A cylindrical grinder for processing a rotating shaft

Abstract

The application provides a cylindrical grinding machine for rotating shaft machining. It relates to the technical field of machining equipment. The cylindrical grinding machine for rotating shaft machining comprises an equipment base, a first double-side support is arranged above the equipment base, a first horizontal lead screw is rotatably arranged in the first double-side support, a horizontal sliding block is threadedly arranged on the first horizontal lead screw, a connecting plate is fixedly arranged at the bottom of the horizontal sliding block, a first vertical plate is arranged below the connecting plate, a second double-side support is fixedly arranged at the bottom of the connecting plate, a second horizontal lead screw is rotatably arranged in the second double-side support, a second vertical plate is threadedly arranged on the second horizontal lead screw, and a steering shaft is rotatably arranged on the first vertical plate and the second vertical plate. The application has the advantages of forming through-body grinding on the rotating shaft at one time, improving the grinding efficiency, quickly replacing the grinding wheel, and greatly shortening the downtime.

Description

Technical Field

[0001] This invention relates to the field of machining equipment technology, specifically to an external cylindrical grinding machine for machining shafts. Background Technology

[0002] Shafts are core components in mechanical equipment and are widely used in motors, machine tools, automobiles and other fields. The machining accuracy of their outer cylindrical surface directly affects the operational stability and service life of the equipment. As a key piece of equipment for machining the outer cylindrical surface of shafts, the cylindrical grinding machine grinds the surface of the shaft by rotating the grinding wheel to achieve the required dimensional accuracy and surface roughness.

[0003] However, some existing cylindrical grinding machines, when machining shafts, typically use chucks to clamp and fix the shaft, resulting in a portion of the shaft being surrounded by the chucks. During grinding, the part that should be in contact with the chucks cannot be ground, and subsequent repositioning and grinding are required, making it difficult to achieve one-time full-body grinding and reducing grinding efficiency. Furthermore, during the grinding process, when the grinding wheel is severely worn and needs to be replaced, the machine must be stopped first, and then the old grinding wheel must be removed and replaced. The entire downtime is relatively long, making it difficult to adapt to the production of batch shafts.

[0004] Therefore, it is necessary to provide a new cylindrical grinding machine for machining shafts to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide an external cylindrical grinding machine for machining shafts that can perform full-body grinding on a rotating shaft in one pass, improve grinding efficiency, and allow for quick wheel replacement, thereby significantly reducing downtime.

[0006] To solve the above-mentioned technical problems, the present invention provides an external cylindrical grinding machine for machining a rotating shaft, comprising: a machine base, a first double-sided support above the machine base, a first transverse lead screw rotatably mounted inside the first double-sided support, a transverse slider threaded onto the first transverse lead screw, a connecting plate fixedly mounted at the bottom of the transverse slider, a first vertical plate below the connecting plate, and a second double-sided support fixedly mounted at the bottom of the connecting plate, a second transverse lead screw rotatably mounted inside the second double-sided support, a second vertical plate threaded onto the second transverse lead screw, a steering shaft rotatably mounted on both the first and second vertical plates, and a clamping mechanism at the ends of the two steering shafts that are close to each other; a pre-clamping mechanism on the machine base for clamping the rotating shaft to be processed; a bearing baffle plate above the machine base, a grinding mechanism and a grinding wheel replacement mechanism on the bearing baffle plate; the grinding mechanism for grinding the rotating shaft, and the grinding wheel replacement mechanism for replacing the old grinding wheel; and a feed mechanism on the machine base connected to the bearing baffle plate.

[0007] Furthermore, the top of the first vertical plate is fixedly connected to the connecting plate.

[0008] Furthermore, two fixed folding brackets are fixedly installed on the top of the equipment base. The top of the first double-sided support is fixedly connected to the two fixed folding brackets. A first reduction motor is fixedly installed on one outer wall of the first double-sided support. The output shaft of the first reduction motor is fixedly connected to one end of the first transverse lead screw. A second reduction motor is fixedly installed on one outer wall of the second double-sided support. The output shaft of the second reduction motor is fixedly connected to one end of the second transverse lead screw. The top of the transverse slider contacts the top inner wall of the first double-sided support. The top of the second vertical plate contacts the top inner wall of the second double-sided support. A first clearance opening is provided on the fixed folding bracket near the first vertical plate. The first vertical plate is adapted to the first clearance opening. A third reduction motor is fixedly installed on the first vertical plate. Gears are fixedly sleeved on the output shaft and the corresponding steering shaft of the third reduction motor. The two gears mesh with each other.

[0009] Furthermore, each clamping mechanism includes a concave housing, which is fixedly installed at one end of the steering shaft. A connecting shaft is rotatably installed inside the concave housing, and a first clamping head and a second clamping head are fixedly installed on the connecting shaft. The first clamping head and the second clamping head are symmetrically distributed, and both the first clamping head and the second clamping head are tapered. The tapered end of the first clamping head is rounded, and the tapered end of the second clamping head is flat.

[0010] Furthermore, the pre-clamping mechanism includes a connecting vertical plate, which is fixedly installed on the top of the equipment base. A first single-axis cylinder is fixedly installed on one side of the connecting vertical plate. The output shaft of the first single-axis cylinder passes through the connecting vertical plate and is slidably connected to it. A third double-sided bracket is fixedly installed on the output shaft of the first single-axis cylinder. A first double-sided screw is rotatably installed inside the third double-sided bracket. Two clamps are threaded onto the first double-sided screw. The sides of the two clamps that are close to each other are designed with arc grooves, and multiple balls are embedded in the arc grooves. A fourth reduction motor is fixedly installed on the top of the third double-sided bracket. The output shaft of the fourth reduction motor is fixedly connected to the top of the first double-sided screw. The clamps are close to the clamping mechanism on the first vertical plate.

[0011] Furthermore, the grinding mechanism includes a convex platform, which is fixedly installed on one side of the bearing plate. A bearing shaft is rotatably mounted on the convex platform. A fifth reduction motor is fixedly mounted on one side of the convex platform. The output shaft of the fifth reduction motor is fixedly connected to one end of the bearing shaft. Two symmetrically arranged connecting blocks are fixedly mounted on the bearing shaft. A loading box is fixedly mounted on the side of each of the two connecting blocks that is far apart from each other. A second bidirectional lead screw is rotatably mounted in each of the two loading boxes. Two moving strips are threaded onto each of the two second bidirectional lead screws. The four moving strips extend to the outside of their respective loading boxes and are slidably connected to them. A drive shaft is rotatably mounted on the two moving strips that are far from the convex platform, and a driven shaft is rotatably mounted on the two moving strips that are close to the convex platform. A dual-axis cylinder is fixed on the two moving strips that are close to the convex platform. A dual-axis cylinder is fixed on the output shaft of each of the two dual-axis cylinders. The grinding mechanism is fixedly installed with arc-shaped brake pads. The inner walls of the two arc-shaped brake pads abut against the two driven shafts respectively, forming a braking and anti-rotation effect. Square clamping blocks are fixedly installed at the ends of the two driving shafts and the two driven shafts that are close to each other. Grinding wheels are provided between the corresponding driving shafts and driven shafts. T-bone connectors are fixedly installed on both sides of the two grinding wheels. Square countersunk grooves are opened on the opposite sides of the two corresponding T-bone connectors. The four square clamping blocks are respectively inserted into the four square countersunk grooves. Sixth reduction motors are fixedly installed on the outer walls of the two containers that are away from the convex platform. The output shafts of the two sixth reduction motors are fixedly connected to one end of the two second bidirectional lead screws respectively. First rotary motors are fixedly installed on the two moving bars that are away from the convex platform. The output shafts of the two first rotary motors are fixedly connected to one end of the two driving shafts respectively. The grinding mechanism is located on one side of the clamping mechanism on the first vertical plate.

[0012] Furthermore, the grinding wheel changing mechanism includes a first rodless cylinder, which is fixedly installed on the side of the bearing baffle away from the bearing shaft. An installation strip is fixedly installed on the slider of the first rodless cylinder, penetrating the bearing baffle and slidably connected to it. A support plate is fixedly installed on the top of the installation strip, located below the grinding wheel near the bearing baffle. Two U-shaped limiting frames are fixedly installed on the top of the support plate, with the internal width of each U-shaped limiting frame matching the corresponding square clamping block. A second rodless cylinder is fixedly installed on the side of the bearing baffle near the bearing shaft, and a storage rectangular sleeve is fixedly installed on the slider of the second rodless cylinder, located within the U-shaped limiting frames. Directly above, two T-shaped slides are provided on the top of the storage rectangular sleeve. The T-shaped slides are adapted to the T-bone connector. Two second single-axis cylinders are fixedly installed on one outer wall of the storage rectangular sleeve. A first locking rod is fixedly installed on the output shaft of the lower second single-axis cylinder, and a second locking rod is fixedly installed on the output shaft of the upper second single-axis cylinder. Two shuttle holes are provided on the side of the storage rectangular sleeve near the second single-axis cylinder. Both shuttle holes are connected to the corresponding T-shaped slides. The first locking rod and the second locking rod are adapted to the two shuttle holes respectively. The output shaft of the lower second single-axis cylinder is in the extended state. The first locking rod passes through the corresponding shuttle hole and extends into the corresponding T-shaped slide.

[0013] Furthermore, the feeding mechanism includes two connecting plates, both of which are fixedly installed on the top of the equipment base. The same feeding screw is rotatably installed on the two connecting plates. A feeding slider is threaded onto the feeding screw. The top of the feeding slider is fixedly connected to the bearing plate. An anti-slip knob is fixedly installed at one end of the feeding screw. A support plate is fixedly installed on the connecting plate near the anti-slip knob. A set screw is threaded onto the support plate. The end of the set screw abuts against the feeding screw.

[0014] Furthermore, one end of each of the two connecting shafts extends to the outside of the corresponding concave housing and is fixedly mounted with a turntable. Each of the two turntables has a positioning hole. Each of the two concave housings has a mounting bracket fixedly mounted on one side of its outer wall. Each of the two mounting brackets has a fastening screw threaded onto the side away from the concave housing. Each of the two fastening screws has a linkage bar rotatably mounted on it. Each of the two linkage bars passes through the corresponding mounting bracket and is slidably connected to the corresponding mounting bracket. Each of the two linkage bars has two positioning heads fixedly mounted on the side near the concave housing. Each of the four positioning heads passes through the corresponding positioning hole.

[0015] Furthermore, the first vertical plate is slidably connected to the connecting plate, and a third single-axis cylinder is fixedly installed at the bottom of the connecting plate. The output shaft of the third single-axis cylinder is fixedly connected to the first vertical plate. The same third transverse lead screw is rotatably installed on the side of the two fixed folding frames that are close to each other. A seventh reduction motor is fixedly installed on the fixed folding frame close to the first vertical plate. The output shaft of the seventh reduction motor is fixedly connected to one end of the third transverse lead screw. A moving block is threaded onto the third transverse lead screw. A third rodless cylinder is fixedly installed on the top of the moving block. A hollow adapter block is fixedly installed on the slider of the third rodless cylinder. The bottom and the side away from the third rodless cylinder of the hollow adapter block are both open. A central shaft is rotatably installed inside the hollow adapter block. A second rotating... The motor, the output shaft of the second rotary motor is fixedly connected to one end of the central shaft, the central shaft is fixedly fitted with an adapter, one side of the adapter extends to the outside of the hollow adapter block and is fixedly installed with a support bar, the top of the support bar is fixedly installed with a fourth double-sided bracket, the inner walls of both sides of the fourth double-sided bracket are fixedly installed with a fourth single-axis cylinder, the output shafts of the two fourth single-axis cylinders are fixedly installed with push-pull plates, the tops of the two push-pull plates are fixedly installed with clamping plates, the sides of the two clamping plates that are close to each other are provided with arc-shaped clamping grooves, the clamping plates are close to the clamping seat, the fixed folding frame near the second vertical plate is provided with a second clearance opening, the second clearance opening is adapted to the fourth double-sided bracket, the equipment base is fixedly installed with two baffles on the side near the second vertical plate, and the two baffles are provided with belt conveyor units.

[0016] Compared with related technologies, the external cylindrical grinding machine for machining shafts provided by the present invention has the following beneficial effects:

[0017] I. This invention pre-stores multiple new grinding wheels in a rectangular storage sleeve. When the grinding wheel in use needs to be replaced due to severe wear, the fifth reduction motor is started in the forward direction, driving the bearing shaft to rotate and realizing the position exchange of the two carrying boxes, so that the new grinding wheel can be put into use quickly. On the other hand, the old grinding wheel is replaced synchronously through the grinding wheel replacement mechanism, which greatly improves the convenience of grinding wheel replacement. Thus, the old grinding wheel can be replaced quickly without the need for long-term machine downtime and complicated grinding wheel replacement operations, which significantly improves the efficiency of shaft processing.

[0018] Second, for hollow and solid shafts, this invention provides a switchable first clamping head and a second clamping head. When machining hollow shafts, the design of the first clamping head can reliably clamp and position them. When machining solid shafts, the second clamping head with a flat head can reliably clamp and position them. This switchable clamping head design greatly improves the equipment's versatility for different types of shafts, eliminating the need for multiple dedicated machines for different types of shafts and reducing production costs.

[0019] Third, by setting a first clamping head and a second clamping head for clamping and positioning from the side of the shaft, the present invention can ensure that the outer circle of the shaft is not obstructed by any foreign object after it is fixed, and can perform full grinding on the outer circle in one go, which greatly improves the grinding efficiency. Attached Figure Description

[0020] Figure 1 This is a front view schematic diagram of the first embodiment of the cylindrical grinding machine for machining shafts provided by the present invention;

[0021] Figure 2 A rear view schematic diagram of the first embodiment of the external cylindrical grinding machine for machining shafts provided by the present invention;

[0022] Figure 3 A schematic diagram of the assembly structure of the first double-sided support and the second double-sided support in the first embodiment of the external cylindrical grinding machine for shaft machining provided by the present invention;

[0023] Figure 4 A schematic diagram of the disassembled state of the concave housing and mounting bracket in the first embodiment of the external cylindrical grinding machine for machining the rotating shaft provided by the present invention;

[0024] Figure 5 A schematic diagram showing the connection between the clamp and the first bidirectional lead screw in the first embodiment of the external cylindrical grinding machine for machining the rotating shaft provided by the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the bearing plate in the first embodiment of the external cylindrical grinding machine for machining shafts provided by the present invention;

[0026] Figure 7 A schematic diagram showing the connection between the feed screw and the feed slide in the first embodiment of the external cylindrical grinding machine for machining the rotating shaft provided by the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the U-shaped limiting frame in the first embodiment of the external cylindrical grinding machine for machining the rotating shaft provided by the present invention;

[0028] Figure 9 A schematic diagram of the connection structure between the bearing shaft and the workpiece box in the first embodiment of the external cylindrical grinding machine for shaft machining provided by the present invention;

[0029] Figure 10A schematic diagram of the disassembled state of the square clamping block and the T-bone connector in the first embodiment of the external cylindrical grinding machine for machining the rotating shaft provided by the present invention;

[0030] Figure 11 A cross-sectional view of the loading box in the first embodiment of the external cylindrical grinding machine for machining the rotating shaft provided by the present invention;

[0031] Figure 12 This is a cross-sectional view of the rectangular sleeve for storing materials in the first embodiment of the external cylindrical grinding machine for machining the rotating shaft provided by the present invention.

[0032] Figure 13 This is a front view schematic diagram of a second embodiment of the external cylindrical grinding machine for machining shafts provided by the present invention;

[0033] Figure 14 This is a schematic diagram of the installation of the third single-axis cylinder in the second embodiment of the external cylindrical grinding machine for machining the rotating shaft provided by the present invention;

[0034] Figure 15 A schematic diagram of the disassembled state of the connecting plate and the first vertical plate in the second embodiment of the external cylindrical grinding machine for machining the rotating shaft provided by the present invention;

[0035] Figure 16 A schematic diagram of the connection structure between the hollow adapter block and the adapter in the second embodiment of the external cylindrical grinding machine for machining the rotating shaft provided by the present invention;

[0036] Figure 17 This is a schematic diagram of the installation structure of the third transverse lead screw in the second embodiment of the external cylindrical grinding machine for machining the rotating shaft provided by the present invention.

[0037] Labels in the diagram: 1. Equipment base; 2. First double-sided support; 3. First transverse lead screw; 4. Transverse slider; 5. Connecting plate; 6. First vertical plate; 7. Second double-sided support; 8. Second transverse lead screw; 9. Second vertical plate; 10. Steering shaft; 11. Concave housing; 1101. Connecting shaft; 1102. First clamping head; 1103. Second clamping head; 12. Connecting vertical plate; 13. First single-axis cylinder; 1301. Third double-sided support; 1302. First double-sided lead screw; 1303. Clamping seat; 14. Bearing folding plate; 15. Convex joint; 16. Bearing shaft; 17. Connecting block; 18. Loading box; 1801. Second double-sided lead screw; 1802. Moving bar; 1803. Drive shaft; 1804. Passive shaft; 1805. Square clamping block; 19. Grinding wheel; 1901. T-bone connector. ; 1902, Square settling tank; 20, Connecting plate; 21, Feed screw; 22, Feed slider; 23, First rodless cylinder; 24, Support plate; 25, U-shaped limit frame; 26, Second rodless cylinder; 27, Rectangular storage sleeve; 28, T-shaped slide rail; 29, Second single-axis cylinder; 30, First locking rod; 31, Second locking rod; 32, Mounting bracket; 3201, Turntable; 3202, Positioning hole; 3203. Fastening screw; 3204. Linkage bar; 3205. Positioning head; 33. Third single-axis cylinder; 34. Third transverse lead screw; 35. Moving block; 36. Third rodless cylinder; 37. Hollow adapter block; 38. Adapter; 39. Support bar; 40. Fourth double-sided bracket; 41. Fourth single-axis cylinder; 42. Push-pull plate; 43. Clamping plate; 44. Baffle plate; 45. Belt conveyor unit. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] First embodiment:

[0040] Please refer to the following: Figures 1-12The external cylindrical grinding machine for shaft machining includes: a machine base 1, on the top of which two fixed folding frames are fixedly installed. A first double-sided support 2 is fixedly installed on the inner top wall of the two fixed folding frames, and a first transverse lead screw 3 is rotatably installed within it. A first geared motor is fixedly installed on one outer wall of the first double-sided support 2, and its output shaft is fixedly connected to one end of the first transverse lead screw 3. A transverse slider 4 is threaded onto the first transverse lead screw 3, and the top of the transverse slider 4 contacts the inner top wall of the first double-sided support 2. To reduce the pressure on the first transverse lead screw... The load-bearing capacity of lever 3 is achieved by fixing two first single levers inside the first double-sided bracket 2. These two first single levers pass through and are slidably connected to the transverse slider 4. A connecting plate 5 is fixedly installed at the bottom of the transverse slider 4, and a first vertical plate 6 is fixedly installed at the bottom of the connecting plate 5. A second double-sided bracket 7 is fixedly installed at the bottom of the connecting plate 5, and a second transverse lead screw 8 is rotatably installed inside it. A second reduction motor is fixedly installed on one outer wall of the second double-sided bracket 7, and its output shaft is fixedly connected to one end of the second transverse lead screw 8. A second vertical plate 9 is threaded onto the second transverse lead screw 8. The top of the second vertical plate 9 contacts the top inner wall of the second double-sided support 7. To reduce the load on the second transverse lead screw 8, two second single bars are fixed inside the second double-sided support 7. Both second single bars pass through and are slidably connected to the second vertical plate 9. Steering shafts 10 are rotatably mounted on both the first vertical plate 6 and the second vertical plate 9. Clamping mechanisms are provided at the ends of the two steering shafts 10 that are close to each other to position and clamp the rotating shafts. To drive the steering shafts 10 and the positioned rotating shafts to rotate, a third reduction motor is fixedly mounted on the first vertical plate 6. Its output shaft and... Gears are fixedly fitted on each of the corresponding steering shafts 10, and the two gears mesh with each other; and a pre-clamping mechanism is provided on the equipment base 1, which can pre-clamp the shaft to be processed, so as to facilitate the connection between the shaft and the clamping mechanism. A bearing baffle 14 is provided above the equipment base 1, on which a grinding mechanism and a grinding wheel replacement mechanism are provided. The grinding mechanism is used to grind the shaft, and the grinding wheel replacement mechanism is used to replace the old grinding wheel 19. In addition, a feed mechanism is provided on the equipment base 1, which is connected to the bearing baffle 14 and is used to adjust the grinding feed of the grinding mechanism.

[0041] In this embodiment, in order to prevent the fixed folding frame from obstructing the movement of the connecting plate 5, a first clearance opening is provided on the fixed folding frame near the first vertical plate 6, and the first vertical plate 6 is adapted to the first clearance opening.

[0042] In this embodiment, each of the clamping mechanisms mentioned above includes a concave housing 11, which is fixedly installed at one end of the steering shaft 10. A connecting shaft 1101 is rotatably installed inside the concave housing 11. A first clamping head 1102 and a second clamping head 1103 are fixedly installed on the connecting shaft 1101. The first clamping head 1102 and the second clamping head 1103 are symmetrically distributed and both have a tapered design. The tapered end of the first clamping head 1102 has a rounded end and is used for positioning and clamping hollow rotating shafts. The tapered end of the second clamping head 1103 has a flat end and is used for positioning and clamping solid rotating shafts. The appropriate clamping head can be selected and used according to actual needs.

[0043] In this embodiment, the aforementioned pre-clamping mechanism includes a connecting vertical plate 12 fixedly installed on the top of the equipment base 1. A first single-axis cylinder 13 is fixedly installed on one side of the connecting vertical plate 12, and its output shaft passes through the connecting vertical plate 12 and is slidably connected to the connecting vertical plate 12. A third double-sided bracket 1301 is fixedly installed on the output shaft of the first single-axis cylinder 13, and a first double-sided lead screw 1302 is rotatably installed inside it. Two clamps 1303 are threaded on the first double-sided lead screw 1302. The sides of the two clamps 1303 that are close to each other are designed with arc grooves, and multiple balls are embedded in the arc grooves to ensure that the rotating shaft is pre-clamped. After being held, it can be pushed by the first clamping head 1102 or the second clamping head 1103 on the second vertical plate 9. A fourth reduction motor is fixedly installed on the top of the third double-sided bracket 1301, and its output shaft is fixedly connected to the top of the first double-sided lead screw 1302. In order to ensure that the clamping seat 1303 can perform stable linear motion, two columns are fixed inside the third double-sided bracket 1301. The two columns pass through the two clamping seats 1303 and are slidably connected to them. The clamping seats 1303 are set close to the clamping mechanism on the first vertical plate 6. This can ensure that various lengths of rotating shafts can be clamped and ground to the greatest extent.

[0044] In this embodiment, the aforementioned grinding mechanism includes a protruding platform 15 fixedly installed on one side of the bearing plate 14, and a bearing shaft 16 rotatably mounted on the protruding platform 15. A fifth reduction motor is fixedly mounted on one side of the protruding platform 15, and its output shaft is fixedly connected to one end of the bearing shaft 16. Two symmetrically arranged connecting blocks 17 are fixedly mounted on the bearing shaft 16. A loading box 18 is fixedly mounted on the side of the two connecting blocks 17 that is far away from each other. A second bidirectional lead screw 1801 is rotatably mounted inside each of the two loading boxes 18, and a sixth reduction motor is fixedly mounted on the outer wall of the side of the two loading boxes 18 that is far away from the protruding platform 15. The output shafts of the two sixth reduction motors are respectively connected to the two second bidirectional lead screws 1801. One end of 01 is fixedly connected, and two moving strips 1802 are threadedly installed on each of the two second bidirectional lead screws 1801, forming four moving strips 1802. Two sliding openings are opened on the opposite sides of the two storage boxes 18. The four moving strips 1802 pass through the four sliding openings respectively, and each of the four moving strips 1802 is in contact with the inner wall of the four sliding openings, thus creating a linear sliding effect. Furthermore, sealing plates are fixedly fitted onto each of the four moving strips 1802. Each of the four sealing plates contacts the corresponding storage box 18, and the outer diameter of each sealing plate is larger than the inner diameter of the corresponding sliding opening. This ensures that the sliding openings are always covered during the movement of the moving strips 1802, thereby preventing a large amount of dust. Inside the cargo box 18, drive shafts 1803 are rotatably mounted on two moving strips 1802 away from the convex platform 15, and driven shafts 1804 are rotatably mounted on two moving strips 1802 near the convex platform 15. Furthermore, dual-shaft cylinders are fixed to the two moving strips 1802 near the convex platform 15. Arc-shaped brake pads are fixedly mounted on the output shafts of both dual-shaft cylinders. Initially, the output shafts of both dual-shaft cylinders are extended, causing the inner walls of the two arc-shaped brake pads to abut against the two driven shafts 1804, creating a braking and anti-rotation effect. Square clamping blocks 1805 are fixedly mounted on the ends of the two drive shafts 1803 and the two driven shafts 1804 that are close to each other. A grinding wheel 19 is provided between the corresponding active shaft 1803 and passive shaft 1804. T-bone connectors 1901 are fixedly installed on both sides of the two grinding wheels 19. Square grooves 1902 are opened on the opposite sides of the two T-bone connectors 1901. Four square clamping blocks 1805 are inserted into the four square grooves 1902 respectively. First rotary motors are fixedly installed on the two moving bars 1802 away from the convex platform 15. The output shafts of the two first rotary motors are fixedly connected to one end of the two active shafts 1803 respectively. The grinding mechanism is located on one side of the clamping mechanism on the first vertical plate 6, so that the grinding wheel 19 can perform grinding work from the starting position of the rotating shaft.

[0045] In this embodiment, the aforementioned grinding wheel replacement mechanism includes a first rodless cylinder 23 fixedly installed on the side of the bearing baffle 14 away from the bearing shaft 16. An installation strip is fixedly installed on the slider of the first rodless cylinder 23. The installation strip passes through the bearing baffle 14 and is slidably connected to the bearing baffle 14. A support plate 24 is fixedly installed on the top of the installation strip. The support plate 24 is located below the grinding wheel 19 near the bearing baffle 14. Two U-shaped limiting frames 25 are fixedly installed on the top of the support plate 24. The internal width of the two U-shaped limiting frames 25 is adapted to the corresponding square clamping block 1805. This allows the square clamping block 1805 to be locked into the U-shaped limiting frame 25, securing it and facilitating the replacement of the old grinding wheel 19. Furthermore, a rubber protective pad is provided on the support plate 24 between the two U-shaped limiting frames 25 to provide impact protection against falling new grinding wheels 19. A second rodless cylinder 26 is fixedly installed on the side of the bearing plate 14 near the bearing shaft 16, and a storage rectangular sleeve 27 is fixedly installed on its built-in slider. The storage rectangular sleeve 27 is located directly above the U-shaped limiting frame 25, and two T-shaped slides 28 are provided on the top of the storage rectangular sleeve 27. 8 is compatible with the T-shaped connector 1901 and can pre-store multiple new grinding wheels 19 inside. Two second single-axis cylinders 29 are fixedly installed on one outer wall of the storage rectangular sleeve 27. A first locking rod 30 is fixedly installed on the output shaft of the lower second single-axis cylinder 29, and a second locking rod 31 is fixedly installed on the output shaft of the upper second single-axis cylinder 29. Two shuttle holes are opened on the side of the storage rectangular sleeve 27 near the second single-axis cylinder 29. Both shuttle holes are connected to the corresponding T-shaped slides 28. The first locking rod 30 and the second locking rod 31 are respectively adapted to the two shuttle holes. The output shaft of the second single-axis cylinder 29 located below is extended. The first locking rod 30 passes through the corresponding shuttle hole and extends into the corresponding T-shaped slide 28. The first locking rod 30 can be used to limit the bottom new grinding wheel 19 to prevent it from falling. At the same time, when replacing the new grinding wheel 19 in the future, through the cooperation of the output shafts of the two second single-axis cylinders 29, the second locking rod 31 can be used to lock and limit the grinding wheels 19 except for the bottom new grinding wheel 19. The bottom new grinding wheel 19 will then enter the U-shaped limit frame 25, and the next replacement operation can be carried out smoothly.

[0046] In this embodiment, the aforementioned feeding mechanism includes two connecting plates 20, both fixedly mounted on the top of the equipment base 1. The same feed screw 21 is rotatably mounted on the two connecting plates 20. A feed slider 22 is threadedly mounted on the feed screw 21. The bottom of the feed slider 22 is in contact with the top of the equipment base 1, and the top of the feed slider 22 is fixedly connected to the bearing folding plate 14. An anti-slip knob is fixedly mounted on one end of the feed screw 21. A support plate is fixedly mounted on the connecting plate 20 near the anti-slip knob. A set screw is threadedly mounted on the support plate. The end of the set screw abuts against the feed screw 21. By rotating the anti-slip knob, the grinding feed of the grinding wheel 19 can be adjusted by the cooperation between the feed screw 21 and the feed slider 22. The set screw provides a stabilizing effect.

[0047] In this embodiment, in order to stably and quickly select the first clamping head 1102 or the second clamping head 1103, a turntable 3201 is fixedly installed on one end of each of the two connecting shafts 1101, extending to the outside of the corresponding concave housing 11. Positioning holes 3202 are provided on both turntables 3201. Mounting brackets 32 are fixedly installed on one outer wall of each of the two concave housings 11. Fastening screws 3203 are threaded onto the side of each mounting bracket 32 ​​away from the concave housing 11. Each of the two linkage bars 3204 is rotatably mounted on the 203. Both linkage bars 3204 pass through the corresponding mounting bracket 32 ​​and are slidably connected to the corresponding mounting bracket 32. Two positioning heads 3205 are fixedly installed on the side of each linkage bar 3204 near the concave housing 11. All four positioning heads 3205 pass through the corresponding positioning holes 3202. A screw head is provided at the end of the fastening screw 3203. A spring washer is provided between the screw head and the mounting bracket 32 ​​to ensure the stable effect of the threaded connection between it and the mounting bracket 32.

[0048] In this embodiment

[0049] Multiple new grinding wheels 19 are pre-stored in the rectangular sleeve 27, and in the initial state, the first clamping rod 30 clamps the bottommost new grinding wheel 19.

[0050] When grinding the shaft, first start the first single-axis cylinder 13 on the connecting vertical plate 12. Its output shaft pushes the third double-sided bracket 1301 to move, so that the center line between the two clamps 1303 is the same as the axis of the steering shaft 10. Then take out the shaft to be ground. At this time, select the first clamping head 1102 or the second clamping head 1103 according to the type of shaft. The first clamping head 1102 clamps the hollow shaft, and the second clamping head 1103 clamps the solid shaft.

[0051] Initially, the two first clamping heads 1102 are in the clamping position. When grinding the hollow shaft, the hollow shaft is placed directly in the arc groove on the lower clamp 1303 and contacts the internal balls. Then, the fourth reduction motor is started in the forward direction, and its output shaft drives the first bidirectional lead screw 1302 to rotate. The two clamps 1303 move closer to each other and finally clamp the hollow shaft. At this time, the axis of the hollow shaft coincides with the axis of the first clamping head 1102. Then, the second reduction motor is started in the forward direction, and its output shaft drives the second transverse lead screw 8 to rotate. The two vertical plates 9 move toward the hollow shaft. When the first clamping head 1102 on it is inserted into the opening on one side of the hollow shaft and fits against the outer edge of the inner ring, it will push the hollow shaft to move horizontally until the first clamping head 1102 on the first vertical plate 6 is inserted into the opening at the other end of the hollow shaft and fits against the outer edge of the inner ring. At this time, the second reduction motor is turned off. The hollow shaft is clamped. Then the fourth reduction motor is started in reverse to separate the clamp 1303 from the hollow shaft and start the output shaft of the first single-shaft cylinder 13 to retract, so that the third double-sided bracket 1301 returns to its original position.

[0052] Subsequently, the third reduction motor is started first, and its output shaft drives the steering shaft 10 to rotate through two meshing gears, thereby driving the hollow shaft to be processed to rotate synchronously, providing rotational power for subsequent grinding. Then, the output shaft of the corresponding dual-axis cylinder is retracted first, causing the corresponding arc-shaped brake pad to separate from the corresponding driven shaft 1804. Then, the first rotary motor near the hollow shaft is started, and its output shaft drives the corresponding drive shaft 1803 to rotate. The drive shaft 1803 is driven by the square clamping block 1805 and the T-bone connector 1901. The moving grinding wheel 19 rotates synchronously at high speed, and the driven shaft 1804 rotates with the grinding wheel 19 to ensure stable rotation of the grinding wheel 19. Then, the set screw of the feed mechanism is loosened, and the feed screw 21 is slowly rotated to drive the feed slider 22 to move the bearing plate 14 and the grinding mechanism slowly towards the hollow shaft, so that the rotating grinding wheel 19 contacts the outer circle of one end of the rotating hollow shaft. At the same time, the outer circle of the hollow shaft can be ground by the grinding action of the grinding wheel 19 until the specified grinding depth is reached. Then, the set screw is tightened again.

[0053] Then, the first reduction motor is started in the forward direction. Its output shaft drives the first transverse lead screw 3 to rotate, and the transverse slider 4 on it moves laterally with the connecting plate 5. The first clearance on the fixed frame can provide room for movement. During the movement, the grinding wheel 19 and the hollow rotating shaft form relative motion. The grinding wheel 19 moves slowly and uniformly from one end of the hollow rotating shaft to the other end. During this process, the grinding wheel 19 can evenly grind the outer circle of the hollow rotating shaft until the grinding wheel 19 moves to the other end of the hollow rotating shaft and then the first reduction motor is turned off. At this time, the outer circle of the hollow rotating shaft has been ground.

[0054] After that, turn off the corresponding first rotary motor, then reverse the feed screw 21 to retract the grinding wheel 19. Immediately afterwards, start the first reduction motor in reverse to bring the connecting plate 5 back to its original position. Then, hold the ground hollow shaft and start the second reduction motor in reverse to release the hollow shaft. The ground hollow shaft can then be removed. Then, install and grind the next hollow shaft to be ground in the same way.

[0055] When grinding a solid rotating shaft, simply select the second clamping head 1103 with a flat head and operate in the same manner as described above.

[0056] In subsequent use, when the grinding wheel 19 being used needs to be replaced due to severe wear, the fifth reduction motor is started in the forward direction first. Its output shaft drives the bearing shaft 16 to rotate. After the two loading boxes 18 have exchanged positions, the fifth reduction motor is turned off. At this time, the new grinding wheel 19 replaces the previous old grinding wheel 19, and then the grinding process on the shaft can continue.

[0057] While the grinding process is underway, on the other side, the first rodless cylinder 23 can be activated first. The slider on it raises the support plate 24, eventually bringing the support plate 24 up to below the old grinding wheel 19. The U-shaped limiting frame 25 is then engaged with the T-bone connectors 1901 on both sides of the old grinding wheel 19. Subsequently, the output shaft of the corresponding dual-axis cylinder is extended, causing the corresponding arc-shaped brake pad to grip the corresponding driven shaft 1804, preventing it from rotating. Then, the sixth reduction motor corresponding to the old grinding wheel 19 is activated in reverse, moving the two corresponding square clamps 1805 from the T-bone connectors 19. Remove the old grinding wheel 19 from the square sink 1902 of 01, then activate the first rodless cylinder 23. Its slider lowers the old grinding wheel 19. The old grinding wheel 19 is then removed from the two U-shaped limiting frames 25. Next, activate the first rodless cylinder 23 again, using its slider to raise the tray 24 to below the corresponding storage box 18. Then, activate the second rodless cylinder 26, whose slider lowers the storage rectangular sleeve 27 until its bottom contacts the top of the U-shaped limiting frame 25. Finally, activate the second single-axis cylinder 29 above. The output shaft extends, inserting the second locking rod 31 into the corresponding T-shaped slide 28, locking the second new grinding wheel 19 from the bottom up inside the storage rectangular sleeve 27. Then, the output shaft of the second single-axis cylinder 29 below retracts, releasing the locking effect on the bottommost new grinding wheel 19 inside the storage rectangular sleeve 27. At this point, the bottommost new grinding wheel 19 will automatically descend, and the T-shaped connecting pieces 1901 on both sides will automatically enter the two U-shaped limiting frames 25. Subsequently, the sixth reduction motor is started in the forward direction, and the two square clamping blocks 1805 move closer together, finally inserting into the corresponding square recess. Within 1902, the first rodless cylinder 23 and the second rodless cylinder 26 are then activated to bring the pallet 24 and the storage rectangular sleeve 27 back to their original positions. After that, when the previous grinding wheel 19 needs to be replaced, the fifth reduction motor is activated in reverse to swap the positions of the two storage boxes 18 again. After the swap, the old grinding wheel 19 can be replaced again in the same way. In subsequent use, the fifth reduction motor can be activated alternately in the forward and reverse directions to make the two storage boxes 18 continuously exchange positions. This reciprocating rotation will not cause entanglement of the external connecting wires.

[0058] Compared with related technologies, the external cylindrical grinding machine for machining shafts provided by the present invention has the following beneficial effects:

[0059] I. This invention pre-stores multiple new grinding wheels 19 within the rectangular storage sleeve 27. When a grinding wheel 19 in use needs to be replaced due to severe wear, the fifth reduction motor is started in the forward direction, driving the bearing shaft 16 to rotate, thereby exchanging the positions of the two loading boxes 18. This allows the new grinding wheel 19 to be put into use quickly. Meanwhile, the old grinding wheel 19 is replaced synchronously through the grinding wheel replacement mechanism, which greatly improves the convenience of replacing grinding wheels. Thus, the old grinding wheel 19 can be replaced quickly without the need for long-term machine downtime for complex grinding wheel replacement operations, significantly improving the efficiency of shaft processing.

[0060] Second, for hollow and solid shafts, this invention provides a switchable first clamping head 1102 and a second clamping head 1103. When machining hollow shafts, the design of the first clamping head 1102 can reliably clamp and position them. When machining solid shafts, the second clamping head 1103 with a flat head can reliably clamp and position them. This switchable clamping head design greatly improves the equipment's versatility for different types of shafts, eliminating the need for multiple dedicated machines for different types of shafts and reducing production costs.

[0061] Third, by setting a first clamping head 1102 and a second clamping head 1103 for clamping and positioning from the side of the shaft, the present invention can ensure that the outer circle of the shaft is not obstructed by any foreign object after it is fixed, and can perform full grinding on the outer circle in one go, which greatly improves the grinding efficiency.

[0062] Second embodiment:

[0063] Based on the external cylindrical grinding machine for machining shafts provided in the first embodiment of this application, the second embodiment of this application proposes another external cylindrical grinding machine for machining shafts. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0064] The second embodiment of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0065] Please refer to the following: Figures 13-17In the second embodiment of the external cylindrical grinding machine for shaft machining provided by the present invention: the first vertical plate 6 is slidably connected to the connecting plate 5. The sliding connection is achieved by opening a dovetail groove on one side of the connecting plate 5, in which a dovetail block is slidably installed. The bottom of the dovetail block is fixedly connected to the first vertical plate 6, thereby forming a reliable sliding effect. A third single-axis cylinder 33 is fixedly installed at the bottom of the connecting plate 5, and its output shaft is fixedly connected to the first vertical plate 6. The same third transverse lead screw 34 is rotatably installed on the side of the two fixed bending frames that are close to each other. A seventh reduction motor is fixedly installed on the fixed bending frame close to the first vertical plate 6, and its output shaft is fixedly connected to one end of the third transverse lead screw 34. Next, a moving block 35 is threaded onto the third transverse lead screw 34. To ensure the stability of the moving block 35 during movement, a crossbar is fixed between the two fixed brackets. This crossbar passes through the moving block 35 and is slidably connected to it. A third rodless cylinder 36 is fixedly installed on the top of the moving block 35. A hollow adapter block 37 is fixedly installed on the slider of the third rodless cylinder 36. The bottom and the side away from the third rodless cylinder 36 of the hollow adapter block 37 are open. A central shaft is rotatably installed inside the hollow adapter block 37. A second rotary motor is fixedly installed on one outer wall of the hollow adapter block 37. Its output shaft is fixedly connected to one end of the central shaft. A central shaft is fixedly mounted on the central shaft. An adapter 38 is fitted, with one side of the adapter 38 extending outside the hollow adapter block 37 and a support strip 39 fixedly installed. A fourth double-sided bracket 40 is fixedly installed on the top of the support strip 39. A fourth single-axis cylinder 41 is fixedly installed on the inner walls of both sides of the fourth double-sided bracket 40. Push-pull plates 42 are fixedly installed on the output shafts of the two fourth single-axis cylinders 41. Clamping plates 43 are fixedly installed on the top of the two push-pull plates 42. An arc-shaped clamping groove is opened on the side of the two clamping plates 43 that is close to each other. The clamping plates 43 are close to the clamping seat 1303. A second clearance opening is opened on the fixed folding frame near the second vertical plate 9. The second clearance opening is adapted to the fourth double-sided bracket 40. In addition, a stop block is fixed on the top of the equipment base 1. This stop block contacts the moving block 35 and serves as a limit, which also facilitates the subsequent return of the clamping plate 43 to its original starting position. Two baffle plates 44 are fixedly installed on the side of the equipment base 1 near the second vertical plate 9. A belt conveyor unit 45 is installed inside the two baffle plates 44. The belt conveyor unit 45 is a common conveying device on the market. It has two conveyor rollers and the same belt is installed on the two conveyor rollers. Both conveyor rollers are rotatably mounted on the two baffle plates 44. A belt motor is fixed on the outside of one of the baffle plates 44. Its output shaft is connected to the corresponding conveyor roller, thereby achieving the conveying effect.

[0066] In this embodiment

[0067] The belt conveyor unit 45 is connected to the next processing step;

[0068] After the grinding operation on the shaft is completed, to facilitate the transfer of the shaft to the next process, the third rodless cylinder 36 is first activated, and its slider, carrying the support bar 39, rises until the shaft is positioned between the two clamping plates 43. Then, the output shafts of the two fourth single-axis cylinders 41 are extended, clamping the shaft with the two clamping plates 43. Next, the output shaft of the third single-axis cylinder 33 extends, separating the first clamping head 1102 or the second clamping head 1103 on the first vertical plate 6 from the shaft. Then, the second reduction motor is activated, separating the first clamping head 1102 or the second clamping head 1103 on the second vertical plate 9 from the shaft. Then, the third rodless cylinder 36 is activated, and its slider descends with the shaft. Afterward, the installation and grinding of the next shaft can continue. Simultaneously, the seventh reduction motor is activated in the forward direction. The machine's output shaft drives the third transverse lead screw 34 to rotate, and the third rodless cylinder 36 moves the rotating shaft horizontally, eventually causing the rotating shaft to pass through the second clearance opening and move above the belt conveyor unit 45. Then, the second rotary motor is started in the forward direction, and its output shaft drives the central shaft to rotate, thereby rotating the support bar 39. Finally, the clamp 43 and the rotating shaft are tilted. Then, the output shaft of the fourth single-axis cylinder 41 is controlled to retract slightly to initially relieve the bearing force on the rotating shaft. At this time, the rotating shaft naturally slides down and contacts the belt conveyor unit 45. Then, the rotating shaft is gradually brought out from the two speed-up cylinders 43 and finally conveyed out. Then, the second rotary motor is reversed to bring the clamp 43 back to its original state. Then, the seventh reduction motor is started in the reverse direction to bring the moving block 35 back to its original position and wait for the next ground rotating shaft.

[0069] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An external cylindrical grinder for machining a rotary shaft, comprising a device base, characterized by, The upper portion of the equipment base is provided with a first double-side support, a first transverse lead screw is rotatably installed in the first double-side support, a transverse sliding block is threadedly installed on the first transverse lead screw, a connecting plate is fixedly installed at the bottom of the transverse sliding block, a first vertical plate is arranged below the connecting plate, a second double-side support is fixedly installed at the bottom of the connecting plate, a second transverse lead screw is rotatably installed in the second double-side support, a second vertical plate is threadedly installed on the second transverse lead screw, a steering shaft is rotatably installed on the first vertical plate and the second vertical plate, and a clamping mechanism is arranged at the end of the steering shafts close to each other; The equipment base is provided with a pre-clamping mechanism for clamping a shaft to be machined, a bearing flap is arranged above the equipment base, a grinding mechanism and a grinding wheel replacing mechanism are arranged on the bearing flap, the grinding mechanism is used for grinding the shaft, the grinding wheel replacing mechanism is used for replacing an old grinding wheel, a feeding mechanism is arranged on the equipment base and connected with the bearing flap; Each clamping mechanism comprises a concave shell fixedly installed at one end of the steering shaft, a connecting shaft rotatably installed in the concave shell, a first clamping head and a second clamping head fixedly installed on the connecting shaft, the first clamping head and the second clamping head are symmetrically distributed, and the first clamping head and the second clamping head are designed in a conical shape, the conical end of the first clamping head is designed in a round head, and the conical end of the second clamping head is designed in a flat shape. The grinding mechanism comprises a convex joint table, which is fixedly installed on one side of the bearing folding plate, a bearing shaft is rotatably installed on the convex joint table, a fifth speed reducer is fixedly installed on one side of the convex joint table, the output shaft of the fifth speed reducer is fixedly connected with one end of the bearing shaft, two symmetrically arranged connecting blocks are fixedly installed on the bearing shaft, a sample box is fixedly installed on the side away from each other of the two connecting blocks, a second bidirectional screw is rotatably installed in the two sample boxes, two moving strips are threadedly installed on the two second bidirectional screws, the side away from each other of the four moving strips is extended to the outside of the corresponding sample box and is in sliding connection with the corresponding sample box, a driving shaft is rotatably installed on the two moving strips away from the convex joint table, a driven shaft is rotatably installed on the two moving strips close to the convex joint table, a double-shaft air cylinder is fixedly installed on the two moving strips close to the convex joint table, an arc-shaped brake pad is fixedly installed on the output shaft of the two double-shaft air cylinders, the inner walls of the two arc-shaped brake pads are respectively in abutment with the two driven shafts, the brake anti-rotation effect is formed, square clamping blocks are fixedly installed on the ends of the two driving shafts and the two driven shafts close to each other, a grinding wheel is arranged between the corresponding driving shaft and driven shaft, T-bone connecting pieces are fixedly installed on the two sides of the two grinding wheels, square recesses are formed on the sides away from each other of the two T-bone connecting pieces, the four square clamping blocks are respectively inserted into the four square recesses, sixth speed reducers are fixedly installed on the outer walls of the sides of the two sample boxes away from the convex joint table, the output shafts of the two sixth speed reducers are respectively fixedly connected with one end of the two second bidirectional screws, first rotary motors are fixedly installed on the two moving strips away from the convex joint table, the output shafts of the two first rotary motors are respectively fixedly connected with one end of the two driving shafts, and the grinding mechanism is located on one side of the clamping mechanism on the first vertical plate. The grinding wheel replacing mechanism comprises a first rodless cylinder, a mounting strip fixedly installed on a sliding block of the first rodless cylinder, a bearing folded plate, a mounting strip, a supporting plate, two U-shaped limiting frames, a storage rectangular sleeve, two T-shaped slides, two second single-shaft cylinders, a first clamping rod, a second clamping rod, two shuttling holes and a T-shaped connecting piece.

2. The centerless grinder for machining a rotary shaft according to claim 1, characterized by The top of the first vertical plate is fixedly connected with the connecting plate.

3. The centerless grinder for machining a rotary shaft according to Claim 1, wherein The top of the device base is fixedly installed with two fixed folding frames, the top of the first double-side support is fixedly connected with the two fixed folding frames, a first speed reducer motor is fixedly installed on one side of the first double-side support, an output shaft of the first speed reducer motor is fixedly connected with one end of the first horizontal lead screw, a second speed reducer motor is fixedly installed on one side of the second double-side support, an output shaft of the second speed reducer motor is fixedly connected with one end of the second horizontal lead screw, the top of the horizontal sliding block is in contact with the top inner wall of the first double-side support, the top of the second vertical plate is in contact with the top inner wall of the second double-side support, a first avoiding opening is arranged on the fixed folding frame close to the first vertical plate, the first vertical plate is matched with the first avoiding opening, a third speed reducer motor is fixedly installed on the first vertical plate, a gear is fixedly sleeved on an output shaft of the third speed reducer motor and a corresponding steering shaft, and the two gears are meshed.

4. The centerless grinder for machining a rotary shaft according to Claim 1, wherein The pre-clamping mechanism includes a connecting vertical plate fixedly installed on the top of the equipment base, one side of the connecting vertical plate is fixedly installed with a first single-shaft air cylinder, the output shaft of the first single-shaft air cylinder penetrates through the connecting vertical plate and is in sliding connection with the connecting vertical plate, a third double-side support is fixedly installed on the output shaft of the first single-shaft air cylinder, a first bidirectional lead screw is rotatably installed in the third double-side support, two clamping seats are threadedly installed on the first bidirectional lead screw, the side of the two clamping seats close to each other is designed as an arc groove, a plurality of balls are inlaid in the arc groove, a fourth speed reducer is fixedly installed on the top of the third double-side support, the output shaft of the fourth speed reducer is fixedly connected with the top end of the first bidirectional lead screw, and the clamping seat is closer to the clamping mechanism on the first vertical plate.

5. The centerless grinder for machining a rotation shaft according to Claim 1, wherein The feeding mechanism includes two link plates, both of which are fixedly installed on the top of the equipment base, a same feeding screw is rotatably installed on both of the link plates, a feeding block is threadedly installed on the feeding screw, the top of the feeding block is fixedly connected with the bearing flap, an anti-skid knob is fixedly installed on one end of the feeding screw, a support plate is fixedly installed on the link plate close to the anti-skid knob, a jackscrew is threadedly installed on the support plate, and the end of the jackscrew abuts against the feeding screw.

6. The centerless grinder for machining a rotary shaft according to Claim 1, wherein One end of each of the two connecting shafts extends out of the corresponding concave shell and is fixedly installed with a rotating disc, a positioning hole is formed in each of the two rotating discs, a mounting rack is fixedly installed on the outer wall of one side of each of the two concave shells, a fastening screw is threadedly installed on the side of each of the two mounting racks away from the concave shell, a linkage strip is rotatably installed on each of the two fastening screws, each of the two linkage strips penetrates through and is in sliding connection with the corresponding mounting rack, two positioning heads are fixedly installed on the side of each of the two linkage strips close to the concave shell, and each of the four positioning heads penetrates through the corresponding positioning hole.

7. The centerless grinder for machining a rotary shaft according to Claim 3, wherein The first vertical plate is in sliding connection with the connecting plate, the bottom of the connecting plate is fixedly installed with a third single-shaft air cylinder, the output shaft of the third single-shaft air cylinder is in fixed connection with the first vertical plate, the side, close to each other, of two fixed folding frames is rotationally installed with a same third transverse lead screw, the fixed folding frame close to the first vertical plate is fixedly installed with a seventh speed reduction motor, the output shaft of the seventh speed reduction motor is in fixed connection with one end of the third transverse lead screw, the moving block is in screw connection on the third transverse lead screw, the top of the moving block is fixedly installed with a third rodless air cylinder, the sliding block of the third rodless air cylinder is fixedly installed with a hollow adapter block, the bottom and the side, away from the third rodless air cylinder, of the hollow adapter block are designed as openings, the hollow adapter block is rotationally installed with a central shaft, the side outer wall of the hollow adapter block is fixedly installed with a second rotary motor, the output shaft of the second rotary motor is in fixed connection with one end of the central shaft, the central shaft is fixedly sleeved with an adapter head, the side of the adapter head extends to the outside of the hollow adapter block and is fixedly installed with a support strip, the top of the support strip is fixedly installed with a fourth double-side support, the inner walls on the two sides of the fourth double-side support are fixedly installed with fourth single-shaft air cylinders, the output shafts of the two fourth single-shaft air cylinders are fixedly installed with push-pull sheets, the top of the two push-pull sheets is fixedly installed with clamping sheets, the side, close to each other, of the two clamping sheets is formed with arc-shaped clamping grooves, the clamping sheet is closer to the clamping seat, the fixed folding frame close to the second vertical plate is formed with a second avoiding opening, the second avoiding opening is matched with the fourth double-side support, the side, close to the second vertical plate, of the equipment base is fixedly installed with two baffle sheets, and the two baffle sheets are internally provided with a belt conveyor set.

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