a transmission manner. The tensioning drive is used to drive the limiting block to slide along the first direction.

5. The long bar processing machine tool according to claim 4, characterized in that, The long bar processing machine tool further includes: a removal drive member, which is slidably disposed on the frame along the first direction and connected to the output end of the tension drive member. The output end of the removal drive member is connected to the limiting block and is used to drive the limiting block to move along a direction perpendicular to the first direction.

6. The long bar machining tool according to any one of claims 1-5, characterized in that, The long bar processing machine tool further includes: a detection component and a detection drive component, wherein the detection drive component is disposed on the machine frame and is connected to the detection component in a transmission manner; The detection drive is used to drive the detection element to move in a direction perpendicular to the first direction, and the detection element is used to detect the degree of radial runout during the rotation of the long rod.

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